Classification and characteristic of machine tool

Machine tool refers to the machine of manufacturing machinery, can also be referred to as mother machine and tool room machine. General accuracy requirement is high and the surface roughness requirement is thinner part, are on the machine tool for processing, and processing methods in addition to cutting, casting, forging, welding, stamping, extrusion, etc. Thus it can be seen the machine tool is an indispensable part of mechanical manufacturing industry.

The machine tool has a lot of kinds, among them the common has the following kinds:

Turning machine, main is to use turning cutter to rotate the work piece turning processing machine tool. Drill, expanding drill, reamer, screw tap, threading die, etc. tools are available on a turning machine processing accordingly. It is mainly used for machining shaft, plate, cover and other work piece what has rotary surface, is the most widely used in machinery manufacturing and repair factory of machine tool.

Boring machine, main is to use boring cutter to artifacts existing prefabricated hole boring processing machine. Is mainly used for machining high precision holes or one-time positioning multiple what finished machining of holes. In a large box part processing equipment, boring machine is the most important.

Drilling machine, main use drill to process hole on the work piece is machine tool. Drilling machine structure is simple, the processing precision is relatively low, can drill a hole, blind hole. If want to enlarge hole, counter boring, reaming or tapping etc. processing. As long as replace special cutter can work.

Milling machine, main is to use milling cutter in the work piece on the processing of the every surface of the machine tool. It in addition to processing flat, grooved, various surface, gear, you can also process more complex type surface.

Planing machine, it is with the planing cutter to the work piece surface flat, grooved or forming surface planing machine tool. Can planing on planing machine horizontal, vertical, slant, curve, also can planing hole, gear and rack, etc. Planing machine is most suitable for planing narrow long surface of the work piece, but the productivity is low, only suitable for small and medium-sized batch production.

Grinding machine, is the use of grinding apparatus work piece surface of machine tool. Grinding machine for grinding the part with high precision and surface roughness is small, the hardness is high or relatively brittle material, grinding machine can be processed.

CNC machine tool, is short for computer numerical control machine tool, is a kind of program control system of automation machine tool. The operation and monitoring of the CNC machine tool are all completed in the CNC unit. Its machining precision is high, has the stable machining quality; A high degree of automation, which can reduce labor intensity.

Forging machine tool, it is for the use of metals and machinery cold manufacture equipment, and mainly to change the shape of the metal processing. Forging machine tool includes veneer reeling machine, plate shearing machine, punching machine, press machine, hydraulic machine, oil press machine, bending machine and so on.

TAGS
Machine tool introduction, Machine tool classification, Turning machine, Boring machine, Milling machine, Planing machine, Grinding machine, Drilling machine, CNC machine tool, Forging machine tool, Machine tool wholesaler

Mechanical hydraulic booster and electric booster, which is better?

Mechanical hydraulic booster system mainly consists of hydraulic pump, oil pipeline, pressure fluid control valve, v-shaped transmission belt, oil storage tank, etc. This booster is part of the engine power output into hydraulic pump pressure, assisting force applied to the steering system, so that the tires turned. To maintain pressure, whether to need to turn to, the system is always in working state, energy is consumption high, from a certain extent wastes a lot of resources.

Electric booster system is a power steering system directly depend on the motor assist torque, it is mainly composed of torque sensor, speed sensor, motor, deceleration agency and electronic control unit, etc. Car in low speed big turn, the electronic control unit drives the electronic hydraulic pump operation at high speed is relatively high power output, make the driver play the direction save effort; When the car at high speed, the electronic control unit drives the electronic hydraulic pump running at low speed, save a part of engine power.

Mechanical hydraulic booster security, stability, durable, easy maintenance, but the waste of resources; Electric booster precision, low noise, no pollution, than mechanical hydraulic booster save labor, but the structure is relatively complex. So, mechanical hydraulic booster or electric booster which is better, is difficult to judge. Because different models have different performance, specific still should see the actual car with the demands of consumers.

 

 

 

 

TAGS

Mechanical hydraulic booster, Electric booster, Mechanical hydraulic booster component, Electric booster structure, Mechanical hydraulic booster system advantage, Electric booster system advantage

The structure and characteristic of the transmission

Transmission is made of two parts that variable speed drive mechanism and variable speed operation mechanism, can be made into a separate variable speed mechanism or and drive mechanism in the same casing. Variable speed drive mechanism main function is to change the numerical value and direction of torque and rotational speed; Operation mechanism main function is to control the drive mechanism, realize transmission velocity ratio of transformation, namely the realization of shift.

