Four-axis front and back clamp for clamp body

Abstract

The utility model discloses a four-axis front and back face clamp for a clamp body. The four-axis front and back face clamp comprises a workbench; two groups of clamping mechanisms which are symmetrical in pairs are divided into a first clamping mechanism and a second clamping mechanism, the first clamping mechanism is mounted above the working table when viewed from the forward direction, and the second clamping mechanism is mounted below the working table and used for clamping and fixing a special-shaped workpiece to be machined; the single first clamping mechanism comprises positioning columns which are symmetrically distributed in pairs, are matched with positioning convex blocks on the special-shaped workpiece to be machined to fix the special-shaped workpiece and are used for limiting the position of the special-shaped workpiece to be machined in the Z-axis direction; the swinging piece is of a U-shaped structure and can swing in the X-axis direction, and at least one of two contacts on the top of the swinging piece is matched with a positioning groove in the special-shaped workpiece to be machined for positioning and supporting; and the ball socket rod can float up and down, is matched with a spherical groove in the to-be-machined special-shaped workpiece, and is used for limiting the position of the to-be-machined special-shaped workpiece in the X-axis direction.

Description

Technical Field

[0001] The present application relates to the technical field of fixtures, and in particular to a four-axis front and back fixture for a pliers body. Background Art

[0002] In the field of machining, especially during the machining of complex and irregular workpieces, how to ensure the precise positioning and stable clamping of the workpiece during machining is a key factor in improving machining accuracy and efficiency.

[0003] Due to the irregular and complex structure of the pliers body machining, it is difficult for existing general fixtures to effectively clamp it, and how to effectively support and fix the pliers body has become a difficult problem.

[0004] The above content is only used to assist in understanding the technical solution of the present application, and does not represent an admission that the above content is the closest prior art to the present application. Summary of the Invention

[0005] Based on this, the present application provides a four-axis front and back fixture for a pliers body to solve one of the above technical problems.

[0006] The technical solution adopted by the present application to solve its technical problems is: a four-axis front and back fixture for a pliers body, including: a workbench; two groups of clamping mechanisms that are symmetric in pairs, divided into a first clamping mechanism and a second clamping mechanism. When viewed from the front, the first clamping mechanism is installed above the workbench, and the second clamping mechanism is installed below the workbench, for clamping and fixing the irregular workpiece to be machined; a single first clamping mechanism, including: positioning columns, symmetrically distributed in pairs, cooperating with the positioning protrusions on the workpiece to be machined to fix the irregular workpiece, for restricting the position of the workpiece to be machined in the Z-axis direction; a swing member, having a U-shaped structure, swingable in the X-axis direction, at least one of the two contact points at its top cooperating with the positioning groove on the workpiece to be machined for positioning support; a ball socket rod, floating up and down, matching with the spherical groove on the workpiece to be machined, for restricting the position of the workpiece to be machined in the X-axis direction; a first main pressing part, driven by a first oil cylinder, symmetrically arranged on both sides of the workpiece to be machined, for pressing and fixing the workpiece to be machined; a clamping jaw, driven by a second oil cylinder, rotatably arranged on the output shaft of the second oil cylinder, for roughly limiting the workpiece to be machined; a single second clamping mechanism, including: a support plate, for placing the workpiece to be machined, on which a positioning block is formed, for cooperating with the hole surface of the cylinder hole on the workpiece to be machined for support, a connecting plate is installed on the support plate, and a positioning pin is fixed on the connecting plate, for cooperating with the positioning hole on the workpiece to be machined for positioning; a second main pressing part, driven by a third oil cylinder, cooperating with the main locking hole opened on the workpiece to be machined to press the workpiece to be machined.

[0007] In some embodiments, it further includes a fixing plate, on which the positioning posts, the swinging member and the ball socket rod are installed. A through hole is provided on the fixing plate, and the fixing plate is fixed on the workbench by spring pins.

[0008] In some embodiments, the first clamping mechanism further includes a first auxiliary support member, which is driven by a fourth oil cylinder, slidably arranged on the workbench, and extends out from the through hole.

