CN101524765B

CN101524765B - Small inner bore lathe grooving tool

Info

Publication number: CN101524765B
Application number: CN200910097358XA
Authority: CN
Inventors: 刘其红; 吴淼东
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-04-13
Filing date: 2009-04-13
Publication date: 2010-07-21
Anticipated expiration: 2029-04-13
Also published as: CN101524765A

Abstract

The invention relates to a small inner bore lathe grooving tool. A tool tip of a turning tool shelters in an eccentric sleeve small excircle and enters a component inner bore, the turning tool rotates in the eccentric sleeve, and the tool tip gradually reaches out of the eccentric sleeve small excircle to cut the component so as to process a groove in the inner bore. The eccentric sleeve is fixed in the bore in front of the tool body, the turning tool is arranged in an eccentric bore of the eccentric sleeve, a handle is fixed at the rear end of the tool holder of the turning tool, the tool tip of the turning tool and the handle are respectively arranged at two sides of the axle center of the tool holder; when the tool tip is within the eccentric sleeve small excircle, a small cylinder of the handle leans against the end face of a locating screw; when the turning tool rotates, the tool tip cuts the component outside the eccentric sleeve small excircle, when the other side of the small cylinder leans against the end face of the locating screw, the inner diameter formed by the tool tip processing component is the size needed by the component inner bore groove. The eccentric sleeve small excircle and the component inner bore have a clearance of 0.02-0.04 millimeter. The small inner bore lathe grooving tool can process the groove in the component small inner bore conveniently, precisely and economically, thus solving the challenge in machining.

Description

Small inner bore lathe grooving tool

Technical field

The present invention relates to metal cutting tool, the especially grooving insert of machine components processing.

Background technology

The groove that needs processing is arranged in the endoporus of some part in machine-building, under the big situation of interior hole dimension, generally on lathe, go out with the lathe tool car.Also can be with radially delivering gear processing on boring machine.As using Mr.'s Chen Shuo patent: 200410024574.9" radial feed boring tool " processes circlip slot, the O RunddichtringO groove in some hole in piece part.And hole dimension is little in the part that has, and groove wherein can't be got on the bus out at lathe, more can not process on boring machine.This problem is the difficult problem in the machining always.

Summary of the invention

The invention provides small inner bore lathe grooving tool, the groove in the part small size endoporus that on the equipment of lathe or similar lathe, is processed with.

The technical solution adopted for the present invention to solve the technical problems is: the lathe tool point of a knife is ensconced in the little cylindrical of eccentric bushing and is entered the part endoporus, and lathe tool rotates in eccentric bushing, and point of a knife stretches out the little external cutting part of eccentric bushing gradually, thereby processes the groove in the endoporus.

Small inner bore lathe grooving tool is made up of lathe tool, eccentric bushing, bolt, handle, cutter hub, soket head cap screw, dog screw and nut.Eccentric bushing is fixed by bolts to and makes the little cylindrical axial line of eccentric bushing and eccentric orfice axial line all with in cutter hub is installed parallel plane, bottom surface in the hole of cutter hub front, lathe tool is contained in the eccentric orfice of eccentric bushing, handle makes lathe tool that less clearance axially be arranged in eccentric orfice with the rear end that soket head cap screw is fixed on the lathe tool handle of a knife, on the lathe tool front end cutter head from lathe tool handle of a knife axial line farthest point of a knife and the line in handle of a knife axle center and handle axial line in same plane and point of a knife and handle respectively in the both sides in handle of a knife axle center; When the line in point of a knife and handle of a knife axle center in the plane of little cylindrical axial line of eccentric bushing and eccentric orfice axial line and point of a knife in the little cylindrical of eccentric bushing, the small column of handle leans against on the end face of a dog screw; When point of a knife beyond the little cylindrical of eccentric bushing, the opposite side of the small column of handle leans against on the end face of another dog screw, the internal diameter that the point of a knife processing parts forms is the size that hole slot needs in the part; Little cylindrical of eccentric bushing and part endoporus have 0.02～0.04 mm clearance.

The invention has the beneficial effects as follows, can make things convenient for, process the groove in the little endoporus of part accurately, economically, better solve this difficult problem in the machining.

Description of drawings

The present invention is further described below in conjunction with drawings and Examples.

Accompanying drawing is the installation diagram of small inner bore lathe grooving tool.

Fig. 1 is a front view.

Fig. 2 is the A-A cutaway view of Fig. 1.

Fig. 3 is the B-B cutaway view of Fig. 2.

Fig. 4 is the cutaway view that the C-C of Fig. 2 amplifies.

1. parts among the figure, 2. lathe tool, 3. eccentric bushing, 4. bolt, 5. handle, 6. cutter hub, 7. soket head cap screw, 8. dog screw, 9. nut.

The specific embodiment

Accompanying drawing is the small inner bore lathe grooving tool by the oil storage tank design in the processing 195 diesel injector needle-valve body endoporus.The needle-valve body endoporus is 6 millimeters of φ, and the maximum cylindrical of oil storage tank is 9.3 millimeters of φ.Difficulty of processing is very big.Small inner bore lathe grooving tool specific design scheme is seen accompanying drawing 1, accompanying drawing 2, accompanying drawing 3 and accompanying drawing 4.

