A horizontal CNC lathe

Abstract

The application discloses a horizontal numerical control lathe, and relates to the technical field of numerical control machine tools, which comprises a machine base, a tool holder fixedly arranged on the machine base, a tailstock slidingly arranged on the machine base, a turning tool arranged on the tool holder, a rotary disc rotatably arranged on the tailstock, a motor arranged on the tailstock and used for driving the rotary disc to rotate, a workpiece clamping tool arranged on the rotary disc, an auxiliary support slidingly arranged on the machine base, a feeding mechanism arranged on the machine base and used for driving the tailstock and the auxiliary support to slide, a positioning cavity arranged on the auxiliary support and used for allowing a workpiece to pass through, and multiple positioning pieces arranged in the positioning cavity and used for limiting the radial deviation of the workpiece. The application can improve the stability of the workpiece during machining, allows the turning tool to more accurately perform turning machining on the workpiece, and guarantees machining precision and machining quality.

Description

Technical Field

[0001] This application relates to the technical field of CNC machine tools, and in particular to a horizontal CNC lathe. Background Technology

[0002] Horizontal CNC lathes are extremely important machining equipment, occupying a key position in the manufacturing industry. With the continuous development of industry, the demand for horizontal CNC lathes is increasing, and their application scope is becoming increasingly wide, covering many fields such as aerospace, automobile manufacturing, and mechanical parts processing. The development of horizontal CNC lathes has brought significant value in improving production efficiency, ensuring machining accuracy, and reducing labor intensity, thus driving the progress of the entire manufacturing industry.

[0003] Existing horizontal CNC lathes typically consist of a machine base, a tool holder fixed to the machine base, and a tailstock slidably mounted on the machine frame. A cutting tool is mounted on the tool holder, and a turntable rotates on the tailstock. The tailstock is also equipped with a motor to drive the turntable, and a workpiece clamping fixture is installed on the turntable. This structure is a common design for horizontal CNC lathes. Its working principle is that the motor drives the turntable to rotate, causing the workpiece to rotate accordingly. Combined with the movement of the tailstock, the cutting tool on the tool holder performs cutting operations on the rotating workpiece.

[0004] However, when machining some long shaft-type parts, existing horizontal CNC lathes are prone to radial displacement of the workpiece during the machining process, which affects the machining accuracy of multiple workpieces. Summary of the Invention

[0005] In view of the problems existing in the prior art, this application provides a horizontal CNC lathe.

[0006] This application provides a horizontal CNC lathe, which adopts the following technical solution:

[0007] A horizontal CNC lathe includes a machine base, a tool holder fixedly mounted on the machine base, and a tailstock slidably mounted on the machine frame. A cutting tool is mounted on the tool holder. A turntable is rotatably mounted on the tailstock. A motor for driving the turntable to rotate is mounted on the tailstock. A workpiece clamping fixture is mounted on the turntable. An auxiliary support is also slidably mounted on the machine base. A feed mechanism for driving the tailstock and the auxiliary support to slide is mounted on the machine base. A positioning cavity for the workpiece to pass through is provided on the auxiliary support. Multiple positioning elements for limiting the radial displacement of the workpiece are provided in the positioning cavity.

[0008] Optionally, the auxiliary support includes a bottom support slidably mounted on the base and a top support rotatably mounted on the bottom support. The feeding mechanism is used to drive the bottom support to slide. The auxiliary support is provided with a fixing member for fixing the top support. The bottom support and the top support together form the positioning cavity, and both the bottom support and the top support are provided with the positioning member.

[0009] Optionally, the positioning element includes a positioning support rod, which is mounted on the top bracket or the bottom bracket, and each of the positioning support rods is rotatably provided with a roller, which is used to roll and connect with the surface of the workpiece.

[0010] Optionally, the positioning support rod is slidably mounted on the bottom bracket or the top bracket, and the bottom bracket and the top bracket are respectively provided with adjustment components for adjusting the position of each positioning support rod.

[0011] Optionally, the adjustment assembly includes a mounting sleeve and an adjusting screw. The mounting sleeve is fixedly installed on both the bottom bracket and the top bracket. The mounting sleeve corresponds one-to-one with the positioning support rod, and the positioning support rod slides through the corresponding mounting sleeve. The adjusting screw is rotatably installed in each mounting sleeve, and the adjusting screw is threadedly engaged with the corresponding positioning support rod.

