WO2022105452A1 - 花键丝杠测试装置 - Google Patents

花键丝杠测试装置 Download PDF

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Publication number
WO2022105452A1
WO2022105452A1 PCT/CN2021/121587 CN2021121587W WO2022105452A1 WO 2022105452 A1 WO2022105452 A1 WO 2022105452A1 CN 2021121587 W CN2021121587 W CN 2021121587W WO 2022105452 A1 WO2022105452 A1 WO 2022105452A1
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WO
WIPO (PCT)
Prior art keywords
movable
spline
screw
base
mounting seat
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2021/121587
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English (en)
French (fr)
Inventor
徐文才
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
KUKA Robotics Guangdong Co Ltd
Original Assignee
KUKA Robotics Guangdong Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by KUKA Robotics Guangdong Co Ltd filed Critical KUKA Robotics Guangdong Co Ltd
Priority to EP21893602.9A priority Critical patent/EP4249883B1/en
Publication of WO2022105452A1 publication Critical patent/WO2022105452A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • 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
    • G01M13/025—Test-benches with rotational drive means and loading means; Load or drive simulation
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B11/00—Measuring arrangements characterised by the use of optical techniques
    • G01B11/14—Measuring arrangements characterised by the use of optical techniques for measuring distance or clearance between spaced objects or spaced apertures
    • 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

Definitions

  • the present application relates to the technical field of testing devices, and in particular, to a testing device for a spline screw.
  • the purpose of this application is to provide a spline screw testing device, which can test the spline screw and improve the testing efficiency of the spline screw.
  • the present application provides a spline screw test device, the spline screw test device base, a clamping assembly and a first testing mechanism arranged on the base, and the clamping assembly is used for clamping Holding a spline screw, the first testing mechanism includes:
  • a mounting seat movably connected with the base, and the mounting seat can move along the axial direction of the clamped spline screw;
  • a first driving member is fixed on the mounting seat, and the output shaft of the first driving member is connected with the inner ring of the spline nut of the spline screw through a connecting assembly; the first driving member can pass through the connecting assembly applies a force to the inner ring to drive its rotation;
  • a range finder is arranged on the mounting seat, and the range finder is used to detect the rotation amount of the inner ring when a force is applied.
  • the clamping assembly includes a matching fixed clamping piece and a movable clamping piece; the movable clamping piece is movably connected with the base, and the fixed clamping piece and the movable clamping piece are provided with openings. There are clamping through holes.
  • the fixed clamp and the movable clamp include a fixed end and a movable end, the movable end is hinged on the fixed end; the fixed end is provided with a first half hole, and the movable end is The end is provided with a second half hole, and the first half hole and the second half hole are matched to form the clamping through hole.
  • the diameter of the clamping through hole decreases in a stepwise manner along the direction away from the clamped spline screw.
  • test device further includes a position adjustment mechanism, and the position adjustment mechanism includes:
  • a second driving member disposed on the base
  • the first ball screw is arranged on the base, the screw of the first ball screw is fixedly connected with the output shaft of the second driving member, and the nut of the first ball screw is clamped with the movable Fixed connection.
  • a linear guide rail is provided on the base, and the movable clamping member is slidably connected to the linear guide rail through a first jacking assembly, and the first jacking assembly includes:
  • a first movable seat slidably connected with the linear guide rail
  • the first elastic piece is sleeved on the first fixing piece, and both ends of the first elastic piece are respectively abutted with the movable clamping piece and the first movable seat.
  • test device further includes a locking assembly, and the locking assembly includes:
  • the second fixing piece passes through the movable clamping piece and is matched with the strip hole, so as to fix the relative position between the movable clamping piece and the base.
  • test device also includes a second test mechanism, and the second test mechanism includes:
  • a third driving member arranged on the base
  • the second ball screw is arranged on the base, the screw rod of the second ball screw is drivingly connected with the output shaft of the third driving member, and the nut of the second ball screw is fixed with the mounting seat connect;
  • the force sensor is arranged on the mounting seat, and the detection end of the force sensor is connected with the inner ring.
  • a linear guide rail is provided on the base, and the mounting seat is slidably connected to the linear guide rail through a second jacking assembly, and the second jacking assembly includes:
  • a second movable seat slidably connected with the linear guide rail
  • a second elastic piece is sleeved on the second fixing piece, and two ends of the second elastic piece are respectively abutted with the mounting seat and the second movable seat.
  • testing device further includes a third testing mechanism, and the third testing mechanism includes:
  • a push rod arranged on the mounting seat, the push rod is used to push the spline nut of the spline screw to move together when the mounting seat moves;
  • the laser interferometer is arranged opposite to the mirror group.
  • the application at least has the following advantages and positive effects:
  • the present application provides a testing device for a spline screw, the device includes a base, a clamping assembly disposed on the base, and a first testing mechanism, the clamping assembly is used for clamping the spline screw, and the first testing mechanism includes A mounting seat, a first driving member and a range finder, wherein the mounting seat is movably connected with the base, the mounting seat can move along the axial direction of the clamped spline screw, the first driving member is fixed on the mounting seat, the first The output shaft of the driving member is connected with the inner ring of the spline nut of the spline screw through the connecting assembly, the first driving member can apply the force of the rotation of the driver to the inner ring through the connecting assembly, and the distance meter is arranged on the mounting seat, This rangefinder can be used to detect how much the inner ring turns when a force is applied.
  • the rotation clearance and rotational stiffness of the spline nut can be tested by testing the rotation amount of the inner ring of the spline nut of the spline screw when a fixed force is applied through the first testing mechanism.
  • the first testing mechanism ensures the accuracy of the test on the spline screw, thereby ensuring the accuracy of the test result for the spline screw, and at the same time improving the testing efficiency of the spline screw.
  • FIG. 1 is a schematic structural diagram of a spline screw testing device from a first perspective according to an embodiment of the present application.
  • FIG. 2 is a schematic structural diagram of a spline screw testing device from a second perspective according to an embodiment of the present application.
  • FIG. 3 is a schematic structural diagram of a movable clamping member in an embodiment of the present application.
  • FIG. 4 is a schematic view of the assembly of the movable clamping member and the first lifting component in an embodiment of the present application.
  • X-spline screw Y-spline nut; 100-base; 210-fixed clamp; 220-movable clamp; 310-mount; 320-first drive; 330 -Connecting components; 340-Diameter; 221-Clamping through hole; 222-Fixed end; 223-Active end; 410-Second driving part; 420-First ball screw; A movable seat; 620-first fixing part; 710-strip hole; 720-second fixing part; 810-third driving part; 820-second ball screw; 830-force sensor; 910-push rod; 920 - Mirror group; 930 - Laser interferometer.
