Accurate tool adjusting mechanism for automatic lathe

Abstract

The utility model relates to lathe tool field discloses an automatic lathe precision tool adjusting mechanism, including the handle of knife, the outer wall fixedly connected with the tool bit of handle, the outside of tool bit is provided with the tool rest, the inner wall screw thread connection of tool rest has the fastening bolt, the outer wall screw thread connection of fastening bolt has the thread ring, the bottom end rotationally connected with the connecting plate of thread ring, the bottom hinged of connecting plate has the compression plate, the outer wall of tool rest is equipped with the inclined groove, the inner wall fixedly connected with rubber pad of inclined groove, the outer wall of tool rest is equipped with the through groove. In the utility model, the cooperation of inclined groove and rubber pad realizes the preliminary antiskid and self -adaptation deformation of handle, utilizes the stable locking of thread transmission and compression plate structure, and the handle is accurately pushed and is inclined through the through groove, and the process is maintained smoothly by rubber pad, improves the convenience, stability and precision of tool inclination adjustment.

Description

Technical Field

[0001] This utility model relates to the field of lathe cutting tools, and in particular to a precision tool adjustment mechanism for automatic lathes. Background Technology

[0002] An automatic lathe is a highly automated machine tool that controls the entire process of feeding, clamping, cutting, and cutting through a preset program. Workers only need to load the material and start the machine to continuously process a large number of precision small parts. Its cutting tools are fixed on the tool holder and perform various cutting actions such as turning the outer diameter, drilling, tapping, cutting, and shaping on the high-speed rotating raw material according to the program instructions. Different types of cutting tools or drills work together to process metal or plastic bars into complex and precise shapes such as screws, shafts, and connectors.

[0003] A search revealed Chinese Patent Publication No. CN215199674U, which discloses an adjustment structure for lathe cutting tools and a lathe thereof. The adjustment component is mounted on a frame and drives a fixed block to move back and forth on a slide rail. The cutting tool is mounted on the fixed block at a fixed position. The adjustment component then drives the fixed block to slide along the slide rail of the frame, allowing for position adjustment of the cutting tool on the adjustment structure. This improves the convenience of tool adjustment. In use, the frame is simply fixed to the lathe. The adjustment structure enhances the adaptability of cutting tools on the lathe and provides flexible adjustment.

[0004] In the above-mentioned scheme, the linear movement adjustment of the tool is achieved through the adjusting component and the fixed block. Its adjustment freedom is singular, limited to feed compensation in one dimension. However, when it is necessary to change the cutting angle of the tool head or to perform complex inclined surface machining, this structure cannot provide the tool axis runout, i.e., the freedom of tilting and radial rotation. The operator can only rely on reclamping or replacing the special angle fixture. This not only leads to long changeover time and reduced machine adjustment efficiency, but also causes cumulative positioning error and repeated clamping error due to repeated disassembly and assembly, which seriously reduces the machining accuracy and the consistency of batch parts, and ultimately affects the product yield. Therefore, an automatic lathe precision tool adjustment mechanism is proposed to solve the above problems. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a precision tool adjustment mechanism for automatic lathes, which aims to improve the problem that the existing precision tool adjustment mechanism for automatic lathes cannot adjust the tilt of the tool, thus failing to adapt to complex machining surfaces and reducing the consistency and yield of mass production.

[0006] To achieve the above objectives, this utility model adopts the following technical solution: an automatic lathe precision tool adjustment mechanism, including a tool holder, a tool head fixedly connected to the outer wall of the tool holder, a tool post provided outside the tool head, a fastening bolt threadedly connected to the inner wall of the tool post, a threaded ring threadedly connected to the outer wall of the fastening bolt, a connecting plate rotatably connected to the bottom end of the threaded ring, a pressure plate hinged to the bottom of the connecting plate, an oblique groove formed on the outer wall of the tool post, a rubber pad fixedly connected to the inner wall of the oblique groove, a through groove formed on the outer wall of the tool post, a sliding groove formed on the outer wall of the tool post, a slider slidably connected to the outer wall of the sliding groove, an adjusting roller fixedly connected to the outer wall of the slider, a screw hole formed on the outer wall of the tool post, a positioning bolt threadedly connected to the inner wall of the screw hole, a connecting block threadedly connected to the outer wall of the positioning bolt, a rectangular block fixedly connected to the outer wall of the connecting block, a rectangular groove formed at the end of the adjusting roller, and an adjustment assembly provided at the bottom of the tool post.

