CN216954351U - Measuring tool for measuring angle of taper hole of input shaft - Google Patents

Abstract

The utility model provides an input shaft taper hole angle measuring tool, which comprises a frame body and a detection part arranged on the frame body, wherein the frame body comprises an input shaft supporting plate with an input shaft positioning hole and a detection part mounting plate which is arranged above the input shaft supporting plate in parallel and is provided with a detection part mounting hole, and an introduction groove is formed in the input shaft supporting plate; the detection part comprises a core bar matched in a mounting hole of the detection part, a dial indicator fixing plate fixedly arranged on the core bar and positioned below the mounting plate of the detection part, a dial indicator arranged on the dial indicator fixing plate, a fixed disc concentrically and fixedly arranged at the lower end of the core bar and vertical to the core bar, and a movable disc concentrically penetrating the core bar and parallel to the fixed disc, the lower end face of the movable disc abuts against the upper end face of the fixed disc, the diameter of the movable disc is larger than that of the fixed disc, and the lower end of the measuring bar abuts against the upper end face of the movable disc. Due to the adoption of the technical scheme, the utility model has the advantages of simple structure and low production cost.

Description

Measuring tool for measuring angle of taper hole of input shaft

Technical Field

The utility model belongs to the technical field of taper hole angle measuring devices, and particularly relates to an input shaft taper hole angle measuring tool.

Background

As shown in fig. 1, an input shaft 1 includes a shaft rod 11, a step section 12 concentrically fixed at an end of the shaft rod 11, a taper hole seat 13 concentrically fixed at an end of the step section 12, and a taper hole 14 concentrically fixed at a middle portion of the taper hole seat 13, wherein a plane 15 perpendicular to an axis of the input shaft is disposed at a side of the taper hole seat 13 near the step section.

When the input shaft is produced, the angle of the taper hole needs to be ensured to have higher precision, and if the angle deviation of the taper hole is too large, the input shaft is an unqualified product. Therefore, in the process of producing the input shaft, the taper hole angle detection is an essential step, and the existing instrument for measuring the taper hole angle is expensive, high in cost and complex in measuring method.

SUMMERY OF THE UTILITY MODEL

Aiming at the technical problems in the prior art, the utility model provides an input shaft taper hole angle measuring tool.

The utility model aims at realizing the purpose through the technical scheme, which comprises a frame body and a detection part arranged on the frame body, wherein the frame body comprises an input shaft supporting plate with an input shaft positioning hole and a detection part mounting plate which is arranged above the input shaft supporting plate in parallel and is provided with a detection part mounting hole; the detection part comprises a core bar matched in a mounting hole of the detection part, a dial indicator fixing plate fixedly arranged on the core bar and positioned below the mounting plate of the detection part, a dial indicator arranged on the dial indicator fixing plate and with a downward measuring rod, a fixed disc concentrically and fixedly arranged at the lower end of the core bar and vertical to the core bar, and a movable disc concentrically penetrating the core bar and parallel to the fixed disc, wherein the lower end face of the movable disc is abutted against the upper end face of the fixed disc, the diameter of the movable disc is larger than that of the fixed disc, and the lower end of the measuring rod is abutted against the upper end face of the movable disc.

Further, the detection part mounting plate is provided with a core rod fixing part for fixing the core rod on the detection part mounting plate, the core rod fixing part comprises a core rod fixing cylinder which is coaxially arranged with the detection part mounting hole, a screw hole formed in the side wall of the core rod fixing cylinder and a bolt screwed in the screw hole, and the screwing-in end of the bolt abuts against the core rod.

Further, the bolt is a butterfly bolt.

Furthermore, the detection part also comprises a handle arranged at the upper end of the core rod.

Furthermore, an expansion section is formed at one end of the input shaft guide groove, which is positioned at the edge of the input shaft support plate, and the expansion section opens towards the edge of the input shaft support plate to form a splayed shape.

