CN103433690B - Casing assembly processing method - Google Patents
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- CN103433690B CN103433690B CN201310412027.7A CN201310412027A CN103433690B CN 103433690 B CN103433690 B CN 103433690B CN 201310412027 A CN201310412027 A CN 201310412027A CN 103433690 B CN103433690 B CN 103433690B
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- 238000003672 processing method Methods 0.000 title claims abstract description 18
- 238000003754 machining Methods 0.000 claims abstract description 42
- 238000000034 method Methods 0.000 claims abstract description 27
- 230000032683 aging Effects 0.000 claims abstract description 7
- 238000007514 turning Methods 0.000 claims description 9
- 238000007790 scraping Methods 0.000 claims description 2
- 238000005516 engineering process Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
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- 230000000694 effects Effects 0.000 description 1
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Abstract
This patent relates to a kind of processing method of casing assembly, described casing assembly is fitted together by three one-piece part workpiece boxs, case lid, upper brackets, assemble first three one-piece part and first carry out roughing and semifinishing separately, size required before being machined to assembling, then fit together, then carry out processing and need the hole that processes together and end face after assembling.This processing method comprises: S1, roughing to each part; S2, Ageing Treatment is carried out to each part, the fine finishining of the semifinishing before then assembling and assembly faying face; S3, by each assembling parts, and to assembly fine finishining; S4, assembly take rear fine finishining apart; The advantage of this patent is: machining accuracy and the quality that not only can guarantee casing assembly, improve the utilization rate of lathe; But also can significantly cut down finished cost.
Description
Technical field
This patent belongs to lathe production technical field, particularly relates to a kind of processing method of heavy duty machine tools casing assembly.
Background technology
Casing is the important component part of whole lathe, the good and bad precision directly affecting whole lathe of casing quality.When machining box part, require that dead eye matches with main shaft bearing, and carry out mark, its fit clearance is not more than 0.0025mm, dead eye and end face squareness franchise are not more than 0.005mm, and two end axles bearing bore axiality franchise is not more than 0.005mm, after assembling, casing dead eye and case lid centre bore axiality franchise are not more than 0.005mm, and carriage center hole and casing dead eye depth of parallelism franchise are not more than 0.005mm.After whole assembly is fitted together, required precision is very high, so be the difficult problem that technique primarily solves with the required precision which kind of manufacturing process reaches whole assembly.
Summary of the invention
This patent provides a kind of processing method of casing assembly for solving in known technology the technical problem that exists, and this processing method machining accuracy is high, and can ensure the crudy of part.
The technical scheme that this patent is taked for the technical problem existed in solution known technology is:
A kind of processing method of casing assembly, described casing assembly is made up of workpiece box, end cap and upper bracket, end cap have the first hole, second hole coaxial with the first hole, three hole parallel with the first hole, six hole coaxial with the 3rd hole, upper bracket have the 4th hole and five hole coaxial with the 4th hole, workpiece box has a bottom surface, there is a workpiece box centre bore at bottom center position, have and the coaxial seven apertures in the human head in the first hole and the second hole, octal and the 9th hole, it is characterized in that: processing method comprises the following steps:
S1, to each part roughing;
S2, Ageing Treatment is carried out to each part, the fine finishining of the semifinishing before then assembling and assembly faying face;
S3, by each assembling parts, and to assembly fine finishining;
S4, assembly take rear fine finishining apart;
Wherein, in S1, for the hole that processes together and end face after not needing to assemble, allowance that each end face stays controls within the scope of 2 ~ 3mm, and allowance that each bore dia stays controls within the scope of 5 ~ 6mm, and each form and position tolerance accumulated error controls within 0.15mm;
For the hole processed together after needs assembling and end face, each bore dia stays allowance to control within the scope of 7 ~ 8mm, and each end face stays allowance to control within the scope of 4 ~ 5mm;
In S2, first, first each part is carried out Ageing Treatment, then the hole processed together after each part not being needed assembling and end face, be machined to final size, be wherein machined in this step final size do not need assemble after the hole that processes together and end face do not comprise end face, the end face inside seven apertures in the human head, the end face inside octal inside the second hole, the 5th hole, seven apertures in the human head, octal and the second hole end face near the first side, hole, the 5th hole;
For the hole processed together after needs assembling and end face, allowance that each diameter stays controls within the scope of 4 ~ 4.5mm, allowance that each hole end surface stays controls within the scope of 2 ~ 2.5mm, wherein: upper bracket faying face reserves 0.15mm allowance, remaining parts faying face reserves 2.5mm allowance;
In S3, after each one-piece part fits together, carry out fine finishining to the hole that processes together after needing assembling and end face, the hole processed together after needing assembling and end face refer to inside end face inside the first hole, the 3rd hole, the 4th hole, the 6th hole, the 9th hole and the 3rd hole, the 4th hole and the end face in outside, the end face in inside the 6th hole and outside, end face inside the 9th hole;
In S4, after part to be processed is taken apart, the hole of each part of difference centering and end face, process end face, the end face inside seven apertures in the human head, the end face inside octal inside the second hole, the 5th hole, seven apertures in the human head, octal and the second hole end face near the first side, hole, the 5th hole respectively.
