Large-torque high-rotating-speed center-moving type machine tool spindle
By installing gears outside the spindle of the heart-moving machine tool and connecting the main transmission chain, the problem of large torque and high speed cannot be achieved simultaneously in the prior art, and a more efficient and higher quality machining effect is achieved.
Patent Information
- Application Number
- CN202311302226.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2023-10-08
- Publication Date
- 2025-04-11
AI Technical Summary
The spindles of existing heart-moving machine tools cannot achieve high torque and high speed at the same time, resulting in low machining efficiency, high cost and unstable quality.
By installing the first gear and the second gear outside the machine tool spindle body and connecting it with the high-torque main transmission chain and the high-speed main transmission chain in the spindle box, both high-torque and high-speed main transmission chain are achieved.
It achieves both large torque and high speed of the spindle of the boring and milling machine, reduces equipment costs, improves processing efficiency and quality, and reduces the workpiece rotation time and clamping times.
Smart Images
Figure CN119794398A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of Swiss-type machine tool spindles, in particular to a Swiss-type machine tool spindle with large torque and high speed. Background Art
[0002] Swiss-type CNC lathe - the full name is Swiss-type CNC lathe, which can also be called spindle box mobile CNC automatic lathe, economical turning and milling machine or longitudinal cutting lathe. It is a precision processing equipment that can complete turning, milling, drilling, boring, tapping, engraving and other composite processing at the same time. It is mainly used for batch processing of precision hardware and shaft-type special-shaped non-standard parts. When using Swiss-type machine tools, the main shaft needs to be used to drive the cleaning rod to rotate. At the same time, when the cleaning rod is rotated, the machine tool spindle driving state needs to be used. In order to improve the use efficiency of the machine tool spindle, the rotation efficiency of the machine tool spindle can be improved.
[0003] Swiss-type machine tool spindles include high-speed, low-torque boring and milling machines and low-speed, high-torque boring and milling machines. The low-speed, high-torque boring and milling machines can process large holes, but cannot complete high-speed milling and drilling of small holes; the high-speed, low-torque boring and milling machines can complete relatively high-speed milling and drilling of small holes, but cannot process large holes; for many years, boring and milling machines have generally been used in matching processing, one low-speed, high-torque boring and milling machine to process large holes or do rough processing, and the other high-speed, low-torque boring and milling machine to do fine processing; in the past, such matching processing required large investment in equipment, site, manpower, etc., high cost, low processing efficiency, and unstable processing quality, so that the spindle used for the boring and milling machine can only achieve low-speed and high torque of the machine tool, or high-speed and low torque, and the two cannot be achieved at the same time. For this reason, we have proposed a Swiss-type machine tool spindle with high torque and high speed. Summary of the invention
[0004] In view of the shortcomings of the existing large-torque and high-speed Swiss-type machine tool spindles, the present invention provides a large-torque and high-speed Swiss-type machine tool spindle, which has the advantages that the first gear and the second gear are both installed on the outside of the machine tool spindle body, and after the machine tool spindle body is installed inside the spindle box, the first gear and the second gear can be connected to the large-torque main transmission chain and the high-speed main transmission chain installed inside the spindle box, thereby solving the problems raised in the above-mentioned background technology.
[0005] The present invention provides the following technical solution: a high-torque and high-speed Swiss-type machine tool spindle, comprising a machine tool spindle body, a spindle box and a cleaning rod, the interior of the machine tool spindle body contains a boring spindle, the upper end of the boring spindle is externally sleeved with a milling spindle, a guide sleeve is installed between the boring spindle and the milling spindle, the outer sleeve of the milling spindle is sleeved with a first end cover, the outer sleeve between the first end cover and the milling spindle is sleeved with a protective cover, a boring spindle end face key is arranged between the cleaning rod and the boring spindle, a second screw is installed inside the boring spindle end face key, the milling spindle is installed inside the milling spindle, a first screw is arranged inside the milling spindle end face key, a spindle mounting screw is installed outside the first end cover, a first spacer is arranged between the milling spindle and the first end cover through a sealing ring, one side of the first spacer is simultaneously located outside the milling spindle, and a first spindle bearing and a second spindle bearing are installed in sequence, the outer sleeve of the milling spindle is sleeved with a first inner spacer, and the first The outer part of an inner spacer is sleeved with a first outer spacer, the rear end of the first inner spacer is located on the outside of the milling shaft and is sleeved with a second bearing and a first bearing in sequence, the outer part of the first outer spacer is sleeved with a cooling sleeve, the side of the first bearing is installed with a second spacer, the outer part of the second spacer is clamped with a second end cover, the outer part of the middle part of the first outer spacer is sleeved with a first locking nut, the side of the first locking nut is installed with a third spacer, the end of the first outer spacer is located on the outside of the milling shaft and is sleeved with a key block, the outer part of the key block is sleeved with a first gear, the side of the first gear is sequentially installed with a fourth spacer and a second gear, the side of the second gear is installed with a fourth spindle bearing and a third spindle bearing, the side between the third spindle bearing and the fourth spindle bearing is sleeved with a second inner spacer and a second outer spacer, and the side of the third spindle bearing and located on the outside of the boring shaft end is provided with a second locking nut.
