Shaft sleeve flatness and roundness detection table

Abstract

The utility model relates to the technical field of tolerance detection, in particular to a shaft sleeve planeness and roundness detection table, which comprises a detection platform and a dial indicator, a shaft sleeve is lapped on the top of the detection platform, a gauge head of the dial indicator is lapped on the outer surface of the shaft sleeve, three threaded holes are arranged on the top of the detection platform, and the threaded holes are in threaded connection with the shaft sleeve. And bolts are in threaded connection with the interiors of the three threaded holes. When the shaft sleeve is clamped through the dial indicator and the ball bearing in the prior art, if the two end faces of the shaft sleeve are not perpendicular to the outer circle and the inner hole, and the size cannot be measured, but after the shaft sleeve is actually installed on the shaft, the two end faces of the shaft sleeve are inclined, and workpieces on the two sides are clamped, the shaft sleeve is inclined, so that the size cannot be measured. And a gap is formed between the sealing ring and an external mechanical seal, so that the material leakage phenomenon is caused. And after the shaft sleeve is vertically placed and is detected by the dial indicator, the material leakage condition caused by the shaft sleeve hardly exists.

Description

Technical Field

[0001] The utility model relates to the technical field of tolerance detection, in particular to a shaft sleeve flatness and roundness detection table. Background Art

[0002] When various pump machines are manufactured, they need to be sealed by pump sealing sleeves. The pump sealing sleeves have dimensional tolerances and position tolerances that need to be inspected. The position tolerances of the sleeves include flatness and roundness.

[0003] During inspection, the dimensional tolerance of the sleeve is mostly checked. Some existing equipment is not convenient for checking the type and position tolerance of the sleeve, resulting in less type and position tolerance inspection. After the pump sealing sleeve is installed, it is easy to cause material leakage and wear the main shaft of the pump. Utility Model Content

[0004] In order to facilitate the detection of the type and position tolerance of the shaft sleeve, the utility model provides a shaft sleeve flatness and roundness detection table.

[0005] The shaft sleeve flatness and roundness detection platform provided by the utility model adopts the following technical solutions:

[0006] The shaft sleeve flatness and roundness detection platform comprises a detection platform and a dial indicator, wherein the shaft sleeve is overlapped on the top of the detection platform, the dial indicator head is overlapped on the outer surface of the shaft sleeve, and three threaded holes are opened on the top of the detection platform, and bolts are threadedly connected inside the three threaded holes.

[0007] By adopting the above technical solution, the detection platform for checking the flatness and roundness is composed of a standard platform, three special bolts and three ball bearings. The dial indicator head is pressed against the outer surface of the sleeve, that is, the outer circle, to detect the roundness of the sleeve. The dial indicator head is pressed against the upper end face of the sleeve to detect the flatness of the sleeve, thereby avoiding the connection between the sleeve and the pump whose two end faces are not perpendicular to the outer circle and the inner hole, which will cause leakage.

[0008] Preferably, the outer surface of each bolt is rotatably connected to a ball bearing, and the outer surfaces of the corresponding ball bearings overlap the surface of the sleeve.

[0009] Preferably, each of the bolts includes a head, a gasket, a smooth rod and a screw rod, and the head, smooth rod and screw rod of each bolt are fixedly connected in sequence from top to bottom, each gasket is sleeved on the outer surface of the corresponding smooth rod, the outer surface of each screw rod is threadedly connected to the inside of the corresponding threaded hole, and the outer surface of each smooth rod is rotatably connected to the inside of the corresponding ball bearing.

[0010] By adopting the above technical solution, the bolt is equivalent to the fixed axis of the ball bearing, the outer ring of the ball bearing can rotate freely, and the end face of the sleeve is placed on the platform surface. According to the diameter of the sleeve, the ball bearing either rotates on the outer circle or on the inner hole.

[0011] Preferably, the shaft sleeve is vertically placed on the top of the detection platform, the bottom plate of the shaft sleeve is in close contact with the top of the detection platform, and the dial indicator head overlaps the top of the shaft sleeve.

