CN112975509B

CN112975509B - Efficiency of is improved many anchor clamps of sheet metal component frock

Info

Publication number: CN112975509B
Application number: CN202110360773.0A
Authority: CN
Inventors: 徐峰
Original assignee: Shanghai Tongcheng Enterprise Development Co ltd
Current assignee: Shanghai Tongcheng Enterprise Development Co ltd
Priority date: 2021-04-02
Filing date: 2021-04-02
Publication date: 2022-08-09
Anticipated expiration: 2041-04-02
Also published as: CN112975509A

Abstract

The application relates to a multi-clamp tool for sheet metal parts, which can improve the efficiency, relates to the technical field of sheet metal part processing, and aims to solve the problems that in the process of clamping and processing the sheet metal parts, the feeding is carried out by operators during each processing, the machine needs to be stopped after the processing so that the operators can take materials, the technical problem of low processing efficiency caused by frequent starting and stopping of the machine when the number of processed pieces is large exists, which comprises a frame and a workbench arranged on the frame, wherein a clamping driving piece is arranged at the central position of the workbench, the output shaft of the clamping driving piece is provided with a limiting block, the output shaft of the clamping driving piece is sleeved with a clamping plate, the lateral wall of grip block is provided with a plurality of laminating facades that are used for supplying the sheet metal component laminating, the centre gripping driving piece is used for driving stopper butt grip block and carries out the centre gripping fixedly in order to carry out a plurality of sheet metal components on the workstation surface. This application has a plurality of sheet metal components of disposable centre gripping, reduces to open the effect of stopping the number of times in order to improve sheet metal component machining efficiency.

Description

Efficiency of is improved many anchor clamps of sheet metal component frock

Technical Field

The application relates to the field of sheet metal part machining, in particular to a sheet metal part multi-clamp tool for improving efficiency.

Background

Sheet metal is a comprehensive cold working process for sheet metal (generally below 6 mm), including shearing, punching/cutting/compounding, folding, welding, riveting, splicing, forming (such as automobile bodies), and the like. The remarkable characteristic is that the thickness of the same part is consistent. The products processed by the sheet metal process are called sheet metal parts, and the sheet metal parts in different industries are generally different and are mostly used as names in assembly and timing.

Among the correlation technique, chinese patent with publication No. CN211615334U discloses a be applied to frock clamp of panel beating part, it includes the base, the base is the cylinder base, be provided with reference column and polylith locating plate on the base, the reference column is located the center of base, the top of reference column outwards extends has the rotating plate, the rotating plate constitutes calabash column structure with the reference column, the top of locating plate is supported to the bottom of rotating plate, the circumference equidistance setting of polylith locating plate along the base, the reference column is supported to the one end of locating plate, the other end of locating plate outwards extends the base.

According to the related technology, in the process of clamping and machining the sheet metal part, the operator is required to feed the sheet metal part in each machining process, the machine needs to be stopped after the sheet metal part is machined, so that the operator can take the sheet metal part conveniently, and the inventor thinks that the defect that the machining efficiency is low due to the fact that the machine needs to be frequently started and stopped when the number of the sheet metal part to be machined is large exists.

Disclosure of Invention

In order to improve the machining efficiency because of processing many times, this application provides a sheet metal component multi-clamp frock of raising the efficiency.

The application provides a many anchor clamps of sheet metal component frock that raises efficiency adopts following technical scheme:

the utility model provides an efficiency of is improved many anchor clamps of sheet metal component frock, includes the frame and sets up the workstation in the frame, the workstation is located central point and puts and be provided with the centre gripping driving piece, be provided with the stopper on the output shaft of centre gripping driving piece, the cover is equipped with the grip block on the output shaft of centre gripping driving piece, the lateral wall of grip block is provided with a plurality of laminating facades that are used for supplying the sheet metal component laminating, the centre gripping driving piece is used for driving stopper butt grip block and carries out the centre gripping fixedly in order to carry out a plurality of sheet metal components on the workstation surface.

