CN211361966U

CN211361966U - Work fixture with load overturning function

Info

Publication number: CN211361966U
Application number: CN201921945515.3U
Authority: CN
Inventors: 张峰; 沈帅杰
Original assignee: Shanghai Volkswagen United Development Body Parts Co Ltd
Current assignee: Shanghai Volkswagen United Development Body Parts Co Ltd
Priority date: 2019-11-12
Filing date: 2019-11-12
Publication date: 2020-08-28
Anticipated expiration: 2029-11-12

Abstract

The utility model relates to a frock clamp of area load upset function, including the work piece plummer, first supporting station, the second brace table, shaft coupling drive mechanism, manual/pneumatic locking mechanism and pneumatic area buffering locking mechanism, shaft coupling drive mechanism fixes at first supporting station top, shaft coupling drive mechanism connects the work piece plummer, manual/pneumatic locking mechanism fixes on the lateral wall of first supporting station, manual/pneumatic locking mechanism connects the work piece plummer, pneumatic area buffering locking mechanism locates on the second brace table, and pneumatic area buffering locking mechanism corresponds the position setting with manual/pneumatic locking mechanism, shaft coupling drive mechanism is including fixing the shaft coupling on first supporting station, runner and two axle bushes of being connected with the shaft coupling, the shaft coupling passes two axle bushes, the work piece plummer is connected to the other end of shaft coupling. Compared with the prior art, the utility model has the advantages of tight stability height of clamp, operation safety, long service life etc.

Description

Work fixture with load overturning function

Technical Field

The utility model belongs to the technical field of automobile body frock clamp technique and specifically relates to a frock clamp of area load upset function is related to.

Background

In the process of manufacturing the workpiece, the proper clamp is designed, so that the workpiece processing precision can be ensured, and the processing working efficiency can be improved; the fixture design is therefore a critical part of the manufacturing process. In the existing vehicle body processing equipment, a station overturning tool clamp used for processing a front bottom plate of a vehicle body comprises an overturning structure for overturning a part processing table and clamping mechanisms symmetrically arranged on two sides of the part processing table. The turnover mechanism utilizes the gearbox to provide power, the clamping mechanism utilizes the matching effect of the limiting disc and the limiting pin to limit the chuck, the chuck is locked through the limiting connecting rod locking mechanism, and then the part processing table is locked.

However, the structure of the existing station overturning tool clamp mainly has the following problems: 1. the friction between the limiting disc and the limiting pin causes high wear rate of the limiting disc; 2. in the rotation process of the gearbox, the load inertia force is large, the connection position of the gearbox shaft and the coupling is broken, and the service life is short; 3. the limiting connecting rod locking mechanism has insufficient rigidity, low strength, large rotating load inertia force and stress deformation. The problems lead to high maintenance rate and long time consumption of fault maintenance, and seriously affect the JPH production capacity.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a frock clamp of area load upset function in order to overcome the defect that above-mentioned prior art exists.

The purpose of the utility model can be realized through the following technical scheme:

a tool clamp with a load overturning function comprises a workpiece bearing table, a first supporting table and a second supporting table which are arranged at two ends of the workpiece bearing table, and further comprises a coupling transmission mechanism, a manual/pneumatic locking mechanism and a pneumatic belt buffering locking mechanism, wherein the coupling transmission mechanism is fixed at the top of the first supporting table, the coupling transmission mechanism is connected with the workpiece bearing table, the manual/pneumatic locking mechanism is fixed on the side wall of the first supporting table, the manual/pneumatic locking mechanism is connected with the workpiece bearing table, the pneumatic belt buffering locking mechanism is arranged on the second supporting table, the pneumatic belt buffering locking mechanism is arranged at a position corresponding to the manual/pneumatic locking mechanism, the coupling transmission mechanism comprises a coupling, a bearing bush and a rotating wheel which are fixed on the first supporting table, the coupling penetrates through the bearing bush, and one end of the coupling fixes the rotating wheel, the other end is connected with a workpiece bearing platform.

Preferably, manual/pneumatic locking mechanism include first connecting block, locate two first locking cylinders, two first chucks on the first connecting block, first connecting block fix on the lateral wall of first supporting bench, the both ends symmetry of first connecting block sets up a first locking cylinder, a first chuck, first chuck is connected with first locking cylinder, two first chucks press from both sides tight work piece plummer under operating condition.

