CN215788431U - Auxiliary guide shaft transmission mechanism of numerical control machine tool - Google Patents
Auxiliary guide shaft transmission mechanism of numerical control machine tool Download PDFInfo
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- CN215788431U CN215788431U CN202122263579.9U CN202122263579U CN215788431U CN 215788431 U CN215788431 U CN 215788431U CN 202122263579 U CN202122263579 U CN 202122263579U CN 215788431 U CN215788431 U CN 215788431U
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- shaft
- transmission shaft
- ball spline
- spline nut
- control machine
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Abstract
The utility model relates to an auxiliary guide shaft transmission mechanism of a numerical control machine tool. The synchronous driving belt wheel comprises a shaft frame, a transmission shaft, a main shaft synchronous driven belt wheel and a rotary guide sleeve synchronous driving belt wheel, wherein the transmission shaft is rotatably arranged on the shaft frame; the auxiliary guide shaft transmission mechanism of the numerical control machine tool also comprises a wheel carrier and a ball spline nut; the transmission shaft is a spline shaft; the ball spline nut is sleeved outside the transmission shaft to form a key connection that the ball spline nut is fixed circumferentially relative to the transmission shaft and slides axially; the wheel carrier is fixedly arranged on the ball spline nut; the main shaft synchronous driven pulley is fixedly arranged on the wheel carrier. According to the utility model, through the matching of the ball spline nut and the spline shaft, under the condition of meeting the requirement of large torque and high precision transmission, the synchronous driven belt wheel of the main shaft can axially slide relative to the transmission shaft, and the scheme is convenient to implement.
Description
Technical Field
The utility model relates to an auxiliary guide shaft transmission mechanism of a numerical control machine tool.
Background
The core-moving numerical control machine tool is mainly used for processing slender shaft workpieces. In order to avoid the slender shaft workpiece from sending deformation in the machining of high-speed rotation, a rotating guide sleeve is generally adopted to support the slender shaft workpiece. In order to avoid friction between the rotary guide sleeve and the slender shaft workpiece, a preset transmission mechanism is required to drive the rotary guide sleeve to rotate, and the rotary guide sleeve can synchronously rotate with a main shaft of the numerical control machine tool. For example, the patent application publication CN 01912978A of china patent application discloses a synchronous rotary guide sleeve seat device for a lathe, which realizes power transmission through a sliding transmission shaft. However, the sliding type propeller shaft lacks a specific embodiment in the implementation process.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide an auxiliary guide shaft transmission mechanism of a numerical control machine tool, which comprises a shaft frame, a transmission shaft, a main shaft synchronous driven belt pulley and a rotary guide sleeve synchronous driving belt pulley, wherein the transmission shaft is rotatably arranged on the shaft frame; the auxiliary guide shaft transmission mechanism of the numerical control machine tool also comprises a wheel carrier and a ball spline nut; the transmission shaft is a spline shaft; the ball spline nut is sleeved outside the transmission shaft to form a key connection that the ball spline nut is fixed circumferentially relative to the transmission shaft and slides axially; the wheel carrier is fixedly arranged on the ball spline nut; the main shaft synchronous driven pulley is fixedly arranged on the wheel carrier.
According to the utility model, the main shaft synchronous driven belt pulley can transmit torque to the transmission shaft by matching the ball spline nut with the spline shaft so as to drive the transmission shaft to rotate, and the main shaft synchronous driven belt pulley can axially slide relative to the transmission shaft so as to be matched with the main shaft synchronous driving belt pulley on the main shaft of the numerical control machine tool.
Drawings
Figures 1 and 2 show perspective views of the utility model from two different angles, respectively;
FIG. 3 shows a front view of the present invention;
FIG. 4 shows an enlarged view of part A of FIG. 3;
FIGS. 5 and 6 show two different angled exploded views of the present invention, respectively;
fig. 7 shows a schematic diagram of the working principle of the present invention.
