Tool capable of rapidly replacing clamp

Abstract

The invention relates to the technical field of tool clamps, and discloses a tool capable of quickly replacing clamps, which comprises a workbench, a processing cavity is formed in the inner wall of the workbench, an air cylinder is fixedly mounted on the upper surface of the workbench, and a replaceable clamping module is arranged on the upper surface of the workbench. The replaceable clamping module comprises a mounting base, a clamp base, a clamping plate, a T-shaped strip, a T-shaped groove, an inserting block, a connecting block, a first reset spring, a rectangular groove and a round hole. According to the tool capable of rapidly replacing the clamp, rapid positioning and installation of the clamp base are achieved through sliding fit of the T-shaped strip and the T-shaped groove, the structure is simple, operation is convenient and fast, the clamp base is automatically locked by the inserting block under the action of the reset spring, the clamp base is effectively prevented from shaking or falling off in the horizontal direction by combining the design of the rectangular groove and the round hole, the clamping stability is improved, and the work efficiency is improved. And meanwhile, the modular design supports rapid replacement of various clamps, the machining requirements of different workpieces are met, and the production efficiency and the equipment universality are remarkably improved.

Description

Technical Field

[0001] This invention relates to the field of tooling and fixture technology, specifically to a tooling fixture with a quick-change fixture. Background Technology

[0002] Tooling fixtures are tools and equipment used to fix, clamp, or support workpieces. They play an important role in various industries and applications, especially in manufacturing and assembly processes. There are many types of tooling fixtures, including manual clamps, mechanical clamps, and hydraulic clamps. Common tooling fixtures include clamps, pliers, chucks, and clamping tables. They provide stable clamping force and precise positioning to ensure the safe and accurate machining of workpieces.

[0003] According to a tooling fixture with a quick-change chuck (Announcement No.: CN220427634U), the above application uses a combination of a chuck, an L-shaped fixed seat, and an L-shaped sliding seat. The structure is simple, convenient, and practical, allowing for quick and easy chuck replacement, greatly reducing operational difficulty and improving work efficiency. Furthermore, by using a combination of a cylinder and a second slide groove, automatic clamping can be achieved.

[0004] However, in actual use, although the fixtures use T-blocks and T-slots for positioning and easy assembly, the bottom of the workpiece is often suspended during processing. As a result, the weight of the workpiece itself presses heavily on the fixture, which causes the connection between the fixture and the mounting base to be subjected to high longitudinal offset stress, affecting subsequent safe disassembly and docking. In view of this, we propose a tooling with quick fixture replacement. Summary of the Invention

[0005] The purpose of this invention is to provide a tooling with quick-change fixtures to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a tooling with a quick-change fixture, including a worktable, a processing cavity opened in the inner wall of the worktable, a cylinder fixedly installed on the upper surface of the worktable, and a replaceable clamping module provided on the upper surface of the worktable;

[0007] The replaceable clamping module includes a mounting base, which is fixedly mounted on the upper surface of the worktable. A clamping seat is detachably mounted on the inner wall of the mounting base. A clamping plate is fixedly mounted on the outer wall of the clamping seat near the machining cavity. A T-shaped strip is fixedly mounted on the lower surface of the clamping seat. A T-shaped groove is formed on the upper bottom surface of the mounting base. An insert block is slidably mounted through the inner side wall of the mounting base. A connecting block is fixedly mounted on the outer wall of the insert block away from the center of the worktable. A return spring is fixedly connected between the side wall of the connecting block and the inner wall of the mounting base. A rectangular groove is formed on the side wall of the insert block. A circular hole is formed at the center of the insert block.

[0008] Preferably, there are two sets of replaceable clamping modules. The bottom of the mounting base of one set of replaceable clamping modules is fixedly connected to the upper surface of the worktable, while the side wall of the mounting base of the other set of replaceable clamping modules is fixedly connected to the output end of the cylinder. At the same time, protrusions are provided on both sides of the bottom of the mounting base of the other set of modules, and the upper surface of the worktable is provided with a sliding groove that matches the protrusions.

