Straightness measuring instrument for measuring driving shaft

Abstract

The utility model belongs to the technical field of measuring instruments, and particularly relates to a straightness measuring instrument for measuring a driving shaft, which comprises a base, rotating shaft tables are symmetrically arranged on two sides of the top of the base respectively, a rhombic folding frame is arranged in each rotating shaft table, a guide block is hinged to each of four hinge points of each rhombic folding frame, and the guide blocks are arranged on the rotating shaft tables. The upper guide block and the lower guide block are slidably arranged at the two ends of the vertical guide rail respectively, and the left guide block and the right guide block are slidably arranged at the two ends of the transverse guide rail respectively. The left guide block and the right guide block are each provided with a supporting shaft, one guide block is rotationally provided with a screw rod, and one end of the screw rod is in threaded connection with and penetrates through the other guide block and then penetrates out of the rotating shaft table. A linear guide rail is arranged on the base, a universal support is slidably arranged on the linear guide rail, and a dial indicator is arranged at the tail end of the universal support. Compared with the prior art, the straightness measuring instrument is simple and practical in structure, easy to operate, higher in efficiency and lower in cost.

Description

Technical Field

[0001] The utility model belongs to the technical field of measuring instruments, and particularly relates to a straightness measuring instrument for measuring a drive shaft. Background Art

[0002] At present, the straightness measurement of the drive shaft uses a three-coordinate measuring machine. Due to the high purchase price of the three-coordinate measuring machine and the requirement for the professionalism of the operator, the measurement cost of the drive shaft is too high and the measurement efficiency is too low. Therefore, there is a certain market demand for designing a straightness measuring machine for drive shaft measurement that has a simple and practical structure and can be quickly operated. Summary of the invention

[0003] In view of the above-mentioned deficiencies in the prior art, the utility model provides a straightness measuring instrument for measuring a drive shaft, which has a simple structure and is practical, to solve the above-mentioned problems.

[0004] The utility model discloses a straightness measuring instrument for measuring a driving shaft, comprising a base, a rotating shaft platform symmetrically arranged on both sides of the top of the base, each of the rotating shaft platforms is provided with a diamond folding frame, the diamond folding frame comprises four hinge points, each hinge point is hinged with a guide block, every two symmetrical guide blocks form a group, each of the rotating shaft platforms is provided with a vertical guide rail and a transverse guide rail, two guide blocks of one group are respectively slidably arranged at the two ends of the vertical guide rail, and two guide blocks of the other group are respectively slidably arranged at the two ends of the transverse guide rail; a supporting shaft is respectively arranged on the two guide blocks located in the transverse guide rail, and a screw is rotatably arranged on one of the guide blocks, one end of the screw is screwed and passes through the other guide block and then passes through the rotating shaft platform, a linear guide rail is arranged on the base, a universal bracket is slidably arranged on the linear guide rail, and a micrometer is arranged at the end of the universal bracket.

[0005] Furthermore, a plurality of guide shafts penetrating the rotating shaft platform and parallel to the linear guide rail are arranged on both sides of the base, a shaft sleeve adapted to the guide shaft is arranged on both sides of the rotating shaft platform, a locking mechanism is arranged between the rotating shaft platform and the guide shaft, and the base is slidably connected to the rotating shaft platform.

[0006] Furthermore, each of the rotating shaft platforms is provided with a scale in the middle of the two supporting shafts.

[0007] Furthermore, a level is provided on the base.

[0008] Furthermore, a lifting platform is slidably provided on the detection rod, a second locking mechanism is provided between the lifting platform and the detection rod, and the universal bracket is provided on the lifting platform.

[0009] Furthermore, a rocking wheel is provided at one end of the screw rod, and a rotating handle is provided on the rocking wheel.

[0010] Furthermore, the linear guide rail is a T-shaped guide rail, and a T-shaped sliding block adapted to the T-shaped guide rail is provided at the bottom of the detection rod.

[0011] Compared with the existing technology, the straightness measuring instrument has a simple and practical structure, is easy to use, has higher efficiency and lower cost. In addition, in addition to being able to measure the straightness of traditional drive shafts, it can also achieve the straightness measurement requirements of drive shafts with steps by separately adjusting the distance between two support shafts on any rotating shaft table. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0013] Figure 2 It is a front cross-sectional view of the utility model;

[0014] Figure 3 It is a top view of the utility model.

