JP5503368B2 - Grinder - Google Patents

Description

  The present invention relates to a grinding machine used for grinding an outer peripheral surface or an inner peripheral surface of a cylindrical or columnar workpiece such as a bearing.

  Conventionally, a grinding machine has been used for grinding the inner peripheral surface of the cylindrical workpiece as described above (see, for example, Patent Document 1).

  As shown in FIG. 16, the grinding machine disclosed in Patent Document 1 guides a retracting roll 151 and a supporting roll 152 that rotate a workpiece, and a workpiece from a workpiece supply position S2 to a machining position S1 on the upper surface portion, and is processed at a tip portion 153a. A shoe 153 that is a support member that contacts the workpiece W moved to the position and holds the workpiece in the machining position; a retraction means 140 that moves the retraction roll from a position where the work is rotated to a retreat position that is separated from the work; A pressing member 154 that is reciprocally moved along the upper surface portion of the plate and moves the workpiece by pressing it from the supply position to the machining position, and a supply that generates a driving force that reciprocates the pressing member and a driving force that retracts the retracting roll. A discharge motor 112 and a grinding means for grinding the workpiece are provided, and the driving force of the supply / discharge motor is transmitted to the retracting means. Both are configured so as to transmit the driving force of the feed discharge motor to the pressing member.

JP 2009-136953 A

  However, in a conventional grinder, when changing a workpiece to be ground, that is, when changing a so-called tooling, the workpiece is once securely received at the supply position, and the workpiece is guided to an accurate position even at the processing position. Thus, it was necessary to adjust the movement range of the front-end | tip part of a press member accompanying replacement | exchange of a press member and this. The labor for exchanging the pressing member and adjusting the range of movement of the distal end of the pressing member after the pressing member has been changed require a lot of labor.

  Also, with conventional grinding machines, the tip of the shoe that holds the position of the workpiece during grinding is worn according to the number of workpieces processed. It was necessary to perform adjustment work to return. As the shoe is adjusted, the position of the shoe receiving portion (V-shaped groove) that temporarily stores the workpiece at the supply position also changes in the machining position direction, so that a plurality of workpieces are supplied to the supply position. In order to prevent poor supply and reduce the cycle time and the load applied to the workpiece, the tip of the pressing member is moved so that the workpiece is brought into contact with the tip of the pressing member from the beginning to start moving. It was necessary to adjust the range. Therefore, the present invention has been made in view of the above-described problems, and is an adjustment work for adjusting the moving range of the tip end portion of the pressing member accompanying a tooling change and a shoe adjustment work due to a change of a workpiece to be processed or the like. A grinding machine capable of reducing and reducing work time is provided.

In order to solve the above problems, the present invention proposes the following means.
The grinding machine of the present invention is supported so as to rotate in different directions, and a retraction roll and a support roll that rotate the workpieces supplied to the machining positions between them, and the machining from the supply position that temporarily stores the workpieces. The work is guided to a position, and a support member that supports the work at the tip portion is disposed so as to be capable of reciprocating along the upper surface portion of the support member. The pressing member that starts pressing the workpiece from the supply position to the processing position, a supply / discharge motor that provides a driving force for reciprocating the pressing member, and the rotational movement of the output shaft of the supply / discharge motor are pressed. A motion converting means for converting the reciprocating motion of the member; and a grinding means for grinding the work while abutting the support tip of the support member at the processing position. A cutting machine, characterized in that it comprises an adjusting means which is used to adjust the initial position of the pressing tip of the pressing member into a reciprocating motion direction of the pressing member.

  According to the grinding machine of the present invention, the position of the tip portion of the pressing member (loader blade) is adjusted by the adjusting means, so that the support member (shoe that has changed with the tooling change and the position adjustment of the support member is changed. ), The initial position of the tip of the pressing member can be easily adjusted according to the position of the accommodating portion (V-shaped groove), so that the position adjustment work of the tip of the pressing member can be reduced and the working time can be shortened.

  According to the invention, in addition to the above, the motion converting means is composed of a rod-shaped member, and the adjusting means has one end pivoting about the output shaft and the other end reciprocating motion of the pressing member. A rod-shaped member that advances and retreats in the direction, and adjusts the position of the pressing tip by moving the other end of the rod-shaped member in the reciprocating direction by changing the distance between one end of the rod-shaped member and the output shaft. It is characterized by doing.

  That is, by changing the distance between one end of the rod-shaped member that rotates about the output shaft and the output shaft, the adjustment of the position of the pressing tip can be easily adjusted, so that the replacement work of the rod-shaped member is omitted. In addition, it is possible to reduce the adjustment work of the initial position of the pressing tip and the work time.

  According to the invention, in addition to the above, the supply / discharge motor is a motor capable of controlling the rotation angle of the output shaft, and the adjusting means controls the starting rotation angle of the output shaft. It includes control means for a supply / discharge motor, and changes the starting rotation angle of the output shaft to adjust the initial position of the pressing tip corresponding to the starting rotation angle.

  That is, by controlling the starting rotation angle of the output shaft, the position of the pressing tip can be adjusted while maintaining the position of the tip of the pressing member at the reference position of the tip of the supporting member or the position of the tip of the supporting member before wear. Since the initial position of the pressing tip can be easily adjusted in accordance with the accommodating portion of the supporting member that has changed along with it, the adjustment work of the pressing member can be reduced, and the position adjusting operation of the pressing tip can be reduced and the work time can be reduced. It can be shortened.

  According to the invention, in addition to the above, the adjusting means adjusts the pressing tip so as not to move backward from the initial position by limiting the rotation angle of the output shaft. Features.

  That is, in addition to the above effect, the rotation angle of the output shaft of the supply / discharge motor is controlled, and the pressing tip is adjusted so as not to move backward from the initial position corresponding to the workpiece supply position. Since one workpiece can be accommodated in the accommodating portion of the support member at the supply position, the workpiece to be processed next moves over the accommodating portion of the support member and moves backward, and the other workpiece is supplied near the accommodating portion. Thus, it is possible to avoid a state in which the pressing member presses a plurality of workpieces at a time.