[0009] Preferably, the T-groove and the T-strip slide together, and the bottom and sides of the fixture seat are provided with T-strips, thereby increasing the contact area between the fixture seat and the mounting base at the bottom and sides.

[0010] Preferably, the clamp seat has a slot of a size that matches the size of the insert block on the inner wall of the side near the mounting seat, and the number of connecting blocks is set to two sets, the two sets of connecting blocks are symmetrically arranged with the vertical central axis of the insert block as the axis of symmetry, and the inner wall of the side of the mounting seat has a shrinkage groove for storing the insert block, and the end of the shrinkage groove has a cavity with a cross-sectional size that matches the connecting block.

[0011] Preferably, the number of the inserts is set to two sets, and the two sets of inserts are centrally symmetrical about the center of the side of the mounting base. So that when the clamp base and the mounting base are installed together, the two sets of inserts located on the upper and lower sides of the horizontal central axis of the side of the mounting base in the vertical direction can guide, prompt and limit the clamp base.

[0012] Preferably, the mounting base is internally provided with an adsorption positioning component, which includes a suction seat. The suction seat is fixedly installed on the outer wall of the end of the mounting base. The inner wall of the suction seat has a piston chamber. A piston plate is slidably installed on the inner surface of the piston chamber. A return spring is fixedly connected between the side wall of the piston plate and the inner wall of the piston chamber. A push rod is fixedly installed on the outer wall of the piston plate away from the return spring. An air guide tube is fixedly installed on the inner wall of the mounting base. A fixing block is fixedly installed on the inner side wall of the mounting base. A suction cup is fixedly installed at the end of the fixing block.

[0013] Preferably, there are three sets of fixing blocks and suction cups, and the three sets of fixing blocks and suction cups are distributed in an inverted isosceles triangle on the side wall of the mounting base, so that the fixing blocks and suction cups can form a stable adsorption effect on the side of the clamp base, ensuring the installation stability of the clamp base on the mounting base.

[0014] Preferably, the clamping seat is provided with an anti-pressure component on the side near the machining cavity. The anti-pressure component includes an arc-shaped groove, which is formed on the inner wall of the clamping plate. An arc-shaped plate is slidably installed on the inner surface of the arc-shaped groove.

[0015] Preferably, the clamping plates, arc grooves, and arc plates are all configured in an arc shape. Therefore, when the two sets of replaceable clamping modules approach each other to clamp the workpiece, the two sets of arc-shaped clamping plates will form a circular protective cover on the outside of the workpiece. At this time, by rotating the arc plate, the arc plate can be rotated into the arc groove of the other set of replaceable clamping modules, thereby forming a vertical pressure-resistant connection structure at the connection between the two sets of clamping plates.

[0016] Compared with the prior art, the present invention provides a tooling with quick fixture change capability, which has the following advantages:

[0017] 1. This quick-change fixture achieves rapid positioning and installation of the fixture seat through the sliding cooperation of T-shaped bars and T-slots. It has a simple structure and is easy to operate. The insert block automatically locks the fixture seat under the action of the return spring. Combined with the design of rectangular slots and round holes, it effectively prevents the fixture seat from shaking or falling off in the horizontal direction, improving clamping stability. At the same time, the modular design supports the quick change of various fixtures to adapt to the processing needs of different workpieces, significantly improving production efficiency and equipment versatility.

[0018] 2. This quick-change fixture uses a push rod to compress the piston plate during the fixture seat's advancement, which in turn compresses the piston chamber. This, in turn, draws air from the suction cups through the air guide pipe, creating a negative pressure adsorption. The three sets of suction cups are arranged in an inverted isosceles triangle, evenly adsorbing onto the side of the fixture seat, significantly enhancing its fixation strength on the mounting base. This design effectively counteracts vibrations and offset forces generated during processing, ensuring the fixture seat remains stable under high-speed or heavy-load conditions, thus improving the overall safety and reliability of the fixture.

