A processing fixture with controllable clamping force

Abstract

The invention discloses a clamp with controllable clamping force and for machining. Positioning and clamping for a workpiece are achieved very well, the tight-pressing force on the workpiece can be controlled very well, the damages to the workpiece is avoided, and the effect of improving the machining efficiency is achieved on the large-batch production. According to the technical scheme, the clamp comprises a foundation plate; guiding plates are disposed above the foundation plate; a sliding block is disposed between the two guiding plates; a threaded rod is inserted into the left side wall of the sliding block in a penetrating mode; a circular disc is mounted on the threaded rod; an ejector rod is inserted into the sliding block in a penetrating mode; and a spring is connected between the left end of the circular disc and the bottom wall of a blind hole. In an initial state, the circular disc is located on the leftmost side of the blind hole under the action of the spring, wedge grooves which are formed in the right side of the threaded rod and uniformly distributed circumferentially are formed in the outer edge of the ejector rod; clamping blocks which are uniformly distributedcircumferentially and can extend and retract in a radial direction are disposed on the inner wall of the position, matched with the ejector rod, of the threaded rod; and when the threaded rod moves rightwards relative to the ejector rod, the clamping blocks can be clamped into the wedge grooves so that the threaded rod can rotate only in one direction, and the threaded rod can move only leftwardsif the threaded rod rotates in one direction. The clamp is novel in conception.

Description

technical field [0001] The invention relates to the technical field of fixtures for machining, in particular to a fixture for machining with controllable clamping force. Background technique [0002] Aluminum profiles are gradually widely used in the industry. When processing profiles, due to their use occasions and design requirements, the size of the profiles has a large difference, and the profiles need to be clamped during processing to keep them in place. stabilized and then processed. [0003] Among the existing equipment, it is more commonly used to set vises on the workbench, or use cylinder clamps to clamp, and then process the workpiece. When using vises, it takes more time to clamp, but using cylinders When fixing, continuous air supply is required to maintain the stability of the cylinder, which will cause waste of resources, and the use of the cylinder in the workshop will cause a lot of noise, so it is necessary to design a fixture that can quickly and stably ...

AI Technical Summary

Problems solved by technology

[0003] Among the existing equipment, it is more commonly used to set vises on the workbench, or use cylinder clamps to clamp, and then process the workpiece. When using vises, it takes more time to clamp, but using cylinders When fixing, continuous air supply is required to maintain the stability of the cylinder, which will cause waste of resources, and the use of the cylinder in the workshop will cause a lot of noise, so it is necessary to design a fixture that can quickly and stably fix aluminum profiles

[0004] In addition, because the material of the aluminum profile is relatively soft, when positioning the workpiece, increasing the contact area between the force application surface and the surface of the workpiece, and at the same time making the pressure vertically applied to the surface of the workpiece can effectively ensure the compaction effect of the aluminum product. In addition, When the pressing force is large, it will cause certain damage to the surface of the aluminum product workpiece. Therefore, it is very important to design a fixture that is easy to adjust, adaptable to various workpieces, and can effectively control the clamping force. Necessary

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