RU57899U1 - INSTALLATION FOR GRADING AND CONTROL OF KEYS OF MOMENTS - Google Patents

Abstract

Installation for calibration and control of torque keys. The utility model relates to load-measuring technique and can be used for graduation and control of torque wrenches and screwdrivers of various designs, both indicating and maximum torque clockwise or counterclockwise. The purpose of the utility model is to simplify the operation of calibration and control of torque keys, expand the measurement range and increase operator productivity. The head of the tested torque wrench 7 is inserted into the interchangeable adapter 4, and its handle is engaged with the pulling device 8. The load 11 is fastened with a loop 10 on the tape b so that the force transmitted to the handle corresponds to the force applied to the key during operation. Tape 6 is fixed by the tape retainer 1 on disk 2. Weight P of cargo 11 is determined by the formula: P = M _cr / R, where M _cr is the checked moment in kgf. see (determined according to the table in the passport for the key); R is the radius of the disk 2 in cm. Using a pulling device 8, a force F is applied to the torque wrench 7 until the load 11 rises above the horizontal surface 9, and the torque wrench 7 is loaded to the point being checked on the scale or the moment of operation. 1 ill.

Description

Installation for calibration and control of torque keys.

The utility model relates to load-measuring equipment and can be used for graduation and control of torque wrenches and screwdrivers of various designs, both indicating and maximum torque clockwise or counterclockwise.

The closest in technical essence and the achieved result to a utility model is a device for checking torque wrenches [1], comprising a housing, a torque meter, adapter sleeve, bearings, an additional sleeve equipped with a removable handle, an angular position lock, a rotary platform with a groove, equipped movable emphasis and loading unit.

In the initial position, the device is mounted on a horizontal surface. The head of the tested key is inserted into the hole of the adapter sleeve, and its handle is engaged with the movable stop, and set relative to the key so that the force transmitted to the handle corresponds to the force on the key during operation. With the help of the loading unit, the verified key is loaded to the verified point of the key scale and to its moment or to its moment of operation. The indicators of the torque meter and the verified key are compared and the error of the verified means is calculated.

The disadvantage of this device is the low productivity of the operator due to the complexity of the readjustment of the device when changing the direction of rotation of the working body of the tested mechanism, a small range of available measurements.

The purpose of the utility model is to simplify the operation of calibration and control of torque keys, expand the measurement range and increase operator productivity.

This goal is achieved due to the fact that they used a rack mounted on a horizontal plate, a shaft is installed on the rack with the possibility

rotation on ball bearings hourly and counterclockwise. A disk with a guide groove and a tape fixer is fixed on the shaft, a tape with loops at the ends is laid along the groove through the fixer, a replaceable adapter is installed in the protruding end of the shaft, a pulling device is installed on the horizontal plate.

The design of the proposed installation for calibration and control of torque wrenches.

The proposed installation for calibration and control of torque wrenches contains a horizontal plate 9 with a stand 5 fixed on it and a pulling device 8. A shaft 3, a disk 2 with a belt clip 1, a tape 6 with cargo loops 10, a removable adapter 4 are mounted on the rack 5.

Installation for calibration and control of torque keys works as follows.

In the initial position, the rack 5 is installed on a horizontal surface 9, the tape 6 is threaded along the guide groove through the disk 2 and fixed by the tape retainer 1, the load 11 is fixed at one end of the tape by the loop 11. The tested torque wrench 7 is inserted into the interchangeable adapter 4 installed in the shaft 3 , and the handle of the torque wrench 7 is attached to the pulling device 8.

The load 11 is attached by a loop 10 on the tape 6 so that the force transmitted to the handle corresponds to the force exerted on the torque wrench 7. The tape 6 is fixed by the latch of the tape 1 on the disk 2. The weight P of the load 11 is determined by the formula: P = M _cr / R, where

M _cr - the checked moment in kgf. cm.;

R is the radius of the disk 2 in cm.

After setting the installation to the required value of M _cr according to the table in the passport for the key, the torque wrench 7 is installed in the adapter 4. A force F is applied to the handle of the torque wrench 7 attached to the pulling device 8 until the load 11 rises above a horizontal surface 9 or until the moment the key is triggered

7. Verification completed. At the end of the verification (calibration) of the torque wrench 7, return the key to its original position (remove the force F), release the handle of the key from the pulling device 8, remove the torque wrench 7 from the adapter 4 and remove the load 11 from the belt 6.

This installation is easy to manufacture and operate, reliable in operation and can be used for calibration and control of torque wrenches.

Information sources:

[1] Copyright certificate of the USSR SU 1545111 A1 cl. G 01 L 5/24, Bull. No 7 on 02/23/90.

Claims (1)

Installation for calibration and control of torque wrenches, containing an adapter for the key being tested and a loading unit, characterized in that it has a stand on which a shaft is mounted with the possibility of rotation on ball bearings clockwise and counterclockwise, a disk with a guide groove equipped with a lock is mounted on the shaft tape, along the guide groove is a tape with loops at the ends for securing the load.