Spline shaft run-out degree testing fixture

Abstract

The utility model discloses a spline shaft run-out degree testing fixture which comprises a rotating support, the rotating support comprises a first arm and a second arm which are perpendicular to each other, the first arm is rotatably connected with an external spline plug gauge used for positioning a spline shaft, the external spline plug gauge is matched with an internal spline end of the spline shaft in a sleeved mode, and the external spline plug gauge and the spline shaft are coaxial. The rotating bracket can circumferentially rotate around the axis of the external spline plug gauge; the second arm is provided with a measuring instrument used for measuring the runout degree of the outer peripheral wall of the spline shaft, and a gauge outfit of the measuring instrument presses the outer peripheral wall of the spline shaft. The change of the distance between the top surface of the internal spline and the peripheral wall of the spline shaft is transmitted to the measuring instrument, the measurement of the radial run-out value of the internal spline is realized, the structure is simple, the use is convenient, the measurement is fast, and a hand-held gauge can directly measure a product on a production line at any time; the external spline plug gauge can be replaced to adapt to measurement of internal spline shafts with different sizes, so that the external spline plug gauge has multiple functions, the cost can be saved, and the economic benefit can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of inspection tools, in particular to a spline shaft runout inspection tool. Background Art

[0002] Spline radial runout is one of the key parameters of the spline. This parameter reflects the radial error of the spline and has a great influence on the transmission accuracy of the spline. Therefore, measuring the radial runout of the spline is essential in spline production and product assembly.

[0003] If the spline is on the outer wall of the shaft, its radial runout is easier to measure, but when the spline is in the inner hole of the shaft, Figure 1 A spline shaft 100 is shown, one end of which is an internal spline end 101 with an internal spline. The radial runout of the internal spline requires a gear measuring instrument or an internal spline comprehensive gauge to control the accuracy of the internal spline of the product. The gear measuring instrument takes a long time to detect (an average of 3-5 minutes per piece), and the internal spline comprehensive gauge cannot detect the specific radial runout value, which is not conducive to the control of the internal spline accuracy during the processing process and is prone to produce a large number of defective parts.

[0004] Therefore, it is necessary to improve the existing technology. Utility Model Content

[0005] The purpose of the utility model is to provide a spline shaft runout inspection tool to address the defects and shortcomings of the prior art. The utility model is designed with an external spline plug gauge that matches the internal spline, simulates assembly engagement to position the spindle, and then draws out an outer circle reference surface on the outer peripheral wall of the spline shaft to measure the outer circle runout.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A spline shaft runout inspection tool comprises a rotating bracket, the rotating bracket comprises a first arm and a second arm arranged perpendicular to each other, an external spline plug gauge for positioning the spline shaft is rotatably connected to the first arm, the external spline plug gauge is sleeved and matched with the internal spline end of the spline shaft, and the external spline plug gauge is coaxial with the spline shaft, and the rotating bracket can rotate circumferentially around the axis of the external spline plug gauge; a measuring instrument for measuring the runout of the outer peripheral wall of the spline shaft is arranged on the second arm, and the gauge head of the measuring instrument presses the outer peripheral wall of the spline shaft.

[0008] Furthermore, a through hole for installing a measuring instrument is provided on the second arm, and a fastening bolt for fixing the measuring instrument to the second arm is provided on the second arm.

[0009] Furthermore, a bushing is installed in the through hole.

[0010] Furthermore, a mounting hole for mounting an external spline plug gauge is provided on the first arm, and a bearing is installed in the mounting hole.

[0011] Furthermore, the inner ring of the bearing is tightly connected to the external spline plug gauge, and the outer ring of the bearing is tightly connected to the mounting hole.

[0012] Furthermore, the external spline plug gauge is integrally provided with a first stopper, and the first stopper cooperates with the inner end stopper of the mounting hole.

[0013] Furthermore, the external spline plug gauge is detachably provided with a second stopper, and the second stopper cooperates with the outer end stopper of the mounting hole.

[0014] Furthermore, the second stopper is detachably connected to the external spline plug gauge via a locking bolt.

[0015] Furthermore, the external spline plug gauge includes an external spline segment, the external spline segment is provided with a small head end and a large head end, the small head end is an insertion end, and the dividing arc tooth thickness S2 of the large head end is greater than the dividing arc tooth thickness S1 of the small head end.

[0016] Furthermore, the measuring instrument is a dial indicator or a micrometer.

