Cutting supporting device and lathe

Abstract

The utility model discloses a cutting support device and lathe, cutting support device includes underframe, lifting subassembly, driven frame, at least one spacing adjustment subassembly and roller, driven frame is fixed setting up in the lifting end of lifting subassembly, each spacing adjustment subassembly has two moving end, roller is rotatingly installed at the moving end of spacing adjustment subassembly, each spacing adjusting assembly drives the rollers located at the two moving ends to move close to each other or away from each other. The two idler wheels are driven by the distance adjusting assembly to move close to or away from each other, workpieces with different diameters can be rapidly adapted, the tedious operation of manually adjusting or replacing the supporting device is avoided, and the machining efficiency is improved; the roller rotates along with the workpiece to provide dynamic support after being contacted with the workpiece, the lifting assembly is combined to adjust the height of the driven frame, radial deflection deformation of the workpiece caused by dead weight and centrifugal force is effectively restrained, and machining precision is improved.

Description

Technical Field

[0001] This utility model relates to the field of tubular workpiece support technology, and in particular to a cutting support device and a lathe. Background Technology

[0002] When machining tubular workpieces on a lathe, especially long tubes, it is usually necessary to clamp the workpiece with the spindle and tailstock and rotate it for external diameter or end face cutting. However, when the workpiece's length-to-diameter ratio exceeds a certain range, radial deflection deformation easily occurs during rotation due to its own weight and centrifugal force, causing a shift in the relative position of the cutting tool and the workpiece, severely affecting machining accuracy and surface quality. Existing technologies commonly use auxiliary support devices to support the middle of the workpiece, such as fixed V-shaped support blocks or rigid roller sets. While these devices provide radial constraint, their support surface shape and spacing are usually designed for specific tube diameters. When the workpiece diameter changes, the support mechanism needs manual adjustment or the entire device needs to be replaced. Therefore, we provide a cutting support device and lathe to solve the above problems. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a cutting support device and a lathe.

[0004] The objective of this utility model is achieved through the following technical solution:

[0005] A cutting support device, comprising:

[0006] Base frame, the base frame having a mounting cavity;

[0007] A lifting assembly, which is installed in the mounting cavity;

[0008] The driven frame is fixedly installed at the lifting end of the lifting assembly;

[0009] At least one spacing adjustment component is arranged side-by-side at intervals on the driven frame, and each of the spacing adjustment components has two moving ends;

[0010] Rollers are rotatably mounted on the moving ends of the spacing adjustment components, and each spacing adjustment component drives the rollers located on its two moving ends to move closer to or further apart from each other.

[0011] Preferably, the base frame includes a frame, the mounting cavity is defined by the frame, a first support plate is fixedly mounted on the upper surface of one side of the frame, and a second support plate is fixedly mounted on the upper surface of the frame on the side away from the first support plate.

[0012] Preferably, the driven frame includes a driven plate, and side plates are fixedly installed on both sides of the driven plate.

[0013] Preferably, the spacing adjustment assembly includes a third guide rod fixedly installed between the two side plates. Two spaced linear bearings are slidably installed on the third guide rod. A mounting plate is fixedly installed on each linear bearing. A roller is rotatably installed on the top of the mounting plate. A spring is sleeved on the third guide rod between the two linear bearings, and the two ends of the spring abut against the linear bearings respectively. An adjustment rod is threadedly connected to the side plate and abuts against the mounting plate. A guide groove is formed on the driven plate, and the mounting plate is slidably connected to the guide groove.

[0014] Preferably, a wing nut is fixedly provided on the adjusting rod.

[0015] Preferably, the lifting assembly includes a first guide rod and a lead screw disposed in the mounting cavity along a first direction, the first guide rod being parallel to the axis of the lead screw, a slider being slidably mounted on the first guide rod, and the lead screw being drively connected to the slider;

[0016] The lifting assembly also includes a moving rod and a fixed rod arranged intersecting each other, the moving rod and the fixed rod being rotatably connected to each other, one end of the moving rod being rotatably connected to the slider, and the end of the moving rod away from the slider being provided with a connecting block fixedly connected to the driven frame; a connecting plate is fixedly connected between one end of the two fixed rods, and the end of the fixed rod away from the connecting plate is rotatably mounted on the inner wall of the mounting cavity along a second direction, and a second guide rod is slidably mounted on the connecting plate, both ends of the second guide rod being fixedly connected to the driven frame.

