Floating type uniform load planet grinding head

Abstract

The invention provides a floating type uniform load planet grinding head suitable for a field valve sealing face grinding machine. The floating type uniform load planet grinding head is characterized by comprising a clamping arm, bearings, planet grinding head bodies, springs, limiting screws and pressing screws. The clamping arm is used for being fixed to a sun shaft grinding disc of the grinding machine. The bearings are installed in bearing holes in the clamping arm and provide radial supporting and axial guiding for the planet grinding head bodies. Shaft necks of the planet grinding head bodies and the inner rings of the bearings are in movable fit. The springs are arranged in two arrangement manners, according to one manner, the springs are arranged on the shaft necks of the planet grinding head bodies in a sleeving manner; and according to the other manner, the plate type springs are fixed to the clamping arm. The limiting screws and the planet grinding head bodies are in threaded connection, and the pressing screws are used for fixing the plate type springs to the clamping arm. After the grinding pressure is set, the floating type planet grinding head bodies automatically compensate for the machining and installing errors of the planet grinding head bodies through deformation of the springs, and the problem that all the planet grinding head bodies hardly uniformly load and make contact with grinded faces is solved.

Description

technical field [0001] The patent of the present invention provides a floating load balancing planetary grinding head mechanism, which belongs to the technical field of on-site valve sealing surface grinding and processing. Background technique [0002] When grinding the sealing surface of valves on site, the currently used sun disk-planetary grinding head system is a planetary grinding head with axial rigidity and fixed planetary grinding head. Since the rigid planetary grinding head and the sun disk are rigidly fixedly connected, when the valve sealing surface grinder grinds the sealing surface, the application of the axial force of each planetary grinding head will cause the axis of the planetary grinding head to form an angle with the axis of the sun disk. However, the included angle is smaller than the preset compensation angle between the axis of the planetary grinding head and the axis of the sun disk when each planetary grinding head is in a free state. Therefore, t...

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Problems solved by technology

[0004] The purpose of the patent of the present invention is to address the above-mentioned grinding shortcomings and provide a floating planetary grinding head with uniform load, which solves the grinding problems of high processing difficulty, uneven pressure distribution during grinding, and low usage rate of sandpaper.

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