CN113814667A - Machining method of triangular shaft sleeve - Google Patents
Machining method of triangular shaft sleeve Download PDFInfo
- Publication number
- CN113814667A CN113814667A CN202111219082.5A CN202111219082A CN113814667A CN 113814667 A CN113814667 A CN 113814667A CN 202111219082 A CN202111219082 A CN 202111219082A CN 113814667 A CN113814667 A CN 113814667A
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- Prior art keywords
- test bar
- hole
- tool
- shaft sleeve
- test
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- 238000003754 machining Methods 0.000 title claims abstract description 32
- 238000000034 method Methods 0.000 title claims abstract description 31
- 238000012360 testing method Methods 0.000 claims abstract description 85
- 238000005520 cutting process Methods 0.000 claims abstract description 17
- 238000004519 manufacturing process Methods 0.000 claims abstract description 17
- 238000010438 heat treatment Methods 0.000 claims abstract description 9
- 210000000078 claw Anatomy 0.000 claims description 9
- 238000001514 detection method Methods 0.000 claims description 7
- 238000005242 forging Methods 0.000 claims description 4
- 238000005496 tempering Methods 0.000 claims description 4
- 238000003825 pressing Methods 0.000 claims description 3
- 238000003672 processing method Methods 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 5
- 238000003801 milling Methods 0.000 description 5
- 238000005299 abrasion Methods 0.000 description 4
- 230000007704 transition Effects 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 238000010923 batch production Methods 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 238000005553 drilling Methods 0.000 description 2
- 206010066054 Dysmorphism Diseases 0.000 description 1
- 229910000797 Ultra-high-strength steel Inorganic materials 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
Images
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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D1/00—Couplings for rigidly connecting two coaxial shafts or other movable machine elements
- F16D1/06—Couplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end
- F16D1/08—Couplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end with clamping hub; with hub and longitudinal key
Abstract
The invention relates to the field of machine tool machining, in particular to a method for machining a triangular shaft sleeve, which comprises the following steps: obtaining a test bar and detecting; processing an inner circular hole of the test rod; carrying out heat treatment on the processed test bar; semi-finish turning a large outer circle and an inner circle hole; clamping the test bar by using a first tool to finish machining the outer circle and two end faces of the test bar; and clamping the test bar by adopting a second tool and cutting the special-shaped hole by using a slow-moving wire. The quality of the test bar is detected before manufacturing, then the inner round hole is machined to remove redundant allowance, then heat treatment is carried out to improve strength and reduce deformation, then semi-finish turning and finish machining are carried out to ensure the machining quality, slow-moving wire cutting and electric discharge machining are adopted, parts are not contacted, and the machining quality can be better controlled by means of the self-precision of equipment.
Description
Technical Field
The invention relates to the field of machine tool machining, in particular to a machining method of a triangular shaft sleeve.
Background
The triangular shaft sleeve is a key part of the turbine product and plays a role in transmitting torque during the operation process of the machine. As shown in fig. 1.
The triangular shaft sleeve is arranged on the main shaft, and is matched with the special-shaped hole on the main shaft through the overlong precise special-shaped hole at the inner hole of the triangular shaft sleeve, and the function of transmitting torque and power is achieved by utilizing the binding area and the matching precision between the special-shaped holes. The ultra-long precise special-shaped hole at the inner hole of the triangular shaft sleeve has high requirements on the roughness and the precision grade of form and position tolerance, the machining method is greatly limited by combining the machining performance and the design requirement of the material, and the design requirement is difficult to ensure by the conventional process scheme. If the requirements of roughness and form and position tolerance cannot be controlled, the whole machine has large vibration, short service life, low efficiency and even safety accidents.
