Nut perpendicularity measuring device

Abstract

The utility model provides a nut perpendicularity measuring device, and belongs to the technical field of measuring instruments. The problem that in the prior art, the perpendicularity of the end face of a nut relative to the axis of the nut is difficult to measure is solved. The nut perpendicularity measuring device comprises a positioning seat, the positioning seat is provided with a cylindrical flat rotating seat which can horizontally rotate relative to the positioning seat, the flat rotating seat is provided with a plurality of fixing parts used for positioning nuts of different specifications at intervals in the axial direction, and the positioning seat is provided with a lever indicator which can move up and down relative to the positioning seat and is locked. And the lever indicator is adjacent to the flat rotating seat. The device has the advantage that the perpendicularity of the end face of the nut relative to the axis of the nut can be quickly measured.

Description

Technical Field

[0001] The utility model belongs to the technical field of measuring instruments and relates to a nut verticality measuring device. Background Art

[0002] The verticality of the two end faces of the nut relative to its axis will directly affect the performance of the fastener connection. If the verticality tolerance is large, a gap will be generated between the nut and the washer when the bolt and nut are connected, which will cause safety hazards during the use of the bolt and nut. However, since the end face of the nut is relatively small, it is impossible to directly measure the verticality with a right-angle gauge, so there is an urgent need for a device that can quickly measure the verticality of the nut end face relative to its axis. Summary of the invention

[0003] The purpose of the utility model is to solve the above problems in the existing technology and propose a nut verticality measuring device. The technical problem to be solved by the utility model is how to quickly measure the verticality of the nut end face relative to its axis.

[0004] The purpose of the utility model can be achieved through the following technical solutions:

[0005] A nut verticality measuring device includes a positioning seat, characterized in that a columnar flat rotating seat which can rotate horizontally relative to the positioning seat is provided on the positioning seat, a plurality of fixing parts for positioning nuts of different specifications are arranged at intervals along the axial direction on the flat rotating seat, a lever dial indicator which can move up and down relative to the positioning seat and be locked is provided on the positioning seat, and the lever dial indicator is arranged adjacent to the flat rotating seat.

[0006] When using the present nut verticality measuring device, the user only needs to fix the nut to be measured on the matching fixing part, and adjust the position of the lever dial indicator so that the lever dial indicator contacts the upper end face of the nut to be measured, and then turn the flat rotating seat to make it rotate one circle. Then the user reads the maximum value of the lever dial indicator's jump, and finally divides the maximum value by two to obtain the verticality of the upper end face of the nut to be measured relative to its axis centerline, thereby realizing rapid measurement of the verticality of the nut end face relative to its axis centerline, with a simple structure and easy use. At the same time, by arranging a plurality of fixing parts for positioning nuts of different specifications at intervals along the axial direction on the flat rotating seat, the present nut verticality measuring device can be applied to the measurement of nuts of different specifications, and has good versatility.

[0007] In the above-mentioned nut perpendicularity measuring device, the positioning seat is provided with a plurality of protruding portions, the rotating seat is arranged in abutting contact with the protruding portions up and down, a relief hole is axially formed in the middle of the rotating seat, a tension spring is arranged in the relief hole, and two ends of the tension spring are respectively connected to the rotating seat and the positioning seat. By arranging the tension spring, the rotating seat can be kept in contact with the protruding portion while rotating, and the rotating seat can automatically reset after rotating one circle. In addition, the lever dial indicator is in contact with the upper end surface of the nut to be measured, and the nut to be measured is fixed on the fixing portion of the rotating seat. Therefore, when measuring the perpendicularity of the nut to be measured, the perpendicularity of the upper end surface of the nut to be measured relative to its axis can be measured by rotating the rotating seat one circle. The structure is simple and convenient to use.

[0008] In the above-mentioned nut perpendicularity measuring device, a locking nut is arranged on the top of the rotating seat, an adjusting screw is threadedly connected to the locking nut, an upper tension block is arranged on the adjusting screw, the rotating seat is connected to the upper end of the tension spring through the upper tension block, an installation hole opposite to the relief hole up and down is formed in the positioning seat, a lower tension block is arranged in the installation hole, and the positioning seat is connected to the lower end of the tension spring through the lower tension block. By arranging the upper tension block and the lower tension block, on the one hand, it is convenient to connect the tension spring with the rotating seat and the positioning seat, and on the other hand, the tension spring is arranged vertically, so that the rotating seat can better keep in contact with the protruding portion while rotating, and at the same time, the tension spring can better drive the rotated rotating seat to reset; at the same time, by arranging the upper tension block on the adjusting screw and threadedly connecting the adjusting screw to the locking nut on the top of the rotating seat, the magnitude of the tension of the tension spring can be adjusted by rotating the adjusting screw, and the tension of the tension spring can be kept moderate.

