Inclined strut clutch contact angle measuring device and method

Abstract

The invention belongs to the technical field of clutch measurement, and particularly relates to a diagonal bracing clutch contact angle measuring device and method, and the device comprises a fixed seat which is provided with an inner ring and an outer ring. The inclined supporting blocks are installed between the inner ring and the outer ring. An inner guide rail is arranged at the inner ring of the inner ring on the fixed seat, and an inner measuring assembly is slidably mounted on the inner guide rail; an outer guide rail is arranged on the outer ring of the outer ring on the fixed seat, and an outer measuring assembly is slidably mounted on the outer guide rail; the inner measuring assembly and the outer measuring assembly are connected with a computer system; the device can directly measure the contact angle of the inclined support block of the clutch, judges whether the clutch meets the use requirement, is efficient and rapid, and is suitable for batch detection.

Description

Technical Field

[0001] The present invention belongs to the technical field of clutch measurement, and particularly relates to a device and method for measuring the contact angle of a swashplate clutch. Background Art

[0002] A swashplate overrunning clutch is a clutch that can automatically engage or disengage depending on the change in the relative motion speed or the change in the rotation direction of the main and driven parts. This clutch transmits torque only in one direction and automatically disengages when the input direction is opposite or the output end speed exceeds the input end speed in the transmission direction. The full-phase swashplate overrunning clutch has been increasingly applied in the design of auxiliary power units and air / gas turbine starters due to its simple structure, large load-bearing capacity, and smooth engagement.

[0003] The contact angle of a swashplate clutch is defined as the angle between the normal force action line and the resultant force action line (the line connecting the two contact points) at the contact point of the inner / outer profile surface of the swashplate, also known as the wedge angle. Referring to Figure 1 , a swashplate clutch has two unequal contact angles, one at the inner ring contact point (i.e., the tangent point I) and the other at the outer ring contact point (i.e., the tangent point O). The two contact angles are determined according to Figure 1 Determined. Figure 1 In , two rays CM and CN are drawn from the rotation center C of the inner and outer rings through the centers M and N of the surface curvature radii of the swashplate. The angle formed between CM and CN is β. The straight line OI intersects the rays CI and CO respectively, forming the wedge angles W and V between the swashplate and the outer and inner rings.

[0004] The swashplate clutch relies on the frictional force at the contact to achieve torque transmission. In order to stably transmit torque, there should be no relative sliding at the contact between the swashplate and the inner and outer rings, and the contact angle should satisfy the mechanical self-locking condition:

[0005] μ i >tanV (on the inner ring)

[0006] μ o >tanW (on the outer ring)

[0007] In the formula: ui and uo are the static friction coefficients between the swashplate and the inner and outer rings respectively.

[0008] In the design of a swashplate clutch, the size of the contact angle directly determines the self-locking condition of the clutch and the contact force magnitude under the stable engagement state, and at the same time affects the wedging and disengagement performance of the clutch. If the contact angle is not designed reasonably, it will cause premature wear or slipping of the clutch. Therefore, the contact angle is a key parameter for judging whether the clutch can work normally.

[0009] At present, there is no device in China for directly measuring the contact angle of the diagonal brace clutch. Generally, the profile of the diagonal brace block is measured by using a coordinate measuring machine or a laser scanner, and then the contact angle is calculated indirectly after importing it into mechanical design software. The method for calculating the contact angle by a coordinate measuring machine is introduced below.

[0010] Obtain the three-dimensional coordinates of the diagonal brace block through the probe of the coordinate measuring machine;

[0011] Import the three-dimensional coordinates of the diagonal brace block into mechanical design software, fit the three-dimensional coordinates with a curve to obtain the center coordinates and radii r2 and r1 of the arcs of the inner and outer profiles of the diagonal brace block, and calculate the center distance Z and central angle α of the arcs of the inner and outer profiles;

[0012] Calculate the contact angles W and V using geometric relationships.

