A turning cage for lathe

Abstract

The present invention relates to the technical field of mechanical turning, and in particular to a turning retaining frame for a lathe, which comprises a bracket, a fixed frame, a rotating frame and an adjusting assembly. When two mounting rods gradually approach each other, a first clamping wheel first contacts a side wall of an elongated shaft, and at the same time, the rotating frame rotates on the bracket rod. During the rotation of the rotating frame, the second clamping wheel gradually contacts the side wall of the elongated shaft. When the squeezing force of the first clamping wheel and the second clamping wheel on the elongated shaft reaches a balance, the two mounting rods are no longer close to each other, and the first clamping wheel and the second clamping wheel on the two mounting rods clamp a workpiece in a stable state. When the diameter of the workpiece changes, the rotation angle of the rotating frame changes, and the adjusting assembly adjusts the squeezing force of the first clamping wheel and the second clamping wheel on the workpiece to ensure that when the diameter of the elongated shaft changes, the first clamping wheel and the second clamping wheel can complete the clamping of the elongated shaft, thereby ensuring the stability of the elongated shaft.

Description

Technical Field

[0001] The invention relates to the technical field of mechanical turning, in particular to a turning retaining frame for a lathe. Background Art

[0002] Slender shafts are a common type of workpiece in mechanical manufacturing and are widely used in the fields of aviation, automobiles, etc. The processing of slender shafts, especially turning processing, is easily affected by cutting forces due to their slender structure and insufficient rigidity, making it difficult to ensure processing accuracy and surface quality. Usually, the turning process of slender shafts uses one end to be clamped by the lathe spindle and the other end to be supported by a center. The cutting force during the turning process acts on the surface of the workpiece, which will have an adverse effect on the stability of the workpiece; in addition, the center support force should not be too large, otherwise it may cause the slender shaft to become unstable and produce bending deformation, affecting the processing accuracy. Secondly, due to the limited contact area between the center and the workpiece, the support effect of the center is also relatively limited. Especially during high-speed turning, the workpiece is prone to vibration, which not only affects the surface finish of the workpiece, but also may cause the workpiece to shift during the processing, increasing the defective rate. Summary of the invention

[0003] The invention provides a turning retainer for a lathe, so as to solve the problem of high defective rate when machining a slender shaft on an existing lathe.

[0004] A turning cage for a lathe of the present invention adopts the following technical solution:

[0005] A turning retaining frame for a lathe comprises a bracket, a fixing frame, a rotating frame and an adjusting assembly.

[0006] The bracket is connected to the lathe by sliding along the length direction of the workpiece; two mounting rods are arranged on the bracket, and the two mounting rods are arranged at an interval up and down, and a first adjusting member is arranged on the bracket, and the first adjusting member is used to adjust the distance between the two mounting rods; two fixed frames are provided, each of which is arranged on a mounting rod, and each fixed frame is provided with two frame rods with preset angles, and the preset angles formed by the frame rods on the two fixed frames have opposite opening directions; multiple rotating frames are provided, and each rotating frame is rotatably connected to a frame rod; each rotating frame is provided with a first sensing section and a second sensing section parallel to each other; the first sensing section is provided with a first clamping wheel, and the second sensing section is provided with a second clamping wheel; the adjustment component can adjust the extrusion force of the first clamping wheel and the second clamping wheel on the workpiece according to the diameter of the workpiece.

[0007] Furthermore, the adjustment assembly includes a first adjusting rod, a second adjusting rod and a transmission member; the first clamping wheel is slidably connected to the first sensing section through the first mounting frame; the second clamping wheel is slidably connected to the second sensing section through the second mounting frame; the first adjusting rod is threadedly connected to the first sensing section, and a first elastic member is arranged between the first adjusting rod and the first mounting frame; the second adjusting rod is threadedly connected to the second sensing section, and a second elastic member is arranged between the second adjusting rod and the second mounting frame; the transmission member can transmit the rotation of the rotating frame relative to the frame rod to the rotation of the first adjusting rod and the second adjusting rod.

[0008] Furthermore, the transmission member includes a first rack, a second rack and a transmission rod, the transmission rod is rotatably connected to the rotating frame, a gear ring is provided on the frame rod, a gear sleeve is provided at one end of the transmission rod, and the gear sleeve is always engaged with the gear ring; the first rack and the second rack are both slidably connected to the rotating frame, a first tooth groove is provided on the outer wall of the transmission rod, the first rack and the second rack are simultaneously engaged with the first tooth groove on the outer wall of the transmission rod, when the first rack slides on the rotating frame, the first adjustment rod can rotate in the first sensing section, and when the second rack slides on the rotating frame, the second adjustment rod can rotate in the second sensing section.

