Automatic loading and unloading device for bolt CNC lathe

Abstract

The invention discloses an automatic loading and unloading device for a bolt CNC lathe, comprising a controller (1), a discharge-blowing assembly, and a loading and unloading assembly, characterized in that: the controller (1) and the discharge-blowing assembly are mounted on an external frame (19) of the CNC lathe, the loading and unloading assembly is mounted on a main shaft and a feed carriage of the CNC lathe, the discharge-blowing assembly is composed of a discharge machine (3), a rotary lifting assembly, and a temporary storage pipe (17), the rotary lifting assembly comprises a rotary cylinder (20), a lifting cylinder (21) and an L-shaped bracket (5), the two rods of the L-shaped bracket (5) are respectively mounted with a vacuum joint (4) and an air pipe joint (6), a temporary storage pipe (17) is mounted below the L-shaped bracket (5), the discharge-blowing assembly and the loading and unloading assembly are connected via an air pipe, and the controller (1) is designed by a touch screen and PLC programming. The invention is efficient, feasible, and easy to operate, and is suitable for the promotion and use of automatic loading and unloading of bolt CNC lathes.

Description

Technical Field

[0001] The invention belongs to the technical field of bolt processing, and in particular relates to an automatic loading and unloading device for a bolt CNC lathe. Background Art

[0002] Aviation bolts are key products used for fastening connections in military and civilian aircraft and engines, and their reliability directly affects the safety and life of aircraft equipment. In the manufacturing process of aviation bolts, due to the particularity of aviation titanium alloys and high-temperature alloy materials, after cold and warm upsetting, the bolt head and rod are strengthened to varying degrees. In order to obtain precise processing dimensions and ensure dimensional consistency, the processing methods of aviation bolts and civilian fastener bolts are essentially different. The latter process basically adopts CNC lathe turning technology, and more and more people use turning instead of grinding to process special-shaped forming surfaces. Due to the large batch of aviation bolt products, it is necessary to fully consider how to improve production efficiency while meeting technical requirements.

[0003] At present, there are two main ways of turning aviation bolts on CNC lathes. One is the traditional manual assisted loading and unloading method, that is, the CNC lathe spindle positioning and clamping bolts for turning. This method requires manual loading of the bolts into the spindle elastic clamp spring (the processing part is the bolt head), or into the elastic bushing (the processing part is the bolt rod) and then into the spindle elastic clamp spring to clamp the bolts. After ensuring reliable clamping, start the turning process and take them out in sequence after the turning is completed. This manual loading and unloading method is inefficient and labor-intensive for workers. The other is to cancel the spindle elastic clamp spring and use a hydraulic two-jaw chuck for clamping. Due to the special nature of aviation bolt materials, soft jaws are used to prevent the two-jaw chuck from damaging the product appearance. When processing batch products, although the robot is used for auxiliary clamping, the robot action simulates the slow clamping speed of human hands, and the soft jaws wear and cause positioning deviation, and the product defective rate is high, so it cannot truly meet the requirements of aviation bolt processing accuracy and production efficiency. Summary of the invention

[0004] The purpose of the present invention is to overcome the above-mentioned shortcomings and provide an automatic loading and unloading device for a bolt CNC lathe which has a simple structure, high efficiency and feasibility, precision and stability, and convenient operation.

[0005] The purpose of the present invention and the solution of its main technical problems are achieved by adopting the following technical solutions:

[0006] The automatic loading and unloading device of a bolt CNC lathe of the present invention comprises a controller, a discharge-blowing assembly, and a loading and unloading assembly, wherein: the controller and the discharge-blowing assembly are installed on the external frame of the CNC lathe, the loading and unloading assembly is installed on the main shaft and feed carriage of the CNC lathe, the discharge-blowing assembly is composed of a discharge machine, a rotating lifting assembly, and a temporary storage tube for parts, the rotating lifting assembly comprises a rotating cylinder, a lifting cylinder, and an L-shaped bracket, the two rods of the L-shaped bracket are respectively installed with a vacuum joint and an air pipe joint, the lower part of the vacuum joint is connected to a vacuum suction nozzle, a temporary storage tube for parts is installed below the L-shaped bracket, the temporary storage tube for parts is connected to a fixed frame, and the rotating cylinder and the lifting cylinder drive the L-shaped bracket to cooperate to complete The parts are transported from the position of the discharge machine to the parts temporary storage tube. The discharge of the bolt head and the bolt can be achieved by changing the airflow direction of the parts temporary storage tube; the discharge-blowing component and the upper and lower material components are connected by air pipes. The upper and lower material components include two parts: the spindle clamping and the carriage feeding. The carriage feeding part is composed of a base A and a base B. The base B is equipped with a nozzle. The base A is equipped with a feeding rod and a material return component. The material return component is equipped with a cylinder push rod; the spindle clamping part is composed of a high-speed rotary joint and a spindle chuck. The high-speed rotary joint and the hollow positioning core rod in the spindle chuck are connected by a connecting hose; the controller adopts a touch screen and PLC programming design to control the action instructions of each link.

[0007] The above-mentioned automatic loading and unloading device for bolt CNC lathe, wherein: the inside of the clamping nozzle is arranged with an inner tapered hole.

[0008] The above-mentioned automatic loading and unloading device for bolt CNC lathe, wherein: a vacuum gauge is installed on the controller.

[0009] Compared with the prior art, the present invention has obvious advantages and beneficial effects. It can be seen from the above technical scheme that in the automatic loading and unloading device of the bolt CNC lathe of the present invention, the controller and the discharge-blowing assembly are installed on the external frame of the CNC lathe, and the loading and unloading assembly is installed on the main shaft and feed slide of the CNC lathe. The discharge-blowing assembly is composed of a discharge machine, a rotating lifting assembly, and a temporary storage tube for parts. The rotating lifting assembly includes a rotating cylinder, a lifting cylinder and an L-shaped bracket. The two rods of the L-shaped bracket are respectively installed with a vacuum joint and an air pipe joint. The lower part of the vacuum joint is connected to a vacuum suction nozzle for sucking the bolt head; the rotating cylinder and the lifting cylinder drive the L-shaped bracket to cooperate to complete the transportation of the parts from the fixed position of the discharge machine to the temporary storage tube, which is stable. It is stable and reliable; by changing the airflow direction of the parts temporary storage tube, the bolt parts can be discharged in two directions (i.e., the bolt head and the rod); by connecting the air pipe of the discharge blowing assembly and the loading and unloading assembly, the bolt is blown to the loading and unloading assembly base A or base B on the slide of the CNC lathe to realize the processing of the bolt head or the rod; the spindle clamping part is composed of a high-speed rotary joint, a connecting hose and a spindle chuck (with a hollow positioning core rod), which can realize the clamping of the bolt rod and the transition flange, complete the vacuum suction and positive pressure blowing actions, and effectively realize the separation of rotation and external installation when the spindle rotates, and ensure the suction and blowing actions are correct. In short, the present invention has a simple structure, high efficiency and feasibility, precision and stability, and convenient operation, and is suitable for the promotion and use of automatic loading and unloading of bolt CNC lathes. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a schematic diagram of the structure of the present invention.

[0011] Markings in the figure:

[0012] 1. Controller; 2. Vacuum gauge; 3. Discharge machine; 4. Vacuum joint; 5. L-shaped bracket; 6. Air pipe joint; 7. Air pipe A; 8. Base A; 9. Base B; 10. Air pipe B; 11. Clamp nozzle; 12. Spindle chuck; 13. Connecting hose; 14. High-speed rotary joint; 15. Feed rod; 16. Cylinder push rod; 17. Parts temporary storage tube; 18. Fixed frame; 19. Rack; 20. Rotating cylinder; 21. Lifting cylinder. DETAILED DESCRIPTION

[0013] The following is a detailed description of the specific implementation method, structure, characteristics and functions of the automatic loading and unloading device for bolt CNC lathe proposed by the present invention in combination with the accompanying drawings and preferred embodiments.