[0019] 3. This quick-change fixture, by setting arc grooves and rotatable arc plates in the clamping plate, allows two sets of fixtures to interlock when clamping workpieces, forming a continuous ring support structure. This structure significantly enhances the fixture's resistance to compression and bending in the vertical direction, preventing workpiece deformation or displacement due to its own weight or processing force. It is especially suitable for clamping long shafts or heavy workpieces, effectively dispersing stress, improving clamping rigidity and processing accuracy, and extending the service life of the fixture. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 This is a schematic diagram showing the separation of the clamp base and the mounting base of the present invention;

[0022] Figure 3 This is a schematic cross-sectional view of the suction seat of the present invention;

[0023] Figure 4 This is a schematic diagram of the adsorption and positioning component structure of the present invention;

[0024] Figure 5 This is a schematic diagram of the insert structure of the present invention.

[0025] In the diagram: 1. Workbench; 2. Machining cavity; 3. Cylinder; 4. Replaceable clamping module; 41. Mounting base; 42. Fixture base; 43. Clamping plate; 44. T-shaped strip; 45. T-shaped groove; 46. Insert block; 47. Connecting block; 48. Return spring one; 49. Rectangular groove; 410. Round hole; 5. Adsorption positioning assembly; 51. Suction seat; 52. Piston chamber; 53. Piston plate; 54. Return spring two; 55. Push rod; 56. Air guide pipe; 57. Fixing block; 58. Suction cup; 6. Anti-pressure assembly; 61. Arc groove; 62. Arc plate. Detailed Implementation

[0026] like Figures 1-5 As shown, the present invention provides a technical solution: a tooling with a quick-change fixture, including a worktable 1, a processing cavity 2 opened in the inner wall of the worktable 1, a cylinder 3 fixedly installed on the upper surface of the worktable 1, and a replaceable clamping module 4 provided on the upper surface of the worktable 1. The replaceable clamping module 4 includes a mounting base 41, a fixture base 42, a clamping plate 43, a T-shaped strip 44, a T-shaped groove 45, an insert block 46, a connecting block 47, a return spring 48, a rectangular groove 49, and a round hole 410.

[0027] In one embodiment of the present invention, the mounting base 41 is fixedly mounted on the upper surface of the workbench 1. A clamping base 42 is detachably mounted on the inner wall of the mounting base 41. A clamping plate 43 is fixedly mounted on the outer wall of the clamping base 42 near the machining cavity 2. A T-shaped strip 44 is fixedly mounted on the lower surface of the clamping base 42. A T-shaped groove 45 is opened on the upper bottom surface of the mounting base 41. An insert block 46 is slidably mounted through the inner side wall of the mounting base 41. A connecting block 47 is fixedly mounted on the outer wall of the insert block 46 away from the center of the workbench 1. A return spring 48 is fixedly connected between the side wall of the connecting block 47 and the inner wall of the mounting base 41. A rectangular groove 49 is opened on the side wall of the insert block 46. A round hole 410 is opened at the center of the insert block 46.

[0028] Furthermore, there are two sets of replaceable clamping modules 4. The bottom of the mounting base 41 of one set of replaceable clamping modules 4 is fixedly connected to the upper surface of the worktable 1, while the side wall of the mounting base 41 of the other set of replaceable clamping modules 4 is fixedly connected to the output end of the cylinder 3. At the same time, protrusions are provided on both sides of the bottom of the mounting base 41 of the other set, and the upper surface of the worktable 1 is provided with a sliding groove that matches the protrusions. Thus, when the cylinder 3 is started, the replaceable clamping module 4 of the other set moves toward the other set of replaceable clamping modules 4 to achieve the clamping of the workpiece.

