Clamping mechanism for machining round hole

Abstract

The utility model relates to a clamping mechanism for machining a round hole, and belongs to the technical field of workpiece machining auxiliary devices, the clamping mechanism comprises a punching clamping assembly and a polishing clamping assembly, the punching clamping assembly and the polishing clamping assembly each comprise a bottom plate and an abutting piece, and the abutting pieces are arranged at one end of the upper side of the bottom plate and are of the same structure; the punching clamping assembly comprises a first limiting plate arranged at the end, away from the abutting piece, of the corresponding bottom plate, and the polishing clamping assembly comprises a second limiting plate arranged at the end, away from the abutting piece, of the corresponding bottom plate. The to-be-punched position of the workpiece is aligned with the punching head, and when the workpiece is clamped between the second limiting plate and the corresponding abutting piece, the second limiting plate and the corresponding abutting piece fix the workpiece. The method has the effect of reducing the adverse effect on the machining accuracy of the workpiece.

Description

Technical Field

[0001] The present application relates to the technical field of workpiece machining auxiliary devices, and in particular to a clamping mechanism for machining round holes. Background Art

[0002] During the process of processing the workpiece, the staff usually places the workpiece on the workbench, and the workpiece is located under the punching head. At this time, the punching head is driven to move in the direction close to the workpiece to punch the workpiece, and the punched workpiece is turned over. At this time, the end of the workpiece away from the punching hole is located under the grinding device, which is convenient for grinding the other end of the workpiece.

[0003] Since the workpiece is usually of irregular shape, it is difficult to align the position of the workpiece to be processed with the processing device during the workpiece processing, which affects the accuracy of the workpiece processing. Utility Model Content

[0004] In order to reduce the adverse effects on the accuracy of workpiece machining, the present application provides a clamping mechanism for machining round holes.

[0005] The present application provides a clamping mechanism for machining a circular hole using the following technical solution:

[0006] A clamping mechanism for processing circular holes, including a punching clamping assembly and a grinding clamping assembly, each of which includes a base plate and a clamping member with the same structure and arranged at one end of the upper side of the base plate, the punching clamping assembly includes a first limit plate arranged at the corresponding end of the base plate away from the clamping member, and the grinding clamping assembly includes a second limit plate arranged at the corresponding end of the base plate away from the clamping member, when the workpiece is clamped between the first limit plate and the corresponding clamping member, the position of the workpiece to be punched is aligned with the punching head, and when the workpiece is clamped between the second limit plate and the corresponding clamping member, the second limit plate and the corresponding clamping member fix the workpiece.

[0007] By adopting the above technical solution, the workpiece is placed on the bottom plate of the punching clamping assembly. At this time, the first limit plate and the clamping member limit the workpiece, and the position of the workpiece to be punched is aligned with the punching head. When the punching of the workpiece is completed, the workpiece is turned over and placed on the bottom plate of the grinding clamping assembly. At this time, the second limit plate and the clamping member clamp and fix the workpiece again, thereby facilitating the grinding of the end of the workpiece away from the punching hole and reducing the adverse effect on the accuracy of the workpiece processing.

[0008] Optionally, one end of the first limiting plate is perpendicular to the bottom plate and fixedly connected to the bottom plate, one end of the first limiting plate away from the bottom plate is bent toward the corresponding clamping member, and the bent end of the first limiting plate is provided with a limiting groove adapted to the workpiece, the second limiting plate has the same structure as the first limiting plate, and one end of the second limiting plate with the limiting groove is close to the corresponding bottom plate and fixedly connected to the bottom plate, and one end of the second limiting plate is perpendicular to the bottom plate and away from the bottom plate.

