CN203565891U

CN203565891U - Turning tool

Info

Publication number: CN203565891U
Application number: CN201320711247.5U
Authority: CN
Inventors: 赵强; 徐舟; 傅名伟; 李剑飞; 宁雄; 杨志利; 刘晨星; 盛波
Original assignee: China National South Aviation Industry Co Ltd
Current assignee: AECC South Industry Co Ltd
Priority date: 2013-11-11
Filing date: 2013-11-11
Publication date: 2014-04-30
Anticipated expiration: 2023-11-11

Abstract

The utility model discloses a turning tool which comprises a tool handle (10) and a tool bit (20). The tool handle (10) is connected with the tool bit (20), the tool bit (20) comprises a cutting section (21) and an avoid section, the cutting section (21) and the avoid section are mutually connected, the avoid section comprises a cylinder section (22) and a cone section (23), and the cone section (23) is arranged between the tool handle (10) and the cylinder section (22). According to the technical scheme, the turning tool effectively solves the problem that the inner conical surface of a nozzle and an oil spit hole are difficult to turn in the prior art.

Description

Lathe tool

Technical field

The utility model relates to machine tools technical field, in particular to a kind of lathe tool.

Background technology

For the processing of little high-precision micro jet parts, domestic main manufacturer is distributed in the ground such as Xi'an, Beijing, Shanghai, Zhuzhou and Guizhou.At present, fine aperture (for example aperture is φ 0.3mm) is mainly adopted processing in two ways, and the first processing mode is to adopt spark machined, and the second processing mode is drilling processing.After spark machined and drilling processing, adopt abrasive Flow or aperture is carried out to polishing improve surface quality and the elimination of aperture or reduce and Micro Step that it joins between profile by hand.

In fact spark machined is exactly galvano-cautery processing, can form at workpiece machining surface the metamorphic layer (re cast layer or white layer) of pit shape after processing, and the structure of this layer changes, but also easily produces micro-crack.Therefore, adopt spark machined minute aperture, have larger hidden danger of quality.

Drilling processing is to utilize microbit to process fine aperture, and microbit easily causes aperture circularity and surface roughness not to reach designing requirement, thereby affects the performance test effect of nozzle assembly.

By hand aperture being carried out to polishing is generally to utilize cork rod to dip in abrasive pastes by hand to carry out polishing, and effect varies with each individual, and often occurs that aperture becomes ellipse phenomenon.The operation principle of abrasive Flow is that fixture coordinates workpiece to form processing channel, and two relative abrasive material cylinders squeeze back and forth abrasive material in processing channel, and abrasive material grinds channel surface.Affected by the factors such as abrasive grain, extruding force and cycle-index, when fine aperture is ground, very easily cause the size of fine aperture bigger than normal, do not reach the processing request of part.

The processing of the nozzle opening in spout and the coupled both sides conical surface is even more important.For the processing method of the above-mentioned conical surface, normally first use common drill bit to remove surplus, then carry out processing and forming with conical surface reamer, finally utilize conical surface grinding rod to carry out grinding and polishing and removal aperture and conical surface switching place burr.

Utilize conical surface reamer to process the inner conical surface of above-mentioned spout, mainly deposit problem in the following areas:

The first, because the conical surface reamer conical surface is little, corresponding chip area space is little, chip removal weak effect in reality processing, easily produce to squeeze and cuts, thereby cause surface quality of workpieces poor, it is that the surface roughness of inner conical surface is below Ra0.4 that the surface roughness that does not reach cone in the jet face requires.

The second, utilize conical surface reamer cannot process the connecting arc between two inner conical surfaces and nozzle opening, moreover nozzle opening formed by different tool sharpenings from the processing of inner conical surface, the axiality of nozzle opening and inner conical surface is difficult to guarantee.But the axiality of nozzle opening and conical surface quality directly affects the quality of the index (fuel-oil atmozation cone angle) of outbalance in nozzle flow experimental performance.The defect that this comparatively gives prominence to for this cutter.

