JPH01180407A - Continuous measuring instrument for small-sized component - Google Patents

Abstract

PURPOSE:To accurately and speedily take a measurement with flexibility and to facilitate the replacement of a body to be measured by providing a fixed reference piece which abuts on one side of mutually opposite measurement surface of the body to be measured and a movable measurement piece which abuts on the other measurement surface. CONSTITUTION:The movable measurement piece 3 is positioned nearby the fixed reference piece 2, a support plate 31 is located at the support position of the body 52 to be measured (bearing fitting insertion part 53 and 54), and the body 52 to be measured is supplied onto the plate 31 in this state by a handling mechanism. Then a pressing mechanism 10 is put in operation to move the piece 3 in a spreading direction and the body 52 to be measured moves following it and is supported by balls, so that the piece 3 is inhibited from moving. This position is detected by a measuring member 20 and the pitch P to the measurement surface is calculated. Then while the air cylinder 34 of a support mechanism 30 is put in operation after the measurement to move the plate 31 to a stand-by position (shown by a chain line in a figure), the piece 3 is moved to the piece 2 and then the body 52 to be measured falls on a conveyor by the conveyor and is moved to a next stage.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a continuous measuring device that continuously and precisely measures small parts.

[Conventional technology]

When measuring the above-mentioned small component, for example, a sliding piece 52 (hereinafter referred to as the object to be measured) having an O-shaped cross section that slides along a guide bar 50 via a ball bearing 51 as shown in FIG. The pitch P between the outer sides of the portions 53 and 54 usually requires precise measurement in microns, and is therefore generally measured manually. Therefore, when measuring a large number of objects, the measurement is laborious and inefficient.

[Problem that the invention seeks to solve]

For this reason, automation of measurement is desired, but there are problems such as the configuration is complicated and expensive, lacks versatility, and requires time and effort to replace the object to be measured.

[Means for solving problems]

In view of the above, the present invention aims to be versatile, enable rapid and accurate measurement, and easily replace the object to be measured. A fixed reference piece that comes into contact with one side of the opposing measurement surface of an object, a movable measurement piece that comes into contact with the other side of the measurement surface, a pressing mechanism that presses and transfers the movable measurement piece with a predetermined pressure, and a transfer of the movable measurement piece. The measuring member is equipped with a measuring member for measuring distance and a support plate for supporting the object to be measured, and the object to be measured is moved by the movable measuring piece and latched to the fixed piece, and the position of the movable measuring piece is determined by the measuring member. At the same time, the support plate is moved to a retracted position and the object to be measured is discharged.

[For production]

The stopping position of the movable measurement piece that moves with the object to be measured is measured with the fixed reference piece as a reference, and the above-mentioned pitch P is calculated from this. Furthermore, after the measurement is completed, the support plate is moved to the retracted position and is easily ejected.

〔Example〕

1 to 6 show embodiments of the present invention.

The continuous measurement device 1 of the present embodiment is configured to measure the pitch P of the bearing insertion portions 153 and 54 (hereinafter referred to as measurement surfaces) of the aforementioned object to be measured 52.
A fixed reference piece 2 and a movable measuring piece 3 facing the other measuring surface 54 are provided. The fixed reference piece 2 is provided with two balls 4.4 that contact the measurement surface 53, and is attached to the frame F via a support bracket 5. - The movable measuring piece 3 has one ball 6 that rests on the other measuring surface 54 and is connected to a working tube 7.

Each of these balls 4.6 has the same diameter as the aforementioned ball bearing 51 or a slightly smaller diameter, and is arranged in an isosceles triangular shape with the base between the balls 4.4.

Thereby, as will be described later, when the movable measuring piece 3 is pressed outward, the pitch P described above can be accurately measured.

The slide W7 is slidably attached to a guide shaft 8.8 that is mounted horizontally with an interval between the top and bottom, and in order to reduce sliding resistance as much as possible, for example, a slide bearing 9 is used.
Attached via.

