Spline precision positioning device for machining

Abstract

The utility model relates to the technical field of spline precision positioning, in particular to a spline precision positioning device for machining, which comprises an inner cylinder mechanism, an outer cylinder mechanism and a connecting mechanism, and avoids influence on machining accuracy due to axial instability during operation through a mode that an inner cylinder groove and an outer cylinder bump are symmetrically arranged about the axis of a spline shaft. Compared with a traditional transmission mode, the positioning connection mode is more accurate in centering, meanwhile, the bearing capacity is higher, and the stability of machining operation is greatly improved. The flange outer ring is fixedly installed on the stable portion of equipment through the annular limiting groove, the balls, the retainer and the flange outer ring which are arranged on the connecting mechanism, when the spline shaft rotates, the spline outer cylinder is driven to rotate synchronously, and the flange outer ring and the side base are movably connected with the spline outer cylinder through the balls. Therefore, the flange outer ring and the side seat play a role in stabilizing and limiting the spline shaft, the spline shaft is prevented from deforming and deviating from the axis due to overlength, and the positioning precision and the machining quality are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of spline precision positioning, in particular to a spline precision positioning device for machining. Background Art

[0002] The spline connection consists of an internal spline and an external spline. Both internal and external splines are multi-tooth parts. The spline on the inner cylindrical surface is the internal spline, and the spline on the outer cylindrical surface is the external spline. This device is suitable for connections with high centering accuracy requirements, large torque transmission or frequent slippage, and is an indispensable device in the machining industry.

[0003] As disclosed in the authorization announcement number CN216802517U, a spline precision positioning device for machining includes a mounting seat, the mounting seat is fixedly mounted on the equipment, a clamping seat is fixedly mounted on the left side of the mounting seat, a spring is arranged in the mounting seat, a top cone is arranged on the outside of the spring, and a spline is inserted and installed in the clamping seat. In the spline precision positioning device for machining, the plug column of the mounting seat is inserted into the equipment to enhance stability, and the mounting seat is disassembled and assembled by bolts to facilitate maintenance and repair. The clamping seat is installed on the mounting seat by bolts to facilitate replacement of the clamping seat corresponding to splines of different sizes. The key teeth on the outside of the spline are meshed with the positioning teeth in the clamping seat to position the direction axis of the spline. The end face positioning groove is used to position the length of the workpiece, so that the spline will not form interference when inserted into the clamping seat. When the workpiece is placed in the fixture, the tailstock is tightened, and the top cone is forced to press the spring, thereby positioning the center of the spline. However, the device has a complex structure and lacks axial limiting measures, making it not suitable for axial connections with longer lengths in machining operations. To this end, we propose a spline precision positioning device for machining, which has a simple structure and precise positioning, and improves the axial stability and ease of operation of the device. Utility Model Content

[0004] The purpose of the utility model is to provide a spline precision positioning device for machining to solve the problems raised in the above background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A spline precision positioning device for machining includes an inner cylinder mechanism, an outer cylinder mechanism and a connecting mechanism, wherein the outer cylinder mechanism is located outside the inner cylinder mechanism, and the connecting mechanism is located outside the outer cylinder mechanism. The inner cylinder mechanism includes a spline shaft and an inner cylinder groove, wherein the inner cylinder groove is arranged on the outer surface of the spline shaft and symmetrically to the axis, and three pairs of inner cylinder grooves are arranged.

[0007] Preferably, the outer cylinder mechanism includes a spline outer cylinder, an outer cylinder protrusion, a docking screw hole, an end recess and an annular gasket, the spline outer cylinder is a hollow cylinder, the outer cylinder protrusion is arranged on the inner wall of the spline outer cylinder, and the outer cylinder protrusion is arranged in a one-to-one correspondence with the inner cylinder groove.

[0008] Preferably, the butt screw holes are arranged at both ends of the spline outer cylinder, the end recesses are arranged at both ends of the spline outer cylinder, and the annular gasket is fixedly installed inside the end recesses.

[0009] Preferably, the connecting mechanism comprises an annular limiting groove, a ball, a retainer, a flange outer ring, a sealing gasket, an intermediate seat and a side seat, and the annular limiting groove is arranged on the outside of the spline outer cylinder.