[0009] Furthermore, the transmission member also includes a first transmission sleeve and a second transmission sleeve, the first transmission sleeve is rotatably connected to the first sensing section, the first transmission sleeve is arranged on the outside of the first adjusting rod, and the first transmission sleeve cooperates with the key groove of the first adjusting rod; the outer wall of the first transmission sleeve is provided with a second tooth groove, and the first transmission sleeve is meshed with the first rack; the second transmission sleeve is rotatably connected to the second sensing section, the second transmission sleeve is arranged on the outside of the second adjusting rod, and the second transmission sleeve cooperates with the key groove of the second adjusting rod; the outer wall of the second transmission sleeve is provided with a third tooth groove, and the second transmission sleeve is meshed with the second rack.

[0010] Furthermore, the adjustment assembly further comprises a limiting unit, which can prevent the rotating frame from rotating on the frame rod when the rotation speed of the workpiece is lower than a first preset value.

[0011] Furthermore, the limit unit includes a sensing module, a limit ring and a second adjusting member, the limit ring is arranged between the rotating frame and the frame rod, the limit ring is slidably connected to the rotating frame, the limit ring can abut against the frame rod, and the contact surface between the limit ring and the frame rod is a rough surface; the sensing module is used to sense the rotational speed of the workpiece, and the second adjusting member is used to increase the positive pressure between the limit ring and the frame rod when the rotational speed of the workpiece is less than a first preset value.

[0012] Furthermore, the induction module includes an induction ring and a plurality of induction blocks. The induction ring is coaxially arranged with the first clamping wheel. The plurality of induction blocks are evenly distributed around the circumference of the induction ring. Each induction block is slidably arranged along the radial direction of the induction ring.

[0013] Furthermore, the second adjustment member includes a first adjustment ring, a second adjustment ring, an adjustment compression spring and an adjustment rod; the first adjustment ring is coaxially arranged with the limiting ring, and the first adjustment ring is slidingly connected with the rotating frame; the adjustment compression spring is arranged between the first adjustment ring and the limiting ring; the second adjustment ring is coaxially slidingly connected with the induction ring, the end face of the second adjustment ring is arranged as a conical surface, the conical surface abuts against multiple induction blocks at the same time, and the adjustment rod is connected between the second adjustment ring and the first adjustment ring.

[0014] Furthermore, two groups of limiting units are provided, wherein one group of limiting units is provided on the first clamping wheel, and the other group of limiting units is provided on the second clamping wheel.

[0015] Furthermore, the first adjusting part includes an adjusting motor and an adjusting screw. The adjusting motor is fixedly arranged on the bracket, and the mounting rod is slidably connected to the bracket up and down; the adjusting screw is rotatably connected to the bracket, and the adjusting screw passes through two mounting rods. A spiral block is arranged on the mounting rod, and the mounting rod is spirally matched with the adjusting screw; the adjusting motor is used to drive the adjusting screw to rotate.

[0016] The beneficial effects of the present invention are as follows: a turning holder for a lathe of the present invention comprises a bracket, a fixing bracket, a rotating bracket and an adjusting assembly. When a lathe is used to turn a pair of slender shafts, one end of the slender shaft is clamped on the lathe, and the tip of the lathe is used to support the other end of the slender shaft. Subsequently, a first adjusting member is used to adjust the distance between the two mounting rods. Initially, the distance between the two mounting rods is much larger than the diameter of the slender shaft. When the two mounting rods gradually approach each other, the first clamping wheel first contacts the side wall of the slender shaft. When the first clamping wheel squeezes the slender shaft, the first clamping wheel moves relative to the first sensing section. At the same time, the rotating bracket rotates on the bracket rod. During the rotation of the frame, the second clamping wheel gradually contacts the side wall of the slender shaft. When the extrusion pressure of the first clamping wheel and the second clamping wheel on the slender shaft reaches a balance, the two mounting rods are no longer close to each other. At this time, the first clamping wheel and the second clamping wheel on the two mounting rods clamp the workpiece in a stable state. When the diameter of the workpiece changes, the time point when the first clamping wheel contacts the slender shaft changes. At the same time, the rotation angle of the rotating frame changes. The adjustment component adjusts the extrusion pressure of the first clamping wheel and the second clamping wheel on the workpiece to ensure that when the diameter of the slender shaft changes, the first clamping wheel and the second clamping wheel can complete the clamping of the slender shaft, thereby ensuring the stability of the slender shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0018] Figure 1 A schematic diagram of the structure of a turning cage for a lathe provided in an embodiment of the present invention when installed on the lathe;

[0019] Figure 2 A schematic structural diagram of a turning cage for a lathe provided in an embodiment of the present invention;

[0020] Figure 3 for Figure 2 A partial enlarged view of the middle A;

[0021] Figure 4 A side view of a lathe turning holder provided by an embodiment of the present invention clamping a slender shaft;

[0022] Figure 5 for Figure 4 Cross-sectional view in the BB direction;

[0023] Figure 6 for Figure 5 A partial enlarged view of point C in the middle;

[0024] Figure 7 A schematic structural diagram of a rotating frame, a first clamping wheel, and a second clamping wheel in a turning retaining frame for a lathe provided in an embodiment of the present invention;

[0025] Figure 8 A schematic structural diagram of a rotating frame, a first adjusting rod, a second adjusting rod, a first rack, a second rack, a transmission rod and a gear ring in a turning cage for a lathe provided in an embodiment of the present invention;

[0026] Fig. 9 A schematic structural diagram of a rotating frame, a limiting ring, a first adjusting ring, a second adjusting ring and an adjusting rod in a turning cage for a lathe provided in an embodiment of the present invention;

[0027] Fig.10 A schematic structural diagram of a first mounting frame, an induction ring, an induction block and a second adjustment ring in a turning cage for a lathe provided in an embodiment of the present invention.

