A clamp for precision machining of metal parts

Abstract

The utility model relates to metal part precision machining technical field discloses a kind of clamps for metal part precision machining, including mounting plate;Rotary assembly is set in the left and right sides of mounting plate, the rotary assembly is used to rotary mounting plate;Side pressure assembly is set in the top of mounting plate, the side pressure assembly is used to from side face tight metal parts, by rotary connecting shaft drive mount three rotations, and further switch corresponding jack, can better with metal parts bottom contact, by supporting cylinder one drive mount two lifting, and further drive connecting shaft lifting, so that connecting shaft drive mount three lifting, and further drive jack lifting, so that jack can prop up metal parts, by rotary connecting shaft drive mount three rotations, and further switch corresponding jack, can better with metal parts bottom contact, can better ensure the support effect to metal parts.

Description

Technical Field

[0001] This utility model relates to the field of precision machining technology for metal parts, specifically a fixture for precision machining of metal parts. Background Technology

[0002] In the field of precision machining of metal parts, fixtures are core components that ensure machining accuracy, and their clamping stability directly affects the final machining quality of the parts. Currently, commonly used metal parts machining fixtures on the market mainly include three-jaw chucks, flat-jaw vises, and vacuum chucks. Three-jaw chucks are suitable for cylindrical parts with regular outer diameters. They achieve clamping by moving the three jaws radially in sync. However, for parts with uneven or irregular curved surfaces on their outer surfaces, they cannot form a fully fitted clamping surface, which can easily lead to uneven local force distribution and cause radial displacement of the parts during the machining process. Flat-jaw pliers rely on flat clamping surfaces and can only fix parts with flat clamping surfaces. For parts with irregular outer surfaces, they cannot find a stable clamping reference, which can easily lead to loosening or positional displacement. Although vacuum suction cups can adapt to some irregular surfaces, they are limited by the material of the parts (such as non-magnetic or porous parts that cannot be effectively adsorbed) and surface roughness (rough surfaces are difficult to form a sealed vacuum environment), and the adsorption force is easily affected by processing vibrations, resulting in insufficient stability. For metal parts with unique shapes and irregular outer surfaces (such as irregularly shaped connectors and complex curved surface structures), existing fixtures generally suffer from problems such as "poor adaptability of clamping surfaces, uneven force distribution, and weak anti-deviation ability," which leads to reduced machining accuracy and even scrap. There is an urgent need for a precision machining fixture that can adaptively fit irregular surfaces and achieve stable clamping. Utility Model Content

[0003] The purpose of this utility model is to provide a fixture for precision machining of metal parts, so as to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a fixture for precision machining of metal parts, including a mounting plate; Rotating components are disposed on the left and right sides of the mounting plate, the rotating components being used to rotate the mounting plate; A side clamping assembly is disposed on the top of the mounting plate, the side clamping assembly being used to clamp the metal parts from the side; A bottom support assembly is provided on the top of the mounting plate, and four bottom support assemblies are provided to support the metal parts from the bottom. A side support assembly is provided on the top of the mounting plate, which limits the metal parts from the side.

[0005] Furthermore, the bottom support assembly includes a support cylinder one, which is fixedly installed on the top of the mounting plate. A mounting base two is fixedly installed on the lifting end of the support cylinder one. A connecting shaft is rotatably connected inside the mounting base two. A fixing component for fixing the connecting shaft is detachably installed on the mounting base two. A mounting base three is fixedly installed on the end of the connecting shaft away from the fixing component. Lifting blocks are fixedly installed on the three sides of the mounting base three. The three lifting blocks are a triangular block, a rectangular block, and a trapezoidal block, respectively.

[0006] Furthermore, the fixing component includes a hexagonal groove, a hexagonal block, and a connecting plate. The hexagonal groove is formed on the outside of the mounting base two. The hexagonal block is fixedly sleeved on the outer wall of the connecting shaft and is inserted into the hexagonal groove. The connecting plate is rotatably connected to the connecting shaft through a bearing and is fixedly connected to the mounting base two through bolts.

[0007] Furthermore, the side support assembly includes a mounting base four, on the top of which a support cylinder two is fixedly mounted. The support cylinder two is inclined, and a side support block is fixedly mounted on the telescopic end of the support cylinder two.

[0008] Furthermore, the rotating assembly includes a turntable one, a turntable two, a turntable one, and a turntable two. The turntable one is rotatably connected to the turntable one. Both the turntable one and the turntable two are fixedly mounted with pads by bolts, and the tops of the left and right pads are detachably mounted with adjustment plates by bolts. The mounting plate is detachably mounted with the adjustment plates by bolts.

