CN212265156U

CN212265156U - Multi-station numerical control rotary table

Info

Publication number: CN212265156U
Application number: CN202020393601.4U
Authority: CN
Inventors: 王红明
Original assignee: Jiaxing Tianhe Machinery Co ltd
Current assignee: Jiaxing Tianhe Machinery Co ltd
Priority date: 2020-03-25
Filing date: 2020-03-25
Publication date: 2021-01-01
Anticipated expiration: 2030-03-25

Abstract

The utility model discloses a multi-station numerical control turntable, which comprises a motor and a turntable station, wherein the turntable station comprises a turntable box body, a worm wheel, a double-lead worm and a top cover, the double-lead worm is meshed with the worm wheel and connected, the top of the turntable box body is provided with a fixed worm fixing seat and a movable worm moving seat, a first through hole is arranged in the worm fixing seat, a second through hole is arranged in the worm moving seat, the double-lead worm comprises a spiral section, a moving section and a sliding section, the spiral section is arranged at the center of the double-lead worm, the moving section is arranged at one side of the spiral section, the sliding section is arranged at the other side of the spiral section, the sliding section passes through the first through hole and is connected with the worm fixing seat in a circumferential direction in a sliding manner and is connected with the worm moving seat in an axial direction in a sliding manner, the moving section passes through the second, the utility model discloses can two lead journey worm gear backlash of quick adjustment.

Description

Multi-station numerical control rotary table

Technical Field

The utility model relates to a machine tool parts technical field, more specifically the utility model relates to a multistation numerical control revolving stage that says so.

Background

With the continuous progress of the technology in the field of numerical control machine tools, the numerical control turntable, an important component of the numerical control machine tool, is developing towards higher precision and better precision retentivity. In order to achieve the performance, the double-lead worm-and-gear pair is widely applied to the field, and the clearance compensation characteristic of the structure enables the precision and the precision retentivity of the numerical control machine tool to be improved to a new height. However, because the structure is pure sliding friction, after the numerical control rotary table is used for a period of time, the meshing clearance of the worm gear and worm pair is inevitably increased due to abrasion, so that the precision of the numerical control rotary table is seriously influenced, and the whole machine tool is stopped and overhauled.

At present, the numerical control turntable manufacturer designs a complex structure and is complex to adjust. At present, the clearance compensation adjustment of two lead worm gear worm pairs is all adjusted by manufacturer's professional technical personnel, adopts the worm shafting to dismantle the back, measures each part size, then takes off adjusting shim, assembles again after the grinding machine grinding, wastes time and energy, and often causes the production delay. Therefore, how to quickly compensate the meshing clearance of the worm and gear pair becomes a difficult problem in front of a plurality of users.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art, the utility model provides a can two lead journey worm gear backlash's multistation numerical control revolving stage of quick adjustment.

In order to achieve the above purpose, the utility model provides a following technical scheme:

the utility model provides a multistation numerical control revolving stage, includes motor and revolving stage station, the revolving stage station includes revolving stage box, worm wheel, two lead stroke worms and top cap, two lead stroke worms and worm wheel meshing are connected, the top of revolving stage box is provided with fixed worm fixing base and mobilizable worm and removes the seat, be provided with first through-hole in the worm fixing base, the worm removes and is provided with the second through-hole in the seat, two lead stroke worms include spiral section, removal section and sliding section, the spiral section is at the center of two lead stroke worms, and the removal section is in one side of spiral section, and the sliding section is at the opposite side of spiral section, the sliding section passes first through-hole and worm fixing base in circumference swing joint and at axial upper swing joint, the removal section passes second through-hole and worm and removes the seat in circumference swing joint and at axial upper fixed connection.

Further set up first antifriction bearing between worm fixing base and the sliding section, the sliding section passes first antifriction bearing and sliding connection on the axial, be provided with second antifriction bearing between worm removal seat and the moving section.

