CN117346940A - Dynamic torque detection device for machine tool feeding system - Google Patents
Dynamic torque detection device for machine tool feeding system Download PDFInfo
- Publication number
- CN117346940A CN117346940A CN202311561112.XA CN202311561112A CN117346940A CN 117346940 A CN117346940 A CN 117346940A CN 202311561112 A CN202311561112 A CN 202311561112A CN 117346940 A CN117346940 A CN 117346940A
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- motor
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- pulley
- torque detection
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- 238000001514 detection method Methods 0.000 title claims abstract description 27
- 238000004804 winding Methods 0.000 claims description 8
- 230000003014 reinforcing effect Effects 0.000 claims description 3
- 230000008878 coupling Effects 0.000 abstract description 14
- 238000010168 coupling process Methods 0.000 abstract description 14
- 238000005859 coupling reaction Methods 0.000 abstract description 14
- 230000000694 effects Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/0028—Force sensors associated with force applying means
- G01L5/0042—Force sensors associated with force applying means applying a torque
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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
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
Abstract
The invention belongs to the technical field of mechanical structures, and particularly relates to a dynamic torque detection device for a machine tool feeding system. The torque variation of the servo motor of the feeding system in operation can be rapidly measured. And further provides a data basis for the detection of assembly errors. The device comprises a torque detection part and a loading part which are arranged on a base, wherein the torque detection part comprises a servo motor and a torque sensor; the torque sensor is fixed on the motor base, the motor shaft is connected with one end of the torque sensor through the first coupler, and the other end of the torque sensor is connected with the first end of the screw rod; the screw rod is connected with the bottom of the workbench through a screw slider; the loading part comprises a bracket and a loading part servo motor; a dragging block is arranged at the top of the workbench; the pulley is rotatably arranged on the bracket through a pulley fixing frame, and the reel is fixed on the base through a reel fixing frame; the motor shaft is connected with the reel through a coupling III; one end of a connecting rope is connected with the dragging block, and the connecting rope is fixed on the reel after being turned by the pulley.
Description
Technical Field
The invention belongs to the technical field of mechanical structures, and particularly relates to a dynamic torque detection device for a machine tool feeding system.
Background
After the machine tool feeding system is operated for a long time, the machine tool feeding system is often in a state of unsmooth operation and clamping stagnation. There are many reasons for this, especially assembly errors due to assembly, which can significantly degrade the accuracy of the machine tool. Therefore, the assembly error of the feeding system needs to be detected, and a set of detection device proposal is designed aiming at the detection of the assembly error, namely, the position where the assembly error occurs is judged by detecting the torque change of the servo motor when the feeding system operates.
The traditional servo motor torque detection device is simple in structure, only detects a single component, only applies a certain fixed torque during testing, and cannot simulate torque change under the actual running condition.
Disclosure of Invention
The invention provides a dynamic torque detection device for a machine tool feeding system, aiming at the defects existing in the prior art.
In order to achieve the purpose, the invention adopts the following technical scheme that the device comprises a torque detection part and a loading part which are arranged on a base, and is characterized in that the torque detection part comprises a servo motor, a first coupling, a second coupling, a torque sensor, a motor seat and a screw rod; the torque sensor is fixed on the motor seat through a sensor bracket, a motor shaft of the motor is connected with one end of the torque sensor through a first coupler, and the other end of the torque sensor is connected with the first end of the screw rod through a second coupler; the second end of the screw rod is rotatably supported on a base (by a bearing seat and the like); a sliding rail is respectively arranged on the base and two sides of the screw rod, a workbench is in sliding connection with the sliding rail, and the screw rod is connected with the bottom of the workbench through a nut sliding block;
the loading part comprises a bracket arranged on the base, a servo motor (a small servo motor) of the loading part, a reel, a pulley and a mandrel; a dragging block is arranged at the top of the workbench; the pulley is rotatably arranged on the bracket through a pulley fixing frame, the winding wheel is fixed on the base through a winding wheel fixing frame, and the winding wheel is rotatably arranged on the winding wheel fixing frame; a motor shaft of the loading part servo motor is connected with the reel through a third coupler; one end of a connecting rope is connected with the dragging block, and the connecting rope is fixed on the reel after being turned by the pulley.