[0013] Therefore, there is an urgent need for a measuring device that can conveniently, quickly and batch measure the contact angle of the clutch. Summary of the Invention

[0014] In view of the above problems, the present invention proposes a measuring device for the contact angle of a diagonal brace clutch, which includes a fixed seat. An inner ring and an outer ring are provided on the fixed seat; the diagonal brace block is installed between the inner ring and the outer ring;

[0015] An inner guide rail is provided on the fixed seat at the position of the inner circle of the inner ring, and an inner measuring component is slidably installed on the inner guide rail;

[0016] An outer guide rail is provided on the fixed seat at the position of the outer circle of the outer ring, and an outer measuring component is slidably installed on the outer guide rail;

[0017] The inner measuring component and the outer measuring component are connected to a computer system. By directly taking readings after the diagonal brace block is installed and then calculating through the computer system, the diagonal brace block can be measured more quickly and batch.

[0018] Further, both the inner measuring component and the outer measuring component include a motor body, a mounting seat and a sensor; the sensor and the motor body are installed on the mounting seat, and a sliding component is provided on the mounting seat;

[0019] The inner measuring component moves in the inner guide rail through the sliding component, and the outer measuring component moves in the outer guide rail through the sliding component; an inner transmission component is provided between the motor body of the inner measuring component and the inner guide rail; an outer transmission component is provided between the motor body of the outer measuring component and the outer guide rail.

[0020] Further, the sliding component includes bearings. A plurality of bearings are provided at one end of the mounting seat facing the fixed seat, and the bearings are installed on the mounting seat through fixing parts.

[0021] Further, the inner transmission assembly includes an inner gear, and the inner gear is connected to the output end of the motor body in the inner measurement assembly; an inner gear ring is provided on the side wall of the inner guide rail, and the inner gear ring meshes with the inner gear.

[0022] Further, the outer transmission assembly includes an outer gear, and the outer gear is connected to the output end of the motor body in the outer measurement assembly; an outer gear ring is provided on the side wall of the outer guide rail, and the outer gear ring meshes with the outer gear.

[0023] The present invention provides a method for measuring the contact angle of a diagonal brace clutch, which is applied to the above-mentioned diagonal brace clutch contact angle measuring device, and the steps are as follows:

[0024] According to the data of the sensor in the inner measurement assembly, calculate the polar coordinates of the contact point I between the diagonal brace block and the inner ring.

[0025] According to the data of the sensor in the outer measurement assembly, calculate the polar coordinates of the contact point O between the diagonal brace block and the outer ring.

[0026] According to the polar coordinates of the contact point I between the diagonal brace block and the inner ring and the polar coordinates of the contact point O between the diagonal brace block and the outer ring, calculate the contact angle of the diagonal brace block.

[0027] Further, calculating the coordinates of the contact point I between the diagonal brace block and the inner ring includes:

[0028] The difference between the outer radius ri of the inner ring and the distance li from the sensor in the inner measurement assembly to the center of the inner guide rail is rli.

[0029] The inner measurement assembly starts to move from one end of the inner guide rail and starts timing; the sensor in the inner measurement assembly measures the distance from the contact point I with the inner ring in real time, and the distance between the sensor and the contact point I with the inner ring is xi.

[0030] When the sensor in the inner measurement assembly moves to xi equal to rli, record the time as ti.

[0031] According to the rotational angular velocity a° / s of the sensor in the inner measurement assembly and the time ti, obtain the rotational angle of the inner measurement assembly as ati.

[0032] The polar coordinates of the contact point I between the diagonal brace block and the inner ring are (ri, ati).

[0033] Further, calculating the coordinates of the contact point O between the diagonal brace block and the outer ring includes:

[0034] The difference between the inner radius ro of the outer ring and the distance lo from the sensor in the outer measurement assembly to the center of the outer guide rail is rlo.

[0035] The outer measurement assembly moves synchronously with the inner measurement assembly and starts timing; the sensor in the outer measurement assembly measures the distance from the contact point O with the outer ring in real time, and the distance between the sensor and the contact point O with the outer ring is xo.