[0009] In some embodiments, the first main pressing part includes: a fixed block installed on the first oil cylinder; a pressing member rotatably arranged at the output end of the first oil cylinder for abutting and pressing the special-shaped workpiece to be processed; a connecting member, one end of which is rotatably arranged on the fixed block, and the other end is rotatably connected to the pressing member.

[0010] In some embodiments, a pair of pressing blocks are installed on the clamping jaw, and an inclined surface is formed at the bottom of the pressing block. After the clamping jaw rotates and deflects, the pressing block can automatically center and press the special-shaped workpiece to be processed.

[0011] In some embodiments, the second main pressing part includes: a third oil cylinder installed on the support plate; a rotating member rotatably arranged at the output end of the third oil cylinder, on which a pressing rod is installed; an intermediate member, one end of which is rotatably connected to the rotating member, and the other end is rotatably connected to the third oil cylinder.

[0012] In some embodiments, an anti-misalignment rod is installed on the support plate, and the anti-misalignment rod is used to cooperate with the secondary locking hole provided on the special-shaped workpiece to be processed.

[0013] In some embodiments, a second auxiliary support member is further installed on the support plate.

[0014] In some embodiments, the connecting plate is detachably installed on the support plate by spring pins.

[0015] In some embodiments, the workbench is installed on a multi-axis machining center and can rotate on a servo axis.

[0016] The beneficial effects of the present application are as follows:

[0017] 1), The first clamping mechanism cooperates with the existing features of the workpiece through components such as positioning posts, swinging rods and ball socket rods, and effectively positions, supports and clamps the workpiece multiple times. The second clamping mechanism utilizes the features such as the positioning holes and cylinder holes of the workpiece, and cooperates with the workpiece through components such as the second pressing part and positioning pins to achieve stable clamping and fixing.

[0018] 2), The first clamping mechanism and the second clamping mechanism are installed on the front and back sides of the workbench respectively, providing clamping support for two different processing procedures. The workbench is installed on a multi-axis machining center, which helps to improve the processing efficiency and accuracy. Brief Description of the Drawings

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application. For those skilled in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0020] Figure 1 It is a front view schematic diagram of the present application.

[0021] Figure 2 It is a schematic diagram of the installation of the first clamping mechanism of the present application.

[0022] Figure 3 It is a schematic diagram of the first clamping mechanism of the present application.

[0023] Figure 4 It is a partial schematic diagram of the first main pressing part of the present application.

[0024] Figure 5 It is a schematic diagram of the installation of the second clamping mechanism of the present application.

[0025] Figure 6 It is a schematic diagram of the second clamping mechanism of the present application.

[0026] Figure 7 It is a schematic diagram of another angle of the second clamping mechanism of the present application.

[0027] Figure 8 It is a schematic diagram of the second main pressing part of the present application.

[0028] Figure 9 It is a schematic diagram of the special-shaped workpiece of the present application.

[0029] Figure 10 It is a schematic diagram of the special-shaped workpiece of the present application from another angle.

[0030] Explanation of the reference numerals in the drawings: 1. Special-shaped workpiece, 11. Positioning bump, 12. Positioning groove, 13. Spherical groove, 14. Positioning hole, 15. Main locking hole, 16. Sub-locking hole, 17. Cylinder hole, 2. Workbench, 3. First clamping mechanism, 31. Positioning column, 32. Swing member, 33. Ball socket rod, 34. First main pressing part, 341. Fixed block, 342. Pressing member, 343. Connecting member, 35. Claw, 36. Pressing block, 37. First auxiliary support member, 4. Second clamping mechanism, 41. Support plate, 42. Connecting plate, 43. Positioning pin, 44. Second main pressing part, 441. Rotating member, 442. Intermediate member, 443. Pressing rod, 45. Anti-misalignment rod, 46. Second auxiliary support member, 47. Positioning block, 5. Fixed plate, 6. Spring pin, 7. First oil cylinder, 8. Second oil cylinder, 9. Third oil cylinder, 10. Fourth oil cylinder. Detailed implementation manners

[0031] Next, the technical solutions in the embodiments of the present application will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement them. When the combination of the technical solutions appears to be contradictory or unable to be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope of the present application.