[0012] Optionally, the feeding mechanism includes a lead screw rotatably mounted on the machine base and a servo motor fixedly mounted on the machine base for driving the lead screw to rotate. The lead screw is threadedly connected to the tailstock, and a threaded sleeve is provided on the bottom support. The threaded sleeve is sleeved on the lead screw and is threadedly engaged with the lead screw.

[0013] Optionally, a connecting block is fixedly installed on the bottom bracket, and an installation hole is opened on the connecting block. The threaded sleeve passes through the installation hole and is rotatably connected to the connecting block. A limiting component for preventing the threaded sleeve from rotating is provided on the connecting block.

[0014] Optionally, the limiting component includes a limiting block and a limiting member. The side wall of the mounting hole is provided with a receiving groove. The limiting block is slidably disposed in the receiving groove. The limiting member is used to prevent the limiting block from sliding. The side wall of the threaded sleeve is provided with a slot for the limiting block to be inserted.

[0015] Optionally, the limiting component includes a limiting screw, which passes through the connecting block and is threadedly engaged with the connecting block. The limiting screw extends into the receiving groove. A sliding groove is formed on the end face of the limiting block away from the threaded sleeve. A pressure rod slides through the sliding groove. An anti-detachment block is fixedly provided on the side wall of the pressure rod. An anti-detachment groove is formed on the side wall of the sliding groove for the anti-detachment block to slide. The limiting screw is rotatably connected to the pressure rod. A buffer spring is provided in the receiving groove to give the limiting block a sliding tendency to slide towards the threaded sleeve.

[0016] Optionally, the limiting block is provided with a guide wheel at the end near the threaded sleeve, and the guide wheel is used to roll into contact with the surface of the threaded sleeve.

[0017] In summary, this application includes at least one of the following beneficial technical effects:

[0018] 1. This application utilizes a sliding auxiliary support on the machine base. During machining on a horizontal CNC lathe, the workpiece is mounted on the workpiece clamping fixture on the turntable and passes through the positioning cavity of the auxiliary support. The feed mechanism on the machine base drives the tailstock and auxiliary support to slide, bringing the workpiece into contact with the cutting tool on the tool holder. This allows the desired groove or hole to be cut on the end face of the workpiece. During the cutting process, multiple positioning elements within the positioning cavity limit the radial offset of the workpiece, preventing it from wobbling during rotation. This improves the stability of the workpiece during machining, enabling the cutting tool to perform more precise turning operations and ensuring machining accuracy and quality.

[0019] 2. The positioning component adopts a positioning support rod with rollers at the end for rolling connection with the workpiece surface. This reduces frictional damage to the workpiece surface, lowers the surface roughness, and improves the processing quality while limiting the radial displacement of the workpiece.

[0020] 3. This application allows for flexible adjustment of the position of the positioning support rod by sliding it and cooperating with the adjustment component, so as to meet the positioning requirements of workpieces of different sizes.

[0021] 4. This application sets a connecting block on the bottom support to rotatably connect the threaded sleeve to the connecting block, and sets a limiting component to limit the rotation of the threaded sleeve. When the limiting component removes the limiting on the connecting block and the threaded sleeve, the rotation of the lead screw will only drive the tailstock to move, thereby adjusting the distance between the tailstock and the auxiliary support to adapt to the processing needs of workpieces of different lengths and further improve practicality.

[0022] 5. This application incorporates a buffer spring within the receiving groove. During tightening of the limiting screw, if the locating block and the slot on the threaded sleeve are not accurately aligned, continued tightening of the limiting screw compresses the buffer spring. Under the spring's elastic force, the limiting block presses against the side wall of the threaded sleeve and maintains a tendency to slide closer to the threaded sleeve. As the threaded sleeve and connecting block rotate relative to each other, when the locating block and the slot on the threaded sleeve are accurately aligned, the limiting block automatically inserts into the slot under the spring force of the buffer spring, thus limiting the rotation of the threaded sleeve and improving operational convenience. Furthermore, during the process of inserting into the slot to limit the threaded sleeve, the limiting block maintains a tendency to slide closer to the threaded sleeve, preventing it from disengaging from the slot due to processing vibrations and improving the reliability of the equipment. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application;

[0024] Figure 2 This is a structural cross-sectional view of an embodiment of this application;

[0025] Figure 3 This is a schematic diagram illustrating the structure of the auxiliary support in an embodiment of this application;

[0026] Figure 4 This is a schematic diagram illustrating the structure of the connecting block in an embodiment of this application.

