Double-spindle double-tool-turret horizontal numerical control lathe

Abstract

The utility model discloses a double-spindle double-tool-turret horizontal numerical control lathe which comprises an inclined lathe body, and a left spindle box and a right spindle box which are oppositely arranged in the Z direction are arranged on the inclined lathe body. The left spindle box is fixedly connected to the inclined lathe bed, a first spindle unit is installed in the left spindle box, a first clamping mechanism is installed at the front end of the spindle unit, a first hydraulic control device is arranged at the rear end of the spindle unit to control the first clamping mechanism at the front end, and the right spindle box is in sliding connection with the inclined lathe bed to achieve Z-direction horizontal movement through a first moving mechanism. A second spindle unit is installed in the right spindle box, a second clamping mechanism is installed at the front end of the second spindle unit, and a second hydraulic control device at the rear end controls the second clamping mechanism at the front end. Automatic butt joint and face changing can be achieved, the complex process of clamping the front face and the back face of a single part at a time is completed, the cutting machining process of two workpieces is carried out at the same time, manual shutdown intervention is reduced, secondary clamping is prevented from affecting precision, and the numerical control machine tool has the advantages of being high in precision, high in rigidity, small in occupied area and high in functionality.

Description

Technical Field

[0001] The utility model relates to the technical field of numerical control machine tools, and particularly relates to a double-spindle double-turret horizontal numerical control lathe. Background Technique

[0002] With the continuous development of industrial automation, numerical control lathes have become important equipment for automated processing and production, and their market demand has increased year by year. Numerical control lathes can automatically control the machining of workpieces during the turning process. It is mainly used for the cutting machining of the inner and outer cylindrical surfaces, inner and outer conical surfaces, complex rotating inner and outer curved surfaces, and cylindrical and conical threads of disc-shaped parts or shaft-shaped parts. However, it is difficult to achieve the complex process of machining the front and back sides of a single part in one clamping.

[0003] However, the existing numerical control lathes have the following problems during the machining of parts: during the machining of parts, when the chair surface machining is completed, it is often necessary to manually stop the machine for intervention to adjust the parts and then perform secondary clamping, which will affect the machining accuracy. Therefore, it is necessary to design corresponding technical solutions to solve the existing technical problems. Content of the Utility Model

[0004] The purpose of the utility model is to provide a double-spindle double-turret horizontal numerical control lathe, which solves the technical problem that during the machining of parts, when the chair surface machining is completed, it is often necessary to manually stop the machine for intervention to adjust the parts and then perform secondary clamping, which will affect the machining accuracy.

[0005] To achieve the above object, the present utility model provides the following technical solutions: A horizontal CNC lathe with double spindles and double turrets, comprising: an inclined bed body, on which a left spindle box and a right spindle box are placed facing each other in the Z direction; the left spindle box is fixedly connected to the inclined bed body, a first spindle unit is installed inside the left spindle box, a first clamping mechanism is installed at the front end of the spindle unit, and a first hydraulic control device is provided at the rear end to control the first clamping mechanism at the front end; the right spindle box is slidably connected to the inclined bed body and realizes horizontal movement in the Z direction by a first moving mechanism, a second spindle unit is installed inside the right spindle box, a second clamping mechanism is installed at the front end of the second spindle unit, and a second hydraulic control device is provided at the rear end to control the second clamping mechanism at the front end; on the inclined bed body, an upper bed saddle, a lower bed saddle, an upper slide plate, a lower slide plate, an upper power turret, and a lower power turret are placed facing each other in the Z direction. The upper bed saddle is slidably connected to the inclined bed body and realizes horizontal movement in the Z direction by a second moving mechanism. The upper slide plate is slidably connected to the upper bed saddle, the upper power turret is installed on the upper slide plate and realizes movement in the X direction by a third moving mechanism, and an upper power tool head is installed on the upper power turret to realize rotational movement in the A direction. The lower bed saddle is slidably connected to the inclined bed body and realizes horizontal movement in the Z direction by a fourth moving mechanism. The lower slide plate is slidably connected to the lower bed saddle, the lower power turret is installed on the lower slide plate and realizes movement in the X direction by a fifth moving mechanism, and a lower power tool head is installed on the lower power turret to realize rotational movement in the A direction.

