CN105458298A - Machining technology method for lowering complex surface roughness - Google Patents

Machining technology method for lowering complex surface roughness Download PDF

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Publication number
CN105458298A
CN105458298A CN201510917481.7A CN201510917481A CN105458298A CN 105458298 A CN105458298 A CN 105458298A CN 201510917481 A CN201510917481 A CN 201510917481A CN 105458298 A CN105458298 A CN 105458298A
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CN
China
Prior art keywords
roughness
lathe
turning
complex
cutting
Prior art date
Application number
CN201510917481.7A
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Chinese (zh)
Inventor
杨智文
李春明
肖圣亮
万卫平
王晓冬
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常州天山重工机械有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by 常州天山重工机械有限公司 filed Critical 常州天山重工机械有限公司
Priority to CN201510917481.7A priority Critical patent/CN105458298A/en
Publication of CN105458298A publication Critical patent/CN105458298A/en

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23BTURNING; BORING
    • B23B1/00Methods for turning or working essentially requiring the use of turning-machines; Use of auxiliary equipment in connection with such methods

Abstract

The invention discloses a machining technology method for lowering complex surface roughness. Three gears of turning are set, a common mechanical tool holder is used for lowering the surface roughness gradient of a workpiece by two grades, then a rolling and polishing tool is used for rolling treatment, the surface of the workpiece is subjected to finish turning till the surface roughness Ra is smaller than or equal to 0.4, and the machining requirement is met. The three gears of turning are set, universal machinability is good, the machining range of a common lathe can be widened, the production rate is increased, tipping is avoided, and the surface of the workpiece is prevented from being scratched. The deformation risk of workpieces of a thin-wall structure or a thin and long structure or the like in the machining process can be reduced.

Description

A kind of technological method for processing reducing complex surface roughness

Technical field

The present invention designs field of machining, especially a kind of technological method for processing reducing complex surface roughness.

Background technology

For the workpiece having complex surface, for meeting roughness Ra≤0.4, and distortion is in controlled range.General processing method has two kinds: one to be adopt polishing, the polishing mediums such as flexible polishing instrument and abrasive grain are utilized to carry out modification processing to surface of the work, for special-shaped structural part, polishing machine need be first used to process non-curved part, the mode of artificial polishing is adopted to complete the processing of the parts such as abnormal curved surface afterwards, the manpower and materials that this kind of method expends are higher, and correlation surface is difficult to evenly, smoothly transits, and the geometric accuracy of workpiece is difficult to ensure; Another kind method is with person of outstanding talent gram energy high-frequency percussion metal surface, energy composite energy is utilized to make surface produce compressive plastic deformation, this method is higher relative to first method stability, geometric accuracy significantly improves, but the range of work is limited, cannot carry out the processing of conventional curved surface structure, and required process allowance is comparatively large, general poor in processability.

Summary of the invention

The technical problem to be solved in the present invention is: overcome the deficiency in prior art, there is provided a kind of general processability good, the engine lathe range of work can be widened, speed production speed, avoid a kind of technological method for processing reducing complex surface roughness that tipping, surface scratch occur.

The technical solution adopted for the present invention to solve the technical problems is: a kind of technological method for processing reducing complex surface roughness, and for the complex surface of processing profiled structure, finish turning operation comprises following third gear turning:

1) carry out first grade of cutting by lathe to surface of the work, cutter adopts common clamped cutting bit, and the amount of feeding is 0.7 ~ 0.8mm, and lathe rotating speed is 50r/s, does not use cooling fluid;

2) carry out second gear cutting by lathe to surface of the work, cutter adopts common clamped cutting bit, and the amount of feeding is 0.15 ~ 0.25mm, and lathe rotating speed is 100r/s;

3) carry out third gear cutting by lathe to surface of the work, cutter adopts roller burnishing knife, and the amount of feeding is 0.05 ~ 0.08mm, and lathe rotating speed is 110r/s, uses cooling fluid cooling.