[0032] In the embodiments of the present application, please refer to Figures 1-10 as shown. The four-axis front and back clamp for the pliers body mainly includes: a workbench 2; two groups of symmetrically arranged clamping mechanisms, which are divided into a first clamping mechanism 3 and a second clamping mechanism 4. When viewed from the front (such as Figure 1As shown in the figure, the first clamping mechanism 3 is installed above the workbench 2, and the second clamping mechanism 4 is installed below the workbench 2 for clamping and fixing the special-shaped workpiece 1 to be processed. A single first clamping mechanism 3 includes: positioning columns 31, which are distributed symmetrically in pairs and cooperate with the positioning bumps 11 on the special-shaped workpiece 1 to be processed to fix the special-shaped workpiece 1 to be processed, and are used to limit the position of the special-shaped workpiece 1 to be processed in the Z-axis direction; a swinging member 32, which is of a U-shaped structure and can swing in the X-axis direction, and at least one of the two contacts at the top thereof cooperates with the positioning groove 12 on the special-shaped workpiece 1 to be processed for positioning and supporting; a ball socket rod 33, which can float up and down and matches the spherical groove 13 on the special-shaped workpiece 1 to be processed, and is used to limit the position of the special-shaped workpiece 1 to be processed in the X-axis direction; a first main pressing part 34, which is driven by a first oil cylinder 7 and is symmetrically arranged on both sides of the special-shaped workpiece 1 to be processed for pressing and fixing the special-shaped workpiece 1 to be processed; a clamping jaw 35, which is driven by a second oil cylinder 8 and is rotatably arranged on the output shaft of the second oil cylinder 8 for roughly limiting the special-shaped workpiece 1 to be processed. A single second clamping mechanism 4 includes: a support plate 41 for placing the special-shaped workpiece 1 to be processed, on which a positioning block 47 is formed for cooperating with the hole surface of the cylinder hole 17 on the special-shaped workpiece 1 to be processed for support. A connecting plate 42 is installed on the support plate 41, and a positioning pin 43 is fixed on the connecting plate 42 for cooperating with the positioning hole 14 on the special-shaped workpiece 1 to be processed for positioning; a second main pressing part 44, which is driven by a third oil cylinder 9 and cooperates with the main locking hole 15 on the special-shaped workpiece 1 to be processed to press the special-shaped workpiece 1 to be processed.

[0033] Next, some preferred / improved embodiments based on the above embodiments will be further elaborated. Any one or a combination of multiple of the following embodiments can be selected.

[0034] As Figure 3 shown, it further includes a fixing plate 5, on which the positioning columns 31, the swinging member 32 and the ball socket rod 33 are installed. Through holes are formed on the fixing plate 5, and the fixing plate 5 is fixed on the workbench 2 by spring pins 6. Using spring pins 6 for fixing and installation is convenient, and it is convenient for component replacement, repair or overall replacement.

[0035] Furthermore, the first clamping mechanism 3 further includes a first auxiliary support member 37. The auxiliary support member is driven by a fourth oil cylinder 10, is slidably arranged on the workbench 2, and extends out from the through hole, and is used for auxiliary support when the special-shaped workpiece 1 is drilled along the Y-axis.

[0036] Furthermore, a pair of pressing blocks 36 are installed on the clamping jaw 35. The bottom of the pressing blocks 36 forms an inclined surface. After the clamping jaw 35 rotates and deflects, the pressing blocks 36 can automatically center and press the special-shaped workpiece 1 to be processed. The function of the clamping jaw 35 is to further center and limit the special-shaped workpiece 1 on the premise that the first main pressing part 34 presses.

