CN103624572A - Fixture locating device - Google Patents

Abstract

A fixture positioning device, comprising a positioning pin, a hollow guide sleeve, and a spring, the positioning pin includes a pin rod and a pin head, the pin rod and the pin head are coaxially connected, a step is provided between the pin rod and the pin head, and the pin rod There is a protruding shaft on the top, a sleeve hole is provided in the guide sleeve, a part of the pin head and the pin rod is accommodated in the sleeve hole, the other part of the pin rod and the protruding shaft are located outside the sleeve hole, the spring is accommodated in the sleeve hole, and the spring sleeve On the pin rod and clamped between the step part and one end of the guide sleeve; when the positioning pin is in the latch positioning state, the positioning pin is driven by the spring so that the pin head protrudes out of the sleeve hole, and the protruding shaft is engaged with the guide sleeve When the positioning pin is in the state of pulling out the pin and releasing it, the pin head retracts into the sleeve hole, the spring is in a compressed state, and the protruding shaft is engaged with the second position of the guide sleeve. The fixture positioning device described above can solve the problem of difficult positioning of the positioning pin, avoid collision between the positioning pin and parts, and realize fast and accurate positioning of the positioning pin and release of the pin.

Description

Fixture positioning device

technical field

The invention relates to the technical field of auto parts processing, in particular to a clamp positioning device capable of positioning the auto parts to be processed.

Background technique

The fixture is a device used to fix the processing object in the process of mechanical manufacturing, and to fix the processing object in the correct position for processing or testing. Fixture positioning for auto parts processing usually adopts a fixture positioning method with two pins on one side. The special fixture for auto parts usually uses positioning pins to fix. At present, most of the positioning pins used are fixed positioning pins. The operation method is to operate After the personnel observe and determine, the fixed positioning pin is inserted into the positioning pin hole of the component for positioning.

However, there are some unavoidable problems in the practical application of the fixed positioning pins: firstly, due to the inclination or deviation of the placement position of the parts, it is difficult to locate the fixed positioning pins, and the quality and efficiency of the clamping and fixing of the parts are also affected. It is bound to be affected; secondly, in the process of inserting the positioning pin, due to the inaccurate positioning of the pin, the positioning pin is very easy to collide with the parts, which not only easily scratches the processing surface of the parts, but also the fixed positioning pins collide with the parts many times After a short period of use, it will break and cannot be used. Frequent replacement of new fixed positioning pins will inevitably increase production costs and reduce the work efficiency of parts processing.

Contents of the invention

In view of the above situation, it is necessary to provide a clamp positioning device for fast and accurate pin positioning.

A fixture positioning device, comprising a positioning pin, a hollow guide sleeve, and a spring, the positioning pin includes a pin rod and a pin head, the pin rod is coaxially connected to the pin head, and the pin rod is connected to the pin head A step is provided between the heads, a protruding shaft is provided on the pin rod, a sleeve hole is provided in the guide sleeve, a part of the pin head and the pin rod is accommodated in the sleeve hole, and the pin The other part of the rod and the protruding shaft are located outside the sleeve hole, the spring is accommodated in the sleeve hole, the spring is sleeved on the pin rod and sandwiched between the step part and the guide between one end of the sleeve; when the positioning pin is in the latch positioning state, the positioning pin is driven by the spring to make the pin head protrude out of the sleeve hole, and the protruding shaft is engaged with the In the first position of the guide sleeve; when the positioning pin is in the state of pulling the pin out, the pin head is retracted into the sleeve hole, the spring is in a compressed state, and the protruding shaft is engaged with the The second position of the guide sleeve.

Further, the guide sleeve includes a hollow sleeve and a slot seat connected to one end of the sleeve, the sleeve hole is set in the sleeve, and the positioning pin is in the position of the plug or the pin is pulled out. In the loose state, the protruding shaft is engaged with different positions of the slot seat.

Further, the slot seat is provided with a deep slot and a shallow slot staggered with the deep slot, and the deep slot engages with the protruding shaft to realize the pin positioning of the positioning pin, After the shallow clamping groove engages with the protruding shaft, the pin-out of the positioning pin is released.

