Stepped shaft inclined plane testing fixture

Abstract

The utility model discloses a step shaft inclined plane testing fixture, and relates to the technical field of workpiece detection. The support is internally provided with a movable sheet, and the movable sheet is internally provided with a measuring piece; wherein the measuring piece comprises a connecting rod, the connecting rod is sleeved with two rotating balls, the two rotating balls are connected with the positive electrode and the negative electrode of the power source through wires respectively, and the wires are connected with indicator lamps. According to the step shaft inclined plane testing fixture of the utility model, the two spherical rotating balls are adopted as two detection points and are respectively connected with the positive electrode and the negative electrode of the power supply, so that only when the two rotating balls are simultaneously attached to the inclined plane, the power supply can supply power to the indicating lamp to enable the indicating lamp to emit light; the technical problems that the detection is tedious and errors are easy to occur when the inclined angle of the inclined plane of the existing step shaft is detected are effectively solved, and whether the inclined plane of the workpiece is consistent with the required inclined angle can be judged only by observing whether the indicating lamp emits light.

Description

Technical Field

[0001] The utility model relates to the technical field of workpiece detection, in particular to a stepped shaft inclined surface detection tool. Background Art

[0002] Inspection fixtures are devices that detect whether parts are qualified. The frustum of the part is a part with very high dimensional requirements. Before use, it is necessary to detect whether the frustum of the part is qualified. The traditional inspection method is for inspectors to measure the size of the inclined surface of the step shaft of the workpiece with the help of calipers, micrometers and other inspection tools; and at present, the inclination angle of the step shaft is measured by three-coordinate measurement, which is inefficient and complicated to operate. It is impossible to monitor the measurement results in real time on site, especially the distance between the intersections of the inclined surfaces, which makes the measurement more cumbersome.

[0003] At present, the Chinese patent with the existing patent application number of "CN202221494494.X" discloses a part truncated cone inclined surface inspection fixture, including a bottom plate, a feeding piece, a movable plate and a sensing component; the feeding piece is movably connected to the bottom plate through the rotating shaft of the power piece, a positioning column is arranged on the feeding piece, the feeding piece corresponds to the position of the movable plate, a detection piece is arranged on the movable plate, the detection piece corresponds to the position of the feeding piece, the movable plate corresponds to the position of the sensing component, the sensing component is connected to the bottom plate through a fixed plate, the movable plate is movably connected to the fixed plate through a guide piece, and a movable groove is arranged on the movable plate. Although the difficulty of detection can be reduced to a certain extent, since the workpiece needs to rotate during the detection process, the detection piece in the contact position with the workpiece will be worn, resulting in deviations in the detection results. At this time, it can only be replaced, which wastes resources. At the same time, since each detection requires manual adjustment by the inspector, the repeatability of the device is seriously affected.

[0004] However, during the implementation of the above technical solution, it was found that there were at least the following technical problems:

[0005] The detection is cumbersome and prone to errors: When detecting the inclination angle of the existing step shaft, most of the tools that can detect the distance are used for auxiliary detection. For example, calipers and micrometers can measure the horizontal and vertical distances of the inclined surface, and then calculate the results by the angle calculation formula. The whole process is very cumbersome and the human influence factor has a great influence, which makes the detection results prone to fluctuations; and the method with relatively high detection accuracy is three-coordinate measurement (large volume), but this method also requires measurement and calculation, so it is still impossible to get the results intuitively and quickly. In addition, due to the above detection method, only a certain position of the inclined surface can be detected at a time (that is, only the inclined surface at the installation The inclined surface of the lower part is detected), and for the frustum cone workpiece, it is necessary to detect the inclination angles at different positions at the same time during the detection, which increases the amount of calculation. The current solution is to solve it by rotating, that is, keep the detection tool stationary and rotate the workpiece to adjust the detection point. If the device directly contacts the inclined surface of the workpiece (such as the above-mentioned patent application document: CN202221494494.X), the workpiece needs to be rotated during the detection process, and the detection part at the contact position with the workpiece will wear, resulting in deviations in the detection results. At this time, this problem can only be solved by replacement, which leads to serious waste of resources. For this reason, we propose a step shaft inclined surface inspection fixture. Summary of the invention