[0007] As a further description of the above technical solution: The outer wall of the knife handle is adapted to the inner wall of the inclined groove, and the through groove is sleeved on the outer wall of the adjusting roller.

[0008] As a further description of the above technical solution: The rectangular groove is formed on the outer wall of the end of the adjusting roller away from the slider, and the inner wall of the rectangular groove is adapted to the outer wall of the rectangular block.

[0009] As a further description of the above technical solution: The adjustment assembly includes an adjustment disc, the outer wall of which has a fixing hole, the inner wall of which is threaded with a fixing bolt, and the outer wall of which is threaded with a fixing bracket.

[0010] As a further description of the above technical solution: The top of the adjusting plate is rotatably connected to the bottom of the tool holder, and the outer wall of the fixing frame is fixedly connected to the outer wall of the tool holder.

[0011] As a further description of the above technical solution: The bottom of the adjusting plate is fixedly connected to a slide, the outer wall of the slide is provided with a support base, the outer wall of the support base is provided with a slot, the inner wall of the slot is rotatably connected to a screw, the end of the screw is fixedly connected to a knob, and the inner wall of the slot is fixedly connected to a baffle.

[0012] As a further description of the above technical solution: The outer wall of the screw is threadedly connected to the inner wall of the slide block via a nut sleeve, and the outer wall of the slide block is adapted to the inner wall of the slot.

[0013] As a further description of the above technical solution: The baffle passes through the slide and is slidably connected to the inner wall of the slide.

[0014] This utility model has the following beneficial effects: 1. In this utility model, the stepless adjustment of the tool holder angle is achieved through the precise cooperation of the inclined groove and the adjusting roller. During operation, the damping feeling is uniform and the positioning is intuitive. First, the bolt is tightened to press the tool holder, and then the positioning bolt locks the adjustment mechanism through a double locking mechanism, which ensures reasonable force flow transmission and optimal overall rigidity. The 180-degree rotatable structure of the tool holder also realizes the rapid switching between dual workstations, which significantly improves the assembly and adjustment efficiency, processing adaptability and equipment stability.

[0015] 2. In this utility model, the 180-degree rotation function of the tool holder enables rapid switching between dual workstations, greatly improving the adaptability of tool changing and machining. The newly added precision fine-tuning mechanism, through the combination of screw drive and baffle guide, ensures that the tool holder drives the tool holder to move accurately and stably in the horizontal direction, effectively eliminating gaps and enhancing system rigidity, making the overall operation both efficient and reliable, and meeting the stringent requirements for positioning and stability in high-precision machining. Attached Figure Description

[0016] Figure 1 This is a side view of the main structure of an automatic lathe precision tool adjustment mechanism proposed in this utility model; Figure 2 This is a bottom view schematic diagram of the main structure of an automatic lathe precision tool adjustment mechanism proposed in this utility model; Figure 3 This is an exploded top view of the main structure of an automatic lathe precision tool adjustment mechanism proposed in this utility model; Figure 4 This utility model proposes a precision tool adjustment mechanism for an automatic lathe. Figure 3 Enlarged view of region A in the middle; Figure 5 This is a top view schematic diagram of a partial structure of an automatic lathe precision tool adjustment mechanism proposed in this utility model; Figure 6 This is a partial side view of the structure of an automatic lathe precision tool adjustment mechanism proposed in this utility model.

