CN111716267B

CN111716267B - Workpiece clamp with synchronous clamping structure for machining production

Info

Publication number: CN111716267B
Application number: CN202010634921.9A
Authority: CN
Inventors: 段福强
Original assignee: Changde Rongsheng Machinery Manufacturing Co ltd
Current assignee: Changde Rongsheng Machinery Manufacturing Co.,Ltd.
Priority date: 2020-07-03
Filing date: 2020-07-03
Publication date: 2021-05-04
Anticipated expiration: 2040-07-03
Also published as: CN111716267A

Abstract

The invention relates to the technical field of workpiece fixtures, in particular to a workpiece fixture with a synchronous clamping structure for machining production, which comprises a fixed base, wherein a clamping mechanism is arranged at the top end of the fixed base, the clamping mechanism comprises a first fixed baffle, the front side and the rear side of the top end of the fixed base are both fixedly provided with the first fixed baffle, insertion pins are inserted into the left side and the right side of the two groups of first fixed baffles, the front end and the rear end of each insertion pin respectively penetrate through the two groups of insertion pins and respectively extend to the outer parts of the insertion pins, the left end of the clamping mechanism is provided with a transmission mechanism, and a feeding mechanism is arranged above the clamping mechanism. The clamp provided by the invention is provided with the synchronous clamping mechanism, when a workpiece is clamped, the workpiece can be clamped at two sides of the clamp simultaneously, the clamping can be finished without pushing the workpiece, the workpiece is automatically conveyed between the clamps before the workpiece is rotationally clamped, the workpiece is not required to be manually taken and kept at the clamping position of the clamp, and the clamping position is prevented from deviating.

Description

Workpiece clamp with synchronous clamping structure for machining production

Technical Field

The invention relates to the technical field of workpiece clamps, in particular to a workpiece clamp with a synchronous clamping structure for machining production.

Background

The workpiece is machined by a machine in general factories, so that the workpiece meets the requirements of people, and the workpiece is machined by clamping the workpiece by using a clamp, so that the machining is convenient, for example, the workpiece clamp of the granted Chinese invention patent with the publication number of CN103170847B is provided with a base, the base is provided with a reference seat plate and a sliding clamping plate which is arranged on the sliding clamping seat and is opposite to the reference surface of the reference seat plate, the sliding clamping seat is in sliding connection with the base, the side edge of the sliding clamping seat is provided with a positioning bolt, the positioning bolt is tightly attached to the side edge of the base in a screwed state, the side edge of the reference seat plate is provided with a limiting plate, the part of the limiting plate extends towards the direction of the sliding clamping seat, the surface of the limiting plate, which is close to the reference seat plate, is vertical to the reference surface of the reference seat plate, so that the workpiece has the advantages, for another example, a multifunctional workpiece clamp of the granted Chinese invention patent with publication number CN108177008A is provided with a base, a chute, a movable clamping plate, a fixed clamping plate, a transmission device, a controller, a cylinder, a gasket, a mechanical arm and a mechanical arm; the upper end of the base is provided with a chute; a movable clamping plate is arranged at the left end inside the sliding groove; a fixed clamping plate is arranged at the right end of the base; the fixed clamping plate and the movable clamping plate are both provided with an air cylinder, and the two air cylinders are corresponding in position; a gasket is arranged at the front ends of the two cylinders; a transmission device is arranged at the right end of the fixed sliding plate; the bottom of deciding splint sets up the control appearance, and is connected between control appearance and the transmission electricity, sets up the arm in the upper end of deciding splint, sets up the manipulator at the left end of arm, manipulator, move and all be connected through mechanical transmission between splint and the cylinder, brought simple structure, reasonable in design, can process multiple different kind's work piece through this device, improved the application scope of whole anchor clamps, save the resource, consequently can know present work piece holder and satisfy people's demand basically, but still have some problems.

The existing clamp generally clamps a workpiece in a one-way pushing and clamping mode, when the workpiece is clamped, the clamp may push the workpiece to move on the clamp, so that friction occurs between the bottom end of the workpiece and the clamp, and the workpiece is damaged.

