Numerical control lathe for machining mechanical fittings

Abstract

The application discloses a numerical control lathe for machining mechanical fittings and relates to the technical field of mechanical fitting machining. The numerical control lathe comprises a machine tool, an adjusting device, a fixed-length device and a cutting device which are arranged above the machine tool. The long strip-shaped workpiece is placed on the inner wall of the placing wheel. The limiting wheel is driven to move by rotating the screw rod, the height of the workpiece is adjusted and then fixed, the rotation of the screw rod is limited by the clamping block matched with the limiting groove, the rotation of the screw rod caused by external force is prevented, the fixation of the workpiece is affected, the position of the limiting wheel is fixed by the limiting wheel matched with the plug, the hollow block and the first spring, the limiting wheel can freely move by pressing the bayonet matched with the T-shaped block, the hollow block, the U-shaped block, the first spring, the plug and the butt joint groove, the size of the workpiece is adjusted according to different design or production requirements in the production process, and greater flexibility is provided.

Description

Technical Field

[0001] This invention relates to the field of mechanical parts processing technology, specifically to a CNC lathe for processing mechanical parts. Background Technology

[0002] CNC lathes are indispensable and important equipment in the field of modern machining, and are widely used in the processing of mechanical parts. Their background technology covers multiple aspects, including CNC technology, machine tool structure, machining processes, and their applications in various industrial sectors.

[0003] Patent publication number CN213888723U relates to the field of mechanical parts processing technology. This patent provides a CNC lathe for machining mechanical parts, belonging to the technical field of CNC machine tools for machining mechanical parts. The CNC lathe includes a machine body, with a housing fixedly connected to the upper end of the machine body. A control terminal is fixedly connected to the front end of the housing, a control panel is fixedly connected to the upper side of the front end of the control terminal, and a setting panel is fixedly connected to the front end of the control terminal. A laser cutting control terminal is fixedly connected to the right end of the control terminal, and a laser cutting control panel and a worktable are fixedly connected to the front end of the laser cutting control terminal. The rear end of the laser cutting control terminal is fixedly connected to the front end of the housing. This device improves upon traditional cutting devices by using laser cutting instead of traditional cutting tools. When problems occur, repairing this device is safer than with traditional cutting tools, reducing the risk of scratches and other hazards. Furthermore, the laser cutting process in this device is equipped with a cooling device using distilled water, extending the device's lifespan.

[0004] In the aforementioned patent, the device improves upon the original cutting device by using laser cutting instead of the original cutting tool. However, the current measuring equipment has the following problems: if it cannot adjust to different workpiece sizes in a timely manner, it may require more adjustment and processing time, resulting in a longer production cycle. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a CNC lathe for machining mechanical parts, which solves the problems mentioned in the background section.