[0006] Preferably, the first gear and the second gear are arranged between the milling shaft and the fourth main shaft bearing, the outer portion of the first gear is sleeved on a large torque main transmission chain, and the outer portion of the second gear is sleeved on a high speed main transmission chain.
[0007] Preferably, the spindle box is sleeved on the outside of the machine tool spindle body, the cleaning rod is arranged inside the machine tool spindle body, and the boring spindle arranged inside the machine tool spindle body is kept in a fit state with the outside of the cleaning rod.
[0008] Preferably, a boring spindle is nested in the milling spindle, a key block is designed inside the first gear installed at the rear of the milling spindle, three guide sleeves are installed, and the guide sleeves are arranged inside the milling spindle.
[0009] Preferably, the first spindle bearing and the second spindle bearing and the first bearing and the second bearing are paired in pairs and installed in DBB form, and the first inner spacer and the first outer spacer are arranged inside the first spindle bearing and the second bearing.
[0010] Preferably, the milling shaft is sequentially designed with a sealing ring, a first spacer, a first spindle bearing, a second spindle bearing, a first bearing, a second bearing, and a second spacer from front to back, and is locked by a first locking nut. The first end cover and the second end cover are arranged at both ends of the cooling jacket.
[0011] Preferably, the third spacer is arranged on one side of the first gear, and the rear end of the first gear is sequentially installed with a fourth spindle bearing, a second outer spacer, a second inner spacer, a third spindle bearing and a second locking nut, and the second locking nut is arranged on the outside of the milling shaft.
[0012] Preferably, a fourth spacer is installed between the first gear and the first inner spacer, and a lubricating oil inlet is provided between the fourth spacer and the boring shaft.
[0013] Preferably, the first end cover and the cooling jacket are provided with air inlet holes, the cooling jacket is provided with a spiral circulation groove, and a condensation pipe is provided outside the spiral circulation groove.
[0014] Compared with the existing high-torque and high-speed Swiss-type machine tool spindle, the present invention has the following beneficial effects:
[0015] 1. After the large torque and high speed Swiss-type machine tool spindle is installed inside the spindle box through the machine tool spindle body, the outer part of the first gear is sleeved on the large torque main transmission chain, and the outer part of the second gear is sleeved on the high-speed main transmission chain, that is, the large torque and high speed of the boring and milling machine spindle are achieved perfectly, which has well solved the shortcomings of the original boring and milling machine spindle. Therefore, by selecting the boring and milling machine of the present invention, one machine can replace two machines, and the user can save the cost of machine tool equipment.
[0016] 2. This high-torque, high-speed Swiss-type machine tool spindle can achieve high torque and high speed by selecting a boring and milling machine. The same boring and milling machine can be used for low-speed strong cutting and high-speed light cutting. Users can also reduce workpiece transfer time, reduce the number of workpiece clamping times, reduce use costs, improve processing efficiency, and improve processing quality.
[0017] 3. The high-torque and high-speed Swiss-type machine tool spindle is connected to a boring spindle through the outer sleeve of a cleaning rod, and the boring spindle and the milling spindle are mutually sleeved and restricted, and the first spacer, the second spindle bearing, the first spindle bearing, the first inner spacer, the first outer spacer, the second bearing, and the first bearing are installed on the outside of the milling spindle in sequence, and the cooling jacket is arranged on the outside of the first outer spacer, and the second spacer and the second end cover drive the position of the cooling jacket to limit, and the first locking nut is installed on the side of the second end cover, and the third spacer, the first gear, the fourth spacer, the second gear, the fourth spindle bearing and the third spindle bearing are installed in sequence, and the second locking nut is installed on the side of the third spindle bearing, which increases the stability of the equipment during splicing and installation. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 It is a schematic diagram of the main structure of the present invention;
[0019] Figure 2 It is a schematic diagram of the structure of the main shaft body of the machine tool of the present invention;
[0020] Figure 3 It is a schematic diagram of the side view structure of the main body of the present invention;
[0021] Figure 4 It is a partial cross-sectional structural schematic diagram of the main body of the present invention;
[0022] Figure 5 This is a schematic diagram of the main structure of the machine tool spindle of the present invention;
[0023] Figure 6 It is a schematic diagram of the side view structure of the machine tool spindle of the present invention;
[0024] Figure 7 This is an enlarged structural schematic diagram of location A of the present invention;
[0025] Figure 8 This is a schematic diagram of the enlarged structure of B of the present invention;
[0026] Fig. 9 It is a schematic diagram of the enlarged structure of point C of the present invention.
