CN215767458U - Non-scalar tool for measuring minimum rotation torque of ball screw - Google Patents
Non-scalar tool for measuring minimum rotation torque of ball screw Download PDFInfo
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- CN215767458U CN215767458U CN202121920529.7U CN202121920529U CN215767458U CN 215767458 U CN215767458 U CN 215767458U CN 202121920529 U CN202121920529 U CN 202121920529U CN 215767458 U CN215767458 U CN 215767458U
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Abstract
The utility model relates to a non-scalar tool for measuring the minimum rotation torque of a ball screw, which comprises a base, wherein the front end, the middle and the rear end of the base are sequentially provided with a front bearing seat, a middle bearing seat and a rear bearing seat; a stabilizing block is arranged between the middle bearing seat and the front bearing seat, the rear end of the stabilizing block is provided with a rotating shaft which penetrates through the middle bearing seat to be connected with the first coupler, and the front end is provided with a rotating shaft which penetrates through the front bearing seat; a screw input shaft is arranged in front of the front bearing seat, and a second coupler is arranged at the rear end of the screw input shaft and connected with a rotating shaft at the front end of the stabilizing block; the gauge rod mounting block and the stabilizing block are both spaced from the top surface of the base by a certain distance. The utility model has simple structure and can measure the torque of the screw rod in the installation state.
Description
Technical Field
The utility model belongs to the technical field of torque measurement, and particularly relates to a non-standard measuring tool for measuring the minimum rotation torque of a ball screw in optical precision machinery.
Background
In optical precision machinery, a ball screw is usually adopted to convert rotary motion into linear motion or convert linear motion into rotary motion, so that the precision testing device has the characteristics of high assembly precision requirement and difficulty in disassembly after assembly is finished, and the minimum rotation torque of the screw needs to be detected after assembly is finished so as to test the precision of the screw and the assembly process.
In the prior art, no standard detection tool for measuring the minimum rotation torque of the screw rod is provided, and a targeted non-standard measuring tool is generally designed according to a specific application scene.
Patent CN204439258U discloses a torque detection device for a lead screw, which is technically characterized in that a motor and a torque sensor are used to measure the torque of the lead screw.
The Chinese patent application No. 201910508162.9 discloses a lead screw pretightening force detection device for a high-speed ball screw feeding test, which is technically characterized in that an axial force drive retaining device and a side wire harness guide device are designed to limit pretightening force in the axial direction of the ball screw so as to improve the accuracy of detection data and the stability of the detection data.
The chinese patent application No. 201710446467.2 discloses a torque detector for a ball screw pair, and the technical core of the torque detector is to measure by using a torque sensor.
Patent CN212621452U discloses a ball torsion testing arrangement, and its technical core is that the lead screw is driven by servo motor, reacts ball's torsion through pressure sensor.
The screw torque measurement technology is comprehensively analyzed, mostly the torque is measured by using a servo motor and a torque sensor, and the structure is complex; the torque range measured by the device is only specific to the screw, and is also specific to the situation that the ball screw is not assembled, so that the torque of the screw after assembly cannot be accurately measured.
SUMMERY OF THE UTILITY MODEL
The present invention is directed to solve the above problems of the prior art, and an object of the present invention is to provide a non-standard measuring tool having a simple structure and capable of measuring a minimum torque after a ball screw is assembled.
The technical scheme of the utility model is as follows:
a non-standard measuring tool for measuring the minimum rotation torque of a ball screw is characterized in that: the bearing comprises a rectangular base, wherein a front bearing seat, a middle bearing seat and a rear bearing seat are sequentially and fixedly arranged at the front end, the middle end and the rear end of the base, the front bearing seat, the middle bearing seat and the rear bearing seat are respectively provided with a shaft hole, and the axes of the shaft holes are on the same straight line; a measuring rod mounting block is arranged between the rear bearing block and the middle bearing block, a measuring rod inserting hole penetrating through two ends of the measuring rod mounting block is formed in the measuring rod mounting block, a measuring rod is movably inserted in the measuring rod inserting hole, scales are arranged on the measuring rod, the axis of the measuring rod is perpendicular to the axis of the shaft hole of each bearing block, a rotating shaft inserted in the shaft hole of the rear bearing block is arranged on one side of the measuring rod mounting block, and a first coupler is arranged on the other side of the measuring rod mounting block; a stabilizing block is arranged between the middle bearing seat and the front bearing seat, the front end and the rear end of the stabilizing block are respectively provided with a rotating shaft, the rotating shaft at the rear end penetrates through the shaft hole of the middle bearing seat and is connected with the first coupler, and the rotating shaft at the front end penetrates through the shaft hole of the front bearing seat; a screw input shaft is arranged in front of the front bearing seat, a second coupler is arranged at the rear end of the screw input shaft, and the second coupler is connected with a rotating shaft at the front end of the stabilizing block; the gauge rod mounting block and the stabilizing block are both spaced from the top surface of the base by a certain distance.