[0015] In the figure: 1. base; 2. rotating shaft table; 3. diamond folding frame; 4. guide block; 5. vertical guide rail; 6. horizontal guide rail; 7. support shaft; 8. screw; 9. linear guide rail; 10. universal bracket; 11. micrometer; 12. guide shaft; 13. bushing; 14. locking mechanism; 15. scale; 16. spirit level; 17. detection rod; 18. lifting platform; 19. second locking mechanism; 20. driving shaft. DETAILED DESCRIPTION

[0016] In order to better understand the present invention, Figures 1 to 3 The implementation modes of the present utility model will be explained in detail.

[0017] It should be noted that the directions "front, back, left, right, up, down" mentioned in the text are all based on Figure 1 The directions of “front, back, left, right, up, and down” are used as the basis.

[0018] See also Figures 1 to 3The utility model is a straightness measuring instrument for measuring a drive shaft, comprising a base 1, wherein a rotating shaft platform 2 is symmetrically arranged on both sides of the top of the base 1, and a rhombus folding frame 3 is arranged in each of the rotating shaft platforms 2, wherein the rhombus folding frame 3 comprises four hinge points, namely, upper, lower, left and right, and a guide block 4 is hinged on each hinge point, and every two symmetrical guide blocks 4 form a group, and each of the rotating shaft platforms 2 is provided with a vertical guide rail 5 and a transverse guide rail 6 cooperating with the guide block 4, wherein two guide blocks 4 (up and down directions) of one group are respectively slidably arranged at the two ends of the vertical guide rail 5, and two guide blocks 4 (left and right directions) of another group are respectively slidably arranged at the two ends of the transverse guide rail 6; located The two guide blocks 4 (left and right directions) in the transverse guide rail 6 are set as support seats, and a rotatable support shaft 7 is respectively set on the two support seats, and a screw rod 8 is rotatably set on the guide block 4 on the right side, and one end of the screw rod 8 is screwed and penetrates the other guide block 4 on the left side and then passes through the rotating shaft table 2; a linear guide rail 9 is set on the base 1, and a universal bracket 10 is slidably set on the linear guide rail 9, and a micrometer 11 is set at the end of the universal bracket 10. After the probe of the micrometer 11 contacts the surface of the driving shaft 20, the driving shaft 20 is rotated and the universal bracket 10 is slid, and the straightness of the driving shaft 20 is detected according to the change of the index on the micrometer 11.

[0019] By rotating the screw 8 forward or backward, the left guide block 4 screwed on the screw 8 can be moved laterally in the transverse guide rail 6, so that the diamond folding frame 3 can be laterally expanded or folded, and the hinged left and right guide blocks 4 can simultaneously drive the rotating shaft table 2 to adjust the spacing. Since the spacing between the support shafts 7 on the two rotating shaft tables 2 can be adjusted separately, in addition to being able to measure the straightness of ordinary drive shafts 20, the straightness measuring instrument can also achieve the straightness measurement requirements of the drive shaft 20 with steps by adjusting the spacing between the two support shafts 7 on any rotating shaft table 2 separately.

[0020] The preferred technical solution in this embodiment is as follows Figure 3 As shown in, taking into account the different lengths of drive shafts 20 of different models, in order to meet the testing requirements of drive shafts 20 of various lengths, a plurality of guide shafts 12 are arranged on both sides of the base 1, which penetrate the rotating shaft platform 2 and are parallel to the linear guide rail 9. A shaft sleeve 13 adapted to the guide shaft 12 is arranged on both sides of the rotating shaft platform 2. A locking mechanism 14 is arranged between the rotating shaft platform 2 and the guide shaft 12, and the base 1 is slidably connected to the rotating shaft platform 2; by controlling the tightness of the locking mechanism 14, the connection state of the two rotating shaft platforms 2 in the guide shaft 12 can be controlled. When any locking mechanism 14 is in a loose state, the corresponding rotating shaft platform 2 can freely adjust its position on the guide shaft 12, and after the position is fixed by the locking state of the locking mechanism 14, the distance between the two rotating shaft platforms 2 can be adjusted.

[0021] The preferred technical solution in this embodiment is as follows Figure 3 As shown in FIG. 1 , in order to facilitate adjustment of the spacing between the two support shafts 7 , each of the rotating shaft platforms 2 is provided with a scale 15 at the middle of the two support shafts 7 .

[0022] The preferred technical solution in this embodiment is as follows Figure 3 As shown in FIG. 1 , a level 16 is provided on the base 1 .

