WO2013026228A1 - 球面-回转面结合面接触刚度测试装置及方法 - Google Patents
球面-回转面结合面接触刚度测试装置及方法 Download PDFInfo
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- WO2013026228A1 WO2013026228A1 PCT/CN2011/081105 CN2011081105W WO2013026228A1 WO 2013026228 A1 WO2013026228 A1 WO 2013026228A1 CN 2011081105 W CN2011081105 W CN 2011081105W WO 2013026228 A1 WO2013026228 A1 WO 2013026228A1
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- spherical
- test piece
- test
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- sleeve
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
- G01M13/04—Bearings
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N19/00—Investigating materials by mechanical methods
- G01N19/02—Measuring coefficient of friction between materials
Definitions
- the invention belongs to the technical field of joint surface testing of mechanical structures, and relates to typical spherical and conical surfaces, spherical surfaces and ball sockets, spherical surfaces and planes, spherical and straight channels, spherical surfaces and annular inner channels, spherical surfaces and annular shapes.
- the joint surface stiffness test of the spherical surface and the rotating surface of the channel in particular, relates to a spherical-rotation surface joint surface contact stiffness testing device, and to a method for testing the contact stiffness of the spherical-rotation surface joint surface by using the device.
- Typical rotary surfaces in mechanical structures are spherical (double-degree-of-freedom rotary surface, outer spherical surface), ball-and-socket (inner spherical surface), plane (single-degree-of-freedom rotary surface with infinite radius), and conical surface (straight busbar and rotary axis are constant
- An angled and coplanar single-degree-of-freedom surface a straight channel (inner cylindrical surface, a single-degree-of-freedom surface parallel to the axis of rotation), and an annular channel surface (the arc bus is coplanar with the axis of rotation)
- the single-degree-of-freedom rotary surface is further divided into a circular inner channel rotating surface and a circular outer channel rotating surface).
- the joint surface composed of the spherical surface of the sphere and the rotating surface of the rotating body is called a spherical-rotating surface joint surface.
- the main types include: spherical-conical surface joint surface, spherical surface-ball joint surface, spherical-plane joint surface, spherical surface - Straight channel joint surface, spherical surface - annular inner channel joint surface, spherical surface - annular outer channel joint surface.
- the contact stiffness of the spherical-rotation surface joint surface is generally obtained by an analytical method based on the basic test data.
- the reliability of the analytical method and the analytical result must be verified by the test, but the spherical-rotation surface joint surface exists in the test system, especially It is difficult to directly detect the displacement of the sphere, so if the contact stiffness of the spherical-rotation surface joint obtained by the test method is not accurate, it cannot be used reliably.
- test technical scheme To verify the correctness of the contact stiffness analysis method of the spherical-rotation surface joint surface, and to obtain and accumulate accurate spherical-rotation surface joint surface contact stiffness data resources by test method, the test technical scheme, test device and specific implementation test The method is critical to ensuring the accuracy of the test.
- An object of the present invention is to provide a spherical-rotation surface joint surface contact stiffness test apparatus which solves the problem that the accuracy of the contact stiffness test for the spherical-rotation surface joint surface which is existing in the prior art is difficult to ensure.
- Another object of the present invention is to provide a test method for the contact stiffness of a spherical-rotation surface joint surface.
- the technical solution adopted by the present invention is a spherical-rotation surface joint surface contact stiffness testing device, which is included in the frame test bench, along the vertical axis direction of the frame test bench, from the bottom plate of the frame test bench to the bottom plate of the frame test bench.
- a lower test piece having a rotating surface at the upper end, a spherical test piece, an upper test piece having a rotating surface at the lower end, and a loading assembly are sequentially disposed between the top plates of the frame test bench, and the rotating surface of the upper test piece is pressed on the spherical test piece.
- the ball test piece is pressed on the rotating surface of the lower test piece, and the lower test piece is fixed on the bottom plate of the frame test stand, the loading component includes a three-direction force sensor mounted on the upper surface of the upper test piece, and the three-direction force sensor
- the sleeve is connected by a connecting screw, and the lower end of the sleeve is set on the outer circumference of the three-way force sensor, and the upper port of the sleeve is fixedly connected with a retaining ring, and the outer end of the sleeve is sleeved with a sleeve, and the sleeve is sleeved
- the outer diameter of the sleeve is matched with the inner hole of the flange sleeve, and the upper surface of the flange sleeve is fixedly connected with the top plate of the frame test stand; the top plate of the frame test stand, the upper end of the flange sleeve, and the
- a plurality of displacement sensors are mounted on the upper test piece, and each displacement sensor probe is aligned with the lower test piece, and is arranged along a circumference parallel to the Z axis and symmetric to the center of the sphere of the spherical test piece.