[0037] As shown in Figure 4 , the first main pressing part 34 includes: a fixing block 341 mounted on the first oil cylinder 7; a pressing member 342 rotatably arranged at the output end of the first oil cylinder 7 for abutting and pressing the special-shaped workpiece 1 to be processed; a connecting member 343 with one end rotatably arranged on the fixing block 341 and the other end rotatably connected to the pressing member 342. Under the driving action of the first oil cylinder 7, the pressing member 342 is pushed. Under the connection of the connecting member 343, the pressing member 342 deflects towards the special-shaped workpiece 1 with the end of the connecting member 343 as the center of the circle. The first main pressing parts 34 are arranged in pairs, distributed on both sides of the special-shaped workpiece 1, and work synchronously to press the special-shaped workpiece 1.

[0038] As shown in Figure 8 , the second main pressing part 44 includes: a third oil cylinder 9 mounted on the support plate 41; a rotating member 441 rotatably arranged at the output end of the third oil cylinder 9, on which a pressing rod 443 is mounted; an intermediate member 442 with one end rotatably connected to the rotating member 441 and the other end rotatably connected to the third oil cylinder 9. When it is necessary to press the special-shaped workpiece 1, the third oil cylinder 9 drives the rotating member 441 to deflect with one end of the intermediate member 442 as the center of the circle, and then drives the pressing rod 443 mounted on the rotating member 441 to press the special-shaped workpiece 1.

[0039] As shown in Figures 6-7 , an anti-misalignment rod 45 is mounted on the support plate 41. The anti-misalignment rod 45 is used to cooperate with the secondary locking hole 16 on the special-shaped workpiece 1 to be processed. The anti-misalignment rod 45 can increase the matching accuracy between the pressing rod 443 and the special-shaped workpiece 1, and avoid incorrect assembly.

[0040] Further, a second auxiliary support member 46 is also mounted on the support plate 41 to play a role in auxiliary support.

[0041] Further, the connecting plate 42 is detachably mounted on the support plate 41 through a spring pin 6.

[0042] Specifically, the workbench 2 is mounted on a multi-axis machining center and can rotate on a servo axis, improving the machining efficiency.

[0043] In the actual use process, first, the special-shaped workpiece 1 needs to be placed on the first clamping mechanism 3 for clamping. The workpiece positioning protrusions 11 and positioning grooves 12 are respectively matched with the positioning posts 31 and swing parts 32 on the special-shaped workpiece 1. At the same time, the height of the ball socket rod 33 is adjusted until it completely fits the spherical surface groove 13 to complete the preliminary placement. Then, the two sides of the first main pressing part 34 press the special-shaped workpiece 1 at the same time. After that, the second oil cylinder 8 drives the clamping jaw 35 to deflect, and the pressing block 36 further centers and presses the special-shaped workpiece 1. Finally, the first auxiliary support 37 driven by the fourth oil cylinder 10 is lifted, and auxiliary support is realized after reaching the appropriate position. Thus, the first clamping mechanism 3 completes the fixation of the special-shaped workpiece 1.

[0044] After operations such as tool cutting and drilling, the first process ends, and the workpiece is removed. At the same time, the workbench 2 deflects to the other side under the action of the multi-axis machining center.

[0045] Next, the special-shaped workpiece 1 is placed on the second clamping mechanism 4. The special-shaped workpiece 1 is placed on the support plate 41, and the anti-misalignment rod 45 is correctly inserted into the secondary locking hole 16 on the special-shaped workpiece 1. At the same time, the positioning block 47 fits the hole surface of the cylinder hole 17 of the special-shaped workpiece 1, and the positioning pin 43 is matched with the positioning hole 14 on the special-shaped workpiece 1. Finally, the second main pressing part 44 driven by the third oil cylinder 9 works, and the pressing rod 443 is matched with the main locking hole 15 to realize the pressing and fixation of the special-shaped workpiece 1 for further processing.

[0046] So far, various embodiments of the present application have been described in detail. To avoid obscuring the concept of the present application, some details well known in the art have not been described. Those skilled in the art can fully understand how to implement the technical solutions disclosed here based on the above description.

[0047] Finally, it should be noted that the above are only the preferred embodiments of the present application. The foregoing embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the various embodiments of the present application.