[0009] By adopting the above technical solution, the workpiece is placed on the bottom plate of the punching clamping assembly, and the end of the workpiece to be punched is inserted into the limiting groove. At this time, the end of the workpiece to be punched is aligned with the punching head, and the clamping piece fixes the workpiece on the first limiting plate, thereby improving the accuracy of punching. After the punching is completed, the workpiece is turned over and placed on the bottom plate of the grinding clamping assembly, and the punched end of the workpiece is also clamped in the limiting groove. The clamping piece presses the workpiece against the second limiting plate. At this time, the end of the workpiece to be ground faces upward, which is convenient for grinding the end of the workpiece, thereby further reducing the adverse effect on the accuracy of workpiece processing.

[0010] Optionally, the clamping member includes a push rod parallel to the length direction of the base plate and facing the limiting groove, the push rod is slidably connected to the base plate, and a moving member for driving the push rod to move is provided at one end of the push rod away from the limiting groove.

[0011] By adopting the above technical solution, the moving part drives the push rod to move in the direction close to the workpiece until the workpiece is pressed against the first limit plate or the second limit plate. At this time, the end of the workpiece to be punched is clamped in the limit groove, thereby facilitating the fixation and positioning of the workpiece and reducing the adverse effects on the accuracy of workpiece processing.

[0012] Optionally, the movable part includes a hinged rod with one end hinged to the end of the push rod, a hinged seat is provided on the base plate, a driving rod is hinged on the upper side of the hinged seat, the upper end of the driving rod is bent at an obtuse angle toward the side away from the push rod, and the end of the hinged rod away from the push rod is hinged to the bending point of the driving rod.

[0013] By adopting the above technical solution, the end of the driving rod away from the mounting seat is driven to rotate along the hinge point with the hinge seat. At this time, the bending point of the driving rod rotates toward the direction close to the workpiece and pushes the hinge rod to move and rotate toward the direction close to the workpiece. At this time, the top rod hinged to the end of the hinge rod moves toward the direction close to the workpiece under the drive of the hinge rod until the workpiece is pressed tightly, which facilitates the positioning and processing of the workpiece and reduces the adverse effects on the accuracy of workpiece processing.

[0014] Optionally, a flipping assembly is provided between the punching clamping assembly and the grinding clamping assembly, and the flipping assembly includes a fixing member for clamping the workpiece, a first hydraulic cylinder is fixedly connected to the same side of the fixing member away from the workpiece, a mounting seat is provided at one end of the first hydraulic cylinder away from the fixing member, an end of the first hydraulic cylinder away from the fixing member is hinged to the mounting seat, and a rotating member for driving the first hydraulic cylinder to rotate is provided on the mounting seat.

[0015] By adopting the above technical solution, after the workpiece is punched, the driving rod rotates in the direction away from the workpiece, thereby driving the push rod to separate from the workpiece. At this time, the workpiece separates from the limiting groove, the first hydraulic cylinder extends and drives the fixing part to move in the direction close to the workpiece. When the fixing part moves to the workpiece, the fixing part clamps the workpiece. At this time, the first hydraulic cylinder contracts and drives the workpiece to separate from the bottom plate of the stamping clamping assembly through the fixing part. At this time, the moving part drives the first hydraulic cylinder to rotate in the direction close to the grinding clamping assembly until it faces the grinding clamping assembly. At this time, the telescopic rod of the first hydraulic cylinder extends and places the workpiece on the bottom plate of the grinding clamping assembly. At this time, the fixing part separates from the workpiece and moves the workpiece in the direction close to the second limiting plate. At this time, the driving clamping part clamps the workpiece, which is convenient for processing the workpiece and reduces the waste of human resources.

[0016] Optionally, the fixing part includes fixing plates located on both sides of the workpiece, both ends of the fixing plates are bent in directions approaching each other, the sides of the fixing plates away from each other are fixedly connected with sliding rods, a mounting frame is provided on the side of the fixing plate close to the mounting seat, the sliding rods are plugged into and slidably connected to the mounting frame, and a sliding part for driving the sliding rod to slide is provided on the mounting frame.