Preferably, pneumatic area buffering locking mechanism include stand, buffer, stopper, second connecting block, a plane supporting bench, two second chucks, two second locking cylinders, stand and the anterior plane fixed connection of a second supporting bench, a plane supporting bench locates the top of stand, the stopper second connecting block fix on a plane supporting bench, the buffer run through the setting on a plane supporting bench, two second locking cylinders locate the stand both sides, two second locking cylinders connect two second chucks respectively.

Preferably, the second chuck and the first chuck are correspondingly arranged in a locking state.

Preferably, the top of the second locking cylinder is provided with a cylinder clamping arm, the piston of the second locking cylinder is connected with the cylinder clamping arm, and the cylinder clamping arm is connected with the second chuck.

Preferably, under the non-locking state, the tops of the limiting blocks and the buffers are arranged on the same plane, under the locking state, the limiting blocks and the buffers prop against the bottom of the workpiece bearing table, and the bottom of the second chuck is pressed against the top of the workpiece bearing table.

Preferably, the second chuck is an L-shaped chuck, the bottom of one end of the cylinder clamping arm is fixedly connected with the horizontal part of the L-shaped chuck, and the vertical part of the L-shaped chuck presses the workpiece bearing table in a locking state.

Preferably, the clamp further comprises a pneumatic button switch, and the pneumatic button switch is connected with the first locking cylinder and the second locking cylinder.

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

1) the utility model discloses a frock clamp with load upset function improves the clamping mechanism that original symmetry set up, and the manual/pneumatic locking mechanism of work piece plummer one end sets up first locking cylinder and first chuck, and the pneumatic area buffering locking mechanism of the work piece plummer other end is equipped with buffer, stand, second locking cylinder, second chuck, can further improve the stability of the clamp of work piece plummer;

2) the pneumatic belt buffering locking mechanism is provided with a buffer, so that the load inertia impact force of the workpiece bearing table during overturning can be reduced, the service life of the whole clamp is prolonged, and the operation is safer;

3) the coupling transmission mechanism is adopted to provide rotary power, the problem that the use wear rate of the limiting disc is high due to friction between the limiting disc and the limiting pin is avoided, the service life of the rotary mechanism is prolonged, and the operation is safer.

Drawings

Fig. 1 is a schematic structural view of a work fixture with a load turning function in an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a manual/pneumatic locking mechanism in an embodiment of the present invention;

fig. 3 is a schematic structural view of a coupling transmission mechanism according to an embodiment of the present invention;

fig. 4 is a partial schematic structural view of a pneumatic belt buffering locking mechanism in an embodiment of the present invention;

the reference numbers in the figures indicate:

1. the coupling transmission mechanism, 2, manual/pneumatic locking mechanism, 3, the work piece plummer, 4, pneumatic area buffering locking mechanism, 5, a supporting bench, 6, a second supporting bench, 7, pneumatic button switch, 11, the coupling, 12, axle bush, 13, the runner, 21, first connecting block, 22, first locking cylinder, 23, first chuck, 41, buffer, 42, the stand, 43, a second locking cylinder, 44, a second chuck, 45, a limiting block, 46, a second connecting block, 47, a plane supporting bench, 48, the cylinder arm lock.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. It is to be understood that the embodiments described are only some of the embodiments of the present invention, and not all of them. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall fall within the protection scope of the present invention.

Examples

As shown in fig. 1, the utility model relates to a frock clamp of area load upset function, including coupling drive mechanism 1, manual/pneumatic locking mechanism 2, pneumatic area buffering locking mechanism 4, work piece plummer 3, first supporting bench 5, second supporting bench 6. The first support table 5 and the second support table 6 are provided at both ends of the workpiece support table 3. The coupling transmission mechanism 1 is fixed on the first supporting table 5, and the manual/pneumatic locking mechanism 2 is fixed on the side wall of the first supporting table 5. The pneumatic belt buffer locking mechanism 4 is arranged on the second support table 6. The manual/pneumatic locking mechanism 2 is arranged corresponding to the position of the pneumatic belt buffering locking mechanism 4.

