WO2004069473A1 - 無段変速機の無端ベルト用金属リングの研磨方法及びその装置 - Google Patents
無段変速機の無端ベルト用金属リングの研磨方法及びその装置 Download PDFInfo
- Publication number
- WO2004069473A1 WO2004069473A1 PCT/JP2004/001331 JP2004001331W WO2004069473A1 WO 2004069473 A1 WO2004069473 A1 WO 2004069473A1 JP 2004001331 W JP2004001331 W JP 2004001331W WO 2004069473 A1 WO2004069473 A1 WO 2004069473A1
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- WO
- WIPO (PCT)
- Prior art keywords
- polishing
- metal ring
- holding
- brush
- ring
- Prior art date
Links
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B29/00—Machines or devices for polishing surfaces on work by means of tools made of soft or flexible material with or without the application of solid or liquid polishing agents
- B24B29/005—Machines or devices for polishing surfaces on work by means of tools made of soft or flexible material with or without the application of solid or liquid polishing agents using brushes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B29/00—Machines or devices for polishing surfaces on work by means of tools made of soft or flexible material with or without the application of solid or liquid polishing agents
- B24B29/02—Machines or devices for polishing surfaces on work by means of tools made of soft or flexible material with or without the application of solid or liquid polishing agents designed for particular workpieces
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B41/00—Component parts such as frames, beds, carriages, headstocks
- B24B41/005—Feeding or manipulating devices specially adapted to grinding machines
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B9/00—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16G—BELTS, CABLES, OR ROPES, PREDOMINANTLY USED FOR DRIVING PURPOSES; CHAINS; FITTINGS PREDOMINANTLY USED THEREFOR
- F16G5/00—V-belts, i.e. belts of tapered cross-section
- F16G5/16—V-belts, i.e. belts of tapered cross-section consisting of several parts
Definitions
- the present invention relates to a method and an apparatus for polishing a thin metal ring used for an endless belt of a continuously variable transmission.
- a belt in which a plurality of elements arranged in a ring shape and arranged in a stacked manner by stacking a plurality of metal rings is used.
- the metal ring constituting this kind of laminated ring is formed into an endless belt shape by cutting a cylindrical metal drum into a predetermined width by a thin disk-shaped grindstone. Since the metal ring cut from the cylindrical drum has burrs on the side edges, it is necessary to polish the burrs. In addition, even if the burr on the side edge of the metal ring is small, it is necessary to polish the side edge of the metal ring to finish the side edge into a highly accurate curved shape.
- This metal ring polishing method is called barrel polishing, in which a metal ring, which is a work, is mixed in a barrel filled with a grindstone called a media, and the metal ring rotates the barrel together with the media. In this way, the metal ring is agitated in the barrel together with the medium so that the medium comes into contact with the side edge of the metal ring and the side edge of the metal ring is polished.
- Japanese Patent Application Laid-Open No. 2002-248522 discloses a method of polishing a side edge of a metal ring with a grindstone.
- polishing with a grindstone has a disadvantage that the efficiency of the work is reduced because the shape of the side edge of the metal ring is affected by the shape of the grindstone, and frequent replacement of the grindstone is required.
- the present invention provides a metal ring polishing method and apparatus capable of polishing a side edge of a metal ring without performing barrel polishing or polishing with a grindstone.
- the purpose is to provide. Disclosure of the invention
- a method of the present invention is a method of polishing a thin metal cylinder ring used for an endless belt of a continuously variable transmission, comprising: a charging step of charging the metal ring; A first brush polishing step of polishing one end of the metal ring input in the input step with a polishing brush, and inverting the metal ring of which one edge has been polished in the first brush polishing step. A reversing step, a second brush polishing step of polishing the other end of the metal ring inverted by the reversing step with a polishing brush, and a metal having the other end polished by the second brush polishing step And a payout process for paying out a ring.
- the first brush polishing step is performed. Grind one end of the metal ring.
- the metal ring is inverted by the inversion step, and the other edge of the metal ring is polished by the second brush polishing step.
- the first double brush polishing step and the second brush polishing step since the side edge of the ⁇ JS ring is polished by the polishing brush, unlike the conventional barrel polishing, a grindstone adheres to the ring surface. Polishing can be performed with high accuracy without fear of polishing.
- the provision of the reversing step makes it possible to efficiently polish one edge of the metal ring and the edge of lfi.
- the metal ring is held in a substantially circular circle and rotated in the circumferential direction, and a ring having a larger diameter than the metal ring is formed.
- the rotating polishing brush is brought into contact with the rotating metal ring so as to traverse the edge of the rotating metal ring.
- the polishing brush crosses the rotating metal ring, the polishing brush rotates.
- At a predetermined angle of incidence with respect to the trajectory of the metal ring it enters the inside of the metal ring, passes between the inner periphery of the metal ring and the center of rotation of the metal ring, and has a distance of 1 C with respect to the trajectory of the metal ring. It is characterized in that it separates from the metal ring at a predetermined exit angle. .
- the incident angle and the declination angle are from 20 ° to 45 °.
- the polishing amount of the side edge of the metal ring is reduced, so that the speed of the polishing brush must be increased or the polishing time must be prolonged. If the angle of incidence is less than 20 °, the polishing brush also contacts the inner peripheral surface of the metal ring and is polished to the outer peripheral surface. On the other hand, when the incident angle and the exit angle exceed 45 °, only the top of the side edge of the metal ring is polished, and good chamfering cannot be performed. Therefore, the entry and exit angles of the polishing brush with respect to the metal ring are set at 20 ° to 4 °. By setting the angle to 5 °, favorable chamfering of the side edge of the metal ring can be performed.
- the metal ring charged in the charging step is formed by cutting a thin-plate cylindrical metal drum into a ring shape by a cutting step provided prior to the charging step.
- the metal drum be pushed and cut off with an angled cutting edge.
- the side edge of the metal ring becomes square in cross section. In order to do this, the cutting allowance must be increased. In the present invention, since the metal ring is cut off by a cutter having a mountain-shaped blade surface, the side edge of the metal ring is in a state in which the shape of the power cutter is transferred and chamfered. Therefore, the cutting allowance can be reduced as compared with the case where cutting is performed with a grindstone as in the related art. Further, in the first brush polishing step and the second brush polishing step of the method of the present invention, the load current value of a motor for rotating and driving the polishing brush when the polishing brush contacts the metal ring is determined. It is characterized in that the amount of cut into the metal ring of the polishing brush is increased or decreased so that the load current value is detected and the detected load current value falls within a predetermined range of the load current value.
- a load current value detected from a polishing brush motor as a substitute characteristic of a motor rotating shaft torque representing a polishing force for controlling a polishing shape.
- Increase or decrease the cutting depth of the polishing brush into the metal ring that is, when the polishing brush is rotating and abutting on the side edge of the metal ring to perform polishing, a load is applied to the motor of the polishing brush.
- the load on the motor is detected as the load current value of the motor.
- the cutting amount of the polishing brush into the metal ring is large.
- the load current value of the motor becomes large, and when the depth of cut is small, the load current value also becomes small.
- the polishing amount of the polishing brush into the metal ring is large, the polishing amount of the side edge of the metal ring by the polishing brush is large, and if the cutting amount is small, the polishing amount is small. Therefore, it can be confirmed that the polishing amount is large if the load current value of the motor is large, and that the polishing amount is small if the load current value of the motor is small. From this, a range of load current values (a predetermined range of load current values) in which a good polishing amount can be obtained can be determined in advance.
- the load current value of the motor decreases, and accordingly, by increasing the cutting amount of the polishing brush into the metal ring, even if the polishing brush is worn, the predetermined The polishing amount can be used.
- the predetermined The polishing amount can be used.
- by increasing or decreasing the cutting amount of the polishing brush into the metal ring so that the load current value of the motor is within a predetermined range set in advance a predetermined value can be obtained regardless of the wear state of the polishing brush. The amount of polishing can be obtained.
