Expansion mandrel for horizontal machining of electrical ceramic blank

Abstract

The invention discloses an expansion mandrel for horizontal machining of an electrical ceramic blank. The expansion mandrel is inserted and connected into a hole in the axis direction of the electricceramic blank and comprises a metal mandrel body and an air bag, wherein the outer wall of the metal mandrel body is coated with the air bag, the air bag is filled with an expansion medium, and the air bag abuts against the metal mandrel body and the inside of the hole of the electric ceramic blank. By the adoption of the expansion mandrel for horizontal machining of the electrical ceramic blank,the blank can be transversely machined, the product surface is improved, the problems that the electrical ceramic blank is prone to breakage during machining when being transversely placed is solved,the equipment height can be effectively reduced, the clamping difficulty and risk are lowered, the dust raising problem is relieved, and the dust collection effect is improved; and moreover, the safety risk of injuring the machining personnel due to product breakage, chipping and the like in the high-speed rotary machining process is lowered.

Description

Technical field: [0001] The invention relates to an expansion mandrel used for horizontal processing of electric porcelain blanks. Background technique: [0002] There are two schemes for the production process of high-voltage electric porcelain, one is the traditional process of filter press dehydration and vacuum extrusion molding, and the other is the dry process of spray drying dehydration and isostatic high-pressure compression molding. Both process schemes need to use water as the dispersion medium to make a slurry of various raw materials for homogenization and grinding, and then dehydrate the slurry by mechanical force to make a cylindrical intermediate product with a hole in the middle, which is commonly known as blank. [0003] Since the blank has not yet been sintered into porcelain, it is only combined by the self-bonding properties of clay, and its mechanical strength is very low, and it is easy to break once it is placed horizontally. Therefore, the tradition...

AI Technical Summary

Problems solved by technology

[0004] Due to the use of vertical lathe processing, the equipment is tall and heavy, and the tool running position is too high (according to different products, the highest processing point is about 5 meters from the ground, so personnel need to be clamped up and down by escalators and elevators, and auxiliary processing (manually polishing the surface) is time-consuming. strenuous

At the same time, due to the high processing position, it is difficult to effectively control the waste and dust generated during the processing process from a high place, especially when personnel are in the process of clamping, auxiliary processing (manual polishing) and other processes, there is a considerable risk of falling, and the blank due to its own defects Risk of breakage and fragmentation caused by damage, thrown from a high place, falling and hurting people

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