CN117330222B - Woodworking motor axial torque detection device and detection method thereof - Google Patents
Woodworking motor axial torque detection device and detection method thereof Download PDFInfo
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- CN117330222B CN117330222B CN202311636095.1A CN202311636095A CN117330222B CN 117330222 B CN117330222 B CN 117330222B CN 202311636095 A CN202311636095 A CN 202311636095A CN 117330222 B CN117330222 B CN 117330222B
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- 238000001514 detection method Methods 0.000 title claims abstract description 56
- 230000007246 mechanism Effects 0.000 claims abstract description 31
- 230000005540 biological transmission Effects 0.000 claims description 42
- 230000008878 coupling Effects 0.000 claims description 30
- 238000010168 coupling process Methods 0.000 claims description 30
- 238000005859 coupling reaction Methods 0.000 claims description 30
- 238000000034 method Methods 0.000 claims description 12
- 238000010998 test method Methods 0.000 claims description 6
- 238000012360 testing method Methods 0.000 claims description 5
- 238000012937 correction Methods 0.000 claims description 4
- 230000001276 controlling effect Effects 0.000 claims 1
- 230000001105 regulatory effect Effects 0.000 claims 1
- 238000005259 measurement Methods 0.000 description 10
- 238000012545 processing Methods 0.000 description 5
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- 238000009434 installation Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L3/00—Measuring torque, work, mechanical power, or mechanical efficiency, in general
- G01L3/02—Rotary-transmission dynamometers
- G01L3/04—Rotary-transmission dynamometers wherein the torque-transmitting element comprises a torsionally-flexible shaft
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L25/00—Testing or calibrating of apparatus for measuring force, torque, work, mechanical power, or mechanical efficiency
- G01L25/003—Testing or calibrating of apparatus for measuring force, torque, work, mechanical power, or mechanical efficiency for measuring torque
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L3/00—Measuring torque, work, mechanical power, or mechanical efficiency, in general
- G01L3/26—Devices for measuring efficiency, i.e. the ratio of power output to power input
Abstract
The invention relates to the technical field of torque detection, in particular to a woodworking motor axial torque detection device and a detection method thereof. The torque detection device comprises a connecting shaft mechanism and an angle sensor. The connecting shaft mechanism comprises a support, a guide rail, a first connecting shaft, a universal joint and a second connecting shaft, wherein the support is detachably connected to the base, the guide rail is fixedly connected to the support, one ends of the second connecting shaft and the first connecting shaft are respectively provided with two sides of the universal joint, the other end of the second connecting shaft is connected with the guide rail, the other end of the first connecting shaft is detachably connected with the torque sensor, and the angle sensor is arranged on the second connecting shaft. According to the invention, by arranging the connecting shaft mechanism, the torque of the obliquely-installed motor can be detected, and the detected torque is corrected in real time by measuring the inclination angle of the connecting shaft mechanism in real time, so that the detection precision of the torque detection device is improved, the application range is wider, and the cost of torque detection is reduced.
Description
Technical Field
The invention relates to the technical field of torque detection, in particular to a woodworking motor axial torque detection device and a detection method of the woodworking motor axial torque detection device.
Background
In the process of woodworking operation, the performance of the motor has great influence on the operation efficiency and the quality. The working rotation speed, torque and the like of the woodworking motor are all important performances which directly influence the operation process. The torque of the woodworking motor not meeting the working requirements may cause the following problems: 1. the processing efficiency is reduced: when the torque of the motor is insufficient, the processing efficiency of wood is reduced, and the production efficiency is affected; 2. the processing quality is reduced: when the torque of the motor is insufficient, the surface of the processed wood is possibly unsmooth, the processing precision is not high, and the problem of clamping stagnation occurs in the arrangement; 3. overload of the motor: the motor torque is insufficient and after long-time operation, so that the motor is in an overload state for a long time, the motor can be damaged, and potential safety hazards can be caused.
As shown in fig. 1, in the conventional torque detection device, an output shaft of a motor is connected to a torque sensor through a coupling, a load is arranged on the other side of the torque sensor, the motor is electrified and started to form an output torque to the load, and the torque sensor is used for measuring the output torque of the motor. However, in order to meet the processing requirement, the woodworking motor is often complicated in mounting position and difficult to detach, the conventional torque detection device cannot directly measure, and under the inclined state of the woodworking motor, the torque sensor is difficult to be reliably connected with the woodworking motor, so that the torque measurement precision is not high, meanwhile, the position direction of the torque measurement device needs to be adjusted, the torque measurement device is fixed, the preparation work before detection is complex, and the detection cost is increased.
