Pneumatic shell quick boring device

Abstract

The utility model belongs to the field of shell processing equipment, concretely relates to a kind of quick boring device of pneumatic shell, including barrel base, the top of barrel base is fixedly connected with mounting plate, and mounting hole is passed through on mounting plate, and the top of mounting plate is fixedly connected with the guide cylinder corresponding with mounting hole, and lifting seat is slidably connected on guide cylinder along vertical direction, and reset spring and sliding limit component are connected between guide cylinder and lifting seat, and the top of lifting seat is equipped with the positioning slot passing through its upper and lower ends, and rotating drive mechanism is installed at the bottom of mounting plate, and boring cutter is connected on the output shaft of rotating drive mechanism, and positioning slot and boring cutter are corresponding up and down.The utility model is by being installed in the positioning slot to shell, and boring operation of shell can be realized by pressing shell downwards, on the one hand, simple, convenient to operate, effectively improve production efficiency;On the other hand, the overall structure of device is simple, and it is made, need not to use expensive numerical control lathe, effectively reduce production cost.

Description

Technical Field

[0001] This utility model relates to a pneumatic rapid boring device for cartridge cases, belonging to the field of cartridge case processing equipment. Background Technology

[0002] The grenade casing is a fundamental component of a hand grenade. Its function is to connect the projectile, primer, and propellant, making them a unified whole. This ensures the entire grenade is securely positioned within the chamber, prevents the propellant from being affected by external conditions, and prevents propellant gases from escaping from the breech and directly ablating the chamber during firing. During the manufacturing process of a hand grenade casing, boring is required. In existing technology, boring of hand grenade casings typically involves using a standard three-jaw chuck or elastic clamp to hold the workpiece, and then boring the casing on a CNC lathe. On the one hand, because the casing has a curved shape, multiple position adjustments are required during clamping, and the lathe spindle must be stopped when picking up and placing the casing, which is time-consuming and labor-intensive, resulting in low production efficiency. On the other hand, using a CNC lathe for machining increases production costs. Utility Model Content

[0003] In view of the shortcomings of the prior art, the technical problem to be solved by this utility model is to provide a pneumatic cartridge case rapid boring device that can improve production efficiency and reduce production costs.

[0004] The pneumatic cartridge case rapid boring device of this utility model includes a cylindrical base, a mounting plate fixedly connected to the top of the cylindrical base, a mounting hole through the mounting plate, a guide cylinder corresponding to the mounting hole fixedly connected to the top of the mounting plate, a lifting seat slidably connected to the guide cylinder in the vertical direction, a return spring and a sliding limit assembly connected between the guide cylinder and the lifting seat, a positioning groove through the upper and lower ends of the lifting seat, a rotary drive mechanism installed at the bottom of the mounting plate, a boring tool connected to the output shaft of the rotary drive mechanism, and the positioning groove corresponding to the boring tool vertically.

[0005] Furthermore, the rotary drive mechanism is a pneumatic motor, and a through hole is provided on the cylindrical base.

[0006] Furthermore, the bottom of the boring bar is provided with a mounting shaft, which is fixedly connected to the output shaft of the rotary drive mechanism via a coupling.

[0007] Furthermore, the bottom of the lifting seat is provided with a guide hole corresponding to the positioning groove, and the guide hole is slidably adapted to the guide cylinder.

[0008] Furthermore, a step is provided in the central hole of the guide cylinder, and the return spring is installed between the bottom of the guide hole and the step.

[0009] Furthermore, the sliding limit assembly includes at least one set of strip-shaped limit holes disposed on the lifting seat and a limit slider connected to the guide cylinder, wherein the strip-shaped limit holes and the limit slider are slidably adapted to each other.

[0010] Furthermore, the limiting slider is threadedly connected to the guide cylinder.

[0011] The advantages of this utility model compared with the prior art are: The pneumatic cartridge case rapid boring device of this utility model uses a pneumatic motor to drive the boring tool to rotate. By installing the cartridge case in the positioning groove and pressing the cartridge case down, the boring operation of the cartridge case can be realized. On the one hand, the operation is simple and convenient, which effectively improves production efficiency; on the other hand, the overall structure of the device is simple and easy to manufacture, without the need to use expensive CNC lathes, which effectively reduces production costs. Attached Figure Description

[0012] Figure 1 This is a cross-sectional view of the present invention; Figure 2 This is a cross-sectional view of the mounting plate of this utility model; Figure 3 This is a cross-sectional view of the guide cylinder of this utility model; Figure 4 This is a cross-sectional view of the lifting seat of this utility model.

[0013] In the diagram: 1. Cylindrical base; 2. Through-hole; 3. Pneumatic motor; 4. Mounting plate; 5. Coupling; 6. Mounting shaft; 7. Guide cylinder; 8. Return spring; 9. Boring tool; 10. Lifting seat; 11. Positioning groove; 12. Guide hole; 13. Strip-shaped limit hole; 14. Limiting slider; 15. Mounting hole; 16. Step. Detailed Implementation

[0014] The embodiments of this utility model will be further described below with reference to the accompanying drawings: Example 1: like Figure 1 As shown, the pneumatic cartridge case rapid boring device of this utility model includes a cylindrical base 1, a mounting plate 4 fixedly connected to the top of the cylindrical base 1, a mounting hole 15 penetrating the mounting plate 4, a guide cylinder 7 corresponding to the mounting hole 15 fixedly connected to the top of the mounting plate 4, a lifting seat 10 slidably connected to the guide cylinder 7 in the vertical direction, a return spring 8 and a sliding limit assembly connected between the guide cylinder 7 and the lifting seat 10, a positioning groove 11 penetrating the upper and lower ends of the lifting seat 10, a rotary drive mechanism installed at the bottom of the mounting plate 4, a boring tool 9 connected to the output shaft of the rotary drive mechanism, and the positioning groove 11 corresponding to the boring tool 9 vertically.

