Multi-face rectangular workpiece clamping fixture suitable for four-axis machining

Abstract

The utility model discloses a multi-face rectangular workpiece clamping fixture suitable for four-axis machining, and relates to the technical field of tool fixtures, the multi-face rectangular workpiece clamping fixture comprises a working bottom plate, a rotating mechanism tailstock is installed on the left side of the top end of the working bottom plate, and a four-axis rotating mechanism is installed on the right side of the top end of the working bottom plate; and butt joint mounting plates are movably mounted on the right side of the rotating mechanism tailstock and the left side of the four-axis rotating mechanism. The clamp is only suitable for rectangular workpieces, secondary clamping is reduced, machining precision and efficiency are improved, the positioning blocks are distributed on the clamp main plate and used for positioning and separating the workpieces, the main body is designed to be hollowed out so as to reduce the weight, expandability is achieved, the four faces are provided with a plurality of through holes, positioning pin holes and screw holes, and machining precision is improved. And clamp main plates of different models can be mounted on each surface to adapt to clamping of various rectangular workpieces.

Description

Technical Field

[0001] This utility model relates to the field of tooling and fixture technology, specifically a multi-faceted rectangular workpiece clamping fixture suitable for four-axis machining. Background Technology

[0002] Currently, most existing machining fixtures are single-sided clamping fixtures, which cannot perform machining on multiple sides in a single clamping. They require frequent disassembly and repositioning, affecting machining efficiency and accuracy. This is especially true in four-axis machining centers, where traditional fixtures struggle to meet the requirements for efficient clamping and stable fixation due to changes in machining angles. Utility Model Content

[0003] The purpose of this invention is to provide a multi-faceted rectangular workpiece clamping fixture suitable for four-axis machining, 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 multi-faceted rectangular workpiece clamping fixture suitable for four-axis machining, comprising a working base plate, a rotating mechanism tailstock mounted on the top left of the working base plate, a four-axis rotating mechanism mounted on the top right of the working base plate, and docking mounting plates movably mounted on the right side of the rotating mechanism tailstock and the left side of the four-axis rotating mechanism. A fixture body is movably mounted on opposite ends of both docking mounting plates. A fixture main plate is mounted on the front and rear sides of the fixture body. Clamping mechanisms are mounted on both ends of the fixture main plate on the side away from the fixture body. Several positioning plates are mounted on the outside of the fixture body at positions relative to the fixture main plate.

[0005] Preferably, both ends of the fixture body are equipped with mounting connectors, the end of the mounting connector away from the fixture body is connected to the docking mounting plate, and a main body fixing block is installed between the mounting connector and the docking mounting plate.

[0006] Preferably, a plurality of positioning blocks are equidistantly installed on the side of the fixture main board away from the fixture body. The positioning blocks and the outside of the fixture main board are provided with mounting screw holes, and mounting screws are screwed into the mounting screw holes.

[0007] Preferably, the main body of the clamp has two mating round openings on both ends of the side away from the clamp body, and the clamp body is equipped with positioning pins at the relative positions of the mating round openings, the positioning pins passing through the inside of the mating round openings.

[0008] Preferably, the clamping mechanism includes a trapezoidal pressure block, a U-shaped expansion pressure plate, a trapezoidal pressure block clamping screw, and a clamping screw limiting spring. The main body of the clamp has mating recesses at both ends on the side away from the clamp body, and the inner cavity of the mating recess has two mating ports. The outside of the clamp body has mating screws at relative positions to the mating ports. The trapezoidal pressure block clamping screw passes through the mating ports and connects with the mating screws.

[0009] Preferably, a U-shaped expansion plate is installed at the end of the trapezoidal pressure block clamping screw away from the mating screw hole, and a trapezoidal pressure block is movably installed at the end of the trapezoidal pressure block clamping screw away from the mating screw hole.

[0010] Compared with the prior art, the beneficial effects of this utility model are:

[0011] This utility model achieves workpiece clamping through the cooperation of a trapezoidal pressure block and a U-shaped expanding pressure plate. The inclined surface of the trapezoidal pressure block is in contact with the inner inclined surface of the U-shaped expanding pressure plate. When the screw is tightened, the U-shaped expanding pressure plate expands outward to achieve stable clamping.

[0012] This utility model fixture is only applicable to rectangular workpieces, reducing secondary clamping and improving machining accuracy and efficiency. The main body of the fixture has positioning blocks distributed on it for positioning and separating the workpiece. The main body has a hollow design to reduce weight and is expandable. Each of the four sides has multiple through holes, positioning pin holes and screw holes. Different models of fixture main bodies can be installed on each side to adapt to the clamping of various rectangular workpieces. Attached Figure Description

[0013] Figure 1 A schematic diagram of the overall structure is provided for the embodiments of this utility model;

[0014] Figure 2 A three-dimensional structural diagram of the clamp body provided in the embodiment of this utility model;

[0015] Figure 3 An exploded view of the fixture body provided in an embodiment of this utility model.