[0027] In the figure: 1, machine tool spindle body; 2, spindle box; 3, cleaning rod; 4, spindle mounting screw; 5, milling spindle end face key; 6, first screw; 7, boring spindle end face key; 8, second screw; 9, milling spindle; 10, boring spindle; 11, protective cover; 12, first end cover; 13, sealing ring; 14, first spacer; 15, guide sleeve; 16, first spindle bearing; 17, second spindle bearing; 18, cooling sleeve; 19, first inner spacer; 20, first outer spacer; 21, second spacer; 22, second end cover; 23, first bearing; 24, second bearing; 25, key block; 26, first gear; 27, third spacer; 28, first locking nut; 29, second gear; 30, fourth spacer; 31, second locking nut; 32, third spindle bearing; 33, second inner spacer; 34, second outer spacer; 35, fourth spindle bearing. DETAILED DESCRIPTION
[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0029] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 and Fig. 9A high-torque and high-speed Swiss-type machine tool spindle comprises a machine tool spindle body 1, a spindle box 2 and a cleaning rod 3. The interior of the machine tool spindle body 1 contains a boring spindle 10, and the boring spindle 10 is sleeved on the outside of the cleaning rod 3. The boring spindle 10 can drive the cleaning rod 3 to rotate synchronously. The outer sleeve of the upper end of the boring spindle 10 is sleeved with a milling spindle 9, and a guide sleeve 15 is installed between the boring spindle 10 and the milling spindle 9. The guide sleeve 15 drives the device to provide activity space. The outer sleeve of the milling spindle 9 is sleeved with a first end cover 12, and the first end cover 12 limits the initial position of the cooling sleeve 18. The outer sleeve between the first end cover 12 and the milling spindle 9 is sleeved with a protective cover 11. A boring spindle end face key 7 is arranged between the cleaning rod 3 and the boring spindle 10, and the inner part of the boring spindle end face key 7 A second screw 8 is installed, and the second screw 8 drives the cleaning rod 3 and the boring shaft 10 to limit the position. A milling shaft end face key 5 is installed inside the milling shaft 9, and a first screw 6 is arranged inside the milling shaft end face key 5. A spindle mounting screw 4 is installed outside the first end cover 12. A first spacer 14 is arranged between the milling shaft 9 and the first end cover 12 through a sealing ring 13. The sealing ring 13 and the first spacer 14 are installed between the milling shaft 9 and the first end cover 12, which can increase the sealing performance when the position between the machine tool spindle body 1 and the spindle box 2 is spliced. One side of the first spacer 14 is also located outside the milling shaft 9, and the first spindle bearing 16 and the second spindle bearing 17 are installed in sequence. The outside of the milling shaft 9 is sleeved with the first inner sleeve. The first inner spacer 19 is sleeved with the first outer spacer 20 on the outside, the rear end of the first inner spacer 19 is sleeved with the second bearing 24 and the first bearing 23 in sequence on the outside of the milling shaft 9, the outside of the first outer spacer 20 is sleeved with the cooling sleeve 18, the side of the first bearing 23 is installed with the second spacer 21, the outside of the second spacer 21 is clamped with the second end cover 22, the middle of the first outer spacer 20 is sleeved with the first locking nut 28 on the outside, the side of the first locking nut 28 is installed with the third spacer 27, the end of the first outer spacer 20 is sleeved with the key block 25 on the outside of the milling shaft 9, the outside of the key block 25 is sleeved with the first gear 26, the outside of the first gear 26 is sleeved on the main transmission of large torque On the moving chain, the first gear 26 drives the cleaning rod 3 for high torque adjustment. The fourth spacer 30 and the second gear 29 are installed on the side of the first gear 26 in sequence. The outer part of the second gear 29 is sleeved on the high-speed main transmission chain. The second gear 29 drives the cleaning rod 3 to rotate at a high speed. The fourth main shaft bearing 35 and the third main shaft bearing 32 are installed on one side of the side of the second gear 29. The second inner spacer 33 and the second outer spacer 34 are sleeved on one side between the connection between the third main shaft bearing 32 and the fourth main shaft bearing 35. The second locking nut 31 is arranged on the side of the third main shaft bearing 32 and on the outside of the end of the boring shaft 10. The second locking nut 31 performs extrusion and limiting treatment on the position of the third main shaft bearing 32.
