JP3677524B2 - Rim processing equipment - Google Patents

Description

[0001]
[Industrial application fields]
The present invention relates to a rim processing apparatus that can accurately process a rim by preventing the rim from being displaced during processing.
[0002]
[Prior art]
During the process of manufacturing a rim constituting an automobile wheel, there is a step of opening a valve hole for supplying air to a tire mounted on the rim.
FIG. 7A shows the rim 1 before this process is performed, and A is a processing portion where the valve hole is to be processed. Then, as shown in FIG. 7B, first, a seating process is performed to form the seating surface 1a. Next, the valve hole 1b is opened as shown in FIG. Here, the central axis of the seating surface 1a and the central axis of the valve hole 1b usually only allow an error of about 0.1 mm, and high precision is required for forming the seating surface 1a and the valve hole 1b. Next, as shown in a partially enlarged view of FIG. 7 (c), since there is often a burring t when the valve hole 1b is opened, chamfering is performed to remove the burring t as shown in FIG. 7 (d).
[0003]
FIG. 8 is a plan view showing a conventional processing apparatus for performing the process shown in FIG. In FIG. 8, N1 indicates the conveyance direction of the rim 1, and the pressing machine 3, the punching machine 4, and the chamfering operator 5 are sequentially arranged in a line along the conveyance direction N1. Reference numeral 2 denotes a positioning stage for the rim 1. The rim 1 put into the processing apparatus shown in FIG. 8 is first positioned by the positioning stage 2, and is passed to the seat pusher 3 as indicated by an arrow N2. The seat surface 1a is formed on the rim 1 after being processed. Next, as indicated by an arrow N3, the rim 1 is transferred from the seat pusher 3 to the punching machine 4 by delivery means (not shown), and a valve hole 1b is formed in the rim 1. Further, as shown by the arrow N4, the rim 1 is transferred to the chamfering worker 5 by the unillustrated delivery means, and the chamfering operator removes the burrs t using the chamfering machine 6 such as a grinder, and then moves to the arrow N5. As shown, the processed rim 1 is carried out to the next process.
[0004]
By the way, as shown in FIG. 7A, the rim 1 has a complicated shape with a large number of irregularities on the side surface, and a flat plate is bent into a cylindrical shape in the previous process, and butt welding is performed. Therefore, it is not a perfect circle, and there are variations in shape even with rims of the same type. Furthermore, the unevenness, the radius and the width of the side surface are different for different types. Therefore, it is very difficult to accurately position the rim 1.
[0005]
[Problems to be solved by the invention]
Here, in the conventional means shown in FIG. 8, during the delivery indicated by arrows N2 and N3, the delivery means from the positioning stage 2 to the delivery means, from the delivery means to the seat pusher 3, and from the seat pusher 3 to the delivery means. The rim 1 is delivered many times, such as from the drilling machine 4 to the drilling machine 4, and the rim 1 is likely to be displaced in the middle of the delivery, resulting in poor positional accuracy between the seating surface 1a and the valve hole 1b. Thus, there is a problem that it is difficult to improve the yield of rim processing.
Therefore, an object of the present invention is to provide a rim processing apparatus that can accurately form a seating surface and a valve hole.
[0006]
[Means for Solving the Problems]
The present invention relates to a rotary table that is driven by a drive unit and rotates in an index in a horizontal plane, and moves between an input stage, a countersink stage, a punching stage, a chamfering stage, and an extraction stage set in the horizontal plane, and an input stage And a dosing machine that positions the rim and delivers it to the rotary table, a seating machine that forms a seating surface on the rim and forms a seating surface on the rim, and a seating machine that moves on and off the drilling stage. A drilling machine that opens the valve hole in the rim coaxially with the surface, a chamfering machine that chamfers the valve hole to and from the chamfering stage, and a picking stage that receives the processed rim from the rotary table. A rim processing apparatus having a take-out machine, wherein the rotary table clamps the rim positioned at the input stage to the take-out stage. Holds the remains, comprising a clamper for releasing the clamp at fetch stage, turned machine, opening and closing symmetrically with respect to the rim, a pair of clamping which clamped the rim from the inner diameter side and outer diameter side of the rim A positioning unit having a claw and a clamping claw driving unit that opens and closes the clamping claw symmetrically is provided .