[0016] In the diagram: 1. Mounting connector; 2. Fixture body; 3. Fixture main board; 4. Positioning block; 5. Clamping mechanism; 501. Trapezoidal pressure block; 502. U-shaped expansion pressure plate; 503. Trapezoidal pressure block clamping screw; 504. Clamping screw limit circlip; 6. Positioning plate; 7. Positioning pin; 8. Working base plate; 9. Four-axis rotation mechanism; 10. Rotation mechanism tailstock; 11. Docking mounting plate; 12. Main body fixing pressure block. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Please see Figure 1-3 This utility model provides a technical solution: a multi-faceted rectangular workpiece clamping fixture suitable for four-axis machining, including a working base plate 8, a rotating mechanism tailstock 10 installed on the top left of the working base plate 8, a four-axis rotating mechanism 9 installed on the top right of the working base plate 8, docking mounting plates 11 movably installed on the right side of the rotating mechanism tailstock 10 and the left side of the four-axis rotating mechanism 9, a fixture body 2 movably installed on one end of each of the two docking mounting plates 11, a fixture main plate 3 installed on the front and rear sides of the fixture body 2, clamping mechanisms 5 installed at both ends of the side of the fixture main plate 3 away from the fixture body 2, and several positioning plates 6 installed on the outside of the fixture body 2 at the relative positions of the fixture main plate 3. The fixture body 2 has a hollow structure, and several through holes, pin holes and screw holes are opened around the outside of the fixture body 2.

[0019] Both ends of the fixture body 2 are equipped with mounting connectors 1. The end of the mounting connector 1 away from the fixture body 2 is connected to the docking mounting plate 11. A main body fixing block 12 is installed between the mounting connector 1 and the docking mounting plate 11.

[0020] The specific implementation method is as follows: the main body for mounting the fixture main board 3 and the fourth axis is fixed by four main bodies 12. The main body is hollowed out to reduce weight and has expandability. Each of the four sides is provided with multiple through holes, positioning pin holes and screw holes. Each side can be equipped with different models of fixture main boards 3 to adapt to the clamping of various rectangular workpieces.

[0021] A number of positioning blocks 4 are equidistantly installed on the side of the clamp main board 3 away from the clamp body 2. The positioning blocks 4 and the outside of the clamp main board 3 are provided with mounting screw holes, and mounting screws are screwed into the mounting screw holes.

[0022] The specific implementation method is as follows: When installing the positioning block 4 to the outside of the fixture main board 3, first move the positioning block 4 to the outside of the fixture main board 3, and then fix the positioning block 4 by passing the screw rod through the screw hole. It is used for positioning the workpiece. Different sizes of positioning blocks 4 can be replaced to adapt to the clamping of workpieces of different specifications.

[0023] The clamp main board 3 has two mating round openings on both ends of the side away from the clamp body 2, and the clamp body 2 is equipped with positioning pins 7 at the relative positions of the mating round openings. The positioning pins 7 pass through the inside of the mating round openings.

[0024] The specific implementation method is as follows: When the fixture main board 3 is installed on the outside of the fixture body 2, the positioning pin 7 passes through the docking round opening, and the fixture main board 3 is installed on the outside of the fixture body 2, making the operation faster.

[0025] The clamping mechanism 5 includes a trapezoidal pressure block 501, a U-shaped expansion pressure plate 502, a trapezoidal pressure block clamping screw 503, and a clamping screw limiting spring 504. The clamping main plate 3 has mating recesses at both ends on the side away from the clamping body 2, and two mating ports are opened in the inner cavity of the mating recesses. The clamping body 2 has mating screws at the relative positions of the mating ports on the outside. The trapezoidal pressure block clamping screw 503 passes through the mating port and connects with the mating screw.

[0026] A U-shaped expansion plate 502 is installed on the end of the trapezoidal pressure block clamping screw 503 away from the mating screw hole, and a trapezoidal pressure block 501 is movably installed on the end of the trapezoidal pressure block clamping screw 503 away from the mating screw hole;

[0027] The specific implementation method is as follows: A reliable clamping state is formed by the inclined surfaces of the trapezoidal pressure block 501 and the U-shaped expansion pressure plate 502. The trapezoidal pressure block clamping screw 503 passes through the trapezoidal pressure block 501 and the U-shaped expansion pressure plate 502. Tightening the trapezoidal pressure block clamping screw 503 causes the U-shaped expansion pressure plate 502 to expand outward, applying a uniform clamping force. After the screw is tightened, the workpiece is stably fixed. The U-shaped expansion pressure plate 502 is installed in the mating recess of the main plate 3 of the fixture, responsible for expansion... The tensioning part protrudes outward so that the U-shaped expansion plate 502 can expand outward when the trapezoidal pressure block 501 is pressed down. A retaining spring groove is provided below the trapezoidal pressure block clamping screw 503 of the trapezoidal pressure block 501, and a clamping screw limit retaining spring 504 is installed to prevent the trapezoidal pressure block clamping screw 503 from coming off. At the same time, when the clamp is released, the clamping screw limit retaining spring 504 can drag the trapezoidal pressure block 501 back to its original position to prevent the trapezoidal pressure block 501 and the U-shaped expansion plate 502 from getting stuck.

