JP4876835B2 - Positioning device for tape wrap equipment - Google Patents

Description

  The present invention is a comparatively incompressible abrasive-coated tape, and the abrasive-coated surface of the tape is brought into contact with and pressed against the shaft surface of a workpiece such as a steel pipe or automobile part having a rotated machining surface. A tape wrap apparatus comprising a shoe assembly having a concave surface with a high rigidity and micro-finishing the surface of a workpiece using an abrasive-coated tape, and in particular a tape wrap having a plurality of modular arm units The present invention relates to an apparatus positioning apparatus.

As a positioning device for a tape wrap device comprising a conventional abrasive-coated tape and a shoe assembly having a rigid surface that makes the tape abrasive-coated surface come into contact with and press the surface of a cylindrical body workpiece including a crankshaft, For example, there is one disclosed in Patent Document 1. As shown in FIG. 5, [0046] of Patent Document 1, this is movable in the axis (X) direction of the workpiece and in the orthogonal axis (Z axis) direction orthogonal to the axis (X) direction. A pin hole and a pin driven by an air cylinder are provided at the lower end of the main body of the pair of shoe assemblies fixed to the pair of supported arms, and when a workpiece is attached to or detached from the pair of shoe assemblies, etc. In addition, there has been disclosed a technique in which the main body portion of the shoe assembly is positioned at a specific position so that the positions of the main body portions of the pair of shoe assemblies fixed to the pair of arms are not displaced.
Japanese Patent Application No. 8-257889, FIG. 5, [0046]

  Since the positioning device of such a conventional tape wrap device has to be provided for each main body of each pair of shoe assemblies, the shoe assembly and the arm opening / closing clamp cylinder are assembled as an integrally replaceable arm unit. When a plurality of arm units are formed so as to machine a plurality of shaft surfaces of a workpiece including a crankshaft, the pin holes and air cylinders are driven for each main body of the plurality of shoe assemblies. The pins to be processed are necessary, the distance between the arm units in the axial (X) direction of the workpiece is increased, the number of arm units that can be processed simultaneously at a time is limited, and the cost is high.

  An object of the present invention is to assemble a shoe assembly and an arm opening / closing clamp cylinder as an integrally replaceable arm unit so that the arm unit can process a plurality of shaft surfaces of a workpiece including a crankshaft. When a plurality of arm units are formed, a plurality of arm units can be simultaneously positioned in the Z-axis direction toward the workpiece, and the distance between the arm units in the axis (X) direction of the workpiece can be reduced. An object of the present invention is to provide a positioning device for a tape wrap apparatus which can increase the number of arm units and which is low in cost.

For this reason, the present invention relates to a cassette body attached to a pair of linear slides fixed to the machine body so as to be movable in the Z-axis direction toward the workpiece, and to open and close around an arm opening / closing shaft attached to the cassette body. A pair of opening and closing arms arranged in a possible manner, and a pair of relatively rigid concave surfaces for pressing the abrasive coating surface of the relatively incompressible abrasive coating tape supported by the opening and closing arms against the shaft surface of the workpiece. Assembling the shoe assembly and the arm opening / closing clamp cylinder as an integrally replaceable arm unit, the arm unit consists of a plurality of arm units so as to process a plurality of shaft surfaces of a workpiece including a crankshaft. Each arm unit is supported so as to be movable / positionable in the axial direction (X-axis direction) of the workpiece with respect to the machine body,
One stopper, which is rotatably supported by the machine body and has a cross-sectional shape and has a curved side connecting two long straight sides and a long straight side, and each stopper is fixed to each cassette body and the stopper rotates. By providing a positioning device for a tape wrap device, which has a plurality of stopper shafts provided with stopper grooves that fit together and a drive device that rotates the one stopper. Solved the problem.

  In the present invention, with this configuration, the positioning in the Z-axis direction toward the workpiece of the plurality of arm units is fixed to the cassette body of each arm unit and the stopper provided with the stopper groove. Since a shaft and a drive device that rotates one stopper are provided, multiple arm units can be simultaneously positioned in the Z-axis direction toward the workpiece by simply rotating one stopper. It is possible to reduce the axial direction (X-axis direction) interval of the workpiece between each arm unit, increase the number of arm units that can be processed simultaneously at the same time, and provide a low-cost positioning device for a tape wrap device It became. In addition, when machining multiple workpieces with different machining positions in the axial direction (X-axis direction) of the workpiece, the stopper shaft does not change over when the position of the arm unit in the X-axis direction is changed. The changeover time can be greatly shortened.

