CN205218085U

CN205218085U - Cutter of inner chamber facing suitable for horizontal through -hole has

Info

Publication number: CN205218085U
Application number: CN201521027883.1U
Authority: CN
Inventors: 宋晓光; 赵明杰; 崔青勇
Original assignee: Changzhou CSR Diesel Engine Parts Co Ltd
Current assignee: Changzhou CRRC Diesel Engine Parts Co Ltd
Priority date: 2015-12-10
Filing date: 2015-12-10
Publication date: 2016-05-11
Anticipated expiration: 2025-12-10

Abstract

The utility model discloses a cutter of inner chamber facing suitable for horizontal through -hole has, including tool bit portion, cutter arbor, handle of a knife and blade, tool bit portion and cutter arbor formula structure as an organic whole, the cutter arbor transversely sets up, and including cutter arbor main part, transition portion and handle of a knife cooperation portion, the vertical setting of tool bit portion is in the one end of cutter arbor main part, and handle of a knife cooperation portion is connected through transition portion to the other end of cutter arbor main part, the handle of a knife passes through the bolt and is connected with handle of a knife cooperation portion, the diameter D2 of transition portion > the diameter D1 of cutter arbor main part, the blade sets up the tip in tool bit portion. The utility model discloses a cutter can guarantee that machining plane and pinhole hang down straightness, plane and to the geometric tolerances such as symmetry of excircle, be applicable to the inner chamber facing that has horizontal through -hole.

Description

A kind of cutter being applicable to the inner chamber plane machining with cross through hole

Technical field

The utility model relates to a kind of cutter being applicable to have the inner chamber plane machining of cross through hole.

Background technology

In mechanical processing process, the plane had after a variety of through hole needs processing, this type of processing technology mainly contains following 3 kinds of modes at present: directly use milling cutter or countersink processing 1), from the negative, it is the workpiece of open area that this scheme is applicable to through hole reverse side plane; 2), use anti-countersink, in hole, insert knife bar, then by countersink from loading knife bar, reverse drawing plane machining.It is the situation of circular flat that this scheme is applicable to processing antiplane, and can only use on boring machine, cannot use this scheme by the work in-process heart; 3) if bore dia is comparatively large, entered by knife bar, directly carry out reverse drawing processing in hole, this processing scheme is by through-hole diameter size restriction processing plane size.

If when this plane and through hole have very high Geometrical Tolerance Principle, through hole and plane clamped one time must be adopted to complete processing, and above three kinds of schemes are all subject to the restriction of workpiece shapes and size, acomia use universal cutter processing plane, and the unsuitable cutter machining directly this plane of processing after through hole in the market.

Utility model content

The purpose of this utility model is to provide a kind of cutter being applicable to the inner chamber plane machining with cross through hole simply, efficiently.

The technical scheme realizing the utility model object is a kind of cutter being applicable to have the inner chamber plane machining of cross through hole, comprises cutter head portion, knife bar, handle of a knife and blade; Described cutter head portion and knife bar are integral type structure; Described knife bar horizontally set, comprise knife bar main body, transition part and handle of a knife auxiliary section, cutter head portion is vertically arranged on one end of knife bar main body, and the other end of knife bar main body connects handle of a knife auxiliary section by transition part; Handle of a knife is connected with handle of a knife auxiliary section by bolt; The diameter D1 of the diameter D2 > knife bar main body of described transition part; Described blade is arranged on the end in cutter head portion.

Described tool dimension meets: R1+D1/2 < D3, wherein R1 is the cutter radius of gyration, and D1 is the diameter of knife bar main body, and D3 is the diameter of the cross through hole of workpiece to be processed.

Described tool dimension meets: L3 > L1, wherein L3 is the length of handle of a knife auxiliary section, and L1 is the thickness of front end, cutter head portion.

Described tool dimension meets: L2 > (D4-L4)/2, wherein L2 is the length of knife bar main body, and D4 is the outside diameter of workpiece to be processed, and L is the inner space width of the cross through hole of workpiece to be processed.

Described tool dimension meets: R2 < R1-H+/2, wherein R2 is the plane arc radius of workpiece to be processed, and R1 is the cutter radius of gyration, and H is the plane circular arc offset height of workpiece to be processed, D3 is the diameter of the cross through hole of workpiece to be processed, and D1 is the diameter of knife bar main body.

Have employed technique scheme, the utility model has following positive effect: (1) cutter of the present utility model can ensure processing plane and the form and position tolerance such as pin-and-hole perpendicularity, plane symmetry to foreign round, is applicable to the inner chamber plane machining with cross through hole.

(2) cutter structure of the present utility model is simple, directly processes inner plane by cross through hole, optimizes processing mode, improve working (machining) efficiency remarkable in economical benefits.

Accompanying drawing explanation

In order to make content of the present utility model more easily be clearly understood, below according to specific embodiment also by reference to the accompanying drawings, the utility model is described in further detail, wherein

Fig. 1 is the structural representation of cutter of the present utility model.

Fig. 2 is the left view of Fig. 1.

Fig. 3 is the structural representation of workpiece to be processed.

Fig. 4 is the C direction view of Fig. 3.