It is a top view of the grinding machine of a 1st embodiment of the present invention. It is a H direction arrow line view in FIG. It is a G direction arrow line view in FIG. FIG. 3 is an enlarged view of a main part of FIG. 2. It is explanatory drawing which shows the process in which the grinding machine of 1st Embodiment of this invention supplies a workpiece | work. It is explanatory drawing which shows the process in which the grinding machine of 1st Embodiment of this invention supplies a workpiece | work. It is explanatory drawing which shows the process in which the grinding machine of 1st Embodiment of this invention supplies a workpiece | work. It is explanatory drawing which shows the process in which the grinding machine of 1st Embodiment of this invention supplies a workpiece | work. It is explanatory drawing of operation | movement of the output shaft and rocking lever of the grinding machine of 1st Embodiment of this invention. It is explanatory drawing of operation | movement of the output shaft and rocking lever of the grinding machine of 2nd Embodiment of this invention. It is explanatory drawing which shows the process of supplying the workpiece | work of the grinding machine of 2nd Embodiment of this invention. It is explanatory drawing which shows the process in which the grinding machine of 3rd Embodiment of this invention supplies a workpiece | work. It is explanatory drawing which shows the adjustment means of the grinding machine of 4th Embodiment of this invention. It is explanatory drawing which shows the stroke adjustment means of the press member in the adjustment means of the grinding machine of 4th Embodiment of this invention. It is explanatory drawing which shows the position adjustment means of the press member in the adjustment means of the grinding machine of 4th Embodiment of this invention. It is explanatory drawing which shows the conventional grinding machine.

(First embodiment)
Hereinafter, a first embodiment of the present invention will be described in detail with reference to the drawings.
1 to 4 are explanatory views of an internal grinding machine 100 according to the first embodiment of the present invention. 1 is a plan view of the internal grinding machine 100, FIG. 2 is a view taken in the direction of arrow H in FIG. 1, FIG. 3 is a view taken in the direction of arrow G in FIG. 1, and FIG. In FIG. 1, for convenience of explanation, some parts are removed.

In the following embodiment, a case where the grinding machine is an internal grinding machine will be described as an example. However, the grinding machine is not limited to the internal grinding machine, and may be an external grinding machine.
The internal grinding machine 100 is an apparatus that grinds the inner peripheral surface of the workpiece W successively supplied to the machining position S1 (see FIG. 2) therein by the grinding means 170 while rotating the workpiece W.

  As shown in FIG. 2, the internal grinding machine 100 includes a supply / discharge unit 150 that supplies and discharges the workpieces W one after another, and a retreat unit that retracts the workpiece W from a position where the upper roll 151 (described later) of the supply / discharge unit 150 rotates. 140 and a control means 180 to be described later, the rotation angle can be controlled, a servo motor 112 that generates a driving force for driving each component, and a first transmission means 120 for transmitting the driving force of the servo motor 112 to the retracting means 140. A second transmission means 130 for transmitting a driving force of the servo motor 112 to a loader blade 154, which will be described later, a roll driving means 160 (see FIG. 3) for generating and transmitting a driving force for rotating the work W, and a work W Grinding means 170 (see FIG. 1) for grinding the inner peripheral surface of the apparatus, and an apparatus main body 111 for supporting the retracting means 140, the servo motor 112, and the like. Are schematic configuration out with control means for controlling each component (adjusting means) 180 (see FIG. 3).

  The loader blade 154 corresponds to a pressing member in the claims, and the servo motor 112 corresponds to a supply / discharge motor. The servo motor 112 generates a driving force for retracting the upper roll 151 and a driving force for reciprocating the loader blade 154.

  As shown in FIG. 4, the supply / discharge means 150 is in contact with the workpiece W at the upper roll 151 and the lower roll 152 that rotate the workpiece W supplied to the processing position S1 between them, and the tip 153a. And a loader blade 154 which is disposed so as to be able to reciprocate along the upper surface portion 153b of the shoe 153 and presses and moves the workpiece W from the supply position S2 to the machining position S1. A supply chute 155 that accommodates the unground workpiece W, a discharge chute 156 that discharges the ground workpiece W1 from the machining position S1, and a workpiece that is adjusted so that one workpiece W is always supplied to the machining position S1. An adjustment unit 190 is included.

  The supply position S <b> 2 is a position where the workpiece W is supplied from the supply chute 155 to the upper surface portion 153 b of the shoe 153.

  During normal use of the internal grinding machine 100, as shown in FIG. 4, the upper surface portion 153b of the shoe 153 is disposed parallel to the horizontal plane, and the loader blade 154 moves backward with the forward end P1 in the X direction along the upper surface portion 153b of the shoe 153. The workpiece W is reciprocated between the ends P2, and the workpiece W is moved from the supply position S2 which is one of the X directions to the X1 direction which is a direction on the machining position S1 side.

  The upper roll 151 is disposed above the lower roll 152 so that the axis of the upper roll 151 and the axis of the lower roll 152 are parallel and rotate on the same plane. The upper roll 151 and the lower roll 152 are configured to rotate in different directions. As shown in FIG. 2, the upper roll 151 is a swing lever 141 described later, and the lower roll 152 is a device main body 111. It is rotatably supported. Then, the upper roll 151 and the lower roll 152 abut against the workpiece W and rotate the workpiece W.

  As shown in FIG. 4, the shoe 153 guides the workpiece W from the supply position S2 to the machining position S1 on the upper surface portion 153b. And in order to position the workpiece | work W supplied to supply position S2 reliably, the V-shaped groove | channel 153c is provided in the upper surface part 153b of the shoe 153. FIG.

  The work adjustment unit 190 includes a work guide plate 191 that locks the work W, and a stopper 192 that prevents the tip 191a of the work guide plate 191 from falling below a predetermined position.