  Embodiments of the present invention will be described with reference to the drawings. FIG. 1A is a schematic elevational side view of one arm unit of the positioning device of the tape wrap device according to the embodiment of the present invention. The stopper groove of the stopper shaft fixed to the cassette body of the arm unit is locked to the stopper. Shown in the released state, since the arm unit is machining the workpiece and the workpiece revolves, the stopper shaft can move freely in the Z-axis direction toward the workpiece together with the arm unit, and (b) does not machine the workpiece In the stop position, the stopper groove of the stopper shaft is shown in a state where the arm is opened while being locked so that the arm is not displaced by the stopper, (c) is an enlarged view of part C of (a), and (d) is (b). FIG. FIG. 2 is an explanatory view showing the locus of the center of the eccentric pin of the workpiece and the locus of the rotation axis of the arm in association with the revolution of the workpiece during machining of the workpiece in FIG. 1 (a), and FIG. 1A is a top view of an essential part of a positioning device of a tape wrap apparatus in which a plurality of arm modules of 1 (a) are mounted, and FIG.

  The positioning device of the tape wrap device according to the embodiment of the present invention shown in FIGS. 1 to 3 moves in the Z-axis direction toward the workpiece 2 on a pair of linear slides 11 and 12 fixed to the machine body 10 respectively. A cassette body 1 that can be attached, a pair of opening and closing arms 6 and 6 that can be opened and closed around an axis of rotation 3 of an arm attached to the cassette body 1, and a relatively non-supporting structure supported by the pair of opening and closing arms 6 and 6. A pair of relatively rigid concave surfaces 5 and 5 for pressing and pressing the abrasive-coated surface of the compressible abrasive-coated tape 7 against the shaft surface 4 of the workpiece 2, and an arm opening / closing clamp cylinder 13 is assembled as a replaceable arm unit 20. As shown in FIG. 3, the arm unit 20 includes a plurality of arm units 20 in FIG. 3A so as to machine a plurality of shaft surfaces of a workpiece including a crankshaft. The machine body is supported so as to be movable and positioned in the axial direction (X-axis direction) of the workpiece. The axial direction (X-axis direction) interval d1, d2 of each arm unit 20 is set corresponding to the axial direction interval of the workpiece including the crankshaft, and corresponds when the axial interval of the workpiece changes. Is set for each workpiece. The positioning device of the tape wrapping device is a stopper 8 rotatably supported by the machine body 10 and has one oval cross section and a shape having two long straight sides 17 and a curved side 18 connecting the long straight sides. A stopper 8, a driving device 14, which is an air cylinder fixed to the machine body 10 that rotates one stopper 8, and a stopper groove 19 that is fixed to each cassette body 1 and that the stopper 8 rotates and fits are provided. And a plurality of stopper shafts 9. The stopper shaft 9 and the stopper 8 are provided with a gap s between the lower long straight side 17 of the stopper 8 and the stopper shaft 9 when the stopper 8 is unlocked as shown in FIG. Reference numeral 15 denotes a connecting link between the driving device 14 and the stopper 8. In the state where the stopper of FIG. 1 (a) is unlocked, as shown in FIG. 2, the locus of the pin center of the workpiece 2 including the crankshaft during machining of the workpiece 2 is the workpiece 2 revolution that is the workpiece. 2a, 2b, 2c, 2d, and the trajectory of the rotating shaft 3 of the arms 6, 6 is guided by a pair of linear motion slides 11, 12, and follows a linear locus with 3a, 3c in the Z-axis direction. Follow. 2e is the journal center of the work piece 2, and 3e is the center of the arm rotation axis 3 when locked.

