JPS6227292Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to a run-out measuring device for a strain relief press, and its purpose is to measure run-out with high accuracy without being affected by the rotation accuracy of the holder on which the workpiece is mounted. It is to make it possible to do it.

In strain relief presses that remove strain by attaching the workpiece to a rotatable holder, the holder is supported by special bearings so that it can receive the load that acts on the holder when removing strain from the workpiece. As a result, the rotational accuracy of the holder is poor, and the workpiece shakes due to the influence of the rotational accuracy of the holder, resulting in a problem in which highly accurate shakeout measurement cannot be performed.

The present invention has been devised in view of the above-mentioned conventional problems, and embodiments thereof will be described below with reference to the drawings. In FIG. 1, reference numeral 10 indicates a base of the strain relief press, and on this base 10, first and second support stands 11 and 12 are installed at a predetermined interval. A rotary holder 13 is rotatably supported on the first support 11 around a horizontal axis via a cross roller bearing 51 that can receive a press load and a clamp load, and a reference ring 14 is rotatably supported on the holder 13. Ball bearing 52 with good precision
It is rotatably supported concentrically through. Holder 1
A workpiece reference surface 15 is formed at one end of 3, and a plurality of positioning pins 16 are provided to protrude from this reference surface 15. A workpiece W having a flange portion W1 that is joined to the reference surface 15 and engaged with the positioning pin 16 is attached to the holder 13, and a shaft portion W2 of this workpiece W is attached to the reference ring 14. It penetrates through and protrudes from the holding body 13.

A support shaft 17 is fitted into the second support stand 12 so as to be slidable along the rotational axis of the holder 13, and a backup cylinder 1 is fitted onto the support shaft 17.
A movable body 19 formed with 8 is slidably supported. At the tip of the support shaft 17 is a piston 2 which is slidably fitted into the backup cylinder 18.
A piston body 21 having a shape of 0 is attached, and a spring 22 is inserted between the piston body 21 and the movable body 19 to bias the piston body 21 forward. A back-up face plate 23 for crimping and clamping the flange portion W1 of the workpiece W to the reference surface 15 is rotatably supported on the piston body 21 via a bearing 24. Reference numeral 25 designates a pressure oil supply hole drilled in the actuating body 19, through which high pressure oil is appropriately supplied to the backup cylinder 18, and the piston body 21 is moved in the same direction as the action direction of the spring 22. It is designed to press in the direction (forward).

A pair of link members 2 are provided on both sides of the moving body 19.
Similarly, one end of a pair of link members 28 is pivotally connected to both sides of the second support base 12 by a support pin 29, and each of these link members 26, 28 is The end is connecting pin 3
They are connected to each other via 0. Link member 2
An operating lever 31 for bending and extending the link members 26 and 28 is coupled to the other end of the operating lever 3.
1, the movable body 19 is moved forward and backward together with the support shaft 17.

In FIGS. 2 and 3, a mounting body 33 is fixed to the tip of the reference ring 14, and this mounting body 33 is prevented from rotating with respect to the first support base 11 by a rotation stopper pin 34. . Mounting body 3
A support shaft 35 is rotatably supported on the support shaft 35, and a contact roller 3 contacts the shaft portion W2 of the workpiece W at the tip of an arm 36 fixed to one end of the support shaft 35.
7 is supported. A plate 38 is fixed to the mounting body 33, and a tension spring 40 is inserted between the plate 38 and an arm 39 fixed to the other end of the support shaft 35.
The contact roller 37 is urged in the direction of contacting the shaft portion W2 of the work W by the generated force of 0. A dial indicator 41 that indicates the amount of deflection of the shaft portion W2 of the workpiece W is fixed to the plate 38, and the arm 39 is operatively linked to the contact 42 of this indicator 41 via a swing link 43.

In addition, 45 is a pressurizing element which pressurizes the shaft part W2 of the work W, and this pressurizing element 45 is raised and lowered by the pressurizing cylinder 46. Further, numeral 47 is a regulation block that regulates the pressurizing stroke of the pressurizing element 45, and an inclined surface 48 is formed on the upper surface of this regulation block 47.
It is slidably supported by a guide stand 49 fixed to the first support stand 11 .

Next, the operation of the device of the present invention with the above configuration will be explained.

