CN113664478B - Machining process of precise shaft sleeve with notch - Google Patents
Machining process of precise shaft sleeve with notch Download PDFInfo
- Publication number
- CN113664478B CN113664478B CN202111050864.0A CN202111050864A CN113664478B CN 113664478 B CN113664478 B CN 113664478B CN 202111050864 A CN202111050864 A CN 202111050864A CN 113664478 B CN113664478 B CN 113664478B
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- shaft sleeve
- notch
- circular surface
- notch area
- area
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- 238000003754 machining Methods 0.000 title claims abstract description 12
- 238000000034 method Methods 0.000 claims abstract description 44
- 230000008569 process Effects 0.000 claims abstract description 44
- 238000012545 processing Methods 0.000 claims abstract description 25
- 238000005516 engineering process Methods 0.000 claims abstract description 9
- 238000005520 cutting process Methods 0.000 claims description 14
- 239000000463 material Substances 0.000 claims description 7
- 238000007514 turning Methods 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 239000002184 metal Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000012938 design process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000005496 tempering Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
- B23P15/003—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass bearings
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Polishing Bodies And Polishing Tools (AREA)
- Manufacture Of Motors, Generators (AREA)
Abstract
The invention relates to the technical field of shaft sleeve processing, in particular to a processing technology of a precise shaft sleeve with a notch, which comprises the following steps: step one: machining the shaft sleeve according to the drawing size until the requirement of the fine grinding process is met; step two: processing a plurality of circles of process grooves on the outer circular surface of the shaft sleeve; step three: before the fine grinding process, determining a notch area on the outer circular surface of the shaft sleeve, carrying out kerf treatment on the part in the notch area, and dividing the notch area into a plurality of sections by a plurality of kerfs; step four: finely grinding the inner circular surface and the outer circular surface of the shaft sleeve to the drawing size; step five: removing the notch area to form a notch; the notched shaft sleeve treated by the process can still well maintain the concentricity of the two ends of the shaft sleeve.
Description
Technical Field
The invention relates to the technical field of shaft sleeve processing, in particular to a processing technology of a precise shaft sleeve with a notch.
Background
In production, a high-precision shaft sleeve is usually used, and a common conventional shaft sleeve can be realized through an internal and external circle precision mill, but when a relatively large gap is needed in the middle of the shaft sleeve in production and use, concentricity of the shaft sleeve at two ends of the gap is difficult to ensure.
Because if the notch is machined first, referring to fig. 1, the concentricity of a and b is poor because uneven stress of the grinding wheel at c can occur when the inner hole is accurately ground and the cutter is left.
Moreover, if the whole shaft sleeve is finely ground out, and then a notch is machined at the position c, the concentricity of the shaft sleeve a, b and c is good when the notch is not machined at the position c, when the notch is machined at the position c, deformation at the position c can be caused in the machining process, or uneven stress caused by heat expansion and cold contraction of metal after the machining can also cause the original concentricity at the positions a and b to be poor, and practice proves that the shaft sleeve is bent inwards towards the notch position generally.
Therefore, in order to meet the coaxiality of two ends of the precise shaft sleeve with the notch, the existing processing technology of the precise shaft sleeve with the notch needs to be optimized and improved.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects existing in the prior art, the invention provides a processing technology of a precise shaft sleeve with a notch, which can effectively solve the problem that the concentricity of the shaft sleeve at two ends of the notch is poor when the precise shaft sleeve with the notch is processed by the technology in the prior art.
Technical proposal
In order to achieve the above purpose, the invention is realized by the following technical scheme:
the invention provides a processing technology of a precise shaft sleeve with a notch, which comprises the following processing steps:
step one: machining the shaft sleeve according to the drawing size until the requirement of the fine grinding process is met;
step two: processing a plurality of circles of process grooves on the outer circular surface of the shaft sleeve;
step three: before the fine grinding process, determining a notch area on the outer circular surface of the shaft sleeve, carrying out kerf treatment on the part in the notch area, and dividing the notch area into a plurality of sections by a plurality of kerfs;
step four: finely grinding the inner circular surface and the outer circular surface of the shaft sleeve to the drawing size;
step five: and removing the notch area to form a notch.
Further, in step two, the process tank is located at the notch area.
Further, in the second step, a plurality of circles of process grooves are formed through turning, and the process grooves are uniformly distributed.
Further, the radial section of the process groove is a V-shaped groove, and the angle, the depth and the number of the V-shaped groove are set according to the size and the material of the shaft sleeve.
In the third step, a cutting process is performed on the portion in the notch area by using wire cutting, the cutting is uniformly distributed, and the end portions of the cutting are close to the boundary of the notch area.
Further, in step three, the slit is perpendicular to the axis of the sleeve.
