A kind of internal spline inspection spindle structure of a gear

Abstract

The utility model relates to the field of inspection spindles, and specifically to a structure for inspection spindles of internal splines of a blade gear. The structure includes a spindle body and an expansion sleeve; the spindle body is a cylindrical structure, and a frustum is arranged on its outer circumference; a tapered hole matching the frustum is arranged on the inner circumference of the expansion sleeve, and a plurality of external splines evenly distributed in the circumferential direction and extending in the axial direction are arranged on the outer circumferential surface; the expansion sleeve is sleeved on the frustum of the spindle body through the tapered hole; the expansion sleeve includes a sleeve body and external splines arranged on the outer circumferential surface of the sleeve body; the tapered hole is arranged on the inner circumferential surface of the sleeve body; a plurality of recessed grooves distributed in the circumferential direction, extending in the axial direction and radially penetrating its side wall are respectively arranged on the two end surfaces of the sleeve body, and the plurality of recessed grooves on the two end surfaces are arranged at intervals in the circumferential direction. The utility model is conducive to detection and has a good clamping effect.

Description

Technical Field

[0001] The utility model relates to an inspection spindle structure, in particular to an inspection spindle structure for a spline inside a blade gear. Background Art

[0002] The expansion sleeve type clamp is a type of clamp that is increasingly used in the machining industry, especially in gear machining. The traditional expansion sleeve type clamp is to produce an outward tensioning force by matching the inner cone surface of the expansion sleeve with the outer cone surface of the clamp mandrel, thereby completing the tensioning of the inner hole of the part.

[0003] Chinese patent CN114799251A discloses an expansion sleeve type turning and grinding spindle clamp, including a turning spindle body and a spring expansion sleeve, both ends of the turning spindle body are provided with a B-type center hole and a cylindrical section, the turning spindle body is provided with a tapered section, a guide section and a threaded section; the spring expansion sleeve is installed on the outside of the tapered section of the turning spindle body, and the taper inside the spring expansion sleeve is the same as the taper of the tapered section of the turning spindle body; one side of the tapered section is a guide section, the outer side of the guide section is sleeved with a clamping guide sleeve, one side of the guide section is a threaded end, and the outer side of the threaded section is sleeved with a nut.

[0004] However, the tightening part of the above-mentioned clamp is the tooth top of the internal spline, and the existing inspection requirement for the internal spline of the blade gear is based on the internal spline pitch circle. When other surfaces are used as the reference for inspection, there will inevitably be a conversion of the reference, thereby reducing the overall inspection accuracy of the parts; at the same time, the structure of the above-mentioned clamp is relatively complex. When it is used for a production and processing mode of multiple varieties and small batches, the inspection cost is high and the time is long. It requires professional technicians to operate, which is not conducive to large-scale production inspection in the workshop. Utility Model Content

[0005] The purpose of the utility model is to solve the problem that the tightening part of the existing clamp is the tooth top of the internal spline, and the existing inspection requirement for the internal spline of the plate gear is based on the internal spline pitch circle. When other surfaces are used as the reference for inspection, there is bound to be a conversion of the reference, thereby reducing the overall inspection accuracy of the parts; at the same time, the structure of the existing clamp is relatively complex. When it comes to the production and processing mode of multiple varieties and small batches, there are technical problems such as high inspection costs and long time, and professional technicians are required to operate, which is not conducive to large-scale production inspection in the workshop. Therefore, a spindle structure for the inspection of the internal spline of a plate gear is provided.

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

[0007] A structure for testing the internal spline of a blade gear, which is special in that:

[0008] It includes a mandrel body and an expansion sleeve;

[0009] The spindle body is a cylindrical structure, and a frustum is arranged on its outer circumference;

[0010] A tapered hole matching the frustum is provided on the inner circumferential surface of the expansion sleeve, and a plurality of external splines uniformly distributed in the circumferential direction and extending in the axial direction are provided on the outer circumferential surface, and the plurality of external splines are used to respectively cooperate with the pitch circles of the plurality of internal splines on the sheet gear during detection; the expansion sleeve is mounted on the frustum of the spindle body through the tapered hole, and is used to control the axial movement of the spindle body during inspection to control the tightening and loosening between the spindle body and the expansion sleeve, thereby controlling the matching state between the external splines of the expansion sleeve and the internal splines of the sheet gear to be inspected; the expansion sleeve comprises an expansion sleeve body and external splines arranged on the outer circumferential surface of the expansion sleeve body; the tapered hole is arranged on the inner circumferential surface of the expansion sleeve body; a plurality of recessed grooves distributed in the circumferential direction, extending in the axial direction and radially penetrating its side wall are respectively provided on the two end surfaces of the expansion sleeve body, and the plurality of recessed grooves on the two end surfaces are spaced apart in the circumferential direction.