This patent can also by the following technical solutions:
Preferably, in S2, the semifinishing of end cap and fine finishining, with vertical lathe by the rim of the mouth of end cap and workpiece box bound fraction and end face half finish turning and finish turning to final size; First hole of finish turning end cap and the second hole, each diameter stays allowance to control within the scope of 4 ~ 4.5mm, then uses Cutter Body Processing with Machining Center the 3rd hole, and diameter stays allowance also to control within the scope of 4 ~ 4.5mm, faying face reserves 2.5mm allowance, and remainder is machined to final size.
Preferably, in S2, the semifinishing of upper bracket and fine finishining, first the 4th hole, the 5th hole and end face, faying face is processed with horizontal Machining centers, bore dia stays allowance to control within the scope of 4 ~ 4.5mm, end face stays allowance to control within the scope of 2 ~ 2.5mm, and faying face reserves 0.15mm and scrapes sequence processing capacity.
Preferably, in S2, workpiece box work in-process, there is a workpiece box centre bore workpiece box bottom surface, a fixture is used in this step, clamp central has a fixture setting circle boss, match with the workpiece box centre bore of workpiece box bottom surface, fit clearance controls within the scope of 0 ~ 0.005mm, fixture is provided with fixture graduation mark, the spacing of this fixture graduation mark and fixture setting circle boss center line and the spacing of workpiece box bottom surface workpiece box centre bore center line and right side hole end surface match, the size required by workpiece box is measured by this fixture graduation mark, first the lathe center of centering horizontal Machining centers is wanted in processing, again fixture bottom surface is placed on horizontal Machining centers work top, fixture setting circle boss upward, centering fixture setting circle boss center again, make fixture setting circle boss center consistent with lathe center, then workpiece box is placed on fixture, be installed together, carry out machining hole and end face, the hole processed together after assembling and end face, each bore dia stays allowance to control within the scope of 4 ~ 4.5mm, and each end face stays allowance to control within the scope of 2 ~ 2.5mm, and faying face reserves 2.5mm allowance.
Preferably, in S3, workpiece box and fixture entirety remain on horizontal Machining centers motionless, end cap and workpiece box are fitted together, process the first hole by horizontal Machining centers simultaneously, 3rd hole, 6th hole, 9th hole, workpiece box left side, on the right of end cap, outer face is to final size, processing work case simultaneously, the faying face of end cap and upper bracket, and reserve 0.15mm and scrape sequence processing capacity, flatness error is not more than 0.05mm, repair and scrape this face, repair after scraping, flatness error is not more than 0.01mm, upper bracket faying face is repaiied by this face and is scraped to final size, flatness error is not more than 0.01mm equally, at machining tool, fixture, workpiece box, when end cap is motionless, by upper bracket and workpiece box, end cap fits together, by horizontal Machining centers centering first hole within 0.01mm, process the inner side and outer side end face in the 4th hole and hole to final size.
Preferably, in S4, when machining tool, assembly, cutter and main shaft are motionless, pull down end cap and upper bracket, by horizontal Machining centers centering the 9th hole within 0.01mm, process seven apertures in the human head, octal and hole inner end to final size; And then end cap is arranged on vertical lathe, by the first hole centering, centering is within 0.01mm, and fine finishining second hole is to final size; Finally be arranged on horizontal Machining centers by upper bracket, by the 4th hole centering, and centering the 4th hole is within 0.01mm, and fine finishining the 5th hole is to final size.
