Fixing device for simultaneously measuring radial run-out and end face run-out of main shaft

Abstract

The utility model belongs to the field of measuring tools, and particularly discloses a fixing device for simultaneously measuring radial run-out and end face run-out of a main shaft, which comprises a first main shaft, a connecting disc, a connecting screw rod, a connecting block, a first connecting rod and a second main shaft, the left end face of the first main shaft is provided with a flange plate, and the end face of the flange plate is uniformly provided with a plurality of through holes A; a plurality of taper holes are evenly distributed in the end face of the connecting disc. The flange plate is connected with the connecting plate through a connecting screw rod; the connecting block is mounted on the connecting disc, and the first connecting rod is mounted on the connecting block; one end of the first connecting rod is connected with the second connecting rod, and the other end of the second connecting rod is provided with a dial indicator A; the other end of the first connecting rod is connected with a third connecting rod of which the other end is provided with a dial indicator B; the fixing device is stable and reliable in structure, the length of the measuring rod can be effectively shortened, the measuring precision is improved, the measuring error is reduced, and vibration and noise are reduced when the dynamometer rotates.

Description

Technical Field

[0001] This utility model belongs to the field of measuring tools, specifically relating to a fixing device for simultaneously measuring the radial runout and end face runout of a spindle. Background Technology

[0002] If the motor's main shaft and output shaft are not on the same axis during the installation of the dynamometer, the noise and vibration during high-speed operation will increase. In severe cases, accidents may occur, causing equipment damage and personal injury.

[0003] Current measurement technology typically uses a magnetic meter to measure radial runout and axial runout. However, a magnetic meter can only measure one property at a time. Since there is a certain distance between the motor's main shaft and output shaft, the main shaft needs to be rotated to measure radial runout and axial runout. During rotation, if the measuring rod of the measuring device extends too far, it is very easy for the measuring rod to be displaced under the action of gravity, causing measurement errors. There is an urgent need for a method to solve this problem. Utility Model Content

[0004] To address the problems existing in the background art, this utility model provides a fixing device for simultaneously measuring the radial runout and end face runout of a spindle.

[0005] To achieve the above objectives, this utility model adopts the following technical solution: a fixing device for simultaneously measuring the radial runout and end face runout of a spindle, comprising a first spindle, a connecting plate, a connecting screw, a connecting block, a first connecting rod, and a second spindle. The left end face of the first spindle is provided with a flange, and the end face of the flange is evenly distributed with multiple through holes A. The connecting plate is a disc, and the end face of the connecting plate is evenly distributed with multiple tapered holes. The flange and the connecting plate are connected by a connecting screw. The connecting block is mounted on the connecting plate, and the first connecting rod is mounted on the connecting block. One end of the first connecting rod is connected to one end of a second connecting rod via a first fixing block, and the other end of the second connecting rod is provided with a dial indicator A, the measuring head of which contacts the side wall of the second spindle. The other end of the first connecting rod is connected to one end of a third connecting rod via a second fixing block, and the other end of the third connecting rod is provided with a dial indicator B, the measuring head of which contacts the right end face of the second spindle.

[0006] The connecting screw includes a tapered shaft A, a central shaft A, and a threaded shaft A; the tapered shaft A is adapted to the tapered hole; the left end face of the central shaft A is connected to the right end face of the tapered shaft A, and the left end of the central shaft A is provided with a threaded shaft C, the outer diameter of the central shaft A is larger than the diameter of the through hole A; the outer diameter of the threaded shaft A is smaller than the outer diameter of the through hole A, and the left end face of the threaded shaft A is connected to the right end face of the central shaft A.

[0007] The length of the tapered shaft A is less than the length of the tapered hole.

[0008] The tapered shaft A is fitted into the tapered hole and fixed by the second nut on the threaded shaft C; the threaded shaft A passes through the through hole A and is fixed by the first nut.

[0009] The connecting block is provided with a shaft head, a tapered shaft B, and a threaded shaft B from left to right. The shaft head is cylindrical, with a through hole B on its side wall and a threaded hole on its left end face. The threaded hole is connected to the through hole B and a locking bolt is provided on the threaded hole. The first connecting rod passes through the through hole B and is fixed by the locking bolt. The tapered shaft B is adapted to the tapered hole, passes through the tapered hole, and is fixed by a third nut on the threaded shaft B.

[0010] The through hole A corresponds one-to-one with the tapered hole.

[0011] The beneficial effects of this utility model are as follows: This utility model provides a fixing device for simultaneously measuring the radial runout and end face runout of a spindle. The fixing device has a stable and reliable structure, can effectively shorten the length of the measuring rod, improve the measurement accuracy, reduce the measurement error, and reduce vibration and noise when the dynamometer is rotating. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the present invention.

[0013] Figure 2 This is a schematic diagram showing the connection between the first spindle and the connecting plate.

[0014] Figure 3 This is the main view of the connecting disk.

[0015] Figure 4 This is a side view of the connecting disk.

[0016] Figure 5 This is the front view of the connecting screw.