[0017] Legend: 1. Tool holder; 2. Tool head; 3. Tool holder; 4. Fastening bolt; 5. Threaded ring; 6. Connecting plate; 7. Pressure plate; 8. Angled groove; 9. Rubber pad; 10. Through groove; 11. Sliding groove; 12. Sliding block; 13. Adjusting roller; 14. Screw hole; 15. Positioning bolt; 16. Connecting block; 17. Rectangular groove; 18. Rectangular block; 19. Adjusting plate; 20. Fixing hole; 21. Fixing bracket; 22. Fixing bolt; 23. Support base; 24. Groove opening; 25. Knob; 26. Screw; 27. Baffle; 28. Slide seat. Detailed Implementation

[0018] 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.

[0019] Reference Figures 1-3This utility model provides an embodiment of a precision tool adjustment mechanism for an automatic lathe, comprising a tool holder 1, a tool head 2 fixedly connected to the outer wall of the tool holder 1, a tool holder 3 disposed outside the tool head 2, a fastening bolt 4 threadedly connected to the inner wall of the tool holder 3, a threaded ring 5 threadedly connected to the outer wall of the fastening bolt 4, a connecting plate 6 rotatably connected to the bottom end of the threaded ring 5, and a clamping plate 7 hinged to the bottom of the connecting plate 6, allowing the clamping plate 7 to adjust its clamping posture according to the curvature of the outer wall of the tool holder 1, ensuring a tight fit with the outer wall of the tool holder 1. An inclined groove 8 is formed on the outer wall of the tool holder 3, the outer wall of the tool holder 1 being adapted to the inner wall of the inclined groove 8, and a rubber pad 9 fixedly connected to the inner wall of the inclined groove 8. The rubber pad 9 can deform when the tool holder 1 is tilted, and the material... The material itself has anti-slip properties that help stabilize the tilt of the tool holder 1. A through groove 10 is provided on the outer wall of the tool holder 3. The direction of the through groove 10 is consistent with that of the inclined groove 8, allowing the adjusting roller 13 to move along the through groove 10 inside the inclined groove 8. This allows the adjusting roller 13 to contact different positions of the tool holder 1, changing its tilt orientation. A sliding groove 11 is provided on the outer wall of the tool holder 3. A slider 12 is slidably connected to the outer wall of the sliding groove 11. The adjusting roller 13 is fixedly connected to the outer wall of the slider 12. The through groove 10 is fitted onto the outer wall of the adjusting roller 13. The inclined design of the inclined groove 8 provides a unique and preset trajectory reference for the sway of the tool holder 1. The adjusting roller 13, as an actuator, has its outer cylindrical surface connected to the outer cylindrical surface of the tool holder 1 through the through groove 10. A line contact is formed. When the sliding slider 12 moves, the adjusting roller 13 moves along the trajectory of the inclined groove 8. The force of the line contact can be decomposed into a component force that pushes the tool holder 1 to slide along the inclined groove 8, and a normal component force that compresses the rubber pad 9 to undergo elastic deformation. The elastic deformation of the rubber pad 9 allows and adapts to the displacement of the tool holder 1. At the same time, its inherent high coefficient of friction and damping characteristics provide the necessary motion resistance during the adjustment process, realizing stepless, smooth and anti-vibration fine adjustment function, effectively avoiding position overshoot caused by rigid impact. This is the first guarantee for "precise" adjustment. The outer wall of the tool holder 3 is provided with screw holes 14. Several sets of screw holes 14 are provided, and the several sets of screw holes 14 are equidistant according to the inclination of the inclined groove 8. The adjusting roller 13 can be fixed in different positions within the inclined groove 8 by connecting the positioning bolt 15 to the screw holes 14 at different positions. The inner wall of the screw hole 14 is threaded with the positioning bolt 15, and the outer wall of the positioning bolt 15 is threaded with the connecting block 16. The outer wall of the connecting block 16 is fixedly connected with the rectangular block 18. The end of the adjusting roller 13 is provided with a rectangular groove 17, which is opened on the outer wall of the end of the adjusting roller 13 away from the slider 12 to avoid interference with the sliding function of the slider 12 and to ensure that the force on both ends of the adjusting roller 13 is balanced. The inner wall of the rectangular groove 17 is adapted to the outer wall of the rectangular block 18 to ensure that the rectangular block 18 can be tightly embedded in the rectangular groove 17 and to prevent the adjusting roller 13 from rotating after being fixed.

