Shaft body coaxiality detection tool and detection method

Abstract

The invention provides a tool and method for detecting the coaxiality of a shaft body, and belongs to the technical field of tools. The problem that an existing tool cannot detect a shaft body with a cutting groove is solved. The invention discloses a shaft body coaxiality detection tool which comprises a base, a positioning seat, a fixing seat, a driving seat, a driving piece, a shaft sleeve and a pressing piece. The shaft sleeve is installed on the shaft body with the cutting groove, then the driving wheel of the driving piece is used for directly pressing the end of the shaft sleeve and the end of the shaft body on the positioning base, the positioning groove of the left positioning plate abuts against the bottom of the inner ring, the positioning groove of the right positioning plate abuts against the bottom of the outer ring, and therefore positioning installation of the shaft body can be achieved; the driving wheel is only in contact with the shaft sleeve, the left positioning plate is only in contact with the inner ring, the right positioning plate is only in contact with the outer ring, it is guaranteed that the tool avoids the cutting groove in the shaft body, and therefore the tool is suitable for the shaft body with the cutting groove.

Description

Technical Field

[0001] The invention belongs to the technical field of tooling, and relates to a tooling and a method for detecting the coaxiality of a shaft. Background Art

[0002] The shaft is a movable or rotating round object accessory used to connect or assemble various accessories. It is generally made of light and torsion-resistant alloy steel pipe. In the shaft production process, the coaxiality of the shaft is an important parameter. If the coaxiality is out of tolerance, the shaft may be subjected to torque caused by bending moment. The connector that matches the shaft will produce alternating stress during the rotation of the shaft, causing fatigue and fracture of the bolts. Therefore, it is very important to test the coaxiality of the shaft after forming.

[0003] The current method for detecting the coaxiality of the shaft on the market is to limit the side of one end of the shaft and ensure that the shaft can rotate when subjected to tangential force. However, this method has the following disadvantages: 1. When there is a groove on the side of one end of the shaft to be restricted, the tooling used to restrict the side of one end of the shaft cannot contact the surface of the groove during the rotation of the shaft, resulting in the tooling being unable to restrict the shaft, causing inaccurate coaxiality detection of the shaft; 2. When the coaxiality of the shaft is too large and the shaft is in the process of rotation, most of the tooling will not make corresponding shape adjustments as the coaxiality of the shaft changes, which will cause the shaft to be stuck in the tooling, making it impossible to perform shaft inspection. Summary of the invention

[0004] The purpose of the present invention is to address the above-mentioned problems in the prior art and to propose a shaft coaxiality detection tool and detection method that can be applicable to shafts with grooves and can adapt to changes in shaft coaxiality.

[0005] The purpose of the present invention can be achieved through the following technical solutions: A shaft coaxiality detection tool, comprising: A base, wherein a positioning seat is provided on the base; The fixed seat is arranged on the base and is located on one side of the positioning seat. The fixed seat is slidably connected with a driving seat. A driving member is movably inserted in the driving seat. A shaft sleeve is sleeved on the end of the shaft body. A pressing member is threadedly inserted on the driving seat. The pressing member movably passes through the top of the fixed seat and is elastically connected to the top of the fixed seat. The pressing member presses one end of the driving member onto the shaft sleeve.

[0006] In the above-mentioned shaft coaxiality detection tool, a top plate is provided on the top of the fixed seat, and the pressing part includes a screw, one end of which moves through the top plate, a spring is sleeved on the screw, a limiting ring is installed on the screw, and the spring is located between the top plate and the limiting ring.

[0007] In the above-mentioned shaft coaxiality detection tool, a sliding block is provided on one side surface of the driving seat, a guide rail slidably connected to the sliding block is provided on the fixed seat, and a hand wheel is provided on the top of the screw.

[0008] In the above-mentioned shaft coaxiality detection tool, the driving member includes a driving wheel and a driving disk, and the driving wheel and the driving disk are connected through a driving shaft, wherein the driving shaft passes through a driving seat, and the driving wheel and the driving disk are respectively located on both sides of the driving seat.