Attached number in the figure is:

Cutter head portion 1, knife bar 2, knife bar main body 21, transition part 22, handle of a knife auxiliary section 23, handle of a knife 3, blade 4, bolt 5.

Detailed description of the invention

(embodiment 1)

See Fig. 1 and Fig. 2, a kind of cutter being applicable to the inner chamber plane machining with cross through hole of the present embodiment, is characterized in that: comprise cutter head portion 1, knife bar 2, handle of a knife 3 and blade 4; Cutter head portion 1 and knife bar 2 are integral type structure; Knife bar 2 horizontally set, comprise knife bar main body 21, transition part 22 and handle of a knife auxiliary section 23, cutter head portion 1 is vertically arranged on one end of knife bar main body 21, and the other end of knife bar main body 21 connects handle of a knife auxiliary section 23 by transition part 22; Handle of a knife 3 is connected with handle of a knife auxiliary section 23 by bolt 5; Blade 4 is arranged on the end in cutter head portion 1.

The concrete size of cutter meets following condition:

(1)D2＞D1；

(2) R1+D1/2 < D3; Make cutter freely can enter inner chamber;

(3) L4 > L1; Thus, cutter can rotate and processing plane in inner chamber;

(4)L2＞(D4-L4)/2，

(5)R2＜R1-H+(D3-D1)/2。

See Fig. 3 and Fig. 4 simultaneously, wherein: D1 is the diameter of knife bar main body 21, D2 is the diameter of transition part 22, D3 is the diameter of the cross through hole of workpiece to be processed, D4 is the outside diameter of workpiece to be processed, R1 is the cutter radius of gyration, R2 is the plane arc radius of workpiece to be processed, L1 is the thickness of front end, cutter head portion 1, L2 is the length of knife bar main body 21, and L3 is the length of handle of a knife auxiliary section 23, and L4 is the inner space width of the cross through hole of workpiece to be processed, the plane circular arc offset height that H is workpiece to be processed, d is the diameter of handle of a knife auxiliary section 23.

During Cutter Body Processing with Machining Center this type of part as shown in Figure 3 and Figure 4, existing method is: (1) can pass through upper port feed, and work in-process carries out Three-dimension process in the heart, and this processing mode is time-consuming and cannot ensure the perpendicularity in plane and hole; (2) on boring machine, use boring cutter bar to carry out boring processing, processing tool changing is cumbersome, and this processing mode cannot ensure the symmetry of plane and cylindrical.Adopt the cutter of the present embodiment then can process: after completing through hole processing, cutter head portion 1 and knife bar 2 are stretched in part, enter rear knife bar 2 moves and avoid machining area, then knife bar 2 rotates and moves according to processing route, after processing plane, at the locked main shaft of non-machining area, knife bar 2 shifts out.

Above-described specific embodiment; the purpose of this utility model, technical scheme and beneficial effect are further described; be understood that; the foregoing is only specific embodiment of the utility model; be not limited to the utility model; all within spirit of the present utility model and principle, any amendment made, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.

Claims

1. be applicable to a cutter for the inner chamber plane machining with cross through hole, it is characterized in that: comprise cutter head portion (1), knife bar (2), handle of a knife (3) and blade (4); Described cutter head portion (1) and knife bar (2) are integral type structure; Described knife bar (2) horizontally set, comprise knife bar main body (21), transition part (22) and handle of a knife auxiliary section (23), cutter head portion (1) is vertically arranged on one end of knife bar main body (21), and the other end of knife bar main body (21) connects handle of a knife auxiliary section (23) by transition part (22); Handle of a knife (3) is connected with handle of a knife auxiliary section (23) by bolt (5); The diameter D1 of diameter D2 > knife bar main body (21) of described transition part (22); Described blade (4) is arranged on the end of cutter head portion (1).

2. a kind of cutter being applicable to the inner chamber plane machining with cross through hole according to claim 1, it is characterized in that: described tool dimension meets: R1+D1/2 < D3, wherein R1 is the cutter radius of gyration, D1 is the diameter of knife bar main body (21), and D3 is the diameter of the cross through hole of workpiece to be processed.

3. a kind of cutter being applicable to the inner chamber plane machining with cross through hole according to claim 2, it is characterized in that: described tool dimension meets: L3 > L1, wherein L3 is the length of handle of a knife auxiliary section (23), and L1 is the thickness of cutter head portion (1) front end.

4. a kind of cutter being applicable to the inner chamber plane machining with cross through hole according to claim 3, it is characterized in that: described tool dimension meets: L2 > (D4-L4)/2, wherein L2 is the length of knife bar main body (21), D4 is the outside diameter of workpiece to be processed, and L4 is the inner space width of the cross through hole of workpiece to be processed.

5. a kind of cutter being applicable to the inner chamber plane machining with cross through hole according to claim 4, it is characterized in that: described tool dimension meets: R2 < R1-H+ (D3-D1)/2, wherein R2 is the plane arc radius of workpiece to be processed, R1 is the cutter radius of gyration, H is the plane circular arc offset height of workpiece to be processed, D3 is the diameter of the cross through hole of workpiece to be processed, and D1 is the diameter of knife bar main body (21).