JPS62297052A - V-shaped pulley inner wall surface polishing device in variable transmission - Google Patents

Abstract

PURPOSE:To obtain the optimum contact state of the inclined inner wall surface of a V-shaped pulley by freely fitting the polishing member installation shafts in slidable ways at the both edge parts of a connecting rod and freely revolving the polishing members on the installation shafts. CONSTITUTION:A connecting rod 13 which is slidable in the direction crossing at right angles with the top edge part of a holding shaft 9 is arranged, and the polishing member installation shafts 17 and 17' are freely fitted in slidable ways at the both edges, and the polishing members 15 and 15' and 16 and 16' can be turned on the installation shafts 17 and 17'. Therefore, when the polishing members contact the inclined inner wall surfaces 3', 4', 5' and 6' of the V-shaped pulleys installed onto a main shaft 1 and a trailing shaft 2, the polishing members turn at the revolution speed lower than those of the V-shaped pulleys 3, 4, 5 and 6, and the inclined inner wall surfaces 3', 4', 5', and 6' can be polished with the difference of the relative turning speed. Therefore, with the lapse of operation time, the reduction of the friction coefficient between the inclined inner wall surfaces 3', 4', 5', and 6' and the both edge surfaces of the V-block of a chain belt 7 is prevented, and the optimum contact state can be obtained.

Description

[Detailed Description of the Invention] 3. Detailed Description of the Invention [Field of Industrial Application] The present invention always maintains good frictional contact between the inclined inner wall surface of the V-shaped pulley and the endless power transmission band in a variable transmission device. The present invention relates to an apparatus for polishing the inclined inner wall surface of the V-shaped pulley.

[Technical background of the invention]

Endless transmission bands used in conventional continuously variable transmissions are made of rubber or metal, and metal belts are used when heat resistance and durability are required.

Here, the metal belt is formed by connecting multiple rows of link members made of metal plates in a row, and by inserting and fitting pins between the link members in each row at each pinch, an endless chain is formed which is connected in a flexible manner. However, by installing this chain around a ■-shaped pulley and changing the distance between the opposing inclined inner walls of this ■-shaped pulley, power can be transmitted from the main drive shaft to the driven shaft in a stepless manner. However, when the link member constituting the chain is wound around the V-shaped pulley, a protrusion extends in the radial direction of the pulley, and an insertion hole is bored in the protrusion. A block (1) having an end surface that engages with the inclined inner wall surface of each of the (1) type pulleys is inserted into the inserted insertion hole, and both end surfaces of the (2) block are brought into contact with the inclined inner wall surfaces of the V-shaped pulley. Power was transmitted from the driving shaft to the driven shaft by the frictional force generated between them when they were brought into contact with each other.

In the conventional continuously variable transmission as described above, the V
There is a tendency for a conforming phenomenon to occur between the inclined inner wall surface of the type pulley and both end surfaces of the block as the machine is operated, resulting in a decrease in frictional force and a deterioration in transmission efficiency.

This may be due to the fact that the inclined inner wall surface of the above-mentioned ■ type pulley is polished by the V-block and becomes smooth, and begins to exhibit a so-called bright surface.Also, this kind of continuously variable transmission is usually used in lubricating oil. Therefore, it is thought that there is a substance in the lubricating oil that reduces the coefficient of friction, and this begins to adhere to the inclined inner wall surface of the ■-type pulley in the form of a film. An example of the material formed on the inner wall surface is a layer of molybdenum disulfide. The above-mentioned phenomenon begins to appear approximately 5 to 10 hours after the start of operation.

[Problem that the invention seeks to solve]

Under the above-mentioned technical background, conventionally, in anticipation of a deterioration in transmission efficiency, a gear having a diameter of 50)P was designed to be around 201P, assuming a state where the frictional force was reduced.

The present invention has been made in view of the above-mentioned current situation, and prevents the decrease in the coefficient of friction between the inclined inner wall surface of the ■-shaped pulley and both end surfaces of the ■ block with the passage of operating time, and The purpose is to achieve optimal contact between the inner wall surfaces.

[Means for solving problems]

In order to achieve the above object, the present invention provides:
In a variable transmission device that is provided with a type pulley and transmits power by winding an endless transmission band around the above-mentioned ■-type pulley, the drive shaft is parallel to the shaft and Equipped with a holding shaft that can move freely in the axial direction,
A connecting rod that is slidable in a direction perpendicular to the shaft is disposed at the tip of the holding shaft, and polishing members are provided at both ends for contacting and polishing the inclined inner wall surface of the V-shaped pulley. The abrasive member mounting is characterized in that the shaft is slidably loosely fitted into both ends of the connecting rod, and the abrasive member is rotatable on the shaft.

