Application Of Gun Drill In Deep Hole Processing Of Thimble And Barrel Part
Jan 26, 2019

Thimble and barrel are the most commonly used parts in die and mould industry. The thimble is used in conjunction with the barrel. The most typical feature of the barrel part is that the inner hole is a step hole, and the inner diameter of the step hole is 0.5-1.0 mm different. The processing of the step hole is the most difficult point in the whole processing of the barrel parts.

The use of thimble barrel is shown in the following figure:


See the drawing below for the parts of the barrel.


How can we efficiently process the step holes φ2-φ1.0 in the figure above?

In order to solve this problem,Dezhou Guanlu Precision Machinery Co.,Ltd has developed a special machine tool for guns and drills with high pertinence. This gun drilling machine tool is briefly introduced as follows:

gun drilling


2. Machine tool features: The machine tool uses gun drilling method to process stepped holes in the barrel. It has the advantages of high processing efficiency, inner hole roughness and high dimensional accuracy. In particular, the deep hole entrance and the outer circle have very good jump, which can be controlled within 0.025 mm.

3. In order to complete the gun drilling more efficiently, the machine adopts the method of drilling both right and left ends in opposite direction at the same time. Once clamping, the processing of deep holes of φ1.0 and φ2.0 can be completed. It greatly improves the processing efficiency.

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