Dual electric hollow chuck driving device
Patent Information
- Application Number
- CN202521570055.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-25
- Publication Date
- 2026-09-08
- Estimated Expiration
- 2035-07-25
AI Technical Summary
该装置传动系统经过精心的优化设计，具有传动精度高、功率扭矩特性优良、传动平稳、自动化程度高，工作效率高，结构紧凑的特点；解决由多人次配合装夹工件的操作规程，避免了操作中存在的生产安全事故隐患，提高了零部件装卡的周期；优化了制造工艺；满足了用户对于细长薄壁件零件快速装卡的需求
[0016]Automatic clamping and loosening are achieved by transmitting force to the chuck gear ring via gears. A single servo motor completes the automatic clamping and loosening function of the dual electric hollow chucks at the front and rear of the CNC horizontal lathe headstock. Furthermore, the clamping torque of the jaws can be set, thus precisely meeting the needs of the electric chuck for clamping or loosening workpieces and achieving automatic workpiece alignment. The transmission system of this device has undergone meticulous optimization design, featuring high transmission accuracy, excellent power-torque characteristics, smooth transmission, high degree of automation, high working efficiency, and compact structure. It solves the problem of multiple-person operation procedures for clamping workpieces, avoids potential production safety hazards during operation, improves the cycle time for component clamping, optimizes the manufacturing process, and meets users' needs for rapid clamping of slender, thin-walled parts. Therefore, it achieves convenient operation, reliability, and practicality.
Smart Images
Figure CN224725033U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of machining technology, specifically to a dual electric hollow chuck drive device. Background Technology
[0002] When machining slender, thin-walled parts on a CNC heavy-duty horizontal lathe, in order to meet the machining process requirements and ensure workpiece machining accuracy, the CNC heavy-duty horizontal lathe's spindle box must be equipped with dual electric hollow chucks at the front and rear. The workpiece is automatically clamped after passing through the spindle and hollow chucks, and then turning is performed. A high degree of automation is required for the clamping and loosening of the front and rear chucks of the spindle box, including automatic centering.
[0003] However, current technology cannot achieve this: when clamping and releasing a hollow electric chuck on a CNC horizontal lathe, two drive motors are generally required to complete the necessary movements. Manual operation of each motor cannot achieve automatic clamping of parts, resulting in high labor intensity, difficult operation, and the inability to read and set the clamping force of the grippers. Furthermore, the complex structure limits its application and installation range. Utility Model Content
[0004] Therefore, the purpose of this utility model is to provide a dual-electric hollow chuck drive device. Through gears, force is transmitted to the chuck gear ring, achieving automatic clamping and loosening. A single servo motor completes the automatic clamping and loosening function of the dual-electric hollow chucks at the front and rear of the CNC horizontal lathe headstock. Furthermore, the clamping torque of the jaws can be set, thus precisely meeting the clamping or loosening needs of the electric chuck and achieving automatic workpiece alignment. The transmission system of this device has undergone careful optimization design, featuring high transmission accuracy, excellent power-torque characteristics, smooth transmission, high automation, high working efficiency, and a compact structure. It solves the problem of multiple-person operation procedures for clamping workpieces, avoiding potential production safety hazards during operation, improving the cycle time for component clamping, optimizing the manufacturing process, and meeting users' needs for rapid clamping of slender, thin-walled parts. Thus, it achieves convenient operation, reliability, and practicality.
[0005] To solve the above-mentioned technical problems, according to one aspect of the present invention, the present invention provides the following technical solution: a dual electric hollow chuck drive device, comprising a spindle, a servo motor, and a hydraulic cylinder, wherein a front chuck and a rear chuck are mounted on the spindle, and a spindle bearing is provided at the position of the spindle, the spindle is connected to the spindle housing through the spindle bearing, a key A is connected to the output end of the servo motor, and a worm gear is connected to the servo motor through key A, and a worm wheel is connected to the position of the worm gear;
[0006] The worm gear is connected to a key B, and the key B is connected to a drive shaft. The two ends of the drive shaft are respectively provided with a drive gear A and a drive gear B. The two ends of the drive shaft are respectively fitted with a sleeve one and a sleeve two. The hydraulic cylinder is provided with a shift fork, and the rear chuck is connected with a chuck claw.
[0007] In a preferred embodiment of the dual-electric hollow chuck drive device described in this utility model, the drive gear A and drive gear B rotate in opposite directions. Furthermore, drive gear A and drive gear B mesh with the front and rear chuck gear rings.
[0008] In a preferred embodiment of the dual electric hollow chuck drive device described in this utility model, the shift fork pushes the transmission shaft to move back and forth along sleeve one and sleeve two.
[0009] In a preferred embodiment of the dual electric hollow chuck drive device of this utility model, a first bearing and a second bearing are respectively provided at both ends of the worm gear, and the worm gear rotates along the first bearing and the second bearing.
[0010] In a preferred embodiment of the dual electric hollow chuck drive device of this utility model, the drive gear A is connected to a key C, and the drive gear A is connected to the transmission shaft through the key C.