[0012] Preferably, the sleeve is vertically placed on the top of the detection platform, the inner surface of the sleeve overlaps the outer surface of the corresponding ball bearing, and the dial indicator head overlaps the outer surface of the sleeve.

[0013] Preferably, the sleeve is vertically placed on the top of the detection platform, the outer surface of the sleeve overlaps the outer surface of the corresponding ball bearing, and the dial indicator head overlaps the outer surface of the sleeve.

[0014] By adopting the above technical scheme, different specifications of sleeves are limited by dial indicators and bolts, and the dial indicator head is pressed against the outer surface of the sleeve, that is, the outer circle of the sleeve, to detect the roundness of the sleeve. The dial indicator head is pressed against the upper end face of the sleeve to detect the flatness of the sleeve.

[0015] In summary, the utility model has the following beneficial technical effects:

[0016] 1. This device clamps the sleeve with the ball bearing through a dial indicator. Compared with the original method of only checking the sleeve size tolerance, if the two end faces of the sleeve are not perpendicular to the outer circle and the inner hole, the size measurement will not reveal the problem. However, after it is actually installed on the shaft, the two end faces of the sleeve are inclined. After the workpieces on both sides are clamped, the sleeve will tilt, and there will be a gap between it and the external mechanical seal, which will cause leakage. After the sleeve is placed vertically and tested by the dial indicator, there is almost no leakage caused by the sleeve.

[0017] 2. The device is provided with bolts and ball bearings. The outer ring of the ball bearing can rotate freely. The end face of the sleeve is placed on the platform surface. According to the diameter of the sleeve, it can be rotated on the outer circle or the inner hole. Then the dial indicator base is sucked onto the detection platform and the position of the dial indicator head is adjusted. The head is placed on the outer circle to detect the roundness of the sleeve. The head is placed on the upper end face of the sleeve to detect the flatness of the sleeve. The detection speed is fast and the detection structure has high accuracy. It is also conducive to the simultaneous detection of multiple sleeves of different specifications or the same specifications. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional diagram of the shaft sleeve flatness and roundness testing platform of the utility model;

[0019] Figure 2It is a top view of the shaft sleeve flatness and roundness testing platform of the utility model;

[0020] Figure 3 yes Figure 1 A schematic diagram of the enlarged local structure at point A in the middle;

[0021] Figure 4 It is a structural schematic diagram of the bolts in the shaft sleeve flatness and roundness detection platform of the utility model;

[0022] Figure 5 It is a top view of a bolt in the shaft sleeve flatness and roundness detection platform of the utility model.

[0023] Description of reference numerals:

[0024] 1. Inspection platform; 2. Bushing; 21. Large bushing; 22. Medium bushing; 23. Small bushing; 3. Dial indicator;

[0025] 4. Bolt; 41. Head; 42. Washer; 43. Smooth rod; 44. Screw; 5. Ball bearing. DETAILED DESCRIPTION

[0026] The following is combined with Figure 1-5 The utility model is described in further detail.

[0027] The utility model embodiment discloses a shaft sleeve flatness and roundness detection platform.

[0028] Reference Figure 1 , 2 , 3, including a detection platform 1 and a dial indicator 3 (known technology), the detection platform 1 adopts a standard horizontal and vertical platform, the top of the detection platform 1 is overlapped with a sleeve 2, the sleeve 2 adopts a round tube, the sleeves have different sizes and specifications, and can be roughly divided into a large sleeve 21, a medium-sized sleeve 22 and a small sleeve 23. According to the size of the sleeve 2, the top of the detection platform 1 includes at least three special bolts 4 and three ball bearings 5. The head of the dial indicator 3 is overlapped on the outer surface of the sleeve 2. Three threaded holes are opened on the top of the detection platform 1. Several threaded holes can be opened on the top of the detection platform 1, so as to be connected with multiple bolts 4, and then the flatness and roundness of multiple sleeves 2 can be checked at the same time. Part of the bolts 4 can also be used to fix the sleeve 2 for checking the flatness, and another part of the bolts 4 can be used to fix the sleeve 2 for checking the roundness. The insides of the three threaded holes are all threadedly connected with bolts 4.

