KR20090101002A - Apparatus for torque balance mechanism - Google Patents

Abstract

PURPOSE: A torque balancing device is provided to perform the correction by installing a measured torque cell in the torque balancing device which is axis-arranged through a supporting frame and then applying the torque to it in order to compare torque values of a reference torque cell and the measured torque cell. CONSTITUTION: A torque balancing device(100) includes a table, a measurement torque cell, a reference torque cell, a servo motor and a control unit. The table is installed so as to ascend and descend in a supporting frame. One end of the measurement torque cell is detachably installed on the table and the other end is fixed to the second coupling unit(151). One end of reference torque cell is fixed to the third coupling unit(152) which is linked with the second coupling unit.

Description

Torque Calibrator {Apparatus for torque balance mechanism}

The present invention relates to a torque calibrator for calibrating torque of a torque meter, and more particularly, to a torque meter capable of easily and quickly calibrating a torque meter.

In general, the torque calibrator is a device that calibrates the torque meter by using the torque measuring device and the load device. The actual weight torque calibrator is used by using a weight whose weight is accurately calibrated with a precision grade weight or by using a torque calibrator that is accurately calibrated. And hydraulic torque straighteners.

1 to 3 are views showing a conventional actual load torque corrector.

As shown, the conventional torque corrector 10 is constructed on the supporting frame 11 as a base.

The upper portion of the support frame 11 is installed so that the torque arm 12 is rotated like a lever, and both ends of the torque arm 12 is provided with a real load adding device 13 using a weight.

In addition, a fixed jig 16 is installed at the rear end of the support frame 11 spaced apart from the torque arm 12 at a predetermined interval, and the torque jig 20 to be measured is installed at the fixed jig 16. It is fixed.

The torque measuring device 20 is positioned on the fixing jig 16 with the fixed block 17 temporarily fixed, and then fixed to the fixing jig 16 through the bolt 18.

At this time, the shaft 21 of the torque measuring device 20 should be installed in the same line as the arm shaft 14 protruding from the rear of the torque arm 12, the arm shaft of the torque arm 12 in this state ( 14) and the shaft 21 of the torque meter 20 as an adapter 15.

In this state, the actual load adding device 13 is operated to compare and determine the load applied to the actual load adding device 13, that is, the torque value indicated by the torque measuring device 20, and correct the torque measuring device 20.

However, in this calibration operation, in order to measure the torque value of the torque measuring device 20, the operator directly installs the torque measuring device 20 on the fixing jig 16 of the torque corrector 10, It is necessary to align the shaft 21 and the arm shaft 14 of the torque arm 12 in the same line. Since the shaft alignment is performed only by the operator's manual operation, it is difficult to align the shaft precisely, and therefore, it takes a lot of time, thereby improving work efficiency. Not only is this deterioration, there is a problem that the fatigue of the operator is increased.

Accordingly, the present invention has been made in order to solve the problems of the prior art as described above, the reference torque cell (torque measuring device) is installed, the torque calibration target torque cell (torque measuring device) to the torque corrector simply and quickly axis alignment state The purpose of the present invention is to provide a torque calibrator that not only improves workability and work efficiency but also achieves precise calibration of the torque gauge.

The above object is a table mounted to the support frame to be elevated; A measurement torque cell, one end of which is detachably installed on the table, and the other end of which is gripped and fixed to the second coupling; A reference torque cell whose one end is gripped and fixed to a third coupling coupled to the second coupling; A servo motor fixed to the support frame and connected to the other end of the reference torque cell via a fourth coupling to provide torque; And a controller configured to control the servomotor, the torque controller configured to compare the torque values of the reference torque cell and the measured torque cell to correct the measured torque cell.

The servomotor is provided with a speed reducer for reducing the power of the motor, and the speed reducer is provided with a clutch that regulates power, and the clutch is provided with a drive shaft connected to the fourth coupling to interlock the clutch and the fourth coupling. .

The second coupling and the third coupling are connected to each other by a coupling shaft, and an idle bearing is installed outside the coupling shaft, and the idle bearing is installed to be liftable on a support frame.