Through adopting above-mentioned technical scheme, the sheet metal component laminating is on the facade of laminating for the area of contact increase of sheet metal component and grip block, and the centre gripping driving piece returns to contract and drives the sheet metal component of laminating on the facade of laminating on the surface of grip block centre gripping workstation, can press from both sides tight fixed to a plurality of sheet metal components simultaneously, has realized a centre gripping, and multiple processing has significantly reduced the time of frequently shutting down the start, has improved the efficiency of sheet metal component processing.

Preferably, the mounting hole has been seted up to grip block position central point, grip block one side is provided with the mounting groove that extends to the mounting hole, be provided with in the mounting hole and be used for fixing the fixed subassembly on the output shaft of centre gripping driving piece with the grip block.

Through adopting above-mentioned technical scheme, through mounting groove and mounting hole, can put the central point that the output shaft joint of centre gripping driving piece to the mounting hole, and fixed subassembly can fix the grip block on the output shaft of centre gripping driving piece, therefore can make the grip block can convenient to detach and change to make anchor clamps frock can be adapted to not unidimensional sheet metal component.

Preferably, fixed subassembly is including setting up the centre gripping block rubber on the mounting hole inner wall, the communicating logical groove with the mounting groove is seted up to the centre gripping block rubber, the centre gripping block rubber is provided with the spigot surface that the groove center slope is led to the orientation, centre gripping block rubber center seted up with lead to the groove communicate with each other and with the output shaft interference fit's of centre gripping driving piece centre gripping hole.

By adopting the technical scheme, the output shaft of the driving part is clamped into the clamping hole through the through groove under the guiding action of the guiding surface, so that the output shaft of the driving part is clamped through the clamping rubber block, the clamping plate is conveniently and quickly fixed on the output shaft of the driving part, the efficiency of replacing the clamping plate is greatly improved, and the clamping plate can be flexibly replaced when different sheet metal parts are clamped; and the guide surface is arranged.

Preferably, the cover is equipped with the magnetic means who laminates mutually with the grip block on the stopper, magnetic means is used for making the grip block have the magnetism of inhaling mutually with sheet metal component magnetism with the grip block magnetization, magnetic means is connected with the regulating switch who adjusts magnetic force size.

By adopting the technical scheme, the magnetic device can adjust the existence and the magnitude of the magnetic force of the magnetic device through the adjustment of the adjusting switch, and the magnetic device can adsorb the sheet metal part after magnetizing the clamping plate, so that the surface of the sheet metal part is attached to the surface of the attaching vertical surface and is closely adsorbed and fixed on the attaching vertical surface of the clamping plate, and the fixing stability of the sheet metal part is improved; on the other hand, the magnetic device can adsorb the scraps produced in the machining process, so that the scraps can be conveniently collected.

Preferably, the rack is provided with a rotating groove for the workbench to be embedded, the rack is provided with a yielding hole for the clamping driving piece to be inserted into at the center of the bottom of the rotating groove, the center of the workbench is provided with a supporting tube for the clamping driving piece to be inserted into, the outer side wall of the supporting tube is provided with a rotating mechanism for driving the supporting tube to rotate, and the outer side wall of the supporting tube is provided with a locking assembly for fixing the clamping driving piece in the supporting tube.

Through adopting above-mentioned technical scheme, the centre gripping driving piece in the stay tube passes through the lock solid subassembly to be fixed in the stay tube, and the stay tube can play the effect of carrying out the protection to the centre gripping driving piece on the one hand, and the rotary mechanism that on the other hand stay tube lateral wall set up can drive the stay tube and rotate to drive the workstation and rotate, turn to the place of waiting to process one by one with the sheet metal component on the workstation, realized the switching of sheet metal component, thereby process in order to the sheet metal component.

Preferably, the locking assembly comprises a rubber ring arranged in the supporting pipe and a locking rod connected to the top of the rubber ring in a sliding manner, a fixing block is arranged at the bottom of the clamping driving piece, and a fixing hole for the locking rod to be inserted is formed in the fixing block.

By adopting the technical scheme, the clamping driving piece is inserted into the rubber ring, and the rubber ring is extruded, so that the clamping driving piece is fixed in the supporting tube under the action of friction force; on the other hand slide the locking pole of connecting in the stay tube lateral wall and insert and establish in the fixed orifices, can fix a position the fixed block, provide spacing effort for the centre gripping driving piece, fixed the cylinder body that presss from both sides the driving piece.