[0028] Working principle: This utility model is used to install the main clamping plate 3 and connect the fourth axis. It is fixed by four main bodies 12. The main body is hollowed out to reduce weight and has expandability. Each of the four sides is provided with multiple through holes, positioning pin holes and screw holes. Each side can be equipped with different models of main clamping plates 3 to adapt to the clamping of various rectangular workpieces.

[0029] The trapezoidal clamping block 501 and the U-shaped expanding clamping plate 502 cooperate on their inclined surfaces to form a reliable clamping state. The trapezoidal clamping block clamping screw 503 passes through the trapezoidal clamping block 501 and the U-shaped expanding clamping plate 502. Tightening the trapezoidal clamping block clamping screw 503 causes the U-shaped expanding clamping plate 502 to expand outward, applying a uniform clamping force. After the screw is tightened, the workpiece is stably fixed. The U-shaped expanding clamping plate 502 is installed in the mating recess of the main plate 3 of the fixture and is responsible for expansion and clamping. Part of it protrudes outward so that the U-shaped expansion plate 502 can expand outward when the trapezoidal pressure block 501 is pressed down. A retaining spring groove is provided below the trapezoidal pressure block clamping screw 503 of the trapezoidal pressure block 501, and a clamping screw limit retaining spring 504 is installed to prevent the trapezoidal pressure block clamping screw 503 from coming off. At the same time, when the clamp is released, the clamping screw limit retaining spring 504 can drag the trapezoidal pressure block 501 back to its original position to prevent the trapezoidal pressure block 501 and the U-shaped expansion plate 502 from getting stuck.

[0030] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A multi-faceted rectangular workpiece clamping fixture suitable for four-axis machining, comprising a working base plate (8), characterized in that: A rotating mechanism tailstock (10) is installed on the top left of the working base plate (8), and a four-axis rotating mechanism (9) is installed on the top right of the working base plate (8). A docking mounting plate (11) is movably installed on the right side of the rotating mechanism tailstock (10) and the left side of the four-axis rotating mechanism (9). A clamp body (2) is movably installed on one end of each docking mounting plate (11) on both sides. A clamp main plate (3) is installed on the front and rear sides of the clamp body (2). A clamping mechanism (5) is installed on both ends of the clamp main plate (3) on the side away from the clamp body (2). Several positioning plates (6) are installed on the outside of the clamp body (2) at the relative position of the clamp main plate (3). The clamp body (2) has a hollow structure. Several through holes, pin holes and screw holes are opened around the outside of the clamp body (2).

2. The multi-faceted rectangular workpiece clamping fixture suitable for four-axis machining according to claim 1, characterized in that: The fixture body (2) is equipped with mounting connectors (1) at both ends. The end of the mounting connector (1) away from the fixture body (2) is connected to the docking mounting plate (11). A main body fixing block (12) is installed between the mounting connector (1) and the docking mounting plate (11).

3. A multi-faceted rectangular workpiece clamping fixture suitable for four-axis machining according to claim 1, characterized in that: The fixture main board (3) has several positioning blocks (4) installed at equal intervals on the side away from the fixture body (2). The positioning blocks (4) and the fixture main board (3) are provided with mounting screw holes in the middle and on the outside of the mounting screw holes, and mounting screws are installed inside the mounting screw holes.

4. A multi-faceted rectangular workpiece clamping fixture suitable for four-axis machining according to claim 1, characterized in that: The clamp main board (3) has two mating round openings on both sides away from the clamp body (2), and the clamp body (2) is equipped with positioning pins (7) at the relative positions of the mating round openings. The positioning pins (7) pass through the inside of the mating round openings.

5. A multi-faceted rectangular workpiece clamping fixture suitable for four-axis machining according to claim 1, characterized in that: The clamping mechanism (5) includes a trapezoidal pressure block (501), a U-shaped expansion pressure plate (502), a trapezoidal pressure block clamping screw (503), and a clamping screw limiting spring (504). The clamping main board (3) has two mating recesses on both ends of the side away from the clamping body (2), and two mating ports are opened in the inner cavity of the mating recesses. The clamping body (2) has mating screws at the relative positions of the mating ports on the outside. The trapezoidal pressure block clamping screw (503) passes through the mating port and connects with the mating screw.

6. A multi-faceted rectangular workpiece clamping fixture suitable for four-axis machining according to claim 5, characterized in that: The trapezoidal clamping screw (503) is equipped with a U-shaped expansion plate (502) at the end away from the mating screw hole, and a trapezoidal clamping block (501) is movably installed at the end away from the mating screw hole.

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