[0009] In the above-mentioned shaft coaxiality detection tool, a left positioning plate and a right positioning plate are provided on the positioning seat, a sleeve groove for the shaft sleeve to be embedded is provided between the left positioning plate and the right positioning plate, and positioning grooves are provided on both the left positioning plate and the right positioning plate.

[0010] In the above-mentioned shaft coaxiality detection tooling, a groove is provided on the side surface of one end of the shaft, and the shaft is provided with an inner ring and an outer ring on both sides of the groove, wherein the inner ring is movably clamped in the positioning groove of the left positioning plate, and the outer ring is movably clamped in the positioning groove of the right positioning plate.

[0011] In the above-mentioned shaft coaxiality detection tool, a limit member is provided on the base, and the limit member includes a limit seat provided on the base, a limit rod is provided on the limit seat, and the limit rod is against one end face of the shaft.

[0012] In the above-mentioned shaft coaxiality detection tooling, the limit seat is provided with a limit plate for installing the limit rod, the limit seat is provided with a limit groove for installing the limit plate, the limit plate and the limit seat are connected by a limit bolt, and the limit plate is provided with a waist hole for the limit bolt to pass through.

[0013] In the above-mentioned shaft coaxiality detection tooling, a support seat is provided on the base, a support plate for supporting the shaft is provided on the support seat, a support groove is provided on the support plate, and the shaft is located on the support groove; a slide rail is provided on the base, and a detection seat is slidably connected to the slide rail.

[0014] A detection method of the shaft coaxiality detection tool according to the above-mentioned method comprises the following steps: Step 1: Install the sleeve on the end of the shaft body with the groove; Step 2: Rotate the pressing piece to lift the driving seat to a predetermined height; Step 3, install the end of the shaft body with the shaft sleeve on the positioning seat, and make the inner ring on the shaft body movably clamped in the positioning groove of the left positioning plate, and the outer ring of the shaft body movably clamped in the positioning groove of the right positioning plate; Step 4: Rotate the pressing member in the opposite direction to lower the driving seat relative to the fixed seat until the driving wheel of the driving member abuts against the shaft sleeve; Step 5: Continue to rotate the pressed piece in the opposite direction, the driving seat is stationary relative to the fixed seat, the screw moves upward relative to the fixed seat, and the spring is compressed to increase the force of the driving wheel on the shaft sleeve; Step 6: Rotate the drive member. The drive wheel of the drive member drives the sleeve and the shaft to rotate. The micrometer installed on the detection seat detects the coaxiality of the shaft.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. In the present invention, the shaft sleeve is installed on the shaft body with the groove, and then the shaft sleeve and the end of the shaft body are directly pressed on the positioning seat by the driving wheel of the driving member, and the positioning groove of the left positioning plate is ensured to abut the bottom of the inner ring, and the positioning groove of the right positioning plate is ensured to abut the bottom of the outer ring, so that the positioning installation of the shaft body can be realized. When the driving wheel of the driving member rotates, the driving wheel only contacts the shaft sleeve, the left positioning plate only contacts the inner ring, and the right positioning plate only contacts the outer ring. In this way, it can be ensured that the tool avoids the groove on the shaft body, so that the tool is suitable for the shaft body with the groove; 2. When the coaxiality of the shaft is tested and the coaxiality of the shaft deviates, the sleeve will float up and down during the rotation, and the pressing part will compensate for the floating distance to ensure that the sleeve and the shaft are always pressed on the positioning seat during the rotation of the shaft, ensuring that the shaft can be stably tested; in addition, it can also ensure that the driving part always has sufficient force to press the shaft and the sleeve on the positioning seat. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of a preferred embodiment of the present invention.

[0017] Figure 2 It is a combination diagram of the shaft body and the sleeve.

[0018] Figure 3 It is a combination diagram of a base, a support seat, a positioning seat and a limit piece.

[0019] Figure 4 It is a combination diagram of a fixed seat, a pressed part and a driving part.

[0020] Figure 5 It is a structural diagram of a limiter.

