Coding wheel testing tool

Abstract

The utility model relates to a coding wheel testing tool. Comprising a base, a supporting table used for supporting an encoding wheel, a positioning mechanism used for clamping and fixing the encoding wheel, a driving device used for driving the positioning mechanism to rotate, a supporting base installed at the bottom end of the driving device, a sliding device used for driving the supporting base to slide, and an adjusting rod used for supporting an encoder. The fixing seat is mounted on the base; the fixing piece is used for fixing the adjusting rod; the supporting table is arranged on the supporting seat; the positioning mechanism is arranged on an output shaft of the driving device; the supporting base is installed at the sliding end of the sliding device, and the sliding device is installed on the base. The fixing piece is fixedly connected to the adjusting rod and the fixing base. The technical problem that in the prior art, due to the fact that a coding wheel testing tool is simple in structure, clamping and detecting of coding wheels of different sizes and different models cannot be met at the same time, and consequently limitation exists in actual application of the coding wheel testing tool is solved.

Description

Technical Field

[0001] This utility model relates to the field of coding wheels, and in particular to a coding wheel testing fixture. Background Technology

[0002] Encoders are almost standard components for all types of spindles, and they are assembled together with encoder wheels. Specifically, the encoder wheel is mounted on the spindle along its length, and the encoder that works with it is mounted on the housing with a certain gap. By collecting the tooth count signal or grating signal from the encoder wheel, the spindle speed and spindle alignment can be detected in real time.

[0003] Encoders are almost standard components of all types of spindles, and they are often assembled with encoder wheels. The encoder wheels are typically mounted on the spindle, and the encoder itself is mounted on the housing with a specific gap. By collecting tooth count signals or grating signals from the encoder wheels, the spindle's rotational speed and orientation can be detected in real time. However, to ensure minimal dynamic radial runout of the encoder wheels during high-speed spindle rotation and thus a very stable encoder output signal, the radial clearance between the encoder wheels and the spindle is extremely small. Furthermore, the encoder's installation position has strict requirements, including axial and radial positions as well as yaw angle. Therefore, after installing the encoder and encoder wheels, the output signal often exceeds the tolerance requirements, making it difficult to determine whether the problem lies in the installation or the encoder / encoder wheel itself. If the issue is with the encoder or encoder wheels, they need to be removed and replaced, which is cumbersome, time-consuming, and labor-intensive. Existing encoder wheel testing fixtures, due to their relatively simple structure, cannot simultaneously accommodate the clamping and testing of encoder wheels of different sizes and models, thus limiting their practical application. Utility Model Content

[0004] This application provides a coding wheel testing fixture, which solves the technical problem that existing coding wheel testing fixtures, due to their simple structure, cannot simultaneously meet the clamping and testing requirements of coding wheels of different sizes and models, thus limiting their practical application.

[0005] The technical solution adopted in the embodiments of this application is as follows:

[0006] An encoder wheel testing fixture includes a base, a support platform for supporting the encoder wheel, a positioning mechanism for clamping and fixing the encoder wheel, a drive device for driving the positioning mechanism to rotate, a support seat mounted at the bottom end of the drive device, a sliding device for driving the support seat to slide, an adjusting rod for supporting the encoder, a fixed seat mounted on the base, and a fixing member for fixing the adjusting rod; the support platform is disposed on the support seat; the positioning mechanism is disposed on the output shaft of the drive device; the support seat is mounted on the sliding end of the sliding device, and the sliding device is mounted on the base; the fixing member is fixedly connected to the adjusting rod and the fixed seat.

[0007] A further technical solution is as follows: the positioning mechanism includes a fixed sleeve disposed on the output shaft of the drive device and a positioning component for abutting against the inner side of the encoder wheel; the fixed sleeve is provided with a plurality of the positioning components arranged in a circumferential array; the positioning component includes an arc-shaped stop for abutting against the inner side of the encoder wheel, a spring for buffering the arc-shaped stop, and a telescopic rod for limiting the spring; the spring is disposed around the telescopic rod; the telescopic end of the telescopic rod is connected to the arc-shaped stop; the other end of the telescopic rod is connected to the fixed sleeve.

[0008] A further technical solution is as follows: the positioning component further includes a damping block; the arc-shaped stop is provided with a number of sets of damping blocks arranged in an arc-shaped array.

