CN215469764U

CN215469764U - Positioning fixture for anti-deformation gear ring

Info

Publication number: CN215469764U
Application number: CN202122340013.1U
Authority: CN
Inventors: 邱贤能
Original assignee: Zhejiang Fuku Industrial Technology Co ltd
Current assignee: Zhejiang Fuku Industrial Technology Co ltd
Priority date: 2021-09-26
Filing date: 2021-09-26
Publication date: 2022-01-11
Anticipated expiration: 2031-09-26

Abstract

The utility model provides a positioning fixture for an anti-deformation gear ring, which belongs to the technical field of machinery and comprises a workbench, a plurality of mounting seats with cavities inside are fixed on the surface of the workbench, a cylindrical block is fixed on the surface of each mounting seat, the top of the cylindrical block is fixed with a pressing plate, a plurality of guide grooves arranged in the radial direction are arranged in the cavity of the mounting seat along the circumferential direction of the cylindrical block, an L-shaped sliding rod is arranged in each guide groove, the horizontal part of each L-shaped sliding rod is positioned in each guide groove, the surface of the mounting seat is also provided with a plurality of sliding holes for the horizontal movement of the L-shaped sliding rods, the vertical parts of the L-shaped sliding rods penetrate through the sliding holes, and the top of the vertical part of the L-shaped sliding rod is fixed with an arc-shaped block, and the workbench is provided with a pushing mechanism which can enable the L-shaped sliding rod to horizontally move in the guide groove. The utility model has the advantages of simple structure, convenient operation and low production cost.

Description

Positioning fixture for anti-deformation gear ring

Technical Field

The utility model belongs to the technical field of machinery, relates to a positioning fixture, and particularly relates to a positioning fixture for an anti-deformation gear ring.

Background

When the outer circle of the thin-wall annular gear part is machined by an automatic lathe, a power chuck cannot be used generally, and an internal expansion elastic clamp or an end face pressing clamp is required. Because the rigidity of the thin-wall annular gear part is small, the existing internal expansion elastic clamp still can cause the part to generate clamping deformation, and the processing precision is influenced; the machining precision of the end face pressing fixture depends on the radial positioning precision of a part on the fixture, and when the part is required to be installed and taken out of the fixture, a radial gap must be reserved between the fixture and the part, and the position of the radial gap is randomly changed when the part is clamped, so that the radial installation gap of the end face pressing fixture influences the machining precision.

The existing gear ring clamp is an automatic clamp which is disclosed in a patent document (application number: CN201520758512.4) and has an inward expansion positioning and end surface pressing function on a thin-wall gear ring part, the installation gap between the clamp and the thin-wall gear ring part is eliminated through the inward expansion, the accurate positioning of the thin-wall gear ring is realized, the gear ring is fixed through the pressing end surface to form clamping, the problem of clamping deformation of the thin-wall gear ring part is solved, the operation is simple, but the automatic clamp which has the inward expansion positioning and end surface pressing function on the thin-wall gear ring part is complex in structure, the requirement on the machining precision is very strict when the automatic clamp is produced, and the production cost is high.

Disclosure of Invention

The utility model aims to solve the problems in the prior art, and provides a positioning fixture for an anti-deformation gear ring, which is used for solving the problems of complex structure and high production cost of the anti-deformation gear ring positioning fixture in the prior art.

The purpose of the utility model can be realized by the following technical scheme: the utility model provides a positioning fixture for preapring for an unfavorable turn of events shape ring gear, includes the workstation, the fixed surface of workstation has a plurality of inside mount pads that have the cavity, the surface of mount pad all is fixed with a cylinder piece, the top of cylinder piece all is fixed with a clamp plate, set up a plurality of guide ways that radially set up along the circumferencial direction of cylinder piece in the cavity of mount pad, all be provided with an L shape slide bar in the guide way, the horizontal part of L shape slide bar is located in the guide way, a plurality of slip holes that supply L shape slide bar horizontal migration are still seted up on the surface of mount pad, all wear out in the vertical portion of L shape slide bar the slip hole, and the vertical portion top of L shape slide bar all is fixed with an arc piece, be provided with on the workstation and can make L shape slide bar horizontal migration's in the guide way pushing mechanism.

