JPH0463675A - Brush rotating device - Google Patents

Abstract

PURPOSE:To improve grinding capabilities and suppress noise by separately using a drive source for rotating a brush and a drive source for revolving the brush. CONSTITUTION:A brush tool 5 rotated around the axis of a brush shaft 50 is rotated by a brush rotating motor 4. The brush tool 5 rotated around the axis of a rotary casing 2 is revolved by a brush revolving motor 8. The rotating speed of the brush tool 5 is increased, the revolving speed of the brush tool 5 is decreased, and the value of the brush rotating speed/brush revolving speed for a fixed time is increased.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a brush rotating device having a planetary gear mechanism.

This brush rotating device is suitable for use as an end-grinding device for grinding longitudinal end surfaces of a single or a plurality of bar materials, pipe materials, angle materials, channel materials, H materials, construction materials, etc., for example.

[Prior Art] A brush rotating device having a planetary gear mechanism has been known. This brush rotation device consists of a main shaft rotatably supported on a fixed base, a rotating drum that rotates as the main shaft rotates, an appropriate number of brush tools with a grinding function held by the rotating drum, and a rotating drum. and a planetary gear mechanism interposed between the main shaft and the main shaft.

This planetary gear mechanism consists of a ring-shaped internal gear with teeth on the inner periphery, and a planetary gear placed on the internal periphery side of the internal gear and held on the brush shaft of the brush tool. .

When this device is used, the main shaft is rotated by the motor, and the rotating drum rotates around the axis of the main shaft. Then, the brush tool held by the rotating drum revolves around the axis of the main shaft at a predetermined speed. At this time, the planetary gear held on the brush shaft of the brush tool sequentially meshes with the ring-shaped internal gear and rotates around the axis of the brush shaft, so that the brush tool rotates around the axis of the brush shaft in a specified position. rotates at a speed of

In other words, a brush with a grinding function rotates around the axis of the brush shaft and revolves around the axis of the main shaft, that is, the axis of the rotating drum, thereby grinding the end surface of the object to be processed. Ru.

[Problems to be Solved by the Invention] In the above-mentioned rotating brush device, in order to improve the grinding ability, it is necessary to increase the rotation speed at which the brush rotates around the axis of the brush shaft. However, in order to increase the rotation speed of the brush, the rotation speed of the main shaft must be increased, and in this case, as the speed of the main shaft increases, the rotation speed of the rotating drum also increases. If the speed of the rotating drum is increased in this way, the revolving speed of the brush will also increase, which is disadvantageous in terms of grinding.
Moreover, the noise becomes louder, which is disadvantageous in terms of noise prevention.

Further, as the speed of the rotating drum increases, the circumferential speed of the outer peripheral portion of the rotating drum becomes faster. Therefore, when an oil seal is interposed between the outer circumferential portion of the rotating drum and the housing, there is a problem that the circumferential speed of the outer circumferential portion of the rotating drum exceeds the permissible circumferential speed of the oil seal.

Therefore, there is a problem of heat generation of the oil seal and damage to the oil seal.

The present invention was made in view of the above-mentioned circumstances, and its purpose is to increase the rotational speed of the brush that rotates around the axis of the brush shaft while slowing down the revolution speed of the brush that rotates around the axis of the rotating casing. The present invention aims to provide a rotating brush device in which the value of (number of rotations of the brush/number of revolutions of the brush) is increased.

[Means for Solving the Problems] The present invention provides a rotating brush device comprising: a fixed base; a shaft core;
A rotating casing that has a drive wheel that goes around the shaft once in the circumferential direction and has a planetary gear chamber inside, and a rotating casing that is coaxially and rotatably held on a fixed base with one end attached to the planetary gear chamber of the rotating casing. a main shaft extending coaxially with a sun gear constituting a planetary gear mechanism located in the planetary gear chamber;
an appropriate number of brush shafts rotatably held at predetermined intervals around the axis of the rotating casing and parallel to the main shaft;
A brush tool having a planetary gear located in a planetary gear chamber and held on each brush shaft and meshed with a sun gear of a main shaft and rotated by the sun gear, and a brush held on each brush shaft and capable of facing a workpiece. , consisting of a brush rotation motor disposed on a fixed base and connected to the other end of the main shaft to rotate the main shaft, and a brush revolution motor that rotates a drive wheel of the rotating casing to rotate the rotating casing, A brush rotation motor rotates the brush around the axis of the brush shaft, and the brush rotation motor rotates the brush around the axis of the rotating casing, increasing the rotation speed of the brush and rotating the brush. (brush rotation number/brush revolution number) per certain period of time
The feature is that the value of is increased.

