CN210549935U - Indexing mechanism and machine tool - Google Patents
Indexing mechanism and machine tool Download PDFInfo
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- CN210549935U CN210549935U CN201921469207.8U CN201921469207U CN210549935U CN 210549935 U CN210549935 U CN 210549935U CN 201921469207 U CN201921469207 U CN 201921469207U CN 210549935 U CN210549935 U CN 210549935U
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Abstract
The utility model belongs to the technical field of machining equipment technique and specifically relates to an indexing mechanism and lathe is related to. The indexing mechanism comprises a sliding saddle, a driving system, a rotating component and an eccentric shaft; the driving system comprises a sliding seat and a driving device, the sliding seat is connected to the sliding saddle in a sliding mode, and the driving device can drive and accurately control the displacement of the sliding seat moving on the sliding saddle; one end of the rotating component is rotatably connected with the sliding saddle and can rotate around the rotating axis; the other end of the rotating component is connected with the sliding seat through an eccentric shaft; therefore, the driving device drives and controls the sliding seat to move on the sliding saddle, the rotating mechanism and the machining unit spindle mounted on the rotating mechanism can deflect a preset angle through the transmission of the eccentric shaft, and the deflected machining unit spindle is perpendicular to the surface to be machined, so that sequential machining of workpieces is not needed, and machining efficiency and machining precision are improved.
Description
Technical Field
The utility model belongs to the technical field of machining equipment technique and specifically relates to an indexing mechanism and lathe is related to.
Background
In the numerical control machine tool, a plurality of processing surfaces of a workpiece need to be processed, and when the plurality of processing surfaces of the workpiece are not perpendicular to a main shaft of a processing unit, the workpiece is usually processed in sequence and processed by different devices, but the processing efficiency of the scheme is low, the workpiece needs to be transferred among different devices for a plurality of times, and the processing precision is difficult to guarantee.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an indexing mechanism and lathe to solve to a certain extent among the prior art and add man-hour to a plurality of machined surfaces that have inclination of work piece, the low and inefficiency technical problem of machining precision.
The utility model provides an indexing mechanism, which comprises a saddle, a driving system, a rotating component and an eccentric shaft; the driving system comprises a sliding seat and a driving device; the sliding seat is connected with the sliding saddle in a sliding mode, and the driving device is used for driving the sliding seat to reciprocate relative to the sliding saddle; one end of the rotating member is rotatably connected with the saddle and can rotate around a rotating axis; the other end of the rotating component is connected with the sliding seat through the eccentric shaft, and the axial direction of the eccentric shaft is the same as the extending direction of the rotating axis; the rotating member is rotatably connected with a first shaft end of the eccentric shaft, and the sliding seat is connected with a second shaft end of the eccentric shaft.
Further, the driving system further comprises a lead screw and a lead screw nut; the driving device is connected with one end of the screw rod, and the sliding seat is connected with the screw rod through the screw rod nut; the sliding saddle is provided with a guide rail, and the sliding seat is connected with the guide rail in a sliding manner; when the driving device drives the lead screw to rotate around the axis direction of the lead screw, the lead screw nut reciprocates along the lead screw, so that the sliding seat reciprocates along the guide rail.
Furthermore, a transition plate is arranged between the sliding seat and the guide rail; the transition plate is connected with the guide rail in a sliding mode, and the sliding seat is fixedly arranged on the transition plate.
Furthermore, a clamp is arranged on the guide rail, and one end of the clamp is connected with the transition plate and used for positioning the sliding seat.
Further, the device also comprises a turntable bearing; the outer ring of the turntable bearing is connected with the sliding saddle, and the inner ring of the turntable bearing is connected with the rotating member through a central rotating shaft; the axis of the central rotating shaft is the rotating axis.
Furthermore, an eccentric hole is formed in the first shaft end, and one end of the second shaft end extends into the eccentric hole and is connected with the first shaft end.
Further, the first shaft end and the second shaft end are respectively and rotatably connected with the corresponding rotating component and the corresponding sliding seat through tapered roller bearings.
Further, the lead screw is a ball screw.
Furthermore, the driving device is a servo motor, and an output shaft of the servo motor is connected with one end of the lead screw through a coupler.
The utility model also provides a machine tool, including above-mentioned arbitrary indexing mechanism and processing unit main shaft, processing unit main shaft with the rotating member is connected.