[0006] To achieve the above objectives, the present invention provides the following technical solution: A CNC lathe for machining mechanical parts, comprising a machine tool, wherein an adjustment device, a length-fixing device, and a cutting device are arranged above the machine tool; wherein the adjustment device comprises a fixed frame, a placement wheel, a limit wheel, a lead screw, a limit rod, a locking block, a hollow block, a plug, a U-shaped block, a No. 1 spring, a T-shaped block, and a pin; the fixed frame is fixedly installed on the top of the machine tool; the placement wheel is rotatably installed on the inner wall of the fixed frame; the limit wheel is slidably installed on the inner wall of the fixed frame; one side of the lead screw is fixedly installed on the top of the limit wheel; the other side of the lead screw slides through the inner and outer walls of the fixed frame; the limit rod is rotatably installed on the top of the lead screw; the locking block is slidably installed on the outer wall of the limit rod; a long strip workpiece is placed on the inner wall of the placement wheel; by rotating the lead screw, the spiral groove is rotated, causing the lead screw to move linearly; the movement of the lead screw drives the limit wheel to move, thereby adjusting and fixing the height of the workpiece; when the lead screw stops rotating, the locking block is engaged in the limit groove. The rotation of the lead screw is restricted. The hollow block is fixedly installed through the inner and outer walls of the fixed frame. The insert block is slidably installed on the inner wall of the hollow block. The U-shaped block is slidably installed on the inner wall of the hollow block. The first spring is disposed between the insert block and the U-shaped block. One side of the T-shaped block is slidably installed on the inner wall of the hollow block, and the other side of the T-shaped block is fixedly installed on the inner wall of the U-shaped block. The pin slides through the inner and outer walls of the hollow block. The movement of the limiting wheel causes the outer wall of the limiting wheel to contact the inclined surface of the insert block, causing the insert block to move along the inner wall of the hollow block. The movement of the insert block compresses the first spring. When the docking groove and the insert block are at the same level, the first spring is released, causing the insert block to reset and insert into the docking groove. At this time, the position of the limit wheel is fixed. By pressing the pin, it contacts the inclined surface of the T-shaped block, causing the T-shaped block to move along the inner wall of the hollow block. The movement of the T-shaped block causes the U-shaped block to move, and the movement of the U-shaped block stretches the first spring. When the first spring is stretched to a certain extent, it will pull the insert block to move. The movement of the insert block will disengage from the docking groove, at which time the limit wheel can move freely.

[0007] According to the above technical solution, the top of the lead screw is provided with a limiting groove, the front side of the limiting wheel is provided with a mating groove, the circumferential surface of the lead screw is provided with a spiral groove, the spiral groove is threadedly connected to the fixed frame, and the spiral groove is rotated by rotating the lead screw, which causes the lead screw to move linearly. The bottom of the insert block is set as an inclined surface, a second spring is provided between the T-shaped block and the hollow block, and a third spring is provided between the pin and the hollow block. The second spring drives the T-shaped block to reset, and the third spring drives the pin to reset.

[0008] According to the above technical solution, the length-fixing device includes a fixed frame, a slide rail, a slider, a rotating rod, and a push rod. The fixed frame is fixedly installed on the top of the machine tool, the slide rail is fixedly installed on the top of the machine tool, the slider is slidably installed on the inner wall of the slide rail, the rotating rod is rotatably installed on the right side of the slider, and the push rod is fixedly installed on the right side of the rotating rod. A torsion spring is provided between the rotating rod and the slider. A slot is provided on the inner wall of the slide rail. The workpiece will pass through the inner wall of the fixed frame until it contacts the rotating rod, causing the rotating rod to rotate. The rotation of the rotating rod drives the push rod to move. The position of the push rod can be adjusted by installing bolts and nuts.

[0009] According to the above technical solution, the length-fixing device further includes a bolt, a nut, an auxiliary seat, a limiting angle, a round rod, a stop block, and a No. 4 spring. The bolt is fixedly installed inside the push rod, the nut is threaded onto the threaded surface of the bolt, and an installation groove is provided on the inner wall of the nut. The auxiliary seat is sleeved on the left side of the nut, the limiting angle is fixedly installed on the inner wall of the installation groove, and the bottom of the limiting angle is set as an inclined surface. The round rod slides through the inner and outer walls of the auxiliary seat, the stop block is fixedly installed on the top of the round rod, and the No. 4 spring is set between the auxiliary seat and the stop block. Due to the frequent rotation of the rotating rod, the nut may loosen under long-term movement. The movement of the nut drives the auxiliary seat to move, and the stop block contacts the limiting angle through the inclined surface of the stop block, causing the stop block to move downward and compress the No. 4 spring. At this time, the stop block is released from the limitation of the limiting angle, and the nut and bolt can be threadedly connected normally. When the nut is loose, the non-inclined surface of the limiting angle contacts the non-inclined surface of the stop block, preventing the nut from reversing.