[0017] By adopting the above technical solution, the first hydraulic cylinder drives the mounting frame to drive the fixed plate to move in the direction close to the workpiece until the fixed plate is located on both sides of the workpiece. At this time, the sliding member drives the sliding rod to drive the fixed plate to move in the direction close to each other until the workpiece is clamped, thereby facilitating the movement of the workpiece to the bottom plate of the grinding and clamping assembly, facilitating the processing of the workpiece and reducing the waste of human resources.

[0018] Optionally, the sliding member includes a first moving rod respectively hinged on both sides of the mounting frame, the other end of the first moving rod is hinged to a second moving rod, the end of the second moving rod away from the first moving rod is hinged to the sliding rod, the first moving rod and the second moving rod are hinged at the hinge point with the same pushing rod, the pushing rod is rotatably connected to a screw rod, and the other end of the screw rod passes through the mounting frame and is threadedly connected to the mounting frame.

[0019] By adopting the above technical solution, the screw is rotated and the pushing rod is driven to move in the direction close to the workpiece. At this time, the hinge point of the first moving rod and the second moving rod moves in the direction close to the workpiece, and the end of the second moving rod close to the sliding rod drives the sliding rod to move in the direction close to each other until the fixed plate clamps the workpiece, thereby facilitating the movement of the workpiece and processing the workpiece, reducing the waste of human resources.

[0020] Optionally, the rotating member includes a motor fixedly connected to the mounting seat, and an output shaft of the motor passes through the mounting seat and is fixedly connected to an end of the first hydraulic cylinder away from the mounting frame.

[0021] By adopting the above technical solution, the motor rotates and drives the first hydraulic cylinder to drive the mounting frame to rotate. At this time, the workpiece rotates with the mounting frame until the workpiece moves to the bottom plate of the grinding clamping assembly, thereby facilitating the movement of the workpiece to the second limit plate, facilitating the grinding of the workpiece and reducing the waste of human resources.

[0022] In summary, the present application includes at least one of the following beneficial technical effects:

[0023] 1. Place the workpiece on the bottom plate of the punching clamping assembly. At this time, the first limit plate and the abutment member limit the workpiece, and the position of the workpiece to be punched is aligned with the punching head. When the workpiece is punched, turn the workpiece over and place it on the bottom plate of the grinding clamping assembly. At this time, the second limit plate and the abutment member abut and fix the workpiece again, so as to facilitate grinding the end of the workpiece away from the punching hole and reduce the adverse effect on the accuracy of workpiece processing;

[0024] 2. The end of the driving rod away from the mounting seat is driven to rotate along the hinge point with the hinge seat. At this time, the bending point of the driving rod rotates toward the direction close to the workpiece and pushes the hinge rod to move and rotate toward the direction close to the workpiece. At this time, the push rod hinged to the end of the hinge rod moves toward the direction close to the workpiece under the drive of the hinge rod until the workpiece is pressed tightly, so as to facilitate the positioning and processing of the workpiece and reduce the adverse effect on the accuracy of the workpiece processing;

[0025] 3. After the workpiece is punched, the driving rod rotates in the direction away from the workpiece, thereby driving the push rod to separate from the workpiece. At this time, the workpiece separates from the limiting groove, the first hydraulic cylinder extends and drives the fixing part to move in the direction close to the workpiece. When the fixing part moves to the workpiece, the fixing part clamps the workpiece. At this time, the first hydraulic cylinder contracts and drives the workpiece to separate from the bottom plate of the stamping clamping assembly through the fixing part. At this time, the moving part drives the first hydraulic cylinder to rotate in the direction close to the grinding clamping assembly until it faces the grinding clamping assembly. At this time, the telescopic rod of the first hydraulic cylinder extends and places the workpiece on the bottom plate of the grinding clamping assembly. At this time, the fixing part separates from the workpiece and moves the workpiece in the direction close to the second limiting plate. At this time, the driving clamping part clamps the workpiece, which is convenient for processing the workpiece and reduces the waste of human resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of the clamping mechanism for processing circular holes in Example 1 of the present application.

