JPH04372837A - Gear testing machine - Google Patents

Abstract

PURPOSE:To obtain a simple gear testing machine, which can be started without a load, and wherein the load can be changed during the continuous operation by human power, the number of the gears is least with respect to a power circulating type gear testing machine, and the power is less. CONSTITUTION:Mutually intermeshing drive gears 3 and 3' are provided at the side of the base ends of a pair of drive shafts 2 and 2', respectively. Mutually intermeshing test gears 4 and 4' are provided at the side of the front ends, respectively. The mutually intermeshing drive gears 3 and 3' are contained in a gear case 5 which is supported with one drive shaft 2. A change adjusting device 6 which can slightly turn the gear case 5 with one drive shaft 2 as the center is provided. Twisting torque is imparted to the drive shafts 2 and 2' by changing the phase angle between the drive gears 3 and 3' by the change in turning angles. Loads are applied on the test gears 4 and 4'. Equal-speed universal joints 7 and 7 and an expanding and contracting shaft 8 between the joints are provided at least at the other drive shaft 2' so as to correspond to the sizes of the test gears 4 and 4'.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power circulation gear testing machine.

0002

[Prior Art] A conventional power circulation gear testing machine has been developed in which a predetermined load torque is applied to a torsion bar with the electric motor stopped, and then the load weight is removed and the electric motor is rotated for testing. As a result, it was only necessary to change the test gear housing, and it became possible to perform actual tests on small gears (see Japanese Utility Model Application No. 64-2139). However, in such a gear testing machine, the test is performed with torque applied to the torsion bar in advance, and a load is applied to the test gear pair from the time the testing machine starts, so it is difficult to start from a state of zero load. I can't.

[0003] Furthermore, the load cannot be changed during continuous operation, and if the load is to be changed, the operation must be interrupted. Moreover, there are problems in that the number of transmission gears other than the test gear pair is large, the structure is complicated and expensive, and it is difficult to easily absorb changes in force due to pitch errors.

0004

[Problems to be Solved by the Invention] The present invention is capable of starting without load, and can change the load automatically or manually while measuring torque with a torque detector during continuous operation, and has a number of driving gears. The purpose is to simplify the mechanism, improve efficiency, reduce power consumption, and adapt it to the size of the test gear.

Another object of the present invention is to provide a gear testing machine that can easily absorb changes in load due to pitch errors.

[0006]

[Means for Solving the Problems] In order to achieve the above object, the present invention provides a power circulation gear testing machine provided on a machine base, in which drive gears provided at the base ends of a pair of drive shafts are mutually connected. mesh, provide a test gear on each tip side, and perform 1 above.
A gear housing housing the meshing drive gear is supported on the pair of drive shafts, and the gear housing is rotatably supported around one of the drive shafts, and a device for changing the rotation angle is attached to the machine base. established,
A gear testing machine changing and adjusting device, which includes a constant velocity universal joint interposed on at least the other drive shaft and meshing the test gears with each other, supports the gear housing on the machine base side by an adjustment bolt via a link. A hydraulic cylinder instead of the gear testing machine cushioning material according to the second invention, wherein the bolt is supported with a cushioning material interposed on the machine base side, and the cushioning material of the gear testing machine according to the above invention is a rubber material. The gear testing machine is constructed by the gear testing machine according to the second aspect of the invention.

[0007]

[Operation] In the present invention, when the drive motor 12' connected to the base end of one drive shaft 2 is operated to rotate the drive shaft 2,
The meshing drive gears 3, 3' rotate in opposite directions. Then, the other drive shaft 2' is rotated, and the engagement test gear 4 on the tip side is rotated.
, 4' can be rotated in opposite directions.

The mutual meshing of the test gears 4, 4' is achieved by bending the constant velocity universal joints 7, 7 interposed on the other drive shaft 2' and sliding the telescopic shaft 8 between the joints when the electric motor 12' is stopped. This can be done by dynamically adjusting the test gears 4, 4' provided at the tips and moving them in a direction perpendicular to the rotation center lines c, c', and the meshing state can be maintained.

When the electric motor 12' is in operation, the gear housing 5 is rotated about one of the drive shafts 2 by operating the change adjustment device 6, and the rotation angle is changed and adjusted to adjust the meshing drive gears 3, 3'. By changing the phase angle of the drive shafts 2, 2'
A load can be applied to the test gears 4, 4' by applying a torsional torque to the test gears 4, 4'.

The change adjustment device 6 can rotate the gear housing 5 about one of the drive shafts 2 by manually adjusting the adjustment bolt 10 by sliding it in the direction of the center line of the bolt 10. Drive gear 3 by holding position
' can be rotated to apply a predetermined load to the meshing test gears 4, 4'.

