Numerical control lathe

Abstract

The invention discloses a numerical control lathe, and relates to the technical field of numerical control lathes. The numerical control lathe comprises a rack, a lathe body and a cutting part are installed on the rack, and a clamp body used for clamping a workpiece is installed on the lathe body; an auxiliary supporting mechanism is installed on the rack in a sliding mode, the auxiliary supporting mechanism is connected with a reciprocating driving mechanism, and the reciprocating driving mechanism is configured to be capable of driving the auxiliary supporting mechanism to move so that the auxiliary supporting mechanism can support any position of a workpiece; the auxiliary supporting mechanism comprises a seat body connected to the rack, the seat body is provided with a slewing bearing piece and a pipe body installed on the slewing bearing piece, and the pipe body can rotate relative to the seat body through the slewing bearing piece; a self-adaptive abutting assembly capable of abutting against and supporting different diameter sections of the workpiece is installed on the pipe body, a control assembly connected to the self-adaptive abutting assembly is installed on the rack, and the control assembly is used for maintaining or relieving abutting of the self-adaptive abutting assembly on the workpiece. By means of the clamping device, the machined section and the clamped section can be controlled to be kept in a short distance.

Description

Technical Field

[0001] The present application relates to the technical field of CNC lathes, and in particular to a CNC lathe. Background Art

[0002] In the field of modern mechanical processing, CNC lathes have become indispensable equipment in the manufacturing industry due to their advantages such as high precision and high degree of automation. As the manufacturing industry continues to increase its requirements for component processing accuracy, complexity and production efficiency, the technical iteration of CNC lathes is also accelerating. In many processing scenarios, it is often necessary to process long shaft workpieces. The processed section and the clamped section of such workpieces may be far apart. This feature makes the workpiece extended for a long time when the tool performs operations such as cutting on the processed section of the workpiece. The workpiece will be subjected to a large force when being processed. These forces include cutting force, friction force, etc. These forces can easily cause long shaft workpieces to bend and deform during processing. This deformation will cause deviations in the diameter size of the shaft workpiece or make it difficult for the cylindricity of the shaft workpiece to meet the design requirements, thereby affecting the performance of the entire component after assembly. Summary of the invention

[0003] In order to shorten the distance between a processed section and a clamped section of a workpiece, the present application provides a CNC lathe.

[0004] The CNC lathe provided in this application adopts the following technical solution: A CNC lathe comprises a frame, wherein a bed and a cutting piece are mounted on the frame, a fixture body for clamping a workpiece is mounted on the bed, the bed can drive the workpiece to rotate, and one side of the fixture body is a clamping side; an auxiliary support mechanism is also slidably mounted on the frame at the clamping side, the auxiliary support mechanism is connected to a reciprocating drive mechanism, and the reciprocating drive mechanism is configured to drive the auxiliary support mechanism to move so that the auxiliary support mechanism supports any position of the workpiece; The auxiliary support mechanism includes a seat body connected to the frame, the seat body is equipped with a swivel support and a tube body installed on the swivel support, and the tube body can rotate relative to the seat body through the swivel support; an adaptive pressing component capable of pressing and supporting different diameter sections of the workpiece is installed on the tube body, and a control component connected to the adaptive pressing component is installed on the frame, and the control component is used to maintain / release the pressure of the adaptive pressing component on the workpiece.

[0005] By adopting the above technical solution, the workpiece is first clamped by the fixture body to ensure that the workpiece passes through the interior of the tube body. At this time, when the workpiece is cut by the cutting piece, the adaptive pressing component can be controlled by the control component to press and support the shaft segment of the long-axis workpiece. The reciprocating drive mechanism can drive the adaptive pressing component to move to change the position of the workpiece being pressed and supported, thereby supporting shaft segments of different diameters. Based on this structure, the distance between the processed segment and the clamped segment can always be kept short.

[0006] Preferably, the adaptive pressure component includes a plurality of expansion pressure parts, and a plurality of mounting grooves are provided on the inner wall of the tube body corresponding to the plurality of expansion pressure parts, each of the expansion pressure parts is installed in the corresponding mounting groove, and the plurality of expansion pressure parts are distributed along the axial direction of the tube body; a mounting ring is connected to the end of the seat body, the end of the tube body is attached to the mounting ring and the tube body and the mounting ring are rotatably connected, an air cavity is provided in the mounting ring, and an air supply channel is provided in the tube body corresponding to each expansion pressure part, one port of each air supply channel is connected to the corresponding expansion pressure part, and the other port is connected to the air cavity, and when the tube body rotates relative to the mounting ring, the air cavity is always connected to the air supply channel; the control component is connected to the mounting ring.

