Machine tool body and machine tool

Abstract

The utility model provides a machine tool body and a machine tool, the machine tool body comprises a machine tool body, an inclined mounting surface is formed at the top of the machine tool body, the mounting surface comprises a high mounting surface and a low mounting surface, the high mounting surface is positioned on the higher side of the mounting surface along the inclined direction, and two first guide rails are arranged on the high mounting surface along the length direction of the machine tool body; a motor mounting part is arranged at one end of each first guide rail, two second guide rails are arranged on the lower mounting face in the length direction of the lathe bed, a spindle box mounting part is arranged at one ends of the two second guide rails, and the width between the two second guide rails is smaller than that between the two first guide rails. The planes where the top faces of the two second guide rails are located are parallel and lower than the planes where the top faces of the two first guide rails are located, and a drain hole is formed below the second guide rail located on the bottom side. By optimizing the guide rail arrangement of the machine tool body, reasonably arranging the mounting positions of the motor and the spindle box and ingeniously designing the drain holes, the stable transmission structure of the machine tool body is achieved, and the overall performance of the machine tool is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of machine tool, more specifically, relate to a machine tool body and machine tool. BACKGROUND

[0002] In the modern mechanical processing field, the machine tool is the core equipment for realizing the processing of parts, and the performance of the machine tool directly affects the quality and production efficiency of industrial products. The machine tool body is the basic structure part of the machine tool, and the rationality of its design and the reliability of its performance are crucial. However, the traditional machine tool body has deficiencies in the coordination of movement between components and the integration of multiple functions, making it difficult to meet the comprehensive needs of modern mechanical processing for high precision, high efficiency and multi-function processing.

[0003] The traditional machine tool body has a simple layout of guide rails and a single installation position of components. The guide rails on the bed body lack targeted design according to the functional differences and stress differences of components, resulting in the inability to provide the most suitable support and guidance for each moving component when facing different types of processing tasks and corresponding changes in cutting force in actual processing. In addition, the design of the chip removal system of the traditional machine tool body is insufficient, and the iron chips and cooling liquid generated by the compact structure of the machine tool body during cutting processing cannot be discharged in time, and a large amount of accumulation in the machine tool body affects the processing stability and precision of the entire machine tool. SUMMARY

[0004] The utility model aims at providing a novel machine tool body and machine tool, aiming at solving the problems of simple layout of guide rails, single installation position of components and insufficient chip removal design of the traditional machine tool body. By optimizing the guide rail setting of the machine tool body, reasonably arranging the installation position of the motor and the spindle box, and ingeniously designing the drain hole, a stable transmission structure of the machine tool body is realized, and the overall performance of the machine tool is improved.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0006] On the one hand, the utility model provides a kind of machine tool body, including bed body, the top of the bed body forms installation surface, the installation surface is inclinedly arranged, the installation surface includes high part installation surface and low part installation surface, the high part installation surface is located in the side of the installation surface along inclined direction higher, the high part installation surface is provided with two first guide rails along the length direction of the bed body, one end of two first guide rails is provided with motor installation part, the low part installation surface is provided with two second guide rails along the length direction of the bed body, one end of two second guide rails is provided with spindle box installation part, the width between two second guide rails is less than the width between two first guide rails, the plane where the top surface of two second guide rails is parallel and lower than the plane where the top surface of two first guide rails, drain hole is provided below the second guide rail located at the bottom side.

[0007] In some embodiments, the top surface of the two first guide rails is inclined at an angle of 30-45° with the plane in which the top surface of the two second guide rails lies; the two first guide rails and / or the two second guide rails are hard rails.

[0008] In some embodiments, a first groove is formed between the two first guide rails, a second groove is formed between the two second guide rails, the bottom surface of the second groove is parallel to and lower than the bottom surface of the first groove, the top surface of the spindle head mounting portion is higher than the bottom surface of the second groove, and the spindle head mounting portion and the motor mounting portion are located at the same end in the length direction of the lathe bed.

[0009] In some embodiments, a saddle is slidably arranged above the first guide rail, a tool tower is slidably arranged on the saddle, a motor is mounted on the motor mounting portion, a lead screw is arranged in the first groove, a nut is arranged on the lead screw, one end of the lead screw is connected with the motor, and the nut is connected with the saddle; a spindle head is mounted on the spindle head mounting portion, a spindle is mounted in the spindle head, a tailstock is slidably arranged above the second guide rail, the axis of the spindle is coaxial with the axis of the tailstock, and the axis of the spindle is parallel to the axis of the lead screw.

