CN113635019A - Tool for press-fitting rotor shaft of multi-rotary-vane vacuum pump - Google Patents
Tool for press-fitting rotor shaft of multi-rotary-vane vacuum pump Download PDFInfo
- Publication number
- CN113635019A CN113635019A CN202110930960.8A CN202110930960A CN113635019A CN 113635019 A CN113635019 A CN 113635019A CN 202110930960 A CN202110930960 A CN 202110930960A CN 113635019 A CN113635019 A CN 113635019A
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- China
- Prior art keywords
- vacuum pump
- rotor
- annular ring
- press
- pressure head
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- 230000002093 peripheral effect Effects 0.000 claims abstract description 7
- 230000000694 effects Effects 0.000 claims abstract description 5
- 230000000670 limiting effect Effects 0.000 claims description 13
- 238000003825 pressing Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 3
- 238000004663 powder metallurgy Methods 0.000 description 2
- 238000007667 floating Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
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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
- B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
- B23P19/02—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for connecting objects by press fit or for detaching same
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
Abstract
The invention provides a tool for press-mounting a rotor shaft of a multi-rotary-vane vacuum pump, which comprises a pressure head, an adjusting sleeve, a supporting column and a base, wherein the pressure head is arranged on the base; the support is a cylindrical body with an axial through hole, the lower part of the support is fixedly arranged on the base, the middle section of the support is provided with external threads, and the size of the upper end surface of the support is matched with the central triangular area of the vacuum pump rotor; the adjusting sleeve is of a cylindrical structure with a stepped through hole and comprises a large hole section at the upper part and a small hole section at the lower part, wherein the inner peripheral surface of the small hole section is provided with an internal thread matched with the external thread of the support; the pressure head includes apron and annular ring, the annular ring is connected in the lower surface of apron, and the central part that the apron lower surface corresponds the annular ring is equipped with decurrent bellying, and when the pressure head was down when making linear motion under the press effect, the lower terminal surface of annular ring can contact the cooperation with the up end of adjusting collar. The technical scheme can ensure the depth of the rotor shaft pressed into the rotor, namely the assembly precision.
Description
Technical Field
The invention relates to the technical field of machining, in particular to a tool for press-fitting a rotor shaft of a multi-rotary-vane vacuum pump.
Background
The high-speed vacuum pump for the automobile generally adopts a multi-rotor-plate form for vacuumizing, and in order to reduce design and product cost during design, a rotor of the vacuum pump is generally manufactured by powder metallurgy, a rotor shaft and the rotor need interference fit, and the rotor shaft drives the rotor to rotate.
When the rotor shaft and the rotor are pressed, the assembly distance between the end face of the rotor shaft and the end face of the rotor needs to be ensured, and the precision is high. Because the rotor is manufactured by a powder metallurgy process, the opposite end face of the central triangular area of the end face of the rotor is concave, and further processing is generally not carried out after molding (see figure 1), the size has larger floating and can not be used for positioning; the end faces of the rotor other than the triangular region have high accuracy, but the structural strength of the rotor cannot withstand too large axial pressure due to the plurality of vane grooves (see fig. 2).
The traditional press mounting mode is that a rotor is directly placed on a support with a hollow cylinder on the upper portion, then a press machine is used for directly pressing a rotor shaft into a shaft hole of the rotor, the assembling precision of the rotor and the rotor shaft is completely guaranteed by the moving precision of the press machine, but the center area of the end face of the rotor matched with the support is a non-processing face, and therefore the assembling precision of the distance between the end face of the rotor shaft and the end face of the excircle of the rotor cannot be guaranteed.
Disclosure of Invention
The invention aims to provide a tool for press-fitting a rotor shaft of a multi-rotary-vane vacuum pump, which can ensure the press-in depth of the rotor shaft, namely the assembly precision.