Disclosure of Invention
Accordingly, it is necessary to provide a woodworking motor axial torque detecting device and a detecting method thereof, which solve the problems that the existing torque detecting device is difficult to detect the torque of a woodworking motor which is obliquely installed and is not easy to detach, and the torque detecting precision of the oblique woodworking motor is not high.
The invention is realized by the following technical scheme: the utility model provides a carpenter's motor axial torque detection device includes base, torque sensor, load, connecting axle mechanism, angle sensor, treater.
The load is fixedly connected with one end of the torque sensor. The torque sensor is used for detecting the torque T exerted on a load by the motor to be detected i 。
The connecting shaft mechanism comprises a bracket, a guide rail, a first connecting shaft, a universal joint and a second connecting shaft. The support can be dismantled and connect on the base, and guide rail fixed connection is on the support. One end of the second connecting shaft is connected with the guide rail in a sliding way. One end of the universal joint is fixedly connected with the other end of the second connecting shaft. One end of the first connecting shaft is fixedly connected with the other end of the universal joint. The other end of the first connecting shaft is detachably connected with the other end of the torque sensor. The support comprises an n-shaped rod, two V-shaped rods and two straight rods, one ends of the two straight rods are respectively connected to the base in a rotating mode, and the other ends of the two straight rods are respectively connected to two sides of the n-shaped rod in a detachable mode. The two ends of the V-shaped rod are fixedly connected to the base, and the middle end of the V-shaped rod is rotatably connected to the two sides of the n-shaped rod. When the straight rod is installed obliquely downwards, the plane where the n-shaped rod is located is perpendicular to the central axis of the torque sensor. When the straight rod is installed obliquely upwards, the plane where the n-shaped rod is located is parallel to the surface of the base.
The angle sensor is arranged on the second connecting shaft and is used for detecting the included angle theta between the second connecting shaft and the first connecting shaft i . The processor is used for controlling the angle theta i With torque T i Calculating the actual torque T f 。
Above-mentioned torque detection device is through setting up the axle coupling mechanism, can be with the torque transmission of the motor output of slope installation to the load on, and then realize detecting the moment of torsion of motor, through real-time measurement axle coupling mechanism inclination, base inclination, can carry out real-time correction to the moment of torsion that detects, not only improved the detection precision of torque detection device, application scope is wider simultaneously, has reduced the cost of moment of torsion detection.
Further, the second coupling includes internal splines and external splines. One end of the internal spline is fixedly connected with the universal joint. The other end of the internal spline is provided with a limiting ring. One end of the external spline penetrates through the limiting ring and is in sliding connection with the internal spline.
Further, the universal joint is a double cross universal joint, and comprises a fork joint, two half joints and two cross shafts. The two cross shafts are respectively and rotatably arranged at two ends of the fork joint, one end of each of the two half couplings is respectively arranged on the two cross shafts, and the other end of each of the two half couplings is respectively and fixedly connected with the first connecting shaft and the internal spline.
Further, the connecting shaft mechanism further comprises a locking mechanism, and the locking mechanism comprises a bearing, two extension shafts and two wing nuts. The bearing is fixedly connected to the outer wall of the inner spline. One end of each of the two extension shafts is fixedly connected to the outer wall of the bearing, and the two extension shafts are symmetrically arranged relative to the axial direction of the internal spline. The other ends of the two extension shafts respectively penetrate through the guide rails and are in threaded connection with the two butterfly nuts.
Further, the torque detecting device further comprises a gear set which is arranged on the base and used for transmitting the power output by the connecting shaft mechanism to the torque sensor. The gear set comprises two bevel gears which are vertically arranged and meshed with each other, and the two bevel gears are respectively arranged on the torque sensor and the first connecting shaft.
Further, the torque detecting device also comprises an electronic level meter which is arranged on the base and used for measuring the included angle theta between the base and the horizontal plane j . The processor is based on the included angle theta j For the actual torque T f And (5) performing correction.
The invention also provides a detection method of the woodworking motor axial torque detection device, which comprises the following steps:
s1: testing the transmission efficiency eta of the connecting shaft mechanism under different angles i And the transmission efficiency eta of the load at different angles j 。
S2: and an output shaft of the motor to be tested is arranged on the coupler, and the torque detection device is arranged on the platform, so that the plane where the first connecting shaft and the second connecting shaft are positioned is vertical to the surface of the base.