- Another technical solution adopted by the present invention is a test method for contact stiffness of a spherical surface and a rotating surface joint surface, using a test device,
- the testing device is included in the frame test bench, along the vertical axis direction of the frame test bench, from the bottom plate of the frame test bench to the top plate of the frame test bench, and the upper end has a rotating surface in turn.
- the loading assembly includes a three-way force sensor mounted on an upper surface of the upper test piece, and the three-way force sensor is connected with a sleeve through a connecting screw, and the lower end of the sleeve is set on the outer circumference of the three-way force sensor, and the sleeve is sleeved
- the upper port of the cylinder is fixedly connected with a retaining ring, and the outer end of the sleeve is sleeved with a flange sleeve, and the outer diameter of the sleeve is matched with the inner hole of the flange sleeve, and the upper surface of the flange sleeve and the frame test bench are
- the top plate is fixedly connected; the top plate of the frame test stand, the upper end of the flange sleeve, and the retaining ring are provided with a loading screw, and the loading screw and the connecting screw and the three-direction force sensor are coaxially arranged
- a plurality of displacement sensors are mounted on the upper test piece, and each displacement sensor probe is aligned with the lower test piece, and is arranged along a circumference parallel to the Z axis and symmetric to the center of the spherical test piece.
- the loading assembly for loading, rotation of the screw down load is applied to the test piece to ⁇ load F z, a three-component force sensors to measure the load Z z F., While the displacement sensor detected by the respective upper and lower test specimens The relative displacement between the pieces in the Z direction is taken as the average value of the measured values of the respective displacement sensors as ⁇ ⁇ , and finally the contact stiffness of the spherical-rotation surface joint surface is obtained by the corresponding formula.
- the invention has the beneficial effects that the spherical-conical surface contact stiffness, the spherical-ball joint contact stiffness, the plane-spherical joint surface stiffness, the straight channel-spherical surface are obtained by the double joint surface test scheme of the rotary surface-spherical-rotation surface.
- Joint surface stiffness, annular inner channel-spherical joint surface stiffness and annular outer channel-spherical joint surface stiffness six types of spherical-rotational surface single joint surface contact stiffness; parallel test verification, improved spherical-rotation surface
- parallel test verification improved spherical-rotation surface
- Figure 1 is a schematic structural view of a test device of the present invention
- Figure 2 is a schematic view showing the structure of a test piece for performing a double-joint surface contact stiffness test of a conical surface-spherical-conical surface according to the method of the present invention
- Figure 3 is a schematic view showing the structure of a test piece for performing a double joint surface contact stiffness test of a ball-and-sphere-ball socket according to the method of the present invention
- Figure 4 is a schematic view showing the structure of a test piece for performing a double-joint surface contact stiffness test of a ball-and-spherical-conical surface according to the method of the present invention
- Figure 5 is a schematic view showing the structure of a test piece for performing a double-joint surface contact stiffness test of a plane-spherical-conical surface according to the method of the present invention
- Figure 6 is a schematic view showing the structure of a test piece for performing a double-joint surface contact stiffness test of a plane-spherical-ball socket according to the method of the present invention
- FIG. 7 is a schematic structural view of a test piece for performing a double-joint surface contact stiffness test of a straight channel-spherical-conical surface according to the method of the present invention
- FIG. a is a schematic cross-sectional view
- FIG. b is a schematic cross-sectional view taken along line A-A of FIG.
- Figure 8 is a schematic structural view of a test piece for performing a double-joint surface contact stiffness test of a straight channel-spherical-ball socket according to the method of the present invention
- Figure a is a schematic cross-sectional view
- Figure b is a cross-sectional view taken along line BB of Figure a
- Figure 9 is a schematic view of Figure BB
- FIG. a is a schematic cross-sectional view
- FIG. b is a schematic cross-sectional view taken along line CC of FIG.