[0006] As a preferred solution of the present utility model: The first and second clamping mechanisms at the front ends of the main and auxiliary spindles are equipped with three-jaw chucks, and the chucks are controlled by the hydraulic control devices at the rear ends to clamp workpieces.

[0007] As a preferred solution of the present utility model: The hydraulic control devices at the rear ends of the main and auxiliary spindles are provided with brake bases, which are fixedly connected to the upper surface of the left spindle box by screws, and the hydraulic clamp is fixedly connected to the side surface of the brake base by screws; the hydraulic station is connected to the hydraulic clamps of the main and auxiliary spindles through hydraulic pipes to complete the braking and fixing of the main and auxiliary spindles, so that the main and auxiliary spindles will not be displaced due to cutting forces, and prevent the main spindle from slipping when the turning tool collides with the workpiece; the main spindle is connected to the main motor by a belt, and the auxiliary spindle is connected to the auxiliary main motor by a belt, and the motor output makes the belt drive the workpiece to rotate.

[0008] As a preferred solution of the present utility model: The first moving mechanism, the second moving mechanism, and the fourth moving mechanism use a screw-nut combination with double bearings at both ends, and the double nuts are pre-tightened. The end of the screw is connected to the motor through a coupling to realize horizontal movement in the Z direction; the third moving mechanism and the fifth moving mechanism use a screw-nut combination with double bearings at both ends, and the double nuts are pre-tightened, and are connected to the motor through a belt to realize movement in the X direction, while saving the space of the machine tool and having the advantages of simple maintenance and high transmission efficiency.

[0009] As a preferred embodiment of the present utility model: Two C-shaped hooks are fixedly connected to the front of the inclined bed body by screws, and two C-shaped hooks are fixedly connected to the rear of the inclined bed body by screws, making the hoisting convenient.

[0010] As a preferred embodiment of the present utility model: The electric box is placed at the rear of the inclined bed body, and a square hole is opened on the side to facilitate the wiring of the machine tool. Two sponge pads are placed in the middle of the square hole to protect the wires.

[0011] As a preferred embodiment of the present utility model: The hydraulic station is placed at the right rear of the inclined bed body, and the water tank chip conveyor is placed at the front side of the inclined bed body to provide water and oil supply for the double turrets and double spindles; The positions of the hydraulic station and the water tank are reasonably arranged, shortening the lengths of the water pipes and oil pipes and saving the production cost.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0013] 1. This solution designs a horizontal CNC lathe with double spindles and double turrets, which can realize automatic docking and face changing, complete the complex process of machining the front and back sides of a single part in one clamping, and can also complete the cutting process of two workpieces simultaneously, reducing manual downtime intervention and avoiding the influence of secondary clamping on the accuracy. It is equivalent to two high-precision CNC lathes, with the characteristics of high precision, high rigidity, small floor area and strong functionality.

[0014] 2. The bed body of the present utility model is cast with high-quality cast iron and has a reasonable rib plate structure, with strong rigidity. Both the double X / Z axes of the present utility model adopt linear guides, and the guide rail layout is optimized to achieve high rigidity and good dynamic performance. The spindle box is connected by scraping, with a lateral positioning base surface added, excellent rigidity, optimized spindle box structure, good thermal balance, intelligent control of the sub-spindle to improve the machining accuracy, an upper and lower split structure for convenient precision adjustment, full-automatic feeding can be realized in cooperation with the manipulator, a servo indexing double turret for efficient machining, optimized turret structure, overall performance improvement, power tools can be realized, and turning, milling and drilling integrated machining can be achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is the overall assembly structure diagram of the present utility model;

[0016] Figure 2 is the spindle assembly structure diagram of the present utility model;

[0017] Figure 3 is the sub-spindle assembly structure diagram of the present utility model;

[0018] Figure 4 is the Z-direction movement mechanism structure diagram of the present utility model;

[0019] Figure 5 is the X-direction movement mechanism and saddle assembly structure diagram of the present utility model;

[0020] Figure 6 The assembly structure diagram of the skateboard and tool rest of the present utility model;

[0021] Figure 7 The example diagram of the integration of loading and unloading with the automatic line of the present utility model.