[0009] A further technical solution is as follows: the sliding device includes a slider, a threaded rod for driving the slider to slide, bearing seats disposed at both ends of the threaded rod, slide rails disposed at the top of the base, and a threaded handle for driving the threaded rod to rotate; the slider is threadedly connected to the threaded rod, and the slider slides on two sets of slide rails; two sets of bearing seats are installed at the top of the base; the threaded handle is disposed at one end of the threaded rod; and the support seat is disposed at the top of the slider.

[0010] A further technical solution is that the fastener is a bolt.

[0011] A further technical solution is that the driving device is an electric motor.

[0012] One or more technical solutions provided in the embodiments of this application have at least the following technical effects or advantages:

[0013] 1. Due to the use of a base, support platform, positioning mechanism, drive device, support seat, sliding device, adjusting rod, fixed seat, and fixing components, when the encoder wheel needs to be tested, the operator places the encoder wheel onto the positioning mechanism. Since the spacing between each set of positioning components in the positioning mechanism can be adjusted by springs and telescopic rods, when the encoder wheel is placed on three sets of positioning components, each set of springs compresses according to the inner diameter of the encoder wheel, causing the corresponding arc-shaped stops to abut against the inner side of the encoder wheel, thus effectively fixing the encoder wheel. Then, the output shaft of the drive device drives the positioning mechanism to rotate, thereby rotating the encoder wheel and enabling testing. Because the degree of spring compression for each set of arc-shaped stops can be adjusted, and all three sets of arc-shaped stops are firmly abutting against the inner side of the encoder wheel, the positioning mechanism can be used to fix encoder wheels of different sizes and models, allowing this testing fixture to test encoder wheels of different sizes and models. When the spring is in a compressed state, the telescopic rod can prevent the spring from deforming, thus providing a certain degree of protection for the spring.

[0014] 2. Due to the use of damping blocks, when the arc-shaped stop blocks abut against the inside of the encoder wheel, the damping blocks on the arc-shaped stop blocks will fit against the inner surface of the encoder wheel, thereby making the three sets of arc-shaped stop blocks abut against the inside of the encoder wheel more effectively.

[0015] 3. Due to the use of a slider, threaded rod, bearing seat, slide rails, and threaded handle, and because the slider is threadedly connected to the threaded rod and slides on two sets of slide rails, when the operator rotates the threaded handle to rotate the threaded rod, the slider can slide back and forth along the two sets of slide rails. Since the support base is fixedly connected to the top of the slider, when the slider slides back and forth along the two sets of slide rails, it can drive the encoder wheel fixed on the positioning mechanism to move, thereby adjusting the radial clearance between the encoder and the encoder wheel. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of a coding wheel testing fixture in an embodiment of this utility model.

[0017] Figure 2 This is a partial structural diagram illustrating the positioning element in an embodiment of this utility model.

[0018] Figure 3 This is a partial structural schematic diagram illustrating the sliding device in an embodiment of this utility model.

[0019] In the diagram: 1. Base; 2. Support platform; 3. Positioning mechanism; 31. Fixing sleeve; 32. Positioning component; 321. Arc-shaped stop; 322. Spring; 323. Telescopic rod; 324. Damping block; 4. Drive device; 5. Support seat; 6. Sliding device; 61. Slider; 62. Threaded rod; 63. Bearing seat; 64. Slide rail; 65. Threaded handle; 7. Adjusting rod; 8. Fixing seat; 9. Fixing component. Detailed Implementation

[0020] This application provides a coding wheel testing fixture, which solves the technical problem that existing coding wheel testing fixtures, due to their simple structure, cannot simultaneously meet the clamping and testing requirements of coding wheels of different sizes and models, thus limiting their practical application.

[0021] The technical solution in this application is to solve the above problems, and the overall approach is as follows:

[0022] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0023] A coding wheel test fixture, such as Figure 1 and Figure 2 As shown, the device includes a base 1, a support platform 2 for supporting the encoder wheel, a positioning mechanism 3 for clamping and fixing the encoder wheel, a drive device 4 for driving the positioning mechanism 3 to rotate, a support seat 5 mounted on the bottom end of the drive device 4, a sliding device 6 for driving the support seat 5 to slide, an adjusting rod 7 for supporting the encoder, a fixed seat 8 mounted on the base 1, and a fixing member 9 for fixing the adjusting rod 7. The support platform 2 is mounted on the support seat 5. The positioning mechanism 3 is mounted on the output shaft of the drive device 4. The support seat 5 is mounted on the sliding end of the sliding device 6, and the sliding device 6 is mounted on the base 1. The fixing member 9 is fixedly connected to the adjusting rod 7 and the fixed seat 8.

