CN112268790A

CN112268790A - Multi-shot continuous launching test platform

Info

Publication number: CN112268790A
Application number: CN202011356192.1A
Authority: CN
Inventors: 胡兴远; 王成; 李开发; 姚尚成
Original assignee: Anhui University of Science and Technology
Current assignee: Anhui University of Science and Technology
Priority date: 2020-11-26
Filing date: 2020-11-26
Publication date: 2021-01-26

Abstract

The invention provides a multi-shot continuous emission test platform, belongs to the field of shot peening, and solves the defects that shot peening equipment in a laboratory cannot meet the requirement of small material peening and the shot peening speed is not adjustable. The multi-shot continuous launching test platform comprises a shot filling device, a shot driving device and a shot launching device. The projectile is continuously provided by an open type projectile bin, the initial speed is provided by the projectile driving friction wheel, the electromagnetic accelerating coil is electrified when the projectile touches the pressure sensor, and the projectile is accelerated by forward thrust and then is shot on a sample by a magnetic field generated instantly. The initial speed of the projectile can be calculated by a related formula through the rotating speed of the driving friction wheel. The speed of the projectile exiting the launch tube can be measured by a laser speed measuring device. The angle of the sample is controlled to achieve the effect that the shot launching directions are different. The test platform can be used for shot blasting tests in laboratories and has the advantages of simplicity in installation, convenience in operation, good reliability and the like.

Description

Multi-shot continuous launching test platform

Technical Field

The invention relates to the field of shot peening, in particular to a test platform capable of realizing continuous emission of multiple shots and controllable speed and striking angle.

Background

Shot peening is a relatively traditional surface strengthening technology, and utilizes high-speed shots to continuously impact the surface of a material to enable the material to generate elastic-plastic deformation, the hardness and the wear resistance of the surface of the material are improved due to work hardening and grain refinement of a plastic deformation layer, and beneficial residual compressive stress can be formed on the surface layer and the subsurface layer of the material through resilience of elastic deformation. The surface hardness of the material is improved, and the injection of the residual compressive stress can effectively inhibit and hinder the initiation and the propagation of surface cracks.

Currently, many shot blasting devices exist in the market, and the structure of the shot blasting devices is relatively complex, so that the shot blasting devices are mostly suitable for shot blasting and strengthening of large equipment materials. The invention provides a shot peening machine which is simple in structure, small in size and capable of being used for shot peening strengthening of a small sample in a laboratory and further researching relevant changes of the sample after shot peening.

Disclosure of Invention

As described above, the blasting equipment required in the laboratory is required to be simple in structure, easy to operate, small in size and low in cost.

The technical scheme adopted by the invention for solving the technical problems is as follows:

a multi-projectile continuous launching test platform comprises a projectile filling device, a projectile driving device and a projectile launching device. The device is fixed on a truss to form a multi-projectile continuous launching test platform, four support legs of the truss can be fixed on a test bed through bolts, and a laser speed measuring device for projectiles is also fixed on a truss rod.

The bullet filling device comprises a bullet cabin, a variable speed motor, an output shaft, a bullet drive plate, a plastic buckle and a cylindrical table. The plastic button is arranged in the front of the six antennae of the pill driving plate, so that the pills can be prevented from flowing randomly to ensure accurate entering into the pill driving device. The bullet storehouse and the bullet driver plate are all installed on the cylinder table, and the rotation of bullet driver plate is realized by variable speed motor.

The projectile driving device comprises a plastic launching tube and a projectile driving friction wheel. The plastic launching tube consists of a bent tube and a long straight tube, and the bent rod plays a role in guiding and is responsible for accurately entering the projectile driving friction wheel after the projectile falls down. The left side and the right side of the long straight pipe are respectively provided with a driving friction wheel to provide initial speed for the projectile. The pill driving friction wheel consists of a silica gel wheel, a permanent magnet coil rack and a rotor shaft. The rotor shaft is used as the center, the permanent magnet coil is wound on the permanent magnet coil rack, the permanent magnet ring is wound on the permanent magnet coil, and the outermost layer is the silica gel wheel.

The projectile launching device comprises a plastic launching tube, a pressure sensor, an electromagnetic accelerating coil and an infrared generator. The accelerating coil is assembled on a long straight pipe of a plastic launching tube at the front part of the projectile driving device, and the principle of the electromagnetic accelerating coil for accelerating the projectiles is that the energizing coil generates a magnetic field to generate force action on a moving conductive object. The electromagnetic accelerating coil is not always electrified, and the electromagnetic accelerating coil is electrified to launch the projectile only when the projectile with a certain initial speed touches the bottom pressure sensor. The infrared generator can aim at the sample to achieve the purpose of hitting the sample at a fixed point.

The invention provides a miniaturized shot blasting device, the speed of the shot can be controlled by a shot driving device, and the open type magazine provides great convenience for filling the shot. The combination of the friction wheel and the electromagnetic accelerating coil is utilized to solve the problems that the power of the friction wheel is insufficient and the projectile needs a certain initial speed when passing through the electromagnetic accelerating coil. An infrared generator is added in front of the transmitting tube to play a role in auxiliary aiming, and the projectile cannot deviate when striking a sample.

Drawings

The invention will be further described with reference to the accompanying drawings.

FIG. 1 is a perspective view of the present projectile charging, driving and launching apparatus;

FIG. 2 is a top view of FIG. 1;

FIG. 3 is a perspective view of a projectile actuation friction wheel;

FIG. 4 is a top view of the projectile drive friction wheel;

fig. 5 is a perspective view of an open magazine;

FIG. 6 is a perspective view of the projectile charging, driving, launching device and open magazine;

FIG. 7 is a perspective view of a truss;

FIG. 8 is a perspective view of a multiple shot continuous launch test platform;

FIG. 9 is a top view of a multiple shot continuous launch test platform.