Preferably, the rubber ring is provided with the direction inclined plane that top-down inclined, the locking rod tip is provided with the inclined plane of stepping down that is convenient for step down when locking fixed block butt locking pole, the one end that the stay tube was worn out to the locking pole is provided with reset spring, reset spring one end sets up on the locking pole, and the other end sets up on the lateral wall of stay tube provides the elastic force that resets in inserting the fixed orifices for the locking pole.

By adopting the technical scheme, on one hand, the arrangement of the guide inclined plane is convenient for playing a role of guiding when the clamping driving piece is inserted in the middle of the rubber ring, and is convenient for the clamping driving piece to be inserted in the guide inclined plane; on the other hand, the guide inclined plane can provide an upward acting force for the clamping driving piece, and under the acting force, the locking rod abuts against the inner wall of the fixing hole, so that the locking rod is prevented from being separated from the fixing hole; the stepping inclined plane on the locking rod can drive the locking rod to move towards the direction of keeping away from the fixing hole when the clamping driving piece is in downward butt stepping inclined plane, and meanwhile, the reset spring is extended, and when the fixing hole slides to the parallel position of the locking rod, the reset spring provides reset acting force, so that the locking rod is automatically inserted into the fixing hole, and the clamping driving piece is convenient to fix quickly.

Preferably, the rotating mechanism comprises a worm wheel arranged on the outer side wall of the support tube, a worm meshed with the rotating gear, and a rotating driving piece arranged at one end of the worm, wherein the rotating driving piece is used for driving the worm to rotate.

By adopting the technical scheme, the driving part drives the worm to rotate, and the worm drives the worm wheel to rotate due to the mutual meshing of the worm and the worm wheel, so that the workbench is driven to rotate; on the other hand, the worm and gear can be self-locked in cooperation, so that the workbench is kept at the current position, and the stability of the workbench during sheet metal part machining is guaranteed.

Preferably, the output shaft of the clamping driving member is provided with a limiting hole at the bottom of the limiting block, the clamping plate is provided with a positioning hole communicated with the limiting hole at one side of the inner wall of the mounting hole far away from the mounting groove, and a limiting rod inserted in the limiting hole is arranged in the positioning hole.

Through adopting above-mentioned technical scheme, the gag lever post is inserted from the mounting groove and is established in locating hole and spacing hole, further fixes the grip block on the output shaft of centre gripping driving piece, because the gag lever post is inserted from the mounting groove and is established in spacing hole and locating hole, therefore is more convenient for fix the gag lever post.

Preferably, a rotating block is arranged at one end of the limiting rod, threads connected with the positioning hole threads are arranged at one end, far away from the rotating block, of the limiting rod, and the abutting rubber ring is sleeved on the limiting rod.

Through adopting above-mentioned technical scheme, the setting of turning block is convenient for rotate to realize the tip and the locating hole threaded connection of gag lever post, the screw thread of the tip of gag lever post with support tight rubber ring and mutually support, can prevent that the gag lever post from deviating from the locating hole.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the technology that the rack, the workbench, the clamping driving piece, the limiting block, the clamping plate, the attaching vertical faces, the magnetic device and the adjusting switch are matched is adopted, so that the sheet metal parts on the attaching vertical faces can be clamped and fixed conveniently in one-time movement, and the processing efficiency of the sheet metal parts is greatly improved;

2. the clamping plate is conveniently fixed on the output shaft of the clamping driving piece by adopting the technology of matching the mounting hole, the mounting groove, the clamping rubber block, the through groove, the guide surface, the clamping hole, the limiting hole, the positioning hole, the salty rod, the rotating block, the thread and the abutting rubber ring;

3. through adopting the rotating groove, the hole of stepping down, stay tube, rubber ring, lock pole, fixed block, fixed orifices, direction inclined plane, the inclined plane of stepping down, reset spring, turbine, worm and rotation driving piece matched with technique to be convenient for drive workstation rotates and processes in order to the sheet metal component on the different laminating facades.