A pressing mechanism 10 is provided on one side of this slide 117, and a measuring member is provided on the opposite side. The pressing mechanism 10 is composed of a differential piston, and includes rods 12 and 13 with different diameters (however, 13>12) on both sides of the piston body 11, and an air supply hole 1 drilled in the cylinder 14.
5b) When supplying pressurized air, the piston body l
The piston body 11 is moved due to the difference in the pressure receiving area on both sides of 1, and the sliding member 11I7 is pressed. In this case, if the movable measurement piece 3 is pressed against the measurement surface 54 of the object to be measured 52 with more pressure than necessary, an error will occur in the measurement value and there will be problems with durability. It is preferable to do so, and the diameters of both rods 12 and 13 are selected appropriately.

The measuring member 20 emits the measured value as an electric signal,
For example, using a differential transformer, the measuring element 21 is pressed by a pressure spring, and the movable measuring piece 3 is urged toward the fixed reference piece 2 side.

-30 is a support structure for supporting the buttocks 52, in which a movable plate 32 with a support plate 31 attached to the tip of the object to be measured is mounted on a mounting base 33, and the support plate 31 is evacuated by an air cylinder 34. 35 is a return spring, and the support position (first position) where the object to be measured is normally supported by the contractile force of the spring 35.
It is held at the solid line position (it) in the figure.

The support plate 31 is also provided with a ball 36 for movably supporting the object 52 to be measured. The balls 36 preferably have buoyancy by feeding air under pressure through the air passages 37 to support the object 520 to be measured while reducing sliding resistance as much as possible.

Reference numeral 40 designates a discharge guide member, which is comprised of a chute 42 attached by a bracket 41, a delivery conveyor 43 attached below the chute, and a receiving plate 44 opposed to the chute 42 at an appropriate distance. The measured object is transferred to the next process by a conveyor 43.

In the above configuration, the movable measurement piece 3 is located close to the fixed reference piece 2 side, and the support plate 31 is positioned at a position where the object to be measured 52 is supported.

In this state, the object to be measured 52 is fed onto the support plate 31 by a suitable handling mechanism.

Next, the pressing mechanism 10 is activated to move the movable measurement piece 3 in the expanding direction, and the object to be measured 52 follows and moves, supported by the three balls 4, 4 and 6, and the movable measurement piece 3 moves. is prevented. This position is detected by the measurement member 20, and the pitch P between the measurement surfaces is calculated by calculation.

After the measurement is completed, the air cylinder 34 of the support mechanism 30 is operated to move the support plate 31 to the retracted position (the position indicated by the chain line in FIG. 1).

At the same time, by moving the movable measurement piece 3 to the fixed reference piece 2 side, the object to be measured 52 falls onto the conveyor 43 due to its own weight, and is transferred to the next step by the conveyor.

〔Effect of the invention〕

According to the present invention, the supplied object to be measured is placed on the support plate, and the fixed object to be measured is supported by the movement of the movable measurement piece in cooperation with the fixed reference piece, and is movable with respect to the fixed reference piece. Since the amount of movement of the measuring piece is regulated and the amount of movement is measured by the measuring member, the measurement can be performed quickly and accurately. Further, by moving the support plate to the retracted position, the object to be measured can be quickly ejected, that is, the object to be measured can be replaced.

[Brief explanation of the drawing]

1 to 5 relate to an embodiment of the present invention, in which FIG. 1 is an overall plan view partially cut away, FIG. 2 is a front view, and FIG. 3 is a cross-sectional plan view of the measuring section. , FIG. 4 is a partially cutaway front view, FIG. 5 is a sectional view taken along line I-1 in FIG. 1, FIG. 6 is a vertical sectional view of the object to be measured, and FIG. FIG. 1 is a continuous measuring device, 2 is a fixed reference piece, 3 is a movable measuring piece,
10 is a pressing mechanism, 2o is a measuring member, 31 is a support plate, 5
2 is an object to be measured, and 53 and 54 are measurement surfaces. 1 other person

Claims (1)

[Claims] A fixed reference piece that comes into contact with one side of the opposing measurement surface of the object to be measured, a movable measurement piece that comes into contact with the other side of the measurement surface, a pressing mechanism that presses and transfers the movable measurement piece with a predetermined pressure, and a movable measurement piece. The device is equipped with a measurement member for measuring the distance of movement of the object and a support plate for supporting the object to be measured, and the object to be measured is moved by the movable measurement piece and is locked to the fixed measurement piece, and the position of the movable measurement piece is measured. A continuous measurement device for small parts, characterized in that the measurement is carried out using a member, and the support plate is moved to a retracted position to discharge the object to be measured.