[0028] In the figure: 110, bracket; 120, lathe; 130, rotating screw; 140, mounting rod; 150, fixed frame; 151, frame rod; 160, rotating frame; 170, first sensing section; 180, second sensing section; 210, first clamping wheel; 220, second clamping wheel; 230, first adjusting rod; 240, second adjusting rod; 250, first mounting frame; 260, second mounting frame; 270, first spring; 280, first Two springs; 310, first rack; 320, second rack; 330, transmission rod; 340, gear ring; 350, gear sleeve; 360, first transmission sleeve; 370, second transmission sleeve; 380, limit ring; 410, induction ring; 420, induction block; 430, first adjustment ring; 440, second adjustment ring; 450, adjustment compression spring; 460, adjustment rod; 470, auxiliary spring; 480, adjustment motor; 490, adjustment screw. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] The serial numbers assigned to the components herein, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned in this application, unless otherwise specified, include direct and indirect connections (couplings). In the description of the present invention, it should be understood that the orientation or position relationship indicated by the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc. are based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0031] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0032] Embodiment 1:

[0033] like Figures 1 to 10 As shown, an embodiment of the present invention provides a turning retainer for a lathe, which includes a bracket 110, a fixed frame 150, a rotating frame 160 and an adjustment assembly.

[0034] The support 110 is slidably connected to the lathe 120 along the length direction of the workpiece. Specifically, the lathe 120 is provided with a rotating screw 130, which is arranged along the length direction of the workpiece. The rotating screw 130 is rotatably connected to the lathe 120, and a handle is arranged at the end of the rotating screw 130. The handle is arranged to facilitate driving the rotating screw 130. The lathe 120 is provided with a slide groove, which is slidably arranged along the length direction of the support 110. The support 110 is slidably arranged in the slide groove. The support 110 is provided with a through groove, and the rotating screw 130 is arranged through the through groove. A sliding block is arranged in the through groove, and the sliding block is slidably arranged in the spiral groove of the rotating screw 130. When the rotating screw 130 rotates, the support 110 slides along the length direction of the workpiece.

[0035] Two mounting rods 140 are provided on the bracket 110, and the two mounting rods 140 are spaced apart from each other. Both mounting rods 140 are slidably connected to the bracket 110. In the initial state, the distance between the two mounting rods 140 is at the maximum state. The two mounting rods 140 are horizontally arranged, one of the mounting rods 140 is above the workpiece, and the other mounting rod 140 is below the workpiece. A first adjusting member is provided on the bracket 110, and the first adjusting member is used to adjust the distance between the two mounting rods 140. When the workpiece is installed on the lathe 120, one end of the workpiece is clamped on the lathe 120, and the other end of the workpiece uses the tip of the lathe 120 to support the workpiece, and then the first adjusting member is used to adjust the distance between the two mounting rods 140.

[0036] There are two fixed frames 150, each fixed frame 150 is arranged on a mounting rod 140, and each fixed frame 150 is provided with two rack rods 151 with a preset angle, and the preset angles formed by the rack rods 151 on the two fixed frames 150 have opposite opening directions. Specifically, two rack rods 151 are arranged on each fixed frame 150, and the two rack rods 151 are fixedly connected, and there is a preset angle between the two rack rods 151, wherein the preset angle is a constant angle, and the preset angle is sixty degrees. In the upper mounting rod 140, the angle opening of the two rack rods 151 is downward, and in the lower mounting rod 140, the angle opening of the two rack rods 151 is upward. In this embodiment, the two fixed frames 150 are arranged in the same plane, the plane where the two fixed frames 150 are located is parallel to the cross section of the workpiece, and the four rack rods 151 on the two fixed frames 150 are in the same plane.