[0027] Explanation of reference numerals in the attached drawings: 1. Machine base; 11. Guide rail; 2. Tool holder; 21. Lathe tool; 3. Tailstock; 31. Turntable; 32. Motor; 33. Workpiece clamping fixture; 4. Auxiliary support; 41. Positioning cavity; 42. Positioning component; 421. Positioning support rod; 422. Roller; 423. Mounting sleeve; 424. Adjusting screw; 43. Bottom support; 44. Top support; 45. Fixing component; 46. Threaded sleeve; 461. Slot; 47. Connecting block; 471. Mounting hole; 472. Limiting block; 473. Receiving groove; 474. Limiting screw; 475. Slide groove; 476. Pressure rod; 477. Buffer spring; 478. Guide wheel; 5. Feed mechanism; 51. Lead screw; 52. Servo motor. Detailed Implementation

[0028] The following will be combined with the appendix Figure 1 -Appendix Figure 4 The technical solutions in the embodiments of the present invention are clearly and completely described herein. The described embodiments are only possible technical implementations of the present invention and not all possible implementations. Those skilled in the art can obtain other embodiments in conjunction with the embodiments of the present invention without creative effort, and these embodiments are also within the protection scope of the present invention.

[0029] The inventors of this application have discovered that, when machining some long shaft-type parts, existing horizontal CNC lathes are prone to radial displacement of the workpiece during the machining process, affecting the machining accuracy of multiple workpieces. Therefore, this application discloses a horizontal CNC lathe, mainly employing the following solution:

[0030] This application discloses a horizontal CNC lathe. (Refer to...) Figure 1 and Figure 2 The machine tool assembly includes a base 1, a tool holder 2, a tailstock 3, an auxiliary support 4, and a feed mechanism 5. The tool holder 2 is fixedly mounted on the base 1 and houses a cutting tool 21. The tailstock 3 and auxiliary support 4 are slidably mounted on the base 1. The feed mechanism 5 drives the tailstock 3 and auxiliary support 4 to slide. A turntable 31 is rotatably mounted on the tailstock 3, and a motor 32 drives the turntable 31 to rotate. A workpiece clamping fixture 33 is mounted on the turntable 31. The auxiliary support 4 has a positioning cavity 41 for the workpiece to pass through, containing multiple positioning elements 42 to limit radial displacement of the workpiece. This arrangement allows the tailstock 3 and auxiliary support 4 to flexibly move according to machining requirements during workpiece processing. The motor 32 drives the turntable 31 to rotate, causing the workpiece mounted on the workpiece clamping fixture 33 to rotate accordingly. Combined with the movement of the tailstock 3, the cutting tool 21 on the tool holder 2 can perform cutting operations on the rotating workpiece. Furthermore, during the machining process, the positioning element 42 can effectively limit the radial offset of the workpiece, prevent the workpiece from shaking during rotation, improve the stability of the workpiece during machining, and enable the turning tool 21 to perform turning machining on the workpiece more accurately, thus ensuring machining accuracy and quality.

[0031] Reference Figure 2 Specifically, the base 1 is provided with a guide rail 11, the length direction of the guide rail 11 is parallel to the axis of the turntable 31, and the tailstock 3 and the auxiliary support 4 are slidably mounted on the guide rail 11 to position the sliding of the tailstock 3 and the auxiliary support 4.

[0032] Reference Figure 2 and Figure 3Specifically, the auxiliary support 4 includes a bottom support 43 and a top support 44. The bottom support 43 is slidably mounted on the guide rail 11 of the machine base 1, and the top support 44 is rotatably mounted above the bottom support 43. When the bottom support 43 and the top support 44 are engaged, they together form a positioning cavity 41. The auxiliary support 4 is provided with a fixing element 45 for fixing the top support 44. The bottom support 43 is usually made of metal and has good strength and stability. The top support 44 is connected to the bottom support 43 by a hinge or other rotating structure, which facilitates the opening and closing of the top support 44 for the installation and disassembly of the workpiece. The fixing element 45 can be a bolt, a clip, etc., which fixes the top support 44 to the bottom support 43, ensuring the stability of the positioning cavity 41.

[0033] Reference Figure 2 Both the bottom support 43 and the top support 44 are equipped with positioning elements 42, with a total of no fewer than three positioning elements 42. Specifically, each positioning element 42 includes a positioning rod 421, which is mounted on the top support 44 or the bottom support 43. Each positioning rod 421 has a roller 422 rotatably mounted at its end, which is used for rolling contact with the workpiece surface. The positioning rod 421 is generally made of high-strength steel to ensure it can withstand certain pressure. The surface of the roller 422 is usually polished to reduce friction with the workpiece surface. When limiting radial displacement of the workpiece, the rolling contact between the roller 422 and the workpiece surface reduces frictional damage to the workpiece surface, lowers surface roughness, and improves processing quality.