The drive wheel of the rotating casing can be a ring gear. A ring gear with a large number of teeth is advantageous in reducing the rotational speed of the rotating casing. Further, the drive wheel can also have a pulley structure, in which case the belt is locked in the pulley groove.

As the motor for rotating the brush and the motor for rotating the brush, known motors can be used. Since a low speed is preferable for the brush revolving shaft, a motor with a speed reduction mechanism or a stepping motor can be used, for example.

It is preferable that the deceleration mechanism is equipped with a continuously variable transmission that can perform stepless deceleration.

Since the planetary gear of the brush tool is held by the rotating casing, it does not revolve around the sun gear unless the rotating casing rotates.

[Function] The function of the device of the present invention will be explained together with its usage method.

In the apparatus of the present invention, the driving force of the brush rotation motor is transmitted to the planetary gear mechanism via the main shaft, so that the rotation speed of the brush of the brush tool is increased.

Further, the driving force of the brush revolution motor is transmitted to the rotating casing via the drive wheel, and the rotating casing rotates at a low speed. Therefore, in the device of the present invention, the rotation speed of the brush of the brush tool can be increased while the revolution speed of the brush can be decreased.

In addition, in the apparatus of the present invention, the brush revolution motor can also be stopped depending on the grinding situation.

[Example] An example of the apparatus of the present invention will be described based on FIGS. 1 to 3.

(Structure) The rotating drum device of this embodiment is composed of a fixed base 1, a rotating casing 2, a main shaft 3, a brush rotation motor 4, a brush tool 5.6, and a brush revolution motor 8. There is.

The fixed base 1 has a bottom bracket 10, a side bracket 11, a motor mounting base 12, and a fixed cylinder part 13 fixed to the side bracket 11.

The rotating casing 2 has a horizontal shaft-shaped cylindrical portion 2 having a partition wall 20.
1, a front plate 22 attached to the front opening of the cylindrical part 21 via a port 22h, a rear plate 24 that covers the rear opening of the cylindrical part 21 and has a holding cylindrical part 23, a rear cylindrical part 25, and a rear cylindrical part 22. The end plate 27 is held at the portion 25 via bolts 26.

The rotating casing 2 is held on the fixed base 1 via a ring-shaped bearing 16 and a ring-shaped oil seal 15 in a fixed cylindrical portion 13 of the fixed base 1 so as to be freely rotatable in the circumferential direction. Furthermore, a planetary gear to 28 is formed inside the rotating casing 2. A ring gear 29 serving as a driving wheel is held on the outer periphery of the rear cylindrical portion 25 of the rotating casing 2 so as to rotate once around the axis 2a. The diameter of the ring gear 29 is close to the diameter of the rotating casing 2, and is large. Therefore, in order to increase the reduction ratio, the ring gear 29 has a large number of teeth.

The main shaft 3 is held on the fixed base 1 via a bearing 30 so as to be rotatable coaxially with the rotary casing 2 .

The main shaft 3 has a shaft portion 35 and a coupling 35a to the shaft portion 35.
, 35b, and a shaft portion 36 connected in series via . The reason for dividing the parts in series in this way is to ensure ease of disassembly and assembly.

One end 3a side of the main shaft 3 is a planetary gear chamber 2 of the rotating casing 2.
B, and furthermore, the front plate 2 of the rotating casing 2.
It is attached to the shaft hole of No. 2 via a bearing 22a and a contact plate 22b. A sun gear 32.33 is coaxially fixed to one end 3a of the main shaft 3, and the sun gear 32.33 is arranged in the planetary gear chamber 28. Note that bearings 38 and 39 are interposed between the main shaft 3 and the rotating casing 2, and furthermore, a bearing 18 is interposed between the rotating casing 2 and the fixed cylinder portion 13.

The brush rotation motor 4 is an inverter variable type,
It is located behind the rotating casing 2 and fixed to the motor mounting base 12 of the fixed base 1. The motor shaft 40 of the brush rotation motor 4 is disposed coaxially with the main shaft 3, and the motor shaft 40 is connected to the main shaft 3 by being fitted into the shaft hole 3C on the narrow end 3b side of the main shaft 3.