[0029] Meanwhile, the T-slot 45 slides with the T-bar 44, and the bottom and sides of the clamp seat 42 are provided with T-bars 44, thereby increasing the contact area between the clamp seat 42 and the mounting base 41, and further improving the clamp seat 42's resistance to horizontal offset or bending. In addition, the mounting base 41 is L-shaped to facilitate the alignment and installation of the clamp seat 42. Specifically, the inner wall of the clamp seat 42 near the mounting base 41 has a slot of a size that matches the insertion block 46, and the number of connecting blocks 47 is set to a certain value. Two sets of connecting blocks 47 are symmetrically arranged with the vertical central axis of the insert block 46 as the axis of symmetry. The inner side wall of the mounting base 41 is provided with a shrinkage groove for the insert block 46 to be housed. The end of the shrinkage groove is provided with a cavity whose cross-sectional size is adapted to the connecting block 47. Specifically, the two ends of the return spring 48 are fixedly connected to the side wall of the connecting block 47 and the inner wall of the end of the cavity, respectively. In addition, the outer walls on both sides of the insert block 46 near the clamp seat 42 are arranged in an arc shape to avoid motion interference caused by the insertion block 46 in the mounting base 41 to the clamp seat 42 during the docking installation.

[0030] In addition, there are two sets of insert blocks 46, and the two sets of insert blocks 46 are centrally symmetrical about the center of the side of the mounting base 41. When the clamping base 42 is installed with the mounting base 41, the two sets of insert blocks 46 located on the upper and lower sides of the horizontal central axis of the side of the mounting base 41 in the vertical direction can guide, prompt and limit the clamping base 42. When the clamping base 42 is pushed to the position where it is fully engaged with the mounting base 41, the insert blocks 46 will enter the slots opened on the side of the clamping base 42. The rectangular groove 49 on the side of the insert block 46 and the round hole 410 at the center are designed to enhance the positioning stability of the clamping base 42 on the mounting base 41 and prevent it from lateral shaking or falling off, which would affect the positioning effect of the entire tooling.

[0031] Please refer to the attached instruction manual for details. Figures 3-4The mounting base 41 is equipped with an adsorption positioning component 5. The adsorption positioning component 5 includes a suction seat 51, which is fixedly installed on the outer wall of the end of the mounting base 41. The inner wall of the suction seat 51 has a piston cavity 52. ​​A piston plate 53 is slidably installed on the inner surface of the piston cavity 52. ​​A second return spring 54 is fixedly connected between the side wall of the piston plate 53 and the inner wall of the piston cavity 52. ​​A push rod 55 is fixedly installed on the outer wall of the piston plate 53 away from the second return spring 54. An air guide tube 56 is fixedly installed on the inner wall of the mounting base 41. A fixing block 57 is fixedly installed on the inner side wall of the mounting base 41. A suction cup 58 is fixedly installed at the end of the fixing block 57.

[0032] Specifically, the piston plate 53 is adapted to the size of the piston cavity 52, and the push rod 55 is located on the side of the piston plate 53 near the mounting base 41, so that it slides along the surface of the mounting base 41 when the clamping base 42 is assembled. Finally, the outer wall of the end of the clamping base 42 will contact the push rod 55 and push the push rod 55 towards the piston cavity 52, thereby causing the piston plate 53 to compress the piston cavity 52. ​​Furthermore, the end of the air guide pipe 56 is connected to the inside of the piston cavity 52. ​​When the piston plate 53 compresses the piston cavity 52, air is drawn in through the air guide pipe 56. Furthermore, a one-way air valve is provided on the side wall of the suction seat 51. The one-way air valve is a one-way air outlet valve. When the piston plate 53 compresses the inside of the piston cavity 52, the original air in the piston cavity 52 will be discharged outward through the one-way valve, while the other part of the piston cavity 52 will be filled with the air drawn in by the air guide pipe 56.