- the polishing brush and the metal ring are placed in a non-contact state. Measuring the first current value of the motor when the motor is driven to rotate; and a polishing amount when the edge of the metal ring is polished by contacting the polishing brush with the metal ring and the polishing amount. Measuring the second current value of the motor and calculating the correlation between the load current value and the amount of polishing using the increase in the second current value with respect to the first current value as the load current value. And a step of setting a predetermined range of load current value in each brush polishing step based on the correlation between the calculated load current value and the polishing amount.
- the load current value of the motor is the second current with respect to the first current value. It can be easily obtained from the increase in the flow value. Further, from the correlation between the load current value and the polishing amount, a range of the load current value when a predetermined polishing amount is obtained can be easily obtained. By setting the range of the load current value obtained in this manner before each of the brush polishing steps, the amount of cut into the metal ring of the polishing brush according to the load current value can be increased or decreased in each of the brush polishing steps. Can be performed accurately.
- the apparatus of the present invention is an apparatus for polishing a thin-plate cylindrical metal ring used for an endless belt of a continuously variable transmission, wherein the metal ring is detachably held by exposing one end edge thereof.
- a polishing brush that rotates while being in contact with the polishing pad.
- the apparatus of the present invention since the end of the metal ring is polished by the polishing brush, there is no possibility that a grindstone adheres to the ring surface unlike conventional barrel polishing, and highly accurate polishing can be efficiently performed. It can be carried out.
- the apparatus of the present invention includes a holding table that detachably holds the metal ring by exposing one end of the metal ring, an input unit that inputs the metal ring to the holding table, and a holding unit that holds the metal ring.
- First polishing means for polishing one end of the finished metal ring with a polishing brush, and inverting the metal ring whose one edge has been polished by the first polishing means;
- Reversing means for exposing and holding the other end of the metal ring, and second polishing means for reversing the metal ring held by the reversing means and holding the metal ring on the holding table with a polishing brush.
- Discharging means for discharging, from the holding table, a metal ring whose other edge is polished by the second polishing means.
- the holding table includes holding means for detachably holding the metal ring and rotating the metal ring in a circumferential direction, wherein the first polishing means and the second polishing means are A polishing brush which is formed in an annular shape with a diameter larger than that of the metal ring and rotates, and the polishing brush is brought into contact with the metal ring so as to cross an end of the metal ring rotated by the holding means. It is characterized by.
- the holding table includes a plurality of the holding units arranged at predetermined intervals on the same circumference
- the polishing brush includes: a holding unit on the holding table. Are formed so as to have a diameter that simultaneously abuts each metal ring held by the metal ring.
- a plurality of metal rings can be held on the holding table, and the plurality of metal rings on the holding table can be polished by one polishing brush. Efficiency can be dramatically improved.
- a plurality of the holding tables are arranged at predetermined intervals around a rotation axis of a turntable that intermittently rotates at a predetermined angle, and each of the holding tables is rotated by the turntable.
- the loading means, the first polishing means, the reversing means, the second polishing means, and the dispensing means are sequentially arranged from upstream to downstream along a rotation trajectory of the holding table.
- both ends of the metal ring can be polished by one rotation of the evening table, so that the work related to polishing can be performed efficiently, and the apparatus is compactly configured. Can be.
- a first turntable including a plurality of the holding tables at predetermined intervals around a rotation axis and intermittently rotating at predetermined angles, and a first turntable.
- a second turntable that is provided adjacent to the rotary table and includes a plurality of the holding tables at predetermined intervals around a rotation shaft and that rotates intermittently at predetermined angles.
- the charging means and the first polishing means are sequentially arranged from upstream to downstream along the rotation trajectory of each holding table to be rotated, and the rotation trajectory of each holding table rotated by the second turntable
- the second polishing means and the dispensing means are sequentially arranged from upstream to downstream along the axis, and the reversing means is provided on the first turntable at a position downstream of the first polishing means.
- one edge of the metal ring is polished during one rotation of the first turntable, and the other edge of the metal ring is polished during one rotation of the second turntable. Therefore, the work interval per turntable can be made relatively wide, and, for example, it is possible to improve the polishing accuracy of the metal ring by providing a plurality of first polishing means.
- the charging unit, the first polishing unit, the reversing unit, the second polishing unit, and the dispensing unit each include the holding table. Between one bull, next to each other An example in which a transfer means for transferring a metal ring from one of the matching holding tables to the other holding table is provided.
- the metal ring is removed from the one holding table when the metal ring is transferred from the one holding table to the other holding table by the transfer means, for example, the metal ring is removed.
- Other operations such as cleaning the holding table can be easily inserted.
- the charging unit, the first polishing unit, the reversing unit, the second polishing unit, and the dispensing unit may be arranged substantially linearly.
- the holding table is circulated along an endless transfer path that intermittently transfers every predetermined distance, and the holding table transferred by the transfer path is downstream from upstream of each stop position.
- the input means, the first polishing means, the reversing means, the second polishing means, and the dispensing means may be arranged in this order.
- the first and second polishing means are respectively a rough polishing means for polishing with a relatively coarse polishing brush, and the rough polishing means following the polishing by the rough polishing means.
- the first polishing means rough polishing, intermediate polishing, and finish polishing are sequentially performed, so that one edge of the metal ring can be polished with high precision. Also, in order, rough polishing, intermediate polishing, finishing Raising is performed so that the other edge of the metal ring can be polished with high precision.
- the holding table in the apparatus of the present invention is capable of holding a plurality of metal rings, and the loading means is provided at a terminal end of the transfer path for transferring the plurality of metal rings;
- a predetermined number of disc-shaped holding members are provided around the rotation axis of the holding member corresponding to the holding positions of the metal rings of the holding table, and are formed to have a larger diameter than the metal rings.
- the metal ring of the transport path When the metal ring of the transport path is loaded into the holding table by the loading means, first, the metal ring at the front end at the end of the transport path is placed on the lifting table. On the other hand, the holding member is located above the elevating table. At this time, the metal ring on the elevating table and the holding portion of the holding member face each other. Next, the elevating means As a result, the elevating table is raised, and the metal ring is set in the holding portion of the holding member. At this time, the metal ring is held in the housing by the press-contact holding means provided in the housing. Subsequently, the elevating table is lowered, and the metal ring at the front end at the end of the transport path is placed on the elevating table.
- the holding member is rotated by the rotation driving means until the unaccommodated accommodation section (that is, the accommodation section in which the metal ring is not accommodated) faces the metal ring on the elevating table.
- the metal ring is delivered to the storage section by raising the lifting table.
- the holding member is moved onto the holding table by the transfer means, and the press-contact holding means of each storage portion is released from the press-contact with each metal ring.
- the holding of each metal ring in the holding member is released, and each metal ring is simultaneously transferred onto the holding table.
- the movement of the holding member for transfer is performed.
- the press-contact holding means presses against the outer peripheral wall of the metal ring to hold the metal ring. Compared to, the structure can be simplified and compact.
- the charging means an even number of the holding portions are provided on the holding member corresponding to holding positions of the respective metal rings of the holding table, and the lifting table is any one of the pair of the holding members. It is preferable that a pair of metal rings be placed at a position corresponding to the storage section.
- a pair of rings is provided from the lifting table to the holding member. Since it is delivered one by one, the number of times of lifting and lowering of the lifting table and the number of times of stopping of the holding member can be reduced, and the efficiency can be improved.
- the rings are delivered one by one to the even numbered storage sections provided on the holding member, the two rows of rings can be transported linearly and the foremost ring is placed on the elevating table with two rows remaining.
- the transfer from the lifting table to the pair of storage sections can be performed efficiently without complicating the structure of the lifting table.
- the holding table includes holding means for detachably holding the metal ring and rotating the metal ring in a circumferential direction, and the holding means mounts the metal ring.