[0029] Reference Figure 1 , 23. The outer surface of each bolt 4 is rotatably connected with a ball bearing 5. The outer surfaces of the corresponding ball bearings 5 ​​are overlapped on the surface of the sleeve 2. The three ball bearings 5 ​​are fixed on the platform with three special bolts 4. The bolts 4 are equivalent to the fixed axis of the ball bearings 5. The outer ring of the ball bearings 5 ​​can rotate freely. The end face of the sleeve 2 is placed on the platform surface. According to the diameter of the sleeve 2, it can be rotated on the outer circle or on the inner hole. Then, the base of the dial indicator 3 is sucked onto the detection platform 1, and the position of the dial indicator 3 head is adjusted. The head is on the outer circle to detect the roundness of the sleeve 2, and the head is on the upper end face of the sleeve 2 to detect the flatness of the sleeve 2.

[0030] Reference Figure 3 , 4 , 5. Each bolt 4 includes a head 41, a gasket 42, a smooth rod 43 and a screw 44. The bolt 4 is a special bolt. The diameter of the screw 44 is smaller than the diameter of the smooth rod 43. The gasket 42 is located between the head 41 and the smooth rod 43. The gasket 42 can be screwed downward with the head 41 to limit the movement of the ball bearing 5 in the vertical direction, so as to prevent the ball bearing 5 from being affected by the kinetic energy of the sleeve 2 when the sleeve 2 moves, resulting in a large up and down movement. The head 41, the smooth rod 43 and the screw 44 of each bolt 4 are fixedly connected in sequence from top to bottom, and each gasket 42 is sleeved on the outer surface of the corresponding smooth rod 43.

[0031] Reference Figure 1 , 3 4. The outer surface of each screw rod 44 is threadedly connected to the inside of the corresponding threaded hole. The outer surface of each smooth rod 43 is rotatably connected to the inside of the corresponding ball bearing 5. The position of the dial indicator 3 head is adjusted. When the head is on the outer circle, the roundness of the sleeve 2 can be detected. When the head is on the upper end surface of the sleeve 2, the flatness of the sleeve 2 can be detected.

[0032] Reference Figure 1 , 3 The shaft sleeve 2 is placed vertically on the top of the detection platform 1. When the shaft sleeve 2 is vertical, its bottom is locked to the top of the detection platform 1 by the corresponding bolts 4. When the shaft sleeve 2 is large, multiple bolts 4 are used. When it is small, one or two bolts 4 are used. It is also possible to simultaneously use multiple dial indicators 3 on the detection platform to detect shaft sleeves 2 of different sizes or multiple shaft sleeves 2. The head of the dial indicator 3 overlaps the top of the shaft sleeve 2. The dial indicator 3 detects the flatness of the shaft sleeve 2 at this time, and the bottom plate of the shaft sleeve 2 is close to the top of the detection platform 1.

[0033] Reference Figure 1 , 3 The sleeve 2 is placed vertically on the top of the detection platform 1. When the roundness of the large sleeve 21 and the medium sleeve 22 is detected, the inner surface of the sleeve 2 overlaps the outer surface of the corresponding ball bearing 5. The sleeve 2 is located between the dial indicator 3 and the ball bearing 5, and the head of the dial indicator 3 overlaps the outer surface of the sleeve 2.

