A kind of trolley cooling motor rotor cover plate hole is used to fall hole self-return silk type drilling pedestal

Abstract

This paper proposes a self-returning drilling table for the rotor cover hole of a tram cooling motor. The main body of the drilling table is a manual bench drill. An electrical control box is located on the left side of the manual bench drill. The right outer side of the moving chuck of the manual bench drill is connected to a manual handle. The central shaft of the manual handle is connected to the center of a gear. The gear is symmetrically located on the other side of the manual handle. A rack is longitudinally fitted above the gear. The rack is connected to a cylinder. A support shaft is located below the other end of the rack. The cylinder is connected to a pressure regulating valve through an air pipe. This invention changes the original manual returning operation, improves work efficiency, allows a single person to complete a large number of continuous operations, significantly reduces the consumption of returning taps, and improves the quality of finished products. It reduces product scrap caused by manual operation and can be widely used in situations where the threads on the casing of a cylindrical machine are not in good condition after electroplating. It is a widely applicable device.

Description

Technical Field

[0001] This article belongs to the technical field of cutting table bases, specifically relating to a self-returning drilling table base for drilling holes in the rotor cover plate of a tram cooling motor. Background Technology

[0002] Cylindrical machine housings are generally made of iron plates through cold working. The stamping process creates cutting edges on the surface. Since the iron is stored and processed in the air, moisture from the air can adhere to the metal surface, causing it to rust. Finished parts also have threads to be tapped, which also creates cutting edges on the metal surface. To prevent rust, electroplating is commonly used on the finished products. Electroplating adds a coating to the previously tapped parts. This causes the threads to fail the go / no-go gauge inspection, requiring re-tapping to ensure the final thread passes the go / no-go gauge inspection.

[0003] To keep up with product demand, many products need to be manually re-threaded using taps. However, manual re-threading is limited by production conditions. Each person can only re-thread about 100 products per day. Moreover, the taps are easily damaged. Six or seven people need to be arranged to re-thread each day, which consumes a lot of manpower and taps. The re-threaded products often need to be reworked due to human factors, and the output cannot be guaranteed. Furthermore, since the re-threading is done manually, there will be certain errors, which will cause some loss of product quality and increase the cost of re-threading.

[0004] Therefore, there is an urgent need for a cylindrical casing electroplating re-threading device with high re-threading stability and relatively high re-threading efficiency. Summary of the Invention

[0005] To address the aforementioned problems, this paper proposes a self-returning drilling table for the rotor cover holes of a tram cooling motor. The main body of the drilling table is a manual bench drill. An electrical control box is located on the outer left side of the manual bench drill. The right outer side of the moving chuck of the manual bench drill is connected to a manual handle. The central shaft of the manual handle is connected to the center of a gear. The gear is symmetrically positioned on the other side of the manual handle. A rack is longitudinally fitted above the gear, and the rack is connected to a cylinder. A support shaft is located below the other end of the rack. The cylinder is connected to a pressure regulating valve via an air pipe. The other end of the pressure regulating valve is connected to a solenoid valve. Both the pressure regulating valve and the solenoid valve are located on the rear right side of the manual bench drill. The solenoid valve is connected to an air supply line via an air pipe. The spindle motor of the manual bench drill is an electrically controlled motor. A detection switch is vertically mounted on the upper middle part of the manual handle, and a limit protrusion is provided on the outer side of the manual handle. The transverse centerline section of the limit protrusion is aligned with the transverse center section of the detection switch. The pressure regulating valve, solenoid valve, detection switch, and electrically controlled motor are all connected to the inside of the electrical control box. This invention changes the original manual rewinding operation, resulting in higher work efficiency. A single person can complete a large number of continuous operations, and the consumption of rewinding taps is greatly reduced. At the same time, the quality of finished products is relatively high, reducing product scrap caused by manual operation. This invention can be widely applied to the condition of poor thread gauges on the shell after electroplating of cylindrical shells, and is a widely applicable device.

[0006] The manual bench drill is a single-axis manual displacement bench drill. The manual bench drill has a positioning and clamping mechanism under the moving chuck. The outer surface of the manual bench drill is fixed with a solenoid valve, pressure regulating valve, cylinder, support shaft, gear, detection switch and electrical control box.

[0007] The electrical control box contains a programmable logic controller (PLC), a motor speed controller, an intermediate relay, a leakage current protector, and a control panel. All components are connected via cables. The bottom of the electrical control box is connected to a foot switch via a cable, which is located under the table of the manual bench drill. Each step of the process is programmed for continuous operation. Once the product is placed in the designated position, the entire process follows the pre-programmed sequence. The resulting thread return is more accurate and meets the design requirements of the attached drawings than manually returned threads.

[0008] The cylinder is a telescopic cylinder with a movable groove at its bottom. The movable groove is connected to a rack. The cylinder's inlet and outlet are connected to a pressure regulating valve via air pipes. The rack is a strip-shaped movable rack with several parallel teeth at its bottom. The tail end of the rack has a planar support section with a horizontal bottom that is tangentially connected to a support shaft. The support shaft is axially connected to the outer side of a manual bench drill. The gear is a circular gear with the same tooth profile as the rack. The gear is connected to a manual handle via a linkage shaft, and its rotation axis is the same as that of the manual handle. Gravity is used to automatically locate the center of the thread, greatly reducing the impact of unclear thread holes caused by manual thread re-threading.

