Bar loading device for a centerless lathe
By designing a bar stock feeding device with a servo motor-driven lead screw and a laser displacement sensor on a centerless lathe, the problem of fixing the feed inlet of the centerless lathe was solved, enabling adaptive processing of various screw models and sizes and improving production efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- DAYE YAGUANG HIGH STRENGTH BOLTS
- Filing Date
- 2025-07-10
- Publication Date
- 2026-07-31
AI Technical Summary
The feed inlet of existing centerless lathes is fixed, making it difficult to adapt to the machining needs of screws of different models and sizes.
A bar stock feeding device for a centerless lathe was designed. It uses a servo motor to drive the lead screw and a laser displacement sensor. The height of the support frame is adjusted to meet the processing requirements of different screw sizes. Automatic adjustment is achieved by combining with a PLC controller.
It enables flexible adjustment of the feeding height to adapt to the processing needs of various screw models and sizes, thereby improving production flexibility and efficiency.
Smart Images
Figure CN224574693U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of screw manufacturing technology, specifically to a bar stock feeding device for a centerless lathe. Background Technology
[0002] Screws are commonly used connecting parts in mechanical equipment. Some large equipment has screws with relatively large diameters and lengths. These screws are mainly made from steel billet blanks. During the processing, the surface of the billet blank is usually peeled off. Currently, centerless lathes are generally used for peeling. However, the feed inlet of a centerless lathe is usually fixed. Since manufacturers need to produce screws of different models and sizes, the feed height needs to be adjusted at any time to adapt to the centerless lathe. Utility Model Content
[0003] In order to solve the problems existing in the prior art, this utility model provides a bar stock feeding device for a centerless lathe.
[0004] The specific solution of this utility model is as follows: a bar stock feeding device for a centerless lathe includes a bottom support frame and a support frame. Each end of the bottom support frame has a set of support plates. Each set of support plates includes two support plates arranged on both sides of the bottom support frame. A support rod A is rotatably connected to each support plate. A support rod B is rotatably connected to the top of each support rod A. The tops of all support rods B are rotatably connected to the support frame. A horizontally arranged connecting rod is installed at the connection point between the support rods A and B on both sides of the same end. A connecting block is provided in the middle of each of the two connecting rods. Both connecting blocks have threaded holes and are threadedly connected to a lead screw. One end of the lead screw is connected to a servo motor. Several power rollers are mounted on the support frame, arranged in a horizontal row.
[0005] Furthermore, the output end of the servo motor is connected to a reducer, and the output end of the reducer is fixedly connected to a lead screw. The servo motor and the reducer are mounted on a support beam. On both sides of the bottom support frame, corresponding to the two ends of the support beam, there is a vertical support plate. The vertical support plate is provided with a sliding groove arranged in the vertical direction, and the support beam is slidably connected to the sliding groove.
[0006] Furthermore, the bottom support frame has upwardly extending columns on both sides of the middle, and the upper end of the columns has a vertically arranged waist-shaped guide hole. The material support frame has connecting plates on both sides corresponding to the columns, and one side of the connecting plate has a limiting pin that is inserted into the waist-shaped guide hole.
[0007] Furthermore, a displacement sensor is installed on the bottom support frame. The displacement sensor is used to detect the vertical distance between the material support frame and the bottom support frame. The displacement sensor and the servo motor are connected to the PLC controller via a common signal.
[0008] Furthermore, the displacement sensor is a laser displacement sensor.
[0009] Compared with the prior art, the beneficial effects of this utility model are as follows: it can adaptively adjust the feeding height, thereby adapting to centerless lathes and meeting the needs of manufacturers to produce various types and sizes of screws. Attached Figure Description
[0010] Figure 1 This is a three-dimensional schematic diagram of the present invention; Figure 2 This is the front view of this utility model; Figure 3 yes Figure 2 AA view; Figure 4 yes Figure 2 BB view; Figure 5 yes Figure 2 CC view; In the diagram: 1. Bottom support frame; 2. Column; 3. Limit pin; 4. Connecting plate; 5. Support rod B; 6. Support rod A; 7. Support beam; 8. Servo motor; 9. Connecting block; 10. Material support frame; 11. Power roller; 12. Laser displacement sensor; 13. Lead screw; 14. Connecting rod. Detailed Implementation
[0011] like Figure 1-5 As shown, this embodiment is a bar stock feeding device for a centerless lathe, including a bottom support frame 1 and a material support frame 10. Each end of the bottom support frame 1 has a set of support plates. Each set of support plates includes two support plates on both sides of the bottom support frame 1. A support rod A6 is rotatably connected to each support plate. A support rod B5 is rotatably connected to the top of each support rod A6. The tops of all support rods B5 are rotatably connected to the material support frame 10. A horizontally arranged connecting rod 14 is installed at the connection point between the support rods A6 and B5 on both sides of the same end. A connecting block 9 is provided in the middle of each of the two connecting rods 14. Both connecting blocks 9 have threaded holes and are threadedly connected to a lead screw 13. One end of the lead screw 13 is connected to a servo motor 8. Several power rollers 11 are mounted on the material support frame 10, arranged in a horizontal row.