[0017] Preferably, a handwheel is fixedly provided at the end of the lead screw.

[0018] This application also provides a lathe, the lathe comprising:

[0019] The cutting support device described in any of the above items;

[0020] The bed frame, the base frame of the cutting support device is mounted on the bed frame, and the frame of the bed frame is provided with a first support rod and a second support rod, which are used to support the base frame.

[0021] Preferably, the bed has a receiving groove, the receiving groove has a first surface and a second surface, the first surface forms an inclined surface with the upper surface of the bed, the second surface is perpendicular to the upper surface of the bed, the first support rod is disposed at the inclined surface to support one side end of the base frame, the second support rod is disposed on the upper surface of the bed away from the first support rod, and the second support rod supports the side end of the base frame away from the first support rod.

[0022] This utility model has the following advantages:

[0023] 1. This utility model uses a spacing adjustment component to drive two rollers to move closer or further apart, which can quickly adapt to workpieces of different diameters, avoiding the tedious operation of manually adjusting or replacing the support device and improving processing efficiency. After the rollers come into contact with the workpiece, they rotate with the workpiece to provide dynamic support. Combined with the lifting component to adjust the height of the driven frame, it effectively suppresses the radial deflection deformation of the workpiece caused by its own weight and centrifugal force, and improves processing accuracy. Multiple spacing adjustment components can be adjusted independently to adapt to the support requirements of different diameter parts on the same workpiece, and are especially suitable for processing stepped shaft workpieces.

[0024] 2. This utility model uses the adjusting rod to drive the mounting plate to slide on the third guide rod and compress the spring, so that the two linear bearings drive the rollers to move precisely along the guide groove, ensuring the smoothness and synchronicity of the roller spacing adjustment; the sliding cooperation between the guide groove and the mounting plate can prevent the rollers from deviating during the adjustment process and improve the support stability; the spring provides a reverse elastic force to maintain the contact preload between the rollers and the workpiece, and the wing nut facilitates manual and quick adjustment, reduces tool dependence, and improves adjustment efficiency. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of the support device of this utility model.

[0026] Figure 2 This is a schematic diagram of the explosive state structure of the cutting support device of this utility model.

[0027] Figure 3 This is a first-view structural diagram of the spacing adjustment component of this utility model.

[0028] Figure 4 This is a schematic diagram of the second perspective structure of the spacing adjustment component of this utility model.

[0029] Figure 5 This is a schematic diagram of the lifting component structure of this utility model.

[0030] Figure 6 This is a schematic diagram of the structure of the support device of this utility model in the state of supporting the workpiece.

[0031] Figure 7 This is a side view of the support device of this utility model supporting the workpiece.

[0032] Figure 8 This is a schematic diagram showing the workpiece support state under the assembled condition of the lathe and the support device.

[0033] In the diagram, 100 is the base frame; 101 is the mounting cavity; 110 is the frame; 120 is the first support plate; 130 is the second support plate; 200 is the lifting assembly; 210 is the first guide rod; 220 is the slider; 230 is the lead screw; 240 is the moving rod; 250 is the fixed rod; 260 is the second guide rod; 270 is the connecting block; 280 is the connecting plate; 290 is the handwheel; 300 is the driven frame; 310 is the driven plate; and 320 is the driven plate. Side plate; 400, Spacing adjustment assembly; 410, Third guide rod; 420, Linear bearing; 430, Mounting plate; 440, Spring; 450, Adjusting rod; 460, Guide groove; 470, Wing nut; 500, Roller; 600, Bed; 601, Receiving groove; 6011, First surface; 6012, Second surface; 610, Inclined surface; 710, First support rod; 720, Second support rod; a, Workpiece. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can typically be arranged and designed in various different configurations.

[0035] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0036] like Figure 1 — Figure 7 The example shown.

[0037] This application provides a cutting support device, which includes a base frame 100, a lifting assembly 200, a driven frame 300, at least one spacing adjustment assembly 400, and rollers 500.

