Numerically-controlled lathe with turning tool height convenient to adjust

Abstract

The utility model relates to the technical field of numerical control lathes, in particular to a numerical control lathe convenient to adjust turning tool height, which comprises a lathe main body and a moving seat arranged on the lathe, a first mounting plate is arranged on the upper end face of the moving seat, a plurality of turning tools are placed on the first mounting plate, and a support frame is arranged on the upper end face of the first mounting plate. A second mounting plate is arranged on the upper end face of the supporting frame, an L-shaped plate is slidably connected to the outer wall of the supporting frame, the turning tool is located between the inner side of the L-shaped plate and the supporting frame, and a push plate is slidably connected into the L-shaped plate. Compared with the prior art, according to the scheme, the sliding blocks are symmetrically arranged in the mounting groove, the adjusting blocks are arranged on the upper end faces of the sliding blocks, the driving assembly used for driving the sliding blocks to drive the adjusting blocks is mounted in the mounting groove, through cooperative use of the devices, the height of the turning tool can be adjusted only by rotating the driving assembly, and operation is convenient.

Description

Technical Field

[0001] This utility model relates to the field of CNC lathe technology, specifically to a CNC lathe that facilitates adjustment of the cutting tool height. Background Technology

[0002] CNC lathes are among the most widely used CNC machine tools. They are mainly used for cutting and machining the inner and outer cylindrical surfaces, inner and outer conical surfaces with arbitrary cone angles, complex rotating inner and outer curved surfaces, and cylindrical and conical threads of shaft or disc parts. They can also perform grooving, drilling, reaming, boring, and other machining operations.

[0003] Currently, patent publication number CN215746478U proposes a CNC lathe tool post for easy tool replacement, including a mounting base. The upper surface of the mounting base is provided with a lower limit plate, the upper surface of the lower limit plate is provided with a connecting seat, the upper surface of the connecting seat is provided with an upper limit plate, and an aluminum cover is provided at the center of the top surface of the upper limit plate. A tool mounting area is formed between the upper surface of the lower limit plate, the side of the connecting seat, and the lower surface of the upper limit plate. A tool is installed inside the tool mounting area, and the tool tip is located outside the tool mounting area. The surface of the upper limit plate has threaded holes, and positioning studs are threaded through and screwed into the threaded holes. A rotating head is provided at the top of the positioning stud, and the bottom of the positioning stud is in contact with the upper surface of the corresponding lower tool.

[0004] With the above settings, the positioning effect of the tool is good, and the tool is easy to replace. By adding an L-shaped limiting plate on the outside of the tool installation area, all four side walls of the tool can be restricted and the tool can be installed stably. The tool can be moved by pulling the connecting rod. The scale value corresponding to the position of the connecting rod is the extension length of the tool, which makes it easy to adjust the extension length of the tool head and improve the practicality of the device.

[0005] However, the existing technical solutions still have the following drawbacks in operation:

[0006] When adjusting the height of a cutting tool, the different thicknesses and sizes of different types of cutting tools cause the position of the tool to shift after each installation. Usually, shims are added to adjust the tool height in this case, but this requires frequent testing of the tool height, which is cumbersome. In addition, the thickness of the shims varies, making it difficult to adjust accurately and inconvenient to use. Utility Model Content

[0007] This utility model aims to provide a CNC lathe with an easy-to-adjust tool height, mainly to solve the problem that in the prior art, when adjusting the center height of the tool, the position of the tool will shift after each installation due to the different thicknesses and sizes of different types of tools. Usually, shims are added to adjust the tool height in this case, but this requires frequent testing of the tool height, which is cumbersome. In addition, the thickness of the shims varies, making it difficult to adjust accurately and inconvenient to use.