Due to the adoption of the technical scheme, the utility model has the beneficial effects that:

when the measuring tool for measuring the taper hole angle of the input shaft is manufactured, the aperture of the positioning hole of the input shaft is matched with the diameter of the stage on the input shaft. When the input shaft taper hole angle measuring tool is used, the core rod is lifted upwards, the detection part avoids the installation position of the input shaft, and the dial indicator is zeroed. An input shaft (named as a standard input shaft in the following description) with a taper hole with a standard angle is prepared, the taper hole on the standard input shaft faces upwards, the standard input shaft enters the input shaft positioning hole from the edge of the input shaft supporting plate through the input shaft guiding groove until the table stage is matched in the input shaft positioning hole, and the plane on the standard input shaft is supported on the upper side face of the input shaft supporting plate. The detection part moves downwards, the core bar moves downwards under the guiding action of the installation hole of the detection part, and the dial indicator, the fixed disc and the movable disc move downwards along with the core bar. In the process that the detection part moves downwards, because the diameter of the movable disk is larger than that of the fixed disk, the edge of the movable disk is firstly supported on the hole wall of the taper hole of the standard input shaft, after the edge of the movable disk is supported on the hole wall of the taper hole of the standard input shaft, the core rod, the dial indicator and the fixed disk continue to move downwards until the edge of the fixed disk is supported on the hole wall of the taper hole of the standard input shaft, the reading of the dial indicator at the moment is recorded, and the dial indicator is zeroed. Then the detecting part can be moved upwards, and the standard input shaft is taken out from the input shaft supporting plate through the input shaft guide groove. And then the input shaft to be detected is installed on the input shaft supporting plate according to the mode, so that the detection part moves downwards, the core rod moves downwards under the guiding action of the detection part installing hole, and the dial indicator, the fixed disc and the movable disc move downwards along with the core rod. In the process that the detection part moves downwards, because the diameter of the movable disk is larger than that of the fixed disk, the edge of the movable disk is firstly supported on the hole wall of the taper hole of the detected input shaft, after the edge of the movable disk is supported on the hole wall of the taper hole of the detected input shaft, the core rod, the dial indicator and the fixed disk continue to move downwards until the edge of the fixed disk is supported on the hole wall of the taper hole of the detected input shaft, the reading of the dial indicator at the moment is recorded, the difference value between the radius of the movable disk and the radius of the fixed disk is brought into a tangent trigonometric function, the sum of the reading of the dial indicator when the standard input shaft is measured, the reading of the dial indicator when the detected input shaft is measured and the thickness of the fixed disk is also brought into the tangent trigonometric function, namely, the taper hole angle of the detected input shaft can be obtained, and the taper hole angle of the detected input shaft is compared with the taper hole angle of the standard input shaft, that is, whether the detected input shaft is qualified or not can be judged. The measuring tool for measuring the taper hole angle of the input shaft has the advantages of simple structure, low production cost and convenience in measuring the taper hole angle. Because the input shaft positioning hole and the detection part mounting hole are arranged with the same axial line, the core rod is matched with the detection part mounting hole, the stage on the input shaft is matched with the input shaft positioning hole, the movable disc and the fixed disc are both arranged concentrically with the core rod, and the movable disc and the fixed disc are both perpendicular to the core rod, during detection, the axial line of the movable disc and the axial line of the fixed disc cannot incline with the axial line of the taper hole, so that the measurement result is accurate.

Drawings

FIG. 1 is a schematic structural view of an input shaft;

FIG. 2 is a schematic structural diagram of an input shaft taper angle measuring tool according to the present invention;

FIG. 3 is a cross-sectional view A-A of FIG. 2;

FIG. 4 is a schematic structural view of the frame of FIG. 2;

FIG. 5 is a schematic view showing the structure of the detecting part in FIG. 2;

FIG. 6 is a schematic view of the core rod securing portion of FIG. 2;

FIG. 7 is a state diagram of an input shaft taper angle measuring gauge of the present invention.

