Highly-integrated four-axis machining clamp

Abstract

The utility model discloses a highly integrated four-axis machining clamp which comprises a machining clamp base, a fitting plate is installed on the machining clamp base, first clamp assemblies are arranged on the outer walls of the two sides of the machining clamp base, and second clamp assemblies are further arranged on the outer walls of the two sides of the machining clamp base. An integrated workpiece is placed on the machining clamp base and installed and fixed through an attaching plate, a first clamp assembly and a second clamp assembly. The two first clamp assemblies are symmetrically arranged on the two sides of the base, each first clamp assembly clamps the middle positions of the two sides of the workpiece and is matched with the bottom attaching plate to form a stable three-point positioning structure, clamping force evenly acts on the two sides of the gravity center of the workpiece through the design, and local stress concentration caused by torque deviation in traditional four-corner fixing is avoided.

Description

Technical Field

[0001] This utility model relates to the field of workpiece fixture technology, and in particular to a highly integrated four-axis machining fixture. Background Technology

[0002] A highly integrated four-axis machining fixture is a workpiece clamping device designed specifically for four-axis CNC machining centers. Its core feature is that it can precisely clamp and fix the four corners of the workpiece by bolt fastening, while also having the characteristics of compact structure and high functional integration.

[0003] While existing highly integrated four-axis machining fixtures have the advantages of compact structure and high functional integration, they still have certain drawbacks in terms of clamping and fixing firmness. Traditional four-axis fixtures usually fix the four corners of the workpiece with four bolts respectively. Although this fixing method is simple, it is prone to uneven distribution of clamping force, which can cause slight displacement or deformation of the workpiece during machining, affecting machining accuracy and surface quality. Because the fixing method is singular and relies on the tightening force of the bolts, the workpiece may loosen at the contact surface between the fixture and the workpiece due to factors such as vibration and thermal expansion during long-term machining, causing the workpiece to shift or become unstable, affecting the stability of the machining process. Utility Model Content

[0004] To overcome the shortcomings of the existing technology, this utility model provides a highly integrated four-axis machining fixture. The device has two sets of first clamping components symmetrically arranged on both sides of the base. Each set clamps the middle position of both sides of the workpiece and forms a stable three-point positioning structure with the bottom bonding plate. This design makes the clamping force evenly applied to both sides of the center of gravity of the workpiece, avoiding the local stress concentration caused by torque deviation due to the traditional four-corner fixing.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a highly integrated four-axis machining fixture, including a machining fixture base, a bonding plate installed on the machining fixture base, first clamping assemblies provided on the outer walls of both sides of the machining fixture base, and second clamping assemblies also provided on the outer walls of both sides of the machining fixture base. An integrated workpiece is placed on the machining fixture base, and the integrated workpiece is installed and fixed by the bonding plate, the first clamping assemblies, and the second clamping assemblies.

[0006] As a preferred technical solution of this utility model, the first clamping assembly includes a fixing plate installed on the side wall of the processing clamping base, a bolt rod threadedly connected in the fixing plate, a clamping plate installed on the outer wall of the inner end of the bolt rod, and a rotating cap fixedly installed on the outer end wall of the bolt rod.

[0007] As a preferred technical solution of this utility model, the first clamping assembly is symmetrically arranged in two sets, and each set of the first clamping assembly clamps and fixes the middle position of both sides of the integrated workpiece.

[0008] As a preferred embodiment of this utility model, a rubber pad is glued to the inner end of the clamping plate, and an anti-slip texture is provided on the outer wall of the rotating cap.

[0009] As a preferred embodiment of the present invention, the second clamping assembly includes a movable cavity mounted on the outer wall of the processing clamping base, a return spring disposed in the movable cavity, a movable rod inserted into the movable cavity and connected to the return spring, a locking plate mounted on the outer wall of the top end of the movable rod, and a pull ring fixed on the outer wall of the top end of the locking plate.

[0010] In a preferred embodiment of this utility model, one end of the reset spring is connected to the inner wall of the movable cavity, and the other end of the reset spring is connected to the movable rod, which is slidably connected within the movable cavity.

[0011] As a preferred embodiment of this utility model, a rubber pad is glued to the bottom end of the locking plate, and the pull ring is installed at the middle position of the upper end of the locking plate. The outer wall of the pull ring is provided with anti-slip texture.

[0012] Compared with the prior art, the beneficial effects that this utility model can achieve are:

[0013] 1. Existing fixtures, which are fixed by four corner bolts, are prone to uneven force distribution. However, this device has two sets of first fixture components symmetrically arranged on both sides of the base. Each set clamps the middle position of both sides of the workpiece. Together with the bottom bonding plate, they form a stable three-point positioning structure. This design allows the clamping force to be evenly applied to both sides of the workpiece's center of gravity, avoiding local stress concentration caused by torque deviation due to traditional four-corner fixing. This ensures that the workpiece is subjected to balanced force during processing, fundamentally reducing the small displacements or deformations caused by uneven clamping force, and significantly improving processing accuracy.