[0015] In use, the rotating drive mechanism drives the boring bar 9 to rotate continuously. The cartridge case to be bored is then installed in the positioning groove 11 on the lifting seat 10. The positioning groove 11 positions and clamps the cartridge case. Then, downward pressure is applied to the inserted cartridge case. Under the sliding connection between the guide cylinder 7 and the lifting seat 10, the lifting seat 10 and the cartridge case overcome the elastic force of the return spring 8 and move downward synchronously, so that the rotating boring bar 9 enters the cartridge case blank for boring. The sliding limit component can limit the stroke of the lifting seat 10. Then, the downward pressure is withdrawn. Under the action of the return spring 8, the lifting seat 10 drives the cartridge case to return to its original position, so that the cartridge case is disengaged from the boring bar 9, and then the cartridge case can be removed. The cartridge case is clamped by the positioning groove 11 that matches the outer contour of the cartridge case, which is convenient to operate. Moreover, the boring bar 9 does not need to be stopped when the cartridge case is picked up or put down, which effectively improves production efficiency.

[0016] Example 2: like Figures 1 to 4 As shown, based on Example 1, Furthermore, the rotary drive mechanism is a pneumatic motor 3, which has good explosion-proof performance and uses compressed air as a power source, without generating dangerous factors such as sparks, overheating, or explosion; the pneumatic motor 3 can drive the boring tool 9 to rotate, and the cylindrical base 1 has a through hole 2 for inserting an air tube.

[0017] Furthermore, the bottom of the boring bar 9 is provided with a mounting shaft 6, which is fixedly connected to the output shaft of the rotary drive mechanism via a coupling 5. The boring bar 9 can be disassembled by removing the coupling 5, thereby facilitating the maintenance and replacement of the boring bar 9.

[0018] Furthermore, the bottom of the lifting seat 10 is provided with a guide hole 12 corresponding to the positioning groove 11. The guide hole 12 is slidably adapted to the guide cylinder 7, which has a simple structure and stable operation.

[0019] Furthermore, a step 16 is provided in the center hole of the guide cylinder 7, and the reset spring 8 is installed between the bottom of the guide hole 12 and the step 16, which has a simple structure and stable operation.

[0020] Furthermore, the sliding limit assembly includes at least one set of strip-shaped limit holes 13 disposed on the lifting seat 10 and limit sliders 14 connected to the guide cylinder 7. The strip-shaped limit holes 13 and the limit sliders 14 are slidably adapted to each other, resulting in a simple structure and stable operation.

[0021] Furthermore, the limiting slider 14 is threadedly connected to the guide cylinder 7, which facilitates the installation and replacement of the limiting slider 14.

Claims

1. A pneumatic rapid boring device for cartridge cases, characterized in that: The device includes a cylindrical base (1), a mounting plate (4) is fixedly connected to the top of the cylindrical base (1), a mounting hole (15) is passed through the mounting plate (4), a guide cylinder (7) corresponding to the mounting hole (15) is fixedly connected to the top of the mounting plate (4), a lifting seat (10) is slidably connected to the guide cylinder (7) in the vertical direction, a reset spring (8) and a sliding limit assembly are connected between the guide cylinder (7) and the lifting seat (10), a positioning groove (11) is provided on the top of the lifting seat (10) and passes through its upper and lower ends, a rotary drive mechanism is installed on the bottom of the mounting plate (4), a boring bar (9) is connected to the output shaft of the rotary drive mechanism, and the positioning groove (11) corresponds to the boring bar (9) vertically.

2. The pneumatic cartridge case rapid boring device according to claim 1, characterized in that: The rotary drive mechanism is a pneumatic motor (3), and a through hole (2) is provided on the cylindrical base (1).

3. The pneumatic cartridge case rapid boring device according to claim 1, characterized in that: The bottom of the boring bar (9) is provided with a mounting shaft (6), and the mounting shaft (6) is fixedly connected to the output shaft of the rotary drive mechanism through a coupling (5).

4. The pneumatic cartridge case rapid boring device according to any one of claims 1 to 3, characterized in that: The bottom of the lifting seat (10) is provided with a guide hole (12) corresponding to the positioning groove (11), and the guide hole (12) is slidably adapted to the guide cylinder (7).

5. The pneumatic cartridge case rapid boring device according to claim 4, characterized in that: The guide cylinder (7) has a step (16) in the center hole, and the reset spring (8) is installed between the bottom of the guide hole (12) and the step (16).

6. The pneumatic cartridge case rapid boring device according to claim 4, characterized in that: The sliding limit assembly includes at least one set of strip-shaped limit holes (13) disposed on the lifting seat (10) and limit sliders (14) connected to the guide cylinder (7), with the strip-shaped limit holes (13) and the limit sliders (14) being slidably adapted to each other.

7. The pneumatic cartridge case rapid boring device according to claim 6, characterized in that: The limiting slider (14) is threadedly connected to the guide cylinder (7).

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