JPH0441311Y2 - - Google Patents

Description

[Detailed description of the invention] a. Industrial application field The present invention relates to a shaft pinion meshing detection device with a center hole on one side, and in particular, a shaft pinion meshing detection device with a single center hole, which has extremely low rotational resistance of the receiving part that holds the shaft part, and which meshes with high precision. Concerning new improvements for detecting errors.

b. Prior Art Various configurations have been adopted and proposed for this type of shaft pinion engagement detection device with a single center hole that has been used in the past, but here we will describe a typical configuration. Although the document name and the like indicating the structure are not listed, the structure shown in FIG. 4 and manufactured in-house by the present applicant can be disclosed.

That is, in FIG. 4, what is indicated by the reference numeral 1 is a base having a longitudinal shape, and this base 1
A pair of holding stands 3 are provided at both ends of the base 1, respectively, for holding the receiving parts 2 in adjustable positions along the longitudinal direction of the base 1.

Therefore, each of the receiving parts 2 is provided so that its position can be adjusted in the direction of the arrow, and has a ring-shaped holder structure that can be opened freely.
A shaft portion 4a of a shaft pinion 4 with one center hole is rotatably held.

A pulley 5 is integrally provided on the shaft portion 4a, and a belt 6 is attached to the outer periphery of the pulley 5.
is suspended, and the shaft portion 4a is rotated via the belt 6 and pulley 5.

Further, a pinion portion 4b is integrally formed at one end of the shaft pinion 4 with a single center hole, and a master gear 7 is meshed with this pinion portion 4b.

This master gear 7 is connected to a rotating shaft 9 in a detection device 8.
The master gear 7 rotates when the pinion part 4b is driven, and the pinion part 4
It is possible to detect the eccentricity of b and the meshing error.

c. Problems to be Solved by the Invention The conventional shaft pinion mesh detection device with a single center hole performed detection as described above, and therefore had the following problems.

That is, the receiving structure in each receiving part 2 is the shaft part 4a.
Since the structure was not designed to obtain sufficient rotational friction against the pinion, there was a lot of resistance, making it difficult to obtain accurate meshing data and making it impossible to accurately measure the finishing accuracy of the pinion part.

Therefore, by using a shaft pinion with a single center hole that does not rely on high-precision measurement, it has been extremely difficult to obtain a sufficient level of accuracy for various electronic devices constructed using this shaft pinion.

The present invention was developed to solve the above-mentioned problems, and in particular, it is designed to have extremely low rotational resistance on the receiving part that holds the shaft part, and to be able to detect meshing errors with high precision. The object of the present invention is to provide a shaft pinion engagement detection device with a single center hole.

d Means for Solving the Problem The shaft pinion meshing detection device with a single center hole according to the present invention rotates the shaft pinion with a single center hole rotatably held by a pair of receivers via a pulley and a belt. and in which the meshing state of the pinion portion of the shaft pinion with one center hole is detected by a master gear, each of the receiving portions being a V-groove receiving portion, and each of the receiving portions being provided in each of the V-groove receiving portions. A spring-biased plunger provided in each of the receiving portions is connected to the outer circumferential surface of the shaft portion of the shaft pinion with a center hole.

e Effect: In the shaft pinion meshing detection device with one center hole according to the present invention, the shaft portion of the shaft pinion with one center hole is held by each receiving portion having a V-groove shape and the end face of the plunger. , the contact resistance to the shaft portion is extremely low, and extremely accurate meshing data can be obtained.

Therefore, a meshing error of the pinion portion can be accurately detected based on accurate meshing data obtained by meshing the master gear with the pinion portion.

f. Embodiment Hereinafter, a preferred embodiment of the shaft pinion engagement detection device with a single center hole according to the present invention will be described in detail with reference to the drawings.

Note that the same or equivalent parts as in the conventional example will be described using the same reference numerals.

The configurations shown in FIGS. 1 to 3 are for illustrating the shaft pinion engagement detection device with one center hole according to the present invention, and the reference numeral 1 in the figures is a base having a longitudinal shape. A pair of holding stands 3 are provided at both ends of the base 1, respectively, for holding the receiving portions 2 in adjustable positions along the longitudinal direction of the base 1.

In each of the receiving parts 2, a receiving part connecting body 2a connected to each of the receiving parts 2 is slidably held in each of the holding bases 3, and this receiving part connecting body 2a is connected to each of the holding parts 2. It can be fixed at any position using positioning bolts 3a provided on the stand 3.