[0014] See also Figure 1The automatic loading and unloading device of a bolt CNC lathe of the present invention comprises a controller 1, a discharge-blowing assembly, and a loading and unloading assembly, wherein: the controller 1 and the discharge-blowing assembly are installed on the external frame 19 of the CNC lathe, the loading and unloading assembly is installed on the main shaft and feed carriage of the CNC lathe, the discharge-blowing assembly is composed of a discharge machine 3, a rotating lifting assembly, and a temporary storage tube 17 for parts, the rotating lifting assembly comprises a rotating cylinder 20, a lifting cylinder 21 and an L-shaped bracket 5, the two rods of the L-shaped bracket 5 are respectively installed with a vacuum joint 4 and a trachea joint 6, the lower part of the vacuum joint 4 is connected to a vacuum suction nozzle, a temporary storage tube 17 for parts is installed below the L-shaped bracket 5, the temporary storage tube 17 for parts is connected to the fixed frame 18, the rotating cylinder 20 and the lifting cylinder 21 drive the L-shaped bracket 5 to cooperate completely The parts are transported from the position of the discharge machine 3 to the temporary storage tube 17 of the parts. The discharge of the bolt head and the bolt can be realized by changing the airflow direction of the temporary storage tube 17. The discharge-blowing assembly and the upper and lower material assembly are connected by air pipes. The upper and lower material assembly includes two parts: the spindle clamping and the carriage feeding. The carriage feeding part is composed of a base A8 and a base B9. The base B9 is equipped with a nozzle 11. The base A8 is equipped with a feeding rod 15 and a material removal assembly. The material removal assembly is equipped with a cylinder push rod 16. The spindle clamping part is composed of a high-speed rotary joint 14 and a spindle chuck 12. The high-speed rotary joint 14 and the hollow positioning core rod in the spindle chuck 12 are connected by a connecting hose 13. The controller 1 adopts a touch screen and PLC programming design to control the action instructions of each link. The inside of the nozzle 11 is set as an inner cone hole. The controller 1 is equipped with a vacuum gauge 2.

[0015] When in use, the controller 1 and the discharge-blowing assembly are installed on the external frame 19 of the CNC lathe, and the loading and unloading assemblies are installed on the spindle and feed slide of the CNC lathe. The rotating cylinder 20 and the lifting cylinder 21 drive the L-shaped bracket 5 to cooperate to transport the parts from the position of the discharge machine 3 to the parts temporary storage tube 17. By changing the airflow direction of the parts temporary storage tube 17, the bolt head and bolt can be discharged.

[0016] When machining the bolt head, the material is loaded using the nozzle 11 installed on the base B9. At this time, the rod of the bolt extends out through the inner tapered hole of the nozzle 11, the spindle moves to the machining position, the spindle clamps the bolt rod and pulls it out, and the turning of the bolt head can begin. After the turning process is completed, the air is blown out by the internal suction pipe of the spindle chuck 12 to complete the unloading.

[0017] When machining the bolt shank, the material is loaded using the feeding rod 15 installed on the base A8. At this time, the spindle moves to the machining position, the part is blown into the spindle, the head is sucked by the internal suction rod, and the flange is pushed into the spindle for clamping, and the bolt shank turning can begin. After the turning is completed, the material removal assembly moves to the machining position, the bolt and flange are taken out, and the bolt is pushed out by the cylinder push rod 16 to realize material unloading.

[0018] The invention has the advantages of simple structure, high efficiency, feasibility, precision and stability, and convenient operation, and is suitable for the popularization and use of automatic loading and unloading of bolt CNC lathes.