[0020] Reference Figures 4-6The bottom of the tool holder 3 is equipped with an adjustment assembly, which includes an adjustment disc 19, a fixing hole 20, a fixing bracket 21, and a fixing bolt 22. The angle of the tool holder 3 can be adjusted and locked through the coordinated action of each component. The top of the adjustment disc 19 is rotatably connected to the bottom of the tool holder 3, so that the tool holder 3 can rotate around the central axis of the adjustment disc 19 to adjust the angle of the tool holder 3. The outer wall of the adjustment disc 19 is provided with a fixing hole 20, and the inner wall of the fixing hole 20 is threadedly connected to the fixing bolt 22. The outer wall of the fixing bolt 22 is threadedly connected to the fixing bracket 21. The outer wall of the fixing bracket 21 is fixedly connected to the outer wall of the tool holder 3 to ensure that the fixing bracket 21 moves synchronously with the tool holder 3 and to ensure the stability of the angle fixation.

[0021] Reference Figures 1-3 The bottom of the adjusting plate 19 is fixedly connected to a slide 28, so that the adjusting plate 19 can move synchronously with the slide 28 to adjust the horizontal position of the tool holder 3. The outer wall of the screw 26 is threadedly connected to the inner wall of the slide 28 through a nut sleeve, converting the rotational motion of the screw 26 into the linear motion of the slide 28, so as to achieve precise adjustment in the horizontal direction. The outer wall of the slide 28 is provided with a support seat 23, and the outer wall of the support seat 23 has a slot 24. The outer wall of the slide 28 is adapted to the inner wall of the slot 24. The inner wall of the slot 24 is rotatably connected to the screw 26, and the end of the screw 26 is fixedly connected to a knob 25. The inner wall of the slot 24 is fixedly connected to a baffle 27, which passes through the slide 28 and slides with the inner wall of the slide 28, further improving the guiding nature of the slide 28 and ensuring that the slide 28 always moves in a straight line.

[0022] Working principle: During assembly, the operator first inserts the tool handle 1 into the inclined groove 8 of the tool holder 3. At this time, the tool handle 1 is in its natural initial position under the support of gravity and the rubber pad 9. The operator slightly loosens the fastening bolt 4 to release the first clamping force and slowly pushes the slider 12 with their finger, allowing it to slide along the slide groove 11. The adjusting roller 13, which is fixed to the slider 12, moves accordingly, and its cylindrical surface contacts the rear side of the tool handle 1 and begins to apply a pushing force. Due to the constraint of the through groove 10, the movement trajectory of the adjusting roller 13 is completely consistent with the inclination of the inclined groove 8. During the pushing process, the operator can feel the uniform damping from the rubber pad 9, and the position of the tool handle 1 can be changed steplessly. By observing the relative position of the cutter head 2 and the workpiece, the required angle can be determined. After the angle is initially determined, tighten the fastening bolt 4 thoroughly so that the clamping plate 7 presses the cutter handle 1 firmly. Then, screw the positioning bolt 15 into the screw hole 14 closest to this position until you hear or feel the rectangular block 18 click and fully embed it into the bottom of the rectangular groove 17. At this point, it indicates that the second locking has been completed. This sequence ensures that the adjustment mechanism is locked after the tool holder 1 is locked, resulting in a reasonable force transmission path and optimal overall rigidity. When the inclined tool holder 1 is not needed, first disconnect the fixing hole 20 from the fixing bolt 22, apply force to the tool holder 3 to rotate it 180 degrees, install the second set of tool holders 1 on the tool holder 3 without the inclined groove 8, and fix the second set of tool holders 1 with the fastening bolt 4 at this position. Then, screw the fixing bolt 22 into the fixing hole 20 to position the tool holder 3. Finally, turn the knob 25 on the support base 23. The knob 25 drives the screw 26 in the slot 24 to rotate synchronously. The screw 26 drives the slide 28 to slide along the slot 24 through the threaded transmission with the nut sleeve on the inner wall of the slide 28. During this process, the baffle 27 in the slot 24 passes through the slide 28 and slides with the inner wall of the slide 28, providing stable guidance for the slide 28 and ensuring that the tool holder 3 and the tool holder 1 move accurately in the horizontal direction.