[0027] Figure 2 It is a structural schematic diagram of the positional relationship between the punching clamping assembly and the connecting plate in Example 2 of the present application.

[0028] Figure 3 It is a structural schematic diagram of the positional relationship between the grinding clamping assembly and the connecting plate in Example 2 of the present application.

[0029] Figure 4 It is a structural schematic diagram showing the positional relationship between the pushing component and the base plate in Example 2 of the present application.

[0030] Description of reference numerals: 1. workbench; 11. placement slot; 2. punching clamping assembly; 21. bottom plate; 211. sliding slot; 212. spring; 22. first limit plate; 221. limit slot; 222. receiving slot; 3. grinding clamping assembly; 31. second limit plate; 4. ejector rod; 41. moving part; 411. hinge seat; 412. fixing ring; 413. hinge rod; 414. driving rod; 415. handle; 5 , sliding plate; 51, sliding block; 6, connecting plate; 7, flip assembly; 71, mounting seat; 72, first hydraulic cylinder; 73, fixing member; 731, fixing plate; 732, sliding rod; 733, mounting frame; 74, sliding member; 741, first moving rod; 742, second moving rod; 743, pushing rod; 744, screw; 8, pushing assembly; 81, pushing block; 811, pushing groove; 82, second hydraulic cylinder. DETAILED DESCRIPTION

[0031] The present application is further described in detail below in conjunction with the accompanying drawings.

[0032] The embodiment of the present application discloses a clamping mechanism for machining a circular hole.

[0033] Example 1

[0034] Reference Figure 1 A clamping mechanism for processing round holes includes a punching clamping assembly 2 and a grinding clamping assembly 3 arranged on the upper side of a workbench 1. The punching clamping assembly 2 and the grinding clamping assembly 3 both include a horizontal bottom plate 21. A placement groove 11 adapted to the bottom plate 21 is opened on the workbench 1. The bottom plates 21 are inserted into the corresponding placement grooves 11 and the upper side of the bottom plates 21 is flush with the upper side wall of the workbench 1.

[0035] Reference Figure 1A vertical first limiting plate 22 is provided at one end of the upper side of the bottom plate 21 of the punching clamping assembly 2, a vertical second limiting plate 31 is provided at the upper side of the bottom plate 21 of the grinding clamping assembly 3 and close to the first limiting plate 22, and a clamping member for clamping the workpiece is provided at one end of the upper side of the bottom plate 21 and away from the first limiting plate 22.

[0036] One end of the first limiting plate 22 close to the corresponding bottom plate 21 is vertical and fixedly connected to the bottom plate 21, the upper end of the first limiting plate 22 is bent at a right angle toward the direction close to the abutting member, and a limiting groove 221 with an opening toward the abutting member is provided in the middle of the bent end of the first limiting plate 22, and the end of the workpiece to be punched is clamped in the limiting groove 221. The second limiting plate 31 has the same structure as the first limiting plate 22, and one end of the second limiting plate 31 with the limiting groove 221 is horizontal and fixedly connected to the corresponding bottom plate 21, and the other end of the second limiting plate 31 is located above the bottom plate 21 and is vertically arranged.

[0037] Place the workpiece on the bottom plate 21 of the punching clamping assembly, and insert the end of the workpiece to be punched into the limiting groove 221. At this time, the end of the workpiece to be punched is aligned with the punching head, and the clamping piece fixes the workpiece on the first limiting plate 22. When the punching of the workpiece is completed, turn the workpiece over and place it on the bottom plate 21 of the grinding clamping assembly 3. Similarly, clamp the punched end of the workpiece in the limiting groove 221. The clamping piece presses the workpiece against the second limiting plate 31. At this time, the end of the workpiece to be ground faces upward, which is convenient for grinding the end of the workpiece until the workpiece processing is completed.

