CN216577498U

CN216577498U - Floating positioning fixture capable of correcting deviation

Info

Publication number: CN216577498U
Application number: CN202123240785.4U
Authority: CN
Inventors: 江东焕
Original assignee: Dongguan Ruiheng Precision Machinery Co ltd
Current assignee: Dongguan Ruiheng Precision Machinery Co ltd
Priority date: 2021-12-21
Filing date: 2021-12-21
Publication date: 2022-05-24
Anticipated expiration: 2031-12-21

Abstract

The utility model discloses a deviation-rectifying floating positioning clamp which comprises a pin seat and a positioning pin arranged on the pin seat, wherein the end part of the positioning pin protrudes out of the surface of the pin seat; the shell is obliquely arranged relative to the left and right directions of the pin seat, and the front end of the pin needle obliquely and upwards extends out of the surface of the pin seat; the pin seat is arranged on the sliding seat, the sliding seat is arranged on the base in a front-back sliding mode, the balance block fixed at the lower end of the sliding seat is arranged in the movable groove of the base, the front inner wall and the rear inner wall of the movable groove are respectively provided with a second spring and a third spring, and the end parts of the second spring and the third spring are respectively contacted with the front end surface and the rear end surface of the balance block. The pin of the positioning pin can realize the floating in the left-right direction or the front-back direction and realize the deviation rectifying function.

Description

Floating positioning fixture capable of correcting deviation

The technical field is as follows:

the utility model relates to the technical field of clamp products, in particular to a floating positioning clamp capable of correcting deviation.

Background art:

the jig is a device for fixing a processing object to occupy a correct position for receiving construction or inspection in a machine manufacturing process.

The positioning pin is used very generally in the anchor clamps production line as participating in the part of restriction degree of freedom, including welding jig, punching press anchor clamps, the anchor clamps of moulding plastics, detection anchor clamps etc. current positioning jig structure is generally including key seat and fixed mounting in the locating pin on the key seat, and this locating pin upper end protrusion outside the key seat to the locating hole that is used for imbedding the work piece, with this realization location work piece. Because the positioning pin is fixedly arranged on the pin seat, if the position of the workpiece is slightly wrong or the positioning hole of the workpiece is slightly deviated in processing, the positioning pin cannot be embedded into the positioning hole of the workpiece, the position of the workpiece is required to be adjusted manually and continuously, the labor intensity is high, the efficiency is low, and the improvement of the productivity is not facilitated.

In view of the above, the present inventors propose the following.

The utility model has the following contents:

the utility model aims to overcome the defects of the prior art and provides a deviation-rectifying floating positioning clamp.

In order to solve the technical problems, the utility model adopts the following technical scheme: the floating positioning clamp capable of correcting the deviation comprises a pin boss and a positioning pin arranged on the pin boss, wherein the end part of the positioning pin protrudes out of the surface of the pin boss, the positioning pin comprises a shell, a pin penetrating through the shell and a first spring arranged between the rear end of the pin and the shell, and the front end of the pin extends out of the front end surface of the shell under the elastic force action of the first spring; the shell is obliquely arranged relative to the left and right directions of the pin seat, and the front end of the pin needle obliquely and upwards extends out of the surface of the pin seat; the pin seat is arranged on the sliding seat, the sliding seat is arranged on the base in a front-back sliding mode, the balance block fixed at the lower end of the sliding seat is arranged in the movable groove of the base, the front inner wall and the rear inner wall of the movable groove are respectively provided with a second spring and a third spring, and the end parts of the second spring and the third spring are respectively contacted with the front end surface and the rear end surface of the balance block.

Furthermore, in the above technical solution, the front and rear end faces of the base are respectively provided with a first mounting hole and a second mounting hole penetrating through the movable groove, the second spring and the third spring are respectively inserted into the first mounting hole and the second mounting hole, and the first mounting hole is further provided with a first screw, the end of the first screw abuts against the second spring, and the elastic force of the second spring is adjusted by screwing the depth of the first screw; the end part of the second screw props against the third spring, and the elasticity of the third spring is adjusted by screwing the depth of the second screw.

Furthermore, in the above technical scheme, the sliding seat is provided with a third mounting hole penetrating through the lower end face along the upper end face of the sliding seat, the balance block penetrates through the third mounting hole, the lower end of the balance block extends into the movable groove, a third screw is further spirally mounted on the outer side of the sliding seat, and the third screw abuts against the side face of the balance block.

Furthermore, in the above technical solution, the upper end of the balance block is further formed with a head portion extending outward, a limiting groove is further provided at an opening at the upper end of the third mounting hole, and the head portion is disposed in the limiting groove.