In order to solve the technical problems, the technical scheme of the invention is as follows: a tool for press-mounting a multi-rotary-vane vacuum pump rotor shaft comprises a pressure head, an adjusting sleeve, a supporting column and a base; the support is a cylindrical body with an axial through hole, the lower part of the support is fixedly arranged on the base, the middle section of the support is provided with external threads, and the size of the upper end surface of the support is matched with the central triangular area of the vacuum pump rotor; the adjusting sleeve is of a cylindrical structure with a stepped through hole and comprises a large hole section at the upper part and a small hole section at the lower part, wherein the inner peripheral surface of the small hole section is provided with an internal thread matched with the external thread of the support; the pressure head includes apron and annular ring, the annular ring is connected in the lower surface of apron, and the central part that the apron lower surface corresponds the annular ring is equipped with decurrent bellying, and when the pressure head was down when making linear motion under the press effect, the lower terminal surface of annular ring can contact the cooperation with the up end of adjusting collar.
The working process of the invention is as follows: 1) mounting and fixing a base on the rack; 2) placing a rotor of the vacuum pump on the support column, covering the upper end surface of the support column by a central triangular area on the lower end surface of the rotor, and rotating the adjusting sleeve to enable the upper end surface of the adjusting sleeve to be flush with the periphery of the upper end surface of the rotor; 3) putting the rotor shaft into the central hole of the rotor; 4) and starting the press to move downwards, pressing the rotor shaft into the rotor by the convex part of the press head, and stopping pressing by the press machine after the annular ring of the press head is contacted with the upper end surface of the adjusting sleeve, so that the press fitting is completed. Because the upper end face of the adjusting sleeve is parallel and level with the periphery of the upper end face of the rotor, the pressure head presses the rotor shaft downwards until the annular ring of the pressure head contacts with the upper end face of the adjusting sleeve, so that the limiting effect can be achieved, and high-precision assembly can be completed on the premise of protecting the rotor.
The further technical scheme of the invention is as follows: the tool further comprises a limiting block, convex teeth are arranged on the upper portion of the limiting block, a gear ring is arranged on the outer peripheral face of the small hole section of the adjusting sleeve, the convex teeth on the limiting block can be meshed with the gear ring of the adjusting sleeve, and a slot for fixing the limiting block is formed in the base. Thus, the adjusting sleeve can be axially limited.
Preferably, the pillar is a stepped shaft, and the upper part of the pillar is a small-diameter section and the lower part of the pillar is a large-diameter section.
Furthermore, a plurality of gaps are arranged on the annular ring of the pressure head at intervals. The gap is arranged, so that whether the rotor shaft is pressed in place or not can be observed, and then the adjusting sleeve is adjusted up and down according to needs.
Drawings
FIG. 1 is a schematic view of a central triangle of a rotor of a vacuum pump;
FIG. 2 is a schematic view of a weak area of a rotor of the vacuum pump;
FIG. 3 is a schematic view of the overall structure of the tool in the embodiment of the present invention;
FIG. 4 is an exploded view of a tooling assembly according to an embodiment of the present invention;
1-pressure head 2-rotor shaft 3-rotor 4-adjusting sleeve
5-support 6-locking block 7-base.
Detailed Description
In order to facilitate understanding of those skilled in the art, the present invention will be further described with reference to the following examples and drawings, which are not intended to limit the present invention.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
In the description of the present invention, it should be noted that, unless otherwise specified and limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, mechanically or electrically connected, or interconnected between two elements, directly or indirectly through intervening media, and the specific meaning of the terms may be understood by those skilled in the art according to their specific situation.