[0036] When the sensor in the external measurement component moves to where xo is equal to rlo, record the time as to;

[0037] According to the rotational angular velocity a° / s of the sensor in the external measurement component and the time to, obtain the rotational angle of the external measurement component as ato;

[0038] The polar coordinates of the contact point O between the diagonal brace and the outer ring are (ro, ato).

[0039] Further, calculating the contact angle of the diagonal brace includes:

[0040] According to the polar coordinates (ri, ati) and (ro, ato), calculate the wedge angle W of the diagonal brace with the outer ring;

[0041] According to the wedge angle W, ati, and ato, calculate the wedge angle V of the diagonal brace with the inner ring.

[0042] Further, the error between xi and rli is less than 0.01 mm, and extract the corresponding time ti;

[0043] The error between xo and rlo is less than 0.01 mm, and extract the corresponding time to.

[0044] Advantageous Effects

[0045] The advantageous effects of the present invention compared with the prior art are as follows:

[0046] 1. This application solves the problems of the existing coordinate measuring machine with high cost, slow measuring speed, high requirements for storage environment, and inapplicability to rapid multi-batch measurement of contact angles in the workshop. When designing or diagnosing faults of the clutch, the contact angle of the clutch diagonal brace can be directly measured to determine whether the clutch meets the usage requirements. This device is efficient and fast, suitable for batch detection; low in cost, convenient to maintain, and highly operable.

[0047] Other features and advantages of the present invention will be described in the subsequent specification, and, in part, will be obvious from the specification, or will be understood by implementing the present invention. The objectives and other advantages of the present invention can be achieved and obtained through the structures pointed out in the specification, claims, and drawings. Brief Description of the Drawings

[0048] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0049] Figure 1Shows a schematic diagram of the contact angle of the diagonal bracing clutch in the prior art.

[0050] Figure 2 Shows a schematic diagram of the calculation principle of the contact angle of the diagonal bracing clutch in an embodiment of the present invention.

[0051] Figure 3 Shows a top view of the whole in an embodiment of the present invention.

[0052] Figure 4 Shows a side view of the whole in an embodiment of the present invention.

[0053] Figure 5 Shows a schematic structural diagram of the inner measurement component and the outer measurement component in an embodiment of the present invention.

[0054] Figure 6 Shows Figure 5 A cross-sectional view taken along C-C in

[0055] In the figure, 1, inner measurement component; 2, motor body; 3, sensor; 4, bearing; 5, fixing member; 6, mounting seat; 7, outer ring; 8, inner ring; 9, outer guide rail; 10, inner guide rail; 11, fixing seat; 12, bolt; 13, outer measurement component. Specific embodiments

[0056] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Apparently, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0057] Currently, the existing coordinate measuring machines are costly, have a slow measurement speed, have high requirements for the storage environment, and are not suitable for rapid measurement of the contact angle in multiple batches in the workshop; they cannot calculate the contact angle after the diagonal bracing block wears: after the diagonal bracing block wears, the inner and outer profiles of the diagonal bracing block are no longer circular arcs;

[0058] This application provides a device for measuring the contact angle of a diagonal bracing clutch. Referring to Figure 3 and Figure 4 , it includes a fixing seat 11. An inner ring 8 and an outer ring 7 are provided on the fixing seat 11; the inner ring 8 and the outer ring 7 are concentric and the diameter of the outer ring 7 is greater than that of the inner ring 8, and the diagonal bracing block is installed between the inner ring 8 and the outer ring 7;

[0059] An inner guide rail 10 is provided on the fixing seat 11 at the position of the inner circle of the inner ring 8, and an inner measurement component 1 is slidably installed on the inner guide rail 10;

[0060] An outer guide rail 9 is provided at the position of the outer ring 7 of the fixing base 11, and an outer measuring assembly 13 is slidably mounted on the outer guide rail 9;