[0037] There are multiple rotating frames 160, each of which is rotatably connected to a frame rod 151. The rotating frames 160 and the frame rod 151 are arranged in the same plane. Each rotating frame 160 is provided with a first sensing segment 170 and a second sensing segment 180 that are parallel to each other. The rotating frame 160, the first sensing segment 170 and the second sensing segment 180 can form a U-shaped structure, wherein the first sensing segment 170 and the second sensing segment 180 are rod-shaped structures that are parallel to each other, and the rotating frame 160 is a rod-shaped structure that is perpendicular to the first sensing segment 170 and the second sensing segment 180. The middle part of the rotating frame 160 is rotatably connected to the frame rod 151, and when the rotating frame 160 rotates, the rotating frame 160 and the frame rod 151 are always in the same plane. A first clamping wheel 210 is provided on the first sensing section 170, and a second clamping wheel 220 is provided on the second sensing section 180. The first clamping wheel 210 can rotate on the first sensing section 170, and the second clamping wheel 220 can rotate on the second sensing section 180. When the two mounting rods 140 gradually approach each other, the first clamping wheel 210 and the second clamping wheel 220 can clamp the workpiece.

[0038] The adjustment assembly can adjust the squeezing force of the first clamping wheel 210 and the second clamping wheel 220 on the workpiece according to the diameter of the workpiece. Specifically, when the diameter of the workpiece is a first value, in the process of the two mounting rods 140 approaching each other, on one of the rack rods 151, the first clamping wheel 210 first contacts the side wall of the workpiece, and as the two mounting rods 140 approach each other, the first clamping wheel 210 and the side wall of the workpiece generate positive pressure, and at the same time, the rotating frame 160 rotates on the fixed frame 150, and the second clamping wheel 220 gradually contacts the side wall of the workpiece. After the second clamping wheel 220 contacts the side wall of the workpiece, as the two mounting rods 140 approach further, the second clamping wheel 220 and the first clamping wheel 210 clamp the workpiece together. When the diameter of the workpiece is the second value, in the process of the two mounting rods 140 approaching each other, on one of the rack rods 151, the first clamping wheel 210 first contacts the side wall of the workpiece, and as the two mounting rods 140 approach each other, the rotating frame 160 rotates on the fixed frame 150. Since the diameter of the workpiece changes, the rotation angle of the rotating frame 160 on the fixed frame 150 will change. The adjustment component adjusts the squeezing force of the first clamping wheel 210 and the second clamping wheel 220 on the workpiece, thereby ensuring that after the diameter of the workpiece changes, the first clamping wheel 210 and the second clamping wheel 220 can still stably clamp the workpiece.

[0039] A turning holder for a lathe of the present invention is used. When a lathe 120 is used to turn a pair of slender shafts, one end of the slender shaft is clamped on the lathe 120, and the tip of the lathe 120 is used to support the other end of the slender shaft. Then, a first adjustment member is used to adjust the distance between the two mounting rods 140. Initially, the distance between the two mounting rods 140 is much larger than the diameter of the slender shaft. When the two mounting rods 140 gradually approach each other, the first clamping wheel 210 first contacts the side wall of the slender shaft. When the first clamping wheel 210 squeezes the slender shaft, the first clamping wheel 210 moves relative to the first sensing section 170. At the same time, the rotating frame 160 rotates on the frame rod 151. During the rotation of the rotating frame 160, the second clamping wheel 22 0 gradually contacts the side wall of the slender shaft. When the squeezing force of the first clamping wheel 210 and the second clamping wheel 220 on the slender shaft reaches a balance, the two mounting rods 140 are no longer close to each other. At this time, the first clamping wheel 210 and the second clamping wheel 220 on the two mounting rods 140 clamp the workpiece in a stable state. When the diameter of the workpiece changes, the time point when the first clamping wheel 210 contacts the slender shaft changes. At the same time, the rotation angle of the rotating frame 160 changes. The adjustment component adjusts the squeezing force of the first clamping wheel 210 and the second clamping wheel 220 on the workpiece to ensure that when the diameter of the slender shaft changes, the first clamping wheel 210 and the second clamping wheel 220 can complete the clamping of the slender shaft, thereby ensuring the stability of the slender shaft.

[0040] Embodiment 2:

[0041] The adjustment assembly includes a first adjustment rod 230, a second adjustment rod 240 and a transmission member; the first clamping wheel 210 is slidably connected to the first sensing section 170 through the first mounting frame 250; the second clamping wheel 220 is slidably connected to the second sensing section 180 through the second mounting frame 260. Specifically, the axis of the first clamping wheel 210 is parallel to the axis of the workpiece, the axis of the second clamping wheel 220 is parallel to the axis of the first clamping wheel 210, the first clamping wheel 210 is rotatably connected to the first mounting frame 250, the second clamping wheel 220 is rotatably connected to the second mounting frame 260, the first mounting frame 250 is slidably connected to the first sensing section 170, and the second mounting frame 260 is slidably connected to the second sensing section 180. The first adjusting rod 230 is threadedly connected to the first sensing section 170. Furthermore, the extension direction of the first adjusting rod 230 is the same as the extension direction of the first sensing section 170. The first sensing section 170 is hollow inside. One end of the first adjusting rod 230 is arranged on the outside of the first sensing section 170, and the other end of the first adjusting rod 230 is arranged inside the first sensing section 170. The side wall of the first adjusting rod 230 is provided with a thread groove, and the first sensing section 170 is provided with a thread protrusion. The first adjusting rod 230 and the first sensing section 170 are threadedly matched. The first adjusting rod 230 is connected with the first mounting bracket 250. When the first adjusting rod 230 rotates, the distance between the first adjusting rod 230 and the first mounting bracket 250 can be changed. A first elastic member is arranged between the first adjusting rod 230 and the first mounting bracket 250. The first elastic member is a first spring 270. The first spring 270 is arranged inside the first sensing section 170. The first spring 270 is coaxially arranged with the first adjusting rod 230. One end of the first spring 270 abuts against the end of the first adjusting rod 230, and the other end of the first spring 270 abuts against the first mounting bracket 250. Similarly, the second adjusting rod 240 is threadedly connected to the second sensing section 180, the extension direction of the second adjusting rod 240 is the same as the extension direction of the second sensing section 180, the second sensing section 180 is hollow inside, one end of the second adjusting rod 240 is arranged on the outside of the second sensing section 180, and the other end of the second adjusting rod 240 is arranged inside the second sensing section 180, the side wall of the second adjusting rod 240 is provided with a thread groove, the second sensing section 180 is provided with a thread protrusion, and the second adjusting rod 240 and the second sensing section 180 are threadedly matched. When the second adjusting rod 240 rotates, the distance between the second adjusting rod 240 and the second mounting frame 260 can change. A second elastic member is arranged between the second adjusting rod 240 and the second mounting frame 260. The second elastic member is a second spring 280. The second spring 280 is arranged inside the second sensing section 180. The second spring 280 is arranged coaxially with the second adjusting rod 240. One end of the second spring 280 abuts against the end of the second adjusting rod 240, and the other end of the second spring 280 abuts against the second mounting frame 260. The transmission member can transmit the rotation of the rotating frame 160 relative to the frame rod 151 to the rotation of the first adjusting rod 230 and the second adjusting rod 240.Specifically, when the diameter of the workpiece is a first value, the rotating frame 160 rotates a first angle relative to the frame rod 151. At this time, the distance between the first adjusting rod 230 and the first mounting frame 250 is a first distance, and the first spring 270 can be compressed to a first length, and the clamping force of the first clamping wheel 210 on the workpiece is a first degree; when the diameter of the workpiece is a second value, the rotating frame 160 rotates a second angle relative to the frame rod 151. At this time, the distance between the first adjusting rod 230 and the first mounting frame 250 is a second distance, and the first spring 270 can be compressed to a second length, and the clamping force of the first clamping wheel on the workpiece is a second degree, thereby achieving different clamping forces on workpieces of different diameters, thereby ensuring the stability of the workpiece during turning.

[0042] Embodiment 3:

[0043] The transmission member includes a first rack 310, a second rack 320 and a transmission rod 330. The transmission rod 330 is rotatably connected to the rotating frame 160. A toothed ring 340 is provided on the frame rod 151. The toothed ring 340 is fixedly connected to the frame rod 151. A toothed sleeve 350 is provided at one end of the transmission rod 330. The toothed sleeve 350 is coaxially fixedly connected to the transmission rod 330. The toothed sleeve 350 always meshes with the toothed ring 340. When the rotating frame 160 rotates relative to the frame rod 151, the transmission rod 330 rotates around its own axis. The first rack 310 and the second rack 320 are both slidably connected to the rotating frame 160. The outer wall of the transmission rod 330 is provided with a first tooth groove. The first rack 310 and the second rack 320 mesh with the first tooth groove on the outer wall of the transmission rod 330 at the same time. When the transmission rod 330 rotates around its own axis, the first rack 310 and the second rack 320 slide on the rotating frame 160 at the same time. When the first rack 310 slides on the rotating frame 160, the first adjusting rod 230 can rotate in the first sensing section 170. When the first adjusting rod 230 rotates on the first sensing section 170, the distance between the first adjusting rod 230 and the first mounting frame 250 changes; when the second rack 320 slides on the rotating frame 160, the second adjusting rod 240 can rotate in the second sensing section 180. When the second adjusting rod 240 rotates on the second sensing section 180, the distance between the second adjusting rod 240 and the second mounting frame 260 changes.