The both ends of work piece plummer 3 are equipped with the rotary rod, and coupling drive mechanism 1 is connected to one end, and second brace table 6 is connected to the other end, and the top of second brace table 6 is equipped with the rotary hole that the rotary rod that is used for supporting work piece plummer 3 carries out the rotation. And fixing rods are symmetrically arranged at two ends of the workpiece bearing table 3 and are used for being matched with the manual/pneumatic locking mechanism 2 and the pneumatic belt buffering locking mechanism 4 to lock the workpiece bearing table 3. The workpiece bearing table 3 is provided with a tool for placing a part to be processed.

As shown in fig. 2, the manual/pneumatic locking mechanism 2 includes a first connecting block 21, a first locking cylinder 22, and a first chuck 23. The first connecting block 21 is fixed on the side wall of the first supporting table 5, the two first locking cylinders 22 and the first clamping heads 23 are respectively arranged on the first connecting block 21 and are symmetrically arranged, and the first clamping heads 23 are connected with the first locking cylinders 22. The two first clamping jaws 23 clamp the fastening bars of the workpiece carrier table 3 in the operating state.

As shown in fig. 3, the coupling transmission mechanism 1 is used for providing power for adjusting the height of the workpiece bearing table 3, and comprises a coupling 11, a bearing bush 12 and a rotating wheel 13. The bearing shell 12 is fixed on top of the first support table 5. The coupling 11 penetrates through the bearing bush 12, one end of the coupling 11 is fixed with the rotating wheel 13, and the other end of the coupling 11 is connected with the workpiece bearing table 3 and used for adjusting the height of the workpiece bearing table 3 through rotation of the rotating wheel 13, so that the height of a part to be machined on the workpiece bearing table 3 is adjusted.

As shown in fig. 4, the pneumatic belt buffer locking mechanism 4 includes a column 42, a buffer 41, a second locking cylinder 43, a second chuck 44, a limiting block 45, a second connecting block 46, and a plane supporting table 47. The upright column 42 is fixedly connected with the front plane of the second support platform 6, and the top of the upright column 42 is provided with a plane support platform 47. The plane support platform 47 is fixed with a limit block 45 and a second connecting block 46, and the buffer 41 is arranged on the plane support platform 47 in a penetrating way. Two second locking cylinders 43 are symmetrically arranged on two sides of the upright post 42 (the second locking cylinder is not shown in the figure), a cylinder clamping arm 48 is arranged on the top of the second locking cylinder 43, the cylinder clamping arm 48 is connected with a piston in the second locking cylinder 43, and the second chuck 44 is connected with the cylinder clamping arm 48. Driven by the second locking cylinder 43, the cylinder clamp arm 48 moves clockwise or counterclockwise, and then drives the second chuck 44 to move up and down. The second chuck 44 is an L-shaped chuck, and the bottom of one end of the cylinder clamping arm 48 is fixedly connected with the horizontal part of the L-shaped chuck. The vertical part of the L-shaped clamp is used to press the fixing bar of the workpiece carrier table 3. Under the non-locking state, the tops of the limiting block 45 and the buffer 41 are located on the same plane, under the locking state, the bottom of the fixing rod of the workpiece bearing table 3 is arranged at the tops of the limiting block 45 and the buffer 41, and the top of the fixing rod of the workpiece bearing table 3 is pressed through the L-shaped chuck.

The first locking cylinder and the second locking cylinder in the embodiment can be controlled by the same pneumatic button switch 7, and each locking cylinder is connected with the pneumatic button switch 7.

