Superhard rotary pressure cutter

Abstract

The utility model discloses a superhard spinning pressure cutter which comprises a hard alloy cutter bar and a machining head, the machining head is provided with at least one arc working face, and the machining head is made of PCD or PCBN and hard alloy composite materials. The composite material spinning head is used for spinning and holing a copper pipe, so that the service life of a cutter is prolonged, and the smoothness of the copper pipe is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to tool technical field, especially a kind of superhard spinning force tool. BACKGROUND

[0002] The necking processing of copper pipe is usually carried out by full-automatic numerical control spinning machine, which adopts hydraulic rotary cylinder mode to clamp copper pipe, and single-tool, double-tool, three-tool or roller-type spinning tool is installed on the tool holder, and the tool is moved according to numerical control program to process the copper pipe.The quality and service life of the processed copper pipe product are seriously affected by the spinning tool, and how to ensure and improve the surface finish of the final processed product and prolong the service life of the tool is the focus of industry development. SUMMARY

[0003] The utility model discloses a kind of superhard spinning force tools to overcome the defects of prior art, prolong the service life of tool and improve the surface finish of product.

[0004] The utility model discloses a kind of superhard spinning force tools, including hard alloy tool rod and processing head, at least one arc working surface is arranged in the processing head.

[0005] Preferably, the arc working surface is made of diamond polycrystal or cubic boron nitride polycrystal.

[0006] Preferably, the arc working surface is a long strip-shaped block structure with a circular arc cross section, and the processing head and the hard alloy tool rod are welded together.

[0007] Preferably, the processing head is a cylinder, the arc working surface is the circumferential surface of the cylinder, and the processing head and the hard alloy tool rod are connected by a rotating shaft.

[0008] The utility model has the following advantages: a superhard spinning force tool is provided, the processing head of the superhard spinning force tool is a composite material of PCD or PCBN and hard alloy, cooperates with the arc working surface, realizes the necking processing of copper pipe, and the surface finish of the processed copper pipe is high, and at the same time, due to the use of composite material, the service life of the superhard spinning force tool is greatly improved, and the processing efficiency is also greatly improved. BRIEF DESCRIPTION OF DRAWINGS

[0009] Figure 1 It is the overall structure schematic diagram of embodiment 1 of the utility model;

[0010] Figure 2 It is the sectional structure schematic diagram of embodiment 1 of the utility model;

[0011] Figure 3 It is the overall structure schematic diagram of embodiment 2 of the utility model.

[0012] In the figure, 1, steel knife rod 1; 2, processing head; 3, circular arc working surface. DETAILED DESCRIPTION

[0013] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be described clearly and completely below in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. The components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0014] Embodiment 1, as shown in Figure 1 , Figure 2 A kind of superhard spinning force cutter, including hard alloy knife rod 1 and processing head 2, hard alloy knife rod 1 is the clamping area of spinning machine, processing head 2 is provided with a circular arc working surface 3, the material of circular arc working surface 3 is diamond polycrystal, circular arc working surface 3 is the long strip-shaped semicylindrical block structure with circular arc cross section, processing head 2 and hard alloy knife rod 1 are assembled by hot inlay, 700-900 ℃ vacuum brazing, high frequency brazing, so that processing head 2 and hard alloy knife rod 1 are welded firmly and can withstand 150N impact force without falling off.

[0015] Embodiment 2, as shown in Figure 3 A kind of spinning force cutter, including hard alloy knife rod 1 and processing head 2, processing head 2 is cylindrical, the material of processing head 2 is cubic boron nitride polycrystal, the both ends of processing head 2 are provided with patterns, circular arc working surface 3 is the circumferential surface of cylinder, the end of hard alloy knife rod 1 is equipped with shaft mounting seat, processing head 2 and hard alloy knife rod 1 are connected by shaft and mounting seat assembly.

[0016] The diameter of the circular copper pipe processed by the spinning force cutter of the utility model is: Φ3-Φ40mm, and the circular copper sheet is processed into horn mouth shape or bowl shape structure by using spinning process.

[0017] Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical scheme recorded in the foregoing embodiments, or make equivalent replacement to part of the technical features, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A superhard spinning force tool, characterized by: The application relates to a hard alloy tool rod and a processing head, wherein the processing head is provided with at least one circular arc working surface, the processing head is a cylinder, the circular arc working surface is the circumferential surface of the cylinder, and the processing head and the hard alloy tool rod are connected through a rotating shaft assembly.

2. A superhard rotary press tool according to claim 1, wherein: The circular arc working surface is made of diamond or cubic boron nitride polycrystal.

3. A superhard rotary press tool according to claim 1, wherein: The circular arc working surface is a long strip block structure with a circular arc cross section, and the processing head and the hard alloy tool rod are welded together.

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