Reference numerals:
10, a shaft bracket;
20 transmission shaft, 201 groove;
30 main shaft synchronous driven belt wheel;
40 rotating the guide sleeve to synchronize the driving pulley;
50 wheel frames, 501 central hole front end orifices and 502 central hole tail end orifices;
60 ball spline nuts;
70 sealing the bushing;
end wall portions of 80 end caps and 801 end caps;
the synchronous driving pulley of the main shafts 901 and 902, the belt 903, the rotary guide sleeve 904 and the rotary guide sleeve 905 are synchronous driven pulleys.
Detailed Description
The present application is further described below with reference to the accompanying drawings.
As shown in fig. 1 to 6, the auxiliary guide shaft transmission mechanism of a numerical control machine tool includes a shaft bracket 10, a transmission shaft 20, a main shaft synchronous driven pulley 30, a rotary guide sleeve synchronous driving pulley 40, a wheel bracket 50 and a ball spline nut 60;
the transmission shaft 20 is rotatably mounted on the shaft bracket 10, and the rotating guide sleeve synchronous driving pulley 40 is fixedly mounted on the transmission shaft 20;
the transmission shaft 20 is a spline shaft;
the ball spline nut 60 is sleeved outside the transmission shaft 20 to form a key connection that the ball spline nut is fixed circumferentially relative to the transmission shaft and slides axially;
the wheel carrier 50 is fixedly mounted on the ball spline nut 60;
the main shaft synchronous driven pulley 30 is fixedly mounted on the carrier 50.
This technical scheme can realize the synchronous driven pulley of main shaft to transmission shaft transmission torque through the cooperation that adopts ball spline nut and integral key shaft to drive the transmission shaft rotatory, also can realize that the synchronous driven pulley of main shaft can make endwise slip relative to the transmission shaft, so that the synchronous driven pulley of main shaft can cooperate the epaxial synchronous driving pulley of main shaft of digit control machine tool, its reasonable in design, under the requirement of satisfying big torque high accuracy transmission, can realize that the synchronous driven pulley of main shaft can make endwise slip relative to the transmission shaft, the implementation of the scheme of being convenient for.
The ball spline nut and the spline shaft are matched by the prior art, and the details are not repeated here.
The surface of the drive shaft 20 is provided with a plurality of grooves 201 extending in the axial direction of the drive shaft for receiving balls (not shown) on a ball spline nut.
The wheel frame 50 is provided with a central hole, the central hole penetrates through the wheel frame 50, a central hole front end orifice 501 is formed at the front end of the wheel frame, and a central hole tail end orifice 502 is formed at the tail end of the wheel frame;
the ball spline nut 60 is inserted into the central bore through the central bore front end aperture 501;
the central bore has a rear end opening 502 in which is disposed a sealing bushing 70 that is fitted over the drive shaft 20.
This technical scheme can play through set up sealed bush in centre bore tail end drill way and prevent during dust, piece get into the ball spline nut in the centre bore through centre bore tail end drill way, and influence the work of the ball in the ball spline nut and even destroy ball spline nut, from this in order to guarantee ball spline nut's life.
An end cap 80 is sleeved on the tail end of the wheel frame 50, and in the embodiment, the end cap is fixedly installed on the tail end of the wheel frame;
the end cap 80 includes an end wall portion 801 that covers the central bore trailing end aperture 502;
one end of the seal bush 70 abuts against the ball spline nut 60, and the other end of the seal bush 70 abuts against the end wall portion 801 of the end cover, so that the seal bush 70 is sandwiched and fixed between the ball spline nut 60 and the end wall portion 801 of the end cover.
This technical scheme can be convenient for the fixed mounting of seal bush.
The seal bush 70 is a steel sleeve, and the inner circle of the seal bush 70 is in clearance fit with the surface of the transmission shaft 20, so that the inner circle of the seal bush is not in contact with the surface of the transmission shaft, and the seal bush driven by the ball spline nut is prevented from being abraded due to friction generated on the surface of the seal bush and the surface of the transmission shaft when the seal bush slides along the axial direction of the transmission shaft.
In addition, the sealing bush can also be an elastic rubber ring, and at the moment, the inner circle of the sealing bush is in contact with the surface of the transmission shaft, so that the sealing effect is improved.