The utility model discloses the theory of operation of device does:

when the utility model discloses frock clamp's work piece plummer is returned to the normal position (be parallel with the horizontal plane promptly), then puts into the frock of work piece plummer with new part, rotates the runner and makes the work piece plummer overturn to 180, and then makes the part upset 180. The locking air cylinders are controlled manually, so that the sensing signals are in place, then the pneumatic button switches are pressed, the chucks controlled by the four locking air cylinders are simultaneously buffered and locked, the workpiece bearing table is guaranteed not to shake, further, parts are guaranteed to be stable, and then operations such as welding can be performed. After the operation is finished, the pneumatic button switch is pressed again, all the clamping chucks are opened, the rotating wheel is rotated to enable the workpiece bearing table to return to the original position, namely, the part returns to the original position, the finished part is taken down, and a working cycle is finished. And putting the next part to be operated.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of various equivalent modifications or replacements within the technical scope of the present invention, and these modifications or replacements should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A tool clamp with a load overturning function comprises a workpiece bearing table (3), a first supporting table (5) and a second supporting table (6) which are arranged at two ends of the workpiece bearing table (3), and is characterized by further comprising a coupling transmission mechanism (1), a manual/pneumatic locking mechanism (2) and a pneumatic belt buffering locking mechanism (4), wherein the coupling transmission mechanism (1) is fixed at the top of the first supporting table (5), the coupling transmission mechanism (1) is connected with the workpiece bearing table (3), the manual/pneumatic locking mechanism (2) is fixed on the side wall of the first supporting table (5), the manual/pneumatic locking mechanism (2) is connected with the workpiece bearing table (3), the pneumatic belt buffering locking mechanism (4) is arranged on the second supporting table (6), and the pneumatic belt buffering locking mechanism (4) and the manual/pneumatic locking mechanism (2) are arranged in a corresponding position, the coupling transmission mechanism (1) comprises a coupling (11), a bearing bush (12) and a rotating wheel (13) which are fixed on a first supporting platform (5), the coupling (11) penetrates through the bearing bush (12), the rotating wheel (13) is fixed at one end of the coupling (11), and the other end of the coupling is connected with a workpiece bearing platform (3).

2. The tooling clamp with the load overturning function according to claim 1, wherein the manual/pneumatic locking mechanism (2) comprises a first connecting block (21), two first locking cylinders (22) and two first chucks (23) which are arranged on the first connecting block (21), the first connecting block (21) is fixed on the side wall of the first supporting platform (5), the two ends of the first connecting block (21) are symmetrically provided with the first locking cylinders (22) and the first chucks (23), the first chucks (23) are connected with the first locking cylinders (22), and the two first chucks (23) clamp the workpiece bearing platform (3) in a working state.

3. The tool clamp with the load overturning function as claimed in claim 2, the pneumatic belt buffering and locking mechanism (4) comprises an upright post (42), a buffer (41), a limiting block (45), a second connecting block (46), a plane supporting table (47), two second clamping heads (44) and two second locking cylinders (43), the upright post (42) is fixedly connected with the front plane of the second support platform (6), the plane support platform (47) is arranged at the top of the upright post (42), the limiting block (45) and the second connecting block (46) are fixed on the plane supporting platform (47), the buffer (41) is arranged on the plane supporting platform (47) in a penetrating mode, the two second locking cylinders (43) are arranged on two sides of the upright post (42), and the two second locking cylinders (43) are connected with the two second clamping heads (44) respectively.

4. A tooling fixture with a load reversing function according to claim 3, characterized in that the second collet (44) and the first collet (23) are correspondingly arranged in a locked state.

5. A tool clamp with a load overturning function according to claim 3, wherein a cylinder clamping arm (48) is arranged at the top of the second locking cylinder (43), a piston of the second locking cylinder (43) is connected with the cylinder clamping arm (48), and the cylinder clamping arm (48) is connected with the second chuck (44).

6. The tooling clamp with the load overturning function according to claim 5, wherein the tops of the limiting block (45) and the buffer (41) are arranged on the same plane in the non-locking state, the limiting block (45) and the buffer (41) prop against the bottom of the workpiece bearing table (3) in the locking state, and the bottom of the second chuck (44) is pressed against the top of the workpiece bearing table (3).

7. A tool clamp with a load overturning function according to claim 6, wherein the second chuck (44) is an L-shaped chuck, the bottom of one end of the cylinder clamping arm (48) is fixedly connected with the horizontal part of the L-shaped chuck, and in a locked state, the vertical part of the L-shaped chuck presses the workpiece bearing table (3).

8. A tool clamp with a load overturning function according to claim 3, further comprising a pneumatic button switch (7), wherein the pneumatic button switch (7) is connected with the first locking cylinder (22) and the second locking cylinder (43).