Referring to fig. 1 and 8: 1. shot, 2, shot driver plate, 3, plastic button, 4, bolt, 5 variable speed motor and output shaft, 6, cylinder platform, 7 silica gel friction wheel, 8, permanent magnet, 9, permanent magnet coil, 10, permanent magnet coil rack, 11, rotor shaft, 12, pressure sensor 13, electromagnetic accelerating coil, 14, plastic transmitting tube, 15, laser velocimeter, 16, infrared generator, 17, infrared generator outer frame, 18, laser velocimeter, 19, truss rod, 20, magazine, 21, fixed panel.

Detailed Description

The invention is further described below with reference to the accompanying drawings.

As shown in fig. 8, the pellet driver plate 2 and the cylindrical table 6 are mounted on the output shaft of the motor in a base hole system, and the output shaft is driven by the variable speed motor to rotate at a proper speed. The projectile rolls down the ramp of the magazine 20 and falls through the projectile catch plate 2 into the curved tube of the plastic launch tube. Wherein the magazine and the variable speed motor are welded on the fixed panel 21 of the truss.

The projectile falls into the curved tube and is given an initial velocity by the projectile drive means. As shown in fig. 3, the rotor shaft 11 of the drive unit is made in a honeycomb briquette shape to reduce its weight to ensure a quick start when energized. The permanent magnet coil rack 10 is matched with the rotor shaft 11 through a base hole, the permanent magnet coil 9 is wound on the permanent magnet coil rack 10, and the permanent magnet 8 rotates along with the rotation of the silica gel friction wheel 7. As shown in figure 1, two pellet driving friction wheels are arranged in parallel and are assembled at the opening groove of the long straight pipe. As shown in fig. 9, the rotor shaft 11 is fixed to the truss arms 19 at the lower part of the truss.

As shown in fig. 1, the pressure sensor 12 is attached to the long straight tube of the plastic launch tube and does not affect the speed of the projectile advance. The electromagnetic accelerating coil 13 is assembled in the front of the pressure sensor, and after being electrified, the bullet is forced to roll forwards quickly. The infrared generator 16 and the infrared generator outer frame 17 at the left end of the long straight pipe can be freely disassembled or assembled.

The detailed protocol is as follows: see figure 1, the projectile 1 flows out from the magazine, the variable speed motor and the output shaft 5 make the projectile drive plate 2 rotate at a set speed, the plastic buckle 3 can prevent the projectile from running out of the cylindrical table 6, so that the projectile accurately enters the launching tube 14, the projectile drive friction wheel is composed of a silica gel wheel 7, a permanent magnet 8, a permanent magnet coil 9, a permanent magnet coil rack 10 and a rotor shaft 11, the rotor friction wheel can be set to a specific rotating speed to give a certain initial speed to the projectile 1, when the projectile 1 touches the pressure sensor 12, the electromagnetic accelerating coil 13 is instantly electrified to generate a strong magnetic field, so that the projectile 1 receives thrust and then is launched at a high speed to hit the model. Wherein, the infrared generator 16 can mark the position to be hit by the sample, and the laser velometer 18 is arranged on the truss rod 19 and emits laser which passes through the laser velometer hole 15, so that the speed of the projectile which is emitted out of the launching tube can be measured.

Claims

1. a multi-projectile continuous launch test platform is characterized in that, comprising

A projectile filling device, the projectile filling device is provided with a cylindrical table, a through hole is arranged in the middle of the cylindrical table to set a motor output shaft, and the motor output shaft is arranged on a projectile dial with a middle through hole, and the projectile dial The front sections of the six antennae of the disc are provided with plastic buckles, and all the components are placed at the bottom of the magazine;

A projectile drive device, the projectile drive device is provided with a rotor shaft, the rotor shaft is matched with a permanent magnet coil frame, a permanent magnet coil is wound on the permanent magnet coil frame, and the permanent magnet coil is surrounded by a permanent magnet, and the permanent magnet coil is surrounded by a permanent magnet. The permanent magnet is attached to the inner boundary of the silicone friction wheel;

A projectile launching device, the projectile launching device is provided with a plastic launch tube, the plastic launch tube is provided with an acceleration coil, a pressure sensor is attached to the lower part of the plastic launch tube inside the acceleration coil, and a detachable front part of the plastic launch tube is provided The infrared generator outer frame is provided with a detachable infrared generator.

2. The multi-projectile continuous launch test platform according to claim 1 is characterized in that, the cylindrical platform is connected to the bottom plate in the magazine through four bolts, and the bottom plate in the magazine is welded with a panel of the truss, so The motor output shaft and the cylindrical table are matched with the base hole system, and the projectile dial and the motor output shaft are matched with the base hole system.

3. The multi-projectile continuous launch test platform according to claim 1, wherein the rotor shaft has seven through holes in the shape of honeycomb, the rotor shaft is welded on a truss rod of the truss, and the rotor shaft is connected to the permanent magnet. The coil frame is matched with the base hole system.

4 . The multi-projectile continuous launching test platform according to claim 1 , wherein the plastic launch tube is welded on the truss rod of the truss, and the plastic launch tube is composed of a curved tube and a long straight tube, and the curved tube is 4 . The entrance is below the exit of the falling projectile from the cylindrical platform, an acceleration coil is arranged at the front of the through-hole mounting groove of the long straight tube, a pressure sensor is attached to the inside of the acceleration coil, and the long straight tube is close to the end of the infrared generator. A laser tachymeter hole.