[0038] In some embodiments, the base frame 100 has a mounting cavity 101, the lifting assembly 200 is mounted in the mounting cavity 101, the spacing adjustment assemblies 400 are arranged side by side at intervals on the driven frame 300, each of the spacing adjustment assemblies 400 has two moving ends, and the rollers 500 are rotatably mounted on the moving ends of the spacing adjustment assemblies 400, and each of the spacing adjustment assemblies 400 drives the rollers 500 located on its two moving ends to move closer to or further apart from each other.

[0039] See Figure 6 and Figure 7 As shown, in this application, the workpiece is a tubular or shaft-shaped product, and when the support device supports the workpiece, the roller 500 contacts the outer peripheral surface of the workpiece to achieve support for the workpiece.

[0040] For details, please refer to Figure 1 , Figure 2 , Figure 6 as well as Figure 7 In order to support the workpiece to a certain height, the driven frame 300 can be lifted by the lifting component 200, thereby raising the roller 500 to a certain height. Next, the spacing adjustment component 400 adjusts the spacing between the two rollers 500 located at its position. It can be understood that, since the outer surface of the workpiece is arc-shaped, the two rollers 500 will gradually come into contact with the outer surface of the workpiece when they move closer to each other. As the two rollers 500 continue to move closer to each other, they will support the workpiece. Similarly, when the spacing adjustment component 400 drives the two rollers 500 to move away from each other, the rollers 500 will gradually move away from the workpiece, releasing the state of contact support on the workpiece surface.

[0041] Furthermore, the two rollers 500 can move closer to each other or further apart to accommodate workpieces of different diameters. When the workpiece diameter is small, the two rollers 500 move closer to each other and contact the workpiece surface. Similarly, when the workpiece diameter is large, the two rollers 500 can move further apart and contact the workpiece surface to adapt to the curvature of the workpiece's outer surface. This allows the axes of the two rollers 500 and the axis of the workpiece to form a stable triangular structure when viewed from the axial direction, providing stable support for the workpiece.

[0042] In this embodiment, multiple spacing adjustment components 400 are arranged side by side on the driven frame 300 along the axial direction of the workpiece, and each spacing adjustment component 400 has a roller 500 rotatably mounted on its moving end. This allows for the support of workpieces of different lengths. Furthermore, since the spacing between the two rollers 500 at each spacing adjustment component 400 position can be adjusted independently, this support can also support workpieces with different diameters on the same axis, such as stepped shaft-shaped workpieces. Specifically, the spacing between the two rollers 500 at different positions of the spacing adjustment component 400 can be adjusted to support workpieces of different diameters.

[0043] It is understandable that since the roller 500 can rotate relative to the spacing adjustment component 400, it will not affect the processing of the workpiece while supporting it; that is, the roller 500 will rotate with the workpiece.

[0044] In some specific embodiments, the driven frame 300 includes a driven plate 310, and side plates 320 are fixedly installed on both sides of the driven plate 310.

[0045] In some specific embodiments, the base frame 100 includes a frame 110, the mounting cavity 101 is defined by the frame 110, a first support plate 120 is fixedly mounted on the upper surface of one side of the frame 110, and a second support plate 130 is fixedly mounted on the upper surface of the frame 110 on the side away from the first support plate 120.

[0046] See Figure 2 as well as Figure 7 As shown, in this embodiment, the frame 110 is rectangular, that is, the frame 110 is formed by the cooperation of four side plates. In order to realize the placement and installation of the frame 110, a first support plate 120 and a second support plate 130 are respectively installed on both sides of the frame 110. The second support plate 130 is installed and placed with the lathe bed 600.

[0047] In some specific embodiments, the spacing adjustment assembly 400 includes a third guide rod 410 fixedly installed between the two side plates 320. Two spaced linear bearings 420 are slidably installed on the third guide rod 410. A mounting plate 430 is fixedly installed on each linear bearing 420. A roller 500 is rotatably installed on the top of the mounting plate 430. A spring 440 is sleeved on the third guide rod 410 between the two linear bearings 420, and the two ends of the spring 440 abut against the linear bearings 420 respectively. An adjusting rod 450 is threadedly connected to the side plate 320, and the adjusting rod 450 abuts against the mounting plate 430. A guide groove 460 is formed on the driven plate 310, and the mounting plate 430 is slidably connected to the guide groove 460.