[0023] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A precision tool adjustment mechanism for an automatic lathe, comprising a tool holder (1), wherein a tool head (2) is fixedly connected to the outer wall of the tool holder (1), and a tool holder (3) is provided on the outside of the tool head (2), characterized in that: The inner wall of the tool holder (3) is threaded with a fastening bolt (4), and the outer wall of the fastening bolt (4) is threaded with a threaded ring (5). The bottom end of the threaded ring (5) is rotatably connected to a connecting plate (6), and the bottom of the connecting plate (6) is hinged with a clamping plate (7). The outer wall of the tool holder (3) is provided with an oblique groove (8), and the inner wall of the oblique groove (8) is fixedly connected with a rubber pad (9). The outer wall of the tool holder (3) is provided with a through groove (10), and the outer wall of the tool holder (3) is provided with a sliding groove (11). A slider (12) is slidably connected to the outer wall of the slide groove (11). An adjusting roller (13) is fixedly connected to the outer wall of the slider (12). A screw hole (14) is opened on the outer wall of the tool holder (3). A positioning bolt (15) is threadedly connected to the inner wall of the screw hole (14). A connecting block (16) is threadedly connected to the outer wall of the positioning bolt (15). A rectangular block (18) is fixedly connected to the outer wall of the connecting block (16). A rectangular groove (17) is opened at the end of the adjusting roller (13). An adjusting component is provided at the bottom of the tool holder (3).

2. The precision tool adjustment mechanism for an automatic lathe according to claim 1, characterized in that: The outer wall of the knife handle (1) is adapted to the inner wall of the inclined groove (8), and the through groove (10) is sleeved on the outer wall of the adjusting roller (13).

3. The precision tool adjustment mechanism for an automatic lathe according to claim 1, characterized in that: The rectangular groove (17) is formed on the outer wall of the end of the adjusting roller (13) away from the slider (12), and the inner wall of the rectangular groove (17) is adapted to the outer wall of the rectangular block (18).

4. The precision tool adjustment mechanism for an automatic lathe according to claim 1, characterized in that: The adjustment assembly includes an adjustment disc (19), the outer wall of which is provided with a fixing hole (20), the inner wall of which is threaded with a fixing bolt (22), and the outer wall of which is threaded with a fixing bracket (21).

5. The precision tool adjustment mechanism for an automatic lathe according to claim 4, characterized in that: The top of the adjustment plate (19) is rotatably connected to the bottom of the tool holder (3), and the outer wall of the fixing frame (21) is fixedly connected to the outer wall of the tool holder (3).

6. The precision tool adjustment mechanism for an automatic lathe according to claim 4, characterized in that: The bottom of the adjusting plate (19) is fixedly connected to a slide (28), and a support seat (23) is provided on the outer wall of the slide (28). A slot (24) is opened on the outer wall of the support seat (23). A screw (26) is rotatably connected to the inner wall of the slot (24). A knob (25) is fixedly connected to the end of the screw (26). A baffle (27) is fixedly connected to the inner wall of the slot (24).

7. The precision tool adjustment mechanism for an automatic lathe according to claim 6, characterized in that: The outer wall of the screw (26) is threadedly connected to the inner wall of the slide (28) through a nut sleeve, and the outer wall of the slide (28) is adapted to the inner wall of the slot (24).

8. The precision tool adjustment mechanism for an automatic lathe according to claim 6, characterized in that: The baffle (27) passes through the slide (28) and is slidably connected to the inner wall of the slide (28).

Images