July 2019 – Page 17 – CNC Machining & Turning, Milling, Metal parts

Vibration three comprehensive test chamber customer equipment

Scope of application: Vibration three comprehensive test chamber is mainly used in aviation, aerospace, shipbuilding, weapons, electrician, electronics, automobile, motorcycle, communication and other industries to determine the process of transportation, storage and use of electrical and electronic products, instruments and other equipment. Reliability test. This product is mainly made up of the temperature and humidity test box equipped with the corresponding vibration table, which can independently complete the corresponding temperature, humidity, vibration test and combination test of three factors.

Technical Parameters:

Temperature range: -70～180°C

Humidity range: 10% to 98% RH

Rapid temperature change range: -55～100°C

Linear rate of change: 15 ° C / min

Internal space: 1000*1000*1000mm (W*D*H)

Features:

※The new air bearing cushion bearing mechanism can accurately reproduce the vibration waveform of the set conditions.
※ The controller can simultaneously set the temperature and humidity and vibration test conditions.
※According to the test application, the excitation force can be selected from 30KN, 60KN and 100KN, and the maximum displacement can reach 51mmp-p.
※Sliding sliding door and built-in cooling fan save space.
※ Can control sinusoidal vibration, random vibration (optional) and impact vibration (optional).
※The drive coil is equipped with safety devices for easy maintenance.
※Equipped with a large observation window for anti-condensation, it is convenient to observe the test conditions in the tank.
※ Four measures to protect the environment: energy saving, space saving, low noise, environmentally friendly refrigerant.

How does the punching heavy material frame work

When in use, turn the heavy material rack control box to the power supply, turn the hand crank counterclockwise, reduce the diameter of the tray (making it smaller than the inner diameter of the coil) and then install one block on the inside of the tray. Type A iron, put on the coil, then turn the crank handle clockwise, tension the inner ring of the coil, and install the A-type iron on the other two trays.

Finally, the material roll head is taken out, and the jog control material frame is used to operate the take-out tape on the electric control box, and then the height of the induction control rod is adjusted according to the production needs, and the discharge length is appropriately controlled.

Rotary vane vacuum pump correct cleaning method

Rotary vane vacuum pumps are widely used in cleaning systems. This type of vacuum pump is well suited for this type of application and is therefore the standard pump in the drying process of the cleaning system. The rotary vane vacuum pump has a long service life and a powerful vacuum generator with a high vacuum level. However, when it comes to a cleaning process with a high probability of steam generation, the rotary vane vacuum pump does not always prevent condensation from occurring during the suction removal of the vacuum pump. At the same time, the condensate is emulsified by vacuum pump oil. This may result in insufficient lubrication of the rolling bearings and rotating blades, resulting in wear of the vacuum pump components, and suction performance and expected vacuum may also be affected. These effects can be maintained by increasing the vacuum pump oil and filters more frequently and the overall operating cost increases.

Look at the manufacturer to explain for you: the cooling principle of quenching oil!

The quenching oil heats the metal material above the phase transition temperature, and after being kept for a period of time, it is quickly put into the medium to be cooled to obtain a martensite structure. This operation process is called quenching. The cooling of the steel in the medium is carried out in three different ways.

1. Vapor film stage. The cooling rate at this stage is very low. As the cooling time is extended, the temperature of the part is continuously decreased, and the stability of the vapor film is gradually lowered, and then the vapor film is broken and enters the boiling stage.

2. The boiling stage. When the vapor film breaks and disappears, the quenching medium is brought into direct contact with the surface of the part, and the quenching medium draws a large amount of heat from the part. The flow of the quenching medium is hindered, and the medium that absorbs heat continuously escapes a large number of bubbles, and the new medium continues to boil vigorously around the parts to form a boiling stage, at which time the cooling rate is large. As the temperature of the parts continues to drop, the boiling phenomenon gradually disappears. When the temperature of the part is lower than the boiling point of the quenching medium, the boiling phenomenon disappears immediately and then the convection heat transfer stage is transferred.

3. Convective heat transfer stage. When the part is in the boiling stage, the temperature of the surrounding quenching medium is close to the temperature of the part, and the temperature of the medium away from the part is lower. Since the quenching medium around the part is different from the temperature of the medium in other places, the quenching medium is convective.

The above is the quenching oil manufacturer’s cooling principle for quenching oil.