As shown in FIG. 2, a total of two normal rotation brushes 5 are arranged around the axis 2a of the rotating casing 2 at intervals of 180 degrees. Each forward rotation brush tool 5 has a bearing 56.57
A brush shaft 50 is rotatably held via a brush shaft 50, a planetary gear 51 is located at the planetary gear to 28 and held on each brush shaft 50, and a brush flange 52 and a nut 53 are held on each brush shaft 50. and a brush 54 that can face the object W to be processed. The brush shaft 50 is set parallel to the main shaft 3. The brush 54 is formed by bundling brush wires into a ring shape.

As shown in FIG. 2, the reversing brushes 6 are arranged around the axis 2a of the rotating casing 2 at intervals of 180 degrees. Each reverse rotation brush tool 6 has basically the same configuration as the normal rotation brush tool 5, and as shown in FIG. 61, and a brush 64 which is held at the end of each brush shaft 60 via a brush flange 62 and a nut 63 and can face the object W to be processed.

Furthermore, the rotating casing 2 is equipped with an idler 7. The idler 7 includes an idler shaft 70 and an idler gear 72 rotatably held on the idler shaft 70 via a bearing 71.

Here, the idler gear 72 meshes with the sun gear 33 and also with the planetary gear 61 of the reversing brush tool 6. Here, when the main shaft 3 rotates in the direction of arrow M, the idler gear 72 rotates in the direction of arrow E1 via the sun gear 33. Along with this, the planetary gear 61 of the reverse rotation brush tool 6 rotates in the direction of arrow F1, and the reverse rotation brush 64 or the forward rotation brush 54 rotates.
Rotates in the opposite direction to the direction of rotation.

In this embodiment, the sun gear 32, 33 and the planetary gear 5
1.61. The teeth of the idler gear 72 have a helical structure to ensure smooth rotation.

The brush revolution motor 8 is fixed to the fixed base 1, and includes a main body 80 having a speed reduction mechanism with a continuously variable transmission, and a motor shaft 8.
1 and a drive gear 82 attached to a motor shaft 81. The drive gear 82 meshes with the ring gear 29 of the rotating casing 2, so when the motor 8 is driven, the drive gear 82 is engaged with the ring gear 29 through the motor shaft 81 and the drive gear 82.
9 rotates, so that the rotating casing 2 rotates around its axis 2.
Rotate around a in the direction of arrow A1.

(Function) Next, the case where the rotating brush device of this embodiment is used will be explained. First, the brush rotation motor 4 and the brush revolution motor 8 are driven. When the brush revolution motor 8 is driven, the drive gear 82 rotates as described above, and the ring gear 29 rotates. As a result, the rotating casing 2 is
Rotates around the axis 3C at low speed (about 80 rDm).

Therefore, the two forward rotation brush tools 5 and the two reverse rotation brush tools 6 held in the rotating casing 2 both rotate around the axis 3c of the main shaft 3 (that is, the axis 2a of the rotating casing 2). , that is, the direction of rotation of arrow A shown in Fig. 2.
It revolves at low speed in one direction.

Similarly, the idler 7 also moves around the axis 3C of the main shaft 3 with the arrow A.
It revolves in one direction. Note that the imaginary line shown in FIG. 2 means the locus of movement of the brush shaft 50, 60, and the imaginary line J means the locus of movement of the idler shaft 70.

Further, when the brush rotation motor 4 rotates, the main shaft 3 rotates in the direction of arrow M, and the sun gears 32 and 33 rotate in the same direction.
2, move around the axis of the brush shaft 50 with arrow B1.
Therefore, the forward rotation brush 54 rotates at high speed in the direction of arrow B1 (approximately 200 Qrpm).

Further, when the main shaft 3 rotates in the direction of arrow M, the idler gear 72 rotates around the idler shaft 70 in the direction of arrow E1. Therefore, the planetary gear 61 of the reversing brush tool 6 or the arrow [
One direction (rotates. That is, the brush 64 of the reverse rotation brush tool 6 rotates at high speed in the direction opposite to the rotational direction of the brush 54 of the forward rotation brush tool 5, that is, in the direction of arrow F1.
Note that as the planetary gears 51.61 revolve, oil in the planetary gear chamber 28 falls on the motion mechanisms such as the planetary gears 51.61 and the sun gears 32.33, smoothing out the rotational operation.

By the way, in this embodiment, the rotating casing 2 does not rotate unless the revolution motor 8 is driven, and therefore the planetary gears 51, 61, brushes 54, .
64 does not revolve.

(Effects) As described above, in this embodiment, the sun gears 32 and 33 constituting the planetary gear mechanism are rotated by the brush rotation motor 4 via the main shaft 3.

