CN206192805U - High -speed high -pressure friction test machine of metal - Google Patents

Abstract

The utility model provides a high -speed high -pressure friction test machine of metal, includes the frame, the friction test machine still includes friction pulley, vertical slide and is used for placing the vertical slip table of metal sheet of awaiting measuring, the friction shaft of friction pulley with be used for driving friction pulley pivoted friction drive assembly and be connected, the friction drive assembly install on vertical slide, vertical slide with be used for driving the lifting drive component that vertical slide goes up and down and be connected, lifting drive component installs in the frame, the below of friction pulley is arranged vertical slip table, vertical slip table slidable ground suit is on vertical slide rail, vertical slide rail setting is in the frame, vertical slip table is connected with the vertical drive subassembly that is used for driving longitudinal sliding motion longitudinal movement, the friction shaft the axis with the central line of vertical slide rail is perpendicular. The utility model provides a satisfy the operating mode requirement and with low costs, the high high -speed high -pressure friction test machine of metal of stability.

Description

A metal high-speed high-pressure friction testing machine

technical field

The utility model relates to equipment for metal high-speed and high-pressure friction tests.

Background technique

Friction is the phenomenon that when two objects move relative to each other, a force that hinders the relative motion is generated between the contact surfaces. Friction is divided into static friction and dynamic friction. Tribology studies the theory of friction coefficient, wear rate and lubrication between different materials.

Metal materials are widely used in various occasions due to their high hardness, high strength and friction resistance. With the development of science and technology, the use environment of metal materials is becoming more and more harsh, and they are often used in some high-speed and high-pressure frictional occasions, such as high-speed trains, aerospace, etc.; in the field of high-speed grinding, the anti-friction performance of metals directly affects its cutting Processability. Therefore, it is extremely important to further explore the anti-friction properties of metal materials.

The purpose of the friction test is to study the changes in the metallographic structure, surface properties and wear amount of the metal surface after being subjected to high-speed and high-pressure friction for a certain period of time. These properties are of great significance for material selection and life analysis in actual production. For example, the engineer needs to determine the wear rate of the rail according to the anti-friction performance of the rail, and further determine the maintenance cycle and renewal cycle of the rail.

Chinese patent CN 200910249051.7 discloses a high-speed high-temperature multifunctional friction and wear testing machine, which is provided with a rotating disk, on which a translational sample is installed, and the translational sample and the rotating sample are arranged opposite to each other to form a pair of friction pairs. There is a heating device on the side of the rotating sample and the translational sample. The defects of this testing machine are as follows: 1. Using servo motors with precision lead screws to control the slide table, although this scheme has high precision, it is difficult to generate large driving force and cannot simulate high-speed and high-voltage working conditions; 2. Servo motors and The precision screw drive system has high cost, short life and poor vibration resistance.

Contents of the invention

In order to solve the problems that the existing technology cannot simulate high-speed and high-pressure working conditions, high cost and short life, the utility model provides a metal high-speed and high-pressure friction testing machine that meets the requirements of working conditions and has low cost and high stability.

The technical scheme that the utility model solves its technical problem adopts is:

A metal high-speed and high-pressure friction testing machine includes a frame, and the friction testing machine also includes a friction wheel, a vertical slide plate and a longitudinal slide table for placing a metal plate to be tested, and the friction wheel shaft of the friction wheel is used to drive The friction drive assembly that the friction wheel rotates is connected. The friction drive assembly is installed on the vertical slide plate. , the longitudinal sliding platform is arranged below the friction wheel, the longitudinal sliding platform is slidably set on the longitudinal sliding rail, the longitudinal sliding rail is arranged on the frame, and the longitudinal sliding platform is used to drive the longitudinal The longitudinal drive assembly for sliding longitudinal movement is connected, and the axis of the friction wheel shaft is perpendicular to the center line of the longitudinal slide rail.