[0010] In some embodiments, an installation platform is arranged on the side of the two first guide rails away from the motor mounting portion, and the bottom surface of the installation platform is parallel to the horizontal plane.

[0011] In some embodiments, a chip pocket is further arranged, the drain hole is arranged along the length direction of the second guide rail, the drain hole is a plurality of and uniformly distributed, and the chip pocket is arranged below the drain hole along the length direction of the lathe bed.

[0012] In some embodiments, a spindle head pad is arranged on the top of the spindle head mounting portion, the top surface of the spindle head mounting pad is parallel to the horizontal plane, and the spindle head mounting pad is a hollow structure.

[0013] In some embodiments, two protruding portions are arranged at the two ends of the bottom of the lathe bed respectively, the two protruding portions have a predetermined distance therebetween, the two protruding portions extend outwardly along the width direction of the lathe bed, and the two protruding portions are integrally formed with the lathe bed.

[0014] In some embodiments, the interior of the lathe bed is a hollow structure, and a transverse reinforcing rib is arranged in the interior of the lathe bed, and the plane in which the transverse reinforcing rib lies is perpendicular to the mounting surface.

[0015] In another aspect, the utility model provides a kind of machine tool, including protective cover and the machine tool body of the utility model, the protective cover is fixed in the upper of the machine tool body.

[0016] The utility model discloses the beneficial effect lies in: the utility model discloses the guide rail setting of machine tool body is optimized, and the position of motor and main shaft box installation department is arranged reasonably, and the ingenious design drainage hole is realized machine tool body stable transmission structure, and the overall performance of machine tool is promoted. BRIEF DESCRIPTION OF DRAWINGS

[0017] The utility model is further illustrated below in connection with the drawings and examples, and in the drawings:

[0018] Figure 1 It is the structure schematic diagram of machine tool body of the utility model;

[0019] Figure 2 It is the side view of machine tool body partial component of the utility model;

[0020] Figure 3 It is the plan view of machine tool body of the utility model;

[0021] Figure 4 It is the section view of machine tool body of the utility model;

[0022] In which the figure mark is:

[0023] 1-bed, 2-first guide rail, 3-second guide rail, 4-bed saddle, 5-tool turret, 6-motor, 7-screw rod, 8-main shaft box, 9-main shaft, 10-tailstock

[0024] 11-installation surface, 12-motor installation department, 13-main shaft box installation department, 14-drainage hole, 15-installation platform, 16-chip receiving groove, 17-main shaft box pad, 18-protruding part, 19-transverse reinforcing rib, 21-first recess, 31-second recess

[0025] 111-high installation surface, 112-low installation surface DETAILED DESCRIPTION

[0026] In order to make the personnel in the technical field better understand the utility model scheme, the technical scheme in the embodiment of the utility model will be described clearly and completely below in connection with the drawings in the embodiment of the utility model, and obviously, the described embodiment only is a part of the embodiment of the utility model, but not all the embodiment. Based on the embodiment in the utility model, all other embodiments obtained by the person skilled in the art without making creative labor should belong to the scope of the utility model protection.

[0027] It should be noted that in the description of the utility model, if the direction description such as the upper, lower, front, rear, left, right and the like is indicated or implied, the orientation or positional relationship shown in the drawing is only for the convenience of describing the utility model and simplifying the description, and it is not indicated or implied that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore it cannot be understood as a limitation on the utility model.

[0028] In the description of the utility model, the meaning of several is one or more, and the meaning of multiple is more than two, greater than, less than, more than and the like are not included in the number, and above, below, within and the like are included in the number.If the first and the second are described, it is only for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or the sequence of indicated technical features.

[0029] In addition, the terms "first", "second" and the like are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features limited by "first" and "second" can explicitly or implicitly include one or more features.

[0030] In the description of the utility model, it should be noted that, unless otherwise specified and limited, the term "connection" should be broadly understood, for example, it can be fixedly connected or movably connected, or it can be detachably connected or non-detachably connected, or integrally connected;It can be mechanically connected, or electrically connected or can communicate with each other;It can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal communication of two elements, indirect communication or the interaction relationship of two elements.

[0031] The following disclosure provides many different embodiments or examples for implementing different aspects of the utility model.

