JPH0419044A - Work rotation locating device - Google Patents

Abstract

PURPOSE:To make automatic locating of a cylindrical work in the rotating direction by allowing a sensing part to sense the contour of the work rotated by a rotation drive part, thereupon controlling the rotation drive part, and determining the work position in the rotating direction. CONSTITUTION:A work 2 is supported on a work supporting part 1, and a work holding part 21 and a sensor element 30 are positioned over the work 2. Then a bracket 19 is sunk, and a locator 22 of this work holding part 21 is put in pressure contact with the work 2 at its upper part. When the level of the work 2 is sensed from the stroke of a cylinder 20 to serve judging the type of the work 2, a Selex (R) rotary 31 rotates, and a roller 28 or a one 29 to suit the width of a groove 25 in the work 2 is put in the sensing position. A signal is sent to the rotation drive part 4 of the work supporting part 1 to put it into operation, and thereby the work 2 is rotated, and the work 2 is stopped from rotating immediately when the roller 28 or 29 is inserted in the groove 25. Now the location of the work 2 is completed.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a workpiece rotational positioning device that can automatically position a cylindrical workpiece of soil in the rotational direction.

[Conventional technology] Workpiece processing 9m transport. Unmanned line systems such as flexible manufacturing systems have been developed as systems that automatically perform a series of tasks such as
Many workpiece processing operations such as transportation, installation, etc. are used.

It was necessary to accurately determine the mounting position and rotational direction of these works. However, when the workpiece has a cylindrical shape such as a differential bore case, it has been difficult to perform this positioning automatically. For this reason, in general, an operator visually checks the unevenness of the outer shape of the workpiece itself to determine its position.

[Issue to be solved by the invention] As shown above, when the workpiece is a cylindrical piece, the operator must rely on artificial means to determine the rotational direction for mounting the workpiece. This makes a completely unmanned line system difficult, and furthermore, human errors in determining the number of workpieces are unavoidable, and special measures must be taken to prevent mistakes. was there.

The present invention goes beyond the above-mentioned table and enables a completely unmanned line system by automatically positioning a cylindrical workpiece in the rotation direction (as well as eliminating the occurrence of human error). The subject is!!

[Means for Solving the Problems] In order to solve the above-mentioned problems, the present invention provides a work support section with a D-roll drive section that supports and rotates a workpiece, and a workpiece supporting section that supports the workpiece supported by the workpiece support section. a detection section that detects the outer shape of the rotating workpiece and controls the rotational drive section of the workpiece support section; A tank configuration was adopted that determined the position in the rotational direction.

[Function] When a cylindrical workpiece is supported by the workpiece support part and rotated, and a predetermined outer shape of the workpiece is detected by the detection part, the rotation of the workpiece is stopped. The supported workpiece is positioned at a predetermined position in its rotational direction.

[Embodiments] The present invention will be explained in detail below based on embodiments shown in the drawings.

The embodiment shown in the drawings is an HW that performs positioning in the rotational direction when a cylindrical workpiece is a differential gear case (hereinafter referred to as a differential case).

A groove is formed on the outer periphery of the differential case to serve as a reference for positioning in the rotational direction, but the width of this groove varies depending on the type of differential case. ! The height of the entire case also differs.

The embodiment shown in the drawings corresponds to the above-mentioned multi-fI type differential case, and is configured to automatically determine the type and position the differential case in its rotational direction.

In the figure, numeral 11 indicates a workpiece support M for supporting and rotating the workpiece 2, and is rotatably provided on the base 3. This work support part 1 rotates the clutch motor into a rotation drive part 4.
98 is a bearing, 9 is a case, and 1o is provided on the base 3 and rotates through the gears 5, 6 and the gear shaft 7 by the drive of the rotary drive unit 4.
A fixed roller 11 supports the side surface of the workpiece 2 supported by the workpiece support section 1, and 11 is a clamp roller that clamps and positions the workpiece 2 from the fixed roller 10. This clamp roller 11 is rotated by a rack 12. It is provided on an operating rod 14 that rotates 90 degrees by a pinion 13, and as the operating rod 14 rotates, it comes into pressure contact with the side surface of the workpiece 2 and is pressed against the side surface of the workpiece 2. 15 is a rack 12
It is a cylinder that reciprocates.

16 (the workpiece 2 side supported by the workpiece support part 1 on the base 3 via the guide rail 17); 18 (the slider 16 is moved forward and backward,
This is the cylinder that makes you retire.

A bracket 19 is attached to the forward side of the slider 17, and this bracket 19 is reciprocated in the vertical direction by a cylinder 20. Reference numeral 21 denotes a work holding part provided at the tip of the bracket 19 facing downward, and the top of the work holding part 21 presses the top of the work 2. A locator 22 is provided. The work holding part 21 is pressed against the upper part of the work 2 and supported from above by lowering the bracket 19 by the operation of the cylinder 20. The workpiece holding part 21, the bracket 19, and the cylinder 20 form a type discrimination part 23 for the workpiece 2, which detects the stroke amount of the cylinder 20 with a sensor built into the cylinder 20 and determines the height of the workpiece 2. By detecting the height, it has a function of determining the type of workpiece 2 and instructing the setup for selecting a roller of the detection section to be inserted into a groove of the workpiece 2, which will be described later.

