A special chuck for machining wheel hub bearings using high-end CNC equipment
By designing the chuck structure for high-end CNC machine tools, including the installation base, chuck body, drive mandrel and cylinder, the problem of automatic clamping and positioning efficiency and accuracy of workpieces in high-end CNC machine tools is solved, and the wheel hub is realized Accurate clamping and positioning of bearings improves machining efficiency and accuracy.
Patent Information
- Application Number
- CN202010047415.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2020-01-16
- Publication Date
- 2024-12-10
- Estimated Expiration
- 2040-01-16
AI Technical Summary
Existing high-end CNC machine tools have efficiency and accuracy problems in the automatic clamping and positioning of workpieces, especially when machining hub bearings, it is difficult to achieve accurate clamping and positioning.
A chuck structure including mounting base plate, chuck body, driving mandrel and cylinder is designed. The radial movement is carried out through the cylinder drive claw, and axial positioning is achieved using the positioning block and the axial limiting block, and the drive is carried out. Bearings and oil seals are provided on the mandrel to ensure the accuracy and stability of high-speed rotation.
Accurate clamping and positioning of the hub bearings is achieved, processing efficiency and accuracy is improved, impurities inside the chuck are avoided, and stability and precision machining are ensured under high-speed rotation.
Smart Images
Figure CN111136296B_ABST
Abstract
Description
[Technical field]
[0001] The invention relates to the technical field of numerical control equipment, in particular to a special chuck for machining hub bearings using high-end numerical control equipment. [Background technology]
[0002] As the main equipment in the current mechanical processing industry, the technological development of machine tools has become a symbol of the development of the domestic mechanical processing industry. CNC machine tools are the working mother machines of the manufacturing equipment industry and are strategic equipment for advanced production technology and military modernization. High-end CNC machine tools refer to digital CNC machine tool systems with functions such as high speed, precision, intelligence, compound, multi-axis linkage, and network communication. As a representative of the world's advanced machine tool equipment, the development of high-end CNC machine tools symbolizes that the country's current machine tool manufacturing industry occupies an advanced stage in the development of the world's machine tool industry. It is a product of the rapid development of science and technology, and for the country, this is an essential progress in the machine tool manufacturing industry. High-end CNC machine tools integrate a variety of high-end technologies and are used in complex curved surfaces and automated processing. They have a very close relationship with the equipment manufacturing industry in various fields such as aerospace, shipbuilding, machinery manufacturing, high-precision instruments, military industry, and medical equipment industry. For high-end CNC machine tools, the automatic clamping and positioning of workpieces are crucial to the efficiency of workpiece processing. A special chuck for processing wheel hub bearings for high-end CNC equipment is now proposed. [Summary of the invention]
[0003] The purpose of the present invention is to solve the problems in the prior art and to provide a special chuck for machining hub bearings using high-end CNC equipment. The chuck is suitable for machining hub bearings, is convenient for clamping hub bearings, and has accurate positioning.
[0004] To achieve the above-mentioned purpose, the present invention proposes a special chuck for processing wheel hub bearings of high-end CNC equipment, comprising a mounting base, a chuck body, a driving spindle and a cylinder, one end of the mounting base is mounted on a machine tool spindle mounting seat by bolts, the other end of the mounting base is provided with a cylinder and a chuck body in sequence, the chuck body is provided with claws and a positioning block, the cylinder is connected to the chuck body and is used to drive the claws to move radially, the positioning block is provided with an axial limit block, the axial limit block is arranged opposite to the claw, and a clamping cavity for clamping a workpiece is formed between the axial limit block and the claw, a driving spindle is provided in the mounting base, one end of the driving spindle is mounted on a driving flange by bolts and pins, the driving flange is mounted on the machine tool spindle and rotates synchronously with the machine tool spindle, and a driving ring is installed on the other end of the driving spindle.
[0005] Preferably, the positioning block includes a positioning mounting seat and an axial limit block, the end face of the positioning mounting seat is provided with an axial limit block bent outward along its axial direction, the positioning mounting seat is installed on one end face of the chuck body by bolts, the end face of the chuck body has a positioning mounting groove adapted to the positioning mounting seat, the chuck body has a first central cavity for the driving shaft to pass through, the positioning mounting seat has a second central cavity for the driving shaft to pass through, the first central cavity is coaxially arranged with the second central cavity, a bearing for supporting the driving shaft is installed in the second central cavity, and an oil seal for sealing is also installed at one end of the second central cavity.