[0044] Embodiment 4:

[0045] The transmission member also includes a first transmission sleeve 360 ​​and a second transmission sleeve 370. The first transmission sleeve 360 ​​is rotatably connected to the first sensing section 170. The first transmission sleeve 360 ​​is sleeved on the outer side of the first adjustment rod 230. The first transmission sleeve 360 ​​cooperates with the keyway of the first adjustment rod 230. Specifically, the first adjustment rod 230 is provided with a first keyway, and the first keyway is arranged along the axis direction of the first adjustment rod 230. The first transmission sleeve 360 ​​is provided with a first spline, and the first spline is slidably arranged in the first keyway. When the first transmission sleeve 360 ​​rotates, the first adjustment rod 230 rotates synchronously. At the same time, the first transmission sleeve 360 ​​and the first adjustment rod 230 move in the axis direction. Further, the outer wall of the first transmission sleeve 360 ​​is provided with a second tooth groove, and the first transmission sleeve 360 ​​meshes with the first rack 310. When the first rack 310 slides on the rotating frame 160, the first rack 310 drives the first transmission sleeve 360 ​​to rotate. Similarly, the second transmission sleeve 370 is rotatably connected to the second sensing section 180, and the second transmission sleeve 370 is sleeved on the outside of the second adjustment rod 240. The second transmission sleeve 370 cooperates with the keyway of the second adjustment rod 240. Specifically, the second adjustment rod 240 is provided with a second keyway, and the second keyway is arranged along the axial direction of the second adjustment rod 240. The second transmission sleeve 370 is provided with a second spline, and the second spline is slidably arranged in the second keyway. When the second transmission sleeve 370 rotates, the second adjustment rod 240 rotates synchronously, and at the same time, the second transmission sleeve 370 and the second adjustment rod 240 move in the axial direction. Further, the outer wall of the second transmission sleeve 370 is provided with a third tooth groove, and the second transmission sleeve 370 meshes with the second rack 320. When the second rack 320 slides on the rotating frame 160, the second rack 320 drives the second transmission sleeve 370 to rotate.

[0046] Embodiment 5:

[0047] The adjustment assembly also includes a limit unit, which can prevent the rotating frame 160 from rotating on the frame rod 151 when the rotation speed of the workpiece is lower than a first preset value. Specifically, during the turning process of the workpiece, if the workpiece breaks unexpectedly at the turning point, the broken workpiece has a certain inertia. At this time, the broken workpiece lacks a clamping and positioning at one end, and the broken workpiece is prone to swing. At this time, the swing of the workpiece will damage the tip of the lathe 120. By setting the limit unit, after the rotation speed of the workpiece is reduced, in order to ensure that the workpiece has sufficient stability, the limit unit prevents the rotation of the rotating frame 160 on the frame rod 151, ensuring that the multiple first clamping wheels 210 and the multiple second clamping wheels 220 can stably clamp the workpiece, reducing the probability of the workpiece damaging the tip of the lathe 120.

[0048] Embodiment 6:

[0049] The limiting unit includes a sensing module, a limiting ring 380 and a second adjusting member. A first rotating shaft is fixedly provided on the rotating frame 160, and the first rotating shaft is rotatably connected to the frame rod 151. The limiting ring 380 is coaxially sleeved on the first rotating shaft, and the limiting ring 380 can slide on the first rotating shaft. When the limiting ring 380 slides on the first rotating shaft, the limiting ring 380 can abut against the frame rod 151. The contact surface of the limiting ring 380 and the frame rod 151 is a rough surface. When the limiting ring 380 abuts against the frame rod 151, there is friction resistance when the rotating frame 160 rotates relative to the frame rod 151. The sensing module is used to sense the rotation speed of the workpiece, and the second adjusting member is used to increase the positive pressure between the limiting ring 380 and the frame rod 151 when the rotation speed of the workpiece is less than the first preset value. When the positive pressure between the limiting ring 380 and the frame rod 151 increases, the friction resistance when the rotating frame 160 rotates relative to the frame rod 151 increases, thereby hindering the rotation of the rotating frame 160 on the frame rod 151.

[0050] Embodiment 7:

[0051] The induction module includes an induction ring 410 and a plurality of induction blocks 420. The induction ring 410 is coaxially arranged with the first clamping wheel 210. The plurality of induction blocks 420 are evenly distributed around the circumferential direction of the induction ring 410. Each induction block 420 is slidably arranged along the radial direction of the induction ring 410. Specifically, a second rotating shaft is coaxially fixedly arranged on the first clamping wheel 210, the second rotating shaft is rotatably connected to the first mounting frame 250, and the induction ring 410 is coaxially fixedly connected to the second rotating shaft. When the first clamping wheel 210 abuts against the workpiece, the workpiece and the first clamping wheel 210 rotate simultaneously, and the rotation directions of the workpiece and the first clamping wheel 210 are opposite. When the first clamping wheel 210 rotates, the induction ring 410 rotates synchronously. The outer wall of the induction ring 410 is provided with a plurality of mounting grooves, each of which is arranged along the radial direction of the induction ring 410, and the plurality of mounting grooves are evenly distributed in the circumferential direction of the induction ring 410, and each induction block 420 is slidably arranged in a mounting groove. When the induction ring 410 rotates, the plurality of induction blocks 420 will slide in the mounting groove under the action of centrifugal force, and the sliding distance of the induction block 420 in the mounting groove can indirectly reflect the rotation speed of the workpiece.