Further, the clamp positioning device further includes a handle, and the handle is connected to the end of the pin rod away from the pin head.

Further, the guide sleeve also includes a flange portion, the flange portion is perpendicular to the axis of the sleeve and protrudes on the outer circumference of the sleeve, and the fixture positioning device also includes a positioning plate, the positioning A through hole is provided in the plate, the flange portion is connected to the positioning plate, and the end of the sleeve away from the handle is accommodated in the through hole of the positioning plate.

Further, the outer diameter of the stepped portion is larger than the diameter of the spring, one end of the spring abuts against the stepped portion, and the other end of the spring abuts against the end of the sleeve close to the handle.

Further, the end of the sleeve close to the handle is provided with a through hole, the aperture of the sleeve hole is larger than the aperture of the through hole, and the aperture of the through hole allows the pin rod to pass through freely without allowing the The above steps pass through.

Further, the protruding shaft is perpendicular to the axial direction of the pin rod and protrudes from the outer circumference of the pin rod.

Further, the protruding shaft is a detachable pin shaft fixed on the pin rod, and a fixing hole perpendicular to the axial direction of the pin rod is opened on the pin rod, and the pin shaft passes through the In the fixing hole, and both ends of the pin shaft protrude from the outer circumference of the pin rod.

A fixture positioning system, including parts to be processed, the parts are provided with positioning pin holes, the fixture positioning system also includes the fixture positioning device; when the positioning pin is in the latch positioning state, the The pin head is inserted into the locating pin hole; when the locating pin is in a pin-out release state, the pin head is disengaged from the locating pin hole.

The beneficial effect brought by the technical solution of the embodiment of the present invention is: the above-mentioned clamp positioning device includes a positioning pin, a guide sleeve, and a slot seat and a protruding shaft engaged with each other. The structure of the clamp positioning device is simple, easy to operate, and can solve the positioning The problem of difficult pin positioning can avoid the collision between the positioning pin and the parts, and improve the service life of the positioning pin. The fixture positioning device can realize the fast and accurate positioning of the positioning pin and the release of the pin, which can effectively improve the processing efficiency of parts and reduce production costs. .

Description of drawings

Fig. 1 is a schematic cross-sectional structural view of a clamp positioning device of the present invention in a locked state;

Fig. 2 is a schematic cross-sectional structural view of the clamp positioning device of the present invention in an unlocked state;

Fig. 3 is a schematic sectional view of II-II in Fig. 2;

Fig. 4 is an exploded schematic view of the main components of the fixture positioning device of the present invention.

Detailed ways

In order to make the purpose, technical solution and advantages of the present invention clearer, the embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings.

Referring to FIGS. 1 to 4 , the clamp positioning device 100 according to the embodiment of the present invention includes a positioning pin 10 , a guide sleeve 20 , a handle 30 , a spring 40 , a positioning plate 50 , a pin shaft 60 and a bolt 70 .

