CN219633117U

CN219633117U - Tool for machining molecular pump mandrel

Info

Publication number: CN219633117U
Application number: CN202320064684.6U
Authority: CN
Inventors: 韩玉宾; 王文涛
Original assignee: Shandong Century Antai Vacuum Equipment Co ltd
Current assignee: Shandong Century Antai Vacuum Equipment Co ltd
Priority date: 2023-01-07
Filing date: 2023-01-07
Publication date: 2023-09-05
Anticipated expiration: 2033-01-07

Abstract

The utility model relates to the technical field of molecular pump production and discloses a tooling for machining a molecular pump mandrel, which comprises a base, a mounting mechanism and a positioning mechanism, wherein the base is of a cylindrical structure, the positioning mechanism is connected to one end of the base and is used for positioning the mandrel, the mounting mechanism is connected to one end of the base far away from the positioning mechanism, and the mounting mechanism is used for being connected with a rotating shaft of a machine tool. The utility model has the effect of improving the machining precision of the mandrel of the molecular pump.

Description

Tool for machining molecular pump mandrel

Technical Field

The utility model relates to the field of molecular pump production, in particular to a tooling for machining a molecular pump mandrel.

Background

The molecular pump is a vacuum pump which uses a rotor rotating at a high speed to transfer momentum to gas molecules to obtain directional speed, so that the gas molecules are compressed and driven to an exhaust port to be pumped out for a front stage. In the working process of the molecular pump, the rotating speed of the rotor reaches 20000r/min, so that the machining precision of the core shaft of the molecular pump is very high.

Currently, in the production and processing process of a molecular pump, a three-jaw chuck is used for clamping a mandrel of the molecular pump, the mandrel of the molecular pump is fixed on a rotating shaft of a machine tool, and then the mandrel of the molecular pump is processed.

With respect to the related art, the inventor considers that the three-jaw chuck is used for clamping the mandrel, so that the error of positioning the mandrel is large, a certain angle exists between the axis of the mandrel and the axis of the rotating shaft, and the defect of low machining precision of the mandrel exists.

Disclosure of Invention

In order to solve the problem of low machining precision of a mandrel, the utility model provides a tool for machining a mandrel of a molecular pump.

The utility model provides a tooling for machining a molecular pump mandrel, which adopts the following technical scheme:

the utility model provides a frock is used in machining of molecular pump dabber, includes base, installation mechanism and positioning mechanism, the base is the cylinder structure, positioning mechanism connects the one end at the base, positioning mechanism is used for fixing a position the dabber, installation mechanism connects the one end of keeping away from positioning mechanism at the base, installation mechanism is used for being connected with the pivot of lathe.

Through adopting above-mentioned technical scheme, connect positioning mechanism on the base, utilize positioning mechanism to fix a position the dabber, make dabber and the coaxial setting of base, reuse installation mechanism is connected the pivot of base and lathe, improves the axiality between dabber and the pivot of lathe to improve the machining precision of dabber.

Optionally, positioning mechanism includes the locating plate, the locating plate is the cylinder structure, fixed connection can be dismantled with the base to the locating plate, locating plate and the coaxial setting of base, the inner wall butt of locating plate and dabber.

Through adopting above-mentioned technical scheme, fixed connection locating plate on the base utilizes the locating plate to fix a position the dabber, and when the lateral wall of locating plate and the inner wall butt of dabber, dabber location is accomplished.

Optionally, a guiding plane for guiding the mandrel is provided at one end of the locating plate away from the base, and the cross-sectional area of the locating plate gradually decreases from one end close to the base to one end far away from the base.

By adopting the technical scheme, the guide surface is arranged at one end of the locating plate far away from the base, so that the convenience of connection of the mandrel and the locating plate is improved.

Optionally, the connecting hole has been seted up on the locating plate, connecting hole and the coaxial setting of locating plate, the one end fixedly connected with connecting block of installation mechanism is kept away from to the base, the connecting block is the cylinder structure, the connecting block sets up with the base is coaxial, the connecting block corresponds the setting with the connecting hole.

Optionally, connect in the grafting has first bolt on the connecting block, first bolt and connecting block threaded connection, first bolt is used for fixing the locating plate.