  • first and second are only used for descriptive purposes, and should not be construed as indicating or implying relative importance or implying the number of indicated technical features. Thus, features defined as “first”, “second” may expressly or implicitly include one or more of said features. In the description of the present application, “plurality” means two or more, unless otherwise expressly and specifically defined.
  • the terms “installed”, “connected” and “connected” should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection connected, or integrally connected. It can be a mechanical connection or an electrical connection. It can be directly connected, or indirectly connected through an intermediate medium, and it can be the internal communication between two elements or the interaction relationship between the two elements.
  • installed should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection connected, or integrally connected. It can be a mechanical connection or an electrical connection. It can be directly connected, or indirectly connected through an intermediate medium, and it can be the internal communication between two elements or the interaction relationship between the two elements.
  • FIG. 1 is a schematic structural diagram of a spline screw testing device in an embodiment of the present application from a first perspective
  • FIG. 2 is a second perspective view of the spline screw testing device in an embodiment of the present application. Schematic.
  • an embodiment of the present application provides a spline screw testing device.
  • the spline screw testing device includes a base 100 , a clamping assembly disposed on the base 100 , and a first testing mechanism.
  • the base 100 is used to carry various types of devices, which can be plate-like structures of various shapes.
  • the base 100 can be a plate-like structure such as a rectangle, a square, a circle, or other polygons, which is not limited in this application.
  • the clamping assembly is disposed on the base 100 and is used for clamping the spline screw X to be tested, so as to realize the stable placement of the spline screw X during testing. To prevent the shaking of the spline screw X during the test, which will affect the test results.
  • the first testing mechanism is disposed on the base 100 , and the first testing mechanism includes a mounting seat 310 , a first driving member 320 and a range finder 340 .
  • the mounting seat 310 is movably connected with the base 100, so that the mounting seat 310 can slide on the base 100. Specifically, the mounting seat 310 can reciprocate along the axial direction of the clamped spline screw X, Therefore, the performance of each position of the spline screw X can be tested, which not only improves the accuracy of the test on the spline screw X, but also improves the application range of the testing device.
  • the first driving member 320 is fixed on the mounting seat 310 , and the output shaft of the first driving member 320 is connected with the inner ring of the spline nut Y of the spline screw X through the connecting assembly 330 , so that the first driving member 320 is A force to drive the rotation of the inner ring can be applied to the inner ring through the connecting assembly 330 .
  • the first driving member 320 may be a servo motor, a driving motor, a pneumatic pump or a hydraulic pump, or the like.
  • the range finder 340 is disposed on the mounting base 310 , and the range finder 340 is used to detect the rotation amount of the inner ring when a force is applied.
  • the range finder 340 may be an infrared range finder 340 or a distance measuring device such as a laser range finder 340 .
  • the distance meter 340 can detect the rotation amount of the inner ring of the spline nut Y when the inner ring of the spline nut Y is exerted by the first driving member 320, so that according to the rotation amount, the first driving member 320
  • the magnitude and torque of the applied force can be calculated to obtain the rotational clearance and rotational stiffness of the spline screw X. It should be noted that the calculation methods of the rotation clearance and the optional stiffness may adopt the existing calculation methods, which are not specially limited in this application.
  • the clamping assembly can be used to clamp the spline screw X to be tested, and the first driving member 320 is connected to the spline nut of the spline screw X.
  • the inner ring of Y exerts a force, and the distance meter 340 can detect the rotation of the inner ring of the spline nut Y of the spline screw X, so as to realize the test of the rotation clearance and rotation stiffness of the spline screw X, ensuring that The accuracy of the test results for the spline screw X.
  • the first testing mechanism can detect the spline screw X. Each position of the key screw X is tested, which further ensures the accuracy and comprehensiveness of the test results.
  • the connecting component 330 includes a first connecting rod, a second connecting rod and a third connecting rod, wherein one end of the first connecting rod is connected to the output shaft of the first driving member 320 Fixed connection, and the axial direction of the first connecting rod is perpendicular to the axial direction of the output shaft of the first driving member 320, the other end of the first connecting rod is hinged with one end of the second connecting rod, and one end of the third connecting rod is The other end of the second connecting rod is hinged, and the other end of the third connecting rod is fixed with the inner ring of the spline nut Y.
  • the third connecting rod and the first connecting rod Before the test, set the third connecting rod and the first connecting rod horizontally, and the axial direction of the third connecting rod points to the center of the inner ring, and at the same time, the second connecting rod is vertically connected to the first connecting rod and the third connecting rod. between the rods. Therefore, when the output shaft of the first driving member 320 drives the first connecting rod to rotate upward, through the transmission of the connecting assembly 330, a vertical upward force of the same magnitude can be applied to the inner ring through the third connecting rod, thereby Conduct spline nut Y rotational stiffness and rotational clearance tests.
  • the first driving member 320 can exert a vertical upward force on both sides of the inner ring through the connecting assembly, and there will be obvious angular deformation when the torque is zero. Therefore, the angular deformation of the inner ring can be calculated under the condition of force on both sides, so as to obtain the rotation clearance of the inner ring.
  • a vertical upward force can also be applied on both sides of the inner ring to obtain the forward rotational stiffness and reverse rotational stiffness of the spline screw.
  • the clamping assembly includes a fixed clamping member 210 and a movable clamping member 220 that are matched.
  • the fixed clamping member 210 is fixed on the base 100
  • the movable clamping member 220 is movably connected with the base 100, so that the movable clamping member 220 can move relative to the fixed clamping member 210 to move away from or close to the fixed clamping member Piece 210.
  • the movable clamping member 220 can reciprocate along the axial direction of the clamped spline screw X, so that the spline screw X of different lengths can be clamped, thereby improving the application range of the testing device.
  • the fixed clamping member 210 and the movable clamping member 220 are provided with clamping through holes 221.
  • both ends of the spline shaft of the spline screw X can be placed on the fixed clamping member 210 and the movable clamp respectively.
  • the clamping through hole 221 on the holder 220 can realize the stable placement of the spline screw X.
  • FIG. 3 is a schematic structural diagram of a movable clamping member according to an embodiment of the present application.
  • both the fixed clamp 210 and the movable clamp 220 include a fixed end 222 and a movable end 223, the movable end 223 is hinged on the fixed end 222, and specifically, the movable end 223 is hinged on the fixed end 223. one side of the end 222 so that the movable end 223 can be turned over relative to the fixed end 222 .
  • the fixed end 222 is provided with a first half hole
  • the movable end 223 is provided with a second half hole, and the first half hole and the second half hole cooperate to form the clamping through hole 221 .