  In operation, in FIG. 1 (a), the stopper groove 19 of the stopper shaft 9 fixed to the cassette body 1 of the arm unit 20 is shown in a state in which the stopper 8 is unlocked. Since the workpiece 2 is clamped and the workpiece 2 revolves, the stopper shaft 9 can move freely in the Z-axis direction toward the workpiece 2 together with the arm unit 20. In FIG.1 (b), it shows in the stop position which does not process a workpiece | work. When the machining of the workpiece 2 is stopped, the phase is controlled so as to stop at the same phase as the phase at which the machining of the workpiece 2 is started. When the machining of the workpiece 2 is stopped, FIG. As shown in a), the stopper groove 19 of the stopper shaft 9 stops at a position where the stopper 8 is fitted when the stopper 8 is rotated. When the driving device 14 is operated to rotate the stopper 8 as shown in FIG. 1B, the stopper 8 is fitted, the stopper shaft 9 is locked, and the pair of arms 6 and 6 are opened and closed. The pair of shoe assemblies 5 and 5 fixed to the arms 6 and 6 are prevented from being displaced. L8 in FIG. 3 (a) is a range in which the stopper 8 can operate.

  In the positioning device of the tape wrap device according to the embodiment of the present invention, with this configuration, the positioning in the Z-axis direction toward the workpiece of the plurality of arm units is performed with one stopper and the cassette body of each arm unit. This is done by providing a stopper shaft that is fixed to the stopper shaft and a driving device that rotates one stopper. By simply rotating one stopper, multiple arm units can be attached to the workpiece. Can be positioned at the same time in the Z-axis direction, the interval between workpieces in the axis (X) direction can be reduced, the number of arm units that can be processed simultaneously is increased, and the cost is low The positioning device was provided. In addition, when a plurality of workpieces with different machining positions in the axial direction (X-axis direction) of the workpiece are processed and printed, even if the position of the arm unit in the X-axis direction is changed, the stopper shaft is not replaced. The changeover time can be greatly shortened.

(A) is a schematic side elevational view of one arm unit of the positioning device of the tape wrap device according to the embodiment of the present invention, which is fixed to the cassette body of the arm unit and the stopper groove of the stopper shaft is unlocked. Since the arm unit is processing the workpiece and the workpiece revolves, the stopper shaft can move freely in the Z-axis direction toward the workpiece along with the arm unit, and (b) is the stop position where the workpiece is not processed The stopper groove of the stopper shaft is shown in a state where it is locked and positioned by the stopper, the arm is opened so that the arm is locked so as not to be displaced, and (c) is an enlarged view of a portion C of (a). (D) is the D section enlarged view of (b). Explanatory drawing which shows the locus | trajectory of the eccentric pin center of a workpiece, and the locus | trajectory of the rotating shaft of an arm accompanying the workpiece revolution during the workpiece | work process of Fig.1 (a). (A) is a principal part top view of the positioning apparatus of the tape wrap apparatus which mounts several arm modules of Fig.1 (a), (b) shows the elements on larger scale seen from the B direction of (a).

Explanation of symbols

1: cassette body, 2: workpiece, 3: arm opening / closing axis, 4: shaft surface of workpiece, 5: shoe assembly, 6: opening / closing arm, 7: abrasive coating tape, 8: stopper, 9: Stopper shaft, 10: Machine body, 11, 12: Linear slide, 13: Clamp cylinder for arm opening / closing, 14: Drive device that is an air cylinder, 17: Long straight side, 18: Curved side, 19: Stopper groove, 20 : Arm unit

Claims (1)

A cassette body attached to a pair of linear motion slides fixed to the machine body so as to be movable in the Z-axis direction toward the workpiece, and a pair of doors arranged to be openable and closable around an arm opening and closing shaft attached to the cassette body Shoe assembly having a pair of relatively rigid concave surfaces that contact and press the abrasive-coated surface of the relatively incompressible abrasive-coated tape supported by the open / close arm against the shaft surface of the workpiece, and The clamp cylinder for opening and closing the arm is assembled as an integrally replaceable arm unit, and the arm unit is composed of a plurality so as to machine a plurality of shaft surfaces of a workpiece including a crankshaft. The machine body is supported so as to be movable / positionable in the axial direction (X-axis direction) of the workpiece,
One stopper, which is rotatably supported by the machine body and has a cross-sectional shape and has a curved side connecting two long straight sides and a long straight side, and each stopper is fixed to each cassette body and the stopper rotates. An apparatus for positioning a tape wrap apparatus, comprising: a plurality of stopper shafts provided with stopper grooves that fit together; and a driving device that rotates the one stopper.

Images