Screw thread initial distance measuring instrument of ball screw pair

Abstract

The utility model discloses a lead screw thread initial distance measuring instrument of a ball screw pair, which comprises a main body base, and a sleeve structure is arranged on the mounting surface of the main body base; a fixed center body which is arranged outwards is arranged in the sleeve structure; a movable center body is connected with the main body base through a bracket seat; the movable center body and the fixed center body are oppositely arranged, and a ball screw pair to be detected is axially arranged between the opposite positions; the lifting and lowering of the testing head are controlled through a movable mechanism; the initial position of the screw thread of the ball screw pair is measured through the test head, and the measurement data is displayed through the test meter connected with the test head. The device has the advantages of high repeatability and stability, the tip body and the test rod test head with corresponding shapes and sizes can be designed and manufactured according to different boundary dimensions of the ball screw and different spiral raceways, the task of detecting the thread starting distance of the ball screw in a workshop can be realized with relatively low cost, and the device has obvious advantages and effects.

Description

Technical Field

[0001] The utility model relates to the field of ball screw pair measurement, in particular to a screw thread starting distance measuring instrument for a ball screw pair. Background Art

[0002] A ball screw pair is a transmission mechanical component that converts the rotary motion of a steel ball into linear motion. It has the characteristics of high positioning accuracy, long service life, low pollution, and the ability to perform high-speed forward and reverse transmission and conversion transmission. Due to the above characteristics, the ball screw pair has become one of the important components in the positioning and measurement systems of the precision technology industry and the precision machinery industry in recent years.

[0003] After the invention of the ball screw pair, it was difficult to manufacture and could not be put into practical use for a long time. With the emergence of precision thread grinders, the ball screw pair has made a qualitative leap in accuracy and performance. With the development of CNC machine tools and various automation equipment, the research and production of ball screw pairs have been promoted.

[0004] In the processing of the thread raceway of the ball screw pair, it is necessary to ensure the relative position of the thread raceway and the reference surface, and some detection methods are needed. The general practice is to add a detection probe to the CNC machine tool to detect the actual position of the raceway or send it to a three-coordinate measuring machine for detection. In this way, the operation of the machine tool requires a certain waiting time for detection, and the machine cannot be started for production, which affects production efficiency. The detection cost investment is also very high. Utility Model Content

[0005] In order to overcome the above-mentioned defects of the prior art, the purpose of the utility model is to provide a screw thread starting distance measuring instrument for a ball screw pair.

[0006] In order to achieve the purpose of this utility model, the technical solution adopted is:

[0007] A ball screw thread starting distance measuring instrument for a ball screw pair, comprising:

[0008] A main body base, on the mounting surface of which a sleeve structure is provided;

[0009] A fixed top body arranged outward is built into the sleeve structure;

[0010] A movable center body is connected to the main body base through a bracket seat;

[0011] The movable centering body and the fixed centering body are arranged opposite to each other, and the ball screw pair to be tested is axially installed between the relative positions;

[0012] A test head is raised and lowered by a movable mechanism;

[0013] The starting position of the screw thread of the ball screw pair is measured by the test head, and the measurement data is displayed by a test table connected to the test head.

[0014] In a preferred embodiment of the present utility model, the sleeve structure is arranged on the mounting surface of the main body base through a bottom plate.

[0015] In a preferred embodiment of the present invention, the sleeve structure is fixed on any waist-shaped hole of the base plate.

[0016] In a preferred embodiment of the present utility model, one end of the bracket seat is arranged on the mounting surface of the main body base through a bottom plate.

[0017] In a preferred embodiment of the present utility model, the bracket seat and the sleeve structure are fixed on any waist-shaped hole of the bottom plate.

[0018] In a preferred embodiment of the present invention, the test head is a test head with a spherical structure, the test head is connected to a movable mechanism via a test rod, and the movable mechanism is fixed on a table frame.

[0019] In a preferred embodiment of the present invention, the upward and downward movement of the watch frame is controlled by an elastic member.

[0020] In a preferred embodiment of the present invention, the test meter is arranged on the meter stand.

[0021] In a preferred embodiment of the present invention, the elastic member is a spring.

[0022] In a preferred embodiment of the present invention, the movement of the movable top is controlled by a crank.

[0023] The beneficial effects of the utility model are:

[0024] The utility model has the advantages of high repeatability and stability. The top body and the test rod test head of corresponding shapes and sizes can be manufactured according to the different designs of the ball screw outer dimensions and the spiral raceway. The task of detecting the starting distance of the ball screw thread can be realized on-site in the workshop at a relatively low cost, and its advantages and effects are obvious. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 The structure of the utility model is shown in FIG. Figure 1 .

[0026] Figure 2 The structure of the utility model is shown in FIG. Figure 2 . DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model is further described in detail below through the accompanying drawings and embodiments. However, it should be understood that the specific embodiments described herein are only used to explain the utility model and are not used to limit the scope of the utility model. In addition, in the following structure, the description of the well-known structure and technology is omitted to avoid unnecessary confusion of the concept of the utility model.