[0007]
[Action]
With the above configuration, the rim is positioned by the charging machine and clamped to the clamper provided on the rotary table at the charging stage. Then, as the rotary table rotates the index, the seat pusher forms a seating surface on the rim at the seat push stage, the hole punching machine opens the valve hole on the rim, the chamfering stage, The chamfering machine removes burrs and reaches the extraction stage. During this time, the rim is fixed at a predetermined position of the rotary table by a clamper and is rotated with an index together with the rotary table, so that accurate machining can be performed without causing positional deviation. Then, at the take-out stage, the rim is released from the clamper and is received by the take-out machine.
[0008]
【Example】
Next, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is an overall plan view of a rim processing apparatus according to an embodiment of the present invention. 100 is a rotary table that rotates index in the direction of the arrow θ, 200 is provided on an input stage (the rim 1 is at a position P1), the rim 1 is positioned and delivered to the rotary table 100, and 300 is a seating stage (rim 1). Is a seat pusher that moves back and forth to position P2) to form a seating surface 1a on the rim 1. Among these, 301 is a first base, 302 is a main body of a buckling machine slidably mounted on the first base 301 in the direction of arrow M1, and 303 is fixed to the rear part on the first base 301. A motor 304 is a feed nut connected to the rear portion of the presser body 302, and a feed screw 305 is screwed into the feed nut 304 and driven by the motor 303. Accordingly, when the motor 303 is operated, the presser body 302 can be moved in and out in the direction of the arrow M1. Reference numeral 306 denotes an auxiliary clamper that is pivotally supported by the pivotal support portion 307, opens and closes in the direction of the arrow α, and clamps the side portion of the rim 1 on the seat-holding stage from the side. Since a large load acts on the rim 1 at the time of the seat pressing process, the rim 1 is pressed by the auxiliary clamper 306 in addition to the clamper described later of the rotary table 100. Further, the auxiliary clamper 306 can be opened and closed in the direction of the arrow α, so that it is possible to cope with the case where the radius of the rim 1 is changed due to the change of the type of the rim 1.
[0009]
400 is a drilling machine that opens and closes the drilling stage (the rim 1 is at the position P3) and opens the valve hole 1b in the rim 1 coaxially with the seating surface 1a, and 500 is the chamfering stage (the rim 1 is at the position P4). It is a chamfering machine that chamfers the valve hole 1b by moving out and out. These punching machine 400 and chamfering machine 500 are also the same as the above-mentioned counter press machine 300, the second base 401, the third base 501, the punching machine main body 402, the chamfering machine main body 502, the motors 403 and 503, the feed. By having the nuts 404 and 504 and the feed screws 405 and 505 and operating the motors 403 and 503, the punching machine main body 402 and the chamfering machine main body 502 can be moved back and forth in the directions of arrows M2 and M3, respectively. The configurations of the main body 302, the puncher body 402, and the chamfering machine body 502 themselves are well-known and will not be described. Reference numeral 600 denotes a take-out machine that is provided on the take-out stage (the rim 1 is at the position P5) and receives the processed rim 1 from the rotary table 100.
[0010]
Next, the rotary table 100 will be described. 2 is a plan view of the rotary table 100, and FIG. 3 is a front view thereof. Of these, 101 is a support frame, 102 is a shaft support provided on the support frame 101, 103 is a shaft that is vertically supported by the shaft support 102, and 104 is an index rotation of the shaft 103 via a speed reducer 105. It is a motor. The motor 104 and the speed reducer 105 constitute a drive unit for the rotary table 100. Reference numeral 106 denotes a rotating plate that is pivotally attached to the upper portion of the shaft 103, and 107 to 111 are inverted L-shaped arms, which are arranged radially at an angle of 72 degrees, and the base ends of these arms 107 to 111. The part is fixed to the rotating plate 106 so as to surround the shaft 103. Reference numeral 112 denotes a cylinder fixed downward to the distal ends of the arms 107 to 111. The lower end of the rod 113 of the cylinder 112 is connected to a wide L-shaped bracket 114, and 115 is attached to both ends of the lower surface of the bracket 114. A presser plate that is fixed and is long in the radial direction of the rim 1 (see the hatched portion in FIG. 2). Reference numeral 116 denotes a receiving plate fixed to the upper surface of the rotating plate 106 so as to substantially face the holding plate 115. Further, 117 is a guide fixed vertically to the rising portions of the arms 107 to 111, and 118 is a slider fixed to the rising portion of the bracket 114 and slidably engaged with the guide 117. Therefore, when the cylinder 112 is operated, the bracket 114 and the presser plate 115 are moved up and down as shown by an arrow M4 in FIG. 3, and the edge of the rim 1 is moved vertically between the presser plate 115 and the receiving plate 116. It can be clamped or released. Further, since the presser plate 116 is formed long as described above, the rim 1 can be firmly clamped even if the radius of the rim 1 is changed (see also FIG. 4), and it is possible to cope with a change in the type of the rim 1.