And furthermore, a positioning shaft shoulder is arranged on one side, close to the spiral section, of the moving section, and a locking nut is arranged on one side, far away from the spiral section, of the moving section.

Furthermore, a first thrust needle roller bearing is arranged between the locking nut and the worm moving seat, and a second thrust needle roller bearing is arranged between the positioning shaft shoulder and the worm moving seat.

Further one side of the moving section, which is far away from the spiral section, is provided with a thread section, the locking nut is arranged on the thread section, and the locking nut is in threaded connection with the thread section.

Further the top of worm removes the seat is provided with waist type groove, be provided with the screw in the waist type groove, revolving stage box top is provided with the screw hole, the screw sets up in the screw hole.

And furthermore, the number of the rotary table stations is at least 2, a coupler is arranged between every two adjacent rotary table stations, and the double-lead worm of each adjacent rotary table station is connected with the power transmission through the coupler.

Compared with the prior art, the beneficial effects of the utility model are that: set up two lead worms in worm fixing base and worm remove the seat, two lead worms remove the seat for the worm and go up fixed connection in axial direction, when adjusting the meshing clearance of two helical pitch worm gears, remove the seat through removing the worm, drive two helical pitch worms and remove at axial, realize the meshing clearance of quick adjustment two lead worm gears, and the utility model relates to a multistation numerical control revolving stage, adjacent revolving stage station passes through the shaft coupling and links in succession, and the regulation of every revolving stage station all is independent regulation, can adjust the meshing clearance according to the actual conditions of every revolving stage station, and the meshing clearance of adjusting single revolving stage station does not influence the meshing clearance of other revolving stage stations.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments are briefly introduced below, and 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 without inventive work, wherein:

fig. 1 is a top view of a multi-station numerical control turntable according to the present invention;

fig. 2 is a top view (with a top cover removed) of the multi-station numerical control turntable according to the present invention;

3 FIG. 3 3 3 is 3 a 3 cross 3- 3 sectional 3 view 3 A 3- 3 A 3 of 3 FIG. 3 1 3; 3

FIG. 4 is a partial enlarged view B of FIG. 2;

FIG. 5 is a partial enlarged view C of FIG. 3;

FIG. 6 is a partial enlarged view D of FIG. 3;

FIG. 7 is an enlarged view E of a portion of FIG. 3;

fig. 8 is a three-dimensional structure view of the worm moving seat of the present invention;

fig. 9 is a three-dimensional structure view (with the top cover removed) of the multi-station numerical control turntable according to the present invention.

Labeled as: 1. a motor; 2. a turntable station; 21. a double lead worm; 211. a helical section; 212. a sliding section; 213. a moving section; 214. positioning the shaft shoulder; 215. a threaded segment; 22. a worm gear; 25. a worm fixing seat; 26. a worm moving seat; 261. a second through hole; 262. a waist-shaped groove; 263. a screw; 27. a turntable box body; 28. a coupling; 29. locking the nut; 3. a top cover; 41. a first rolling bearing; 42. a second rolling bearing; 43. a second thrust needle bearing; 44. a first thrust needle bearing.

Detailed Description

In the description of the present invention, it should be noted that, for the orientation words, such as the terms "center", "lateral (X)", "longitudinal (Y)", "vertical (Z)", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., the orientation and the positional relationship are indicated based on the orientation or the positional relationship shown in the drawings, and the description is only for convenience of describing the present invention and simplifying the description, but not for indicating or implying that the device or the element referred to must have a specific orientation, be constructed and operated in a specific orientation, and should not be construed as limiting the specific protection scope of the present invention.

Furthermore, if the terms "first" and "second" are used for descriptive purposes only, they are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features. Thus, the definition of "a first" or "a second" feature may explicitly or implicitly include one or more of the features, and "a plurality" or "a plurality" in the description of the invention means two or more unless a specific definition is explicitly provided.