[0024] The positioning mechanism 3 includes a fixed sleeve 31 mounted on the output shaft of the drive device 4 and a positioning element 32 for abutting against the inner side of the encoder wheel. The fixed sleeve 31 has several sets of positioning elements 32 arranged in a circumferential array. Each positioning element 32 includes an arc-shaped stop 321 for abutting against the inner side of the encoder wheel, a spring 322 for cushioning the arc-shaped stop 321, and a telescopic rod 323 for limiting the spring 322. The spring 322 surrounds the telescopic rod 323. The telescopic end of the telescopic rod 323 is connected to the arc-shaped stop 321. The other end of the telescopic rod 323 is connected to the fixed sleeve 31.

[0025] A fixed base 8 is fixedly installed on one side of the top of the base 1. A sliding device 6 is fixedly installed on the other side of the top of the base 1. A support platform 2 is fixedly connected to the top of the support base 5. The drive device 4 is preferably a motor. The output shaft of the drive device 4 passes through the support platform 2 and is drively connected to the positioning mechanism 3. The drive device 4 is fixedly installed on the top of the support base 5. The support base 5 is fixedly installed on the sliding end of the sliding device 6. The fixing member 9 is preferably a bolt. The fixing member 9 passes through the adjusting rod 7 and is detachably threadedly connected to the top of the fixed base 8. The encoder wheel can be fixedly sleeved on the positioning mechanism 3. The encoder wheel can be rotated by driving the positioning mechanism 3 through the output shaft of the drive device 4. The encoder is fixedly installed on one end of the adjusting rod 7. The angle of the adjusting rod 7 can be adjusted by loosening the fixing member 9, thereby moving the position of the encoder. By adjusting the sliding end of the sliding device 6, the encoder wheel fixed on the positioning mechanism 3 can be moved, thus adjusting the radial clearance between the encoder and the encoder wheel. A fixed sleeve 31 is fixedly connected to the output shaft of the drive device 4. Three sets of positioning elements 32 arranged in a circular array are fixedly connected to the fixed sleeve 31. The telescopic end of the telescopic rod 323 is fixedly connected to the arc-shaped stop 321. The other end of the telescopic rod 323 is fixedly connected to the fixed sleeve 31. One end of the spring 322 is fixedly connected to the arc-shaped stop 321. The other end of the spring 322 is fixedly connected to the fixed sleeve 31.

[0026] Because of the use of a base 1, support platform 2, positioning mechanism 3, drive device 4, support seat 5, sliding device 6, adjusting rod 7, fixed seat 8, and fixing component 9, when the coding wheel needs to be inspected, the operator places the coding wheel on the positioning mechanism 3. Since the spacing between each set of positioning components 32 in the positioning mechanism 3 can be adjusted according to the spring 322 and the telescopic rod 323, when the coding wheel is placed on the three sets of positioning components 32, each set of springs 322 will be compressed according to the inner diameter of the coding wheel, so that the corresponding arc-shaped stop 321 abuts against the inner side of the coding wheel. At this time, the coding wheel can be effectively fixed. Then, the output shaft of the drive device 4 drives the positioning mechanism 3 to rotate, which can drive the coding wheel to rotate, thereby enabling the coding wheel to be inspected. Since the degree of compression of each set of arc-shaped stops 321 can be adjusted by the spring 322, and all three sets of arc-shaped stops 321 can be firmly pressed against the inner side of the encoder wheel, encoder wheels of different sizes and models can be fixedly mounted on the positioning mechanism 3. This allows the testing fixture to test encoder wheels of different sizes and models. When the spring 322 is in a compressed state, the telescopic rod 323 can prevent the spring 322 from deforming, thus providing a certain degree of protection for the spring 322.

[0027] like Figure 2 As shown, the positioning component 32 also includes damping blocks 324. Several sets of damping blocks 324 arranged in an arc-shaped array are provided on the arc-shaped stop block 321.

[0028] Several sets of damping blocks 324 arranged in an arc-shaped array are fixedly connected to the arc-shaped stop block 321.