The 3rd, utilize conical surface reamer to process after the part conical surface, general employing conical surface grinding rod (steel) carries out by hand polishing and removes nozzle opening and conical surface switching place burr after dipping in abrasive pastes, effect varies with each individual, conical surface size and angle uniformity are poor, also easily in aperture, produce and collapse scarce phenomenon, affect constant product quality.

The 4th, conical surface reamer is generally four sword structures, and it manufactures with reconditioning difficulty large, is mainly the uniformity that is difficult to ensure the each cutting edge size of card.

Utility model content

The utility model aims to provide a kind of lathe tool, to solve, processes the inner conical surface of spout and the problem of nozzle opening difficulty in prior art.

To achieve these goals, the utility model provides a kind of lathe tool to comprise handle of a knife and cutter head, and handle of a knife is connected with cutter head, and cutter head comprises interconnective segment of cutting and the section of dodging, and the section of dodging comprises cylindrical section and cone section, and cone section is arranged between handle of a knife and cylindrical section.

Further, between cylindrical section and cone section, be provided with transition arc.

Further, handle of a knife and cutter head are structure as a whole.

Further, the difference in the aperture of the maximum outside diameter of the radial direction of segment of cutting and nozzle opening to be processed is greater than 0.03mm.

Further, the anterior angle of lathe tool is in the scope of 14 ° to 16 °, and relief angle is in the scope of 9 ° to 11 °.

Application the technical solution of the utility model, because the profile of spout is little, the inner cavity space of spout is narrow, when cylindrical section and cone section can be avoided processing inner conical surface, lathe tool interferes with the surface processing, realized turning inner conical surface and nozzle opening simultaneously, guaranteed that better the circle of finished surface is beated and surface roughness.The section of dodging has also been taken into account rigidity and the intensity of cutter, and cutting effect is relatively good, can better guarantee Part Surface Roughness, improves surface quality and the dimensional accuracy of product, significantly improves product percent of pass.

Accompanying drawing explanation

The Figure of description that forms the application's a part is used to provide further understanding of the present utility model, and schematic description and description of the present utility model is used for explaining the utility model, does not form improper restriction of the present utility model.In the accompanying drawings:

Fig. 1 shows according to the structural representation of the embodiment mono-of lathe tool of the present utility model;

Fig. 2 shows the structural representation of the cutter head of the lathe tool of Fig. 1;

Fig. 3 shows according to the structural representation of the embodiment bis-of lathe tool of the present utility model;

Fig. 4 and Fig. 5 show the structural representation of the cutter head of the lathe tool of Fig. 1;

Fig. 6 shows according to the structural representation of the embodiment tri-of lathe tool of the present utility model; And

Fig. 7 shows the structural representation of the segment of cutting of the lathe tool of Fig. 6.

Above-mentioned accompanying drawing comprises the following drawings mark:

10, handle of a knife; 20, cutter head; 21, segment of cutting; 22, cylindrical section; 23, cone section.

The specific embodiment

It should be noted that, in the situation that not conflicting, the feature in embodiment and embodiment in the application can combine mutually.Describe below with reference to the accompanying drawings and in conjunction with the embodiments the utility model in detail.

As depicted in figs. 1 and 2, the lathe tool of embodiment mono-comprises: handle of a knife 10 and cutter head 20, and handle of a knife 10 is connected with cutter head 20, and cutter head 20 comprises interconnective segment of cutting 21 and the section of dodging, the section of dodging comprises cylindrical section 22 and cone section 23, and cone section 23 is arranged on handle of a knife 10 and cylindrical section 22.

The lathe tool of Application Example one, because the profile of spout is little, the inner cavity space of spout is narrow, when cylindrical section 22 and cone section 23 can be avoided processing inner conical surface, lathe tool interferes with the surface processing, realized turning inner conical surface and nozzle opening simultaneously, guaranteed that better the circle of finished surface is beated and surface roughness.The section of dodging has also been taken into account rigidity and the intensity of cutter, and cutting effect is relatively good, can better guarantee Part Surface Roughness, improves surface quality and the dimensional accuracy of product, significantly improves product percent of pass.