  The work guide plate 191 is supported by the apparatus main body 111 so as to be rotatable around the base end 191b, and the tip 191a is urged downward by a spring (not shown). In addition, a V-shaped protrusion 191c is provided below the tip 191a of the work guide plate 191. When the work guide plate 191 biased downward comes into contact with the stopper 192, a gap is generated between the tip 191a and the V-shaped projection 191c of the work guide plate 191 and the work W supplied to the processing position S1. Is set to

  As shown in FIG. 2, the retracting means 140 includes a swing lever 141 that rotatably supports the upper roll 151, and a cam adjustment unit that adjusts the vertical distance between the swing lever 141 and an eccentric cam 124 described later. 142, a lever sensor 143 that abuts on the other end 141c of the swing lever 141 to detect the position in the vertical direction and sends a detection result signal to the control means 180, and the other end 141c of the lever sensor 143 and the swing lever 141. And a coil spring 145 that urges the other end 141c of the swing lever 141 upward.

  The swing lever 141 has a central portion 141b that is rotatably supported by the apparatus main body 111, a support portion 141e that rotatably supports the upper roll 151 at one end 141a, and a driving force of the servo motor 112 at the other end 141c. Acted.

  The cam adjustment unit 142 is fixed to the other end 141c side of the central portion 141b of the swing lever 141, and the sensor adjustment unit 144 is fixed to the other end 141c of the swing lever 141.

  The cam adjusting unit 142 and the sensor adjusting unit 144 can adjust the vertical positions of the top surface 142a of the cam adjusting unit 142 and the top surface 144a of the sensor adjusting unit 144 by screw fitting.

  The lever sensor 143 has a built-in differential transformer, for example, abuts against the top surface 144a of the sensor adjustment unit 144, detects the vertical position of the other end 141c of the swing lever 141, and sends a signal to the control means 180. .

  The first transmission means 120 includes a drive pulley 121 connected to the output shaft 112 a of the servo motor 112, a supply / discharge belt 122 wound around the drive pulley 121, and a driven follower that rotates around the supply / discharge belt 122. A pulley 123, an eccentric cam 124 that is connected to the driven pulley 123 and pushes down the other end 141c of the swing lever 141, and a servo motor idler 125 that prevents the supply / discharge belt 122 from loosening.

The drive pulley 121 is fixed to the output shaft 112 a of the servo motor 112 and rotates on the same axis as the output shaft 112 a of the servo motor 112. The eccentric cam 124 is fixed to the driven pulley 123 and rotates on the same axis as the driven pulley 123. . The drive pulley 121, the driven pulley 123, and the servo motor idler 125 rotate on the same plane.
The driven pulley 123 is set to have a pulley ratio of 1: 1 with the driving pulley 121.

  On the other hand, the second transmission means 130 has one end 131a rotatably connected to the side end of the drive pulley 121 and the other end 131b rotatably connected to a slider 132, which will be described later. A guide 133 extending and fixed to the apparatus main body 111 and a slider 132 having one end rotatably connected to the link bar 131 and the other end connected to the loader blade 154 are provided.

The link bar 131 corresponds to the motion conversion means in the claims.
Further, the slider 132 is fitted with the guide 133 and is configured to be movable only in the X direction. The link bar 131 converts the rotational motion of the output shaft 112a into a reciprocating motion in the X direction along the upper surface portion 153b of the shoe 153 of the loader blade 154.

  As shown in FIG. 3, the roll driving unit 160 rotates the upper roll pulley 161 connected to the upper roll 151, the lower roll pulley 162 connected to the lower roll 152, and the upper roll 151 and the lower roll 152. A roll motor 163 that generates force, an upper roll pulley 161, a lower roll pulley 162, a roll belt 164 wound around the rotation shaft of the roll motor 163, and a roll motor idler 165 that prevents the roll belt 164 from loosening. .

  The upper roll pulley 161 is fixed to the upper roll 151 and rotates about the same axis as the upper roll 151, and the lower roll pulley 162 is fixed to the lower roll 152 and rotates about the same axis as the lower roll 152. The rotation axes of the upper roll pulley 161, the lower roll pulley 162, the roll motor idler 165, and the roll motor 163 rotate on the same plane.

  The roll belt 164 transmits the driving force of the roll motor 163 to the upper roll 151 and the lower roll 152, and rotates the upper roll 151 and the lower roll 152.

  1, the winding surface A2 around which the roll belt 164 is wound and the winding surface A1 around which the supply / discharge belt 122 is wound are parallel to each other and viewed from above. The supply / discharge belt 122 and the roll belt 164 are arranged so that at least a part of the width B1 of the discharge belt 122 and the width B2 of the roll belt 164 overlap each other.

  The winding surface A2 around which the roll belt 164 is wound is a plane including the center line of the width of the roll belt 164 wound around the rotation shaft of the upper roll pulley 161, the lower roll pulley 162, and the roll motor 163. It is. The same applies to the winding surface A1 around which the supply / discharge belt 122 is wound.

  As shown in FIG. 3, the roll motor 163 is disposed on the X1 direction side along which the workpiece W moves along the upper surface portion 153 b of the shoe 153 from the servo motor 112.

  As shown in FIG. 1, the grinding means 170 includes a grindstone 171 that grinds the inner peripheral surface of the workpiece W, a spindle 172 that generates a driving force for rotating the grindstone 171, and the grindstone 171 and the spindle 172 that have an upper surface 153 b of the shoe 153. And a grinding table 173 that moves in the Y direction perpendicular to the X direction.

  3 receives signals from the servo motor 112 and the lever sensor 143, and controls the servo motor 112, the roll motor 163, the spindle 172, and the grinding table 173.