The positioning pin 10 includes a pin rod 12 , a pin head 14 , a stepped portion 16 and a protruding shaft 18 . Both the pin rod 12 and the pin head 14 are cylindrical shafts. The pin rod 12 and the pin head 14 are fixedly connected in the axial direction of the positioning pin 10 . The fixed connection can be welding or riveting. It can also be understood that the pin head 14 and the pin rod 12 can be integrally formed. A stepped portion 16 perpendicular to the axial direction of the positioning pin 10 is disposed between the pin head 14 and the pin rod 12 . The stepped portion 16 is an annular step whose outer diameter is larger than that of the spring 40 . The stepped portion 16 can be formed by the diameter of the pin head 14 being larger than that of the pin shaft 12, or it can be formed separately. In this embodiment, the stepped portion 16 is the former. The pin head 14 is limited in the guide sleeve 20 and does not break away from the guide sleeve 20 , while the pin rod 12 protrudes from the guide sleeve 20 . The protruding shaft 18 can be a detachable structure. The protruding shaft 18 is perpendicular to the axial direction of the pin rod 12 and protrudes on the pin rod 12. In this embodiment, the protruding shaft 18 is a detachable structure fixed on the pin rod 12. The pin shaft, the pin rod 12 is provided with a fixing hole (not marked) perpendicular to the axial direction of the pin rod 12, the pin shaft is set in the fixing hole, and the two ends of the pin shaft all protrude from the pin rod 12. The outer circumference, of course, the protruding shaft 18 can also be a structure made integral with the pin rod 12 . The protruding shaft 18 can be engaged with the slot seat 26 of the guide sleeve 20 , and through the slots 264 of different depths engaged in the slot seat 26 , the positioning of the pin or the release of the pin can be realized. The end of the pin rod 12 is a handle connecting end 122 , and the handle connecting end 122 is fixedly connected with the handle 30 . The handle connection end 122 is provided with a pin hole 124 , and the pin hole 124 is used for the fixed connection between the pin rod 12 and the handle 30 . The end of the pin head 14 is a free end 142, and the free end 142 is cut with a circular inner inverted foot or cut into a semi-ellipsoid, hemispherical shape, the free end 142 is the positioning contact of the fixture positioning device 100, and the free end 142 needs It is inserted into the positioning pin hole 210 of the component 200 to be processed for positioning, and the surface of the free end 142 is arc-shaped to help reduce friction and collision damage between the free end 142 and the positioning pin hole 210 . The positioning pin 10 can be made of stainless steel, other high-strength metals or metal alloys.

The guide sleeve 20 includes a sleeve 22 , a flange portion 24 and a slot seat 26 .

The sleeve 22 is a hollow cylinder structure, and a sleeve hole 25 is formed in the sleeve 22. The aperture of the sleeve hole 25 is slightly larger than the outer diameter of the pin head 14 and the stepped portion 16, and the pin head 14 and the stepped portion 16 can be accommodated in the sleeve hole 25. Freely move in the sleeve hole 25, the sleeve 22 is provided with a through hole 28 at the center of one end close to the handle 30, the aperture of the sleeve hole 25 is larger than the aperture of the through hole 28, the aperture of the through hole 28 can allow the positioning pin 10 pin The rod 12 passes freely without allowing the stepped portion 16 to pass through, and the through hole 28 plays a limiting role on the stepped portion 16 and the pin head 14 .

The flange portion 24 is perpendicular to the axis of the sleeve 22 and protrudes from the outer periphery of the middle portion of the sleeve 22 . In this embodiment, the flange portion 24 and the sleeve 22 are integrally processed, but it is not limited thereto. The flange part 24 is provided with fixing holes 242, and the fixing holes 242 are provided with an internal thread structure. The fixing holes 242 are evenly distributed on the flange part 24 with the center of the sleeve 22 as the center of the circle. In this embodiment, the fixing holes 242 are 3.

The slot seat 26 is arranged on the outer side of the end of the sleeve 22 close to the handle 30, and the slot seat 26 is coaxially fixedly connected with the sleeve 22, and the fixed connection may be welding, riveting or threading. In this embodiment, the slot seat 26 and the sleeve 22 are integrally processed, but it is not limited thereto. An axial through hole 262 is formed in the middle of the card slot seat 26 , and the diameter of the through hole 262 is slightly larger than the diameter of the pin rod 12 but smaller than the length of the protruding shaft 18 . One end of the slot seat 26 facing the handle 30 is provided with a slot 264, the slot 264 can be engaged with the protruding shaft 18 of the positioning pin 10, the width of the slot 264 can allow the protruding shaft 18 to move freely therein, the slot 264 There are two slots staggered from each other on the slot seat 26. The depths of the two slots 264 are different. Specifically, the slots 264 include a deep slot 266 and a shallow slot 268. The deep slot 266 is engaged with the protruding shaft 18. After closing, the latch positioning of the positioning pin 10 is realized. After the shallow clamping groove 268 is engaged with the protruding shaft 18, the pulling pin of the positioning pin 10 is released. of. In this embodiment, the deep slots 266 and the shallow slots 268 are staggered by 90°, that is, they are arranged in a cross shape.