Claims

1. A four-axis front and back clamp for a clamp body, characterized in that: include: Workbench; Two groups of clamping mechanisms are symmetrical, divided into a first clamping mechanism and a second clamping mechanism. When viewed from the front, the first clamping mechanism is installed above the workbench, and the second clamping mechanism is installed below the workbench, for clamping and fixing the special-shaped workpiece to be processed; A single first clamping mechanism, comprising: The positioning columns are symmetrically distributed in pairs and cooperate with the positioning protrusions on the special-shaped workpiece to be processed to fix the special-shaped workpiece and are used to limit the position of the special-shaped workpiece to be processed in the Z-axis direction; The swinging member is a U-shaped structure and can swing in the X-axis direction. At least one of the two contact points on its top cooperates with the positioning groove on the special-shaped workpiece to be processed for positioning support; The ball-and-socket rod can float up and down and match the spherical groove on the special-shaped workpiece to be processed, and is used to limit the position of the special-shaped workpiece in the X-axis direction; The first main clamping part is driven by the first oil cylinder and is symmetrically arranged on both sides of the special-shaped workpiece to be processed, and is used to clamp and fix the special-shaped workpiece to be processed; The pressing claw is driven by the second oil cylinder, rotatably arranged on the output shaft of the second oil cylinder, and is used for roughly limiting the position of the special-shaped workpiece to be processed; A single second clamping mechanism, comprising: A support plate is used to place the special-shaped workpiece to be processed, and a positioning block is formed on the support plate, which is used to cooperate with the cylinder hole surface on the special-shaped workpiece to be processed for support. A connecting plate is installed on the support plate, and a positioning pin is fixed on the connecting plate, which is used to cooperate with the positioning hole on the special-shaped workpiece to be processed for positioning; The second main clamping part is driven by the third oil cylinder to cooperate with the main locking hole opened on the special-shaped workpiece to be processed to clamp the special-shaped workpiece to be processed.

2. A four-axis front and back clamp for a clamp body according to claim 1, characterized in that: It also includes a fixing plate, on which the positioning column, the swinging member and the ball and socket rod are installed, the fixing plate is provided with a through hole, and the fixing plate is fixed to the workbench through a spring pin.

3. A four-axis front and back clamp for a clamp body according to claim 2, characterized in that: The first clamping mechanism further includes a first auxiliary supporting member, which is driven by a fourth oil cylinder, slidably disposed on the workbench, and extends out of the through hole.

4. A four-axis front and back clamp for a clamp body according to claim 1, characterized in that: The first main pressing part comprises: A fixed block, mounted on the first oil cylinder; A pressing member, rotatably arranged on the output end of the first oil cylinder, for contacting and pressing the special-shaped workpiece to be processed; A connecting piece has one end rotatably disposed on the fixing block and the other end rotatably connected to the pressing piece.

5. A four-axis front and back clamp for a clamp body according to claim 1, characterized in that: A pair of clamping blocks are installed on the clamping claws, and an inclined surface is formed on the bottom of the clamping blocks. After the clamping claws rotate and deflect, the clamping blocks can automatically clamp the special-shaped workpiece to be processed in the middle.

6. A four-axis front and back clamp for a clamp body according to claim 1, characterized in that: The second main pressing part comprises: A third oil cylinder is mounted on the support plate; A rotating member, rotatably arranged on the output end of the third oil cylinder, and having a pressing rod installed thereon; The middle piece has one end rotatably connected to the rotating piece, and the other end rotatably connected to the third oil cylinder.

7. A four-axis front and back clamp for a clamp body according to claim 1, characterized in that: An anti-error rod is installed on the support plate, and the anti-error rod is used to cooperate with a secondary locking hole opened on the special-shaped workpiece to be processed.

8. A four-axis front and back clamp for a clamp body according to claim 1, characterized in that: An auxiliary support member is also installed on the support plate.

9. A four-axis front and back clamp for a clamp body according to claim 1, characterized in that: The connecting plate is detachably mounted on the supporting plate via spring pins.

10. A four-axis front and back clamp for a clamp body according to claim 1, characterized in that: The worktable is mounted on a multi-axis machining center and can rotate on a servo axis.

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