Special grinding machine for valve cone surface

Abstract

The invention discloses a grinding machine special for the conical surface of a valve. The grinding machine comprises a rack, a grinding head base, a lower dragging plate, an upper dragging plate, a grinding head, a main shaft device and an automatic loading device. The grinding head base is connected with the rack in a rotating mode. An included angle alpha between the axis of a grinding head abrasion wheel and the central line of a main shaft ranges from 25 degrees to 65 degrees. The portion, arranged at the tail end of a spring clamping head in the hollow main shaft, in the main shaft device is connected with a pulling pipe. Locating rods are arranged in the spring clamping head and the pulling pipe. The portion, below a feeding guide rail, in the automatic loading device is provided with a receiving support plate connected with a receiving air cylinder. A clamping jaw is arranged below the feeding guide rail and connected to a longitudinal sliding block. The longitudinal sliding block is supported on a transverse sliding table connected to a feeding bottom plate through a transverse air cylinder. The feeding bottom plate is connected to the rack. The grinding machine special for the conical surface of the valve can meet the requirement for grinding conical surfaces of valves of various specifications, and is high in clamping and locating precision; moreover, automation of the loading process can be achieved, the machining precision is ensured, and the work efficiency is improved.

Description

technical field [0001] The invention relates to a mechanical processing machine tool, in particular to a special machine tool for valve grinding. Background technique [0002] The valve is the seal that seals the combustion chamber and controls the gas exchange of the engine during the working process of the engine. It is an important part to ensure the power, economy and reliability of the engine. The conical surface on the valve is the matching surface with the valve seat ring, and is the most important matching surface of the valve, and its working state directly affects the output power of the engine. The processing quality of the valve cone surface is the most basic factor to ensure the good working condition of the valve. [0003] For valve processing that belongs to the scale of mass production, its processing quality largely depends on the precision and rigidity of the processing machine tool, and the high production efficiency of the machine tool is the prerequisit...

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Problems solved by technology

[0003] For the machining of valves belonging to the scale of mass production, the machining quality largely depends on the precision and rigidity of the machine tool, and the high production efficiency of the machine tool is the prerequisite for mass production. The valve cone usually used Grinding machine, from the point of view of the clamping and positioning accuracy of the valve during processing, the positioning and clamping of the valve usually adopts a three-point support or a double-cone top clamping tool installed on the spindle, or manual clamping with a spring chuck. It needs to be corrected and easy to change during use, the tooling replacement time is long, the adjustment is inconvenient, the clamping process is manually operated, and the degree of automation is low, resulting in inaccurate centering and unstable quality during the valve processing process; and usually the loading and unloading of the valve Most of the material operations are done manually, the operator has a high frequency of actions, and the labor intensity is high. Since the production scale of the valve belongs to mass production, the degree of automation of the machine tool is relatively high, the production cycle time is short, and the loading and unloading operations are more frequent. With the development of the development, the cost of human resources is getting higher and higher, and people's demand for automated production is gradually increasing. The situation of manual loading and unloading operations can no longer meet the production requirements.

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