The handle 30 includes a handle portion 32 and a receiving portion 34 . The handle part 32 is disc-shaped, and one side of the handle part 32 is fixedly connected to the receiving part 34. The outer wall of the handle part 32 is provided with a textured structure. It can be understood that the textured structure can also be other anti-slip structures. The housing part 34 is a hollow cylinder, the outer diameter of the housing part 34 is smaller than the outer diameter of the handle part 32, the hollow inner diameter of the housing part 34 is slightly larger than the diameter of the pin rod 12, and the hollow part of the housing part 34 can just accommodate the handle of the pin rod 12 The connection terminal 122 is inserted thereinto. The receiving portion 34 is also provided with a pin hole 36 , the pin hole 36 is the same size as the pin hole 124 of the pin rod 12 , and their positions correspond to each other. When the handle connection end 122 of the pin rod 12 is inserted into the receiving portion 34, the adjustment pin hole 36 and the pin hole 124 can overlap each other, and the pin shaft 60 is inserted, and the pin rod 12 is fixedly connected with the receiving portion 34, that is, the positioning pin 10 and the handle 30 fixed in one.

The pin rod 12 of the positioning pin 10 is inserted into the sleeve 22 from the left end of the guide sleeve 20 and passes out from the right end of the sleeve 22. The spring 40 is sleeved on the pin rod 12 of the positioning pin 10 and accommodated in the sleeve hole 25 of the guide sleeve 20 Inside, the diameter of the spring 40 is smaller than the outer diameter of the stepped portion 16 but larger than the diameter of the pin rod 12 . One end of the spring 40 abuts against the step portion 16, and the other end of the spring 40 abuts against the end of the sleeve 22 which is close to the handle 30, while the spring 40 remains coaxial with the positioning pin 10, and the spring 40 is located in the hollow guide sleeve 20 It is inside and can expand and contract along the axial direction of the guide sleeve 20 . The step portion 16 and the end of the sleeve 22 facing the handle 30 make the spring 40 confined in the guide sleeve 20 . Through the elastic force of the spring 40 and the engaging and limiting effect of the two clamping grooves 264, the positioning of the pin between the positioning pin 10 and the component 200 to be processed or the release of the pin can be realized; specifically, the handle 30 is first operated to make the positioning The protruding shaft 18 of the pin 10 is aligned with the deep groove 266, and then the handle 30 is released. At this time, under the compression force of the spring 40, the pin head 14 of the positioning pin 10 is driven to move towards the component 200, and the positioning pin 10 The pin head 14 protrudes from the sleeve 22 of the guide sleeve 20 and is inserted into the positioning pin hole 210 of the part 200 to be processed to realize the pin positioning, and the protruding shaft 18 is stuck in the deep slot 266, so that the fixture positioning device 100 is in As shown in the locked state of Figure 1, the spring 40 is still in a certain compressed state at this time to provide a certain preload to prevent the pin head 14 of the positioning pin 10 from coming out of the positioning pin hole 210 of the component 200; The direction of the component 200 (to the right in the figure) exerts a force on the operating handle 30 to overcome the elastic force of the spring 40 and move the positioning pin 10 toward the direction away from the component 200 to be processed (to the right in the figure) At this time, the pin head 14 of the positioning pin 10 is disengaged from the positioning pin hole 210 of the component 200 and retracted into the sleeve 22 of the guide sleeve 20 to realize the release of the pin. By rotating the handle 30, the protruding shaft of the positioning pin 10 18 is aligned with the shallow slot 268, and then the handle 30 is released. At this time, the protruding shaft 18 is stuck in the shallow slot 268, so that the clamp positioning device 100 is in an unlocked state as shown in FIG. 2, and the spring 40 is in a compressed state at this time.