[0017] Figure 6 This is the main view of the connecting block.

[0018] In the diagram: 1. First spindle, 2. Connecting disc, 3. Connecting screw, 4. Connecting block, 5. Locking bolt, 6. First connecting rod, 7. Second connecting rod, 8. Dial indicator A, 9. Third connecting rod, 10. Dial indicator B, 11. Second spindle, 12. Flange, 13. Through hole A, 14. First nut, 15. Second nut, 16. Third nut, 21. Tapered hole, 31. Tapered shaft A, 32. Central shaft A, 33. Threaded shaft A, 41. Shaft head, 42. Tapered shaft B, 43. Threaded shaft B, 44. Through hole B, 45. Threaded hole, 61. First fixing block, 62. Second fixing block. Detailed Implementation

[0019] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0020] The following is in conjunction with the appendix Figure 1-6 The specific embodiments of this utility model are further described in detail below: A fixing device for simultaneously measuring the radial runout and end face runout of a spindle includes a first spindle 1, a connecting plate 2, a connecting screw 3, a connecting block 4, a first connecting rod 6, and a second spindle 11. The left end face of the first spindle 1 is provided with a flange 12, and the end face of the flange 12 is evenly distributed with multiple through holes A13. The connecting plate 2 is a disc, and the end face of the connecting plate 2 is evenly distributed with multiple tapered holes 21. The through holes A13 correspond one-to-one with the tapered holes 21. In actual use, the structure of the connecting plate 2 and the structure of the flange 12 are... Similar to the connecting plate 2, so as to facilitate connection using connecting screw 3; the flange 12 and the connecting plate 2 are connected by connecting screw 3; the connecting screw 3 includes a tapered shaft A31, a central shaft A32 and a threaded shaft A33; the tapered shaft A31 is adapted to the tapered hole 21; the length of the tapered shaft A31 is less than the length of the tapered hole 21, and when the tapered shaft A31 is installed in the tapered hole 21, neither end of the tapered shaft A31 extends beyond the end face of the connecting plate 2, so as to facilitate the installation of other equipment, for example, a magnetic meter can be attracted to the end face of the connecting plate 2; the left end face of the central shaft A32 is connected to the tapered hole 21. The right end face of the tapered shaft A31 is connected to the left end of the central shaft A32, which has a threaded shaft C. The outer diameter of the central shaft A32 is larger than the diameter of the through hole A13. The outer diameter of the threaded shaft A33 is smaller than the outer diameter of the through hole A13, and the left end face of the threaded shaft A33 is connected to the right end face of the central shaft A32. The length of the connecting screw 3 is adapted to the distance between the flange 12 and the connecting plate 2. The tapered shaft A31 is fitted into the tapered hole 21 and fixed by the second nut 15 on the threaded shaft C. The threaded shaft A33 passes through the through hole A13 and is fixed by the first nut 14. In actual use... To ensure a secure connection between flange 12 and connecting plate 2, at least two connecting bolts 3 are typically required. When installing the connecting bolts 3, first, pass the connecting bolt 3 through the tapered hole 21, then install the second nut 15 on the threaded shaft C at the left end of the central shaft A32; next, pass the threaded shaft A33 through the through hole A13, ensuring the right end face of the central shaft A32 aligns with the left end face of flange 12, then install the first nut 14 at the protruding end of the threaded shaft A33; finally, use tools to tighten the first nut 14 and the second nut 15 to ensure a secure connection between flange 12 and connecting plate 2.

[0021] The connecting block 4 is mounted on the connecting plate 2, and the first connecting rod 6 is mounted on the connecting block 4. The connecting block 4 is provided with a shaft head 41, a tapered shaft B42, and a threaded shaft B43 from left to right. The shaft head 41 is cylindrical, and a through hole B44 is provided on the side wall of the shaft head 41. A threaded hole 45 is provided on the left end face of the shaft head 41, and the threaded hole 45 is connected to the through hole B44. A locking bolt 5 is provided on the threaded hole 45. The first connecting rod 6 passes through the through hole B44 and is fixed by the locking bolt 5. The tapered shaft B42 is adapted to the tapered hole 21, passes through the tapered hole 21, and is fixed by the third nut 16 on the threaded shaft B43. In actual use, in order to make the first connecting rod 6 more stable, two connecting blocks 4 are usually used for fixing. During installation, the first connecting rod 6 is passed through the two connecting blocks 4 in sequence and fixed by locking bolts 5 respectively.

[0022] One end of the first connecting rod 6 is connected to one end of the second connecting rod 7 via the first fixing block 61. The other end of the second connecting rod 7 is equipped with a dial indicator A8, the measuring head of which contacts the side wall of the second spindle 11. The other end of the first connecting rod 6 is connected to one end of the third connecting rod 9 via the second fixing block 62. The other end of the third connecting rod 9 is equipped with a dial indicator B10, the measuring head of which contacts the right end face of the second spindle 11. In this embodiment, two dial indicators are used to simultaneously measure the side wall and end face of the second spindle 11. In actual use, other devices, such as an electronic rangefinder, can also be installed on the first connecting rod 6.