[0022] In the figure: 1, inclined bed body; 2, left main spindle box; 3, right main spindle box; 4, upper saddle; 5, lower saddle; 6, upper skateboard; 7, lower skateboard; 8, upper power tool turret; 9, lower power tool turret; 10, first moving mechanism; 11, second moving mechanism; 12, third moving mechanism; 13, fourth moving mechanism; 14, fifth moving mechanism; 15, upper power tool bit; 16, lower power tool bit; 20, main spindle motor; 21, first main spindle unit; 22, first clamping mechanism; 23, first hydraulic control device; 24, hydraulic clamp hand; 25, first bracket; 26, second bracket; 27, main spindle box adjustment block; 29, main spindle motor base adjustment block; 30, sub-main spindle motor; 31, second main spindle unit; 32, second clamping mechanism; 33, second hydraulic control device; 34, right main spindle box base; 35, slider; 36, sub-main spindle motor base; 37, adjustment block; 38, third bracket; 39, hydraulic clamp hand; 40, second motor; 41, X-direction guide rail; 42, slider one; 43, long strip pressing block; 44, motor connecting plate; 61, slider two; 80, power motor; 81, tool rest base; 82, grinding; 110, first motor; 111, Z-direction motor base; 112, first lead screw; 113, first bearing seat; 114, first nut; 115, iron impact block; 116, impact block one; 117, impact block two; 118, first double nut; 121, second lead screw; 122, second bearing seat; 123, third bearing seat; 124 second nut; 125, first anti-collision block; 126, second anti-collision block; 127 second double nut; 128, pulley belt. Specific embodiments

[0023] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0024] Please refer to Figure 1-7, the present utility model provides a technical solution: a horizontal CNC lathe with double spindles and double turrets. On the inclined bed 1, there are a left spindle box 2 and a right spindle box 3 placed facing each other in the Z direction. The left spindle box 2 is fixed to the inclined bed 1 by scraping and is connected to the inclined bed 1 with six screws. There are two spindle box adjusting blocks 27 between the inclined bed 1 and the left spindle box 2 to facilitate the adjustment of the spindle box orientation. The side of the inclined bed 1 is connected to the spindle motor base 28, and the spindle motor 20 is fixedly connected to the spindle motor base 28. Two spindle motor base adjusting blocks 29 are connected to the inclined bed 1 with screws to facilitate the adjustment of the position of the spindle motor base 28 during installation and maintenance, thereby changing the position of the spindle motor 20.

[0025] The spindle unit 21 is installed inside the spindle box. The spindle motor 20 drives the spindle unit 21 to work through belt transmission. A chuck clamping 22 is installed at the front end of the spindle unit, and a first hydraulic cylinder control device 23 at the rear end controls the front chuck clamping 22. There is a hydraulic tong 24 between the spindle box and the hydraulic cylinder of the first hydraulic cylinder control device 23. A nearly parallelogram bracket 25 is fixedly connected to the left spindle box 2 with three screws. The first bracket 25 is connected to the hydraulic tong 24 to assist in supporting the tong and complete the brake function. The side of the spindle box is connected to a second bracket 26 to support the hydraulic cylinder device and increase the structural rigidity.

[0026] The right spindle box 3 is connected to the right spindle box base 34, and a grinding pad is provided between them to facilitate the adjustment of the position of the right spindle box 3. Four sliders 35 are connected to the bottom of the right spindle box base 34. The sliders 35 cooperate with the guide rails of the first moving mechanism 10 to achieve the Z-direction horizontal movement of the right spindle box. The side of the right spindle box base 34 is connected to the sub-spindle motor base 36, and the sub-spindle motor 30 is fixedly connected to the sub-spindle motor base 36. An adjusting block 37 is provided on the side of the right spindle box to adjust the position of the sub-spindle motor base 36. The second spindle unit 31 is installed inside the right spindle box 3. The sub-spindle motor 30 drives the second spindle unit 31 to work through pulley transmission. The middle of the sub-spindle motor base 36 is designed with a hollow to facilitate the assembly and maintenance of the pulley part. A chuck clamping 32 is installed at the front end of the second spindle unit 31, and a second hydraulic cylinder control device 33 at the rear end controls the front chuck clamping 32. There is a hydraulic tong 39 between the right spindle box 3 and the hydraulic cylinder. A nearly parallelogram third bracket 38 is fixedly connected to the right spindle box 3 with three screws. The third bracket 38 is connected to the hydraulic tong 39 to assist in supporting the hydraulic tong 39 and complete the brake function. The side of the sub-spindle box is connected to a ladder-shaped bracket to support the second hydraulic cylinder control device 33.