The positioning plate 50 is a rectangular or L-shaped plate. The thickness of the positioning plate 50 is equal to or slightly greater than the distance between the left end of the sleeve 22 and the left end of the flange 24 . The positioning plate 50 is provided with a through hole 52 , the through hole 52 can receive the left end of the guide sleeve 20 therein and ensure that the guide sleeve 20 does not contact with the component 200 . The positioning plate 50 is also provided with fixing holes 54, the fixing holes 54 are arranged on one end surface of the positioning plate 50 (the fixing holes 54 are arranged on the right end surface of the positioning plate 50 in this embodiment) and the positioning plates are evenly distributed with the center of the through hole 52 as the center of the circle 50, in this embodiment, the number of fixing holes 54 is the same as the number of fixing holes 242 of the guide sleeve 20, which is also three, and the apertures of the fixing holes 54 and the fixing holes 242 are the same in size, and their positions correspond to each other. The fixing hole 54 is provided with an internal thread structure, and the internal thread structure of the fixing hole 54 is the same as that of the fixing hole 242 . Adjust the fixed hole 242 and the fixed hole 54 so that the axis coincides, screw the bolt 70 into the fixed hole 242 and the fixed hole 54 successively, and the fixed hole 242 and the fixed hole 54 are fastened on the bolt 70, that is, the bolt 70 connects the guide sleeve 20 and the fixed hole 54. The positioning plate 50 is fixed in one body. Due to the structure of the positioning plate 50, when the clamp positioning device 100 is in the unlocked state, the pin head 14 of the positioning pin 10 retracts to be positioned in the through hole 52 and the sleeve hole 25, and the positioning plate 50 and the positioning pin hole of the component 200 to be processed After the outer surface of 210 is aligned, it can be bonded and contacted, which can avoid the inclination or deviation of the placement position of parts 210, and will not cause the problem of difficult positioning of the positioning pin 10. The structure of the positioning plate 50 is not limited thereto, and the positioning plate 50 may also be other structures capable of being in contact with the components 200 .

Pin shaft 60 can be cylindrical pin shaft, conical pin shaft or bolt, and the diameter of pin shaft 60 just can pass through pin hole 36 and pin hole 124 freely, and pin shaft 60 is fixedly connected with pin hole 36 and pin hole 124, and pin shaft 60 The positioning pin 10 and the handle 30 are fixed together.

The external thread structure of the bolt 70 is compatible with the internal thread structure of the fixing hole 242 and the fixing hole 54. The quantity of the bolt 70 is the same as that of the fixing hole 242 and the fixing hole 54. The fixing hole 54 is fixed together, that is, the bolt 70 fixes the guide sleeve 20 and the positioning plate 50 together. The length of the bolt 70 is less than or equal to the sum of the thicknesses of the fixing hole 242 and the fixing hole 54 .

The beneficial effect brought by the technical solution of the embodiment of the present invention is: the above-mentioned fixture positioning device 100 includes the positioning pin 10, the guide sleeve 20, the engaging groove seat 26 and the protruding shaft 18, the structure of the fixture positioning device 100 is simple, Easy to operate, can solve the problem of difficult positioning of the positioning pin 10, avoid the collision between the positioning pin 10 and the parts 200, improve the service life of the positioning pin 10, and the fixture positioning device 100 can realize fast and accurate positioning of the positioning pin 10 and release of the pin. Open, effectively improve the processing efficiency of parts 200, and reduce production costs.

It should be noted that, in this document, the terms "comprising", "comprising" or any other variation thereof are intended to cover a non-exclusive inclusion such that a process, method, article or apparatus comprising a set of elements includes not only those elements, It also includes other elements not expressly listed, or elements inherent in the process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of additional identical elements in the process, method, article or apparatus comprising said element.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection of the present invention. within range.