As shown by the two-dot chain line in FIG. 1, in the original position where the back-up face plate 23 is held at the retreat end, the reference surface 15 is set at an angle such that the flange portion W1 of the workpiece W to be deformed engages with the positioning pin 16. is pushed to a position where it abuts, and is held by the holder 13. In this state, when the operating lever 31 is operated in the direction in which both links 26 and 28 extend, the actuating body 1
9. The support shaft 17 and the backup face plate 23 are integrally advanced toward the workpiece W. Both links 2
When 6 and 28 are operated to the position where they are lined up in a straight line,
The backup face plate 23 comes into contact with the flange portion W1 of the workpiece W by the force of the spring 22, and the flange portion W1 is thereby pressed against the reference surface 15 with a relatively small contact pressure by the spring 22, and is clamped to the holder 13 for positioning. be done.

Subsequently, the workpiece W is rotated together with the rotary holder 13 and the backup face plate 23 to measure runout, and the runout of the shaft portion W2 is measured by the contact roller 37 and the arm 3.
6, support shaft 35, arm 39 and swing link 4
3 through the toucher 42 of the dial indicator 41
and is instructed by the indicator 41. In this case, the workpiece W swings due to the backlash of the cross roller bearing 51 that supports the holder 13, but the contact roller 37 and the dial indicator 4
1 is provided on the mounting body 33 that is fixed to the reference ring 14 which is rotatably supported concentrically on the holder 13, so that the vibration due to the rotational error of the holder 13 is not transmitted to the dial indicator 41, and the workpiece is Only the true deflection of the shaft portion W2 with respect to the flange portion W1 is indicated by the indicator 41. When the workpiece W is rotated once in this way,
The maximum point of deflection is detected, and the maximum point is positioned at a position facing the pressurizing element 45, and the regulation block 47 is positioned at a predetermined position according to the maximum deflection amount.

Thereafter, when a start button (not shown) is operated, high pressure oil is supplied to the backup cylinder 18 and the pressurizing cylinder 46. As a result, the backup face plate 23 firmly presses and clamps the flange portion W1 to the reference surface 15 by hydraulic pressure, and the reaction force of the clamping force is supported by the link mechanism. At the same time, the pressurizing element 45 is lowered to a position where it abuts against the regulation block 47, whereby the shaft portion W2 of the workpiece W is pressurized by a predetermined amount, and the shaft portion W2 is pressed against the flange portion W1.
Distortion is removed so that the runout of 2 is ensured within a specified accuracy. The pressurizing force acting on the work W during this strain relief is backed up by the back up face plate 23.

In the above embodiment, an example was described in which the deflection of the workpiece W is measured using the dial indicator 41, but a differential transformer or the like that generates an electrical output according to the deflection may also be used.

As described above, in the present invention, a reference member is rotatably supported concentrically on a rotatable holder on which a workpiece is mounted, and the reference member contacts the shaft of the workpiece to prevent the workpiece from wobbling due to the rotation of the holder. The structure has a fixed mounting body with a contact member that displaces accordingly and a measuring device that measures the amount of runout of the workpiece based on the displacement of this contact member, so even if the rotation accuracy of the holder is poor, the rotation accuracy can be maintained. It is now possible to measure only the run-out of the workpiece shaft with high precision without being affected by it, and this has the feature that it is possible to perform highly accurate distortion removal work.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention; FIG. 1 is a sectional view of the device of the present invention, FIG. 2 is a view taken in the direction of the arrow in FIG. 1, and FIG. FIG. DESCRIPTION OF SYMBOLS 11... Support stand, 13... Holding body, 14... Reference member (reference ring), 23... Backup face plate, 33... Mounting body, 37... Contact member (contact roller), 41... Measuring instrument ( dial indicator), W...Work.

Claims (1)

[Scope of utility model registration request] A workpiece is mounted on a holder that is rotatably supported on a support base via a first bearing, the holder is rotated to measure the runout of the workpiece, and the workpiece is corrected according to the amount of deflection. In the press, a reference member is rotatably supported concentrically on the holding body via a second bearing, and a mounting body that is prevented from rotating with respect to the support base is fixed to the reference member;
A contact member that comes into contact with the shaft of the workpiece and is displaced in response to the workpiece runout due to rotation of the holder, and a measuring device that measures the amount of workpiece runout based on the displacement of the contact member are attached to this mounting body. A swing device.