[0030] refer to Figure 3The first gear 26 and the second gear 29 are arranged between the milling shaft 9 and the fourth spindle bearing 35, the outer part of the first gear 26 is sleeved on the high-torque main transmission chain, and the outer part of the second gear 29 is sleeved on the high-speed main transmission chain. The first gear 26 and the second gear 29 are arranged between the milling shaft 9 and the fourth spindle bearing 35, and the milling shaft 9 and the fourth spindle bearing 35 drive the positions of the first gear 26 and the second gear 29 to be limited. At the same time, the outer part of the first gear 26 is sleeved on the high-torque main transmission chain, and the outer part of the second gear 29 is sleeved on the high-speed main transmission chain, that is, the high-torque main transmission chain and the high-speed main transmission chain installed inside the spindle box 2 can allow the same machine tool to achieve high torque and high speed, which well solves the shortcomings of the original boring and milling machine spindle, and more perfectly realizes the high torque and high speed of the boring and milling machine spindle, and both can be achieved.
[0031] refer to Figure 1 The spindle box 2 is sleeved on the outside of the machine tool spindle body 1, the cleaning rod 3 is arranged inside the machine tool spindle body 1, and the boring spindle 10 arranged inside the machine tool spindle body 1 is kept in contact with the outside of the cleaning rod 3. The spindle box 2 is sleeved on the inside of the machine tool spindle body 1, and the driving device installed inside the spindle box 2 can drive the spindle box 2 to rotate, and the spindle box 2 can synchronously drive the cleaning rod 3 to rotate as a whole.
[0032] refer to Figure 7 The boring spindle 10 is nested in the milling spindle 9, and a key block 25 is designed inside the first gear 26 installed at the rear of the milling spindle 9. Three guide sleeves 15 are installed, and the guide sleeves 15 are arranged inside the milling spindle 9. The boring spindle 10 is embedded in the milling spindle 9, that is, the milling spindle 9 and the boring spindle 10 can rotate synchronously. At the same time, a key block 25 is arranged inside the first gear 26 installed at the rear of the milling spindle 9, and the boring spindle 10 rotates synchronously with the milling spindle 9. At the same time, the position of the guide sleeve 15 inside the milling spindle 9 can be adjusted, that is, the overall length of the machine tool spindle body 1 can be accurately and flexibly changed, further increasing the process range of the spindle.
[0033] refer to Figure 7 and Figure 8The first spindle bearing 16 and the second spindle bearing 17 and the first bearing 23 and the second bearing 24 are paired in pairs and installed in DBB at the same time. The first inner spacer 19 and the first outer spacer 20 are arranged inside the first spindle bearing 16 and the second bearing 24. The first spindle bearing 16 and the second spindle bearing 17 and the first bearing 23 and the second bearing 24 are installed in DBB, that is, the cooling sleeve 18 is installed and fixed inside the spindle box 2. At the same time, the first end cover 12 can increase the stability when rotating inside the cooling sleeve 18. At the same time, the first inner spacer 19 and the first outer spacer 20 are installed between the first spindle bearing 16 and the second bearing 24. When the first end cover 12 rotates, the first inner spacer 19 and the first outer spacer 20 limit the distance between the first spindle bearing 16 and the second bearing 24, thereby increasing the first spindle bearing 16 to avoid position displacement when in use.
[0034] refer to Figure 7 The milling shaft 9 is sequentially designed with a sealing ring 13, a first spacer 14, a first spindle bearing 16, a second spindle bearing 17, a first bearing 23, a second bearing 24, and a second spacer 21 from front to back, which are locked by a first locking nut 28. The first end cover 12 and the second end cover 22 are arranged at both ends of the cooling jacket 18, and are arranged in sequence with the sealing ring 13, the first spacer 14, the first spindle bearing 16, the second spindle bearing 17, the first bearing 23, the second bearing 24, and the second spacer 21. At the same time, a first locking nut 28 is installed on the side of the second spacer 21. The first locking nut 28 can drive the position of the second spacer 21 to be limited, so as to avoid the problem of loosening of the second spacer 21 during installation and use.