  • the user can first turn over the movable end 223, open the clamping through hole 221, and then place the two ends of the spline shaft of the spline screw X to be detected on the movable clamping member. 220 and the first half hole on the fixed clamping member 210, and finally turn the movable end 223 back, so that the second half hole and the first half hole cooperate to clamp the spline shaft of the spline screw X .
  • a fixing member can be used to fix them to prevent the movable end 223 from rotating relative to the fixed end 222 during testing, so as to ensure the clamping effect of the spline screw X.
  • the fixing member may be a structure such as a bolt, a screw, or a buckle.
  • the diameter of the clamping through hole 221 decreases in a stepwise manner along the direction away from the spline screw X to be clamped. It should be understood that not only the lengths of the spline screws X of different models are different, but also the diameters of the spline shafts. Therefore, the diameter of the clamping through hole 221 is reduced in steps, so that the clamping through hole 221 can be adapted to spline shafts of different diameters, so that spline shafts of different diameters can be clamped, and the clamping is improved. Scope of the component.
  • the aperture size of the clamping through hole 221 can be set in advance according to the different diameters of the spline shaft, and then the different apertures are arranged in a certain order to form a stepped distribution, and the clamping member 210 and the movable clamp can be fixed.
  • the diameters of the clamping through holes 221 on the holder 220 are relatively symmetrical, and decrease in steps in the direction away from each other.
  • the testing device further includes a position adjustment mechanism, and the position adjustment mechanism is used to automatically adjust the relative position between the movable clamp 220 and the fixed clamp 210 .
  • the position adjustment mechanism includes a second driving member 410 and a first ball screw 420. Both the second driving member 410 and the first ball screw 420 are disposed on the base 100, and the screw rod of the first ball screw 420 is connected to the first ball screw 420.
  • the output shafts of the two driving members 410 are fixedly connected, so that the second driving member 410 can drive the screw of the first ball screw 420 to rotate through the output shaft, so that the nut of the first ball screw 420 reciprocates along the axial direction of the screw .
  • the nut of the first ball screw 420 is fixedly connected to the movable clamping member 220, so that when the nut reciprocates, the movable clamping member 220 can be driven to move accordingly, so as to adjust the movable clamping member 220 and the fixed clamping member 210. relative position between.
  • the position of the movable clamping member 220 can be automatically adjusted by the second driving member 410, thus eliminating the trouble of manual adjustment, and the setting of the first ball screw 420 can make the movable clamping member 220 automatically adjusted.
  • the 220 moves smoothly to prevent offsets when moving, affecting the clamping of the spline screw X.
  • a linear guide rail 500 is provided on the base 100 .
  • the linear guide rail 500 can be along the clamped spline screw X axial setting.
  • the movable clamp 220 is slidably connected to the linear guide 500 through the first lifting assembly, so that the movable clamp 220 can slide on the linear guide 500, and the linear guide 500 can guide the movable clamp 220 to ensure The stability of the movable clamp 220 when it is movable.
  • the first jacking assembly includes a first movable seat 610 , a first fixing member 620 and a first elastic member.
  • the first movable seat 610 is slidably connected to the linear guide rail 500 , and the first movable seat 610 can reciprocate along the length direction of the linear guide rail 500 .
  • the first fixing member 620 passes through the movable clamping member 220 and is fixedly connected to the first movable seat 610 to fix the relative position between the movable clamping member 220 and the first movable seat 610, and the movable clamping member 220 can move along the first movable seat 610.
  • the top of the first fixing member 620 is provided with a limiting portion that limits the movable range of the movable clamping member 220 , so as to prevent the movable clamping member 220 from coming out of the first fixing member 620 .
  • the first elastic member is sleeved on the first fixing member 620, and the first elastic member is located between the movable clamping member 220 and the first movable seat 610, and two ends of the first elastic member are respectively connected to the movable clamping member 220 and the first movable seat 610.
  • the first movable seat 610 abuts against each other. Therefore, the first elastic member can apply a vertical upward force to the movable clamping member 220, so that the movable clamping member 220 can be suspended in the air when the movable clamping member 220 reciprocates along the linear guide rail 500 to avoid contact with the base. 100 are in contact, so that the base 100 and the movable clamping member 220 are worn out.
  • the first movable seat 610 may be a guide rail slider matched with the linear guide rail 500, and in other examples, the first movable seat 610 may also be provided on the guide rail slider, so as to facilitate disassembly by technicians. and maintenance.
  • the testing device further includes a locking assembly, the locking assembly is used for fixing the movable clamping member 220 and the movable clamping member 220 without moving the movable clamping member 220 .
  • the relative position between the bases 100 .
  • the locking assembly includes a bar-shaped hole 710 and a second fixing member 720, wherein the bar-shaped hole 710 is opened on the base 100, and the bar-shaped hole 710 is arranged along the axial direction of the first ball screw 420, that is, the bar The longitudinal direction of the shaped hole 710 is parallel to the axial direction of the first ball screw 420 .
  • the second fixing member 720 passes through the movable clamping member 220 and is matched with the strip hole 710 , thereby fixing the relative position between the movable clamping member 220 and the base 100 .
  • the second fixing member 720 passes through the movable clamping member 220 and the bar-shaped hole 710 in sequence, and protrudes from the bottom of the bar-shaped hole 710.
  • the second fixing member 720 can be a bolt. When the second fixing member 720 protrudes When it is located at the bottom of the bar-shaped hole 710 , it can be matched with a nut, so as to achieve the purpose of fixing the movable clamping member 220 .
  • the movable clamping member 220 can be released by rotating the nut matched with the second fixing member 720, so that the movable clamping member 220 can move along the linear guide rail 500. Reciprocating motion.
  • the second fixing member 720 can drive the movable clamping member 220 to move downward by rotating the nut until it abuts with the base 100 , thereby The purpose of fixing the movable clamp 220 is achieved.
  • the movable clamping member 220 can be fixed when necessary, and at the same time, the arrangement of the strip holes 710 can not affect the reciprocating movement of the movable clamping member 220 along the linear guide rail 500, so as to facilitate the adjustment of the movable clamping member 220. Location.
  • the testing device further includes a second testing mechanism, the second testing mechanism is used to test the bearing of the spline nut Y when it performs linear motion relative to the spline shaft the size of the resistance.
  • the second testing mechanism includes a third driving member 810 , a second ball screw 820 and a force sensor 830 .
  • the third driving member 810 and the second ball screw 820 are both disposed on the base 100 , the screw of the second ball screw 820 is drivingly connected to the output shaft of the third drive, and the nut of the second ball screw 820 is connected to the mounting seat 310 fixed connection.
