A tool for processing an ultra-long internal spline sleeve

Abstract

The utility model belongs to the inner spline sleeve processing technical field discloses a kind of tooling of processing super-long inner spline sleeve, including the vice frame device for supporting inner spline sleeve upper part adjustment, further including the main body device for connecting machine tool and driving rotating inner spline sleeve processing, main body device bottom middle is provided with the positioning device for the elastic push of inner spline sleeve bottom centering, vice frame device is installed in main body device top;Main body device includes base bottom plate, and base bottom plate is provided with support platform, and rotating platform is rotatably installed in support platform middle;Positioning device includes limiting sleeve, and receiving cavity is provided in limiting sleeve, spring is provided in receiving cavity, and centering assembly is slidably installed in limiting sleeve middle. The tooling of processing super-long inner spline sleeve of the utility model, the positioning cone of spring push can automatically compensate workpiece length error, avoid the stress concentration caused by rigid contact, while limiting slide column structure prevents excessive displacement, avoids inner spline sleeve bottom end measurement centering, improves the convenience of clamping.

Description

Technical Field

[0001] This utility model belongs to the field of internal spline sleeve processing technology, and in particular relates to a tooling for processing extra-long internal spline sleeves. Background Technology

[0002] Internal spline sleeves, as core components of mechanical transmission systems, play an irreplaceable role in the field of precision power transmission. Their unique structural design enables high torque transmission and precise axial positioning, making them widely used in automotive transmissions, construction machinery, and aerospace equipment. Modern manufacturing technology has brought the machining accuracy and reliability of internal spline sleeves to new heights, providing crucial support for improving the performance of industrial equipment. Internal spline sleeves are precision mechanical parts made by machining specific tooth profiles into the surface of their inner bore, allowing them to form a tight mesh with matching shafts. When machining extra-long internal spline sleeves using gear shaping, the most important consideration is ensuring that the internal spline sleeve and the center of the gear are coaxial; this requires specialized tooling.

[0003] Comparing this to Chinese patent CN201922135U, a fixture for machining extra-long internal spline sleeves is disclosed. It includes a positioning flange, a fixture, a washer, a work platform, and adjusting screws. The work platform has a groove in the middle. The fixture is fixed to the upper surface of the work platform, and its sidewalls are machined with several screw holes perpendicular to its center, each fitted with an adjusting screw. The washer is placed in the groove of the work platform, and the positioning flange is fastened to the fixture. By placing the workpiece in the groove of the work platform, the machining length of the workpiece is extended. By adjusting the thickness of the washer, internal spline sleeves of different lengths can be machined. The fixture facilitates workpiece clamping and ensures machining stability. Using this fixture to machine internal spline sleeves increases the machining range of the workpiece, enabling the machining of extra-long internal spline sleeves in a single operation.

[0004] However, the aforementioned patent requires the use of gauges to measure and calibrate the inner hole using two calibration bands, which increases the difficulty of alignment and reduces the convenience of clamping. Therefore, a new device needs to be designed. Utility Model Content

[0005] The purpose of this invention is to provide a tooling for processing extra-long internal spline sleeves, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A tooling for machining extra-long internal spline sleeves includes a subframe device for supporting and adjusting the upper part of the internal spline sleeve, and a main body device for connecting to a machine tool and driving the rotation of the internal spline sleeve for machining. The main body device has a positioning device at the bottom center for elastically pushing and centering the bottom of the internal spline sleeve. The subframe device is mounted on the top of the main body device. The main body device includes a base plate, a support platform on the base plate, a rotary table rotatably mounted in the center of the support platform, a drive assembly for providing rotational power on the outer side of the rotary table, and a clearance hole in the center of the rotary table.

[0008] The positioning device includes a limiting sleeve, a receiving cavity is provided inside the limiting sleeve, a spring is provided inside the receiving cavity, and a centering component is slidably installed in the middle of the limiting sleeve;

[0009] The subframe device includes a support component for fixing the inner spline sleeve, and the support component has three adjusting screws evenly distributed around its circumference for adjusting the upper part of the inner spline sleeve.