[0010] According to the above technical solution, the length-fixing device further includes an L-shaped block, a fixed rod, and a No. 5 spring. One side of the L-shaped block is slidably mounted on the inner wall of the slider, and the fixed rod is fixedly mounted on the inner wall of the slider. The other side of the L-shaped block is slidably mounted on the circumferential surface of the fixed rod. The No. 5 spring is disposed between the L-shaped block and the slider. The length of the workpiece cutting is fixed by moving the position of the slider. When adjustment is required, the L-shaped block is moved downward to compress the No. 5 spring, causing the L-shaped block to disengage from the slot. At this time, the slider can be freely moved to the position to be adjusted.

[0011] According to the above technical solution, the length-fixing device further includes a receiving rod, a hollow cylinder, a No. 6 spring, and a brake block. The receiving rod is fixedly installed on the top of the fixed frame. The hollow cylinder is slidably installed on the circumferential surface of the receiving rod. The No. 6 spring is disposed between the hollow cylinder and the receiving rod. The brake block is fixedly installed on the circumferential surface of the hollow cylinder. The brake block is moved to the bottom of the pressure plate by the movement of the push rod and contact with the pressure plate. The brake block moves downward by the contact of the pressure plate and the brake block. The movement of the brake block drives the hollow cylinder to move downward. The movement of the hollow cylinder compresses the No. 6 spring.

[0012] According to the above technical solution, the cutting device includes a long block, a rotary motor, a knob, a connecting rod, a sliding block, and a pressure plate. The long block is fixedly installed on the top of the machine tool. The fixed end of the rotary motor is fixedly installed on the right side of the long block. The knob is fixedly installed on the output end of the rotary motor. The connecting rod is fixedly installed on the left side of the knob. The sliding block is fixedly installed on the left side of the long block. The pressure plate is slidably installed on the inner wall of the sliding block. The rotation of the rotary motor drives the knob to rotate. The rotation of the knob drives the connecting rod to move linearly back and forth. The movement of the connecting rod drives the pressure plate to move along the inner wall of the sliding block.

[0013] According to the above technical solution, the cutting device further includes a cylinder, a sliding column, a No. 7 spring, a receiving block, a second rotary motor, and a cutting blade. The cylinder is fixedly installed on the top of the fixed frame, the sliding column is slidably installed on the inner wall of the cylinder, the receiving block is fixedly installed on the top of the sliding column, the No. 7 spring is disposed between the receiving block and the cylinder, the fixed end of the second rotary motor is fixedly installed on the rear side of the receiving block, the cutting blade is rotatably installed on the inner wall of the receiving block, and the output end of the second rotary motor is connected to the cutting blade via a first belt. The rotation of the second rotary motor drives the cutting blade to rotate via the first belt. When the brake block moves downward, it contacts the receiving block, causing the receiving block to move downward. The movement of the receiving block drives the cutting blade to move while compressing the No. 7 spring, thereby cutting the workpiece.

[0014] This invention provides a CNC lathe for machining mechanical parts. It has the following advantages:

[0015] (1) In this invention, by setting up an adjustment device, a long strip workpiece is placed on the inner wall of the placement wheel. By rotating the lead screw, the limit wheel is moved to adjust the height of the workpiece and then fix it. The rotation of the lead screw is restricted by the locking block and the limit groove to prevent the lead screw from being accidentally touched by external force and thus affecting the fixation of the workpiece. The position of the limit wheel is fixed by the limit wheel in conjunction with the insert block, hollow block and No. 1 spring. The limit wheel can move freely by pressing the pin in conjunction with the T-shaped block, hollow block, U-shaped block, No. 1 spring, insert block and docking groove. During the production process, it can be adjusted according to different design or production needs to adapt to the size of the workpiece and provide greater flexibility.