[0032] As shown in Figures 1 to 4 The utility model provides machine tool body one aspect provided in the utility model, including lathe bed 1, lathe bed 1 as the structural basis of machine tool body, its top forms mounting surface 11, and mounting surface 11 is inclined to set, and mounting surface 11 includes high part mounting surface 111 and low part mounting surface 112, and high part mounting surface 111 is located the higher side of mounting surface 11 along the inclined direction, and provides the basis for the reasonable structural layout of machine tool body.

[0033] The upper mounting surface 111 has two first guide rails 2 arranged along the length of the bed 1, with a motor mounting part 12 at one end of each first guide rail 2. The lower mounting surface 112 has two second guide rails 3 arranged along the length of the bed 1, with a spindle box mounting part 13 at one end of each second guide rail 3. The arrangement of the upper and lower mounting surfaces 111 and 112 allows the first guide rails 2 and second guide rails 3 to be positioned at different heights, forming a staggered structural layout. This allows for efficient use of space based on the functions and movement requirements of different components of the machine tool, avoiding interference between components and enhancing the compactness and rationality of the overall machine tool structure. The motor mounting part 12 at one end of the first guide rail 2 enables the motor to establish a transmission connection with the moving parts on the first guide rail via the shortest and most direct path, reducing energy loss and transmission errors during power transmission and improving power transmission efficiency. The spindle box mounting part 13 at one end of the second guide rail 3 facilitates the coordinated work of the spindle box and the moving parts on the second guide rail, ensuring the relative positional accuracy of the workpiece and tool during machining.

[0034] Meanwhile, the width between the two second guide rails 3 is smaller than the width between the two first guide rails 2, and the plane containing the top surfaces of the two second guide rails 3 is parallel and lower than the plane containing the top surfaces of the two first guide rails 2. The first guide rails 2 are key guiding components on the high mounting surface 111, guiding the movement of components such as the saddle. During the movement, the large loads generated by cutting forces, gravity, etc., are addressed by increasing the width between the two first guide rails 2, providing more stable support for the saddle and the tool turret and other components mounted on it. Furthermore, these components need to move frequently and perform cutting operations during machining, and the wider spacing between the first guide rails 2 helps to distribute the load and improve the smoothness and accuracy of the movement. The second guide rails 3 are mounted on the low mounting surface 112 and mainly guide the movement of components such as the tailstock. Their movement is relatively simple, and the width requirement between the guide rails is lower. Their width is smaller than that between the two first guide rails 2, which satisfies their functional requirements and optimizes the spatial layout of the bed 1. In addition, the plane on which the top surfaces of the two second guide rails 3 are located is parallel to and lower than the plane on which the top surfaces of the two first guide rails 2 are located, which lowers the center of gravity of the machine tool, enhances the stability of the machine tool during processing, and reduces swaying and vibration caused by an excessively high center of gravity.

[0035] Furthermore, a drain hole 14 is provided below the second guide rail 3 located on the bottom side, and the drain hole 14 and the second guide rail 3 form an organic whole in structure. As the moving track of components such as the tailstock, the second guide rail 3 is the main area where iron filings and coolant accumulate during the machining process. The position of the drain hole 14 allows these wastes to collect directly into the drain hole 14 below under the action of gravity, eliminating the need for a complex guide structure, and discharging the wastes from inside the bed 1, maintaining the cleanliness of the internal space of the machine tool body, and simplifying the spatial structure of the machine tool body.

[0036] In some embodiments, as shown in Figure 1 and Figure 2 the top surface of the two first guide rails 2 and the top surface of the two second guide rails 3 are both inclined at an angle of 30°-45°. During the machining process of the machine tool, the cutting force will generate different direction forces on the first guide rail 2 and the second guide rail 3, and the 30°-45° angle inclination setting can decompose part of the cutting force into components along the guide rail direction and perpendicular to the guide rail direction. Within the 30°-45° angle range, the decomposed force can be more reasonably distributed on the first guide rail 2, the second guide rail 3 and the bed 1 of the machine tool body, reducing the deformation and wear of the first guide rail 2 and the second guide rail 3 caused by the concentration of cutting force, and improving the stability of the machine tool during machining. When milling is performed, the cutting force of the cutter on the workpiece is large, and the inclined guide rail can better resist this external force to ensure the relative position accuracy of the cutter and the workpiece. The two first guide rails 2 can be hard rails, the two second guide rails 3 can be hard rails, or the two first guide rails 2 and the two second guide rails 3 are all hard rails. By using the high hardness and wear resistance of the hard rail, it can maintain its shape and accuracy when bearing external force, reducing the motion error caused by guide rail wear and deformation.

