JPH08219978A - Fixing jig for measurement of friction coefficient of rubber roller with shaft - Google Patents

Abstract

PURPOSE: To provide a fixing jig for a rubber roller whereby the friction coefficient of a rubber roller with a shaft can be accurately measured directly as it is. CONSTITUTION: The jig has a sheath part 7 to which a shaft 11 of a rubber roller 9 can be directly inserted, and a fastening screw 8 inserted/fastened in a side wall of the sheath part 7. In this constitution, it becomes enough to insert the shaft 11 of the rubber roller 9 directly into the sheath part 7 and screw the fastening screw 8 thereby to fix the shaft 11. The size of the sheath part 7 is selected to fit the shaft 11 of the rubber roller 9, whereby the friction coefficient of the rubber roller 9 can be measured with better accuracy.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the field of measuring the friction coefficient of a rubber roller, and more particularly, it is possible to hold a rubber roller with a shaft in parallel with a test piece holder of a measuring device and measure the friction coefficient. To provide a fixing jig for doing.

[0002]

2. Description of the Related Art Conventionally, the friction coefficient of a rubber roller has been measured as shown in FIG. That is, the test piece holding member 1 is used. The test piece holding member 1 has a main body connecting screw 2 on a main body portion, and further has a holding shaft 3. Then, the rubber roller 4 is inserted into the holding shaft 3 and the friction coefficient of the rubber roller 4 is measured.

[0003]

According to the test piece holding member 1 of FIG. 2 used as described above, when it is desired to measure a rubber roller with a shaft, the rubber roller is removed from the shaft and the size of the holding shaft 3 (usually φ6, φ8, φ10
After selecting "Yes", a rubber roller without a shaft was inserted into the holding shaft 3 of the test piece holding member 1 to be used for the measurement of the friction coefficient.

Therefore, in the conventional friction coefficient measurement,
Since the shaft of the rubber roller with shaft was removed one by one, the measurement in the assembled state could not be performed, and the true measured value could not be obtained. Further, since the rubber roller is removed from the shaft and the rubber roller is inserted into a dedicated jig with a shaft, workability is poor and there is a problem in efficiency. Furthermore, after inserting the rubber roller into the dedicated jig, it was necessary to obtain parallelism between the rubber roller surface and the main body (drum), but it took time to set up because the parallelism confirmation was finely adjusted visually.

Therefore, an object of the present invention is to solve the above-mentioned problems of the prior art and to provide a rubber roller with a shaft as it is for accurate friction coefficient measurement, and a friction coefficient for a rubber roller with a shaft. It is to provide a fixture for measurement.

[0006]

A fixing jig for measuring a friction coefficient of a rubber roller with a shaft provided by the present invention is provided with a sheath-like portion which can directly receive the shaft of the rubber roller with a shaft and a side wall of the sheath-like portion. And a set screw.

[0007]

According to the fixing jig for measuring the friction coefficient of the rubber roller with the shaft of the present invention, it suffices to insert the shaft attached to the rubber roller directly into the sheath and screw the set screw to fix the shaft. If the size of the sheath portion is selected so as to fit the shaft of the rubber roller, the accuracy can be improved and the friction coefficient of the rubber roller can be measured.

[0008]

FIG. 1 shows a preferred embodiment of a fixing jig for measuring a friction coefficient of a rubber roller with a shaft according to the present invention. In the figure, 5 is a fixing jig main body, 6 is a main body mounting screw, 7 is a sheath portion, and 8 is a set screw.

The inner diameter of the sheath 7 is selected according to the shaft 11 of the rubber roller 9 with a shaft. Normal φ
Prepare 6, φ8 and φ10 and select from them. The set screw 8 is screwed into the side wall of the sheath 7 at a right angle so that the tip projects into the sheath.

According to the fixing jig as described above, if the shaft 11 of the rubber roller 9 with a shaft is directly inserted into the sheath 7 and the set screw 8 is screwed in, the jig of the shaft 11 is fixed. It is possible to achieve the tightening fixation to.
Then, if the screw 6 for mounting the main body of the fixing jig main body is used to set it on the measuring instrument main body, horizontal holding of the rubber roller 9 with the shaft is achieved, and the rubber roller 9 with the shaft is achieved.
The coefficient of friction of can be measured. In addition, 1
Reference numeral 0 is a rubber roller.

[0011]

According to the fixing jig for measuring the friction coefficient of the rubber roller with the shaft of the present invention as described above, the shaft of the rubber roller with the shaft can be directly inserted into the sheath-shaped portion and the side wall of the sheath-shaped portion can be screwed. Since it is a fixing jig having a fixing screw, the rubber roller with shaft can be measured with the shaft still attached (assembled state), and accuracy can be improved. Shaft of rubber roller with shaft (φ6,
By creating a fixing jig having a sheath-shaped portion corresponding to φ8, φ10), it is possible to save the labor of removing the rubber roller from the shaft and improve workability. Since the rubber roller surface and the drum (main body) do not need to be paralleled, the measurement time can be shortened. It is possible to achieve the effect.

[Brief description of drawings]

FIG. 1 is an explanatory view of an embodiment of a fixing jig for measuring a friction coefficient of a rubber roller with a shaft according to the present invention.

FIG. 2 is an explanatory view of a conventional test piece holding member for measuring a friction coefficient of a rubber roller.

[Explanation of symbols]

 5 Fixing jig body part 6 Body mounting screw 7 Sheath part 8 Set screw 9 Rubber roller with shaft 10 Rubber roller 11 Shaft

Claims (1)

[Claims] 1. A fixing jig for measuring a friction coefficient of a rubber roller with a shaft, comprising a sheath-shaped portion capable of directly receiving the shaft of the rubber roller with the shaft and a set screw screwed into a side wall of the sheath-shaped portion.