S3: according to preset input voltage and input current, the motor is powered, detection data of an angle sensor, an electronic level meter and a torque sensor are read, and the detection data are sequentially recorded as included angles theta i Included angle theta j And torque T i 。
S4: according to the included angle theta i Included angle theta j For torque T i Correcting to obtain the actual torque T f 。
Further, the transmission efficiency eta i The test method of (2) is as follows: the base is horizontally placed and fixed, and the first connecting shaft is fixedly connected with the torque sensor. The output shaft of the standard motor is fixedly connected with the second connecting shaft, and the standard motor is tested at different angles theta i Under the torque T detected by the torque sensor i . Will be theta i Torque T when=0 0 As a standard torque, the transmission efficiency eta i The expression is as follows: η (eta) i =T i /T 0 。
Transmission efficiency eta j The test method of (2) is as follows: and the standard motor is arranged on the base, and an output shaft of the standard motor is fixedly connected with the torque sensor. Root of Chinese characterThe standard motor is powered according to the standard voltage and the standard current, the angle of the base is adjusted, and the base is recorded at different angles theta j Under the torque T detected by the torque sensor j . Corresponding torque T when the base is in the horizontal direction 1 As an initial torque, the transmission efficiency η j The expression is as follows: η (eta) j =T j /T 1 。
Compared with the prior art, the invention has the following beneficial effects:
according to the invention, the motor to be tested is electrified and started to drive the external spline to synchronously rotate, so that the internal spline and the universal joint are driven to synchronously rotate, the output torque is synchronously transmitted to a load, and the torque sensor is used for detecting the output torque. Because the external spline can slide in the internal spline, adjust the interval of shaft coupling and internal spline, can be applicable to more difficult detachable carpenter's motor, improve the assembly efficiency before detecting, improve the steadiness of installation. In addition, through support and the guide rail that set up, not only can make the contained angle difference of two coupling halves of universal joint and fork joint keep in the tolerance within range, ensure the high transmission efficiency of universal joint, make torque detection device's detection scope bigger simultaneously, can be in 0 ~ 180's motor to motor output shaft and horizontal plane contained angle and carry out the moment of torsion detection, application scope is wide.
The torque detection device can detect the torque of the motor which is difficult to disassemble and is obliquely arranged, has wide application range, and improves the precision of torque measurement by correcting the measured torque through the transmission efficiency of the connecting shaft mechanism and the load.
Drawings
FIG. 1 is a schematic perspective view of a conventional torque detecting device in the prior art;
fig. 2 is a schematic perspective view of an axial torque detecting device of a woodworking motor in embodiment 1 of the present invention;
FIG. 3 is a schematic perspective view of the torque detecting device in FIG. 2 in another state;
FIG. 4 is a schematic perspective view of the universal joint of FIG. 2;
FIG. 5 is an exploded view of the second coupling and locking mechanism of FIG. 2;
fig. 6 is a schematic perspective view of an axial torque detecting device for a woodworking motor in embodiment 2 of the present invention;
FIG. 7 is a schematic perspective view of the torque detecting device in FIG. 6 in another state;
FIG. 8 is a partial perspective view of the gear set of FIG. 6;
fig. 9 is a step diagram of a detection method of the axial torque detection device of the woodworking motor in embodiment 3 of the present invention.
In the figure: 1. a base; 2. a torque sensor; 3. a load; 4. a connecting shaft mechanism; 41. a bracket; 411. an "n" shaped rod; 412. a "V" shaped bar; 413. a straight rod; 42. a guide rail; 43. a first connecting shaft; 44. a universal joint; 441. a fork joint; 442. a half coupling; 443. a cross shaft; 45. a second connecting shaft; 451. an internal spline; 452. an external spline; 46. a locking mechanism; 461. a bearing; 462. an extension shaft; 463. a butterfly nut; 5. an electronic level; 6. an angle sensor; 7. a gear set; 71. bevel gears; 10. and a motor to be tested.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It is noted that when an element is referred to as being "mounted to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "secured to" another element, it can be directly secured to the other element or intervening elements may also be present.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "or/and" as used herein includes any and all combinations of one or more of the associated listed items.
Example 1,
Referring to fig. 2-3, the present embodiment provides a device for detecting axial torque of a woodworking motor, which includes a base 1, a torque sensor 2, a load 3, a coupling mechanism 4, an angle sensor 6, a processor (not shown), a gear set 7, and an electronic level 5. The load 3 and the torque sensor 2 are fixedly arranged on the base 1. The load 3 is fixedly connected with one end of the torque sensor 2. The torque sensor 2 is used to detect the torque T exerted by the motor 10 under test on the load 3. In this embodiment, the two sides of the torque sensor 2 are respectively provided with a connecting shaft, and the connecting shafts are respectively and fixedly connected with the load 3 and the connecting shaft mechanism 4 through a coupler.