[0033] Meanwhile, three sets of fixing blocks 57 and suction cups 58 are provided, and the three sets of fixing blocks 57 and suction cups 58 are distributed in an inverted isosceles triangle on the side wall of the mounting base 41. This allows the fixing blocks 57 and suction cups 58 to form a stable adsorption effect on the side of the clamping base 42, ensuring the installation stability of the clamping base 42 on the mounting base 41. The suction cups 58 are connected to the air guide pipe 56. When the clamping base 42 is assembled on the mounting base 41, the end of the clamping base 42 squeezes the push rod 55, causing the piston plate 53 to compress the piston chamber 52. Combined with the suction of the suction cups 58 by the air guide pipe 56, the air between the suction cups 58 and the side wall of the clamping base 42 is drawn away to form a local negative pressure state. Through the adsorption of the three sets of suction cups 58, the clamping base 42 maintains high stability on the mounting base 41, avoiding displacement or falling off, and improving the stability of the device during use.

[0034] Please refer to the instruction manual appendix. Figures 1-2 A pressure-resistant component 6 is provided on the side of the fixture seat 42 near the processing cavity 2. The pressure-resistant component 6 includes an arc groove 61, which is opened on the inner wall of the clamping plate 43. An arc plate 62 is slidably installed on the inner surface of the arc groove 61.

[0035] In an embodiment of the present invention, the size of the arc groove 61 is adapted to the arc plate 62, and the sides of the clamping seats 42 corresponding to the two sets of replaceable clamping modules 4 are provided with anti-pressure components 6. Furthermore, the clamping plate 43, the arc groove 61, and the arc plate 62 are all set in an arc shape. Therefore, when the two sets of replaceable clamping modules 4 approach each other to clamp the workpiece, the two sets of arc-shaped clamping plates 43 will form a circular protective cover on the outside of the workpiece. At this time, by rotating the arc plate 62, the arc plate 62 is rotated into the arc groove 61 of the other set of replaceable clamping modules 4, thereby forming a vertical anti-pressure connection structure at the connection between the two sets of clamping plates 43, improving the load-bearing capacity and anti-deformation effect of the clamp on the workpiece, and thus improving the stability of the device.

[0036] In this invention, during use, when the clamp seat 42 needs to be installed, the operator pushes the T-shaped strip 44 at the bottom of the clamp seat 42 along the T-shaped groove 45 on the mounting base 41 to achieve initial positioning and horizontal anti-displacement. During the pushing process, the end of the clamp seat 42 first contacts the arc-shaped end face of the insert block 46, pushing the insert block 46 to retract into the mounting base 41, and the return spring 48 is compressed. When the clamp seat 42 is fully pushed into place, the insert block 46 pops out under the action of the return spring 48 and inserts into the slot on the side of the clamp seat 42. The rectangular groove 49 and the round hole 410 on the insert block 46 enhance the positioning stability and prevent the clamp seat 42 from swaying laterally or falling off. At the same time, during the pushing process, the clamp seat 42 will squeeze the push rod 55 in the adsorption positioning assembly 5, pushing the piston plate 53 in the piston cavity. The piston moves within 52, compressing the second return spring 54, causing air in the piston chamber 52 to be discharged through the air guide pipe 56. After the clamp seat 42 is installed in place, the suction cup 58 fits against the side wall of the clamp seat 42, and the piston plate 53 is reset under the action of the second return spring 54. The air between the suction cup 58 and the clamp seat 42 is drawn through the air guide pipe 56, forming a negative pressure adsorption, which further enhances the installation stability of the clamp seat 42. When clamping the workpiece, the cylinder 3 is activated to push a set of replaceable clamping modules 4 to move to another set, so that the two sets of clamping plates 43 clamp the workpiece together. At this time, the arc plate 62 in the anti-pressure component 6 can be screwed into the arc groove 61 of the other set of clamping plates 43 to form a vertical anti-pressure connection structure, which improves the load-bearing capacity and anti-deformation performance of the clamp for the workpiece, and ensures the stability and safety of the clamp during the processing.

