CN220806285U - Compact AC axis cradle numerical control turntable - Google Patents

Abstract

The utility model is suitable for the field of numerical control machine tools, and provides a compact type AC (alternating current) shaft cradle numerical control turntable, which comprises a U-shaped bridge plate assembly, wherein the U-shaped bridge plate assembly is respectively provided with a first A-shaft rotary driving device and a second A-shaft rotary driving device, a C-shaft torque motor is arranged in the middle of the U-shaped bridge plate assembly, an output shaft of the C-shaft torque motor is fixedly connected with a fixture clamp for fixing a workpiece, the bottom of the fixture clamp is provided with a circular clamp limiting strip, the bridge plate assembly is provided with a plurality of limiting assemblies which are matched with the fixture limiting strip, the limiting assemblies clamp the fixture limiting strip through a first limiting clamping plate and a second limiting clamping plate so as to limit the fixture clamping strip in the C-shaft rotary direction, and the C-shaft driving torque motor can enable the structure to be compact, so that the load capacity of the fixture clamp can be improved.

Description

Compact AC axis cradle numerical control turntable

Technical Field

The utility model is suitable for the field of numerical control machine tool equipment, and provides a compact type AC axis cradle numerical control turntable.

Background

The numerical control machining center is an automatic machine tool device composed of a large number of mechanical devices and a numerical control system, is generally used for machining complex parts, is an indispensable auxiliary manufacturing device in modern manufacturing industry, and can be generally divided into a three-axis machining center, a four-axis machining center or a five-axis machining center according to the machining angle of a machine tool, wherein the machining applicability of the five-axis machining center is strongest, three axes of the five-axis machining center are X, Y, Z axes controlled by a servo linear motor to move axially, the remaining two axes are an A axis rotating around an X axis and a C axis rotating around a Z axis, in a common machine tool design, the rotation of the A axis and the C axis is generally realized through a numerical control turntable, in a common design, the rotation of the C axis is generally driven by a motor, however, the structure can lead to a large size of a driving device, so that a motor with large output cannot be selected, the load of the numerical control turntable cannot be limited, a product with high weight cannot be machined, and meanwhile, the traditional numerical control limiting device can not guarantee that the accurate machining position of a workpiece can not be maintained in the whole course in machining process.

Disclosure of utility model

Therefore, the utility model provides the compact type AC-axis cradle numerical control turntable, the C-axis rotation is realized by directly driving the fixture to rotate through the C-axis torque motor, so that the structure of the C-axis driving device is more compact, and meanwhile, the C-axis driving device is provided with a plurality of limiting assemblies, so that the fixture can be clamped in an auxiliary manner when the C-axis position is fixed, and the stability of the fixture during processing is enhanced.

In order to achieve the above object, the present utility model provides the following technical solutions: the utility model provides a compact AC axle cradle numerical control revolving stage, including the bridge plate subassembly, bridge plate subassembly both sides are provided with first A axle rotary drive device and second A axle rotary drive device respectively, aforementioned first A axle rotary drive device includes first A axle rotating seat, be provided with first A axle rotating electrical machines and first A axle rotary reducer on the first A axle rotating seat, wherein, first A axle rotating electrical machines is connected with first A axle rotary reducer drive, the output shaft of first A axle rotary reducer is connected with bridge plate subassembly side fixed, aforementioned second A axle rotary drive device includes second A axle rotating seat, be provided with second A axle rotating electrical machines and second A axle rotary reducer on the second A axle rotating seat, wherein, second A axle rotating electrical machines is connected with second A axle rotary reducer drive, the output shaft of second A axle rotary reducer is connected with bridge plate subassembly side fixed; the axle board assembly middle position is provided with C axle torque motor, the output shaft fixedly connected with frock clamp of aforementioned C axle torque motor, the aforesaid frock clamp bottom is provided with the spacing strip of anchor clamps of ring shape towards axle board assembly one side, the aforesaid axle board assembly is provided with several spacing subassembly, the aforesaid spacing subassembly includes splint track and splint driving motor, the output shaft fixedly connected with splint driving screw of aforesaid splint driving motor, be provided with first screw thread section and second screw thread section on the aforesaid splint driving screw, the screw thread rotation direction of aforesaid first screw thread section and second screw thread section is opposite, the slip cap is equipped with first spacing splint and the spacing splint of second on the splint track, aforesaid first spacing splint is provided with the first screw hole with first screw thread section looks adaptation, aforesaid second spacing splint are provided with the second screw hole with the spacing strip of second screw thread adaptation of anchor clamps, aforesaid first spacing splint and second spacing splint set up respectively in the inside and outside both sides of the spacing strip of anchor clamps.