- Figure 10 is a schematic view showing the structure of a test piece for performing a double joint surface contact stiffness test of a ring-shaped inner channel-spherical-ball socket according to the method of the present invention
- Fig. a is a schematic cross-sectional view
- Fig. b is a schematic view of a D-D cross-section in Fig. a;
- Figure 11 is a schematic view showing the structure of a test piece for performing a double joint surface contact stiffness test of an annular outer channel-spherical-conical surface according to the method of the present invention
- Fig. a is a schematic cross-sectional view
- Fig. b is a schematic view of the E-E cross-section in Fig. a;
- Figure 12 is a schematic view showing the structure of a test piece for performing a double joint surface contact rigidity test of an annular outer channel-spherical-ball socket according to the method of the present invention
- Fig. a is a schematic cross-sectional view
- Fig. b is a cross-sectional view of the F-F portion in Fig. a.
- the device structure of the spherical-rotation surface joint surface stiffness test of the present invention is included in the frame test stand 13, along the vertical axis direction of the frame test stand 13, from the frame test stand 13
- a bottom test piece having a rotating surface at an upper end, a spherical test piece 2, an upper test piece 3 having a rotating surface at a lower end, and a loading assembly, and a rotating surface of the upper test piece 3 are sequentially disposed between the bottom plate and the top plate of the frame test stand 13 Pressed on the spherical test piece 2, the spherical test piece 2 is pressed against the rotating surface of the lower test piece 1, and the lower test piece 1 is fixed to the bottom plate of the frame-shaped test stand 13.
- the above-described loading assembly includes a loading screw 12, a flange sleeve 11, a thrust bearing 10, a retaining ring 9, a radial bearing 8, a nut 7, a sleeve 6, a connecting screw 5, and a three-way force sensor 4.
- the loading assembly structure includes a three-direction force sensor 4 mounted on the upper surface of the upper test piece 3, and a sleeve 6 is connected to the three-way force sensor 4 via a connecting screw 5, and the lower end of the sleeve 6 is fitted with a three-way force
- the upper port of the sleeve 6 is fixedly connected with a retaining ring 9, and the outer end of the sleeve 6 is provided with a flange sleeve 11 on the outer circumference of the sleeve 6, and the outer diameter of the ring of the sleeve 6 and the circle of the flange sleeve 11
- the upper surface of the flange sleeve 11 is fixedly connected with the top plate of the frame test stand 13; the top plate of the frame test stand 13 and the upper end of the flange sleeve 11 and the retaining ring 9 are provided with a loading screw 12
- the loading screw 12 is disposed coaxially with the connecting screw 5
- a plurality of displacement sensors ⁇ are mounted on the upper test piece 3, and the probes of each displacement sensor are aligned with the lower test piece 1, and are arranged along the circumference parallel to the x-axis and symmetric to the center of the spherical test piece 2.
- the loading screw 12 is screwed to the flange sleeve 11 , and the upper end of the thrust bearing 10 and the loading screw 12
- the shoulder of the thrust bearing is pressed, the lower end of the thrust bearing 10 is pressed against the retaining ring 9; the radial bearing 8 is fitted in the lower part of the loading screw 12, and the outer diameter of the bearing is matched with the inner hole of the sleeve of the sleeve 6, and the lower diameter of the loading screw 12 is extended.
- a nut 7 is attached to the end of the bearing 8.
- the above-mentioned device of the present invention performs the contact stiffness test principle of the spherical surface-various rotary surface joint surface, and adopts a double joint surface test method of a rotary surface-spherical surface-rotation surface which simultaneously contacts the upper and lower rotary bodies with a spherical body to solve
- the problem of direct displacement of the spherical displacement is difficult to detect; and the test scheme for obtaining the joint and parallel verification test of the spherical-various surface contact surface stiffness is adopted to improve the accuracy of the test.
- test methods use the same spherical test piece 2, for different spherical surfaces - various rotary surface joints, the specific test methods are,
- the lower end of the upper test piece 3 is a conical surface
- the upper end of the lower test piece 1 is a conical surface
- the conical surface of the upper test piece 3 has the same surface characteristics as the conical surface of the lower test piece 1 (BP, the conical surface is determined)
- the surface characteristics are the same as the taper, material, processing method and precision.
- the spherical test piece 2 is placed between the conical surface of the upper test piece 3 and the conical surface of the lower test piece 1, and the conical surface of the upper test piece 3 is
- the spherical surface of the spherical test piece 2 constitutes a spherical-conical surface joint surface
- the conical surface of the lower test piece 1 and the spherical surface of the spherical test piece 2 form another identical spherical-conical surface joint surface, which constitutes a conical surface-spherical surface-conical surface Double joint surface.