[0052] Embodiment 8:

[0053] The second adjustment member includes a first adjustment ring 430, a second adjustment ring 440, an adjustment spring 450 and an adjustment rod 460; the first adjustment ring 430 is coaxially arranged with the stop ring 380, and the first adjustment ring 430 is slidably connected with the rotating frame 160. Specifically, the first adjustment ring 430 is coaxially sleeved on the first rotating shaft, the first adjustment ring 430 can slide on the first rotating shaft, and the first adjustment ring 430 can rotate on the first rotating shaft. The adjustment spring 450 is arranged between the first adjustment ring 430 and the stop ring 380. Specifically, the adjustment spring 450 is coaxially arranged with the first rotating shaft, one end of the adjustment spring 450 abuts against the first adjustment ring 430, and the other end of the adjustment spring 450 abuts against the stop ring 380. The second adjustment ring 440 is coaxially slidably connected to the sensing ring 410. Specifically, the second adjustment ring 440 is coaxially sleeved on the second rotating shaft, and the second adjustment ring 440 is slidably connected to the second rotating shaft. The end face of the second adjustment ring 440 close to the sensing ring 410 is set as a conical surface, and the conical surface abuts against multiple sensing blocks 420 at the same time. When the sensing blocks 420 slide along the mounting grooves, the multiple sensing blocks 420 can push the conical surface of the second adjustment ring 440, so that the distance between the second adjustment ring 440 and the sensing ring 410 changes. The adjustment rod 460 is connected between the second adjustment ring 440 and the first adjustment ring 430. Specifically, the adjustment rod 460 is a telescopic rod. When the first mounting frame 250 slides on the first sensing section 170, the length of the adjustment rod 460 can be changed. One end of the adjustment rod 460 is rotatably connected to the first adjustment ring 430, and the other end of the adjustment rod 460 is rotatably connected to the second adjustment ring 440. The distance between the second adjustment ring 440 and the sensing ring 410 changes, and the first adjustment ring 430 moves on the first rotating shaft, and the length of the adjustment compression spring 450 can be adjusted. Further, when the rotation speed of the workpiece is lower than the first preset value, the sliding distance of the sensing block 420 in the mounting groove is reduced, and the compression amount of the extrusion spring is increased, so that the positive pressure between the limit ring 380 and the frame rod 151 increases.

[0054] Furthermore, an auxiliary spring 470 is arranged between the limit ring 380 and the end of the first rotating shaft. The auxiliary spring 470 is coaxially arranged with the first rotating shaft. One end of the auxiliary spring 470 abuts against the end of the first rotating shaft, and the other end of the auxiliary spring 470 abuts against the limit ring 380. In the initial state, the auxiliary spring 470 and the adjustment compression spring 450 are in a balanced state, and the positive pressure between the limit ring 380 and the frame rod 151 is in a maximum state. As the workpiece rotates, the positive pressure between the limit ring 380 and the frame rod 151 gradually decreases. When the rotation speed of the workpiece is lower than the first preset value, the auxiliary spring 470 adjusts the adjustment compression spring 450, and the auxiliary spring 470 and the adjustment compression spring 450 jointly adjust the positive pressure between the limit ring 380 and the frame rod 151.

[0055] Embodiment 9:

[0056] There are two groups of limit units, one of which is arranged on the first clamping wheel 210, and the other is arranged on the second clamping wheel 220. Two limit units are arranged on each rotating frame 160 to ensure that the auxiliary spring 470 and the adjustment spring have sufficient force when the rotation speed of the workpiece is lower than the first preset value.

[0057] Embodiment 10:

[0058] The first adjustment member includes an adjustment motor 480 and an adjustment screw 490. The adjustment motor 480 is fixedly arranged on the bracket 110. The mounting rod 140 is connected to the bracket 110 by sliding up and down. The adjustment screw 490 is arranged vertically and is connected to the bracket 110 by rotation. The spiral wire on the adjustment screw 490 is divided into a first section and a second section. The spiral wire of the first section is opposite to the spiral wire of the second section. The adjustment screw 490 passes through two mounting rods 140. The mounting rods 140 are provided with spiral blocks. The mounting rods 140 are spirally matched with the adjustment screw 490. One of the mounting rods 140 is matched with the first section of the spiral wire, and the other mounting rod 140 is matched with the second section of the spiral wire. The adjustment motor 480 is used to drive the adjustment screw 490 to rotate. When the adjustment motor 480 rotates forward, the two mounting rods 140 are close to each other. When the adjustment motor 480 rotates reversely, the two mounting rods 140 are away from each other.