[0027] The first moving mechanism 10, the second moving mechanism 11, and the fourth moving mechanism 13 are Z-direction moving mechanisms and are evenly distributed on the inclined bed 1, as Figure 4As shown in the figure, a double-bearing structure at both ends of the combination of the first lead screw 112 and the first nut 114 is used, and the first double nut 118 is pre-tightened. Specifically, the end of the first lead screw 112 is connected to the first motor 110 through a coupling to achieve Z-direction transmission. The first motor 110 is connected to the Z-direction motor base 111. The Z-direction motor base 111 is provided with double bearings. A second bumper 117 is placed at the front end of the Z-direction motor base 111 to protect the Z-direction motor base 111 and prevent the first nut 114 from hitting the Z-direction motor base 111 during movement, resulting in more gaps in the moving mechanism and affecting the transmission accuracy. Similarly, an iron bumper 115 and a second bumper 116 are provided at the left end of the first lead screw 112. A first bearing seat 113 is placed on the left side of the iron bumper 115, and double bearings are provided inside the first bearing seat 113.

[0028] The third moving mechanism 12 and the fifth moving mechanism 14 are X-direction moving mechanisms. As Figure 5 shown in the figure, the two are respectively arranged on the upper bed saddle 4 and the lower bed saddle 5, combined with the second lead screw 121 and the second nut 124, with a double-bearing structure at both ends, and the double nut 127 is pre-tightened. Second bearing seats 122 and third bearing seats 123 are provided at both ends of the second lead screw 121. A first anti-collision block 125 is placed at one end of the second bearing seat 122, and a second anti-collision block 126 is placed at one end of the third bearing seat 123. The two bearing seats are fixedly connected to the bed saddle by six screws. Four slider 1s 42 are connected to the bottom of the bed saddle and cooperate with the Z-direction guide rail of the inclined bed to achieve Z-direction movement. The end of the bed saddle is fixedly connected to the motor connecting plate 44. The motor connecting plate 44 is combined with the pulley belt 128 to connect the X-direction moving mechanism and the second motor 40. The output of the second motor 40 provides power for the X-direction moving mechanism. The inclined downward design of the second motor 40 saves the space of the machine tool and has the advantages of simple maintenance and high transmission efficiency.

[0029] Two X-direction guide rails 41 are placed on the bed saddle. As Figure 5-6 shown in the figure, ten long pressing blocks 43 are placed on both sides of the bed saddle to press the two X-direction guide rails 41. The slide plate is connected with four slider 2s 61 and cooperates with the X-direction guide rail 41 to be slidably connected to the bed saddle to achieve X-direction movement through the X-direction moving mechanism. The power turret is installed on the slide plate, and the power tool head is installed on the upper power turret 8 to achieve A-direction rotation movement. A tool rest base 81 and a grinding pad 82 are placed between the upper power turret 8 and the slide plate. The end of the power turret is connected to the power motor 80. As Figure 7 The utility model can be matched with a truss manipulator to complete the integration of automatic loading and unloading and automatic line processing, greatly improving the production efficiency.

[0030] The upper power turret 8 is installed on the upper slide plate 6 and realizes X-axis and Z-axis movements by using the second moving mechanism 11 and the third moving mechanism 12. The lower power turret 9 is installed on the lower slide plate 7 and realizes X-axis and Z-axis movements by using the fourth moving mechanism 13 and the fifth moving mechanism 14. The inclined bed 1 is an integrally cast bed with internal reinforcing ribs designed. The X-axis and Z-axis components on the inclined bed 1 both adopt linear guide rails and are evenly horizontally distributed on the inclined bed 1.