Furthermore, in the above technical solution, the sliding seat is provided with a sliding rail portion protruding outward on each of the left and right sides, the base is provided with a sliding groove adapted to the sliding rail portion, and the sliding rail portion is installed in the sliding groove and can slide in the front-rear direction.

Furthermore, in the above technical solution, the pin boss is provided with a screw hole penetrating through the left side surface along the right side surface thereof in an inclined upward direction, and the outer surface of the housing is provided with an external thread and is screwed and fixed in the screw hole through the external thread.

Further, in the above technical solution, the rear end of the housing is provided with a tool groove, and the tool groove is any one of a cross-shaped groove, a quincunx-shaped groove, a straight-line-shaped groove or a hexagonal-shaped groove.

Further, in the above technical solution, a spherical surface is provided at a front end of the pintle.

After adopting the technical scheme, compared with the prior art, the utility model has the following beneficial effects: in the actual use process, if a workpiece has a slight left-right direction deviation error after being placed, the front end of the pin can retract after being stressed and compress the first spring so as to realize the purpose of left-right direction floating, at the moment, the front end of the pin relatively deviates to the right, so that the front end of the pin can be embedded into the positioning hole of the workpiece, the deviation rectifying effect is achieved, the problem of unstable deformation caused by die casting of the workpiece is solved to a great extent, and the workpiece positioning precision and the workpiece processing qualified rate are greatly improved. In addition, if a slight front-back direction deviation error exists after the workpiece is placed, after the front end of the pin is subjected to a front-back direction force, the pin can only move in the left-right direction, so that the pin can drive the sliding seat to move in the front-back direction on the base, at the moment, the elastic balance state of the sliding seat is relieved, the sliding seat can compress the second spring or the third spring in the moving process to achieve the purpose of front-back direction floating, at the moment, the pin can also move in the front-back direction, so that the front end of the pin can be embedded into the positioning hole of the workpiece, the effect of correcting the position is achieved, the problem of unstable deformation caused by die casting of the workpiece is solved to a great extent, and the workpiece positioning precision and the workpiece processing qualified rate are greatly improved.

Description of the drawings:

FIG. 1 is a perspective view of the present invention;

FIG. 2 is a perspective view of another aspect of the present invention;

FIG. 3 is a perspective view of a locating pin according to the present invention;

fig. 4 is a cross-sectional view of the present invention.

The specific implementation mode is as follows:

the utility model is further illustrated below with reference to specific embodiments and the accompanying drawings.

As shown in fig. 1-4, the floating positioning fixture capable of correcting deviation includes a pin seat 1 and a positioning pin 2 installed on the pin seat 1, wherein an end of the positioning pin 2 protrudes out of a surface of the pin seat 1 to be inserted into a positioning hole of a workpiece, so as to position the workpiece.

The positioning pin 2 comprises a housing 21, a pin 22 penetrating the housing 21, and a first spring (not shown) disposed between the rear end of the pin 22 and the housing 21, wherein the front end of the pin 22 extends out of the front end of the housing 21 under the elastic force of the first spring, and after the front end of the pin 22 is stressed, the pin 22 retracts and compresses the first spring; the shell 21 is obliquely installed relative to the left and right directions of the pin boss 1, the front end of the pin 22 obliquely and upwards extends out of the surface of the pin boss 1, in the actual use process, if a workpiece is placed and has a slight left and right direction deviation error, the pin 22 can retract after the front end of the pin 22 is stressed and compresses the first spring to achieve the purpose of left and right direction floating, at the moment, the front end of the pin 22 relatively deviates to the right, so that the front end of the pin 22 can be embedded into a positioning hole of the workpiece, the effect of deviation correction is achieved, the problem of unstable deformation caused by die casting of the workpiece is solved to a great extent, and the accuracy of workpiece positioning and the qualified rate of workpiece processing are greatly improved.

The assembly structure of the positioning pin 2 and the pin seat 1 is as follows: the pin base 1 is provided with a screw hole 11 penetrating through the left side surface along the right side surface in an inclined and upward manner, the outer surface of the shell 21 is provided with an external thread and is fixed in the screw hole 11 in a spiral manner through the external thread, so that the stability of an assembly structure is ensured, and the size of the front end of a pin 22 in the positioning pin 2 extending out of the outer surface of the pin base 1 can be adjusted by adjusting the depth of the shell 21 screwed into the screw hole 11, so that different use requirements are met, and the positioning accuracy of the utility model is ensured.

The rear end of the housing 21 is provided with a tool groove 211, the tool groove 211 is any one of a cross-shaped groove, a quincunx-shaped groove, a straight-line-shaped groove or a hexagonal-shaped groove, and the housing 21 can be screwed after a tool is embedded into the tool groove 211 so as to drive the housing 21 to rotate.

The front end of the pin 22 is provided with a spherical surface which can play a good role in guiding, so that the pin can be better embedded into a positioning hole of a workpiece.