[0034] Reference Figure 2 Furthermore, the positioning support rod 421 is slidably mounted on the bottom bracket 43 or the top bracket 44. The bottom bracket 43 and the top bracket 44 are respectively equipped with adjusting components for adjusting the position of each positioning support rod 421. Specifically, the adjusting components include mounting sleeves 423 and adjusting screws 424. Mounting sleeves 423 are fixedly mounted on both the bottom bracket 43 and the top bracket 44, each mounting sleeve corresponding to a positioning support rod 421. The positioning support rod 421 slides through the corresponding mounting sleeve 423, and each mounting sleeve 423 is rotatably fitted with an adjusting screw 424, which is threaded into the corresponding positioning support rod 421. The mounting sleeve 423 is generally made of metal with a smooth inner wall to ensure that the positioning support rod 421 can slide smoothly within the mounting sleeve 423. By rotating the adjusting screw 424, the positioning support rod 421 can slide within the mounting sleeve 423, thereby adjusting the position of the positioning support rod 421 to meet the positioning requirements of workpieces of different sizes. Furthermore, the adjusting assembly can also employ power components such as electric push rods to achieve automatic adjustment of the position of the positioning support rod 421 through electric control, improving the accuracy and efficiency of the adjustment.

[0035] Reference Figure 1 and Figure 3 The feed mechanism 5 includes a lead screw 51 rotatably mounted on the base 1 and a servo motor 52 fixedly mounted on the base 1 to drive the lead screw 51 to rotate. The lead screw 51 passes through the tailstock 3 and is threadedly connected to the tailstock 3. A threaded sleeve 46 is provided on the bottom support 43, and the threaded sleeve 46 is fitted onto the lead screw 51 and threadedly engaged with the lead screw 51. The lead screw 51 is usually a high-precision ball screw 51, which has high transmission efficiency and accuracy. The servo motor 52 can precisely control the rotation speed and direction of the lead screw 51, thereby realizing the precise movement of the tailstock 3 and the bottom support 43.

[0036] Reference Figure 3 and Figure 4 Specifically, a connecting block 47 is fixedly mounted on the bottom bracket 43. The connecting block 47 has a mounting hole 471. A threaded sleeve 46 passes through the mounting hole 471 and is rotatably connected to the connecting block 47. The connecting block 47 is equipped with a limiting component to prevent the threaded sleeve 46 from rotating. The connecting block 47 is generally fixed to the bottom bracket 43 by welding or bolting to ensure the stability of the connection. The threaded sleeve 46 and the connecting block 47 are connected by a bearing to ensure that the threaded sleeve 46 can rotate freely within the mounting hole 471, while limiting the axial displacement of the threaded sleeve 46 within the mounting hole 471. The limiting component can control the rotation of the threaded sleeve 46 according to the processing requirements. By removing the restriction on the rotation of the threaded sleeve 46 through the limiting component, the rotation of the lead screw 51 only drives the tailstock 3 to move, so that the distance between the tailstock 3 and the auxiliary support 4 can be adjusted to meet the processing needs of workpieces of different lengths. When the tailstock 3 and the auxiliary support 4 need to move synchronously, the limiting component prevents the threaded sleeve 46 from rotating, so that the rotation of the lead screw 51 simultaneously drives the tailstock 3 and the bottom support 43 to move synchronously.

[0037] Reference Figure 4 The limiting assembly includes a limiting block 472 and a limiting member. A receiving groove 473 is formed on the side wall of the mounting hole 471. The limiting block 472 is slidably disposed within the receiving groove 473. The limiting member is used to prevent the limiting block 472 from sliding. A slot 461 is formed on the side wall of the threaded sleeve 46 for the insertion of the limiting block 472. The size of the receiving groove 473 is adapted to the limiting block 472, ensuring that the limiting block 472 can slide smoothly within the receiving groove 473. The position and size of the slot 461 correspond to the limiting block 472. When the limiting block 472 is inserted into the slot 461, it effectively prevents the threaded sleeve 46 from rotating.