[0011]
Next, the feeder 200 will be described. 4 is a plan view of the charging machine 200, and FIG. 5 is an enlarged side view of the positioning unit. Reference numerals 201 and 202 denote a pair of guide rails that extend toward the loading position of the rotary table 100 and are arranged in parallel. 203 is provided on both sides of the guide rails 201 and 202, and the edge of the rim 1 is mounted. And a roller that rolls and guides the rim 1. A cylinder 204 is connected to a positioning unit 210 described later, and moves the positioning unit 210 between the solid line position and the chain line position (position P1) in FIG.
[0012]
Now, referring also to FIG. 5, in the positioning unit 210, reference numeral 211 denotes a support plate guided to the guide rails 201 and 202 by a slider 212 provided on the lower surface. Reference numerals 213 and 214 denote shafts of the same diameter that are supported at right angles to the guide rails 201 and 202 at a predetermined interval on the support plate 211, and these shafts 213 and 214 sandwich the side portion of the rim 1 from the outside. The first clamping claw 215 to be clamped and the second clamping claw 216 to be clamped from the inside are respectively pivotally attached. Further, a first pinion 217 and a second pinion 218 made of the same gear are mounted on the shafts 213 and 214, and the first and second pinions 217 and 218 are screwed into the rack 219, 220 The rod 221 is connected to the lower part of the rack cage 219 to raise and lower the rack cage 219, and the cylinder 220 is fixed to the support plate 211. Therefore, when the cylinder 220 is operated to cause the rod 221 to protrude, the first and second clamping claws 215 and 216 can be opened as shown by the chain line, and conversely, when the rod 221 is immersed, the solid line shows. As described above, the first and second clamping claws 215 and 216 can be closed to clamp the side portion of the rim 1 from inside and outside. The cylinder 220, the rack cage 219, and the first and second pinions 217 and 218 constitute a clamping claw drive unit. Here, since the first and second pinions 217 and 218 are made of the same gear and are screwed into the same rack rod 219, the first and second pinching claws 215 and 216 must be in the center of the rack rod 219. The operation is completely symmetrical with respect to the axis, and the rim 1 is positioned on the central axis of the rack cage 219 (symmetric axis of the first and second clamping claws 215 and 216) regardless of the shape of the rim 1. Can do.
[0013]
Therefore, when the opposite side of the rotary table 100 of the rim 1 reaches between the first and second clamping claws 215 and 216 mounted on the roller 203 and opened as shown by the solid line in FIG. 5, the first and second clamping claws 215 and 216 are closed, and the side portion of the rim 1 is positioned on the central axis of the rack rod 219. Next, the cylinder 204 is operated to feed the positioning unit 210 and the rim 1 to the position of the chain line in FIG. 4, the cylinder 112 of the rotary table 100 is operated, and the press plate 115 and the receiving plate 116 are used to move the rim 1 to the rotary table 100 side. Clamp the edge. At this time, the first and second sandwiching claws 215 and 216 sandwich the opposite side portion of the presser plate 115 and are in a state of holding the clamp without interfering with the presser plate 115 and the like. The formed rim 1 can be clamped on the rotary table 100 side without causing a positional shift. When the delivery is completed, the cylinder 220 is operated, the rod 221 is projected, the first and second clamping claws 215 and 216 are opened, and the rod 205 of the cylinder 204 is retracted to bring the positioning unit into the solid line position in FIG. 210 is restored. Thereafter, as the rotary table 100 rotates in an index, the rim 1 is subjected to seating, drilling, and chamfering.
[0014]
Next, the unloader 600 will be described with reference to the side view of FIG. First, 601 is a horizontal roller for receiving the rim 1 that has reached the take-out stage (the rim 1 is at the position P5), 602 is a discharge roller provided so as to be inclined downward along the discharge direction M5, and 603 A horizontal plate 605 supported by the foot 602a is a vertical plate guided by a guide rod 604 provided in the horizontal plate 603 along the discharge direction M5. A horizontal cylinder 608 is connected to reciprocally move the vertical plate 605 in the discharge direction M5. The vertical cylinder 608 is supported vertically downward on the upper portion of the vertical plate 605, and a pressing cylinder 610 is connected to the tip of the rod 609.