[0009] In the above-mentioned nut perpendicularity measuring device, the adjusting screw has a fixing hole opposite to the relief hole up and down, and the upper tension block is arranged in the fixing hole. The above structure, on the one hand, is convenient to set external threads on the adjusting screw, which is convenient for the connection between the adjusting screw and the locking nut on the top of the rotating seat, and on the other hand, makes the upper tension block, the relief hole and the lower tension block opposite to each other up and down in sequence, so that the tension spring can be better arranged vertically.

[0010] In the above-mentioned nut perpendicularity measuring device, the outer diameters of a plurality of fixing portions gradually increase from top to bottom, and external threads are arranged on the outer side walls of the fixing portions. By arranging the outer diameters of the plurality of fixing portions to gradually increase from top to bottom, the rotating seat has a shape that is smaller at the top and larger at the bottom, so that the rotation of the rotating seat is more stable. And by arranging external threads on the outer side walls of the fixing portions, it is convenient for the nut to be detected to be connected with the fixing portions, and the connection state is more stable.

[0011] In the above-mentioned nut perpendicularity measuring device, the convex portion is conical. By setting the convex portion to be conical, on the one hand, it is convenient for the convex portion to support the swivel base, and on the other hand, when the swivel base rotates, the convex portion can better maintain contact with the bottom of the swivel base.

[0012] In the above-mentioned nut perpendicularity measuring device, a positioning column parallel to the swivel base is vertically arranged on the positioning seat, and a connecting seat that can move up and down relative to it and be locked is horizontally arranged on the positioning column, and the dial indicator is arranged on the connecting seat. The above structure enables the dial indicator to move up and down relative to the positioning seat better, so that when detecting nuts of different sizes (the positions of nuts of different sizes fixed on the swivel base are different), the position of the dial indicator can be adjusted to keep the dial indicator in contact with the upper end face of the nut to be measured, so that the nut perpendicularity measuring device can be applicable to the measurement of nuts of different specifications and has good versatility.

[0013] In the above-mentioned nut perpendicularity measuring device, the connecting seat is sleeved on the positioning column and locked with the positioning column by bolts. The above structure enables the dial indicator to move up and down relative to the positioning seat more conveniently and be locked.

[0014] Compared with the prior art, the advantages of the present nut perpendicularity measuring device are as follows: the structure of the present nut perpendicularity measuring device is simple and easy to use. It can not only quickly measure the perpendicularity of the nut end face relative to its axis line, but also be applicable to the measurement of nuts of different specifications and has good versatility. Brief Description of the Drawings

[0015] Figure 1 is a schematic structural diagram of the present nut perpendicularity measuring device.

[0016] In the figure, 1. positioning seat; 1a. convex portion; 1b. mounting hole; 2. swivel base; 2a. fixing portion; 2b. relief hole; 3. dial indicator; 4. tension spring; 5. lock nut; 6. adjusting screw; 6a. fixing hole; 7. upper tension block; 8. lower tension block; 9. positioning column; 10. connecting seat. Detailed Embodiment

[0017] The following are specific embodiments of the present invention and in combination with the drawings, the technical solutions of the present invention will be further described, but the present invention is not limited to these embodiments.

[0018] A nut perpendicularity measuring device, referring to Figure 1, including a positioning seat 1, on which a horizontally rotatable and columnar swivel seat 2 is provided. A plurality of fixing parts 2a for positioning nuts of different specifications are arranged at intervals along the axial direction of the swivel seat 2. A lever dial indicator 3 that can move up and down relative to the positioning seat 1 and be locked is provided on the positioning seat 1, and the lever dial indicator 3 is arranged adjacent to the swivel seat 2.

[0019] Specifically, referring to Figure 1 , there are several convex parts 1a on the positioning seat 1. The swivel seat 2 is arranged in abutment with the convex parts 1a up and down. A relief hole 2b is axially opened in the middle of the swivel seat 2. A tension spring 4 is arranged in the relief hole 2b, and both ends of the tension spring 4 are respectively connected to the swivel seat 2 and the positioning seat 1. Specifically, a positioning column 9 parallel to the swivel seat 2 is vertically arranged on the positioning seat 1. A connecting seat 10 that can move up and down relative to the positioning column 9 and be locked is transversely arranged on the positioning column 9. The lever dial indicator 3 is arranged on the connecting seat 10.

[0020] In this embodiment, it is preferred that the connecting seat 10 is sleeved on the positioning column 9 and locked to the positioning column 9 by bolts.

[0021] More specifically, referring to Figure 1 , a locking nut 5 is arranged on the top of the swivel seat 2. An adjusting screw 6 is threadedly connected to the locking nut 5. An upper tension block 7 is arranged on the adjusting screw 6. The swivel seat 2 is connected to the upper end of the tension spring 4 through the upper tension block 7. There is an installation hole 1b on the positioning seat 1 that is vertically opposite to the relief hole 2b. A lower tension block 8 is arranged in the installation hole 1b. The positioning seat 1 is connected to the lower end of the tension spring 4 through the lower tension block 8; the adjusting screw 6 has a fixing hole 6a that is vertically opposite to the relief hole 2b. The upper tension block 7 is arranged in the fixing hole 6a.