[0006] 1. Technical issues to be resolved

[0007] In view of the shortcomings of the prior art, the utility model provides a stepped shaft inclined surface inspection tool. Since two spherical rotating balls are used as two inspection points, and the two rotating balls are respectively connected to the positive and negative poles of the power supply, the two inspection points are like the positive and negative poles of the power supply. Therefore, only when the two rotating balls are in contact with the inclined surface at the same time, Figure 8 As shown in (b), the power supply can supply power to the indicator light on its circuit, and the indicator light will light up. Then, by simply observing whether the indicator light is on, it is possible to determine whether the inclined surface of the workpiece is consistent with the inclination angle formed by the two rotating balls. Secondly, since the two rotating balls are installed on the same connecting rod, the position between the two detection points can be changed by adjusting the inclination angle of the connecting rod, thereby improving the adaptability of the device and solving the technical problem that the inclination angle of the existing step shaft is cumbersome and prone to errors during detection.

[0008] (II) Technical solution

[0009] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:

[0010] A step shaft inclined surface inspection tool, the inspection tool comprising:

[0011] Parts table;

[0012] A bracket, wherein the bracket is arranged on one side of the part table, and a movable sheet which can slide up and down is installed inside the bracket, and a measuring piece for detecting the inclination angle of the inclined surface of the workpiece is installed inside the movable sheet;

[0013] The measuring member comprises a connecting rod with an adjustable tilt angle, and the outer sleeve of the connecting rod is provided with two corresponding rotating balls, and the two rotating balls are respectively connected to the positive and negative electrodes of the power supply through wires, and the wires are connected to indicator lights;

[0014] When both rotating balls are in contact with the inclined surface of the workpiece, a path is formed between the power supply and the indicator light, and the power supply supplies power to the indicator light. Only when the two rotating balls are in contact with the inclined surface at the same time, a path can be formed between the metal ring, the power supply and the indicator light. At this time, the power supply supplies power to the indicator light, and the indicator light is illuminated. Therefore, during the inspection, it is only necessary to observe whether the indicator light is illuminated to determine whether the inclined surface of the workpiece is consistent with the inclination formed by the two rotating balls.

[0015] Preferably, the measuring member further comprises a sliding seat mounted on the movable sheet, the sliding seat is arc-shaped, and a slidable movable pin is mounted inside the sliding seat;

[0016] Among them, one end of the connecting rod is connected to the movable pin through a rotating shaft, and the other end is hinged to the connecting seat installed at the bottom of the movable plate. Therefore, when the movable pin slides downward, the connecting rod rotates around the hinge point between it and the connecting seat, thereby changing the inclination angle of the connecting rod and the rotating ball thereon. In this way, workpieces with different inclination angles can be detected, thereby improving the applicability of the detection device.

[0017] Preferably, one end of the movable pin inserted into the sliding seat is connected to a sliding block, and the sliding block is connected to the cover plate outside the sliding seat by an adjusting bolt, so that when the cover plate slides following the movable pin, the pointer on the cover plate points to different scales, thereby observing the inclination angle of the connecting rod.

[0018] Preferably, the cover plate is provided with an embedding groove on one side facing the sliding seat, and mutually engageable latching teeth are provided between the inner wall of the embedding groove and the edge of the sliding seat. When the cover plate is fitted with the sliding seat, the edge of the sliding seat is embedded in the embedding groove, and the latching teeth at the fitting point of the two are engaged with each other.

[0019] Preferably, the outer wall of the connecting rod is connected with two metal rings, and the metal rings correspond to the rotating balls one by one. The rotating balls are located outside the metal rings and can rotate relative to each other, so when the workpiece to be tested is rotated for detection, the friction between the rotating balls and the workpiece can be reduced;

[0020] The metal ring is connected to the positive and negative electrodes of the power supply through a wire, and the metal ring is fitted with the rotating ball.

[0021] Preferably, a rangefinder and an electromagnet core are also installed on the bracket, and the rangefinder and the electromagnet core are respectively located on the upper and lower sides of the movable sheet;

[0022] Among them, during the detection, since the top of the movable piece is connected to the probe of the rangefinder, the rangefinder will also display the downward movement distance of the movable piece during the downward movement, thereby also detecting the inclination angle between the tool bevel and the bottom surface of the workpiece;

[0023] The lower part of the movable sheet is connected to the electromagnet core through a spring, and when the electromagnet core is energized, the movable sheet can be pulled to move downward.