Advantageous effects
Compared with the known public technology, the technical scheme provided by the invention has the following beneficial effects:
according to the invention, before the shaft sleeve is prepared for accurate grinding, a plurality of circles of process grooves are processed on the outer circumferential surface of the shaft sleeve, then kerf processing is carried out on the notch area, the outer diameter side of the shaft sleeve is completely divided into a plurality of sections through the plurality of circles of process grooves, the telescopic stress of the surface of each small section can be released on the grooves, meanwhile, the process grooves enable metal and part to be thinned, the internal stress can be greatly reduced, and further, when the notch is formed, the process grooves can offset the internal stress of bending of the two ends of the shaft sleeve towards the notch position to a greater extent; then, the kerf treatment is carried out on the part in the notch area, so that the kerf treatment effectively reduces the problem of internal stress of metal, and ensures that the problem of cutter yielding with uneven stress does not occur during fine grinding; the sleeve with the notch after the treatment can still well maintain the concentricity of the two ends of the sleeve.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It is evident that the drawings in the following description are only some embodiments of the present invention and that other drawings may be obtained from these drawings without inventive effort for a person of ordinary skill in the art.
FIG. 1 is a schematic view of a notched bushing of a prior art process;
FIG. 2 is a flow chart of the process for machining the precision shaft sleeve of the present invention;
FIG. 3 is a schematic diagram of a second step of processing the precision bushing of the present invention;
FIG. 4 is a schematic diagram of a third step of processing a precision bushing according to the present invention;
FIG. 5 is a schematic view of the notch machining completion of the precision bushing of the present invention;
reference numerals in the drawings represent respectively: 10-shaft sleeve; 11-notch region; 12-slitting; 13-a process tank; 14-notch.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It will be apparent that the described embodiments are some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The invention is further described below with reference to examples.
Examples:
the invention provides a processing technology of a precise shaft sleeve with a notch, which is mainly applicable to a high-precision shaft sleeve with an action hole on the outer circular surface of the shaft sleeve, and mainly comprises the following processing steps of:
step one: machining the shaft sleeve 10 according to the drawing size until the requirement of the fine grinding process is met;
step two: processing a plurality of circles of process grooves 13 on the outer circular surface of the shaft sleeve 10, wherein the process grooves 13 are preferably distributed at the notch area 11;
step three: before the fine grinding process, determining a notch area 11 on the outer circular surface of the shaft sleeve 10, carrying out kerf 12 treatment on the part in the notch area 11, wherein the kerf 12 is perpendicular to the axis of the shaft sleeve 10, and a plurality of kerfs 12 divide the notch area 11 into a plurality of sections;
step four: the shaft sleeve 10 after the second and third steps is finely ground to the drawing size on the inner circular surface and the outer circular surface;
step five: the notch region 11 is removed to form a notch 14.
In the first step, forging materials can be selected for processing by the existing processes of rough turning, finish turning, end face turning, rough grinding, semi-finish grinding and the like, wherein certain quenching and tempering treatment is arranged in the middle.
In the second step, a plurality of circles of process grooves 13 are formed by turning, and the plurality of circles of process grooves 13 are uniformly distributed.
In this embodiment, the radial section of the design process groove 13 is preferably a V-shaped groove, the angle, depth and number of the V-shaped groove are set according to the size and material of the shaft sleeve 10, and specific parameters are obtained by practical processing experiments, so that no fixed variable relation exists, and the mechanical strength of the shaft sleeve in application is required to be maintained in the depth direction, and the practical use of the shaft sleeve is not affected.
In the third step, the kerf 12 is processed by cutting the portion in the notched area 11, the kerfs 12 are uniformly distributed, and the end portions of the kerf 12 are close to the boundary of the notched area 11.
In the third step, the kerf 12 is processed by the wire cutting process on the portion in the notch region 11, and the kerfs 12 are uniformly distributed. When the notch area 11 on the outer circular surface of the shaft sleeve 10 is determined, the notch area 11 is marked on the outer circular surface of the shaft sleeve 10, and the boundary of the notch area 11 is determined by a processing personnel through inputting corresponding numerical control parameters, so that the subsequent automatic wire cutting processing is convenient, and the conventional wire cutting process is adopted according to the shaft sleeve material. After the current wire cutting, under the improvement of stress relief of the process groove 13, the two ends of the shaft sleeve still deform slightly towards the cutting joint, but the concentricity of the shaft sleeve is improved by grinding through the subsequent fine grinding process of the step four.
The slitting 12 is carried out on the part in the notch area 11, and the notch area 11 and the shaft sleeve 10 are kept as a whole due to the fact that the slits formed by the warp cutting are a group of linear notches which are distributed in parallel, and the outer circular surface of the main body part of the notch area 11 and the outer circular surface of the shaft sleeve 10 are still a whole circular surface, so that the problem of cutter yielding due to uneven stress can not occur during fine grinding, the cutter yielding can not cause the difference of the fine grinding quantity of one side provided with the notch 14 and the corresponding side, and the coaxiality of the shaft sleeve 10 is reduced; at the same time, the kerf 12 treatment effectively reduces metal internal stress problems.