  Next, the operation of the internal grinding machine 100 will be described with reference to FIG. 2 and FIGS. FIGS. 5 to 8 are explanatory views showing a process in which the internal grinding machine grinds the workpiece W, and the internal grinding where the rotation angle θ of the output shaft 112a of the servo motor 112 becomes 90 °, 150 °, 180 °, and 270 °, respectively. The state of the board is shown. 9 is an explanatory view of the operation of the output shaft and the swing lever of the grinding machine, FIG. 9 (a) shows the operation of the output shaft of the grinding machine, and FIG. 9 (b) shows the operation of the swing lever. Is shown. 9A and 9B, the horizontal axis represents the rotation angle θ of the output shaft 112a of the servo motor 112, and the vertical axis in FIG. 9A represents the angular velocity of the output shaft 112a in the direction D (see FIG. 2). The vertical axis of FIG. 9B indicates the rotation angle in the E direction (see FIG. 2) about the central portion 141b of the swing lever 141.

  FIG. 2 shows a state before the next unground workpiece is supplied after the machining step in which the internal grinding machine 100 grinds the inner peripheral surface of the unground workpiece W is completed. First, the output shaft 112a of the servo motor 112 is controlled so as to match the V-shaped groove 153c changed by the position adjustment of the tip 153a of the shoe 153, and the rotation angle θ of the output shaft 112a at this time is set as the shaft rotation standby angle. To do. In the grinding machine shown in FIG. 2, the rotation angle θ is set to 30 ° as the shaft rotation standby angle. However, the shaft is appropriately set according to the position of the loader blade 154 and the position of the V-shaped groove 153c of the shoe 153. It is also possible to set the rotation standby angle.

  As shown in FIG. 2, when the machining process is completed, the output shaft 112a of the servo motor 112 stands by at the shaft rotation standby angle, and the upper roll 151 and the lower roll 152 come into contact with the machined work W1 and the work is finished. It arrange | positions in the position which supports W1. As shown in FIG. 4, the tip 154a of the loader blade 154 stands by at the initial position P3, and the workpiece W is accommodated in the V-shaped groove 153c at the supply position S2.

  Next, an operation of moving the loader blade 154 and pressing and supplying the workpiece W from the supply position S1 to the machining position S2 will be described. In this operation, as shown in FIGS. 5 to 8, the output shaft 112a of the servo motor 112 starts to rotate in the direction D from the shaft rotation standby angle, and the non-machining step of supplying the unground workpiece W to the machining position S1. Further, the rotation is further rotated 360 ° in the D direction from the shaft rotation standby angle, and the standby is again performed at the shaft rotation standby angle.

  The control means 180 drives the roll motor 163 only during the machining process, and transmits the driving force of the roll motor 163 to the upper roll pulley 161 and the lower roll pulley 162 via the roll belt 164, so that the upper roll 151 and the lower roll 152 are rotated.

  However, you may rotate the upper roll 151 and the lower roll 152 through a non-process process and a process process.

When the control means 180 determines that the machining process is completed by a method described later, the control means 180 starts the non-machining process.
In this non-machining step, as shown in FIG. 1, the control means 180 first commands the grinding table 173 while rotating the grindstone 171 to move the grindstone 171 in the Y direction away from the machining position S1. The grinding table 173 is moved to a grindstone standby position (not shown) to stand by.

  Next, the control unit 180 starts rotating the output shaft 112a of the servo motor 112 in the direction D from the shaft rotation standby angle state where the rotation angle θ is 30 ° in FIG. 2, and the workpiece W is moved from the supply position S2 to the machining position. Move to S1. When the output shaft 112a rotates, the drive pulley 121 fixed to the output shaft, the supply / discharge belt 122 wound around the drive pulley, the driven pulley 123 around which the supply / discharge belt is wound, and the eccentricity fixed to the driven pulley The driving force of the servo motor 112 is transmitted in the order of the cam 124 and rotates. On the other hand, when the output shaft 112a of the servo motor 112 rotates, the drive pulley 121 fixed to the output shaft 112a, the link bar 131 rotatably connected to the drive pulley, and the slider 132 rotatably connected to the link bar are in this order. Thus, the driving force of the servo motor is transmitted, and the loader blade 154 connected to the slider starts moving in the X1 direction.

  Since the pulley ratio between the drive pulley 121 and the driven pulley 123 is set to 1: 1, when the output shaft 112a rotates once, the drive pulley 121, the driven pulley 123, and the eccentric cam 124 rotate once.

  Next, as shown in FIG. 9A, the output shaft 112a gradually increases in rotational speed from the standby state where the rotational angle θ is 30 °, and then continues to rotate at a constant high angular speed ω1. As shown in FIG. 2, a link bar 131 whose one end 131 a is rotatably connected to the drive pulley 121 converts a rotary motion into a linear motion, and a loader blade is connected via a slider 132 connected to the link bar 131. The loader blade 154 moves in the X1 direction to move the workpiece W from the supply position S2 in the X1 direction.

  When the rotation angle θ is between 90 ° and 180 °, the loader blade 154 moves in the X1 direction even when the rotation angle θ is between 90 ° and 180 °, as shown in FIGS. However, since the angular velocity of the output shaft 112a during this period is constant at ω1, the moving speed of the loader blade 154 in the X1 direction decreases as the rotation angle θ approaches 180 °.

  Further, when the rotation angle θ reaches 180 °, as shown in FIG. 7 and FIG. 9A, the tip portion 154a of the loader blade 154 reaches the forward end P1, which is the most moved state in the X1 direction. The blade 154 supplies the workpiece W to the machining position S1 in a state where the moving speed in the X1 direction is reduced.

  Next, when the rotation angle θ is between 180 ° and 270 °, the loader blade 154 moves in the X2 direction, which is the opposite direction to the X1 direction, as shown in FIGS. Further, as shown in FIG. 9 (a), the control means 180 controls the angular velocity of the output shaft 112a of the servo motor 112 that has been rotated at a constant fast angular velocity ω1 when the output shaft 112a reaches a constant rotational angle θ1. And continue to rotate at a constant slow angular velocity ω2. The angular velocity of the servo motor 112 is decreased from ω1 to ω2 when the upper roll 151 is brought into contact with the unground workpiece W supported in the machining position S1. This is to prevent the outer peripheral surface of the workpiece W from being damaged.