In the figure, 1, an input shaft; 11. a shaft lever; 12. a stage of stage; 13. a taper hole seat; 14. a taper hole; 15. a plane; 2. a frame body; 3. a detection unit; 21. an input shaft support plate; 22. a detection part mounting plate; 211. an input shaft positioning hole; 212. the input shaft is guided into the groove; 213. an expansion section; 31. a core bar; 32. a dial indicator fixing plate; 33. a dial indicator; 34. fixing the disc; 35. a movable disc; 36. a handle; 23. a first support leg; 24. a second support leg; 4. a core bar fixing part; 41. a core bar fixing cylinder; 42. a screw hole; 43. and (4) bolts.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the utility model easy to understand, the utility model is further explained below by combining the specific drawings.

As shown in fig. 2, the present invention includes a frame body 2 and a detection part 3, wherein the detection part 3 is disposed on the frame body 2.

As shown in fig. 3 and 4, the frame body 2 includes an input shaft support plate 21 and a detection portion mounting plate 22, the input shaft support plate 21 has an input shaft positioning hole 211, the detection portion mounting plate 22 is disposed in parallel above the input shaft support plate 21, the detection portion mounting plate 22 has a detection portion mounting hole (not shown in the figure), and the detection portion mounting hole is disposed coaxially with the input shaft positioning hole 211. An input shaft guide groove 212 is formed in the input shaft support plate 21, one end of the input shaft guide groove 212 is communicated with the input shaft positioning hole 211, and the other end of the input shaft guide groove 212 is communicated with the edge of the input shaft support plate 21. An enlarged section 213 is formed at one end of the input shaft guide groove 212 located at the edge of the input shaft support plate 21, and the enlarged section 213 is splayed toward the edge of the input shaft support plate 21. The enlarged section 213 is formed by enlarging the end of the input shaft guide groove 212, and the width of the large end is larger than the width of the input shaft guide groove 212, so that the enlarged section 213 facilitates the input shaft to be guided into the input shaft guide groove 212.

The support body 2 further comprises four first support legs 23 fixedly arranged on the lower side surface of the input shaft support plate 21 and used for horizontally supporting the input shaft support plate 21 and four second support legs 24 arranged between the detection part mounting plate 22 and the input shaft support plate 21 and used for supporting the detection part mounting plate 22 in parallel above the input shaft support plate 21. It is understood that in some embodiments, the number of the first supporting legs 23 may be three or more, and it is only necessary to ensure that the first supporting legs 23 can jointly and horizontally support the input shaft supporting plate 21. In some embodiments, second support legs 24 may be provided in other numbers than three, as long as each second support leg 24 is capable of supporting detection unit mounting plate 22 in parallel above input shaft support plate 21.

As shown in fig. 5, the detecting part 3 includes a core bar 31, a dial indicator 33, a dial indicator fixing plate 32, a dial indicator 33, a fixed disc 34 and a movable disc 35, the core bar 31 is fitted in the detecting part mounting hole, the dial indicator fixing plate 32 is fixedly disposed on the core bar 31, the dial indicator fixing plate 32 is located below the detecting part mounting plate 22, the dial indicator 33 is disposed on the dial indicator fixing plate 32, the measuring bar of the dial indicator 33 faces downward, the fixed disc 34 is concentrically and fixedly disposed at the lower end of the core bar 31, the fixed disc 34 is perpendicular to the core bar 31, the movable disc 35 concentrically penetrates through the core bar 31, that is, a through hole matched with the core bar 31 is disposed in the middle of the movable disc 35, the core bar 31 is disposed in the through hole, and the movable disc 35 can move up and down relative to the core bar 31. The movable disk 35 is parallel to the fixed disk 34, i.e. the movable disk 35 is also perpendicular to the core rod 31. The lower end face of the movable disc 35 abuts against the upper end face of the fixed disc 34, the diameter of the movable disc 35 is larger than that of the fixed disc 34, and the lower end of the measuring rod abuts against the upper end face of the movable disc 35. The detection part 3 further comprises a handle 36, and the handle 36 is arranged at the upper end of the core rod 31. The handle 36 is convenient to hold and move the core rod 31 up and down, and the core rod 31 is more convenient to move.

