CN204075320U

CN204075320U - Valve seat orifice forming cutter

Info

Publication number: CN204075320U
Application number: CN201420379121.7U
Authority: CN
Inventors: 朱松林; 廖志雄
Original assignee: Zhongshan Torch Development Zone Garden Tool Factory (general Partnership)
Current assignee: ZHONGSHAN YUANFENG PRECISION CUTTING TOOL CO., LTD.
Priority date: 2014-07-09
Filing date: 2014-07-09
Publication date: 2015-01-07
Anticipated expiration: 2024-07-09

Abstract

The utility model discloses a kind of valve seat orifice forming cutter, it is characterized in that: comprise knife bar, knife bar end symmetric is provided with chip area, and be provided with the profiled section of the descending change of diameter successively, fraising section and boring section, described chip area extends to profiled section by knife bar, fraising section and boring section, and profiled section, fraising section and boring section are divided into the two parts be oppositely arranged by chip area, every part of described boring section includes a taper point of a knife, described point of a knife is provided with boring rake face, after holing with first knife face and with this first hole after crossing second the holing afterwards knife face of knife face, every part of described fraising section is equipped with fraising rake face, knife face and the rear knife face of the second fraising after first fraising, the shoulder of every part of described fraising section is equipped with transition rake face, knife face after knife face and the second transition after First Transition, the shoulder of every part of described profiled section is provided with shaping rake face, first shaping rear knife face and the second shaping rear knife face.

Description

Valve seat orifice forming cutter

Technical field

The utility model relates to a kind of process tool, particularly a kind of valve seat orifice forming cutter.

Background technology

For processing the valve seat of compressor of air conditioner, this valve seat is high to required precision, require when being sealed and matched to leak gas, the common cutter of employing in the past adds man-hour to this valve seat, need to be divided into multiple step and use multiple cutter instead and just can machine, changing step, in rapid process, to reorientate after all needing clamping at every turn, thus causing precision to be difficult to ensure.

Summary of the invention

In order to overcome the deficiencies in the prior art, the valve seat orifice forming cutter that the utility model provides a kind of machining accuracy high.

The utility model solves the technical scheme that its technical problem adopts:

Valve seat orifice forming cutter, it is characterized in that: comprise knife bar, knife bar end symmetric is provided with chip area, and be provided with the profiled section of the descending change of diameter successively, fraising section and boring section, described chip area extends to profiled section by knife bar, fraising section and boring section, and profiled section, fraising section and boring section are divided into the two parts be oppositely arranged by chip area, every part of described boring section includes a taper point of a knife, described point of a knife is provided with boring rake face, after first boring knife face and with this first hole after crossing second the holing rear knife face of knife face, every part of described fraising section is equipped with fraising rake face, knife face and the rear knife face of the second fraising after first fraising, the shoulder of every part of described fraising section is equipped with transition rake face, knife face after knife face and the second transition after First Transition, the shoulder of every part of described profiled section is provided with shaping rake face, first shaping rear knife face and the second shaping rear knife face, described boring rake face, fraising rake face, the cell wall that transition rake face and shaping rake face are chip area is formed.

Described first shaping rear knife face is crossing with shaping rake face forms cutting edge, and this cutting edge is connected and composed by the camber line of three sections of different radians and one section of straight line.

The camber line of described three sections of different radians is respectively R1, R2, R3, and 0.2mm≤R1≤0.4mm, 0.8mm≤R2≤1mm, 0.2mm≤R3≤0.4mm.

After described fraising rake face and first reams, knife face at an angle of 90.

The rear knife face of described first fraising is an arcwall face, and after described fraising rake face and first reams, knife face is crossing forms the cutting edge that reams, and knife face inclination reduction after this arcwall face edge fraising cutting edge to the first fraising.

The beneficial effects of the utility model are: this valve seat orifice forming cutter comprises knife bar, knife bar end symmetric is provided with chip area and is provided with the profiled section of the descending change of diameter, fraising section and boring section successively, described chip area extends to profiled section, fraising section and boring section by knife bar, thus boring, reaming and fraising can correspondingly be completed by different active sections, the operation of limit, aperture plane epirelief loop forming, only need one-time positioning just can complete above-mentioned all process steps, not only working (machining) efficiency is high, and ensure that machining accuracy.

Accompanying drawing explanation

Below in conjunction with drawings and Examples, the utility model is further illustrated.

Fig. 1 is three-dimensional view of the present utility model;

Fig. 2 is front view of the present utility model;

Fig. 3 of the present utility modelly attachedly looks enlarged drawing;

Fig. 4 is the zoomed-in view at A place in Fig. 2.