[0024] Preferably, two limit posts are provided on one side of the part table close to the bracket, and the two limit posts are respectively located on both sides of the bracket, so that when the part seat is simultaneously fitted with the two limit posts, it can be ensured that the inclined surface of the workpiece corresponds to the rotating ball on the movable sheet, which is convenient for subsequent rotation detection;

[0025] One end of the movable sheet extends to the top of the part table, and the rotating ball is arranged at this end. When the workpiece is between the two limiting columns, the inclined surface of the workpiece corresponds to the rotating ball up and down.

[0026] (III) Beneficial effects

[0027] 1. Since two spherical rotating balls are used as two detection points, and the two rotating balls are connected to the positive and negative poles of the power supply respectively, the two detection points are like the positive and negative poles of the power supply. Therefore, only when the two rotating balls are in contact with the inclined surface at the same time, Figure 8 As shown in (b), the power supply can supply power to the indicator light on its circuit, and the indicator light will light up. Therefore, the technical problem that the inclination angle of the existing step shaft is complicated and prone to errors during detection is effectively solved. Then, it is only necessary to observe whether the indicator light is on to determine whether the inclination of the workpiece is consistent with the inclination angle formed by the two rotating balls. Secondly, since the two rotating balls are installed on the same connecting rod, the position between the two detection points can be changed by adjusting the inclination angle of the connecting rod, thereby improving the adaptability of the device.

[0028] 2. Since the movable sheet is connected to the electromagnet core by a spring, and the probe of the rangefinder fits the top of the movable sheet, during detection, by energizing the electromagnet core, the movable sheet can be driven to move downward, thereby pressing on the workpiece to be tested, which is convenient for subsequent detection. At the same time, the probe located above the movable sheet moves with it, thereby detecting the distance between the inclined surface of the workpiece and the bottom of the workpiece. In addition, during the rotation of the workpiece, it is also possible to determine whether the position of the inclined surface of the workpiece has changed by observing whether the value of the rangefinder has changed. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The above description is only an overview of the technical solution of the utility model. In order to more clearly understand the technical means of the utility model and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the utility model in conjunction with the accompanying drawings.

[0030] Figure 1 This is an overall structural diagram of an embodiment of the utility model;

[0031] Figure 2 This is a structural diagram of the bracket and the detection assembly in the embodiment of the utility model;

[0032] Figure 3 In the embodiment of the utility model Figure 2 A partial cross-sectional view of

[0033] Figure 4 This is an exploded structural diagram of the detection component in the embodiment of the utility model;

[0034] Figure 5 This is one of the structural diagrams of the measuring member in the embodiment of the utility model;

[0035] Figure 6 This is the second structural diagram of the measuring component in the embodiment of the utility model;

[0036] Figure 7 This is a schematic diagram of the detection process of an embodiment of the utility model;

[0037] Figure 8 It is a schematic diagram of the step shaft inclined surface detection in the embodiment of the utility model;

[0038] Fig. 9 It is a circuit diagram of a power supply and an indicator light in an embodiment of the utility model.

[0039] Legend:

[0040] 1. Tool bench;

[0041] 2. Parts table;

[0042] 3. Parts seat;

[0043] 4. Bracket;

[0044] 5. Detection assembly; 51. Distance meter; 52. Probe; 53. Active sheet; 54. Measuring piece; 541. Sliding seat; 542. Sliding block; 543. Cover plate; 544. Adjusting bolt; 545. Active pin; 546. Connecting rod; 547. Connecting seat; 548. Rotating ball; 55. Electromagnetic core;

[0045] 6. Metal ring;

[0046] 7. Limiting column;

[0047] 8. Indicator light. DETAILED DESCRIPTION

[0048] The embodiment of the present application provides a stepped shaft inclined plane inspection tool, which effectively solves the technical problem that the detection of the existing stepped shaft inclined plane inclination angle is cumbersome and prone to errors. When the existing stepped shaft inclined plane inclination angle is detected, two spherical rotating balls are used as two detection points, and the two rotating balls are respectively connected to the positive and negative poles of the power supply. At this time, the two detection points are like the positive and negative poles of the power supply. Therefore, only when the two rotating balls are in contact with the inclined plane at the same time, such as Figure 8 As shown in (b), the power supply supplies power to the indicator light, and the indicator light is illuminated. Then, by simply observing whether the indicator light is illuminated, it is possible to determine whether the inclined surface of the workpiece is consistent with the inclination angle formed by the two rotating balls. Secondly, since the two rotating balls are installed on the same connecting rod, the position between the two detection points can be changed by adjusting the inclination angle of the connecting rod, thereby improving the adaptability of the device.