[0038] Reference Figure 4The limiting component includes a limiting screw 474, which passes through and threadedly engages with the connecting block 47. The limiting screw 474 extends into a receiving groove 473. A sliding groove 475 is formed on the end face of the limiting block 472 away from the threaded sleeve 46. A pressure rod 476 slides through the sliding groove 475. An anti-detachment block is fixedly provided on the side wall of the pressure rod 476. An anti-detachment groove is formed on the side wall of the sliding groove 475 for the anti-detachment block to slide. The limiting screw 474 and the pressure rod 476 are rotatably connected. A buffer spring 477 is provided in the receiving groove 473, which is sleeved on the limiting screw 474 and provides a sliding tendency for the limiting block 472 to slide closer to the threaded sleeve 46. A handle is provided at the end of the limiting screw 474 for easy rotation by the operator. The pressure rod 476 and the limiting block 472 are connected by an anti-detachment block and an anti-detachment groove to ensure that the pressure rod 476 will not detach from the limiting block 472 when sliding in the slide groove 475. One end of the buffer spring 477 abuts against the bottom of the receiving groove 473, and the other end abuts against the limiting block 472. When the limiting screw 474 is tightened, if the limiting block 472 is not accurately aligned with the slot 461 on the threaded sleeve 46, the limiting screw 474 is tightened further to compress the buffer spring 477. Under the elastic force of the buffer spring 477, the limiting block 472 presses against the side wall of the threaded sleeve 46 and always has a tendency to slide closer to the threaded sleeve 46. As the threaded sleeve 46 rotates relative to the connecting block 47, when the limiting block 472 is accurately aligned with the slot 461 on the threaded sleeve 46, the limiting block 472 automatically inserts into the slot 461 of the threaded sleeve 46 under the elastic force of the buffer spring 477, thereby limiting the rotation of the threaded sleeve 46 and improving the convenience of operation.

[0039] Furthermore, during the process of limiting the threaded sleeve 46 by inserting into the slot 461, the limiting block 472 always tends to slide closer to the threaded sleeve 46. This prevents the limiting block 472 from disengaging from the slot 461 of the threaded sleeve 46 due to processing vibrations, thus improving the reliability of the equipment. The limiting component can also be made using a hydraulic cylinder or similar method, controlling the sliding of the limiting block 472 by the pressure of hydraulic oil for more precise control.

[0040] In addition, the limiting component can also be an electrically controlled electromagnet, etc.; the electrically controlled electromagnet controls the sliding of the limiting block 472 through electromagnetic force to achieve automated control.

[0041] Reference Figure 4Furthermore, a guide wheel 478 is provided at the end of the limiting block 472 near the threaded sleeve 46. The guide wheel 478 is mounted on the end of the limiting block 472 via a shaft, allowing it to rotate freely at the end of the limiting block 472. The surface of the guide wheel 478 is typically polished to reduce friction with the surface of the threaded sleeve 46. During the movement of the limiting block 472 toward the threaded sleeve 46, the guide wheel 478 rolls against the surface of the threaded sleeve 46, reducing friction between them and making it easier for the limiting block 472 to insert into the slot 461, while also reducing damage to the surface of the threaded sleeve 46. The guide wheel 478 can also be replaced with a rolling component such as a ball bearing to further reduce friction.

[0042] The implementation principle of a horizontal CNC lathe according to an embodiment of this application is as follows: By setting a sliding auxiliary support 4 on the machine base 1, during the machining process of the horizontal CNC lathe, the workpiece is mounted on the workpiece clamping fixture 33 of the turntable 31 and passes through the positioning cavity 41 of the auxiliary support 4. The feed mechanism 5 on the machine base 1 drives the tailstock 3 and the auxiliary support 4 to slide, so that the workpiece contacts the cutting tool 21 on the tool holder 2, thereby cutting the expected groove or hole on the end face of the workpiece. During the cutting process, the radial offset of the workpiece is limited by multiple positioning elements 42 in the positioning cavity 41, preventing the workpiece from shaking during rotation, improving the stability of the workpiece during machining, and enabling the cutting tool 21 to perform more precise turning of the workpiece, ensuring machining accuracy and quality. Simultaneously, by adjusting the components and limiting the components, the horizontal CNC lathe can adapt to the machining needs of workpieces of different sizes and lengths, improving the versatility and practicality of the equipment. Compared with existing technologies, the horizontal CNC lathe in this embodiment has significantly improved in terms of machining accuracy, versatility and practicality, providing stronger support for the development of the manufacturing industry.