[0016] (2) In this invention, the workpiece is advanced by the placement wheel through the setting of the fixed length device. The workpiece will pass through the inner wall of the fixed frame until it contacts the rotating rod and makes the rotating rod rotate. The rotation of the rotating rod, together with the bolt and nut, can adjust the position of the push rod. Due to the frequent rotation of the rotating rod, the nut may become loose due to long-term movement. The nut can be properly connected to the nut and bolt by moving the auxiliary seat, the stop block, the limit angle and the No. 4 spring. When the nut is loose, the non-sloping surface of the limit angle contacts the non-sloping surface of the stop block, so that the nut cannot reverse. Preventing the nut from reversing can effectively prevent the loosening of the connection part, ensure the stability and reliability of the mechanical structure, and avoid accidents or failures caused by loosening. The length of the workpiece is fixed by moving the position of the slider. When adjustment is required, the L-shaped block is moved down to compress the No. 5 spring so that the L-shaped block is disengaged from the slot. At this time, the slider can be automatically moved to the adjustment position. The fixed length can quickly and continuously process multiple workpieces, reduce the time for workers to manually measure and mark, and improve the overall production efficiency.

[0017] (3) In this invention, by setting up a cutting device, the rotation of the second rotary motor drives the cutting blade to rotate through the first belt. The rotation of the first rotary motor, together with the knob, connecting rod, pressure plate, sliding block, push rod, brake block, hollow cylinder and the sixth spring, causes the receiving block to move downward. The movement of the receiving block drives the cutting blade to move and compresses the seventh spring. The movement of the receiving block is damped by the seventh spring, so as to cut the workpiece. The damping can maintain stable contact between the tool and the workpiece and ensure the consistency of the cutting depth and width. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 This is a partial cross-sectional structural diagram of the adjusting device of the present invention;

[0020] Figure 3 This is a schematic diagram of the position structure of the limiting rod and the locking block of the present invention;

[0021] Figure 4 This is a schematic diagram of the internal structure of the hollow block of the present invention;

[0022] Figure 5 This is a schematic diagram of the fixed-length device of the present invention;

[0023] Figure 6 This is a schematic diagram of the bolt and nut positions of the present invention;

[0024] Figure 7 This is a schematic diagram of the internal structure of the auxiliary seat of the present invention;

[0025] Figure 8 This is a schematic diagram of the L-shaped block and slider position structure of the present invention;

[0026] Figure 9 This is a partial cross-sectional structural diagram of the cutting device of the present invention;

[0027] Figure 10 This is a schematic diagram of the position and structure of the brake block and the receiving rod of the present invention.

[0028] In the diagram: 1. Machine tool; 10. Fixed frame; 11. Placement wheel; 12. Limiting wheel; 13. Lead screw; 14. Limiting rod; 15. Locking block; 16. Hollow block; 17. Insert block; 18. U-shaped block; 19. No. 1 spring; 110. T-shaped block; 111. Pin; 20. Fixed frame; 21. Slide rail frame; 22. Slider; 23. Rotating rod; 24. Push rod; 25. Bolt; 26. Nut; 27. Auxiliary seat; 28. Limiting angle; 29. ​​Round rod; 210 211. Abutment block; 212. Spring No. 4; 213. L-shaped block; 214. Fixing rod; 215. Spring No. 5; 216. Supporting rod; 217. Hollow cylinder; 218. Spring No. 6; 219. Brake block; 30. Long block; 310. Rotary motor one; 32. Knob; 33. Connecting rod; 34. Sliding block; 35. Pressure plate; 36. Cylinder; 37. Sliding column; 38. Spring No. 7; 39. Supporting block; 310. Rotary motor two; 311. Cutting blade. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0030] Please see Figures 1-4One embodiment of the present invention is: a CNC lathe for machining mechanical parts, including a machine tool 1. An adjustment device is provided above the machine tool 1. The adjustment device includes a fixed frame 10, a placement wheel 11, a limit wheel 12, a lead screw 13, a limit rod 14, a locking block 15, a hollow block 16, a plug block 17, a U-shaped block 18, a No. 1 spring 19, a T-shaped block 110, and a pin 111. The fixed frame 10 is fixedly installed on the top of the machine tool 1. The placement wheel 11 is rotatably installed on the inner wall of the fixed frame 10. The limit wheel 12 is slidably installed on the inner wall of the fixed frame 10. One side of the lead screw 13 is fixedly installed on the top of the limit wheel 12, and the other side of the lead screw 13 slides through the inner and outer walls of the fixed frame 10. The limit rod 14 is rotatably installed on the top of the lead screw 13. The locking block... 15 is slidably installed on the outer wall of the limit rod 14 to prevent the lead screw 13 from being accidentally touched by external force and causing it to rotate, thereby affecting the fixation of the workpiece. The hollow block 16 is fixedly installed through the inner and outer walls of the fixing frame 10. The insert block 17 is slidably installed on the inner wall of the hollow block 16. The U-shaped block 18 is slidably installed on the inner wall of the hollow block 16. The first spring 19 is set between the insert block 17 and the U-shaped block 18. The insert block 17 is reset by the first spring 19. One side of the T-shaped block 110 is slidably installed on the inner wall of the hollow block 16. The other side of the T-shaped block 110 is fixedly installed on the inner wall of the U-shaped block 18. The pin 111 is slidably installed through the inner and outer walls of the hollow block 16. During the production process, it can be adjusted according to different design or production needs to adapt to the size of the workpiece and provide greater flexibility.

