Adjustable tool of universal numerical control lathe

Abstract

The utility model discloses an adjustable tool of a universal numerical control lathe, which comprises an assembling seat, a sliding groove is arranged on the periphery of the top side of the assembling seat, L-shaped clamping plates are arranged in the sliding groove in a sliding mode, movable grooves are arranged at the horizontal ends of two groups of symmetrically arranged L-shaped clamping plates, extending plates are arranged in the movable grooves in a sliding mode, and T-shaped screw sleeves are fixedly connected with the inner sides of the extending plates. And a screw rod in screwed connection with the screw sleeve is rotationally mounted on the assembly seat. According to the device, firstly, a round hole workpiece is internally supported till an L-shaped clamping plate abuts against the hole wall of a short shaft of an oval hole, then a second motor drives a worm to rotate forwards, the worm drives a worm gear to drive a transmission shaft and a driving bevel gear to rotate, and then driven bevel gears on the two sides are driven to drive screws on the two sides to rotate; and then the threaded sleeve is driven to drive the extending plate to move outwards till the extending plate abuts against the hole wall of the long shaft of the oval hole, the oval hole workpiece is internally supported, positioned and clamped, and the universality of the device is improved.

Description

Technical Field

[0001] This utility model relates to the field of lathe tooling technology, and in particular to an adjustable tooling for a general-purpose CNC lathe. Background Technology

[0002] Lathe fixtures refer to the various jigs and devices used for fixing, clamping, positioning, supporting and assisting cutting operations on CNC lathes. They are an indispensable part of the CNC lathe machining process, and their quality and performance directly affect the machining quality and production efficiency.

[0003] When machining external surfaces, internal supports are typically used to secure the workpiece to prevent collisions between the fixture and the cutting tool, which could damage the tool. However, while existing internal support fixtures can accommodate cylindrical workpieces of varying diameters, they struggle to provide effective internal support positioning and clamping when dealing with workpieces with elliptical inner holes, demonstrating their limited versatility. Utility Model Content

[0004] The purpose of this utility model is to provide an adjustable tooling for a general-purpose CNC lathe in order to solve the technical problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] An adjustable fixture for a general-purpose CNC lathe includes an assembly base. The top side of the assembly base has a sliding groove around its perimeter. An L-shaped clamping plate is slidably arranged within the groove. Two sets of symmetrically arranged L-shaped clamping plates have movable grooves on their horizontal ends. Extension plates are slidably arranged within the movable grooves. T-shaped threaded sleeves are fixedly connected to the inner side of the extension plates. A screw rod, which engages with the threaded sleeve, is rotatably mounted on the assembly base. Guide rods passing through both sides of the horizontal end of the threaded sleeve are fixedly connected to the sliding groove. The horizontal ends of the L-shaped clamping plates have clearance grooves to accommodate the screw rod, extension plates, guide rods, and threaded sleeve.

[0007] As a further description of the above technical solution:

[0008] The free ends of the screws on both sides are fixedly fitted with driven bevel gears, and a drive shaft is rotatably mounted on the partition. A drive bevel gear that meshes with the driven bevel gears on both sides is fixedly fitted on the drive shaft. The screw threads on both sides have opposite directions of rotation.

[0009] As a further description of the above technical solution:

[0010] A first motor is fixedly installed on the partition plate, a worm gear is fixedly sleeved on the transmission shaft, and the output shaft of the first motor is connected to a worm that meshes with the worm gear.

[0011] As a further description of the above technical solution:

[0012] A second motor is fixedly installed on the mounting base. A rotating plate is fixedly sleeved on the output shaft of the second motor. An arc-shaped linkage groove extending from the outside to the inside is opened on the rotating plate. A round rod is slidably connected in the linkage groove. An waist-shaped groove is opened on the partition plate to accommodate the round rod passing through. The round rod is fixedly connected to an L-shaped clamping plate.

[0013] As a further description of the above technical solution:

[0014] The top of the assembly base has a square groove that communicates with the slide groove. A square rod is slidably arranged in the square groove, and the two ends of the square rod are fixedly connected to a round rod and an L-shaped clamp, respectively.

[0015] As a further description of the above technical solution:

[0016] The vertical end and extension plate of the L-shaped clamp are both arc-shaped plates.

[0017] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:

[0018] 1. In this utility model, when internally supporting an elliptical hole workpiece, the workpiece with a round hole is first internally supported until the L-shaped clamping plate abuts against the hole wall on the short axis of the elliptical hole. Then, the second motor drives the worm gear to rotate forward, and the worm gear drives the worm wheel to drive the transmission shaft and the active bevel gear to rotate. According to the gear meshing transmission principle, the driven bevel gears on both sides drive the screws on both sides to rotate. According to the thread transmission principle, the screw sleeve drives the extension plate to move outward until the extension plate abuts against the hole wall on the long axis of the elliptical hole, thus internally supporting, positioning, and clamping the elliptical hole workpiece, improving the versatility of this device.