[0017] After adopting the above structure, the utility model has the following beneficial effects:

[0018] (1) The utility model discloses a spline shaft runout gauge, comprising a rotating bracket, the rotating bracket comprising a first arm and a second arm arranged perpendicularly to each other, the first arm being rotatably connected with an external spline plug gauge for positioning the spline shaft, the external spline plug gauge being sleeved and matched with the internal spline end of the spline shaft, and the external spline plug gauge being coaxial with the spline shaft, and the rotating bracket being rotatable around the axis of the external spline plug gauge; the second arm being provided with a measuring instrument for measuring the runout of the outer peripheral wall of the spline shaft, the gauge head of the measuring instrument being pressed against the outer peripheral wall of the spline shaft. The measuring instrument transmits the change of the spacing between the top surface of the inner spline and the outer peripheral wall of the spline shaft to the measuring instrument, thereby realizing the measurement of the radial runout value of the inner spline, and has the advantages of simple structure and quick measurement. The utility model can also adapt to the measurement of internal spline shafts of different sizes by replacing the external spline plug gauge, and has a multi-purpose function, which can save costs and improve economic benefits.

[0019] (2) The utility model discloses a spline shaft runout tester, wherein the rotating bracket includes a first arm and a second arm which are perpendicularly arranged to each other, the external spline plug gauge is arranged on the first arm, and the measuring instrument is arranged on the second arm, and the rotating bracket can rotate circumferentially around the axis of the external spline plug gauge. During measurement, the measuring instrument is inserted into the through hole on the second arm, the meter head of the measuring instrument is pressed against the outer peripheral wall of the spline shaft, and the measuring instrument is fixed by tightening the bolts. The inspector holds the spline shaft in one hand and rotates the rotating bracket for one circle with the other hand to complete the runout test, and the runout value is obtained by subtracting the maximum value and the minimum value measured by the measuring instrument. The utility model is simple to manufacture, has a low manufacturing cost, and is easy to use. It can realize the handheld inspection tool to directly measure the product on the production line at any time and read the runout value. The test result can be obtained in a dozen seconds. The method of use is simple, which improves work efficiency and ensures product quality. The skill requirements of the inspector are low, and the operator can be proficient in the operation after a few minutes of training. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the specific implementation methods of the present utility model, the drawings required for use in the description of the specific implementation methods will be briefly introduced below. Obviously, the drawings in the following description are some implementation methods of the present utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 It is a three-dimensional schematic diagram of the spline shaft of the utility model;

[0022] Figure 2 This is a schematic diagram of the overall structure of the utility model Figure 1 ;

[0023] Figure 3 The utility model Figure 2 A longitudinal cross-sectional view of

[0024] Figure 4 The utility model Figure 3 A schematic diagram of the structure at A;

[0025] Figure 5 It is an exploded view of the overall structure of the utility model;

[0026] Figure 6 This is a schematic diagram of the overall structure of the utility model Figure 2 (Spline shaft not shown);

[0027] Figure 7 It is a three-dimensional schematic diagram of the external spline plug gauge of the utility model;

[0028] Figure 8 It is a side view of the external spline section of the external spline plug gauge of the utility model;

[0029] Fig. 9 It is a three-dimensional schematic diagram of the rotating bracket of the utility model.

[0030] Figures 1 to 9 The bid number is:

[0031] 1. Rotating bracket; 11. First arm; 111. Mounting hole; 112. Bearing; 12. Second arm; 121. Through hole; 122. Fastening bolt; 123. Bushing; 2. External spline plug gauge; 21. First stopper; 22. Second stopper; 221. Locking bolt; 23. External spline section; 231. Small head end; 232. Large head end; 3. Measuring instrument; 31. Meter head; 100. Spline shaft; 101. Internal spline end. DETAILED DESCRIPTION

[0032] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the utility model, so the utility model is not limited by the specific embodiments disclosed below.

[0033] In the description of the present invention, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply 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 invention.

[0034] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0035] In the present invention, unless otherwise clearly defined and limited, if the terms "installed", "connected", "connected", "fixed" and the like appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0036] In the present utility model, unless otherwise clearly specified and limited, if there is a description that a first feature is "above" or "below" a second feature, etc., or similar descriptions appear, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0037] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this utility model are only for illustrative purposes and do not represent the only implementation method.