The part has the following difficulties in the existing manufacturing scheme; 1. the triangular shaft sleeve is made of 45CrNiMoVA, is low-alloy ultrahigh-strength steel, has the required hardness of HRC40-44, and is easy to cause cutter abrasion in comparison with milling processing, so that the processing result is unstable, and the requirement on the abrasion resistance of the processing cutter is high finally; 2. the length-diameter ratio of the inner hole reaches 3:1, and the rigidity of a cutter system in the milling process is difficult to meet the precision requirement; 3. the requirements on roughness and form and position tolerance precision are high, and the requirements on conventional milling are difficult to meet; the special-shaped hole structure at the inner hole can not be realized by conventional grinding, and new requirements are provided for the formulation of a processing scheme. 4. Alignment accuracy is low, and the requirement on coaxiality of the inner hole and the outer circle cannot be met. A new scheme, slow wire cutting, must be adopted.
Disclosure of Invention
The invention aims to provide a method for processing a triangular shaft sleeve, which aims to improve the processing precision of the triangular shaft sleeve.
In order to achieve the above object, the present invention provides a method for processing a triangular shaft sleeve, the triangular shaft sleeve including a shaped hole and a circular hole, the circular hole being located in a middle portion of the shaped hole, the method comprising:
obtaining a test bar and detecting;
processing an inner circular hole of the test rod;
carrying out heat treatment on the processed test bar;
semi-finish turning a large outer circle and an inner circle hole;
clamping the test bar by using a first tool to finish machining the outer circle and two end faces of the test bar;
and clamping the test bar by adopting a second tool and cutting the special-shaped hole by using a slow-moving wire.
After the second tool is adopted to clamp the test bar and cut the special-shaped hole through the slow-moving wire, the method further comprises the following steps: the test bar was deburred and lettered and then inspected.
Wherein, the special-shaped hole is a triangular hole.
The method comprises the following specific steps of obtaining a test bar and detecting the test bar:
the surface of the test bar is polished according to a preset size;
adopting an ultrasonic detection test bar, and forging after the test bar is qualified;
turning two end faces of the test bar flat;
and detecting the test bar by adopting ultrasonic detection.
The method comprises the following specific steps of:
processing an inner circular hole at the center of the test bar along the axial direction and removing sharp edges;
and after the test bar is clamped and aligned by the three claws, the inner circular hole is processed again.
The method comprises the following specific steps of semi-finish turning of a large excircle and an inner circular hole:
clamping the excircle of one end of the test rod by the hard three claws, semi-finish turning the excircle of the other end to a specified diameter, and machining a circular hole;
processing a step hole and a sink groove in the inner circular hole;
clamping the excircle of the other end of the test rod by using the hard three claws, and semi-finish turning the excircle of one end to the specified diameter;
processing a step hole and a sink groove in the inner circular hole;
and (3) tempering the test bar.
Wherein, adopt the tight test rod of second frock clamp and through the specific step in slow walking silk cutting dysmorphism hole:
pressing a second tool on a cross beam cut by the slow-feeding wire;
the inner hole of the tool is aligned by the wire, and the size of the inner hole of the tool is processed to the size of the inner hole of the test rod;
and (5) placing the part into an inner hole of the tool, and cutting the special-shaped hole through a slow-moving wire.
The invention discloses a method for processing a triangular shaft sleeve, which comprises the following steps: obtaining a test bar and detecting; processing an inner circular hole of the test rod; carrying out heat treatment on the processed test bar; semi-finish turning a large outer circle and an inner circle hole; clamping the test bar by using a first tool to finish machining the outer circle and two end faces of the test bar; and clamping the test bar by adopting a second tool and cutting the special-shaped hole by using a slow-moving wire. The quality of the test bar is detected before manufacturing, an inner circular hole is machined to remove redundant allowance, then heat treatment is carried out to improve strength and reduce deformation, then semi-finish turning and finish machining are carried out to ensure the machining quality, slow-speed wire cutting and electric discharge machining are adopted, parts are not contacted, the machining quality can be better controlled by means of the self-precision of equipment, and the problem of cutter relieving is avoided; the cutting machine adopts the slow-running wire for cutting, effectively avoids unqualified production caused by abrasion of the cutter due to the hardness problem of parts, and has extremely low cost compared with the cutter.
