Manually operated miller for notched screw surface inside hole

Abstract

The manually operated miller for notched screw surface inside hole has one sleeve with limiting steps, outer screw section and axially extending notch in the back section wall, screw matched locating disc and milling cutter location regulator in the outer screw section; one inner screw tube inside the sleeve; one cutter rod with screw section for fitting the inner screw tube and front conic front part to match the front hole of the sleeve; one milling cutter extending axially from the front end of the cutter rod; and one manually operated rotation mechanism fixed to the tail of the cutter rod. The present invention operates the cutter rod manually for rotation machining, and has accurate locating, no vibration and no inertia.

Description

technical field [0001] The invention relates to a manual machining device, in particular to a manual milling device for a helical surface of a concave cavity in a hole. Background technique [0002] The milling of the helical surface of the concave cavity in the workpiece hole is relatively difficult, and the machine tool is used for processing, usually only rough machining can be performed. In the concave cavity (as shown in Figure 7), the milling cutter arbor for machining the helical surface of the concave cavity in the workpiece hole is thin and long. It is processed by a milling machine. When the slender arbor is rotated, it is affected by the vibration of the milling machine and cannot guarantee the machining size. Accuracy and roughness; such as machining by turning method, it is difficult to stop the workpiece accurately and accurately at the feed position after one revolution of the workpiece and one stroke of the tool. Once the excess is exceeded due to the influen...

AI Technical Summary

Problems solved by technology

[0002] The milling process of the helical surface of the concave cavity in the workpiece hole is relatively difficult, and the machine tool equipment is used for processing, and usually only rough machining can be performed. The reason is that the two ends of the workpiece to be processed are holes, and the middle of the hole is a concave cavity. In the concave cavity (as shown in Figure 7), the milling cutter shank for machining the helical surface of the concave cavity in the workpiece hole is thin and long. It is processed by a milling machine. When the slender tool shank is rotated, it is affected by the vibration of the milling machine and cannot guarantee the processing size. Accuracy and roughness; if the turning method is used for processing, it is difficult to accurately stop at the feed position when the workpiece rotates once and the tool travels one stroke. Once the amount is exceeded due to inertia, the helical surface will be damaged and the product will be scrapped.

At the same time, it is difficult to design the milling cutter for machining the helicoid of the concave cavity in the workpiece hole. Generally, the milling cutter adopts a symmetrical blade to maintain balance, which is limited when machining the helicoid of the concave cavity in the hole, and it is difficult to complete high-precision machining

When the machining accuracy of the part is high, the tolerance is ≤0.1mm; ⊥0.03, and the roughness requirement is high, the above equipment and tools cannot guarantee the milling quality of the helical surface of the concave cavity in the workpiece hole.

In the case that the current equipment cannot meet the needs, a processing device for the helical surface of the concave cavity in the hole is needed to make up for the gap

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