A light high-power spindle output device for CNC machine tools

Abstract

The invention relates to a light high-power spindle output device for a numerically controlled machine tool, belonging to the technical field of spindle output devices, and comprising a housing, a power shaft with two ends rotatably mounted inside the housing through bearings, a stator disk, a left disk body, a right disk body and an intermediate disk body, wherein the left disk body, the intermediate disk body and the right disk body are fixedly mounted on the power shaft in sequence from left to right, at least one intermediate disk body is arranged between the left disk body and the right disk body, a plurality of magnetic sheets are installed on the right side surface of the left disk body, the left side surface of the right disk body and the left and right side surfaces of the intermediate disk body, stator disks are arranged on both sides of each intermediate disk body, and a plurality of stator disks are electrically connected to a power supply after being connected in parallel, an edge of the stator disk is fixed on the housing, and induction coils are printed on the left and right side surfaces of the stator disk, and when the stator disk is energized, it acts on the magnetic sheets to rotate the left disk body, the intermediate disk body and the right disk body, so as to solve the technical problems of low output power, large volume and large weight of the spindle of the machine tool in the prior art.

Description

Technical Field

[0001] The invention relates to a light high-power spindle output device for a numerically controlled machine tool, belonging to the technical field of spindle output devices. Background Art

[0002] Machine tools are frequently used in the mechanical processing industry. Machine tools are used to perform surface processing on parts. Since parts need to be processed in multiple directions and angles, the spindle motor generally has a supporting mechanism for driving the spindle motor to move along the X and Y directions in addition to its own rotation. The spindle motor in the prior art is large in size and heavy in weight. At the same time, the X-motor that drives the spindle motor to move in the X direction is large in size, and the power of the spindle motor is low. Summary of the invention

[0003] In view of the deficiencies in the prior art, the present invention provides a light and high-power spindle output device for a numerically controlled machine tool, so as to solve the technical problems of low output power, large size and heavy weight of the spindle of the machine tool in the prior art.

[0004] The technical solution of the present invention to solve the above technical problems is as follows: a light high-power spindle output device for a CNC machine tool comprises a shell, a power shaft rotatably mounted inside the shell at both ends through bearings, a stator disk, a left disk body, a right disk body and an intermediate disk body, the shell is provided with a plurality of heat dissipation holes, the heat dissipation holes penetrate the shell, and further comprises a cooling pipe with cold water passing therethrough, the cooling pipe penetrates the heat dissipation holes; the left disk body, the intermediate disk body and the right disk body are fixedly mounted on the power shaft in sequence from left to right, at least one intermediate disk body is arranged between the left disk body and the right disk body, the right side surface of the left disk body, the left side surface of the right disk body and the left and right side surfaces of the intermediate disk body are all installed A plurality of magnetic sheets are installed, and stator sheets are arranged on both sides of each middle disk body. After the plurality of stator sheets are connected in parallel, they are electrically connected to the power supply. The edge of the stator sheet is fixed on the shell. The stator sheet is provided with a central through hole for the power shaft to pass through, and the diameter of the central through hole is larger than the diameter of the power shaft. Induction coils are printed on the left and right sides of the stator sheet. After the stator sheet is energized, it acts on the magnetic sheets to rotate the left disk body, the middle disk body and the right disk body. A spacer sleeve is installed between the right disk body and the bearing at the right end of the power shaft, and a gasket is installed between the left disk body and the bearing at the left end of the power shaft. The spacer sleeve and the gasket are coaxially installed on the power shaft and their diameters are smaller than the inner ring diameter of the bearing.

[0005] The beneficial effects of the present invention are as follows: by adopting the above-mentioned output device, by adopting the interaction between the stator disk with printed coils and the magnetic sheets on the left disk body, the right disk body and the middle disk body, the left disk body, the right disk body and the middle disk body are rotated to drive the power shaft to rotate. Compared with the structure of the traditional machine tool spindle motor, it has no iron core, smaller volume, lighter weight, and improved output power; the number of middle disk bodies is selected according to the output power requirement, which is suitable for occasions with different power requirements and has a wide range of applications.