Therefore, each of the receiving parts 2 is configured to be able to freely reciprocate in the direction shown by the arrow.

As shown in FIG. 2, each of the receiving parts 2 includes a receiving part body 2b provided substantially vertically on the receiving part connecting body 2a, and a V formed on the upper surface of this receiving part body 2b. A letter-shaped V-groove receiving portion 2c and the receiving portion body 2b
The plunger holder 2d is integrally attached to the side of the plunger holder 2d.
and a plunger 2e urged by a spring member (not shown) on the plunger holder 2d.

A shaft pinion 4 with a single center hole is provided in the V-groove receiving portion 2c of each of the receiving portions 2, and a shaft portion 4a of the shaft pinion 4 with a single center hole is provided with:
The pulley 5 on which the belt 6 is suspended is the fixing bolt 5a
The shaft pinion 4 with one center hole is rotated by the drive of the belt 6 through the pulley 5.

The end face of the plunger 2e is joined with pressure to the outer peripheral surface of the shaft portion 4a of the shaft pinion 4 with a single center hole, and the shaft portion 4a is held in a pressed state within the V-groove receiving portion 2c. A pinion portion 4b is formed at the end of the shaft pinion 4 with a single center hole.

A tooth portion 7a of a master gear 7 is engaged with the pinion portion 4b, which is rotatably held by a holding mechanism (not shown) and whose meshing error can be detected by a detection mechanism (not shown).

As shown in FIG. 3, the master gear 7 is configured such that lubricating oil is supplied to its inner diameter portion 7b through an oil passage 7c, so that the master gear 7 rotates smoothly. It is composed of

The shaft pinion engagement detection device with one center hole according to the present invention is constructed as described above, and its operation will be explained below.

First, in the state shown in FIG. 1, when the shaft pinion 4 with one center hole is rotated via the pulley 5 and the belt 6, the master gear 7 meshing with the pinion portion 4b rotates, and the rotation state of the master gear 7 is By detecting this using the detection mechanism, it is possible to detect a meshing error of the pinion portion 4b.

Further, since the shaft portion 4a of the shaft pinion 4 with one center hole is rotatably held by the V-groove receiving portion 2c and the plunger 2e, the shaft portion 4a
is in a three-point supported state and can be held in a state with extremely low rotational resistance, making it possible to accurately detect meshing of the pinion portion 4b having an extremely small number of teeth (Z=13 or Z=19).

g. Effects of the invention Since the shaft pinion engagement detection device with one center hole according to the invention is configured as described above, the following effects can be obtained.

Each receiving part for rotatably holding the shaft pinion with a single center hole is constructed with a point contact structure using a V-groove receiving part and a plunger.
The rotational resistance of the shaft pinion with one center hole is minimized, and it can rotate extremely smoothly, making it possible to detect meshing errors in the pinion portion with a small number of teeth with high accuracy.

[Brief explanation of the drawing]

1 to 3 are for showing the shaft pinion engagement detection device with a single center hole according to the present invention. FIG. 1 is a front view showing the overall configuration, and FIG. 2 shows the main parts of FIG. FIG. 3 is an enlarged sectional view showing the master gear shown in FIG. 1, and FIG. 4 is a front view of main parts showing a conventional configuration. 1 is a base, 2 is a receiving part, 2c is a V-groove receiving part, 2d is a plunger holder, 2e is a plunger, 4 is a shaft pinion with one center hole, 4a is a shaft part, 4b
is a pinion part, 5 is a pulley, 6 is a belt, and 7 is a master gear.

Claims (1)

[Claims for Utility Model Registration] (1) A shaft pinion 4 with a single center hole rotatably held by a pair of receiving parts 2 is connected to a pulley 5.
and a shaft pinion meshing detection device with a single center hole, which is rotated via a belt 6 and detects the meshing state of the pinion portion 4b of the shaft pinion 4 with a single center hole using a master gear 7. Part 2 is V groove receiving part 2
The shaft portion 4a of the shaft pinion 4 with one center hole provided in each V-groove receiving portion 2c.
A shaft pinion engagement detection device with a single center hole, characterized in that a spring-biased plunger 2e provided in each of the receiving portions 2 is connected to the outer circumferential surface of the shaft pinion engagement detection device. (2) The utility model registration claim is characterized in that the plunger 2e is movably provided on the plunger holder 2d of each of the receiving parts 2, and the plunger 2e is located above the shaft part 4a. A shaft pinion engagement detection device with a single center hole according to scope 1.