- a mounting table, a plurality of rails formed on the mounting table, extending from the axial center of the metal ring mounted on the mounting table toward the inner surface of the metal ring, and slidable along each rail A plurality of abutting members that can be abutted on the inner surface of the metal ring placed on the mounting table; and a metal ring of each abutting member that slides along each rail.
- Contact member driving means for making contact with and separating from the inner side surface of the metal ring, wherein the contact member driving means moves vertically along the axis of the metal ring placed on the mounting table.
- a free moving member, and connecting the moving member and each contact member Link means for bringing each contact member into contact with the inner surface of the metal ring when the moving member moves upward, and separating each contact member from the inner surface of the metal ring when the moving member moves downward;
- An urging means for urging the member upward, the urging force causing each contact member to abut on the inner peripheral surface of the metal ring via the link means, and moving against the urging force of the urging means.
- Holding means for moving the member downward and separating each contact member from the inner peripheral surface of the metal ring via the link means.
- the holding means a plurality of rails are provided on the mounting table, and a plurality of abutting members sliding along each rail abut against the inner surface of the metal ring.
- the metal ring can be held accurately.
- the holding means includes the contact member driving means, whereby the moving member is urged upward by the urging means, and each contact member is connected to the inner peripheral surface of the ring via the link means. As a result, the metal ring can be reliably maintained in a highly accurate holding state.
- the moving member When the metal ring held by the mounting table is removed from the mounting table, the moving member is moved downward by the holding release means. Thereby, the contact member is slid inward of the metal ring by the link means. In this way, by simply moving the moving member downward, the respective contact members are simultaneously separated from the inner surface of the metal ring, and the holding of the metal ring can be released very quickly. Moreover, the sliding of each contact member can be driven only by providing the link means between the moving member and each contact member, so that the structure is simple and the apparatus can be made compact. Can be. Similarly, when the metal ring is held on the unmounted mounting table, the contact members can be brought close to each other by moving the moving member downward by the holding release means. After placing the metal ring on the outside of the contact member, the urging force by the urging means is applied to the moving member, so that the metal ring can be held very quickly.
- the mounting table is provided in plural on the same circumference, and the holding releasing means is provided with another moving member movably provided in the vertical direction at the center position of the array circumference of each mounting table.
- Each contact member of the mounting table is simultaneously separated from the inner peripheral surface of the metal ring.
- the moving member of each mounting table is simultaneously moved downward via the connecting member. Even if a plurality of metal rings are provided, the metal ring can be held and released simultaneously on each mounting table, and the holding operation for the plurality of metal rings can be performed quickly and efficiently.
- the reversing device in the apparatus of the present invention includes: a ring holding member which releasably holds the metal ring polished by the first polishing means and is movable to a predetermined position; and the ring holding the metal ring.
- a ring holding hole for releasably holding the metal ring wherein the ring holding hole inserts the metal ring from one opening and detaches the metal ring from the other opening.
- the reversing device first holds the metal ring polished by the first brush polishing means by the ring holding member.
- the ring holding member is provided with a ring holding hole for accommodating and holding the metal ring. At this time, a metal ring is inserted into the ring holding hole from one of the openings. At this point, one edge of the metal ring, which has been polished by the first brush polishing means, is exposed upward, so that one opening facing the lower side of the ring holding hole has a metal ring polished. Inserted from one of the edges.
- the ring holding member holding the metal ring in this way is inverted by the moving means and moved to a predetermined position.
- the metal ring held by the ring holding member is turned together with the ring holding member and polished.
- the edge of 5 is turned downward.
- one opening of the ring holding hole that faces downward when the metal ring is inserted is turned upward, and at the same time, the other opening is turned downward.
- the metal ring is detached from the other opening of the ring holding hole facing downward.
- the polished one edge of the metal ring faces downward and is separated from the other opening of the ring holding hole, and the metal ring released from being held by the ring holding member has the other unpolished edge. Pointed upward.
- the ring holding member is provided with the ring holding hole penetrating in the axial direction of the metal ring, the metal ring is inserted from one opening of the ring holding hole, and the metal ring is inserted from the other opening. Since the ring is detached, the metal ring can be extremely quickly inverted just by inverting the ring holding member.
- the ring holding hole is formed to have a larger diameter than the metal ring, and the ring holding hole is pressed against the outer peripheral wall of the metal ring housed in the ring holding hole and presses the metal holding ring. It is preferable to provide a press-contact holding means for releasably holding the ring.
- the metal ring since the metal ring is pressed and held inside the ring holding hole, the metal ring can be held without obstructing the removal of the metal ring from each opening of the ring holding hole.
- the metal ring since the metal ring is held in the ring holding hole by pressure contact with the outer peripheral wall by the pressure contact holding means inside the ring holding hole, even if the metal ring is easily bent, the metal ring is almost deformed. It can be securely held without any trouble.
- the metal rings are polished while holding a plurality of metal rings in a predetermined arrangement state
- the ring holding member comprises: Polishing means and the second polishing means A plurality of the ring holding holes corresponding to the arrangement positions of the metal rings are provided.
- each ring holding hole can hold the metal ring while maintaining a predetermined arrangement state in the first brush polishing device and the second brush polishing device.
- the metal rings can be efficiently inverted while maintaining a predetermined arrangement state.
- a dressing unit for adjusting the tip of the polishing brush may be provided on the holding table positioned on the track of the polishing brush.
- the dressing section adjusts the bristle tips, and does not frequently remove and replace the polishing brush for dressing work.
- the tip of the polishing brush can be adjusted while working.
- a dressing portion for adjusting the tip of the polishing brush can be provided at a position in the holding means of the holding table in contact with the polishing brush.
- the dressing portion abuts on the polishing brush while rotating. Therefore, friction between the polishing brush and the dressing portion is relatively large, and the polishing brush can be efficiently removed in a short time when the polishing brush passes over the ring holding means. Hair tips can be evenly arranged. In this way, the rotating dressing portion can reliably cross the trajectory of the polishing brush and abut against the polishing brush, and even if the space for installing the dressing portion is small, the ring holding means can be used.
- FIG. 1 is an explanatory view showing a metal ring having both ends polished in the present embodiment
- FIG. 2 is an explanatory view schematically showing a polishing apparatus according to the first embodiment of the present invention
- FIG. FIG. 4 is an explanatory plan view showing the operation of the charging means
- FIG. 5 is an explanatory plan view of the holding table
- FIG. 6 is an explanatory vertical sectional view of the holding table
- FIG. 8 is an explanatory view showing the operation of the holding means of the holding table
- FIG. 8 is an explanatory view showing another example of the holding means of the holding table
- FIG. 1 is an explanatory view showing a metal ring having both ends polished in the present embodiment
- FIG. 2 is an explanatory view schematically showing a polishing apparatus according to the first embodiment of the present invention
- FIG. FIG. 4 is an explanatory plan view showing the operation of the charging means
- FIG. 5 is an explanatory plan view of the holding table
- FIG. 6 is an explanatory vertical sectional view
- FIG. 9 is an explanatory sectional view showing the polishing means
- FIG. FIG. 11 is an explanatory view schematically showing the operation
- FIG. 11 is an explanatory view showing a polishing state of the metal ring by the polishing brush
- FIG. 12 is an explanatory side view of the reversing means
- FIG. FIG. 14 is an explanatory view showing the operation of the reversing means
- FIG. 15 is a schematic view of the polishing apparatus of the second embodiment.
- FIG. 16 is an explanatory view schematically showing the polishing apparatus according to the third embodiment
- FIG. 17 is an explanatory view schematically showing the polishing apparatus according to the fourth embodiment
- FIG. 19 is an explanatory diagram showing the relationship between the trajectory of the ring and the polishing brush
- FIG. 19 is an explanatory diagram showing the relationship between the trajectory of the metal ring and the polishing brush
- FIG. 20 is an explanatory diagram showing the process of cutting the metal ring from the metal drum.