As shown in fig. 2 and 6, the detection unit mounting plate 22 has a core rod fixing portion 4, the core rod fixing portion 4 is used for fixing the core rod 31 to the detection unit mounting plate 22, the core rod fixing portion 4 includes a core rod fixing cylinder 41, a screw hole 42, and a bolt 43, the core rod fixing cylinder 41 is fixed to the detection unit mounting plate 22, the core rod fixing cylinder 41 and the detection unit mounting hole are coaxially arranged, the screw hole 42 is formed in a side wall of the core rod fixing cylinder 41, the bolt 43 is a butterfly bolt 43, and the bolt 43 can be conveniently rotated without using a wrench, but in other embodiments, the bolt 43 may be an outer hexagon bolt 43. The bolt 43 is screwed into the screw hole 42, and the screwing end of the bolt 43 abuts against the core rod 31. By rotating the bolt 43 in the screw hole 42, the screw-in end of the bolt 43 is pressed against the stem 31, so that the stem 31 is fixed to the detecting unit mounting plate 22 and the stem 31 cannot move up and down on the detecting unit mounting plate 22. The bolt 43 is turned to separate the screw-in end of the bolt 43 from the core rod 31, at this time, the core rod 31 loses the fixation of the bolt 43, and the core rod 31 can move up and down in the detection unit mounting hole, that is, the detection unit 3 can move up and down at this time.

The use principle is as follows: as shown in fig. 7, when the input shaft taper angle measuring gauge of the present invention is manufactured, the diameter of the input shaft positioning hole 211 is matched with the diameter of the stage 12 on the input shaft 1. When the input shaft taper hole angle measuring tool is used, the bolt 43 is loosened from the core rod, the core rod 31 is lifted upwards, the detection part 3 avoids the installation position of the input shaft 1, then the bolt 43 is rotated, the screwing end of the bolt 43 is abutted against the core rod 31, and the dial indicator 33 is zeroed. An input shaft with a taper hole with a standard angle, namely a standard input shaft, is prepared, the taper hole on the standard input shaft faces upwards, the standard input shaft enters the input shaft positioning hole 211 from the edge of the input shaft supporting plate 21 through the expanding section 213 and the input shaft guide groove 212 in sequence until the stage 12 is matched in the input shaft positioning hole 211, and the plane 15 on the standard input shaft is supported on the upper side surface of the input shaft supporting plate 21. The bolt 43 is loosened from the stem 31 to move the sensing part 3 downward, the stem 31 is moved downward by the guide of the sensing part mounting hole, and the dial indicator 33, the fixed disk 34 and the movable disk 35 are moved downward along with the stem 31. During the downward movement of the detection part 3, the diameter of the movable disc 35 is larger than that of the fixed disc 34, the edge of the movable disc 35 is firstly supported on the hole wall of the taper hole 14 of the standard input shaft, after the edge of the movable disc 35 is supported on the hole wall of the taper hole 14 of the standard input shaft, the core bar 31, the dial indicator 33 and the fixed disc 34 continue to move downward until the edge of the fixed disc 34 is supported on the hole wall of the taper hole 14 of the standard input shaft 1, the reading of the dial indicator 33 at this time is recorded, and the dial indicator 33 is zeroed. Then, the detecting part 3 can be moved upward, and the standard input shaft can be taken out from the input shaft supporting plate 21 through the input shaft introducing groove 212 and the enlarged section 213. Then, the input shaft to be detected is mounted on the input shaft support plate 21 in the above manner, the detection part 3 is moved downward, the core bar 31 is moved downward by the guide of the detection part mounting hole 211, and the dial indicator 33, the fixed disc 34 and the movable disc 35 are moved downward along with the core bar 31. During the downward movement of the detection part 3, since the diameter of the movable disk 35 is larger than that of the fixed disk 34, the edge of the movable disk 35 is firstly supported on the hole wall of the taper hole 14 of the detected input shaft, after the edge of the movable disk 35 is supported on the hole wall of the taper hole 14 of the detected input shaft, the stem 31, the dial gauge 33 and the fixed disk 34 continue to move downward until the edge of the fixed disk 34 is supported on the hole wall of the taper hole 14 of the detected input shaft, the reading at this time of the dial gauge 33 is recorded, the sum of the reading of the dial gauge 33 at the time of the standard input shaft, the reading of the dial gauge 33 at the time of the detected input shaft and the thickness of the fixed disk 34 is also taken into the tangent trigonometric function by taking the difference between the radius of the movable disk and the radius of the fixed disk into the tangent trigonometric function, and the angle of the taper hole 14 of the detected input shaft can be obtained, and comparing the detected taper hole angle of the input shaft with the taper hole angle of the standard input shaft, namely judging whether the detected input shaft is qualified. The measuring tool for measuring the angle of the taper hole of the input shaft is simple in structure, low in production cost and convenient to measure the angle of the taper hole 14. Because the input shaft positioning hole 211 and the detection part mounting hole are arranged coaxially, the core rod 31 is matched with the detection part mounting hole, the stage 12 on the input shaft is matched with the input shaft positioning hole 211, the movable disc 35 and the fixed disc 34 are both arranged concentrically with the core rod 31, the movable disc 35 and the fixed disc 34 are both perpendicular to the core rod 31, and during detection, the axial lead of the movable disc 35 and the axial lead of the fixed disc 34 cannot incline with the axial lead of the taper hole 14, so that the measurement result is accurate.