Compared with the prior art, the beneficial effects of the utility model are that:
the indexing mechanism provided by the utility model comprises a saddle, a driving system, a rotating component and an eccentric shaft; the driving system comprises a sliding seat and a driving device, the sliding seat is connected to the sliding saddle in a sliding mode, the sliding seat can slide along the first direction in a reciprocating mode, the driving device is fixedly installed at one end, along the first direction, of the sliding saddle, the movable end of the driving device is connected with the sliding seat and used for providing driving force for the sliding seat, and the displacement of the sliding seat moving on the sliding saddle can be accurately controlled.
The main shaft of the processing unit is connected with the saddle and the driving system through a rotating component, and one end of the rotating component along the second direction is rotatably connected with the saddle, so that the rotating component can rotate around a rotating axis at the rotating connection position; the extending direction of the rotating axis is a third direction, and the first direction, the second direction and the third direction are mutually vertical; the other end of the rotating component along the second direction is connected with the sliding seat, an eccentric shaft extending along the third direction in the axis direction is arranged between the sliding seat and the rotating component, the first shaft end of the eccentric shaft is rotatably connected with the rotating component, and the second shaft end of the eccentric shaft is connected with the sliding seat. Therefore, when the driving device drives the slide block to move along the first direction, the rotating component can rotate for a certain angle around the rotating axis through the transmission of the eccentric shaft, and the main shaft of the processing unit is driven to deflect for a certain angle; therefore, the driving device can accurately control the displacement of the sliding block moving along the first direction, the deflection angle of the main shaft of the processing unit can be accurately controlled, the deflected main shaft of the processing unit is perpendicular to the surface to be processed, and therefore when a plurality of processing surfaces of a workpiece are processed, the workpiece does not need to be processed in sequence, and the processing efficiency and the processing precision are improved.
The utility model also provides a machine tool, including the processing unit main shaft with indexing mechanism, indexing mechanism can be according to the contained angle between work piece machined surface and the second direction, the drive processing unit main shaft certain angle that deflects to its deflection angle of accurate control to with treat machined surface mutually perpendicular. The machine tool comprises an indexing mechanism and thus the machine tool also has the beneficial effect of an indexing mechanism.
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 embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an indexing mechanism according to an embodiment of the present invention at a first viewing angle;
fig. 2 is a schematic structural diagram of a driving system of an indexing mechanism according to an embodiment of the present invention;
fig. 3 is a schematic cross-sectional view of an indexing mechanism according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of an indexing mechanism provided in an initial state according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of an indexing mechanism provided in an embodiment of the present invention in another state;
fig. 6 is a schematic structural diagram of an indexing mechanism according to another state provided in the embodiment of the present invention.
Reference numerals:
1-saddle, 11-guide, 12-transition plate, 13-clamp, 2-drive system, 21-slide, 22-drive, 23-lead screw, 24-lead screw nut, 3-rotating member, 31-turntable bearing, 32-rotation axis, 4-eccentric shaft, 41-first shaft end, 42-second shaft end, 5-machining unit spindle, a-first direction, b-second direction, c-third direction.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention.
The components of the embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention.
Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
An indexing mechanism and a machine tool according to some embodiments of the present application are described below with reference to fig. 1 to 6.
The application provides an indexing mechanism, as shown in fig. 1 to 3, comprising a saddle 1, a driving system 2, a rotating component 3 and an eccentric shaft 4; the drive system 2 comprises a slide 21 and a drive 22; the sliding seat 21 is connected with the sliding saddle 1 in a sliding way, and the driving device 22 is used for driving the sliding seat 21 to reciprocate relative to the sliding saddle 1; one end of the swivel member 3 is rotatably connected to the saddle 1 and is rotatable about a swivel axis 32; the other end of the rotating member 3 is connected to the slide carriage 21 through an eccentric shaft 4, the axial direction of the eccentric shaft 4 being the same as the extending direction of the rotation axis 32; the rotary member 3 is rotatably connected to a first shaft end 41 of the eccentric shaft 4 and the slide 21 is connected to a second shaft end 42 of the eccentric shaft 4.
The indexing mechanism provided by the application comprises a saddle 1, a driving system 2, a rotating component 3 and an eccentric shaft 4; the driving system 2 includes a sliding base 21 and a driving device 22, the sliding base 21 is slidably connected to the saddle 1 to enable the sliding base 21 to slide reciprocally along the first direction a, the driving device 22 is fixedly installed at one end of the saddle 1 along the first direction a, and a movable end of the driving device 22 is connected to the sliding base 21 to provide a driving force to the sliding base 21 and to enable precise control of displacement of the sliding base 21 on the saddle 1.