[0006] Based on the above technical solution, the present invention can also be improved as follows.

[0007] Furthermore, the power shaft is connected to the intermediate disk body via a key, and a plurality of key slots corresponding to the intermediate disk body are arranged on the power shaft, and the axial projection of the plurality of key slots on the power shaft is arranged in a circle.

[0008] The beneficial effect of adopting the above further scheme is that by using a key connection to install the power shaft and the intermediate disk body, the connection stability of the output device is increased, which is convenient for disassembly, installation and maintenance. At the same time, the position of the keyway is set to be arranged in a circle in the axial projection of the power shaft to prevent the keyway from being located in a straight line on the power shaft, thereby avoiding reducing the strength of the power shaft due to the keyway, extending the service life of the device and reducing the failure rate.

[0009] Furthermore, the outer diameter end surface of the intermediate disc body is configured as a gear or a pulley.

[0010] Furthermore, both ends of the power shaft extend out of the housing.

[0011] The beneficial effect of adopting the above further scheme is that by adopting gear or pulley transmission, power is directly transmitted to the passive component, which reduces power loss and improves output power; by extending the two ends of the power shaft out of the shell, power is output to the passive component through the power shaft.

[0012] Furthermore, a code disc is installed on the power shaft, and an encoder is installed inside the shell, and the encoder is used in conjunction with the code disc.

[0013] The beneficial effect of adopting the above further solution is that, by providing an encoder and a code disc, it is convenient to accurately control the rotational displacement of the power shaft and improve the accuracy of the output device.

[0014] Furthermore, an O-ring is installed between the bearing outer ring and the housing.

[0015] The beneficial effect of adopting the above further solution is that, by providing an O-ring, it is helpful to improve the operating stability of the device, reduce the noise generated by vibration, buffer the force between the bearing and the housing, and increase the service life of the device.

[0016] Furthermore, paper pads are installed between the two side surfaces of the stator disc and the housing.

[0017] The beneficial effect of adopting the above further solution is that by providing a paper pad with insulating properties, the stator disc and the housing are insulated to prevent leakage and improve the safety of the device.

[0018] Furthermore, bosses are provided on both sides of the through hole of the middle disk body, and bosses are provided on the right side of the through hole of the left disk body and the left side of the through hole of the right disk body. The outer diameter of the bosses is smaller than the diameter of the central through hole of the stator disk.

[0019] The beneficial effect of adopting the above further solution is that by setting the boss, an installation space is provided for the stator disk, the distance between the magnetic sheet and the stator disk is maintained, the stability of the device is improved, and the strength of the middle disk body, the left disk body and the right disk body is strengthened. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a right view structural schematic diagram of the present invention;

[0021] Figure 2 It is a cross-sectional structural schematic diagram of the present invention;

[0022] Figure 3 It is a schematic diagram of the three-dimensional structure of the right disk;

[0023] Figure 4 It is a schematic diagram of the three-dimensional structure of the middle disk.

[0024] In the figure, 1. housing, 2. O-ring, 3. power shaft, 4. bearing, 5. spacer, 6. right disk body, 7. magnetic sheet, 8. paper pad, 9. stator disk, 10. middle disk body, 11. left disk body, 12. encoder, 13. code disk, 14. boss, 15. center through hole, 16. key, 17. gasket. DETAILED DESCRIPTION