  • the third driving member 810 drives the screw of the second ball screw 820 to rotate
  • the nut of the second ball screw 820 can drive the mounting seat 310 to move linearly along the axial direction of the screw of the second ball screw 820 .
  • the force sensor 830 is disposed on the mounting seat 310, and the detection end of the force sensor 830 is connected with the inner ring of the spline nut Y. Therefore, when the mounting seat 310 moves in a straight line, the detection end of the force sensor 830 can push the spline nut Y to move in a straight line on the spline shaft, and the force sensor 830 can measure the force that the spline nut Y bears during the movement. the size of the resistance.
  • the third driving member 810 can push the spline nut Y to move at different speeds, so as to measure the force under different speeds, thereby ensuring the accuracy of the test.
  • the mounting seat 310 may be slidably connected to the linear guide rail 500 provided on the base 100 through the second jacking assembly.
  • the second jacking assembly includes a second movable seat, a second fixing member 720 and a second elastic member.
  • the second movable seat is slidably connected to the linear guide rail 500
  • the second fixing member 720 is fixedly connected to the second movable seat through the mounting seat 310 , thereby fixing the relative position between the mounting seat 310 and the second movable seat.
  • the mounting seat 310 can move up and down along the axial direction of the second fixing member 720 .
  • the top of the second fixing member 720 is provided with a limiting portion that limits the movement range of the mounting seat 310 , so as to prevent the mounting seat 310 from coming out of the second fixing member 720 .
  • the second elastic member is sleeved on the second fixing member 720, the second elastic member is located between the mounting seat 310 and the second movable seat, and two ends of the second elastic member are respectively abutted against the mounting seat 310 and the second movable seat catch. Therefore, the second elastic member can exert an upward force on the mounting seat 310 to lift off the mounting seat 310, so as to prevent the mounting seat 310 from contacting the base 100 when moving along the linear guide rail 500, thereby causing both wear and tear. In this way, the service life of the mounting seat 310 can be prolonged, and the maintenance cost can be reduced.
  • the mounting seat 310 may also be provided with the locking assembly described in the above embodiment, so that when the mounting seat 310 needs to be fixed, the locking assembly is used to fix the connection between the mounting seat 310 and the base 100 relative position between.
  • the same strip hole 710 can be shared between the two locking assemblies, so no redundant processing is required, and processing steps are saved.
  • the inner ring of the spline nut Y may be provided with a push-pull portion extending outward, and when the second testing mechanism is in operation, the detection end of the force sensor 830 may be fixed with the push-pull portion, so as to facilitate the At the same time, it can ensure that the force-bearing direction of the detection end of the force sensor 830 is parallel to the movement direction of the spline nut Y, so as to ensure the detection accuracy of the force sensor 830 .
  • the push-pull portion may be formed by the outward extension of one end of the connecting component 330 connected to the inner ring.
  • the push-pull part is provided with a strip-shaped through hole
  • the detection end of the force sensor 830 can pass through the strip-shaped through hole
  • the detection end of the force sensor 830 is provided with two limit parts, the two limit The parts are arranged on both sides of the strip-shaped through-hole to prevent the detection end from coming out of the strip-shaped through-hole. Therefore, when the force sensor 830 performs detection, the push-pull portion can be pushed and pulled through the setting of the limiting portion, so as to detect the magnitude of the resistance received by the spline nut during movement.
  • the distance meter 340 can measure the rotation of the spline screw X under the driving of the first driving member 320 by detecting the rotation of the push-pull portion, so as to obtain the rotation of the spline nut Y. Rotational clearance and rotational stiffness to ensure the accuracy of test results.
  • the testing device further includes a third testing mechanism, and the third testing mechanism is used to detect the running straight line of the spline nut Y when it moves linearly on the spline shaft. Degree, that is, the amount of offset in the horizontal direction and the vertical direction when the spline nut Y is in linear motion.
  • the third testing mechanism includes a push rod 910 , a mirror group 920 and a laser interferometer 930 .
  • the push rod 910 is disposed on the mounting seat 310 to push the spline when the mounting seat 310 moves along the linear guide 500 .
  • the spline nut Y of the screw X moves together, so that the spline nut Y moves linearly relative to the spline shaft.
  • the mirror group 920 is fixedly connected to the inner ring of the spline nut Y to follow the spline nut Y to move.
  • the laser interferometer 930 is disposed opposite to the mirror group 920 . In this way, the running straightness of the spline nut Y can be measured by the movement of the laser light emitted by the laser interferometer 930 on the mirror group 920 .
  • testing functions are integrated, and the structures between the testing organizations can cooperate with each other, which not only satisfies the testing requirements, but also improves the accuracy of testing.