[0010] Furthermore: the drive assembly includes a passive gear ring mounted on the outer periphery of the rotary table, a drive gear meshing on one side of the passive gear ring, a servo motor disposed in the middle of the drive gear, and the servo motor and the support table being bolted together.

[0011] Furthermore, the base plate has four mounting holes evenly distributed at its four corners, and the mounting holes are U-shaped grooves.

[0012] Furthermore: the centering component includes a limiting slide post, the top of the limiting slide post is provided with a positioning cone, and the bottom of the limiting slide post is provided with a limiting plate.

[0013] Furthermore, the positioning cone and the rotary table are coaxial.

[0014] Furthermore: the supporting assembly includes a flange base plate, a support column is provided in the middle of the flange base plate, a flange top plate is provided at the top of the support column, and a through hole is provided through the flange base plate, the support column and the flange top plate.

[0015] Furthermore, three reinforcing ribs are evenly arranged between the flange base plate and the flange top plate, and the reinforcing ribs are staggered with the adjusting screws.

[0016] Compared with existing technologies, the beneficial effects are:

[0017] 1. The spring-push positioning cone can automatically compensate for workpiece length errors, avoid stress concentration caused by rigid contact, and at the same time, the limiting sliding column structure prevents excessive displacement, ensures positioning stability, avoids the need for measurement and centering at the bottom of the inner spline sleeve, and improves the convenience of clamping.

[0018] 2. Through the collaborative design of flexible positioning, dual-end adjustment and high-efficiency drive, the core problems of coaxiality control, clamping efficiency and stability in the machining of ultra-long internal spline sleeves have been overcome. It has the advantages of high precision, easy operation and low cost, and is suitable for high-requirement scenarios in aerospace, heavy machinery and other fields.

[0019] 3. By combining the bottom elastic positioning device (spring-driven positioning cone) with the top three-screw adjustment mechanism, dynamic alignment of the upper and lower ends of the inner spline sleeve is achieved, ensuring that the inner spline sleeve and the center of the gear are strictly coaxial during processing, thus solving the problem of easy skewing of ultra-long workpieces.

[0020] 4. The three top adjusting screws, in conjunction with the gauge, achieve micron-level calibration, simplifying the centering process for ultra-long workpieces and significantly shortening the clamping time; the staggered distribution of the reinforcing ribs and adjusting screws avoids adjustment interference. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the tooling for processing extra-long inner spline sleeves according to the present invention;

[0022] Figure 2 This is a schematic diagram of the main device of the tooling for processing extra-long inner spline sleeves according to the present invention;

[0023] Figure 3 This is a front view of the main device of the tooling for processing extra-long inner spline sleeves according to this utility model;

[0024] Figure 4 This is a cross-sectional view of the positioning device for a tooling for processing extra-long inner spline sleeves as described in this utility model;

[0025] Figure 5 This is a schematic diagram of the subframe device of the tooling for processing extra-long inner spline sleeves according to the present invention;

[0026] Figure 6 This is a top perspective view of the subframe device of the tooling for processing extra-long inner spline sleeves according to the present invention.

[0027] In the attached diagram, the following are the reference numerals: 101, base plate; 102, mounting hole; 103, support platform; 104, rotary table; 105, driven gear ring; 106, driving gear; 107, servo motor; 108, clearance hole; 201, limiting sleeve; 202, storage cavity; 203, spring; 204, limiting slide column; 205, positioning cone; 206, limiting plate; 301, flange base plate; 302, support column; 303, flange top plate; 304, reinforcing rib; 305, adjusting screw; 306, through hole. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] Please see Figures 1-6 A tooling for machining extra-long internal spline sleeves includes a sub-frame device for supporting the upper adjustment of the internal spline sleeve, and a main body device for connecting to a machine tool and driving the rotation of the internal spline sleeve for machining. A positioning device for elastically pushing the bottom of the internal spline sleeve to center is provided in the middle of the bottom of the main body device, and the sub-frame device is installed on the top of the main body device.