- the specific test method is: 1 first adjust each component so that the line of action of the load F z is parallel Yu Yu
- the shaft passes through the center of the spherical test piece 2, and is adjusted and monitored by the reading of the three-direction force sensor 4.
- the other components of the three-way force sensor 4 are monitored and adjusted to be approximately zero, and only the axial component of the three-way force sensor 4 is used.
- Z is the normal load F z; then adjust the installation of the displacement sensor, in a direction parallel to the Z axis and symmetrical to the center of the sphere 2 around the sphere specimen disposed a plurality of displacement sensors, for monitoring the adjustment of the displacement sensor readings, so the application of Z
- the change of the reading value of each displacement sensor to the load FJf is approximately the same to ensure that the measured displacement ⁇ ⁇ is consistent with the direction of the Z-direction load F z ; 2 the displacement sensor is fixed on the upper test piece 3, and the probe is aligned with the lower test piece 1, And the mounting point and the measuring point are as close as possible to the spherical test piece 2, and the deformation of the upper test piece 3, the spherical test piece 2 and the lower test piece 1 is calculated by the finite element, and the influence is removed from the detection result, so that the measured value ⁇ ⁇ contains only the conical surface - spherical - bis binding surface of the tapered surface of the contact deformation; 3 use loading component
- a double joint surface contact stiffness test scheme using a ball-and-sphere-ball socket and the above test apparatus are used, wherein the lower end of the upper test piece 3 is a ball socket (ie, an inner spherical surface), and the upper end of the lower test piece 1 is a ball socket.
- a ball socket ie, an inner spherical surface
- the ball socket of the upper test piece 3 has the same surface characteristics as the ball socket of the lower test piece 1, and the spherical test piece 2 is placed between the ball socket of the upper test piece 3 and the ball socket of the lower test piece 1, and the upper test piece 3
- the spherical surface of the ball socket and the spherical test piece 2 constitutes a spherical-ball joint surface
- the ball socket of the lower test piece 1 and the spherical surface of the spherical test piece 2 constitute another identical spherical surface-ball joint surface, which constitutes a ball-and-spherical surface- The double joint of the ball socket.
- ⁇ ball socket ⁇ ⁇ /2
- the spherical outer diameter of the spherical test piece 2 can be equal to or equal to the inner diameter of the spherical surface of the ball, or a spherical-ball-socket contact stiffness test with unequal radii can be performed.
- a double-jointed surface of a ball-and-spherical-conical surface is used, wherein the lower end of the upper test piece 3 is a ball socket (the same as the upper test piece 3 in the test (2)), and the upper end of the lower test piece 1 is Conical surface (same as the lower test piece 1 in the test (1)), the spherical test piece 2 is placed between the ball socket of the upper test piece 3 and the conical surface of the lower test piece 1, and the ball socket and the sphere of the upper test piece 3
- the spherical surface of the test piece 2 constitutes a spherical-ball joint surface
- the conical surface of the lower test piece 1 and the spherical surface of the spherical test piece 2 form a spherical-conical surface joint surface, which constitutes a double joint surface of the ball-and-spherical-conical surface.
- the specific test method is the same as the double joint surface stiffness test method of the conical surface-spherical-conical surface in the test (1), and the measured relative displacement ⁇ ⁇ between the lower test piece 1 and the upper test piece 3 is included.
- the test method can be used to obtain the test value of the ball-and-spherical-conical surface double joint surface contact stiffness. Parallel test verification of the contact stiffness ball dimension of the spherical-conical surface obtained by test (1) and the contact stiffness ball socket of the spherical-ball socket obtained by test (2), from equations 1), 2), 3) ,
- the contact stiffness test value of the spherical-conical surface obtained by the test (1) and the contact stiffness test value Kj of the spherical-ball socket obtained by the test (2) can be indirectly obtained by the formula 4);
- Test (1) and test (2) Indirect ball socket dimensions and ball-and-spherical-conical surface contact stiffness test values directly obtained from the test (3) ball-and-spherical-conical surface double bond surface stiffness test The ball dimensions are compared, and the parallel test is used to verify and improve the accuracy and reliability of the ball dimension and ball test value.