  After the output shaft 112a reaches a certain rotation angle θ2 shown in FIG. 9B, the control means 180 causes the other end 141c of the swing lever 141 to be within a predetermined range in the vertical direction by a signal from the lever sensor 143. When it is determined that there is, the grinding table 173 is commanded to move the grindstone 171 in the Y direction in a direction approaching the machining position S1, and the grinding table 173 is moved from a grindstone standby position (not shown) to a position for grinding the workpiece W. And the grindstone 171 which continues rotating is made to contact the internal peripheral surface of the workpiece | work W, and a processing process is started.

  Next, when the rotation angle θ exceeds 270 °, as shown in FIGS. 8 and 9B, the loader blade 154 continues to move in the X2 direction, and the tip portion 154a of the loader blade 154 moves from the supply position S2 to X2. When moved in the direction, the unground workpiece W is supplied to the supply position S2, and when moved further in the X2 direction, the workpiece W is accommodated in the V-shaped groove 153c.

  When the rotation angle θ of the output shaft 112a reaches 360 °, the tip portion 154a of the loader blade 154 reaches the retracted end P2, and when the rotation angle θ further rotates to 390 °, the output shaft 112a becomes the shaft rotation standby angle. Control is performed by the control unit 180 so as to stop at the rotation angle θ = 30 °, and the tip portion 154a of the loader blade 154 returns to the initial position P3.

  The output shaft 112a of the servo motor 112 stands by at the shaft rotation standby angle until the control means 180 determines that the machining process has been completed. The end of the machining process is detected when a predetermined time has elapsed from the start of the machining process, for example, by a timer provided in the control means 180.

  Thus, while the output shaft 112a of the servo motor 112 rotates once in the D direction, that is, while the rotation angle θ rotates from 30 ° to 390 °, the ground workpiece is discharged from the machining position S1 and the unground workpiece Is supplied to the machining position S1, and the workpiece W to be sent to the next machining position is accommodated in the supply position S2.

  Further, while the output shaft 112a of the servo motor 112 makes one rotation in the D direction, the tip portion 154a of the loader blade 154 passes from the initial position P3 to the forward end P1, changes direction at the backward end P2, and further to the initial stage. Return to position P3.

  Thus, according to the internal grinding machine 100 of the present invention, the servo motor 112, which is a supply / discharge motor capable of controlling the rotation angle, is used, and the shaft rotation standby angle can be controlled by the control means 180. It is possible to easily adjust the initial position P3 of the tip portion 154a of the loader blade 154 as a pressing member according to the position of the V-shaped groove 153c of the shoe 153 that changes at the time and during the position adjustment of the shoe.

  Further, in the first embodiment, the control unit 180 changes the shaft rotation standby angle to the rotation angle θ according to the position change of the V-shaped groove 153c of the shoe 153 when the tooling is changed and the position of the tip of the shoe is adjusted. Can be set appropriately between 0 ° and 90 °. Further, the control unit 180 may set the shaft rotation standby angle between the rotation angles 270 ° to 360 °, and set the output shaft 112a to rotate in the D ′ direction that is opposite to the D direction. Even if the output shaft 112a rotates in the direction D ′ opposite to the direction D from the rotation angle of 330 °, the workpiece W can be supplied to the machining position S1 and the upper roll 151 can be retracted from the machining position S1. It is.

(Second Embodiment)
Next, a second embodiment of the present invention will be described with reference to the drawings. FIG. 10 is an explanatory view of the operation of the output shaft 112a and the swing lever 141 of the servo motor 112 of the second embodiment, and FIG. 11 is an explanatory view of the internal grinding machine 100 of the second embodiment of the present invention. It is.

  For convenience of explanation, in the second embodiment of the present invention, the same components as those described in the first embodiment are denoted by the same reference numerals, and description thereof is omitted.

  Compared with the first embodiment, the different part of the second embodiment is that the rotation angle of the servo motor 112 is set by setting the shaft rotation standby angle and the end rotation angle to 30 ° and 390 °, respectively, in the first embodiment. The shaft 112a is rotated only in one direction. However, in the second embodiment, the shaft rotation standby angle and the end rotation angle are set to 30 ° and 330 ° in the odd-numbered non-machining steps including the first non-machining step, respectively. In addition, the shaft rotation standby angle and the end rotation angle are set to 330 ° and 30 °, respectively, in the even-numbered non-machining process including the next non-machining process, and the servo motor rotation shaft in the D direction (forward rotation). ) And D ′ direction (reverse rotation) in both directions. Therefore, the configuration of the second embodiment is almost the same as the configuration of the first embodiment described above, and only the control method of the control means 180 is different.

  Next, the operation of the internal grinding machine 100 will be described with reference to FIGS. FIG. 10 is an explanatory view for explaining the operation of the output shaft of the servo motor and the swing lever in the grinding machine of the second embodiment, and FIG. 11 supplies a workpiece in the grinding machine of the second embodiment of the present invention. It is explanatory drawing which shows a process.

  The process from the shaft rotation standby angle 30 ° to the rotation angle 270 ° of the output shaft 112a of the servo motor 112 shown in FIG. 10, that is, the process using the positive rotation (D direction) is the same as in the first embodiment. Therefore, the description is omitted. Thereafter, when the rotation angle is between 270 ° and 330 °, the servo motor 112 rotates at the rotation angle ω2, the loader blade 154 continues to move in the X2 direction, and the tip portion 154a of the loader blade 154 moves from the supply position S2 in the X2 direction. Is moved to the supply position S2, and the workpiece W is accommodated in the V-shaped groove 153c. Further, when the output shaft 112a reaches a rotation angle 330 °, which is an end rotation angle, the servo motor 112 is controlled to stop, and the loader blade 154 is also stopped. The servo motor 112 stands by at the shaft rotation standby angle before the reverse rotation is performed until the rotation angle of the output shaft 112a becomes 330 ° until the control unit 180 determines that the machining process is completed.

