Double-spindle numerical control lathe

Abstract

The invention discloses a double-spindle numerical control lathe, relates to the technical field of numerical control lathes, and aims to solve the technical problem that the machining precision of parts is low due to the fact that the current numerical control lathe needs to clamp the parts for many times, the double-spindle numerical control lathe comprises a supporting mechanism, a first supporting block is arranged on one side of the top end of the working table, and a second supporting block is arranged on the other side of the top end of the working table; a second supporting block is arranged on the other side of the top end, the top end of the second supporting block is obliquely arranged, and a first mounting surface and a second mounting surface are separated; the first main shaft mechanism comprises a first rotating motor, the bottom end of the first rotating motor is fixed to the top end of the first supporting block, a rotating shaft is arranged above the output end of the first rotating motor, and the rotating shaft and the output end of the first rotating motor are jointly connected with a chain belt; the machining device is simple in structure and reasonable in design, the two ends of a part can be rapidly machined, multiple times of clamping are not needed, and the machining precision is high.

Description

Technical Field

[0001] The present invention relates to the technical field of numerically controlled lathes, and more specifically, to a double-spindle numerically controlled lathe. Background Art

[0002] With the continuous development of the manufacturing industry, the requirements for the precision, efficiency, and complexity of component processing are increasing day by day. When facing the processing of some complex parts or mass production, traditional single-spindle numerically controlled lathes gradually expose problems such as limited production efficiency and the influence of the number of clamping operations on machining accuracy. For example, in the processing of complex components such as automotive engine blocks and aeroengine impellers, multi-process and multi-surface machining are required.

[0003] Generally, a numerically controlled lathe is only equipped with one spindle assembly. After clamping the part to be machined on the spindle assembly, the tool in the turret performs turning machining on the part. According to actual usage requirements, both ends of some shaft parts need to be processed. When using the existing numerically controlled lathe for machining, after one end of the part is processed, the part needs to be removed from the spindle assembly first, and then the other end of the part is clamped, and the tool performs turning machining on the other end of the part, with a complex structure. Using this machining method, the part needs to be clamped multiple times, resulting in low precision of the machined part.

[0004] In view of this, we propose a double-spindle numerically controlled lathe. Summary of the Invention

[0005] The purpose of the present invention is to provide a double-spindle numerically controlled lathe to solve the technical problem that the current numerically controlled lathe needs to clamp the part multiple times, resulting in low machining accuracy of the part.

[0006] To solve the above technical problem, the present invention provides the following technical solution: A double-spindle numerically controlled lathe, comprising: a support mechanism, the support mechanism includes a workbench, one side of the top of the workbench is provided with a first support block, and the other side of the top is provided with a second support block. The top of the second support block is inclined and divides into a first mounting surface and a second mounting surface;

[0007] A first spindle mechanism, the first spindle mechanism includes a first rotating motor, the bottom end of the first rotating motor is fixedly connected to the top of the first support block, and a rotating shaft is arranged above the output end of the first rotating motor. The rotating shaft and the output end of the first rotating motor are jointly connected by a chain belt;

[0008] A driving mechanism, the driving mechanism includes two first slide rails, two sliders are slidably connected to both of the two first slide rails, and both of the two first slide rails are arranged on the first mounting surface. The tops of the two sliders are jointly connected to a first slide plate;

[0009] A milling mechanism, the milling mechanism includes a second support, a tool rest is installed on the second support, and the second support is vertically arranged on the first slide plate;

[0010] The second main shaft mechanism, the second main shaft mechanism includes two slide rails III, the two slide rails III are placed at the top of the second installation surface, and two slide blocks III are slidably connected to both of the two slide rails III. A slide plate III is jointly connected to the tops of the two slide blocks III. A support III is arranged at the top of the slide plate III, and a fixture is supported at the top of the support III.

[0011] The structure of the present invention is simple and reasonably designed. It can also quickly process both ends of the part without multiple clamping, and has high machining accuracy.

[0012] Preferably, the top of the first support block is inclined and forms an angle with the horizontal plane, and the angle value of this angle is between 40° and 45°. The top of the second support block is inclined and forms an angle with the horizontal plane, and the angle value of this angle is between 40° and 45°. A discharge groove is opened on the upper end surface of the workbench, and a discharge hopper communicating with the inner bottom end of the discharge groove is inclined on the side of the workbench.

[0013] Preferably, the diameter value of the rotating shaft is greater than the diameter value of the output end of the first rotating motor, and a support I is arranged at the bottom end of the rotating shaft. The bottom end of the support I is inclined and fixed to the top of the first support block.