[0011] Furthermore, the expansion sleeve includes an expansion sleeve body, a tapered hole arranged on the inner circumferential surface of the expansion sleeve body, and an external spline arranged on the outer circumferential surface of the expansion sleeve body; the two end faces of the expansion sleeve body are respectively provided with a plurality of countersunk grooves distributed along the circumferential direction, extending along the axial direction and radially penetrating its side wall, and the plurality of countersunk grooves on the two end faces are spaced apart along the circumferential direction.

[0012] Furthermore, the number of the sinks is two; and the circumferential intervals between two adjacent sinks along the circumferential direction are equal.

[0013] Furthermore, a plane perpendicular to the dividing surface in the sink is defined as a projection plane, and the projection of the bottom of the sink on the projection plane is an arc shape.

[0014] Furthermore, the frustum is an annular frustum, and the conical hole is an annular conical hole.

[0015] Furthermore, both end faces of the spindle body are provided with a central blind hole in the axial direction, so that the yaw meter can be conveniently connected through the central blind hole.

[0016] The beneficial effects of the utility model are:

[0017] 1. The utility model controls the relative position between the mandrel body and the expansion sleeve through the cooperation of the mandrel body and the expansion sleeve, so that the expansion sleeve can expand and contract within a certain range, and then clamp the parts to be tested; at the same time, because the tensioning part is located at the pitch circle required by the design drawing, it solves the technical problem that the inspection tensioning part of the internal spline of the existing blade gear is at the top of the internal spline tooth, which is not at the pitch circle required by the design drawing, which is not conducive to detection and has a poor clamping effect.

[0018] 2. The utility model has reasonable structure technology of the internal spline inspection spindle of the blade gear, convenient operation, good clamping effect, flexible and convenient use, wide application range, high interchangeability, and can be assembled by quick-change structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a cross-sectional structural diagram of an embodiment of the utility model;

[0020] Figure 2 It is a schematic diagram of the structure of an embodiment of the utility model (the sink groove and the external spline are not shown in the figure);

[0021] Figure 3 It is a structural schematic diagram of an expansion sleeve in an embodiment of the utility model.

[0022] In the figure: 1- spindle body, 2- expansion sleeve, 21- expansion sleeve body, 22- sink groove, 3- cone, 4- cone hole, 5- external spline. DETAILED DESCRIPTION

[0023] In order to make the purpose, advantages and features of the utility model clearer, the following is a further detailed description of a spline inspection spindle structure for a blade gear proposed by the utility model in combination with the accompanying drawings and specific embodiments. According to the following specific implementation methods, the advantages and features of the utility model will be clearer.

[0024] See also Figure 1-Figure 3 In this embodiment, a structure of a spline inspection spindle for a blade gear mainly includes a spindle body 1 and an expansion sleeve 2.

[0025] Among them, see Figure 1 The spindle body 1 is a cylindrical structure, and a frustum 3 is arranged on the outer circumference of the spindle body 1, and the frustum 3 is located in the middle position of the axial direction of the spindle body 1; the frustum 3 is preferably an annular frustum in this embodiment; the taper of the frustum 3 can be determined according to actual needs. The parts of the outer circumference of the spindle body 1 located on both sides of the frustum 3 are used as handles, which can be convenient for manual operation. And the end faces of the spindle body 1 are respectively provided with axially oriented central blind holes (not shown in the figure), which are used for positioning and connecting with an external runout meter, so as to control the movement of the spindle body 1 through the external runout meter.

[0026] See also Figure 1 and Figure 2A tapered hole 4 matched with the cone 3 is provided on the inner circumferential surface of the expansion sleeve 2, and the taper of the tapered hole 4 is matched with the taper of the cone 3. A plurality of external splines 5 uniformly distributed along the circumferential direction and extending axially in the length direction are provided on the outer circumferential surface of the expansion sleeve 2. The plurality of external splines 5 can be matched with the pitch circles of the plurality of internal splines on the to-be-tested sheet gear during detection, so that the tightening part meets the pitch circle position required by the design drawing. The expansion sleeve 2 is sleeved on the cone 3 of the spindle body 1 through the tapered hole 4. During inspection, the expansion and loosening between the spindle body 1 and the expansion sleeve 2 are controlled by controlling the axial movement of the spindle body 1, thereby controlling the matching state between the external splines 5 of the expansion sleeve 2 and the internal splines of the sheet gear to be inspected. Then, during inspection, the purpose of inspecting the internal splines of the sheet gear is achieved through the matching state between the internal splines and the external splines 5.