[0030] In this embodiment: the main device includes a base plate 101, a support platform 103 is provided on the base plate 101, a rotary table 104 is rotatably mounted in the middle of the support platform 103, a drive assembly for providing rotational power is provided on the outer side of the rotary table 104, and a clearance hole 108 is provided in the middle of the rotary table 104; the drive assembly includes a passive gear ring 105 mounted on the outer periphery of the rotary table 104, a drive gear 106 meshing on one side of the passive gear ring 105, a servo motor 107 is provided in the middle of the drive gear 106, and the servo motor 107 is bolted to the support platform 103; the base plate 101 Four mounting holes 102 are evenly distributed at the four corners. The mounting holes 102 are U-shaped grooves. The base plate 101 is fixed to the gear shaping machine through the mounting holes 102. The flange base plate 301 is fixed to the rotary table 104. The clearance hole 108 is used to allow the inner spline sleeve to pass through the rotary table 104. When the gear shaping machine performs gear shaping on the inner spline sleeve, the support table 103 supports the servo motor 107 to drive the drive gear 106 to mesh with the passive gear ring 105 to drive the rotary table 104 to rotate. The rotary table 104 then drives the support column 302, the flange top plate 303, and the inner spline sleeve to rotate through the flange base plate 301.

[0031] In this embodiment: the positioning device includes a limiting sleeve 201, a receiving cavity 202 is provided inside the limiting sleeve 201, a spring 203 is provided inside the receiving cavity 202, and a centering component is slidably installed in the middle of the limiting sleeve 201; the centering component includes a limiting slide post 204, a positioning cone 205 is provided at the top of the limiting slide post 204, and a limiting plate 206 is provided at the bottom of the limiting slide post 204; the positioning cone 205 and the rotating table 104 are coaxial; during installation and fixing, the positioning cone 205 is coaxial with the center of the gear circle, the bottom end of the inner spline sleeve passes through the through hole 306 and the clearance hole 108, and is inserted into the positioning cone 205; the spring 203 in the receiving cavity 202 of the limiting sleeve 201 pushes the limiting slide post 204 up along the limiting sleeve 201 through elastic force, so that the positioning cone 205 pushes the bottom end of the inner spline sleeve for positioning;

[0032] In this embodiment: the subframe device includes a support assembly for fixing the inner spline sleeve. Three adjusting screws 305 are evenly distributed around the circumference of the support assembly for adjusting the upper part of the inner spline sleeve. The support assembly includes a flange base plate 301, a support column 302 is disposed in the middle of the flange base plate 301, and a flange top plate 303 is disposed at the top of the support column 302. A through hole 306 is provided through the flange base plate 301, the support column 302, and the flange top plate 303. A through hole 306 is evenly distributed between the flange base plate 301 and the flange top plate 303. Three reinforcing ribs 304 are staggered with the adjusting screws 305. The flange base plate 301 is fixed on the rotary table 104. The inner spline sleeve is inserted into the through hole 306 of the flange top plate 303, the support column 302 and the flange base plate 301. The three adjusting screws 305 on the circumference of the support column 302 are rotated respectively. The top of the inner spline sleeve is adjusted by the calibration band on the inner hole of the inner spline sleeve to make the top of the inner spline sleeve coaxial with the center of the tooth circle. Then the bolts are tightened to press and fix the top of the inner spline sleeve to the flange top plate 303.