Further, lathe locomotive machining spindle diameter is 200mm.

In order to add the situation avoiding man-hour occurring tipping, surface scratch, when being carried out second gear by lathe and cutting, cooling fluid is used to cool.

Preferably, the cutter head of roller burnishing knife is ballhead.

The invention has the beneficial effects as follows: a kind of technological method for processing reducing complex surface roughness provided by the invention, by arranging third gear turning, select suitable cutter and cutting parameter, reasonable distribution allowance, control finish turning roughness grade, 0.4 can be less than or equal to by finish turning surface of the work to its surface roughness Ra, reach processing request, and the risk that thin-walled or elongated isostructural workpiece be out of shape in process can be reduced, general processability is good, the engine lathe range of work can be widened, speed production speed, avoid tipping, scratch surface of the work occur.

Accompanying drawing explanation

Below in conjunction with drawings and Examples, the present invention is further described.

Fig. 1 is complex part turnery processing allowance balance figure of the present invention.

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

Fig. 3 is roughness grade-surplus correspondence table.

Surface of the work cylindrical 4. finished product cylindrical after the turning of surface of the work cylindrical 3. second gear after the 2. first grades of turning of surface of the work cylindrical after 1. heat treatments in figure

Detailed description of the invention

The present invention is further illustrated with preferred embodiment by reference to the accompanying drawings now.These accompanying drawings are the schematic diagram of simplification, only basic structure of the present invention are described in a schematic way, and therefore it only shows the formation relevant with the present invention.

Complex part turnery processing allowance balance figure as depicted in figs. 1 and 2, for the surface of special-shaped structural part, after heat treatment (modified or carburizing and quenching), be out of shape more obvious, roughness grade number Ra > 6.3, under this kind of state, finish turning surface is less than 0.4 to its surface roughness Ra, and difficulty of processing is high.Finish turning operation point third gear need carry out turning, by experiment, can draw rational allowance, suitable cutter and cutting parameter, finish turning roughness grade, ensures that through third gear turning, workpiece surface roughness can reach desired value, specifically sees the following form 1.

Table 1

Binding experiment and record, when use lathe process is complex-curved, in large cutting output, high-revolving situation, due to the higher (example: hardness=59 ~ 63HRC after carburizing and quenching of part hardness, effective layer depth 1 ~ 1.4mm), rolling tool effects on surface directly cannot be used to carry out roll extrusion process, easily cause the phenomenon of tipping, surface scratch.So, first can use regular turning tool that Part Surface Roughness gradient is reduced by two grades, after Ra > 6.3 car to Ra ≈ 1.4 ~ 1.7, leave about 0.06mm allowance and carry out roll extrusion process to roller burnishing knife.Second time turning ensures that roughness desired value Ra is less than 1.7 (critical values), surplus between 0.05mm ~ 0.08mm, meets the corresponding relation of roughness grade as shown in Figure 3 and surplus.

So, experimentally with record, a kind of technological method for processing reducing complex surface roughness can be designed, for the complex surface of processing profiled structure, lathe locomotive machining spindle diameter is 200mm, by arranging third gear turning, select suitable cutter and cutting parameter, reasonable distribution allowance, control finish turning roughness grade, 0.4 can be less than or equal to by finish turning surface of the work to its surface roughness Ra, reach processing request, and the risk that thin-walled or elongated isostructural workpiece be out of shape in process can be reduced, general processability is good, the engine lathe range of work can be widened, speed production speed, avoid tipping occurs, scratch surface of the work.Concrete finish turning operation comprises the steps:

1) carry out first grade of cutting by lathe to surface of the work, cutter adopts common clamped cutting bit, and the amount of feeding is 0.7 ~ 0.8mm, and lathe rotating speed is 50r/s, does not use cooling fluid.By the workpiece of surface roughness Ra > 6.3, roughness turning is down to 3.0 ~ 3.2.