  Next, when the control circuit 180 determines that the machining process is completed, as shown in FIG. 10A, the output shaft 112a has a rotation angle θ, which is a shaft rotation standby angle during reverse rotation, from 330 ° to the D ′ direction. The rotation speed is gradually increased, and then the rotation is continued at a constant high angular velocity ω1. When the rotation angle θ of the output shaft 112a is between 270 ° and 180 °, the loader blade 154 has the rotation angle θ similar to the operation when the rotation angle θ of the first embodiment is between 90 ° and 180 °. However, since the angular velocity of the output shaft 112a is constant at ω1, the moving speed of the loader blade 154 in the X1 direction increases as the rotation angle θ approaches 180 °. descend.

  When the rotation angle θ of the output shaft 112a reaches 180 °, as shown in FIG. 10B, the rotation angle of the swing lever 141 in the E direction becomes the maximum, and the swing lever 141 is a ground workpiece. The upper roll 151 is moved to the retreat position S3 that is farthest from W1, and the tip portion 154a of the loader blade 154 reaches the forward end P1 that has moved most in the X1 direction, and the load speed of the loader blade 154 decreases in the X1 direction. Then, the next workpiece W is supplied to the machining position S1. Subsequently, when the rotation angle θ of the output shaft 112a is between 180 ° and 90 °, as shown in the path D ′ in FIG. 10A, the control unit 180 causes the output shaft 112a to have a constant rotation angle θ1. When it reaches, the angular velocity of the output shaft 112a of the servo motor 112 that has been rotating at a constant fast angular velocity ω1 is decreased, and the rotation is continued at a constant slow angular velocity ω2. Thereafter, while the rotation angle θ of the output shaft 112a exceeds 90 ° and the rotation angle θ = 30 °, which is the end rotation angle, the servo motor 112 rotates at the rotation angle ω2, and the loader blade 154 moves in the X2 direction. Subsequently, when the tip 154a of the loader blade 154 moves in the X2 direction from the supply position S2, the unground workpiece W is supplied to the supply position S2, and the workpiece W is accommodated in the V-shaped groove 153c. When the rotation angle θ, which is the end rotation angle at the time of reverse rotation, reaches 30 °, the servo motor 112 is stopped by the control means 180, and the processing process is started. The servo motor 112 stops in a state where the rotation angle θ of the output shaft 112a that is the shaft rotation standby angle before the forward rotation is 30 ° until the control unit 180 determines that the machining process is finished.

  Thus, according to the internal grinding machine of the second embodiment of the present invention, the control unit 180 controls the shaft rotation standby angle of the servo motor 112 for each rotation direction of the output shaft in the same manner as the internal grinding machine of the first embodiment. Since the initial position P3 of the tip end portion 154a of the loader blade 154 as a pressing member can be easily adjusted by switching to the position of the V-shaped groove 153c of the shoe to be changed at the time of tooling change and shoe position adjustment. Accordingly, the initial position P3 of the pressing member can be easily adjusted. In the second embodiment, the servo motor is controlled by the control means so that the workpiece W does not move in the rear end side direction with respect to the position of the V-shaped groove of the shoe, and the moving range of the pressing member is adjusted. Therefore, the workpiece W can be reliably positioned at the supply position, and the workpiece W can move to the rear end side beyond the V-shaped groove of the shoe from the first embodiment. This is advantageous in that a supply failure of the workpiece is prevented, for example, a plurality of workpieces are supplied to the position.

(Third embodiment)
Next, a third embodiment of the present invention will be described with reference to the drawings. FIG. 12 is an explanatory diagram of the operation of the output shaft 112a of the servo motor 112 and the swing lever 141 in the internal grinding machine 100 according to the third embodiment of the present invention.

  For convenience of explanation, in the third embodiment of the present invention, the same components as those described in the second embodiment are denoted by the same reference numerals, and the description thereof is omitted.

  The configuration of the third embodiment is also substantially the same as the configuration of the first and second embodiments described above, and only the control method of the control means 180 is different. In the second embodiment, a different part of this control method is that, in the second embodiment, the shaft rotation standby angle and the end rotation angle before the servo motor is rotated forward are set to 30 ° and 330 °, respectively, and the servo motor 112 is stopped. In addition, although the shaft rotation standby angle and the end rotation angle before rotating the servo motor in reverse are set to 330 ° and 30 °, respectively, in the third embodiment, the shaft rotation standby angle and the end rotation angle are set to 30 °, respectively. This is a point where the output shaft 112a is reversely controlled when the rotation angle θ reaches 180 °.

  For convenience of explanation, in the third embodiment of the present invention, the same components as those described in the first and second embodiments are given the same reference numerals, and the description thereof is omitted.

Next, the operation of the internal grinding machine 100 of the third embodiment will be described.
The steps from the shaft rotation standby angle 30 ° to the rotation angle 180 ° of the output shaft 112a of the servo motor 112 are the same as those in the first embodiment, and thus the description thereof is omitted. In the state where the rotation angle θ of the output shaft 112a is 180 °, the tip portion 154a of the loader blade 154 reaches the forward end P1 that moves the most in the X1 direction, and the loader blade 154 has a moving speed in the X1 direction decreased. While supplying the next workpiece W to the machining position S1, the workpiece guide plate 191 is lifted to push the previous workpiece in the machining position S1 to the discharge chute. When the rotation angle θ of the output shaft 112a is between 180 ° and 90 °, the control means 180 causes the output shaft 112a to reach a certain rotation angle θ1 as shown by the path D ′ in FIG. When this is done, the angular speed of the output shaft 112a of the servo motor 112 that has been rotating at a constant high angular velocity ω1 is reduced, and the rotation is continued at a constant slow angular velocity ω2. Thereafter, when the rotation angle θ is between 90 ° and 30 °, it rotates at the rotation angle ω2, the loader blade 154 continues to move in the X2 direction, and the tip portion 154a of the loader blade 154 moves in the X2 direction from the supply position S2. Then, the unground workpiece W is supplied to the supply position S2, and the workpiece W is accommodated in the V-shaped groove 153c. When the rotation angle θ of the output shaft 112a reaches the end rotation angle 30 ° during reverse rotation, the servo motor 112 stops. The servo motor 112 stands by in a state where the rotation angle θ of the output shaft 112a that is the shaft rotation standby angle is 30 °, until the control unit 180 determines that the machining process is completed.