The pin seat 1 is installed on the sliding seat 3, the sliding seat 3 is installed on the base 4 in a front-back sliding mode, the balance weight 5 fixed at the lower end of the sliding seat 3 is arranged in the movable groove 41 of the base 4, the front inner wall and the rear inner wall of the movable groove 41 are respectively provided with a second spring 42 and a third spring 43, the end parts of the second spring 42 and the third spring 43 are respectively contacted with the front end surface and the rear end surface of the balance weight 5, so that the sliding seat 3 is in an elastic balance state through the contact of the second spring 42 and the third spring 43 with the balance weight 5 under the unstressed state, when the sliding seat 3 is stressed by the front-back direction force, the sliding seat 3 can move on the base 4 in the front-back direction, and in the moving process, the second spring 42 or the third spring 43 is compressed, and when the sliding seat 3 is not stressed by the front-back direction force, the second spring 42 or the third spring 43 can be reset, the sliding seat 3 returns to the elastic equilibrium state again. That is, in the actual use process, if there is a slight front-back direction deviation error after the workpiece is placed, after the front end of the pin 22 receives a front-back direction force, because the pin 22 can only move in the left-right direction, the pin 22 drives the sliding seat 3 to move in the front-back direction on the base 4, at this time, the elastic balance state of the sliding seat 3 is released, and the sliding seat 3 compresses the second spring 42 or the third spring 43 in the moving process to achieve the purpose of floating in the front-back direction, at this time, the pin 22 also moves in the front-back direction, so that the front end of the pin 22 can still be embedded into the positioning hole of the workpiece, thereby achieving the effect of deviation correction, largely solving the problem of unstable deformation caused by die casting of the workpiece, and greatly improving the precision of workpiece positioning and the qualified rate of the workpiece. And when the sliding seat 3 is not subjected to the force in the front-back direction any more, the second spring 42 or the third spring 43 is reset, and the sliding seat 3 returns to the elastic equilibrium state again.

The front and rear end surfaces of the base 4 are respectively provided with a first mounting hole 401 and a second mounting hole 402 which penetrate through the movable groove 41, the first mounting hole 401 and the second mounting hole 402 are in a horizontal state, the second spring 42 and the third spring 43 are respectively arranged in the first mounting hole 401 and the second mounting hole 402 in a penetrating manner, the first mounting hole 401 is internally provided with a first screw 44, the end part of the first screw 44 props against the second spring 42, and the elastic force of the second spring 42 is adjusted by screwing the depth of the first screw 44, so that the second spring 42 and the third spring 43 are relatively matched, and the balance block 5 can drive the sliding seat 3 to be in an elastic balance state; the first mounting hole 401 is further provided with a second screw 45, the end of the second screw 45 abuts against the third spring 43, and the depth of the second screw 45 is screwed to adjust the elastic force of the third spring 43, so as to ensure that the third spring 43 and the second spring 42 are relatively matched with the balance block 5 to drive the sliding seat 3 to be in an elastic balance state.

The sliding seat 3 is provided with a third mounting hole 31 penetrating through the lower end face along the upper end face of the sliding seat 3, the balance block 5 penetrates through the third mounting hole 31, the lower end of the balance block 5 extends into the movable groove 41, a third screw 32 is further spirally mounted on the outer side of the sliding seat 3, the third screw 32 abuts against the side face of the balance block 5, the balance block 5 is guaranteed to be stably mounted in the sliding seat 3, and the lower end of the balance block 5 extends out of the lower end face of the sliding seat 3. In order to facilitate the installation of the balance weight 5, the following design is made: the upper end of the balance weight 5 is further formed with a head 51 extending outward, the opening at the upper end of the third mounting hole 31 is further provided with a limiting groove 311, and the head 51 is disposed in the limiting groove 311, so as to prevent the balance weight 5 from falling out of the third mounting hole 31, and facilitate the later screwing in of the third screw 32, so as to press the side surface of the balance weight 5 through the third screw 32, and to stably mount the balance weight 5 in the sliding seat 3.

The left and right sides of the sliding seat 3 are provided with outward projecting sliding rail parts 33, the base 4 is provided with a sliding groove 403 adapted to the sliding rail parts 33, and the sliding rail parts 33 are installed in the sliding groove 403 and can slide in the front-back direction.