  • the test efficiency of the spline screw while reducing the labor cost and economic cost of the test.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
  • Transmission Devices (AREA)

Abstract

一种花键丝杠测试装置，其中，包括底座(100)以及设置于底座(100)上的夹持组件和第一测试机构，夹持组件用于夹持花键丝杠(X)，第一测试机构包括安装座(310)、第一驱动件(320)和测距仪(340)，安装座(310)与底座(100)活动连接，安装座(310)可沿被夹持的花键丝杠(X)的轴向运动；第一驱动件(320)固定于安装座(310)上，第一驱动件(320)的输出轴通过连接组件(330)与花键丝杠(X)的花键螺母(Y)的内圈相连接；第一驱动件(320)可通过连接组件(330)向内圈施加驱动其转动的作用力；测距仪(340)设置于安装座(310)上，测距仪(340)用于检测内圈在被施加作用力时的转动量。花键丝杠测试装置能够对花键丝杠(X)进行自动测试，以保证花键丝杠(X)在实际使用中的性能表现。

Description

花键丝杠测试装置
本申请要求于2020年11月17日递交、发明名称为“花键丝杠测试装置”的中国专利申请202011285896.4的优先权，在此通过引用将其全部内容合并于此。
技术领域
本申请涉及测试装置技术领域，特别涉及一种花键丝杠测试装置。
背景技术
随着工业4.0的快速发展，工业自动化领域对工业机器人的需求量越来越大，同时对其性能参数也提出了越来越高的要求。由此，作为工业机器人的核心部件之一的花键丝杠，其性能要求也随之提高。因此，如何对花键丝杠进行测试，以保证花键丝杠在实际使用中的性能表现成为了亟待解决的技术问题。
技术解决方案
本申请的目的在于提供一种花键丝杠测试装置，以能够对花键丝杠进行测试，提高花键丝杠的测试效率。
为解决上述技术问题，本申请提供一种花键丝杠测试装置，该花键丝杠测试装置底座以及设置于所述底座上的夹持组件和第一测试机构，所述夹持组件用于夹持花键丝杠，所述第一测试机构包括：
安装座，与所述底座活动连接，所述安装座可沿被夹持的花键丝杠的轴向运动；
第一驱动件，固定于所述安装座上，所述第一驱动件的输出轴通过连接组件与所述花键丝杠的花键螺母的内圈相连接；所述第一驱动件可通过所述连接组件向所述内圈施加驱动其转动的作用力；
测距仪，设置于所述安装座上，所述测距仪用于检测所述内圈在被施加作用力时的转动量。
进一步地，所述夹持组件包括相配合的固定夹持件和活动夹持件；所述活动夹持件与所述底座活动连接，所述固定夹持件和所述活动夹持件上开设有夹持通孔。
进一步地，所述固定夹持件和所述活动夹持件包括固定端和活动端，所述活动端铰接于所述固定端上；所述固定端上开设有第一半孔，所述活动端上开设有第二半孔，所述第一半孔和所述第二半孔相配合以形成所述夹持通孔。
进一步地，所述夹持通孔的孔径沿远离被夹持的花键丝杠的方向呈阶梯状减小。
进一步地，所述测试装置还包括位置调节机构，所述位置调节机构包括：
第二驱动件，设置于所述底座上；
第一滚珠丝杠，设置于所述底座上，所述第一滚珠丝杠的螺杆与所述第二驱动件的输出轴固定连接，所述第一滚珠丝杠的螺母与所述活动夹持件固定连接。
进一步地，所述底座上设置有直线导轨，所述活动夹持件通过第一顶升组件与所述直线导轨滑动连接，所述第一顶升组件包括：
第一活动座，与所述直线导轨滑动连接；
第一固定件，其穿过所述活动夹持件与所述第一活动座固定连接；
第一弹性件，套设于所述第一固定件上，且所述第一弹性件的两端分别与所述活动夹持件和所述第一活动座相抵接。
进一步地，所述测试装置还包括锁紧组件，所述锁紧组件包括：
条形孔，开设于所述底座上，且所述条形孔沿所述第一滚珠丝杠的轴向设置；
第二固定件，其穿过所述活动夹持件与所述条形孔相配合，以固定所述活动夹持件与所述底座之间的相对位置。
进一步地所述测试装置还包括第二测试机构，所述第二测试机构包括：
第三驱动件，设置于所述底座上；
第二滚珠丝杠，设置于所述底座上，所述第二滚珠丝杠的螺杆与所述第三驱动件的输出轴驱动连接，所述第二滚珠丝杠的螺母与所述安装座固定连接；
力传感器，设置于所述安装座上，所述力传感器的检测端与所述内圈相连接。
进一步地，所述底座上设置有直线导轨，所述安装座通过第二顶升组件与所述直线导轨滑动连接，所述第二顶升组件包括：
第二活动座，与所述直线导轨滑动连接；
第二固定件，其穿过所述安装座与所述第二活动座固定连接；
第二弹性件，套设于所述第二固定件上，且所述第二弹性件的两端分别与所述安装座和所述第二活动座相抵接。
进一步地，所述测试装置还包括第三测试机构，所述第三测试机构包括：
推杆，设置于所述安装座上，所述推杆用于在所述安装座运动时，推动所述花键丝杠的花键螺母一同运动；
反射镜组，其固定连接于所述花键丝杠的花键螺母的内圈上；
激光干涉仪，与所述反射镜组相对设置。
由上述技术方案可知，本申请至少具有如下优点和积极效果：
本申请提供了一种花键丝杠的测试装置，该装置包括底座以及设置于底座上的夹持组件和第一测试机构，该夹持组件用于夹持花键丝杠，第一测试机构包括安装座、第一驱动件以及测距仪，其中，安装座与底座活动连接，安装座可沿被夹持的花键丝杠的轴向运动，第一驱动件固定于安装座上，第一驱动件的输出轴通过连接组件与花键丝杠的花键螺母的内圈相连接，第一驱动件可通过连接组件向内圈施加驱动器转动的作用力，测距仪设置于安装座上，该测距仪可用于检测内圈在被施加作用力时的转动量。由此，通过该第一测试机构通过测试花键丝杠的花键螺母的内圈在被施加固定作用力时的转动量，即可实现对花键螺母的旋转间隙以及旋转刚度测试，相比较于人工检测，该第一测试机构保证了对花键丝杠的测试的精确性，进而保证了对花键丝杠的测试结果的准确性，同时也提高了对花键丝杠的测试效率。
附图说明
图1是本申请一实施例中花键丝杠测试装置的第一视角的结构示意图。
图2是本申请一实施例中花键丝杠测试装置的第二视角的结构示意图。
图3是本申请一实施例中活动夹持件的结构示意图。
图4时本申请一实施例中活动夹持件与第一顶升组件的装配示意图。
附图标记说明如下：X-花键丝杠；Y-花键螺母；100-底座；210-固定夹持件；220-活动夹持件；310-安装座；320-第一驱动件；330-连接组件；340-测距仪；221-夹持通孔；222-固定端；223-活动端；410-第二驱动件；420-第一滚珠丝杠；500-直线导轨；610-第一活动座；620-第一固定件；710-条形孔；720-第二固定件；810-第三驱动件；820-第二滚珠丝杠；830-力传感器；910-推杆；920-反射镜组；930-激光干涉仪。