[Effect]

The present invention provides a holding shaft that is parallel to the shaft and movable in the axial direction from between the ■-shaped pulleys provided on the main driving shaft and the driven shaft, and is perpendicular to the shaft at the tip of the holding shaft. The polishing member is installed by installing a connecting rod that is slidable in the direction of Since it is slidably and loosely fitted to both ends of the connecting rod, when a predetermined period of time has elapsed after the start of operation, the holding shaft is raised or lowered, and both ends of the connecting rod that rises or lowers together with the holding shaft are rotatable. The abrasive member attachment is loosely fitted to the drive shaft or the driven shaft.
When the polishing member comes into contact with the inclined inner wall surface of the V-shaped boot, the polishing member rotates at a rotation speed slower than the rotation speed of the type pulley, and due to the difference in relative rotational speed, the polishing member Immediately after polishing is completed, the holding shaft is lowered or raised in the opposite direction, and the other inclined inner wall surface of the (2)-shaped pulley is polished in the same manner as described above. Immediately after polishing is completed, the holding shaft is returned to its original position, and the polishing member is separated from the inclined inner wall surface of the V-shaped pulley to return to normal operation.

〔Example〕

The present invention will be explained based on embodiments shown in the drawings.

1 is a main drive shaft, 2 is a driven shaft arranged parallel to the main drive shaft 1 and at a predetermined interval, 3 is a fixed pulley of a V-shaped pulley fixed to the main drive shaft 1, and 4 is a fixed pulley of the main drive shaft 1. The fixed boot I is slidably and loosely fitted onto the shaft 1 and rotates together with the main drive shaft 1.
A movable pulley of the ■ type pulley approaches and separates from 73, 5 is a fixed pulley fixed to the driven shaft 2, and 6 is the driven shaft 2.
The movable pulley is a V-shaped pulley that is slidably and loosely fitted into the shaft, rotates together with the driven shaft 5, and approaches and moves away from the fixed pulley 5.

Reference numeral 7 denotes an endless power transmission band, for example, a chain type belt, which is wound around V-shaped pulleys provided on the main drive shaft 1 and the driven shaft 2, and both end surfaces of the ■ block 8 of the chain type belt 7 are connected to the above-mentioned ■ type pulley. A pair of inclined inner wall surfaces 3', 4' and 5'
, 6' to transmit power.

9 is each V provided on the main drive shaft 1 and the driven shaft 2.
The shaft 1. The holding shaft 9 is disposed parallel to the holding shaft 2 and movable in the axial direction, and the holding shaft 9 is guided and supported by, for example, a bearing housing lO of a bearing device (not shown). A retainer 11 is fixed to the lower end of the retaining shaft 9,
A through hole 12 is formed in the retainer 11 in a direction perpendicular to the axial direction of the retaining shaft 9, and a connecting rod 13 is slidably fitted into the through hole 12. And the above-mentioned connecting rod 13
A through hole 14.14' is provided at both ends of the connecting rod 13 in a direction perpendicular to the axial direction of the connecting rod 13, and annular polishing members 15.15' and 16.16' are provided at both ends of the through hole 14.14'. For mounting the polishing member with the attached shaft 17.17'
．． 14' so as to be slidable in the vertical direction, for example, by spring biasing or the like. The aforementioned polishing member 15.15'
, 16°16' is the inclined inner wall surface 3' of the above-mentioned ■ type pulley.
, 4' and 5', 6' abrasive surfaces 18, 18'.
, 19.19', and the cross section is approximately trapezoidal. The distance and the distance between the abrasive members 16 and 16' are the same and are less than the width of the endless transmission band 7. And the abrasive members 15, 15' and 16
, 16, the abrasive member attachment is rotatable around a shaft 17, 17'. Therefore, during normal operation, the polishing members are attached to the fixed pulley 3.5 of the V-shaped pulley and the inclined inner wall surfaces 3', 5.5 of the movable pulleys 4, 6. '□.

4' and 6' and there is no problem in driving. In this state, for example, when the movable pulley 4 of the drive pulley 1 approaches the stationary pulley 3 side, the movable pulley collides with the polishing member 15, but the polishing member 15 engages with the inclined inner wall surface of the movable pulley 4. Furthermore, in the case of mounting the polishing member in which the member 15 is attached to the polishing surface, the connecting rod 13 into which the shaft 17 is loosely fitted is loosely fitted into the retainer 11, so that the above-mentioned collision is avoided. Polishing member 1
5 escapes along the inclined inner wall surface 4' of the movable pulley 4, and the abrasive member 15 does not interfere with the approach of the movable pulley 4 to the fixed pulley 3, and normal gear shifting is performed. be.

Further, the proximity of the movable pulley 4 of the main drive shaft 1 causes the movable pulley 6 of the driven shaft 2 to be separated from the fixed pulley 5, and the polishing member 16 attached to the other polishing member attachment shaft 17' of the connecting rod 13 .16' is also provided on the driven shaft 2■
There is no problem with the rotation of the mold pulley.

The sloping inner wall surface 3' of the square-shaped boob has been operated for 5 to 10 hours since the start of operation as described above.