The machining unit spindle 5 is connected with the saddle 1 and the driving system 2 through a rotating member 3, one end of the rotating member 3 in the second direction b is rotatably connected with the saddle 1, and the rotating member 3 can rotate around a rotating axis 32 at the rotating connection; the extending direction of the rotation axis 32 is a third direction c, and the first direction a, the second direction b and the third direction c are mutually perpendicular; the other end of the rotating member 3 in the second direction b is connected to the slide base 21, an eccentric shaft 4 extending in the third direction c in the axial direction is arranged between the slide base 21 and the rotating member 3, and a first shaft end 41 of the eccentric shaft 4 is rotatably connected to the rotating member 3 and a second shaft end 42 of the eccentric shaft 4 is connected to the slide base 21.
Therefore, when the driving device 22 drives the slide block to move along the first direction a, the rotation member 3 can rotate a certain angle around the rotation axis 32 through the transmission of the eccentric shaft 4, and the processing unit main shaft 5 is driven to deflect a certain angle; thus, by precisely controlling the displacement of the slider moving in the first direction a by the driving device 22, the angle at which the processing unit is deflected can be precisely controlled.
When the machining unit is used specifically, as shown in fig. 4 to 6, a workpiece is placed on a machine tool fixture, then, according to an included angle between each machining surface to be machined by the workpiece and the second direction b, namely, an included angle between the axis extending directions of the machining unit spindle 5 is driven by the driving device 22, displacement of the slider moving along the first direction a is accurately controlled, and a deflection angle of the machining unit spindle 5 is accurately controlled, so that the deflected machining unit spindle 5 is perpendicular to a surface to be machined, and therefore when multiple machining surfaces of the workpiece are machined, sequential machining of the workpiece is not needed, and machining efficiency and machining precision are improved.
In one embodiment of the present application, preferably, as shown in fig. 2, the drive system 2 further comprises a lead screw 23 and a lead screw nut 24; the driving device 22 is connected with one end of a screw 23, and the sliding seat 21 is connected with the screw 23 through a screw nut 24; the sliding saddle 1 is provided with a guide rail 11, and the sliding seat 21 is connected with the guide rail 11 in a sliding way; when the driving device 22 drives the lead screw 23 to rotate around its axis direction, the lead screw nut 24 reciprocates along the lead screw 23, so that the carriage 21 reciprocates along the guide rail 11.
In this embodiment, the drive system 2 further comprises a lead screw 23 and a lead screw nut 24; the saddle 1 is provided with a guide rail 11 extending along a first direction a, and the sliding seat 21 is arranged on the guide rail 11 so that the sliding seat 21 can reciprocate along the first direction a relative to the saddle 1 on the guide rail 11; bearing seats are respectively arranged at two ends of the sliding saddle 1 in the length direction of the guide rail 11, the lead screw 23 is arranged along the first direction a, and two ends of the lead screw 23 are respectively connected with the bearing seats through bearings, so that the lead screw 23 can rotate around the axis direction of the lead screw; the output end of the driving device 22 is connected with the lead screw 23 through a coupler so as to drive the lead screw 23 to rotate; the lead screw nut 24 is sleeved on the lead screw 23, and the slide base 21 is connected with the lead screw 23 through the lead screw nut 24. When the driving device 22 drives the lead screw 23 to rotate around its own axis, the lead screw nut 24 can reciprocate along the length direction of the lead screw 23, i.e. the first direction a, and further drive the slide carriage 21 connected with the lead screw to reciprocate along the first direction a.
It should be noted that, two ends of the lead screw 23 are installed in the corresponding bearing seats through angular contact ball bearings, and the angular contact ball bearings have high axial bearing capacity, so that the lead screw 23 rotates more smoothly, and thus the rotation angle of the lead screw 23 and the displacement of the slider moving along the first direction a can be controlled more accurately, and further the rotation angle of the rotating member 3 and the machining unit spindle 5 is controlled accurately.
In one embodiment of the present application, preferably, as shown in fig. 2 and 3, a transition plate 12 is provided between the carriage 21 and the guide rail 11; the transition plate 12 is connected with the guide rail 11 in a sliding way, and the sliding seat 21 is fixedly arranged on the transition plate 12.
In the embodiment, a transition plate 12 is further arranged between the sliding seat 21 and the guide rail 11, and the sliding seat 21 is connected with a sliding block on the guide rail 11 through the transition plate 12; the transition plate 12 is connected with a plurality of sliding blocks distributed on the guide rail 11, so that the transition plate 12 can be stably arranged on the guide rail 11, and a stable support is provided for the sliding base 21 fixedly arranged on the transition plate 12; therefore, under the driving of the driving device 22, the sliding seat 21 can slide smoothly along the length direction of the guide rail 11, and the displacement of the movement of the sliding seat 21 and the rotation angle of the rotating member 3 can be accurately controlled, so that the accurate control of the deflection angle of the spindle 5 of the processing unit is realized.