Drawings

Fig. 1 is a schematic structural view of a main body of a sheet metal part multi-clamp tool for improving efficiency in an embodiment of the application;

FIG. 2 is a schematic view of an embodiment of the present application for showing the surrounding structure of the clamping drive;

FIG. 3 is a schematic view of an embodiment of the present application for showing the internal structure of a support rod;

FIG. 4 is a schematic view for showing the bottom structure of the clamping plate in the embodiment of the present application;

FIG. 5 is a schematic diagram of the structure at A in FIG. 4;

FIG. 6 is a schematic view of a top structure for a clamping plate in an embodiment of the present application;

fig. 7 is a schematic structural diagram of a sheet metal part after being processed in the embodiment of the present application.

Description of reference numerals: 1. a frame; 11. a rotating tank; 111. a hole of abdication; 112. a support bearing; 2. a work table; 21. supporting a tube; 22. a rotation mechanism; 221. a turbine; 222. a worm; 223. rotating the driving member; 23. locking the assembly; 231. a rubber ring; 2311. a guide slope; 232. a lock lever; 2321. a abdication inclined plane; 2322. a holding block; 2323. a return spring; 3. clamping the driving member; 31. a fixed block; 311. a fixing hole; 32. a limiting hole; 33. a limiting block; 331. a magnetic device; 332. an adjustment switch; 4. a clamping plate; 41. mounting holes; 411. mounting grooves; 42. a fixing assembly; 421. clamping the rubber block; 4211. a clamping hole; 4212. a through groove; 4213. a guide surface; 422. positioning holes; 43. a limiting rod; 431. rotating the block; 4311. a drive slot; 432. abutting against the rubber ring; 5. fitting the vertical face; 51. anti-skid rubber pad.

Detailed Description

The present application is described in further detail below with reference to figures 1-6.

The embodiment of the application discloses many anchor clamps of sheet metal component frock of raising efficiency. Referring to fig. 1, the sheet metal part multi-clamp tool capable of improving efficiency comprises a rack 1 and a workbench 2 installed on the rack 1, wherein a rotary groove 11 for embedding the workbench 2 is formed in the rack 1, and the rotary groove 11 is a circular blind hole so that the workbench 2 can rotate in the rotary groove 11.

Referring to fig. 2, a concession hole 111 is formed in the center of the bottom of the rotary groove 11 of the frame 1, a support tube 21 is welded and fixed to the center of the workbench 2, and the support tube 21 is a cylindrical hollow metal tube with two open ends. The support bearing 112 is welded and fixed in the abdicating hole 111, the outer ring of the support bearing 112 is welded and fixed on the inner wall of the abdicating hole 111, and the support tube 21 is inserted and welded and fixed in the inner ring of the support bearing 112, so as to realize the free rotation of the workbench 2 relative to the frame 1.

Referring to fig. 2, a rotating mechanism 22 for driving the support tube 21 to rotate is mounted on the outer side wall of the support tube 21, the rotating mechanism 22 includes a worm wheel 221 welded on the outer side wall of the support tube 21, a worm 222 engaged with the rotating gear, and a rotating driver 223 mounted on one end of the worm 222 through a coupling, the rotating driver 223 is fixed on the frame 1 through a support, an output shaft of the rotating driver 223 is fixed on the end of the worm 222 through the coupling, and the rotating driver 223 can be a stepping motor for driving the worm 222 to rotate so as to drive the workbench 2 to rotate.

Referring to fig. 2, the clamping driving member 3 is inserted into the supporting tube 21, and the clamping driving member 3 may be an oil cylinder, an electric push rod, or an electric cylinder as long as it can provide a retraction force in a linear direction, and the clamping driving member 3 is preferably an electric cylinder in the embodiment of the present application.

Referring to fig. 2 and 3, the outer side wall of the support tube 21 is provided with a locking assembly 23 for fixing the clamping driving member 3 in the support tube 21, the locking assembly 23 comprises a rubber ring 231 adhesively fixed in the support tube 21 and a locking rod 232 slidably connected to the top of the rubber ring 231, the rubber ring 231 is provided with a guiding inclined surface 2311 inclined from top to bottom so that the opening of the rubber ring 231 is uniformly decreased from top to bottom, and the clamping driving member 3 presses the rubber ring 231 when being forcibly inserted into the support tube 21 so as to be clamped and fixed in the support tube 21.

