Combined supporting and pressing mechanism capable of preventing pressing and sinking

Abstract

The invention discloses a combined supporting and pressing mechanism capable of preventing pressing and sinking. The combined supporting and pressing mechanism comprises a pressing component and a combined supporting component, wherein the pressing component comprises a movable pressing plate and a pressing screw; the pressing screw is inserted in a ring-shaped groove of the movable pressing plateand is capable of freely sliding; the combined supporting component comprises an adjustable supporting screw and a smooth surface pressing block. According to the combined supporting and pressing mechanism capable of preventing pressing and sinking, a tool withdrawal groove of the adjustable supporting screw is firstly inserted in a threaded hole of the smooth surface pressing block; after the adjustable supporting screw is in threaded fit connection with the smooth surface pressing block, the adjustable supporting screw is further tightly screwed and is inserted into an avoidance inner holeof the smooth surface pressing block, and the adjustable supporting screw is in floating fit connection with the smooth surface pressing block, so that the combined supporting function is achieved; the contact area can be changed by changing the outer diameter size parameter of the smooth surface pressing block; the combined supporting and pressing mechanism is capable of avoiding different specifications of grooves in a fixture base locating surface, ensuring that the adjustable supporting screw is not deflected, clamping the movable pressing plate, meeting the machining requirements of products, and increasing the machining qualification rate of the product.

Description

technical field [0001] The invention relates to the positioning and clamping technology of wall plate parts, in particular to a combination support and compression mechanism for preventing compression and subsidence. Background technique [0002] In the prior art, general-purpose vacuum milling clamps are mostly used for milling wallboard parts, and the positioning scheme of "one side with two holes" is adopted, and the parts are pressed by adjustable support screws and pressure plates. Wherein, the upper surface of the tooling base serving as the part positioning reference plane is evenly distributed with air extraction grooves and sealing grooves. [0003] In the actual processing process, it is found that the use of adjustable support screws and pressure plates to compress parts has the following disadvantages. [0004] 1. The outer diameter of the adjustable support screw rod is too small, and it is easy to sway when it falls into the notch on the upper surface of the t...

AI Technical Summary

Problems solved by technology

[0004] 1. The outer diameter of the adjustable support screw rod is too small, and it is easy to sway when it falls into the notch on the upper surface of the tooling base, and cannot play a supporting role, resulting in uneven pressing of the pressing plate and insufficient pressing force of the pressing plate, which seriously affects the processing quality of the parts

[0005] 2. The adjustable support screw rod is in contact with the arc on the upper surface of the tooling base, which is easy to crush the positioning surface of the tooling, seriously affecting the positioning accuracy of the tooling positioning surface, easily causing the tooling to be scrapped, and reducing the service life of the tooling

[0006] 3. In order to prevent the adjustable support screw from sinking into the notch, it is necessary to continuously adjust the support position, resulting in too long clamping time for parts and low production efficiency

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