[0011] In a preferred embodiment of the dual electric hollow chuck drive device of this utility model, the drive gear B is connected to a key D, and the drive gear B is connected to the transmission shaft through the key D.
[0012] In a preferred embodiment of the dual electric hollow chuck drive device described in this utility model, the worm gear is provided with a flange, a third bearing, a screw, and a fourth bearing.
[0013] The two ends of the worm gear rotate along the third and fourth bearings.
[0014] In a preferred embodiment of the dual electric hollow chuck drive device described in this utility model, a workpiece is inserted into the middle position of the chuck jaws.
[0015] Compared with the prior art, the advantages of this utility model are:
[0016] Automatic clamping and loosening are achieved by transmitting force to the chuck gear ring via gears. A single servo motor completes the automatic clamping and loosening function of the dual electric hollow chucks at the front and rear of the CNC horizontal lathe headstock. Furthermore, the clamping torque of the jaws can be set, thus precisely meeting the needs of the electric chuck for clamping or loosening workpieces and achieving automatic workpiece alignment. The transmission system of this device has undergone meticulous optimization design, featuring high transmission accuracy, excellent power-torque characteristics, smooth transmission, high degree of automation, high working efficiency, and compact structure. It solves the problem of multiple-person operation procedures for clamping workpieces, avoids potential production safety hazards during operation, improves the cycle time for component clamping, optimizes the manufacturing process, and meets users' needs for rapid clamping of slender, thin-walled parts. Therefore, it achieves convenient operation, reliability, and practicality. Attached Figure Description
[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the present utility model will be described in detail below with reference to the accompanying drawings and detailed embodiments. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:
[0018] Figure 1 This is a structural diagram of the present invention;
[0019] Figure 2 This is a cross-sectional view AA of the present invention.
[0020] In the diagram: 1. Servo motor; 2. Key A; 3. First bearing; 4. Worm gear; 5. Key B; 6. Drive shaft; 7. Worm wheel; 8. Second bearing; 9. Spindle; 10. Spindle housing; 11. Drive gear A; 12. Key C; 13. Sleeve 1; 14. Shift fork; 15. Flange; 16. Third bearing; 17. Screw; 18. Fourth bearing; 19. Sleeve 2; 20. Drive gear B; 21. Key D; 22. Front chuck; 23. Spindle bearing; 24. Hydraulic cylinder; 25. Rear chuck; 26. Pallet; 27. Workpiece. Detailed Implementation
[0021] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.
[0022] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.
[0023] Secondly, this utility model is described in detail with reference to the schematic diagrams. When describing the embodiments of this utility model, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not adhering to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of this utility model. In addition, actual manufacturing should include the three-dimensional spatial dimensions of length, width, and depth.
[0024] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.
[0025] This utility model provides a dual-electric hollow chuck drive device. Force is transmitted to the chuck gear ring via gears to achieve automatic clamping and loosening. A single servo motor completes the automatic clamping and loosening function of the dual-electric hollow chucks at the front and rear of the CNC horizontal lathe headstock. Furthermore, the clamping torque of the jaws can be set, thus precisely meeting the clamping or loosening needs of the electric chuck and achieving automatic workpiece alignment. The transmission system of this device has been carefully optimized, featuring high transmission accuracy, excellent power-torque characteristics, smooth transmission, high automation, high work efficiency, and a compact structure. It solves the problem of multiple-person operation procedures for clamping workpieces, avoiding potential production safety hazards during operation, improving the component clamping cycle, optimizing the manufacturing process, and meeting users' needs for rapid clamping of slender, thin-walled parts. Therefore, it achieves convenient operation, reliability, and practicality.
[0026] Figures 1-2 The diagram shown is an overall structural schematic of an embodiment of the dual-electric hollow chuck drive device of this utility model. Please refer to [link / reference]. Figures 1-2 The main structure of this embodiment includes a spindle 9, a servo motor 1, and a hydraulic cylinder 24. A front chuck 22 and a rear chuck 25 are mounted on the spindle 9, and a spindle bearing 23 is provided at the position of the spindle 9. The spindle 9 is connected to the spindle housing 10 through the spindle bearing 23. A key A2 is connected to the output end of the servo motor 1, and a worm gear 4 is connected to the servo motor 1 through the key A2. A worm wheel 7 is connected to the position of the worm gear 4.
[0027] The worm gear 7 is connected to key B5, and key B5 is connected to drive shaft 6. Drive gear A11 and drive gear B20 are respectively provided at both ends of drive shaft 6. Sleeve 13 and sleeve 2 19 are respectively fitted at both ends of drive shaft 6. Shift fork 14 is provided on hydraulic cylinder 24. Claw 26 is connected to rear chuck 25.
[0028] The worm 4 is provided with a first bearing 3 and a second bearing 8 at its two ends, and the worm 4 rotates along the first bearing 3 and the second bearing 8.