Referring to fig. 3, a fixing block 31 is fixed to the bottom of the clamping driving member 3 by welding, and a fixing hole 311 for inserting the locking rod 232 is formed in the fixing block 31. Three locking rods 232 are evenly installed along the circumferential direction of the support pipe 21, and thus three fixing holes 311 are evenly provided along the circumferential direction of the fixing block 31. The locking pole 232 tip is formed with the inclined plane 2321 that steps down that is convenient for carry out when locking fixed block 31 butt locking pole 232 through the cutting, and the inclined plane 2321 that steps down makes the locking pole 232 lateral wall diameter evenly decrement towards the one end endwall diameter that is close to fixed orifices 311 to step down for fixed block 31, be convenient for locking pole 232 to pass rubber ring 231 and insert in the fixed orifices 311.

Referring to fig. 3, a holding block 2322 is integrally formed at one end of the locking rod 232, which penetrates through the support tube 21, and a return spring 2323 is sleeved between the holding block 2322 and the outer side wall of the support tube 21 of the locking rod 232. Reset spring 2323 one end is inserted and is established and welded fastening in locking pole 232, and the other end welded fastening is on the lateral wall of stay tube 21 to for locking pole 232 inserts the elastic force that provides the resilience that resets in the fixed orifices 311, be convenient for locking pole 232 inserts automatically in the locking fixed orifices 311.

Referring to fig. 4 and 5, the output shaft of the clamping driving member 3 penetrates out of the center of the worktable 2, and the output shaft of the clamping driving member 3 is sleeved with a clamping plate 4. The clamping plate 4 is provided with a mounting hole 41 at the central position, and the mounting hole 41 is a circular through hole; mounting groove 411 that extends to mounting hole 41 is seted up to grip block 4 one side, and mounting groove 411 is the logical groove that link up along grip block 4 thickness, and mounting hole 41 and mounting groove 411 all with the output shaft clearance fit of centre gripping driving piece 3. The clamping plate 4 is sleeved on the output shaft of the clamping driving member 3 from the mounting groove 411 so that the output shaft of the clamping driving member 3 is located at the center of the mounting hole 41.

Referring to fig. 4 and 5, a fixing assembly 42 for fixing the clamping plate 4 to the output shaft of the clamping driving member 3 is arranged in the mounting hole 41, and the fixing assembly 42 includes a clamping rubber block 421 adhered and fixed to the inner wall of the mounting hole 41. The thickness of centre gripping rubber block 421 is the same with the thickness of grip block 4, and centre gripping rubber block 421 center is seted up with the output shaft interference fit's of centre gripping driving piece 3 centre gripping hole 4211, and centre gripping rubber block 421 presss from both sides tightly on the lateral wall of the output shaft of centre gripping driving piece 3 in order to fix grip block 4 on the output shaft of centre gripping driving piece 3.

Referring to fig. 4 and 5, the clamping rubber block 421 is provided with a through groove 4212 communicated with the mounting groove 411, and the clamping rubber block 421 is provided with a guide surface 4213 inclined toward the center of the through groove 4212; the width of the mounting groove 411 and the diameter of the mounting hole 41 are both larger than the diameter of the output shaft of the clamping driving member 3, the width of the through groove 4212 and the diameter of the clamping hole 4211 are both smaller than the diameter of the output shaft of the clamping driving member 3, and the guide surface 4213 guides the output shaft of the clamping driving member 3 into the through groove 4212 and clamps the output shaft of the clamping driving member 3 into the clamping hole 4211 so that the clamping plate 4 can be fixed on the output shaft of the clamping driving member 3.

Referring to fig. 5, a positioning hole 422 is formed in one side of the clamping plate 4, which is located on the inner wall of the mounting hole 41 and away from the mounting groove 411, a limiting hole 32 is formed in the side wall of the output shaft of the clamping driving member 3, and the limiting hole 32 penetrates through the output shaft of the clamping driving member 3 in the radial direction. The positioning hole 422 is internally threaded with a limiting rod 43 inserted in the limiting hole 32, and the limiting rod 43 further fixes the clamping plate 4 on the output shaft of the clamping driving member 3.