[0025] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0026] A light high-power spindle output device for a numerically controlled machine tool comprises a housing 1, a power shaft 3 rotatably mounted inside the housing 1 at both ends through bearings 4, a stator disk 9, a left disk body 11, a right disk body 6 and an intermediate disk body 10, wherein the housing 1 is provided with a plurality of heat dissipation holes, wherein the heat dissipation holes penetrate the housing 1, and further comprises a cooling pipe through which cold water passes, wherein the cooling pipe penetrates the heat dissipation holes; an O-type sealing ring 2 is further installed between the outer ring of the bearing 4 and the housing 1, and the provision of the O-type sealing ring 2 is conducive to improving the running stability of the device, reducing the noise generated by vibration, buffering the force between the bearing 4 and the housing 1, and improving the service life of the device, wherein the left disk body 11, the intermediate disk body 10 and the right disk body 11 are provided with a plurality of heat dissipation holes, wherein the heat dissipation holes penetrate the housing 1, and further comprises a cooling pipe through which cold water passes, and wherein the cooling pipe penetrates the heat dissipation holes; an O-type sealing ring 2 is further installed between the outer ring of the bearing 4 and the housing 1, and the provision of the O-type sealing ring 2 is conducive to improving the running stability of the device, reducing the noise generated by vibration, buffering the force between the bearing 4 and the housing 1, and improving the service life of the device, The left and right disk bodies 11 and 6 are fixedly installed on the power shaft 3 from left to right in sequence. The left and right disk bodies 11 and 6 are installed with interference fit with the power shaft 3. The power shaft 3 is connected to the intermediate disk body 10 by a key 16. The power shaft 3 is provided with a plurality of key slots corresponding to the intermediate disk body 10. The axial projections of the plurality of key slots on the power shaft 3 are arranged in a circle, that is, the positions of the key slots on the power shaft 3 are not on the same straight line. By connecting and installing the power shaft 3 and the intermediate disk body 10 with the key 16, the connection stability of the output device is increased, and the disassembly, installation and maintenance are facilitated. At the same time, the position of the key slot is set to be arranged in a circle in the axial projection of the power shaft 3 to prevent the key slot from being located on the power shaft 3. The left and right disk bodies 11 and 6 are arranged in a straight line, thereby avoiding the reduction of the strength of the power shaft 3 due to the keyway, extending the service life of the device and reducing the failure rate. Three intermediate disk bodies 10 are arranged between the left disk body 11 and the right disk body 6. The right side of the left disk body 11, the left side of the right disk body 6 and the left and right sides of the intermediate disk body 10 are all detachably installed with six magnetic sheets 7 by screws. Stator disks 9 are arranged on both sides of each intermediate disk body 10. The device has a total of four stator disks 9. The four stator disks 9 are electrically connected to the power supply after being connected in parallel. The edges of the stator disks 9 are fixed to the housing 1 by bolts. Paper pads 8 are installed between the two sides of the stator disk 9 and the housing 1. By arranging the paper pads 8 with insulating properties, The stator disk 9 is insulated from the housing 1 to prevent leakage and improve the safety of the device. The stator disk 9 is provided with a central through hole 15 for the power shaft 3 to pass through, and the diameter of the central through hole 15 is larger than the diameter of the power shaft 3. Induction coils are printed on the left and right sides of the stator disk 9. When the stator disk 9 is energized, it acts on the magnetic sheet 7 to rotate the left disk body 11, the middle disk body 10 and the right disk body 6. A spacer sleeve 5 is installed between the right disk body 6 and the bearing 4 at the right end of the power shaft 3. A gasket 17 is installed between the left disk body 11 and the bearing 4 at the left end of the power shaft 3. The spacer sleeve 5 and the gasket 17 are coaxially installed on the power shaft 3 and have a diameter smaller than the inner ring diameter of the bearing 4.

[0027] The outer diameter end surface of the intermediate disk body 10 is set as a gear or a pulley, and the two ends of the power shaft 3 extend out of the shell 1. By adopting gear or pulley transmission, the power is directly transmitted to the passive component, which reduces power loss and improves output power; by extending the two ends of the power shaft 3 out of the shell 1, the power is output to the passive component through the power shaft 3.

[0028] A code disc 13 is also installed on the power shaft 3, and an encoder 12 is installed inside the housing 1. The encoder 12 is used in conjunction with the code disc 13. By setting the encoder 12 and the code disc 13, it is beneficial to accurately control the rotational displacement of the power shaft 3 and improve the accuracy of the output device.

