JPS63229257A - Block contact surface grinder for steel v-belt - Google Patents

Abstract

PURPOSE:To improve motive power transmission through the increase of frictional force acting upon the space between V-pulleys by attaching on the side surfaces of a V-belt grinding dies of the same inclination with those of the side surfaces and furnishing them so as to be movable at right angles with the travel direction of the V-belt. CONSTITUTION:Grinding dies 4a, 4b guided by two shafts 5, 5 as guides are furnished with a V-belt B placed between them and the interval is made to be freely changeable, and moreover, both grinding dies 4a, 4b are together made to be shaft-supported in a free state with a main shaft 6. On account of this, both grinding dies 4a, 4b are not only changed in their interval but also can be moved as a whole in the direction of the main shaft 6, and moreover, can be swung in the directions of a, b with the main shaft 6 as a center. By assembling this device A into a stepless speed change gear, grinding dies 4a, 4b come into contact with the V-belt B and remove additives or the like stuck on the side surfaces and roughen the polished lustrous surfaces. Accordingly, frictional force acting upon the space between V-pulleys is increased and the improvement of motive power transmission can be attempted.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention is installed in a continuously variable transmission and rubs against the sides of a steel V-belt to create a fresh surface, thereby reducing the friction generated between the steel V-belt and the V-pulley. The present invention relates to a device for increasing a coefficient.

(Prior Art) A steel V-belt is wound around a V-pulley to transmit power, and the power is transmitted by the frictional force generated between the side surface of the steel V-belt and the seven surfaces of the V-pulley. In order to achieve large power transmission and to improve transmission efficiency, it is necessary to increase the friction coefficient and friction force between the side surface of the steel V belt and the V surface of the V pulley. There must be.

By the way, if such a steel V-belt is used wrapped around a pulley, the sides of the steel V-belt and the V-pulley will gradually become polished, and compounds with low friction coefficients such as extreme pressure additives in the oil will precipitate. A phenomenon occurs in which the particles adhere to the side surfaces.

(Objective of the present invention) If the steel V-belt is wound around a pulley in this way, the mutual contact surfaces will be polished, and compounds such as extreme pressure additives will be attached to the side surfaces of the steel V-belt and the contact surfaces will be re-contacted. The friction coefficient decreases between the steel V-belts and the steel V-belt. , and an apparatus for polishing the side surfaces.

(Structure of the Present Invention) The block contact surface polishing device for a steel V-belt according to the present invention is constructed with the following features in order to solve the above-mentioned problems.

The basic form of the apparatus of the present invention is equipped with a polishing die that contacts both sides of the steel V-belt, and the inner surface of the polishing die is inclined at the same angle of inclination as the block side of the steel V-belt.

The polishing die may be attached so that it is always in contact with the side surface of the steel V-belt with a constant pressing force by the force of a spring or the like, or it may be attached so that it is brought into contact intermittently after a certain period of time. The shape of the polishing die is not particularly limited, and it may be a block body whose inner surface has an inclined surface that conforms to the side surface of the steel V belt. It can also be a supported cylinder. These polishing dies are made of ceramic, cemented carbide, high carbon steel, decharred steel, iron with hard particles attached only to the contact surface by thermal spraying, etc., aluminum alloy, plastic, etc. The contact surface is roughened if necessary.

(Function) A type of polishing device constructed in this way is attached to a frame of a power transmission device equipped with a V-pulley and around which the steel V-belt is wound.

The polishing die of the polishing device contacts both sides of the steel V-belt. The steel V-belt is moved by the rotation of the V-pulley, and is in contact with the stationary contact surface of the polishing die. In addition, the device is not fixed to the frame, but moves to follow the movement of the steel V-belt, and can polish the side surface of the steel V-belt no matter how large the diameter of the winding around the V-pulley is torn. Can be done. That is, the device is mounted between both pulleys, giving freedom for axial movement of the V-pulley as well as for tilting movement in the mounting position. However, this device brings the polishing die of the polishing device into contact with the side surface of the steel V-belt that engages in the continuously variable transmission device, removes deposits attached to the side surface of the steel V-belt, and at 1 o'clock makes the side surface rough. It is not something that generates grinding powder like grinding process such as machine work, because if grinding powder gets mixed into the automatic transmission device, it will cause heat generation and cause abnormality in the automatic transmission device. It happens.