[0037] In some embodiments, as shown in Figure 1 and Figure 2 the two first guide rails 2 form a first groove 21 therebetween, and the two second guide rails 3 form a second groove 31 therebetween. The bottom surface of the second groove 31 is parallel and lower than the bottom surface of the first groove 21. The top surface of the spindle box mounting portion 13 is higher than the bottom surface of the second groove 31. The spindle box mounting portion 13 and the motor mounting portion 12 are located at the same end of the bed 1 in the length direction. The bottom surface of the second groove 31 is parallel and lower than the bottom surface of the first groove 21. The lower-positioned second groove 31 is suitable for installing components that have lower height requirements and need to use gravity to assist in chip removal or drainage, while the higher-positioned first groove 21 can accommodate transmission components that have higher requirements for accuracy and stability. This spatial relationship allows grooves of different heights to provide suitable installation and operation space for different functional components, forming a layered layout in the vertical direction of the machine tool body, and also helps to optimize the overall space utilization of the machine tool body and avoid interference between components.

[0038] Meanwhile, the top surface of the spindle box mounting portion 13 is higher than the bottom surface of the second groove 31, and the height difference ensures that the spindle box will not interfere with the components in the second groove 31 after installation, and also provides a certain space for adjusting the installation height of the spindle box. The spindle box mounting portion 13 and the motor mounting portion 12 are located at the same end of the bed 1 in the length direction, and are connected to the moving components on the first guide rail 2 through the transmission components in the first groove 31 to form a transmission structure of the system.

[0039] In some embodiments, as shown inFigure 1 and Figure 3 As shown in the drawings, the upper side of the first guide rail 2 is slidably provided with a saddle 4, the saddle 4 is slidably provided with a tool turret 5, the motor mounting portion 12 is mounted with a motor 6, the first groove 21 is provided with a lead screw 7, the lead screw is provided with a nut, one end of the lead screw 7 is connected with the motor 6, and the nut is connected with the saddle 4. The saddle 4 is in sliding cooperation with the first guide rail 2, the tool turret 5 is mounted on the saddle 4, and the tool turret 5 moves with the saddle 4 to realize tool position switching, and the three constitute the movement structure of the tool of the machine tool body; the motor 6 is mounted on the motor mounting portion 12 and connected with the saddle 4 through the lead screw 7, forming the power transmission structure of the machine tool body; the motor 6 drives the lead screw 7 to rotate and move, which is converted into the linear motion of the saddle 4 on the first guide rail 2, and the first groove 21 provides installation and operation space for the lead screw 4, ensuring stable and accurate power transmission.

[0040] In addition, the spindle box mounting portion 13 is mounted with a spindle box 8, the spindle box 8 is mounted with a spindle 9, and the upper side of the second guide rail 3 is slidably provided with a tailstock 10. The axis of the spindle 9 is coaxial with the axis of the tailstock 10, and the axis of the spindle 9 is parallel to the axis of the lead screw 7. The tailstock 10 is in sliding cooperation with the second guide rail 3, the second guide rail 3 provides guidance and support for the movement of the tailstock, and the tailstock 10 can adjust the distance from the spindle 9 on the second guide rail 3 according to the length of the workpiece to be machined, supporting workpieces of different lengths. When machining a long shaft workpiece, the spindle 9 drives the workpiece to rotate, and the tailstock 10 provides support at the other end. The coaxiality of the axis of the spindle 9 and the axis of the tailstock 10 ensures that the workpiece remains stable during rotation, reduces eccentricity caused by different shafts at both ends, and ensures that the machined workpiece has good roundness and straightness.

[0041] In some embodiments, as shown in Figure 1 and Figure 2 The side of the two first guide rails 2 away from the motor mounting portion 12 is provided with a mounting platform 15, and the bottom surface of the mounting platform 15 is parallel to the horizontal plane. The mounting platform is installed on the high portion mounting surface 111 where the first guide rail is located, and becomes an integral part of the machine tool body without hindering the normal movement of the saddle 4 and the tool turret 5 on the first guide rail 2. The mounting platform 15 can be used to install a protective cover, which cooperates with other protective structures of the machine tool body to block cutting debris, cooling liquid splashing, etc., to ensure the safety of the operator and the internal components of the machine tool are not disturbed by external debris. The bottom surface of the mounting platform 15 is parallel to the horizontal plane, which can quickly calibrate the levelness when installing the protective cover, reducing the time and difficulty of installation and debugging. The installation position of the mounting platform is closely coordinated with other components of the machine tool body in space, fully utilizing the space of the machine tool body, and improving the compactness of the machine tool body structure.