In one embodiment of the present application, preferably, as shown in fig. 1, the clamp 13 is disposed on the guide rail 11, and one end of the clamp 13 is connected to the transition plate 12 for positioning the slide 21.
In this embodiment, a clamp 13 is further disposed on the guide rail 11, and one end of the clamp 13 is connected to the transition plate 12; when the transition plate 12 and the sliding seat 21 move on the guide rail 11, the clamp 13 can slide on the guide rail 11, and when the transition plate 12 and the sliding seat 21 move to a specified position, the transition plate 12 and the sliding seat 21 are locked on the guide rail 11 through the clamp 13, so that the transition plate 12 and the sliding seat 21 can not slide continuously, and further the rotating member 3 can not rotate continuously; therefore, when the main shaft 5 of the processing unit processes a certain processing surface of a workpiece, the main shaft can be ensured not to deflect due to vibration and the like, and the processing precision is ensured.
In one embodiment of the present application, preferably, as shown in fig. 3, further includes a turntable bearing 31; the outer ring of the turntable bearing 31 is connected with the sliding saddle 1, and the inner ring of the turntable bearing 31 is connected with the rotating member 3 through a central rotating shaft; the axis of the central spindle is the axis of rotation 32.
In this embodiment, the rotating member 3 is connected to the saddle 1 through a turntable bearing 31, an outer ring of the turntable bearing 31 is connected to the saddle 1, an inner ring of the turntable bearing 31 is connected to the rotating member 3 through a central rotating shaft, and an axis of the central rotating shaft is the rotating axis 32; by rotatably connecting the rotary member 3 to the saddle 1 using the turntable bearing 31 having high rotation accuracy, the rotation of the rotary member 3 is made smoother, thereby achieving accurate control of the deflection angle of the spindle 5 of the machining unit.
In one embodiment of the present application, preferably, as shown in fig. 3, the first shaft end 41 is provided with an eccentric hole, and one end of the second shaft end 42 extends into the eccentric hole and is connected with the first shaft end 41.
In this embodiment, the eccentric shaft 4 includes a first shaft end 41 and a second shaft end 42, and the axial extension directions of the first shaft end 41 and the second shaft end 42 are the same; an end face of the first shaft end 41 along the axial direction is provided with an eccentric hole penetrating through the first shaft end 41, and one end of the second shaft end 42 extends into the eccentric hole and is fixedly connected with the first shaft end 41 to form an eccentric shaft 4; specifically, the first shaft end 41 and the second shaft end 42 may be connected by welding, or may be connected by a fastener, so as to detachably connect the first shaft end 41 and the second shaft end 42, thereby facilitating repair and replacement of components.
In one embodiment of the present application, preferably, as shown in fig. 3, the first shaft end 41 and the second shaft end 42 are rotatably connected with the corresponding rotating member 3 and the slider 21 through tapered roller bearings, respectively.
In this embodiment, the first shaft end 41 of the eccentric shaft 4 is rotationally connected to the rotary member 3 by means of a tapered roller bearing, and the second shaft end 42 of the eccentric shaft 4 is rotationally connected to the slide 21 by means of a tapered roller bearing; the tapered roller bearing can bear larger axial load and radial load, so that the connection and transmission between the rotating member 3 and the sliding seat 21 are more stable, and the accurate control of the rotating angle of the rotating member 3 and the machining unit spindle 5 is realized.
In one embodiment of the present application, preferably, as shown in fig. 2, the screw 23 is a ball screw 23.
In this embodiment, the screw 23 is a ball screw 23 with high transmission efficiency and high precision, so that under the driving of the driving device 22, the screw nut 24 can drive the sliding base 21 to smoothly slide along the length direction of the guide rail 11, and further, the movement distance of the sliding base 21 and the rotation angle of the rotating member 3 are accurately controlled, and the accurate control of the deflection angle of the spindle 5 of the processing unit is realized.
In one embodiment of the present application, preferably, as shown in fig. 1, the driving device 22 is a servo motor, and an output shaft of the servo motor is connected with one end of a lead screw 23 through a coupling.
In this embodiment, the driving device 22 employs a servo motor with high control accuracy and good stability, and the rotation angle of the lead screw 23 can be precisely controlled by the servo motor, so that the lead screw nut 24 can stably drive the sliding base 21 to slide on the guide rail 11, and the sliding distance of the sliding can be precisely controlled, thereby realizing precise control of the deflection angles of the rotating member 3 and the machining unit spindle 5.