[0014] Preferably, the slide plate I is inclined and parallel to the first installation surface, and a driving block I is arranged at the bottom end of the slide plate I. A threaded rod I is spirally connected inside the driving block I, and a first servo motor is arranged at one end of the threaded rod I.

[0015] Preferably, two slide rails II are symmetrically arranged at the top of the slide plate I. A slide plate II is jointly connected to the tops of the two slide rails II, and a threaded rod II for driving the slide plate II to slide on the slide rails II is arranged between the two slide rails II. A second servo motor is arranged at the end of the threaded rod II.

[0016] Preferably, a tool rest is arranged on one side of the support II facing the first main shaft mechanism, and a second rotating motor for driving the tool rest to rotate is arranged on the other side.

[0017] Preferably, the length values of the two slide rails III are smaller than the length values of the two slide rails I, and one ends of the two slide rails III far from the first main shaft mechanism are flush with the ends of the two slide rails I.

[0018] Preferably, a threaded rod III is arranged between the two slide rails III. The threaded rod III is spirally connected to the slide plate III, and a third servo motor is arranged at one end of the threaded rod III.

[0019] Preferably, the fixture is placed above the discharge groove, and the diameter value of the fixture is smaller than the width value of the discharge groove.

[0020] Compared with the prior art, the beneficial effects of the present invention are:

[0021] 1. The present invention designs a support mechanism, a first main shaft mechanism, a drive mechanism, a milling mechanism, and a second main shaft mechanism. The structure is simple and reasonably designed. The first main shaft mechanism and the second main shaft mechanism are provided, which can process two workpieces simultaneously, equivalent to two single-spindle lathes working simultaneously. More processing tasks can be completed within the same time, significantly shortening the processing cycle. For example, when mass-producing small parts, a double-spindle CNC lathe can clamp two blank parts simultaneously and perform operations such as turning, drilling, and tapping at the same time. The production efficiency is nearly doubled compared to a single-spindle CNC lathe. When one spindle is performing processing, auxiliary operations such as workpiece loading and unloading and tool replacement can be carried out using the other spindle, thereby reducing the machine tool's downtime and improving the equipment utilization rate.

[0022] 2. The present invention also designs the first main shaft mechanism and the second main shaft mechanism. For some complex parts that require multi-sided processing, a single-spindle lathe may need to be clamped multiple times to complete all processes, and each clamping will introduce a certain clamping error. A double-spindle CNC lathe can complete more processing content in one clamping through the coordinated work between the two main shafts, reducing the number of clampings, thereby reducing the impact of clamping errors on machining accuracy. The CNC system of the double-spindle CNC lathe can precisely control and real-time monitor the movements of the two main shafts, and realize the error compensation function through software algorithms. For example, when it is found that the machining accuracy of one main shaft deviates, the machining parameters of the other main shaft can be adjusted for compensation to ensure the machining accuracy consistency of the two workpieces. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a schematic structural diagram of the present invention;

[0024] Figure 2 is of the present invention Figure 1 is a schematic structural diagram of the support mechanism in the present invention;

[0025] Figure 3 is of the present invention Figure 1 is a schematic structural diagram of the drive mechanism in the present invention;

[0026] Figure 4 is of the present invention Figure 1 is a schematic structural diagram of the milling mechanism in the present invention;

[0027] Figure 5 is of the present invention Figure 5 is a schematic structural diagram of the first moving mechanism in the present invention;

[0028] Figure 6 is of the present invention Figure 1 is a schematic structural diagram of the second main shaft mechanism in the present invention.

[0029] Explanation of the reference numerals in the drawings:

[0030] 1. Support mechanism; 11. Workbench; 12. First support block; 13. Second support block; 14. First mounting surface; 15. Second mounting surface; 16. Discharge chute; 17. Discharge hopper; 2. First main shaft mechanism; 21. First rotating motor; 22. Rotating shaft; 23. Chain belt; 24. First support; 3. Driving mechanism; 31. First slide rail; 32. First slider; 33. First slide plate; 34. First driving block; 35. First threaded rod; 36. First servo motor; 37. Second slide rail; 38. Second slide plate; 39. Second threaded rod; 310. Second servo motor; 4. Milling mechanism; 41. Second support; 42. Tool holder; 43. Second rotating motor; 5. Second main shaft mechanism; 51. Third slide rail; 52. Third slider; 53. Third slide plate; 54. Third threaded rod; 55. Third servo motor; 56. Third support; 57. Fixture. Specific embodiments

[0031] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0032] In the description of the embodiments of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the embodiments of the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the embodiments of the present invention, the meaning of "a plurality" is two or more, unless otherwise specifically defined.

