CN206296474U

CN206296474U - Groove processing NC cutting tool in bellows

Info

Publication number: CN206296474U
Application number: CN201621371146.8U
Authority: CN
Inventors: 马玉山; 秦新文; 常占东; 周永兴; 张耀华
Original assignee: Wuzhong Instrument Co Ltd
Current assignee: Wuzhong Instrument Co Ltd
Priority date: 2016-12-14
Filing date: 2016-12-14
Publication date: 2017-07-04
Anticipated expiration: 2026-12-14

Abstract

The utility model is related to Cutting Tool Technology Used on NC field, more particularly to groove processing NC cutting tool in a kind of bellows, including handle of a knife, knife bar and cutter head, the rear end integrative-structure of handle of a knife and knife bar, the front end integrative-structure of cutter head and knife bar, the anterior angle γ of cutter head is 57 °, and continuous chip removal is easy to when can cause that cutter head works；Relief angle α is 30 35 °, can cause that cutter head is sharper, one-shot forming between processing groove；Knife drift angle β is 23 °, is prevented from cutter head and bellows adhesion and swaging clamp.Cutting edge is the circular arc line of evagination, is just engaged with the root of groove.Groove processing NC cutting tool in bellows of the present utility model, according to the design feature of bellows, using groove processing NC cutting tool in bellows come the groove of machining bellows, on numerically controlled lathe, with one-shot forming, the features such as high intensity, high tenacity, accurate processing, efficiency high.

Description

Groove processing NC cutting tool in bellows

Technical field

The utility model is related to groove processing NC cutting tool in Cutting Tool Technology Used on NC field, more particularly to a kind of bellows.

Background technology

Bellows is the strength member (see attached Fig. 1 and 2) of HPF lining plastic bellows regulating valves, and material is polytetrafluoroethylene (PTFE).Its Endoporus has ten wide by 2 ± 0.05, depth 10mm grooves as deep as 130mm in hole, groove root 5 is R1 circular arcs.Want quick and precisely Completion groove 1 processing, as bellows processing technological difficulties.

Utility model content

The technical problems to be solved in the utility model is：In order to fast and accurately process groove, the utility model is carried For groove processing NC cutting tool in a kind of bellows.

The utility model solves the technical scheme that its technical problem used：Groove processing numerical control knife in a kind of bellows The front end integrative-structure of the rear end integrative-structure of tool, including handle of a knife, knife bar and cutter head, handle of a knife and knife bar, cutter head and knife bar, it is described The anterior angle γ of cutter head is 5-7 °, preferably 5 °, continuous chip removal is easy to when can cause that cutter head works；Relief angle α is 30-35 °, preferably It is 35 °, can causes that cutter head is sharper, one-shot forming between processing groove；Knife drift angle β is 2-3 °, and preferably cutting edge is 2 °, it is prevented from cutter head and bellows adhesion and swaging clamp.Cutting edge is the circular arc line of evagination, and just the root with groove matches Close.

Point of a knife skew main shaft (main shaft of knife bar) center line of the cutter head, is easy to operator's centering center.

The beneficial effects of the utility model are, groove processing NC cutting tool in bellows of the present utility model, according to bellows Design feature, using groove processing NC cutting tool in bellows come the groove of machining bellows, on numerically controlled lathe, have The features such as one-shot forming, high intensity, high tenacity, accurate processing, efficiency high.

Brief description of the drawings

The utility model is further illustrated with reference to the accompanying drawings and examples.

Fig. 1 is the structural representation in bellows.

Fig. 2 is the enlarged drawing at A in Fig. 1.

Fig. 3 is the front view of groove processing NC cutting tool in the utility model bellows.

Fig. 4 is the B-B sectional views of Fig. 3.

Fig. 5 is the C-C sectional views of Fig. 3.

Fig. 6 is the D-D sectional views of Fig. 3.

Fig. 7 is the dimensional structure diagram of groove processing NC cutting tool in the utility model bellows.

In figure：1st, handle of a knife, 2, knife bar, 3, cutter head, 4, cutting edge, 5, groove root.

Specific embodiment

The utility model is described in further detail presently in connection with accompanying drawing.These accompanying drawings are simplified schematic diagram, Basic structure of the present utility model is only illustrated in a schematic way, therefore it only shows the composition relevant with the utility model.

As illustrated in figs. 2-7, it is the utility model optimum embodiment, groove processing NC cutting tool in a kind of bellows, including knife The front end integrative-structure of the rear end integrative-structure of handle 1, knife bar 2 and cutter head 3, handle of a knife 1 and knife bar 2, cutter head 3 and knife bar 2, cutter head 3 Anterior angle γ be 5-7 °, relief angle α be 30-35 °, knife drift angle β be 2-3 °, cutting edge 4 for evagination circular arc line.The point of a knife of cutter head 3 Skew main shaft (main shaft of knife bar 2) center line.In order to meet the processing of numerically controlled lathe, point of a knife off center distance is L, and L is 1mm.Not only intensity is high for such cutter, while also than sharp, processing polytetrafluoroethylregenerated bellows, its surface roughness is complete The requirement of drawing can be met, one stroke (handle of a knife turns around) can just process the groove of bellows.

Groove processing NC cutting tool material selection W6Mo5Cr4V2 (W6) high-speed tool steel in bellows, hardness HRC60-66, Intensity is high, and thermoplasticity is good, and heat resistance, wearability are functional, meets the requirement of processing polytetrafluoroethylregenerated material.Ordinary steel can be used Beautiful wheel grinding, its efficiency improves several times than the carbon tool steel and alloy tool steel in past.

The design of handle of a knife 1 can be directly installed in the broach shell of numerically controlled lathe, and the plane of handle of a knife 1 is held out against with screw, you can To realize the processing of bellows.

With above-mentioned according to desirable embodiment of the present utility model as enlightenment, by above-mentioned description, related work people Member can carry out various changes and amendments in the range of without departing from this utility model technological thought completely.This reality The content on specification is not limited to new technical scope, it is necessary to its technology is determined according to right Property scope.

Claims

1. groove processing NC cutting tool in a kind of bellows, it is characterised in that：Including handle of a knife (1), knife bar (2) and cutter head (3), handle of a knife (1) and knife bar (2) rear end integrative-structure, the front end integrative-structure of cutter head (3) and knife bar (2), the anterior angle γ of the cutter head (3) It it is 5-7 °, relief angle α is 30-35 °, and knife drift angle β is 2-3 °, and cutting edge (4) is the circular arc line of evagination.

2. groove processing NC cutting tool in bellows as claimed in claim 1, it is characterised in that：The point of a knife of the cutter head (3) is inclined Shift spindle center line.