[0008] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0009] A CNC lathe with adjustable tool height includes a lathe body and a movable seat mounted on the lathe. A first mounting plate is provided on the upper surface of the movable seat, and several cutting tools are placed on the first mounting plate. A support frame is provided on the upper surface of the first mounting plate, and a second mounting plate is provided on the upper surface of the support frame. An L-shaped plate is slidably connected to the outer wall of the support frame. The cutting tools are located between the inner side of the L-shaped plate and the support frame. A push plate is slidably connected inside the L-shaped plate. A groove is formed on one side of the L-shaped plate, and a connecting rod is fixed to one side of the push plate. One end of the connecting rod extends out of the groove and is slidably connected to the groove. Several mounting slots are formed on the upper surface of the first mounting plate. Slider blocks are symmetrically arranged in the mounting slots. Adjusting blocks are provided on the sliders and are slidably connected in the mounting slots. A driving assembly for driving the sliders to move the adjusting blocks is installed in the mounting slots. The lower surfaces of the cutting tools and the L-shaped plate abut against the upper surfaces of the adjusting blocks.

[0010] The working principle and beneficial effects of this utility model:

[0011] 1. Working Principle: When the height of the cutting tool needs to be adjusted, the tool is placed on the first mounting plate and located inside the L-shaped plate. The connecting rod is moved, and the connecting rod moves along the slide groove, driving the push plate fixed at one end to move. The push plate drives the cutting tool to move along the inner wall of the L-shaped plate. After adjusting the extension length of the cutting tool, the drive assembly is rotated. The drive assembly drives the two sliders to move towards each other. The movement of the two sliders will push the adjusting block to move upward. The upward movement of the adjusting block will drive the L-shaped plate and the cutting tool to move upward. The upward movement of the L-shaped plate will drive the push plate and the connecting rod to move upward synchronously. When the cutting tool moves to the appropriate height, (rotate the rotating head at the top of the positioning stud, so that the positioning stud moves to the bottom end and contacts the upper surface of the cutting tool at the lower end under the cooperation of the threaded hole, and the cutting tool is positioned). The part in parentheses is the prior art cited, which is not described in detail in this application.

[0012] 2. Beneficial effects:

[0013] Existing technology involves inserting four different cutting tools into their respective tool mounting areas from the open end of an L-shaped pusher plate. The tool tips are positioned outside the mounting areas. The L-shaped pusher plate limits the sidewalls of the tools, restricting all four sides. Pulling a connecting rod moves a movable plate, which in turn moves the cutting tools. The scale value corresponding to the position of the connecting rod indicates the tool's extension length, facilitating precise adjustment of the tip extension. However, when adjusting the tool height, the different thicknesses and sizes of the various cutting tools cause a shift in the tool's facing position after each installation. This is typically addressed by adding shims for tool alignment. The previous method involved adjusting the tool height, but this required frequent testing, which was cumbersome. Furthermore, the inconsistent thickness of the shims made precise adjustment difficult and inconvenient. This new solution addresses this issue by symmetrically arranging sliders within the mounting slot, with an adjustment block on the upper surface of each slider. A drive assembly for driving the slider and adjusting the block is also installed within the mounting slot. With the combined use of these devices, adjusting the tool center height no longer requires adding shims. This solves the technical problems associated with adjusting tool height using shims, which requires frequent testing, is cumbersome, and suffers from inconsistent shim thickness, making precise adjustment difficult and inconvenient.

[0014] Preferably, the cross-section of the slider is a right-angled triangle, and the cross-section of the adjusting block is an isosceles trapezoid. The inclined surfaces of the two sliders abut against the inclined surfaces on both sides of the adjusting block. Because the inclined surfaces of the two sliders abut against the two inclined surfaces of the adjusting block, when the two sliders move towards each other, they press upwards against the adjusting block, thereby driving the cutting tool upwards. The mutual pressing between the inclined surfaces of the two sliders and the two inclined surfaces of the adjusting block drives the adjusting block upwards. Simultaneously, the force exerted by the two sliders on the adjusting block is more even, making the upward movement of the adjusting block more stable, and thus making the adjustment of the cutting tool height more precise.