具体实施方式
体现本申请特征与优点的典型实施方式将在以下的说明中详细叙述。应理解的是本申请能够在不同的实施方式上具有各种的变化，其皆不脱离本申请的范围，且其中的说明及图示在本质上是当作说明之用，而非用以限制本申请。
在本申请的描述中，需要理解的是，术语“中心”、“纵向”、“横向”、“长度”、“宽度”、“厚度”、“上”、“下”、“前”、“后”、“左”、“右”、“竖直”、“水平”、“顶”、“底”、 “内”、“外”、“顺时针”、“逆时针”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本申请和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本申请的限制。此外，术语“第一”、“第二”仅用于描述目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括一个或者更多个所述特征。在本申请的描述中，“多个”的含义是两个或两个以上，除非另有明确具体的限定。
在本申请的描述中，需要说明的是，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或一体地连接。可以是机械连接，也可以是电连接。可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通或两个元件的相互作用关系。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本申请中的具体含义。
参照图1和图2，图1是本申请一实施例中花键丝杠测试装置的第一视角的结构示意图，图2是本申请一实施例中花键丝杠测试装置的第二视角的结构示意图。
如图1和图2所示，本申请实施例提供一种花键丝杠测试装置，该花键丝杠测试装置包括底座100以及设置于底座100上的夹持组件和第一测试机构。
其中，底座100用以承载各类器件，其可以是各种形状的板状结构，例如该底座100可以是长方形、正方形、圆形或者其他多边形等板状结构，本申请对此不做限定。
夹持组件设置于底座100上，其用于夹持待检测的花键丝杠X，从而实现花键丝杠X在进行测试时的稳定放置。防止因为花键丝杠X在测试时的晃动，从而影响对其的测试结果。
第一测试机构设置于底座100上，且该第一测试机构包括安装座310、第一驱动件320以及测距仪340。其中，安装座310与底座100活动连接，以使安装座310能够在底座100上进行滑动，具体地，该安装座310能够沿着被夹持的花键丝杠X的轴向进行往复运动，从而使得能够对花键丝杠X各位置的性能进行测试，不仅提高了对花键丝杠X的测试的准确性同时也提高了测试装置的适用范围。
第一驱动件320固定于安装座310上，该第一驱动件320的输出轴通过连接组件330与花键丝杠X的花键螺母Y的内圈相连接，以使得该第一驱动件320可通过连接组件330向该内圈施加驱动其转动的作用力。可选的，该第一驱动件320可以是伺服电机、驱动电机、气压泵或者液压泵等。
测距仪340设置于安装座310上，该测距仪340用于检测内圈在被施加作用力时的转动量。具体地，该测距仪340可以是红外测距仪340也可以是激光测距仪340等测距装置。该测距仪340可以在花键螺母Y的内圈在被第一驱动件320施加作用力时，检测花键螺母Y的内圈的转动量，从而可以根据该转动量、第一驱动件320施加的作用力的大小以及力矩，计算得到花键丝杠X的旋转间隙以及旋转刚度。需要说明的，旋转间隙以及选装刚度的计算方式可采用现有的计算方式，本申请对此不做特殊限定。
由此，第一测试机构在对花键丝杠X进行测试时，可以采用夹持组件对待检测的花键丝杠X进行夹持，第一驱动件320向花键丝杠X的花键螺母Y的内圈施加作用力，测距仪340则可以检测花键丝杠X的花键螺母Y的内圈的转动量，从而实现对花键丝杠X的旋转间隙以及旋转刚度的测试，保证了对花键丝杠X的测试结果的准确性。同时，由于第一驱动件320以及测距仪340设置于安装座310上，且安装座310可沿着被夹持的花键丝杠X的轴向往复运动，则第一测试机构可以对花键丝杠X的各个位置进行测试，进一步的保证了测试结果的准确性和全面性。
请参考图1，在本申请的一个实施例中，连接组件330包括第一连杆、第二连杆以及第三连杆，其中，第一连杆的一端与第一驱动件320的输出轴固定连接，且第一连杆的轴向与第一驱动件320的输出轴的轴向相垂直，第一连杆的另一端与第二连杆的一端相铰接，第三连杆的一端与第二连杆的另一端相铰接，第三连杆的另一端则与花键螺母Y的内圈相固定。
在测试之前，将第三连杆和第一连杆水平设置，且第三连杆的轴向指向内圈的圆心位置，同时，第二连杆竖直连接于第一连杆和第三连杆之间。由此，当第一驱动件320的输出轴驱动第一连杆向上转动时，通过连接组件330的传动，则可以通过第三连杆向内圈施加同样大小的竖直向上的作用力，从而进行花键螺母Y旋转刚度以及旋转间隙的测试。
在测试时，第一驱动件320可以通过连接组件在内圈的两侧施加竖直向上的作用力，而当扭矩为零时会存在明显的角度变形。因此，可以计算内圈在两侧受力的情况下的角度变形，从而得到内圈的旋转间隙。同样的，在计算花键丝杠的旋转刚度时，也可以在内圈的两侧施加竖直向上的作用力，从而得到花键丝杠的正向旋转刚度和反向旋转刚度。
由于同样是竖直向上的作用力因此可以保证第一驱动件320所输出的力与内圈所受到的力相同，避免内圈因受力方向不同造成测试结果错误的情况发生，保证了测试结果的准确性。
请参照图1和图2，在本申请的一个实施例中，夹持组件包括相配合的固定夹持件210 和活动夹持件220。其中，固定夹持件210固定于该底座100上，活动夹持件220则与底座100活动连接，以使得活动夹持件220可相对于固定夹持件210活动，以远离或者靠近固定夹持件210。具体地，活动夹持件220可沿被夹持的花键丝杠X的轴向进行往复运动，从而可以对不同长度的花键丝杠X进行夹持，从而提高测试装置的适用范围。
固定夹持件210与活动夹持件220上开设有夹持通孔221，在实际使用过程中，花键丝杠X的花键轴的两端能够分别放置在固定夹持件210与活动夹持件220上的夹持通孔221上，从而实现花键丝杠X的稳定放置。
请参考图3，图3是本申请一实施例中活动夹持件的结构示意图。在本申请的一个实施例中，固定夹持件210和活动夹持件220均包括固定端222和活动端223，该活动端223铰接于固定端222上，具体地，活动端223铰接于固定端222的一侧，以使活动端223能够相对于固定端222进行翻转。同时，固定端222上开设有第一半孔、活动端223上开设有第二半孔，该第一半孔和第二半孔相配合以形成夹持通孔221。