[0038] Reference Figure 1 The pressing member includes a horizontal push rod 4 located at the end of the bottom plate 21 away from the first limit plate 22, the push rod 4 is parallel to the length direction of the bottom plate 21, and the end of the push rod 4 away from the workpiece is provided with a moving member 41 for driving the push rod 4 to move toward the workpiece. The moving member 41 includes a vertical hinge seat 411 fixedly connected to the end of the bottom plate 21 close to the push rod 4, a fixing ring 412 is fixedly connected to the upper side of the hinge seat 411 and the end close to the workpiece, and the end of the push rod 4 away from the workpiece passes through the fixing ring 412 and is slidably connected to the fixing ring 412.

[0039] Reference Figure 1 One end of the push rod 4 passing through the fixed ring 412 is hinged with a hinge rod 413, and the end on the upper side of the hinge seat 411 and away from the hinge ring is provided with a driving rod 414 whose one end is hinged to the hinge seat 411, and the upper end of the driving rod 414 is bent at an obtuse angle in the direction away from the workpiece, and the end of the hinge rod 413 away from the push rod 4 is hinged to the bending part of the driving rod 414, and the upper end of the driving rod 414 is fixedly connected with a handle 415.

[0040] The handle 415 drives the driving rod 414 to rotate along the hinge point with the hinge seat 411 away from one end of the mounting seat 71. At this time, the bending point of the driving rod 414 rotates toward the direction close to the workpiece, and pushes the hinge rod 413 to move and rotate toward the workpiece. At this time, the top rod 4 hinged to the end of the hinge rod 413 moves toward the direction close to the workpiece under the drive of the hinge rod 413 until the workpiece is pressed tightly, thereby facilitating the positioning and processing of the workpiece.

[0041] The implementation principle of Example 1 is: place the workpiece on the bottom plate 21 of the punching clamping assembly, and insert the end of the workpiece to be punched into the limiting groove 221. At this time, the end of the workpiece to be punched is aligned with the punching head, and the driving rod 414 is driven to rotate by the handle 415, so that the push rod 4 is driven by the hinge rod 413 to fix the workpiece on the first limiting plate 22. After the punching of the workpiece is completed, turn the workpiece over and place the workpiece on the bottom plate 21 of the grinding clamping assembly 3. Similarly, the punched end of the workpiece is clamped in the limiting groove 221, and the push rod 4 is driven to press the workpiece against the second limiting plate 31. At this time, the end of the workpiece to be ground faces upward, which is convenient for grinding the end of the workpiece until the workpiece processing is completed.

[0042] Example 2

[0043] Reference Figure 2 and Figure 3 The difference between this embodiment and the first embodiment is that a sliding plate 5 is fixedly connected to the lower side of the hinge seat 411, and a connecting plate 6 is fixedly connected to the side of the bottom plate 21 close to each other, and the bottom plate 21 and the connecting plate 6 are integrally formed. Two sliding grooves 211 arranged along the width direction of the bottom plate 21 are formed at one end of the bottom plate 21 away from the first limiting plate 22, and two sliding blocks 51 are fixedly connected to the lower side of the sliding plate 5, and the sliding blocks 51 are inserted into the corresponding sliding grooves 211 and are slidably connected to the bottom plate 21.

[0044] The sliding groove 211 is provided with a spring 212 arranged along the length direction of the sliding groove 211 and located on the side of the sliding plate 5 away from each other. One end of the spring 212 is fixedly connected to the bottom plate 21, and the other end is fixedly connected to the sliding plate 5. A turning component 7 for driving the workpiece to turn over is provided on the connecting plate 6. Figure 2 and Figure 4 A pushing component 8 is provided on the side of the first limiting plate 22 close to the workpiece to push the workpiece to move toward the hinge seat 411.