Further, the friction drive assembly includes a servo motor, a shaft coupling, and a friction wheel bearing frame. Both ends of the friction wheel shaft are mounted on the friction wheel bearing frame, and the friction wheel bearing frame is fixed on the bottom surface of the vertical slide. The friction wheel shaft One end of the shaft coupling is connected with the output shaft of the servo motor, and the servo motor is installed on the bottom surface of the vertical slide.

Still further, the lifting drive assembly includes a vertical oil cylinder body, a vertical oil cylinder cylinder rod and a vertical slide bar, the vertical slide bar is fixed on the frame, and the vertical slide plate is slidably set on On the vertical slide bar, the top surface of the vertical slide plate is connected to the lower end of the cylinder rod of the vertical oil cylinder, and the upper end of the cylinder rod of the vertical oil cylinder is connected to the actuating end of the cylinder body of the vertical oil cylinder. The cylinder body of the vertical oil cylinder is installed on the frame.

Furthermore, the longitudinal drive assembly includes a longitudinal oil cylinder block, a longitudinal oil cylinder cylinder rod, a longitudinal oil cylinder fixing seat and a longitudinal oil cylinder connecting seat, the longitudinal oil cylinder body is fixed on the longitudinal oil cylinder fixing seat, and the longitudinal oil cylinder fixing seat is installed On the frame, the actuating end of the cylinder block of the longitudinal oil cylinder is connected to the rear end of the cylinder rod of the longitudinal oil cylinder, and the front end of the cylinder rod of the longitudinal oil cylinder is connected to the connecting seat of the longitudinal oil cylinder, and the connecting seat of the longitudinal oil cylinder is fixed on the The bottom surface of the vertical slide.

The frame includes a bottom frame, a bottom plate and an upper fixing plate, the bottom plate is installed on the bottom frame, the longitudinal slide rail is opened on the bottom plate, the longitudinal drive assembly is installed on the bottom plate, and the lifting drive assembly Fixed on the upper fixed plate.

The beneficial effects of the utility model are mainly manifested in: 1. The whole device is simple in structure, stable and reliable, and low in cost. 2. The hydraulic servo system can provide greater pressure and feed force, and can simulate more severe working conditions. 3. The force sensor and displacement sensor are used to form a closed-loop control system with high precision.

Description of drawings

Fig. 1 is the overall schematic diagram of the metal high-speed high-pressure friction testing machine of the present invention.

Fig. 2 is a bottom view of the metal high-speed high-pressure friction testing machine of the present invention.

Fig. 3 is an A-direction view of the metal high-speed and high-pressure friction testing machine of the present invention.

Fig. 4 is a schematic diagram of the closed-loop control system of the present invention.

detailed description

Below in conjunction with accompanying drawing, the utility model is further described.

Referring to Figures 1 to 4, a metal high-speed and high-pressure friction testing machine includes a frame, and the friction testing machine also includes a friction wheel 20, a vertical slide 4 and a vertical slide 10 for placing a metal plate to be tested. The friction wheel shaft of the friction wheel 20 is connected with the friction drive assembly for driving the friction wheel to rotate, and the friction drive assembly is installed on the vertical slide 4, and the vertical slide 4 is connected with the lift drive assembly for driving the vertical slide up and down connected, the lifting drive assembly is installed on the frame, the longitudinal sliding table 10 is arranged below the friction wheel 20, and the longitudinal sliding table 10 is slidably set on the longitudinal sliding rail 11, and the longitudinal sliding rail 11 is arranged on the frame, and the longitudinal sliding table 10 is connected with a longitudinal drive assembly for driving longitudinal sliding and longitudinal movement, and the axis of the friction wheel shaft is perpendicular to the centerline of the longitudinal sliding rail 11 .

The metal high-speed and high-pressure friction testing machine of this embodiment includes a bottom frame 1, a bottom plate 2, an upper bracket 3, a vertical slide plate 4, a vertical slide bar 5, an upper fixed plate 6, a vertical oil cylinder body 7, and a vertical oil cylinder cylinder. Rod 8, metal plate to be tested 9, longitudinal slide table 10, longitudinal slide rail 11, longitudinal oil cylinder body 12, longitudinal oil cylinder cylinder rod 13, longitudinal oil cylinder fixing seat 14, longitudinal oil cylinder connecting seat 15, servo motor 16, coupling 17, friction wheel shaft 18, friction wheel bearing frame 19 and friction wheel 20.