[0029] Due to the use of damping blocks 324, when the arc-shaped stop 321 abuts against the inner side of the encoder wheel, the damping blocks 324 on the arc-shaped stop 321 will fit against the inner surface of the encoder wheel, thereby making the fixing effect of the encoder wheel better when the three sets of arc-shaped stop blocks 321 abut against the inner side of the encoder wheel.

[0030] like Figure 3 As shown, the sliding device 6 includes a slider 61, a threaded rod 62 for sliding the slider 61, bearing seats 63 at both ends of the threaded rod 62, slide rails 64 on the top of the base 1, and a threaded handle 65 for rotating the threaded rod 62. The slider 61 is threadedly connected to the threaded rod 62, and slides on two sets of slide rails 64. Two sets of bearing seats 63 are mounted on the top of the base 1. The threaded handle 65 is located at one end of the threaded rod 62. A support base 5 is located at the top of the slider 61.

[0031] The threaded rod 62 is fixedly connected at both ends to the inner rings of the bearings in two sets of bearing seats 63. Two sets of symmetrically arranged slide rails 64 are fixedly connected to the top of the base 1.

[0032] The arrangement of a slider 61, threaded rod 62, bearing seat 63, slide rail 64, and threaded handle 65, with the slider 61 threadedly connected to the threaded rod 62 and sliding on the two sets of slide rails 64, allows the slider 61 to slide back and forth along the two sets of slide rails 64 when the operator rotates the threaded handle 65 to rotate the threaded rod 62. Since the support seat 5 is fixedly connected to the top of the slider 61, the back-and-forth sliding of the slider 61 along the two sets of slide rails 64 drives the encoder wheel fixed on the positioning mechanism 3 to move, thereby adjusting the radial clearance between the encoder and the encoder wheel.

[0033] Although preferred embodiments of the present invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the present invention.

[0034] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A coding wheel testing fixture, characterized in that, The device includes a base (1), a support platform (2) for supporting the encoder wheel, a positioning mechanism (3) for clamping and fixing the encoder wheel, a drive device (4) for driving the positioning mechanism (3) to rotate, a support seat (5) mounted on the bottom end of the drive device (4), a sliding device (6) for driving the support seat (5) to slide, an adjusting rod (7) for supporting the encoder, a fixed seat (8) mounted on the base (1), and a fixing member (9) for fixing the adjusting rod (7); the support platform (2) is disposed on the support seat (5); the positioning mechanism (3) is disposed on the output shaft of the drive device (4); the support seat (5) is mounted on the sliding end of the sliding device (6), and the sliding device (6) is mounted on the base (1); the fixing member (9) is fixedly connected to the adjusting rod (7) and the fixed seat (8).

2. The coding wheel testing fixture as described in claim 1, characterized in that, The positioning mechanism (3) includes a fixed sleeve (31) disposed on the output shaft of the drive device (4) and a positioning element (32) for abutting against the inner side of the encoder wheel; the fixed sleeve (31) is provided with a plurality of positioning elements (32) arranged in a circumferential array; the positioning element (32) includes an arc-shaped stop (321) for abutting against the inner side of the encoder wheel, a spring (322) for buffering the arc-shaped stop (321) and a telescopic rod (323) for limiting the spring (322); the spring (322) is arranged around the telescopic rod (323); the telescopic end of the telescopic rod (323) is connected to the arc-shaped stop (321); the other end of the telescopic rod (323) is connected to the fixed sleeve (31).

3. The coding wheel testing fixture as described in claim 2, characterized in that, The positioning component (32) also includes a damping block (324); the arc-shaped stop (321) is provided with a number of sets of damping blocks (324) arranged in an arc-shaped array.

4. The coding wheel testing fixture as described in claim 1, characterized in that, The sliding device (6) includes a slider (61), a threaded rod (62) for driving the slider (61) to slide, bearing seats (63) disposed at both ends of the threaded rod (62), a slide rail (64) disposed at the top of the base (1), and a threaded handle (65) for driving the threaded rod (62) to rotate; the slider (61) is threadedly connected to the threaded rod (62), and the slider (61) slides on two sets of the slide rails (64); two sets of the bearing seats (63) are installed at the top of the base (1); the threaded handle (65) is disposed at one end of the threaded rod (62); and the support seat (5) is disposed at the top of the slider (61).

5. The coding wheel testing fixture as described in claim 1, characterized in that, The fastener (9) is a bolt.

6. The coding wheel testing fixture as described in claim 1, characterized in that, The driving device (4) is a motor.

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