Disclosure of Invention

The invention aims to provide a workpiece clamp with a synchronous clamping structure for machining production, which aims to solve the problems that the conventional clamp provided in the background art is not provided with a workpiece conveying mechanism generally, and people need to manually take up a workpiece and keep the workpiece at a clamping position of the clamp for clamping.

In order to achieve the purpose, the invention provides the following technical scheme: a workpiece clamp with a synchronous clamping structure for machining production comprises a fixed base, wherein a clamping mechanism is arranged on the top end of the fixed base and comprises a first fixed baffle, insertion pins, nuts, movable clamping plates, a first rotating ring, a first threaded rod, a second threaded rod, a handle and a first fixed block, the first fixed baffle is fixed on the front side and the rear side of the top end of the fixed base, the insertion pins are inserted into the left side and the right side of the first fixed baffle, the front ends and the rear ends of the insertion pins penetrate through the two insertion pins respectively and extend to the outer portions of the insertion pins respectively, the nuts are in threaded connection with the left ends and the right ends of the insertion pins, the movable clamping plates are sleeved at the middle positions outside the insertion pins, the first rotating ring is inserted into the bottom ends of the movable clamping plates, and the first threaded rod and the second threaded rod are in the two first rotating rings respectively, the right-hand member first rotating ring threaded connection has first threaded rod, the left end first rotating ring threaded connection has the second threaded rod, first threaded rod and second threaded rod screw thread opposite direction, and first threaded rod and second threaded rod formula structure as an organic whole, the clamping mechanism left end is provided with drive mechanism, and the clamping mechanism top is provided with feeding mechanism, adopts this kind of design to be convenient for provide a synchronous clamping device for the work piece is convenient for press from both sides tightly.

Preferably, the transmission mechanism comprises a protective shell, a first fixing ring, a first catch, a second rotating ring, a second catch, a first gear, a second gear, a first fixing rod, a third gear, a second fixing rod and a second fixing baffle, wherein the left ends of the first fixing baffles are fixed with the second fixing baffle, the left end of the second threaded rod is fixed with the first fixing ring, the first fixing ring is externally fixed with the first catch, the first fixing ring is externally sleeved with the second rotating ring, the second catch is fixedly arranged in the second rotating ring, the first catch is matched with the second catch, the second rotating ring is externally fixed with the first gear, the first fixing rod is fixedly arranged on the lower side of the left end of the second fixing baffle, the left end of the first fixing rod is movably connected with the second gear through a bearing, the second gear is meshed with the first gear, the upper side of the left end of the second fixing baffle is fixedly provided with the second fixing rod, and the left end of the second fixed rod is movably connected with a third gear through a bearing, the third gear is meshed with the second gear, and the left end of the first gear is fixed with a protective shell.

Preferably, the feeding mechanism comprises a fixed clamping groove, a first clamping block, a third fixed baffle, a first connecting rod, a first connecting plate, a rack plate, a second clamping groove, a second clamping block, a second connecting plate and a rubber cushion, the middle position of the top end of the first fixed baffle at the rear end is fixedly provided with the fixed clamping groove, the first clamping block is clamped in the fixed clamping groove, the top end of the first clamping block is fixedly provided with the third fixed baffle, the rear side of the left end of the first clamping block is fixedly provided with the first connecting rod, the left side of the front end of the first connecting rod is fixedly provided with the first connecting plate, the bottom end of the first connecting plate is fixedly provided with the rack plate, the right end of the first connecting plate is provided with the second clamping groove, the inside of the second clamping groove is clamped with the second clamping block, the bottom end of the second clamping block is fixedly arranged at the top end of the second fixed baffle, the front side of the right end of the first connecting plate, by adopting the design, the automatic feeding of the workpiece is convenient to complete, and the workpiece does not need to be manually held.

Preferably, the handle is fixed at the right end of the first threaded rod and is designed in an L shape, and the first threaded rod is convenient to use and rotate due to the adoption of the design.