On the other hand, the rotating casing 2 is configured to be rotated by a brush revolution motor 8 via a ring gear 29.

Therefore, while increasing the rotational speed of the brush rotation motor 4 and increasing the speed of the sun gears 32 and 33, the rotational speed of the rotating casing 2 can be decreased by decreasing the rotational speed of the brush revolution motor 8.

That is, in this embodiment, the rotation speed of the forward rotation brush tool 5 and the reverse rotation brush tool 6 held in the rotating casing 2 is increased, while the revolution speed of the forward rotation brush tool 5 and the reverse rotation brush tool 6 is decreased. Therefore, the grinding ability can be improved.

In particular, since the brush revolution motor 8 has a variable speed function,
Depending on the type of brushes 54, 64, the type of object W to be processed, etc., the rotational speed of the rotating casing 2 can be changed steplessly to medium-low speed, low speed, or very low speed. Further, depending on the grinding situation, the brush revolution motor 8 can be kept stopped while the brush rotation motor 4 is continuously driven, or the brush revolution motor 8 can be driven intermittently. Therefore, the apparatus of this embodiment can cope with various variations in grinding conditions.

As described above, in this embodiment, the rotation speed of the rotating casing 2 can be lowered while increasing the rotation speed of the forward rotation brush tool 5 and the reverse rotation brush tool 6. The degree of sliding with respect to 25 can also be suppressed as much as possible.

Therefore, it is advantageous to avoid heat generation of the oil seal 15, damage to the oil seal 15, and oil leakage from the oil seal 15.

Moreover, since the rotation speed of the large rotary casing 2 can be reduced while increasing the speed of the brushes 54 and 64 to improve the grinding ability, it is also advantageous for noise suppression.

In addition, in this embodiment, the motor shaft 4 of the brush rotation motor 4
0 is disposed coaxially with the main shaft 3 and rearward of the main shaft 3, which is advantageous in reducing the height of the entire device.

[Effects of the Invention] According to the brush rotation device of the present invention, the drive source for the rotation of the brush and the drive source for the revolution of the brush are different. Therefore, the rotation speed of the rotary casing can be reduced while increasing the rotation speed of the brush tool. Therefore, it is possible to increase the rotational speed of the brush of the brush tool to improve the grinding ability, while reducing the rotational speed of the large rotary casing to suppress noise.

Moreover, when an oil seal is interposed between the rotating casing and the fixed base, the speed of the rotating casing can be reduced, so that the degree of sliding of the oil seal can be suppressed as much as possible. Therefore, it is advantageous to avoid heat generation of the oil seal, damage to the oil seal, and oil leakage from the oil seal.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention; FIG. 1 is a longitudinal sectional view of the entire device, FIG. 2 is a front view of the entire device, and FIG. 3 is a sectional view of the vicinity of the reversing brush tool. In the figure, 1 is a fixed base, 2 is a rotating casing, 29 is a ring gear (drive wheel), 3 is a main shaft, 4 is a brush rotation motor,
5 is a forward rotation brush tool, 6 is a reverse rotation brush tool, and 8 is a brush revolution motor.

Claims (1)

[Claims] (1) a fixed base; a rotating casing that has a shaft core, is held by the fixed base so as to be rotatable around the shaft core, has a drive wheel that goes around the shaft core once in the circumferential direction, and has a planetary gear chamber inside; , a sun gear constituting a planetary gear mechanism held in the fixed base coaxially and rotatably with the rotating casing, with one end extending into the planetary gear chamber of the rotating casing, and located in the planetary gear chamber. a coaxial main shaft; an appropriate number of brush shafts rotatably held at predetermined intervals around the axis of the rotating casing and parallel to the main shaft; a brush tool having a planetary gear held on the brush shaft and meshed with the sun gear of the main shaft and rotated by the sun gear; and a brush held on each of the brush shafts and capable of facing the object to be treated; Consisting of a brush rotation motor that is disposed on a stand and connected to the other end of the main shaft to rotate the main shaft, and a brush revolution motor that rotates the drive wheel of the rotating casing to rotate the rotating casing. The brush rotates around the axis of the brush shaft using the brush rotation motor, and the brush revolves around the axis of the rotating casing using the brush revolution motor.
The rotation speed of the brush is increased while the rotation speed of the brush is slowed down, so that (brush rotation number/per certain time)
A brush rotating device characterized by having a large value (brush revolution number).