[0015] Preferably, the drive assembly includes a bidirectional threaded rod rotatably connected to the inner wall of the mounting groove. One end of the bidirectional threaded rod passes through two sliders in sequence and is fixedly connected to a first bevel gear. The two sliders are threadedly connected to the bidirectional threaded rod. A rotating rod is rotatably connected to one side of the first mounting plate. One end of the rotating rod extends into the mounting groove and is fixedly connected to a second bevel gear. The second bevel gear meshes with the first bevel gear. A rotating plate is fixedly connected to the end of the rotating rod away from the mounting groove. A stop assembly for preventing the rotating rod from rotating back is provided on the outer wall of the mounting groove at one end of the rotating rod. When it is necessary to adjust the height of the cutting tool, the connecting rod is moved first, and the connecting rod drives along the sliding groove. The push plate moves, causing the cutting tool to move along the inner wall of the L-shaped plate. After adjusting the length of the cutting tool extension, the rotating plate is rotated. The rotating plate drives the rotating rod to rotate, which in turn drives the second bevel gear to rotate. Since the second bevel gear is meshed with the first bevel gear, the rotation of the second bevel gear drives the rotation of the first bevel gear, which in turn drives the rotation of the double-threaded rod. The rotation of the double-threaded rod causes two sliders symmetrically arranged on the outer wall to move towards each other. The movement of the two sliders pushes the adjusting block upward, which in turn moves the cutting tool upward. The height of the cutting tool can be adjusted simply by rotating the rotating plate, making the operation convenient and easy.

[0016] Preferably, the stop assembly includes a threaded groove on the outer wall of the mounting slot extending from one end of the rotating rod, and a nut is threaded onto the outer wall of the threaded groove. After the height of the cutting tool is adjusted, the nut is rotated, and the thread moves along the threaded groove on the outer wall of the rotating rod. When one side of the nut abuts against the outer wall of the first mounting plate, the rotating rod cannot rotate, and consequently the second bevel gear cannot rotate, and consequently the first bevel gear cannot rotate. Since the first bevel gear cannot rotate, the bidirectional threaded rod will not rotate, and consequently the slider will not move. Since the slider does not move, the adjusting block will not move, and ultimately the cutting tool will not move, thus ensuring the accuracy of the cutting tool height adjustment.

[0017] Preferably, the upper surface of the support frame is provided with a plurality of T-shaped grooves, and a T-shaped slider is slidably connected in the T-shaped groove. The end of the T-shaped slider away from the T-shaped groove is fixedly connected to the L-shaped plate. The cooperation between the T-shaped block and the T-shaped groove enables the L-shaped plate to move synchronously with the movement of the adjusting block and the cutting tool, and also makes the movement of the L-shaped plate more stable.

[0018] Preferably, there are four mounting slots, which are evenly distributed in a circular array on the upper surface of the first mounting plate. The number of mounting slots is four, which allows four different tools to be placed at the same time, meeting the processing needs of different types of parts, and improving processing efficiency while being highly adaptable.

[0019] Preferably, the inner wall of the mounting groove is symmetrically provided with guide grooves, and guide blocks matching the guide grooves are fixedly connected to both sides of the adjusting block; this ensures that the adjusting block can move vertically up and down stably within the mounting groove, thereby ensuring the accuracy of the tool height adjustment. Attached Figure Description

[0020] Figure 1 This is a plan view of a CNC lathe with adjustable tool height, which is part of this utility model patent.

[0021] Figure 2 This is a structural diagram of the tool post of a CNC lathe that facilitates the adjustment of the tool height, which is the subject of this utility model patent.

[0022] Figure 3 This is a top view of the first mounting plate of a CNC lathe that facilitates the adjustment of the cutting tool height, as per this utility model patent.

[0023] Figure 4 This is a structural diagram of an L-shaped plate for a CNC lathe that facilitates adjustment of the cutting tool height, as per this utility model patent.

