JPH0441286Y2 - - Google Patents

Description

[Detailed description of the invention] (a) Technical field of the invention This invention relates to a device for measuring the outer diameter and runout of a camshaft, etc. of an automobile engine.

(b) Prior art and problems First, a configuration diagram of a conventional device is shown in FIG.

In Fig. 3, 1 is the drive mechanism, 2 is the detector mount, and 3
A is the detector, 4A is the arm, 5 is the workpiece, 6A and 6B are the workpiece holders, 7 is the motor, 8 is the base, 9
is a column.

A motor 7 and a work holder 6B are fixed to the base 8, and a drive mechanism 1 is attached to the column 9 with a feed screw (not shown) or the like.

A work holder 6A is connected to the motor 7.
A workpiece 5 is held by a workpiece presser 6A and a workpiece presser 6B. Therefore, by rotating the motor 7, the workpiece 5 can be rotated.

A detector mount 2 is connected to the drive mechanism 1, and a detector 3A is attached to the detector mount 2.

An arm 4A that comes into contact with the workpiece 5 to measure the outer diameter of the workpiece 5 is attached to the detector 3A.

By operating the drive mechanism 1, the drive mechanism 1 moves up and down and left and right in FIG.

Thereby, the drive mechanism 1 can be moved along the workpiece 5.

Therefore, since the arm 4A also moves along the workpiece 5, the outer diameter and deflection of the workpiece 5 can be measured over the entire length of the workpiece 5 by reading the position of the arm 4A with the detector 3A.

Next, a side view of FIG. 3 is shown in FIG. 4.

3B in Fig. 4 is a detector, 4B is an arm,
Other details are the same as in Figure 3.

The detector 3B is hidden in Figure 3 because it is on the back side of the detector 3A, but the arm 4B is also attached to the detector 3B, and the arms 4A and 4B come into contact with each other so as to sandwich the workpiece 5. Measure the outer diameter and runout.

In the conventional device shown in FIGS. 3 and 4, the drive mechanism 1, the detector mount 2, the detector 3A, and the detector 3B are suspended from the column 9, and the drive mechanism 1 is not operated. Since the vibrations caused when the workpiece 5 is stopped and the vibrations from the motor that drives the drive mechanism 11 are directly transmitted to the arms 4A and 4B, there is a problem in that the measurement accuracy of the outer diameter and runout of the workpiece 5 deteriorates. .

(c) Purpose of the invention This invention connects the detector mount 2 and the drive mechanism 1 via a spring, and
By adopting a guide and a guide receiver that hold the detector 3A and the detector 3B on the base 8, the vibration of the drive mechanism 1 attached to the column 9 is not directly transmitted to the arms 4A and 4B. The present invention provides an apparatus for measuring outer diameter and runout.

(d) Example of the invention First, a configuration diagram of an example of this invention is shown in Fig. 1.

In Fig. 1, 11 is a drive mechanism, 12 is a detector mounting base, 13 is a spring, 14 is a guide, 15A and 15B are guide receivers, and the other parts are the third
Same as the figure.

The drive mechanism 11 shown in FIG. 1 operates in the same manner as the drive mechanism 1 shown in FIG. 3, and moves the detector 3A and the detector 3B along the workpiece 5.

In FIG. 3, the drive mechanism 1 and the detector mount 2 are directly connected, but in FIG. 1, the drive mechanism 11 and the detector mount 12 are connected via a spring 13.

The guide 14 is supported by a guide receiver 15A and a guide receiver 15B so as to cover the workpiece 5, and the detector mounting base 12 can be placed at any position on the guide 14.

That is, the drive mechanism 11 moves the detector mount 12 via the spring 13, but the weight of the detector mount 12 is placed on the guide 14.

Next, the side view of FIG. 1 is shown in FIG. 2.

As is clear from FIG. 2, the detector mounting base 12
has a V-groove, and the upper part of the guide 14 is shaped to fit into this V-groove. Therefore, the weight of the detector mounting base 12 can be supported while completely resting on the guide 14, and vibrations caused by driving the drive mechanism 11 are not transmitted to the detectors 3A and 3B.

(e) Effects of the invention According to this invention, the detector mounting base is supported by a guide and is connected to the drive mechanism via a spring, so even if the detector is moved by the drive mechanism, This has the advantage that the vibration of the drive mechanism is not directly transmitted to the detector.

[Brief explanation of the drawing]

Figure 1 is a configuration diagram of an embodiment according to this invention, Figure 2
The drawings are a side view of FIG. 1, FIG. 3 is a configuration diagram of a conventional device, and FIG. 4 is a side view of FIG. 3. 1... Drive mechanism, 2... Detector mounting base, 3A...
...Detector, 3B...Detector, 4A...Arm, 4
B...Arm, 5...Work, 6A...Work holder, 6B...Work holder, 7...Motor, 8...
Base, 9... Column, 11... Drive mechanism, 12
...Detector mounting base, 13...Spring, 14...
...Guide, 15A...Guide receiver, 15B...Guide receiver.

Claims (1)

[Claims for Utility Model Registration] The work 5 is held by the work holder 6A and the work holder 6B, the work 5 is rotated by the motor 7, and the work is held by the arm 4A attached to the detector 3A and the arm 4B attached to the detector 3B. 5, arm 4A
In a device that moves detector 3A and detector 3B along arm 4B along workpiece 5 and measures the outer diameter and runout of workpiece 5 from the position of arm 4A and the position of arm 4B, detector 3A and detector 3B The detector mounting base 12 for mounting the detector mounting base 12 and the drive mechanism 11 for moving the detector mounting base 12 are connected via a spring 13, and the detector mounting base 12 is placed on a guide 14 that covers the workpiece 5, and the drive mechanism 11, the detector mounting base 12 moves on a guide 14.