Referring to fig. 4-5, the coupling mechanism 4 includes a bracket 41, a guide rail 42, a first coupling 43, a universal joint 44, a second coupling 45, and a locking mechanism 46. The support 41 is detachably connected to the base 1, and the guide rail 42 is fixedly connected to the support 41. One end of the second coupling shaft 45 is slidably coupled to the guide rail 42. One end of the universal joint 44 is fixedly connected with the other end of the second connecting shaft 45. One end of the first connecting shaft 43 is fixedly connected with the other end of the universal joint 44. The other end of the first connecting shaft 43 is detachably connected to the other end of the torque sensor 2.
The bracket 41 includes an n-shaped rod 411, two V-shaped rods 412 and two straight rods 413, wherein one end of each straight rod 413 is rotatably connected to the base 1, and the other end of each straight rod 413 is detachably connected to two sides of the n-shaped rod 411. The two ends of the V-shaped rod 412 are fixedly connected to the base 1, and the middle ends are rotatably connected to the two sides of the n-shaped rod 411. The three ends of the V-shaped rod 412 form a triangular support, which can firmly support one end of the n-shaped rod 411, and the other end of the n-shaped rod 411 is supported by combining the straight rod 413, so that the bracket 41 can be firmly mounted on the base 1.
When the straight rod 413 is installed obliquely downwards, the plane where the n-shaped rod 411 is located is perpendicular to the central axis of the torque sensor 2. At this time, the first connecting shaft 43 is directly connected with the torque sensor 2, and the universal joint 44 can perform stable transmission between-45 DEG to 45 DEG with respect to the horizontal plane.
When the straight rod 413 is installed obliquely upwards, the plane of the n-shaped rod 411 is parallel to the surface of the base 1. At this time, the first connecting shaft 43 is connected with the torque sensor 2 by a commutator, so that the first connecting shaft 43 outputs a vertically downward torque and transmits the vertically downward torque to the torque sensor 2 placed horizontally, and the universal joint 44 can perform stable transmission between the angle between the universal joint and the horizontal plane by 45-135 degrees.
In this embodiment, the rail 42 is a semicircular rail 42. When the position of the second connecting shaft 45 is fixed, the lengths of the universal joint 44 and the second connecting shaft 45 are unchanged due to the fixed direction of the first connecting shaft 43, so that the included angle theta between the first connecting shaft 43 and the universal joint 44 a Included angle theta between second connecting shaft 45 and universal joint 44 b And also remain unchanged. In other embodiments, curved track 42 may also be provided such that angle θ a Angle theta b And keep the same.
The second coupling 45 includes an internal spline 451, an external spline 452, and a coupling. One end of the internal spline 451 is fixedly connected with the universal joint 44. The other end of the internal spline 451 is provided with a stop collar. One end of the external spline 452 is slidably coupled to the internal spline 451 through a stop collar. The internal spline 451 and the external spline 452 form a key connection, and can slide and stretch in the axial direction while maintaining the axial transmission, the distance between the internal spline 451 and the motor 10 to be tested is adjusted, and meanwhile, the external spline 452 can be prevented from sliding out of the internal spline 451 through the limiting ring.
The other end of the external spline 452 is fixedly connected with one end of the coupler. The other end of the coupler is detachably connected with the output shaft of the motor 10 to be tested.
In this embodiment, the universal joint 44 is a double cross universal joint, including a fork joint 441, two half joints 442, and two cross shafts 443. Two cross shafts 443 are rotatably mounted at both ends of the fork joint 441, respectively, and two coupling halves 442 each have one end mounted on the two cross shafts 443, respectively, and the other end fixedly connected with the first coupling 43 and the internal spline 451, respectively.
After the motor 10 to be tested is electrified and started, the external spline 452 is driven to synchronously rotate through the coupler, the internal spline 451 and the universal joint 44 are driven to synchronously rotate, the output torque is synchronously transmitted to the load 3, and the torque sensor 2 detects the output torque. Because the external spline 452 can slide in the internal spline 451, the distance between the coupler and the internal spline 451 is adjusted, and the assembly efficiency before detection and the installation stability are improved. In addition, through the support 41 and the guide rail 42 that set up, not only can make the contained angle difference of two half couplings 442 of universal joint 44 and fork joint 441 keep in the range that allows, ensure the high transmission efficiency of universal joint 44, make torque detection device's detection scope bigger simultaneously, can carry out the moment of torsion detection to the motor that motor output shaft and horizontal plane contained angle are in 0 ~180, application scope is wide.
