CN102120286B

CN102120286B - Method for welding double-metal drill reamer

Info

Publication number: CN102120286B
Application number: CN201110060285A
Authority: CN
Inventors: 刘晓明
Original assignee: 刘晓明
Current assignee: Shenzhen Xinyunxiang Precision Cutting Tools Co., Ltd.
Priority date: 2011-03-14
Filing date: 2011-03-14
Publication date: 2012-09-19
Anticipated expiration: 2031-03-14
Also published as: CN102120286A

Abstract

The invention discloses a method for welding a double-metal drill reamer, which is used for welding a drill reamer comprising a reamer head and a reamer handle. The method comprises the following steps: erecting the reamer handle; coating soldering paste on a welding surface, and putting on a soldering lug; aligning the reamer head and the reamer handle; applying pressure; welding by a welding machine; controlling welding temperature and welding time, wherein the welding surface of the reamer head and the reamer handle is in a V shape; and after the reamer head and the reamer handle are welded, keeping warm for the drill reamer. Based on the method, the reamer head and the reamer handle made of two different materials are firmly welded, thereby eliminating internal stress. The drill reamer has small possibility of deformation and has good precision.

Description

Bimetallic drilling reamer welding method

Technical field

The present invention relates to the metal cutting tool of machining hole, relate in particular to a kind of bimetallic drilling reamer welding method.

Background technology

In order to reduce the cost of charp tool, guaranteeing often to adopt two kinds of different materials (carbide alloy and steel) to make drill bit, reamer etc. under the normal prerequisite of using of cutter.But there is following defective in the cutter of two kinds of materials in when welding: weld insecure, exist internal stress, distortion and tool precision poor.

Summary of the invention

The object of the present invention is to provide a kind of bimetallic drilling reamer welding method, based on the present invention, drill bit or reamer firm welding that two kinds of different materials are made are eliminated the internal stress difficult deformation and are had excellent precision.

The invention discloses a kind of bimetallic drilling reamer welding method, said method is used to comprise the welding of the drilling reamer of cutter head and handle of a knife, comprises the steps: to weld preceding preparation process, and handle of a knife is erected, and coats soldering paste at solder side, puts weld tabs; Welding step aligns cutter head and handle of a knife, exerts pressure, and with the welding machine welding, control welding temperature and weld interval, the solder side of said cutter head and handle of a knife is in the shape of the letter V; Incubation step after welding, is incubated processing with drilling reamer.

In the preparation process, said weld tabs is the sandwich type weld tabs of argentiferous 35%, the thick 0.4-0.5 millimeter of said weld tabs before the above-mentioned welding method, preferred said welding.

Above-mentioned welding method, in the preferred said welding step, applied pressure is the 15-18 kilogram.

Above-mentioned welding method, in the preferred said welding step, the temperature of welding is 600 ℃-620 ℃, be 20-35 second weld interval.

Above-mentioned welding method in the preferred said incubation step, is put into the drilling reamer that welds incubator or is imbedded white lime, is incubated at least 8 hours.

Above-mentioned welding method in the preferred said incubation step, in insulating process, is vertically placed said drilling reamer.

In terms of existing technologies, drill bit or reamer firm welding that the present invention can make two kinds of different materials make are eliminated the internal stress difficult deformation and are had excellent precision.

Description of drawings

Fig. 1 a is the structural representation of drilling reamer;

Fig. 1 b is the be in the shape of the letter V structural representation of drilling reamer of the solder side of cutter head and handle of a knife;

Fig. 2 is a bimetallic drilling reamer welding method embodiment working state schematic representation of the present invention.

The specific embodiment

For make above-mentioned purpose of the present invention, feature and advantage can be more obviously understandable, below in conjunction with accompanying drawing and the specific embodiment the present invention done further detailed explanation.

Fig. 1 a is the structural representation of drilling reamer, and left side cutter head 2 is that the trade mark is the carbide alloy of K10, and the right handle of a knife 5 is steel of trade mark 40Cr.With reference to Fig. 1 b, adopt the welding of V font, V font solder side 9 is as shown in the figure, can increase bonding area, in conjunction with more firm.

Fig. 2 is the welding sketch map.This device comprises cylinder 1, cutter head 2, induction coil 3, sandwich weld tabs 4, handle of a knife 5, holder 6, base 7 and high-frequency induction welder 8.Annexation is as shown in the figure.During welding handle of a knife 5 is erected; Earlier coat soldering paste, put the sandwich weld tabs 4 (the thick 0.4-0.5 millimeter of weld tabs) of cutting out suitable argentiferous 35%, cutter head 2 and handle of a knife 5 are aligned at solder side; Apply the pressure of about 15-18 kilogram again; With high-frequency induction welder 8 welding, welding temperature is controlled at 600 ℃-620 ℃, 20-35 second weld interval.Because the coefficient of expansion of two kinds of materials of cutter is different, is easy to generate crackle, to put into incubator at once after welding or imbed white lime, insulation is more than 8 hours.To keep during insulation standing up, with anti-deformation.

In the present embodiment, two kinds of materials weld with V word welding method, firm welding, and because through insulation, eliminated internal stress, can not deform, cutter can keep precision constant.Make the cutter escapable cost in this way more than 10%.Be fit to diameter at the cutter of Φ more than 20.

More than a kind of bimetallic drilling reamer welding method provided by the present invention is described in detail; Used specific embodiment among this paper principle of the present invention and embodiment are set forth, the explanation of above embodiment just is used for helping to understand method of the present invention and core concept thereof; Simultaneously, for one of ordinary skill in the art, according to thought of the present invention, part all can change on the specific embodiment and range of application.In sum, this description should not be construed as limitation of the present invention.

Claims

1. bimetallic drilling reamer welding method, said method are used to comprise the welding of the drilling reamer of cutter head and handle of a knife, it is characterized in that said method comprises the steps:

Preparation process before the welding erects handle of a knife come, and coats soldering paste at solder side, puts weld tabs;

Welding step aligns cutter head and handle of a knife, exerts pressure, and with the welding machine welding, control welding temperature and weld interval, the solder side of said cutter head and handle of a knife is in the shape of the letter V;

Incubation step after welding, is incubated processing with drilling reamer;

In the preparation process, said weld tabs is the sandwich type weld tabs of argentiferous 35%, the thick 0.4-0.5 millimeter of said weld tabs before the said welding;

In the said welding step, applied pressure is the 15-18 kilogram;

In the said welding step, the temperature of welding is 600 ℃-620 ℃, and be 20-35 second weld interval;

In the said incubation step, the drilling reamer that welds is put into incubator or imbedded white lime, be incubated at least 8 hours;

In the said incubation step, in insulating process, said drilling reamer is vertically placed.