[0042] In some embodiments, as shown in Figure 1 and Figure 2As shown, the machine tool body further comprises a chip pocket 16, and the discharge holes 14 are arranged along the length direction of the second guide rail 3. The discharge holes 14 are multiple and uniformly distributed, and the chip pocket 16 is arranged below the discharge holes 14 along the length direction of the machine tool body 1. The chip pocket 16 cooperates with the discharge holes 14. The discharge holes 14 are uniformly distributed along the length direction of the second guide rail 3, and the chip pocket 16 is arranged below the discharge holes 14. During the machining process, the iron filings and the cooling liquid are discharged from the discharge holes 14 under the action of gravity and directly fall into the chip pocket 16 below. No additional power device is needed to assist in collection, forming an efficient waste collection system.

[0043] In some embodiments, as shown in Figure 1 As shown, the top of the spindle box mounting portion 13 is provided with a spindle box mounting pad 17. The top plane of the spindle box mounting pad 17 is parallel to the horizontal plane, and the spindle box mounting pad 17 is a hollow structure. The spindle box mounting pad 17 is installed on the top of the spindle box mounting portion 13 and is a transition structure between the spindle box 8 and the spindle box mounting portion 13. During the operation of the machine tool body, the spindle box mounting pad 17 can not only buffer the vibration and impact force generated during the operation of the spindle box 8, but also can adjust the thickness or position of the spindle box mounting pad 17 to fine-tune the installation height and levelness of the spindle box 8, thereby improving the installation accuracy of the spindle box 8. The parallel top plane of the spindle box mounting pad 17 relative to the horizontal plane can provide stable support for the spindle box 8, reduce the inclination or displacement of the spindle box 8 during operation, and improve the machining accuracy and stability. The hollow structure of the spindle box mounting pad 17 can deform elastically to some extent when vibrating, further dissipating the vibration energy and achieving the effect of shock absorption.

[0044] In some embodiments, as shown in Figure 1 As shown, the bottom of the machine tool body 1 is provided with two protruding portions 18 at both ends, respectively. The two protruding portions 18 have a predetermined distance between them, extend outward along the width direction of the machine tool body 1, and are integrally formed with the machine tool body 1. The protruding portions 18 are an important part of the machine tool body 1 and jointly bear various forces generated during the operation of the machine tool body, including the gravity of the machine tool body itself, the cutting force during machining, and the vibration impact force, etc. During the operation of the machine tool body, the center of gravity is distributed at various parts of the machine tool body 1. The protruding portions 18 at both ends of the bottom can evenly transmit the weight of the machine tool to the ground, avoiding excessive local pressure caused by concentrated support points and reducing the risk of deformation of the machine tool body. In addition, during the installation of the machine tool, the protruding portions 18 at both ends of the bottom facilitate positioning and fixing. The installer can quickly and accurately adjust the levelness and perpendicularity of the machine tool body according to the position of the protruding portions 18, reducing the installation time and workload. During the maintenance of the machine tool, the protruding portions 18 also facilitate the movement and adjustment of the position of the machine tool body by the operator, improving the efficiency of the maintenance work.

[0045] In some embodiments, as shown in Figure 4As shown, the inside of the bed body 1 is a hollow structure, and the bed body 1 is provided with a transverse reinforcing rib 19, and the plane where the transverse reinforcing rib 19 is located is perpendicular to the mounting surface 11. The inside hollow structure of the bed body 1 reduces the weight of the bed body 1 on the one hand, facilitating the transportation and installation of the machine tool body; on the other hand, it can play a damping effect, reducing the vibration generated when the machine tool body is running to the surrounding. At the same time, the hollow part can also be used to arrange the electrical circuit, cooling liquid pipeline and the like of the machine tool body, and optimize the space layout inside the machine tool body. In addition, the transverse reinforcing rib 19 is firmly connected between the two side walls inside the bed body, and forms an organic whole structure with the bed body 1. The plane where the transverse reinforcing rib 19 is located is perpendicular to the mounting surface 11, and the force generated by the components mounted on the mounting surface 11 can be transmitted to the transverse reinforcing rib through the bed body 1. The transverse reinforcing rib 19 can disperse and resist these forces in the vertical direction, further optimizing the stress structure of the bed body 1 and improving the overall stability of the machine tool body.