[0029] Bosses 14 are provided on both sides of the through hole of the middle disk body 10, and bosses 14 are provided on the right side surface of the through hole of the left disk body 11 and the left side surface of the through hole of the right disk body 6. The outer diameter of the boss 14 is smaller than the diameter of the central through hole 15 of the stator disk 9. By providing the boss 14, an installation space is provided for the stator disk 9, the distance between the magnetic sheet 7 and the stator disk 9 is maintained, the stability of the device is improved, and the strength of the middle disk body 10, the left disk body 11 and the right disk body 6 is strengthened.

[0030] By adopting the above-mentioned output device, through the interaction between the stator disk 9 with printed coils and the magnetic sheets 7 on the left disk body 11, the right disk body 6 and the middle disk body 10, the left disk body 11, the right disk body 6 and the middle disk body 10 are rotated to drive the power shaft 3 to rotate. Compared with the structure of the traditional machine tool spindle motor, it has no iron core, smaller volume, lighter weight, and improved output power. The number of middle disk bodies 10 is selected according to the output power requirement, which is suitable for occasions with different power requirements and has a wide range of applications.

[0031] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A lightweight high-power spindle output device for a CNC machine tool, characterized in that: It includes a housing, a power shaft rotatably mounted inside the housing at both ends through bearings, a stator disc, a left disc body, a right disc body and an intermediate disc body, wherein the left disc body, the intermediate disc body and the right disc body are fixedly mounted on the power shaft from left to right in sequence, at least one intermediate disc body is arranged between the left disc body and the right disc body, a plurality of magnetic sheets are installed on the right side surface of the left disc body, the left side surface of the right disc body and the left and right sides of the intermediate disc body, stator discs are arranged on both sides of each intermediate disc body, and a plurality of stator discs are electrically connected to a power source after being connected in parallel, and the The edge of the stator disk is fixed on the shell, and the stator disk is provided with a central through hole for the power shaft to pass through, and the diameter of the central through hole is larger than the diameter of the power shaft. Induction coils are printed on the left and right sides of the stator disk. When the stator disk is energized, it acts on the magnetic sheet to rotate the left disk body, the middle disk body and the right disk body. A spacer is installed between the right disk body and the bearing at the right end of the power shaft, and a gasket is installed between the left disk body and the bearing at the left end of the power shaft. The spacer and the gasket are coaxially installed on the power shaft and have a diameter smaller than the inner ring diameter of the bearing.

2. A lightweight high-power spindle output device for a CNC machine tool according to claim 1, characterized in that: The power shaft is connected to the intermediate disk body via a key. The power shaft is provided with a plurality of key slots corresponding to the intermediate disk body. The plurality of key slots are arranged in a circle in the axial direction of the power shaft.

3. A lightweight high-power spindle output device for a CNC machine tool according to claim 2, characterized in that: The outer diameter end surface of the intermediate disc body is arranged as a gear or a pulley.

4. A lightweight high-power spindle output device for a CNC machine tool according to claim 2, characterized in that: Both ends of the power shaft extend out of the housing.

5. A lightweight high-power spindle output device for a CNC machine tool according to claim 3 or 4, characterized in that: A code disc is also installed on the power shaft, and an encoder is installed inside the shell, and the encoder is used in conjunction with the code disc.

6. A lightweight high-power spindle output device for a CNC machine tool according to claim 1, characterized in that: An O-type sealing ring is also installed between the bearing outer ring and the housing.

7. A lightweight high-power spindle output device for a CNC machine tool according to claim 1, characterized in that: Paper pads are installed between the two side surfaces of the stator disc and the housing.

8. The light high-power spindle output device for CNC machine tools according to claim 1, characterized in that: Bosses are arranged on both sides of the through hole of the middle disk body, and bosses are arranged on the right side of the through hole of the left disk body and the left side of the through hole of the right disk body. The outer diameter of the bosses is smaller than the diameter of the central through hole of the stator disk.

9. The light-weight high-power spindle output device for a CNC machine tool according to claim 1, characterized in that: A plurality of heat dissipation holes are arranged on the shell, and the heat dissipation holes penetrate the shell.

10. A light high-power spindle output device for a CNC machine tool according to claim 9, characterized in that: It also includes a cooling pipe through which cold water passes, and the cooling pipe penetrates the heat dissipation hole.

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