[0033] Working principle: First, the base plate 101 is fixed to the gear hobbing machine through the mounting hole 102, and the positioning cone 205 is made coaxial with the center of the gear hobbing circle. Then, the flange base plate 301 is fixed on the rotary table 104. Next, the inner spline sleeve is inserted into the through hole 306 of the flange top plate 303, the support column 302, and the flange base plate 301, so that the bottom end of the inner spline sleeve passes through the through hole 306 and the clearance hole 108 and is inserted into the positioning cone 205. Then, the top end of the inner spline sleeve is slightly fixed to the flange top plate 303 with bolts. At this time, the spring 203 in the receiving cavity 202 of the limiting sleeve 201 pushes the limiting slide column 204 to rise along the limiting sleeve 201 through the elastic force. The positioning cone 205 pushes the bottom end of the inner spline sleeve to position it. Then, the three adjusting screws 305 on the circumference of the support column 302 are rotated respectively. The gauge is used to adjust the top of the inner spline sleeve with the calibration band at the top of the inner hole of the inner spline sleeve so that the top of the inner spline sleeve is coaxial with the center of the gear. Then, the bolts are tightened to press and fix the top of the inner spline sleeve to the flange top plate 303. When the gear hobbing machine performs gear hobbing on the inner spline sleeve, the support table 103 supports the servo motor 107 to drive the active gear 106 to mesh with the passive gear ring 105 to drive the rotary table 104 to rotate. The rotary table 104 drives the support column 302, the flange top plate 303, and the inner spline sleeve to rotate through the flange bottom plate 301.

[0034] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A tooling for machining extra-long inner spline sleeves, comprising a subframe device for supporting the upper adjustment of the inner spline sleeve, characterized in that: It also includes a main body device for connecting a machine tool and driving the rotation of the inner spline sleeve for machining. The bottom center of the main body device is provided with a positioning device for elastically pushing the bottom of the inner spline sleeve to center. The sub-frame device is installed on the top of the main body device. The main device includes a base plate (101), a support platform (103) is provided on the base plate (101), a rotating platform (104) is rotatably installed in the middle of the support platform (103), a drive component for providing rotational power is provided on the outside of the rotating platform (104), and a clearance hole (108) is provided in the middle of the rotating platform (104). The positioning device includes a limiting sleeve (201), a receiving cavity (202) is provided inside the limiting sleeve (201), a spring (203) is provided inside the receiving cavity (202), and a centering component is slidably installed in the middle of the limiting sleeve (201). The subframe device includes a support assembly for fixing the inner spline sleeve, and the support assembly has three adjusting screws (305) evenly distributed around its circumference for adjusting the upper part of the inner spline sleeve.

2. The tooling for machining extra-long internal spline sleeves according to claim 1, characterized in that: The drive assembly includes a passive gear ring (105) mounted on the outer periphery of the rotary table (104), a drive gear (106) meshing on one side of the passive gear ring (105), a servo motor (107) disposed in the middle of the drive gear (106), and the servo motor (107) and the support table (103) being bolted together.

3. The tooling for machining extra-long internal spline sleeves according to claim 2, characterized in that: The base plate (101) has four mounting holes (102) evenly distributed at its four corners, and the mounting holes (102) are U-shaped grooves.

4. The tooling for machining extra-long internal spline sleeves according to claim 1, characterized in that: The centering component includes a limiting slide post (204), the top of which is provided with a positioning cone (205), and the bottom of which is provided with a limiting plate (206).

5. The tooling for machining extra-long internal spline sleeves according to claim 4, characterized in that: The positioning cone (205) and the rotating table (104) are coaxial.

6. The tooling for machining extra-long internal spline sleeves according to claim 1, characterized in that: The supporting assembly includes a flange base plate (301), a support column (302) is provided in the middle of the flange base plate (301), a flange top plate (303) is provided at the top of the support column (302), and a through hole (306) is provided through the flange base plate (301), the support column (302) and the flange top plate (303).

7. The tooling for machining extra-long internal spline sleeves according to claim 6, characterized in that: Three reinforcing ribs (304) are evenly arranged between the flange base plate (301) and the flange top plate (303), and the reinforcing ribs (304) are staggered with the adjusting screws (305).

Images