[0048] See Figure 3 and Figure 4 As shown, the adjusting rod 450 is threaded onto the side plate 320, that is, the side plate 320 has a threaded hole adapted to the adjusting rod 450. The adjusting rod 450 is screwed into the threaded hole and extends towards the mounting plate 430 until the adjusting rod 450 abuts against the mounting plate 430. With the adjusting rods 450 on both sides simultaneously limiting the two mounting plates 430, the distance between the two mounting plates 430 is limited. It can be understood that if the adjusting rod 450 moves away from the mounting plate 430, the spring force of the spring 440 will cause the two linear bearings 420 to move away from each other, further driving the two mounting plates 430 to move away from each other, thereby changing the distance between the two rollers 500.

[0049] Understandably, when it is necessary to move the two rollers 500 closer to each other, the adjusting rods 450 at both ends can be turned and moved towards the mounting plate 430 to overcome the elastic force of the spring 440 and move the two linear bearings 420 closer to each other. This, in turn, causes the two mounting plates 430 to move the rollers 500 located on them closer to each other, thereby reducing the distance between the two rollers 500.

[0050] To prevent the mounting plate 430 from shifting during movement, a guide groove 460 is provided on the driven plate 310. The mounting plate 430 slides in the guide groove 460 under force. With the guide groove 460 limiting the mounting plate 430, the mounting plate 430 is prevented from shifting during movement, so that the mounting plate 430 can move smoothly.

[0051] In one embodiment, to facilitate the screwing of the adjusting rod 450, an internal hexagonal groove is provided on the end face of the adjusting rod 450, and the adjusting rod 450 is rotated by a hexagonal wrench. In practice, other methods can also be used to screw the adjusting rod 450, and no specific method is limited here.

[0052] Please see Figure 3 and Figure 4 As shown, in order to facilitate the rotation of the adjusting rod 450, a wing nut 470 is fixedly installed on the adjusting rod 450. That is, the wing nut 470 is fixedly installed on the adjusting rod 450, and the wing nut 470 can be rotated directly by hand, thereby causing the adjusting rod 450 to rotate as well. The adjusting rod 450 can be rotated without the aid of tools. It can be understood that the adjusting rod 450 and the wing nut 470 can be fixedly connected by welding.

[0053] In some specific embodiments, the lifting assembly 200 includes a first guide rod 210 and a lead screw 230 disposed in the mounting cavity 101 along a first direction. The first guide rod 210 is parallel to the axis of the lead screw 230, and a slider 220 is slidably mounted on the first guide rod 210. The lead screw 230 is pulsatorically connected to the slider 220. The lifting assembly 200 also includes a moving rod 240 and a fixed rod 250 disposed intersecting each other. The moving rod 240 and the fixed rod 250 are rotatably connected to each other. One end of the moving rod 240 is rotatably connected to the slider 220. The end of the moving rod 240 away from the slider 220 is provided with a connecting block 270 fixedly connected to the driven frame 300. A connecting plate 280 is fixedly connected between one end of the two fixed rods 250. The end of the fixed rod 250 away from the connecting plate 280 is rotatably mounted on the inner wall of the mounting cavity 101 in a second direction. A second guide rod 260 is slidably mounted on the connecting plate 280. Both ends of the second guide rod 260 are fixedly connected to the driven frame 300.

[0054] See Figure 2 and Figure 5 As shown, the fixed blocks at both ends of the second guide rod 260 are fixedly connected to the bottom surface of the driven frame 300. When the driven frame 300 needs to be raised or lowered by the lifting assembly 200, the slider 220 is first moved about the first guide rod 210 by rotating the lead screw 230. During the sliding of the slider 220, the bottom of the moving rod 240 gradually moves towards the bottom of the fixed rod 250. The bottom of the fixed rod 250 is hinged to the inner wall of the mounting cavity 101, so the position of the bottom of the fixed rod 250 remains unchanged. Since the moving rod 240 and the fixed rod 250 are hinged, and the top of the moving rod 240 is connected to the driven frame 300 through the connecting block 270, the position of the bottom of the fixed rod 250 remains unchanged. With the bottom of the fixed rod 250 and the top of the moving rod 240 remaining unchanged, the tilt angle of the moving rod 240 changes as the bottom of the moving rod 240 moves closer to the bottom of the fixed rod 250. During this process, the connecting plate 280 at the top of the fixed rod 250 gradually moves closer to the connecting block 270 at the top of the moving rod 240. As they move closer together, the driven frame 300 is lifted, thereby achieving the lifting and lowering adjustment of the driven frame 300. It can be understood that when it is necessary to lower the height of the driven frame 300, it is only necessary to rotate the lead screw 230 in the opposite direction.