[0006] Preferably, the end of the drive shaft on which the drive ring is installed has a reduced diameter portion, and the drive ring is fixedly installed on the reduced diameter portion of the drive shaft by a key and a second top screw. The outer surface of the drive ring has a toothed portion that can cooperate with the part for shifting, and the inner wall of the drive ring has a keyway.
[0007] Preferably, a pipe joint mounting seat is provided on one side of the mounting base close to the cylinder, and the pipe joint mounting seat is used to fix the gas and oil pipes of the cylinder.
[0008] Preferably, a plurality of first top screws are further provided on the outer periphery of the mounting base.
[0009] Preferably, a slot for installing a clamping claw is provided on the chuck body, and the clamping claw is installed in the slot of the chuck body by means of bolts.
[0010] The beneficial effects of the present invention are as follows: the present invention cooperates with the installation base, the chuck body, the driving spindle and the cylinder, etc. The cylinder is connected to the chuck body to provide power for the chuck body, the claws are installed on the chuck body by bolts to clamp the workpiece, which can ensure the radial size of the workpiece, the positioning block on the end face of the chuck body can ensure the axial size of the workpiece, and at the same time, a bearing is arranged in the positioning block to support the driving spindle, thereby ensuring the accuracy and stability under high-speed rotation, and the oil seal can prevent impurities from entering the chuck body.
[0011] The features and advantages of the present invention will be described in detail through embodiments in conjunction with the accompanying drawings.
Brief Description of the Drawings
[0012] Figure 1 It is a schematic diagram of the cross-sectional structure of a special chuck for machining hub bearings using high-end numerical control equipment according to the present invention;
[0013] Figure 2 The utility model is a right side view of a driving ring of a special chuck for machining a hub bearing by a high-end numerical control equipment according to the present invention. [Specific implementation method]
[0014] See also Figure 1 to Figure 2The present invention discloses a special chuck for machining wheel hub bearings of high-end numerical control equipment, comprising a mounting base 1, a chuck body 2, a driving spindle 3 and a cylinder 4. One end of the mounting base 1 is mounted on a machine tool spindle mounting seat by bolts, and the other end of the mounting base 1 is provided with a cylinder 4 and a chuck body 2 in sequence. The chuck body 2 is provided with a clamping claw 21 and a positioning block 22. The cylinder 4 is connected to the chuck body 2 and is used to drive the clamping claw 21 to move radially. The positioning block 22 has an axial limit block 222, which is arranged opposite to the clamping claw 21, and a clamping cavity for clamping a workpiece is formed between the axial limit block 222 and the clamping claw 21. A driving spindle 3 is provided in the mounting base 1, and one end of the driving spindle 3 is mounted on a driving flange 31 by bolts and pins. The driving flange 31 is mounted on the machine tool spindle and rotates synchronously with the machine tool spindle. A driving ring 32 is installed on the other end of the driving spindle 3.
[0015] Furthermore, the positioning block 22 includes a positioning mounting seat 221 and an axial limit block 222. The end face of the positioning mounting seat 221 is provided with an axial limit block 222 bent outward along its axial direction. The positioning mounting seat 221 is installed on one end face of the chuck body 2 by bolts. The end face of the chuck body 2 has a positioning mounting groove adapted to the positioning mounting seat 221. The chuck body 2 has a first central cavity for the drive shaft 3 to pass through, and the positioning mounting seat 221 has a second central cavity for the drive shaft 3 to pass through. The first central cavity is coaxially arranged with the second central cavity, and a bearing 223 for supporting the drive shaft 3 is installed in the second central cavity. An oil seal 224 for sealing is also installed at one end of the second central cavity.
[0016] Furthermore, the end of the drive shaft 3 on which the drive ring 32 is installed has a reduced diameter portion 30, and the drive ring 32 is fixedly installed on the reduced diameter portion 30 of the drive shaft 3 by a key and a second top screw. The outer surface of the drive ring 32 has a toothed portion 320 that can be moved in coordination with the parts, and the inner wall of the drive ring 32 has a keyway.
[0017] Furthermore, a pipe joint mounting seat 10 is provided on one side of the mounting base 1 close to the cylinder 4, and the pipe joint mounting seat 10 is used to fix the gas and oil pipes of the cylinder 4 for easy installation and fixation.
[0018] Furthermore, a plurality of first top screws 11 are provided on the outer periphery of the mounting base 1 to adjust the precision and fix the base.
[0019] Furthermore, a slot 210 for mounting the clamping claw 21 is provided on the chuck body 2 , and the clamping claw 21 is mounted in the slot 210 of the chuck body 2 by means of bolts.