[0024] Figure 5 This is a top view of the mounting slot of a CNC lathe that facilitates the adjustment of the cutting tool height, as per this utility model patent.

[0025] Figure 6 This is a cross-sectional view of the first mounting plate of a CNC lathe that facilitates the adjustment of the cutting tool height, as per this utility model patent.

[0026] Figure 7 This is a structural diagram of the drive assembly of a CNC lathe with adjustable tool height, which is part of this utility model patent.

[0027] Figure 8 This is a schematic diagram of the slider structure of a CNC lathe that facilitates the adjustment of the cutting tool height, which is part of this utility model patent.

[0028] The reference numerals in the accompanying drawings of the instruction manual include: 1. Lathe body; 2. Moving seat; 3. First mounting plate; 4. Lathe tool; 5. Support frame; 6. Second mounting plate; 7. T-shaped slide; 8. T-shaped slider; 9. L-shaped plate; 10. Push plate; 11. Slide; 12. Connecting rod; 13. Mounting groove; 14. Double-threaded rod; 15. First bevel gear; 16. Slider; 17. Adjusting block; 18. Rotating rod; 19. Second bevel gear; 20. Rotating plate; 21. Nut; 22. Threaded groove; 23. Guide groove; 24. Guide block. Detailed Implementation

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

[0030] like Figures 1-8As shown, a CNC lathe with adjustable tool height includes a lathe body 1 and a movable seat 2 mounted on the lathe. A first mounting plate 3 is provided on the upper surface of the movable seat 2, and several cutting tools 4 are placed on the first mounting plate 3. A support frame 5 is provided on the upper surface of the first mounting plate 3, and a second mounting plate 6 is provided on the upper surface of the support frame 5. Several T-shaped grooves 7 are formed on the upper surface of the support frame 5, and T-shaped sliders 8 are slidably connected within the T-shaped grooves 7. One end of the T-shaped slider 8 away from the T-shaped groove 7 is fixedly connected to an L-shaped plate 9. The L-shaped plate 9 is slidably connected to the outer wall of the support frame 5. The cutting tools 4 are located between the inner side of the L-shaped plate 9 and the support frame 5. A push plate 10 is slidably connected within the L-shaped plate 9. A groove 11 is formed on one side of the L-shaped plate 9, and a connecting plate 10 is fixedly connected to one side of the push plate 10. Rod 12, one end of which extends into a groove 11 and is slidably connected to the groove 11. The upper surface of the first mounting plate 3 has several mounting grooves 13, four in total. These four mounting grooves 13 are evenly distributed in a circular array on the upper surface of the first mounting plate 3. Slider blocks 16 are symmetrically arranged inside each mounting groove 13. Adjusting blocks 17 are mounted on each slider 16. The cross-section of the slider 16 is a right-angled triangle, and the cross-section of the adjusting block 17 is an isosceles trapezoid. The inclined surfaces of the two sliders 16 abut against the inclined surfaces on both sides of the adjusting block 17. The mutual compression between the inclined surfaces of the two sliders 16 and the two inclined surfaces of the adjusting block 17 causes the adjusting block 17 to rise. Simultaneously, the force exerted by the inclined surfaces of the two sliders 16 on the inclined surfaces of the adjusting block 17 is also increased. The uniformity of the height adjustment makes the adjustment block 17 rise more stably, thus making the height adjustment of the cutting tool 4 more precise. The adjustment block 17 is slidably connected within the mounting groove 13. The inner wall of the mounting groove 13 is symmetrically provided with guide grooves 23. Guide blocks 24 that match the guide grooves 23 are fixedly connected to both sides of the adjustment block 17. A drive assembly for driving the slider 16 to move the adjustment block 17 is provided within the mounting groove 13. The drive assembly includes a bidirectional threaded rod 14 rotatably connected to the inner wall of the mounting groove 13. One end of the bidirectional threaded rod 14 passes through two sliders 16 in sequence and is fixedly connected to a first bevel gear 15. The two sliders 16 are threadedly connected to the bidirectional threaded rod 14. A rotating rod 18 is rotatably connected to one side of the first mounting plate 3. One end of the rotating rod 18 extends into the mounting groove 13 and... A second bevel gear 19 is fixedly connected to the first bevel gear 15. A rotating plate 20 is fixedly connected to the end of the rotating rod 18 away from the mounting groove 13. The height of the cutting tool 4 can be adjusted simply by rotating the rotating plate 20, making operation convenient and easy. A stop assembly is provided on the outer wall of the mounting groove at one end of the rotating rod 18 to prevent rotation. The stop assembly includes a threaded groove 22 on the outer wall of the mounting groove at one end of the rotating rod 18. A nut 21 is threaded onto the outer wall of the threaded groove 22. Through the cooperation between the threaded groove 22 and the nut 21, tightening the nut 21 prevents the rotating rod 18 from rotating, thus preventing the second bevel gear 19 from rotating, and consequently preventing the first bevel gear 15 from rotating.If the first bevel gear 15 cannot rotate, the bidirectional threaded rod 14 will not rotate, and consequently, the slider 16 will not move. If the slider 16 does not move, the adjusting block 17 will not move, and ultimately, the cutting tool 4 will not move, ensuring the accuracy of the cutting tool 4 height adjustment. The lower end faces of both the cutting tool 4 and the L-shaped plate 9 abut against the upper end face of the adjusting block 17.