[0029] A key C12 is connected to the drive gear A11, and the drive gear A11 is connected to the drive shaft 6 via the key C12; a key D21 is connected to the drive gear B20, and the drive gear B20 is connected to the drive shaft 6 via the key D21; a flange 15, a third bearing 16, a screw 17, and a fourth bearing 18 are provided at the position of the worm gear 7.
[0030] The worm gear 7 rotates along the third bearing 16 and the fourth bearing 18 at both ends; the workpiece 27 is inserted into the middle position of the chuck 26.
[0031] In practical use, the front chuck 22 and rear chuck 25 of the CNC horizontal lathe are mounted on the spindle 9. The spindle 9 is mounted on the spindle housing 10 via the spindle bearing 23. The CNC horizontal lathe operating system controls the servo motor 1. The servo motor 1 drives the worm gear 4 to rotate via key A 2. The rotation of the worm gear 4 causes the worm wheel 7 to drive the transmission shaft 6 to rotate via key B5. The reduction device drives the drive gears A 11 and B 20 on the transmission shaft 6 to rotate in the forward and reverse directions. The drive gears A 11 and B 20 mesh with the gear rings of the front chuck 22 and rear chuck 25, which can drive the gear ring of the electric chuck to rotate, realizing automatic clamping and loosening. Furthermore, through the shift fork 14 on the hydraulic cylinder 24, the transmission shaft 6 is pushed to move back and forth in sleeve 13 and sleeve 29, realizing the switching of the front chuck 22 and rear chuck 25. The automatic clamping and loosening of the front and rear chucks 25 can be controlled separately. The specific operation is as follows:
[0032] 1. When in position A in the figure, the drive gear A11 is moved by the shift fork 14 on the hydraulic cylinder 24 to mesh with the gear ring of the rear chuck 25, and the chuck 25 automatically clamps or releases the workpiece 27 by the chuck 26.
[0033] 2. When in position C in the figure, the transmission shaft 6 and the drive gear B20 are pushed forward by the shift fork 14 on the hydraulic cylinder 24. When the drive gear B20 meshes with the gear ring of the front chuck 22, the front chuck 22 automatically clamps or releases the workpiece 27.
[0034] 3. When the machine is in position B in the diagram, the transmission shaft 6 is pushed to the middle position by the shift fork 14 on the hydraulic cylinder 24, and the chuck rotates normally, allowing the CNC lathe to work.
[0035] Although the present invention has been described above with reference to embodiments, various modifications can be made and components can be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the features in the embodiments disclosed in this invention can be combined with each other in any way. The lack of an exhaustive description of these combinations in this specification is merely for the sake of brevity and resource conservation. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.
Claims
1. A dual-electric hollow chuck drive device, comprising a main shaft (9), a servo motor (1), and a hydraulic cylinder (24), characterized in that, The spindle (9) is equipped with a front chuck (22) and a rear chuck (25), and a spindle bearing (23) is provided at the position of the spindle (9). The spindle (9) is connected to the spindle housing (10) through the spindle bearing (23). The output end of the servo motor (1) is connected to a key A (2), and the servo motor (1) is connected to a worm gear (4) through the key A (2). A worm wheel (7) is connected at the position of the worm gear (4). The worm gear (7) is connected to a key B (5), and the key B (5) is connected to a drive shaft (6). The two ends of the drive shaft (6) are respectively provided with a drive gear A (11) and a drive gear B (20). The two ends of the drive shaft (6) are respectively fitted with a first sleeve (13) and a second sleeve (19). The hydraulic cylinder (24) is provided with a shift fork (14), and the rear chuck (25) is connected with a chuck claw (26).
2. The dual-electric hollow chuck drive device according to claim 1, characterized in that, The drive gear A (11) and drive gear B (20) rotate in the forward and reverse directions, and the drive gear A (11) and drive gear B (20) mesh with the gear rings of the front chuck (22) and the rear chuck (25).
3. The dual-electric hollow chuck drive device according to claim 1, characterized in that, The shift fork (14) pushes the drive shaft (6) to move back and forth along sleeve one (13) and sleeve two (19).
4. The dual-electric hollow chuck drive device according to claim 1, characterized in that, The worm (4) is provided with a first bearing (3) and a second bearing (8) at both ends, and the worm (4) rotates along the first bearing (3) and the second bearing (8).
5. The dual-electric hollow chuck drive device according to claim 1, characterized in that, The drive gear A (11) is connected to a key C (12), and the drive gear A (11) is connected to the drive shaft (6) via the key C (12).
6. The dual-electric hollow chuck drive device according to claim 1, characterized in that: The drive gear B (20) is connected to a key D (21), and the drive gear B (20) is connected to the drive shaft (6) via the key D (21).
7. The dual-electric hollow chuck drive device according to claim 1, characterized in that: The worm gear (7) is provided with a flange (15), a third bearing (16), a screw (17) and a fourth bearing (18). The two ends of the worm gear (7) rotate along the third bearing (16) and the fourth bearing (18).
8. The dual-electric hollow chuck drive device according to claim 1, characterized in that: The workpiece (27) is inserted into the middle position of the jaw (26).