JPH0248201Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial field of application This invention is used when combining cylindrical workpieces with other parts, which are assembled with relative positioning in the rotational direction by spline fitting, key fitting, etc. Alternatively, the present invention relates to a phase matching device that adjusts the phase of the work in advance so that the phase of the work becomes a desired state when processing is performed.

Conventional technology When a cylindrical workpiece is connected to a shaft-like part by spline fitting, key fitting, etc., the phase of the workpiece is adjusted to the desired phase in advance when it is assembled to the shaft-like part or when the workpiece is processed. It is necessary to adjust so that the condition is as follows.

Conventionally, phase alignment of workpieces has been manually performed by visual inspection by an operator. However, in recent years, automation of parts assembling devices and processing devices has progressed, and it is necessary to automatically align the phases of workpieces.

To automatically adjust the phase of the workpiece, place the workpiece on a rotatably supported rotary table, then clamp the workpiece with a clamp mechanism, and then move the rotary table with the workpiece clamped. Some machines rotate the workpiece to match the phase of the workpiece to a desired state, and when the phase matching is completed, the clamp is released and the workpiece is chucked by a chuck mechanism or the like and transported to the next process.

Problems that the invention aims to solve With conventional phasing, the relative position of the workpiece to the rotary table becomes unstable and the center shifts, so even if the workpiece is phased accurately, it is difficult to unclamp the workpiece. When transporting a workpiece to the next process, if the center of the workpiece and the chuck mechanism is misaligned when the workpiece is chucked, the workpiece will shift and the phase will change, resulting in low reliability.

Means to Solve the Problem This invention has a support base that rotatably supports the workpiece, a V-groove formed on the surface facing the workpiece, and pressure rollers that press the workpiece on two sides of the V-groove, respectively. a pressing stopper having a fan shape, a rotating stopper that presses a workpiece with its circular arc surface and clamps the workpiece with a pressing roller of the stopper, a rotating mechanism that rotates the rotating stopper, and a rotating mechanism that rotates the rotating stopper, A phasing device is constituted by a master pawl that is supported in a vertically movable manner and that fits into a positioned workpiece to align the phase of the workpiece.

Function: This device presses the workpiece together from three sides using the pressing roller of the pressing stopper and the circular arc surface of the rotating stopper to center and hold the workpiece.Then, the master claw is lowered and fitted onto the workpiece, and the two are fitted well. When they do not match, the rotating stopper is rotated by the rotating mechanism to rotate the workpiece, and when the workpiece and master claw match, they are fitted together to align the phases of the workpieces.

Embodiment FIGS. 1 to 3 are drawings showing an embodiment of the present invention, in which the present invention is applied, for example, to phase alignment of a cylindrical workpiece 1 having splines 2 formed on its inner peripheral surface.

In the figure, reference numeral 3 denotes a support base that rotatably supports the workpiece 1, and a column body 5 having a recess 4 formed on its upper surface.
A support table 6 having a T-shaped cross section is rotatably mounted on the base 8 via a bearing 7, and the support 5 is fixed at a predetermined position on the base 8 with bolts or the like. Further, the upper surface of the support table 6 is a smooth surface, and the workpiece 1 is placed on the upper surface.

Reference numeral 9 denotes a pressing stopper for positioning and holding the workpiece 1, which is disposed on the side of the support base 3, and holds the workpiece 1 in position.
A V-groove 10 is formed on the front surface facing the V-groove 1.
A space 11 is formed by bifurcating the front part where 0 is formed. Two pressure rollers 12 and 13 are accommodated in the space 11, and the pressure rollers 1
V groove 1 of stopper 9 by pressing a part of the circumferential surface of 2 and 13
It is rotatably attached to protrude forward from two surfaces 10a and 10b of 0. This pressing stopper 9 is slidably mounted on a slide table 14 installed flush with the upper surface of the support table 6 of the support base 3, and is mounted using an appropriate means such as a cylinder (not shown).
It is configured so that it can be moved back and forth. 15,1
Reference numeral 5 denotes a guide plate fixed on the slide table 14, which guides the pressing stopper 9 and prevents it from shifting in the lateral direction.