The locking mechanism 46 includes a bearing 461, two extension shafts 462, two wing nuts 463. The bearing 461 is fixedly connected to the outer wall of the internal spline 451, one end of each of the two extension shafts 462 is fixedly connected to the outer wall of the bearing 461, and the two extension shafts 462 are symmetrically arranged relative to the axial direction of the internal spline 451. The other ends of the two extension shafts 462 are threaded through the guide rails 42 with two wing nuts 463, respectively. Both extension shafts 462 are slidably coupled to rail 42.
In this embodiment, a backing ring is further disposed on the outer side of the extension shaft 462, and the backing ring is located between the butterfly nut 463 and the guide rail 42, so that the butterfly nut 463 can provide a better fastening force to fix the extension shaft 462 and the guide rail 42 relatively while the extension shaft 462 and the guide rail 42 can slide reliably.
The angle sensor 6 is mounted on the second connecting shaft 45 for detecting the angle theta between the second connecting shaft 45 and the first connecting shaft 43 i . In other embodiments, two angle sensors 6 may be provided, respectively mounted on the first and second shafts 43 and 45, for detecting the angle θ between the first shaft 43 and the fork 441 a Included angle θ between second coupling shaft 45 and clevis 441 b 。
Electronic level meter5 are arranged on the base 1 and are used for measuring the included angle theta between the base 1 and the horizontal plane j . The bottom surface of the electronic level 5 is attached to the surface of the base 1.
The processor is used for: 1. according to the included angle theta i With torque T i Calculating the actual torque T f . Specifically, first according to the included angle theta i Calculating the transmission efficiency eta of the coupling 4 i Actual torque T f Can be expressed as:
。
2. according to the included angle theta j For the actual torque T f And (5) performing correction. Corrected actual torque T f Can be expressed as:
。
the torque detection device of the embodiment not only can detect the torque of the motor which is difficult to detach and obliquely arranged, has wide application range, but also can correct the measured torque through the transmission efficiency of the connecting shaft mechanism 4 and the load 3, and improves the precision of torque measurement.
EXAMPLE 2,
Referring to fig. 6-8, unlike embodiment 1, in this embodiment, the torque detection further includes a gear set 7, where the gear set 7 is mounted on the base 1, and is used to transmit the power output by the coupling mechanism 4 to the torque sensor 2. The gear set 7 includes two bevel gears 71, the two bevel gears 71 being disposed vertically and engaged with each other, the two bevel gears 71 being mounted on the torque sensor 2, the first connecting shaft 43, respectively.
In practical application, although the double cross universal coupling can drive within the range of 90 degrees, when the included angle of the universal joint 44 exceeds 45 degrees, the drive efficiency is not only sharply reduced, but also is difficult to stably detect, so that in the practical measurement, in order to ensure the measurement accuracy, only the motor with the included angle within 45 degrees is detected. By arranging the gear set 7, the torque output by the universal joint 44 is transmitted to the load 3, and further torque detection can be performed on motors with included angles of 45-135 degrees.
EXAMPLE 3,
Referring to fig. 9, the present embodiment provides a detection method of an axial torque detection device for a woodworking motor, which can be applied to the axial torque detection device for a woodworking motor in embodiment 1 to realize torque detection for the woodworking motor, and particularly for a woodworking motor that is difficult to disassemble and is installed obliquely, the motor torque can be accurately measured under the condition of undetachment. The detection method comprises the following steps:
s1: testing the transmission efficiency eta of the connecting shaft mechanism 4 under different angles i And the transmission efficiency eta of the load 3 at different angles j 。
Wherein the transmission efficiency eta i The test method of (2) is as follows: the base 1 is placed horizontally and fixed, and the first connecting shaft 43 is fixedly connected with the torque sensor 2. Specifically, the base 1 can be fixed on a leveled platform, when the reading of the electronic level 5 is just 0, the base 1 is in a horizontal state, or the base 1 is fixed on an adjustable supporting seat, and the reading of the electronic level 5 reaches 0 by adjusting the angle of the supporting seat.