Further, the first A-axis rotating speed reducer and the second A-axis rotating speed reducer are RV speed reducers, the first A-axis rotating speed reducer and the second A-axis rotating speed reducer are provided with encoders, and the C-axis torque motor is provided with an encoder.

Further, the limit assemblies are four, and two limit assemblies are respectively arranged on two sides of the C-axis torque motor.

Further, both sides face all is provided with grid type anti-skidding groove inside and outside of the spacing of anchor clamps, first spacing splint and second spacing splint all are provided with rubber slipmat towards spacing one side of anchor clamps.

Further, the bridge plate assembly is U-shaped, a first driving connecting plate and a second driving connecting plate are respectively arranged at two sides of the bridge plate assembly, the first driving connecting plate is fixedly connected with an output shaft of the first A-axis rotating speed reducer, and the second driving connecting plate is fixedly connected with an output shaft of the second A-axis rotating speed reducer.

Compared with the prior art, the utility model has the beneficial effects that:

1. In the scheme of the utility model, the structure that the torque motor is directly connected with the tool clamp is adopted, and the positioning error generated by a mechanical structure is reduced by adopting a direct connection mode, so that the process precision is ensured, a speed reducer and a transmission mechanism are not provided, so that the structure in the bridge plate assembly is more compact, the loading capacity of the tool clamp can be improved, and meanwhile, the torque motor is provided with a high-resolution encoder, so that the product can reach one grade higher precision than the common servo, and the applicability of the numerical control turntable is wider;

2. When the fixture stops rotating along the C axis, the fixture limiting strips of the fixture are clamped by the limiting assemblies to realize C axis limiting, and more accurate and stable limiting can be provided for the workpiece during processing.

Drawings

FIG. 1 is a schematic view of a compact AC axis cradle numerical control turntable of the type referred to in the present utility model;

FIG. 2 is a schematic view of the internal structure of a compact AC-axis cradle numerical control turntable of FIG. 1;

Fig. 3 is a schematic structural view of a limiting component in the present utility model.

In the figure: 1. bridge plate assembly, 101, first drive connection board, 102, second drive connection board, 2, first A axle rotation driving device, 201, first A axle rotating electrical machines, 202, first A axle rotation reduction gear, 3, second A axle rotation driving device, 301, second A axle rotating electrical machines, 302, second A axle rotation reduction gear, 4, C axle torque motor, 5, frock clamp, 501, clamp limit bar, 6, spacing assembly, 601, splint track, 602, first spacing splint, 603, second spacing splint, 604, splint driving motor.

Detailed Description

The preferred embodiments of the present utility model will be described below with reference to the accompanying drawings, it being understood that the preferred embodiments described herein are for illustration and explanation of the present utility model only, and are not intended to limit the present utility model.