[0033] In the embodiments of the present invention, unless otherwise clearly specified and defined, terms such as "installation", "connection", "linkage", "fixation" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral one; it may be a mechanical connection or an electrical connection; it may be a direct connection or an indirect connection through an intermediate medium, and it may be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances.

[0034] Please refer to Figure 1 、 Figure 2 and Figure 3 , a double-spindle numerically controlled lathe involved in the present invention includes: a support mechanism 1, the support mechanism 1 includes a workbench 11, a first support block 12 is arranged on one side of the top end of the workbench 11, a second support block 13 is arranged on the other side of the top end, the top end of the second support block 13 is inclined and divides a first mounting surface 14 and a second mounting surface 15, the top end of the first support block 12 is inclined and forms an angle with the horizontal plane, the angle value of this angle is between 40° and 45°, the top end of the second support block 13 is inclined and forms an angle with the horizontal plane, the angle value of this angle is between 40° and 45°, a discharge chute 16 is opened on the upper end surface of the workbench 11, and a discharge hopper 17 communicating with the bottom end inside the discharge chute 16 is arranged obliquely on the side surface of the workbench 11. The diameter value of the rotating shaft 22 is greater than the diameter value of the output end of the first rotating motor 21, and a first support 24 is arranged at the bottom end of the rotating shaft 22. The bottom end of the first support 24 is inclined and fixed to the top end of the first support block 12;

[0035] Please refer to again Figure 1 、 Figure 2 and Figure 3 , by supporting the first support 24 with the first support block 12 with an inclined surface, the inclined bed enables the chips to slide down naturally under the action of gravity, is not easy to accumulate in the processing area, facilitates the chip removal system to discharge the chips from the machine tool in time, reduces the influence of the chips on the processing accuracy, and also reduces the workload of workers cleaning the chips.

[0036] Please refer to Figure 1 and Figure 6, the second spindle mechanism 5 includes two third slide rails 51. The two third slide rails 51 are placed at the top of the second mounting surface 15. A third slider 52 is slidably connected to each of the two third slide rails 51. A third slide plate 53 is commonly connected to the tops of the two third sliders 52. A third support 56 is provided at the top of the third slide plate 53. A fixture 57 is supported on the top of the third support 56. The length value of the two third slide rails 51 is less than the length value of the two first slide rails 31. And the ends of the two third slide rails 51 away from the first spindle mechanism 2 are flush with the ends of the two first slide rails 31. A third threaded rod 54 is provided between the two third slide rails 51. The third threaded rod 54 is in screw connection with the third slide plate 53. And a third servo motor 55 is provided at one end of the third threaded rod 54. The fixture 57 is placed above the unloading chute 16. And the diameter value of the fixture 57 is less than the width value of the unloading chute 16;

[0037] Please refer to again Figure 1 and Figure 6 , by providing another spindle, the double-spindle CNC lathe can either simultaneously machine the same workpiece on the two spindles to improve the machining efficiency; or machine different workpieces separately to meet different machining requirements. In addition, the two spindles can also be combined to cooperatively machine some workpieces with special shapes, achieving machining tasks that are difficult to complete by a single-spindle lathe;

[0038] Please refer to Figure 1 , Figure 4 and Figure 5 , the driving mechanism 3 includes two first slide rails 31. A first slider 32 is slidably connected to each of the two first slide rails 31. And the two first slide rails 31 are both provided on the first mounting surface 14. A first slide plate 33 is commonly connected to the tops of the two first sliders 32. The milling mechanism 4. The milling mechanism 4 includes a second support 41. A tool holder 42 is mounted on the second support 41. And the second support 41 is vertically provided on the first slide plate 33. The first slide plate 33 is inclined and parallel to the first mounting surface 14. And a first driving block 34 is provided at the bottom of the first slide plate 33. A first threaded rod 35 is in screw connection inside the first driving block 34. A first servo motor 36 is provided at one end of the first threaded rod 35. Two second slide rails 37 are symmetrically provided at the top of the first slide plate 33. A second slide plate 38 is commonly connected to the tops of the two second slide rails 37. And a second threaded rod 39 for driving the second slide plate 38 to slide on the second slide rails 37 is provided between the two second slide rails 37. A second servo motor 310 is provided at the end of the second threaded rod 39. A tool holder 42 is provided on one side of the second support 41 facing the first spindle mechanism 2. And a second rotary motor 43 for driving the tool holder 42 to rotate is provided on the other side;

[0039] Please refer to again Figure 1 , Figure 4 and Figure 5, by obliquely setting 3 and 4, the cutting force on the tool during the cutting process can be more reasonably distributed. Due to the inclination of the tool rest, the direction of the cutting force will change to a certain extent, and a part of the force can be guided to the direction with better rigidity of the machine tool, thereby reducing the deformation of the tool and the machine tool, and improving the machining accuracy and surface quality. For example, when turning a slender shaft, a reasonable inclination angle of the tool rest can effectively reduce the bending deformation of the workpiece caused by the cutting force.