In addition, a rail is installed on the support frame, and a trolley for rolling on the rail is installed on the table and the idle bearing, respectively.

The coupling is provided with a friction joint for holding and fixing one end of the reference torque cell and the measurement torque cell, respectively.

Therefore, the torque corrector is composed of one axis, and the reference torque cell and the measured torque cell are installed in the axis-aligned state in the middle thereof, so that the rotational force generated from the motor is uniformly acted as the same torque in all the torque correctors.

According to the torque corrector of the present invention, after installing the measurement target torque cell in the installed torque corrector in the state that the shaft is aligned through the support frame, by applying a torque by comparing the torque value of the reference torque cell and the torque cell on the measuring table by correcting This has the effect of precisely calibrating the torque meter.

Then, by moving the table of the torque corrector downward on the support frame and installing the torque cell to be measured, it is possible to quickly and easily axially align the measurement cell to the torque corrector, so that the workability and The work efficiency is improved.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

4 to 7 illustrate a torque corrector according to the present invention.

As shown in FIG. 4 to FIG. 6, the torque corrector 100 of the present invention is configured in a form perpendicular to one surface of the support frame 110.

The support frame 110 is provided with a plurality of casters on the lower surface, can be easily moved and installed.

As shown in FIG. 4, the torque corrector 100 includes a table 180, a plurality of couplings 150, 151, 152 and 153, an idle bearing 170, a clutch 140, and a reducer 130. ), The servo motor 120, the controller 190, and the like.

The table 180 is disposed in a form orthogonal to the lower portion of the support frame 110 and is installed to be elevated up and down.

A plurality of inverted " T " shaped grooves are formed on the upper surface of the table 180, and T-shaped nuts are inserted into the grooves, so that the first coupling 150 or the measurement target of the coupling to be described later The torque cell (torque meter, hereinafter referred to as "measurement torque cell") 300 is fixedly mounted.

In addition, the rail 111 is installed in the up and down direction in the support frame 110, the table 180 is installed, the cloud movement on the rail 111 on the rear portion of the table 180 opposite to the support frame 110 The cart 181 is installed.

The moving means of the table 180 in which the trolley 181 is installed as described above may be constituted by a conventional hydraulic or pneumatic cylinder, a gear means such as a rack and pinion gear, a bevel gear, or a separate stopper means. The position of 180 may be varied according to the size of the measurement torque cell 300.

The couplings 150, 151, 152, and 153 are flexible couplings, which are conventional disk couplings, and are installed in various places of the torque corrector 100 so that the torque corrector 100 can be automatically aligned. do.

Here, the disc coupling is composed of the disc between the upper body and the lower body and both the body through the bumper, the upper and lower body can be inclined toward the disk, the alignment of the axis center shifted by the restoring force of the bumper automatically Is a normal coupling.

The first coupling 150 disposed at the lowermost end of the plurality of couplings 150, 151, 152, 153 is fixed to the upper surface of the table 180 as a bolt, and a first friction is formed in the upper surface of the groove. The hollow shaft portion of the joint 160 is inserted and installed.

As shown in FIG. 7, the first friction joint 160 has a wrench groove in which a wrench bolt 160b is fastened to one side of the body 160a having a substantially “T” shape as a hollow member. Through the wrench groove, a predetermined fluid, ie, a lubricant such as grease, is filled in the thickness portion of the first friction joint 160.

Therefore, when the wrench bolt 160b of the first friction joint 160 is tightened, the grease in the friction joint 160 is compressed and expanded, and the expansion pressure is applied to the inner and outer surfaces of the friction joint 160 due to the expansion of the grease. This action allows the shaft of the torque cells 200 and 300 to be described later to be firmly gripped and fixed.

On the other hand, the configuration of the first coupling 150 and the first friction joint 160 as described above is the same as the remaining coupling 151, 152, 153 and friction joints (161, 162, 163). In the following description, the remaining couplings and friction joints, that is, the second, third and fourth couplings 151, 152 and 153 and the second, third and fourth friction joints 161, 162 and 163 will be described in detail. It will be omitted.