Reference numeral 16 denotes a turning stopper, which is formed into a substantially sector shape and is arranged to face the pressing stopper 9 with the workpiece 1 in between, and is supported in a rotatable manner at approximately the same height as the workpiece 1 as described later, so that it can be rotated on an arcuate surface. Workpiece 1 is pressed at 16a.

Reference numeral 17 denotes a turning mechanism for turning the turning stopper 16. A bearing housing 18 is fixed on the base 8 adjacent to the support stand 3, and a turning shaft 20 is rotatably erected to the bearing housing 18 via bearings 19, 19. An output shaft 22 of a swing motor 21 which is held and fixed to the lower surface of the bearing housing 18 through the base 8 is coupled to the lower end of the swing shaft 20.
Then, the upper end of the pivot shaft 20 is connected to the pivot stopper 16.
The shaft 20 is passed through the shaft 20, connected with a key 23, and integrated with a nut 24 tightened to the upper end of the pivot shaft 20.
Therefore, when the output shaft 22 of the turning motor 21 turns, the turning shaft 20 turns, and the turning stopper 16 integrated therewith also turns. In addition, the rotation stopper 16 is omitted.
It rotates within a range of 90 degrees, and the respective rotation ends are detected and controlled by sensors 25 and 26 attached to the bearing housing 18.

Reference numeral 27 denotes a master claw, which has a large-diameter fitting portion 27b formed at the lower end of the shaft portion 27a, and a spline 28 that fits with the spline 2 of the workpiece 1 is formed on the outer periphery of the fitting portion 27b.

Reference numeral 29 denotes a control means for moving the master claw 27 up and down and within a certain range.An elevating cylinder 31 is provided on a support arm 30 fixed to the base 8 via a bracket 30a, and the piston rod 32 of the elevating cylinder 31 is A lifting block 33 is attached to the tip. A U-shaped support block 34 is attached to the lifting block 33, and the support block 34 rotatably supports a rotating shaft 37 via bearings 35, 35, 36, and 36. The base of the movable arm 38 is integrally connected via a key 39. The shaft portion 27a of the master claw 27 is attached to the tip of the rotating arm 38 so as to be non-rotatable but movable up and down, and a spring 40 is inserted between the rotating arm 38 and the fitting 27b of the master claw 27 while being compressed. The master claw 27 is always pressed downward by the rotating arm 38 so that the master claw 27 projects downward from the rotating arm 38. Further, a hydraulic motor 41 is attached to the lower end of the support block 34, and its output shaft 4
1a is coupled to a rotating shaft 37. 42 is a proximity switch attached to the tip of the rotating arm 38 via a bracket 43;
When the master claw 27 protrudes downward from the rotating arm 38, the detection block 44 is detected and turned ON, and the master claw 27 is relatively raised. It is designed to turn off when the detection block 44 leaves. Reference numeral 45 denotes a rail installed along the rotational trajectory of the master claw 27, which is aligned at the same height as the top surface of the support stand 3, and conveys the workpiece 1. 46 is an ejector that carries out the work 1 from the rail 45 at a predetermined position.

In the above configuration, the operation will be described. The workpiece 1 to be phase-aligned is placed on the support table 6 of the support stand 3, and the circumferential surface of the workpiece 1 is placed on the circular arc surface of the rotation stopper 16.
6a. Next, the pressing stopper 9 is advanced and the pressing roller 1 provided on the pressing stopper 9 is
2 and 13 to the workpiece 1, and press the pressing rollers 12,
13 and the rotation stopper 16 press the work 1 from three sides to position and hold the work 1.

When the workpiece 1 is positioned, the lifting cylinder 31
is extended to lower the lifting block 33,
The support block 34, rotating arm 38, and master claw 27 are lowered together with the lifting block 33, and the fitting portion 27b of the master claw 27 is fitted with the workpiece 1. At this time, if the master claw 27 and the workpiece 1 are in phase, the fitting portion 27b of the master claw 27 and the workpiece 1 will fit together without resistance, and the master claw 27 will be positioned relative to the rotating arm 38. remains unchanged, the proximity switch 42 turns on and issues a phase matching completion signal.