[0021] In the figure, the base 100; the supporting seat 110; the supporting plate 111; the supporting groove 112; the sliding rail 120; the detecting seat 121; the positioning seat 200; the left positioning plate 210; the right positioning plate 220; the sleeve groove 230; the positioning groove 240; the fixing seat 300; the top plate 310; the guide rail 320; the driving seat 400; the sliding block 410; the driving member 500; the driving wheel 510; the driving disk 520; the driving shaft 530; the sleeve 600; the shaft body 700; the cutting groove 710; the inner ring 720; the outer ring 730; the pressing member 800; the screw rod 810; the spring 820; the limiting ring 830; the handwheel 840; the limiting member 900; the limiting groove 911; the limiting seat 910; the limiting rod 920; the limiting plate 930; the waist hole 931; the limiting bolt 940. DETAILED DESCRIPTION

[0022] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0023] like Figure 1 — Figure 4 As shown, a shaft coaxiality detection tool of the present invention includes a base 100, a positioning seat 200, a fixing seat 300, a driving seat 400, a driving member 500, a sleeve 600 and a pressing member 800.

[0024] A positioning seat 200 is provided on the base 100, a fixed seat 300 is provided on the base 100 and is located on one side of the positioning seat 200, a driving seat 400 is slidably connected to the fixed seat 300, a driving member 500 is movably inserted in the driving seat 400, a sleeve 600 is sleeved on the end of the shaft body 700, a pressing member 800 is threadedly inserted on the driving seat 400, the pressing member 800 movably passes through the top of the fixed seat 300 and is elastically connected to the top of the fixed seat 300, the pressing member 800 presses one end of the driving member 500 on the sleeve 600, a slide rail 120 is provided on the base 100, and a detection seat 120 is slidably connected to the slide rail 120 1. Before testing the coaxiality of the shaft body 700, it is necessary to install a micrometer (not marked in the figure) on the testing seat 121, install the sleeve 600 on one end of the shaft body 700, and rotate the pressing piece 800 to lift the driving seat 400 relative to the fixed seat 300 to a predetermined height, so that the end of the shaft body 700 with the sleeve 600 can be smoothly stuck on the positioning seat 200, and then, install the end of the shaft body 700 with the sleeve 600 on the positioning seat 200, and then, rotate the pressing piece 800 in the opposite direction to make the driving seat 400 descend relative to the fixed seat 300 until one end of the driving member 500 abuts against the sleeve 600, and continue to rotate the pressing piece 800 in the opposite direction. At this time, the sleeve 600 will limit the downward movement of the driving member 500, that is, the driving seat 400 will be stationary relative to the fixed seat 300 at this time, and the pressing member 800 will move through the top of the fixed seat 300, so that the pressing member 800 moves upward relative to the fixed seat 300, and the elastic force between the pressing member 800 and the fixed seat 300 will increase. Because the pressing member 800 and the driving seat 400 are threadedly connected, the driving member 500 moves through the driving seat 400, and the central axis of the driving member 500 and the moving trajectory of the driving seat 400 are perpendicular to each other. In this way, the force of the driving member 500 on the sleeve 600 can be effectively increased, that is, the sleeve 600 and the shaft body 700 are always On the pressed positioning seat 200, when people drive the driving member 500 to rotate relative to the driving seat 400, the driving member 500 will drive the sleeve 600 and the shaft body 700 to rotate synchronously, and when the coaxiality of the shaft body 700 deviates, the sleeve 600 will also float up and down during the rotation. At the same time, the driving member 500, the driving seat 400 and the pressing member 800 will also float up and down synchronously. Because the pressing member 800 is elastically connected to the fixed seat 300, the pressing member 800 will compensate for the floating distance to ensure that during the rotation of the shaft body 700, the sleeve 600 and the shaft body 700 are always pressed on the positioning seat 200, ensuring that the shaft body 700 can be stably detected.