Further, the motor base is fixed on the base, and the servo motor is fixed on one side of the motor base.
Further, the torque sensor is mounted on a sensor bracket which is fastened to the motor base.
Further, the workbench is connected with a pull cover through bolts, and the workbench moves to drive the pull cover to move for protection.
Further, two rib plates for reinforcing the motor base are respectively arranged at two ends of the motor base.
Further, a waist-shaped hole is formed in the support, the pulley fixing frame is fixed to the support through a connecting piece, and the connecting piece penetrates through the waist-shaped hole and is locked by the locking piece.
Compared with the prior art, the invention has the beneficial effects.
The torque detection mechanism can rapidly detect the torque change of the servo motor of the feeding system in working. The method is suitable for testing the torque change of the feeding system in no-load operation or normal load, and further provides a data base for detection of assembly errors, and is simple and reliable to operate.
Drawings
The invention is further described below with reference to the drawings and the detailed description. The scope of the present invention is not limited to the following description.
Fig. 1 is a schematic diagram of the overall structure of the present invention.
Fig. 2 is a schematic structural view of the torque detecting portion of the present invention.
Fig. 3 is a schematic structural view of the force applying portion of the present invention.
Fig. 4 is a side view of the overall structure of the present invention.
In the figure, 1 is a servo motor, 2 is a coupling I, 5 is a coupling II, 3 is a sensor fixing frame, 4 is a torque sensor, 6 is a motor base, 7 is a lead screw, 8 is a reel fixing frame, 9 is a loading part servo motor, 10 is a pulley, 11 is a mandrel, 12 is a pulley fixing frame, 13 is a bracket, 14 is a dragging block, 15 is a coupling III, 16 is a reel, and 17 is a pull cover.
Detailed Description
As shown in fig. 1 to 4, the dynamic torque detection device for a machine tool feed system includes:
embodiment 1, the dynamic torque detecting device may be divided into two parts: the first is a torque detecting part and the second is a loading part.
The torque detection part comprises a servo motor 1, a first coupler 2, a second coupler 5, a torque sensor 4, a sensor fixing frame 3, a motor base 6, a screw rod 7 and a pull cover 17.
The loading part mainly comprises a bracket 13, a loading part servo motor 9, a third coupling 15, a reel fixing frame 8, a reel 16, a pulley 10, a pulley fixing frame 12, a mandrel 11 and a dragging block 14.
The middle part of the sensor fixing frame 3 in the torque detection part is cut and hollowed, two parallel plates are arranged in the sensor fixing frame 3, two countersunk holes are respectively formed in the upper surface of the sensor fixing frame, the aperture is consistent with that of a sensor threaded hole, and the purpose is to position and fasten the torque sensor 4. Counter sunk holes are formed in the two ends of the transverse plate, the aperture is slightly larger than the aperture of a threaded hole in the motor base, the sensor fixing frame 3 is fastened on the motor base 6, translation in the X-axis direction and Y-axis direction of the sensor fixing frame 3 and rotation in the Z-axis direction can be adjusted according to the aperture, and coaxiality between the torque sensor 4 and the servo motor 1 and the screw rod 7 can be adjusted. The pull cover 17 is connected with a workbench through bolts, the pull cover 17 is driven by the movement of the workbench, and the pull cover contracts and extends during operation, so that the protection effect is achieved. The sensor 4 is connected with the motor 1 and the screw rod 7 through the first coupling and the second coupling, when the motor 1 rotates, torque is generated, the load is changed, the torque is changed, and the torque can be measured by using the torque sensor 4. To motor cabinet 6, both ends are equipped with two gusset respectively, and the effect of gusset is reinforcing motor cabinet 6 intensity, and the purpose prevents motor cabinet overall length overlength, leads to the motor cabinet to take place to shake and deformation when the system operation. Waist-shaped holes are formed in the two side walls, and the purpose is to fasten the torque sensor 4 on the sensor fixing frame 3 from the waist-shaped holes of the side walls after the coaxiality between the torque sensor 4 and the servo motor 1 and the screw rod 7 is adjusted.