[0011] The above-mentioned holding is carried out by the above-mentioned bolt 10 and machine base 1.
Since this is done through the rubber cushioning material 11 interposed on the side, changes in load due to pitch errors of the drive gears 3, 3' and the test gears 4, 4' can be absorbed. The change in load can be absorbed by a hydraulic cylinder instead of the cushioning material 11 made of the rubber material.

0012

[Example] The proximal side and distal side machine frames 12 and 13 are placed on the machine stand 1.
One drive shaft 2 is supported by bearings 15, 15 on a rectangular annular frame 14 provided on the proximal machine frame 12, and a support stand 16 is provided on the distal end side of the drive shaft 2 on the distal machine frame 13. It is supported by a bearing 17 on top, a test gear 4 is provided at the tip, a torque detector 18 is interposed in the middle of the drive shaft 2, and an output shaft 19 of a drive motor 12' is connected to the base end.

A groove-shaped gear housing 5 is accommodated in the rectangular annular frame 14, one drive shaft 2 passes through the gear housing 5, and bearings 20, 20 are interposed in the penetrating portion. The drive shaft 2 is supported rotatably around a drive shaft 2. The other drive shaft 2' is supported by bearings 21, 21 on the gear housing 5, and drive gears 3, 3' each having a single helical gear are fitted to both drive shafts 2, 2' via a key 22. and the gears 3 and 3' are meshed with each other.

The other drive shaft 2' has its tip end connected to the support base 1.
6 and supported by a bearing 17', and a test gear 4' at the tip.
will be established. This tip side bearing 17' can be moved on the support stand 16 in a direction perpendicular to the center line c', and can be meshed with the test gear 4 of one drive shaft 2 depending on the size of the gear. can.

Therefore, the middle of the other drive shaft 2' has two constant velocity universal joints 7, 7 formed by ball joints and the joint 7.
, 7 is interposed with a telescopic shaft 8 formed by a spline.

An adjustment bolt 10 is connected to the upper edge of the gear housing 5 on the other drive shaft 2' side via a link 9, and the bolt 10 is mounted on a cradle 23 provided on the machine frame 12 on the base end side. The nuts 26 and 26 are inserted into the drilled through hole 24 and screwed onto the bolt 10 via the rubber cushion material 11 and the washer 25 arranged on the pedestal 23, and the positions of the nuts 26 and 26 are adjusted as described above. By adjusting the bolt 10 in the vertical direction, the gear housing 5 can be slightly rotated in the vertical direction about one of the drive shafts 2 and the rotation angle can be maintained. The phase angle of the motor can be changed during operation. It is possible to use a hydraulic cylinder in place of the rubber cushion material 11.

27 in the figure is a spring interposed between the pedestal 23 and the adjustment bolt 10, and 28 is the base end side machine frame 1.
2 is a coupling between the output shaft 19 of the drive motor 12' and one drive shaft 2, 30 is a coupling on both sides of the torque detector 18, and 31 is a tip bearing 17.
, 17' on the support stand 16.

[0018]

[Effects of the Invention] Since the present invention is constructed as described above, the power circulation type gear testing machine can be started with no load, and the load can be changed manually during continuous operation. and drive gears 3 other than test gears 4 and 4',
3' can be formed to a minimum, the mechanism can be simplified, operational efficiency can be improved, and power can be reduced, and it can also be applied to large and small test gears 4, 4'.

Furthermore, by utilizing the elasticity of rubber or the hydraulic cylinder to apply the load to the teeth, it is possible to absorb changes in force due to gear pitch errors.

[Brief explanation of drawings]

FIG. 1 is a plan view showing a gear testing machine of the present invention.

FIG. 2 is a front view taken along line A-A in FIG.

[Explanation of symbols] 1 Machine stand 2, 2’ drive shaft 3, 3' drive gear 4, 4’ test gear 5 Gear box 6 Change adjustment device 7 Constant velocity universal joint 8　　　Extension shaft between joints 9 Link 10 Adjustment bolt 11 Cushion material

Claims (4)

[Claims] Claim 1: In a power circulation gear testing machine installed on a machine base, driving gears provided at the base ends of a pair of drive shafts are meshed with each other, and test gears are each provided at the distal ends,
A gear housing housing the meshing drive gear is supported on the pair of drive shafts, and the gear housing is rotatably supported around one of the drive shafts, and a device for changing the rotation angle thereof is mounted on the machine. A gear testing machine in which the test gears are provided on one side of the drive shaft, and a constant velocity universal joint is interposed on at least the other drive shaft to mesh the test gears with each other. 2. A modification adjustment device in which the gear housing is supported on the machine base side by an adjustment bolt via a link, and the bolt is supported on the machine base side with a cushioning material interposed therebetween. (1) Gear testing machine described. [Claim 3] Claim (Claim 3) wherein the cushioning material is a rubber material (
2) Gear testing machine described. 4. The gear testing machine according to claim 2, wherein a hydraulic cylinder is used in place of the cushioning material.