[0025] The positioning seat 200 is provided with a left positioning plate 210 and a right positioning plate 220, and a sleeve groove 230 for the sleeve 600 to be embedded is provided between the left positioning plate 210 and the right positioning plate 220, and a positioning groove 240 is provided on the left positioning plate 210 and the right positioning plate 220, and a groove 710 is provided on the side surface of one end of the shaft body 700, and the shaft body 700 is respectively provided with an inner ring 720 and an outer ring 730 on both sides of the groove 710, wherein the inner ring 720 is movably clamped in the positioning groove 240 of the left positioning plate 210, and the outer ring 730 is movably clamped in the positioning groove 240 of the right positioning plate 220. During detection, People need to install the sleeve 600 on the end of the shaft body 700 with the groove 710, and make the inner ring 720 and the outer ring 730 located on both sides of the sleeve 600 respectively. After that, the end of the shaft body 700 with the sleeve 600 is placed on the positioning seat 200, and the sleeve 600 is partially inserted into the sleeve groove 230, the bottom of the inner ring 720 is located in the positioning groove 240 of the left positioning plate 210, and the outer ring 730 is partially located in the positioning groove 240 of the right positioning plate 220. After that, adjust the pressing piece 800 so that one end of the driving piece 500 applies a force to the sleeve 600, so that the left positioning plate can be moved. The positioning groove 240 of the left positioning plate 210 abuts against the bottom of the inner ring 720, and the positioning groove 240 of the right positioning plate 220 abuts against the bottom of the outer ring 730. In this way, the positioning of the shaft body 700 can be completed, and the inner ring 720 always sticks to the positioning groove 240 of the left positioning plate 210, and the outer ring 730 always abuts against the positioning groove 240 of the right positioning plate 220 during the rotation of the shaft body 700. That is, the rotation positioning of the shaft body 700 during the rotation process can be achieved. Here, it can be reflected that the detection tooling can be applied to the shaft body 700 with the cut groove 710; in addition, when the bottom of the sleeve 600 is stuck in the sleeve groove 230, the outer ring 730 is always pressed against the positioning groove 240 of the right positioning plate 220. When the shaft sleeve 600 is in contact with the left positioning plate 210 or the right positioning plate 220, the inner ring 720 is still stuck in the positioning groove 240 of the left positioning plate 210, and the outer ring 730 is still stuck in the positioning groove 240 of the right positioning plate 220.

[0026] A top plate 310 is provided on the top of the fixing seat 300, and the pressing member 800 includes a screw rod 810, one end of which movably passes through the top plate 310, a spring 820 is sleeved on the screw rod 810, and a limiting ring 830 is installed on the screw rod 810, and the spring 820 is located between the top plate 310 and the limiting ring 830, and a hand wheel 840 is provided on the top of the screw rod 810. When one end of the driving member 500 abuts against the shaft sleeve 600 and the driving seat 400 is to be lifted, people need to turn the hand wheel 840 because the end of the screw rod 810 is in contact with the shaft sleeve 600. The hand wheel 840 is fixedly connected, and the screw rod 810 will also rotate accordingly. Because the screw rod 810 thread passes through the driving seat 400, the screw rod 810 is not connected to the top plate 310. At this time, there is elastic force between the limit ring 830 and the top plate 310, and the screw rod 810 will move downward relative to the driving seat 400. When the bottom of the hand wheel 840 abuts against the top plate 310, the top plate 310 will limit the hand wheel 840 and the screw rod 810 from continuing to move downward. At this time, the screw rod 810 will move the driving seat 400 upward relative to the fixed seat 300. In this way, the driving seat 400 and the driving seat 400 can be moved upward. The component 500 is lifted to a predetermined height so that the sleeve 600 and the shaft body 700 can be smoothly placed on the positioning seat 200; when the sleeve 600 and the shaft body 700 are to be pressed on the positioning seat 200, people need to rotate the hand wheel 840 in the opposite direction, and the screw rod 810 will rotate in the opposite direction, so that the screw rod 810 pushes the driving seat 400 to descend relative to the fixed seat 300, and in this process, the top plate 310 blocks the hand wheel 840 from descending, and the screw rod 810 is subjected to the elastic force of the spring 820 and the gravity of the driving seat 400, so that the screw rod 810 cannot It will rise and fall relative to the top plate 310, and when the end of the driving member 500 abuts against the sleeve 600, the driving seat 400 will not continue to descend. At this time, the screw 810 will rise relative to the fixed seat 300. At the same time, because the spring 820 is always stuck between the top plate 310 and the limit ring 830, the spring 820 will be compressed. In this way, the pressing force of the driving member 500 on the sleeve 600 and the shaft body 700 can be increased, thereby ensuring that the driving member 500 can smoothly drive the sleeve 600 and the shaft body 700 to rotate, and can also achieve the positioning of the shaft body 700.

