CN112414707A - Device for fatigue test of harmonic reducer - Google Patents
Device for fatigue test of harmonic reducer Download PDFInfo
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- CN112414707A CN112414707A CN202011576088.3A CN202011576088A CN112414707A CN 112414707 A CN112414707 A CN 112414707A CN 202011576088 A CN202011576088 A CN 202011576088A CN 112414707 A CN112414707 A CN 112414707A
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- harmonic reducer
- ball screw
- fatigue test
- supporting plate
- load
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
- G01M13/02—Gearings; Transmission mechanisms
- G01M13/027—Test-benches with force-applying means, e.g. loading of drive shafts along several directions
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- General Physics & Mathematics (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention discloses a device for a fatigue test of a harmonic reducer, which comprises a rotary power device, wherein the rotary power device is connected with the harmonic reducer, the harmonic reducer is connected with a ball screw through a torque sensor, the ball screw is in threaded connection with a load disc, and the end part of the ball screw is connected with a revolution number recording device; the load plate is connected with a slide rail which is arranged in parallel with the ball screw in a sliding way. The invention tests the load capacity of the tested harmonic reducer by driving the ball screw to lift the heavy object, can also test the fatigue life of the tested harmonic reducer under a certain load torque, can simulate a more real working condition environment, fills the blank in the field of the load and fatigue test of the harmonic reducer, and has the advantages of low manufacturing cost, strong practicability and convenient operation. This advantage convenient to installation and dismantlement is favorable to promoting, strengthens market competition.
Description
Technical Field
The invention belongs to the field of machinery, and particularly relates to a device for a fatigue test of a harmonic reducer.
Background
The related technologies for the load and fatigue test of the harmonic reducer are less, the existing experimental device is expensive in manufacturing cost and few in purchasing channels, and the requirements of researchers for accurately detecting and testing the performance of the harmonic reducer at relatively low cost cannot be met.
Disclosure of Invention
In order to solve the problems, the invention provides a device for a fatigue test of a harmonic reducer. The invention tests the load capacity of the tested harmonic reducer by driving the ball screw to lift the heavy object, can also test the fatigue life of the tested harmonic reducer under a certain load torque, can simulate a more real working condition environment, fills the blank in the field of the load and fatigue test of the harmonic reducer, and has the advantages of low manufacturing cost, strong practicability and convenient operation. This advantage convenient to installation and dismantlement is favorable to promoting, strengthens market competition.
In order to achieve the technical effects, the technical scheme of the invention is as follows:
a device for a fatigue test of a harmonic reducer comprises a rotary power device, wherein the rotary power device is connected with the harmonic reducer, the harmonic reducer is connected with a ball screw through a torque sensor, the ball screw is in threaded connection with a load disc, and the end part of the ball screw is connected with a revolution number recording device; the load plate is connected with a slide rail which is arranged in parallel with the ball screw in a sliding way.
In a further improvement, the revolution recording device is an encoder, and an input shaft of the encoder is connected with a ball screw.
In a further improvement, one end of the slide rail is fixedly connected with a middle supporting plate, and the other end of the slide rail is connected with a lower supporting plate; the middle supporting plate and the lower supporting plate are fixed on the fixing frame.
In a further improvement, an upper supporting plate is fixed on the fixing frame; the four sides of the upper supporting plate are all in threaded connection with a grabbing disc used for fixing the rotary power device.
In a further improvement, the harmonic reducer is connected with a torque sensor through a first coupling, and the torque sensor is connected with a ball screw through a second coupling; the ball screw is connected with the middle supporting plate through a bearing in a shaft coupling mode.
In a further improvement, the load plate is fixedly connected with a lead screw nut, and the lead screw nut is in threaded connection with the ball screw.
In a further improvement, the screw nut is uniformly fixed with reinforcing rib plates along the circumferential direction.
In a further improvement, the tail end of the ball screw is connected with an input shaft of an encoder through a connecting shaft sleeve, the encoder is fixed on a flange cover, and the flange cover is fixed on the lower supporting plate through screws.
The invention has the advantages that:
the invention tests the load capacity of the tested harmonic reducer by driving the ball screw to lift the heavy object, can also test the fatigue life of the tested harmonic reducer under a certain load torque, can simulate a more real working condition environment, fills the blank in the field of the load and fatigue test of the harmonic reducer, and has the advantages of low manufacturing cost, strong practicability and convenient operation. This advantage convenient to installation and dismantlement is favorable to promoting, strengthens market competition.
Drawings
FIG. 1 is a schematic illustration of an explosive structure according to the present invention;
fig. 2 is a schematic view of an assembly structure of the present invention.