[0019] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Any simple modification, equivalent change and modification made to the above embodiment according to the technical essence of the present invention without departing from the technical solution of the present invention still falls within the scope of the technical solution of the present invention.

Claims

1. An automatic loading and unloading device for a bolt CNC lathe, comprising a controller (1), a discharge-blowing assembly, and a loading and unloading assembly, wherein the loading and unloading assembly comprises a spindle clamping part and a carriage feeding part, wherein the carriage feeding part comprises a base A (8) and a base B (9), and wherein: The controller (1) and the material discharging-blowing assembly are installed on the external frame (19) of the CNC lathe. The loading and unloading assembly is installed on the main shaft and feed carriage of the CNC lathe. The material discharging-blowing assembly is composed of a material discharging machine (3), a rotating lifting assembly, and a temporary storage pipe (17). The rotating lifting assembly includes a rotating cylinder (20), a lifting cylinder (21) and an L-shaped bracket (5). The bottom of the lifting cylinder (21) is installed on the external frame (19) of the CNC lathe. The movable end of the lifting cylinder (21) is connected to the rotating cylinder (20). The movable end of the rotating cylinder (20) is connected to the L-shaped bracket (5). A temporary storage pipe (17) is installed below the L-shaped bracket (5). The temporary storage pipe (17) is connected to a fixed frame (18). The bottom of the fixed frame (18) is fixedly installed on the external frame (19) of the CNC lathe. The part temporary storage tube (17) is connected to the base A (8) and the base B (9) through the air pipe A (7) and the air pipe B (10) respectively. The two rods of the L-shaped bracket (5) are respectively installed with a vacuum joint (4) and an air pipe joint (6). The lower part of the vacuum joint (4) is connected with a vacuum suction nozzle, which is used to absorb the bolts output by the discharge machine (3). The rotating cylinder (20) and the lifting cylinder (21) cooperate to drive the L-shaped bracket (5) to rise and fall and rotate so that the vacuum suction nozzle and the air pipe joint are alternately connected to the part temporary storage tube (17), thereby completing the transportation of the parts from the position of the discharge machine (3) to the part temporary storage tube (17). By changing the air flow direction of the part temporary storage tube (17), the bolt head can be discharged. The material and bolt rod are discharged; the discharge-blowing assembly and the upper and lower material assemblies are connected by air pipes, a clamping nozzle (11) is installed on the base B (9), a feeding rod (15) and a material return assembly are installed on the base A (8), and a cylinder push rod (16) is installed on the material return assembly; the spindle clamping part includes a high-speed rotary joint (14) and a spindle chuck (12), and the high-speed rotary joint (14) and the hollow positioning core rod in the spindle chuck (12) are connected by a connecting hose (13); the controller (1) adopts a touch screen and PLC programming design to control the action instructions of each link; When machining the bolt head, the chuck (11) mounted on the base B (9) is used for loading. At this time, the bolt shank extends out through the inner tapered hole of the chuck (11). The spindle moves to the machining position, and the spindle clamps the bolt shank and pulls it outward to start turning the bolt head. After the turning process is completed, the material is blown out through the air pipe inside the spindle chuck (12), and the material is unloaded. When machining the bolt shank, the material is loaded using the feeding rod (15) mounted on the base A (8). At this time, the spindle moves to the machining position, the part is blown into the spindle, the head is sucked by the internal suction rod, and the flange is pushed into the spindle for clamping. Then, the turning of the bolt shank can begin. After the turning is completed, the material removal assembly moves to the machining position, the bolt and flange are taken out, and the bolt is pushed out by the cylinder push rod (16) to realize the unloading.

2. The automatic loading and unloading device for bolt CNC lathe according to claim 1, characterized in that: The interior of the clamping nozzle (11) is arranged as an inner tapered hole.

3. The automatic loading and unloading device for bolt CNC lathe according to claim 1, characterized in that: The controller (1) is equipped with a vacuum gauge (2).

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