[0043] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A horizontal CNC lathe, comprising a machine base (1), a tool holder (2) fixedly mounted on the machine base (1), and a tailstock (3) slidably mounted on the machine frame, wherein a cutting tool (21) is mounted on the tool holder (2), a turntable (31) is rotatably mounted on the tailstock (3), a motor (32) for driving the turntable (31) to rotate is mounted on the tailstock (3), and a workpiece clamping fixture (33) is mounted on the turntable (31), characterized in that: An auxiliary support (4) is also slidably arranged on the base (1), a feeding mechanism (5) is arranged on the base (1) and used for driving the tailstock (3) and the auxiliary support (4) to slide, a positioning cavity (41) for the workpiece to pass through is arranged on the auxiliary support (4), and a plurality of positioning members (42) for limiting the radial deviation of the workpiece are arranged in the positioning cavity (41); The auxiliary support (4) comprises a bottom support (43) which is slidably arranged on the base (1) and a top support (44) which is rotatably arranged on the bottom support (43), the feeding mechanism (5) is used for driving the bottom support (43) to slide, a fixing member (45) for fixing the top support (44) is arranged on the auxiliary support (4), the bottom support (43) and the top support (44) jointly form the positioning cavity (41), and the bottom support (43) and the top support (44) are both provided with the positioning members (42). The feeding mechanism (5) comprises a lead screw (51) which is rotatably arranged on the base (1) and a servo motor (52) which is fixedly arranged on the base (1) and used for driving the lead screw (51) to rotate, the lead screw (51) is in threaded connection with the tailstock (3), and a threaded sleeve (46) is arranged on the bottom support (43) and sleeved on the lead screw (51) and in threaded connection with the lead screw (51). The bottom support (43) is fixedly provided with a connecting block (47), the connecting block (47) is provided with a mounting hole (471), the threaded sleeve (46) penetrates through the mounting hole (471) and is rotatably connected with the connecting block (47), and the connecting block (47) is provided with a limiting assembly for preventing the threaded sleeve (46) from rotating. The limiting assembly comprises a limiting block (472) and a limiting member, a receiving groove (473) is arranged in the side wall of the mounting hole (471), the limiting block (472) is slidably arranged in the receiving groove (473), the limiting member is used for preventing the limiting block (472) from sliding, and a clamping groove (461) for the limiting block (472) to insert is arranged in the side wall of the threaded sleeve (46).

2. The horizontal CNC lathe according to claim 1, characterized in that: The positioning member (42) comprises a positioning support rod (421), the positioning support rod (421) is mounted on the top support (44) or the bottom support (43), and an end portion of each positioning support rod (421) is rotatably provided with a roller (422), and the roller (422) is used for being in rolling connection with the surface of the workpiece.

3. The horizontal CNC lathe according to claim 2, characterized in that: The positioning support rod (421) is slidably arranged on the bottom support (43) or the top support (44), and the bottom support (43) and the top support (44) are respectively provided with an adjusting assembly for adjusting the position of each positioning support rod (421).

4. The horizontal CNC lathe according to claim 3, characterized in that: The adjusting assembly comprises mounting sleeves (423) and adjusting screws (424), the mounting sleeves (423) are fixedly arranged on the bottom support (43) and the top support (44) and correspond to the positioning support rods (421), the positioning support rods (421) slide through the corresponding mounting sleeves (423), the adjusting screws (424) rotate through the corresponding mounting sleeves (423), and the adjusting screws (424) are in threaded connection with the corresponding positioning support rods (421).

5. The horizontal CNC lathe according to claim 1, characterized in that: The limiting member comprises a limiting screw (474), the limiting screw (474) is arranged on the connecting block (47) and is in threaded connection with the connecting block (47), the limiting screw (474) extends into the accommodating groove (473), the end face of the limiting block (472) away from the threaded sleeve (46) is provided with a sliding groove (475), the sliding groove (475) is slidably provided with a pressing rod (476), the side wall of the pressing rod (476) is fixedly provided with an anti-falling block, the side wall of the sliding groove (475) is provided with an anti-falling groove for the anti-falling block to slide, the limiting screw (474) is in rotary connection with the pressing rod (476), and the accommodating groove (473) is provided with a buffer spring (477) for enabling the limiting block (472) to have a sliding trend of sliding towards the threaded sleeve (46).

6. A horizontal CNC lathe according to claim 5, characterized in that: The end of the limiting block (472) close to the threaded sleeve (46) is provided with a guide wheel (478), and the guide wheel (478) is used for being in rolling connection with the surface of the threaded sleeve (46).

Images