In this embodiment, as shown in fig. 7, the transmission shaft is parallel to a main shaft 901 of the numerical control machine, a main shaft synchronous driving pulley 902 is arranged on the main shaft 901 of the numerical control machine, and the main shaft synchronous driving pulley 902 is connected with a main shaft synchronous driven pulley 30 through a belt 903, so that the main shaft 901 of the numerical control machine drives the transmission shaft 20 to rotate synchronously; the rotating guide sleeve 904 of the numerical control machine tool is provided with a rotating guide sleeve synchronous driven pulley 905, and the rotating guide sleeve synchronous driving pulley 40 is connected with the rotating guide sleeve synchronous driven pulley 905 through a belt 903, so that the transmission shaft 20 drives the rotating guide sleeve 904 to rotate synchronously. Therefore, the main shaft 901 and the rotary guide sleeve 904 of the numerical control machine tool rotate synchronously.
Claims (6)
1. The utility model provides an auxiliary guide shaft drive mechanism of digit control machine tool, includes pedestal, transmission shaft, the synchronous driven pulleys of main shaft and the synchronous driving pulley of rotatory guide pin bushing, and this transmission shaft rotationally installs on the pedestal, and the synchronous driving pulley of this rotatory guide pin bushing is installed on the transmission shaft fixedly, its characterized in that:
the auxiliary guide shaft transmission mechanism of the numerical control machine tool also comprises a wheel carrier and a ball spline nut;
the transmission shaft is a spline shaft;
the ball spline nut is sleeved outside the transmission shaft to form a key connection that the ball spline nut is fixed circumferentially relative to the transmission shaft and slides axially;
the wheel carrier is fixedly arranged on the ball spline nut;
the main shaft synchronous driven pulley is fixedly arranged on the wheel carrier.
2. The auxiliary guide shaft transmission mechanism of the numerical control machine tool according to claim 1, wherein: the surface of the transmission shaft is provided with a plurality of grooves which extend along the axial direction of the transmission shaft and are used for accommodating the balls on the ball spline nut.
3. The auxiliary guide shaft transmission mechanism of the numerical control machine tool according to claim 1 or 2, wherein:
the wheel frame is provided with a central hole which penetrates through the wheel frame, a front end orifice of the central hole is formed at the front end of the wheel frame, and a tail end orifice of the central hole is formed at the tail end of the wheel frame;
the ball spline nut is inserted into the central hole through a hole at the front end of the central hole;
the hole at the tail end of the central hole is internally provided with a sealing bush sleeved outside the transmission shaft.
4. The auxiliary guide shaft transmission mechanism of a numerical control machine tool according to claim 3, wherein:
the tail end of the wheel frame is sleeved with an end cover;
the end cap comprises an end wall part which shields the port at the tail end of the central hole;
one end of the sealing bush abuts against the ball spline nut, and the other end of the sealing bush abuts against the end wall part of the end cover, so that the sealing bush is clamped and fixed between the ball spline nut and the end wall part of the end cover.
5. The auxiliary guide shaft transmission mechanism of the numerical control machine tool according to claim 4, wherein: the sealing bush is a steel sleeve, and the inner circle of the sealing bush is in clearance fit with the surface of the transmission shaft.
6. The auxiliary guide shaft transmission mechanism of the numerical control machine tool according to claim 4, wherein: the sealing bush is an elastic rubber ring, and the inner circle of the sealing bush is in contact with the surface of the transmission shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122263579.9U CN215788431U (en) | 2021-09-17 | 2021-09-17 | Auxiliary guide shaft transmission mechanism of numerical control machine tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122263579.9U CN215788431U (en) | 2021-09-17 | 2021-09-17 | Auxiliary guide shaft transmission mechanism of numerical control machine tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215788431U true CN215788431U (en) | 2022-02-11 |
Family
ID=80163963
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122263579.9U Active CN215788431U (en) | 2021-09-17 | 2021-09-17 | Auxiliary guide shaft transmission mechanism of numerical control machine tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215788431U (en) |
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2021
- 2021-09-17 CN CN202122263579.9U patent/CN215788431U/en active Active
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