CN102114592A

CN102114592A - Manufacture method of tool for processing aluminum alloy internal threaded hole

Info

Publication number: CN102114592A
Application number: CN2009102661050A
Authority: CN
Inventors: 叶志刚
Original assignee: Beijing Hangke Engine Control System Science & Technology Co ltd
Current assignee: Beijing Hangke Engine Control System Science & Technology Co ltd
Priority date: 2009-12-30
Filing date: 2009-12-30
Publication date: 2011-07-06

Abstract

The invention provides a manufacture method of a tool for processing an aluminum alloy internal threaded hole, which comprises the steps of: 1, cutter-sharpening and smoothing any two cutting blades of three cutting blades of an internal thread screw tap; 2, manufacturing an eccentric sleeve used for regulating the rotating diameter of the internal thread screw tap; and 3, placing the cutter-sharpened internal thread screw tap into the eccentric sleeve. When an internal threaded hole is milled in an aluminum alloy material, the invention can ensure that the verticality of the end face of the internal threaded hole of an aluminum piece and an internal thread and the concentricity of the internal thread of the aluminum piece and a straight jaw of a sealing rubber ring are both less than 0.05 mm as a form and position tolerance, and solves the technical problems which can not be solved by the traditional internal thread screw cap, thereby enlarging the use function of the internal thread screw cap and having higher practical application value and economic benefit.

Description

A kind of manufacture method that is used to process the cutter of aluminium alloy internal thread hole

One technical field

The invention belongs to the manufacture method of mechanical milling cutter, particularly the internal thread screw tap improves one's methods.

Two background technologies

At present, the cutter that is used for processing aluminium alloy material material internal thread hole comprises: the cutter of internal thread screw tap and two kinds of shaped forms of internal thread milling cutter, the cutting edge of both cutters all has the angle of thread of 60 degree, and both big footpaths and path all should satisfy the requirement of screw thread when making cutter.The big footpath of milling is that 8 millimeters, pitch are that 1 millimeter, precision are when being 4 to 7 grades internal thread hole in the aluminium alloy materials and parts, use concentricity that the internal thread milling cutter can realize the perpendicularity of aluminum component internal thread aperture end face and internal thread and aluminum component internal thread and the straight mouth of O-ring seal all less than 0.05 millimeter Geometrical Tolerance Principle, and use internal thread screw tap can't be realized above-mentioned Geometrical Tolerance Principle.At present, the price of internal thread milling cutter is far above the internal thread screw tap of same specification on the market, and big footpath is that 1 millimeter internal thread milling cutter is also seldom sold less than 10 millimeters, pitch.

Three utility model contents

In order to address the above problem, the invention provides a kind of internal thread screw tap transformation of the way and be the method for internal thread milling cutter, can make the internal thread screw tap after the transformation of the way have the function of milling cutter, promptly in milling aluminium alloy materials and parts the big footpath of processing be 8 millimeters, when pitch is 1 millimeter internal thread hole, can realize the perpendicularity of aluminum component internal thread aperture end face and internal thread and aluminum component internal thread and O-ring seal directly the concentricity of mouth all less than 0.05 millimeter technical problem.

Step of the present invention is as follows:

The big footpath of step 1 sharpening processing is that 8 millimeters, pitch are the cutting edge of 1 millimeter internal thread screw tap 1: sharpening scabbles the cutting edges of any two rows among described internal thread screw tap 1 three row's cutting edges, and the rotating diameter of the two row's cutting edges that scabbled by sharpening is less than the 4.7-5 millimeter;

Step 2 is made the eccentric bush 2 that is used to adjust internal thread screw tap rotating diameter: described eccentric bush is the endless tube shape object that CrWuMn makes, the wall thickness of eccentric bush one end is greater than the wall thickness of the other end, open the groove 6 of 1.2 mm wides vertically at an end of eccentric bush wall thickness, the outside diameter of eccentric bush is 10 millimeters, diameter of bore is 6.3 millimeters, the eccentric throw of cylindrical endoporus is 0.8 millimeter, and length is 30 millimeters;

The internal thread screw tap 1 after the processing of step 3 sharpening and the combination of eccentric bush 2: the described internal thread screw tap 1 of step 1 is put into the described eccentric bush 2 of step 2.