  Thus, according to the internal grinding machine of the third embodiment of the present invention, the control unit 180 controls the shaft rotation standby angle of the output shaft 112a of the servo motor 112 and the internal grinding machine of the first and second embodiments. By setting the end (reversal) rotation angle in accordance with the relative positions of the loader blade tip 154a, the shoe tip 153a, and the receiving portion, the forward end P1 and the initial position P3 of the tip of the pressing member can be easily set. Since it can be adjusted, it is possible to easily adjust the forward end P1 and the initial position P3 of the pressing member according to the position of the shoe housing portion that changes when the tooling is changed and when the position of the shoe is adjusted.

  Further, in this third embodiment, the shaft rotation standby angle is appropriately set between 0 ° and 90 ° as the rotation angle θ of the output shaft according to the position of the V-shaped groove 153c which is the housing portion of the shoe 153. It is also possible to adjust the end (reversal) rotation angle around 180 °. In addition, the shaft rotation standby angle is set between 270 ° and 360 °, rotated in the reverse direction in the D ′ direction, and reversed around the rotation angle θ = 180 ° of the output shaft 112a, to the shaft rotation standby angle in the D direction. The control means 180 may be set so as to return with normal rotation. Even when the output shaft 112a rotates in the reverse direction D ′ from the rotation angle θ = 330 °, as described above, the workpiece W is supplied to the machining position S1 and the upper roll 151 is retracted from the machining position S1. Because you can.

(Fourth embodiment)
Next, a fourth embodiment of the present invention will be described with reference to the drawings. FIG. 13 is an explanatory view of an internal grinding machine 200 according to the fourth embodiment of the present invention, and FIG. 14 is an explanatory view showing a stroke adjusting unit that adjusts the stroke of the loader blade 154 in the adjusting means of the grinding machine 200. FIG. 15 is an explanatory view showing a position adjusting unit for adjusting the position of the loader blade 154 in the adjusting means of the grinding machine 200.

  For convenience of explanation, in the first embodiment of the present invention, the same components as those described in the first embodiment are denoted by the same reference numerals, and description thereof is omitted.

  The difference of the fourth embodiment from the first embodiment is that, in the first embodiment, a loader blade is provided between the output shaft 112a of the servo motor and the link bar 231 corresponding to the motion conversion means comprising a rod-shaped member. The adjustment means 201 which adjusts the movement range of the front-end | tip part 154a of 154 is a point provided.

  The adjusting means 201 includes a stroke adjusting unit 210 that adjusts the stroke of the tip 154a of the loader blade 154, and a position adjusting unit 230 that adjusts the relative position of the tip 154a of the loader blade 154 and the tip 153a of the shoe 153. It is composed of the adjustment part.

  The stroke adjustment unit 210 is configured to adjust the stroke of the loader blade 154 by changing the distance between the output shaft 112 a of the servo motor 112 and the central shaft 212 b that supports the rear end of the link bar 231. And a base plate 211 including a plurality of stroke adjusting screw holes 211a and a plurality of stroke adjusting through holes (long holes) 212a are formed. The adjustment plate 212 includes a support shaft 212b that pivotally supports the rear end portion thereof in a rotatable manner. The adjustment plate 212 can be moved and adjusted in the radial direction of the output shaft 112a. A bolt 213 for fixing the base plate 211 and the adjustment plate 212 is inserted into the stroke adjustment through hole 212a, and the stroke adjustment through hole 212a is inserted into the stroke adjustment through hole 212a. The bolts 213 are screwed into the corresponding stroke adjusting screw holes 211a to be fixed to the base plate 211.

  Further, the position adjustment unit 230 is configured to adjust the relative position of the tip end portion 154a of the loader blade 154 with respect to the tip end portion 153a of the shoe 153 by adjusting the length of the link bar 231. The link bar 231 has a rear end portion 231a of a link bar in which a female thread portion is formed at one end and a sleeve that rotates with respect to the support shaft 212b of the adjustment plate is formed at the other end, and male screw portions are formed at both ends. The link bar intermediate portion 231b that is screwed with the rear end portion of the link bar, the female screw portion is formed at one end and screwed with the link bar intermediate portion, and the other end is rotatably connected to the slider 132. It is comprised from the link bar front-end | tip part 231c. The link bar 231 is adjusted by rotating the link bar intermediate portion 231b, and the relative position of the tip 154a of the loader blade 154 is adjusted by adjusting the length of the link bar 231. Can do.

Next, the operation of the inner surface grinding machine 200 of the fourth embodiment will be described.
First, a method for adjusting the stroke of the loader blade 154 using the stroke adjusting unit 210 of the loader blade 154 and then adjusting the tip of the loader blade 154 to the forward end P1 is described with reference to FIGS. explain.

  First, the tip 153a of the shoe 153 is moved to a position corresponding to the workpiece processing position S1, and the distance from the tip 153a of the shoe 153 to the rearmost end of the shoe housing corresponding to the workpiece supply position is set. taking measurement. This distance is referred to as a movement distance R. This moving distance R is the stroke of the loader blade 154 that is newly set. From this movement distance R, the link distance L1 is set to a half value of the movement distance R. The position of the adjustment plate 212 in the radial direction with respect to the base plate is adjusted so that the link rotation radius L, which is the distance between the output shaft 112a and the support shaft 212b of the adjustment plate, matches the link distance L1, and the bolts 213 are tightened to fix them together. . Thereby, the stroke adjustment of the loader blade 154 is completed.