[0031] As can be seen from the above, the specific embodiments of this utility model are as follows:

[0032] When adjusting the height of the cutting tool 4, first place the cutting tool 4 inside the L-shaped plate 9, with one end of the cutting tool 4 abutting against one side of the push plate 10. Move the connecting rod 12, which drives the push plate 10 to move along the inner wall of the push plate 10 along the slide groove 11. When the cutting tool 4 extends to the appropriate length, loosen the nut 21, and then rotate the rotating plate 20. The rotating plate 20 drives the rotating rod 18 to rotate, which in turn drives the first bevel gear 15, which is fixed at one end, to rotate. Since the first bevel gear 15 is meshed with the second bevel gear 19, the rotation of the first bevel gear 15 drives the second bevel gear 19 to rotate, which in turn drives the double-sided threaded rod 14, which is fixed on one side, to rotate. Since the two sliders 16 are threadedly connected to the double-sided threaded rod, the rotation of the double-sided threaded rod 14 drives the two sliders 16 to move towards each other. When the two sliders 16 move towards each other, since the inclined surfaces of the sliders 16 abut against the inclined surfaces on both sides of the adjusting block 17, the two sliders 16 will simultaneously press upward against the adjusting block 17. When the adjusting block 17 moves upward in the mounting groove 13, it will drive the guide blocks 24 fixed on both sides to move upward along the guide groove 23. At the same time, when the adjusting block 17 moves upward, it will push the cutting tool 4 and the L-shaped plate 9 to move upward synchronously. The upward movement of the L-shaped plate will drive the push plate 10 and the connecting rod 12 to move upward. At the same time, the upward movement of the L-shaped plate will also drive the T-shaped slider fixed on the outer wall to move along the T-shaped slide groove. After the height of the cutting tool 4 is adjusted, the nut 21 is tightened. At this time, the rotating rod 18 is fixed, and the first bevel gear 15 and the second bevel gear 19 cannot rotate. Therefore, the bidirectional threaded rod 14 cannot rotate. If the bidirectional threaded rod 14 cannot rotate, the slider 16 cannot move. If the slider 16 cannot move, the adjusting block 17 cannot move. Finally, the cutting tool 4 cannot move upward. (The rotating head at the top of the rotating positioning stud moves the positioning stud to the bottom end and contacts the upper surface of the cutting tool at the bottom end under the cooperation of the threaded hole, so as to position the cutting tool). The part in parentheses is the prior art cited, which is not described in detail in this application.