The device comprises a motor-1, a harmonic reducer-2, an upper supporting plate-3, a grabbing disc-4, a fixing frame-5, a first coupler-6, a torque sensor-7, a second coupler-8, a bearing-9, a middle supporting plate-10, a ball screw-11, a slide rail-12, a load disc-13, a screw nut-14, a lower supporting plate-15, a flange cover-16, a coupling sleeve-17 and an encoder-18.
Detailed Description
The technical solution of the present invention will be described in detail below with reference to the accompanying drawings.
Example 1
As shown in fig. 1 and 2, the device for the fatigue test of the harmonic reducer comprises a motor 1, the motor 1 is fixed by a grabbing disk 4, the grabbing disk 4 is connected with an upper supporting plate 3 by threads, the upper supporting plate 3 is placed on a fixed frame 5, the harmonic reducer 2 is fixed on the motor 1, the output end of the harmonic reducer 2 is connected with the input shaft of a torque sensor 7 by a first coupler 6, the torque sensor 7 is placed on a middle supporting plate 10, the output shaft of the torque sensor 7 is connected with a ball screw 11 by a second coupler 8, the ball screw 11 is respectively fixed at the upper and lower ends by bearings 9, one of the bearings 9 is fixed on the middle supporting plate 10, the other bearing is fixed on a lower supporting plate 15, the middle supporting plate 10 and the lower supporting plate 15 are both placed on the fixed frame 5, a screw nut 14 and a load disk 13 are fixed together, the load disk 13 passes through a slide, two ends of the slide rail 12 are respectively fixed on the middle supporting plate 10 and the lower supporting plate 15 by nuts, the lower end of the ball screw 11 is connected with an input shaft of an encoder 18 through a coupling sleeve 17, the encoder 18 is fixed through a flange cover 16, and the flange cover 16 is fixed on the lower supporting plate 15 through screws.
The motor 1 is connected with a corresponding motor driver and a PLC controller to realize the control of the positive rotation, the negative rotation and the rotating speed of the motor.
The torque sensor 7 is provided with a torque display instrument which can convert a signal detected by the torque sensor into a torque value and display the torque value.
The encoder 18 is provided with a counter which can convert the input pulse signal into the number of turns of the screw rod and display the number of turns.
The load disc 13 can be added with heavy objects according to the requirement, and the load borne by the harmonic reducer can be simulated in a mode of applying heavy objects with different weights. A plurality of threaded holes are formed in the load plate 13 for fixing a heavy object, or the load plate 13 is made of iron and loads are added through an adsorption magnet.
The screw nut 14 is provided with a reinforcing rib plate to prevent the load plate 13 from being inclined due to uneven stress when a heavy object is added to the load plate.
The using method of the invention is as follows:
the equipment is well installed, motor rotation parameters (such as positive rotation, reverse rotation and rotating speed conditions) are well set through a motor driver and a PLC (programmable logic controller), a power supply is connected, the motor rotates, the output end of a speed reducer drives a transmission shaft of a torque sensor to rotate through the output of a harmonic speed reducer, an output shaft of the torque sensor drives a ball screw to rotate, the rotation of the ball screw enables a screw nut and a load disc fixed with the screw nut to move up and down along a sliding rail, and the lower end of the ball screw is connected with an encoder.
(1) When the load capacity is detected, a heavy object is gradually added on the load disc, and when the fact that the detected speed reducer cannot drive the ball screw is found, the torque detected by the torque sensor at the moment is recorded, and then the maximum load torque of the speed reducer can be obtained.
(2) When carrying out fatigue life and examining, add the heavy object on load dish, can know the moment of torsion that drives ball screw this moment through torque sensor, carry out the operation experiment to the reduction gear under this moment of torsion, until harmonic reduction gear part takes place fatigue failure and then unable during operation, can obtain the lead screw through the encoder and rotate the number of turns (the maximum revolution that harmonic reduction gear can work under this load moment of torsion promptly).
The above description is only one specific guiding embodiment of the present invention, but the design concept of the present invention is not limited thereto, and any insubstantial modification of the present invention using this concept shall fall within the scope of the invention.
Claims (8)
1. The device for the fatigue test of the harmonic reducer is characterized by comprising a rotary power device, wherein the rotary power device is connected with a harmonic reducer (2), the harmonic reducer (2) is connected with a ball screw (11) through a torque sensor (7), the ball screw (11) is in threaded connection with a load disc (13), and the end part of the ball screw (11) is connected with a revolution number recording device; the load disc (13) is connected with a slide rail (12) which is arranged in parallel with the ball screw (11) in a sliding way.