[0007] By adopting the above technical solution, after the workpiece is located in the tube body, the control component can supply air into the air cavity to make the expansion and pressure piece expand and press against the workpiece. When the workpiece rotates, the tube body will rotate accordingly, and the expansion and pressure piece can expand and press against shaft workpieces of different diameters.

[0008] Preferably, the control assembly includes an air source component installed on the frame, the air source component is connected to a flexible air pipe, the flexible air pipe is connected to the mounting ring and communicates with the air cavity, and an opening and closing valve and a pressure reducing valve are installed on the flexible air pipe.

[0009] By adopting the above technical solution, the air source component can supply air to the air cavity through the flexible air pipe, and the opening and closing of the air pipe and the gas pressure can be controlled based on the opening and closing valve and the pressure reducing valve.

[0010] Preferably, the reciprocating drive mechanism includes a fixed plate mounted on the frame, the fixed plate is rotatably connected to a screw rod, the seat body is equipped with a matching strip, the matching strip has a connecting hole, the screw rod is threadedly connected to the connecting hole, and the fixed plate is equipped with a feed member connected to the screw rod.

[0011] By adopting the above technical solution, the driving feed member can drive the screw rod to rotate and thus drive the seat body to move.

[0012] Preferably, the auxiliary support mechanism is provided with a center assembly on a side away from the bed, a reciprocating driving member is installed on the frame, the center assembly is connected to the reciprocating driving member, and the reciprocating driving member is used to drive the center assembly to move and contact the workpiece.

[0013] By adopting the above technical solution, the reciprocating driving member can drive the top assembly to move and support the workpiece. This design is used to improve the positioning accuracy of the workpiece and also supports the workpiece to a certain extent.

[0014] Preferably, the tip assembly includes a connecting seat connected to the reciprocating driving member, the connecting seat has a receiving hole at one end close to the clamp body, the receiving hole is slidably connected to a pressing tip, and the pressing tip and the receiving hole are commonly connected to a reset spring.

[0015] By adopting the above technical solution, the reciprocating driving member can be driven to drive the connecting seat to move, thereby driving the pressing top to press against the workpiece, and the reset spring is compressed at this time.

[0016] Preferably, a plate body is installed on the frame, a detection part for detecting the position of the processed section of the workpiece is installed on the plate body, a control module connected to the feed and transfer part is installed on the frame, the detection part is connected to the control module, and the control module controls the operation of the feed and transfer part in response to the detection signal of the detection part.

[0017] By adopting the above technical solution, based on the real-time position of the processed section of the workpiece detected by the detection member, while ensuring that the workpiece is not pressed tightly by the expansion and pressure member, the control module can control the rotation member to drive the expansion and pressure member to move to change the pressed position of the workpiece.

[0018] Preferably, the detection component is a CCD camera, and the plate body is also provided with a lighting component.

[0019] In summary, the present invention includes at least one of the following beneficial technical effects: 1. First, the fixture body is used to clamp the workpiece and ensure that the workpiece passes through the inside of the tube body. At this time, when the workpiece is cut by the cutting piece, the control component can be used to control the adaptive pressing component to press and support the shaft section of the long-axis workpiece. The reciprocating drive mechanism can drive the adaptive pressing component to move to change the position of the workpiece being pressed and supported, thereby supporting shaft sections with different diameters. Based on this structure, the distance between the processed section and the clamped section can always be kept short; 2. After the workpiece is located in the tube body, the control assembly can supply air into the air cavity to make the expansion and pressing member expand and press against the workpiece. When the workpiece rotates, the tube body will rotate accordingly. The expansion and pressing member can expand and press against shaft workpieces of different diameters; 3. Driving the reciprocating driving member can drive the connecting seat to move, thereby driving the pressing top to press against the workpiece. At this time, the return spring is compressed. This design is used to improve the positioning accuracy of the workpiece and also supports the workpiece to a certain extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1It is a schematic diagram of the overall structure of a CNC lathe in an embodiment of the present application; Figure 2 is a cross-sectional view for illustrating an adaptive pressing component; Figure 3 yes Figure 1 A magnified view of part A; Figure 4 It is a cross-sectional view used to show the top components.