[0010] Preferably, a retainer is provided between the balls, and the balls are movably mounted inside the annular limiting groove.

[0011] Preferably, the flange outer ring is movably mounted on the outside of the spline outer cylinder and covers the annular limiting groove, and the sealing gasket is arranged on one side of the annular limiting groove.

[0012] Preferably, the intermediate seat is arranged on one side of the outer ring of the flange, and the side seat is arranged on one side of the intermediate seat. Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. This spline precision positioning device for machining, by putting the inner cylinder groove set on the outer side of the spline shaft into the spline outer cylinder, so that the inner cylinder groove and the outer cylinder protrusion slide in correspondence with each other, the inner cylinder groove and the outer cylinder protrusion are both symmetrically arranged with the axis of the spline shaft, avoiding axial instability during operation and affecting the accuracy of machining operations. In actual use, compared with the traditional transmission method, this positioning connection method is not only more accurate in centering, but also has a stronger load-bearing capacity, which greatly improves the stability of machining operations.

[0014] 2. This spline precision positioning device for machining uses an annular limit groove, ball bearings, retainers and flange outer rings provided by the connection mechanism to fix the flange outer ring in a stable position of the equipment. When the spline shaft rotates, the spline outer cylinder is driven to rotate synchronously, and the flange outer ring and the side seat are movably connected to the spline outer cylinder through the ball bearings, so that the flange outer ring and the side seat play a role in stabilizing the position of the spline shaft, avoiding deformation and deviation from the axis line caused by the spline shaft being too long, thereby improving the positioning accuracy and processing quality. The setting of the ball bearings can effectively reduce the friction resistance generated during the operation of the device, which not only prolongs the service life of the device, but also saves power and electrical energy consumption, thereby improving the practicality of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 It is a schematic diagram of the internal partial structure of the utility model;

[0017] Figure 3 For this utility model Figure 2 The enlarged schematic diagram of point A in the middle;

[0018] Figure 4 For this utility model Figure 2 A magnified schematic diagram of point B in the middle.

[0019] In the figure: 100, spline shaft; 101, inner cylinder groove; 200, spline outer cylinder; 201, outer cylinder protrusion; 202, docking screw hole; 203, end notch; 204, annular gasket; 300, annular limit groove; 301, ball; 302, retainer; 303, flange outer ring; 304, sealing gasket; 305, intermediate seat; 306, side seat. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] See also Figure 1-Figure 4 As shown, a technical solution provided by the utility model:

[0022] A spline precision positioning device for machining includes an inner cylinder mechanism, an outer cylinder mechanism and a connecting mechanism, wherein the outer cylinder mechanism is located outside the inner cylinder mechanism, and the connecting mechanism is located outside the outer cylinder mechanism. The inner cylinder mechanism includes a spline shaft 100 and an inner cylinder groove 101, wherein the inner cylinder groove 101 is arranged on the outer surface of the spline shaft 100 and is symmetrical to the axis, and three pairs of inner cylinder grooves 101 are arranged.

[0023] In this embodiment, preferably, the outer cylinder mechanism includes a spline outer cylinder 200, an outer cylinder protrusion 201, a docking screw hole 202, an end recess 203 and an annular gasket 204, the spline outer cylinder 200 is a hollow cylinder, the outer cylinder protrusion 201 is arranged on the inner wall of the spline outer cylinder 200, and the outer cylinder protrusion 201 is arranged one by one with the inner cylinder groove 101.

[0024] In this embodiment, preferably, the docking screw holes 202 are provided at both ends of the spline outer cylinder 200 , the end recesses 203 are provided at both ends of the spline outer cylinder 200 , and the annular gasket 204 is fixedly installed inside the end recesses 203 .

[0025] In this embodiment, preferably, the connecting mechanism includes an annular limit groove 300, a ball 301, a retainer 302, a flange outer ring 303, a sealing gasket 304, an intermediate seat 305 and a side seat 306, and the annular limit groove 300 is arranged on the outside of the spline outer cylinder 200.

[0026] In this embodiment, preferably, a retainer 302 is provided between the balls 301 , and the balls 301 are movably installed inside the annular limiting groove 300 .