The double-lead worm is characterized in that the tooth thickness of the worm is uniformly gradually thickened or thinned from one end to the other end, the clearance of the worm gear is enlarged when the double-lead worm is used, the method of axially moving the worm is used for eliminating or adjusting the meshing clearance, and the clearance of the worm gear can be adjusted to achieve the best state.

The multi-station numerical control turntable of the present invention is explained with reference to fig. 1 to 9.

A multi-station numerical control turntable comprises a motor 1 and a turntable station 2, wherein the turntable station 2 comprises a turntable box body 27, a worm wheel 22, a double-lead worm 21 and a top cover 3, the double-lead worm 21 is meshed and connected with the worm wheel 22, the top of the turntable box body 27 is provided with a fixed worm fixing seat 25 and a movable worm moving seat 26, a first through hole is arranged in the worm fixing seat 25, a second through hole 261 is arranged in the worm moving seat 26, the double-lead worm 21 includes a spiral section 211, a moving section 213 and a sliding section 212, the spiral section 211 is at the center of the double lead screw 21, the moving section 213 is at one side of the spiral section 211, the sliding section 212 is at the other side of the spiral section 211, the sliding section 212 is connected to the worm holder 25 in a circumferential direction and in an axial direction in a sliding manner through the first through hole, the displacement portion 213 is connected to the worm displacement seat 26 in a rotationally fixed manner in the circumferential direction and in a fixed manner in the axial direction, through the second through opening 261.

When the meshing clearance of the worm of the double-lead worm gear 22 is adjusted, the multi-station numerical control rotary table is stopped, then the top cover 3 is opened, the worm moving seat 26 at the top of the rotary table box body 27 is moved, the double-lead worm 21 is driven to move in the axial direction, and the meshing clearance of the worm of the double-lead worm gear 22 is adjusted rapidly.

Preferably, a first rolling bearing 41 is arranged between the worm fixing seat 25 and the sliding section 212, the sliding section 212 passes through the first rolling bearing 41 and is connected in a sliding manner in the axial direction, the first rolling bearing 41 enables the sliding section 212 to rotate in the circumferential direction relative to the worm fixing seat 25, the sliding section 212 is in non-interference fit with the first rolling bearing 41, the sliding section 212 can slide in the first rolling bearing 41, a second rolling bearing 42 is arranged between the worm moving seat 26 and the moving section 213, and the second rolling bearing 42 enables the moving section 213 to rotate in the circumferential direction relative to the worm fixing seat 25.

Preferably, as shown in fig. 7, a side of the moving section 213 close to the spiral section 211 is provided with a positioning shoulder 214, a side of the moving section 213 far from the spiral section 211 is provided with a lock nut 29, and the positioning shoulder 214 and the lock nut 29 cooperate to fix the moving section 213 in the axial direction relative to the worm moving seat 26.

Preferably, a first thrust needle bearing 44 is arranged between the lock nut 29 and the worm moving seat 26, and a second thrust needle bearing 43 is arranged between the positioning shoulder 214 and the worm moving seat 26, as shown in fig. 7, one side end surface of the first thrust needle bearing 44 is in contact with the end surface of the lock nut 29, the other side end surface of the first thrust needle bearing 44 is in contact with the end surface of the worm moving seat 26, and the first thrust needle bearing 44 enables the lock nut 29 not to influence the circumferential rotation of the moving segment 213 while limiting the axial movement of the moving segment 213; one end face of the second thrust needle bearing 43 contacts with the end face of the positioning shoulder 214, the other end face of the second thrust needle bearing 43 contacts with the end face of the worm moving seat 26, and the second thrust needle bearing 43 enables the positioning shoulder 214 to limit the axial movement of the moving segment 213 and simultaneously does not affect the circumferential rotation of the moving segment 213.