[0027] Furthermore, the shaft body 700 and the sleeve 600 are connected by a bolt (not marked in the figure). The provision of the bolt can ensure that the sleeve 600 will not move relative to the shaft body 700, and can also ensure that the sleeve 600 and the shaft body 700 can move synchronously. Furthermore, the head of the bolt is embedded in the interior of the shaft body 700 and the sleeve 600. In this way, the contact between the driving member 500 and the bolt can be avoided, thereby ensuring that the driving member 500 can smoothly drive the sleeve 600 to rotate.

[0028] A slider 410 is provided on one side surface of the driving seat 400, and a guide rail 320 slidably connected to the slider 410 is provided on the fixed seat 300. When working, the slider 410 moves along the guide rail 320 to ensure that the driving seat 400 can be directional lifted and lowered along the track of the guide rail 320.

[0029] The driving member 500 includes a driving wheel 510 and a driving disk 520, wherein the driving wheel 510 and the driving disk 520 are connected via a driving shaft 530, wherein the driving shaft 530 passes through the driving seat 400, and the driving wheel 510 and the driving disk 520 are respectively located on both sides of the driving seat 400. During operation, the driving wheel 510 contacts the shaft sleeve 600 and there is a certain force between the two, so that when people rotate the driving disk 520, the driving wheel 510 will drive the shaft sleeve 600 and the shaft body 700 to rotate at the same time. During this process, the coaxiality of the shaft body 700 can be detected by a micrometer installed on the detection seat 121.

[0030] like Figure 5 As shown, a limit member 900 is provided on the base 100, and the limit member 900 includes a limit seat 910 provided on the base 100, and a limit rod 920 is provided on the limit seat 910. When people want to clamp one end of the shaft body 700 with the sleeve 600 on the positioning seat 200, it is necessary to press the end face of the shaft body 700 located on the sleeve 600 against the limit rod 920 to achieve the positioning installation of the end of the shaft body 700. Secondly, through the setting of the limit rod 920, it is also prevented that the shaft body 700 moves toward the limit rod 920 during the rotation process.

[0031] A limiting plate 930 for installing a limiting rod 920 is provided on the limiting seat 910, and a limiting groove 911 for installing the limiting plate 930 is provided on the limiting seat 910. The limiting plate 930 and the limiting seat 910 are connected by a limiting bolt 940, and a waist hole 931 is provided on the limiting plate 930 for the limiting bolt 940 to pass through. A limiting hole corresponding to the limiting rod 920 is provided at the end face of the shaft body 700 (not marked in the figure). When positioning the end of the shaft body 700, people can appropriately adjust the installation position of the limiting plate 930 in the limiting groove 911 according to the diameter of the end face of the shaft body 700, so that the limiting rod 920 can resist the limiting hole at the end of the shaft body 700, thereby completing the positioning of the end of the shaft body 700.

[0032] like Figure 1 — Figure 3As shown, when one end of the shaft body 700 with the shaft sleeve 600 is placed on the positioning seat 200 and the other end of the shaft body 700 is suspended, because the shaft body 700 has a certain length and a certain weight, the shaft body 700 will be tilted relative to the base, and finally the end of the shaft body 700 away from the shaft sleeve 600 will contact the base 100. In the present invention, a support seat 110 is provided on the base 100, and the support seat 110 is provided with a support plate for supporting the shaft body 700 111, a supporting groove 112 is provided on the supporting plate 111, and the supporting groove 112 is used to support one end of the shaft body 700 away from the sleeve 600 to reduce the inclination of the shaft body 700. When the driving wheel 510 presses the sleeve 600, because the distance between the positioning groove 240 and the base 100 is greater than the distance between the supporting groove 112 and the base 100, the shaft body 700 will be separated from the supporting groove 112 to prevent the inner wall of the supporting groove 112 from interfering with the rotating shaft body 700.