The utility model has the following advantages:
the measuring tool realizes the measurement of the minimum torque of the screw rod through the measuring rod, and has a simpler structure compared with similar measuring tools using motors and sensors;
the utility model can realize the torque detection after the lead screw is assembled, and compared with similar measuring tools, the measuring result of the utility model comprises the friction resistance and the like formed after the lead screw is assembled, and the measuring result is closer to the actual situation.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic exploded view of the present invention;
fig. 3 is a schematic view of the state of use of the present invention.
Detailed Description
As shown in fig. 1 and 2, the utility model comprises a rectangular base 1, wherein a front bearing seat 2, a middle bearing seat 3 and a rear bearing seat 4 are fixedly arranged at the front end, the middle end and the rear end of the base in sequence, the front bearing seat, the middle bearing seat and the rear bearing seat are all provided with shaft holes, and the axes of the shaft holes are on the same straight line; a measuring rod mounting block 5 is arranged between the rear bearing block 4 and the middle bearing block 3, a measuring rod inserting hole 51 penetrating through two ends of the measuring rod mounting block is arranged on the measuring rod mounting block 5, a measuring rod 6 is movably inserted in the measuring rod inserting hole, scales are arranged on the measuring rod, the axis of the measuring rod is vertical to the axis of the shaft hole of each bearing block, a rotating shaft inserted in the shaft hole of the rear bearing block is arranged on one side of the measuring rod mounting block 5, and a first coupler 52 is arranged on the other side of the measuring rod mounting block; a stabilizing block 7 is arranged between the middle bearing block 3 and the front bearing block 2, the front end and the rear end of the stabilizing block are respectively provided with a rotating shaft, the rotating shaft at the rear end penetrates through the shaft hole of the middle bearing block and is connected with the first coupler, and the rotating shaft at the front end penetrates through the shaft hole of the front bearing block; a screw input shaft 8 is arranged in front of the front bearing seat 2, a second coupling 81 is arranged at the rear end of the screw input shaft 8, and a second coupling 82 is connected with a rotating shaft at the front end of the stabilizing block 7; the measuring rod mounting block 5 and the stabilizing block 7 are arranged at a certain distance from the top surface of the base 1.
When the utility model is implemented, leveling bolts 9 which penetrate through the base up and down can be respectively arranged at 4 corners of the base 1 and are used for adjusting the height of the base and adjusting the base to be in a horizontal state.
The stabilizing blocks mainly play a role of balancing weight, so that the front end and the rear end of the base are stressed in balance, and the stability of the device is improved.
In the specific implementation of the utility model, in order to facilitate the installation and the disassembly of each component, the base can be arranged into a split type assembly structure and comprises a front mounting plate 11 for fixing a front bearing seat, a rear mounting plate 12 for fixing a rear bearing seat and a middle mounting plate 13 for fixing a middle bearing seat, wherein the front mounting plate and the rear mounting plate are respectively provided with a clamping groove, and two ends of the middle mounting plate 13 are respectively supported in the clamping grooves on the front mounting plate 11 and the rear mounting plate 12 and are fixed through screws 10; the top surfaces of the front mounting plate, the rear mounting plate and the middle mounting plate are flush.