2) by lathe, second gear cutting is carried out to surface of the work, cutter adopts common clamped cutting bit, and the amount of feeding is 0.15 ~ 0.25mm, and lathe rotating speed is 100r/s, to the workpiece of first grade of turning rear surface roughness 3.0 ~ 3.2 be carried out, turning to surface roughness 1.4 ~ 1.7.In order to add the situation avoiding man-hour occurring tipping, surface scratch, when being carried out second gear by lathe and cutting, cooling fluid is used to cool.

3) by lathe, third gear cutting is carried out to surface of the work, cutter adopts roller burnishing knife, the amount of feeding is 0.05 ~ 0.08mm, lathe rotating speed is 110r/s, the workpiece of second gear turning rear surface roughness 11.4 ~ 1.7 will have been carried out, turning, to surface roughness Ra≤0.4, uses cooling fluid cooling.Preferably, the cutter head of roller burnishing knife is ballhead.

Above-described embodiment is only for illustrating technical conceive of the present invention and feature; its object is to person skilled in the art can be understood content of the present invention and be implemented; can not limit the scope of the invention with this; all equivalences done according to Spirit Essence of the present invention change or modify, and all should be encompassed in protection scope of the present invention.

Claims (4)

1. reduce a technological method for processing for complex surface roughness, for the complex surface of processing profiled structure, it is characterized in that: finish turning operation comprises following third gear turning:
1) carry out first grade of cutting by lathe to surface of the work, cutter adopts common clamped cutting bit, and the amount of feeding is 0.7 ~ 0.8mm, and lathe rotating speed is 50r/s, does not use cooling fluid;
2) carry out second gear cutting by lathe to surface of the work, cutter adopts common clamped cutting bit, and the amount of feeding is 0.15 ~ 0.25mm, and lathe rotating speed is 100r/s;
3) carry out third gear cutting by lathe to surface of the work, cutter adopts roller burnishing knife, and the amount of feeding is 0.05 ~ 0.08mm, and lathe rotating speed is 110r/s, uses cooling fluid cooling.
2. a kind of technological method for processing reducing complex surface roughness according to claim 1, is characterized in that: described lathe locomotive machining spindle diameter is 200mm.
3. a kind of technological method for processing reducing complex surface roughness according to claim 1, is characterized in that: when being carried out second gear by lathe and cutting, and uses cooling fluid cooling.
4. a kind of technological method for processing reducing complex surface roughness according to claim 1, is characterized in that: the cutter head of described roller burnishing knife is ballhead.
CN201510917481.7A 2015-12-10 2015-12-10 Machining technology method for lowering complex surface roughness CN105458298A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201510917481.7A CN105458298A (en) 2015-12-10 2015-12-10 Machining technology method for lowering complex surface roughness

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201510917481.7A CN105458298A (en) 2015-12-10 2015-12-10 Machining technology method for lowering complex surface roughness

Publications (1)

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CN105458298A true CN105458298A (en) 2016-04-06

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09155601A (en) * 1995-12-14 1997-06-17 Tomy Kikai Kogyo Kk Cutting method and cutting machine
CN102922244A (en) * 2012-11-21 2013-02-13 哈尔滨东安发动机(集团)有限公司 Processing method for realizing integrity of surface of titanium alloy impeller
CN104827113A (en) * 2014-11-27 2015-08-12 王晓冬 Method of processing impeller on five-axis machining center

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09155601A (en) * 1995-12-14 1997-06-17 Tomy Kikai Kogyo Kk Cutting method and cutting machine
CN102922244A (en) * 2012-11-21 2013-02-13 哈尔滨东安发动机(集团)有限公司 Processing method for realizing integrity of surface of titanium alloy impeller
CN104827113A (en) * 2014-11-27 2015-08-12 王晓冬 Method of processing impeller on five-axis machining center

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Application publication date: 20160406