The advantage that this patent has and good effect are:
After this patent have employed above technical scheme, reach as single for each part carrying out is processed inaccessiable precision after assembling, and utilize the advantage of existing equipment, utilize fixture, first process the left side of workpiece box, and then machining hole, processing upper bracket and end cap is carried out again below after attaching together, the condition of providing convenience, ensure that precision and the quality of casing assembly, also improves the utilization rate of lathe.This patent is the processing of large-size box part on the stock-removing machine condition of providing convenience and advanced process means, and technique is unique, innovation, also a saving substantial contribution simultaneously.
Accompanying drawing explanation
Fig. 1 is the structural representation of casing assembly;
Fig. 2 is the A-A sectional view of Fig. 1;
Fig. 3 is assembly machining state schematic diagram;
Fig. 4 is workpiece box machining sketch chart;
Fig. 5 is fixture front view;
Fig. 6 is fixture top view.
In figure: 1, the first hole; 2, the second hole; 3, the 3rd hole; 4, the 4th hole; 5, the 5th hole; 6, the 6th hole; 7, seven apertures in the human head; 8, octal; 9, the 9th hole; 10, workpiece box centre bore; 11, workpiece box bottom surface; 12, workpiece box left side; 13, fixture graduation mark; 14, fixture setting circle boss; 15, fixture bottom surface;
100, workpiece box; 200, end cap; 300, upper bracket; 400, fixture; 500, horizontal Machining centers workbench.
Detailed description of the invention
For summary of the invention, the Characteristic of this patent can be understood further, hereby exemplify following examples, and coordinate accompanying drawing to be described in detail as follows:
A kind of processing method of casing assembly, casing assembly as depicted in figs. 1 and 2, casing assembly is made up of workpiece box 100, end cap 200 and upper bracket 300, end cap have the first hole 1, second hole 2 coaxial with the first hole, three hole 3 parallel with the first hole, six hole 6 coaxial with the 3rd hole, upper bracket have the 4th hole 4 and five hole 5 coaxial with the 4th hole, workpiece box has a bottom surface, there is a workpiece box centre bore 10 at bottom center position, has and the coaxial seven apertures in the human head 7 in the first hole and the second hole, octal 8 and the 9th hole 9.
Processing method comprises the following steps:
S1, roughing to each part;
S2, Ageing Treatment is carried out to each part, the fine finishining of the semifinishing before then assembling and assembly faying face;
S3, by each assembling parts, and to assembly fine finishining;
S4, assembly take rear fine finishining apart.
Wherein, in S1:
Respectively roughing is carried out to each part, for the hole that processes together and end face after not needing to assemble, allowance that each end face stays controls within the scope of 2 ~ 3mm, and allowance that each bore dia stays controls within the scope of 5 ~ 6mm, and each form and position tolerance accumulated error controls within 0.15mm;
For the hole processed together after needs assembling and end face, each bore dia stays allowance to control within the scope of 7 ~ 8mm, each end face stays allowance to control within the scope of 4 ~ 5mm, in order in processing below, one-piece part fits together carries out adding man-hour, as offset between each part, add man-hour deviation energy centering and come.
In S2:
The semifinishing of described assembling each part front and fine finishining, first, first each part is carried out Ageing Treatment, then the hole processed together after each part not being needed assembling and end face, by designing requirement, be machined to final size with horizontal Machining centers and vertical lathe, be wherein machined in this step final size do not need assemble after the hole that processes together and end face do not comprise end face, the end face inside seven apertures in the human head, the end face inside octal inside the second hole, the 5th hole, seven apertures in the human head, octal and the second hole end face near the first side, hole, the 5th hole.
For the hole processed together after needs assembling and end face, allowance that each diameter stays controls within the scope of 4 ~ 4.5mm, allowance that each end face stays controls within the scope of 2 ~ 2.5mm, upper bracket 300 faying face reserves 0.15mm allowance, and the faying face of workpiece box 100, end cap 200 respectively reserves 2.5mm allowance.
