Movable CBN (cubic boron nitride) grinding wheel dresser for following double-grinding-carriage crankshaft grinder

Abstract

The invention discloses a movable CBN (cubic boron nitride) grinding wheel dresser for a following double-grinding-carriage crankshaft grinder. A diamond roller is arranged at one end of an electric spindle; the electric spindle is arranged in a hole of a box body and is fixed on the box body through screws; the box body is fixed to the top of a connecting body through screws; the bottom of the connecting body is provided with sliders; the connecting body provided with the sliders can move along a linear guide rail; the linear guide rail is connected with a base through screws; an oil cylinder is fixed to the base through screws, and a piston in the oil cylinder is connected with the box body through the connecting body; a rolling bearing is arranged in a chute of a spring and a compression handle; one end of the base is provided with a limiting block along the movement direction of the linear guide rail. The device has the characteristics of compact structure, simple movement, high rigidity, stable correctness and the like, the crankshaft machining precision can be guaranteed, the production efficiency of the following double-grinding-carriage crankshaft grinder is improved, and the movable CBN grinding wheel dresser is suitable for high-precision, high-speed and high-acceleration / deceleration following machining of automobile crankshafts.

Description

technical field [0001] The invention relates to the technical field of numerically controlled grinding machines, in particular to a movable CBN grinding wheel dresser for a crankshaft grinding machine with a moving double grinding wheel frame. Background technique [0002] The application of CBN grinding wheel on crankshaft grinding machine for large depth of cut and high efficiency grinding has become the development direction of today's crankshaft grinding machine. The crankshaft grinder is required to grind the outer circle and thrust surface of the crankshaft main journal and connecting rod journal, and the outer circle and end surface of the CBN grinding wheel are required to participate in grinding. There are three main problems in the CBN grinding wheel dresser of the existing crankshaft grinder: 1. The dresser of the crankshaft grinder is usually placed at the rear of the head and tail frame. External trimming edge. When using a grinding wheel with a larger diamete...

AI Technical Summary

Problems solved by technology

There are three main problems in the CBN grinding wheel dresser of the existing crankshaft grinder: 1. The dresser of the crankshaft grinder is usually placed at the rear of the head and tail frame. External trimming edge

When using a grinding wheel with a larger diameter, in order to meet the dressing needs, the stroke of the grinding wheel feed mechanism (X-axis) must be increased, which will not only reduce the efficiency of the machine tool, but also affect the movement accuracy of the X-axis

If a larger grinding wheel is replaced later, the grinding wheel will interfere with the dresser; 2. At present, the crankshaft grinder uses two sets of diamond rollers when dressing the outer circle and end face of the CBN grinding wheel. 3. At present, the layout of the crankshaft grinder dresser is mostly in the form that the center line of the diamond roller is parallel to the center line of the grinding wheel or the angle between the two is an acute angle. The left and right end faces of the grinding wheel use diamond rollers The left and right dressing blades are trimmed separately. In order to ensure that the dresser has enough space to dress the left and right end faces of the grinding wheel, when the grinding wheel is wider, the length of the shaft end of the electric spindle must be increased, resulting in insufficient rigidity of the dresser. Therefore, when the electric spindle is running at high speed , the shaft end drives the roller to rotate, which will cause vibration, which will affect the dressing accuracy of the CBN grinding wheel

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