Special machine tool for finish machining of large planet carrier
By integrating precision turning and boring processes into a specialized machine tool, and employing vertical milling and automatic measurement systems, the precision machining problem of large planetary carriers was solved, achieving efficient and high-precision machining results and reducing costs.
Patent Information
- Application Number
- CN202423156314.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-20
- Publication Date
- 2025-12-26
- Estimated Expiration
- 2034-12-20
AI Technical Summary
Existing processing techniques and equipment are insufficient to meet the precision machining requirements of large planetary carriers, especially the geometric and positional accuracy of boring holes is difficult to control, and the processing efficiency is low.
A special machine tool for precision machining of large planetary carriers was designed, which integrates precision turning and boring processes into one machine tool. Vertical boring and milling is used instead of horizontal boring and milling, and the boring and milling cutter post and turning tool post are driven by Z-axis and X-axis transmission devices. The workpiece rotation and indexing are realized by combining indexing transmission device, and an automatic measurement system is equipped to improve accuracy and efficiency.
It achieves high-precision machining of workpieces, improves positional accuracy and machining efficiency, reduces noise and manufacturing costs, and can completely replace imported equipment.
Smart Images
Figure CN223718833U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a special machine tool for large planetary carrier finish machining belongs to the technical field of high efficiency high-precision machine tool. BACKGROUND
[0002] With the development of wind power equipment to large-scale, the size of the core component planetary carrier of wind power is continuously increased, which makes the finish machining of planetary carrier more and more difficult, and the machining precision and efficiency are limited. The existing machining process scheme and machining equipment cannot meet the finish machining requirements of large planetary carrier.
[0003] The current finish machining process scheme of large planetary carrier is: step one, finish turning each surface by using vertical lathe; step two, finish boring each index hole by using floor boring or horizontal machining center. Since turning and boring are carried out on different machine tools, two positioning and clamping are required, the position precision of each surface of turning and boring hole is difficult to control, and the auxiliary time is long. In addition, due to the influence of the self-weight sinking of boring bar, the geometric precision of boring hole is difficult to control. SUMMARY
[0004] The technical problem to be solved by the utility model is to provide a special machine tool for large planetary carrier finish machining, which integrates finish turning process and boring process in one machine tool, and changes the boring and milling of horizontal boring and milling to vertical boring and milling, thereby eliminating the problem of geometric precision of boring hole exceeding tolerance caused by the self-weight sinking of boring bar.
[0005] To solve the above problems, the specific technical scheme of the utility model is as follows: a special machine tool for large planetary carrier finish machining is provided, a vertical column is arranged on the workbench, a cross beam is driven to move up and down on the vertical column through a Z-axis transmission device; a boring and milling tool holder and a turning tool holder are respectively driven on the cross beam through two X-axis transmission devices; a boring tool or a milling tool is connected below the boring and milling tool holder, and a rotary tool tower is connected below the turning tool holder; a dividing transmission device is arranged at the bottom of the workbench, and the dividing transmission device drives the workbench and the workpiece clamp to rotate and divide.
[0006] A tool magazine is fixedly connected to the left end of the cross beam, and a workpiece measuring head is arranged in one tool magazine position.
[0007] The Z-axis transmission device is composed of two sets of servo motors and ball screws, and is arranged side by side on the left and right sides of the vertical column, and the two ball screws are connected with the cross beam.
[0008] The ball screws of the X-axis transmission device are two in number and are coaxially arranged horizontally on the cross beam, and a servo motor is connected to the outer side end of each ball screw; the ball screw slide block of the X-axis transmission device on the left side is connected with the boring and milling tool holder, and the ball screw slide block of the X-axis transmission device on the right side is connected with the turning tool holder.
[0009] The special machine tool for large planetary carrier finish machining of the application has the following advantages:
[0010] 1. The boring and milling tool holder and turning tool holder are without a slide, and the vertical movement of the boring and milling tool holder and turning tool holder is realized by the vertical movement of the beam, thereby reducing the length of the tool holder, increasing the turning strength of the tool holder, and greatly improving the machining precision of the workpiece.
[0011] 2. The application realizes combined boring and turning machining, and can greatly improve the position precision of the workpiece, reduce the noise of the speed increaser, and improve the service life.