Can alloy products be vacuum plated

Summary of reasons why alloys are not suitable for vacuum plating in vacuum furnaces:
1. Because the alloy object is not resistant to high temperature (usually the temperature in the vacuum furnace is as high as 200 ° C), the alloy vacuum plating starts to foam after 110 ° C; affecting the appearance of the product;
2. When the alloy object is vacuum-coated, the bottom layer needs to be hit in the early stage, which invisibly increases the complexity of the process;
3. Compared with stainless steel, titanium steel or other pure metal plating parts, the cost of vacuum plating of alloy objects is relatively high;

Tips for hinge mounting methods

1, preparation tools

Prepare special installation tools before installation, such as tape measure/level ruler for measurement, woodworking pencil for drawing line, wood hole opener/pistol drill for opening, fixed screwdriver, etc.

2, draw line positioning

First, use the installation measuring board or woodworking pencil to draw the line (the drilling margin is usually 5 mm), and then use a pistol drill or a woodworking hole opener to make a 35 mm hinge cup mounting hole on the door panel. The drilling depth is generally 12 mm. ;

3, fixed hinge cup (hinge products)

Fix the hinge cup with the self-tapping screws in the hinge cup hole on the starter panel of the hinge sleeve;

4, fixed base

After the hinge is embedded in the cup hole of the door panel, the hinge is opened, then the side plate is inserted and aligned, and the base is fixed by a self-tapping screw;

5, debugging effect

The last step is to open the door to test the effect.

The general hinges can be adjusted in six directions, aligned up and down, and the two doors are moderately right and left. The best effect of the cabinet door debugging is better. The clearance after closing the door is generally 2 mm.

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The common sense of decorating the door closer, manual collection

Who invented the modern door closer?

We call the modern hydraulic door closer, which began with a patent registered by the Americans in the early twentieth century. Unlike traditional door closers, it is through the door closer.

The liquid in the medium is throttled to achieve a buffering effect.

What is the role of the door closer in addition to closing the door?

The core of the hydraulic door closer design idea is to realize the control of the closing process, so that the various functional indicators of the closing process can be adjusted according to the needs of the person.

Section. The significance of the door closer is not only to automatically close the door, but also to protect the door frame and the door body (smoothly closed), and more importantly, the door closer has become

An indispensable part of the intelligent management of the building.

Door closers are mainly used in commercial and public buildings, but they are also used at home. They have many uses, the most important of which is to make the door

Close by yourself to limit the spread of fire and ventilation in the building.

What issues should I consider when choosing a door closer?

Before choosing a door closer, you should consider: door weight, door width, door opening frequency, use requirements and use environment.

Door weight and door width are the premise of choosing the model of the door closer. Generally, the door weight is small and the model with small power is selected. First, it is very easy to open the door, and it is installed on the door.

Coordinating aesthetics; second, small products are generally more economical, and vice versa.

The opening frequency is closely related to the quality requirements of the product.

First, the door closer is required to have good sealing performance and no oil leakage. The key is the technology and material of the dynamic sealing. Second, the life of the door closer is required to be long.

It can guarantee long-term and normal use after installation, reduce the workload and cost of maintenance and renewal, and also feel the convenience and enjoyment of door closer products.

Accepted.

Usage requirements include:

1). Is there an automatic stop function after opening the door?

2). Damping buffer function

Damping buffer is generated after quick opening to a certain position.

Moreover, the damping buffer force and range can be adjusted according to the use requirements;

This function is used to prevent the door or lock from colliding with the wall when the door is opened quickly.

Or to prevent people from losing weight when opening the door in an emergency escape and tilting forward to the ground.

3). Delayed slow closing

The door is slowly closed at a constant speed from the maximum position of the door opening, and can be adjusted steplessly according to requirements.

It is suitable for use in ordinary and crowded places, especially in hospitals, with doors and passages for the elderly, children and disabled.

4). Closed power adjustable function

Can be installed on different doors with a wide range of door weights and door widths.

And places where the resistance is high due to environmental reasons

Free and stepless adjustment can get satisfactory closing power,

It is especially useful in coastal cities, where vehicles and ships often change due to wind resistance.

5). Use environment: Fire protection requirements (fire protection requirements), anti-freeze requirements (places of minus 35 degrees in northern winter)

Installation method of bathroom partition door

1, the bathroom partition door to buy a good quality shower room partition material. The plate is the basis of the shower partition. Try to use waterproof, moisture-proof, anti-collision and impact-resistant partition materials, so that the shower partition is safer. The key factor of the shower partition is the accessories. In the shower partition, the requirements for the accessories are wear-resistant and sturdy.