[0061] The inner measuring assembly 1 and the outer measuring assembly 13 are connected to a computer system;

[0062] By placing the stay block between the inner ring 8 and the outer ring 7 and setting a fixture between the inner ring 8 and the outer ring 7 to clamp the stay block; the inner guide rail 10 and the outer guide rail 9 are fixed to the fixing base 11 by bolts 12; then, the outer measuring assembly 13 slides on the outer guide rail 9, and the outer measuring assembly 13 collects data of the contact point between the stay block and the outer ring 7; the inner measuring assembly 1 slides on the inner guide rail 10, and the inner measuring assembly 1 collects data of the contact point between the stay block and the inner ring 8; the inner measuring assembly 1 and the outer measuring assembly 13 transmit the measurement data to the computer system, and the computer processes the transmitted data through a matlab program and calculates the contact angle;

[0063] This application solves the problems of the existing three-coordinate measuring machine, such as high cost, slow measuring speed, high requirements for storage environment, and inapplicability to rapid multi-batch measuring of contact angles in the workshop. When designing or diagnosing faults of the clutch, the contact angle of the clutch stay block can be directly measured to determine whether the clutch meets the usage requirements. This device is efficient and fast, suitable for batch detection; low in cost, convenient to maintain, and highly operable.

[0064] In an embodiment of the present invention, referring to Figure 5 and Figure 6 , both the inner measuring assembly 1 and the outer measuring assembly 13 include a motor body 2, a mounting seat 6, and a sensor 3; the sensor 3 and the motor body 2 are mounted on the mounting seat 6, and a sliding assembly is provided on the mounting seat 6;

[0065] The inner measuring assembly 1 moves in the inner guide rail 10 through the sliding assembly, and the outer measuring assembly 13 moves in the outer guide rail 9 through the sliding assembly; an inner transmission assembly is provided between the motor body 2 in the inner measuring assembly 1 and the inner guide rail 10; an outer transmission assembly is provided between the motor body 2 in the outer measuring assembly 13 and the outer guide rail 9;

[0066] The motor body 2 drives the inner transmission assembly to drive the inner measuring assembly 1 to accurately slide in the inner guide rail 10, and the motor body drives the outer transmission assembly to drive the outer measuring assembly 13 to slide in the outer guide rail 9; the motor body 2 can be a servo motor or a stepper motor, etc.; the sensor 3 can be a laser displacement sensor 3 or an ultrasonic displacement sensor 3, etc., to measure the distance between the sensor 3 and the contact point of the stay block;

[0067] In an embodiment of the present invention, referring to Figure 5 and Figure 6, the sliding component includes bearings 4, and four bearings 4 are arranged at one end of the mounting seat 6 facing the fixed seat 11. The four bearings 4 are mounted on the mounting seat 6 through four nuts.

[0068] By mounting the bearings 4 on the mounting seat 6 through fixing members 5, the fixing members 5 can be nuts or the like. The bearings 4 are in the outer guide rail 9 / inner guide rail 10, facilitating the movement of the mounting seat 6 in the outer guide rail 9 / inner guide rail 10.

[0069] In an embodiment of the present invention, referring to Figure 5 and Figure 6 , the inner transmission component includes an inner gear, and the inner gear is connected to the output end of the motor body 2 in the inner measurement component 1; an internal gear ring is provided on the side wall of the inner guide rail 10, and the internal gear ring meshes with the inner gear.

[0070] In an embodiment of the present invention, referring to Figure 5 and Figure 6 , the outer transmission component includes an outer gear, and the outer gear is connected to the output end of the motor body 2 in the outer measurement component 13; an external gear ring is provided on the side wall of the outer guide rail 9, and the external gear ring meshes with the outer gear.