Detailed description of the invention

Referring to figs. 1 through Fig. 4, the utility model discloses a kind of valve seat orifice forming cutter, comprise cylinder shape knife rod 1, knife bar end symmetric is provided with chip area 2, and be provided with the profiled section 3 of the descending change of diameter successively, fraising section 4 and boring section 5, described chip area 2 extends to profiled section 3 by knife bar, fraising section 4 and boring section 5, and profiled section 3, fraising section 4 and boring section 5 are divided into the two parts be oppositely arranged by chip area 2, every part of described boring section 5 includes a taper point of a knife 6, described point of a knife 6 is provided with boring rake face, after first boring knife face 7 and with this first hole after crossing second the holing rear knife face 8 of knife face 7, taper point of a knife 6 and the rear knife face 7 of the first boring for holing on valve seat, every part of described fraising section 4 is equipped with fraising rake face, knife face 9 and the rear knife face 10 of the second fraising after first fraising, can be finish reamed hole by knife face 9 after the first fraising, thus obtain the smoothness of the higher aperture size of precision and hole wall, the shoulder of every part of described fraising section 4 is equipped with transition rake face, knife face 11 after knife face (not shown) and the second transition after First Transition, after First Transition, knife face formed intersection crossing with chip area 2 wall is that a skew lines forms Transitional cut sword, because Transitional cut sword is used for reaming, so Transitional cut sword is a skew lines, be convenient to expand hole to preliminary dimension gradually, the shoulder of every part of described profiled section 3 is provided with shaping rake face, first shaping rear knife face 12 and the second shaping rear knife face 13, the processing of the first shaping rear knife face 12 bulge loop in the processing and plane of limit, predetermined aperture plane, this bulge loop and plane be valve base sealing coordinate important sealing contact surface, thus required precision is high, described boring rake face, fraising rake face, the cell wall that transition rake face and shaping rake face are chip area is formed.

As shown in the figure, first shaping rear knife face 12 is crossing with shaping rake face forms shaping cutting edge, this forming and cutting sword is connected and composed by the camber line of three sections of different radians and one section of straight line, the camber line of described three sections of different radians is respectively R1, R2, R3, and 0.2mm≤R1≤0.4mm, 0.8mm≤R2≤1mm, 0.2mm≤R3≤0.4mm, can process the shape of predetermined bulge loop by above-mentioned three sections of camber lines.

Further, after described first fraising, knife face 9 is an arcwall face, described fraising rake face and the rear knife face 9 of the first fraising intersect formation fraising cutting edge, and this arcwall face tilts to reduce along the rear knife face 10 of fraising cutting edge to the second fraising, arranged by said structure, cutter is in free-cutting process, and the change of cutting output is less, thus it is high to reach cutting precision, highly polished effect.

Further, after described fraising rake face and first reams, knife face 9 at an angle of 90, because fraising rake face angle is arranged in said structure, make the cutting force of fraising cutting edge more weak, thus the amount of its unit interval cutting is little, thus it is high to reach cutting precision, highly polished effect.

Above to a kind of valve seat orifice forming cutter that the utility model embodiment provides, be described in detail, apply specific case herein to set forth principle of the present utility model and embodiment, the explanation of above embodiment just understands method of the present utility model and core concept thereof for helping; Meanwhile, for one of ordinary skill in the art, according to thought of the present utility model, all will change in specific embodiments and applications, in sum, this description should not be construed as restriction of the present utility model.

Claims

1. valve seat orifice forming cutter, it is characterized in that: comprise knife bar, knife bar end symmetric is provided with chip area, and be provided with the profiled section of the descending change of diameter successively, fraising section and boring section, described chip area extends to profiled section by knife bar, fraising section and boring section, and profiled section, fraising section and boring section are divided into the two parts be oppositely arranged by chip area, every part of described boring section includes a taper point of a knife, described point of a knife is provided with boring rake face, after first boring knife face and with this first hole after crossing second the holing rear knife face of knife face, every part of described fraising section is equipped with fraising rake face, knife face and the rear knife face of the second fraising after first fraising, the shoulder of every part of described fraising section is equipped with transition rake face, knife face after knife face and the second transition after First Transition, the shoulder of every part of described profiled section is provided with shaping rake face, first shaping rear knife face and the second shaping rear knife face, described boring rake face, fraising rake face, the cell wall that transition rake face and shaping rake face are chip area is formed.

2. valve seat orifice forming cutter according to claim 1, is characterized in that: described first shaping rear knife face is crossing with shaping rake face forms cutting edge, and this cutting edge is connected and composed by the camber line of three sections of different radians and one section of straight line.

3. valve seat orifice forming cutter according to claim 2, is characterized in that: the camber line of described three sections of different radians is respectively R1, R2, R3, and 0.2mm≤R1≤0.4mm, 0.8mm≤R2≤1mm, 0.2mm≤R3≤0.4mm.

4. valve seat orifice forming cutter according to claim 1, is characterized in that: after described fraising rake face and first reams, knife face at an angle of 90.

5. valve seat orifice forming cutter according to claim 1, it is characterized in that: after described first fraising, knife face is an arcwall face, described fraising rake face and the rear knife face of the first fraising crossing formation fraising cutting edge, and this arcwall face tilts to reduce along the rear knife face of cutting edge to the first fraising that reams.