- 1 is an explanatory diagram showing a cut end in a state where a metal ring is cut out
- FIG. 2 2 is an explanatory diagram schematically showing the operation of a holding table and a polishing brush
- FIG. 23 is a polishing brush when polishing a metal ring.
- FIG. 24 is an explanatory diagram showing the polishing state of the metal ring by the polishing brush
- FIG. 24 is an explanatory diagram showing the polishing state of the metal ring by the polishing brush
- FIG. 25 is a diagram showing the relationship between the cutting amount of the polishing brush and the load current value of the motor, and FIG. 26.
- FIG. 4 is an explanatory diagram showing a polishing amount according to a cutting amount.
- the metal ring W is formed in a thin plate-like endless belt shape and is used for an endless belt of a continuously variable transmission.
- the cross-sectional shape is an enlarged view of Fig. 1. As shown in the figure, both edges are polished in a substantially arc shape.
- the polishing apparatus 1 includes a turntable 2 that transports a metal ring W, as shown in FIG.
- the turntable 2 is intermittently rotated around a column 3 and has a plurality of holding tables 4 (eight holding tables 4 in the present embodiment) at predetermined intervals on the periphery thereof.
- the holding table 4 holds a plurality of metal rings W (six metal rings W in the present embodiment) arranged in the same circumference.
- the turntable 2 rotates the predetermined angle after stopping the metal ring W on the holding table 4 for each of the eight stages A to H for a predetermined time, and carries the metal ring W between the stages A to H.
- the stage A located at the most upstream is an input / output stage, and the input / output stage A is provided with input means 5 and output means 6.
- a stage B adjacent to the input / output stage A is a first coarse polishing stage, and the first coarse polishing stage B is provided with first coarse polishing means 7.
- a stage C provided downstream of the first rough polishing stage B is a first intermediate polishing stage, and the first intermediate rough polishing stage C is provided with a first intermediate polishing means 8.
- a stage D provided downstream of the first intermediate polishing stage C is a first finish polishing stage, and the first finish rough polishing stage D includes first finish polishing means 9. Is provided.
- the first rough polishing means 7, the first intermediate polishing means 8, and the first finish polishing means 9 constitute a first polishing means of the present invention for polishing one edge of the metal ring W. .
- a stage E provided downstream of the first finish polishing stage D is a reversing stage, and the reversing stage E is provided with reversing means 10. Further, a stage F provided downstream of the reversing stage E is a second coarse polishing stage, and the second coarse polishing stage F has a second coarse polishing step. There are 9 steps 11.
- a stage G provided downstream of the second coarse polishing stage F is a second intermediate polishing stage, and the second intermediate coarse polishing stage G includes a second intermediate polishing means 12 Is provided.
- the stage H adjacent to the downstream of the second intermediate polishing stage G is a second finish polishing stage, and the second finish polishing stage H includes second finish polishing means 13. Is provided.
- the second rough polishing means 11, the second intermediate polishing means 12, and the second finish polishing means 13 serve as the second polishing means of the present invention for polishing the other end of the metal ring W. Make up.
- the loading means 5 includes a loading conveyor 14 for transporting a plurality of metal rings W in the loading direction, and the loading / unloading step while holding the metal ring W of the loading conveyor 14. And a loading transfer means 15 for transferring the metal ring W to the holding table 4 located at the position A.
- the loading transfer means 15 is a loading holding member 16 for holding a plurality of metal rings W in a state corresponding to a holding position of the metal ring W of the holding table 4, and the loading holding member 16 is loaded.
- the transfer arm 17 that moves from the transport conveyor 14 to the holding table 4 located at the loading / unloading stage A, and the horizontal swing and the vertical swing of the transfer arm 17 Arm driving means 18 for driving.
- the transfer arm 17 is provided with a structure for always keeping the loading holding member .16 in a horizontal state even when the horizontal swing and the vertical swing are performed. ing.
- the charging holding member 16 includes a plurality of holding holes 19 formed at predetermined intervals on the same circumference.
- the holding holes 19 are provided at six positions in the present embodiment, corresponding to the holding positions of the metal rings W on the holding table 4. Further, the inner diameter of each holding hole 19 is formed larger than the outer diameter of the metal ring W.
- the holding for charging The member 16 includes a plurality of cylinders 20 corresponding to the respective holding holes 19, and a piston rod 21 which is expanded and contracted by the respective cylinders 20 projects into the respective holding holes 19.
- the metal ring W accommodated in each holding hole 19 is pressed against the inner peripheral wall of each holding hole 19 by extension of the piston rod 21 and held in each holding hole 19.
- the loading holding member 16 is rotatably connected to the tip of the transfer arm 17 and includes a rotation motor 22 that rotates intermittently at a predetermined angle.
- an elevating table 23 is continuously provided at the end of the input / conveyor 14.
- the elevating table 23 holds a pair of metal rings W conveyed to the end of the input / conveyor 14 in two rows by the alignment unit 24 provided at the end of the input / conveyor 14. While being held, it is raised and lowered by lifting means (not shown).
- the elevating table 23 includes a holding protrusion 25 having a diameter smaller than the inner diameter of the metal ring W, and a sensor 26 for detecting the metal ring W held by the holding protrusion 25. When the metal ring W is detected, the lifting table 23 is raised by the lifting means. Further, as shown in FIG.
- a stopper 27 protruding and retracting from the bottom of the input / conveyor 14 is provided at the end of the input / conveyor 14.
- the stopper 27 locks the metal ring W located at the end of the charging conveyor 14 when the metal ring W is detected by the sensor 26, and stops the forward movement of the metal ring W.
- the loading holding member 16 is placed immediately above the elevating table 23. Position. At this time, as shown in FIG. 3, one of a pair of holding projections 25 of the lifting table 23 and one of a pair of holding holes 19 adjacent to each other among the holding holes 19 of the loading holding member 16. And face each other. Next, the metal ring W is held by the pair of holding protrusions 25. The lifting table 23 is raised by the detection of the sensor 26, and as shown in FIG. 4 (b), the metal ring W of the pair of holding projections 25 becomes the pair of holding holes 1 of the loading holding member 16. Housed in 9. At this time, as shown in Fig.
- the cylinder 20 of both holding holes 19 is actuated, and the piston rod 21 comes into contact with the metal ring W, and the metal ring W is held in the both holding holes 19. Then, the lifting table 23 is lowered. Thereafter, the charging holding member 16 is rotated by a predetermined angle by the rotating motor 22 and a pair of metal rings W is raised and lowered by the lifting table 23 shown in FIGS. 4 (a) and 4 (b). Is delivered. Similarly, the rotation of the loading holding member 16 and the transfer of the pair of metal rings W by the lifting and lowering of the lifting table 23 are performed, whereby all the holding holes 19 of the loading holding member 16 are transferred. The metal ring W is retained at the bottom.
- the transfer arm 17 swings horizontally toward the holding table 4 located at the loading / unloading stage A, and further, the transfer arm 17 moves downward. Then, the metal ring W is transferred from the charging holding member 16 to the holding table 4.
- the holding table 4 includes a plurality of (six) holding means 28 arranged at predetermined intervals on the same circumference corresponding to the holding positions of the metal rings W. I have it.
- the holding means 28 is configured to rotate independently while holding the metal ring W from the inside thereof. That is, as shown in FIG. A cylindrical rotating shaft 31 rotatably supported via a plurality of bearings 30 on a frame 29 of a holding table 4 fixed to the table 2, and an upper part of the rotating shaft 31; And a turntable 32 which is connected to the base and mounts the metal ring W thereon.
- the rotating shaft 31 is provided with a driven gear 33 at a lower end thereof, and the driven gear 33 is rotated by a driving motor 36 via an intermediate gear 34 and a driving gear 35.
- the drive motor 36 is provided in each of the polishing stages B, C, D, F, G, and H described above, and is not provided in the input / output stage A and the reversing stage E.