The central shaft 11 of the loading part passes through the central hole of the pulley 10 to fix the pulley 10 on the pulley fixing frame 12, and the fine wire (namely the connecting rope) passes through the pulley 10 to enable the pulley fixing frame 12 to be provided with a counter-sunk hole for fixing. Two waist-shaped holes are designed on the bracket 13, so that bolts on the pulley fixing frame 12 can pass through the waist-shaped holes and move up and down to adjust the position, and the purpose is to adjust the position of the pulley fixing frame, thereby changing the direction of the applied force. The bracket 13 is welded on the platform and plays a role of fixing and supporting. The reel 16 is fixed on the reel fixing frame 8 and is connected with the loading part servo motor 9 through the three couplings 15, the motor drives the reel 16 to rotate, loosening and tightening of the thin wire are achieved, one end of the thin wire is connected to the dragging block 14 on the workbench, and accordingly the effect of applying load on the workbench of the feeding system is achieved.
In embodiment 2, the bottom surfaces of the two ends of the motor base 6 are fixed by using threaded connection. The measuring range of the torque sensor 4 is determined according to the torque of the servo motor 1 during operation, the model size of the torque sensor 4 is further determined, and the model of the coupler 25 is determined according to the motor 1, the torque sensor 4 and the shaft diameter of the screw rod end. According to the sizes of the torque sensor 4 and the first and second couplings 2 and 5, the motor base 6 is improved, the length of the motor base 6 is prolonged, the motor base 6 can accommodate the torque sensor 4 and the coupling 25, rib plates are added on two sides of the motor base 6 to increase the overall strength of the motor base, vibration is reduced, and waist-shaped holes are formed in two sides of the motor base 6. The servo motor 1 is connected with the motor base 6 through a bolt, is connected with the torque sensor 4 through the coupler 2, and the other end of the torque sensor 4 is connected with the screw rod end through the coupler 5. The torque sensor 4 is connected with the sensor fixing frame 3 through the screw holes on two sides, the screw holes are formed in two side walls of the sensor fixing frame 3 and used for connecting the torque sensor 4, the torque sensor is fixedly connected through four screw holes above the motor base 6, the countersunk head hole above the sensor fixing frame 3 is slightly larger than the screw hole of the motor base 6, the degree of freedom of the torque sensor 4 is convenient to adjust, and the servo motor 1, the torque sensor 4 and the screw rod 7 are coaxial. The pull cover 17 is connected with a workbench through bolts, the pull cover 17 is driven by the movement of the workbench, and the pull cover contracts and extends during operation to play a role in protection, and meanwhile, the torque can be changed. The function of the waist-shaped holes on the two sides of the motor base 6 is to fix the sensor 4 after the torque sensor 4 adjusts the degree of freedom. The servo motor 1 operates to drive the feed screw 7 to rotate, and the screw rotates to drive the workbench to axially move. A dragging block 14 is fixed on the workbench, one end of the dragging block 14 is provided with a circular lifting lug which is used for being connected with a force application device, a force application fine wire is fixed on a reel 16 by bypassing a fixed pulley 10, and the reel 16 is connected with a loading part servo motor 9 through a coupling three 15. The fixed pulley 10 is fixed on a pulley 10 fixing frame through a mandrel 11, a countersunk hole is formed in the pulley 10 fixing frame, and the fixed pulley is fixedly connected with a bracket 13 through a long screw. The bracket 13 is provided with a waist-shaped hole, so that the pulley 10 fixing frame can move up and down along the waist-shaped hole, and the aim of changing the force application direction to simulate the actual situation is fulfilled.