由此，在实际使用过程中，用户可先将活动端223进行翻转，打开夹持通孔221，再将待检测的花键丝杠X的花键轴的两端分别放置在活动夹持件220和固定夹持件210上的第一半孔中，最后再将活动端223翻转回来，以使第二半孔与第一半孔相配合对花键丝杠X的花键轴进行夹持。
可选的，活动端223与固定端222闭合时可采用固定件对二者进行固定，防止活动端223在测试时相对固定端222发生转动，以保证对花键丝杠X的夹持效果。具体地，该固定件可以是螺栓、螺丝或者卡扣等结构。
在本申请的一个实施例中，所述夹持通孔221的孔径沿远离被夹持的花键丝杠X的方向呈阶梯状减小。应该理解的，不同型号的花键丝杠X不仅长度不同，花键轴的直径也并不相同。因此，夹持通孔221的孔径呈阶梯状减小，则可以使得该夹持通孔221能够适应不同直径的花键轴，从而能够对不同直径的花键轴进行夹持，提升了夹持组件的适用范围。
需要说明的，可以预先根据花键轴的不同直径，设置夹持通孔221的孔径大小，再将不同孔径按照一定的顺序进行排列，以形成阶梯状的分布，固定夹持件210和活动夹持件220上的夹持通孔221的孔径相对称，且沿远离对方的方向呈阶梯状减小。
请参照图1和图2，在本申请的一个实施例中，测试装置还包括位置调节机构，该位置调节机构用以自动调节活动夹持件220与固定夹持件210之间的相对位置。具体地，位置调节机构包括第二驱动件410和第一滚珠丝杠420，第二驱动件410和第一滚珠丝杠420均设置于底座100上，且第一滚珠丝杠420的螺杆与第二驱动件410的输出轴固定连接， 以使第二驱动件410可以通过输出轴驱动第一滚珠丝杠420的螺杆转动，从而使第一滚珠丝杠420的螺母沿螺杆的轴向作往复运动。同时，第一滚珠丝杠420的螺母与活动夹持件220固定连接，以在螺母作往复运动时，能够带动活动夹持件220相应运动，从而调整活动夹持件220和固定夹持件210之间的相对位置。
由此，通过位置调节机构的设置，可以通过第二驱动件410自动调节活动夹持件220的位置，免去了人工调节的麻烦，且第一滚珠丝杠420的设置能够使活动夹持件220平稳移动，防止在移动时出现偏移，影响花键丝杠X的夹持。
请参考图1、图2、图3和图4，在本申请的一个实施例中，底座100上设置有直线导轨500，具体地，该直线导轨500可以沿被夹持的花键丝杠X的轴向设置。活动夹持件220通过第一顶升组件与直线导轨500滑动连接，以使活动夹持件220可在直线导轨500上进行滑动，直线导轨500可对该活动夹持件220进行导向，以保证活动夹持件220在活动时的稳定性。
具体地，第一顶升组件包括第一活动座610、第一固定件620以及第一弹性件。其中，第一活动座610与直线导轨500滑动连接，该第一活动座610可沿直线导轨500的长度方向往复运动。第一固定件620穿过活动夹持件220与第一活动座610固定连接，以固定活动夹持件220与第一活动座610之间的相对位置，且活动夹持件220可沿第一固定件620的轴向上下移动，该第一固定件620的顶部设置有限制活动夹持件220的活动范围的限位部，以防止活动夹持件220从第一固定件620上脱出。
第一弹性件套设于第一固定件620上，且第一弹性件位于活动夹持件220与第一活动座610之间，并且第一弹性件的两端分别与活动夹持件220和第一活动座610相抵接。由此，第一弹性件可向活动夹持件220施加竖直向上的作用力，以使活动夹持件220在沿着直线导轨500往复运动时能够使活动夹持件220悬空，避免与底座100相接触，从而造成底座100和活动夹持件220出现磨损的情况发生。降低了维修成本，同时也延长了活动夹持件220的使用寿命。在一示例中，第一活动座610可以为与直线导轨500相配合的导轨滑块，在其他示例中，第一活动座610也可以是设置于导轨滑块上，以便于技术人员对其拆卸和维修。
请参考图1、图2和图3，在本申请的一个实施例中，测试装置还包括锁紧组件，该锁紧组件用于无需移动活动夹持件220时，固定活动夹持件220与底座100之间的相对位置。具体地，该锁紧组件包括条形孔710以及第二固定件720，其中，条形孔710开设于底座100上，且条形孔710沿第一滚珠丝杠420的轴向设置，即条形孔710的长度方向与 第一滚珠丝杠420的轴向相平行。
第二固定件720穿过活动夹持件220且与条形孔710相配合，从而固定活动夹持件220与底座100之间的相对位置。具体地，第二固定件720依次穿过活动夹持件220和条形孔710，并凸出于条形孔710的底部，该第二固定件720可以是螺栓，当第二固定件720凸出于条形孔710的底部时，可与螺母相配合，从而达到固定活动夹持件220的目的。
在实际使用中，若需移动活动夹持件220，则可以通过转动与第二固定件720相配合的螺母，从而释放活动夹持件220，以使活动夹持件220可沿直线导轨500作往复运动。而需要固定活动夹持件220时，则可以在活动夹持件220到达目标位置后，通过转动螺母，使第二固定件720带动活动夹持件220向下运动直至与底座100相抵接，从而达到固定活动夹持件220的目的。
由此，既实现了在需要时可以固定活动夹持件220，同时条形孔710的设置也能够不影响活动夹持件220沿直线导轨500的往复运动，以便于调整活动夹持件220的位置。
请参考图1和图2，在本申请的一个实施例中，测试装置还包括第二测试机构，该第二测试机构用以测试花键螺母Y在相对于花键轴进行直线运动时所承受的阻力的大小。具体地，该第二测试机构包括第三驱动件810、第二滚珠丝杠820以及力传感器830。第三驱动件810和第二滚珠丝杠820均设置于底座100上，第二滚珠丝杠820的螺杆与第三驱动间的输出轴驱动连接，该第二滚珠丝杠820的螺母与安装座310固定连接。
由此，当第三驱动件810驱动第二滚珠丝杠820的螺杆进行转动时，第二滚珠丝杠820的螺母能够带动安装座310沿第二滚珠丝杠820的螺杆的轴向作直线运动。同时，力传感器830设置于安装座310上，且力传感器830的检测端与花键螺母Y的内圈相连接。所以，在安装座310沿作直线运动时，力传感器830的检测端能够推动花键螺母Y在花键轴上作直线运动，则力传感器830能够测得花键螺母Y在运动时所承受的阻力的大小。且第三驱动件810可以不同的速度推动花键螺母Y进行运动，以测得在不同速度下的受力情况，进而保证了测试的准确性。
在本申请的一个实施例中，安装座310可以通过第二顶升组件与设置在底座100上的直线导轨500滑动连接。该第二顶升组件包括第二活动座、第二固定件720以及第二弹性件。具体地，该第二活动座与直线导轨500滑动连接，第二固定件720穿过安装座310与第二活动座固定连接，从而固定安装座310与第二活动座之间的相对位置。同时，安装座310可沿第二固定件720的轴向上下移动。第二固定件720的顶部设置有限制安装座310的移动范围的限位部，以防止安装座310从第二固定件720上脱出。