When the processing inner conical surface of spout and nozzle opening, the turnning and milling complex centre that lathe tool is arranged on sevenfive axis processes spout to be processed.Inner conical surface and the nozzle opening of lathe tool to spout carries out fine finishining, can be by nozzle opening and the moulding of inner conical surface time processing, improved to a great extent the fairing of part profile switching, reduce the burr producing in processing, more effectively improve machining accuracy and the stability of part, saved process time.

In embodiment mono-, in order to realize the transition that cylindrical section 22 is level and smooth with cone section 23, between cylindrical section 22 and cone section 23, be provided with transition arc.Can also improve like this rigidity and the intensity of cutter.

In embodiment mono-, for faster in manufacture and context of detection, handle of a knife 10 and cutter head 20 are structure as a whole.

In embodiment mono-, handle of a knife 10 is cylindric.Simple in structure, easily manufactured, easy to use.Certainly, handle of a knife 10 also can be cube-shaped, rectangular-shaped etc.

In embodiment mono-, the difference in the aperture of the maximum outside diameter of the radial direction of segment of cutting 21 and nozzle opening to be processed is greater than 0.03mm.Wherein, the maximum outside diameter of the radial direction of segment of cutting 21 refers to the distance of point of a knife to the knife back.During the nozzle opening that is 0.3mm at processing diameter, the maximum outside diameter of segment of cutting is less than 0.27mm.During the nozzle opening that is 1mm at processing diameter, the maximum outside diameter of segment of cutting is less than

In embodiment mono-, in order to make the cutting edge of segment of cutting sharper, the anterior angle of lathe tool is in the scope of 14 ° to 16 °, and relief angle is in the scope of 9 ° to 11 °.Chip removal effect is like this relatively good, improves the surface quality of processing work.Preferably, the anterior angle of lathe tool is 15 °, and relief angle is 10 °.

Fig. 3 to Fig. 5 shows the structure of the embodiment bis-of the application's lathe tool, and the lathe tool of embodiment mono-is that from the difference of embodiment bis-cone angle of cone section is different, and the cone angle of the cone section of embodiment mono-is 60 °, and the cone angle of the cone section of embodiment bis-is

preferably, the lathe tool of embodiment mono-can be processed 90 ° of inner conical surfaces and the nozzle opening of spout, and the lathe tool of embodiment bis-can be processed 36 ° of inner conical surfaces and the nozzle opening of spout.

Fig. 6 and Fig. 7 show the structure of the embodiment tri-of the application's lathe tool, and the lathe tool of embodiment mono-is that from the difference of embodiment tri-cone angle of cone section is different, and the cone angle of the cone section of embodiment mono-is 60 °, and the cone angle of the cone section of embodiment tri-is

the lathe tool of embodiment tri-also can be processed 90 ° of inner conical surfaces and the nozzle opening of spout.Certainly, the model difference of spout, the structure of the section of dodging also can also comprise the structure that other are dodged.

The foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.

Claims

1. a lathe tool, it is characterized in that, comprise: handle of a knife (10) and cutter head (20), described handle of a knife (10) is connected with described cutter head (20), described cutter head (20) comprises interconnective segment of cutting (21) and the section of dodging, the described section of dodging comprises cylindrical section (22) and cone section (23), and described cone section (23) is arranged between described handle of a knife (10) and described cylindrical section (22).

2. lathe tool according to claim 1, is characterized in that, between described cylindrical section (22) and described cone section (23), is provided with transition arc.

3. lathe tool according to claim 1, is characterized in that, described handle of a knife (10) and described cutter head (20) are structure as a whole.

4. lathe tool according to claim 1, is characterized in that, the difference in the aperture of the maximum outside diameter of the radial direction of described segment of cutting (21) and nozzle opening to be processed is greater than 0.03mm.

5. lathe tool according to claim 1, is characterized in that, the anterior angle of described lathe tool is in the scope of 14 ° to 16 °, and relief angle is in the scope of 9 ° to 11 °.