[0009] Beneficial effects:

[0010] The entire device is designed with an interlocking processing scheme. Each step is processed continuously through programming. Once the product is placed in the designated position, the entire processing will proceed according to the pre-programmed instructions. The accuracy of the thread re-threading is far superior to that of manual re-threading, and it better meets the design requirements of the attached drawings. The highlight of the re-threading process is the automatic identification of the thread center using gravity. This greatly reduces the impact of unclear thread holes caused by manual re-threading. The overall re-threading stability is relatively high, and the entire system significantly increases product quality and reduces the defect rate while ensuring production efficiency.

[0011] The entire operation process is simple: after placing the product, simply send a signal to the control box (the machine's instruction source) using a foot switch. Everything else is handled by the machine's programming system and return control system. This ensures that the technical requirements of the re-threaded product are met, thereby reducing damage to the cylindrical housing caused by manual re-threading errors. The overall yield is high, and the damage rate of the tap and cylindrical housing is relatively low. This device is widely applicable to the re-threading of wire holes after electroplating of cylindrical housings. Attached Figure Description

[0012] Figure 1 This is a schematic diagram on the right side of a self-returning drilling table for drilling holes in the rotor cover plate of a tram cooling motor.

[0013] Figure 2 This is a schematic diagram of the left side of a self-returning drilling table for drilling holes in the rotor cover plate of a tram cooling motor.

[0014] In the diagram: 1. Electric motor, 2. Solenoid valve, 3. Pressure regulating valve, 4. Cylinder, 5. Rack, 6. Support shaft, 7. Gear, 8. Manual handle, 9. Detection switch, 10. Limiting protrusion, 11. Electric control box, 12. Tooling plate, 13. Manual drill table, 14. Moving chuck. Detailed Implementation

[0015] To enhance understanding of the present invention, the invention will be further described in detail below with reference to embodiments and accompanying drawings. These embodiments are only for explaining the invention and do not constitute a limitation on the scope of protection of the invention.

[0016] 1. Electric motor, 2. Solenoid valve, 3. Pressure regulating valve, 4. Cylinder, 5. Rack, 6. Support shaft, 7. Gear, 8. Manual handle, 9. Detection switch, 10. Limiting protrusion, 11. Electric control box, 12. Tooling plate, 13. Manual drill table, 14. Moving chuck.

[0017] like Figure 1 , 2 As shown;

[0018] A self-returning drilling stand for drilling holes in the rotor cover plate of a tram cooling motor is disclosed. The main body of the drilling stand is a manual bench drill 13. An electrical control box 11 is located on the outer left side of the manual bench drill 13. The right outer side of the moving chuck 14 of the manual bench drill 13 is connected to a manual handle 8. The central axis of the manual handle 8 is connected to the center of a gear 7. The gear 7 is symmetrically arranged on the other side of the manual handle 8. A rack 5 is longitudinally fitted above the gear 7. The rack 5 is connected to a cylinder 4 at its upper end. A support shaft 6 is located below the other end of the rack 5. The cylinder 4 is connected to a pressure regulating valve 3 through an air pipe. The other end of the pressure regulating valve 3 is connected to an electromagnetic... Valve 2 is connected. Pressure regulating valve 3 and solenoid valve 2 are both located on the right rear side of manual bench drill 13. Solenoid valve 2 is connected to the air supply line via an air pipe. The spindle motor of manual bench drill 13 is an electric motor 1. A detection switch 9 is vertically mounted on the upper middle part of the manual handle 8. A limit protrusion 10 is located on the outer side of the manual handle 8. The transverse centerline section of the limit protrusion 10 is aligned with the transverse center section of the detection switch 9. Pressure regulating valve 3, solenoid valve 2, detection switch 9, and electric motor 1 are all connected to the inside of the electrical control box 11. Manual bench drill 13 is a single-axis manual displacement bench drill. The moving chuck 1 of manual bench drill 13... A positioning and clamping mechanism is provided below 4. A solenoid valve 2, a pressure regulating valve 3, a cylinder 4, a support shaft 6, a gear 7, a detection switch 9, and an electrical control box 11 are fixedly mounted on the outer surface of the manual bench drill 13. The electrical control box 11 contains a programmable controller, a motor speed controller, an intermediate relay, a leakage current protector, and a control panel. The programmable controller, motor speed controller, intermediate relay, leakage current protector, and control panel are all connected via connecting cables. The bottom of the electrical control box 11 is connected to a foot switch via a connecting cable. The foot switch is located below the table of the manual bench drill 13. The cylinder 4 is a telescopic cylinder, and its bottom is equipped with… The device has a movable groove, which is connected to the rack 5. The air inlet and outlet of the cylinder 4 are connected to the pressure regulating valve 3 through air pipes. The rack 5 is a strip-shaped movable rack 5. Several teeth are arranged parallel to each other at the bottom of the rack 5. A planar support section is provided at the tail end of the rack 5. The bottom of the planar support section is a horizontal plane. The bottom of the planar support section is tangentially connected to the support shaft 6. The support shaft 6 is axially connected to the outer side of the manual bench drill 13. The gear 7 is a circular gear 7. The tooth shape of the gear 7 is the same as that of the rack 5. The gear 7 is connected to the manual handle 8 through a linkage shaft. The rotation axis of the gear 7 is the same as the rotation axis of the manual handle 8.