In the embodiment, the end of the kerf 12 is preferably designed to be close to the boundary of the notch area 11, so that when the residual material of the notch area 11 is removed later, in the fifth step, the residual material of the notch area 11 is removed by adopting secondary wire cutting or milling-grinding according to the requirements of the drawing, so as to form a notch 14; and step five, secondary processing is performed on the basis of the formation of the kerf 12, so that the processing is quicker, the removal is convenient, and the cutting heat generated during the removal is reduced, thereby reducing the occurrence of deformation.
The outer circular surface of the shaft sleeve 10 at the notch area 11 is processed with a plurality of circles of process grooves 13, the outer diameter side of the shaft sleeve 10 is completely divided into a plurality of sections by the circles of process grooves 13, the expansion stress of the surface of each small section can be released on the grooves, and meanwhile, the process grooves 13 thin metal and part of the metal, so that the internal stress can be greatly reduced; further, when the notch 14 is formed, the process groove 13 can offset the internal stress that the two ends of the shaft sleeve 10 bend towards the notch 14 when the line is cut in the step three, and the shaft sleeve 10 with the notch 14 after being processed in this way can still well maintain the concentricity of the two ends of the shaft sleeve 10.
The above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; these modifications or substitutions do not depart from the essence of the corresponding technical solutions from the protection scope of the technical solutions of the embodiments of the present invention.
Claims (6)
1. The processing technology of the precise shaft sleeve with the notch is characterized by comprising the following processing steps:
step one: machining the shaft sleeve according to the drawing size until the requirement of the fine grinding process is met;
step two: processing a plurality of circles of process grooves on the outer circular surface of the shaft sleeve;
step three: before the fine grinding process, determining a notch area on the outer circular surface of the shaft sleeve, carrying out kerf treatment on the part in the notch area, and dividing the notch area into a plurality of sections by a plurality of kerfs;
step four: finely grinding the inner circular surface and the outer circular surface of the shaft sleeve to the drawing size;
step five: and removing the notch area to form a notch.
2. The process for manufacturing a notched precision bushing of claim 1 wherein in step two, the process groove is located at the notched area.
3. The process for machining the notched precision bushing of claim 2, wherein in step two, a plurality of turns of the process grooves are formed by turning, and the plurality of turns of the process grooves are uniformly distributed.
4. The process for machining the notched precision shaft sleeve according to claim 3, wherein the radial cross section of the process groove is a V-shaped groove, and the angle, the depth and the number of the V-shaped grooves are set according to the size and the material of the shaft sleeve.
5. The process for manufacturing a precision boss with a notch according to claim 1, wherein in the third step, a slitting process is performed on the portion in the notch area by wire cutting, the slits are uniformly distributed, and the ends of the slits are close to the boundary of the notch area.
6. The process of claim 5, wherein in step three, the slit is perpendicular to the axis of the sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111050864.0A CN113664478B (en) | 2021-09-08 | 2021-09-08 | Machining process of precise shaft sleeve with notch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111050864.0A CN113664478B (en) | 2021-09-08 | 2021-09-08 | Machining process of precise shaft sleeve with notch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113664478A CN113664478A (en) | 2021-11-19 |
| CN113664478B true CN113664478B (en) | 2024-03-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111050864.0A Active CN113664478B (en) | 2021-09-08 | 2021-09-08 | Machining process of precise shaft sleeve with notch |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114193091A (en) * | 2021-11-29 | 2022-03-18 | 陕西电器研究所 | Mechanical machining method for frame parts |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU2005314314A1 (en) * | 2004-12-07 | 2006-06-15 | Wilson-Cook Medical Inc. | Catheter aperture with related structures and method |
| CN110877195A (en) * | 2019-12-05 | 2020-03-13 | 江西洪都航空工业集团有限责任公司 | High-precision forming method for high-strength magnesium alloy thin-wall long-cylindrical cabin |
| CN110919303A (en) * | 2019-12-16 | 2020-03-27 | 哈尔滨汽轮机厂有限责任公司 | Window machining method for large-window sleeve |
| CN113153909A (en) * | 2021-04-30 | 2021-07-23 | 上海建桥学院有限责任公司 | Shaft sleeve structure for petroleum valve and numerical control machining method thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4438203B2 (en) * | 2000-09-12 | 2010-03-24 | 株式会社デンソー | Pipe drilling method and apparatus |
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2021
- 2021-09-08 CN CN202111050864.0A patent/CN113664478B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU2005314314A1 (en) * | 2004-12-07 | 2006-06-15 | Wilson-Cook Medical Inc. | Catheter aperture with related structures and method |
| CN110877195A (en) * | 2019-12-05 | 2020-03-13 | 江西洪都航空工业集团有限责任公司 | High-precision forming method for high-strength magnesium alloy thin-wall long-cylindrical cabin |
| CN110919303A (en) * | 2019-12-16 | 2020-03-27 | 哈尔滨汽轮机厂有限责任公司 | Window machining method for large-window sleeve |
| CN113153909A (en) * | 2021-04-30 | 2021-07-23 | 上海建桥学院有限责任公司 | Shaft sleeve structure for petroleum valve and numerical control machining method thereof |
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| CN113664478A (en) | 2021-11-19 |
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