[0046] The utility model also provides a machine tool on the other side still provides a kind of machine tool body, including protective cover and above-mentioned any described machine tool body, protective cover is installed on the mounting platform 15 of machine tool body by installation, realize and the fixation of machine tool body, so that protective cover effectively covers the upper area of machine tool body, provides protection for the machining area of machine tool. Since the machine tool has the machine tool body as described above, it also has the effects of the machine tool body, which will not be repeated here.

[0047] Although the embodiments of the utility model have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and purposes of the utility model, and the scope of the utility model is defined by the claims and their equivalents.

Claims

1. A machine tool body comprising a bed body (1), the top of the bed body (1) forms a mounting surface (11), the mounting surface (11) is arranged obliquely, the mounting surface (11) comprises a high mounting surface (111) and a low mounting surface (112), the high mounting surface (111) is located on the side of the mounting surface (11) which is higher along the oblique direction, characterized in that, two first guide rails (2) are arranged along the length direction of the bed body (1) on the high mounting surface (111), one end of the two first guide rails (2) is provided with a motor mounting portion (12), two second guide rails (3) are arranged along the length direction of the bed body (1) on the low mounting surface (112), one end of the two second guide rails (3) is provided with a spindle box mounting portion (13), the width between the two second guide rails (3) is smaller than the width between the two first guide rails (2), the plane where the top surface of the two second guide rails (3) is located is parallel to and lower than the plane where the top surface of the two first guide rails (2) is located, a drain hole (14) is arranged below the second guide rail (3) on the bottom side.

2. The machine tool body according to claim 1, characterized in that, The plane where the top surface of the two first guide rails (2) is located and the plane where the top surface of the two second guide rails (3) is located are both inclined at an angle of 30°-45°; the two first guide rails (2) and / or the two second guide rails (3) are hard rails.

3. The machine tool body according to claim 2, characterized in that A first groove (21) is formed between the two first guide rails (2), a second groove (31) is formed between the two second guide rails (3), the bottom surface of the second groove (31) is parallel to and lower than the bottom surface of the first groove (21), the top plane of the spindle box mounting portion (13) is higher than the bottom surface of the second groove (31), the spindle box mounting portion (13) and the motor mounting portion (12) are located at the same end along the length direction of the bed body (1).

4. The machine tool body according to claim 3, characterized in that, A saddle (4) is slidably arranged above the first guide rail (2), a turret (5) is slidably arranged on the saddle (4), a motor (6) is mounted on the motor mounting portion (12), a lead screw (7) is arranged in the first groove (21), a nut is arranged on the lead screw (7), one end of the lead screw (7) is connected with the motor (6), and the nut is connected with the saddle (4). A spindle box (8) is mounted on the spindle box mounting portion (13), a spindle (9) is mounted in the spindle box (8), a tailstock (10) is slidably arranged above the second guide rail (3), the axis of the spindle (9) is coaxial with the axis of the tailstock (10), and the axis of the spindle (9) is parallel to the axis of the lead screw (7).

5. The machine tool body according to claim 4, characterized in that An installation platform (15) is arranged on the side of the two first guide rails (2) away from the motor mounting portion (12), and the bottom surface of the installation platform (15) is parallel to the horizontal plane.

6. Machine tool body according to any one of claims 1-5, characterized in that, A chip pocket (16) is further arranged, the drain hole (14) is arranged along the length direction of the second guide rail (3), the drain hole (14) is a plurality of and uniformly distributed, and the chip pocket is arranged below the drain hole (14) along the length direction of the bed body (1).

7. Machine tool body according to any one of claims 1-5, characterized in that The top of the spindle box mounting part (13) is provided with a spindle box mounting pad (17), the top plane of the spindle box mounting pad (17) is parallel to the horizontal plane, and the spindle box mounting pad (17) is a hollow structure.

8. Machine tool body according to any one of claims 1-5, characterized in that The bottom of the bed body (1) is provided with two protruding parts (18) respectively at both ends, the two protruding parts (18) have a predetermined distance, the two protruding parts (18) extend outward along the width direction of the bed body (1), and the two protruding parts (18) are integrally formed with the bed body (1).

9. Machine tool body according to any one of claims 1-5, characterized in that The inside of the bed body (1) is a hollow structure, and the inside of the bed body (1) is provided with a transverse reinforcing rib (19), and the plane where the transverse reinforcing rib (19) is located is perpendicular to the mounting surface (11).

10. A machine tool, characterized by The machine tool body comprises a protective cover and the machine tool body according to any one of claims 1-9, and the protective cover is fixed above the machine tool body.

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