[0022] In this embodiment, it is preferred that the outer diameters of the plurality of fixing parts 2a gradually increase from top to bottom, and external threads are provided on the outer side walls of the fixing parts 2a; it is preferred that the convex parts 1a are conical.

[0023] The working principle of this nut perpendicularity measuring device is described below:

[0024] The user first fixes the nut to be measured on the flat rotating seat 2 and the matching fixing part 2a thereof (it can be done by rotating it into place, and the external thread of the fixing part 2a is matched with the internal thread of the nut), and then the user rotates the adjusting screw 6 until the tension of the tension spring 4 is moderate, and the bottom surface of the flat rotating seat 2 is in contact with the several conical protrusions 1a on the positioning seat 1 at the same time. At this time, the tension of the tension spring 4 is adjusted into place, and then the user adjusts the position of the connecting seat 10 provided with the lever dial indicator 3, and moves the connecting seat 10 sleeved on the positioning column 9 up and down until the lever dial indicator 3 on the connecting seat 10 is in contact with the upper end surface of the nut to be measured. At this time, the position of the lever dial indicator 3 is adjusted into place, and then the user adjusts the position of the connecting seat 10 provided with the lever dial indicator 3. Then the user locks the connecting seat 10 and the positioning column 9 by means of bolts, and then enters the measuring stage. The user turns the bottom of the flat rotating seat 2 to make it rotate one circle, and then the user records the maximum value of the vibration of the lever dial indicator 3 during this process. Finally, 1 / 2 of the maximum value is the verticality of the upper end face of the nut to be measured relative to its axis (because the vibration reading of the lever dial indicator 3 actually refers to the amplitude of the object's vibration, and the vibration period is two vibration periods, so it should be divided by two here). After the measurement is completed, the flat rotating seat 2 is reset under the action of the tension spring 4, and the user removes the nut to be measured, turns it upside down and repeats the above steps to measure the verticality of the other end face of the nut relative to its axis.

[0025] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A nut perpendicularity measuring device, comprising a positioning seat (1), characterized in that, A swivel base (2) which is columnar and can rotate horizontally relative to the positioning base (1) is provided on the positioning base (1). A plurality of fixing parts (2a) for positioning nuts of different specifications are arranged on the swivel base (2) at intervals along the axial direction. A lever dial indicator (3) which can move up and down relative to the positioning base (1) and be locked is provided on the positioning base (1), and the lever dial indicator (3) is arranged adjacent to the swivel base (2).

2. The nut perpendicularity measuring device according to claim 1, characterized in that, Several protruding parts (1a) are provided on the positioning base (1), the swivel base (2) is arranged in an up-and-down abutting manner with the protruding parts (1a), a relief hole (2b) is axially formed in the middle of the swivel base (2), and a tension spring (4) is arranged in the relief hole (2b). The two ends of the tension spring (4) are respectively connected to the swivel base (2) and the positioning base (1).

3. The nut perpendicularity measuring device according to claim 2, wherein A lock nut (5) is provided at the top of the swivel base (2). An adjusting screw (6) is threadedly connected to the lock nut (5). An upper tension block (7) is provided on the adjusting screw (6). The swivel base (2) is connected to the upper end of the tension spring (4) through the upper tension block (7). An installation hole (1b) which is vertically opposite to the relief hole (2b) is provided on the positioning base (1), and a lower tension block (8) is arranged in the installation hole (1b). The positioning base (1) is connected to the lower end of the tension spring (4) through the lower tension block (8).

4. A nut perpendicularity measuring device according to claim 3, characterized in that, The adjusting screw (6) has a fixing hole (6a) which is vertically opposite to the relief hole (2b), and the upper tension block (7) is arranged in the fixing hole (6a).

5. A nut perpendicularity measuring device according to claim 1 or 2 or 3 or 4, characterized in that, The outer diameters of the plurality of fixing parts (2a) gradually increase from top to bottom, and external threads are provided on the outer side walls of the fixing parts (2a).

6. A nut perpendicularity measuring device according to claim 2 or 3 or 4, characterized in that The protruding parts (1a) are conical in shape.

7. A nut perpendicularity measuring device according to claim 1 or 2 or 3 or 4, characterized in that, A positioning column (9) which is parallel to the swivel base (2) is vertically arranged on the positioning base (1). A connecting seat (10) which can move up and down relative to the positioning column (9) and be locked is horizontally arranged on the positioning column (9), and the lever dial indicator (3) is arranged on the connecting seat (10).

8. A nut perpendicularity measuring device according to claim 7, characterized in that, The connecting seat (10) is sleeved on the positioning column (9) and is locked to the positioning column (9) through bolts.

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