The lower shaft 302 of the measurement torque cell 300 is gripped and fixed to the first friction joint 160 by the above-described operation of the friction joint 160, and the upper shaft 301 is a second couple located at an upper side thereof. The second friction joint 161 formed on the lower surface of the ring 151 is gripped and fixed.

Here, the shafts 301 and 302 of the torque cell 300 may be adapters separately installed in the torque cell 300 for calibration, hereinafter referred to as "axis of the torque cell".

In addition, the first coupling 150 may be installed or removed on the table 180 according to the size or shape of the measurement torque cell 300 to be measured, and the first coupling 150 is removed. Is installed by fastening the measurement torque cell 300 directly to the upper surface of the table 180 as a bolt.

In addition, a third coupling 152 is installed on the upper portion of the second coupling 151 via the idle bearing 170, and a third friction joint 162 is disposed on the upper portion of the third coupling 152. ) Is installed.

The idle bearing 170 is formed with a bearing inside the hollow housing forming the exterior, and a rail of the support frame 110 is provided on a rear portion of the idle bearing 170 opposite to the support frame 110. The trolley | bogie 171 which moves clouds on the 111 is provided.

The moving means of the idle bearing 170 in which the trolley 171 is installed may also be configured as a gear means such as a conventional hydraulic or pneumatic cylinder, a rack and pinion, a bevel gear, or the like as the table 180 described above.

The movement of the idle bearing 170 installed as described above is made only when replacing the reference torque cell 200 to be described later.

On the other hand, the second coupling 151 and the third coupling 152 respectively installed on the upper and lower sides of the idle bearing 170 are connected to be linked to the connecting shaft 172, the connecting shaft 172 is the idle bearing In the interior of 170 the children are idle.

The lower shaft 202 of the reference torque cell 200 is gripped and fixed to the third friction joint 162 of the third coupling 152, and the upper shaft 201 is the fourth coupling 153 located on the upper side. ) Is gripped and fixed by the fourth friction joint 163 formed on the lower surface of

In addition, a clutch 140 is formed on the upper portion of the fourth coupling 153 through the bearing 142.

The clutch 140 has a drive shaft 141 connected to the fourth coupling 153 to interlock with a lower portion of the clutch 140, and the drive shaft 141 is guided by a bearing 142.

On the other hand, the clutch 140 configured as described above is to interrupt the power of the servo motor 120 to be described later, when connected to the reference torque cell 200 and the measurement torque cell 300 by the operation of the motor 120. The same torque is applied, and when shut off, the torque is released and restored to its original state.

A servo motor 120 fixed to an upper end of the support frame 110 is installed at the upper portion of the clutch 140, and a reducer 130 for reducing the power of the motor 120 is disposed at the lower portion of the servo motor 120. Is installed, the reducer 130 is installed in conjunction with the clutch 140.

The motor 120 is arranged in one axis from the installed torque corrector 100, that is, the servo motor 120, to the first coupling 150 or the measured torque cell 300 fixed to the table 180. The rotational force of) is measured by acting uniformly as the same torque (twist) on the entire torque corrector 100.

The servo motor 120 and the clutch 140 are controlled by the controller 190, and the controller 190 is a torque value, that is, a reference signal, of the reference torque cell 200 and the measured torque cell 300. And compare and determine the measured signal and display or output data of the measured torque cell 300.

Therefore, the measurement torque cell 300 is calibrated through the calibration data provided as described above.

Hereinafter, the operation of the torque corrector 100 configured as described above will be described.

First, in the torque corrector 100 of the present invention, the reference torque cell 200 is previously mounted between the third coupling 152 and the fourth coupling 153.

In order to mount the measurement torque cell 300 in this state, the table 180 is lowered and then measured on the first friction joint 160 of the first coupling 150 installed on the upper surface of the table 180. The lower shaft 302 of the torque cell 300 is inserted and fixed.

Thereafter, the table 180 on which the measuring torque cell 300 is fixed is raised to its original state, thereby fixing the table 180 while the upper shaft 301 of the measuring torque cell 300 is coupled to the second coupling 151. The second friction joint 161).