Through adopting foretell technical scheme, when the positioning fixture of shape ring gear of preapring for an unfavorable turn of events began the during operation, can make a plurality of L shape slide bars receive thrust simultaneously through pushing mechanism, the horizontal part atress of L shape slide bar is along the tip horizontal migration of guide way direction towards the guide way, the vertical portion of L shape slide bar is along the direction horizontal migration that the slip hole is close to shape ring gear inner wall of preapring for an unfavorable turn of events, make the outer wall of a plurality of arc pieces towards the inner wall horizontal migration of shape ring gear of preapring for an unfavorable turn of events, when the outer wall of arc piece all removed to the position that leans on with the inner wall counterbalance of shape ring gear of preapring for an unfavorable turn of events, pushing mechanism continues to provide power to L shape slide bar, make preapring for an unfavorable turn of events shape ring gear can fix a position and fix on the outer wall of a plurality of arc pieces.

In the positioning fixture for the anti-deformation gear ring, the number of the guide grooves is four, and the four guide grooves are uniformly formed in the cavity of the mounting seat along the circumferential direction of the cylindrical block.

Through adopting foretell technical scheme for fix the arc piece evenly distributed at the vertical portion top of L shape slide bar, make the atress that is used in shape ring gear of preapring for an unfavorable turn of events even.

In foretell positioning fixture for preapring for an unfavorable turn of events shape ring gear, pushing mechanism including the cylinder that is fixed in the workstation bottom, the workstation on set up a plurality of and the through-hole of mount pad one-to-one, the piston rod of cylinder runs through the through-hole just is located the cavity of mount pad, it has a plurality of first connecting rods of evenly arranging along the circumferencial direction of piston rod to articulate on the piston rod of cylinder, the one end that is close to vertical portion on the horizontal part of L shape slide bar all articulates there is the second connecting rod, also sets up to articulated between first connecting rod and the second connecting rod that the one-to-one set up.

Through adopting foretell technical scheme, the piston rod that drives actuating cylinder moves vertically upwards, transmit piston rod vertical upward movement's power rather than on a plurality of first connecting rods of articulated, a plurality of first connecting rods transmit power to respectively with first connecting rod articulated second connecting rod again, last a plurality of second connecting rods will transmit power to respectively with second connecting rod articulated L shape slide bar's horizontal part on, a plurality of L shape slide bar's horizontal part along rather than corresponding guide way horizontal migration simultaneously, the horizontal migration of the arc piece of fixing on L shape slide bar vertical portion top has been driven, the outer wall of arc piece removes to the position that leans on with the shape ring gear of preapring for an unfavorable turn of events, accomplish location and the fixing to the shape ring gear of preapring for an unfavorable turn of events.

In foretell a positioning fixture for preapring for an unfavorable turn of events shape ring gear, guide way and L shape slide bar all be circular, the one end of keeping away from vertical portion on the horizontal part of L shape slide bar is fixed with a reset spring, and reset spring's the other end supports and leans on the lateral part at the guide way.

Through adopting foretell technical scheme, when the piston rod of cylinder was vertical when moving down, the thrust that L shape slide bar horizontal part received disappeared, and a plurality of L shape slide bars can move to original position under reset spring's effect.

In the positioning fixture for the anti-deformation gear ring, the cross sections of the guide groove and the horizontal part of the L-shaped slide bar are circular, and the guide groove and the horizontal part of the L-shaped slide bar are in clearance fit.

By adopting the technical scheme, the horizontal part of the L-shaped sliding rod can freely and horizontally slide in the guide groove.

In the positioning fixture for the anti-deformation gear ring, the inner walls of the arc-shaped blocks are matched with the outer wall of the cylindrical block, the outer walls of the arc-shaped blocks are matched with the inner wall of the anti-deformation gear ring, and the arc-shaped blocks can be combined to form a circular ring.

Through adopting foretell technical scheme, when the positioning fixture of the shape ring gear of preapring for an unfavorable turn of events is in operating condition, outer wall through the arc piece cooperatees with the inner wall of preapring for an unfavorable turn of events shape ring gear, the shape ring gear location of preapring for an unfavorable turn of events and fixing on the arc piece, when the positioning fixture stop work of preapring for an unfavorable turn of events shape ring gear, the arc piece all removes to leaning on the position with the counterbalance of cylinder piece outer wall under reset spring's effect, be favorable to reducing occupation space, a ring can make the whole inner wall atress of preapring for an unfavorable turn of events shape ring gear even to a plurality of arc pieces constitution simultaneously, better stability has when fixed preapring for an unfavorable turn of events shape ring gear.