In Fig. 2, the facet of bolt (4) front end holds out against and makes the little cylindrical axial line of eccentric bushing (3) and eccentric orfice axial line in the hole that eccentric bushing (3) is fixed on cutter hub (6) front on the plane of the big cylindrical of eccentric bushing (3) all in the plane parallel with cutter hub (6) installation bottom surface.Lathe tool (2) is contained in the eccentric orfice of eccentric bushing (3), and the facet of soket head cap screw (7) front end holds out against the rear end that handle (5) is fixed on lathe tool (2) handle of a knife on the plane of lathe tool (2) handle of a knife.Make lathe tool (2) that less clearance axially be arranged in eccentric orfice.

In Fig. 3, Fig. 4, on lathe tool (2) the front end cutter head from lathe tool (2) handle of a knife axial line farthest point of a knife and the line in handle of a knife axle center and handle (5) axial line in same plane and point of a knife and handle (5) respectively in the both sides in handle of a knife axle center; The point of a knife on lathe tool (2) cutter head and the line in handle of a knife axle center in the plane of little cylindrical axial line of eccentric bushing (3) and eccentric orfice axial line and point of a knife in the little cylindrical of eccentric bushing (3), see the position that two-dot chain line is represented in the accompanying drawing 4: the small column of handle (5) leans against on the end face of a dog screw (8).See the position that two-dot chain line is represented in the accompanying drawing 3.The grooving insert that be contained on the machine slide this moment enters in the endoporus that is clipped in the needle-valve body on the machine tool chief axis.Slowly turning handle (5) makes the cutter head of lathe tool (2) stretch out machined part gradually in the little cylindrical of eccentric bushing (3).When being worked into the size of oil storage tank.The opposite side of handle (5) small column leans against on the end face of another dog screw (8), and processing tasks is finished.Handle (5) rotates back into the home position, and grooving insert withdraws from slide carriage.Add and note man-hour:,, reprocess behind the cleaning iron filings so the turning handle of being careful (5) feed cutting can make lathe tool (2) reset in case of necessity and withdraw from because the iron filings that downcut in whole working angles can not in time be discharged.During work, little cylindrical of eccentric bushing (3) and part (1) endoporus have 0.02～0.04 mm clearance.Lathe tool (2) is used the high-speed tool steel manufacturing, heat treatment hardness 60～63HRC.

The major parameter of oil storage tank grooving insert design in the needle-valve body endoporus: the eccentric orfice of eccentric bushing (3) and lathe tool (2) handle of a knife diameter are 2.8 millimeters of φ, 0.95 millimeter of offset.The little cylindrical of eccentric bushing (3) is 5.8 millimeters of φ.Do not consider the influence of the manufacturing tolerance of each part of grooving insert, theoretical calculating: the point of a knife on lathe tool (2) cutter head is to the distance=5.8/2+0.95=3.85 millimeter of handle of a knife axial line, and the point of a knife on lathe tool (2) cutter head is to the ultimate range=3.85+0.95=4.8 millimeter of the little cylindrical axial line of eccentric bushing (3).9.6 millimeters of maximum cutting diameters=4.8 * 2=φ.Minimum wall thickness (MINI W.)=5.8/2-0.95-2.8/2=0.55 the millimeter at the little cylindrical of eccentric bushing (3) place.Design parameter can guarantee that grooving insert can process the groove of 9.3 millimeters of φ, and the surplus of reconditioning after the tool wear is arranged and remedy the surplus of each part manufacturing tolerance of grooving cutter.

Claims

1. small inner bore lathe grooving tool, by lathe tool, eccentric bushing, bolt, handle, cutter hub, soket head cap screw, dog screw and nut are formed, it is characterized in that: eccentric bushing is fixed by bolts to and makes the little cylindrical axial line of eccentric bushing and eccentric orfice axial line all with in cutter hub is installed parallel plane, bottom surface in the hole of cutter hub front, lathe tool is contained in the eccentric orfice of eccentric bushing, handle makes lathe tool that less clearance axially be arranged in eccentric orfice with the rear end that soket head cap screw is fixed on the lathe tool handle of a knife, on the lathe tool front end cutter head from lathe tool handle of a knife axial line farthest point of a knife and the line in handle of a knife axle center and handle axial line in same plane and point of a knife and handle respectively in the both sides in handle of a knife axle center; When the line in point of a knife and handle of a knife axle center in the plane of little cylindrical axial line of eccentric bushing and eccentric orfice axial line and point of a knife in the little cylindrical of eccentric bushing, the small column of handle leans against on the end face of a dog screw; When point of a knife beyond the little cylindrical of eccentric bushing, the opposite side of the small column of handle leans against on the end face of another dog screw, the internal diameter that the point of a knife processing parts forms is the size that hole slot needs in the part; Little cylindrical of eccentric bushing and part endoporus have 0.02～0.04 mm clearance.

2. small inner bore lathe grooving tool according to claim 1 is characterized in that: the facet of bolt front end holds out against in the hole that eccentric bushing is fixed on the cutter hub front on the plane of the big cylindrical of eccentric bushing.

3. small inner bore lathe grooving tool according to claim 1 is characterized in that: the facet of soket head cap screw front end holds out against the rear end that handle is fixed on the lathe tool handle of a knife on the plane of lathe tool handle of a knife.

4. small inner bore lathe grooving tool according to claim 1 is characterized in that: lathe tool high-speed tool steel manufacturing, heat treatment hardness 60～63HRC.