[0055] Please continue reading. Figure 2 and Figure 5 As shown, in this embodiment, there are a total of two lifting systems, both of which are controlled and adjusted by a lead screw 230. The two lifting systems can synchronously drive the lifting component 200 to rise or fall.

[0056] In this embodiment, in order to further understand the working process and principle of the lifting assembly 200, the lifting process of the lifting assembly 200 driving the driven frame 300 to lift can be referred to the existing scissor lift platform.

[0057] Please see Figure 1 , Figure 5 As shown, a handwheel 290 is fixedly provided at the end of the lead screw 230. In order to facilitate the rotation of the lead screw 230, the handwheel 290 at its end drives the lead screw 230 to rotate, thereby improving the convenience of adjustment.

[0058] See Figure 7 , Figure 8 As shown in the figure, this application embodiment also provides a lathe, which includes the cutting support device described in any of the above claims and a bed 600. Specifically, the base frame 100 of the cutting support device is disposed on the bed 600, and a first support rod 710 and a second support rod 720 are disposed on the side frame of the bed 600. The first support rod 710 and the second support rod 720 are used to support the base frame 100.

[0059] In some specific embodiments, the bed body 600 has a receiving groove 601, the receiving groove 601 has a first surface 6011 and a second surface 6012, the first surface 6011 forms an inclined surface 610 with the upper surface of the bed body 600, and the second surface 6012 is perpendicular to the upper surface of the bed body 600. The first support rod 710 is disposed at the position of the inclined surface 610 to support one side end of the base frame 100, and the second support rod 720 is disposed on the upper surface of the bed body 600 away from the first support rod 710, and the second support rod 720 supports the side end of the base frame 100 away from the first support rod 710.

[0060] See Figure 7 As shown, during the workpiece processing, in order to prevent the position between the base frame 100 and the bed 600 from shifting, a first support rod 710 is set on the inclined surface 610. Since the inclined surface 610 is inclined, the base frame 100 will move towards the second surface 6012 under the action of gravity, so that the side of the base frame 100 abuts against the second surface 6012. It can be understood that the heavier the weight of the base frame 100 and the components installed on it, the greater the contact force between the side of the base frame 100 and the second surface 6012, and the less likely the base frame 100 is to move.

[0061] In this embodiment, the first support rod 710 contacts the bottom surface of the first support plate 120 and the second support rod 720 contacts the bottom surface of the second support plate 130 to support the frame 110 and prevent the bottom surface of the frame 110 from contacting the bottom surface of the receiving groove 601.

[0062] See Figure 8 As shown in the figure, in this embodiment, the lathe also includes corresponding chuck, cutter, power unit and other components. The power unit can drive the workpiece held by the chuck to rotate and drive the cutter to move to cut the workpiece. The power unit is existing technology, and the specific structure will not be described in detail here.

[0063] The working process of this utility model is as follows: The lifting assembly 200 installed in the mounting cavity 101 of the base frame 100 drives the driven frame 300 to rise and fall; the handwheel 290 of the lifting assembly 200 rotates the lead screw 230, causing the slider 220 to slide along the first guide rod 210. Through the cross hinge movement of the moving rod 240 and the fixed rod 250, the connecting block 270 and the second guide rod 260 are pushed to move in conjunction, thereby raising or lowering the driven frame 300; the spacing adjustment assembly 400 on the driven frame 300 is turned by the adjusting rod 450 and the wing nut 470, pushing the mounting plate 430 to slide on the third guide rod 410, compressing the spring 440 or releasing the elastic force, so that the two linear bearings 420 drive the rollers 500 to move closer or further away from each other along the guide groove 460 to accommodate workpieces a of different diameters; after the rollers 500 come into contact with the workpiece a, they provide stable support as the workpiece rotates.