Preferably, as shown in fig. 7, a threaded section 215 is provided on a side of the moving section 213 away from the spiral section 211, the locking nut 29 is provided on the threaded section 215, the locking nut 29 is in threaded connection with the threaded section 215, the locking nut 29 can have self-locking property after locking the moving section 213 through the threaded connection, and the threaded connection is a detachable connection, so that the moving section 213 and the worm moving seat 26 can be separated.

Preferably, the top of the worm moving seat 26 is provided with a waist-shaped groove 262, the waist-shaped groove 262 is provided with a screw 263, as shown in fig. 8, the top of the turntable case 27 is provided with a threaded hole, the screw 263 is arranged in the threaded hole, the worm moving seat 26 can be fixed on the turntable case 27 by tightening the screw 263, the screw 263 is loosened when the worm moving seat 26 needs to be moved, the waist-shaped groove 262 moves relative to the screw 263 when the worm moving seat 26 moves, and the screw 263 limits the worm moving seat 26 to move only axially in the waist-shaped groove 262, and the maximum moving distance is the total length of the waist-shaped groove 262.

Preferably, 2 at least turntable stations 2 are arranged, a coupler 28 is arranged between every two adjacent turntable stations 2, the double-lead worm 21 of each adjacent turntable station 2 is connected with the power transmission through the coupler 28, when the meshing gap of the double-lead worm gear 22 of one turntable station 2 is adjusted, the meshing gap of the turntable station 2 can be independently adjusted by loosening the connected coupler 28, the coupler 28 can transmit power when the worm rotates, and the coupler 28 can enable each turntable station 2 to be relatively independent and not to be influenced by each other when the meshing gap is adjusted.

It is above only the utility model discloses a preferred embodiment, the utility model discloses a scope of protection does not only confine above-mentioned embodiment, the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides a multistation numerical control revolving stage, includes motor and revolving stage station, the revolving stage station includes revolving stage box, worm wheel, two lead worm and top cap, two lead worm and worm wheel meshing are connected its characterized in that: the top of revolving stage box is provided with fixed worm fixing base and mobilizable worm and removes the seat, be provided with first through-hole in the worm fixing base, be provided with the second through-hole in the worm removes the seat, two lead the journey worm includes spiral section, removal section and sliding section, the spiral section is at the center of two lead the journey worms, and the removal section is in one side of spiral section, and the sliding section is at the opposite side of spiral section, the sliding section passes first through-hole and worm fixing base in circumference swivelling joint and at axial upper sliding connection, the removal section passes the second through-hole and moves the seat with the worm and swivelling joint and at axial upper fixed connection in circumference.

2. The multi-station numerical control turntable according to claim 1, wherein: set up first antifriction bearing between worm fixing base and the slip section, the slip section passes first antifriction bearing and sliding connection on the axial, be provided with second antifriction bearing between worm removal seat and the removal section.

3. The multi-station numerical control turntable according to claim 2, wherein: one side of the moving section, which is close to the spiral section, is provided with a positioning shaft shoulder, and one side of the moving section, which is far away from the spiral section, is provided with a locking nut.

4. The multi-station numerical control turntable according to claim 3, wherein: a first thrust needle roller bearing is arranged between the locking nut and the worm moving seat, and a second thrust needle roller bearing is arranged between the positioning shaft shoulder and the worm moving seat.

5. The multi-station numerical control turntable according to claim 4, wherein: one side of the moving section, which is far away from the spiral section, is provided with a thread section, the locking nut is arranged on the thread section, and the locking nut is in threaded connection with the thread section.

6. The multi-station numerical control turntable according to claim 5, wherein: the top of the worm moving seat is provided with a waist-shaped groove, a screw is arranged in the waist-shaped groove, the top of the rotary table box body is provided with a threaded hole, and the screw is arranged in the threaded hole.

7. The multi-station numerical control turntable according to claim 6, wherein: the rotary table is characterized in that at least 2 rotary table stations are arranged, a coupler is arranged between every two adjacent rotary table stations, and the double-lead worm of each adjacent rotary table station is connected with the coupler to transmit power.