[0038] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments of the present invention can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0039] like Figures 1 to 9As shown, a spline shaft runout inspection tool comprises a rotating bracket 1, the rotating bracket 1 comprises a first arm 11 and a second arm 12 which are arranged perpendicularly to each other, the first arm 11 is rotatably connected with an external spline plug gauge 2 for positioning the spline shaft 100, the external spline plug gauge 2 is sleeved and matched with the internal spline end 101 of the spline shaft 100, and the external spline plug gauge 2 is coaxial with the spline shaft 100, and the rotating bracket 1 can rotate circumferentially around the axis of the external spline plug gauge 2; the second arm 12 is provided with a measuring instrument 3 for measuring the runout of the outer peripheral wall of the spline shaft 100, and the gauge head 31 of the measuring instrument 3 presses the outer peripheral wall of the spline shaft 100. The second arm 12 is provided with a through hole 121 for installing the measuring instrument 3, and the second arm 12 is provided with a fastening bolt 122 for fixing the measuring instrument 3 to the second arm 12. The measuring instrument 3 is a dial indicator or a micrometer.

[0040] Based on the above embodiments, the utility model aims to solve the problem of providing a spline shaft runout inspection tool, including a rotating bracket 1, the rotating bracket 1 including a first arm 11 and a second arm 12 arranged perpendicular to each other, the first arm 11 is rotatably connected with an external spline plug gauge 2 for positioning the spline shaft 100, the external spline plug gauge 2 is sleeved and matched with the internal spline end 101 of the spline shaft 100, and the external spline plug gauge 2 is coaxial with the spline shaft 100, and the rotating bracket 1 can rotate circumferentially around the axis of the external spline plug gauge 2; the second arm 12 is provided with a measuring instrument 3 for measuring the runout of the outer peripheral wall of the spline shaft 100, and the head 31 of the measuring instrument 3 presses the outer peripheral wall of the spline shaft 100. It transmits the change in the spacing between the top surface of the inner spline and the outer wall of the spline shaft 100 to the measuring instrument 3, thereby realizing the measurement of the radial runout value of the inner spline. It has the advantages of simple structure and fast measurement. The utility model can also adapt to the measurement of inner spline shafts 100 of different sizes by replacing the external spline plug gauge 2. It has a multi-purpose function, can save costs and improve economic benefits.

[0041] In this embodiment, the rotating bracket 1 includes a first arm 11 and a second arm 12 which are perpendicularly arranged to each other, the external spline plug gauge 2 is arranged on the first arm 11, and the measuring instrument 3 is arranged on the second arm 12. The rotating bracket 1 can rotate circumferentially around the axis of the external spline plug gauge 2. During measurement, the measuring instrument 3 is inserted into the through hole 121 on the second arm 12, and the head 31 of the measuring instrument 3 presses the outer peripheral wall of the spline shaft 100. The measuring instrument 3 is fixed by tightening the bolt 122. The inspector holds the spline shaft 100 in one hand and rotates the rotating bracket 1 for one circle with the other hand to complete the runout detection. The runout value is obtained by subtracting the maximum value and the minimum value measured by the measuring instrument 3. The utility model is simple to manufacture, has a low manufacturing cost, is easy to use, and can realize that the handheld inspection tool can directly measure the product on the production line at any time, read the runout value, and the test result can be obtained in more than ten seconds. The method of use is simple, which improves the detection efficiency and ensures the product quality at the same time. The skill requirements of the inspector are low, and the operator can be proficient in operation after a few minutes of training.

[0042] In this embodiment, the measuring instrument 3 is a dial indicator or a micrometer. The dial indicator or the micrometer can be used for measurement, or other measuring instruments 3 known in the art can be used.

[0043] As another preferred solution of the present invention, a bushing 123 is installed in the through hole 121. Figure 4 and Figure 5 As shown, the setting of the bushing 123 avoids contact friction between the measuring instrument 3 and the through hole 121 on the second arm 12 , reduces damage to the measuring instrument 3 , and plays a role in protecting the measuring instrument 3 .

[0044] As another preferred embodiment of the present invention, a mounting hole 111 for mounting the external spline plug gauge 2 is provided on the first arm 11, and a bearing 112 is mounted in the mounting hole 111. The inner ring of the bearing 112 is tightly connected to the external spline plug gauge 2, and the outer ring of the bearing 112 is tightly connected to the mounting hole 111. In this embodiment, Figure 4 and Figure 5 As shown, the arrangement of the bearing 112 enables the rotating bracket 1 to rotate more smoothly relative to the external spline plug gauge 2.