The output shaft of the standard motor is fixedly connected with the second connecting shaft 45, and the standard motor is tested at different angles theta i Under the torque T detected by the torque sensor 2 i . In the test process, the standard motor is firstly arranged on the adjustable bracket 41, the standard motor is powered by rated voltage and rated current, the included angle between the second connecting shaft 45 and the first connecting shaft 43 is changed by adjusting the angle of the adjustable bracket 41, and the torque T of the standard motor is recorded i Corresponding included angle theta i . Will be theta i Torque T when=0 0 As a standard torque, the transmission efficiency eta i The expression is as follows: η (eta) i =T i /T 0 。
In order to facilitate the inquiry of the torque corresponding to the included angle, a plane coordinate system with the included angle as an X axis and the transmission efficiency as a Y axis can be established, wherein the included angle range is [ 0, 180 ], and the transmission efficiency range is [ 0,1 ]. Will measureIs included by a plurality of angles theta i And transmission efficiency T i Mapping to a plane coordinate system to form a plurality of coordinate points, performing linear fitting on the plurality of coordinate points to obtain a change curve of transmission efficiency, and recording the curve function as a transmission efficiency function Fθ i . It has been found during experimentation that for a single cross joint 44, the single joint transmission efficiency η is achieved at a transmission angle of no more than 25 ° a Can be expressed as:
wherein mu is 1 Coefficient of friction, d, of cross 443 and clevis 441 1 Journal diameter r of cross 443 1 Distance θ between two cross shafts 443 a Is the angle between the first shaft 43 and the clevis 441.
In the present embodiment, since the second coupling shaft 45 is slidably coupled to the guide rail 42, the second coupling shaft is slidably coupled to the guide rail 42 at θ i In the case of determination, θ a And theta b Can also be determined, and θ i =θ a +θ b ，∣θ a -θ b And | is less than or equal to 5 degrees. Thus, the transmission efficiency eta is not more than 45 DEG i Can be expressed as:
wherein r is 2 Length of second connecting shaft 45, θ b Is the angle eta between the fork joint 441 and the second connecting shaft 45 a The first section transmission efficiency of the double-cross-shaft universal joint can be replaced by single section transmission efficiency; η (eta) b The second joint transmission efficiency of the double-cross-shaft universal joint.
Transmission efficiency eta j The test method of (2) is as follows: the standard motor is arranged on the base 1, and an output shaft of the standard motor is fixedly connected with the torque sensor 2. The standard motor is powered by rated voltage and rated current,the angle of the base 1 is adjusted and recorded at different angles theta j Under the torque T detected by the torque sensor 2 j . Corresponding torque T when the base 1 is in the horizontal direction 1 As an initial torque, the transmission efficiency η j The expression is as follows: η (eta) j =T j /T 1 。
Multiple included angles theta to be measured j And transmission efficiency T j Mapping to a plane coordinate system to form a plurality of coordinate points, performing linear fitting on the plurality of coordinate points to obtain a change curve of transmission efficiency, and recording the curve function as a transmission efficiency function Fθ j . In the present embodiment, T 1 Approximately equal to T 0 At theta j When the angle is not more than 5 DEG, the transmission efficiency eta j May be approximately 1.
S2: the output shaft of the motor 10 to be tested is mounted on a coupler, and the torque detecting device is placed on a platform, so that the plane of the first connecting shaft 43 and the second connecting shaft 45 is perpendicular to the surface of the base 1. In actual measurement, the included angle between the plane of the first connecting shaft 43 and the second connecting shaft 45 and the surface of the base 1 is not more than 5 degrees, so as to meet the requirement of |theta a -θ b ∣≤5°。
S3: according to preset input voltage and input current, the motor is powered, and the detection data of the angle sensor 6, the electronic level meter 5 and the torque sensor 2 are read and sequentially recorded as an included angle theta i Included angle theta j And torque T i . Because the corresponding input power is different according to the different required torque in the operation process of the woodworking motor, the daily input voltage of the woodworking motor is kept during measurement.
S4: according to the included angle theta i Included angle theta j For torque T i Correcting to obtain the actual torque T f . Actual torque T f Can be expressed as:
the technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The above examples illustrate only a few embodiments of the invention, which are described in detail and are not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.