As shown in fig. 1 to 4, a tool for press-fitting a rotor shaft of a multi-vane rotary vacuum pump comprises a pressure head 1, an adjusting sleeve 4, a strut 5, a limiting block 6 and a base 7; the strut 5 is a stepped shaft with an axial through hole, the upper part of the stepped shaft is a small-diameter section, the lower part of the stepped shaft is a large-diameter section, the lower part of the strut 5 is fixedly arranged on the base 7, the middle section of the strut 5 is provided with external threads, and the size of the upper end surface of the strut 5 is matched with the central triangular area of the rotor 3 of the vacuum pump; the adjusting sleeve 4 is of a cylindrical structure with a stepped through hole and comprises a large hole section at the upper part and a small hole section at the lower part, wherein the inner peripheral surface of the small hole section is provided with an internal thread matched with the external thread of the support column, and the outer peripheral surface of the small hole section is provided with a gear ring; the upper part of the limiting block 6 is provided with a convex tooth meshed with the gear ring of the adjusting sleeve 4, and the base 7 is provided with a slot for fixing the limiting block 6; pressure head 1 includes apron and annular ring, and this annular ring is connected in the lower surface of apron, and the interval is provided with a plurality of breachs on the annular ring, and the central part that the apron lower surface corresponds the annular ring is equipped with decurrent bellying, when pressure head 1 is down when making linear motion under the press effect, the lower terminal surface of annular ring can contact the cooperation with the up end of adjusting collar 4.
As shown in fig. 3 and 4, the working process of this embodiment is: 1) the base 7 is fixedly arranged on the rack; 2) placing the rotor 3 on the support column, covering the upper end surface of the support column 5 by a central triangular area on the lower end surface of the rotor 3, and rotating the adjusting sleeve 4 to enable the upper end surface of the adjusting sleeve 4 to be flush with the periphery of the upper end surface of the rotor 3; 3) inserting the locking block 6 to axially position the adjusting sleeve 4; 4) placing the rotor shaft 2 into the central hole of the rotor 3; 5) and starting the press to move downwards, pressing the rotor shaft 2 into the shaft center hole of the rotor 3 by the convex part of the press head 1, and stopping pressing by the press after the annular ring of the press head 1 is contacted with the upper end surface of the adjusting sleeve 4, thus finishing the press fitting. Because the up end of adjusting collar 4 is parallel and level with the periphery of rotor 3 up end, pressure head 1 descends the pressure equipment rotor shaft, and the annular ring that until pressure head 1 contacts with the up end of adjusting collar 4 promptly stops, just so can play spacing effect to realized accomplishing high accuracy assembly under the prerequisite of protecting the rotor.
The above embodiments are preferred implementations of the present invention, and the present invention can be implemented in other ways without departing from the spirit of the present invention.
Some of the drawings and descriptions of the present invention have been simplified to facilitate the understanding of the improvements over the prior art by those skilled in the art, and some other elements have been omitted from this document for the sake of clarity, and it should be appreciated by those skilled in the art that such omitted elements may also constitute the subject matter of the present invention.
Claims (4)
1. The utility model provides a frock for many sliding vanes vacuum pump rotor shaft of pressure equipment which characterized in that: the tool comprises a pressure head (1), an adjusting sleeve (4), a support column (5) and a base (7); the vacuum pump is characterized in that the strut (5) is a cylindrical body with an axial through hole, the lower part of the strut (5) is fixedly arranged on the base (7), an external thread is arranged at the middle section of the strut (5), and the size of the upper end surface of the strut (5) is matched with a central triangular area of a rotor (3) of the vacuum pump; the adjusting sleeve (4) is of a cylindrical structure with a stepped through hole and comprises a large hole section at the upper part and a small hole section at the lower part, wherein the inner peripheral surface of the small hole section is provided with an internal thread matched with the external thread of the support; pressure head (1) is including apron and annular ring, the annular ring is connected in the lower surface of apron, and the central part that the apron lower surface corresponds the annular ring is equipped with decurrent bellying, and when pressure head (1) down made linear motion under the press effect, the lower terminal surface of annular ring can contact the cooperation with the up end of adjusting collar.
2. The tool for press-fitting the rotor shaft of the multi-vane rotary vacuum pump according to claim 1, wherein: the tool further comprises a limiting block (6), convex teeth are arranged on the upper portion of the limiting block (6), a gear ring is arranged on the outer peripheral face of the small hole section of the adjusting sleeve (4), the convex teeth on the limiting block (6) can be meshed with the gear ring of the adjusting sleeve (4), and a slot for fixing the limiting block (6) is formed in the base (7).