[0009] Furthermore, the lateral clamping assembly includes a mounting base, which has two sets, front and rear. A clamping cylinder is fixedly mounted on the mounting base, and a clamping head is fixedly mounted on the telescopic end of the clamping cylinder.

[0010] Furthermore, the lateral clamping assembly also includes a second clamping cylinder, which is fixedly installed on the top of the mounting plate, and a clamping plate is fixedly installed on the telescopic end of the second clamping cylinder.

[0011] Furthermore, a pull ring is fixedly installed on the top of the mounting plate, a base plate is fixedly connected to the bottom of the rotating assembly, and a workbench is provided below the base plate. The workbench is detached from the base plate by a T-nut.

[0012] Compared with the prior art, the beneficial effects of this utility model are: 1. By rotating the connecting shaft, the mounting base three rotates, thereby switching the corresponding lifting block, which can better contact the bottom of the metal part. By using the support cylinder one, the mounting base two is raised and lowered, which in turn raises and lowers the connecting shaft, causing the connecting shaft to raise and lower the mounting base three, which in turn raises and lowers the lifting block, allowing the lifting block to support the metal part. By rotating the connecting shaft, the mounting base three rotates, thereby switching the corresponding lifting block, which can better contact the bottom of the metal part, and better ensure the support effect of the metal part. By using the support cylinder two, the position of the side support block is adjusted, so that the side support block can limit the metal part from the side, achieving precise positioning in the left and right directions. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This utility model Figure 1 Structural diagram of the rear view; Figure 3 This utility model Figure 2 A structural schematic diagram from a bottom-view perspective; Figure 4 This is a structural schematic diagram of the mounting plate, side clamping assembly, bottom support assembly, and side brace assembly of this utility model; Figure 5 This is a schematic diagram of the bottom support component of this utility model; Figure 6 This utility model Figure 5 Exploded view of the structure; Figure 7 This is a schematic diagram of the side support component of this utility model.