[0019] 2. In this utility model, the rotating plate is driven to rotate clockwise by the second motor. Under the linkage of the linkage groove and the slide rod, the driving square rod drives the L-shaped clamping plate to move outward synchronously, so as to perform internal support positioning and clamping for the round hole workpiece. Attached Figure Description

[0020] Figure 1 A schematic diagram of the internal structure of an adjustable fixture for a general-purpose CNC lathe according to an embodiment of the present invention is shown.

[0021] Figure 2 It shows Figure 1 Enlarged view of point A in the middle;

[0022] Figure 3 A cross-sectional schematic diagram of an L-shaped clamp provided according to an embodiment of the present utility model is shown;

[0023] Figure 4 A cross-sectional schematic diagram of the assembly base provided according to an embodiment of the present utility model is shown;

[0024] Figure 5 A three-dimensional structural schematic diagram of an adjustable tooling for a general-purpose CNC lathe provided according to an embodiment of the present invention is shown.

[0025] Legend:

[0026] 1. Assembly base; 101. Slide groove; 102. Square groove; 103. Waist-shaped groove; 2. L-shaped clamp; 201. Movable groove; 202. Relief groove; 3. Screw; 4. Driven bevel gear; 5. Driven bevel gear; 6. Drive shaft; 7. Worm gear; 8. First motor; 9. Worm; 10. Square rod; 11. Round rod; 12. Rotating plate; 1201. Linkage groove; 13. Second motor; 14. Extension plate; 15. Guide rod; 16. Screw sleeve. Detailed Implementation

[0027] 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 skilled in the art without creative effort are within the protection scope of the present utility model.

[0028] Please see Figure 1-5 This utility model provides a technical solution: an adjustable fixture for a general-purpose CNC lathe, including an assembly base 1. A sliding groove 101 is provided around the top side of the assembly base 1. An L-shaped clamping plate 2 is slidably arranged within the sliding groove 101. The vertical end of the L-shaped clamping plate 2 is an arc-shaped plate. A second motor 13 is fixedly installed on the assembly base 1. A rotating plate 12 is fixedly sleeved on the output shaft of the second motor 13. An arc-shaped linkage groove 1201 extending from the outside to the inside is provided on the rotating plate 12. A round rod 11 is slidably connected within the linkage groove 1201. An oblong groove 103 is provided on the partition plate to accommodate the passage of the round rod 11. The round rod 11 is fixedly connected to the L-shaped clamping plate 2. A square groove 102 communicating with the sliding groove 101 is provided at the top of the assembly base 1. A square rod 10 is slidably arranged within the square groove 102 to improve the stability of the movement of the L-shaped clamping plate 2. The two ends of the square rod 10 are fixedly connected to the round rod 11 and the L-shaped clamping plate 2, respectively. The second motor 13 drives the rotating plate 12 to rotate clockwise. Under the linkage of the linkage groove 1201 and the slide rod 11, the driving square rod 10 drives the L-shaped clamping plate 2 to move outward synchronously, so as to perform internal support positioning and clamping for the round hole workpiece.

[0029] Specifically, such as Figure 1-3As shown, two sets of symmetrically arranged L-shaped clamps 2 have movable grooves 201 on their horizontal ends. An arc-shaped extension plate 14 is slidably arranged in the movable groove 201. A T-shaped threaded sleeve 16 is fixedly connected to the inner side of the extension plate 14. A screw 3 that is screwed into the threaded sleeve 16 is rotatably installed on the mounting base 1. A guide rod 15 that passes through both sides of the horizontal end of the threaded sleeve 16 is fixedly connected to the sliding groove 101. A clearance groove 202 is opened on the horizontal end of the L-shaped clamp 2 to accommodate the screw 3, extension plate 14, guide rod 15 and threaded sleeve 16, ensuring that the movement of the L-shaped clamp 2 is not interfered with. A driven bevel gear 4 is fixedly sleeved on the free end of the screw 3 on both sides. A transmission shaft 6 is rotatably installed on the partition. A driving bevel gear 5 that meshes with the driven bevel gear 4 on both sides is fixedly sleeved on the transmission shaft 6. The threads of the screw 3 on both sides are opposite. A first motor 8 is fixedly installed on the partition. A worm gear 7 is fixedly sleeved on the transmission shaft 6. The output shaft of the first motor 8 is driven by a worm 9 that meshes with the worm gear 7. When internally supporting an elliptical hole workpiece, first perform internal support as with a round hole workpiece until the front and rear L-shaped clamps 2 (according to...). Figure 1 The worm gear 9 (in the direction shown) abuts against the hole wall on the short axis of the elliptical hole. Then, the second motor 8 drives the worm gear 9 to rotate forward. The worm gear 9 drives the worm wheel 7 to drive the transmission shaft 6 and the driving bevel gear 5 to rotate. According to the gear meshing transmission principle, the driven bevel gears 4 on both sides drive the screws 3 on both sides to rotate. According to the thread transmission principle, the screw sleeve 16 drives the extension plate 14 to move outward until the extension plate 14 abuts against the hole wall on the long axis of the elliptical hole, thus providing internal support, positioning and clamping for the elliptical hole workpiece, improving the versatility of this device.