In the positioning fixture for the anti-deformation gear ring, the cross sections of the mounting seat and the pressure plate are circular, and the top of the arc block is abutted against the bottom of the pressure plate.

Through adopting foretell technical scheme, columniform workpiece surface is softer smooth, is difficult to appear the condition that the staff collided with the injury, supports through the top with the arc piece and the bottom of clamp plate and leans on the setting for the arc piece can be along the clamp plate at horizontal migration's in-process, has improved arc piece horizontal migration's stationarity.

In the positioning fixture for the anti-deformation gear ring, the mounting seat, the cylindrical block and the pressing plate are coaxially arranged.

By adopting the technical scheme, the accuracy of positioning the anti-deformation gear ring in time can be better improved.

In foretell positioning fixture for preapring for an unfavorable turn of events shape ring gear, a plurality of recesses have been seted up to the lower surface of clamp plate, the top homogeneous body shaping of arc piece has the sand grip, and sand grip and recess phase-match, and the sand grip slides and sets up in the recess.

Through adopting foretell technical scheme for the arc piece can be more steady when moving along the clamp plate level.

In foretell a positioning fixture for preapring for an unfavorable turn of events shape ring gear, a plurality of spouts have been seted up to the lateral part of guide way, the horizontal part integrated into one piece of L shape slide bar has a plurality of draw runner, and draw runner and spout phase-match, and the draw runner slides and sets up in the spout.

By adopting the technical scheme, the horizontal part of the L-shaped sliding rod can move more stably in the guide groove.

Compared with the prior art, the utility model has the following advantages:

1. according to the positioning fixture for the anti-deformation gear ring, the power for positioning and fixing the anti-deformation gear ring is derived from the air cylinder, so that the mechanization is realized, the operation intensity of operators is reduced, the anti-deformation gear ring can be automatically positioned and fixed, and the working efficiency is higher.

2. According to the utility model, the arc-shaped blocks capable of forming a ring are arranged, so that the positioning accuracy is good when the inner wall of the anti-deformation gear ring is positioned and clamped, the stress on the inner wall of the anti-deformation gear ring can be uniform, and the stability of the anti-deformation gear ring in fixing is better.

3. The cross sections of the mounting seat, the cylindrical block and the pressing plate are all round, the surfaces of the mounting seat, the cylindrical block and the pressing plate are smooth and soft, and the occurrence of the phenomenon of bruising and bruising of workers can be effectively prevented.

4. According to the anti-deformation gear ring, the horizontal part of the L-shaped slide rod capable of horizontally moving in the guide groove is arranged, the arc-shaped block is fixed at the top end of the vertical part of the L-shaped slide rod, the air cylinder provides power for the L-shaped slide rod, the anti-deformation gear ring can be positioned and fixed, the groove is formed in the lower surface of the pressing plate, the convex strip is integrally formed in the top of the arc-shaped block, the arc-shaped block can be more stable when horizontally moving along the pressing plate, the structure is simple, the operation is convenient, the production difficulty is low, and the production cost can be effectively reduced.

5. The horizontal part of the L-shaped sliding rod is in clearance fit with the sliding groove, so that the vertical part of the L-shaped sliding rod can horizontally move in the sliding hole, the guide groove plays a role in guiding the movement of the L-shaped sliding rod, the sliding groove is formed in the side part of the guide groove, and the sliding strip is integrally formed on the horizontal part of the L-shaped sliding rod, so that the horizontal movement of the L-shaped sliding rod is more stable.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a front view of the present invention;

fig. 3 is a partial cross-sectional view of the present invention.

In the figure, 1, a workbench; 2. a mounting seat; 3. a cylindrical block; 4. pressing a plate; 5. an L-shaped sliding rod; 6. an arc-shaped block; 7. a cylinder; 8. a guide groove; 9. a first link; 10. a second link; 11. a return spring.