Wherein:
The semifinishing of end cap 200 and fine finishining, with vertical lathe by the rim of the mouth of end cap 200 and workpiece box 100 bound fraction and end face half finish turning and finish turning to final size; First hole 1 and the second hole 2 of finish turning end cap 200, each diameter stays allowance to control within the scope of 4 ~ 4.5mm, then uses Cutter Body Processing with Machining Center the 3rd hole 3, and diameter stays allowance also to control within the scope of 4 ~ 4.5mm, faying face reserves 2.5mm allowance, and remainder is machined to final size.
The semifinishing of upper bracket 300 and fine finishining, first the 4th hole 4, the 5th hole 5 and end face, faying face is processed with horizontal Machining centers, bore dia stays allowance to control within the scope of 4 ~ 4.5mm, end face stays allowance to control within the scope of 2 ~ 2.5mm, and faying face reserves 0.15mm and scrapes sequence processing capacity.
As shown in Figure 4, workpiece box 100 work in-process, because there is a workpiece box centre bore part bottom surface, and the spacing of workpiece box centre bore and workpiece box left side 12 has strict tolerance, and this spacing cannot directly be measured, this just needs to manufacture a set of fixture 400 measuring this spacing, the shape of fixture as shown in Figure 5 and Figure 6, this fixture has a fixture setting circle boss 14, match with the workpiece box centre bore 10 of workpiece box bottom surface 11, fit clearance controls within the scope of 0 ~ 0.005mm, fixture is provided with fixture graduation mark 13, the spacing of this fixture graduation mark and fixture setting circle boss 14 center line and the spacing of workpiece box bottom surface workpiece box centre bore 10 center line and right side hole end surface 12 match, the size required by workpiece box is measured by this fixture graduation mark 13, first the workpiece box centre bore 10 of horizontal Machining centers finishing workpiece case 100 is used in processing, then workpiece box 100 is pulled down, the lathe center of centering horizontal Machining centers, fixture 400 bottom surface 15 is placed on horizontal Machining centers workbench 500, fixture setting circle boss 14 upward, centering fixture setting circle boss center again, make fixture setting circle boss center consistent with lathe center, workpiece box 100 is placed on fixture 400, carry out machining hole and end face, the hole processed together after assembling and end face, each bore dia stays allowance to control within the scope of 4 ~ 4.5mm, each end face stays allowance to control within the scope of 2 ~ 2.5mm, and faying face reserves 2.5mm allowance, does not need the hole that attaches together and end face to be machined to final size.
Refer to Fig. 3, in S3:
After each single-piece fits together, fine finishining is carried out to the hole that processes together after needing assembling and end face, the hole processed together after needing assembling and end face is inside the end face outside the first hole, the 3rd hole, the 4th hole, the 6th hole, the 9th hole and the first hole, the end face inside the 3rd hole, the 4th hole and the end face in outside, the end face inside the 6th hole, the end face inside the 9th hole;
Workpiece box 100 and fixture 400 motionless, still on horizontal Machining centers workbench 500, then end cap 200 and workpiece box 100 are fitted together, the first hole is processed by horizontal Machining centers, 3rd hole, 6th hole, 9th hole, end face 12, on the right of end cap 200, outer face is to final size, processing work case 100 simultaneously, the faying face of end cap 200 and upper bracket 300, and reserve 0.15mm and scrape sequence processing capacity, require that faying face flatness error is not more than 0.05mm, repair and scrape this face, after amendment, this facial plane degree error is not more than 0.01mm, upper bracket 300 faying face is repaiied by this face and is scraped, flatness error is not more than 0.01mm equally, at machining tool, workpiece box 100, end cap 200, when fixture 400 is motionless, by upper bracket 300 and workpiece box 100, end cap 200 fits together, by horizontal Machining centers centering first hole within 0.01mm, process the 4th hole and hole medial surface, end face outside is to final size.
In S4, after part to be processed is taken apart, the hole of each part of difference centering and end face, process the end face inside the second hole, the 5th hole, seven apertures in the human head, octal and the second hole end face near the first side, hole, the 5th hole, the end face inside seven apertures in the human head, the end face inside octal respectively to final size.