[0031] In the description of the present invention, it should be understood that the orientation or positional relationships indicated by the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inner", "front", "center", "both ends", etc. are based on the orientation or positional relationships shown in the drawings. These are only for the convenience of describing 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. Therefore, it should not be construed as a limitation to the present invention.

[0032] In addition, the terms "first", "second", "third", "fourth" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first", "second", "third", "fourth" may explicitly or implicitly include at least one of such features.

[0033] In the present invention, unless otherwise clearly defined and limited, the terms "installed", "set", "connected", "fixed", "swiveling connection", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. It can be the internal communication of two elements or the interaction relationship between two elements. Unless otherwise clearly limited, for those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A horizontal CNC lathe with two spindles and two turrets, comprising an inclined bed (1), characterized in that: On the inclined bed body (1), a left main spindle box (2) and a right main spindle box (3) are placed facing each other in the Z direction. The left main spindle box (2) is fixedly connected to the inclined bed body (1). A first main spindle unit (21) is installed in the left main spindle box (2). A first clamping mechanism (22) is installed at the front end of the first main spindle unit (21), and a first hydraulic control device (23) is at the rear end. The hydraulic control device (23) controls the first clamping mechanism (22) at the front end. A first moving mechanism (10) is installed on the inclined bed body (1). The right main spindle box (3) is slidably connected to the inclined bed body (1) and realizes horizontal movement in the Z direction by means of the first moving mechanism (10). A second main spindle unit (31) is installed in the right main spindle box (3). A second clamping mechanism (32) is installed at the front end of the second main spindle unit (31), and a second hydraulic control device (33) is at the rear end. The second hydraulic control device (33) controls the second clamping mechanism (32) at the front end. On the inclined bed body (1), an upper bed saddle (4), a lower bed saddle (5), an upper slide plate (6), a lower slide plate (7), an upper power turret (8) and a lower power turret (9) are placed facing each other in the Z direction. The inclined bed body (1) is equipped with a second moving mechanism (11) and a fourth moving mechanism (13). The upper bed saddle (4) is slidably connected to the inclined bed body (1) and realizes horizontal movement in the Z direction by means of the second moving mechanism (11). The upper slide plate (6) is slidably connected to the upper bed saddle (4). A third moving mechanism (12) is installed on the upper bed saddle (4). The upper power turret (8) is installed on the upper slide plate (6) and realizes movement in the X and Z directions by means of the second moving mechanism (11) and the third moving mechanism (12). An upper power tool head (15) is installed on the upper power turret (8) to realize rotational movement in the A direction. The lower bed saddle (5) is slidably connected to the inclined bed body (1) and realizes horizontal movement in the Z direction by means of the fourth moving mechanism (13). The lower slide plate (7) is slidably connected to the lower bed saddle (5). A fifth moving mechanism (14) is installed on the lower bed saddle (5). The lower power turret (9) is installed on the lower slide plate (7) and realizes movement in the X and Z directions by means of the fourth moving mechanism (13) and the fifth moving mechanism (14). A lower power tool head (16) is installed on the lower power turret (9) to realize rotational movement in the A direction.

2. The horizontal CNC lathe with two spindles and two turrets according to claim 1, characterized in that: The inclined bed body (1) adopts an integral casting bed body with internal reinforcing ribs designed.

3. A horizontal CNC lathe with two main spindles and two turrets according to claim 2, characterized in that: For the components on the inclined bed body (1) in the X-axis and Z-axis directions, linear guide rails are adopted and are evenly horizontally distributed on the inclined bed body (1).

4. A double-spindle double-turret horizontal CNC lathe according to claim 1, characterized in that: Both the left main spindle box (2) and the right main spindle box (3) are connected by scraping and are fixedly connected to the inclined bed body (1) using six screws.

5. A horizontal CNC lathe with two spindles and two turrets according to claim 1, characterized in that: The second main spindle unit (31) adopts an upper and lower split structure.

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