- the above test scheme and test apparatus are employed, wherein the lower end of the upper test piece 3 is a flat surface, and the upper end of the lower test piece 1 is a conical surface (same as the lower test piece 1 in the test (1)), the spherical test piece 2 Between the plane of the lower end of the upper test piece 3 and the conical surface of the upper end of the lower test piece 1, the plane of the upper test piece 3 and the spherical surface of the spherical test piece 2 form a spherical-plane joint surface, and the conical surface of the lower test piece 1
- the spherical surface of the spherical test piece 2 constitutes a spherical-conical surface joint surface, which constitutes a double-joint surface of a plane-spherical-conical surface.
- the specific test method is: Same as the double joint surface stiffness test method of the conical surface-spherical-conical surface in the test (1), the measured Z-direction relative displacement ⁇ ⁇ between the lower test piece 1 and the upper test piece 3
- the above test scheme and test apparatus are employed, wherein the lower end of the upper test piece 3 is flat (the same as the upper test piece 3 in (A) of the test (4)), and the upper end of the lower test piece 1 is a ball socket ( The same as the lower test piece 1 in the test (2), the spherical test piece 2 is placed between the plane of the lower end of the upper test piece 3 and the ball socket of the upper end of the lower test piece 1, the plane of the upper test piece 3 and the spherical test piece 2
- the spherical surface constitutes a spherical-plane joint surface
- the spherical cavity of the lower test piece 1 and the spherical surface of the spherical test piece 2 form a spherical-ball joint surface, which constitutes a double-joint surface of the plane-spherical-ball socket.
- the specific test method is the same as the double joint surface stiffness test method of the conical surface-spherical-conical surface in the test (1), and the measured Z-direction relative displacement ⁇ ⁇ between the lower test piece 1 and the upper test piece 3 is included.
- the Kj ball level obtained in this test (B) is compared with the ball level obtained by the test (A), and the parallel test is used to verify and improve the reliability of the ball level test value.
- the upper end of the lower test piece 1 is a straight channel
- the upper end of the lower test piece 1 is a conical surface (same as the lower test piece 1 in the test (1))
- the spherical test piece 2 is placed on the upper test piece.
- the straight channel of 3 and the conical surface of the lower test piece 1 constitute a spherical-straight channel joint surface, and the cone of the lower test piece 1
- the spherical surface of the surface and the spherical test piece 2 constitutes a spherical-conical surface joint surface, and constitutes a double-joint surface of a straight channel-spherical-conical surface.
- the specific test method is the same as the double joint surface stiffness test method of the conical surface-spherical-conical surface in the test (1), and the measured Z-direction relative displacement ⁇ ⁇ between the lower test piece 1 and the upper test piece 3 is included.
- the Kj straight groove ball cone is obtained by this test, and the Kj ball cone is obtained by the test (1), so that the Kj ball straight groove can be obtained by the formula 10).
- the spherical test piece 2 is placed between the straight channel of the upper test piece 3 and the ball socket of the lower test piece 1, the straight channel of the upper test piece 3 and the spherical test piece 2
- the spherical surface forms a spherical surface - a straight channel joint surface
- the ball socket of the lower test piece 1 The spherical surface of the spherical test piece 2 constitutes a spherical-ball joint surface, which constitutes a double joint surface of the straight channel-spherical-ball socket.
- the specific test method is the same as the double joint surface stiffness test method of the conical surface-spherical-conical surface in the test (1), and the measured Z-direction relative displacement ⁇ ⁇ between the lower test piece 1 and the upper test piece 3 is included.
- the straight groove ball socket is obtained by this test, and the Kj ball socket is obtained by the test (2), so that the straight groove can be obtained by the formula 12).
- the straight groove of the ball obtained in the test (B) is compared with the straight groove obtained by the test (A), and the reliability of the straight groove test value is verified and verified by the parallel test.
- the upper end of the lower test piece 1 is an annular inner channel
- the upper end of the lower test piece 1 is a conical surface (same as the lower test piece 1 in the test (1))
- the spherical test piece 2 is placed on the upper test piece.
- the annular inner channel of the third and the conical surface of the lower test piece 1 constitute a spherical-annular inner channel joint surface, and the cone of the lower test piece 1
- the spherical surface of the surface and the spherical test piece 2 constitutes a spherical-conical surface joint surface, and constitutes a double joint surface of the annular inner channel-spherical-conical surface.