[0021] Markings in the accompanying drawings: 1. frame; 11. bed; 12. fixture body; 13. clamping side; 14. plate; 15. detection part; 16. lighting part; 2. auxiliary support mechanism; 21. seat body; 22. tube body; 221. mounting groove; 222. air supply channel; 23. adaptive pressure component; 231. expansion pressure component; 232. mounting ring; 2321. air cavity; 24. control component; 241. air source component; 242. flexible air pipe; 243. opening and closing valve; 244. pressure reducing valve; 3. reciprocating drive mechanism; 31. fixing plate; 32. screw rod; 33. matching strip; 331. connecting hole; 34. feeding and rotating part; 4. top assembly; 41. reciprocating drive part; 42. connecting seat; 421. receiving hole; 43. pressing top; 44. reset spring. DETAILED DESCRIPTION

[0022] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0023] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., and orientations or positional relationships indicated are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0024] The embodiment of the present application discloses a CNC lathe, which is used to ensure that the distance between the processed section and the clamped section of a long-axis workpiece is short, thereby preventing the workpiece from being deformed as much as possible.

[0025] Reference Figure 1 A CNC lathe includes a frame 1, on which a bed 11 and a cutting piece are installed. The bed 11 is installed with a fixture body 12 for clamping a workpiece. The bed 11 can drive the workpiece to rotate. The bed 11 usually includes a spindle box, a fixture body 12 such as a three-jaw chuck, and the cutting piece is usually a tool holder with a tool. The above-mentioned fixture body 12, cutting piece and bed 11 are prior art in this field, so the specific structure is not repeated here.

[0026] Reference Figure 1The right side of the clamp body 12 is the clamping side 13, and an auxiliary support mechanism 2 is slidably installed on the frame 1 at the clamping side 13. The auxiliary support mechanism 2 is connected to a reciprocating drive mechanism 3. The reciprocating drive mechanism 3 can drive the auxiliary support mechanism 2 to move so that the auxiliary support mechanism 2 can support any position of the workpiece.

[0027] The fixture body 12 is used to clamp one end of the workpiece to determine the position of the processed section of the workpiece. Then, without affecting the processing of the workpiece by the cutting piece, the reciprocating drive mechanism 3 is driven to drive the auxiliary support mechanism 2 to move to one side of the processed section, and the auxiliary support mechanism 2 is used to press the workpiece to support the workpiece.

[0028] Reference Figure 1 and Figure 2 The auxiliary support mechanism 2 includes a seat body 21 slidably connected to the frame 1, the seat body 21 is equipped with a plurality of swivel bearings and a tube body 22 installed on the plurality of swivel bearings, the tube body 22 can rotate relative to the seat body 21 through the swivel bearings, and the swivel bearings are preferably bearings; an adaptive pressing component 23 capable of pressing and supporting different diameter sections of the workpiece is installed on the tube body 22, and a control component 24 connected to the adaptive pressing component 23 is installed on the frame 1, and the control component 24 is used to maintain / release the pressure of the adaptive pressing component 23 on the workpiece.

[0029] Reference Figure 2 The adaptive pressure component 23 includes a plurality of expansion pressure members 231. A plurality of mounting grooves 221 are provided on the inner wall of the tube body 22 corresponding to the plurality of expansion pressure members 231. Each expansion pressure member 231 is installed in the corresponding mounting groove 221. The plurality of expansion pressure members 231 are distributed along the axis direction of the tube body 22. The expansion pressure members 231 are preferably gas expansion rings, and the inside of the gas expansion rings can expand after being inflated. The right end of the seat body 21 is connected to a mounting ring 232, and the mounting ring 232 is coaxial with the tube body 22. The end of the tube body 22 is arranged on the mounting ring 232 and the tube body 22 and the mounting ring 232 are rotatably connected. An air cavity 2321 is opened in the mounting ring 232. The tube body 22 has an air supply channel 222 corresponding to each expansion and pressure piece 231. One port of each air supply channel 222 is connected to the corresponding expansion and pressure piece 231, and the other port is connected to the air cavity 2321. When the tube body 22 rotates relative to the mounting ring 232, the air cavity 2321 can always be connected to the air supply channel 222.