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 obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Figure 1 is a partial assembly view of a rotor component of the present invention;
FIG. 2 is a block diagram of the triangular bushing of the present invention;
FIG. 3 is a first process diagram of a method of manufacturing a triangular bushing according to the present invention;
FIG. 4 is a second process diagram of a method of manufacturing a triangular bushing according to the present invention;
FIG. 5 is a third process diagram of a method of manufacturing a triangular bushing according to the present invention;
FIG. 6 is a fourth process view of the method of manufacturing the boss according to the present invention;
FIG. 7 is a fifth process view illustrating a method of manufacturing a triangular boss according to the present invention;
FIG. 8 is a first tooling drawing of a method of manufacturing a triangular bushing according to the present invention;
FIG. 9 is a second tooling diagram of a method of manufacturing a triangular bushing according to the present invention;
FIG. 10 is a flow chart of a method of manufacturing a triangular bushing in accordance with the present invention;
FIG. 11 is a flow chart of the present invention for obtaining and testing test bars;
FIG. 12 is a flow chart illustrating the process of the present invention for machining the inner circular hole of the test rod;
FIG. 13 is a flow chart of the semi-finish turning of the large outer and inner circular holes of the present invention;
FIG. 14 is a flow chart of the present invention using a second tooling to clamp a test bar and cut a shaped hole with a slow-moving wire.
1-triangular shaft sleeve, 11-special-shaped hole and 12-circular hole.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
Referring to fig. 1 to 14, the present invention provides a method for processing a triangular shaft sleeve, comprising: the triangular shaft sleeve 1 comprises a special-shaped hole 11 and a circular hole 12, the circular hole 12 is located in the middle of the special-shaped hole 11, here, the special-shaped hole 11 is taken as a triangular hole as an example, and the processing method of the triangular shaft sleeve 1 comprises the following steps:
s101, obtaining a test bar and detecting;
the method comprises the following specific steps:
s201, lighting the surface of a test bar according to a preset size;
the surface of the bar was examined for the phi 79X263 light.
S202, adopting an ultrasonic detection test bar, and forging after the test bar is qualified;
forging is carried out according to the specification requirement in the blank drawing.
S203, turning the two end faces of the test bar flat;
two flat end faces are turned, the total length is not less than 146, the roughness is Ra3.2, and the sharp edge chamfer angle is 0.5X45 DEG
S204, detecting the test bar by adopting ultrasonic detection.
Ultrasonic flaw detection is carried out according to the specification, and the acceptance grade is A1.
S102, processing an inner circular hole of the test rod;
the method comprises the following specific steps:
s301, processing an inner circular hole at the center of the test bar along the axial direction and removing sharp edges;
and (4) turning the test bar as required, drilling and turning an inner hole at the center of the test bar along the axial direction to phi 35, and removing a sharp edge.
And S302, after the test bar is clamped and aligned by the three claws, processing the inner circular hole again.
And (3) clamping the three claws, and roughly aligning, drilling and turning an inner hole at the center of the round bar along the axial direction to a phi 35 through hole.
S103, carrying out heat treatment on the processed test bar;
and (4) only carrying out heat treatment on the test bar according to the standard requirement, and inspecting the test bar after the heat treatment according to the standard requirement.
S104, semi-finish turning a large outer circle and an inner circle hole;
the method comprises the following specific steps:
s401, clamping the excircle of one end of a test rod by using a hard three-jaw clamp, semi-finish turning the excircle of the other end of the test rod to a specified diameter, and machining a circular hole 12;
according to the figure 3, the hard three-jaw clamp has a large outer circle at the left end, and the large outer circle is semi-finish-turned to phi 71.4, the length of the large outer circle is 80, and an inner hole phi 38 is arranged at the center-0.1And a length of 20.