Optionally, the installation mechanism includes mounting plate and multiunit connecting element, mounting plate and base fixed connection, multiunit connecting element all are connected with the mounting plate.

Optionally, the connecting element includes second bolt and nut, the second bolt wears to establish on the mounting disc, the bolt head of second bolt is located the mounting disc and keeps away from the one side of base, nut and second bolt threaded connection, the nut is located the mounting disc and is close to one side of base.

Optionally, the base is threaded with a third bolt, and a positioning hole for threaded connection of the third bolt is formed in the base.

Through adopting above-mentioned technical scheme, offered the mating holes on the axle core, bolted connection is in the locating hole after the third bolt passes the mating holes, utilizes the third bolt to fix the dabber, improves the stability of being connected between dabber and the base to the security of dabber processing is further improved.

In summary, the present utility model includes at least one of the following beneficial technical effects:

1. through connecting positioning mechanism on the base, utilize positioning mechanism to fix a position the dabber, make dabber and the coaxial setting of base, reuse installation mechanism to be connected the pivot of base and lathe, improve the axiality between dabber and the pivot of lathe to improve the machining precision of dabber.

2. The third bolt is used for fixing the mandrel, so that the stability of connection between the mandrel and the base is improved, and the safety of mandrel machining is further improved.

Drawings

FIG. 1 is a schematic overall structure of an embodiment of the present utility model;

fig. 2 is a schematic structural view of a positioning mechanism part in the embodiment of the utility model.

Reference numerals: 100. a base; 110. a connecting block; 200. a mounting mechanism; 210. a mounting plate; 220. a connecting member; 221. a second bolt; 222. a nut; 300. a positioning mechanism; 310. a positioning plate; 311. a connection hole; 320. a first bolt; 330. positioning holes; 340. and a third bolt.

Detailed Description

The utility model is described in further detail below with reference to fig. 1-2.

The embodiment of the utility model discloses a tooling for machining a mandrel of a molecular pump. Referring to fig. 1 and 2, a molecular pump mandrel machining tool includes a base 100 having a cylindrical structure, and an axis of the base 100 is vertically disposed. The upper end of the base 100 is provided with a positioning mechanism 300, and the positioning mechanism 300 is used for positioning the core shaft of the molecular pump. The lower end of the base 100 is provided with a mounting mechanism 200, and the mounting mechanism 200 is used for being connected with a rotating shaft of a machine tool.

Referring to fig. 1 and 2, the positioning mechanism 300 includes a plurality of positioning plates 310 having different diameters, and the positioning plates 310 have a cylindrical structure. The locating plate 310 is coaxially provided with a connecting hole 311, the upper end of the base 100 is fixedly connected with a connecting block 110, the connecting block 110 is of a cylindrical structure, the connecting block 110 and the base 100 are coaxially arranged, and the connecting block 110 and the connecting hole 311 are correspondingly arranged. The connecting block 110 is inserted with a first bolt 320, the first bolt 320 is in threaded connection with the connecting block 110, and the first bolt 320 is used for fixing the positioning plate 310. By detachably and fixedly connecting the positioning plate 310 with the base 100 by using the first bolts 320, when the mandrel is mounted, a proper positioning plate 310 is selected according to the size of the mandrel; the positioning plate 310 is positioned by the cooperation of the connecting block 110 and the connecting hole 311, so that the convenience of the installation of the positioning plate 310 is improved.

Referring to fig. 1 and 2, a guide plane for guiding the spindle is formed at an end of the positioning plate 310 remote from the base 100, and the cross-sectional area of the positioning plate 310 is gradually reduced from an end near the base 100 to an end remote from the base 100. By providing a guide surface at the end of the positioning plate 310 away from the base 100, the convenience of connecting the mandrel with the positioning plate 310 is improved.

Referring to fig. 1 and 2, a third bolt 340 is screw-coupled to the base 100, and a positioning hole 330 for screw-coupling the third bolt 340 is formed in the base 100. The shaft core is provided with a matching hole, the third bolt 340 passes through the matching hole and then is connected in the positioning hole 330 by a bolt, the third bolt 340 is utilized to fix the mandrel, the stability of connection between the mandrel and the base 100 is improved, and therefore the safety of mandrel processing is further improved.