[0037] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. A quick-change clamp tooling, comprising a workbench (1), a machining cavity (2) is formed in the inner wall of the workbench (1), and a pneumatic cylinder (3) is fixedly installed on the upper surface of the workbench (1), characterized in that: The upper surface of the workbench (1) is provided with replaceable clamping modules (4); Among them, the replaceable clamping module (4) includes a mounting seat (41), the mounting seat (41) is fixedly installed on the upper surface of the workbench (1), the inner wall of the mounting seat (41) is detachably installed with a clamp seat (42), the clamp seat (42) is fixedly installed with a clamping plate (43) on the outer wall of the side close to the processing cavity (2), the lower surface of the clamp seat (42) is fixedly installed with a T-shaped strip (44), the bottom upper surface of the mounting seat (41) is provided with a T-shaped groove (45), the side inner wall of the mounting seat (41) is through and slidingly installed with an insertion block (46), the outer wall of the side of the insertion block (46) away from the center of the workbench (1) is fixedly installed with a connecting block (47), the side wall of the connecting block (47) and the inner wall of the mounting seat (41) are fixedly connected with a reset spring (48), the side wall of the insertion block (46) is provided with a rectangular groove (49), and the center of the insertion block (46) is provided with a circular hole (410).

2. The tooling of claim 1, wherein: The number of replaceable clamping modules (4) is two groups, one group of replaceable clamping modules (4) is fixedly connected with the upper surface of the workbench (1), and the other group of replaceable clamping modules (4) is fixedly connected with the output end of the air cylinder (3), and the bottom of the mounting seat (41) of the group is provided with a protrusion, and the upper surface of the workbench (1) is provided with a sliding groove matched with the protrusion.

3. The tooling of claim 1 wherein: The T-shaped groove (45) and the T-shaped strip (44) are in sliding fit, and the bottom and the side of the clamp seat (42) are provided with T-shaped strips (44).

4. The tooling of claim 1 wherein: The inner wall of the side close to the mounting seat (41) of the clamp seat (42) is provided with an insertion slot matched with the insertion block (46) in size, and the number of the connecting block (47) is two groups, the two groups of connecting blocks (47) are symmetrically arranged with the vertical central axis of the insertion block (46) as the axis of symmetry, and the inner wall of the side of the mounting seat (41) is provided with a contraction groove for accommodating the insertion block (46), and the end of the contraction groove is provided with a cavity matched with the connecting block (47) in size.

5. The tooling of claim 1 wherein: The number of the insertion block (46) is two groups, and the two groups of insertion blocks (46) are centrally symmetrically arranged with the center of the side of the mounting seat (41) as the center.

6. The tooling of claim 1 wherein: The inside of the mounting seat (41) is provided with an adsorption positioning assembly (5), the adsorption positioning assembly (5) comprises a suction seat (51), the suction seat (51) is fixedly installed on the end outer wall of the mounting seat (41), the inner wall of the suction seat (51) is provided with a piston cavity (52), the inner surface of the piston cavity (52) is slidably installed with a piston plate (53), the side wall of the piston plate (53) and the inner wall of the piston cavity (52) are fixedly connected with a reset spring two (54), the outer wall of the side, away from the reset spring two (54), of the piston plate (53) is fixedly installed with a push rod (55), the inner wall of the mounting seat (41) is fixedly installed with a gas guide pipe (56), the side inner wall of the mounting seat (41) is fixedly installed with a fixed block (57), the end of the fixed block (57) is fixedly installed with a suction disc (58).

7. The tooling of claim 6 wherein: The number of the fixed block (57) and the suction disc (58) is three, and the three fixed blocks (57) and the suction disc (58) are distributed in an inverted isosceles triangle on the side wall of the mounting seat (41).

8. The tooling of claim 1 wherein: The clamp seat (42) is provided with a compression resistance assembly (6) near the side of the machining cavity (2), the compression resistance assembly (6) comprises an arc-shaped groove (61), the arc-shaped groove (61) is arranged on the inner wall of the clamping plate (43), and the inner surface of the arc-shaped groove (61) is slidably installed with an arc-shaped plate (62).

9. The tooling of claim 8, wherein: The clamping plate (43), the arc-shaped groove (61) and the arc-shaped plate (62) are all arranged in a circular arc shape.

Images