[0015]
Therefore, the vertical cylinder 608 is first actuated to raise the pressing rod 610, wait until the processed rim 1 is sent to the take-out stage by the index rotation of the rotary table 100, and the rim 1 is sent to the stage. If it is placed on the roller 601, the vertical cylinder 608 is actuated to lower the pressing rod 610 as indicated by the arrow M6. Next, the horizontal cylinder 606 is operated to pull the rod 607 to push the pressing rod 610 to the inside of the side portion of the rim 1 and to tilt downward by pulling the rod 607 in the direction of the arrow M7. The rim 1 is moved onto the discharge roller 602. Then, as indicated by an arrow M8, the vertical cylinder 608 is operated to raise the pressing rod 610, and the rim 1 is discharged by the discharge roller 602. The horizontal cylinder 606 is then operated to move the pressing rod 610 toward the rotary table 100 to prepare for the next discharge of the rim 1.
[0016]
As described above, the rim processing apparatus of the present embodiment employs a pentagonal rotary table, corresponds to each station such as a seat-pressing stage, and is provided with the arms 107 to 111 having the presser plate 115. This can be performed continuously in parallel, and the efficiency of the machining operation can be improved.
[0017]
【The invention's effect】
The rim processing apparatus of the present invention is driven by a drive unit to rotate an index in a horizontal plane and move between an input stage, a countersink stage, a drilling stage, a chamfering stage, and an extraction stage set in the horizontal plane. And a dosing machine which is provided on the dosing stage and which positions the rim and delivers it to the rotary table; A drilling machine that opens a valve hole in the rim coaxially with the seating surface, a chamfering machine that chamfers the valve hole to and from the chamfering stage, and a processed rim that is provided on the extraction stage. A rim processing apparatus having a take-out machine for receiving from a rotary table, wherein the rotary table is a take-out stage positioned at a loading stage A clamper that holds the clamped state and releases the clamp at the take-out stage is provided, so that the rim is subjected to processing while being positioned at a predetermined position of the rotary table, resulting in misalignment. Accurate machining can be realized.
[Brief description of the drawings]
FIG. 1 is an overall plan view of a rim processing apparatus according to an embodiment of the present invention. FIG. 2 is a plan view of a rotary table according to an embodiment of the present invention. FIG. 4 is a plan view of a dosing machine according to an embodiment of the present invention. FIG. 5 is an enlarged side view of a positioning unit according to an embodiment of the present invention. Side view of unloader [FIG. 7] (a) Cross-sectional view of conventional rim (b) Conventional rim machining process illustration (c) Conventional rim machining process illustration (d) Conventional rim machining process explanation [Fig. 8] Plan view of a conventional rim processing apparatus [Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Rim 1a Seat surface 1b Valve hole 100 Rotary table 200 Loading machine 300 Seat pushing machine 400 Hole punching machine 500 Chamfering machine 600 Unloading machine P1 Loading stage P2 Seat pushing stage P3 Drilling stage P4 Chamfering stage P5 Unloading stage

Claims (2)

A rotary table that is driven by a drive unit and rotates in an index in a horizontal plane, and moves between an input stage, a countersink stage, a drilling stage, a chamfering stage, and an extraction stage set in the horizontal plane;
A charging machine provided on the charging stage and delivering the rim to the rotary table;
A seat pusher that moves in and out of the seat push stage to form a seat surface on the rim;
A drilling machine that opens and closes the valve hole in the rim, coaxially with the seating surface, withdrawing to and from the drilling stage;
A chamfering machine for chamfering the valve hole by going back and forth to the chamfering stage;
A rim processing device provided on the take-out stage and having a take-out machine for receiving a processed rim from the rotary table,
The rotary table includes a clamper that holds the rim positioned at the input stage while being clamped to the extraction stage, and releases the clamp at the extraction stage ;
The feeding machine opens and closes symmetrically with respect to the rim, and a pair of clamping claws that clamp the rim from the inner diameter side and the outer diameter side of the rim, and a clamping claw driving unit that opens and closes the clamping claws symmetrically A rim processing apparatus comprising: a positioning unit including: The rim processing apparatus according to claim 1, wherein the clamper has a pressing plate that clamps an edge of the rim in the vertical direction, and the pressing plate is formed long in the radial direction of the rim.

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