CN2101536U

CN2101536U - Cutting force self tighten transposition and regrounding cutting-out lathe tool

Info

Publication number: CN2101536U
Application number: CN 91205291
Authority: CN
Inventors: 薛端石
Original assignee: Individual
Current assignee: Individual
Priority date: 1991-03-30
Filing date: 1991-03-30
Publication date: 1992-04-15

Abstract

The utility model discloses a cutting force self-tighten capable of transposition and regrinding cutting-out lathe tool, belonging to the field of metal cutting tools. The utility model is characterized in that a tool bit such as the hard metal is studded onto a piece of metal base using the method of the welding or the adhesive connection to compose a cutter blade capable of rotating position. The cutter blade is inserted into a cutter body which is inserted into a cutter holder, which is in the condition of elastic clamp. The cutter blade is locked by the cutting force when cutting, the cutter blade can be reground after abrasion, and the extend length of the cutter blade can be adjusted with a spacer block. The utility model has the advantages of improving the utilization ratio of the tool tip materials, saving the cost and keeping the fast changing cutter of mechanical clamped cutting tools.

Description

Cutting force self tighten transposition and regrounding cutting-out lathe tool

The utility model relates to a kind of metal cutting tool, and particularly a kind of cutting force that relies on is locked the parting-off tool that blade is indexable, cutter head can be refaced.

Background technology about parting-off tool can be divided into two class formations haply both at home and abroad; One class is a machine folder cutoff tool; One class is a welding assembled cutoff tool, related data can referring to:

1, Sweden SANDV1KCoromant company product sample in 1989;

2, " advanced cutter and cutting technology " P73 to 85 page, former first information institute of Ministry of Machine-Building Industry compiles, and publish in May, 1980.

Make a general survey of above-mentioned prior art, all machine folder cutoff tools, its common drawback is that the carbide bit stock utilization is very low, has only 1/3 can use substantially; Described welding assembled cutoff tool though tool tip material can use repeatedly by refacing, is not really broken away from brazed shank tool cutter hub high material consumption, tool changing long deadly defect non-cutting time.

The purpose of this utility model is to avoid above-mentioned the deficiencies in the prior art part and provides a kind of cutting force self-tightening the indexable parting-off tool of refacing, and this parting-off tool can make full use of expensive tool tip material, prolongs cutter life, saves cost; Can realize rapid changing knife again, reduce unproductive time, raise labour productivity.

The purpose of this utility model can reach by following measure: two carbide bit 1 usefulness welding or bonding method are connected on the fritter quadrangle metallic matrix, and cutter head becomes the anti-phase layout of diagonal, becomes indexable insert tip, throw away tip 2.The blade both sides are plugged in the cutter hub 3 corresponding type grooves 6 with seamed edge.Cutter hub 3 is plugged in the elasticity cutter holder 4 corresponding type grooves 7 with two lateral edges again.Thereby the small tool of lathe compresses cutter holder 4 and clamps cutter hub.The horizontal component of cutting force passes to cutter hub by blade during cutting; The rotating torque that vertical stress component forms on blade is the resisting moment institute balance that cutter hub elastic type groove produces, and blade is in cutting force self-tightening state.Behind tool bit abrasion or the tipping, can reface together with matrix, when the blade spread length was not enough, the curtain formula that can increase proper width between blade behind and cutter hub load-carrying surface was adjusted cushion block 5.

Be not difficult to find out, utilize design of the present utility model, with cutter head be ground to difformity or with the supporting use of multiple blade, can finish such as car periphery, chamfering, cut different needs such as end face groove, cutting thread, expand the scope of application.

The utility model has following advantage compared to existing technology:

One, compares with machine folder cutoff tool

1, cutter head can be refaced, and the tool tip material utilization rate is three times of machine folder cutoff tool near 100%.Greatly reduce the cost of charp tool.

2, simple in structure, it is more firm than clamped cutting bit to clamp, and is example with lever machine folder cutoff tool, and briquetting in theory also can only be the line contact with contacting of cutter head, because the problem of manufacturing process is actually a contact.

3, cutting off diameter can adjust significantly, and the cutter head anterior angle can be selected arbitrarily, can adapt to varying strength cutting requirement.