After the present invention transform the internal thread screw tap as the internal thread milling cutter, can not be when having solved internal thread screw tap machining internal thread hole with the perpendicularity that realizes screw thread and end face and screw thread to the concentricity of the straight mouth of its termination sealing all less than 0.05 millimeter problem, because the price of internal thread screw tap is far below the internal thread milling cutter of same specification, so the present invention has favorable economic benefit.

Four description of drawings

Fig. 1 changes the front view of back internal thread screw tap;

Fig. 2 eccentric bush front view;

Fig. 3 eccentric bush vertical view;

Fig. 4 changes the front view of the assembled state of back internal thread screw tap and eccentric bush;

Fig. 5 changes the installation front view of back internal thread screw tap and eccentric bush;

Wherein, the internal thread screw tap after the transformation of the way of 1-sharpening, 2-eccentric bush, the spring clip in the 3-cutter chuck, the locking nut on the 4-chuck, the collet body of 5-band taper shank, 6-eccentric bush groove.

Five specific embodiment

For better explanation the present invention, provide a better embodiment of the present invention below.

Concrete steps are:

Step 1, the big footpath of sharpening processing is that 8 millimeters, pitch are the cutting edge of 1 millimeter internal thread screw tap 1: sharpening scabbles the cutting edges of any two rows among described internal thread screw tap 1 three row's cutting edges, by sharpening scabble two row cutting edges rotating diameters less than the 4.7-5 millimeter, the state of the internal thread screw tap 1 after changing is referring to Fig. 1;

Step 2, making is used to adjust the eccentric bush 2 of internal thread screw tap rotating diameter, the endless tube shape object of making for CrWuMn in conjunction with Fig. 2 and the described eccentric bush 2 of Fig. 3, the wall thickness of eccentric bush 2 one ends is greater than the wall thickness of the other end, open the groove 6 of 1.2 mm wides vertically at an end of eccentric bush 2 wall thickness, the outside diameter of eccentric bush 2 is 10 millimeters, and diameter of bore is 6.3 millimeters, the eccentric throw of cylindrical endoporus is 0.8 millimeter, and length is 30 millimeters;

Step 3, the internal thread screw tap 1 after the sharpening processing is made up with eccentric bush 2: the described internal thread screw tap 1 of step 1 is put into the described eccentric bush 2 of step 2, and concrete assembled state is referring to Fig. 4;

The situation of installing and using of the cutter after the combination is referring to Fig. 5, on the spring clip 3 that the internal thread screw tap 1 and the eccentric bush 2 of step 3 combination is clipped in cutter chuck, after being adjusted into the rotating diameter of internal thread screw tap 1 less than the internal thread bottom diameter on the tool setting gauge, adjust locking nut 4 with spring clip 3 lockings, at last it being installed on the collet body 5 of band taper shank of machining tool is the millable internal thread hole.

Claims

1. manufacture method that is used to process the cutter of aluminium alloy internal thread hole is characterized in that step is as follows:

The big footpath of step 1 sharpening processing is that 8 millimeters, pitch are the cutting edge of 1 millimeter internal thread screw tap (1): sharpening scabbles the cutting edges of any two rows among described internal thread screw tap (1) three row's cutting edge, and the rotating diameter of the described two row's cutting edges after being scabbled by sharpening is less than the 4.7-5 millimeter;

Step 2 is made the eccentric bush (2) that is used to adjust internal thread screw tap rotating diameter: the endless tube shape object that described eccentric bush is made for the CrWuMn material, the wall thickness of eccentric bush one end is greater than the wall thickness of the other end, open the groove (6) of 1.2 mm wides vertically at an end of eccentric bush wall thickness, the outside diameter of eccentric bush is 10 millimeters, diameter of bore is 6.3 millimeters, the eccentric throw of cylindrical endoporus is 0.8 millimeter, and length is 30 millimeters;

The internal thread screw tap (1) after the processing of step 3 sharpening and the combination of eccentric bush (2): the described internal thread screw tap of step 1 (1) is put into the described eccentric bush of step 2 (2).