Referring to fig. 1 and 2, the mounting mechanism 200 includes a mounting plate 210, and the mounting plate 210 is fixedly coupled to the base 100. A plurality of sets of connection members 220 are mounted on the mounting plate 210, and the plurality of sets of connection members 220 are disposed at equal intervals along the circumferential direction of the mounting plate 210.

Referring to fig. 1 and 2, the connection member 220 includes a second bolt 221 and a nut 222, the second bolt 221 is penetrated on the mounting plate 210, a head of the second bolt 221 is positioned at a side of the mounting plate 210 remote from the base 100, the nut 222 is threadedly connected with the second bolt 221, and the nut 222 is positioned at a side of the mounting plate 210 close to the base 100.

The implementation principle of the tooling for machining the molecular pump mandrel provided by the embodiment of the utility model is as follows: the positioning mechanism 300 is connected to the base 100, the mandrel is positioned by the positioning mechanism 300, so that the mandrel and the base 100 are coaxially arranged, the base 100 is connected with the rotating shaft of the machine tool by the mounting mechanism 200, and the coaxiality between the mandrel and the rotating shaft of the machine tool is improved, so that the machining precision of the mandrel is improved.

The above embodiments are not intended to limit the scope of the present utility model, so: all equivalent changes in structure, shape and principle of the utility model should be covered in the scope of protection of the utility model.

Claims

1. The utility model provides a frock is used in processing of molecular pump dabber which characterized in that: including base (100), installation mechanism (200) and positioning mechanism (300), base (100) are the cylinder structure, positioning mechanism (300) are connected in the one end of base (100), positioning mechanism (300) are used for fixing a position the dabber, installation mechanism (200) are connected in the one end that positioning mechanism (300) were kept away from to base (100), installation mechanism (200) are used for being connected with the pivot of lathe.

2. The tooling for machining a molecular pump mandrel according to claim 1, wherein: the positioning mechanism (300) comprises a positioning plate (310), the positioning plate (310) is of a cylindrical structure, the positioning plate (310) is detachably and fixedly connected with the base (100), the positioning plate (310) is coaxially arranged with the base (100), and the positioning plate (310) is abutted to the inner wall of the mandrel.

3. The tooling for machining a molecular pump mandrel according to claim 2, wherein: the one end that locating plate (310) kept away from base (100) is offered and is used for carrying out the direction plane that leads to the dabber, the cross-sectional area of locating plate (310) is from being close to the one end of base (100) to keeping away from the one end of base (100) and reduce gradually.

4. A tooling for machining a molecular pump mandrel as claimed in claim 3, wherein: the positioning plate (310) is provided with a connecting hole (311), the connecting hole (311) and the positioning plate (310) are coaxially arranged, one end, away from the mounting mechanism (200), of the base (100) is fixedly connected with a connecting block (110), the connecting block (110) is of a cylindrical structure, the connecting block (110) and the base (100) are coaxially arranged, and the connecting block (110) and the connecting hole (311) are correspondingly arranged.

5. The tooling for machining the molecular pump mandrel according to claim 4, wherein: the connecting block (110) is inserted with a first bolt (320), the first bolt (320) is in threaded connection with the connecting block (110), and the first bolt (320) is used for fixing the locating plate (310).

6. The tooling for machining a molecular pump mandrel according to claim 1, wherein: the mounting mechanism (200) comprises a mounting plate (210) and a plurality of groups of connecting members (220), wherein the mounting plate (210) is fixedly connected with the base (100), and the plurality of groups of connecting members (220) are connected with the mounting plate (210).

7. The tooling for machining the molecular pump mandrel of claim 6, wherein: the connecting member (220) comprises a second bolt (221) and a nut (222), the second bolt (221) is arranged on the mounting plate (210) in a penetrating mode, the bolt head of the second bolt (221) is located on one side, far away from the base (100), of the mounting plate (210), the nut (222) is in threaded connection with the second bolt (221), and the nut (222) is located on one side, close to the base (100), of the mounting plate (210).

8. The tooling for machining the molecular pump mandrel of claim 7, wherein: the base (100) is connected with a third bolt (340) in a threaded mode, and the base (100) is provided with a positioning hole (330) for being connected with the third bolt (340) in a threaded mode.