[0028] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the device or component referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0029] like Figure 1 A ball screw thread starting distance measuring instrument of a ball screw pair includes a main base 100, a sleeve structure 200 is arranged on the mounting surface of the main base 100, and the sleeve structure 200 is arranged on the mounting surface of the main base 100 through a bottom plate 110, specifically, the sleeve structure 200 is fixed on any waist-shaped hole 111 of the bottom plate 110. A plurality of waist-shaped holes are arranged on the bottom plate 110, and the purpose of such arrangement is to facilitate adjustment for ball screw pairs of different sizes.

[0030] Similarly, one end of the bracket seat 300 is disposed on the mounting surface of the main base 100 through the bottom plate 110. The bracket seat 300 and the sleeve structure 200 are fixed on any waist-shaped hole 111 of the bottom plate 110.

[0031] Such a fixing method is to relatively fix the positions of the bracket seat 300 and the sleeve structure 200.

[0032] The sleeve structure 200 is provided with a fixed top body 210 facing outward. The movable top body 310 is connected to the main body base 100 through the support seat 300. The movable top body 310 is movably arranged on the support seat 300 through the slider 700.

[0033] The movable top body 310 is arranged opposite to the fixed top body 210 , and a ball screw pair (not shown in the figure) to be tested is axially installed in the space between the relative positions. The movement of the movable top body 310 is controlled by a crank 320 .

[0034] The test head 400 is raised and lowered by the movable mechanism 500 .

[0035] The test head 400 is a test head of a spherical structure, and the specific size of the spherical structure is adjusted according to the screw thread size of the ball screw pair. The ball head structure reduces wear, has a reasonable structure, and has a good overlap with the ball screw pair.

[0036] The test head 400 is connected to the movable mechanism 500 via the test rod 410 . The movable mechanism 500 is fixed on the table frame 600 and controls the height of the table frame 600 .

[0037] The height of the watch frame 600 can be mechanically adjusted, and the limit distance of the up and down movement of the watch frame 600 is controlled by the elastic member 800, and the elastic member 800 is a spring.

[0038] In addition, a test table 610 is provided on the table frame 600 , and the starting position of the screw thread of the ball screw pair (not shown in the figure) is measured by the test head 400 , and the measurement data is displayed by the test table 610 connected to the test head 400 .

[0039] Because of the above structure, the working principle of the utility model is:

[0040] The position of the bracket seat 300 is adjusted according to the length of the ball screw pair (not shown in the figure) to be detected, and the position is fixed using bolts 330.

[0041] Lift the handle of the movable mechanism 500 to move the table frame 600 upward, drive the test head 400 to move upward, align one end of the ball screw pair to be tested (not shown in the figure) with the position of the fixed top body 210 in the sleeve structure 200 and insert it, shake the handle 320 to extend the movable top body 310 to support the other end of the ball screw pair to be tested (not shown in the figure).

[0042] The handle of the movable mechanism 500 is lowered to move the table frame 600 downward, thereby driving the test head 400 downward, and reading the data of the test table 610 .

Claims

1. A ball screw thread starting distance measuring instrument, characterized in that: include: A main body base, on the mounting surface of which a sleeve structure is provided; A fixed top body arranged outward is built into the sleeve structure; A movable center body is connected to the main body base through a bracket seat; The movable centering body and the fixed centering body are arranged opposite to each other, and the ball screw pair to be tested is axially installed between the relative positions; A test head is raised and lowered by a movable mechanism; The starting position of the screw thread of the ball screw pair is measured by the test head, and the measurement data is displayed by a test table connected to the test head.

2. The ball screw thread starting distance measuring instrument of a ball screw pair as claimed in claim 1, characterized in that: The sleeve structure is arranged on the mounting surface of the main body base through a bottom plate.

3. The ball screw thread starting distance measuring instrument of a ball screw pair as claimed in claim 2, characterized in that: The sleeve structure is fixed on any waist-shaped hole of the bottom plate.

4. The ball screw thread starting distance measuring instrument of a ball screw pair as claimed in claim 3, characterized in that: One end of the bracket seat is arranged on the installation surface of the main body base through a bottom plate.

5. The ball screw thread starting distance measuring instrument of a ball screw pair as claimed in claim 4, characterized in that: The bracket seat and the sleeve structure are fixed on any waist-shaped hole of the bottom plate.

6. The ball screw thread starting distance measuring instrument of a ball screw pair as claimed in claim 1, characterized in that: The test head is a test head of a spherical structure, and the test head is connected to a movable mechanism through a test rod, and the movable mechanism is fixed on a table frame.

7. The ball screw thread starting distance measuring instrument of a ball screw pair as claimed in claim 6, characterized in that: The upward and downward movement of the watch frame is controlled by an elastic member.

8. The ball screw thread starting distance measuring instrument of a ball screw pair as claimed in claim 7, characterized in that: The elastic member is a spring.

9. The ball screw thread starting distance measuring instrument of a ball screw pair as claimed in claim 6, characterized in that: The test table is arranged on the table frame.

10. The ball screw thread starting distance measuring instrument of a ball screw pair according to claim 1, characterized in that: The movement of the movable top body is controlled by a crank.

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