Claims (8)
1. An axial torque detection device of a woodworking motor comprises a base (1), a torque sensor (2) and a load (3); the load (3) is fixedly arranged on the base (1); the load (3) is fixedly connected with one end of the torque sensor (2); the torque sensor (2) is used for detecting the torque T exerted on the load (3) by the motor (10) to be detected i The method comprises the steps of carrying out a first treatment on the surface of the The torque detection device is characterized by comprising:
the connecting shaft mechanism (4) comprises a bracket (41), a guide rail (42), a first connecting shaft (43), a universal joint (44) and a second connecting shaft (45); the support (41) is detachably connected to the base (1), and the guide rail (42) is fixedly connected to the support (41); one end of the second connecting shaft (45) is in sliding connection with the guide rail (42); one end of the universal joint (44) is fixedly connected with the other end of the second connecting shaft (45); one end of the first connecting shaft (43) is fixedly connected with the other end of the universal joint (44); the other end of the first connecting shaft (43) is detachably connected with the other end of the torque sensor (2);
the bracket (41) comprises an n-shaped rod (411), two V-shaped rods (412) and two straight rods (413), one end of each straight rod (413) is rotatably connected to the base (1), and the other end of each straight rod is detachably connected to two sides of the n-shaped rod (411); two ends of the V-shaped rod (412) are fixedly connected to the base (1), and the middle ends of the V-shaped rod are rotatably connected to two sides of the n-shaped rod (411); when the straight rod (413) is obliquely downwards installed, the plane where the n-shaped rod (411) is located is perpendicular to the central axis of the torque sensor (2); when the straight rod (413) is obliquely upwards installed, the plane where the n-shaped rod (411) is located is parallel to the surface of the base (1);
an angle sensor (6) mounted on the second connecting shaft (45) for detecting an angle theta between the second connecting shaft (45) and the first connecting shaft (43) i ；
A processor for determining the included angle theta i With said torque T i Calculating the actual torque T f 。
2. A woodworking motor axial torque detecting device according to claim 1, characterized in that said second coupling (45) comprises internal splines (451), external splines (452); one end of the internal spline (451) is fixedly connected with the universal joint (44); a limiting ring is arranged at the other end of the internal spline (451); one end of the external spline (452) passes through the limiting ring to be in sliding connection with the internal spline (451).
3. The woodworking motor axial torque detection device according to claim 2, wherein the universal joint (44) is a double cross universal joint, and comprises a fork joint (441), two half joints (442) and two cross shafts (443); the two cross shafts (443) are respectively rotatably arranged at two ends of the fork joint (441), one end of each of the two half couplings (442) is respectively arranged on the two cross shafts (443), and the other end is respectively fixedly connected with the first connecting shaft (43) and the internal spline (451).
4. A woodworking motor axial torque detection device according to claim 2, characterized in that the coupling mechanism (4) further comprises a locking mechanism (46), the locking mechanism (46) comprising a bearing (461), two extension shafts (462), two wing nuts (463); the bearing (461) is fixedly connected to the outer wall of the internal spline (451); one end of each of the two extension shafts (462) is fixedly connected to the outer wall of the bearing (461), and the two extension shafts (462) are symmetrically arranged relative to the axial direction of the internal spline (451); the other ends of the two extension shafts (462) respectively penetrate through the guide rails (42) to be in threaded connection with the two wing nuts (463).
5. A woodworking motor axial torque detecting device according to claim 1, further comprising a gear set (7), said gear set (7) being mounted on said base (1) for transmitting power output by said coupling mechanism (4) to said torque sensor (2); the gear set (7) comprises two bevel gears (71), the two bevel gears (71) are vertically arranged and meshed with each other, and the two bevel gears (71) are respectively arranged on the torque sensor (2) and the first connecting shaft (43).
6. The woodworking motor axial torque detection device according to claim 1, further comprising an electronic level meter (5), wherein the electronic level meter (5) is mounted on the base (1) for measuring an angle θ between the base (1) and a horizontal plane j The method comprises the steps of carrying out a first treatment on the surface of the The processor is used for controlling the included angle theta j For the actual torque T f And (5) performing correction.
7. A method for detecting an axial torque detecting device of a woodworking motor, which adopts the axial torque detecting device of a woodworking motor according to any one of claims 1 to 6, characterized in that the detecting method comprises the steps of:
s1: testing the transmission efficiency eta of the connecting shaft mechanism (4) under different angles i And the transmission efficiency eta of the load (3) at different angles j ；
