A surface wire drawing clamp based on CNC machining handle
By designing a wire drawing clamp that includes a base, a drive mechanism, a support mechanism, and a positioning mechanism, the problem of existing clamps being unable to fix arc-shaped handles is solved, achieving stable clamping and surface protection of arc-shaped handles.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- QINGYUAN TITANIUM ALUMINUM
- Filing Date
- 2025-07-30
- Publication Date
- 2026-07-24
AI Technical Summary
The existing clamps have complex and unreasonable structures, making it difficult to effectively fix the arc-shaped handle and easily damaging its surface.
A wire drawing clamp was designed, comprising a base, a drive mechanism, a support mechanism, and a positioning mechanism. The clamping mechanism uses a hydraulic rod and a positioning component to achieve stable clamping of the arc-shaped handle, thus avoiding damage to the surface.
It enables easy fixing of the arc-shaped handle, protects the surface integrity, and is suitable for surface brushing treatment in CNC machining.
Smart Images

Figure CN224544232U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of fixture technology, specifically a surface brushing fixture based on CNC machining handles. Background Technology
[0002] In modern industrial manufacturing, handles serve as crucial functional and decorative components for various equipment, furniture, vehicles, and medical devices. Their surface quality directly impacts the overall texture, lifespan, and market competitiveness of these products. Whether it's cabinet door handles and drawer handles in homes, armrest handles in cars, or operating handles on medical devices, users are placing increasingly higher demands on the smoothness, consistency of texture, and corrosion resistance of their appearance. When applying a brushed finish to the surface of curved handles, the handles need to be secured, which requires the use of clamps.
[0003] The existing clamp structure is relatively complex and the design is unreasonable. When clamping curved handles, the clamp-type clamp is not convenient for fixing and will damage the surface of the curved handle, which has limitations. Utility Model Content
[0004] The purpose of this utility model is to provide a surface brushing fixture based on CNC machining of handles. It has the advantages of simple structure, reasonable design, easy clamping of curved handles, no damage to the surface of curved handles, and practicality, thus solving the problems mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a surface brushing fixture based on CNC machining of handles, comprising a base:
[0006] A drive mechanism for driving a clamp is placed on a base and includes a base. A connecting pipe is provided on the top of the base, and two sets of hydraulic rods are arranged alternately on the base. A driven plate is provided at one end of each set of hydraulic rods facing each other.
[0007] A support mechanism for supporting the handle is placed on the base and fits against the side of the drive mechanism. The support mechanism includes a clamping block with a clamping groove on the side away from the drive mechanism. Limiting strips are provided on both the upper and lower sides of the clamping groove.
[0008] A positioning mechanism is provided for positioning and clamping the handle. Two positioning mechanisms are provided and placed at both ends of the drive mechanism. The positioning mechanism includes a limiting plate. Two protrusions are provided on the side of the limiting plate away from the drive mechanism. Each protrusion is provided with a positioning component.
[0009] Preferably, each set of hydraulic rods has two rods, which are hydraulically slidably connected to the base, and the bottom of the driven plate is slidably connected to the top of the base.
[0010] Preferably, the clamping groove is arc-shaped with an outward convex shape, and both sides of the clamping groove are provided with arc-shaped chamfer structures. Each of the limiting strips is arc-shaped with an outward convex shape.
[0011] Preferably, each of the limiting plates has an arc-shaped positioning surface on the side facing the support mechanism.
[0012] Preferably, each of the positioning components includes a positioning block, a guide block is provided at the end of the positioning block away from the protrusion, and a guide surface is provided on the side of the guide block facing the support mechanism.
[0013] Preferably, the guide surface is arc-shaped, the arc is concave, and the connection between the guide surface and the guide block is provided with an outwardly convex arc-shaped limiting surface.
[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0015] This utility model provides a surface drawing fixture for CNC machining handles. The fixture includes a base, a drive mechanism, a support mechanism, and a positioning mechanism. The overall structure is simple and rationally designed. The positioning components all include positioning blocks. A guide block is provided at the end of the positioning block away from the protrusion. A guide surface is provided on the side of the guide block facing the support mechanism. The curved handle is fitted into the curved groove on the side of the clamping block. Then, through a connecting pipe, two driven plates move synchronously towards each other. The positioning components on the protrusion limit and clamp the two ends of the curved handle. During clamping, the curved handle fits more closely to the clamping groove, completing the fixation of the curved handle. This is convenient and does not damage the surface of the curved handle, making it quite practical. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the main structure of this utility model;
[0017] Figure 2 This utility model Figure 1 Schematic diagram of the supporting mechanism;
[0018] Figure 3 This utility model Figure 1 A schematic diagram of the positioning component.
[0019] The reference numerals and names in the figure are as follows:
[0020] 1. Base; 2. Drive mechanism; 21. Base; 22. Connecting pipe; 23. Hydraulic rod; 24. Driven plate; 3. Support mechanism; 31. Clamping block; 32. Clamping groove; 33. Limiting strip; 4. Positioning mechanism; 41. Limiting plate; 42. Positioning surface; 43. Protrusion; 44. Positioning assembly; 441. Positioning block; 442. Guide block; 443. Guide surface. Detailed Implementation
[0021] 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.
