Spline shaft positioning tool

Abstract

The utility model discloses a spline shaft positioning tool, which relates to the field of clamps, and adopts the technical scheme that the spline shaft positioning tool comprises a driving tip and a tailstock tip which are coaxially arranged on a machine body, the spline shaft positioning tool comprises a spline housing, and an inner spline matched with a spline shaft is arranged on the inner wall of the spline housing; the spline housing is arranged on a linear driving device, and the linear driving device drives the spline housing to move in the axial direction of the spline shaft. The spline shaft can be quickly and effectively positioned and locked, the operation is very convenient, and the positioning is more stable.

Description

Technical Field

[0001] The utility model relates to the field of clamps, in particular to a spline shaft positioning tool. Background Art

[0002] For the fixture for processing spline shafts, a center structure is usually adopted, but the center can only limit the axial direction of the spline shaft, and cannot limit its circumference. Existing related solutions, such as a fixture for boring ear holes of spline shafts disclosed in the patent document with publication number CN106141749A, adopts V-blocks and performance positioning, but the actual limitation of its circumferential direction is also poor. Utility Model Content

[0003] In order to solve the above technical problems, the utility model provides a spline shaft positioning tool, which can quickly and effectively position and lock the spline shaft, is very convenient to operate, and has more stable positioning.

[0004] The utility model solves the technical problem by adopting a technical solution: a spline shaft positioning tool, comprising a driving top and a tailstock top coaxially arranged on a machine body, characterized in that:

[0005] It comprises a spline sleeve, the inner wall of which is provided with an internal spline adapted to the spline shaft;

[0006] The spline sleeve is arranged on a linear drive device, and the linear drive device drives the spline sleeve to move axially along the spline shaft.

[0007] Beneficial effects of the utility model:

[0008] When in use, the spline sleeve is moved toward one end of the driving top or the tailstock top through the linear drive device so that the spline shaft is placed between the driving top and the tailstock top, and the two ends of the spline shaft are axially fixed by the driving top and the tailstock top. Then, the spline sleeve is moved toward the middle part, that is, the outer spline part of the spline shaft, so as to adapt the spline sleeve to the spline shaft to limit the freedom of circular rotation of the spline shaft, thereby realizing the positioning of the two degrees of freedom of the spline axial and circumferential, and the spline shaft can be well locked.

[0009] The above solution can quickly and effectively position and lock the spline shaft, the operation is very convenient, and the positioning is more stable.

[0010] Preferably, the linear drive device is a three-axis cylinder, so as to move the spline sleeve smoothly.

[0011] Preferably, the spline sleeve and the three-axis cylinder are relatively fixed via a connecting frame, thereby making the arrangement of the three-axis cylinder more flexible.

[0012] Preferably, the spline sleeve is detachably connected to the connecting frame, so as to facilitate replacement of different spline sleeves so as to lock spline shafts of different thicknesses.

[0013] Preferably, the spline sleeve is provided with a flange bolted to the connecting member, so as to facilitate a more convenient fixed connection of the spline sleeve.

[0014] Preferably, a guide cylinder is provided outside the driving tip, the guide cylinder is fixed relative to the machine body, the spline sleeve is fitted over the guide cylinder, and the spline sleeve can slide axially relative to the guide cylinder but cannot rotate circumferentially. The spline sleeve is connected by the guide cylinder, which can guide the spline sleeve on the one hand and improve the strength of the circumferential positioning of the spline sleeve on the other hand.

[0015] Preferably, the guide cylinder and the front section of the spline sleeve are matched through an axially arranged keyway, which can well achieve the effect of relative axial sliding of the guide cylinder and the spline sleeve.

[0016] Preferably, the spline sleeve is provided with a return spring, and the two ends of the return spring abut against the flange and the body respectively, so that the spline sleeve can be pushed toward the middle by the return spring, avoiding the use of a cylinder, and making the operation more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only two of the drawings of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 A schematic diagram of an embodiment of the utility model;

[0019] Figure 2 It is a schematic diagram of an embodiment of the utility model without a spline sleeve;

[0020] Among them, there are a spline shaft 1, a driving center 2, a tailstock center 3, a linear drive device 4, a guide cylinder 5, a return spring 6, a connecting frame 7, and a spline sleeve 8. DETAILED DESCRIPTION

[0021] In order to deepen the understanding of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. The embodiments are only used to explain the present invention and do not limit the protection scope of the present invention.