The working principle of the invention is as follows:
the workbench is driven to move through the rotation of the lead screw, the dragging block 14 on the workbench is driven to move, meanwhile, the dragging block 14 drives the connecting wire to move to stretch, the connecting wire penetrates through the fixed pulley 10 to change the moving direction and is wound on the reel 16, the reel 16 is connected with the loading part servo motor 1 through the three couplings 15, and when the dragging block 14 moves far away, the loading part servo motor 1 works to tighten the connecting wire to apply fixed pulling force to the dragging block.
In the torque detection part, a motor seat 6 is connected with a sensor fixing frame 3, the sensor fixing frame 3 is connected with a torque sensor 4 through threads, and the torque sensor 4 is connected with a screw rod and a servo motor 1 through a first coupler 2 and a second coupler 5 and is coaxial. When the drag block 14 is stressed, the torque sensor 4 can be used to measure the overall torque change of the feed system during operation.
The above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art will understand that; the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced with equivalents; such modifications and substitutions do not depart from the spirit of the invention, which is defined by the following claims.
Claims (6)
1. A dynamic torque detection device for lathe feed system, including torque detection portion, loading portion, its characterized in that: the torque detection part comprises a servo motor, a first coupler, a second coupler, a torque sensor, a motor base and a screw rod; the torque sensor is fixed on the motor base through a sensor bracket, a motor shaft of the servo motor is connected with one end of the torque sensor through a first coupler, and the other end of the torque sensor is connected with a first end of the screw rod through a second coupler; the second end of the screw rod is rotatably supported on the base; a sliding rail is respectively arranged on the base and two sides of the screw rod, a workbench is in sliding connection with the sliding rail, and the screw rod is connected with the bottom of the workbench through a nut sliding block;
the loading part comprises a bracket arranged on the base, a servo motor of the loading part, a reel and a pulley; a dragging block is arranged at the top of the workbench; the pulley is rotatably arranged on the bracket through a pulley fixing frame, the winding wheel is fixed on the base through a winding wheel fixing frame, and the winding wheel is rotatably arranged on the winding wheel fixing frame; a motor shaft of the loading part servo motor is connected with the reel through a third coupler; one end of a connecting rope is connected with the dragging block, and the connecting rope is fixed on the reel after being turned by the pulley.
2. A dynamic torque detection apparatus for a machine tool feed system according to claim 1, wherein: the motor cabinet is fixed on the base, and the servo motor is fixed on one side of the motor cabinet.
3. A dynamic torque detection apparatus for a machine tool feed system according to claim 1, wherein: the torque sensor is arranged on a sensor bracket, and the sensor bracket is fastened on the motor base.
4. A dynamic torque detection apparatus for a machine tool feed system according to claim 1, wherein: the workbench is connected with a pull cover through bolts, and the workbench moves to drive the pull cover to move for protection.
5. A dynamic torque detection apparatus for a machine tool feed system according to claim 1, wherein: two rib plates for reinforcing the motor base are respectively arranged at two ends of the motor base.
6. A dynamic torque detection apparatus for a machine tool feed system according to claim 1, wherein: the support is provided with a waist-shaped hole, the pulley fixing frame is fixed on the support through a connecting piece, and the connecting piece passes through the waist-shaped hole and is locked by a locking piece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311561112.XA CN117346940A (en) | 2023-11-21 | 2023-11-21 | Dynamic torque detection device for machine tool feeding system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311561112.XA CN117346940A (en) | 2023-11-21 | 2023-11-21 | Dynamic torque detection device for machine tool feeding system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117346940A true CN117346940A (en) | 2024-01-05 |
Family
ID=89363291
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311561112.XA Pending CN117346940A (en) | 2023-11-21 | 2023-11-21 | Dynamic torque detection device for machine tool feeding system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117346940A (en) |
-
2023
- 2023-11-21 CN CN202311561112.XA patent/CN117346940A/en active Pending
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