Referring to fig. 5, a rotating block 431 is integrally formed at one end of the limiting rod 43, a driving groove 4311 is formed on a surface of the rotating block 431, which is away from the limiting rod 43, and an end surface of the driving groove 4311 may be a polygon, such as a regular hexagon. One end of the limiting rod 43, which is far away from the rotating block 431, is threaded to form a thread which is in threaded connection with the positioning hole 422, the limiting rod 43 is sleeved with an abutting rubber ring 432, and the abutting rubber ring 432 is positioned between the rotating block 431 and the outer side wall of the output shaft of the clamping driving piece 3, so that the clamping plate 4 is reinforced.

Referring to fig. 4 and 6, the side wall of the clamping plate 4 is cut to form a plurality of attaching vertical faces 5 for attaching sheet metal parts; the attaching vertical faces 5 are uniformly distributed on the side wall of the clamping plate 4, preferably eight in the embodiment, so that the clamping plate 4 can clamp and fix eight sheet metal parts at the same time, and the number of the attaching vertical faces 5 is determined according to the size of the sheet metal parts. The clamping plate 4 may be of paramagnetic material, for example iron; the clamping plate 4 is fixedly adhered with an anti-skid rubber pad 51 at each joint vertical face 5, so as to clamp the sheet metal part. The output shaft tip welded fastening of centre gripping driving piece 3 has stopper 33, and centre gripping driving piece 3 contracts, and drive stopper 33 butt grip block 4 carries out the centre gripping fixedly in order to carry out the panel beating on the surface to workstation 2.

Referring to fig. 6, a magnetic device 331 attached to the clamping plate 4 is sleeved on the limiting block 33 and fixed in an adhering manner, the magnetic device 331 may be an electromagnet with a power supply, the magnetic device 331 is connected to an adjusting switch 332 for adjusting the magnetic force, the adjusting switch 332 may be a potentiometer, and the adjusting switch 332 adjusts the magnetic force of the magnetic device 331. The magnetic device 331 is attached to the clamping plate 4, and the clamping plate 4 is magnetized and then has magnetism, so that the sheet metal part attached to the attaching vertical surface 5 can be adsorbed and fixed.

The implementation principle of the sheet metal part multi-clamp tool for improving efficiency in the embodiment of the application is as follows:

when the sheet metal part is clamped and fixed, the clamping driving part 3 is driven to retract in advance, so that the distance between the clamping plate 4 and the workbench 2 is larger than the thickness of one sheet metal part and smaller than the thickness of two sheet metal parts. Then, the magnetic force of the magnetic device 331 is adjusted through the adjusting switch 332, and after the magnetic device 331 magnetizes the clamping plate 4, the clamping plate 4 is magnetic, so that the sheet metal part can be adsorbed.

Then adsorb the one side of waiting to process of sheet metal component on laminating facade 5 one by one, the perpendicular one side that waits to process the one side on the sheet metal component this moment is located 4 bottoms of grip block. After all sheet metal parts are adsorbed and fixed, the clamping driving piece 3 is driven to contract, so that the output shaft of the clamping driving piece 3 drives the limiting block 33 to move downwards, and the clamping plate 4 is driven to clamp and fix all sheet metal parts. After a sheet metal part is drilled or welded, the rotary driving piece 223 drives the worm 222 to rotate, and the worm 222 drives the worm wheel 221 to rotate so as to drive the workbench 2 to rotate by a preset angle, so that the next sheet metal part is machined. The frequent shutdown and startup caused by feeding are greatly reduced, and the efficiency of sheet metal part processing is improved.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a many anchor clamps of sheet metal component frock of raising efficiency, includes frame (1) and workstation (2) of setting on frame (1), its characterized in that: the clamping driving piece (3) is arranged at the bottom of the central position of the workbench (2), a limiting block (33) is arranged on an output shaft of the clamping driving piece (3), a clamping plate (4) is sleeved on the output shaft of the clamping driving piece (3), a plurality of attaching vertical faces (5) for attaching sheet metal parts are arranged on the side wall of the clamping plate (4), and the clamping driving piece (3) is used for driving the limiting block (33) to abut against the clamping plate (4) so as to clamp and fix the sheet metal parts on the surface of the workbench (2);