[0045] Reference Figure 2 and Figure 3The flip assembly 7 includes a vertical mounting seat 71 fixedly connected to the middle of the upper side of the connecting plate 6, a first hydraulic cylinder 72 is hingedly connected to the upper end of the mounting seat 71, a telescopic rod of the first hydraulic cylinder 72 faces the workpiece and is provided with a fixing member 73 for clamping the workpiece, and a rotating member for driving the first hydraulic cylinder 72 to rotate along the hinge point is provided on the mounting seat 71. In the embodiment of the present application, the rotating member is configured as a motor (not shown in the figure) fixedly connected to the mounting seat 71, and the output shaft of the motor is fixedly connected to the hinge point between the first hydraulic cylinder 72 and the mounting seat 71.

[0046] After the workpiece is punched, the handle 415 drives the driving rod 414 to rotate in the direction away from the workpiece until the driving push rod 4 is separated from the workpiece, and the workpiece is pushed out of the limiting groove 221 by the pushing assembly 8. The first hydraulic cylinder 72 extends and drives the fixing member 73 to move in the direction close to the workpiece and pushes the sliding plate 5 along the sliding groove 211 to drive the push rod 4 to move to the side away from the first limiting plate 22. The spring 212 is compressed. When the fixing member 73 moves to the workpiece, the fixing member 73 clamps the workpiece. At this time, the first hydraulic cylinder 72 contracts and drives the workpiece to separate from the bottom plate 21 of the punching clamping assembly 2 through the fixing member 73. The spring 212 recovers its deformation and pushes the sliding plate 5 and the push rod 4 to reset.

[0047] The motor rotates and drives the first hydraulic cylinder 72 to rotate in the direction close to the grinding clamping assembly 3 until it faces the grinding clamping assembly 3. At this time, the telescopic rod of the first hydraulic cylinder 72 is extended and places the workpiece on the bottom plate 21 of the grinding clamping assembly 3. At this time, the sliding plate 5 and the push rod 4 of the grinding clamping assembly 3 are pushed to the side away from the mounting seat 71, and the spring 212 is compressed, driving the fixing part 73 to separate from the workpiece. At this time, the spring 212 restores its deformation and pushes the sliding plate 5 and the push rod 4 to reset, pushing the workpiece to move in the direction close to the second limit plate 31, and driving the push rod 4 to press the workpiece tightly to facilitate processing of the workpiece.

[0048] Reference Figure 4 The pushing assembly 8 includes a pushing block 81 arranged at the lower end of the first limiting plate 22 close to the workpiece side. The pushing block 81 is provided with a pushing groove 811 adapted to the side wall of the workpiece on the side close to the workpiece. The first limiting plate 22 is provided with a receiving groove 222 adapted to the pushing block 81, and the pushing block 81 is inserted into the receiving groove 222.

[0049] A second hydraulic cylinder 82 is fixedly connected to a side of the first limiting plate 22 away from the workpiece. A telescopic rod of the second hydraulic cylinder 82 passes through the first limiting plate 22 and is fixedly connected to the pushing block 81 .

[0050] When the workpiece is clamped on the first limit plate 22, the pushing block 81 is located in the accommodating groove 222, the punching of the workpiece is completed, the telescopic rod of the second hydraulic cylinder 82 extends and drives the pushing block 81 to push the workpiece toward the direction close to the push rod 4, so that the fixed plate 731 can clamp and move the workpiece.

[0051] Reference Figure 2 and Figure 3 The fixing member 73 includes a fixing plate 731 adapted to the two sides of the workpiece in the length direction of the bottom plate 21, both ends of the fixing plate 731 are bent at right angles in the direction close to the workpiece, and a sliding rod 732 is fixedly connected to the middle of the side of the fixing plate 731 away from each other. A mounting frame 733 facing the workpiece is provided on the side of the fixing plate 731 close to the first hydraulic cylinder 72, and the ends of the sliding rod 732 away from each other are plugged and slidably connected to the side wall of the mounting frame 733, the telescopic rod of the first hydraulic cylinder 72 is fixedly connected to the middle of the side of the mounting frame 733 away from the fixing plate 731, and a sliding member 74 is provided on the mounting frame 733 to drive the fixing plate 731 to move in the direction of approaching each other.