  Next, the forward end P1 of the tip portion 154a of the loader blade 154 is adjusted. First, the servo motor 112 is controlled by the control means 180 so that the rotation angle of the output shaft 112a is 180 °, and the loader blade 154 is set to the most extended state. Next, the position adjustment unit 230 is adjusted so that the tip portion 154a of the loader blade 154 and the tip portion 153a of the shoe 153 coincide. Specifically, in the X direction, the link bar intermediate portion 231b is rotated so that the tip portion 154a of the loader blade 154 coincides with the tip portion 153a of the shoe 153, and the substantial length of the link bar 231 is adjusted. When the tip 154a of the loader blade 154 coincides with the tip 153a of the shoe, since the stroke adjustment of the loader blade 154 is first performed, the position of the retracted end P2 of the tip 154a of the loader blade 154 is also optimized. In particular, the moving range of the tip 154a of the loader blade 154 can be adjusted.

  Since the subsequent operations are the same as those in the case where the shaft rotation standby angle and the end rotation angle are set to 0 ° and 360 °, respectively, in the first embodiment of the present invention, description thereof will be omitted.

  Thus, according to the internal grinding machine 200 of the present invention, the loader blade 154 and the output shaft 112a of the servo motor 112 are provided with adjusting means for adjusting the stroke and position of the tip of the loader blade. While reducing the adjustment work of the blade, it is possible to shorten the loader blade tip position adjustment time and the loader blade stroke adjustment time at the time of tooling change and shoe position adjustment.

  In the fourth embodiment, by adjusting the length of the link bar 231, the movement range of the tip of the loader blade 154, that is, the forward end P1 and the backward end P2 that is the initial position are adjusted. However, if the substantial length of the slider 132 and the loader blade 154 that are rotatably connected to the link bar 231 can be adjusted, the movement range of the tip portion of the loader blade can be adjusted. . Further, in combination with the first to third embodiments, the rotation angle of the output shaft of the servo motor can be controlled by the control means so that the loader blade is moved from the initial position other than the backward end P2. .

  The first to fourth embodiments of the present invention have been described in detail with reference to the drawings. However, the specific configuration is not limited to this embodiment, and the configuration can be changed without departing from the gist of the present invention. Etc. are also included.

  For example, in the first to fourth embodiments, the supply / discharge motor is a servo motor. However, the supply / discharge motor may be a pulse motor provided with an encoder that detects the rotational position of the output shaft.

  In the first to fourth embodiments, one end 131a of the link bar is rotatably connected to the side end portion of the drive pulley fixed to the output shaft of the servo motor. However, one end of the link bar may be directly connected to a position spaced from the axis of the output shaft of the servo motor.

  In the first to fourth embodiments, one end of the second transmission means is rotatably connected to the side end of the drive pulley of the output shaft of the servo motor, and the other end is rotatable to the loader blade. And a link bar that converts the rotational movement of the output shaft into the reciprocating movement of the loader blade in the X direction. However, instead of the link bar, with the loader blade biased in the X2 direction by a spring, an eccentric cam corresponding to the motion converting means in the claims is adjustably fixed to the output shaft, and the slider or The loader blade may be converted into a reciprocating motion in the X direction. For example, by adjusting the rotation axis of the eccentric cam, the moving range of the slider and loader blade is changed, the stroke of the tip of the loader blade is adjusted, and the length of the slider and / or loader blade is adjusted. By adjusting the relative position between the tip of the loader blade and the cam surface of the eccentric cam when this tip becomes the forward end, the moving range of the tip of the loader blade is finally adjusted. May be.

100, 200 Internal grinding machine (grinding machine)
112 Servo motor (supply / discharge motor)
112a Output shaft 120 First transmission means 121 Drive pulley 122 Supply / discharge belt 123 Driven pulley 124 Eccentric cam 130 Second transmission means 131 Link bar (motion conversion means)
132 Slider 140 Retraction means 141 Swing lever 151 Upper roll (retraction roll)
152 Lower roll (support roll)
153 Shoe (support member)
154 Loader blade (pressing member)
164 Roll belt 170 Grinding means 180 Control means (adjustment means)
190 Work adjustment unit 201 Adjustment unit 210 Stroke adjustment unit 211 Base plate 212 Adjustment plate 230 Position adjustment unit 231 Link bar (motion conversion unit, rod-shaped member)
S1 Processing position S2 Supply position P1 Loader blade forward end P2 Loader blade backward end P3 Loader blade initial position W Workpiece

Claims (2)

A retraction roll and a support roll that are supported so as to rotate in different directions and rotate a workpiece supplied to a processing position between them;
A guide member that guides the workpiece from the supply position that once accommodates the workpiece to the processing position, and supports the workpiece at a tip portion; and
A pressing member that is arranged so as to be capable of reciprocating along the upper surface portion of the support member, starts moving from an initial position, starts to press the workpiece from the supply position at a tip portion, and presses the workpiece to the processing position;
A supply / discharge motor for providing a driving force for reciprocating the pressing member;
A motion converting means for converting the rotational motion of the output shaft of the supply / discharge motor into the reciprocating motion of the pressing member;
A grinding machine comprising a grinding means for grinding the workpiece while abutting against the support tip of the support member at the processing position,
Look including an adjustment means used to adjust the initial position of the pressing tip of the pressing member into a reciprocating motion direction of the pressing member,
The supply / discharge motor is a motor capable of controlling the rotation angle of the output shaft,
The adjusting unit includes a control unit of the supply / discharge motor that controls a start rotation angle of the output shaft, and changes the start rotation angle of the output shaft, so that the pressing tip portion corresponding to the start rotation angle is changed. A grinding machine , wherein an initial position is adjusted and a rotation angle of the output shaft is limited so that the pressing tip portion is not moved backward from the initial position . The motion conversion means is composed of a rod-shaped member,
The adjusting means includes a rod-like member having one end rotating around the output shaft and the other end moving back and forth in the reciprocating direction of the pressing member, and changing the distance between one end of the rod-like member and the output shaft. The position of the said press front-end | tip part is adjusted by moving the other end of the said rod-shaped member to the said reciprocating direction, The grinding machine of Claim 1 characterized by the above-mentioned.

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