[0040] The embodiments disclosed in the present invention are preferred embodiments, but not limited thereto. Those of ordinary skill in the art can easily understand the spirit of the present invention based on the above embodiments and make different extensions and changes. However, as long as they do not depart from the spirit of the present invention, they are within the protection scope of the present invention.

Claims

1. A double-spindle CNC lathe, characterized in that, Comprising: A support mechanism (1), the support mechanism (1) includes a workbench (11), on one side of the top end of the workbench (11) there is a first support block (12), and on the other side of the top end there is a second support block (13). The top end of the second support block (13) is inclined and divides into a first mounting surface (14) and a second mounting surface (15); A first main shaft mechanism (2), the first main shaft mechanism (2) includes a first rotary motor (21). The bottom end of the first rotary motor (21) is fixed to the top end of the first support block (12), and above the output end of the first rotary motor (21) there is a rotating shaft (22). The rotating shaft (22) and the output end of the first rotary motor (21) are jointly connected by a chain belt (23); A driving mechanism (3), the driving mechanism (3) includes two first slide rails (31). On each of the two first slide rails (31) there is a first slider (32) slidably connected, and the two first slide rails (31) are both arranged on the first mounting surface (14). The top ends of the two first sliders (32) are jointly connected to a first slide plate (33). The first slide plate (33) is inclined and parallel to the first mounting surface (14), and at the bottom end of the first slide plate (33) there is a first driving block (34). Inside the first driving block (34) there is a first threaded rod (35) in screw connection. One end of the first threaded rod (35) is provided with a first servo motor (36). On the top end of the first slide plate (33) there are symmetrically arranged two second slide rails (37). The top ends of the two second slide rails (37) are jointly connected to a second slide plate (38), and between the two second slide rails (37) there is a second threaded rod (39) for driving the second slide plate (38) to slide on the second slide rails (37). The end of the second threaded rod (39) is provided with a second servo motor (310); A milling mechanism (4), the milling mechanism (4) includes a second support (41). On the second support (41) there is a tool holder (42) installed, and the second support (41) is vertically arranged on the first slide plate (33); A second main shaft mechanism (5), the second main shaft mechanism (5) includes two third slide rails (51). The two third slide rails (51) are placed on the top end of the second mounting surface (15), and on each of the two third slide rails (51) there is a third slider (52) slidably connected. The top ends of the two third sliders (52) are jointly connected to a third slide plate (53). On the top end of the third slide plate (53) there is a third support (56). On the top end of the third support (56) there is a fixture (57) supported.

2. A double-spindle CNC lathe according to claim 1, characterized in that, The top end of the first support block (12) is inclined and forms an angle with the horizontal plane, and the angle value of this angle is between 40° and 45°.

3. A double-spindle CNC lathe according to claim 1, characterized in that, The top end of the second support block (13) is inclined and forms an angle with the horizontal plane, and the angle value of this angle is between 40° and 45°. On the upper end surface of the workbench (11) there is a discharge chute (16), and on the side of the workbench (11) there is a discharge hopper (17) inclined and communicating with the inner bottom end of the discharge chute (16).

4. A double-spindle CNC lathe according to claim 1, characterized in that, The diameter value of the rotating shaft (22) is greater than the diameter value of the output end of the first rotating motor (21), and a first support (24) is provided at the bottom end of the rotating shaft (22). The bottom end of the first support (24) is inclined and fixed to the top end of the first support block (12).

5. A double-spindle CNC lathe according to claim 1, characterized in that, A tool rest (42) is provided on one side of the second support (41) facing the first main shaft mechanism (2), and a second rotating motor (43) for driving the tool rest (42) to rotate is provided on the other side.

6. A double-spindle CNC lathe according to claim 1, characterized in that, The length value of the two third slide rails (51) is less than the length value of the two first slide rails (31), and the ends of the two third slide rails (51) away from the first main shaft mechanism (2) are flush with the ends of the two first slide rails (31).

7. A double-spindle CNC lathe according to claim 1, characterized in that, A third threaded rod (54) is provided between the two third slide rails (51). The third threaded rod (54) is helically connected to the third slide plate (53), and a third servo motor (55) is provided at one end of the third threaded rod (54).

8. A double-spindle CNC lathe according to claim 1, characterized in that, The fixture (57) is placed above the discharge chute (16), and the diameter value of the fixture (57) is less than the width value of the discharge chute (16).

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