[0030] Reference Figure 1 and Figure 2 The control component 24 includes an air source component 241 installed on the frame 1. The air source component 241 is preferably an air compressor. The air source component 241 is connected to a flexible air pipe 242. The flexible air pipe 242 is connected to the mounting ring 232 and communicates with the air cavity 2321. An opening and closing valve 243 and a pressure reducing valve 244 are installed on the flexible air pipe 242. The opening and closing valve 243 is preferably an electromagnetic reversing valve.

[0031] The workpiece clamped in the fixture body 12 needs to be ensured to be inserted into the tube body 22. At this time, the air source part 241 can be used to pass air into the air cavity 2321 through the flexible air pipe 242 and flow into each expansion and pressure member 231. Each expansion and pressure member 231 will expand and press a certain section of the workpiece.

[0032] After a shaft-type workpiece is processed, the diameter of a certain section of the shaft will usually change. In the present application, as long as the diameter of the shaft-type workpiece does not change too much, the reciprocating drive mechanism 3 can drive multiple expansion and pressure parts 231 to move to any position of the workpiece to tighten the workpiece, wherein multiple expansion and pressure parts 231 can tighten shaft sections with different diameters.

[0033] Reference Figure 3 The reciprocating drive mechanism 3 includes a fixed plate 31 mounted on the frame 1, the fixed plate 31 is rotatably connected to the screw rod 32, the seat body 21 is installed with a matching strip 33, the matching strip 33 has a connecting hole 331, the screw rod 32 is threadedly connected to the connecting hole 331, and the fixed plate 31 is installed with a feed rotation member 34 connected to the screw rod 32, and the feed rotation member 34 is preferably a motor.

[0034] The driving rotating member 34 drives the screw rod 32 to rotate, thereby driving the seat body 21 to move left and right, thereby driving the expansion pressing member 231 to reach different positions.

[0035] Reference Figure 1 and Figure 3 A plate body 14 is installed on the frame 1, and a detection member 15 for detecting the position of the processed section of the workpiece is installed on the plate body 14. The detection member 15 is a CCD camera in this application. A lighting member 16 is also provided on the plate body 14. A control module connected to the feed and rotation member 34 is installed on the frame 1. The detection member 15 is connected to the control module, and the opening and closing valve 243 is also connected to the control module. The control module controls the feed and rotation member 34 and the opening and closing valve 243 to work in response to the detection signal of the detection member 15.

[0036] During processing, based on the real-time position of the processed section of the workpiece detected by the detection member 15, after the control module controls the opening and closing valve 243 to stop supplying air to the expansion and pressure member 231 so that the workpiece is not pressed tightly, the rotating member 34 is controlled to drive the expansion and pressure member 231 to move to change the pressed position of the workpiece so that the distance between the processed section and the clamped section of the workpiece is always kept short.

[0037] Reference Figure 4 Combined with Figure 1, a top assembly 4 is provided on the right side of the auxiliary support mechanism 2, a reciprocating driving member 41 is installed on the frame 1, the reciprocating driving member 41 is a cylinder, the top assembly 4 is connected to the reciprocating driving member 41, and the reciprocating driving member 41 is used to drive the top assembly 4 to move leftward to contact the workpiece. Specifically, the top assembly 4 includes a connecting seat 42 connected to the reciprocating driving member 41, the connecting seat 42 is slidably connected to the frame 1, and a receiving hole 421 is opened at one end of the connecting seat 42 close to the fixture body 12, and a pressing top 43 is slidably connected to the receiving hole 421, and a return spring 44 is commonly connected to the pressing top 43 and the receiving hole 421.

[0038] The implementation principle of a CNC lathe in the embodiment of the present application is: The clamp body 12 is used to clamp one end of the workpiece. The workpiece needs to be ensured to be inserted into the tube body 22. The position of the processed section of the workpiece is determined. Then, without affecting the processing of the workpiece by the cutting part, the rotating part 34 is driven to drive the screw rod 32 to rotate, thereby driving the seat body 21 to move left and right, thereby driving the expansion and pressure part 231 to reach the side of the workpiece to be processed. The air source part 241 is used to pass air into the air cavity 2321 and flow into each expansion and pressure part 231. Each expansion and pressure part 231 expands and presses this section of the workpiece tightly. In addition, it is also necessary to drive the reciprocating drive part 41 to drive the pressure top 43 to press against the right end of the workpiece. Then, the bed 11 is used to drive the workpiece to rotate. At this time, the tube body 22 will also rotate accordingly, and the workpiece is cut by the cutting part.