- the turntable 32 is provided with a plurality of swing members 38 that are swingably supported via a support shaft 37 in a radial manner.
- the swing member 38 is a turntable.
- a first extending portion 39 extending in the radial direction of 32, and a second extending portion 4 integrally connected to the first extending portion 39 and bent upward through the support shaft 37 to extend upward; 0 is provided.
- An abutment member 42 is connected to the upper end of the second extension portion 40 via a connection portion 41 (see FIG. 7).
- Each contact member 42 is slidably provided radially along each of a plurality of rails 32 a (see FIG. 7) formed on the turntable 32, and is rotated by the swing of the swing member 38.
- the outer surface of the table 32 slides outward and comes into contact with the inner peripheral surface of the metal ring W.
- the rocking member 38 constitutes the link means of the present invention.
- a first sliding shaft 43 slidable up and down along the axis of the rotating shaft 31 and the rotating base 32 is generally held.
- the first sliding shaft 43 is urged upward by a panel 44.
- a holding portion for holding the end of the first extension portion 39 of the swing member 38 is provided.
- a second sliding shaft 47 urged upward by a panel 46 is held at the center of each holding means 28.
- the second sliding shaft 47 is connected via a connecting member 48 provided at the lower end thereof. Are connected to the lower end of each first sliding shaft 43.
- each holding means 28 will be described.
- a pressing projection 49 provided at the center of the charging holding member 16 serves as the second sliding shaft 47.
- the second sliding shaft 47 slides downward.
- each first sliding shaft 43 slides downward via the connecting member 48.
- the holding portion 45 descends to push down the first extension portion 39 of each swing member 38.
- the plurality of metal rings W can be held by the respective contact members 42 in conjunction with the lowering and raising of the charging holding member 16, and the plurality of metal rings can be quickly and efficiently formed.
- the ring W can be held on the holding table 4.
- the contact member 42 has a relatively large sliding distance from the center of the turntable 32 toward the peripheral edge thereof.
- the turntable 3 2 It is necessary that the abutting members 42 gathered on the center side be relatively small. For this reason, when the large-diameter metal ring W is held, the interval between the contact members 42 becomes large, and the portion of the metal ring W located between the contact members 42 is deformed into a substantially linear shape. This state does not cause any particular problem when polishing, but instead of the contact member 42 of the present embodiment, as shown in FIG.
- the first contacting the inner surface of the small-diameter metal ring W1 is performed.
- a contact member 52 integrally provided with a contact portion 50 and a second contact portion 51 contacting the inner surface of the large-diameter metal ring W2 may be provided.
- the first coarse polishing means 7 is provided on a first coarse polishing stage B shown in FIG. 2, and is provided for each metal ring W held on a holding table 4 stopped on the first coarse polishing stage B. Polish one edge.
- the first rough polishing means 7 is capable of moving up and down along a rail 53 provided on a column 3 standing upright along the axis of the turntable 2 (see FIG. 2).
- a drive motor 59 that is driven to rotate via a belt 58.
- the lifting frame 54 is lowered by lifting means (not shown) when the turntable 2 stops, and is raised when the turntable 2 rotates.
- the brush head 56 holds a polishing brush 60 in which a nylon wire rod containing an abrasive is bundled and arranged in a circular shape.
- a polishing brush 60 one having a small number (coarse) is used for rough polishing.
- the circularly arranged abrasive brushes 60 hold the holding table 4 when rotated.
- the diameter dimension is set so as to simultaneously contact the upper metal rings.
- the polishing brush 60 traverses each metal ring W and abuts on one end of the metal ring W, and the polishing brush 60 By the rotation of 60 and the rotation of the metal ring W, polishing is performed over the entire circumference of one edge of the metal ring W. At this time, as shown in FIG. 11, the polishing brush 60 passes over one edge of the metal ring W and one edge of the metal ring W is polished well.
- the brush head 56 shown in FIG. 9 may be controlled by the driving mode 59 so as to alternately repeat forward rotation and reverse rotation. Specifically, after polishing the metal ring W for a predetermined time by rotating the polishing brush 60 clockwise, polishing is performed for a predetermined time by rotating the polishing brush 60 counterclockwise. By rotating the polishing brush 60 clockwise and counterclockwise in this way, the metal ring W can be evenly polished and the polishing brush 60 is prevented from being habituated. be able to.
- the first intermediate polishing means 8 and the first finish polishing means 9 differ only in the number (fineness) of the polishing brush 60, respectively. Same as means 7. That is, referring to FIG. 2, the polishing brush 60 of the first intermediate polishing means 8 is a polishing brush 60 having a higher number (finer) than the polishing brush 60 of the first coarse polishing means 7, As the polishing brush 60 of the first finishing polishing means 9, a polishing brush having a larger number (finer) than the polishing brush 60 of the first intermediate polishing means 8 is employed. In the present embodiment, specifically, the number of the polishing brush 60 of the first rough polishing means 7 is # 46, and the number of the polishing brush 60 of the first intermediate polishing means 8 is # 12. 0, the count of the polishing brush 60 of the first finish polishing means 9 is # 320.
- the reversing means 10 is provided on the reversing stage E, separates the metal rings W from the holding table 4 located on the reversing stage E, inverts the metal rings W, and holds the inverted metal rings W on the holding table 4 again. Things. That is, the reversing means 10 includes a reversing holding member 62 that holds each metal ring W on the holding table 4 at once, a supporting member 62, and the reversing holding member 62. A reversing arm 63 for reversing the metal ring W through the arm, and arm driving means 64 for driving the reversing arm 63 horizontally and vertically. As shown in FIG.
- the reversing arm 63 supports the disc-shaped reversing holding member 62 so as to be reversible, and includes a reversing drive motor 65 for reversing the reversing holding member 62.
- the inversion holding member 62 has a plurality of holding holes 66 formed at predetermined intervals on the same circumference.
- the holding holes 66 are provided at six positions corresponding to the holding positions of the metal rings W on the holding table 4. Further, the inner diameter of each holding hole 66 is formed larger than the outer diameter of the metal ring W.
- the inversion holding member 62 includes a plurality of plungers 67 corresponding to the holding holes 66.
- each holding hole 66 The metal ring W accommodated in each holding hole 66 is held by the plunger 67 from the outer periphery thereof. Further, on the front and back of the center portion of the reversing holding member 62, a pressing force for pushing down the second sliding shaft 47 (see FIG. 6) provided on the holding means 28 of the holding table 4 is provided. Protrusions 68 are provided.
- the reversing means 10 is provided with a cleaning means 69 connected thereto.
- the cleaning means 69 includes a support arm 70 connected to the reversing arm 63, and a plurality of cleaning nozzles 71 provided at the tip of the support arm 70.
- Each of the washing nozzles 7 1 has a reversing arm 6 3 of the reversing means 10 oscillating in the horizontal direction, and from above the holding table 4 to the outside of the holding table 4. When the metal ring W is moved, the metal ring W is exposed on the holding table 4 to remove the polishing debris and the like attached to the holding table 4.
- each holding hole 66 of the reversing holding member 62 corresponds to each metal ring W held on the holding table 4.
- Each metal ring W held on the holding table 4 is accommodated in the hole 66.
- the metal ring W is locked by the plurality of plungers 67 as shown in FIG. The metal ring is held in 6.
- the reversing holding member 62 is raised by the reversing arm 63 and moved horizontally from above the holding table 4 to the outside thereof.
- the reversing drive motor 65 shown in FIG. 4 (c) By driving the reversing drive motor 65 shown in FIG. As shown in FIG. 4 (c), the inversion holding member 62 is inverted. Thereby, the metal ring W in each holding hole 66 of the inversion holding member 62 is inverted.
- the holding table 4 that does not hold the metal ring W is cleaned as described above.
- the inverted holding member 62 for inverted is moved to a position above the holding table 4 by the inverted arm 63 and lowered.