[0052] Reference Figure 2 The sliding member 74 includes two first moving rods 741 which are respectively adapted to the side walls of the mounting frame 733 and one end of which is hinged to the side wall of the mounting frame 733. The other ends of the first moving rods 741 are inclined toward the side close to each other and are hinged to the second moving rod 742. The ends of the second moving rods 742 which are away from the first moving rods 741 are fixedly connected to the side of the fixing plate 731 close to the sliding rod 732.

[0053] The first moving rod 741 is provided with a push rod 743 at one end close to the first hydraulic cylinder 72, which is horizontal and perpendicular to the first hydraulic cylinder 72. Both ends of the push rod 743 are slidably connected to the inner side walls of both sides of the mounting frame 733, and the ends of the first moving rod 741 and the second moving rod 742 that are hinged to each other are both hinged to the push rod 743. The middle part of the push rod 743 is rotatably connected to a screw rod 744 parallel to the first hydraulic cylinder 72, and the other end of the screw rod 744 passes through the mounting frame 733 and is threadedly connected to the mounting frame 733.

[0054] The first hydraulic cylinder 72 drives the mounting frame 733 to drive the fixed plate 731 to move toward the direction approaching the workpiece until the fixed plate 731 is located on both sides of the workpiece, rotates the screw 744 and drives the push rod 743 to move toward the direction approaching the workpiece. At this time, the hinge point of the first moving rod 741 and the second moving rod 742 moves toward the direction approaching the workpiece, and the end of the second moving rod 742 close to the sliding rod 732 drives the sliding rod 732 to move toward each other until the fixed plate 731 clamps the workpiece, thereby facilitating the workpiece to be moved to the bottom plate 21 of the grinding clamping assembly 3.

[0055] The implementation principle of Example 2 is as follows: after the workpiece is punched, the push rod 4 is driven to separate from the workpiece, and the workpiece is pushed out of the limiting groove 221 by the pushing block 81, the first hydraulic cylinder 72 extends and drives the fixed block to move and push the sliding plate 5 to drive the push rod 4 to move to the side away from the first limiting plate 22, the spring 212 is compressed until the fixed block moves to the workpiece and clamps the workpiece, the first hydraulic cylinder 72 contracts and drives the workpiece to separate from the bottom plate 21 of the punching clamping assembly 2 through the fixed block, the spring 212 recovers its deformation and pushes the sliding plate 5 and the push rod 4 to reset;

[0056] The motor rotates and drives the first hydraulic cylinder 72 to rotate toward the grinding clamping assembly 3. The telescopic rod of the first hydraulic cylinder 72 extends and places the workpiece on the bottom plate 21 of the grinding clamping assembly 3. At this time, the sliding plate 5 and the push rod 4 of the grinding clamping assembly 3 are pushed to the side away from the mounting seat 71, and the spring 212 is compressed, driving the fixed block to separate from the workpiece. At this time, the spring 212 restores its deformation and pushes the sliding plate 5 and the push rod 4 to reset, pushing the workpiece to move in the direction close to the second limit plate 31, and driving the push rod 4 to press the workpiece tightly to facilitate processing of the workpiece.

[0057] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A clamping mechanism for machining a circular hole, characterized in that: The invention comprises a punching clamping assembly (2) and a grinding clamping assembly (3), wherein the punching clamping assembly (2) and the grinding clamping assembly (3) both comprise a base plate (21) and a clamping member arranged at one end of the upper side of the base plate (21) and having the same structure, the punching clamping assembly (2) comprises a first limiting plate (22) arranged at one end of the corresponding base plate (21) away from the clamping member, and the grinding clamping assembly (3) comprises a second limiting plate (31) arranged at one end of the corresponding base plate (21) away from the clamping member, when the workpiece is clamped between the first limiting plate (22) and the corresponding clamping member, the position of the workpiece to be punched is aligned with the punching head, and when the workpiece is clamped between the second limiting plate (31) and the corresponding clamping member, the second limiting plate (31) and the corresponding clamping member fix the workpiece.