[0031] The top of the lead screw 13 is provided with a limit groove, the front side of the limit wheel 12 is provided with a docking groove, the circumferential surface of the lead screw 13 is provided with a spiral groove, the spiral groove is threaded to the fixed frame 10, so that the lead screw 13 moves linearly, the bottom of the insert block 17 is provided with an inclined surface, a second spring is provided between the T-shaped block 110 and the hollow block 16, the second spring drives the T-shaped block 110 to reset, a third spring is provided between the pin 111 and the hollow block 16, the third spring drives the pin 111 to reset.

[0032] In this embodiment, during operation, a long strip-shaped workpiece is placed on the inner wall of the placement wheel 11. Rotating the lead screw 13 drives the spiral groove to rotate, causing the lead screw 13 to move linearly. This movement of the lead screw 13 drives the limiting wheel 12 to move, thus adjusting and fixing the workpiece's height. When the lead screw 13 stops rotating, the locking block 15 is engaged in the limiting groove to restrict its rotation, preventing accidental rotation due to external force, which would affect the workpiece's fixation. The movement of the limiting wheel 12 causes its outer wall to contact the inclined surface of the insertion block 17, allowing the insertion block 17 to move along the inner wall of the hollow block 16. This movement compresses the first spring 19, causing the workpiece to align with the groove. When the insert block 17 is at the same level, the first spring 19 is released, causing the insert block 17 to reset and insert into the docking groove. At this time, the position of the limit wheel 12 is fixed. By pressing the pin 111, it contacts the inclined surface of the T-shaped block 110, causing the T-shaped block 110 to move along the inner wall of the hollow block 16. The movement of the T-shaped block 110 causes the U-shaped block 18 to move. The movement of the U-shaped block 18 will stretch the first spring 19. When the first spring 19 is stretched to a certain extent, it will pull the insert block 17 to move. The movement of the insert block 17 will disengage from the docking groove. At this time, the limit wheel 12 can move freely. During the production process, it can be adjusted according to different design or production needs to adapt to the size of the workpiece and provide greater flexibility.

[0033] Please see Figures 1-10 Based on the above embodiments, in another embodiment of the present invention, a length-fixing device and a cutting device are provided above the machine tool 1. The length-fixing device includes a fixed frame 20, a slide rail 21, a slider 22, a rotating rod 23, and a push rod 24. The fixed frame 20 is fixedly installed on the top of the machine tool 1, the slide rail 21 is fixedly installed on the top of the machine tool 1, the slider 22 is slidably installed on the inner wall of the slide rail 21, the rotating rod 23 is rotatably installed on the right side of the slider 22, and the push rod 24 is fixedly installed on the right side of the rotating rod 23. A first torsion spring is provided between the rotating rod 23 and the slider 22. The first torsion spring drives the rotating rod 23 to reset. A slot is opened on the inner wall of the slide rail 21. The workpiece is advanced by the placement wheel 11 and passes through the inner wall of the fixed frame 20.

