JPS5935763Y2 - measurement table - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a measurement table, and more particularly to a measurement table equipped with a driving source.

Generally, when measuring an object to be measured, for example, measuring surface irregularities, a slidable workpiece is provided on a base, and a contact is brought into contact with the surface of the workpiece on this workpiece. This is done by sliding the stage and moving the object to be measured.

In this case, a motor is used as a sliding means for the conventional stage, or a coil spring or the like is connected to one end of the stage and the restoring force of this spring is utilized.

However, with the former method, the vibrations of the motor propagate to the stage, reducing measurement accuracy and making the entire device large-scale.Also, with the latter method, the stage can slide in an extremely short period of time. Not only is it impossible to make accurate measurements because the sliding movement returns, but the sliding speed is also very fast at the beginning, then slows down, and is not constant, so it is difficult to make measurements that fully correspond to the irregularities of the object to be measured. It had the disadvantage of being difficult.

An object of the present invention is to provide a simple measuring table that can return the stage at a slow speed without requiring power from a motor or the like, and that enables accurate measurement of surface irregularities.

The present invention connects the stage and the base with a bent leaf spring, and uses the restoring force of the leaf spring as a driving source to move the stage at a very slow speed. It is an attempt to achieve a goal.

An embodiment of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 shows a first embodiment of the present invention, in which two rails IA, IA are laid on the upper surface of a long substrate 1, and a stage is placed along these rails IA, IA. 2 is placed so as to be able to slide in the longitudinal direction.

This stage 2 has a groove 2A on the bottom surface into which the rail 1A fits;
2A is formed, and the object to be measured 10 is placed on the upper surface.

One end of the base 1 and the stage 2 are connected by a leaf spring 3.

Namely. The leaf spring 3 has one end connected to the base 1 and the stage 2.
The base 1 is inserted into the openings IB and 2B that are both bored at the ends of the base 1, and inserted into any pair of pin holes 3A and 3B among the plurality of pairs of pin holes 3A and 3B formed at both ends of the base 1, respectively. Locking pins 4, 4 are inserted through the stage 2, and the plate spring 3 is fixed to the base 1 and the stage 2.

On this occasion. The leaf springs 3 are connected in a U-shaped curved state, and the effective length of the leaf springs 3 is appropriately determined by selecting the insertion positions of the pins 4 and 4 into predetermined pin holes 3A and 3B. .

Also, due to the curved biasing force of this leaf spring 3, the loading stage 2
is constantly biased toward the leaf spring 3 side, that is, diagonally downward to the left in FIG.

Stoppers 5 are provided at two locations on the end face of the base 1 on the side where the leaf spring 3 is provided, and the plate spring 3 side of the stage 2 is biased by the leaf spring 3 to these stoppers 5. so that the end faces of the two are in contact with each other.

The stage 2 can be stopped.

A handle 6 is protruded from the upper surface of the document table 2 on the side opposite to where the plate spring 3 is connected, and by pulling this handle 6 by hand, the document table 2 is moved against the plate spring 3 to the rail 1A. 1st along
It can be moved diagonally upward to the right in the figure.

In FIG. 1, reference numeral 11 is a contact of a measuring device (not shown) that is brought into contact with the surface of the object to be measured 10 placed on the stage 2.

In order to measure the surface of the object to be measured 10 using the measurement table of this embodiment configured as described above, the object to be measured 10 is placed on a predetermined position on the stage 2, and then a fixture (not shown) is attached. Fix it with.

Next, grasp the first handle 6 and pull it in the direction of the arrow in Figure 1.
The stage 2 is moved against the leaf spring 3Vc.

In this condition. A contact 1 of a measuring device (not shown) is placed at the center of the front end of the surface of the object to be measured 10, that is, the diagonally lower left end in FIG.
When the lower ends of the first handle 6 are brought into contact with each other and the grip of the first handle 6 is released, the stage 2 is slowly moved diagonally downward to the left by the restoring force of the leaf spring 3.

Since this movement utilizes the bending force of the leaf spring 3, it is carried out at a very slow and almost constant speed, and along with this movement, the contact 11 moves relative to the surface of the object to be measured 10 while being in contact with it. As a result, irregularities on the surface of the object to be measured 10 are measured.

The measurement is continued in this manner, and when the front end of the stage 2 comes into contact with the stopper 5, the stage 2 is stopped and the measurement is completed.

At this time, the installation position of the object to be measured 10 on the stage 2 is set in advance so that the measurement of the object 10 is completed by the time the stage 2 comes into contact with the stopper 5. .

According to this embodiment as described above, since the end portions of the base 1 and the workpiece table 2 are connected by the curved leaf spring 3, the workpiece table 2 is connected to the leaf spring 3 during measurement. By simply pulling against the force and releasing it, the stage 2 can be automatically returned to its sliding position on the base 1 by the restoring force of the leaf spring 3, and the operation is simple.

Moreover, since the structure is simple, it can be provided at low cost.

moreover. This is because the leaf spring 3 has a relatively slow recovery speed.

Since the moving speed of the stage 2 is very slow and constant, accurate measurement is possible, and the fixed length can be changed only by replacing the leaf spring 3 or inserting the pin 4 into the pin holes 3A and 3B. The moving speed and moving distance of the stage 2 can be changed as appropriate, and there is versatility depending on the shape and type of the object 10 to be measured.

Furthermore, since a power source such as a motor is not required, there is no need to worry about deterioration of accuracy due to vibrations or to take measures to prevent vibrations.

FIG. 2 shows a second embodiment of the present invention, in which another base 1' is provided on the underside of the base 1 in a direction perpendicular to the base 1, and these bases 1, 1' are The leaf spring 3' is bent at one end and connected by pins 4', 4' in the same way as in the previous embodiment, so that the base 1 can slide on another base 1'. .

Further, two rails 1'A are provided on another base 1'.

A stopper 5' is provided on the end face on the side where the leaf spring 3' is attached.

Furthermore, a handle 6' for moving the base 1 is provided on the mounting table 2.

In this second embodiment, the same functions and effects as in the first embodiment can be achieved, and further, in this embodiment, an additional effect can be added that enables two-dimensional measurement corresponding to orthogonal coordinates. .

In each of the above embodiments, the rails I A and 1'A of the base 1 and 1"l may be wheels or rollers.

A plurality of leaf springs 3, 3' may be used.

Furthermore, if an appropriate brake mechanism is provided, it is possible to interrupt the measurement.

Furthermore, the measuring device is not limited to one that measures the unevenness of the object to be measured, and may be any other device.

As explained in detail above, according to the present invention, the stage can be automatically driven with a simple configuration without the need for a large-scale power source such as a motor, and it can also be driven at very low speeds, making it possible to perform measurements easily. This has the effect of providing a measurement table that allows accurate measurements.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing a first embodiment of the present invention, and FIG. 2 is a perspective view showing a second embodiment. 1.1'...Base, 1A, 1'A...Rail, 2.
... Mounting stage, 3, 3'... Leaf spring, 10... Measured object, 11-... Contactor.

Claims (2)

[Scope of utility model registration request] (1) A base, a workpiece stand that is slidable in a predetermined direction on the base, and a curved leaf spring that connects the workpiece stand and the base; A measurement table characterized in that it is possible to measure an object to be measured on a stage without restoring the stage with restoring force. (2) Utility model registration In claim 1, the base is configured in two stages, and these bases are slidable in a direction perpendicular to the sliding direction of the object base, and , a measuring chiffle characterized by having a curved leaf spring connecting these bases.