[0071] When starting the measurement work, the inner measurement component 1 and the outer measurement component 13 are respectively located at the same end of the inner guide rail 10 and the outer guide rail 9 at the same time; the two motor bodies 2 are started simultaneously to drive the inner gear and the outer gear to rotate; the inner gear meshes with the internal gear ring to drive the sensor 3 in the inner measurement component 1 to move in the inner guide rail 10; the outer gear meshes with the external gear ring to drive the sensor 3 in the inner measurement component 1 to move in the outer guide rail 9.

[0072] The present invention provides a method for measuring the contact angle of an inclined strut clutch, which is applied to the above-mentioned inclined strut clutch contact angle measuring device, and the steps are as follows:

[0073] According to the data of the sensor 3 in the inner measurement component 1, calculate the polar coordinates of the contact point I between the inclined strut block and the inner ring 8;

[0074] According to the data of the sensor 3 in the outer measurement component 13, calculate the polar coordinates of the contact point O between the inclined strut block and the outer ring 7;

[0075] According to the polar coordinates of the contact point I between the inclined strut block and the inner ring 8 and the polar coordinates of the contact point O between the inclined strut block and the outer ring 7, calculate the contact angle of the inclined strut block;

[0076] In an embodiment of the present invention, calculating the coordinates of the contact point I between the inclined strut block and the inner ring 8, referring to Figure 2 , includes:

[0077] The difference between the outer radius ri of the inner ring 8 and the distance li from the sensor 3 in the inner measurement component 1 to the center of the inner guide rail 10 is rli;

[0078] The inner measurement component 1 starts to move from one end of the inner guide rail 10 and records the time; the sensor 3 in the inner measurement component 1 measures the distance from the contact point I with the inner ring 8 in real time, and the distance from the sensor 3 to the contact point I with the inner ring 8 is xi;

[0079] When the sensor 3 in the inner measurement component 1 moves to where xi is equal to rli, record the time as ti;

[0080] According to the rotational angular velocity a° / s of the sensor 3 in the inner measurement component 1 and the time ti, obtain the rotational angle of the inner measurement component 1 as ati;

[0081] The polar coordinates of the contact point I between the diagonal brace block and the inner ring 8 are (ri, ati).

[0082] In an embodiment of the present invention, calculating the coordinates of the contact point O between the diagonal brace block and the outer ring 7 includes:

[0083] The difference between the inner radius ro of the outer ring 7 and the distance lo from the sensor 3 in the outer measurement component 13 to the center of the outer guide rail 9 is rlo;

[0084] The outer measurement component 13 moves synchronously with the inner measurement component 1 and records the time; the sensor 3 in the outer measurement component 13 measures the distance from the contact point O with the outer ring 7 in real time, and the distance from the sensor 3 to the contact point O with the outer ring 7 is xo;

[0085] When the sensor 3 in the outer measurement component 13 moves to where xo is equal to rlo, record the time as to;

[0086] According to the rotational angular velocity a° / s of the sensor 3 in the outer measurement component 13 and the time to, obtain the rotational angle of the outer measurement component 13 as ato;

[0087] The polar coordinates of the contact point O between the diagonal brace block and the outer ring 7 are (ro, ato).

[0088] In an embodiment of the present invention, calculating the contact angle of the diagonal brace block includes:

[0089] According to the polar coordinates (ri, ati) and (ro, ato), calculate the wedge angle W between the diagonal brace block and the outer ring 7;

[0090] According to the wedge angle W, ati, and ato, calculate the wedge angle V between the diagonal brace block and the inner ring 8.

[0091] In an embodiment of the present invention, the error between xi and rli is less than 0.01 mm, and extract the corresponding time ti;

[0092] The error between xo and rlo is less than 0.01 mm, and extract the corresponding time to.