[0049] Example 1

[0050] The technical solution in the embodiment of the present application effectively solves the technical problem that the detection of the inclination angle of the existing step shaft is cumbersome and prone to errors. The present application is aimed at workpieces made of conductive materials. The overall idea is as follows:

[0051] In view of the problems existing in the prior art, the utility model provides a stepped shaft inclined plane inspection fixture, which is mainly composed of a tool table 1 and a bracket 4. The bracket 4 is located behind the tool table 1. A disc-shaped part table 2 is installed on the tool table 1 for placing the workpiece to be inspected. In order to avoid friction between the workpiece to be inspected and the part table 2 and facilitate subsequent rotation inspection, a part seat 3 that can support the workpiece is placed on the part table 2. Figure 7 As shown, during the inspection, the workpiece to be inspected can be placed on the part seat 3, and then the part seat 3 is pushed to move the workpiece in the direction of the bracket 4, and when the workpiece rotates, it will not rub against the part table 2. In order to improve the efficiency of the inspection, it is necessary to have a device that can quickly determine whether the inclination angle of the inclined surface of the workpiece is the required inclination angle (detection component 5), which is also the main improvement scheme of the present application. The specific structure is as follows:

[0052] A movable plate 53 that can slide up and down is installed inside the bracket 4. The movable plate 53 needs to extend above the part table 2, so that the measuring piece 54 on the movable plate 53 can be pressed on the workpiece during subsequent inspection. In order to detect the inclination angle of the inclined surface of the workpiece, a connecting rod 546 with an adjustable inclination angle is installed at the bottom of the movable plate 53, and two rotating balls 548 are sleeved on the outside of the connecting rod 546. Figure 5As shown, two metal rings 6 are fixedly mounted on the outer wall of the connecting rod 546, and the metal rings 6 are connected to the rotating balls 548 one by one. During the inspection, in order to remind the inspector whether the workpiece is qualified, the metal rings 6 are connected to the battery at the bottom of the tool bench 1 through wires, and the two metal rings 6 are connected to the positive and negative electrodes of the power supply respectively, and then an indicator light 8 is connected to the line between the power supply electrode and the metal rings 6, so that the two metal rings 6 are like switches, such as Figure 8 As shown in (b), only when the two rotating balls 548 are in contact with the inclined surface at the same time, a passage can be formed between the metal ring 6, the power supply, and the indicator light 8. At this time, the power supply supplies power to the indicator light 8, and the indicator light 8 is illuminated. Therefore, during the inspection, it is only necessary to observe whether the indicator light 8 is illuminated to determine whether the inclined surface of the workpiece is consistent with the inclination angle formed by the two rotating balls 548. The specific situation is as follows:

[0053] During the detection process, when the inclination angle of the workpiece is smaller than the inclination angle of the connecting rod 546, as shown in FIG. Figure 8 As shown in (a), of the two rotating balls 548, only the rotating ball 548 located at the bottom can fit with the inclined surface of the workpiece, while the rotating ball 548 located at the top is suspended. At this time, a "short circuit" is formed between the power supply and the indicator light 8, and the indicator light 8 cannot be powered on and illuminated. Therefore, it can be judged that the inclined angle of the surface of the workpiece to be measured does not meet the requirements. It is a defective product.

[0054] Similarly, when the inclination angle of the workpiece is greater than the inclination angle of the connecting rod 546, Figure 8 As shown in (c), only the rotating ball 548 located at the top can fit with the inclined surface of the workpiece, while the rotating ball 548 located at the bottom is in a suspended state. At this time, the power supply and the indicator light 8 are also in a "short circuit" state and cannot emit light.

[0055] However, only when the inclination angle of the workpiece is equal to the inclination angle of the connecting rod 546, such as Figure 8 As shown in (b), the two rotating balls 548 are simultaneously fitted with the inclined surface of the workpiece (the current can flow between the two rotating balls 548 through the workpiece), and a "path" is formed between the power supply and the indicator light 8, and the indicator light 8 is lit, so that the inclination angle of the surface of the workpiece to be measured can be judged to meet the requirements. It is a qualified product.

[0056] In order to ensure that the inclined surface of the workpiece can correspond to the movable sheet 53 up and down during detection, two limit posts 7 are arranged at the position of the tool table 1 close to the part table 2, and the two limit posts 7 are respectively located on both sides of the bracket 4, so that when the part seat 3 is simultaneously fitted with the two limit posts 7, Figure 7 As shown in (c), ensure that the inclined surface of the workpiece corresponds to the rotating ball 548 on the movable sheet 53, so as to facilitate the subsequent rotation detection.