When machining tool, assembly, cutter and main shaft are motionless, pull down end cap 200 and upper bracket 300, by horizontal Machining centers centering the 9th hole, correct error, within 0.01mm, processes seven apertures in the human head, octal and hole inner end to final size; And then end cap 200 is arranged on vertical lathe, by the first hole centering, correct error is within 0.01mm, and fine finishining second hole is to final size; Finally be arranged on horizontal Machining centers by upper bracket 300, by the 4th hole centering, correct error is within 0.01mm, and three parts, to final size, are finally done same tag by fine finishining the 5th hole.
Although be described the preferred embodiment of this patent by reference to the accompanying drawings above; but this patent is not limited to above-mentioned detailed description of the invention; above-mentioned detailed description of the invention is only schematic; be not restrictive; those of ordinary skill in the art is under the enlightenment of this patent; do not departing under the ambit that this patent aim and claim protect, can also make a lot of form, these all belong within the protection domain of this patent.
Claims (6)
1. a casing assembly processing method, described casing assembly is made up of workpiece box, end cap and upper bracket, end cap have the first hole, second hole coaxial with the first hole, three hole parallel with the first hole, six hole coaxial with the 3rd hole, upper bracket have the 4th hole and five hole coaxial with the 4th hole, workpiece box has a bottom surface, there is a workpiece box centre bore at bottom center position, have and the coaxial seven apertures in the human head in the first hole and the second hole, octal and the 9th hole, it is characterized in that: processing method comprises the following steps:
S1, to each part roughing;
S2, Ageing Treatment is carried out to each part, the fine finishining of the semifinishing before then assembling and assembly faying face;
S3, by each assembling parts, and to assembly fine finishining;
S4, assembly take rear fine finishining apart;
Wherein, in S1, for the hole that processes together and end face after not needing to assemble, allowance that each end face stays controls within the scope of 2 ~ 3mm, and allowance that each bore dia stays controls within the scope of 5 ~ 6mm, and each form and position tolerance accumulated error controls within 0.15mm;
For the hole processed together after needs assembling and end face, each bore dia stays allowance to control within the scope of 7 ~ 8mm, and each end face stays allowance to control within the scope of 4 ~ 5mm;
In S2, first, first each part is carried out Ageing Treatment, then the hole processed together after each part not being needed assembling and end face, be machined to final size, be wherein machined in this step final size do not need assemble after the hole that processes together and end face do not comprise end face, the end face inside seven apertures in the human head, the end face inside octal inside the second hole, the 5th hole, seven apertures in the human head, octal and the second hole end face near the first side, hole, the 5th hole;
The hole processed together after needing assembling and end face, allowance that each diameter stays controls within the scope of 4 ~ 4.5mm, allowance that each hole end surface stays controls within the scope of 2 ~ 2.5mm, wherein: upper bracket allowance that faying face stays controls at 0.15mm, remaining parts faying face reserves 2.5mm allowance;
In S3, after each one-piece part fits together, carry out fine finishining to the hole that processes together after needing assembling and end face, the hole processed together after needing assembling and end face refer to inside end face inside the first hole, the 3rd hole, the 4th hole, the 6th hole, the 9th hole and the 3rd hole, the 4th hole and the end face in outside, the end face in inside the 6th hole and outside, end face inside the 9th hole;
In S4, after part to be processed is taken apart, the hole of each part of difference centering and end face, process end face, the end face inside seven apertures in the human head, the end face inside octal inside the second hole, the 5th hole, seven apertures in the human head, octal and the second hole end face near the first side, hole, the 5th hole respectively.
2. casing assembly processing method according to claim 1, is characterized in that: in S2, the semifinishing of end cap and fine finishining, with vertical lathe by the rim of the mouth of end cap and workpiece box bound fraction and end face half finish turning and finish turning to final size; First hole of finish turning end cap and the second hole, each diameter stays allowance to control within the scope of 4 ~ 4.5mm, then uses Cutter Body Processing with Machining Center the 3rd hole, and diameter stays allowance also to control within the scope of 4 ~ 4.5mm, faying face reserves 2.5mm allowance, and remainder is machined to final size.