S402, processing a step hole and a sink groove in the inner circular hole;
turning two sections of stepped holes at the inner hole to phi 39.8, processing a sink groove to phi 50.4 and width 19.4, and turning a large end face at the right end to ensure the total length 144.
S403, clamping the excircle of the other end of the test rod by using the hard three claws, and semi-finish turning the excircle of one end to the specified diameter;
turning the part, clamping a large excircle by using the hard three-jaw clamp according to the figure 3, turning the large excircle to phi 71.4, and turning the right end face to the total length of 142.5.
S404, processing a step hole and a sink groove in the inner round hole;
inner hole phi 38 at the center of the vehicle-0.1Length 20 and two stepped holes at the inner hole to phi 39.8.
S405, hardening and tempering the test bar.
Tempering: HRC 40-44.
According to the figure 4, after the large excircle at the left end of the hard three-jaw clamp is aligned and the end face runout is smaller than 0.02mm, turning the right end face with the size of 142.5, carrying out semi-finishing to connect and turn the large excircle to phi 71.4, machining an inner hole phi 38-0.1 at the right end of the center, and machining a sink groove at the inner hole to phi 39.8;
according to the figure 5, after the large excircle at the left end of the hard three-jaw clamp is aligned and the end face runout is less than 0.2mm, turning the right end face with the size of 55, turning the large excircle at the right end to phi 70.4-0.1, and turning an inner hole phi 38.6+0.1 at the right end at the center; turning the part, turning the big outer circle phi 70.4-0.1 by the hard three-jaw clamp, turning the big outer circle phi 70.4-0.1, turning the left end face to the total length of 140+0.2, and turning the inner hole phi 38.6+0.1 at the left end of the center;
according to the figure 6, the hard three-jaw clamps the large excircle, the excircle is aligned, the end face runout is within 0.05, and the inner hole is ground to the size phi 39 +/-0.01 (the size is ensured to be consistent as much as possible when in batch production, and the equipment used in the invention can reach +/-0.001).
S105, clamping the test bar by using a first tool to finish machining the outer circle and the two end faces of the test bar;
by using the first tool shown in FIG. 8, an inner hole processed by S23 is used as a positioning reference, and an outer circle is ground to phi 70-0.1, so that the coaxiality is ensured to be 0.01; light out of two end faces and ensures the verticality to be 0.01.
S106, the test bar is clamped by the second tool and the special-shaped hole 11 is cut by the slow-moving wire.
The method comprises the following specific steps:
s501, pressing a second tool on a cross beam cut by the slow-moving wire;
s502, aligning the inner hole of the tool by the aid of a wire, and processing the size of the inner hole of the tool to the size of the inner hole of the test rod;
s503, placing the part into an inner hole of the tool, and cutting the special-shaped hole 11 through a slow-moving wire.
The second tooling shown in fig. 9 was used, and the tooling had an internal bore of initial dimension of phi 50. After the tool is tightly pressed on a beam cut by a slow-moving wire, the inner hole of the tool is roughly aligned by a leaning wire, and the size phi 50 of the inner hole of the tool is processed to phi 70 (the size and the actual size of a part are matched on site, and the clearance value is ensured to be-0.005 to + 0.005); the work preparation is proper, at the moment, the part is not in the center position of the slow-moving wire, the part is lightly put into the inner hole of the tool in a free state, and the ultra-long special-shaped hole 11 is cut through the slow-moving wire.
S107, deburring and lettering the test bar, and then checking.