Preferably, unable adjustment base top right side is fixed with the second fixed block, and the second fixed block top is fixed with the solid fixed ring of second, first threaded rod right-hand member runs through the solid fixed ring of second and extends to the solid fixed ring outside of second, adopts this kind of design to increase the stability of device to be convenient for the rotation of first threaded rod and second threaded rod.

Preferably, the top ends of the two groups of movable clamping plates are close to one side and are designed in a sliding mode, the top ends of the two groups of first fixing blocks are close to one side and are respectively fixed with seven groups of first fixing blocks, and the clamping of the device is firmer by adopting the design.

Preferably, both ends of the left end of the fixed base are provided with slotted holes, the two groups of slotted holes are designed in a double-layer mode, overlooking section circumferences of the slotted holes on the upper layer are respectively larger than overlooking section circumferences of the slotted holes on the lower layer, and the design is adopted to conveniently fix and dismantle the whole device by adopting a hexagonal screw.

Preferably, the top end of the third fixed baffle is glued with a rubber cushion, the top end of the rubber cushion is glued with uniformly distributed cylindrical bumps, the main materials of the bumps are made of rubber, and the design is adopted, so that the workpiece is more stable when placed.

Preferably, the front end first fixed stop top is fixed with fourth fixed stop, and the height of fourth fixed stop is greater than second connecting plate bottom and arrives distance size between the first fixed stop top adopts this kind of design to be convenient for block first fixture block, avoids first fixture block motion position too much.

Compared with the prior art, the invention has the beneficial effects that:

the workpiece clamp with the synchronous clamping structure for machining production is provided with movable clamping plates, a rubber cushion, a handle, an insertion pin, a first threaded rod, a second threaded rod, a handle and a third gear, when a workpiece is required to be clamped, the workpiece can be placed above the rubber cushion, the handle is rotated clockwise, the first threaded rod and the second threaded rod can be driven to rotate together when the handle is rotated, the two groups of movable clamping plates can be driven to rotate around the two groups of insertion pins due to the fact that the thread directions of the first threaded rod and the second threaded rod are opposite, the top ends of the two groups of movable clamping plates are close to each other, the third gear can be driven to rotate together when the handle is rotated, the first connecting plate is driven to move forwards, the rubber cushion can be driven to move forwards when the first connecting plate moves forwards, the workpiece can be driven to move forwards, and when the two groups of movable clamping plates, the handle can be stopped to rotate, the workpiece can be clamped, the clamp is prevented from clamping the workpiece in a one-way pushing and clamping mode by adopting the design, when the workpiece is clamped, the clamp can push the workpiece to move on the clamp, so that friction is generated between the bottom end of the workpiece and the clamp, and the workpiece is damaged, the existing clamp is not provided with a workpiece conveying mechanism, the workpiece needs to be manually taken up by people and is kept at the clamping position of the clamp, the clamping is carried out, the position of the workpiece is easy to shift in the clamping process, so that the clamping position of the workpiece is not horizontal, the subsequent production is influenced, the clamp is provided with a synchronous clamping mechanism, when the workpiece is clamped, the workpiece can be simultaneously clamped by two sides of the clamp, the clamping can be finished without pushing the workpiece, and the workpiece is automatically conveyed to the clamp before the workpiece is rotated and clamped, need not the manual clamping position who takes and keep at anchor clamps, prevent that the tight position of clamp from taking place the skew, increased the practicality and the convenience of device.

Drawings

FIG. 1 is a schematic diagram of a rear left side top perspective view of the present invention;

FIG. 2 is a schematic diagram of a left side top perspective view of the present invention;

FIG. 3 is a schematic perspective view of the first fixed barrier and the protective housing of FIG. 1 in a hidden state according to the present invention;

FIG. 4 is a schematic cross-sectional view of the structure of the present invention from the back;

FIG. 5 is a schematic bottom perspective view of the present invention;

FIG. 6 is a schematic bottom perspective view of the present invention;

fig. 7 is an enlarged view of the structure at a in fig. 6 according to the present invention.