[0027] In this embodiment, preferably, the flange outer ring 303 is movably mounted on the outside of the spline outer cylinder 200 and covers the annular limiting groove 300 , and the sealing gasket 304 is arranged on one side of the annular limiting groove 300 .

[0028] In this embodiment, preferably, the intermediate seat 305 is arranged on one side of the flange outer ring 303 , and the side seat 306 is arranged on one side of the intermediate seat 305 .

[0029] When the spline precision positioning device for machining of this embodiment is used, the inner cylinder groove 101 arranged on the outer side of the spline shaft 100 is correspondingly put into the spline outer cylinder 200, so that the inner cylinder groove 101 and the outer cylinder protrusion 201 are correspondingly fitted and slid with each other, and the inner cylinder groove 101 and the outer cylinder protrusion 201 are both arranged symmetrically to the axis of the spline shaft 100, so as to avoid axial instability during operation and affect the accuracy of machining operations. In actual use, compared with the traditional transmission method, this positioning connection method is not only more accurate in centering, but also has a stronger load-bearing capacity, which greatly improves the stability of machining operations. The flange outer ring 303 is fixedly installed at a stable position of the equipment through the annular limiting groove 300, the ball 301, the retainer 302 and the flange outer ring 303 provided by the connection mechanism. When the spline shaft 100 rotates, the spline outer cylinder 200 is driven to rotate synchronously, and the flange outer ring 303 and the side seat 306 are movably connected with the spline outer cylinder 200 through the ball 301, so that the flange outer ring 303 and the side seat 306 play a stable limiting role on the spline shaft 100, avoiding the spline shaft 100 from being too long and causing deformation and deviation from the axis center line, thereby improving the positioning accuracy and processing quality. The setting of the ball 301 can effectively reduce the friction resistance generated during the operation of the device, which not only prolongs the service life of the device, but also saves power and electric energy consumption, thereby improving the practicality of the device.

[0030] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A spline precision positioning device for machining, comprising an inner cylinder mechanism, an outer cylinder mechanism and a connecting mechanism, characterized in that: The outer cylinder mechanism is located outside the inner cylinder mechanism, the connecting mechanism is located outside the outer cylinder mechanism, the inner cylinder mechanism comprises a spline shaft (100) and an inner cylinder groove (101), the inner cylinder groove (101) is arranged on the outer surface of the spline shaft (100) and is symmetrical to the axis, and three pairs of inner cylinder grooves (101) are arranged.

2. A spline precision positioning device for machining according to claim 1, characterized in that: The outer cylinder mechanism comprises a spline outer cylinder (200), an outer cylinder protrusion (201), a butt screw hole (202), an end recess (203) and an annular gasket (204); the spline outer cylinder (200) is in the shape of a hollow cylinder; the outer cylinder protrusion (201) is arranged on the inner wall of the spline outer cylinder (200); and the outer cylinder protrusion (201) is arranged in a one-to-one correspondence with the inner cylinder groove (101).

3. A spline precision positioning device for machining according to claim 2, characterized in that: The butt screw holes (202) are arranged at both ends of the spline outer cylinder (200), the end recesses (203) are arranged at both ends of the spline outer cylinder (200), and the annular gasket (204) is fixedly installed inside the end recesses (203).

4. A spline precision positioning device for machining according to claim 1, characterized in that: The connection mechanism comprises an annular limiting groove (300), a ball (301), a retainer (302), a flange outer ring (303), a sealing gasket (304), an intermediate seat (305) and a side seat (306); the annular limiting groove (300) is arranged on the outside of the spline outer cylinder (200).

5. A spline precision positioning device for machining according to claim 4, characterized in that: A retainer (302) is provided between the balls (301), and the balls (301) are movably mounted inside the annular limiting groove (300).

6. A spline precision positioning device for machining according to claim 4, characterized in that: The flange outer ring (303) is movably mounted on the outside of the spline outer cylinder (200) and covers the annular limiting groove (300), and the sealing gasket (304) is arranged on one side of the annular limiting groove (300).

7. A spline precision positioning device for machining according to claim 4, characterized in that: The intermediate seat (305) is arranged on one side of the flange outer ring (303), and the side seat (306) is arranged on one side of the intermediate seat (305).

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