3. casing assembly processing method according to claim 1, it is characterized in that: in S2, the semifinishing of upper bracket and fine finishining, first the 4th hole, the 5th hole and end face, faying face is processed with horizontal Machining centers, bore dia stays allowance to control within the scope of 4 ~ 4.5mm, end face stays allowance to control within the scope of 2 ~ 2.5mm, and faying face reserves 0.15mm and scrapes sequence processing capacity.
4. casing assembly processing method according to claim 1, it is characterized in that: in S2, there is a workpiece box centre bore described workpiece box bottom surface, a fixture is used in this step, clamp central has a fixture setting circle boss, match with the workpiece box centre bore of workpiece box bottom surface, fit clearance controls within the scope of 0 ~ 0.005mm, fixture is provided with fixture graduation mark, the spacing of this fixture graduation mark and fixture setting circle boss center line and the spacing of workpiece box bottom surface workpiece box centre bore center line and right side hole end surface match, the size required by workpiece box is measured by this fixture graduation mark, first the lathe center of centering horizontal Machining centers is wanted in processing, again fixture bottom surface is placed on horizontal Machining centers work top, fixture setting circle boss upward, centering fixture setting circle boss center again, make fixture setting circle boss center consistent with lathe center, then workpiece box is placed on fixture, be installed together, carry out machining hole and end face, the hole processed together after assembling and end face, each bore dia stays allowance to control within the scope of 4 ~ 4.5mm, and each end face stays allowance to control within the scope of 2 ~ 2.5mm, and faying face reserves 2.5mm allowance.
5. casing assembly processing method according to claim 1, it is characterized in that: in S3, workpiece box and fixture entirety remain on horizontal Machining centers motionless, end cap and workpiece box are fitted together, process the first hole by horizontal Machining centers simultaneously, 3rd hole, 6th hole, 9th hole, workpiece box left side, on the right of end cap, outer face is to final size, processing work case simultaneously, the faying face of end cap and upper bracket, and reserve 0.15mm and scrape sequence processing capacity, flatness error is not more than 0.05mm, repair and scrape this face, repair after scraping, flatness error is not more than 0.01mm, upper bracket faying face is repaiied by this face and is scraped to final size, flatness error is not more than 0.01mm equally, at machining tool, fixture, workpiece box, when end cap is motionless, then by upper bracket and workpiece box, end cap fits together, by horizontal Machining centers centering first hole within 0.01mm, to process in the 4th hole and hole end face outside to final size.
6. casing assembly processing method according to claim 1, it is characterized in that: in S4, when machining tool, assembly, cutter and main shaft are motionless, pull down end cap and upper bracket, by horizontal Machining centers centering the 9th hole within 0.01mm, process seven apertures in the human head, octal and hole inner end to final size; And then end cap is arranged on vertical lathe, by the first hole centering, centering is within 0.01mm, and fine finishining second hole is to final size; Finally be arranged on horizontal Machining centers by upper bracket, by the 4th hole centering, and centering the 4th hole is within 0.01mm, and fine finishining the 5th hole is to final size.
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| CN105458362A (en) * | 2014-09-11 | 2016-04-06 | 焱智精密机械（上海）有限公司 | Machining method for shaft pin assembly member |
| CN104889701B (en) * | 2015-06-23 | 2017-05-24 | 天津第一机床总厂 | Large gear machine tool worktable machining method |
| CN104924042A (en) * | 2015-06-23 | 2015-09-23 | 天津第一机床总厂 | Large gear machine tool drum wheel assembled piece machining method |
| CN105149887B (en) * | 2015-09-30 | 2017-06-20 | 天津第一机床总厂 | The processing method of large-scale driven casing assembly |
| CN108131423A (en) * | 2017-12-15 | 2018-06-08 | 内蒙古北方重工业集团有限公司 | A kind of vertical split low noise gearbox and processing method |
| CN109773431B (en) * | 2019-03-29 | 2020-10-27 | 中信戴卡股份有限公司 | Method for processing split type cylinder head cover assembly of engine |
| CN111250942A (en) * | 2020-03-12 | 2020-06-09 | 无锡压缩机股份有限公司 | Processing method of split crankcase of large six-row three-stage labyrinth compressor |
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