Drilling tool

Abstract

The invention provides a drilling tool which comprises a positioning frame, a cylinder, a cylinder fixing plate, a reset spring, a pressure plate and a positioning block, wherein an isosceles trapezoid inclined plane is arranged on the positioning frame; the inclination of the isosceles trapezoid inclined plane coincides with the blank surface of a part to be machined; an output shaft of the cylinder penetrates through the cylinder fixing plate and is connected with the pressure plate; the pressure plate, the positioning frame and the cylinder fixing plate are arranged in parallel; the pressure plate is arranged between the positioning frame and the cylinder fixing plate; the positioning block is arranged at one end, close to the positioning frame, of the pressure plate; and the reset spring is arranged between the cylinder fixing plate and the pressure plate and is arranged coaxially with the cylinder. The drilling tool has a simple structure and carries out primary positioning by utilizing the positioning frame and secondary guide positioning by utilizing the positioning block so as to promote the positioning accuracy, thereby promoting the clamping accuracy, ensuring the machining accuracy and increasing the qualified rate of products.

Description

technical field [0001] The invention belongs to the field of mechanical processing equipment, in particular to a drilling tool. Background technique [0002] One of the chassis parts of track shoe construction machinery is a vulnerable part of the construction machinery used. Now it is commonly used on excavators, bulldozers, crawler cranes, paver and other construction machinery. The process of track shoe processing is milling The two sides of the part are required to be parallel, the size meets the tolerance requirements of the drawing, and the two processed sides and the inner cavity blank surface are required to have uniform wall thickness. Currently, the clamping of this part in the processing process is through the lower fixing plate of the mold. The positioning of the arc and the slopes on both sides is realized by hydraulic clamping at the top. However, in this method, because the lower fixing plate of the mold is centered with a fixed slope, and there is an error in...

AI Technical Summary

Problems solved by technology

[0002] One of the chassis parts of track shoe construction machinery is a vulnerable part of the construction machinery used. Now it is commonly used on excavators, bulldozers, crawler cranes, paver and other construction machinery. The process of track shoe processing is milling The two sides of the part are required to be parallel, the size meets the tolerance requirements of the drawing, and the two processed sides and the inner cavity blank surface are required to have uniform wall thickness. Currently, the clamping of this part in the processing process is through the lower fixing plate of the mold. The positioning of the arc and the slopes on both sides is realized by hydraulic clamping at the top. However, in this method, because the lower fixing plate of the mold is centered with a fixed slope, and there is an error in the size of the workpiece slope, the lower fixing plate of the mold and the workpiece are caused. Inaccurate or too tight contact between the two sides, resulting in deviations in the wall thickness of the two sides after processing, and in severe cases, it is easy to cause waste products

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