[0014] In the diagram: 1. Mounting plate; 2. Rotating assembly; 201. Turntable 1; 202. Turntable 2; 203. Turntable 1; 204. Turntable 2; 3. Workbench; 4. Base plate; 5. Side clamping assembly; 501. Mounting seat 1; 502. Clamping cylinder 1; 503. Clamping head; 504. Clamping cylinder 2; 505. Clamping plate; 6. Bottom support assembly; 601. Support cylinder 1; 602. Mounting seat 2; 603. Connecting shaft; 604. Mounting seat 3; 605. Lifting block; 606. Fixing component; 6061. Hexagonal slot; 6062. Hexagonal block; 6063. Connecting plate; 7. Side support assembly; 701. Mounting seat 4; 702. Support cylinder 2; 703. Side support block; 8. Pad block; 9. Adjusting plate; 10. Pull ring. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0016] Please see Figures 1-7 This utility model provides a technical solution: a fixture for precision machining of metal parts, including a mounting plate 1; Rotating components 2 are arranged on the left and right sides of the mounting plate 1. Rotating components 2 are used to rotate the mounting plate 1. A side clamping assembly 5 is provided on the top of the mounting plate 1. The side clamping assembly 5 is used to clamp the metal parts from the side. A bottom support assembly 6 is provided on the top of the mounting plate 1. There are four bottom support assemblies 6, which support the metal parts from the bottom. The side support assembly 7 is installed on the top of the mounting plate 1, and the side support assembly 7 limits the metal parts from the side; The bottom support assembly 6 includes a support cylinder 601, which is fixedly mounted on the top of the mounting plate 1. A mounting base 602 is fixedly mounted on the lifting end of the support cylinder 601. A connecting shaft 603 is rotatably connected inside the mounting base 602. A fixing component 606 for fixing the connecting shaft 603 is detachably mounted on the mounting base 602. A mounting base 604 is fixedly mounted on the end of the connecting shaft 603 away from the fixing component 606. Lifting blocks 605 are fixedly mounted on three sides of the mounting base 604. The three lifting blocks 605 are a triangular block, a rectangular block, and a trapezoidal block, respectively. Rotation of the connecting shaft 603 drives the support cylinder 604 to lift the connecting shaft 603. The mounting base 604 rotates, thereby switching the corresponding lifting block 605, which can better contact the bottom of the metal part. The support cylinder 601 drives the mounting base 602 to rise and fall, which in turn drives the connecting shaft 603 to rise and fall. The connecting shaft 603 drives the mounting base 604 to rise and fall, which in turn drives the lifting block 605 to rise and fall, so that the lifting block 605 can support the metal part. By rotating the connecting shaft 603, the mounting base 604 rotates, thereby switching the corresponding lifting block 605, which can better contact the bottom of the metal part and better ensure the support effect of the metal part. A fixing component 606 is provided to fix the connecting shaft 603. The fixing component 606 includes a hexagonal slot 6061, a hexagonal block 6062, and a connecting plate 6063. The hexagonal slot 6061 is formed on the outside of the mounting base 602. The hexagonal block 6062 is fixedly sleeved on the outer wall of the connecting shaft 603 and is inserted into the hexagonal slot 6061. The connecting plate 6063 is rotatably connected to the connecting shaft 603 through a bearing and is fixedly connected to the mounting base 602 through bolts. The hexagonal slot 6061 and the hexagonal block 6062 are provided to accommodate the rotatable angle of the connecting shaft 603. The hexagonal design of the lifting block 605 allows for six switchable modes (three different shaped lifting blocks 605, and a support structure consisting of adjacent lifting blocks 605, for a total of six modes), thus expanding its applicability. By pulling the connecting shaft 603, the hexagonal block 6062 can be moved to switch between fixed and rotating modes. The connecting plate 6063 is fixed to the mounting base 602, limiting the connecting shaft 603 so that the hexagonal block 6062 can be inserted into the hexagonal slot 6061, thereby preventing the connecting shaft 603 from rotating. The side support assembly 7 includes a mounting base 4 701, on the top of which a support cylinder 2 702 is fixedly mounted. The support cylinder 2 702 is tilted, and a side support block 703 is fixedly mounted on the telescopic end of the support cylinder 2 702. The position of the side support block 703 is adjusted by the support cylinder 2 702 so that the side support block 703 can limit the metal part from the side, achieving precise positioning in the left and right directions. The rotating assembly 2 includes a turntable 1 201, a turntable 202, a turntable 1 203, and a turntable 204. The turntable 1 203 is rotatably connected to the turntable 1 201. Both the turntable 1 203 and the turntable 204 are fixedly mounted with pads 8 by bolts. The tops of the two pads 8 on the left and right sides are detachably mounted with adjusting plates 9 by bolts. The mounting plate 1 is detachably mounted with the adjusting plates 9 by bolts. The pads 8 and adjusting plates 9 are used to adjust the position of the mounting plate 1 relative to the central axis of the turntable 1 203 and the turntable 204 to ensure that the central axis of the mounting plate 1 is parallel to the central axis of the turntable 1 203 and the turntable 204. The side clamping assembly 5 includes a mounting base 501, which has two sets, front and rear. A clamping cylinder 502 is fixedly mounted on the mounting base 501. A clamping head 503 is fixedly mounted on the telescopic end of the clamping cylinder 502. The mounting base 501 is used to mount the clamping cylinder 502. The position of the clamping head 503 is adjusted by the telescopic movement of the two sets of clamping cylinders 502, so that the clamping head 503 is pressed against the front and rear of the metal part to clamp and position the metal part from the front and rear. The side clamping assembly 5 also includes a clamping cylinder 504, which is fixedly installed on the top of the mounting plate 1. A clamping plate 505 is fixedly installed on the telescopic end of the clamping cylinder 504. The clamping plate 505 is raised and lowered by the telescopic movement of the clamping cylinder 504, and the metal parts are clamped from above by the clamping plate 505. A pull ring 10 is fixedly installed on the top of the mounting plate 1, which makes it convenient for workers to replace the mounting plate 1 and also makes it convenient to use hoisting equipment to lift and move the mounting plate 1. The bottom of the rotating component 2 is fixedly connected to the base plate 4, and a workbench 3 is set below the base plate 4. The workbench 3 is detached from the base plate 4 by T-nuts.