Due to the adoption of the technical scheme, the invention has the following beneficial effects:
1. the hardness of the part is HRC40-44, and a milling scheme is adopted, so that the cutter is quickly abraded, and the dimensional tolerance, the roughness and the form and position tolerance can not be ensured; even if a coating cutter is adopted for processing, the cutter abrasion condition in the finish machining process cannot be avoided, so that the batch production and the stability of the product quality cannot be realized. The problem of high part hardness is effectively avoided by adopting the slow-moving wire for cutting, and the cost is extremely low compared with a cutter;
2. the length-diameter ratio of the inner hole of the part reaches 3:1, milling is adopted, the length-diameter ratio of the cutter can reach about 5:1, the rigidity of the whole cutter system is poor according to the relation between the rigidity of the cutter system and the diameter and the length of the cutter, and cutter back-off phenomena of different degrees occur in the machining process, so that the design requirements cannot be guaranteed at all. The wire cutting is carried out by adopting a slow walking wire, the electric discharge machining is carried out, parts are not contacted, and the machining quality can be better controlled by depending on the self precision of equipment.
3. The slow-walking wire cutting is carried out, the center of the part is aligned by a method that copper wires are aligned with inner holes, the diameter and the alignment degree of the copper wires directly influence the positioning of the center of the part, and finally the out-of-tolerance of the coaxiality of the special-shaped hole 11 and the excircle and the verticality of the end face are caused; therefore, a special tool is designed, the inner hole of the special tool is reserved with allowance, and the inner hole of the special tool is cut and processed by using a slow-moving wire, so that the size of the inner hole of the special tool and the size of the excircle of the part reach micro transition fit. Therefore, the inner hole of the special tool is processed by the slow wire feeding equipment, the centering is automatic, and the tool setting error is avoided; moreover, the inner hole size of the special tool and the outer circle size of the part reach micro transition fit, and under the acting force of the dead weight of the part, the outer circle of the part and the inner hole coaxiality of the special tool can be greatly guaranteed. By designing the special tool, the special tool and the part are guaranteed to be simultaneously machined in the same equipment at the same time period, the repeated positioning precision is improved, the tool setting error is avoided, and the requirements of the size, the roughness and the form and position tolerance of the part are well guaranteed.
4. Due to the design of the special tool, four exhaust grooves are added, and the parts can be conveniently loaded under the condition of micro transition fit. Under the micro transition fit, the joint of the inner hole and the outer circle utilizes the lubricating and adsorbing effects of the oil film, so that the part and the special tool are combined into a whole and are not separated in the machining process.
While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (7)
1. A method for processing a triangular shaft sleeve is characterized in that,
the triangular shaft sleeve comprises a special-shaped hole and a circular hole, the circular hole is positioned in the middle of the special-shaped hole, and the processing method of the triangular shaft sleeve comprises the following steps:
obtaining a test bar and detecting;
processing an inner circular hole of the test rod;
carrying out heat treatment on the processed test bar;
semi-finish turning a large outer circle and an inner circle hole;
clamping the test bar by using a first tool to finish machining the outer circle and two end faces of the test bar;
and clamping the test bar by adopting a second tool and cutting the special-shaped hole by using a slow-moving wire.
2. The method of manufacturing a triangular shaft sleeve according to claim 1,
after the test bar is clamped by the second tool and the special-shaped hole is cut by the slow-moving wire, the method further comprises the following steps: the test bar was deburred and lettered and then inspected.
3. The method of manufacturing a triangular shaft sleeve according to claim 1,
the special-shaped hole is a triangular hole.
4. The method of manufacturing a triangular shaft sleeve according to claim 1,
the concrete steps of obtaining the test bar and detecting are as follows:
the surface of the test bar is polished according to a preset size;
adopting an ultrasonic detection test bar, and forging after the test bar is qualified;
turning two end faces of the test bar flat;
and detecting the test bar by adopting ultrasonic detection.
5. The method of manufacturing a triangular shaft sleeve according to claim 1,
the specific steps for processing the inner circular hole of the test rod are as follows:
processing an inner circular hole at the center of the test bar along the axial direction and removing sharp edges;
and after the test bar is clamped and aligned by the three claws, the inner circular hole is processed again.