4, tool-changing speed is the same with clamped cutting bit, even faster.

5, cutter head is ground to difformity or with the supporting use of multiple blade.Can finish such as car outer garden, chamfering, cut needs such as end face groove, cutting thread, enlarge function.

Two, comparing advantage with welding assembled cutoff tool is:

1, save the cutter hub material greatly, actual loss is the blade base material except that cutter head just.

2, have mechanical clamped cutting tool tool changing characteristics fast, can save a large amount of unproductive times.

The drawing of accompanying drawing is described as follows:

Fig. 1 is the utility model overall structure front view.1 cutter head among the figure; 2 blades; 3 cutter hubs; 4 cutter holders; 5 curtain formulas are adjusted cushion block;

Fig. 2 A-A is the utility model cross section view;

Fig. 3 is the blade front view;

Fig. 4 B-B is the blade cross section cutaway view;

Fig. 5 cutter hub front view, wherein 6 cutter hub type grooves;

Fig. 7 is a cutter holder outward appearance axonometric drawing.7 cutter holder type grooves wherein;

Fig. 8 adjusts the cushion block axonometric drawing for the curtain formula.

The utility model is described in further detail below in conjunction with accompanying drawing: Fig. 3, Fig. 4 have showed the mutual alignment and the annexation of cutter head and blade base, cutter head is embedded in the parallelogram base frame, in same plane, be the anti-phase layout of diagonal, tool tip material can be a carbide alloy, also can be high-speed steel, cubic boron nitride or ceramic-metal composite.Connected mode can be used silver soldering; Brazing, high-frequency welding or bonding with bonding agent, blade up and down both sides are plugged in the corresponding type groove 6 of cutter hub with the triangle seamed edge, and the seamed edge shape also can be swallow-tail form, arc, squarely not limit.

Fig. 5, Fig. 6 have shown structure of the cutter body, cutter hub is lamellar part, two ends have the type groove that patches blade in the other direction, being point symmetry in same plane arranges, cutter hub is plugged in the elasticity cutter holder 4 corresponding type grooves 7 with the triangle seamed edge both sides up and down, the seamed edge shape also can be swallow-tail form, arc, squarely not limit, and cutter hub is also indexable.

Fig. 7 has shown holder structure.Cutter holder is blocks, middle fluting, and otch one side has triangle type groove or its alloytype groove that patches cutter hub, makes the cutter holder cross section be pincerlike structure.This structure high resilience is beneficial to loading and unloading, clamps cutter hub.

Fig. 8 has represented the geometrical body of curtain formula adjustment cushion block, and it is blade base R-cut body along the plumb line direction when installation is put.

Claims

1, the indexable parting-off tool of refacing of a kind of cutting force self-tightening, cutter head 1 is arranged, cutter hub 3 and cutter holder 4, it is characterized in that: indexable insert tip, throw away tip 2 is that two cutter heads are connected on the fritter quadrangle metallic matrix, become the anti-phase layout of diagonal, the blade both sides are plugged in the cutter hub 3 corresponding type grooves 6 with seamed edge, and cutter hub 3 is plugged in the cutter holder 4 corresponding type grooves 7 with two lateral edges again, can increase the curtain formula and adjust cushion block 5 between blade behind and cutter hub load-carrying surface.

2, the indexable parting-off tool of refacing of cutting force self-tightening according to claim 1 is characterized in that being connected of cutter head 1 and blade 2 can using welding or bonding.

3, the indexable parting-off tool of refacing of cutting force self-tightening according to claim 1 and 2 is characterized in that tool tip material can be carbide alloy or cubic boron nitride or high-speed steel or ceramic-metal composite.

4, the indexable parting-off tool of refacing of cutting force self-tightening according to claim 1, the geometrical body that it is characterized in that curtain formula cushion block 5 are blade base R-cut bodies along the plumb line direction when the installation site.

5, the indexable parting-off tool of refacing of cutting force self-tightening according to claim 1 is characterized in that cutter hub 3 two ends respectively have a type groove 6 for the blade insertion.

6, the indexable parting-off tool of refacing of cutting force self-tightening according to claim 1 is characterized in that cutter holder 4 is the pincerlike structure of rubber-like, and opening one side has can be for the type groove 7 of cutter hub insertion.