[0014] 2. The rotating cap of the first clamping assembly has anti-slip texture, which makes it easy for operators to accurately control the clamping force and avoid over-clamping or under-clamping; the threaded drive structure can flexibly adjust the pressure according to the workpiece material (such as aluminum alloy, plastic) to adapt to different processing needs.

[0015] 3. Automatic elastic reset: The second clamping assembly achieves rapid lifting and lowering of the clamping plate by pulling the pull ring. After release, the spring automatically resets and presses the top of the workpiece, eliminating the need for additional locking steps. This collaborative working mode of "manual side positioning + automatic top locking" not only ensures positioning accuracy but also compensates for the rigidity defects of single bolt fixing through elastic clamping, improving clamping reliability under complex working conditions. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0017] Figure 2 This is a front view schematic diagram of the structure of this utility model;

[0018] Figure 3 This is a top view schematic diagram of the structure of this utility model;

[0019] Figure 4 This is a frontal cross-sectional view of a partial structure of the second clamping assembly of this utility model;

[0020] Figure 5 This is a three-dimensional schematic diagram of a partial structure of the first clamping assembly and the second clamping assembly of this utility model.

[0021] The components are labeled as follows: 1. Machining fixture base; 2. Adhesive plate; 3. First fixture assembly; 31. Fixing plate; 32. Bolt rod; 33. Clamping plate; 34. Rotating cap; 4. Second fixture assembly; 41. Movable cavity; 42. Return spring; 43. Movable rod; 44. Clamping plate; 45. Pull ring; 5. Integrated workpiece. Detailed Implementation

[0022] To make the technical means, creative features, and achieved objectives and effects of this utility model easier to understand, the present utility model is further described below with reference to specific embodiments. However, the following embodiments are merely preferred embodiments of this utility model and not all of them. Other embodiments obtained by those skilled in the art based on the embodiments described herein without creative effort are all within the protection scope of this utility model. Unless otherwise specified, the experimental methods in the following embodiments are conventional methods, and the materials and reagents used in the following embodiments are commercially available unless otherwise specified.

[0023] Example:

[0024] like Figure 1-5 As shown, a highly integrated four-axis machining fixture includes a machining fixture base 1, an adhesive plate 2 mounted on the machining fixture base 1, first fixture assemblies 3 on both outer walls of the machining fixture base 1, and second fixture assemblies 4 on both outer walls of the machining fixture base 1. An integrated workpiece 5 is placed on the machining fixture base 1, and the integrated workpiece 5 is installed and fixed by the adhesive plate 2, the first fixture assemblies 3, and the second fixture assemblies 4.

[0025] The first fixture assembly 3 includes a fixing plate 31 mounted on the side wall of the machining fixture base 1, a bolt rod 32 threadedly connected to the fixing plate 31, a clamping plate 33 mounted on the outer wall of the inner end of the bolt rod 32, and a rotating cap 34 fixedly mounted on the outer end wall of the bolt rod 32.

[0026] When the user fixes the integrated workpiece 5, first attach the integrated workpiece 5 to the bonding plate 2 and then rotate the rotating cap 34, so that the rotating cap 34 drives the bolt rod 32 to rotate. The bolt rod 32 and the fixing plate 31 cooperate to rotate inward, thereby driving the clamping plate 33 to clamp the side wall of the integrated workpiece 5. When both clamping plates 33 on both sides are clamped to the side walls of the integrated workpiece 5, a fixation is formed.

[0027] It is worth noting that there are two sets of first clamping components 3 symmetrically arranged. Each set of first clamping components 3 clamps and fixes the middle position of both sides of the integrated workpiece 5. By clamping the middle position of both sides, the clamping force passes through the center of gravity of the workpiece, offsetting the torque generated by the cutting force during the processing, and preventing the workpiece from rotating or displacing.

[0028] The inner end of the clamping plate 33 is glued with a rubber pad, and the outer wall of the rotating cap 34 is provided with anti-slip texture. The elastic deformation of the rubber pad absorbs the clamping pressure and plays a buffering and protective role for workpieces made of easily damaged materials such as aluminum alloy and plastic. This meets the requirements of high-precision machining for the surface quality of the workpiece. The anti-slip texture increases the contact friction between the hand and the rotating cap, so that torque can still be easily applied even when wearing gloves or when the hands are sweaty, avoiding insufficient clamping force due to slippage.