Embodiments of the polishing apparatus according to the present invention will be described in detail below with reference to the drawings.

(Example) Fig. 1 shows a specific example of the polishing device of the present invention, where A is the polishing device and B is a steel V-belt (hereinafter abbreviated as V-belt).
■Belt B is two parallel bands l
, 1, a large number of blocks 2, 2, . . . are arranged without gaps. Both side surfaces 3.3 of the (bell) H are inclined at a constant angle of inclination, and are wound around a V-pulley having seven surfaces having the same inclination angle as the inclination angle. Here, the form of the V-belt B shown in the same figure is an example, and is not limited to this form.
The device of the present invention can be applied to all V-belts as long as they are made of steel.

By the way, this device A uses a polishing die 4a with a V-belt in between.
. It is pivoted in the aligned state. Therefore, not only the distance between the polishing dies 4a and 4b varies, but also the whole can move in the direction of the main shaft 6.
Centered around a.

It becomes possible to swing in direction b. A coil spring 7 is inserted into the shaft 5, and a washer 8 fixed to the end of the shaft with a circlip serves as a receiver on one side of the polishing die 4.
A spring force acts to reduce the distance between a and 4b,
The inner surfaces 9 of the polishing dies 4a, 4b are in contact with the side surface 3 of the V-bell (B). The inner surface 9 corresponds to the inclination angle of the side surface 3 of (1) H, and is in contact with the polishing die 4 over its entire length. The polishing die 4 contacts the side surface 3 of the V-belt B with its inner surface 9. However, these inner surface 9 and side surface 3
Since is a V-shaped contact surface, the contact pressure that is applied will push the V bell) B outward (upward in Figure 1), so a guide 10 is formed to prevent this. The entrance/exit end 11.11 of the guide IO is rounded so that the V-bell (B) can smoothly enter the polishing die 4. The polishing die 4 performs frictional sliding on the side surface 3 of the V-bell (B) to freshen the side surface 3, and is made of a hard material such as ceramic or cemented carbide. If a soft and light aluminum alloy or plasti-2 is used for the material, hard particles must be attached to the inner surface of the material.

2 and 3 show other embodiments of the present invention,
In the apparatus shown in this embodiment, both polishing dies 4a, 4b
The distance between the two shafts 13.13 is always constant, and the two shafts 13.13 are fixed to each other with a collar 12 in between. By the way, as shown in the cross-sectional view in FIG. 3, the distance between the two polishing dies 4a, 4b is larger than the width of the V bell (B), and the inner surfaces 9, 9 of the stomach simultaneously touch the side surface 3 of the block 2.
The main shaft 14 itself moves in the axial direction without contacting the V-belt, and contacts three sides of each side to polish the V-belt. In addition, since a load is applied if the polishing die 4a is in constant contact with the polishing die 4a,
4b can be spaced from both side surfaces of B side 3.3 and brought into contact with each other if necessary. Of course, the polishing dies 4a and 4b are allowed to swing around the main shaft 14.

Furthermore, FIGS. 4 and 5 show another embodiment, in which, as shown in the figures, a rotating body is used as the polishing die 4 instead of the block body of the previous embodiment. Therefore, the polishing die 4 is rotatably supported around the rotating shaft 15, and the rotating shaft 15 is inclined with the same inclination angle as the inclination angle of the side surface 3 of the V-belt B. It is in line contact with 3. The polishing die 4 will rotate following the travel of the (bell) H, but if some resistance is provided to the rotation of the polishing die 4, slippage will occur between the polishing die 4 and the side surface 3. May exhibit an abrasive action. The rotating shaft 15 of the polishing die 4 is fixed to a block 16.
is attached to two main shafts 17.17 in a loose state, and a shaft 18 into which a coil spring 7 is inserted is passed between the two main shafts 17.
A spring force is applied to reduce the distance between a and 4b.

Therefore, the polishing dies 4a, 4b are always in contact with the side surface 3 of the V-belt 13, and can move in the direction of the main shaft 17, following the positional fluctuation of the V-belt (H) due to changes in the winding diameter on both V-pulleys. . Further, as another means for providing appropriate slippage between the polishing dies 4a, 4b and the side surface 3, it is also possible to take measures by tilting the rotating shaft 15 with respect to the running direction of the V-belt B as shown in FIG. It is possible. Furthermore, even when the blocks 2, 2 of belt B are spaced apart, smooth rotation can be provided.