S2: an output shaft of a motor (10) to be tested is arranged on a coupler, a torque detection device is arranged on a platform, and the plane where a first connecting shaft (43) and a second connecting shaft (45) are positioned is vertical to the surface of a base (1);
s3: according to preset input voltage and input current, the motor is powered, detection data of an angle sensor (6), an electronic level meter (5) and a torque sensor (2) are read, and the detection data are sequentially recorded as an included angle theta i Included angle theta j And torque T i ；
S4: according to the included angle theta i Said angle theta j For the torque T i Correcting to obtain the actual torque T f 。
8. The method for detecting an axial torque detecting device of a woodworking motor according to claim 7, wherein in step S1, the transmission efficiency η is i The test method of (2) is as follows: the base (1) is horizontally placed and fixed, and the first connecting shaft (43) is fixedly connected with the torque sensor (2); the output shaft of the standard motor is fixedly connected with a second connecting shaft (45), and the standard motor is tested at different angles theta i The torque T detected by the torque sensor (2) i The method comprises the steps of carrying out a first treatment on the surface of the Will be theta i Torque T when=0 0 As a standard torque, the transmission efficiency eta i The expression is as follows: η (eta) i =T i /T 0 ；
Transmission efficiency eta j The test method of (2) is as follows: the standard motor is arranged on the base (1), and an output shaft of the standard motor is fixedly connected with the torque sensor (2); according to the standard voltage and standard current, the standard motor is powered, the angle of the base (1) is regulated, and the angles theta are recorded at different angles j The torque T detected by the torque sensor (2) j The method comprises the steps of carrying out a first treatment on the surface of the Corresponding torque T when the base (1) is in the horizontal direction 1 As an initial torque, the transmission efficiency η j The expression is as follows: η (eta) j =T j /T 1 。
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Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0357879A2 (en) * | 1988-09-07 | 1990-03-14 | Leopold Weinlich | Device for measuring the torque presented or received by a sample under test |
| JP2006194360A (en) * | 2005-01-14 | 2006-07-27 | Ntn Corp | Constant velocity universal joint device with torque detecting function |
| CN202547844U (en) * | 2012-05-12 | 2012-11-21 | 吉林大学 | Detection device for power flexible transmission torque of test stand of railway vehicle transmission system |
| CN102980698A (en) * | 2011-09-05 | 2013-03-20 | 本田技研工业株式会社 | Magnetic telescopic torque sensor |
| CN103792098A (en) * | 2013-12-13 | 2014-05-14 | 江苏大学 | Comprehensive performance test rig of vehicle electric power steering system |
| CN106482882A (en) * | 2016-10-20 | 2017-03-08 | 浙江工业大学 | A kind of rotary shaft destructive testing method and its device under given moment of torsion |
| KR20170135434A (en) * | 2016-05-31 | 2017-12-08 | 현대위아 주식회사 | Pull-out test apparatus of constant velocity joint assembly |
| CN111452155A (en) * | 2020-06-18 | 2020-07-28 | 常州江苏大学工程技术研究院 | Motor for wood carving |
| DE102019209157A1 (en) * | 2019-06-25 | 2020-12-31 | Zf Friedrichshafen Ag | Cardan shaft arrangement |
| CN113686571A (en) * | 2021-09-27 | 2021-11-23 | 东风汽车集团股份有限公司 | Torque and speed fluctuation testing system and method for steering intermediate shaft |
| CN114354042A (en) * | 2021-12-06 | 2022-04-15 | 烟台杰瑞石油装备技术有限公司 | Torque testing device |
| WO2023058776A1 (en) * | 2021-10-08 | 2023-04-13 | 国際計測器株式会社 | Vehicle wheel test system |
-
2023
- 2023-12-01 CN CN202311636095.1A patent/CN117330222B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0357879A2 (en) * | 1988-09-07 | 1990-03-14 | Leopold Weinlich | Device for measuring the torque presented or received by a sample under test |
| JP2006194360A (en) * | 2005-01-14 | 2006-07-27 | Ntn Corp | Constant velocity universal joint device with torque detecting function |
| CN102980698A (en) * | 2011-09-05 | 2013-03-20 | 本田技研工业株式会社 | Magnetic telescopic torque sensor |
| CN202547844U (en) * | 2012-05-12 | 2012-11-21 | 吉林大学 | Detection device for power flexible transmission torque of test stand of railway vehicle transmission system |
| CN103792098A (en) * | 2013-12-13 | 2014-05-14 | 江苏大学 | Comprehensive performance test rig of vehicle electric power steering system |
| KR20170135434A (en) * | 2016-05-31 | 2017-12-08 | 현대위아 주식회사 | Pull-out test apparatus of constant velocity joint assembly |
| CN106482882A (en) * | 2016-10-20 | 2017-03-08 | 浙江工业大学 | A kind of rotary shaft destructive testing method and its device under given moment of torsion |
| DE102019209157A1 (en) * | 2019-06-25 | 2020-12-31 | Zf Friedrichshafen Ag | Cardan shaft arrangement |
| CN111452155A (en) * | 2020-06-18 | 2020-07-28 | 常州江苏大学工程技术研究院 | Motor for wood carving |
| CN113686571A (en) * | 2021-09-27 | 2021-11-23 | 东风汽车集团股份有限公司 | Torque and speed fluctuation testing system and method for steering intermediate shaft |
| WO2023058776A1 (en) * | 2021-10-08 | 2023-04-13 | 国際計測器株式会社 | Vehicle wheel test system |
| CN114354042A (en) * | 2021-12-06 | 2022-04-15 | 烟台杰瑞石油装备技术有限公司 | Torque testing device |
Non-Patent Citations (1)
| Title |
|---|
| 十字万向节传动轴激励导致的汽车振动噪声研究;赵骞;石月奎;孙悦;;机械传动(10);全文 * |
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