Referring to fig. 1 to 3, the present utility model provides a compact type AC-axis cradle numerical control turntable, which comprises a bridge plate assembly 1, wherein a first a-axis rotation driving device 2 and a second a-axis rotation driving device 3 are respectively arranged at two sides of the bridge plate assembly 1, the first a-axis rotation driving device 2 comprises a first a-axis rotation seat, a first a-axis rotation motor 201 and a first a-axis rotation speed reducer 202 are arranged on the first a-axis rotation seat, the first a-axis rotation motor 201 is in driving connection with the first a-axis rotation speed reducer 202, an output shaft of the first a-axis rotation speed reducer 202 is fixedly connected with a side surface of the bridge plate assembly 1, the second a-axis rotation driving device 3 comprises a second a-axis rotation seat, a second a-axis rotation motor 301 and a second a-axis rotation speed reducer 302 are arranged on the second a-axis rotation seat, an output shaft of the second a-axis rotation speed reducer 302 is in driving connection with the side surface of the bridge plate assembly 1, and the first a-axis rotation motor 201 and the second a-axis rotation speed reducer 301 are controlled by a coaxial control; the intermediate position of the bridge plate component 1 is provided with a C-axis torque motor 4, the output shaft fixedly connected with frock clamp 5 of the aforesaid C-axis torque motor 4, the aforesaid frock clamp 5 bottom is provided with the fixture spacing piece 501 of ring shape towards bridge plate component 1 one side, the aforesaid bridge plate component 1 is provided with four spacing subassemblies 6, the aforesaid spacing subassembly 6 is provided with two spacing subassemblies 6 respectively in C-axis torque motor 4 both sides, the aforesaid spacing subassembly 6 includes splint track 601 and splint driving motor 604, the output shaft fixedly connected with splint driving screw of aforesaid splint driving motor 604, be provided with first screw thread section and second screw thread section on the aforesaid splint driving screw, the screw thread rotation direction of aforesaid first screw thread section and second screw thread section is opposite, the aforesaid first stop clamp 602 and the second stop clamp 603 of second screw thread section are equipped with to the cover on the splint track 601, aforesaid first stop clamp 602 is provided with the first screw hole with first screw thread section looks adaptation, aforesaid second stop clamp 603 is provided with the second screw hole with second screw thread section looks adaptation, just so that driving motor 604 can drive clamp 602 and second clamp and the inside and outside the first clamp 602 can keep away from the limit clamp 602 and the limit clamp shape of limit clamp respectively in that the inside and outside clamp respectively, the two sides of the aforesaid first clamp limit clamp 602 are more stable mutually.

In a further scheme, the first a-axis rotation speed reducer 202 and the second a-axis rotation speed reducer 302 are RV speed reducers, the first a-axis rotation speed reducer 202 and the second a-axis rotation speed reducer 302 are provided with encoders, the C-axis torque motor 4 is provided with an encoder, the RV speed reducer is a transmission machine with compact structure, large transmission ratio and self-locking function, and is very suitable for a working scene of a machine tool, and the volumes of the first a-axis rotation driving device 2 and the second a-axis rotation driving device 3 can be reduced as much as possible.

In a further scheme, the inner side and the outer side of the clamp limiting strip 501 are respectively provided with a grid type anti-skid groove, the first limiting clamping plate 602 and the second limiting clamping plate 603 are respectively provided with a rubber anti-skid pad facing one side of the clamp limiting strip 501, and the clamping limiting between the first limiting clamping plate 602, the second limiting clamping plate 603 and the grid type anti-skid grooves can be more stable through the arrangement.

In a further scheme, the bridge plate assembly 1 is U-shaped, the two sides of the bridge plate assembly are respectively provided with a first driving connection plate 101 and a second driving connection plate 102, the first driving connection plate 101 is fixedly connected with an output shaft of the first a-axis rotation speed reducer 202, the second driving connection plate 102 is fixedly connected with an output shaft of the second a-axis rotation speed reducer 302, the bridge plate assembly 1 is set into a U-shape, the height position of the fixture 5 in the middle of the bridge plate assembly 1 can be reduced as much as possible, and thus the selection allowance of workpieces which can be processed on the height is larger.

The working principle of this embodiment is as follows:

The workpiece to be machined is mounted on the fixture 5, the rotation of the workpiece to be machined in the A-axis direction is achieved through the first A-axis rotating motor 201 and the second A-axis rotating motor 301, the rotation of the workpiece to be machined in the C-axis direction is achieved through the C-axis torque motor 4, when the workpiece to be machined does not need to rotate in the C-axis direction, the first limiting clamping plate 602 and the second limiting clamping plate 603 of the limiting assembly 6 are respectively abutted against the inner side surface and the outer side surface of the circular fixture limiting strip 501, and therefore the limiting assembly 6 can achieve limiting of the fixture 5 through clamping the fixture limiting strip 501, and stability in machining is further improved.