3. A tool for press-fitting a rotor shaft of a multi-vane rotary vacuum pump according to claim 1 or 2, wherein: the strut (5) is a stepped shaft, the upper part of the stepped shaft is a small-diameter section, and the lower part of the stepped shaft is a large-diameter section.
4. A tool for press-fitting a rotor shaft of a multi-vane rotary vacuum pump according to claim 1 or 2, wherein: a plurality of gaps are arranged on the annular ring of the pressure head (1) at intervals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110930960.8A CN113635019A (en) | 2021-08-13 | 2021-08-13 | Tool for press-fitting rotor shaft of multi-rotary-vane vacuum pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110930960.8A CN113635019A (en) | 2021-08-13 | 2021-08-13 | Tool for press-fitting rotor shaft of multi-rotary-vane vacuum pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113635019A true CN113635019A (en) | 2021-11-12 |
Family
ID=78421552
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110930960.8A Pending CN113635019A (en) | 2021-08-13 | 2021-08-13 | Tool for press-fitting rotor shaft of multi-rotary-vane vacuum pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113635019A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5323530A (en) * | 1992-07-27 | 1994-06-28 | Mitsubishi Materials Corporation | Apparatus for assembling rotors |
| CN103956864A (en) * | 2014-04-14 | 2014-07-30 | 宁波狮球通风机电有限公司 | Rotor shaft press-fitting die |
| CN204041683U (en) * | 2014-08-16 | 2014-12-24 | 超群机电制造(杭州)有限公司 | A kind of self-locking screw |
| CN105805142A (en) * | 2016-05-25 | 2016-07-27 | 江西洪都航空工业集团有限责任公司 | Screw thread anti-looseness device characterized by adoption of toothed limiting mode |
| CN107263042A (en) * | 2016-04-08 | 2017-10-20 | 贵州黎阳航空动力有限公司 | Aero-engine high-pressure compressor assembles centering and rotating device |
| CN111313625A (en) * | 2019-12-25 | 2020-06-19 | 苏州绿控传动科技股份有限公司 | Motor rotor press-fitting tool and corresponding installation method |
| CN211072397U (en) * | 2019-10-31 | 2020-07-24 | 纬泰机械(上海)有限公司 | Height-adjustable cushion block |
| CN211231833U (en) * | 2019-12-26 | 2020-08-11 | 广州矿程建材有限公司 | Quantitative ball water transfer valve |
| CN211481112U (en) * | 2019-12-25 | 2020-09-11 | 苏州绿控传动科技股份有限公司 | Motor rotor press-fitting tool |
-
2021
- 2021-08-13 CN CN202110930960.8A patent/CN113635019A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5323530A (en) * | 1992-07-27 | 1994-06-28 | Mitsubishi Materials Corporation | Apparatus for assembling rotors |
| CN103956864A (en) * | 2014-04-14 | 2014-07-30 | 宁波狮球通风机电有限公司 | Rotor shaft press-fitting die |
| CN204041683U (en) * | 2014-08-16 | 2014-12-24 | 超群机电制造(杭州)有限公司 | A kind of self-locking screw |
| CN107263042A (en) * | 2016-04-08 | 2017-10-20 | 贵州黎阳航空动力有限公司 | Aero-engine high-pressure compressor assembles centering and rotating device |
| CN105805142A (en) * | 2016-05-25 | 2016-07-27 | 江西洪都航空工业集团有限责任公司 | Screw thread anti-looseness device characterized by adoption of toothed limiting mode |
| CN211072397U (en) * | 2019-10-31 | 2020-07-24 | 纬泰机械(上海)有限公司 | Height-adjustable cushion block |
| CN111313625A (en) * | 2019-12-25 | 2020-06-19 | 苏州绿控传动科技股份有限公司 | Motor rotor press-fitting tool and corresponding installation method |
| CN211481112U (en) * | 2019-12-25 | 2020-09-11 | 苏州绿控传动科技股份有限公司 | Motor rotor press-fitting tool |
| CN211231833U (en) * | 2019-12-26 | 2020-08-11 | 广州矿程建材有限公司 | Quantitative ball water transfer valve |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20211112 |