[0034] The length-fixing device also includes a bolt 25, a nut 26, an auxiliary seat 27, a limiting angle 28, a round rod 29, a stop block 210, and a No. 4 spring 211. The bolt 25 is fixedly installed inside the push rod 24. The nut 26 is threaded onto the threaded surface of the bolt 25. An installation groove is provided on the inner wall of the nut 26. The auxiliary seat 27 is sleeved on the left side of the nut 26. The limiting angle 28 is fixedly installed on the inner wall of the installation groove. The bottom of the limiting angle 28 is set as an inclined surface. The round rod 29 slides through the inner and outer walls of the auxiliary seat 27. The stop block 210 is fixedly installed on the top of the round rod 29. The position of the push rod 24 can be adjusted by installing the bolt 25 and the nut 26. At the same time, the nut 26 is prevented from reversing, which can effectively prevent the connection from loosening, ensure the stability and reliability of the mechanical structure, and avoid accidents or failures caused by loosening. The No. 4 spring 211 is set between the auxiliary seat 27 and the stop block 210. The No. 4 spring 211 drives the stop block 210 to reset.

[0035] The length-fixing device also includes an L-shaped block 212, a fixing rod 213, and a No. 5 spring 214. One side of the L-shaped block 212 is slidably mounted on the inner wall of the slider 22, and the fixing rod 213 is fixedly mounted on the inner wall of the slider 22. The other side of the L-shaped block 212 is slidably mounted on the circumferential surface of the fixing rod 213, so that the slider 22 can be freely moved to the adjustment position. The length-fixing device can quickly and continuously process multiple workpieces, reduce the time for workers to manually measure and mark, and improve the overall production efficiency. The No. 5 spring 214 is set between the L-shaped block 212 and the slider 22, and the L-shaped block 212 is reset by the No. 5 spring 214.

[0036] The length-fixing device also includes a receiving rod 215, a hollow cylinder 216, a No. 6 spring 217, and a brake block 218. The receiving rod 215 is fixedly installed on the top of the fixing frame 20. The hollow cylinder 216 is slidably installed on the circumferential surface of the receiving rod 215. The No. 6 spring 217 is set between the hollow cylinder 216 and the receiving rod 215. The No. 6 spring 217 drives the hollow cylinder 216 to reset. The brake block 218 is fixedly installed on the circumferential surface of the hollow cylinder 216. The movement of the brake block 218 enables the subsequent cutting of the workpiece to achieve intermittent cutting.

[0037] The cutting device includes a long block 30, a rotary motor 31, a knob 32, a connecting rod 33, a sliding block 34, and a pressure plate 35. The long block 30 is fixedly installed on the top of the machine tool 1. The fixed end of the rotary motor 31 is fixedly installed on the right side of the long block 30. The knob 32 is fixedly installed on the output end of the rotary motor 31. The connecting rod 33 is fixedly installed on the left side of the knob 32. The sliding block 34 is fixedly installed on the left side of the long block 30. The pressure plate 35 is slidably installed on the inner wall of the sliding block 34. The rotary motor 31 rotates, driving the knob 32 to rotate. The rotation of the knob 32 drives the connecting rod 33 to move linearly back and forth. The movement of the connecting rod 33 drives the pressure plate 35 to move along the inner wall of the sliding block 34.