- test method is the same as the double joint surface stiffness test method of the conical surface-spherical-conical surface in the test (1), and the measured Z-direction relative displacement ⁇ ⁇ between the lower test piece 1 and the upper test piece 3 includes the test.
- Inner groove ball cone Kj ball cone Kj ball inner groove / (Kj ball cone + Kj ball inner groove) 14)
- the inner groove ball cone is obtained by this test, and the Kj ball cone is obtained by the test (1), so that the inner ball groove can be obtained by the formula 14).
- the spherical test piece 2 is placed between the annular inner channel of the upper test piece 3 and the ball socket of the lower test piece 1, the annular inner channel of the upper test piece 3 and the spherical test piece 2
- the spherical surface forms a spherical-ring inner channel joint surface
- the ball socket of the lower test piece 1 and the spherical surface of the spherical test piece 2 form a spherical-ball joint surface, which constitutes a double joint surface of the annular inner channel-spherical-ball socket.
- the specific test method is the same as the test (1) conical surface-spherical-conical surface double joint surface stiffness test method.
- the measured Z-direction relative displacement ⁇ ⁇ between the lower test piece 1 and the upper test piece 3 includes the test.
- Kj inner groove ball socket Kj ball socket Kj ball inner groove / (Kj ball socket + Kj ball inner groove) 16)
- the Kj inner groove ball socket is obtained by this test, and the Kj ball socket is obtained by the test (2), so that the ball inner groove can be obtained by the formula 16).
- the inner groove obtained in the test (B) was compared with the inner groove obtained by the test (A), and the reliability of the test value of the inner groove was improved by parallel test.
- the upper end of the lower test piece 1 is an annular outer channel
- the upper end of the lower test piece 1 is a conical surface (same as the lower test piece 1 in the test (1))
- the spherical test piece 2 is placed on the upper test piece.
- the annular outer channel of 3 and the conical surface of the lower test piece 1 constitute a spherical-annular outer channel joint surface, and the cone of the lower test piece 1
- the spherical surface of the surface and the spherical test piece 2 constitutes a spherical-conical surface joint surface, and constitutes a double joint surface of the annular outer channel-spherical-conical surface.
- the specific test method is the same as the double joint surface stiffness test method of the conical surface-spherical-conical surface in the test (1), and the measured Z-direction relative displacement ⁇ ⁇ between the lower test piece 1 and the upper test piece 3 is included.
- Kj outer groove ball cone Kj ball cone Kj ball outer groove / (Kj ball cone + Kj ball outer groove) 18)
- Kj outer groove ball cone Kj ball cone Kj ball outer groove / (Kj ball cone + Kj ball outer groove) 18
- the spherical test piece 2 is placed between the annular outer channel of the upper test piece 3 and the ball socket of the lower test piece 1, the annular outer channel of the upper test piece 3 and the spherical test piece 2
- the spherical surface constitutes a spherical-annular outer channel joint surface
- the ball socket of the lower test piece 1 and the spherical surface of the spherical test piece 2 form a spherical-ball joint surface, which constitutes a double joint surface of the annular outer channel-spherical-ball socket.
- the specific test method is the same as the double joint surface stiffness test method of the conical surface-spherical-conical surface in the test (1), and the measured Z-direction relative displacement ⁇ ⁇ between the lower test piece 1 and the upper test piece 3 is included.
- the outer bulb obtained in the test (B) was compared with the outer bulb obtained by the test (A), and the reliability of the outer bulb test value was verified by parallel testing.
- the present invention can achieve the above-mentioned seven types of spherical-rotation surface joint surface contact stiffness test by using the above test device, and obtain a spherical-conical contact stiffness ball dimension, a spherical-ball socket.
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
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JP2014511704A JP5750193B2 (ja) | 2011-08-19 | 2011-10-21 | 球面−回転面の結合面の接触剛性のテスト装置および方法 |
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CN201110238569.8A CN102426085B (zh) | 2011-08-19 | 2011-08-19 | 球面-回转面结合面接触刚度测试装置及方法 |
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CN114608769A (zh) * | 2022-03-09 | 2022-06-10 | 广州机械科学研究院有限公司 | 制动卡钳和制动背板接触刚度测试系统、方法 |
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CN102426085A (zh) | 2012-04-25 |
JP5750193B2 (ja) | 2015-07-15 |
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CN102426085B (zh) | 2014-06-04 |
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