Figure 7 shows the V-pulley 19.20, and the input and output side pulleys 19.20 change the distance between the two pulley pieces 19a, 19b and 20a, 20b during speed change, so that the ) H's winding radius increases and decreases sequentially, and in this case, one pulley piece 11a,
20a is fixed to a drive shaft 21.22, and the other pulley pieces 19b, 2Clb are movable.

Therefore, as the pulley pieces 18b and 20b move, the center (Y-Y) of the wrapped belt B moves in the x-x direction.

a polishing die 4a in contact with both sides 3.3 of the V-belt B;
4b must move simultaneously, so that the polishing die 4 is given a degree of freedom in the direction of the main axis 6.14.17.

On the other hand, ■ Bell) B is at the center (Y) as shown in Figure 8.
-Y) is not only moved in the x-x direction, but also the winding changes the inclination in the straight part due to the change in radius. Therefore, this device is installed at a position intermediate between both V-pulleys 19, 20, where the fluctuation is least.

As described above, the steel V-belt block contact surface polishing device of the present invention has polishing dies that are in sliding contact with the side surfaces of the V-belt attached to both side surfaces on which the V-belt runs, and the V-belt is moved in the width direction. It is made movable following the V-belt, and is also given rocking around the main axis so that it can sometimes follow the inclination of the straight portion of the V-belt, and the following effects can be obtained.

(Effects) (1) When the polishing device according to the present invention is incorporated into a non-permanent transmission device, the polishing die comes into sliding contact with the side surface of the V-belt, thereby removing additives and the like adhering to the side surface of the V-belt. By roughening the polished glossy surface by contact with
By increasing the coefficient of friction, and thus the frictional force, acting between the pulleys, it is possible to improve power transmission and to transmit a large amount of power.

(2) The improvement in the coefficient of friction controls the slippage between the V-belt and the pulley, which suppresses the generation of excess frictional heat, prevents deterioration of lubricating oil, and does not adversely affect the transmission.
Trouble caused by heat generation is eliminated.

(3) In addition, since the device is mounted so that it can move according to the fluctuations of the V-belt, it can contact the side of the V-belt at all times and when necessary, and performs the polishing action without being controlled by any special device. can be presented.

[Brief explanation of the drawing]

FIG. 1 shows a specific example of the polishing apparatus of the present invention, FIGS. f and 3 show other embodiments, and FIG.
Fig. 5 shows still another embodiment, Fig. 5 is a sectional view of Fig. 4, Fig. 6 shows a case where the polishing die forming a rotating body is tilted in the running direction of the V-belt, and Fig. , and FIG. 8 respectively show the fluctuating states of the V-belt wound around the V-pulley. A: Polishing device B: V-belt
... Band 2 ... Block 3 ...
・Side surface 4... Polishing die 5.13.18
・・Axis 6.14.17・・Main shaft 7・・・・
Coil spring 8...Washer 9...Inner surface! 0...Guide 11...End
12...Color 15...Rotation axis
16...Block 19.20...V pulley 21.22...Drive shaft 8th//-1 1st F Fig. 2 Fig. 3 Fig. 4 5th mountain R 6th

Claims (4)

[Claims] (1) In a steel V-belt that is wrapped around both pulleys in a continuously variable transmission to transmit power through continuously variable transmission, the side surface of the steel V-belt has an inner surface with the same inclination angle as the side surface inclination angle of the steel V-belt. Attach the polishing die and
A block contact surface polishing device for a steel V-belt, characterized in that the polishing die is mounted so as to be movable in the direction of the main shaft via a main shaft mounted perpendicularly to the direction in which the steel V-belt runs. (2) The steel V according to claim 1, which is equipped with a spring that acts to reduce the distance between the two polishing dies.
Belt block contact surface polishing device. (3) The block contact surface polishing device for a steel V-belt according to claim 1, wherein the distance between the two polishing dies is made larger than the width of the steel V-belt, and the main shaft itself is moved in the axial direction. (4) The polishing die according to claim 1, 2 or 3, wherein a rotating body rotatably supported on a rotating shaft attached at a predetermined angle is used as the polishing die. Steel V
Belt block contact surface polishing device.