In summary, in the actual use process, if a workpiece is placed and has a slight left-right direction deviation error, after the front end of the pin 22 is stressed, the pin 22 retracts and compresses the first spring to achieve the purpose of left-right direction floating, at this time, the front end of the pin 22 relatively deviates to the right, so that the front end of the pin 22 can be embedded into the positioning hole of the workpiece, and therefore the deviation rectifying effect is achieved, the problem of unstable deformation caused by die casting of the workpiece is solved to a great extent, and the workpiece positioning precision and the workpiece processing yield are greatly improved. In addition, if a slight front-back direction offset error exists after the workpiece is placed, after the front end of the pin 22 receives a force in the front-back direction, the pin 22 can only move in the left-right direction, so that the pin 22 drives the sliding seat 3 to move in the front-back direction on the base 4, at this time, the elastic balance state of the sliding seat 3 is relieved, the sliding seat 3 compresses the second spring 42 or the third spring 43 in the moving process to achieve the purpose of front-back direction floating, at this time, the pin 22 also moves in the front-back direction, so that the front end of the pin 22 can be embedded into the positioning hole of the workpiece, thereby achieving the effect of deviation correction, solving the problem of unstable deformation caused by die casting of the workpiece to a great extent, and greatly improving the precision of workpiece positioning and the workpiece processing qualification rate.

It should be understood that the above description is only exemplary of the present invention, and is not intended to limit the scope of the present invention, which is defined by the appended claims.

Claims

1. A floating positioning clamp capable of correcting deviation comprises a pin base (1) and a positioning pin (2) arranged on the pin base (1), wherein the end part of the positioning pin (2) protrudes out of the surface of the pin base (1),

the method is characterized in that: the positioning pin (2) comprises a shell (21), a pin (22) penetrating through the shell (21) and a first spring arranged between the rear end of the pin (22) and the shell (21), and the front end of the pin (22) extends out of the front end surface of the shell (21) under the action of the elastic force of the first spring; the shell (21) is obliquely arranged relative to the left and right directions of the pin boss (1), and the front end of the pin (22) obliquely and upwards extends out of the surface of the pin boss (1); the pin seat (1) is arranged on the sliding seat (3), the sliding seat (3) is arranged on the base (4) in a front-back sliding mode, the balance block (5) fixed at the lower end of the sliding seat (3) is arranged in the movable groove (41) of the base (4), the front inner wall and the back inner wall of the movable groove (41) are respectively provided with a second spring (42) and a third spring (43), and the end parts of the second spring (42) and the third spring (43) are respectively contacted with the front end surface and the back end surface of the balance block (5).

2. The floating positioning fixture capable of correcting errors according to claim 1, wherein: the front end face and the rear end face of the base (4) are respectively provided with a first mounting hole (401) and a second mounting hole (402) which penetrate through a movable groove (41), the second spring (42) and the third spring (43) are respectively arranged in the first mounting hole (401) and the second mounting hole (402) in a penetrating mode, a first screw (44) is further arranged in the first mounting hole (401), the end portion of the first screw (44) abuts against the second spring (42), and the elastic force of the second spring (42) is adjusted by screwing the depth of the first screw (44); the first mounting hole (401) is also internally provided with a second screw (45), the end part of the second screw (45) is propped against the third spring (43), and the elasticity of the third spring (43) is adjusted by screwing the depth of the second screw (45).

3. The floating positioning fixture capable of correcting errors according to claim 1, wherein: the sliding seat (3) is provided with a third mounting hole (31) penetrating through the lower end face along the upper end face of the sliding seat, the balance block (5) penetrates through the third mounting hole (31), the lower end of the balance block (5) extends into the movable groove (41), a third screw (32) is further spirally mounted on the outer side of the sliding seat (3), and the third screw (32) abuts against the side face of the balance block (5).

4. The floating positioning fixture capable of correcting errors according to claim 3, wherein: the upper end of the balance block (5) is also formed with a head (51) extending outwards, a limiting groove (311) is further arranged at an opening at the upper end of the third mounting hole (31), and the head (51) is arranged in the limiting groove (311).

5. The floating positioning fixture capable of correcting errors according to any one of claims 1 to 4, wherein: the left side and the right side of the sliding seat (3) are respectively provided with a sliding rail part (33) protruding outwards, the base (4) is provided with a sliding groove (403) matched with the sliding rail part (33), and the sliding rail parts (33) are installed in the sliding grooves (403) and can slide in the front-back direction.

6. The floating positioning fixture capable of correcting errors according to any one of claims 1 to 4, wherein: the pin boss (1) is obliquely and upwards provided with a screw hole (11) penetrating through the left side surface along the right side surface, and the outer surface of the shell (21) is provided with an external thread and is spirally fixed in the screw hole (11) through the external thread.

7. The floating positioning fixture capable of correcting errors according to claim 6, wherein: the rear end of the shell (21) is provided with a tool groove (211), and the tool groove (211) is any one of a cross-shaped groove, a plum blossom-shaped groove, a straight-line-shaped groove or a hexagonal groove.

8. The floating positioning fixture capable of correcting errors according to any one of claims 1 to 4, wherein: the front end of the pin (22) is provided with a spherical surface.