[0038] The cutting device also includes a cylinder 36, a sliding column 37, a No. 7 spring 38, a receiving block 39, a second rotary motor 310, and a cutting blade 311. The cylinder 36 is fixedly installed on the top of the fixed frame 20. The sliding column 37 is slidably installed on the inner wall of the cylinder 36. The receiving block 39 is fixedly installed on the top of the sliding column 37. The No. 7 spring 38 is located between the receiving block 39 and the cylinder 36. The receiving block 39 is reset by the No. 7 spring 38. The fixed end of the second rotary motor 310 is fixedly installed on the rear side of the receiving block 39. The cutting blade 311 is rotatably installed on the inner wall of the receiving block 39. The output end of the second rotary motor 310 is connected to the cutting blade 311 through a No. 1 belt. The movement of the receiving block 39 is damped by the No. 7 spring 38 to achieve cutting of the workpiece. The damping can maintain stable contact between the tool and the workpiece and ensure the consistency of cutting depth and width.

[0039] In this embodiment, the workpiece is advanced via the placement wheel 11, passing through the inner wall of the fixed frame 20 until it contacts the rotating rod 23, causing the rotating rod 23 to rotate. The rotation of the rotating rod 23 drives the push rod 24 to move. The position of the push rod 24 can be adjusted by installing the bolt 25 and nut 26. Due to the frequent rotation of the rotating rod 23, the nut 26 may loosen under long-term movement. The movement of the nut 26 drives the auxiliary seat 27 to move, and the inclined surface of the abutment block 210 contacts the limiting angle 28, causing the abutment block 210 to move downward and compress the No. 4 spring 211. At this time, the abutment block 210 is released from the limitation of the limiting angle 28, and only then can the nut 26 and bolt 25 be threaded normally. Next, when the nut 26 is loose, the non-sloping surface of the limiting angle 28 contacts the non-sloping surface of the abutment block 210, preventing the nut 26 from reversing. Preventing the nut 26 from reversing can effectively prevent the connection from loosening, ensuring the stability and reliability of the mechanical structure and avoiding accidents or failures caused by loosening. The length of the workpiece cutting is fixed by moving the position of the slider 22. When adjustment is needed, the L-shaped block 212 is moved downward to compress the No. 5 spring 214, causing the L-shaped block 212 to disengage from the slot. At this time, the slider 22 can be freely moved to the position to be adjusted. Fixed length can quickly and continuously process multiple workpieces, reducing the time for workers to manually measure and mark, and improving the overall production efficiency.

[0040] Rotary motor 31 rotates, driving knob 32 to rotate. Knob 32 rotates, causing connecting rod 33 to move linearly back and forth. The movement of connecting rod 33 causes pressure plate 35 to move along the inner wall of slide block 34. Push rod 24 moves and contacts brake block 218, causing brake block 218 to move below pressure plate 35. Pressure plate 35 contacts brake block 218, causing brake block 218 to move downward. The movement of brake block 218 causes hollow cylinder 216 to move downward. The movement of hollow cylinder 216 compresses spring 217. Rotary motor 310 rotates, driving cutting blade 311 to rotate via belt 1. Brake block 218 moves downward and contacts receiving block 39, causing receiving block 39 to move downward. The movement of receiving block 39 causes cutting blade 311 to move and compresses spring 38, thus cutting the workpiece.

[0041] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A CNC lathe for machining mechanical parts, comprising a machine tool, characterized in that: An adjustment device, a length-fixing device, and a cutting device are installed above the machine tool; The adjusting device includes a fixed frame, a placement wheel, a limit wheel, a lead screw, a limit rod, a locking block, a hollow block, an insert block, a U-shaped block, a first spring, a T-shaped block, and a pin. The fixed frame is fixedly installed on the top of the machine tool. The placement wheel is rotatably installed on the inner wall of the fixed frame. The limit wheel is slidably installed on the inner wall of the fixed frame. One side of the lead screw is fixedly installed on the top of the limit wheel, and the other side of the lead screw slides through the inner and outer walls of the fixed frame. The limit rod is rotatably installed on the top of the lead screw. The locking block slides on the outer wall of the limit rod. The hollow block is fixedly installed through the inner and outer walls of the fixed frame. The insert block slides on the inner wall of the hollow block. The U-shaped block slides on the inner wall of the hollow block. The first spring is disposed between the insert block and the U-shaped block. One side of the T-shaped block slides on the inner wall of the hollow block, and the other side of the T-shaped block is fixedly installed on the inner wall of the U-shaped block. The pin slides through the inner and outer walls of the hollow block. The length-fixing device includes a fixed frame, a slide rail, a slider, a rotating rod, and a push rod. The fixed frame is fixedly installed on the top of the machine tool, the slide rail is fixedly installed on the top of the machine tool, the slider is slidably installed on the inner wall of the slide rail, the rotating rod is rotatably installed on the right side of the slider, the push rod is fixedly installed on the right side of the rotating rod, a torsion spring is provided between the rotating rod and the slider, and a slot is provided on the inner wall of the slide rail.