a mounting hole (41) is formed in the position, located at the bottom of the center, of the clamping plate (4), a mounting groove (411) extending to the mounting hole (41) is formed in one side of the clamping plate (4), and a fixing assembly (42) used for fixing the clamping plate (4) on an output shaft of the clamping driving piece (3) is arranged in the mounting hole (41);

the fixing assembly (42) comprises a clamping rubber block (421) arranged on the inner wall of the mounting hole (41), the clamping rubber block (421) is provided with a through groove (4212) communicated with the mounting groove (411), the clamping rubber block (421) is provided with a guide surface (4213) inclined towards the center of the through groove (4212), and the center of the clamping rubber block (421) is provided with a clamping hole (4211) communicated with the through groove (4212) and in interference fit with an output shaft of the clamping driving piece (3);

the limiting block (33) is sleeved with a magnetic device (331) attached to the clamping plate (4), the magnetic device (331) is used for magnetizing the clamping plate (4) to enable the clamping plate (4) to have magnetism attracted with the magnetism of the sheet metal part, and the magnetic device (331) is connected with an adjusting switch (332) for adjusting the magnetic force;

the clamping device is characterized in that a rotating groove (11) for embedding the workbench (2) is formed in the rack (1), a yielding hole (111) for inserting the clamping driving piece (3) is formed in the center of the bottom of the rotating groove (11) of the rack (1), a supporting pipe (21) for inserting the clamping driving piece (3) is formed in the center of the workbench (2), a rotating mechanism (22) for driving the supporting pipe (21) to rotate is arranged on the outer side wall of the supporting pipe (21), and a locking component (23) for fixing the clamping driving piece (3) in the supporting pipe (21) is arranged on the outer side wall of the supporting pipe (21);

the rotating mechanism (22) comprises a worm wheel (221) arranged on the outer side wall of the support pipe (21), a worm (222) meshed with the rotating gear, and a rotating driving piece (223) arranged at one end of the worm (222), wherein the rotating driving piece (223) is used for driving the worm (222) to rotate.

2. The sheet metal part multi-clamp tool for improving the efficiency according to claim 1, is characterized in that: the locking assembly (23) comprises a rubber ring (231) arranged in the supporting pipe (21) and a locking rod (232) connected to the top of the rubber ring (231) in a sliding mode, a fixing block (31) is arranged at the bottom of the clamping driving piece (3), and a fixing hole (311) for the locking rod (232) to be inserted is formed in the fixing block (31).

3. The sheet metal part multi-clamp tool for improving the efficiency according to claim 2, is characterized in that: rubber ring (231) is provided with direction inclined plane (2311) that top-down inclined, locking pole (232) tip is provided with the inclined plane of stepping down (2321) that is convenient for stepping down when locking fixed block (31) butt locking pole (232), the one end that stay tube (21) were worn out in locking pole (232) is provided with reset spring (2323), reset spring (2323) one end sets up on locking pole (232), and the other end setting provides the elastic force who resets in inserting fixed orifices (311) for locking pole (232) on the lateral wall of stay tube (21).

4. The sheet metal part multi-clamp tool for improving the efficiency according to claim 1, is characterized in that: the output shaft of centre gripping driving piece (3) is located stopper (33) bottom and is provided with spacing hole (32), grip block (4) are located one side that mounting hole (41) inner wall kept away from mounting groove (411) and are provided with spacing hole (422) that communicate with each other with spacing hole (32), be provided with gag lever post (43) of inserting in spacing hole (32) in locating hole (422).

5. The sheet metal part multi-clamp tool capable of improving efficiency according to claim 4, is characterized in that: limiting rod (43) one end is provided with turning block (431), the one end that limiting rod (43) kept away from turning block (431) is provided with the screw thread with locating hole (422) threaded connection, the cover is equipped with butt rubber circle (432) on limiting rod (43).