[0045] As another preferred embodiment of the present invention, the external spline plug gauge 2 is integrally provided with a first stopper 21, and the first stopper 21 cooperates with the inner end stopper of the mounting hole 111. The external spline plug gauge 2 is detachably provided with a second stopper 22, and the second stopper 22 cooperates with the outer end stopper of the mounting hole 111. The second stopper 22 is detachably connected to the external spline plug gauge 2 by a locking bolt 221. In this embodiment, Figure 4 and Figure 5As shown, the detachable connection structure design allows the external spline plug gauge 2 to be replaced to adapt to the measurement of internal spline shafts 100 of different sizes, and has a multi-purpose function, which can save costs and improve economic benefits. The first stopper 21 and the second stopper 22 limit the forward and backward movement of the external spline plug gauge 2 relative to the second arm 12.

[0046] As another preferred embodiment of the present invention, the external spline plug gauge 2 includes an external spline segment 23, and the external spline segment 23 is provided with a small head end 231 and a large head end 232, the small head end 231 is an insertion end, and the indexing arc tooth thickness S2 of the large head end 232 is greater than the indexing arc tooth thickness S1 of the small head end 231. In this embodiment, Figure 7 and Figure 8 As shown, during measurement, the external spline plug gauge 2 is inserted from the insertion end of the small head into the internal spline end 101 of the spline shaft 100. Since the dividing arc tooth thickness S2 of the large head end 232 is greater than the dividing arc tooth thickness S1 of the small head end 231, the external spline plug gauge 2 can be better inserted into the internal spline end 101. As the external spline plug gauge 2 is inserted deeper and deeper into the internal spline end 101, the fitting clearance between the external spline plug gauge 2 and the internal spline end 101 becomes smaller and smaller, thereby improving the measurement accuracy.

[0047] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the present utility model.

Claims

1. A spline shaft runout inspection tool, comprising a rotating bracket (1), characterized in that: The rotating bracket (1) comprises a first arm (11) and a second arm (12) which are arranged perpendicular to each other; an external spline plug gauge (2) for positioning the spline shaft (100) is rotatably connected to the first arm (11); the external spline plug gauge (2) is sleeved and matched with an internal spline end (101) of the spline shaft (100); the external spline plug gauge (2) is coaxial with the spline shaft (100); and the rotating bracket (1) can rotate circumferentially around the axis of the external spline plug gauge (2); and a measuring instrument (3) for measuring the runout of the outer peripheral wall of the spline shaft (100) is arranged on the second arm (12); a gauge head (31) of the measuring instrument (3) presses against the outer peripheral wall of the spline shaft (100).

2. A spline shaft runout tester according to claim 1, characterized in that: The second arm (12) is provided with a through hole (121) for mounting a measuring instrument (3), and the second arm (12) is provided with a fastening bolt (122) for fixedly connecting the measuring instrument (3) to the second arm (12).

3. A spline shaft runout inspection tool according to claim 2, characterized in that: A bushing (123) is installed in the through hole (121).

4. The spline shaft runout tester according to claim 1, characterized in that: The first arm (11) is provided with a mounting hole (111) for mounting an external spline plug gauge (2), and a bearing (112) is mounted in the mounting hole (111).

5. A spline shaft runout inspection tool according to claim 4, characterized in that: The inner ring of the bearing (112) is tightly connected to the external spline plug gauge (2), and the outer ring of the bearing (112) is tightly connected to the mounting hole (111).

6. A spline shaft runout inspection tool according to claim 4, characterized in that: The external spline plug gauge (2) is integrally provided with a first stopper (21), and the first stopper (21) cooperates with an inner end stopper of the mounting hole (111).

7. A spline shaft runout inspection tool according to claim 4 or 6, characterized in that: The external spline plug gauge (2) is detachably provided with a second stopper (22), and the second stopper (22) cooperates with an outer end stopper of the mounting hole (111).

8. A spline shaft runout inspection tool according to claim 7, characterized in that: The second stopper (22) is detachably connected to the external spline plug gauge (2) via a locking bolt (221).

9. The spline shaft runout tester according to claim 1, characterized in that: The external spline plug gauge (2) comprises an external spline segment (23), wherein the external spline segment (23) is provided with a small head end (231) and a large head end (232), wherein the small head end (231) is an insertion end, and a graduated circular arc tooth thickness S2 of the large head end (232) is greater than a graduated circular arc tooth thickness S1 of the small head end (231).

10. The spline shaft runout tester according to claim 1, characterized in that: The measuring instrument (3) is a dial gauge or a micrometer.

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