第二弹性件套设于第二固定件720上，该第二弹性件位于安装座310与第二活动座之间，且第二弹性件的两端分别与安装座310与第二活动座相抵接。由此，第二弹性件能够向安装座310施加向上的作用力，从而抬离安装座310，避免安装座310在沿着直线导轨500移动时，与底座100相接触从而造成二者的磨损，以此可以延长安装座310的使用寿命，降低了维修成本。
在本申请的一个实施例中，安装座310上也可以设置有上述实施例所述的锁紧组件，从而在需要对安装座310进行固定时，通过锁紧组件固定安装座310与底座100之间的相对位置。且两个锁紧组件之间可以共用同一条形孔710，无需多余加工，节省了加工步骤。具体安装方式参照上述实施例，本申请在此不再赘述。
在一示例中，花键螺母Y的内圈上可设置有向外延伸的推拉部，在第二测试机构工作时，力传感器830的检测端可与推拉部相固定，以便于力传感器830的安装，同时能够保证力传感器830的检测端的受力方向与花键螺母Y的运动方向相平行，以保证力传感器830的检测的准确性。优选的，该推拉部可以是由连接组件330与内圈连接的一端向外延伸而生成。
在一示例中，推拉部上开设有条形通孔，力传感器830的检测端可以穿过该条形通孔，且力传感器830的检测端上设置有两个限位部，两个限位部设置于条形通孔的两侧，以防止检测端从该条形通孔中脱出。由此，在力传感器830进行检测时，通过限位部的设置，可以对推拉部进行推和拉的动作，从而检测花键螺母在运动时所受到的阻力大小。
而在第一测试机构工作时，测距仪340可通过检测推拉部的转动量，从而测得花键丝杠X在第一驱动件320的驱动下的转动量，以得到花键螺母Y的旋转间隙和旋转刚度，以保证测试结果的准确性。
请参考图1和图2，在本申请的一个实施例中，测试装置还包括第三测试机构，该第三测试机构用于检测花键螺母Y在花键轴上作直线运动时的行走直线度，即检测花键螺母Y在作直线运动时水平方向上以及竖直方向上的偏移量大小。
具体地，该第三测试机构包括推杆910、反射镜组920以及激光干涉仪930，该推杆910设置于安装座310上，以在安装座310沿着直线导轨500运动时，推动花键丝杠X的花键螺母Y一同运动，从而使花键螺母Y相对于花键轴作直线运动。
反射镜组920固定连接于花键螺母Y的内圈上，以跟随花键螺母Y进行运动。激光干涉仪930则与反射镜组920相对设置。由此，可以通过激光干涉仪930所射出的激光在反射镜组920上的移动情况，测得花键螺母Y的行走直线度。
由此，通过第一测试机构、第二测试机构以及第三测试机构的设置，将多种测试功能进行集成，且各测试机构之间的结构能够相互配合，既满足了测试需求，提高了对花键丝杠的测试效率，同时降低了测试的人工成本和经济成本。
虽然已参照几个典型实施方式描述了本申请，但应当理解，所用的术语是说明和示例性、而非限制性的术语。由于本申请能够以多种形式具体实施而不脱离本申请的精神或实质，所以应当理解，上述实施方式不限于任何前述的细节，而应在随附权利要求所限定的精神和范围内广泛地解释，因此落入权利要求或其等效范围内的全部变化和改型都应为随附权利要求所涵盖。

Claims (10)

  1. 一种花键丝杠测试装置，其中，包括底座以及设置于所述底座上的夹持组件和第一测试机构，所述夹持组件用于夹持花键丝杠，所述第一测试机构包括：
    安装座，与所述底座活动连接，所述安装座可沿被夹持的花键丝杠的轴向运动；
    第一驱动件，固定于所述安装座上，所述第一驱动件的输出轴通过连接组件与所述花键丝杠的花键螺母的内圈相连接；所述第一驱动件可通过所述连接组件向所述内圈施加驱动其转动的作用力；
    测距仪，设置于所述安装座上，所述测距仪用于检测所述内圈在被施加作用力时的转动量。
  2. 根据权利要求1所述的测试装置，其中，所述夹持组件包括相配合的固定夹持件和活动夹持件；所述活动夹持件与所述底座活动连接，所述固定夹持件和所述活动夹持件上开设有夹持通孔。
  3. 根据权利要求2所述的测试装置，其中，所述固定夹持件和所述活动夹持件包括固定端和活动端，所述活动端铰接于所述固定端上；所述固定端上开设有第一半孔，所述活动端上开设有第二半孔，所述第一半孔和所述第二半孔相配合以形成所述夹持通孔。
  4. 根据权利要求2所述的测试装置，其中，所述夹持通孔的孔径沿远离被夹持的花键丝杠的方向呈阶梯状减小。
  5. 根据权利要求2所述的测试装置，其中，所述测试装置还包括位置调节机构，所述位置调节机构包括：
    第二驱动件，设置于所述底座上；
    第一滚珠丝杠，设置于所述底座上，所述第一滚珠丝杠的螺杆与所述第二驱动件的输出轴固定连接，所述第一滚珠丝杠的螺母与所述活动夹持件固定连接。
  6. 根据权利要求5所述的测试装置，其中，所述底座上设置有直线导轨，所述活动夹持件通过第一顶升组件与所述直线导轨滑动连接，所述第一顶升组件包括：
    第一活动座，与所述直线导轨滑动连接；
    第一固定件，其穿过所述活动夹持件与所述第一活动座固定连接；
    第一弹性件，套设于所述第一固定件上，且所述第一弹性件的两端分别与所述活动夹持件和所述第一活动座相抵接。
  7. 根据权利要求5所述的测试装置，其中，所述测试装置还包括锁紧组件，所述锁紧组件包括：
    条形孔，开设于所述底座上，且所述条形孔沿所述第一滚珠丝杠的轴向设置；
    第二固定件，其穿过所述活动夹持件与所述条形孔相配合，以固定所述活动夹持件与所述底座之间的相对位置。
  8. 根据权利要求1所述的测试装置，其中，所述测试装置还包括第二测试机构，所述第二测试机构包括：
    第三驱动件，设置于所述底座上；
    第二滚珠丝杠，设置于所述底座上，所述第二滚珠丝杠的螺杆与所述第三驱动件的输出轴驱动连接，所述第二滚珠丝杠的螺母与所述安装座固定连接；
    力传感器，设置于所述安装座上，所述力传感器的检测端与所述内圈相连接。
  9. 根据权利要求8所述的测试装置，其中，所述底座上设置有直线导轨，所述安装座通过第二顶升组件与所述直线导轨滑动连接，所述第二顶升组件包括：
    第二活动座，与所述直线导轨滑动连接；
    第二固定件，其穿过所述安装座与所述第二活动座固定连接；
    第二弹性件，套设于所述第二固定件上，且所述第二弹性件的两端分别与所述安装座和所述第二活动座相抵接。
  10. 根据权利要求1所述的测试装置，其中，所述测试装置还包括第三测试机构，所述第三测试机构包括：
    推杆，设置于所述安装座上，所述推杆用于在所述安装座运动时，推动所述花键丝杠的花键螺母一同运动；
    反射镜组，其固定连接于所述花键丝杠的花键螺母的内圈上；
    激光干涉仪，与所述反射镜组相对设置。
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