2. The device for the fatigue test of the harmonic reducer according to claim 1, wherein the revolution recording means is an encoder (18), and an input shaft of the encoder (18) is connected to the ball screw (11).
3. The device for the fatigue test of the harmonic reducer according to claim 1, wherein one end of the slide rail (12) is fixedly connected with a middle supporting plate (10), and the other end is connected with a lower supporting plate (15); the middle supporting plate (10) and the lower supporting plate (15) are fixed on the fixed frame (5).
4. The device for the fatigue test of the harmonic reducer according to claim 1, wherein an upper supporting plate (3) is fixed on the fixing frame (5); four sides of the upper supporting plate (3) are all in threaded connection with a grabbing disc (4) used for fixing a rotary power device.
5. The device for the fatigue test of the harmonic reducer according to claim 3, wherein the harmonic reducer (2) is connected with a torque sensor (7) through a first coupling (6), and the torque sensor (7) is connected with a ball screw (11) through a second coupling (8); the ball screw (11) is connected with the middle supporting plate (10) through a bearing (9) in a shaft coupling mode.
6. The device for the fatigue test of the harmonic reducer according to claim 1, wherein the load plate (13) is fixedly connected with a screw nut (14), and the screw nut (14) is in threaded connection with the ball screw (11).
7. The device for the fatigue test of the harmonic reducer according to claim 6, wherein the screw nut (14) is uniformly fixed with reinforcing ribs along the circumferential direction.
8. The device for the fatigue test of the harmonic reducer according to claim 1, wherein the end of the ball screw (11) is connected with the input shaft of the encoder (18) through a coupling sleeve (17), the encoder (18) is fixed on a flange cover (16), and the flange cover (16) is fixed on the lower supporting plate (15) through screws.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011576088.3A CN112414707A (en) | 2020-12-28 | 2020-12-28 | Device for fatigue test of harmonic reducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011576088.3A CN112414707A (en) | 2020-12-28 | 2020-12-28 | Device for fatigue test of harmonic reducer |
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| Publication Number | Publication Date |
|---|---|
| CN112414707A true CN112414707A (en) | 2021-02-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011576088.3A Pending CN112414707A (en) | 2020-12-28 | 2020-12-28 | Device for fatigue test of harmonic reducer |
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| CN (1) | CN112414707A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113418699A (en) * | 2021-08-24 | 2021-09-21 | 江苏凯博传动设备有限公司 | Roller carrier speed reducer adaptability testing arrangement |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108287072A (en) * | 2018-03-07 | 2018-07-17 | 中机生产力促进中心 | A kind of robot precision speed reduction device method for testing fatigue life |
| CN108398259A (en) * | 2018-01-08 | 2018-08-14 | 西安交通大学 | A kind of harmonic speed reducer step drop acceleration service life test method |
| CN108956137A (en) * | 2018-09-10 | 2018-12-07 | 夏新春 | A kind of harmonic wave speed reducing machine performance detection mechanism |
| CN208705041U (en) * | 2018-08-22 | 2019-04-05 | 大连交通大学 | A kind of Proportional valve load equipment |
| CN208953675U (en) * | 2018-10-26 | 2019-06-07 | 深圳市富源盛电子科技有限公司 | Motor load tester |
-
2020
- 2020-12-28 CN CN202011576088.3A patent/CN112414707A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108398259A (en) * | 2018-01-08 | 2018-08-14 | 西安交通大学 | A kind of harmonic speed reducer step drop acceleration service life test method |
| CN108287072A (en) * | 2018-03-07 | 2018-07-17 | 中机生产力促进中心 | A kind of robot precision speed reduction device method for testing fatigue life |
| CN208705041U (en) * | 2018-08-22 | 2019-04-05 | 大连交通大学 | A kind of Proportional valve load equipment |
| CN108956137A (en) * | 2018-09-10 | 2018-12-07 | 夏新春 | A kind of harmonic wave speed reducing machine performance detection mechanism |
| CN208953675U (en) * | 2018-10-26 | 2019-06-07 | 深圳市富源盛电子科技有限公司 | Motor load tester |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113418699A (en) * | 2021-08-24 | 2021-09-21 | 江苏凯博传动设备有限公司 | Roller carrier speed reducer adaptability testing arrangement |
| CN113418699B (en) * | 2021-08-24 | 2021-11-05 | 江苏凯博传动设备有限公司 | Roller carrier speed reducer adaptability testing arrangement |
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