In the figure: 1. a fixed base; 2. a clamping mechanism; 21. a first fixed baffle; 22. inserting a pin; 23. a nut; 24. a movable splint; 25. a first rotating ring; 26. a first threaded rod; 27. a second threaded rod; 28. a handle; 29. a first fixed block; 3. a transmission mechanism; 31. a protective housing; 32. a first retaining ring; 33. a first baffle plate; 34. a second rotating ring; 35. a second baffle plate; 36. a first gear; 37. a second gear; 38. a first fixing lever; 39. a third gear; 310. a second fixing bar; 311. a second fixed baffle; 4. a feeding mechanism; 41. fixing the clamping groove; 42. a first clamping block; 43. a third fixed baffle; 44. a first connecting rod; 45. a first connecting plate; 46. a rack plate; 47. a second card slot; 48. a second fixture block; 49. a second connecting plate; 410. a rubber cushion; 411. a fourth fixed baffle; 5. a slot; 6. a second fixed block; 7. a second retaining ring.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-7, an embodiment of the present invention is shown: a workpiece clamp with a synchronous clamping structure for machining production comprises a fixed base 1, a clamping mechanism 2 is arranged at the top end of the fixed base 1, the clamping mechanism 2 comprises a first fixed baffle 21, inserting pins 22, nuts 23, movable clamping plates 24, a first rotating ring 25, a first threaded rod 26, a second threaded rod 27, a handle 28 and a first fixed block 29, the first fixed baffle 21 is fixed on the front side and the rear side of the top end of the fixed base 1, the inserting pins 22 are inserted on the left side and the right side of the two groups of first fixed baffle 21, the front end and the rear end of the two groups of inserting pins 22 respectively penetrate through the two groups of inserting pins 22 and respectively extend to the outside of the inserting pins 22, the nuts 23 are connected on the left end and the right end of the two groups of inserting pins 22 by threads, the movable clamping plates 24 are sleeved on the middle positions outside the two groups of inserting pins 22, the first rotating ring 25 is inserted at the bottom ends of the two groups of the movable clamping plates 24, the first, the first rotating ring 25 threaded connection of right-hand member has first threaded rod 26, the first rotating ring 25 threaded connection of left end has second threaded rod 27, first threaded rod 26 is opposite with second threaded rod 27 screw thread direction, and first threaded rod 26 and second threaded rod 27 formula structure as an organic whole, 2 left ends of clamping mechanism are provided with drive mechanism 3, and 2 tops of clamping mechanism are provided with feeding mechanism 4, adopt this kind of design to avoid one-way centre gripping to the work piece, make to take place the friction between work piece bottom and the anchor clamps, adopt synchronous clamping mechanism 2, make the centre gripping more swift convenient.

As shown in fig. 1, fig. 3, fig. 4, fig. 6 and fig. 7, the transmission mechanism 3 includes a protective housing 31, a first fixing ring 32, a first blocking plate 33, a second rotating ring 34, a second blocking plate 35, a first gear 36, a second gear 37, a first fixing rod 38, a third gear 39, a second fixing rod 310 and a second fixing blocking plate 311, wherein the left ends of two sets of first fixing blocking plates 21 are fixed with the second fixing blocking plate 311, the left end of the second threaded rod 27 is fixed with the first fixing ring 32, the first fixing ring 32 is fixed with the first blocking plate 33 outside, the second fixing ring 32 is sleeved with the second rotating ring 34 outside, the second rotating ring 34 is fixed with the second blocking plate 35 inside, the first blocking plate 33 is matched with the second blocking plate 35, the second rotating ring 34 is fixed with the first gear 36 outside, the first fixing rod 38 is fixed on the lower side of the left end of the second fixing blocking plate 311, the left end of the first fixing rod 38 is movably connected with the second gear 37 through a bearing, and second gear 37 and first gear 36 intermeshing, second fixed stop 311 left end upside is fixed with second dead lever 310, and second dead lever 310 left end has third gear 39 through bearing swing joint, third gear 39 and second gear 37 intermeshing, adopt this kind of design to be convenient for faster rotation third gear 39, make the motion of third gear 39 more swift, be convenient for the follow-up operation of device, and first gear 36 left end is fixed with protecting sheathing 31, adopt this kind of design to be convenient for increase the wholeness of device, and increase the holistic linkage of device, it is more convenient to operate, the device is more convenient when using.