The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all equivalent structures made by using the contents of the present specification and the drawings can be directly or indirectly applied to other related technical fields, and are within the scope of the present invention.

Claims (5)

1. The utility model provides an input shaft taper hole angle measurement measuring tool which characterized in that: the frame body comprises an input shaft support plate with an input shaft positioning hole and a detection part mounting plate which is arranged above the input shaft support plate in parallel and is provided with a detection part mounting hole, the detection part mounting hole and the input shaft positioning hole are arranged coaxially, and an input shaft guide groove with one end communicated with the input shaft positioning hole and the other end communicated with the edge of the input shaft support plate is formed in the input shaft support plate; the detection part comprises a core bar matched in a mounting hole of the detection part, a dial indicator fixing plate fixedly arranged on the core bar and positioned below the mounting plate of the detection part, a dial indicator arranged on the dial indicator fixing plate and with a downward measuring rod, a fixed disc concentrically and fixedly arranged at the lower end of the core bar and vertical to the core bar, and a movable disc concentrically penetrating the core bar and parallel to the fixed disc, wherein the lower end face of the movable disc is abutted against the upper end face of the fixed disc, the diameter of the movable disc is larger than that of the fixed disc, and the lower end of the measuring rod is abutted against the upper end face of the movable disc.

2. An input shaft taper angle measuring gauge according to claim 1, wherein: the detection part mounting plate is provided with a core rod fixing part for fixing the core rod on the detection part mounting plate, the core rod fixing part comprises a core rod fixing cylinder arranged coaxially with the detection part mounting hole, a screw hole formed in the side wall of the core rod fixing cylinder and a bolt screwed in the screw hole, and the screwing-in end of the bolt abuts against the core rod.

3. An input shaft taper angle measuring gauge according to claim 2, wherein: the bolts are butterfly bolts.

4. An input shaft taper angle measuring gauge according to claim 1, wherein: the detection part also comprises a handle arranged at the upper end of the core rod.

5. An input shaft taper angle measuring gauge according to claim 1, wherein: and an expansion section is formed at one end of the input shaft guide groove, which is positioned at the edge of the input shaft support plate, and the expansion section opens towards the edge of the input shaft support plate to form a splayed shape.

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