Improved clamping piece and tool
By using a modified clamping device that makes contact between a polyurethane block and the part surface, combined with a steel plate and screws for fixation, the problem of clamping force control in CNC machining is solved, achieving stable clamping of planar and slightly curved parts and improving machining quality.
Patent Information
- Application Number
- CN202520284715.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-21
- Publication Date
- 2026-01-30
- Estimated Expiration
- 2035-02-21
AI Technical Summary
In existing CNC machining, it is difficult to accurately control the clamping force of tooling parts, which can lead to surface damage or workpiece movement, affecting machining quality.
An improved clamping mechanism is adopted, which utilizes the contact between the polyurethane block and the part surface and is fixed by screws. Combined with the high static friction coefficient of the steel plate and the polyurethane block, flexible clamping is achieved, which is suitable for clamping flat and slightly curved parts.
It enables stable clamping of planar and slightly curved surface parts, avoids damage to parts, improves machining accuracy and stability, and is suitable for various types of machine tools.
Smart Images
Figure CN223848656U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to mechanical processing technical field, concretely relates to an improved clamping piece and tool. BACKGROUND
[0002] In general numerical control processing, the common pressing clamping mode of tooling parts is that two pressing plates are directly pressed on the surface of the part, and the pressing force of the pressing plate is used to make the part fast. Since the pressing plate directly contacts the part, the disadvantage of this method is that it is difficult to control the pressing force, and if the pressing force is too large, the surface of the part is easy to be damaged. If the pressing force is too small, the workpiece is easy to move, and the workpiece is easy to be hit by the tool during processing. UTILITARIAN CONTENT
[0003] The utility model aims at providing an improved clamping piece and tool suitable for pressing and clamping of plane and micro-curvature surface parts.
[0004] TECHNICAL SCHEME
[0005] In the first aspect, an improved clamping piece is provided, which comprises a pressing plate.
[0006] The clamping area of the clamping head of the pressing plate is provided with a notch, and a plastic block is installed in the notch.
[0007] During the clamping process of the part, the plastic block contacts the surface of the part.
[0008] The pressing plate is a steel plate for installing the plastic block.
[0009] The static friction coefficient of the plastic block is higher than that of the steel plate.
[0010] The plastic block is fixed in the notch through a screw.
[0011] The screw is embedded in the plastic block.
[0012] In the second aspect, an improved clamping tool is provided, which comprises:
[0013] A pressing plate, a base, a nut and a screw.
[0014] The middle part of the pressing plate is provided with a waist-shaped hole, the screw passes through the waist-shaped hole, the upper end is assembled with the pressing plate through the nut, the lower end is installed in the T-shaped groove of the workbench, and the base is provided with multiple stages of platforms; The connection position of the screw and the nut and the stage on which the pressing plate is placed are determined by the height of the part.
[0015] ADVANTAGEOUS EFFECTS
[0016] The utility model can be applicable to plane and micro curvature surface part pressure tight clamping. The static friction coefficient of steel is about 0.4, and the static friction coefficient of polyurethane is about 0.6, so that it can complete clamping without too much pressure tight force, and polyurethane can have certain elastic deformation, so that it can still clamp micro curved surface workpiece. And polyurethane has the characteristics of wear resistance, oil resistance and oxidation resistance, so that the pressure tight clamping tool is applicable to the field of mechanical processing, and various types of machine tools can be used. BRIEF DESCRIPTION OF DRAWINGS
[0017] Fig. 1 It is a structure diagram of an improved clamping tool.
[0018] Fig. 2 It is a reverse diagram of an improved clamping part. DETAILED DESCRIPTION
[0019] Taking the material of the plastic block as polyurethane, the utility model provides an improved clamping tool, as shown in the figure, which comprises: Figs. 1-2
[0020] Pressing plate 1, base 2, nut 4, screw rod 3;
[0021] The clamping area of the clamping head of the pressing plate is provided with a notch, and a polyurethane block 5 is installed in the notch.
[0022] During the clamping of the part, the polyurethane block is in contact with the surface of the part.
[0023] The pressing plate is a steel plate with a polyurethane block.
[0024] The static friction coefficient of the polyurethane block is higher than that of the steel plate.
[0025] The polyurethane block is fixed in the notch by a screw 6.
[0026] The screw is embedded in the polyurethane block.
[0027] The assembly process of the present application is as follows:
[0028] According to the size of the surface curvature of the part, the appropriate plastic block 5 and screw 6 are assembled on the pressing plate 1. According to the length of the pressing plate 1, the workpiece and the base 2 are placed on the workbench at the appropriate position. According to the height of the machined part, the base 2 is selected to the appropriate platform position. The screw rod 3 passes through the T-shaped groove of the workbench and the waist-shaped hole of the pressing plate 1. The nut 4 is tightened with the screw rod 3, and the clamping of the part is realized.
Claims
1. An improved clamp, characterized in that, The utility model relates to a clamping device for clamping parts, comprising: a pressing plate; a clamping head of the pressing plate is provided with a clamping area with a notch, and a plastic block is arranged in the notch; wherein, during clamping of the part, the plastic block is in contact with the surface of the part.
2. The improved clamp of claim 1, wherein The pressing plate is a steel plate provided with the plastic block.
3. The improved clamp of claim 2, wherein, The static friction coefficient of the plastic block is higher than that of the steel plate.
4. The improved clamp of claim 2, wherein, The plastic block is fixed in the notch by a screw.
5. The improved clamp of claim 4 wherein, The screw is embedded in the plastic block.
6. An improved clamping tool characterized by The utility model relates to a clamping device for clamping parts, comprising: the improved clamping piece, base, nut and screw rod of any one of claims 1-5; a waist-shaped hole is arranged in the middle of the pressing plate, the screw rod passes through the waist-shaped hole, the upper end is assembled with the pressing plate through the nut, the lower end is arranged in the T-shaped groove of the workbench, the base is provided with multiple stages of platforms; the connection position of the screw rod and the nut and the stage of the pressing plate on which the platform is arranged are determined by the height of the part.