[0057] Since the two rotating balls 548 on the connecting rod 546 can rotate relative to the metal ring 6, the friction between the rotating balls 548 and the workpiece can be reduced when the workpiece to be tested is rotated.

[0058] In order to improve the applicability and detection range of the device, an arc-shaped sliding seat 541 is installed on the movable sheet 53, and an arc-shaped movable pin 545 is installed inside the sliding seat 541. The movable pin 545 can slide inside the sliding seat 541. Figure 4 and Figure 6 As shown, one end of the connecting rod 546 is hinged to the movable pin 545 (a rotating shaft can be used), and the other end is hinged to the connecting seat 547 installed at the bottom of the movable plate 53; therefore, in the process of the movable pin 545 sliding downward, the connecting rod 546 rotates around the hinge point between it and the connecting seat 547, thereby changing the inclination angle of the connecting rod 546 and the rotating ball 548 thereon, so that workpieces with different inclination angles can be detected, thereby improving the applicability of the detection device.

[0059] After the movable pin 545 is adjusted, it is necessary to maintain the adjusted position of the movable pin 545, so a sliding block 542 is connected to one end of the movable pin 545 inserted into the sliding seat 541, and the sliding block 542 is connected to the cover plate 543 on the outside of the sliding seat 541 by an adjusting bolt 544, so that the cover plate 543 can be moved in the direction of the sliding block 542 by rotating the adjusting bolt 544. In order to ensure the stability of the connection, an embedding groove is provided on the side of the cover plate 543 facing the sliding seat 541, and mutually meshing teeth are provided between the inner wall of the embedding groove and the edge of the sliding seat 541, so that when the cover plate 543 and the sliding seat 541 are fitted together, the edge of the sliding seat 541 can be embedded in the embedding groove, and the teeth at the fitting point of the two are meshed with each other, thereby locking them, thereby ensuring the position between the two. Secondly, in order to facilitate the observation of the adjusted angle of the connecting rod 546, a pointer is set on the cover 543, and the pointer corresponds to the scale on the surface of the sliding seat 541. In this way, when the cover 543 slides following the movable pin 545, the pointer on the cover 543 points to different scales, thereby observing the inclination angle of the connecting rod 546.

[0060] The lower part of the movable piece 53 is connected to the electromagnet core 55 through a spring, and when the electromagnet core 55 is energized, the movable piece 53 can be pulled to move downward.

[0061] In the specific implementation process, the workpiece to be measured is first placed on the part seat 3 on the top of the part table 2, such as Figure 7 As shown in (a), the workpiece and the part seat 3 are then pushed together toward the direction of the bracket 4 until the part seat 3 is simultaneously in contact with the two limit posts 7. Figure 7As shown in (c), the switch on the side of the tool bench 1 is then pressed to control the power supply to the electromagnet core 55. When the electromagnet core 55 is energized, magnetism is generated to attract the movable sheet 53 located above it, so that the movable sheet 53 drives the connecting rod 546 to move downward. In order to ensure that the electromagnet core 55 can stably attract the movable sheet 53, an iron sheet is connected to the bottom of the movable sheet 53. In this way, there is no need to consider the material of the movable sheet 53, and the movable sheet 53 can be attracted.

[0062] During the downward movement of the movable sheet 53, the connecting rod 546 below the movable sheet 53 drives the rotating ball 548 thereon to move toward the workpiece on the part table 2 until the movable sheet 53 is in contact with the surface of the workpiece. At this time, the indicator light 8 on the tool table 1 can be observed. If the indicator light 8 is on, it means that the inclination angle of the workpiece meets the requirement; otherwise, it does not meet the requirement. After the inspection, the workpiece is rotated so that the inclined surface of the workpiece passes under the rotating ball 548 in turn, thereby performing an all-round inspection of the inclined surface of the workpiece. Moreover, since the two rotating balls 548 on the connecting rod 546 can rotate relative to the metal ring 6, the friction between the rotating ball 548 and the workpiece can be reduced during the rotation inspection of the workpiece to be tested.

