What are the requirements for hydraulic oil for hydraulic radial drilling machine of radial drilling

1.Suitable viscosity and good viscosity temperature performanceThe viscosity range of the hydraulic oil used in the general hydraulic system is:

2.Good lubrication performance In hydraulic transmission machinery and equipment, in addition to hydraulic components, some other parts with relative sliding should also be lubricated with hydraulic oil, therefore, the hydraulic oil of small CNC drilling and milling machine should have good lubrication performance. To improve the lubricating properties of hydraulic fluids, additives can be added to increase their lubricating properties.

3.Good chemical stability, that is, it has good stability to heat, oxidation, hydrolysis and compatibility.

4.It has good lubrication for the hydraulic device of the universal milling machine and the elements in relative motion.

5.It has anti-rust and anti-corrosion properties for metal materials.

6.The specific heat and thermal conductivity are large, and the coefficient of thermal expansion is small.

7.Good foam resistance and demulsification resistance.

8.The oil is pure and contains little impurities.

9.The flow point and freezing point are low, the flash point (the temperature at which the oil vapor on the oil surface can be burned internally by an open flame, but the oil itself does not burn) and the ignition point are high.

Shell is too expensive, just use the Great Wall's just ordinary 46 anti-wear hydraulic oil, a barrel of 18L is about 200. Note that when you run out of gas, just change it. Also, you can't use waste oil.

And now it's winter, the temperature is relatively low, it is best to use a little thinner oil, for example: 30 is more expensive than 46, if you don't want to spend so much money, buy some diesel or kerosene, add to 46 dilution can also be used.

1. The viscosity range of the hydraulic oil used in the general hydraulic system is: =2. Good chemical stability, that is, it has good stability to heat, oxidation, hydrolysis and compatibility.

3. It has anti-rust and anti-corrosion properties for metal materials.

4. The specific heat and thermal conductivity are large, and the thermal expansion coefficient is small.

5. Good anti-foaming and anti-emulsibility.

6. The oil is pure, and the impurities are less.

7. The flow point and freezing point are low, and the flash point (the temperature at which the oil vapor on the oil surface can be burned by an open flame, but the oil itself does not burn) and the ignition point are high.

Ordinary anti-wear hydraulic oil will do. If you want to change it from time to time, buy branded goods. Such as: Shell.

Radial drilling machine, can also be called radial drill. Radial drilling is a kind of hole processing equipment, which can be used for drilling, reaming, reaming, tapping and scraping end faces and other forms of processing. The following is an introduction to the types of drill bits and drill bits of radial drilling machines

The types of drill bits used for radial drilling machines include straight shank twist bits, fixed shank twist bits and fixed shank shovel (undercut) drill bits. Straight shank twist drill bits are mostly used in single-head drilling machines, drilling simpler printed boards or single-sided panels, and now it is rare to see in large circuit board production plants, and its drilling depth can reach 10 times the diameter of the drill bit. In the case of low substrate stacks, drill misalignment can be avoided by using a drill sleeve.

At present, most manufacturers use radial drilling machines, which use cemented carbide fixed-shank drill bits, which are characterized by automatic replacement of drill bits. High positioning accuracy, no need to use a drill bushing. Large helix angle, fast chip removal speed, suitable for high-speed cutting.

In the full length of the flute, the diameter of the drill bit is an inverted cone, and the friction with the hole wall is small during drilling, and the drilling quality is high. Common drill shank diameters are and.

The material of the drill bit: the drill bit for printing board drilling is generally made of cemented carbide, because the epoxy glass cloth copper foil plate wears out the tool very quickly. The so-called cemented carbide is made of tungsten carbide powder as the matrix, cobalt powder as the binder through pressure and sintering.

Usually contains tungsten carbide 94 and cobalt 6. Due to its high hardness, it is very wear-resistant, has a certain strength, and is suitable for high-speed cutting. However, the toughness is poor and very brittle, in order to improve the performance of cemented carbide, some use a layer of 5 7 microns of extra-hard titanium carbide (TIC) or titanium nitride (TIN) to be deposited on the carbide matrix to make it have higher hardness.

Some use ion implantation technology to inject titanium, nitrogen, and carbon into the matrix to a certain depth, which not only improves the hardness and strength, but also allows these injected components to migrate inward when the drill bit is re-grinded. There are also physical methods to generate a layer of diamond film on the top of the drill bit, which greatly improves the hardness and wear resistance of the drill bit. The hardness and strength of cemented carbide are not only related to the ratio of tungsten carbide to cobalt, but also related to the particles of powder.