[0020] Working principle of the present invention:
[0021] The mounting base 1 is mounted on the machine tool spindle mounting seat by bolts and top screws, the pipe joint mounting seat 10 is connected to the mounting base 1 by bolts to facilitate the installation of the gas and oil pipes, the cylinder 4 is connected to the chuck body 2 by bolts to provide power to the chuck body 2, the claw 21 is mounted on the chuck by bolts to clamp the outer ring of the hub bearing 100 to ensure the radial size of the workpiece, the positioning block 22 is installed on the end face of the chuck to ensure the axial size of the workpiece, and the driving flange 31 is installed on the spindle to make a rotary motion with the spindle. Among them, the inner ring of the hub bearing 100 rotates with the driving spindle 3, and the outer ring of the hub bearing 100 does not rotate, that is, the claw 21 and the positioning block 22 on the chuck body 2 do not rotate, and only the driving spindle 3 rotates with the spindle. The driving spindle 3 is installed on the driving flange 31 by bolts, and the rotational rigidity is ensured by bolts and pins. A bearing 223 is installed between the driving spindle 3 and the positioning block 22 to ensure accuracy and stability under high-speed rotation. An oil seal 224 is installed in the groove position of the end face of the positioning block 22 to ensure that iron filings and other debris do not enter the chuck. The driving ring 32 is installed and connected by a top screw, and the rotational motion is transmitted by a key. The outer surface of the driving ring 32 is a toothed portion that can be moved with the parts.
[0022] The above embodiments are intended to illustrate the present invention, not to limit the present invention. Any solution that is a simple transformation of the present invention belongs to the protection scope of the present invention.
Claims
1. A special chuck for machining wheel hub bearings using high-end CNC equipment, characterized in that: The invention comprises a mounting base (1), a chuck body (2), a driving spindle (3) and a cylinder (4), wherein one end of the mounting base (1) is mounted on a machine tool spindle mounting seat by means of bolts, and the other end of the mounting base (1) is provided with a cylinder (4) and a chuck body (2) in sequence, wherein the chuck body (2) is provided with a clamping claw (21) and a positioning block (22), wherein the cylinder (4) is connected to the chuck body (2) and is used for driving the clamping claw (21) to move radially, and the positioning block (22) is provided with an axial limit block (222), and the axial limit block (222) is provided with a plurality of movable parts. The axial limit block (222) is arranged opposite to the claw (21), and a clamping cavity for clamping a workpiece is formed between the axial limit block (222) and the claw (21). A driving spindle (3) is provided in the mounting base (1). One end of the driving spindle (3) is mounted on a driving flange (31) by means of bolts and pins. The driving flange (31) is mounted on a machine tool spindle and rotates synchronously with the machine tool spindle. A driving ring (32) is mounted on the other end of the driving spindle (3). The positioning block (22) includes a positioning mounting seat (221) and an axial limit block (222). ), an end surface of the positioning mounting seat (221) is provided with an axial limit block (222) bent outwardly along its axial direction, the positioning mounting seat (221) is mounted on one end surface of the chuck body (2) by means of bolts, the end surface of the chuck body (2) is provided with a positioning mounting groove matched with the positioning mounting seat (221), the chuck body (2) has a first central cavity for the drive spindle (3) to pass through, the positioning mounting seat (221) has a second central cavity for the drive spindle (3) to pass through, the first central cavity and the second central cavity are The drive ring (32) is coaxially arranged, a bearing (223) for supporting the drive core shaft (3) is installed in the second central cavity, and an oil seal (224) for sealing is also installed at one end of the second central cavity; the end of the drive core shaft (3) on which the drive ring (32) is installed has a reduced diameter portion (30), the drive ring (32) is fixedly installed on the reduced diameter portion (30) of the drive core shaft (3) by means of a key and a second top screw, the outer surface of the drive ring (32) has a toothed portion (320) that can be moved in cooperation with a part, and the inner wall of the drive ring (32) has a keyway.
2. A special chuck for machining hub bearings with high-end CNC equipment as claimed in claim 1, characterized in that: A pipe joint mounting seat (10) is provided on one side of the mounting base (1) close to the cylinder (4), and the pipe joint mounting seat (10) is used to fix the gas and oil pipes of the cylinder (4).
3. A special chuck for machining hub bearings with high-end CNC equipment as claimed in claim 1, characterized in that: A plurality of first top screws (11) are also provided on the outer periphery of the mounting base plate (1).
4. A special chuck for machining hub bearings with high-end CNC equipment as claimed in claim 1, characterized in that: The chuck body (2) is provided with a clamping groove (210) for mounting a clamping claw (21), and the clamping claw (21) is mounted in the clamping groove (210) of the chuck body (2) by means of bolts.