[0022] Example

[0023] like Figure 1As shown, a spline shaft 1 positioning tool includes a driving top 2 and a tailstock top 3 coaxially arranged on a machine body, including a spline sleeve 8, the inner wall of the spline sleeve 8 is provided with an internal spline adapted to the spline shaft 1; the spline sleeve 8 is arranged on a linear drive device 4, and the linear drive device 4 drives the spline sleeve 8 to move axially along the spline shaft 1.

[0024] Beneficial effects of the utility model:

[0025] When in use, the spline sleeve 8 is moved toward one end of the driving top 2 or the tail stock top 3 through the linear drive device 4, so that the spline shaft 1 is placed between the driving top 2 and the tail stock top 3, and the two ends of the spline shaft 1 are axially fixed by the driving top 2 and the tail stock top 3, and then the spline sleeve 8 is adapted to the spline shaft 1 by moving toward the middle part, that is, the outer spline part of the spline shaft 1, so as to limit the freedom of the circumferential rotation of the spline shaft 1, thereby realizing the positioning of the two degrees of freedom of the spline shaft 1 in the axial direction and the circumference, and the spline shaft 1 can be well locked.

[0026] The above solution can quickly and effectively position and lock the spline shaft 1, the operation is very convenient, and the positioning is more stable.

[0027] The linear drive device 4 is a three-axis cylinder so as to move the spline sleeve 8 smoothly.

[0028] The spline sleeve 8 and the three-axis cylinder are relatively fixed via the connecting frame 7. Thus, the three-axis cylinder is more flexible.

[0029] The spline sleeve 8 is detachably connected to the connecting frame 7, so that different spline sleeves 8 can be easily replaced to lock spline shafts 1 of different thicknesses.

[0030] The spline sleeve 8 is provided with a flange that is bolted to the connector, so as to facilitate the spline sleeve 8 to be fixedly connected more conveniently.

[0031] A guide cylinder 5 is disposed outside the driving tip 2, the guide cylinder 5 is fixed relative to the machine body, the spline sleeve 8 is fitted over the guide cylinder 5, and the spline sleeve 8 can slide axially relative to the guide cylinder 5 but cannot rotate circumferentially. The spline sleeve 8 is connected by the guide cylinder 5, which can guide the spline sleeve 8 on the one hand, and improve the strength of the circumferential positioning of the spline sleeve 8 on the other hand.

[0032] The guide cylinder 5 and the front section of the spline sleeve 8 cooperate with each other through a keyway arranged in the axial direction, so that the guide cylinder 5 and the spline sleeve 8 can slide relative to each other in the axial direction.

[0033] The spline sleeve 8 is covered with a return spring 6, and the two ends of the return spring 6 are respectively against the flange and the body, so that the spline sleeve 8 can be pushed toward the middle by the return spring 6, avoiding the use of a cylinder, and the operation is more convenient.

[0034] The front end of the spline sleeve 8 is axially provided with a keyway, and the rear section is provided with an internal spline. The spline sleeve 8 is always matched with the guide tube 5.

[0035] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0036] The above-mentioned embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the utility model patent. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the attached claims.

Claims

1. A spline shaft (1) positioning tool, comprising a driving center (2) and a tailstock center (3) coaxially arranged on a machine body, characterized in that: It comprises a spline sleeve (8), the inner wall of which is provided with an internal spline adapted to the spline shaft (1); The spline sleeve (8) is arranged on a linear drive device (4), and the linear drive device (4) drives the spline sleeve (8) to move axially along the spline shaft (1).

2. A spline shaft (1) positioning tool according to claim 1, characterized in that: The linear drive device (4) is a three-axis cylinder.

3. A spline shaft (1) positioning tool according to claim 2, characterized in that: The spline sleeve (8) and the three-axis cylinder are relatively fixed via a connecting frame (7).

4. A spline shaft (1) positioning tool according to claim 3, characterized in that: The spline sleeve (8) is detachably connected to the connecting frame (7).

5. A spline shaft (1) positioning tool according to claim 4, characterized in that: The spline sleeve (8) is provided with a flange which is bolted to the connecting piece.

6. A spline shaft (1) positioning tool according to claim 5, characterized in that: A guide cylinder (5) is arranged outside the driving tip (2), the guide cylinder (5) is fixed relative to the machine body, the spline sleeve (8) is externally mounted on the guide cylinder (5), and the spline sleeve (8) can slide axially relative to the guide cylinder (5) but cannot rotate in a circular motion.

7. A spline shaft (1) positioning tool according to claim 6, characterized in that: The guide cylinder (5) is matched with the front section of the spline sleeve (8) via a keyway arranged axially.

8. A spline shaft (1) positioning tool according to claim 7, characterized in that: The spline sleeve (8) is covered with a return spring (6), and two ends of the return spring (6) are respectively pressed against the flange and the machine body.

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