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 processing device, in particular to a manual milling device for a helical surface of a concave cavity in a hole. Background technique [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. cavity (such as Figure 7 As shown), the milling cutter bar for machining the helical surface of the concave cavity in the workpiece hole is thin and long, and the milling machine is used for processing. The slender tool bar is affected by the vibration of the milling machine when it rotates, and the machining dimensional accuracy and roughness cannot be guaranteed; if it is used Turning method processing, the workpiece turns a circle and the ...

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. cavity (such as Figure 7 As shown), the milling cutter bar for machining the helical surface of the concave cavity in the workpiece hole is thin and long, and the milling machine is used for processing. The slender tool bar is affected by the vibration of the milling machine when it rotates, and the machining dimensional accuracy and roughness cannot be guaranteed; if it is used Turning method processing, the workpiece turns a circle and the tool travels a stroke, it is difficult to stop at the feeding position accurately, once the amount is exceeded due to the influence of 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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