As shown in FIG. 3, when the present invention is used, the front end of the lead screw input shaft 8 is connected with the lead screw 15 installed on the measured instrument 14, one end of the measuring rod 6 is pushed to the other end, and if the two ends of the measuring rod are unbalanced, a certain torque is generated. And gradually finely adjusting the measuring rod, and when the screw rod just starts to rotate by overcoming the friction force, observing that the measuring rod slightly rotates, and reading the scale on the measuring rod at the moment. The scale on the measuring stick can be marked as length scale and can also be marked as torque scale. When the scales on the measuring rod are length scales, the torque T of the screw rod can be calculated according to the lengths of the two ends of the measuring rod at the moment. The calculation method is as follows:
assuming that the density of the used measuring rod is even rho, the axial circle run-out tolerance of the measuring rod reaches the standard of the measuring tool, the error can be ignored, and the radius is r, then:
in the formula LLeft side of、LRight sideThe lengths of the left end and the right end of the measuring rod are respectively, and g is the gravity acceleration and is a constant.
For convenience of use, various torque results can be calculated in advance according to the formula, the torque results are marked on the measuring rod as torque scales, and the torque values can be directly read on the measuring rod when the torque scales are used.
Claims (3)
1. A non-standard measuring tool for measuring the minimum rotation torque of a ball screw is characterized in that: the bearing comprises a rectangular base, wherein a front bearing seat, a middle bearing seat and a rear bearing seat are sequentially and fixedly arranged at the front end, the middle end and the rear end of the base, the front bearing seat, the middle bearing seat and the rear bearing seat are respectively provided with a shaft hole, and the axes of the shaft holes are on the same straight line; a measuring rod mounting block is arranged between the rear bearing block and the middle bearing block, a measuring rod inserting hole penetrating through two ends of the measuring rod mounting block is formed in the measuring rod mounting block, a measuring rod is movably inserted in the measuring rod inserting hole, scales are arranged on the measuring rod, the axis of the measuring rod is perpendicular to the axis of the shaft hole of each bearing block, a rotating shaft inserted in the shaft hole of the rear bearing block is arranged on one side of the measuring rod mounting block, and a first coupler is arranged on the other side of the measuring rod mounting block; a stabilizing block is arranged between the middle bearing seat and the front bearing seat, the front end and the rear end of the stabilizing block are respectively provided with a rotating shaft, the rotating shaft at the rear end penetrates through the shaft hole of the middle bearing seat and is connected with the first coupler, and the rotating shaft at the front end penetrates through the shaft hole of the front bearing seat; a screw input shaft is arranged in front of the front bearing seat, a second coupler is arranged at the rear end of the screw input shaft, and the second coupler is connected with a rotating shaft at the front end of the stabilizing block; the gauge rod mounting block and the stabilizing block are both spaced from the top surface of the base by a certain distance.
2. The non-standard gauge for measuring ball screw minimum rotational torque according to claim 1, wherein: and leveling bolts which vertically penetrate through the base are respectively arranged at 4 corners of the base.
3. The non-standard gauge for measuring ball screw minimum rotational torque according to claim 1, wherein: the base is of a split type assembly structure and comprises a front mounting plate for fixing a front bearing seat, a rear mounting plate for fixing a rear bearing seat and a middle mounting plate for fixing a middle bearing seat, wherein the front mounting plate and the rear mounting plate are respectively provided with a clamping groove, and two ends of the middle mounting plate are respectively supported in the clamping grooves on the front mounting plate and the rear mounting plate and are fixed through screws; the top surfaces of the front mounting plate, the rear mounting plate and the middle mounting plate are flush.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121920529.7U CN215767458U (en) | 2021-08-16 | 2021-08-16 | Non-scalar tool for measuring minimum rotation torque of ball screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121920529.7U CN215767458U (en) | 2021-08-16 | 2021-08-16 | Non-scalar tool for measuring minimum rotation torque of ball screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215767458U true CN215767458U (en) | 2022-02-08 |
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ID=80075406
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121920529.7U Active CN215767458U (en) | 2021-08-16 | 2021-08-16 | Non-scalar tool for measuring minimum rotation torque of ball screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215767458U (en) |
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2021
- 2021-08-16 CN CN202121920529.7U patent/CN215767458U/en active Active
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