- each holding means 28 of the holding table 4 holds the metal ring W whose other unpolished edge is exposed upward.
- the plurality of metal rings W can be extremely efficiently formed. Can be inverted.
- a second rough polishing means 11, a second intermediate polishing means 12, and a second finish polishing means 13 are provided downstream of the reversing means 10, as shown in FIG. 2, a second rough polishing means 11, a second intermediate polishing means 12, and a second finish polishing means 13 are provided downstream of the reversing means 10, as shown in FIG. 2, a second rough polishing means 11, a second intermediate polishing means 12, and a second finish polishing means 13 are provided. Since these polishing means 11, 12, 13 have the same configuration as the above-mentioned first rough polishing means 7, first intermediate polishing means 8, and first finish polishing means 9, the description thereof will be omitted. Is omitted.
- the dispensing means 6 is held by a dispensing conveyor 72 which conveys a plurality of metal rings W in the dispensing direction, and a holding table 4 which is located on the loading / discharging stage A. And a pay-out transfer means 73 for holding and transferring the metal ring W to the start end of the pay-out conveyor 72.
- the dispensing transfer means 73 includes a dispensing holding member 74 for holding a plurality of metal rings W in a state corresponding to the holding position of the metal ring W on the holding table 4, and the dispensing holding member 74.
- the transfer arm 75 that moves from the holding table 4 located on the delivery stage A to the delivery conveyor 72, and the horizontal swing and the vertical swing of the transfer arm 75 are driven. Arm driving means 76.
- the transfer arm 75 has a structure that always keeps the payout holding member 74 in a horizontal state even when the horizontal swing and the upward and downward swing are performed. I have.
- the payout holding member 74 has the same configuration as the charging holding member 16 shown in FIG.
- the holding member for payout 74 is non-rotatably connected to the tip of the transfer arm 75.
- the dispensing means 6 is provided with cleaning means 77 connected in series.
- the cleaning means 77 includes a support arm 78 connected to the transfer arm 75, and a plurality of cleaning nozzles 79 provided at the tip of the support arm 78.
- the transfer arm 75 of the dispensing means 6 swings in the horizontal direction, and the dispensing holding member 74 is moved from above the holding table 4 onto the dispensing conveyer 72. When it is moved, it faces on the holding table 4 and the metal ring W is removed.
- the holding means positioned at the charging / discharging stage A of the evening table 2 by the charging means 5 is used.
- the metal ring W is charged into Table 4 (charging process).
- the metal ring W is held on the holding table 4 with one end thereof facing upward.
- the first rough polishing means 7 causes one of the metal rings W to move.
- the ends are roughly polished by a polishing brush 60.
- first intermediate polishing stage C intermediate polishing is performed by the polishing brush 60 of the first intermediate polishing means 8, and in the first finish polishing stage D, the first finish polishing means 9 is used. Finish polishing is performed by the first polishing brush 60 (first brush polishing step).
- the metal ring W is reversed by the reversing means 10 (reversing step). .
- the metal ring W is held on the holding table 4 with the other end thereof facing upward.
- the metal brush W of the second coarse polishing means 11 The other end is roughly polished.
- the brush polishing of the other edge of the metal ring W is completed (second brush polishing step).
- a polishing apparatus 80 includes a first turntable 81 and a second turntable 81 provided next to the first turntable 81. And 2.
- the first turntable 81 and the second evening table 82 have the same configuration as the evening table 2 of the first embodiment, and the first turntable 81 and the second evening table 82 have the same structure.
- the holding table 4 and the holding means 28 provided in the turntable 82 have the same configuration as that of the above-described first embodiment.
- the same reference numerals in the drawings denote the same parts, and a description thereof will be omitted.
- first turntable 81 a first brush polishing step for polishing one edge of the metal ring W is performed, and in the second turntable 82, the other edge of the metal ring W is removed.
- a second brush polishing step for polishing is performed.
- the first turntable 81 intermittently rotates with the eight stages A1, B1, B2, C1, C2, D, E1, and I1 as stop positions.
- the eight stages A 1, B 1, B 2, C 1, C 2, D, E 1, and II of the first turntable 81 are in this order, the input stage A 1, the brush normal rotation rough polishing stage B 1, and the brush The reverse rough polishing stage B2, the brush normal rotation middle polishing stage C1, the brush reverse rotation intermediate polishing stage C2, the finish polishing stage D, the 'dispensing (reversal) stage El, and the cleaning stage I1.
- a charging means is provided on the charging stage A 1.
- the brush coarse forward polishing stage B1 and the brush reverse coarse polishing stage B2 are each provided with first coarse polishing means having the same configuration.
- a first intermediate polishing means having the same configuration is provided for each of the brush normal rotation intermediate polishing stage C 1 and the brush reverse rotation intermediate polishing stage C 2.
- the finish polishing stage D is provided with a first finish polishing means
- the cleaning stage I 1 is provided with a cleaning means.
- the second turntable 82 rotates intermittently with the eight stages E2, F1, F2, G1, G2, H, A2, and I2 as stop positions.
- Eight stages E 2, F 1, F 2, G 1, G 2, H, A 2, and 12 in the second turntable 82 are put in order (reversed) stage E 2, brush forward rotation, rough polishing The stage Fl, the brush reverse rough polishing stage F2, the brush forward intermediate polishing stage Gl, the brush reverse intermediate polishing stage G2, the finish polishing stage 11, the dispensing stage A2, and the cleaning stage I2.
- a reversing means is provided between the payout stage E 1 in the first turntable 81 and the input stage E2 in the second turntable 82.
- the brush forward rotation coarse polishing stages B 1, F 1 and the brush reverse rotation coarse polishing stages B 2, F 2 have the same polishing means, but the rotation direction of the polishing brush 60. The opposite is different. By doing so, the contact direction of the polishing brush 60 with respect to the metal ring W is not deviated to one side; polishing can be performed with high precision. Similarly, the brush forward rotation intermediate polishing stages C1 and G1 and the brush reverse rotation intermediate polishing stages C2 and G2 can perform high-precision polishing because the rotation direction of the polishing brush 60 is different. In addition, in the cleaning stages I 1 and I 2, since the metal ring W is not held on the holding table 4, the holding table 4 can be washed to reliably remove polishing debris and the like.
- the polishing apparatus 80 of the second embodiment by providing the first evening table 81 and the second turntable 82, the cleaning stages I1, 12 and the like are provided. A plurality of stages can be additionally provided, so that the metal ring W can be polished with higher accuracy.
- a third embodiment of the present invention will be described with reference to FIG.
- the components already described in the first embodiment are denoted by the same reference numerals in FIG.
- the polishing apparatus 83 of the third embodiment seven stages B to H are arranged in a substantially straight line without using the turntable 2 as shown in FIG.
- First coarse polishing stage B has first coarse polishing means 7
- first intermediate polishing stage C has first intermediate polishing means 8
- first finish polishing stage D has first coarse polishing means 8. Finish polishing means 9 is provided.
- the reversing stage E is provided with reversing means 10. Further, the second coarse polishing stage F has the second coarse polishing means 11, the second intermediate polishing stage G has the second intermediate polishing means 12, and the second finish polishing stage H has the second coarse polishing means H. The second finish polishing means 13 is provided.
- Each of the stages B to H is provided with a holding table 4 and holding means 28 (see FIGS. 5 and 6) each having the same configuration as that shown in the first embodiment.
- a transfer means 84 for transferring the metal ring W from one of the adjacent holding tables 4 to the other of the holding tables 4 is provided between the holding tables 4.
- a charging conveyor 14 On the upstream side of the first coarse polishing stage B, a charging conveyor 14 is provided, and between the charging conveyor 14 and the first coarse polishing stage B, a charging means 5 is provided.
- a delivery conveyor 72 is provided downstream of the second finish polishing stage H, and a delivery means 6 is provided between the second finish polishing stage H and the delivery conveyor 72.