The average size of tungsten carbide phase grains of ultra-fine grain is less than 1 micron for tungsten carbide drill bits. This kind of drill bit not only has high hardness, but also has improved compressive and flexural strength. In order to save costs, now many drill bits adopt welded shank structure, the original drill bit is cemented carbide as a whole, and now the rear drill handle is made of stainless steel, the cost is greatly reduced, but due to the use of different materials, its dynamic concentricity is not as good as the overall cemented carbide drill bit, especially in small diameter.

There are many types of commonly used drill bits in drilling machines, mainly as follows: 1) Twist drill --- is the most widely used tool for hole processing 2) There are two types of center drilling ---: ordinary and with guard cone. 3) Flat drill --- are generally homemade according to needs.

4) Gun drill--- The working part of the gun drill is a semicircular rod in front of which is a plane, and the cutting edge perpendicular to the axis of the drill bit is at the end of the rod. 5) How are gun drill taper shank bits and straight shank bits divided? Twist drill is divided into two kinds of taper shank drill bits and straight shank drill bits, generally the diameter of the drill bit greater than l 3mm is made into a taper shank Rang, and the diameter of the drill bit less than 13mm is made into a straight shank.

The drill bit of the taper shank of the radial drilling machine can generally be directly inserted or inserted into the taper hole of the spindle of the drilling machine after installing the drill sleeve on the taper shank, and the center of the machining hole is processed. When the radial drilling machine is processed, the drill bit is rotated with the help of the friction generated by the conical surface. The diameter of the drill bit is large, the cutting force is large, and the friction required is large, so the taper shank needs to be made by the radial drill manufacturer, in order to meet the friction required by the drill bit cutting.

The diameter of the drill bit is small, the cutting force is small, the friction required is also small, and the taper shank can be made correspondingly small. Therefore, when the diameter of the drill bit is different, the size of the taper cone used in the shank is also different. The standard twist drill used by the radial drilling machine is composed of a shank, a neck, and a working part.

The shank comprises a drill shank and a drill tongue, and the drill shank is used for clamping and is used to transmit the torque and axial force required for drilling. The drill tongue is used to disassemble the drill bit using a Z3050 radial drilling machine. The neck is located between the working part and the shank and is used for grinding the drill bit when the grinding wheel is withdrawn.

The specifications, materials, and factory logos of the drill bits are generally engraved on the neck. The working part of the radial drill is divided into a cutting part and a guide part. The cutting section is responsible for the main cutting work, which consists of the radial drilling machine cross edge and two main cutting edges.

The guide part plays the role of guiding the direction of the drill bit and the wall of the polishing hole when drilling, and is also the grinding part of the cutting part.

The hydraulic pre-selection transmission mechanism can save auxiliary time.

The spindle is reversed, Zheng Tan stops (brakes), shifts, neutrals and other actions are controlled with a handle, and the operation is light.

The headstock, rocker arm, inner and outer columns adopt a hydraulically driven diamond-shaped block clamping mechanism, which is reliable in clamping.

The rocker guide rail, the outer cylinder round surface, the spindle, the spindle sleeve and the inner and outer column rotary raceways have all been quenched, which can maintain the stability of the machine tool accuracy for a long time and prolong the service life.

There are perfect safety protection devices and outer column protection.

In terms of structural design, a series of effective measures have been taken in the manufacturing process, which greatly prolongs the accuracy and durability of the machine tool and the service life of the whole machine.

1. The locking mechanism of the rocker arm is different. The mechanical rocker arm is controlled by mechanical manipulation, and the hydraulic rocker arm is locked by hydraulic manipulation.

2. Drilling machine refers to a machine tool that mainly uses a drill bit to process holes on the workpiece. Usually the rotation of the drill bit is the main motion, and the axial movement of the drill bit is the feed motion. The drilling machine has a simple structure and relatively low machining accuracy, and can drill through holes, blind holes, replace special tools, expand, countersin, reamer or tap and other processing.

During machining, the workpiece does not move, let the tool move, align the center of the tool with the center of the hole, and rotate the tool (main motion). The drilling machine is characterized by the workpiece being fixed and not moving, the tool making a rotary movement, and feeding along the direction of the spindle, and the operation can be manual or motorized.