2. The CNC lathe for machining mechanical parts according to claim 1, characterized in that: The top of the lead screw is provided with a limiting groove, the front side of the limiting wheel is provided with a mating groove, the circumferential surface of the lead screw is provided with a spiral groove, the spiral groove is threaded to the fixed frame, the bottom of the insert block is provided with an inclined surface, a second spring is provided between the T-shaped block and the hollow block, and a third spring is provided between the pin and the hollow block.

3. The CNC lathe for machining mechanical parts according to claim 2, characterized in that: The length-fixing device also includes a bolt, a nut, an auxiliary seat, a limiting angle, a round rod, a stop block, and a No. 4 spring. The bolt is fixedly installed inside the push rod, the nut is threaded onto the threaded surface of the bolt, and the inner wall of the nut has an installation groove. The auxiliary seat is sleeved on the left side of the nut, the limiting angle is fixedly installed on the inner wall of the installation groove, and the bottom of the limiting angle is set as an inclined surface. The round rod slides through the inner and outer walls of the auxiliary seat, the stop block is fixedly installed on the top of the round rod, and the No. 4 spring is disposed between the auxiliary seat and the stop block.

4. A CNC lathe for machining mechanical parts according to claim 3, characterized in that: The length-fixing device also includes an L-shaped block, a fixing rod, and a No. 5 spring. One side of the L-shaped block is slidably mounted on the inner wall of the slider, the fixing rod is fixedly mounted on the inner wall of the slider, the other side of the L-shaped block is slidably mounted on the circumferential surface of the fixing rod, and the No. 5 spring is disposed between the L-shaped block and the slider.

5. A CNC lathe for machining mechanical parts according to claim 4, characterized in that: The length-fixing device also includes a receiving rod, a hollow cylinder, a No. 6 spring, and a brake block. The receiving rod is fixedly installed on the top of the fixed frame, the hollow cylinder is slidably installed on the circumferential surface of the receiving rod, the No. 6 spring is disposed between the hollow cylinder and the receiving rod, and the brake block is fixedly installed on the circumferential surface of the hollow cylinder.

6. A CNC lathe for machining mechanical parts according to claim 5, characterized in that: The cutting device includes a long block, a rotary motor, a knob, a connecting rod, a sliding block, and a pressure plate. The long block is fixedly installed on the top of the machine tool. The fixed end of the rotary motor is fixedly installed on the right side of the long block. The knob is fixedly installed on the output end of the rotary motor. The connecting rod is fixedly installed on the left side of the knob. The sliding block is fixedly installed on the left side of the long block. The pressure plate is slidably installed on the inner wall of the sliding block.

7. A CNC lathe for machining mechanical parts according to claim 6, characterized in that: The cutting device also includes a cylinder, a sliding column, a No. 7 spring, a receiving block, a second rotary motor, and a cutting blade. The cylinder is fixedly installed on the top of the fixed frame, the sliding column is slidably installed on the inner wall of the cylinder, the receiving block is fixedly installed on the top of the sliding column, the No. 7 spring is disposed between the receiving block and the cylinder, the fixed end of the second rotary motor is fixedly installed on the rear side of the receiving block, the cutting blade is rotatably installed on the inner wall of the receiving block, and the output end of the second rotary motor is connected to the cutting blade via a No. 1 belt.

Images