[0023] The usage process of this utility model is as follows: First, select a connecting screw 3 of appropriate length, pass the connecting screw 3 through the tapered hole 21, and then install the second nut 15 on the threaded shaft C at the left end of the central shaft A32; then pass the threaded shaft A33 through the through hole A13, so that the right end face of the central shaft A32 is in contact with the left end face of the flange 12, and then install the first nut 14 on the protruding end of the threaded shaft A33; finally, use tools to tighten the first nut 14 and the second nut 15 to keep the flange 12 and the connecting plate 2 stable; then install the two connecting blocks 4 on the left end face of the connecting plate 2, pass the first connecting rod 6 through the two connecting blocks 4 in sequence, and fix them with locking bolts 5 respectively; finally, install the second connecting rod 7 is installed at one end of the first connecting rod 6, and the other end of the second connecting rod 7 is connected to dial indicator A8, so that the measuring head of dial indicator A8 contacts the side wall of the second spindle 11; the third connecting rod 9 is installed at the other end of the first connecting rod 6, and the other end of the third connecting rod 9 is connected to dial indicator B10, so that the measuring head of dial indicator B10 contacts the right end face of the second spindle 11; after installation, rotating the first spindle 1 allows the radial runout and end face runout values ​​between the first spindle 1 and the second spindle 11 to be observed from dial indicator A8 and dial indicator B10; the position between the first spindle 1 and the second spindle 11 is adjusted by changing the values, so that the coaxiality between the first spindle 1 and the second spindle 11 meets the tolerance requirements.

[0024] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

[0025] The parts of this utility model not described in detail are existing technologies.

Claims

1. A fixing device for simultaneously measuring the radial runout and end face runout of a spindle, comprising a first spindle (1), a connecting plate (2), a connecting screw (3), a connecting block (4), a first connecting rod (6), and a second spindle (11), characterized in that: The left end face of the first spindle (1) is provided with a flange (12), and the end face of the flange (12) is evenly distributed with multiple through holes A (13); the connecting plate (2) is a disc, and the end face of the connecting plate (2) is evenly distributed with multiple tapered holes (21); the flange (12) and the connecting plate (2) are connected by a connecting screw (3); the connecting block (4) is installed on the connecting plate (2), and the first connecting rod (6) is installed on the connecting block (4); the first connecting rod (6) One end of the first connecting rod (6) is connected to one end of the second connecting rod (7) through the first fixing block (61), and the other end of the second connecting rod (7) is provided with a dial indicator A (8), the measuring head of the dial indicator A (8) is in contact with the side wall of the second main shaft (11); the other end of the first connecting rod (6) is connected to one end of the third connecting rod (9) through the second fixing block (62), and the other end of the third connecting rod (9) is provided with a dial indicator B (10), the measuring head of the dial indicator B (10) is in contact with the right end face of the second main shaft (11).

2. The fixing device for simultaneously measuring the radial runout and end face runout of a spindle according to claim 1, characterized in that: The connecting screw (3) includes a tapered shaft A (31), a central shaft A (32), and a threaded shaft A (33); the tapered shaft A (31) is adapted to the tapered hole (21); the left end face of the central shaft A (32) is connected to the right end face of the tapered shaft A (31), the left end of the central shaft A (32) is provided with a threaded shaft C, the outer diameter of the central shaft A (32) is larger than the diameter of the through hole A (13); the outer diameter of the threaded shaft A (33) is smaller than the outer diameter of the through hole A (13), and the left end face of the threaded shaft A (33) is connected to the right end face of the central shaft A (32).

3. The fixing device for simultaneously measuring the radial runout and end face runout of a spindle according to claim 2, characterized in that: The length of the tapered shaft A (31) is less than the length of the tapered hole (21).

4. The fixing device for simultaneously measuring the radial runout and end face runout of a spindle according to claim 3, characterized in that: The tapered shaft A (31) is fitted into the tapered hole (21) and fixed by the second nut (15) on the threaded shaft C; the threaded shaft A (33) passes through the through hole A (13) and is fixed by the first nut (14).

5. The fixing device for simultaneously measuring the radial runout and end face runout of a spindle according to claim 1, characterized in that: The connecting block (4) is provided with a shaft head (41), a tapered shaft B (42) and a threaded shaft B (43) from left to right. The shaft head (41) is a cylinder with a through hole B (44) on its side wall and a threaded hole (45) on its left end face. The threaded hole (45) is connected to the through hole B (44) and a locking bolt (5) is provided on the threaded hole (45). The first connecting rod (6) passes through the through hole B (44) and is fixed by the locking bolt (5). The tapered shaft B (42) is adapted to the tapered hole (21). The tapered shaft B (42) passes through the tapered hole (21) and is fixed by the third nut (16) on the threaded shaft B (43).

6. The fixing device for simultaneously measuring the radial runout and end face runout of a spindle according to claim 1, characterized in that: The through hole A (13) and the tapered hole (21) are in one-to-one correspondence.

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