[0034] Reference Figure 2 The sleeve 2 is placed vertically on the top of the detection platform 1, the outer surface of the sleeve 2 overlaps the outer surface of the corresponding ball bearing 5, and the head of the dial indicator 3 overlaps the outer surface of the sleeve 2. When the roundness of the small sleeve 23 is detected, the outer surfaces of the two ball bearings 5 ​​overlap the outer surface of the small sleeve 23, the two ball bearings 5 ​​are located on one side of the small sleeve 23, the dial indicator 3 is located on the other side of the small sleeve 23 and between the two ball bearings 5, and the gap between the two ball bearings 3 and the head of the dial indicator 3 is used to clamp and lock the small sleeve 23.

[0035] The implementation principle of the shaft sleeve flatness and roundness detection platform of the utility model embodiment is:

[0036] 1. When the sleeve 2 is placed vertically, the bolt 4 is inserted into the bottom of the sleeve 2, and the sleeve 2 is locked to the top of the detection platform 1 through the ball bearing 5, and then the flatness of the end face of the sleeve 2 is detected by the dial indicator 3;

[0037] 2. When the sleeve 2 is placed vertically, inspect the small sleeve 23, put the bolt 4 into the outside of the sleeve, and the ball bearing 5 is in contact with the outer surface of the small sleeve 23. The roundness of the sleeve 2 is inspected by the dial indicator 3. When inspecting the medium-sized sleeve 22 and the large sleeve 21, put a plurality of bolts 4 into the interior of the sleeve 2 according to the inner diameter of the sleeve 2. At this time, the outer surface of the ball bearing 5 is in contact with the interior of the sleeve 2. The sleeve 2 is clamped by the dial indicator 3 and the ball bearing 5, so that the roundness of the sleeve 2 is inspected by the dial indicator 3.

[0038] The above are all preferred embodiments of the present utility model, and are not intended to limit the protection scope of the present utility model. Therefore, any equivalent changes made based on the structure, shape, and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. Bushing flatness and roundness testing table, Features: The invention comprises a detection platform (1) and a dial indicator (3), wherein the top of the detection platform (1) is overlapped with a shaft sleeve (2), the head of the dial indicator (3) is overlapped with the outer surface of the shaft sleeve (2), and three threaded holes are opened on the top of the detection platform (1), and bolts (4) are threadedly connected inside the three threaded holes.

2. The sleeve flatness and roundness testing platform according to claim 1, Features: The outer surface of each bolt (4) is rotatably connected to a ball bearing (5), and the outer surfaces of the corresponding ball bearings (5) overlap the surface of the shaft sleeve (2).

3. The sleeve flatness and roundness testing platform according to claim 2, Features: Each of the bolts (4) comprises a head (41), a washer (42), a smooth rod (43) and a screw rod (44); the head (41), the smooth rod (43) and the screw rod (44) of each of the bolts (4) are fixedly connected in sequence from top to bottom, and each of the washer (42) is sleeved on the outer surface of the corresponding smooth rod (43).

4. The sleeve flatness and roundness testing platform according to claim 3, Features: The outer surface of each screw rod (44) is threadedly connected to the inside of a corresponding threaded hole, and the outer surface of each smooth rod (43) is rotationally connected to the inside of a corresponding ball bearing (5).

5. The sleeve flatness and roundness testing platform according to claim 4, Features: The shaft sleeve (2) is vertically placed on the top of the detection platform (1), the bottom plate of the shaft sleeve (2) is closely attached to the top of the detection platform (1), and the dial indicator (3) is overlapped with the top of the shaft sleeve (2).

6. The sleeve flatness and roundness testing platform according to claim 4, Features: The shaft sleeve (2) is vertically placed on the top of the detection platform (1), the inner surface of the shaft sleeve (2) overlaps the outer surface of the corresponding ball bearing (5), and the dial indicator (3) is overlapped on the outer surface of the shaft sleeve (2).

7. The sleeve flatness and roundness testing platform according to claim 4, Features: The shaft sleeve (2) is vertically placed on the top of the detection platform (1), the outer surface of the shaft sleeve (2) overlaps the outer surface of the corresponding ball bearing (5), and the dial indicator (3) has a gauge head overlapped on the outer surface of the shaft sleeve (2).

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