Valve grinding and maintaining machine tool

Abstract

The invention provides a valve grinding and maintaining machine tool which is provided with a worktable; columns are respectively arranged on two sides of the worktable; the upper ends of the two columns are connected through a lifting cross beam; a lifting motor is connected with a lifting screw rod; and a tool fixture is arranged on the worktable. The valve grinding and maintaining machine tool is characterized in that column sleeves are respectively sleeved on the two columns, and connected through a back plate; the lower end of the lifting screw rod is screwed into a lifting nut fixed on the back plate; a box body is arranged on a support arm on the back plate; a transmission motor is arranged above the box body; a shaft of the transmission motor is connected with a transmission shaft passing through the box body; and a grinding mechanism is connected with the lower end of the transmission shaft fixedly and rigidly. The valve grinding and maintaining machine tool has the advantages that the bearing load is large, the rigidity is high, the strength is high, the stack welding repair is conducted to a valve sealing surface, and the process from stack welding coarse grinding to fine grinding is completed.

Description

technical field [0001] The invention specifically relates to a valve sealing surface maintenance equipment, in particular to a valve grinding and maintenance machine tool with compatible rough grinding and fine grinding functions, which can grind the valve sealing surface after surfacing welding with stainless steel electrodes and hard alloy electrodes. Background technique [0002] At present, the structural principles and installation forms of existing valve maintenance machines in my country are different. There are portable valve maintenance grinding machines with brackets installed on valves, and there are also machines with valves placed under the cantilever for maintenance, and motors are installed on machines with bearings. The direct-mounted valve repair machine directly fixed on the valve (these three types of equipment are hereinafter referred to as the valve repair grinder), such as utility model patent 00249416.7, utility model patent 200720086019, utility model p...

AI Technical Summary

Problems solved by technology

[0002] At present, the structural principles and installation forms of existing valve maintenance machines in my country are different. There are portable valve maintenance grinding machines with brackets installed on valves, and there are also machines with valves placed under the cantilever for maintenance, and motors are installed on machines with bearings. The direct-mounted valve repair machine directly fixed on the valve (these three types of equipment are hereinafter referred to as the valve repair grinder), such as utility model patent 00249416.7, utility model patent 200720086019, utility model patent 200720193798.1, generally speaking, This kind of equipment is practical and effective for grinding the valve sealing surface, but there are still some shortcomings, such as too simple structure, poor mechanical properties and rigidity, and poor working strength. It can only grind and repair the valve sealing surface instead of It is possible to complete the surfacing repair of the valve sealing surface through the process from rough surfacing grinding to precision grinding like a valve grinding and maintenance machine tool

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