- Each transfer means 84 has the same configuration as the discharge means 6.
- the stages B to H are arranged in a substantially straight line, the input and output stages A such as the turntable 2 of the polishing apparatus 1 of the first embodiment are used. Can be eliminated.
- the transfer means 84 allows the transfer from the one holding table 4 to the other holding table. Since the metal ring W is removed from one of the holding tables 4 when the metal ring W is transferred to 4, the metal ring W is removed by equipping each transfer means 84 with a washing nozzle 85. Cleaning work of the removed holding table 4 and the polished metal ring W can be easily inserted.
- the polishing apparatus 86 of the fourth embodiment is provided with an endless transfer conveyor 87 instead of the turntable 2, and its operation is the same as that of the durntable 2. That is, the transfer conveyor 87 intermittently transfers the plurality of holding tables 4 at a predetermined distance interval along a substantially elliptical orbit.
- each of the stages B, C, and D where the first brush polishing step is performed and each of the stages F, G and H where the second brush polishing step is performed are arranged in parallel.
- a reversing stage E is provided at a turning position between the finishing polishing stage D and the second rough polishing stage F. This eliminates the need for the transfer means 84 as in the polishing apparatus 83 of the third embodiment described above, and can simplify the apparatus configuration.
- the polishing apparatus 86 of the fourth embodiment as shown in FIG. 17, a metal ring W is held between a second finish polishing stage H and a first rough polishing stage B. Unsupported holding table 4 is transported. At this time, although not shown, the holding table 4 can be cleaned.
- the first brush polishing means is constituted by the first rough polishing means 7, the first intermediate polishing means 8, and the first finish polishing means 9, and the second brush polishing means
- the polishing means is constituted by the second coarse polishing means 11, the second intermediate polishing means 12, and the '2nd finish polishing means 13, the polishing means is not limited to this.
- the first brush polishing hand The step may be constituted by the first rough polishing means 7 and the first finish polishing means 9, and the second brush polishing means may be constituted by the second coarse polishing means 11 and the second finish polishing means 13. Good.
- the polishing brush 60 abuts across each metal ring W, and the rotation of the polishing brush 60 and the rotation of the metal ring W cause the metal ring W to rotate. Polishing is performed over the entire periphery of one of the edges. At this time, it is preferable that both the incident angle and the exit angle of the polishing brush 60 with respect to the metal ring W be 20 ° to 45 °, and in each of the above-described embodiments, exactly as shown in FIG. The incident angle ⁇ and the exit angle ⁇ are set to about 36 °.
- the incident angle ⁇ and the exit angle 0 of the polishing brush 60 with respect to the metal ring W are less than 20 ° and more than 45 °. Will be described.
- the metal ring W does not contact the entire polishing brush 60.
- the edge of the metal ring W is insufficiently polished.
- the metal ring W penetrates into the polishing brush 60 and the polishing brush 60 comes into contact with the inner and outer peripheral surfaces of the metal ring W, so that the inner and outer peripheral surfaces of the metal ring W are not damaged.
- polishing brush 60 s having a small outer diameter As shown by a virtual line in FIG. 19 (a).
- the polishing brush 60 s having a small outer diameter has a large amount of bending, and the polishing may be insufficient.
- the polishing brush 60 when the angle of incidence ⁇ and the exit angle 0 of the polishing brush 60 with respect to the metal ring W exceed 45 °, the polishing brush 60 is in contact with the metal ring W. The time becomes extremely small, and polishing is also insufficient. For this reason, the polishing brush for the metal ring W 6 0
- the incident angle ⁇ and the exit angle are set to 20 to 45 °, and in each of the above-described embodiments, the angle is set to about 36 °.
- the shape of the edge of the metal ring W before the polishing is chamfered in advance in order to perform the polishing of the metal ring W more efficiently. That is, in each embodiment, as shown in FIG. 20, when cutting the metal ring W from the metal drum X, the cutting device 88 is used so that the cutting edge of the metal ring W has a chamfered shape. Has adopted. As shown schematically in FIG.
- the cutting device 88 includes a holding member 89 for holding the metal drum X in a cylindrical shape, a disc-shaped cutter 90 having a mountain-shaped blade surface, and A cutter holder 91 for rotatably holding the cutter 90 and a receptacle 92 for abutting on the outer peripheral surface of the metal drum X and rotating with the rotation of the metal drum X are provided.
- the receiving roller 92 is made of a synthetic resin having elasticity, and presses the metal drum X from the outer periphery when the cutter 90 pushes the metal drum X from the inner periphery.
- a metal ring W is cut out of the metal drum X by a cutter 90.
- the cutter holding unit 91 puts the cut 90 on the inner peripheral surface of the metal drum X. Press on.
- the outer peripheral surface of the metal drum X against which the cutter 90 is pressed is held by the receiving roller 92. Since the receiving roller 92 is made of synthetic resin having elasticity, the metal drum X pushed up by the cutter 90 is pushed off by the cutter 90 while bending toward the receiving roller 92 side. As a result, a metal ring W whose cut edge is chamfered as shown in FIG.
- the cutter 90 is pressed from the inner peripheral surface side of the metal drum X.
- the metal drum X is held on the inner peripheral surface side, Even if the metal ring W is cut by pressing a cutter from the outer peripheral surface side of the metal drum X, a chamfered cut edge can be formed.
- the holding table 4 can be provided with a first dressing portion 93 between the holding means 28.
- a plurality of first dressing portions 93 are provided along the trajectory of the polishing brush 60, and are formed of a grindstone that comes into contact with the tip of the rotating polishing brush 60.
- a second dressing portion 94 can be provided on the upper surface of each contact member 42 of each holding means 28.
- the second dressing portion 94 is formed by bonding a grindstone to the upper surface of each contact member 42. Since the holding means 28 rotates, the second dressing portion 94 provided on the upper surface of each contact member 42 also rotates. As a result, as shown in the figure, even if the second dressing portion 94 is elongated in the vicinity of the inside of the metal ring W of each contact member 42, the rotating second dressing portion 94 must be a polishing brush. Abut the polishing brush 60 across the 60 orbit.
- the rotating polishing brush 60 was in contact with the first dressing portion 93 provided on its track, and the tips of the polishing brush 60 were irregular. In this case, the hair is shaved by the first dressing portion 93 to prepare the hair tips.
- the rotating polishing brush 60 is provided with a second member provided on each contact member 42 of the holding means 28 which holds and rotates the metal ring W. Touches dressing part 94.
- the second dressing portion 94 rotates along with the metal ring W integrally with each contact member 42, so as to cross the track of the polishing brush 60 and contact the polishing brush 60.
- the second dressing portion 94 rotates and comes into contact with the polishing brush 60, so that the friction between the second dressing portion 94 and the polishing brush 60 is large. Yes, the tip of the polishing brush 60 can be efficiently and reliably adjusted within a short time when the second dressing part 94 passes over the holding means 28.
- the dressing for polishing the metal ring W with the polishing brush 60 and simultaneously adjusting the tips of the polishing brush 60 is performed.
- the maintenance work such as dressing work and removal of the polishing brush 60 is not only reduced, but also the tips of the polishing brush 60 are aligned and evenly contact the metal ring W. Polishing accuracy can be improved.
- the tip of the polishing brush 60 can be sufficiently adjusted.
- the polishing means 7 has a load current value of a motor 59 as shown in FIG. And a lift control means 96 for controlling the lifting / lowering means in accordance with the current value detected by the load current value detection means 95.
- the operation of the load current value detecting means 95 and the elevation control means 96 will be described below.
- the respective holding means 28 are rotated, whereby the respective metal rings W Rotates.
- the brush head 56 is rotated by the drive of the motor 59 (see FIG. 9), and the polishing means 7 is lowered, so that the polishing is performed when the polishing brush 60 has a predetermined cutting amount with respect to the metal ring W.