[0035] refer to Fig. 9 The third spacer 27 is arranged on one side of the first gear 26, and the rear end of the first gear 26 is successively installed with the fourth spindle bearing 35, the second outer spacer 34, the second inner spacer 33, the third spindle bearing 32 and the second locking nut 31, the second locking nut 31 is arranged on the outside of the milling shaft 9, and is arranged on one side of the first gear 26 through the third spacer 27, and the rear end of the first gear 26 is installed with the fourth spindle bearing 35, the second outer spacer 34, the second inner spacer 33, the third spindle bearing 32 and the second locking nut 31, which is convenient for the subsequent equipment installation.
[0036] refer to Figure 4 A fourth spacer 30 is installed between the first gear 26 and the first inner spacer 19, and a lubricating oil inlet is provided between the fourth spacer 30 and the boring shaft 10. The lubricating oil inlet is provided between the fourth spacer 30 and the boring shaft 10, that is, lubricating oil can be injected into the interior of the machine tool spindle body 1 through the lubricating oil inlet, which facilitates the stability of the machine tool spindle body 1 when driving the cleaning rod 3 to rotate, and at the same time reduces the friction resistance during rotation.
[0037] refer to Figure 1 The first end cover 12 and the cooling jacket 18 are designed with air inlet holes, the cooling jacket 18 is designed with a spiral circulation groove, a condensation pipe is provided on the outside of the spiral circulation groove, and air inlet holes are opened on the outside of the first end cover 12 and the cooling jacket 18. The air inlet holes can drive the evacuation to the inside of the machine tool spindle body 1. By driving the gas circulation, the cooling efficiency of the equipment can be improved, and a condensation pipe is provided on the outside of the cooling jacket 18, which can also improve the condensation efficiency of the equipment.
[0038] Working principle: When in use, the outside of the cleaning rod 3 is sleeved with the boring shaft 10, and the boring shaft 10 and the milling shaft 9 are sleeved with each other and restricted. At the same time, the outside of the milling shaft 9 is sequentially installed with the first spacer 14, the second spindle bearing 17, the first spindle bearing 16, the first inner spacer 19, the first outer spacer 20, the second bearing 24, and the first bearing 23. At the same time, the cooling sleeve 18 is arranged outside the first outer spacer 20, and the second spacer 21 and the second end cover 22 drive the position of the cooling sleeve 18 to be restricted, and the first locking nut 28 is installed on the side of the second end cover 22, and at the same time, the first spacer 14, the second spindle bearing 17, the first spindle bearing 16, the first inner spacer 19, the first outer spacer 20, the second bearing 24, and the first bearing 23 are sequentially installed. The third spacer 27, the first gear 26, the fourth spacer 30, the second gear 29, the fourth spindle bearing 35 and the third spindle bearing 32, and the second locking nut 31 is installed on the side of the third spindle bearing 32, that is, the machine tool spindle body 1 is assembled and contacted as a whole. After the machine tool spindle body 1 is installed inside the spindle box 2, the outer part of the first gear 26 is sleeved on the high-torque main transmission chain, and the outer part of the second gear 29 is sleeved on the high-speed main transmission chain, which not only solves the shortcomings of the original boring and milling machine spindle, but also perfectly realizes the high torque and high speed of the boring and milling machine spindle, and both can be achieved.