Claims (10)

1. A clamp positioning device (100), characterized in that it includes a positioning pin (10), a hollow guide sleeve (20), and a spring (40), and the positioning pin (10) includes a pin rod (12) and A pin head (14), the pin rod (12) is coaxially connected to the pin head (14), and a step portion (16) is provided between the pin rod (12) and the pin head (14), The pin rod (12) is provided with a protruding shaft (18), the guide sleeve (20) is provided with a sleeve hole (25), and the pin head (14) and a part of the pin rod (12) are accommodated In the sleeve hole (25), the other part of the pin rod (12) and the protruding shaft (18) are located outside the sleeve hole (25), and the spring (40) is accommodated in the sleeve hole (25), the spring (40) is sheathed on the pin rod (12) and sandwiched between the step portion (16) and one end of the guide sleeve (20); the positioning pin (10) When it is in the pin positioning state, the positioning pin (10) is driven by the spring (40) so that the pin head (14) protrudes out of the sleeve hole (25), and the protruding shaft (18) is engaged in the first position of the guide sleeve (20); when the positioning pin (10) is in the state of pulling out the pin and releasing the pin, the pin head (14) retracts to the sleeve hole (25 ), the spring (40) is in a compressed state, and the protruding shaft (18) is engaged in the second position of the guide sleeve (20). 2. The fixture positioning device (100) according to claim 1, characterized in that: the guide sleeve (20) comprises a hollow sleeve (22) and a slot connected with one end of the sleeve (22) seat (26), the sleeve hole (25) is set in the sleeve (22), and the protruding shaft (18) Engaged in different positions of the card slot seat (26). 3. The jig positioning device (100) according to claim 2, characterized in that: the slot seat (26) is provided with a deep slot (266) and a staggered set with the deep slot (266) The shallow card slot (268), the deep card slot (266) is engaged with the protruding shaft (18) to realize the pin positioning of the positioning pin (10), the shallow card slot (268) and the protruding shaft After the shaft (18) is engaged, the release of the positioning pin (10) is realized. 4. The clamp positioning device (100) according to any one of claims 1 to 3, characterized in that: the clamp positioning device (100) further comprises a handle (30), and the handle (30) is connected to the Pin rod (12) is away from an end of pin head (14). 5. The fixture positioning device (100) according to claim 4, characterized in that: the guide sleeve (20) further comprises a flange portion (24), and the flange portion (24) is perpendicular to the sleeve (22) axis and protrudingly arranged on the outer circumference of the sleeve (22), the clamp positioning device (100) also includes a positioning plate (50), and a through hole (52) is provided in the positioning plate (50) , the flange part (24) is connected to the positioning plate (50), and the end of the sleeve (22) away from the handle (30) is accommodated in the through hole (52) of the positioning plate (50) Inside. 6. The clamp positioning device (100) according to claim 4, characterized in that: the outer diameter of the stepped portion (16) is larger than the diameter of the spring (40), and one end of the spring (40) abuts against the On the step portion (16), the other end of the spring (40) abuts against the end of the sleeve (22) close to the handle (30). 7. The clamp positioning device (100) according to claim 6, characterized in that: the end of the sleeve (22) close to the handle (30) is provided with a through hole (28), and the sleeve hole (25 ) is larger than the aperture of the through hole (28), and the aperture of the through hole (28) allows the pin rod (12) to pass through freely but does not allow the step portion (16) to pass through. 8. The fixture positioning device (100) according to claim 4, characterized in that: the protruding shaft (18) is perpendicular to the axial direction of the pin rod (12) and protrudes from the pin rod (12) the periphery. 9. The clamp positioning device (100) according to claim 8, characterized in that: the protruding shaft (18) is a detachable pin fixed on the pin rod (12), and the pin rod ( 12) There is a fixed hole perpendicular to the axial direction of the pin rod (12), the pin shaft is passed through the fixed hole, and both ends of the pin shaft protrude from the pin rod (12) 12) Perimeter. 10. A clamp positioning system, comprising a component (200) to be processed, and positioning pin holes (210) are provided on the component (200), characterized in that: the clamp positioning system also includes the The clamp positioning device (100) described in any one of 9; when the positioning pin (10) is in the latch positioning state, the pin head (14) is inserted into the positioning pin hole (210); the positioning When the pin (10) is in the pin-out release state, the pin head (14) is disengaged from the positioning pin hole (210).

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