In this state, the control unit 190 may provide various torques to the torque corrector 100 through the servomotor 120.

For example, starting from a small torque, a large torque can be provided sequentially, on the contrary, a small torque can be provided sequentially from a large torque, and both methods can be measured in parallel.

On the other hand, when the servo motor 120 is operated by the control unit 190 as described above, the clutch 140 and the plurality of couplings 150, 151 (its power is reduced through the reducer 130) ( 152, 153 and friction joints 160, 161, 162, 163 are transmitted to the reference torque cell 200 and the measurement torque cell 300 to torque values to each torque cell 200, 300 Will be measured and displayed.

The torque value measured as described above is transmitted to the controller 190 as data, and the controller 190 compares the measured reference data of the input reference torque cell 200 with the measured data of the measured torque cell 300 to determine the measured value. The calibration data of the torque cell 300 is displayed or output so that the calibration of the measured torque cell 300 is performed.

At this time, the torque value measured as described above should be the same as the reference torque cell 200 and the measured torque cell 300. That is, even though the torsion angles are different from the reference torque cell 200 and the measurement torque cell 300 installed in the same linear axis alignment with the torque corrector 100, the torque is equally applied, so that the measured torque is measured in both torque cells 200 and 300. Torque values should be the same.

However, when the torque value measured by the measurement torque cell 300 is different from the torque value indicated by the reference torque cell 200, the measurement torque cell 300 is calibrated by the difference value through the above-described calibration data.

On the other hand, when the torque corrector 100 operated as described above is disconnected clutch 140, the power of the servomotor 120 is cut off to release the torque applied to the torque corrector 100, the reference torque cell 200 Since the torque is not in the measured torque cell 300, the zero point of both torque cells 200 and 300 can be set.

1 is a front view showing a conventional torque corrector.

2 is a side configuration diagram of FIG. 1.

3 is a view showing an installation state of a torque meter installed in a conventional torque corrector.

Figure 4 is a block diagram showing a torque corrector according to the present invention.

5 is a front configuration diagram of a torque corrector according to the present invention.

6 is a side configuration diagram of FIG. 5.

Figure 7 is a block diagram showing a friction joint of the torque corrector according to the present invention.

<Description of the symbols for the main parts of the drawings>

10: torque corrector 11: support frame

12: torque arm 13: actual load additional device

14: Retraction 15: Adapter

16: fixed jig 17: fixed block

18: Bolt 20: Torque Meter

21: axis

100: torque corrector 110: support frame

111: rail 120: servo motor

130: reducer 140: clutch

141: drive shaft 142: bearing

150,151,152,153: Coupling 160,161,162,163: Friction Joint

160a: Body 160b: Wrench Bolt

170: children bearing 171: balance

172: connecting axis 180: table

181: balance 190: control unit

200: reference torque cell 201,202: axis

300: measurement torque cell 301,302: axis

Claims (5)

A table mounted to the support frame to be elevated; A measurement torque cell, one end of which is detachably installed on the table, and the other end of which is gripped and fixed to the second coupling; A reference torque cell whose one end is gripped and fixed to a third coupling coupled to the second coupling; A servo motor fixed to the support frame and connected to the other end of the reference torque cell via a fourth coupling to provide torque; Including; a control unit for controlling the servo motor, including, And a torque corrector configured to compare the torque values of the reference torque cell and the measured torque cell to calibrate the measured torque cell. The method of claim 1, The servo motor is provided with a reducer for reducing the power of the motor, The reducer is provided with a clutch to control the power, And a drive shaft connected to the fourth coupling to drive the clutch and the fourth coupling to the clutch. The method of claim 1, And the second coupling and the third coupling are connected to each other by a connecting shaft. An idle bearing is installed outside the connecting shaft, and the idle bearing is installed on the support frame to be liftable. The method of claim 3, wherein A rail is provided on the support frame, and the table and the idle bearing, the torque corrector, characterized in that the trolley for rolling on the rail is installed, respectively. The method of claim 1, And a friction joint configured to grip and fix one end of each of the reference torque cell and the measured torque cell, respectively.

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