Detailed Description

The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.

As shown in fig. 1-3, a positioning fixture for preapring for an unfavorable turn of events shape ring gear, including workstation 1, workstation 1's surface welded fastening has four array distributions and inside mount pad 2 that has the cavity, mount pad 2's the equal welded fastening of upper surface has a cylinder piece 3, the equal welded fastening in top of cylinder piece 3 has a clamp plate 4, mount pad 2, cylinder piece 3 and the coaxial setting of clamp plate 4, mount pad 2, clamp plate 4's cross section all sets up to circularly, through setting up the work piece to cylindrically, the surface of cylindrical work piece is more smooth mellow and full, can effectively prevent that the staff because of colliding with and leading to the phenomenon of injury to take place. All still be provided with four L shape slide bars 5 along 3 circumferencial direction evenly distributed of cylinder piece on the mount pad 2, L shape slide bar 5 can be along the radial direction horizontal migration of cylinder piece 3, the top of the vertical portion of L shape slide bar 5 all is fixed with an arc piece 6, horizontal migration through L shape slide bar 5 makes the outer wall of arc piece 6 can be towards the inner wall horizontal migration of the shape ring gear of preapring for an unfavorable turn of events, and the inner wall through the outer wall of arc piece 6 and the shape ring gear of preapring for an unfavorable turn of events mutually supports and realizes the function to preapring for an unfavorable turn of events shape ring gear location and fix, the top of arc piece 6 supports with the bottom of clamp plate 4 and leans on, when L shape slide bar 5 is in atress horizontal migration, can not take place the displacement in vertical direction, the outer wall of arc piece 6 can cooperate better with the inner wall of preapring for an unfavorable turn of events shape ring gear location, more stabilize and preapring for an unfavorable turn of events shape ring gear fixed.

As shown in fig. 1 and 3, four through holes corresponding to the mounting seat 2 one by one are formed in the surface of the workbench 1, four air cylinders 7 corresponding to the through holes one by one are fixed at the bottom of the workbench 1, the cylinder bodies of the air cylinders 7 are all fixed at the bottom of the workbench 1, the piston rods of the air cylinders 7 are all vertically arranged upwards, a cavity is formed in the mounting seat 2, the piston rods of the air cylinders 7 all penetrate through the through holes and are located in the cavity of the mounting seat 2, the mounting seat 2 has a certain wall thickness, four guide grooves 8 radially arranged are formed in the mounting seat 2 along the circumferential direction of the cylindrical block 3, the four guide grooves 8 are uniformly formed in the cavity of the mounting seat 2 along the circumferential direction of the cylindrical block 3, the guide grooves 8 are all matched with the horizontal part of the L-shaped slide bar 5, the horizontal part of the L-shaped slide bar 5 is arranged in the guide grooves 8 in a clearance fit manner, the cross sections of the guide grooves 8 and the L-shaped slide bar 5 are all circular, the length of guide way 8 is greater than the length of L shape slide bar 5 horizontal part, and the horizontal part of L shape slide bar 5 can be in the free horizontal migration of guide way 8, and the upper surface of mount pad 2 is seted up and is supplied the sliding hole of the vertical horizontal migration of L shape slide bar 5, and the one end of keeping away from vertical portion on the horizontal part of L shape slide bar 5 is fixed with a reset spring 11, and the other end of reset spring 11 supports and leans on the lateral part at guide way 8. When the air cylinder 7 provides power for the horizontal part of the L-shaped sliding rod 5, the horizontal part of the L-shaped sliding rod 5 moves horizontally towards the end part of the guide groove 8 and extrudes the return spring 11, when a piston rod of the air cylinder 7 moves vertically downwards, the thrust applied to the horizontal part of the L-shaped sliding rod 5 disappears, the horizontal part moves to the original position along the guide groove 8 under the action of the return spring 11, and the arc-shaped block 6 is driven to move to the position abutting against the cylindrical block 3. Articulated on the piston rod of cylinder 7 have a plurality of evenly distributed's first connecting rod 9, the other end of first connecting rod 9 all articulates there is a second connecting rod 10, the other end of second connecting rod 10 all articulates with the horizontal part of L shape slide bar 5, when the vertical upward motion of piston rod of cylinder 7, through first connecting rod 9 and second connecting rod 10 with the vertical upward motion's of piston rod power transmission to L shape slide bar 5 on, the horizontal part of four L shape slide bar 5 is horizontal migration simultaneously in guide way 8, the vertical portion of four L shape slide bars 5 drives four arc piece 6 while horizontal migration of fixing at its top, until the outer wall of four arc piece 6 all with the inner wall counterbalance of preapring for an unfavorable turn of events shape ring gear, the piston rod of cylinder 7 continues to provide power and makes the outer wall of arc piece 6 compress tightly with the inner wall of preapring for an unfavorable turn of events shape ring gear, realized to preapring for an unfavorable turn of events shape ring gear location and fix.