2. When measuring the relationship between the size of the shower partition and the size of the bathroom during construction, it must be controlled so as not to be unsuitable in size when installing. Then first install the sealing strip. The shower partition door is placed in a damp bathroom. To prevent mold and other conditions, the shower door should be installed with a sealing strip before the aluminum strip is placed on the side. The sealing strip has the functions of sealing, mildewproof and silent.

3. Connect the frame. Once the seal is installed, the glass is embedded in the aluminum strip. The role of the aluminum strip is to protect the glass. Second, the aluminum strip is required to be used as a frame, and then fixed to the wall by a frame connection. After the aluminum strip is buckled, the aluminum strip and the glass, the aluminum strip and the aluminum strip are fixed by screws to form a frame. Mounting screws is a critical step in the assembly process. First of all, this is a meticulous work, the screws are relatively small, and it is difficult to install. Second, the screws need to be tightened to ensure that the attached frame does not fall apart.

4. At the contact between the mullion and the wall, the bottom rail and the stone base, the stone base and the ground contact, and the glass seal is sealed. The horizontal gap between the stone base and the ground is too large, and the white cement is leakproof. At the contact between the mullion and the wall, the bottom rail is in contact with the stone base, and the stone base is in contact with the ground. If the gap between the stone base and the ground is too large, it should be treated with paste white cement for leak prevention.

Bathroom waterproofing tips, do you know

First, the brand must be recognized when purchasing: At present, there is a flood of goods in the market, and toxic materials that have been eliminated or banned by the state have also flooded into the homes. Ordinary consumers should choose brand products with high reputation, good reputation, high degree of anti-counterfeiting and international quality system certification.

Second, the waterproof parts should be comprehensive: the floor and wall of the bathroom (return height is not less than 1.8 meters or full), the floor and wall of the kitchen, balcony (return height is not less than 0.3 meters), all of the first floor residential Floor and wall (return height 0.3 m), the ground floor and all walls of the basement should be waterproof and moisture-proof.

Third, the thickness of the waterproof layer should be enough: the thickness of the waterproof layer directly affects its waterproof life. If the thickness of the waterproof layer is reduced, it is equivalent to reducing its waterproof life. cnc machining

Fourth, the construction process should be meticulous: the joint between the wall and the ground, the yin and yang angle, the water pipe, the floor drain and the surrounding of the sanitary ware and the trench in the laying of the cold and heat pipe are the key waterproof parts, and the construction must be meticulous.

5. Closed water test after completion: After the waterproof construction is completed, seal the door and the drain, and store the water for 24 hours indoors to check if there is any leak.

6. If leakage is found, even if remedial measures are implemented.

CNC machine maintenance methods

The main contents of daily maintenance of CNC CNC machine tools: the daily maintenance of CNC machine tools requires maintenance personnel not only to have mechanical, processing technology and hydraulic knowledge, but also to have computer, automatic control, drive and measurement technology knowledge, so as to fully understand and master the CNC lathe, do a good job in time. Maintenance work.

The main maintenance works are as follows:

(1) choose the right environment for use. The operating environment of NC lathe (such as temperature, humidity, vibration, power supply voltage, frequency and interference) will affect the normal operation of the machine tool, so the installation of the machine tool should strictly comply with the installation conditions and requirements specified in the machine tool instructions. If economic conditions permit, the NC lathe should be installed in isolation from ordinary machining equipment for easy maintenance and maintenance.

(2) CNC lathe should be equipped with specialized personnel in NC system programming, operation and maintenance. These personnel should be familiar with the machine tools used in the mechanical, numerical control system, electrical equipment, hydraulic, pneumatic and other parts of the characteristics of the working environment, processing conditions, and can be in accordance with the machine tools and system instructions for the correct use of CNC lathes.

(3) timely cleaning. Such as air filter, electrical cabinet cleaning, printed circuit board cleaning.

(4) Machine tool cable inspection, mainly to check the cable moving connector, bend out of contact, broken wire and short circuit and other faults.

(5) In some CNC systems, CMOS components are used to store the parameters, which are maintained by battery power when power is cut off. When a low voltage alarm occurs, the battery must be replaced in time, and must be carried out in the state of power on the control system, otherwise the storage parameters will be lost, resulting in the NC system can not work.

(6) maintenance of CNC lathe is not necessary for a long time. When the NC lathe is idle, it should be energized to the NC system frequently and run empty when the lathe is locked. In the Meiyu season when the air humidity is high, it should be energized every day, and the humidity in the numerical control cabinet should be driven away by the heating of the electrical components themselves to ensure the stability and reliability of the electronic components.