[0063] Example 2

[0064] Based on Example 1, the embodiment of the present application is to detect the distance between the inclined surface of the workpiece and the bottom of the workpiece. The overall idea is as follows:

[0065] A rangefinder 51 is connected to the top of the movable piece 53, and a probe 52 at the bottom of the rangefinder 51 is attached to the top of the movable piece 53, so as to detect the distance of the movable piece 53 moving up and down. Therefore, during the detection, since the top of the movable piece 53 is connected to the probe 52 of the rangefinder 51, the rangefinder 51 will also display the distance of the movable piece 53 moving down during the moving down process, thereby also detecting the inclination angle between the tool bevel and the bottom surface of the workpiece.

[0066] Finally, it should be noted that: Obviously, the above embodiments are only examples for clearly explaining the present invention, and are not intended to limit the implementation methods. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from this are still within the scope of protection of the present invention.

Claims

1. A stepped shaft inclined surface inspection fixture, characterized in that: The test fixture includes: Parts table (2); A bracket (4), the bracket (4) being arranged on one side of the part table (2), and a movable sheet (53) which can slide up and down is installed inside the bracket (4), and a measuring piece (54) for detecting the inclination angle of the inclined surface of the workpiece is installed inside the movable sheet (53); The measuring member (54) comprises a connecting rod (546) with an adjustable tilt angle, and the connecting rod (546) is provided with two corresponding rotating balls (548) on its exterior, and the two rotating balls (548) are respectively connected to the positive and negative electrodes of a power source through wires, and the wires are connected to an indicator light (8); When the two rotating balls (548) are both in contact with the inclined surface of the workpiece, a passage is formed between the power source and the indicator light (8), and the power source supplies power to the indicator light (8).

2. A stepped shaft inclined surface inspection fixture as claimed in claim 1, characterized in that: The measuring member (54) further comprises a sliding seat (541) mounted on the movable sheet (53); the sliding seat (541) is arc-shaped, and a slidable movable pin (545) is mounted inside the sliding seat (541); One end of the connecting rod (546) is connected to the movable pin (545) via a rotating shaft, and the other end is hinged to a connecting seat (547) installed at the bottom of the movable sheet (53); During the sliding of the movable pin (545), the connecting rod (546) rotates around the hinge point between the connecting rod and the connecting seat (547).

3. A stepped shaft inclined surface inspection fixture as claimed in claim 2, characterized in that: One end of the movable pin (545) inserted into the sliding seat (541) is connected to a sliding block (542), and the sliding block (542) is connected to a cover plate (543) outside the sliding seat (541) via an adjusting bolt (544); The pointer on the cover plate (543) corresponds to the scale on the surface of the sliding seat (541).

4. A stepped shaft inclined surface inspection fixture as claimed in claim 3, characterized in that: The cover plate (543) is provided with an embedding groove on one side facing the sliding seat (541), and mutually meshing latch teeth are provided between the inner wall of the embedding groove and the edge of the sliding seat (541); when the cover plate (543) and the sliding seat (541) are fitted together, the edge of the sliding seat (541) is embedded in the embedding groove, and the latch teeth at the fitting position of the two are meshed with each other.

5. A stepped shaft inclined surface inspection fixture as claimed in claim 1, characterized in that: The outer wall of the connecting rod (546) is connected to two metal rings (6), and the metal rings (6) correspond to the rotating balls (548) one by one. The rotating balls (548) are located outside the metal rings (6), and the two can rotate relative to each other. The metal ring (6) is connected to the positive and negative electrodes of the power source via a wire, and the metal ring (6) is in close contact with the rotating ball (548).

6. A stepped shaft inclined surface inspection fixture as claimed in claim 1, characterized in that: The bracket (4) is also equipped with a distance meter (51) and an electromagnet core (55), and the distance meter (51) and the electromagnet core (55) are respectively located on the upper and lower sides of the movable sheet (53); The probe (52) at the bottom of the rangefinder (51) is attached to the top of the movable sheet (53) to detect the distance of the movable sheet (53) moving up and down; The electromagnet core (55) is connected to the movable sheet (53) via a spring, and when the electromagnet core (55) is energized, the movable sheet (53) can be pulled to move downward.

7. A stepped shaft inclined surface inspection fixture as claimed in claim 1, characterized in that: Two limiting columns (7) are provided on one side of the parts platform (2) close to the bracket (4), and the two limiting columns (7) are respectively located on two sides of the bracket (4); One end of the movable sheet (53) extends to the top of the part table (2), and the rotating ball (548) is arranged at this end. When the workpiece is between the two limit columns (7), the inclined surface of the workpiece corresponds to the rotating ball (548) in the upper and lower directions.

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