As shown in Figure 1. The bottom frame 1 is placed on a solid ground, the bottom plate 2 is welded and fixed with the bottom frame 1, the upper bracket 3 is welded and fixed with the bottom plate 2, the upper fixed plate 6 is welded and fixed with the upper bracket 3, and the vertical sliding rod 5 is respectively fixed with the bottom plate 2 and the upper frame. Plate 6 is fixedly connected by thread, vertical slide plate 4 passes through vertical slide rod 5, and can move freely up and down, vertical oil cylinder body 7 and upper fixed plate 6 are fixedly connected by bolts, vertical oil cylinder cylinder rod 8 and vertical slide plate 4 is fixedly connected by thread.

As shown in Figure 1 and 2. The metal plate 9 to be tested is fixedly connected with the longitudinal sliding table 10 through a special fixture. The longitudinal sliding table 10 is placed on the longitudinal sliding rail 11 and can move freely in the longitudinal direction. The oil cylinder fixing seat 14 is welded with the base plate 2, the longitudinal oil cylinder cylinder rod 13 is fixedly connected with the longitudinal oil cylinder connecting seat 15 through threads, and the longitudinal oil cylinder connecting seat 15 is welded with the longitudinal sliding table 10 (the bottom plate 2 is provided at the longitudinal oil cylinder connecting seat 15. Long groove, to guarantee to pass longitudinal oil cylinder connecting seat 15).

As shown in Figure 3. Servo motor 16 is fixedly connected with vertical slide plate 4 by bolts, friction wheel shaft 18 is connected with servo motor 16 by coupling 17, friction wheel shaft 18 passes through the bearing hole on the friction wheel bearing frame 19, can rotate freely, friction wheel bearing frame 19 is welded and connected with vertical slide plate 4, and friction wheel 20 is passed on the friction wheel axle 18, and is connected by key.

As shown in Figure 4. Both the vertical feed and the longitudinal feed of the utility model adopt a closed-loop control system. The vertical slide plate 4 is provided with a displacement sensor and a force sensor, which can be divided into two situations. Situation 1: When the pressurization mode is the specified displacement, the displacement sensor monitors the displacement of the vertical slide 4 in real time and compares it with the set displacement. The obtained feedback signal is sent to the controller, and the controller controls the vertical feed electromagnetic When the valve is opened, the vertical slide 4 starts to feed until the output value is consistent with the set value, the controller closes the vertical feed solenoid valve, and the vertical slide 4 stops feeding; Case 2: When the pressurization mode is the specified pressure , the force sensor monitors the pressure value between the friction wheel 20 and the metal plate 9 to be tested in real time, compares it with the set pressure value, and feeds the difference back to the controller. The other processes are the same as in case 1. A displacement sensor is installed on the longitudinal sliding table 10, which can monitor the displacement of the longitudinal sliding table 10 in real time and compare it with the set displacement. The obtained feedback signal is sent to the controller, and the controller controls the longitudinal feed solenoid valve to open. The longitudinal slide 10 starts to feed, and when the output value is consistent with the set value, the controller closes the longitudinal feed electromagnetic valve, and the longitudinal slide 10 stops feeding.

When the utility model is in use, firstly control the vertical sliding table 10 to move to the A side, use a special clamp to fix the metal plate 9 to be tested on the vertical sliding table 10, and then control the vertical sliding table 10 to move to the B side, so that the metal plate to be tested Version 9 reaches the predetermined pressurized position. Then the vertical slide plate 4 is controlled to move downwards. When the pressurization mode is the specified displacement, the controller controls the vertical slide plate 4 to move down the specified displacement. When the pressurization mode is the specified pressure, the controller controls the vertical slide plate 4 to move downward. Move down until the pressure value reaches the set value. Afterwards, the servo motor 16 is started, and the friction wheel 20 rubs against the metal plate 9 to be tested. The follow-up steps are divided into two cases according to the test requirements. Case 1: fixed-point test, keep the friction wheel 20 and the metal plate 9 to be tested for a set friction time, then stop the servo motor 16, and the controller controls the vertical slide 4 to move upward , control the vertical sliding table 10 to move to the A side, and end the test; Case 2: plane test, the controller controls the vertical sliding table 10 to move slowly at the set speed, so that the friction wheel 20 and the metal plate 9 to be tested move relatively, and the vertical sliding table 10 After the platform 10 moves to set the displacement, the servo motor 16 is stopped, and the rest of the steps are the same as in case one.