As shown in fig. 1 and 2, the outer wall of arc piece 6 all with the inner wall phase-match of the shape ring gear of preapring for an unfavorable turn of events, the inner wall of arc piece 6 and the outer wall phase-match of cylinder piece 3, a complete ring can be constituteed to four arc pieces 6, when the outer wall of arc piece 6 removed to lean on with the inner wall counterbalance of the shape ring gear of preapring for an unfavorable turn of events, can make the inner wall of preapring for an unfavorable turn of events shape ring gear can both receive the power that radially compresses tightly, stability when fixing the shape ring gear of preapring for an unfavorable turn of events is better.

Particularly, four grooves have been seted up to the lower surface of every clamp plate 4, and the top integrated into one piece of every arc piece 6 has the sand grip, sand grip and groove phase-match, and the sand grip slides and sets up in the recess for when L shape slide bar 5 was driving 6 horizontal migration of arc piece, arc piece 6 can be along the more steady removal of the lower surface of clamp plate 4. A sliding groove is formed in the side portion of the guide groove 8 respectively, an upper sliding strip and a lower sliding strip are integrally formed on the horizontal portion of the L-shaped sliding rod 5, the sliding strips are matched with the sliding grooves, the sliding strips are arranged in the sliding grooves in a sliding mode, and the horizontal portion of the L-shaped sliding rod 5 can move in the guide groove 8 more stably.

The working principle of the utility model is as follows:

firstly, a piston rod of a driving cylinder 7 vertically moves upwards, the vertical upward force of the piston rod is transmitted to four first connecting rods 9 hinged with the piston rod, the four first connecting rods 9 respectively transmit the force to second connecting rods 10 hinged with the piston rod, the four second connecting rods 10 respectively transmit the force to L-shaped sliding rods 5 hinged with the piston rod, the four L-shaped sliding rods 5 are simultaneously stressed, so that the horizontal part of each L-shaped sliding rod 5 starts to horizontally move towards the end part of each guide groove 8 in each guide groove 8, and each L-shaped sliding rod 5 extrudes a return spring 11 in the horizontal moving process;

then, under the action of the thrust of the air cylinder 7, the arc-shaped block 6 fixed at the top end of the vertical parts of the four L-shaped slide rods 5 simultaneously moves horizontally towards the direction of the inner wall of the anti-deformation gear ring until the outer wall of the arc-shaped block 6 moves to a position abutting against the inner wall of the anti-deformation gear ring, and a piston rod of the air cylinder 7 continues to provide power for the L-shaped slide rods 5, so that the outer wall of the arc-shaped block 6 is tightly pressed against the inner wall of the anti-deformation gear ring, and the positioning and fixing of the anti-deformation gear ring are completed;

and finally, the piston rod of the driving cylinder 7 vertically moves downwards, the thrust force on the L-shaped slide rod 5 disappears, the horizontal part of the L-shaped slide rod 5 horizontally moves to the original position along the guide groove 8 towards the direction of the cylindrical block 3 under the action of the return spring 11, and the deformation-preventing gear ring can be taken down and the next deformation-preventing gear ring is installed and positioned.

The specific embodiments described herein are merely illustrative of the spirit of the utility model. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the utility model as defined in the appended claims.

Although the terms of the table 1, the mounting base 2, the cylindrical block 3, the pressing plate 4, the L-shaped sliding rod 5, the arc block 6, the cylinder 7, the guide groove 8, the first link 9, the second link 10, the return spring 11, etc. are used more frequently, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; it is to be construed that any additional limitation of the positioning jig for the deformation-preventing ring gear is contrary to the spirit of the present invention.