[0029] The second clamping assembly 4 includes a movable cavity 41 installed on the outer wall of the machining clamping base 1, a return spring 42 disposed in the movable cavity 41, a movable rod 43 inserted into the movable cavity 41 and connected to the return spring 42, a locking plate 44 installed on the outer wall of the top end of the movable rod 43, and a pull ring 45 fixed on the outer wall of the top end of the locking plate 44.

[0030] Before the user clamps the side wall of the integrated workpiece 5 through the first clamping assembly 3, the user needs to pull the pull ring 45 upwards. This causes the pull ring 45 to move the locking plate 44 upwards. The locking plate 44 then moves the movable rod 43 upwards within the movable cavity 41. During this sliding process, the stretching return spring 42 deforms. After the user clamps the two side walls of the integrated workpiece 5 through the first clamping assembly 3, the user loosens the pull ring 45. At this time, the elasticity of the return spring 42 generates a restoring force that pulls the movable rod 43 back to its original position. The movable rod 43 then moves the locking plate 44 back to its original position to clamp the top outer wall of the integrated workpiece 5. This process continues until all four sets of locking plates 44 clamp the top outer wall of the integrated workpiece 5 and fix it in place.

[0031] It is worth noting that one end of the return spring 42 is connected to the inner wall of the movable cavity 41, and the other end of the return spring 42 is connected to the movable rod 43. The movable rod 43 is slidably connected in the movable cavity 41. When the pull ring 45 is pulled, the spring is stretched and the locking plate 44 is raised to facilitate the placement of the workpiece. After being released, the spring returns to its original position and the locking plate 44 automatically presses the top of the workpiece, eliminating the need for additional locking steps and improving clamping efficiency.

[0032] The bottom end of the locking plate 44 is glued with a rubber pad. The pad fits the top plane or curved surface of the workpiece to prevent the metal edge of the locking plate 44 from scratching the workpiece. It is especially suitable for high-precision surfaces. The pull ring 45 is installed at the middle position of the upper end of the locking plate 44. The outer wall of the pull ring 45 is provided with anti-slip texture. The centered position allows the pulling force to be transmitted along the axis of the movable rod 43, avoiding the locking plate 44 from tilting or jamming due to uneven load, and ensuring that the four sets of locking plates 44 rise and fall synchronously.

[0033] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0034] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the utility model as defined by the appended claims and their equivalents.

Claims

1. A highly integrated four-axis machining fixture comprising a machining fixture base (1), characterized in that: A bonding plate (2) is installed on the processing fixture base (1). A first clamping assembly (3) is provided on the outer walls of both sides of the processing fixture base (1). A second clamping assembly (4) is also provided on the outer walls of both sides of the processing fixture base (1). An integrated workpiece (5) is placed on the processing fixture base (1). The integrated workpiece (5) is installed and fixed by the bonding plate (2), the first clamping assembly (3) and the second clamping assembly (4).

2. A highly integrated four-axis machining fixture according to claim 1, characterized in that: The first fixture assembly (3) includes a fixing plate (31) mounted on the side wall of the machining fixture base (1), a bolt rod (32) threadedly connected to the fixing plate (31), a clamping plate (33) mounted on the outer wall of the inner end of the bolt rod (32), and a rotating cap (34) fixedly mounted on the outer wall of the bolt rod (32).

3. A highly integrated four-axis machining fixture according to claim 2, characterized in that: The first clamping assembly (3) is symmetrically arranged in two sets, and each set of the first clamping assembly (3) clamps and fixes the middle position of both sides of the integrated workpiece (5).

4. A highly integrated four-axis machining fixture according to claim 2, characterized in that: The inner end of the clamping plate (33) is glued with a rubber pad, and the outer wall of the rotating cap (34) is provided with anti-slip texture.

5. A highly integrated four-axis machining fixture according to claim 1, characterized in that: The second fixture assembly (4) includes a movable cavity (41) mounted on the outer wall of the machining fixture base (1), a return spring (42) disposed in the movable cavity (41), a movable rod (43) inserted into the movable cavity (41) and connected to the return spring (42), a locking plate (44) mounted on the outer wall of the top end of the movable rod (43), and a pull ring (45) fixed on the outer wall of the top end of the locking plate (44).

6. A highly integrated four-axis machining fixture according to claim 5, characterized in that: One end of the reset spring (42) is connected to the inner wall of the movable cavity (41), and the other end of the reset spring (42) is connected to the movable rod (43), which is slidably connected in the movable cavity (41).

7. A highly integrated four-axis machining fixture according to claim 5, characterized in that: The bottom end of the locking plate (44) is glued with a rubber pad, and the pull ring (45) is installed at the middle position of the upper end of the locking plate (44). The outer wall of the pull ring (45) is provided with anti-slip texture.

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