[0064] The lathe bed 600 is fixed to the base frame 100 by the first support rod 710 at the inclined surface 610 and the second support rod 720 on the horizontal surface, ensuring that the base frame 100 is stable in the receiving groove 601. Before processing, the rollers 500 of the cutting support device adaptively support different diameter parts of the workpiece through the lifting and spacing adjustment functions to prevent bending deformation and improve processing accuracy.

[0065] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A cutting support device, characterized in that, include: A base frame (100) having a mounting cavity (101). A lifting assembly (200) is installed in the mounting cavity (101); Driven frame (300), the driven frame (300) is fixedly installed at the lifting end of the lifting assembly (200); At least one pitch adjustment component (400) is arranged side-by-side at intervals on the driven frame (300), and each of the pitch adjustment components (400) has two moving ends; Rollers (500) are rotatably mounted on the moving ends of the spacing adjustment components (400), and each of the spacing adjustment components (400) drives the rollers (500) located on its two moving ends to move closer to or further apart from each other.

2. The cutting support device according to claim 1, characterized in that: The base frame (100) includes a frame (110), the mounting cavity (101) is defined by the frame (110), a first support plate (120) is fixedly installed on the upper surface of one side of the frame (110), and a second support plate (130) is fixedly installed on the upper surface of the frame (110) away from the first support plate (120).

3. The cutting support device according to claim 1, characterized in that: The driven frame (300) includes a driven plate (310), and side plates (320) are fixedly installed on both sides of the driven plate (310).

4. A cutting support device according to claim 3, characterized in that: The spacing adjustment assembly (400) includes a third guide rod (410) fixedly installed between the two side plates (320). Two spaced linear bearings (420) are slidably installed on the third guide rod (410). A mounting plate (430) is fixedly installed on each linear bearing (420). A roller (500) is rotatably installed on the top of the mounting plate (430). A spring (440) is sleeved on the third guide rod (410) between the two linear bearings (420), and the two ends of the spring (440) abut against the linear bearings (420). An adjusting rod (450) is threadedly connected to the side plate (320), and the adjusting rod (450) abuts against the mounting plate (430). A guide groove (460) is provided on the driven plate (310), and the mounting plate (430) is slidably connected to the guide groove (460).

5. A cutting support device according to claim 4, characterized in that: A wing nut (470) is fixedly installed on the adjusting rod (450).

6. A cutting support device according to claim 1, characterized in that: The lifting assembly (200) includes a first guide rod (210) and a lead screw (230) arranged in the mounting cavity (101) along a first direction. The first guide rod (210) is parallel to the axis of the lead screw (230). A slider (220) is slidably mounted on the first guide rod (210). The lead screw (230) is connected to the slider (220) in a transmission connection. The lifting assembly (200) further includes a moving rod (240) and a fixed rod (250) arranged intersecting each other. The moving rod (240) and the fixed rod (250) are rotatably connected to each other. One end of the moving rod (240) is rotatably connected to the slider (220). The end of the moving rod (240) away from the slider (220) is provided with a connecting block (270) fixedly connected to the driven frame (300). A connecting plate (280) is fixedly connected between one end of the two fixed rods (250). The end of the fixed rod (250) away from the connecting plate (280) is rotatably mounted on the inner wall of the mounting cavity (101) in a second direction. A second guide rod (260) is slidably mounted on the connecting plate (280). Both ends of the second guide rod (260) are fixedly connected to the driven frame (300).

7. A cutting support device according to claim 6, characterized in that: A handwheel (290) is fixedly provided at the end of the lead screw (230).

8. A lathe, characterized in that: include: The cutting support device according to any one of claims 1 to 7; The bed frame (600) is provided with the base frame (100) of the cutting support device. A first support rod (710) and a second support rod (720) are provided on the side frame of the bed frame (600). The first support rod (710) and the second support rod (720) are used to support the base frame (100).

9. A lathe according to claim 8, characterized in that: The bed body (600) has a receiving groove (601), the receiving groove (601) has a first surface (6011) and a second surface (6012), the first surface (6011) forms an inclined surface (610) with the upper surface of the bed body (600), and the second surface (6012) is perpendicular to the upper surface of the bed body (600). The first support rod (710) is located at the inclined surface (610) and supports one side end of the base frame (100). The second support rod (720) is located on the upper surface of the bed body (600) away from the first support rod (710) and supports the side end of the base frame (100) away from the first support rod (710).

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