Claims

1. A positioning fixture for an anti-deformation gear ring comprises a workbench (1), wherein a plurality of mounting seats (2) with cavities inside are fixed on the surface of the workbench (1), a cylindrical block (3) is fixed on the surface of each mounting seat (2), a pressing plate (4) is fixed on the top of each cylindrical block (3), the positioning fixture is characterized in that a plurality of guide grooves (8) which are radially arranged are formed in the cavities of the mounting seats (2) along the circumferential direction of the cylindrical blocks (3), an L-shaped sliding rod (5) is arranged in each guide groove (8), the horizontal part of each L-shaped sliding rod (5) is located in each guide groove (8), a plurality of sliding holes for the L-shaped sliding rod (5) to horizontally move are further formed in the surface of each mounting seat (2), the vertical part of each L-shaped sliding rod (5) penetrates out of each sliding hole, an arc-shaped block (6) is fixed on the top of the vertical part of each L-shaped sliding rod (5), the workbench (1) is provided with a pushing mechanism which can enable the L-shaped sliding rod (5) to horizontally move in the guide groove (8).

2. The positioning fixture for the deformation-preventing gear ring according to claim 1, wherein the number of the guide grooves (8) is four, and the four guide grooves (8) are uniformly formed in the cavity of the mounting seat (2) along the circumferential direction of the cylindrical block (3).

3. The positioning fixture for the deformation-preventing gear ring according to claim 1, wherein the pushing mechanism comprises a cylinder (7) fixed at the bottom of the workbench (1), the workbench (1) is provided with a plurality of through holes corresponding to the mounting seats (2) one by one, a piston rod of the cylinder (7) penetrates through the through holes and is located in the cavity of the mounting seats (2), a plurality of first connecting rods (9) are hinged to the piston rod of the cylinder (7) and are uniformly arranged along the circumferential direction of the piston rod, one end of the horizontal part of the L-shaped sliding rod (5) close to the vertical part is hinged to a second connecting rod (10), and the first connecting rods (9) and the second connecting rods (10) arranged in a one-to-one correspondence manner are hinged to each other.

4. The positioning jig for the deformation-preventing ring gear according to claim 2, wherein the guide groove (8) and the horizontal portion of the L-shaped slide bar (5) have circular cross sections, and the guide groove (8) and the horizontal portion of the L-shaped slide bar (5) are in clearance fit with each other.

5. The positioning jig for the deformation-preventing ring gear according to claim 2, wherein a return spring (11) is fixed to one end of the horizontal portion of the L-shaped sliding bar (5) which is far from the vertical portion, and the other end of the return spring (11) abuts against a side portion of the guide groove (8).

6. The positioning fixture for the deformation-preventing gear ring according to claim 1, wherein the outer wall of the arc-shaped blocks (6) is matched with the inner wall of the deformation-preventing gear ring, the inner wall of the arc-shaped blocks (6) is matched with the outer wall of the cylindrical block (3), and a plurality of the arc-shaped blocks (6) can be combined to form a circular ring.

7. The positioning fixture for the deformation-preventing gear ring according to claim 1, wherein the cross sections of the mounting seat (2) and the pressure plate (4) are circular, and the tops of the arc-shaped blocks (6) are abutted against the bottom of the pressure plate (4).

8. The positioning fixture for the deformation-preventing gear ring according to claim 1, wherein the mounting seat (2), the cylindrical block (3) and the pressing plate (4) are coaxially arranged.

9. The positioning fixture for the deformation-preventing gear ring according to claim 1, wherein a plurality of grooves are formed in the lower surface of the pressing plate (4), protruding strips (12) are integrally formed at the tops of the arc-shaped blocks (6), the protruding strips (12) are matched with the grooves, and the protruding strips (12) are slidably arranged in the grooves.

10. The positioning fixture for the deformation-preventing gear ring according to claim 1, wherein a plurality of sliding grooves are formed in the side portion of the guide groove (8), a plurality of sliding bars (13) are integrally formed on the horizontal portion of the L-shaped sliding bar (5), the sliding bars (13) are matched with the sliding grooves, and the sliding bars (13) are slidably disposed in the sliding grooves.