The material of the friction wheel 20 can be replaced, and the utility model can simulate the friction characteristics between various materials.

The content described in the embodiments of this specification is only an enumeration of the realization forms of the utility model concept, and the protection scope of the utility model should not be regarded as being limited to the specific forms stated in the embodiments, and the protection scope of the utility model also extends to Equivalent technical means that those skilled in the art can think of according to the concept of the utility model.

Claims (5)

1. a kind of metal high speed and high pressure frictional testing machine, including frame, it is characterised in that：The frictional testing machine also includes friction Wheel, vertical slide plate and the longitudinal slide unit for placing metallic plate to be measured, the friction wheel axle of the friction pulley with for band dynamic friction Take turns rotate friction drive unit connection, the friction drive unit be arranged on vertical slide plate on, the vertical slide plate be used to The lifting drive component of vertical slide plate lifting is driven to connect, the lifting drive component is arranged in frame, the friction pulley Longitudinal slide unit described in arranged beneath, the longitudinal slide unit is slideably sleeved in longitudinal slide rail, and the longitudinal slide rail is arranged on In frame, the longitudinal slide unit is connected with the zigzag tread patterns component for driving longitudinal sliding motion to vertically move, the friction wheel axle Axis and the longitudinal slide rail central axis.

2. metal high speed and high pressure frictional testing machine as claimed in claim 1, it is characterised in that：The friction drive unit includes Servomotor, shaft coupling and friction wheel axle bolster, the friction wheel axle two ends are arranged on friction wheel axle bolster, the friction pulley One end that bearing bracket stand is fixed on friction wheel axle described in vertical slide plate bottom surface is connected by shaft coupling with the output shaft of the servomotor Connect, the servomotor is arranged on vertical slide plate bottom surface.

3. metal high speed and high pressure frictional testing machine as claimed in claim 1 or 2, it is characterised in that：The lifting drive component Including vertical cylinder block, vertical oil cylinder cylinder rod and upright sliding bar, the upright sliding bar is fixed in the frame, described vertical Slide plate is slideably sleeved on the upright sliding bar, and the top surface of the vertical slide plate is connected with the lower end of vertical oil cylinder cylinder rod, The upper end of the vertical oil cylinder cylinder rod is connected with the vertical cylinder block as moved end, and the vertical cylinder block is arranged on machine On frame.

4. metal high speed and high pressure frictional testing machine as claimed in claim 1 or 2, it is characterised in that：The zigzag tread patterns component Including longitudinal cylinder block, longitudinal oil cylinder cylinder rod, longitudinal oil cylinder fixing base and longitudinal oil cylinder connecting seat, longitudinal cylinder block It is fixed on longitudinal oil cylinder fixing base, longitudinal oil cylinder fixing base is arranged in frame, the start of longitudinal cylinder block End is connected with the rear end of longitudinal oil cylinder cylinder rod, and the front end of longitudinal oil cylinder cylinder rod is connected with longitudinal oil cylinder connecting seat, institute State the bottom surface that longitudinal oil cylinder connecting seat is fixed on the longitudinal slide unit.

5. metal high speed and high pressure frictional testing machine as claimed in claim 1 or 2, it is characterised in that：The frame include underframe, Base plate and upper mounted plate, the base plate are arranged on underframe, and the longitudinal slide rail, the zigzag tread patterns group are provided with the base plate Part is arranged on base plate, and the lifting drive component is fixed on upper mounted plate.