[0030] Working principle: When in use, firstly, the workpiece with the round hole is internally supported and positioned. The rotating plate 12 is driven to rotate clockwise by the second motor 13. Under the linkage of the linkage groove 1201 and the slide rod 11, the square rod 10 drives the L-shaped clamping plate 2 to move outward synchronously until the L-shaped clamping plate 2 abuts against the hole wall.

[0031] Secondly, when internally supporting an elliptical hole workpiece, first perform internal support as with a round hole workpiece until the front and rear L-shaped clamps 2 (according to...). Figure 1 The worm gear 9 (in the direction shown) abuts against the hole wall on the short axis of the elliptical hole. Then, the second motor 8 drives the worm gear 9 to rotate forward. The worm gear 9 drives the worm wheel 7 to drive the transmission shaft 6 and the driving bevel gear 5 to rotate. According to the gear meshing transmission principle, the driven bevel gears 4 on both sides drive the screws 3 on both sides to rotate. According to the thread transmission principle, the screw sleeve 16 drives the extension plate 14 to move outward until the extension plate 14 abuts against the hole wall on the long axis of the elliptical hole, thus providing internal support, positioning and clamping for the elliptical hole workpiece, improving the versatility of this device.

[0032] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An adjustable fixture for a general-purpose CNC lathe, comprising an assembly base (1), characterized in that, The mounting base (1) has a sliding groove (101) around its top side. An L-shaped clamp (2) is slidably arranged in the sliding groove (101). Two sets of symmetrically arranged L-shaped clamps (2) have movable grooves (201) on their horizontal ends. An extension plate (14) is slidably arranged in the movable groove (201). A T-shaped threaded sleeve (16) is fixedly connected to the inner side of the extension plate (14). A screw (3) that is screwed into the threaded sleeve (16) is rotatably installed on the mounting base (1). A guide rod (15) that passes through both sides of the horizontal end of the threaded sleeve (16) is fixedly connected to the sliding groove (101). A clearance groove (202) is opened on the horizontal end of the L-shaped clamp (2) to accommodate the screw (3), extension plate (14), guide rod (15) and threaded sleeve (16).

2. The adjustable fixture for a general-purpose CNC lathe according to claim 1, characterized in that, The free ends of the screws (3) on both sides are fixedly fitted with driven bevel gears (4), and a drive shaft (6) is rotatably mounted on the partition. The drive shaft (6) is fixedly fitted with a driving bevel gear (5) that meshes with the driven bevel gears (4) on both sides. The screw threads on both sides of the screws (3) have opposite directions.

3. The adjustable fixture for a general-purpose CNC lathe according to claim 2, characterized in that, A first motor (8) is fixedly installed on the partition plate, and a worm gear (7) is fixedly sleeved on the transmission shaft (6). The output shaft of the first motor (8) is connected to a worm (9) that meshes with the worm gear (7).

4. The adjustable fixture for a general-purpose CNC lathe according to claim 3, characterized in that, A second motor (13) is fixedly installed on the mounting base (1). A rotating plate (12) is fixedly sleeved on the output shaft of the second motor (13). An arc-shaped linkage groove (1201) extending from the outside to the inside is opened on the rotating plate (12). A round rod (11) is slidably connected in the linkage groove (1201). An waist-shaped groove (103) is opened on the partition to accommodate the round rod (11) passing through. The round rod (11) is fixedly connected to the L-shaped clamp (2).

5. The adjustable fixture for a general-purpose CNC lathe according to claim 4, characterized in that, The top of the mounting base (1) is provided with a square groove (102) that communicates with the slide groove (101). A square rod (10) is slidably arranged in the square groove (102). The two ends of the square rod (10) are fixedly connected to a round rod (11) and an L-shaped clamp (2) respectively.

6. The adjustable fixture for a general-purpose CNC lathe according to claim 5, characterized in that, The vertical end of the L-shaped clamp (2) and the extension plate (14) are both arc-shaped plates.

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