[0059] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A turning cage for a lathe, characterized in that: include: The bracket is slidably connected to the lathe along the length direction of the workpiece; two mounting rods are arranged on the bracket, and the two mounting rods are arranged at intervals up and down; the bracket is provided with a first adjustment member, and the first adjustment member is used to adjust the distance between the two mounting rods; A fixing frame, wherein two fixing frames are provided, each fixing frame is provided on a mounting rod, and each fixing frame is provided with two rack rods with a preset angle, and the preset angles formed by the rack rods on the two fixing frames have opening directions opposite to each other; A rotating frame, wherein a plurality of rotating frames are provided, each rotating frame is rotatably connected to a frame rod; each rotating frame is provided with a first sensing section and a second sensing section which are parallel to each other; a first clamping wheel is provided on the first sensing section, and a second clamping wheel is provided on the second sensing section; An adjustment component, wherein the adjustment component can adjust the squeezing force of the first clamping wheel and the second clamping wheel on the workpiece according to the diameter of the workpiece; The adjustment assembly includes a first adjustment rod, a second adjustment rod and a transmission member; the first clamping wheel is slidably connected to the first sensing section through the first mounting frame; the second clamping wheel is slidably connected to the second sensing section through the second mounting frame; the first adjustment rod is threadedly connected to the first sensing section, and a first elastic member is provided between the first adjustment rod and the first mounting frame; the second adjustment rod is threadedly connected to the second sensing section, and a second elastic member is provided between the second adjustment rod and the second mounting frame; the transmission member can transmit the rotation of the rotating frame relative to the frame rod to the rotation of the first adjustment rod and the second adjustment rod; The transmission member includes a first rack, a second rack and a transmission rod, the transmission rod is rotatably connected to the rotating frame, a gear ring is provided on the frame rod, a gear sleeve is provided at one end of the transmission rod, and the gear sleeve is always engaged with the gear ring; the first rack and the second rack are both slidably connected to the rotating frame, a first tooth groove is provided on the outer wall of the transmission rod, and the first rack and the second rack are simultaneously engaged with the first tooth groove on the outer wall of the transmission rod, when the first rack slides on the rotating frame, the first adjustment rod can rotate in the first sensing section, and when the second rack slides on the rotating frame, the second adjustment rod can rotate in the second sensing section; The transmission member also includes a first transmission sleeve and a second transmission sleeve. The first transmission sleeve is rotatably connected to the first sensing section, and the first transmission sleeve is arranged on the outside of the first adjusting rod, and the first transmission sleeve cooperates with the key groove of the first adjusting rod; the outer wall of the first transmission sleeve is provided with a second tooth groove, and the first transmission sleeve is meshed with the first rack; the second transmission sleeve is rotatably connected to the second sensing section, and the second transmission sleeve is arranged on the outside of the second adjusting rod, and the second transmission sleeve cooperates with the key groove of the second adjusting rod; the outer wall of the second transmission sleeve is provided with a third tooth groove, and the second transmission sleeve is meshed with the second rack.

2. A turning cage for a lathe according to claim 1, characterized in that: The adjustment assembly further comprises a limiting unit, which can prevent the rotating frame from rotating on the frame rod when the rotation speed of the workpiece is lower than a first preset value.

3. A turning cage for a lathe according to claim 2, characterized in that: The limit unit includes a sensing module, a limit ring and a second adjusting member. The limit ring is arranged between the rotating frame and the frame rod. The limit ring is slidably connected to the rotating frame. The limit ring can abut against the frame rod. The contact surface between the limit ring and the frame rod is a rough surface. The sensing module is used to sense the rotation speed of the workpiece. The second adjusting member is used to increase the positive pressure between the limit ring and the frame rod when the rotation speed of the workpiece is less than a first preset value.

4. A turning cage for a lathe according to claim 3, characterized in that: The induction module comprises an induction ring and a plurality of induction blocks. The induction ring is coaxially arranged with the first clamping wheel. The plurality of induction blocks are evenly distributed around the circumference of the induction ring. Each induction block is slidably arranged along the radial direction of the induction ring.

5. A turning cage for a lathe according to claim 4, characterized in that: The second adjustment member includes a first adjustment ring, a second adjustment ring, an adjustment compression spring and an adjustment rod; the first adjustment ring is coaxially arranged with the limiting ring, and the first adjustment ring is slidably connected with the rotating frame; the adjustment compression spring is arranged between the first adjustment ring and the limiting ring; the second adjustment ring is coaxially slidably connected with the induction ring, the end face of the second adjustment ring is arranged as a conical surface, the conical surface abuts against multiple induction blocks at the same time, and the adjustment rod is connected between the second adjustment ring and the first adjustment ring.

6. A turning cage for a lathe according to claim 5, characterized in that: Two groups of limiting units are provided, wherein one group of limiting units is provided on the first clamping wheel, and the other group of limiting units is provided on the second clamping wheel.

7. The turning cage for a lathe according to claim 1, characterized in that: The first adjusting part includes an adjusting motor and an adjusting screw. The adjusting motor is fixedly arranged on the bracket, and the mounting rod is connected to the bracket for vertical sliding; the adjusting screw is rotatably connected to the bracket, and the adjusting screw passes through two mounting rods. A spiral block is arranged on the mounting rod, and the mounting rod is spirally matched with the adjusting screw; the adjusting motor is used to drive the adjusting screw to rotate.

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