24 supports work! This is a detection unit that controls the rotation drive unit 4 of the workpiece support unit 1 by detecting the position N of the groove 25 formed on the circumference of the workpiece 2 supported by the workpiece I11, and is supported by the bracket 19. .

The detection unit 24 is fixed on a bracket 19 and is supported by a cylinder 26 that strokes in the vertical direction and a joint 27 provided on the rod of the cylinder 26 so as to extend and rotate in the vertical direction. A detection body 30 has a plurality of different slot insertion openings 528, 29 arranged in the rotational direction f according to the groove 25 having a specific groove width, and the detection body 30 is operated in response to a command from the type discriminating unit 23. Rotate the roller 28 to match the groove width of the groove 25 of the workpiece 2.
Alternatively, the SELEX rotary 31 selects and sets up the roller 29, and the roller 2
8 or 29 is inserted into the groove 25 of the work 2 and rotates the work 2 until the roller 28 or 29 is inserted into the groove 25. 4 and a sensor 32 that controls the sensor. All the operations of the above-mentioned parts are automatically performed by electrical control means. 33 is dog, 34
is a spring.

Next, the operation of the above embodiment will be explained.

First, the cylinder 18 is operated to move the slider 16 backward (to the right in the figure), and a predetermined workpiece 2 is placed on the workpiece support section 1 . Next, operate the cylinder 15 to
2 to the left in the figure, the pinion 13 rotates clockwise, and the clamp roller 11 provided at the tip of the operating rod 14, which rotates in the same direction as the pinion 13 rotates, is attached to the side of the work 2. The work 2 is rotatably held between the clamp roller 11 and the fixed roller 10 provided on the base 3.

After the workpiece 2 is supported on the workpiece support part 1 soil in this way, the cylinder 18 is operated to move the slider 16 forward (leftward in the figure), and the workpiece holder provided on the bracket 19 attached to the forward side of the slider 16 After positioning the part 21 and the detection body 30 above the workpiece 2, first operate the cylinder 20 to check the bracket 19v! The workpiece 2 is lowered, and the locator 22 provided at the tip of the workpiece holding part 21 is brought into pressure contact with the upper part of the workpiece 2. When the height of the workpiece 2 is detected based on the stroke amount of the cylinder 2o at this time and the type of the workpiece 2 is determined, the signal is transmitted to the SELEX rotary 31 of the detection unit 24, and the SELEX rotary 31 rotates,
Preparations are made to position the O-roller 28 or roller 29 that matches the groove width of the groove 25 of the work 2 supported by the work support 1 to the detection position.

After crotching the roller in this way, the next step is to use Shinonda 26v! The detector 30 is lowered by operation. If the roller 28 or 29 is inserted into the groove 25 of the workpiece 2 due to the lowering of the detection body 30, it becomes clear that the workpiece 2 is correctly positioned in a predetermined direction. In addition, if the roller 28 or roller 29 is not inserted into the groove 25 of the workpiece 2 and is placed on the workpiece 2, the sensor 3
2 detects and sends a signal V! to the rotation drive section 4 of the workpiece support section 1. By transmitting and driving this, the workpiece 92 is rotated, and the roller 28 or the roller 29 is inserted into the groove 25 of the workpiece 2.
The rotation of the workpiece 2 is immediately stopped when the workpiece 2 is inserted. In this state, the work 2 is correctly positioned in the predetermined direction, and the positioning of the tool 920 is completed.

When the positioning of the workpiece 2 is completed in this way, the cylinder 18 is operated to move the slider 16 backward, and the workpiece 2 is
Start preparations for installation.

The above operations are carried out automatically by entirely electrical control means as described above.

In the above embodiment, the outer shape of the workpiece 2 is detected by inserting the roller 28 or the roller 29 into the groove 25 formed on the outer surface of the workpiece 2. Of course, it is also possible to use an optical sensor, for example.

Further, although the above embodiment shows a positioning device for a case where the workpiece is a differential case, it goes without saying that similar means can be used to position a cylindrical workpiece other than a differential case.

[Effects of the Invention] As described above, according to the present invention, a workpiece is supported by a workpiece supporting section, the workpiece is rotated, and the rotation of the workpiece is stopped when a predetermined external shape of the workpiece is detected by a detection section. The workpiece supported by the workpiece support part is positioned in the direction of the determined PFT foot in the rotation direction.
Moreover, this operation can be performed automatically, so even for cylindrical workpieces such as differential cases, the rotational positioning, that is, the installation, can be automated. Since it is possible to completely unmanned line systems such as systems and transfer machines, work efficiency can be improved, and work reliability and safety can be achieved.

[Brief explanation of drawings]

Figure 1 is a front view showing one embodiment of the present invention. 1... Work support part 2... Work 4... Rotation drive part 24... Detection part 25... Groove part 26.
...Cylinder 2829...0-ra 30...Detecting body 31...SELEX rotor 32...Sensor patent applicant Hitachi Seiko Co., Ltd. Agent Patent attorney Tamotsu Kobayashi

Claims (1)

[Claims] It consists of a work support section equipped with a rotation drive section that supports and rotates the workpiece, and a detection section that detects the outer shape of the workpiece supported by the workpiece support section and controls the rotation drive section of the workpiece support section. A rotational direction positioning device for a workpiece, which determines the rotational direction position of the workpiece by detecting the outer shape of the workpiece rotated by the drive of the part with the detection part and controlling the rotational drive part.