[0033] The following is a detection method of a shaft 700 coaxiality detection tool, including the following steps: Step 1, install the sleeve 600 on one end of the shaft body 700 having the slot 710, and make the inner ring 720 and the outer ring 730 located on both sides of the sleeve 600 respectively; Step 2, turn the hand wheel 840 of the pressing member 800, and the screw rod 810 will rotate synchronously with the hand wheel 840. Because the screw rod 810 passes through the driving seat 400, the screw rod 810 is not connected to the top plate 310. At this time, there is elastic force between the limit ring 830 and the top plate 310, and the screw rod 810 will move downward relative to the driving seat 400. When the bottom of the hand wheel 840 abuts against the top plate 310, the top plate 310 will limit the hand wheel 840 and the screw rod 810 from moving downward. At this time, the screw rod 810 will move the driving seat 400 upward relative to the fixed seat 300. In this way, the driving seat 400 and the driving member 500 can be lifted to a predetermined height, so that the sleeve 600 and the shaft body 700 can be smoothly placed on the positioning seat 200; Step 3, install one end of the shaft body 700 with the shaft sleeve 600 on the positioning seat 200. Specifically, it is necessary to partially insert the shaft sleeve 600 into the sleeve groove 230, and make the bottom of the inner ring 720 movably clamped on the positioning groove 240 of the left positioning plate 210, and the bottom of the outer ring 730 movably clamped on the positioning groove 240 of the right positioning plate 220. In this process, the other end of the shaft body 700 needs to be placed on the support groove 112 to avoid direct contact between the shaft body 700 and the base 100; Step 4: Reversely rotate the hand wheel 840 of the pressing member 800, and the screw rod 810 will reversely rotate, so that the screw rod 810 pushes the driving seat 400 to descend relative to the fixing seat 300 until the driving wheel 510 abuts against the shaft sleeve 600. During this process, the top plate 310 blocks the hand wheel 840 from descending, and the screw rod 810 is subjected to the elastic force of the spring 820 and the gravity of the driving seat 400, so that the screw rod 810 will not rise or fall relative to the top plate 310. Step 5, when the driving wheel 510 is against the shaft sleeve 600 and the hand wheel 840 is continuously rotated in the opposite direction, the driving seat 400 will not continue to descend, and at this time, the screw rod 810 will rise relative to the fixed seat 300. At the same time, because the spring 820 is always stuck between the top plate 310 and the limiting ring 830, the spring 820 will be compressed, so that the pressing force of the driving wheel 510 on the shaft sleeve 600 and the shaft body 700 can be increased, that is, the friction force between the shaft sleeve 600 and the driving wheel 510 is effectively increased, thereby ensuring that the driving member 500 can smoothly drive the shaft sleeve 600 and the shaft body 700 to rotate, and also ensuring that the inner ring 720 is in contact with the positioning groove 240 of the left positioning plate 210, and the outer ring 730 is in contact with the positioning groove 240 of the right positioning plate 220, that is, the positioning of the shaft body 700 is achieved; Step 6: Rotate the driving plate 520 of the driving member 500 , and the driving wheel 510 drives the sleeve 600 and the shaft body 700 to rotate, and the micrometer installed on the detection seat 121 detects the coaxiality of the shaft body 700 .

[0034] Through the detection method of the above-mentioned detection tooling, the coaxiality of the shaft body 700 with the groove 710 can be detected. Secondly, when the coaxiality of the shaft body 700 is detected and the coaxiality of the shaft body 700 deviates, the sleeve 600 will also float up and down during the rotation process, and the pressing part 800 will compensate for the floating distance to ensure that the sleeve 600 and the shaft body 700 are always pressed on the positioning seat 200 during the rotation of the shaft body 700, ensuring that the shaft body 700 can be stably detected; in addition, it can also ensure that the driving part 500 always has sufficient force to press the shaft body 700 and the sleeve 600 on the positioning seat 200.