[0022] In the description of the embodiments of this utility model, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing the embodiments of this utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of this utility model, "multiple" means two or more, unless otherwise explicitly specified.
[0023] In this embodiment of the invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment of the invention according to the specific circumstances.
[0024] Please see Figures 1 to 3 One embodiment of this utility model is a surface brushing fixture for CNC machining handles, comprising a base 1:
[0025] The drive mechanism 2 is used to drive the clamp. The drive mechanism 2 is placed on the base 1 and includes a base 21. A connecting pipe 22 is provided on the top of the base 21, and two sets of hydraulic rods 23 are arranged alternately on the base 21. A driven plate 24 is provided at one end of each set of hydraulic rods 23 facing each other. There are two hydraulic rods 23 in each set and they are hydraulically slidably connected to the base 21. The bottom of the driven plate 24 is slidably connected to the top of the base 1.
[0026] Support mechanism 3 is used to support the handle. Support mechanism 3 is placed on base 1 and fits against the side of drive mechanism 2. Support mechanism 3 includes clamping block 31. Clamping block 31 is provided with clamping groove 32 on the side away from drive mechanism 2. Limiting strips 33 are provided on the upper and lower sides of clamping groove 32. Clamping groove 32 is arc-shaped and the arc shape is convex. Both sides of clamping groove 32 are provided with arc-shaped chamfer structure. Each limiting strip 33 is arc-shaped and the arc shape is convex.
[0027] Positioning mechanism 4 is used to position and clamp the handle. Two positioning mechanisms 4 are provided and placed at both ends of the drive mechanism 2. The positioning mechanism 4 includes a limiting plate 41. Two protrusions 43 are provided on the side of the limiting plate 41 away from the drive mechanism 2. Each protrusion 43 is provided with a positioning component 44. Each limiting plate 41 is provided with an arc-shaped positioning surface 42 on the side facing the support mechanism 3. Each positioning component 44 includes a positioning block 441. A guide block 442 is provided on the end of the positioning block 441 away from the protrusion 43. A guide surface 443 is provided on the side of the guide block 442 facing the support mechanism 3. The guide surface 443 is arc-shaped and concave. An outwardly convex arc-shaped limiting surface is provided at the connection between the guide surface 443 and the guide block 442.
[0028] In practice, the inner side of the arc-shaped handle is attached to the clamping groove 32, and then a hydraulic drive device (which is existing technology and will not be described in detail here) is connected through the connecting pipe 22. The hydraulic drive device drives the two driven plates 24 to move synchronously towards each other. The positioning components 44 on the two protrusions 43 limit the two ends of the arc-shaped handle. When limiting, the guide surface 443 wraps around the two ends of the arc-shaped handle. After fixing, the surface of the arc-shaped handle is brushed by a wire drawing device (which is existing technology and will not be described in detail here).
[0029] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.
Claims
1. A surface brushing fixture based on CNC machining handle, comprising a base (1), characterized in that: A drive mechanism (2) is used to drive the clamp. The drive mechanism (2) is placed on the base (1) and includes a base (21). A connecting pipe (22) is provided on the top of the base (21), and two sets of hydraulic rods (23) are arranged alternately on the base (21). A driven plate (24) is provided at the opposite end of each of the two sets of hydraulic rods (23). Support mechanism (3) is used to support the handle. The support mechanism (3) is placed on the base (1) and fits against the side of the drive mechanism (2). The support mechanism (3) includes a clamping block (31). The clamping block (31) is provided with a clamping groove (32) on the side away from the drive mechanism (2). Limiting strips (33) are provided on both the upper and lower sides of the clamping groove (32). The positioning mechanism (4) is used to position and clamp the handle. There are two positioning mechanisms (4) and they are placed at both ends of the drive mechanism (2). The positioning mechanism (4) includes a limiting plate (41). Two protrusions (43) are provided on the side of the limiting plate (41) away from the drive mechanism (2). Each protrusion (43) is provided with a positioning component (44).
2. The surface wire drawing fixture based on CNC machining handle according to claim 1, characterized in that: Each set of hydraulic rods (23) is provided in two and is hydraulically slidably connected to the base (21), and the bottom of the driven plate (24) is slidably connected to the top of the base (1).
3. The surface wire drawing fixture based on CNC machining handle according to claim 1, characterized in that: The clamping groove (32) is arc-shaped and convex. Both sides of the clamping groove (32) are provided with arc-shaped chamfer structures. Each of the limiting strips (33) is arc-shaped and convex.
4. The surface wire drawing fixture based on CNC machining handle according to claim 1, characterized in that: Each of the limiting plates (41) has an arc-shaped positioning surface (42) on the side facing the support mechanism (3).
5. A surface brushing fixture based on CNC machining handle according to claim 1, characterized in that: Each of the positioning components (44) includes a positioning block (441), and a guide block (442) is provided at one end of the positioning block (441) away from the protrusion (43). The guide block (442) is provided with a guide surface (443) on the side facing the support mechanism (3).
6. A surface brushing fixture based on CNC machining handle according to claim 5, characterized in that: The guide surface (443) is arc-shaped and concave, and the connection between the guide surface (443) and the guide block (442) is provided with an outwardly convex arc-shaped limiting surface.