2. A clamping mechanism for machining a circular hole according to claim 1, characterized in that: One end of the first limiting plate (22) is perpendicular to the bottom plate (21) and fixedly connected to the bottom plate (21); one end of the first limiting plate (22) away from the bottom plate (21) is bent toward the corresponding abutting member, and a limiting groove (221) adapted to the workpiece is provided at the bent end of the first limiting plate (22); the second limiting plate (31) has the same structure as the first limiting plate (22); one end of the second limiting plate (31) with the limiting groove (221) is close to the corresponding bottom plate (21) and fixedly connected to the bottom plate (21); one end of the second limiting plate (31) perpendicular to the bottom plate (21) is away from the bottom plate (21).

3. A clamping mechanism for machining a circular hole according to claim 2, characterized in that: The abutting member comprises a push rod (4) parallel to the length direction of the bottom plate (21) and facing the limiting groove (221); the push rod (4) is slidably connected to the bottom plate (21); and a moving member (41) for driving the push rod (4) to move is provided at one end of the push rod (4) away from the limiting groove (221).

4. A clamping mechanism for machining a circular hole according to claim 3, characterized in that: The movable member (41) comprises a hinged rod (413) having one end hinged to the end of the push rod (4); a hinged seat (411) is provided on the bottom plate (21); a driving rod (414) is hinged to the upper side of the hinged seat (411); the upper end of the driving rod (414) is bent at an obtuse angle toward a side away from the push rod (4); and the end of the hinged rod (413) away from the push rod (4) is hinged to the bending portion of the driving rod (414).

5. A clamping mechanism for machining a circular hole according to claim 4, characterized in that: A flip assembly (7) is provided between the punching clamping assembly and the grinding clamping assembly (3), the flip assembly (7) comprising a fixing member (73) for clamping a workpiece, a first hydraulic cylinder (72) being fixedly connected to the same side of the fixing member (73) away from the workpiece, a mounting seat (71) being provided at one end of the first hydraulic cylinder (72) away from the fixing member (73), an end of the first hydraulic cylinder (72) away from the fixing member (73) being hinged to the mounting seat (71), and a rotating member for driving the first hydraulic cylinder (72) to rotate is provided on the mounting seat (71).

6. A clamping mechanism for machining a circular hole according to claim 5, characterized in that: The fixing member (73) comprises fixing plates (731) located on both sides of the workpiece, both ends of the fixing plates (731) are bent in directions approaching each other, and the sides of the fixing plates (731) away from each other are fixedly connected with sliding rods (732), and a mounting frame (733) is provided on the side of the fixing plate (731) close to the mounting seat (71), and the sliding rods (732) are plugged into and slidably connected to the mounting frame (733), and a sliding member (74) for driving the sliding rods (732) to slide is provided on the mounting frame (733).

7. The clamping mechanism for machining a circular hole according to claim 6, characterized in that: The sliding member (74) comprises a first moving rod (741) respectively hinged on both sides of the mounting frame (733); the other end of the first moving rod (741) is hinged with a second moving rod (742); one end of the second moving rod (742) away from the first moving rod (741) is hinged with the sliding rod (732); the first moving rod (741) and the second moving rod (742) are hinged at their hinges with a same pushing rod (743); a screw rod (744) is rotatably connected to the pushing rod (743); the other end of the screw rod (744) passes through the mounting frame (733) and is threadedly connected to the mounting frame (733).

8. The clamping mechanism for machining a circular hole according to claim 7, characterized in that: The rotating member comprises a motor fixedly connected to the mounting seat (71), wherein an output shaft of the motor passes through the mounting seat (71) and is fixedly connected to an end of the first hydraulic cylinder (72) away from the mounting frame (733).

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