- Fix means 7. As a result, as shown in FIG. 24, the polishing brush 60 comes into contact with one side edge of the metal ring W, and the polishing brush 60 rides over one edge of the metal ring W and Is polished.
- the load current value of the motor 59 changes according to the wear of the polishing brush 60. Since the change in the load current value is detected by the load current value detection means 95, the elevation control means 96 is set so that the detected load current value becomes a load current value in a predetermined range set in advance. As a result, the brush head 56 is lowered via the lifting / lowering means, whereby the cutting amount is controlled to be constant.
- reference numeral 56a denotes a support plate for supporting the tip of the polishing brush 60, and the polishing brush 60 projecting downward from the support plate 56a has a predetermined projection amount. This provides the polishing brush 60 with appropriate rigidity and processing power.
- the brush head 56 is lowered so that the amount of protrusion of the polishing brush 60 becomes constant according to the wear of the polishing brush 60. Therefore, the amount of cut into the metal ring W by the polishing brush 60 is fixed.
- the load current value detection means 95 includes: a current value (first-current value) measured when the polishing brush 60 is not in contact with the metal ring W (during idling); The load current value is detected by calculating the difference from the current value (second current value) measured when the metal ring is in contact with the metal ring W (during polishing).
- the range of the load current value corresponding to the good polishing amount is stored in the elevation control means 96 based on the correlation between the load current value and the polishing amount calculated in advance.
- the correlation between the load current value and the polishing amount can be obtained as follows. That is, when the polishing brush 60 is rotating and abutting on the side edge of the metal ring W to perform polishing, a load is applied to the motor 59 of the polishing brush 60. The load applied to the motor 59 is detected by the load current value detecting means 95 as the load current value of the motor 59. At this time, As shown, the load current value I of the motor 59 increases when the cutting amount L of the polishing brush 60 into the metal ring W is large, and the load current value I also decreases when the cutting amount L is small.
- Fig. 26 (a) shows the shape of the side edge of the metal ring W immediately after being cut from the cylindrical metal drum (before polishing), as shown in Fig. 26 (b).
- the polishing amount 60 of the polishing brush 60 is cut into the metal ring W with a small amount of polishing, the polishing amount becomes small, and the side edge of the metal ring W is polished into a curved shape having a relatively large tip radius.
- the polishing amount is increased by increasing the cutting amount L of the polishing brush 60 into the metal ring W, the polishing amount increases, and the radius of the end of the side edge of the metal ring W is compared. Polished to a very small curved shape.
- the elevation control means 96 determines whether the load current value detected by the load current value detection means 95 is in a predetermined range I to I 2 (a range of load current values corresponding to a good polishing amount). monitors whether, when the load current value becomes larger than the upper range limit I 2 is increased the head 5 6 to the brush to reduce the depth of cut L, and a small load current value is higher than the range limit I 2 If it does, lower the brush head 56 to increase the cutting depth L.
- a predetermined range I to I 2 a range of load current values corresponding to a good polishing amount
- the brush head 56 is lowered and the cutting depth L is increased, and a favorable polishing depth is maintained. be able to. That is, when the polishing brush 60 is worn, the cutting amount L becomes small as shown in FIG. 26 (), so that the load current value of the motor 59 of the polishing brush 60 decreases. The load current value at this time is detected by the load current value detection means 95 and sent to the elevation control means 96. You. Since the elevation control means 96 lowers the brush head 56 in accordance with the decrease in the load current value, the depth of cut L increases and a good polishing amount can be obtained as shown in FIG.
- the lower limit position of the brush head 56 is set.
- the cutting amount L is increased in accordance with the load current value detected by the load current value detection means 95, when the polishing brush 60 is extremely worn, the lower limit of the brush head 56 is reduced.
- the position exceeds the position, it is possible to easily determine that the wear of the polishing brush 60 is excessive and the polishing capability of the polishing brush 60 is extremely reduced, and it is time to replace the polishing brush 60.
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/544,985 US7413496B2 (en) | 2003-02-10 | 2004-02-09 | Method and device for polishing endless belt metal rings for continuously variable transmission |
EP04709341.4A EP1598146B1 (en) | 2003-02-10 | 2004-02-09 | Method and device for polishing endless belt metal rings for continuously variable transmission |
Applications Claiming Priority (14)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003032248A JP4398160B2 (ja) | 2003-02-10 | 2003-02-10 | 無端状金属ベルト用金属リングの加工方法及び加工装置 |
JP2003-032248 | 2003-02-10 | ||
JP2003-186565 | 2003-06-30 | ||
JP2003-186564 | 2003-06-30 | ||
JP2003186565A JP2005021995A (ja) | 2003-06-30 | 2003-06-30 | 金属リングのブラシ研磨装置 |
JP2003-186561 | 2003-06-30 | ||
JP2003-186562 | 2003-06-30 | ||
JP2003186563A JP2005021993A (ja) | 2003-06-30 | 2003-06-30 | 金属リングの反転装置 |
JP2003-186563 | 2003-06-30 | ||
JP2003186562A JP4291058B2 (ja) | 2003-06-30 | 2003-06-30 | 金属リングの投入装置 |
JP2003186561A JP4021379B2 (ja) | 2003-06-30 | 2003-06-30 | リングの保持装置 |
JP2003186564A JP3977781B2 (ja) | 2003-06-30 | 2003-06-30 | 無段変速機の無端ベルト用金属リングの研磨方法及びその装置 |
JP2003-415392 | 2003-12-12 | ||
JP2003415392A JP4440621B2 (ja) | 2003-12-12 | 2003-12-12 | 無段変速機の無端ベルト用金属リングの研磨方法及びその装置 |
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US (1) | US7413496B2 (ja) |
EP (1) | EP1598146B1 (ja) |
WO (1) | WO2004069473A1 (ja) |
Cited By (2)
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EP1548325A3 (en) * | 2003-12-26 | 2005-09-07 | HONDA MOTOR CO., Ltd. | Continuously variable transmission metal belt, process for producing metal ring, and process for measuring shape of metal ring |
CN105171602A (zh) * | 2015-10-22 | 2015-12-23 | 南京铹锘机电有限公司 | 用于磨削定子磁瓦的固定套 |
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WO2009036584A1 (de) * | 2007-09-20 | 2009-03-26 | Maschinenfabrik Rieter Ag | Schleifgerät für garnituren |
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JP2011152594A (ja) * | 2010-01-26 | 2011-08-11 | Honda Motor Co Ltd | 金属リングの研削加工方法 |
JP5031071B2 (ja) * | 2010-06-25 | 2012-09-19 | 本田技研工業株式会社 | 無段変速機用金属ベルトの金属リングの製造方法および無段変速機用金属ベルトの金属リングの形状測定方法 |
JP5619559B2 (ja) * | 2010-10-12 | 2014-11-05 | 株式会社ディスコ | 加工装置 |
US9950404B1 (en) | 2012-03-29 | 2018-04-24 | Alta Devices, Inc. | High throughput polishing system for workpieces |
JP6273818B2 (ja) * | 2013-12-13 | 2018-02-07 | アイシン精機株式会社 | 研磨用ブラシ及びそれを用いた工作機械 |
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EP1548325A3 (en) * | 2003-12-26 | 2005-09-07 | HONDA MOTOR CO., Ltd. | Continuously variable transmission metal belt, process for producing metal ring, and process for measuring shape of metal ring |
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CN105171602A (zh) * | 2015-10-22 | 2015-12-23 | 南京铹锘机电有限公司 | 用于磨削定子磁瓦的固定套 |
Also Published As
Publication number | Publication date |
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US20060211343A1 (en) | 2006-09-21 |
EP1598146A4 (en) | 2008-10-15 |
EP1598146B1 (en) | 2013-09-18 |
EP1598146A1 (en) | 2005-11-23 |
US7413496B2 (en) | 2008-08-19 |
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