6. The method of manufacturing a triangular shaft sleeve according to claim 1,
the method comprises the following specific steps of semi-finish turning the large outer circle and the inner circle hole:
clamping the excircle of one end of the test rod by the hard three claws, semi-finish turning the excircle of the other end to a specified diameter, and machining a circular hole;
processing a step hole and a sink groove in the inner circular hole;
clamping the excircle of the other end of the test rod by using the hard three claws, and semi-finish turning the excircle of one end to the specified diameter;
processing a step hole and a sink groove in the inner circular hole;
and (3) tempering the test bar.
7. The method for processing the triangular shaft sleeve according to claim 1, wherein the specific steps of clamping the test bar by using the second tool and cutting the special-shaped hole by using the slow-moving wire are as follows:
pressing a second tool on a cross beam cut by the slow-feeding wire;
the inner hole of the tool is aligned by the wire, and the size of the inner hole of the tool is processed to the size of the inner hole of the test rod;
and (5) placing the part into an inner hole of the tool, and cutting the special-shaped hole through a slow-moving wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111219082.5A CN113814667B (en) | 2021-10-20 | 2021-10-20 | Processing method of triangular shaft sleeve |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111219082.5A CN113814667B (en) | 2021-10-20 | 2021-10-20 | Processing method of triangular shaft sleeve |
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| CN113814667A true CN113814667A (en) | 2021-12-21 |
| CN113814667B CN113814667B (en) | 2023-11-03 |
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Citations (9)
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|---|---|---|---|---|
| WO1980002525A1 (en) * | 1979-05-14 | 1980-11-27 | T Brewer | Manufactured contoured internal diameter bushing |
| JP2002339093A (en) * | 2001-05-15 | 2002-11-27 | Hikari Tekku Kk | Method of manufacturing sleeve |
| US20030101855A1 (en) * | 2001-11-30 | 2003-06-05 | J.F. Berns Co., Inc. | Machine tool spindle liners and methods for making same |
| EP1384537A1 (en) * | 2002-07-25 | 2004-01-28 | Tsubakimoto Chain Co. | Method of producing a bushing |
| CN102069346A (en) * | 2009-11-23 | 2011-05-25 | 常州现代设计与制造中心 | Process for processing spindle sleeve of built-in motorized spindle unit |
| CN103659160A (en) * | 2013-11-22 | 2014-03-26 | 哈尔滨汽轮机厂有限责任公司 | Method for rough turning turbine seal sleeve made of high-temperature alloy GH901 |
| CN103831496A (en) * | 2012-11-20 | 2014-06-04 | 苏州星诺奇传动科技有限公司 | Method for machining grooves in shaft |
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-
2021
- 2021-10-20 CN CN202111219082.5A patent/CN113814667B/en active Active
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|---|---|---|---|---|
| WO1980002525A1 (en) * | 1979-05-14 | 1980-11-27 | T Brewer | Manufactured contoured internal diameter bushing |
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| US20030101855A1 (en) * | 2001-11-30 | 2003-06-05 | J.F. Berns Co., Inc. | Machine tool spindle liners and methods for making same |
| EP1384537A1 (en) * | 2002-07-25 | 2004-01-28 | Tsubakimoto Chain Co. | Method of producing a bushing |
| CN102069346A (en) * | 2009-11-23 | 2011-05-25 | 常州现代设计与制造中心 | Process for processing spindle sleeve of built-in motorized spindle unit |
| CN103831496A (en) * | 2012-11-20 | 2014-06-04 | 苏州星诺奇传动科技有限公司 | Method for machining grooves in shaft |
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| JP2018105341A (en) * | 2016-12-22 | 2018-07-05 | 株式会社荏原製作所 | Shaft sleeve, rotary machine and method for manufacturing shaft sleeve |
| CN110860866A (en) * | 2019-11-05 | 2020-03-06 | 东莞市源开鑫精密科技有限公司 | Method for machining precise special-shaped hole |
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| 郭奇等: "不锈钢薄壁轴套零件的加工方法研究", 轻工科技, vol. 36, no. 6 * |
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|---|---|
| CN113814667B (en) | 2023-11-03 |
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