[0012] Furthermore, the output end of the servo motor 8 is connected to a reducer, and the output end of the reducer is fixedly connected to the lead screw 13. The servo motor 8 and the reducer are mounted on a support beam 7. The bottom support frame 1 has a vertical support plate on each side corresponding to the two ends of the support beam 7. The vertical support plate has a sliding groove arranged in the vertical direction, and the support beam is slidably connected to the sliding groove.
[0013] Furthermore, the bottom support frame 1 has upwardly extending columns 2 on both sides of the middle, and the upper end of the column 2 has a vertically arranged waist-shaped guide hole. The material support frame 10 has connecting plates 4 on both sides corresponding to the column 2, and a limiting pin 3 inserted into the waist-shaped guide hole is provided on one side of the connecting plate 4.
[0014] Furthermore, a displacement sensor is installed on the bottom support frame 1. The displacement sensor is used to detect the vertical distance between the material support frame 10 and the bottom support frame 1. The displacement sensor and the servo motor 8 are connected to the PLC controller via a common signal.
[0015] Furthermore, the displacement sensor is a laser displacement sensor 12.
[0016] The working principle of this embodiment is as follows: the bar stock is continuously fed into the feed port of the centerless lathe by the power roller 11. Usually, the feed port of the centerless lathe is equipped with a clamping roller mechanism. Therefore, the power roller 11 of this utility model only needs to feed the bar stock into the clamping roller mechanism. If there is no clamping roller mechanism, a V-shaped support roller can be installed on each power roller 11 of this utility model. The center line of the V-shaped support roller can be aligned with the vertical plane where the feed port of the centerless lathe is located. When the feeding height needs to be adjusted, the PLC controller automatically controls the servo motor 8 to rotate according to the current bar diameter and the corresponding feeding height. The servo motor 8 drives the lead screw 13 to rotate a corresponding number of turns, so that the two connecting blocks 9 synchronously translate along the axis of the lead screw 13 by a set distance. The two connecting blocks 9 drive the corresponding connecting rods 14 to move the same distance at the same time, thereby changing the angle between the support rods A6 and B5, and thus adjusting the height of the material support frame 10. During the process of raising or lowering the height of the material support frame 10, the laser displacement sensor 12 detects the vertical distance between the material support frame 10 and the bottom support frame 1 in real time. When the preset height is reached, a signal is sent to the PLC controller, and the PLC controller controls the servo motor 8 to stop immediately. At this time, the feeding height of the material support frame 10 is adjusted.
[0017] During the lifting and lowering process of the material support frame 10, the material support frame 10 is kept in the vertical direction by the cooperation of the limit pin 3 and the waist-shaped guide hole of the column 2.
Claims
1. A bar loading device for a centerless lathe, characterized by: The device includes a base support frame and a material support frame. Each end of the base support frame has a set of support plates. Each set of support plates includes two plates on either side of the base support frame. A support rod A is rotatably connected to each support plate, and a support rod B is rotatably connected to the top of each support rod A. The tops of all support rods B are rotatably connected to the material support frame. A horizontally arranged connecting rod is installed at the connection point between the support rods A and B on both sides of the same end. A connecting block is provided in the middle of each connecting rod, and each connecting block has a threaded hole. Each connecting block is threadedly connected to a lead screw, one end of which is connected to a servo motor. The material support frame is equipped with several power rollers arranged in a horizontal row.
2. The bar loading device for a centerless lathe according to claim 1, wherein: The output end of the servo motor is connected to a reducer, and the output end of the reducer is fixedly connected to a lead screw. The servo motor and the reducer are mounted on a support beam. On both sides of the bottom support frame, corresponding to the two ends of the support beam, there is a vertical support plate. The vertical support plate is provided with a sliding groove arranged in the vertical direction, and the support beam is slidably connected to the sliding groove.
3. The bar loading device for a centerless lathe according to claim 1, wherein: The bottom support frame has upward-extending columns on both sides of the middle, and the upper end of the columns has a vertically arranged waist-shaped guide hole. The material support frame has connecting plates on both sides corresponding to the columns, and one side of the connecting plate has a limiting pin that can be inserted into the waist-shaped guide hole.
4. The bar loading device for a centerless lathe according to claim 1, wherein: The bottom support frame is equipped with a displacement sensor, which is used to detect the vertical distance between the material support frame and the bottom support frame. The displacement sensor and the servo motor are connected to the PLC controller via a common signal.
5. The bar loading device for a centerless lathe according to claim 4, wherein: The displacement sensor is a laser displacement sensor.