[0033] The above descriptions are merely embodiments of this utility model, and common knowledge regarding specific structures and characteristics is not elaborated upon here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the structure of this utility model, and these should also be considered within the scope of protection of this utility model. These modifications will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application shall be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A numerical control lathe facilitating the adjustment of the height of the turning tool, comprising a lathe body and a moving seat (2) arranged on the lathe, the upper end face of the moving seat (2) is provided with a first mounting plate (3), a plurality of turning tools (4) are placed on the first mounting plate (3), the upper end face of the first mounting plate (3) is provided with a support frame (5), the upper end face of the support frame (5) is provided with a second mounting plate (6), characterized in that, An L-shaped plate (9) is slidably connected to the outer wall of the support frame (5). The cutting tool (4) is located between the inner side of the L-shaped plate (9) and the support frame (5). A push plate (10) is slidably connected inside the L-shaped plate (9). A groove (11) is provided on one side of the L-shaped plate (9). A connecting rod (12) is fixedly connected to one side of the push plate (10). One end of the connecting rod (12) extends out of the groove (11) and is slidably connected to the groove (11). The first mounting plate (3) The upper end face is provided with several mounting slots (13), and sliders (16) are symmetrically arranged in the mounting slots (13). An adjusting block (17) is provided on the slider (16). The adjusting block (17) is slidably connected in the mounting slot (13). A driving component for driving the slider (16) to move the adjusting block (17) is installed in the mounting slot (13). The lower end face of the cutting tool (4) and the L-shaped plate (9) abuts against the upper end face of the adjusting block (17).

2. The CNC lathe with adjustable tool height according to claim 1, characterized in that, The cross-section of the slider (16) is a right triangle, and the cross-section of the adjusting block (17) is an isosceles trapezoid. The inclined surfaces of the two sliders (16) abut against the inclined surfaces on both sides of the adjusting block (17).

3. The CNC lathe with adjustable tool height according to claim 1, characterized in that, The drive assembly includes a bidirectional threaded rod (14) rotatably connected to the inner wall of the mounting groove (13). One end of the bidirectional threaded rod (14) passes through two sliders (16) in sequence and is fixedly connected to a first bevel gear (15). The two sliders (16) are threadedly connected to the bidirectional threaded rod (14). A rotating rod (18) is rotatably connected to one side of the first mounting plate (3). One end of the rotating rod (18) extends into the mounting groove (13) and is fixedly connected to a second bevel gear (19). The second bevel gear (19) meshes with the first bevel gear (15). A rotating plate (20) is fixedly connected to the end of the rotating rod (18) away from the mounting groove (13). A stop assembly for preventing the rotating rod (18) from rotating is provided on the outer wall of the mounting groove (13) extending out of the rotating rod (18).

4. The CNC lathe with adjustable tool height according to claim 3, characterized in that, The stop assembly includes a threaded groove (22) extending from one end of the rotating rod (18) into the outer wall of the mounting groove (13), and a nut (21) is threadedly connected to the outer wall of the threaded groove (22).

5. The CNC lathe with adjustable tool height according to claim 4, characterized in that, The upper surface of the support frame (5) is provided with several T-shaped grooves (7), and a T-shaped slider (8) is slidably connected in the T-shaped groove (7). The end of the T-shaped slider (8) away from the T-shaped groove (7) is fixedly connected to the L-shaped plate (9).

6. The CNC lathe with adjustable tool height according to claim 1, characterized in that, The number of mounting slots (13) is four, and the four mounting slots (13) are evenly distributed in a circular array on the upper surface of the first mounting plate (3).

7. The CNC lathe with adjustable tool height according to claim 4, characterized in that, The inner wall of the mounting groove (13) is symmetrically provided with guide grooves (23), and the two sides of the adjusting block (17) are fixedly connected with guide blocks (24) that match the guide grooves (23).

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