[0093] During the implementation process, first install the diagonal support block between the inner ring 8 and the outer ring 7; the inner measurement component 1 is initially located at the right end of the inner guide rail 10, and the outer measurement component 13 is initially located at the right end of the outer guide rail 9; start the two motor bodies 2 simultaneously to drive the inner measurement component 1 and the outer measurement component 13 to move synchronously; the rotational angular velocity a of the sensor 3 in the inner measurement component 1 and the outer measurement component 13 is 1° / s; then in the polar coordinate system with the center of the outer guide rail 9 as the pole, the polar coordinates of the contact points of the inner ring 8 and the outer ring 7 are (ri, ati) and (ro, ato) as (ri, ti) and (ro, to);

[0094] Then calculate the wedge angle W according to formula (1);

[0095]

[0096] Then calculate the wedge angle V according to formula (2);

[0097] V = W + ti - to (2);

[0098] For example, the outer radius ri of the inner ring 8 is 4 mm; li = 2 mm, rli = 2 mm;

[0099] The inner radius ro of the outer ring 7 is 8 mm; lo = 9 mm, rlo = 1 mm;

[0100] The data of the sensor 3 in the inner measurement component 1 are time and displacement (t, xi);

[0101] (1 s, 5 mm); (2 s, 4 mm); (3 s, 3 mm); (4 s, 2 mm); (5 s, 3 mm); At the 4th second, the measured distance xi of the sensor 3 is equal to rli, so the 4th second represents that the sensor 3 has passed through the contact point I of the diagonal support block and the inner ring 8; then ti = 4; the angle turned by the sensor 3 = ti × a = 4 × 1 = 4.

[0102] The data of the sensor 3 in the outer measurement component 13 are time and displacement (t, xo);

[0103] (1 s, 4 mm); (2 s, 2 mm); (3 s, 1 mm); (4 s, 2 mm);

[0104] At the 3rd second, the measured distance xo of the sensor 3 is equal to rlo, so the 3rd second represents that the sensor 3 has passed through the contact point O of the diagonal support block and the inner ring 8; then to = 3; the angle turned by the sensor 3 = to × a = 3 × 1 = 3.

[0105] This application does not require complex programming and calibration. Workers only need to place the diagonal support block between the inner ring 8 and the outer ring 7 to directly read the value. The single measurement time can be shortened to the second level, which is suitable for continuous batch detection on the production line. However, the point-by-point scanning of the coordinate measuring machine or optical instrument and the calculation of fitting curves with software are slow, and it is only applicable to single-piece detection in the laboratory and not suitable for the production line. The cost of this application is lower than that of coordinate measuring instruments, and there are no precision components and complex software, with low failure rate and strong tolerance to the workshop environment. It can also calculate the contact angle after wear.

[0106] Although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An inclined strut clutch contact angle measuring device, characterized in that, It includes a fixed seat (11) with an inner ring (8) and an outer ring (7) provided thereon; the diagonal support block is installed between the inner ring (8) and the outer ring (7); On the fixed seat (11), an inner guide rail (10) is provided at the position of the inner circle of the inner ring (8), and an inner measuring component (1) is slidably installed on the inner guide rail (10); On the fixed seat (11), an outer guide rail (9) is provided at the position of the outer circle of the outer ring (7), and an outer measuring component (13) is slidably installed on the outer guide rail (9); The inner measuring component (1) and the outer measuring component (13) are connected to a computer system.

2. The angle measuring device for the contact angle of the diagonal brace clutch according to claim 1, wherein Both the inner measuring component (1) and the outer measuring component (13) include a motor body (2), a mounting seat (6) and a sensor (3); the sensor (3) and the motor body (2) are installed on the mounting seat (6), and a sliding component is provided on the mounting seat (6); The inner measuring component (1) moves in the inner guide rail (10) through the sliding component, and the outer measuring component (13) moves in the outer guide rail (9) through the sliding component; an inner transmission component is provided between the motor body (2) in the inner measuring component (1) and the inner guide rail (10); an outer transmission component is provided between the motor body (2) in the outer measuring component (13) and the outer guide rail (9).

3. The angle measuring device for the contact angle of the diagonal brace clutch according to claim 2, wherein The sliding component includes bearings (4), and a plurality of bearings (4) are provided at one end of the mounting seat (6) facing the fixed seat (11), and the bearings (4) are installed on the mounting seat (6) through fixing members (5).