[0039] The embodiments of this specific implementation method are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A CNC lathe, characterized in that: The machine comprises a frame (1), wherein the frame (1) is provided with a bed (11) and a cutting piece, wherein the bed (11) is provided with a fixture body (12) for clamping a workpiece, wherein the bed (11) is capable of driving the workpiece to rotate, and one side of the fixture body (12) is a clamping side (13); an auxiliary support mechanism (2) is also slidably mounted on the frame (1) at the clamping side (13), wherein the auxiliary support mechanism (2) is connected to a reciprocating drive mechanism (3), and wherein the reciprocating drive mechanism (3) is configured to be capable of driving the auxiliary support mechanism (2) to move so that the auxiliary support mechanism (2) supports any position of the workpiece; The auxiliary support mechanism (2) comprises a seat body (21) connected to the frame (1); the seat body (21) is provided with a slewing support and a tube body (22) installed on the slewing support; the tube body (22) can rotate relative to the seat body (21) through the slewing support; an adaptive pressing component (23) capable of pressing and supporting workpieces of different diameters is installed on the tube body (22); a control component (24) connected to the adaptive pressing component (23) is installed on the frame (1); the control component (24) is used to maintain / release the pressure of the adaptive pressing component (23) on the workpiece.

2. A CNC lathe according to claim 1, characterized in that: The adaptive pressure component (23) comprises a plurality of expansion pressure members (231); a plurality of mounting grooves (221) are provided on the inner wall of the tube body (22) corresponding to the plurality of expansion pressure members (231); each of the expansion pressure members (231) is mounted in a corresponding mounting groove (221); and the plurality of expansion pressure members (231) are distributed along the axis direction of the tube body (22); a mounting ring (232) is connected to the end of the seat body (21); the end of the tube body (22) is attached to the mounting ring (232); and the tube body (22) and the mounting ring (232) are connected to each other. 2) are rotatably connected, an air cavity (2321) is opened in the mounting ring (232), and an air supply channel (222) is opened in the tube body (22) corresponding to each expansion and pressure member (231), one port of each air supply channel (222) is connected to the corresponding expansion and pressure member (231), and the other port is connected to the air cavity (2321), when the tube body (22) rotates relative to the mounting ring (232), the air cavity (2321) is always connected to the air supply channel (222); the control component (24) is connected to the mounting ring (232).

3. A CNC lathe according to claim 2, characterized in that: The control component (24) comprises an air source component (241) mounted on the frame (1); the air source component (241) is connected to a flexible air pipe (242); the flexible air pipe (242) is connected to the mounting ring (232) and communicates with the air cavity (2321); an opening and closing valve (243) and a pressure reducing valve (244) are mounted on the flexible air pipe (242).

4. A CNC lathe according to claim 1, characterized in that: The reciprocating drive mechanism (3) comprises a fixed plate (31) mounted on the frame (1), the fixed plate (31) being rotatably connected to a screw rod (32), the seat body (21) being mounted with a matching strip (33), the matching strip (33) being provided with a connecting hole (331), the screw rod (32) being threadedly connected to the connecting hole (331), and the fixed plate (31) being mounted with a feed member (34) connected to the screw rod (32).

5. A CNC lathe according to claim 4, characterized in that: A center assembly (4) is provided on the side of the auxiliary support mechanism (2) away from the bed (11); a reciprocating driving member (41) is installed on the frame (1); the center assembly (4) is connected to the reciprocating driving member (41); and the reciprocating driving member (41) is used to drive the center assembly (4) to move and contact a workpiece.

6. A CNC lathe according to claim 5, characterized in that: The top assembly (4) includes a connecting seat (42) connected to a reciprocating driving member (41), and a receiving hole (421) is opened at one end of the connecting seat (42) close to the clamp body (12), and the receiving hole (421) is slidably connected to a pressing top (43), and the pressing top (43) and the receiving hole (421) are commonly connected to a return spring (44).

7. A CNC lathe according to claim 4, characterized in that: A plate body (14) is mounted on the frame (1), a detection member (15) for detecting the position of a processed section of a workpiece is mounted on the plate body (14), a control module connected to a feed rotating member (34) is mounted on the frame (1), the detection member (15) is connected to the control module, and the control module controls the feed rotating member (34) to operate in response to a detection signal from the detection member (15).

8. A CNC lathe according to claim 7, characterized in that: The detection component (15) is a CCD camera, and the plate body (14) is also provided with an illumination component (16).

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