[0019] Implementation example;

[0020] The product to be automatically rewinded is positioned on the tooling table and fixed with a fixture. The foot pedal switch is triggered, sending a message to the electrical control box 11 that the product has been assembled and can be processed. After receiving the processing signal from the foot pedal switch, the electrical control box 11 starts the programmable controller, motor speed controller, intermediate relay, and leakage protection device, and issues a machine tool processing command. The processing process is carried out according to the program set in the programmable controller. The machine tool is reset through the linkage device of cylinder 4, gear 7, rack 5, pressure regulating valve 3 and solenoid valve 2. The air is released by cylinder 4, which causes the moving chuck 14 to fall freely to drill, thereby automatically completing the rewinding by gravity.

[0021] When the moving chuck 14 descends to a certain position (that is, the previously set distance), the detection switch 9 detects the limit protrusion 10, indicating that it has reached the lowest position, and sends a signal to the control box 11 to end the wire return. The control box 11 then starts the programmable controller, motor speed controller, intermediate relay, leakage protection device and other linkage devices to send the machining command to the machine tool for return according to the original program. The machining process is carried out according to the program set in the programmable controller. After receiving the return command, the return control system executes the rapid return command. The electric motor 1 stops for 0.5 seconds, and then executes the rapid return. The cylinder 4 drives the rack 5 to move rapidly, thereby rotating the gear 7, so that the moving chuck 14 can complete the return (wire unwinding) in 1.5 seconds, thus completing one cycle of automatic machining.

[0022] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A self-returning drill table for drilling holes in the rotor cover plate of a tram cooling motor, suitable for re-threading after electroplating. The main body of the drill table is a manual bench drill. An electrical control box is located on the outer left side of the manual bench drill. The right outer side of the moving chuck of the manual bench drill is connected to a manual handle. The main feature is that... The central shaft of the manual handle is connected to the center of the gear. The gear is symmetrically located on the other side of the manual handle. A rack is longitudinally fitted above the gear. The rack is connected to the cylinder above. A support shaft is located below the other end of the rack. The cylinder is connected to the pressure regulating valve through an air pipe. The other end of the pressure regulating valve is connected to the solenoid valve. Both the pressure regulating valve and the solenoid valve are located on the right rear side of the manual bench drill. The solenoid valve is connected to the air supply line through an air pipe. The spindle motor of the manual bench drill is an electric motor. A detection switch is vertically mounted on the upper middle part of the manual handle. A limit protrusion is located on the outer side of the manual handle. The transverse centerline section of the limit protrusion is aligned with the transverse center section of the detection switch. The pressure regulating valve, solenoid valve, detection switch, and electric motor are all connected to the inside of the electrical control box. The cylinder is a telescopic cylinder with a moving groove at the bottom. The moving groove is connected to a rack. The cylinder's inlet and outlet are connected to a pressure regulating valve via air pipes. The rack is a strip-shaped movable rack with several teeth arranged parallel to each other at the bottom. The tail end of the rack has a planar support section. The bottom of the planar support section is a horizontal plane. The bottom of the planar support section is tangentially connected to the support shaft. The support shaft is axially connected to the outer side of the manual bench drill. The gear is a circular gear, and the tooth profile of the gear is the same as that of the rack. The gear is connected to the manual handle through a linkage shaft, and the rotation axis of the gear is the same as that of the manual handle. The electrical control box is configured to stop the electric motor for 0.5 seconds when the detection switch detects the limit protrusion, and then control the cylinder to drive the rack to return quickly to complete the unwinding action.

2. The self-returning drilling table for drilling holes in the rotor cover plate of a tram cooling motor according to claim 1, characterized in that, The manual bench drill is a single-axis manual displacement bench drill. A positioning and clamping mechanism is provided below the moving chuck of the manual bench drill. A solenoid valve, a pressure regulating valve, a cylinder, a support shaft, a gear, a detection switch, and an electrical control box are fixedly provided on the outer surface of the manual bench drill.

3. The self-returning drilling table for drilling holes in the rotor cover plate of a tram cooling motor according to claim 1, characterized in that, The electrical control box contains a programmable controller, a motor speed controller, an intermediate relay, a leakage current protector, and a control panel. The programmable controller, motor speed controller, intermediate relay, leakage current protector, and control panel are all connected by connecting cables. The bottom of the electrical control box is connected to a foot switch via a connecting cable. The foot switch is located under the table of the manual bench drill.

Images