4. The angle measuring device for the contact angle of the diagonal brace clutch according to claim 2, characterized in that, The inner transmission component includes an inner gear, and the inner gear is connected to the output end of the motor body (2) in the inner measuring component (1); an inner gear ring is provided on the side wall of the inner guide rail (10), and the inner gear ring meshes with the inner gear.

5. The inclined strut clutch contact angle measuring device according to claim 2, characterized in that, The outer transmission component includes an outer gear, and the outer gear is connected to the output end of the motor body (2) in the outer measuring component (13); an outer gear ring is provided on the side wall of the outer guide rail (9), and the outer gear ring meshes with the outer gear.

6. A method for measuring the contact angle of an inclined strut clutch, characterized in that, Applied to a diagonal support clutch contact angle measuring device according to any one of claims 1-5, the steps are as follows: According to the data of the sensor (3) in the inner measuring component (1), calculate the polar coordinates of the contact point I between the diagonal support block and the inner ring (8); According to the data of the sensor (3) in the outer measuring component (13), calculate the polar coordinates of the contact point O between the diagonal support block and the outer ring (7); According to the polar coordinates of the contact point I between the diagonal support block and the inner ring (8) and the polar coordinates of the contact point O between the diagonal support block and the outer ring (7), calculate the contact angle of the diagonal support block.

7. A method for measuring the contact angle of an inclined strut clutch according to claim 6, characterized in that Calculating the coordinates of the contact point I between the diagonal support block and the inner ring (8) includes: The difference between the outer radius ri of the inner ring (8) and the distance li from the sensor (3) in the inner measuring component (1) to the center of the inner guide rail (10) is rli; The inner measuring component (1) starts to move from one end of the inner guide rail (10) and times; the sensor (3) in the inner measuring component (1) measures the distance from the contact point I with the inner ring (8) in real time, and the distance between the sensor (3) and the contact point I with the inner ring (8) is xi; When the sensor (3) in the inner measuring component (1) moves to xi equal to rli, record the time as ti; Based on the rotational angular velocity a° / s of the sensor (3) in the inner measurement component (1) and the time ti, the rotational angle of the inner measurement component (1) is obtained as ati; The polar coordinates of the contact point I between the stay block and the inner ring (8) are (ri, ati).

8. A method for measuring the contact angle of an inclined strut clutch according to claim 7, characterized in that, Calculate the coordinates of the contact point O between the stay block and the outer ring (7), including: The difference between the inner radius ro of the outer ring (7) and the distance lo from the sensor (3) in the outer measurement component (13) to the center of the outer guide rail (9) is rlo; The outer measurement component (13) moves synchronously with the inner measurement component (1) and is timed; the sensor (3) in the outer measurement component (13) measures the distance to the contact point O with the outer ring (7) in real time, and the distance between the sensor (3) and the contact point O with the outer ring (7) is xo; When the sensor (3) in the outer measurement component (13) moves to xo equal to rlo, record the time as to; Based on the rotational angular velocity a° / s of the sensor (3) in the outer measurement component (13) and the time to, the rotational angle of the outer measurement component (13) is obtained as ato; The polar coordinates of the contact point O between the stay block and the outer ring (7) are (ro, ato).

9. A method for measuring the contact angle of an inclined strut clutch according to claim 8, characterized in that, Calculate the contact angle of the stay block, including: According to the polar coordinates (ri, ati) and (ro, ato), calculate the wedge angle W of the stay block with the outer ring (7); According to the wedge angle W, ati and ato, calculate the wedge angle V of the stay block with the inner ring (8).

10. A method for measuring the contact angle of an inclined strut clutch according to claim 8, characterized in that, The error between xi and rli is less than 0.01 mm, and the corresponding time ti is extracted; The error between xo and rlo is less than 0.01 mm, and the corresponding time to is extracted.

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