[0017] Working principle: In use, first select the corresponding lifting block 605 or the support structure composed of adjacent lifting blocks 605 according to the bottom shape of the metal part. Use a tool to unscrew the bolts fixing the connecting plate 6063. Then pull the connecting plate 6063 to move the connecting shaft 603, which in turn moves the hexagonal block 6062, causing it to disengage from the hexagonal slot 6061. Rotate the connecting shaft 603 to rotate the mounting base 604, which is used to switch the lifting block 605 or the support structure composed of adjacent lifting blocks 605. Push the connecting plate 6063 to move the connecting shaft 603, which in turn moves the hexagonal block 6062 into the hexagonal slot 6061. Tighten the bolts fixing the connecting plate 6063. Then, the metal part is placed on the bottom support assembly 6. The support cylinder 601 drives the mounting base 602 to rise and fall, which in turn drives the connecting shaft 603 to rise and fall. The connecting shaft 603 drives the mounting base 604 to rise and fall, which in turn drives the lifting block 605 to rise and fall. This allows the lifting block 605 to adjust the height of the metal part, so that the side clamping assembly 5 can better clamp the metal part laterally. The support cylinder 702 adjusts the position of the side support block 703, so that the side support block 703 can limit the metal part from the side, achieving precise positioning in the left and right directions. The clamping cylinder 504 extends and retracts, driving the clamping plate 505 to rise and fall, and the clamping plate 505 clamps the metal part from above.

[0018] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

Claims

1. A fixture for precision machining of metal parts, characterized in that: Including mounting plate (1); Rotating components (2) are provided on the left and right sides of the mounting plate (1), and the rotating components (2) are used to rotate the mounting plate (1). A side clamping assembly (5) is provided on the top of the mounting plate (1), the side clamping assembly (5) being used to clamp the metal parts from the side; A bottom support assembly (6) is provided on the top of the mounting plate (1), and four bottom support assemblies (6) are provided to support metal parts from the bottom; A side support assembly (7) is provided on the top of the mounting plate (1), which limits the metal parts from the side.

2. The fixture for precision machining of metal parts according to claim 1, characterized in that: The bottom support assembly (6) includes a support cylinder (601), which is fixedly installed on the top of the mounting plate (1). The lifting end of the support cylinder (601) is fixedly installed with a mounting seat (602). A connecting shaft (603) is rotatably connected inside the mounting seat (602). A fixing component (606) for fixing the connecting shaft (603) is detachably installed on the mounting seat (602). A mounting seat (604) is fixedly installed at the end of the connecting shaft (603) away from the fixing component (606). Lifting blocks (605) are fixedly installed on the three sides of the mounting seat (604). The three lifting blocks (605) are triangular blocks, rectangular blocks, and trapezoidal blocks, respectively.

3. A fixture for precision machining of metal parts according to claim 2, characterized in that: The fixing component (606) includes a hexagonal groove (6061), a hexagonal block (6062), and a connecting plate (6063). The hexagonal groove (6061) is formed on the outside of the mounting base (602). The hexagonal block (6062) is fixedly sleeved on the outer wall of the connecting shaft (603) and is inserted into the hexagonal groove (6061). The connecting plate (6063) is rotatably connected to the connecting shaft (603) through a bearing. The connecting plate (6063) is fixedly connected to the mounting base (602) through bolts.

4. A fixture for precision machining of metal parts according to claim 1, characterized in that: The side support assembly (7) includes a mounting base four (701), on the top of the mounting base four (701) a support cylinder two (702) is fixedly installed, the support cylinder two (702) is inclined, and the telescopic end of the support cylinder two (702) is fixedly installed with a side support block (703).

5. A fixture for precision machining of metal parts according to claim 1, characterized in that: The rotating assembly (2) includes a turntable one (201), a turntable two (202), a turntable one (203), and a turntable two (204). The turntable one (203) is rotatably connected to the turntable one (201). Both the turntable one (203) and the turntable two (204) are fixedly installed with pads (8) by bolts. The tops of the two pads (8) are detached and installed with adjustment plates (9) by bolts. The mounting plate (1) is detached and installed with the adjustment plates (9) by bolts.

6. A fixture for precision machining of metal parts according to claim 1, characterized in that: The side clamping assembly (5) includes a mounting base (501), which is provided with two sets, front and rear. A clamping cylinder (502) is fixedly installed on the mounting base (501), and a clamping head (503) is fixedly installed on the telescopic end of the clamping cylinder (502).

7. A fixture for precision machining of metal parts according to claim 6, characterized in that: The side clamping assembly (5) also includes a clamping cylinder two (504), which is fixedly installed on the top of the mounting plate (1), and a clamping plate (505) is fixedly installed on the telescopic end of the clamping cylinder two (504).

8. A fixture for precision machining of metal parts according to claim 1, characterized in that: A pull ring (10) is fixedly installed on the top of the mounting plate (1), and a base plate (4) is fixedly connected to the bottom of the rotating assembly (2). A workbench (3) is provided below the base plate (4), and the workbench (3) is detached from the base plate (4) by means of a T-nut.

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