If the transmission band 4', 5', 6' becomes compatible with the V-block of a chain type belt and exhibits a bright part, or if a layer of molybdenum disulfide or the like is formed, the holding shaft 9 may be damaged by an actuator (not shown), etc. With this rise, the retainer 11 and the connecting rod 13 loosely fitted into the retainer 11 also rise, and the polishing members 15, 15' and 16 rotatably loosely fitted to both ends of the connecting rod 13 are raised. One polishing member 15.16 of .16' is attached to the inclined inner wall surfaces 4' and 5 of the movable pulley 4 of the driving shaft l and the fixed pulley 5 of the driven shaft 2, respectively.
' and the polishing member 15 or 1 on the side that came into contact earlier
6, the connecting rod 13 is released to one side, and by rotation of the movable pulley 4 and fixed pulley 5, the polishing member 1 is removed.
5 and 16 also rotate, but there is a difference in their rotational speeds, and the difference in rotational speed polishes the respective inclined inner wall surfaces of the V-shaped pulley, and the polishing member is attached to the shaft 17. .17' is made slidable, and the polishing member 15
．． Since 15' and 16.16' are free to rotate, their polishing action is a soft polishing action, which is more than necessary.
There is no need to grind the inclined inner wall surface of the die boom. and,
When polishing is completed, the holding rod 9 is lowered and the inclined inner wall surfaces 3' and 6' of the fixed pulley 3 of the driving shaft 1 and the movable pulley 6 of the driven shaft 2 facing each other are polished by the polishing members 15' and 16'.
Make sure to polish it.

In any of the above cases, the polishing time is about several seconds to several tens of seconds, but the time may be set longer if necessary.

Immediately after polishing is completed, the holding shaft 9 is returned to its original state, and the polishing members 15, 15', 16, 16' are separated from the inclined inner wall surface of the V-shaped pulley to continue operating.

〔Effect of the invention〕

The present invention provides a holding shaft that is parallel to the shaft and movable in the axial direction between the V-shaped pulleys provided on the main driving shaft and the driven shaft, and that is perpendicular to the shaft at the tip of the holding shaft. To install the polishing member, a connecting rod that can be slid freely in the direction of the Since the connecting rod is loosely fitted to both ends of the connecting rod so that it can slide vertically, the holding shaft can be raised or lowered when a predetermined period of time has elapsed after the start of operation, and the connecting rod can be raised or lowered together with the holding shaft. To attach the polishing members that are rotatably loosely fitted to both ends of the shaft, one of the polishing members attached to both ends of the shaft is brought into contact with the inclined inner wall surface of the ■-shaped pulley provided on the main drive shaft or the driven shaft. The polishing member has a circumferential speed that is different from the rotation speed of the ■-type pulley. In other words, the polishing member that contacts the ■-type pulley has a short linear tangent, and the rotation speed near the outer periphery and center of the polishing member is slow. The polishing member polishes the inclined inner wall surface of the ■-shaped pulley due to the difference in relative rotational speed. The contact between the inner wall surface and the polishing member is a soft contact, and the inclined inner wall surface of the ■-shaped pulley is not polished more than necessary. After the polishing is completed, the holding shaft is lowered or raised in the opposite direction to polish the other opposing inclined inner wall surface of the V-shaped boob, which comes into contact with the endless transmission band.
This is to keep the inclined inner wall surface of the mold pulley always clean.

[Brief explanation of drawings]

The drawings show embodiments of the present invention, the first is a cross-sectional explanatory view showing before polishing, the second is an enlarged explanatory view of the polishing member, (a) is a cross-sectional view, (b) is a plan view, and the third is an explanatory view of an enlarged polishing member. The figure is an explanatory cross-sectional view showing the polishing state. l: Main drive shaft 2: Driven shaft 3.5: Fixed pulley 4, 6: Movable pulley 7: Endless transmission band 9: Holding shaft 13: Connection rods 15, 15', 16.16': Polishing members 17, 17
' : The abrasive member installation is the shaft patent applicant Honda Motor Co., Ltd. Daido Kogyo Co., Ltd.

Claims (1)

[Scope of Claims] A variable speed change in which a driving shaft and a driven shaft are provided with a V-shaped pulley having a pair of inclined wall surfaces that are close to and separated from each other, and an endless transmission band is wound around the V-shaped pulley to transmit power. In the device, a holding shaft that is parallel to the shaft and movable in the axial direction is disposed between the V-shaped pulleys provided on the driving shaft and the driven shaft, and a holding shaft that is movable in the axial direction is provided at the tip of the holding shaft. The polishing member mounting shaft is provided with a connecting rod that is slidable in orthogonal directions, and has polishing members attached to both ends of the V-shaped pulley for contacting and polishing the inclined inner wall surface of the V-shaped pulley. A device for polishing an inner wall surface of a V-type pulley in a variable transmission device, characterized in that the polishing member is loosely fitted to both ends of a connecting rod so as to be slidable in the vertical direction, and the polishing member is rotatable on the polishing member mounting shaft.