[0035] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0036] In addition, in the present invention, descriptions such as "first", "second", "one", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0037] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0038] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

Claims

1. A tool for detecting the coaxiality of a shaft, characterized in that: include: A base, wherein a positioning seat is provided on the base; The fixed seat is arranged on the base and is located on one side of the positioning seat. The fixed seat is slidably connected with a driving seat. A driving member is movably inserted in the driving seat. A shaft sleeve is sleeved on the end of the shaft body. A pressing member is threadedly inserted on the driving seat. The pressing member movably passes through the top of the fixed seat and is elastically connected to the top of the fixed seat. The pressing member presses one end of the driving member onto the shaft sleeve.

2. A shaft coaxiality detection tool according to claim 1, characterized in that: A top plate is provided on the top of the fixing seat, and the pressing piece includes a screw rod, one end of which movably passes through the top plate, a spring is sleeved on the screw rod, a limiting ring is installed on the screw rod, and the spring is located between the top plate and the limiting ring.

3. A shaft coaxiality detection tool according to claim 2, characterized in that: A sliding block is arranged on one side surface of the driving seat, a guide rail slidably connected to the sliding block is arranged on the fixing seat, and a hand wheel is arranged on the top of the screw rod.

4. The shaft coaxiality detection tool according to claim 1, characterized in that: The driving member comprises a driving wheel and a driving disc, wherein the driving wheel and the driving disc are connected via a driving shaft, wherein the driving shaft passes through a driving seat, and the driving wheel and the driving disc are respectively located on two sides of the driving seat.

5. The shaft coaxiality detection tool according to claim 1, characterized in that: The positioning seat is provided with a left positioning plate and a right positioning plate, a sleeve groove for the shaft sleeve to be embedded is provided between the left positioning plate and the right positioning plate, and the left positioning plate and the right positioning plate are both provided with positioning grooves.

6. A shaft coaxiality detection tool according to claim 5, characterized in that: A groove is provided on the side surface of one end of the shaft body, and an inner ring and an outer ring are respectively provided on both sides of the groove of the shaft body, wherein the inner ring is movably clamped in the positioning groove of the left positioning plate, and the outer ring is movably clamped in the positioning groove of the right positioning plate.

7. The shaft coaxiality detection tool according to claim 1, characterized in that: The base is provided with a limiting member, and the limiting member comprises a limiting seat arranged on the base, and a limiting rod is arranged on the limiting seat, and the limiting rod is against one end surface of the shaft body.

8. A shaft coaxiality detection tool according to claim 7, characterized in that: The limiting seat is provided with a limiting plate for installing the limiting rod, the limiting seat is provided with a limiting groove for installing the limiting plate, the limiting plate and the limiting seat are connected by limiting bolts, and the limiting plate is provided with a waist hole for the limiting bolt to pass through.

9. The shaft coaxiality detection tool according to claim 1, characterized in that: The base is provided with a support seat, the support seat is provided with a support plate for supporting the shaft body, the support plate is provided with a support groove, and the shaft body is located on the support groove; the base is provided with a slide rail, and the slide rail is slidably connected with a detection seat.

10. A method for detecting the coaxiality of a shaft, applied to the detection tool for the coaxiality of a shaft as claimed in any one of claims 1 to 9, characterized in that: The following steps are involved: Step 1: Install the sleeve on the end of the shaft body with the groove; Step 2: Rotate the pressing piece to lift the driving seat to a predetermined height; Step 3, install the end of the shaft body with the shaft sleeve on the positioning seat, and make the inner ring on the shaft body movably clamped in the positioning groove of the left positioning plate, and the outer ring of the shaft body movably clamped in the positioning groove of the right positioning plate; Step 4: Rotate the pressing member in the opposite direction to lower the driving seat relative to the fixed seat until the driving wheel of the driving member abuts against the shaft sleeve; Step 5: Continue to rotate the pressed piece in the opposite direction, the driving seat is stationary relative to the fixed seat, the screw moves upward relative to the fixed seat, and the spring is compressed to increase the force of the driving wheel on the shaft sleeve; Step 6: Rotate the drive member. The drive wheel of the drive member drives the sleeve and the shaft to rotate. The micrometer installed on the detection seat detects the coaxiality of the shaft.

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