The present application also provides a machine tool comprising the indexing mechanism of any one of the above embodiments and a machining unit spindle 5, the machining unit spindle 5 being connected to the rotating member 3.
In this embodiment, the machine tool includes a machining unit spindle 5 and an indexing mechanism, the machining unit spindle 5 is connected to the rotating member 3 of the indexing mechanism, and the axial direction of the machining unit spindle 5 extends in the second direction b, so that the indexing mechanism can drive the machining unit spindle 5 to deflect at a certain angle according to the included angle between the machined surface of the workpiece and the second direction b, and precisely control the deflection angle to be perpendicular to the surface to be machined. The machine tool comprises the indexing mechanism, so the machine tool has all the beneficial effects of the indexing mechanism, and the detailed description is omitted.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (10)
1. An indexing mechanism is characterized by comprising a saddle, a driving system, a rotating component and an eccentric shaft;
the driving system comprises a sliding seat and a driving device; the sliding seat is connected with the sliding saddle in a sliding mode, and the driving device is used for driving the sliding seat to reciprocate relative to the sliding saddle;
one end of the rotating member is rotatably connected with the saddle and can rotate around a rotating axis; the other end of the rotating component is connected with the sliding seat through the eccentric shaft, and the axial direction of the eccentric shaft is the same as the extending direction of the rotating axis;
the rotating member is rotatably connected with a first shaft end of the eccentric shaft, and the sliding seat is connected with a second shaft end of the eccentric shaft.
2. The indexing mechanism of claim 1, wherein the drive system further comprises a lead screw and a lead screw nut;
the driving device is connected with one end of the screw rod, and the sliding seat is connected with the screw rod through the screw rod nut;
the sliding saddle is provided with a guide rail, and the sliding seat is connected with the guide rail in a sliding manner;
when the driving device drives the lead screw to rotate around the axis direction of the lead screw, the lead screw nut reciprocates along the lead screw, so that the sliding seat reciprocates along the guide rail.
3. The indexing mechanism of claim 2, wherein a transition plate is provided between the carriage and the guide rail;
the transition plate is connected with the guide rail in a sliding mode, and the sliding seat is fixedly arranged on the transition plate.
4. The indexing mechanism according to claim 3, wherein a clamp is provided on the guide rail, and one end of the clamp is connected to the transition plate for positioning the slide.
5. The indexing mechanism of claim 1, further comprising a turntable bearing;
the outer ring of the turntable bearing is connected with the sliding saddle, and the inner ring of the turntable bearing is connected with the rotating member through a central rotating shaft; the axis of the central rotating shaft is the rotating axis.
6. The indexing mechanism according to claim 2, wherein the first shaft end has an eccentric hole formed therein, and one end of the second shaft end extends into the eccentric hole and is connected to the first shaft end.
7. The indexing mechanism of claim 6, wherein the first and second shaft ends are rotatably connected to the respective rotating member and the slide by tapered roller bearings.
8. The indexing mechanism of claim 2, wherein the screw is a ball screw.
9. The indexing mechanism according to claim 2, wherein the driving means is a servo motor, and an output shaft of the servo motor is connected to one end of the lead screw through a coupling.
10. A machine tool comprising a machining unit spindle and an indexing mechanism as claimed in any one of claims 1 to 9; the machining unit spindle is connected with the rotating member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921469207.8U CN210549935U (en) | 2019-09-05 | 2019-09-05 | Indexing mechanism and machine tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921469207.8U CN210549935U (en) | 2019-09-05 | 2019-09-05 | Indexing mechanism and machine tool |
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| CN210549935U true CN210549935U (en) | 2020-05-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921469207.8U Active CN210549935U (en) | 2019-09-05 | 2019-09-05 | Indexing mechanism and machine tool |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110421407A (en) * | 2019-09-05 | 2019-11-08 | 沈阳机床成套设备有限责任公司 | Indexing mechanism and lathe |
| CN112719939A (en) * | 2020-12-24 | 2021-04-30 | 枣庄北航机床创新研究院有限公司 | Slider swing link type precise numerical control rotary table |
-
2019
- 2019-09-05 CN CN201921469207.8U patent/CN210549935U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110421407A (en) * | 2019-09-05 | 2019-11-08 | 沈阳机床成套设备有限责任公司 | Indexing mechanism and lathe |
| CN112719939A (en) * | 2020-12-24 | 2021-04-30 | 枣庄北航机床创新研究院有限公司 | Slider swing link type precise numerical control rotary table |
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