As shown in fig. 1, fig. 2, fig. 3, fig. 4 and fig. 5, the feeding mechanism 4 includes a fixed slot 41, a first fastening block 42, a third fixed baffle 43, a first connecting rod 44, a first connecting plate 45, a rack plate 46, a second slot 47, a second fastening block 48, a second connecting plate 49 and a rubber cushion 410, the fixed slot 41 is fixed at the middle position of the top end of the rear first fixed baffle 21, the first fastening block 42 is clamped inside the fixed slot 41, the third fixed baffle 43 is fixed at the top end of the first fastening block 42, the first connecting rod 44 is fixed at the rear side of the left end of the first fastening block 42, the first connecting plate 45 is fixed at the left side of the front end of the first connecting rod 44, the rack plate 46 is fixed at the bottom end of the first connecting plate 45, the second slot 47 is formed at the right end of the first connecting plate 45, the second fastening block 48 is clamped inside the second slot 47, the bottom end of the second fastening block 48 is fixed at, and the front side of the right end of the first connecting plate 45 is fixed with a second connecting plate 49, and the other end of the second connecting plate 49 is fixed at the front end of the third fixed baffle 43.

The handle 28 is fixed with to first threaded rod 26 right-hand member, and the handle 28 is the design of letter "L" shape, adopts this kind of design to do benefit to more and rotates first threaded rod 26 for convenient and fast when first threaded rod 26 rotates does benefit to operator's use.

Fixed baseplate 1 top right side is fixed with second

fixed block

6, and 6 tops of second fixed block are fixed with the solid fixed ring 7 of second, and the solid fixed ring 7 of second is run through to first threaded rod 26 right-hand member and extends to the solid fixed ring 7 outside of second, adopts the stability that this kind of design is convenient for increase first threaded rod 26 and second threaded rod 27, does benefit to turning handle 28 more to be convenient for operate.

The top ends of the two groups of movable clamping plates 24 are close to one side and are designed in a sliding mode, the top ends of the two groups of movable clamping plates 24 are close to one side and are respectively fixed with seven groups of first fixing blocks 29, the two groups of movable clamping plates 24 are convenient to fit with a workpiece through the design, and the stability of the device for clamping the workpiece is improved.

The two ends of the left end of the fixed base 1 are both provided with slotted holes 5, and the two groups of slotted holes 5 are both designed in a double-layer mode, and the overlooking section perimeter of the upper slotted hole 5 is respectively larger than the overlooking section perimeter of the lower slotted hole 5.

The rubber cushion 410 is glued to the top end of the third fixed baffle 43, the cylindrical bumps which are evenly distributed are glued to the top end of the rubber cushion 410, and the main materials of the bumps are made of rubber.

The top end of the first fixed baffle plate 21 at the front end is fixed with a fourth fixed baffle plate 411, the height of the fourth fixed baffle plate 411 is larger than the distance between the bottom end of the second connecting plate 49 and the top end of the first fixed baffle plate 21, the third fixed baffle plate 43 is prevented from moving too much by adopting the design, and the workpiece position is deviated in the middle of the fixture.