In the description of the present utility model, it should be understood that the azimuth or positional relationships indicated by the azimuth terms such as "front, rear, upper, lower, left, right", "transverse, vertical, horizontal", and "top, bottom", etc., are generally based on the azimuth or positional relationships shown in the drawings, merely to facilitate description of the present utility model and simplify the description, and these azimuth terms do not indicate and imply that the apparatus or elements referred to must have a specific azimuth or be constructed and operated in a specific azimuth, and thus should not be construed as limiting the scope of protection of the present utility model: the orientation word "inner and outer" refers to inner and outer relative to the contour of the respective component itself.

The above description is only of the preferred embodiments of the present utility model, and any person skilled in the art may modify the present utility model or make modifications to the present utility model equivalent thereto using the technical solutions described above. Therefore, any simple modification or equivalent made according to the technical solution of the present utility model falls within the scope of the protection claimed by the present utility model.

Claims (5)

1. The utility model provides a compact AC axle cradle numerical control revolving stage, including the bridge plate subassembly, a serial communication port, the aforesaid bridge plate subassembly both sides are provided with first A axle rotary drive device and second A axle rotary drive device respectively, the aforesaid first A axle rotary drive device includes first A axle rotary seat, be provided with first A axle rotating electrical machines and first A axle rotary reducer on the first A axle rotary seat, wherein, first A axle rotating electrical machines and first A axle rotary reducer drive connection, the output shaft of first A axle rotary reducer and bridge plate subassembly side fixed connection, aforesaid second A axle rotary drive device includes second A axle rotary seat, be provided with second A axle rotating electrical machines and second A axle rotary reducer on the second A axle rotary seat, wherein, second A axle rotating electrical machines and second A axle rotary reducer drive connection, the output shaft of second A axle rotary reducer and bridge plate subassembly side fixed connection; the axle board assembly middle position is provided with C axle torque motor, the output shaft fixedly connected with frock clamp of aforementioned C axle torque motor, the aforesaid frock clamp bottom is provided with the spacing strip of anchor clamps of ring shape towards axle board assembly one side, the aforesaid axle board assembly is provided with several spacing subassembly, the aforesaid spacing subassembly includes splint track and splint driving motor, the output shaft fixedly connected with splint driving screw of aforesaid splint driving motor, be provided with first screw thread section and second screw thread section on the aforesaid splint driving screw, the screw thread rotation direction of aforesaid first screw thread section and second screw thread section is opposite, the slip cap is equipped with first spacing splint and the spacing splint of second on the splint track, aforesaid first spacing splint is provided with the first screw hole with first screw thread section looks adaptation, aforesaid second spacing splint are provided with the second screw hole with the spacing strip of second screw thread adaptation of anchor clamps, aforesaid first spacing splint and second spacing splint set up respectively in the inside and outside both sides of the spacing strip of anchor clamps.

2. The compact AC axis cradle numerical control turntable of claim 1, wherein the first and second a axis rotation reducers are RV reducers, and the first and second a axis rotation reducers are provided with encoders, and the C axis torque motor is provided with an encoder.

3. The compact type AC axis cradle numerical control turntable as set forth in claim 1, wherein the number of the limiting assemblies is four, and two limiting assemblies are respectively arranged at two sides of the C axis torque motor.

4. The compact type AC axis cradle numerical control turntable according to claim 1, wherein the inner side surface and the outer side surface of the clamp limit bar are provided with grid-type anti-slip grooves, and one side of the first limit clamping plate and one side of the second limit clamping plate, which face the clamp limit bar, are provided with rubber anti-slip pads.

5. The compact type AC axis cradle numerical control turntable as set forth in claim 1, wherein the bridge plate assembly is U-shaped, a first driving connection plate and a second driving connection plate are respectively disposed at two sides of the bridge plate assembly, the first driving connection plate is fixedly connected with the output shaft of the first a-axis rotation speed reducer, and the second driving connection plate is fixedly connected with the output shaft of the second a-axis rotation speed reducer.