[0023] The preferred technical solution in this embodiment is as follows Figure 1 and Figure 2 As shown in , a lifting platform 18 is slidably arranged on the detection rod 17 , a second locking mechanism 19 is arranged between the lifting platform 18 and the detection rod 17 , and the universal bracket 10 is arranged on the lifting platform 18 .

[0024] In the preferred technical solution of this embodiment, the locking mechanism 14 and the second locking mechanism 19 use a tightening bolt, and a knob handle is provided at the end of the tightening bolt.

[0025] In the preferred technical solution of the present embodiment, for the convenience of operation, a rocking wheel is provided at one end of the screw rod 8, and a rotating handle is provided on the rocking wheel.

[0026] The preferred technical solution in this embodiment is as follows Figure 2 As shown in , the linear guide rail 9 is a T-shaped guide rail, and a T-shaped sliding block adapted to the T-shaped guide rail is provided at the bottom of the detection rod 17.

[0027] In summary, compared with the prior art, the straightness measuring instrument has a simple and practical structure, is easy to use, has higher efficiency and lower detection cost.

[0028] The electrical components mentioned in this article are all connected to an external main controller and 220V mains electricity, and the main controller can be a conventional known device for controlling a computer or the like.

[0029] In the description of the present utility model, it should be understood that the terms "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In the description of the present utility model, unless otherwise specified and limited, it should be noted that the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a mechanical connection or an electrical connection, or it can be the internal communication of two elements, it can be a direct connection, or it can be an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0030] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A straightness measuring instrument for measuring a drive shaft, characterized in that: The invention comprises a base (1), wherein two rotating shaft platforms (2) are symmetrically arranged on the top sides of the base (1), each of the rotating shaft platforms (2) is provided with a rhombus-shaped folding frame (3), the rhombus-shaped folding frame (3) comprises four hinge points, each of which is hinged with a guide block (4), and each two symmetrical guide blocks (4) form a group, and each of the rotating shaft platforms (2) is provided with a vertical guide rail (5) and a horizontal guide rail (6), wherein the two guide blocks (4) of one group are respectively slidably arranged at the two ends of the vertical guide rail (5), and the two guide blocks (4) of the other group are respectively slidably arranged at the two ends of the vertical guide rail (5), and the two guide blocks (6) of the other group are respectively slidably arranged at the two ends of the vertical guide rail (5). The guide blocks (4) are respectively slidably arranged at the two ends of the transverse guide rail (6); a support shaft (7) is respectively arranged on the two guide blocks (4) located in the transverse guide rail (6), and a screw rod (8) is rotatably arranged on one of the guide blocks (4), one end of the screw rod (8) is screwed and passes through the other guide block (4) and then passes out of the rotating shaft table (2); a linear guide rail (9) is arranged on the base (1), a universal bracket (10) is slidably arranged on the linear guide rail (9), and a micrometer (11) is arranged at the end of the universal bracket (10).

2. A straightness measuring instrument for measuring a drive shaft as claimed in claim 1, characterized in that: A plurality of guide shafts (12) penetrating the rotating shaft platform (2) and parallel to the linear guide rail (9) are arranged on both sides of the base (1); a shaft sleeve (13) adapted to the guide shaft (12) is arranged on both sides of the rotating shaft platform (2); a locking mechanism (14) is arranged between the rotating shaft platform (2) and the guide shaft (12); and the base (1) is slidably connected to the rotating shaft platform (2).

3. A straightness measuring instrument for measuring a drive shaft as claimed in claim 1, characterized in that: Each of the rotating shaft platforms (2) is provided with a scale (15) at the middle of the two supporting shafts (7).

4. A straightness measuring instrument for measuring a drive shaft as claimed in claim 1, characterized in that: A level (16) is provided on the base (1).

5. A straightness measuring instrument for measuring a drive shaft as claimed in claim 1, characterized in that: The linear guide rail (9) is a T-shaped guide rail, on which a matching T-shaped slide block is arranged, and the bottom of the detection rod (17) is arranged on the T-shaped slide block.

6. A straightness measuring instrument for measuring a drive shaft as claimed in claim 5, characterized in that: A lifting platform (18) is slidably arranged on the detection rod (17), a second locking mechanism (19) is arranged between the lifting platform (18) and the detection rod, and the universal bracket (10) is arranged on the lifting platform (18).

7. A straightness measuring instrument for measuring a drive shaft as claimed in claim 1, characterized in that: A rocking wheel is provided at one end of the screw rod (8), and a rotating handle is provided on the rocking wheel.

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