Also, when the master claw 27 is lowered, the master claw 27
If the positions of the master claw 27 and the workpiece 1 are not aligned, the master claw 27 stops descending when it hits the workpiece 1, and rises relative to the rotating arm 38, whereby the detection block 44 also rises. Proximity switch 42
turns OFF, detecting that the phases are not matched.
Then, after the rotating arm 38 is lowered to a predetermined position, the rotating motor 21 of the rotating mechanism 17 operates to rotate the rotating shaft 20 to rotate the rotating stopper 16, and the workpiece 1 is slowly rotated by the rotating stopper 16. . When the workpiece 1 rotates and the phases of the master claw 27 and the workpiece 1 match, the spring 40 lowers the master claw 27 to fit the fitting portion 27b of the master claw 27 into the workpiece 1.
When the master claw 27 and the workpiece 1 are fitted, the detection block 44 approaches the proximity switch 42, and the proximity switch 42 detects this and turns ON to issue a phase matching completion signal.

When the phase alignment between the master claw 27 and the workpiece 1 is completed as described above, the rotation motor 2 of the rotation mechanism 17
1 starts its operation, or continues its operation, rotates the rotation stopper 16, slides it between it and the workpiece 1 whose rotation is prevented by the master claw 27, and the workpiece 1
escape from

When the swing stopper 16 escapes from the workpiece 1 and swings to a predetermined position, the pressing stopper 9 retreats and leaves the workpiece 1, and then the hydraulic motor 41 of the control means 29 operates to rotate the rotating shaft 37 and rotate the rotating arm. 38, and thereby the master claw 2
7 is moved, and the workpiece 1 is slid on the rail 45 and transported to the next process.

When the transfer is completed, the hydraulic motor 41 stops,
Subsequently, the lifting cylinder 31 is shortened to raise the lifting block 33, and the support block 34, rotating arm 38, and master claw 27 are raised, and the master claw 27 is removed from the workpiece 1. Next, hydraulic motor 4
1 rotates in the opposite direction to return the rotating arm 38 to its original position. At the same time, the swing motor 21 reversely rotates to return the swing stopper 16 to its original position in preparation for the next operation.

The phase of the workpiece 1 is adjusted by repeating the above-described operation.

In the above embodiment, the workpiece 1 is transported with the master claw 27 fitted onto the workpiece 1 by the rotating arm 38, but the workpiece 1 may be transported by other appropriate means. However, by implementing the above embodiment, the workpiece 1 can be reliably transported without causing a phase shift, which is convenient.

Further, if not only the pressing stopper 9 but also the turning stopper 16 is configured to be movable in the front and back direction, the workpiece 1 can be positioned concentrically even if the size of the workpiece 1 changes.

Effects of the invention This invention positions the workpiece by pressing it from three sides with a pressing stopper and a turning stopper, so the workpiece is always held at the same position, so the workpiece can be accurately aligned with the master claw. Furthermore, when the master claw and the workpiece are fitted together, the rotation stopper rotates the workpiece to ensure that the master claw and the workpiece fit together, and the phase alignment of the workpieces can be performed reliably and easily. Furthermore, since the swing stopper is fan-shaped, the swing stopper can be removed from the workpiece and the workpiece can be easily transported.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional front view of a phasing device according to the present invention, FIG. 2 is a plan view of the phasing device, and FIG. 3 is a longitudinal sectional side view of the phasing device. DESCRIPTION OF SYMBOLS 1...Workpiece, 3...Support stand, 9...Press stopper, 10...V groove, 12, 13...Press roller, 16...Swivel stopper, 17...Swivel mechanism,
27... Master claw, 29... Control means.

Claims (1)

[Scope of utility model registration request] A support base that rotatably supports a workpiece; a pressing stopper having a V-groove formed on a surface facing the workpiece and pressure rollers for pressing the workpiece on two sides of the V-groove, each having a fan shape; A swing stopper that presses the workpiece with an arcuate surface and clamps the workpiece with a pressing roller of the stopper; a swing mechanism that swings the swing stopper; and a workpiece that is vertically movably supported and positioned above the workpiece to be positioned. A phasing device for a cylindrical workpiece, comprising: a master claw that fits into the master claw to perform phasing of the workpiece.