[0027] For details, see Figure 3 The expansion sleeve 2 of this embodiment mainly includes an expansion sleeve body 21 and an external spline 5 arranged on the outer circumferential surface of the expansion sleeve body 21. The tapered hole 4 is arranged on the inner circumferential surface of the expansion sleeve body 21. The two end faces of the expansion sleeve body 21 are respectively provided with a plurality of recessed grooves 22 distributed in the circumferential direction, extending in the axial direction and penetrating its side wall in the radial direction, and the plurality of recessed grooves 22 on the two end faces are arranged at intervals in the circumferential direction; the plane perpendicular to the dividing face in the recessed groove 22 is defined as the projection plane, and the projection of the bottom of the recessed groove 22 on the projection plane is an arc shape, thereby improving the tightening effect of the expansion sleeve 2. More specifically, the number of recessed grooves 22 in this embodiment is four; that is, two recessed grooves 22 are arranged on each end face, and the circumferential intervals of two adjacent recessed grooves 22 in the circumferential direction are equal.

[0028] During inspection:

[0029] 1. First, check whether the outer circumference of the cone 3 of the mandrel body 1 is free of bumps and is clean, and ensure that the outer circumference of the cone 3 of the mandrel body 1 is clean and free of debris to avoid affecting the matching effect with the cone hole 4, thereby affecting the inspection accuracy;

[0030] 2. Secondly, check whether the tapered hole 4 of the expansion sleeve 2 is free of bumps and is clean, and ensure that the tapered hole 4 is clean and free of debris to avoid affecting the matching effect with the frustum 3, thereby affecting the inspection accuracy;

[0031] 3. Finally, the expansion sleeve 2 is mounted on the cone 3 of the spindle body 1 through the tapered hole 4, so that the tapered hole 4 and the cone 3 match each other; through the axial movement of the spindle body 1, the cone 3 of the spindle body 1 can expand the tapered hole 4 of the expansion sleeve 2, thereby driving the circumferential position of the external spline 5 on the outer peripheral surface of the expansion sleeve 2 to change, and then matching with the internal spline of the gear to be inspected, and judging whether the internal spline of the gear is qualified by checking the matching state of the internal spline and the external spline 5; after the inspection is completed, the spindle body 1 is driven to move in the reverse direction to loosen the expansion sleeve 2 and complete the inspection.

Claims

1. A structure for testing the internal spline of a blade gear, characterized in that: It comprises a spindle body (1) and an expansion sleeve (2); A frustum (3) is provided on the outer peripheral surface of the spindle body (1); The inner circumferential surface of the expansion sleeve (2) is provided with a tapered hole (4) adapted to the frustum (3), and the outer circumferential surface is provided with a plurality of external splines (5) uniformly distributed along the circumferential direction and extending along the axial direction, and the plurality of external splines (5) are used to match with the pitch circle of the internal splines on the blade gear during detection; The expansion sleeve (2) is sleeved on the cone (3) of the spindle body (1) through the tapered hole (4), and is used to control the axial movement of the spindle body (1) during inspection to control the tightening and loosening state between the spindle body (1) and the expansion sleeve (2), thereby controlling the matching state between the external spline (5) of the expansion sleeve (2) and the internal spline of the gear to be inspected; The expansion sleeve (2) comprises an expansion sleeve body (21) and an external spline (5) arranged on the outer peripheral surface of the expansion sleeve body (21); the tapered hole (4) is arranged on the inner peripheral surface of the expansion sleeve body (21); The two end surfaces of the expansion sleeve body (21) are respectively provided with a plurality of recessed grooves (22) distributed in the circumferential direction, extending in the axial direction and penetrating the side wall in the radial direction, and the plurality of recessed grooves (22) on the two end surfaces are arranged at intervals in the circumferential direction.

2. A structure for testing the internal spline of a blade gear according to claim 1, characterized in that: The number of the sink grooves (22) is four; the intervals between two adjacent sink grooves (22) along the circumferential direction are equal.

3. A structure for testing the internal spline of a blade gear according to claim 2, characterized in that: A plane perpendicular to the dividing facets in the trough (22) is defined as a projection plane, and the projection of the bottom of the trough (22) on the projection plane is in the shape of an arc.

4. A structure for testing the internal spline of a blade gear according to any one of claims 1 to 3, characterized in that: The frustum (3) is an annular frustum, and the conical hole (4) is an annular conical hole.

5. The internal spline inspection spindle structure of a blade gear according to claim 1, characterized in that: Both end surfaces of the spindle body (1) are provided with a central blind hole along the axial direction.

6. A structure for testing the internal spline of a blade gear according to claim 5, characterized in that: The spindle body (1) is a cylindrical structure.

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