The working principle is as follows: when a workpiece needs to be clamped, the fixed base 1 can be fixed at a proper position, the workpiece is placed at the middle position of the front side of the top end of the rubber cushion 410, the handle 28 is rotated clockwise, when the handle 28 is rotated clockwise, the first threaded rod 26 and the second threaded rod 27 are driven to rotate clockwise simultaneously, when the first threaded rod 26 and the second threaded rod 27 rotate simultaneously, two groups of first rotating rings 25 are driven to be away from each other due to the fact that the first threaded rod 26 and the second threaded rod 27 are opposite in thread direction, when two groups of first rotating rings 25 are far away from each other, two groups of first rotating rings 25 are inserted into the bottom ends of two groups of movable clamping plates 24 respectively, the bottom ends of the two groups of movable clamping plates 24 are driven to be away from each other, when the bottom ends of the two groups of movable clamping plates 24 are far away from each other, the two groups of movable clamping plates 24 are driven to rotate around, when the second threaded rod 27 rotates clockwise, the first fixing ring 32 is driven to rotate clockwise, when the first fixing ring 32 rotates clockwise, the second rotating ring 34 is driven to rotate clockwise, when the second rotating ring 34 rotates clockwise, the second gear 37 is driven to rotate counterclockwise, and when the second gear 37 rotates counterclockwise, the third gear 39 is driven to rotate clockwise. When the third gear 39 rotates clockwise, the rack plate 46 is driven to move forward, when the rack plate 46 moves forward, the first connecting rod 44 is driven to move forward, when the first connecting rod 44 moves forward, the first clamping block 42 is driven to move forward, when the first clamping block 42 moves forward, the third fixed baffle 43 is driven to move forward, when the third fixed baffle 43 moves forward, the rubber cushion 410 is driven to move forward, so that the workpiece can be driven to move forward, when the workpiece moves to the middle of the two sets of movable clamping plates 24, the first clamping block 42 abuts against the fourth fixed baffle 411 with the front end, so that the first blocking piece 33 and the second blocking piece 35 rotate, so that the first fixed ring 32 and the second rotating ring 34 rotate relatively, the handle 28 continues to rotate clockwise, so that the inner sides of the top ends of the two sets of movable clamping plates 24 are tightly attached to the workpiece, and the handle 28 stops rotating, the fixing of the workpiece is completed, when the workpiece needs to be removed, the handle 28 is only required to be rotated anticlockwise, so that the top ends of the two groups of movable clamping plates 24 are far away from each other, and meanwhile, after the workpiece is loosened, the first fixing ring 32 can continue to drive the first gear 36 to rotate, so that the rubber cushion 410 moves backwards, and the workpiece is taken out.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. The utility model provides a workpiece clamp for machining production with synchronous clamping structure, includes unable adjustment base (1), its characterized in that: the fixing base is characterized in that a clamping mechanism (2) is arranged at the top end of the fixing base (1), the clamping mechanism (2) comprises a first fixing baffle (21), an inserting pin (22), a nut (23), a movable clamping plate (24), a first rotating ring (25), a first threaded rod (26), a second threaded rod (27), a handle (28) and a first fixing block (29), the first fixing baffle (21) is fixed on the front side and the rear side of the top end of the fixing base (1), the inserting pin (22) is inserted on the left side and the right side of the first fixing baffle (21), the front end and the rear end of the inserting pin (22) respectively penetrate through the two inserting pins (22) and respectively extend to the outside of the inserting pin (22), the left end and the right end of the inserting pin (22) are respectively connected with the nut (23) in a threaded manner, and the movable clamping plate (24) is sleeved on the middle position, the bottom ends of the two groups of movable clamping plates (24) are respectively inserted with a first rotating ring (25), the two groups of first rotating rings (25) are respectively internally threaded with a first threaded rod (26) and a second threaded rod (27), the right end of each first rotating ring (25) is in threaded connection with the first threaded rod (26), the left end of each first rotating ring (25) is in threaded connection with the second threaded rod (27), the first threaded rod (26) and the second threaded rod (27) are in opposite threaded directions, the first threaded rod (26) and the second threaded rod (27) are of an integrated structure, the left end of the clamping mechanism (2) is provided with a transmission mechanism (3), and a feeding mechanism (4) is arranged above the clamping mechanism (2);