[0039] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A high-torque, high-speed, center-type machine tool spindle, comprising a machine tool spindle body (1), a spindle box (2) and a cleaning rod (3), wherein the interior of the machine tool spindle body (1) contains a boring spindle (10), the upper end of the boring spindle (10) is sleeved with a milling spindle (9), a guide sleeve (15) is installed between the boring spindle (10) and the milling spindle (9), the outer end of the milling spindle (9) is sleeved with a first end cover (12), the first end cover (12) and the milling spindle (9) are connected to each other. A protective cover (11) is sleeved on the outside of the shafts (9); a boring shaft end face key (7) is arranged between the cleaning rod (3) and the boring shaft (10); a second screw (8) is installed inside the boring shaft end face key (7); a milling shaft end face key (5) is installed inside the milling shaft (9); a first screw (6) is arranged inside the milling shaft end face key (5); a spindle mounting screw (4) is installed outside the first end cover (12), characterized in that: A first spacer (14) is provided between the milling shaft (9) and the first end cover (12) via a sealing ring (13); one side of the first spacer (14) is located outside the milling shaft (9) and is sequentially mounted with a first spindle bearing (16) and a second spindle bearing (17); the outside of the milling shaft (9) is sleeved with a first inner spacer (19); the outside of the first inner spacer (19) is sleeved with a first outer spacer (20); the rear end of the first inner spacer (19) is located outside the milling shaft (9) and is sequentially sleeved with a second bearing (24) and a first bearing (23); the outside of the first outer spacer (20) is sleeved with a cooling jacket (18); the side of the first bearing (23) is mounted with a second spacer (21); the outside of the second spacer (21) is clamped with a second end cover (22); the first outer spacer (20) is sleeved with a second end cover (22); A first locking nut (28) is sleeved on the outside of the milling shaft (9), a third spacer (27) is installed on the side of the first locking nut (28), a key block (25) is sleeved on the end of the first outer spacer (20) and located on the outside of the milling shaft (9), a first gear (26) is sleeved on the outside of the key block (25), a fourth spacer (30) and a second gear (29) are sequentially installed on the side of the first gear (26), a fourth spindle bearing (35) and a third spindle bearing (32) are installed on one side of the side of the second gear (29), a second inner spacer (33) and a second outer spacer (34) are sleeved on one side between the connection between the third spindle bearing (32) and the fourth spindle bearing (35), and a second locking nut (31) is arranged on the side of the third spindle bearing (32) and located on the outside of the end of the boring shaft (10).
2. The high-torque and high-speed Swiss-type machine tool spindle according to claim 1, characterized in that: The first gear (26) and the second gear (29) are arranged between the milling shaft (9) and the fourth main shaft bearing (35); the outer portion of the first gear (26) is sleeved on a high-torque main transmission chain, and the outer portion of the second gear (29) is sleeved on a high-speed main transmission chain.
3. The high-torque and high-speed Swiss-type machine tool spindle according to claim 1, characterized in that: The spindle box (2) is sleeved on the outside of a machine tool spindle body (1), the cleaning rod (3) is arranged inside the machine tool spindle body (1), and the boring spindle (10) arranged inside the machine tool spindle body (1) is kept in a fitted state with the outside of the cleaning rod (3).
4. The high-torque and high-speed Swiss-type machine tool spindle according to claim 1, characterized in that: A boring shaft (10) is nested in the milling shaft (9), a key block (25) is designed inside the first gear (26) installed at the rear of the milling shaft (9), three guide sleeves (15) are installed, and the guide sleeves (15) are arranged inside the milling shaft (9).
5. The high-torque and high-speed Swiss-type machine tool spindle according to claim 1, characterized in that: The first main shaft bearing (16) and the second main shaft bearing (17) and the first bearing (23) and the second bearing (24) are paired in pairs and installed in DBB configuration. The first inner spacer (19) and the first outer spacer (20) are arranged inside the first main shaft bearing (16) and the second bearing (24).
6. The high-torque and high-speed Swiss-type machine tool spindle according to claim 1, characterized in that: The milling shaft (9) is sequentially designed with a sealing ring (13), a first spacer (14), a first spindle bearing (16), a second spindle bearing (17), a first bearing (23), a second bearing (24), and a second spacer (21) from front to back, which are locked by a first locking nut (28). The first end cover (12) and the second end cover (22) are arranged at both ends of the cooling jacket (18).
7. The high-torque and high-speed Swiss-type machine tool spindle according to claim 1, characterized in that: The third spacer (27) is arranged on one side of the first gear (26), and the rear end of the first gear (26) is sequentially installed with a fourth spindle bearing (35), a second outer spacer (34), a second inner spacer (33), a third spindle bearing (32) and a second locking nut (31), and the second locking nut (31) is arranged on the outside of the milling shaft (9).
8. The high-torque and high-speed Swiss-type machine tool spindle according to claim 1, characterized in that: A fourth spacer sleeve (30) is installed between the first gear (26) and the first inner spacer sleeve (19), and a lubricating oil inlet is provided between the fourth spacer sleeve (30) and the boring shaft (10).
9. The high-torque and high-speed Swiss-type machine tool spindle according to claim 1, characterized in that: The first end cover (12) and the cooling jacket (18) are provided with air inlet holes, the cooling jacket (18) is provided with a spiral circulation groove, and a condensation pipe is provided outside the spiral circulation groove.