[0012] 3. The application realizes one-time clamping of the workpiece, automatic completion of turning, boring, drilling and milling machining, automatic tool changing, and automatic measurement, and can improve the efficiency by more than 3 times.
[0013] 4. The application is provided with a workpiece measuring head, can realize online measurement, the quality is controllable, and improves the detection efficiency and reliability.
[0014] 5. The application can completely replace the imported turning and milling combined vertical lathe, saves foreign exchange, and reduces the manufacturing cost. BRIEF DESCRIPTION OF DRAWINGS
[0015] Figure 1 It is a front view of a large planetary gear carrier finishing special machine tool.
[0016] Figure 2 It is a side view of a large planetary gear carrier finishing special machine tool. DETAILED DESCRIPTION
[0017] As shown in Figure 1 and Figure 2 , a large planetary gear carrier finishing special machine tool is provided with a column 2 on a workbench 1, and a beam 3 is driven to move up and down on the column 2 through a Z-axis transmission device; a boring and milling tool holder 4 and a turning tool holder 5 are respectively driven on the beam 3 through two X-axis transmission devices; a boring cutter or a milling cutter is connected below the boring and milling tool holder 4, a rotary tool tower 6 is connected below the turning tool holder 5, various turning tools are connected on the rotary tool tower 6, and the machining processes such as inner and outer circle turning and end face turning of the workpiece are realized; a dividing transmission device 11 is arranged at the bottom of the workbench 1, and the dividing transmission device 11 drives the workbench 1 and a workpiece clamp 7 to rotate and divide; the dividing transmission device 11 and the workpiece clamp 7 are existing structures, and can realize the dividing rotation of the workpiece in the clamped state.
[0018] A tool magazine 9 is fixedly connected to the left end of the beam 3, and the tool connected to the boring and milling tool holder 4 can complete tool exchange with the tool magazine 9, realizing automatic tool changing; a workpiece measuring head 8 is arranged in one tool magazine position, the boring and milling tool holder 4 grabs the measuring head from the tool magazine after the workpiece is machined, and measures the precision of the workpiece.
[0019] The Z-axis transmission device is composed of two sets of servo motors 12 and ball screws, and is arranged side by side on the left and right sides of the column 2, and the two ball screws are connected with the beam 3 together.
[0020] The X-axis transmission device has two ball screws arranged coaxially and horizontally on the cross beam 3, and the outer end of each ball screw is connected with a servo motor 12. The ball screw slide block of the left X-axis transmission device is connected with the boring and milling tool holder 4, and the ball screw slide block of the right X-axis transmission device is connected with the turning tool holder 5.
Claims
1. A machine tool for finishing a large planetary carrier, characterized by: The workbench (1) is provided with a column (2), and a cross beam (3) is driven by a Z-axis transmission device to move up and down on the column (2); a boring and milling tool holder (4) and a turning tool holder (5) are respectively driven by two X-axis transmission devices on the cross beam (3); a boring cutter or a milling cutter is connected below the boring and milling tool holder (4), and a rotary tool tower (6) is connected below the turning tool holder (5); a dividing transmission device (11) is arranged at the bottom of the workbench (1), and the dividing transmission device (11) drives the workbench (1) and a workpiece clamp (7) to rotate and divide.
2. The machine tool for finishing large planet carrier according to claim 1, characterized in that: A tool magazine (9) is fixedly connected to the left end of the cross beam (3), and a workpiece measuring head (8) is arranged in one tool magazine position.
3. The machine tool for finishing large planet carrier according to claim 1, characterized in that: The Z-axis transmission device is composed of two sets of servo motors (12) and ball screws, and is arranged side by side on the left and right sides of the column (2), and the two ball screws are connected with the cross beam (3) together.
4. The machine tool for finishing large planet carrier according to claim 1, characterized in that: The X-axis transmission device has two ball screws which are coaxially arranged horizontally on the cross beam (3), and the outer side end of each ball screw is connected with a servo motor (12); the ball screw slider of the left X-axis transmission device is connected with the boring and milling tool holder (4), and the ball screw slider of the right X-axis transmission device is connected with the turning tool holder (5).