the transmission mechanism (3) comprises a protective shell (31), a first fixing ring (32), a first blocking piece (33), a second rotating ring (34), a second blocking piece (35), a first gear (36), a second gear (37), a first fixing rod (38), a third gear (39), a second fixing rod (310) and a second fixing baffle (311), wherein the left ends of the first fixing baffles (21) are fixed with the second fixing baffle (311), the left end of the second threaded rod (27) is fixed with the first fixing ring (32), the outer part of the first fixing ring (32) is fixed with the first blocking piece (33), the outer part of the first fixing ring (32) is sleeved with the second rotating ring (34), the inner part of the second rotating ring (34) is fixed with the second blocking piece (35), the first blocking piece (33) and the second blocking piece (35) are mutually matched in a staggered manner, the outer part of the second rotating ring (34) is fixed with the first gear (36), and second fixed stop (311) left end downside is fixed with first dead lever (38), first dead lever (38) left end has second gear (37) through bearing swing joint, and second gear (37) and first gear (36) intermeshing, second fixed stop (311) left end upside is fixed with second dead lever (310), and second dead lever (310) left end has third gear (39) through bearing swing joint, third gear (39) and second gear (37) intermeshing, and first gear (36) left end is fixed with protecting sheathing (31).

2. The workpiece clamp with the synchronous clamping structure for machining production of claim 1, wherein: the feeding mechanism (4) comprises a fixed clamping groove (41), a first clamping block (42), a third fixed baffle (43), a first connecting rod (44), a first connecting plate (45), a rack plate (46), a second clamping groove (47), a second clamping block (48), a second connecting plate (49) and a rubber cushion (410), the middle position of the top end of the first fixed baffle (21) is fixed with the fixed clamping groove (41), the first clamping block (42) is clamped inside the fixed clamping groove (41), the top end of the first clamping block (42) is fixed with the third fixed baffle (43), the rear side of the left end of the first clamping block (42) is fixed with the first connecting rod (44), the left side of the front end of the first connecting rod (44) is fixed with the first connecting plate (45), the bottom end of the first connecting plate (45) is fixed with the rack plate (46), the right end of the first connecting plate (45) is provided with the second clamping groove (47), and a second clamping block (48) is clamped in the second clamping groove (47), the bottom end of the second clamping block (48) is fixed at the top end of a second fixed baffle (311), a second connecting plate (49) is fixed on the front side of the right end of the first connecting plate (45), and the other end of the second connecting plate (49) is fixed at the front end of a third fixed baffle (43).

3. The workpiece clamp with the synchronous clamping structure for machining production of claim 1, wherein: a handle (28) is fixed at the right end of the first threaded rod (26), and the handle (28) is designed in an L shape.

4. The workpiece clamp with the synchronous clamping structure for machining production of claim 1, wherein: unable adjustment base (1) top right side is fixed with second fixed block (6), and second fixed block (6) top is fixed with the solid fixed ring of second (7), first threaded rod (26) right-hand member runs through the solid fixed ring of second (7) and extends to the solid fixed ring of second (7) outside.

5. The workpiece clamp with the synchronous clamping structure for machining production of claim 1, wherein: the side, close to each other, of the top ends of the two groups of movable clamping plates (24) is designed in a landslide mode, and the side, close to each other, of the top ends of the two groups of movable clamping plates (24) is respectively fixed with seven groups of first fixing blocks (29).

6. The workpiece clamp with the synchronous clamping structure for machining production of claim 1, wherein: slotted holes (5) are formed in the two ends of the left end of the fixed base (1), the two groups of slotted holes (5) are designed in a double-layer mode, and overlooking section circumferences of the slotted holes (5) on the upper layer are respectively larger than overlooking section circumferences of the slotted holes (5) on the lower layer.

7. The workpiece clamp with the synchronous clamping structure for machining production according to claim 2, wherein: the top end of the third fixed baffle (43) is glued with a rubber cushion (410), the top end of the rubber cushion (410) is glued with evenly distributed cylindrical bumps, and the bumps are mainly made of rubber.

8. The workpiece clamp with the synchronous clamping structure for machining production of claim 1, wherein: the front end first fixed stop (21) top is fixed with fourth fixed stop (411), and the height of fourth fixed stop (411) is greater than the second connecting plate (49) bottom and to the distance size between first fixed stop (21) top.