Transmission mechanism mostly uses the ordinary gear drive, also uses planetary gear transmission. Ordinary gear shifting mechanism uses slip gear and clutch. Slip gear has multi-slip gear and dislocation slip gear. Use multi-slip gear variable speed, axial dimension is big; use dislocation slip gear variable speed, compact structure, but the transmission ratio changes little. Clutch has mesh type and friction type. Use mesh type clutch, variable speed should go ahead in park or rotational speed difference is very small. Use friction clutch can be variable speed under any speed difference in operation, but the capacity is small, and can not guarantee two shafts strictly synchronous. At the mesh type clutch installs friction plate, when variable speed first by friction plate driven wheel after to the synchronous speed then to joint. As a result, can overcome shortcoming of two shafts can’t synchronic.

Simple transmission has efficiency high, simple structure, use convenient, etc. advantages; but gear number less, variation range is small, only appropriate in certain gear number is not much use in the car. If the increase scope, makes the transmission size increases, shaft span increases. If use integrated transmission, can increase the gear number and don’t make shaft span is too large.

TAGS
Transmission structure, Variable speed drive mechanism, Variable speed operation mechanism, Transmission characteristic, Comprehensive type transmission, High quality transmission factory, China machinery network

Hydraulic buffer little common sense

Hydraulic buffer, is also called hydraulic damper, by hydraulic damping effect on the wagon as a freewheeling proceed buffer deceleration to stop. Buffer is compressed process is through piston squeeze oil, this process consumes a large amount of kinetic energy, play a buffer role. When work is finished, the piston return spring is pushed to the original location, to complete a working cycle.

When hydraulic buffer by the collision pressure, kinetic energy after the plug head and accelerate the spring to the piston, make it move to the right. Because buffer work chamber is equipped with a reset spring, mandril and oil. Piston movement extrusion working chamber of the oil, make its reset spring compression, while making the oil extrusion from the annular space between the piston and the mandril, into the oil storage chamber. At the beginning of the piston movement, due to large and annular space between the mandril, the oil is easy to be squeezed out; Continues in piston movement, the annular space are getting smaller and smaller, the piston resistance increasing, to mandril cylindrical phase, the resistance is also stable in maximum.

Hydraulic buffer advantage has to reduce or eliminate hydraulic impact, protect the hydraulic component. So it is widely used in hoisting transportation, metallurgy, port machinery, railway vehicle and other mechanical equipment, prevent hard crash in the process of transportation, prevent damage of parts.

In order to prolong the service life of hydraulic buffer, when deposit, don’t upside down, to prevent the hydraulic oil spill; Environment temperature should be 22-80 Celsius degree; Inventory custody is should be placed in ventilated place, humidity below eighty percent advisable; Pay attention to the fire, do not put in fire place; Before use hydraulic buffer, it should be horizontal installed.

Tags
Hydraulic buffer, Hydraulic damper, Hydraulic buffer structure, Hydraulic buffer principle, Hydraulic buffer advantage, How to prolong the service life of hydraulic buffer

The classification and working process of the deep hole drill

Deep hole drill, specially used for processing of deep hole drill. Usually in machining the ratio of the hole depth and the hole diameter is greater than six mm hole called a deep hole. When the deep hole drilling, heat dissipation and chip removal is very difficult, because the drill stem long and thin, leads to poor rigidity, easy bending and vibration. So cooling and chip removal problems, is typically with the help of use pressure cooling system to solve.

According to the chip removal way, deep hole drill can be divided into outside chip removal and internal chip removal. Outside chip removal has gun drill, deep hole flat drill and deep hole twist drill, etc.; According to the different processing system, internal chip removal can be divided into BTA deep hole drill and jet drill and DF deep hole drill.

Gun drill: just have one cutting part, used for processing the barrel at the earliest. When drilling, cutting fluid from drill stem into the among them, after the drill head hole injection into the cutting zone, and then with a chip from the drill v-shaped groove discharge.

BTA deep hole drill, cutting fluid from the drill stem and hole wall interval feed into, by cutting fluid pressure will chip out of the inner hole of drill stem discharge.

Jet drill: a multipoint internal chip removal deep hole drill, drill pipes with inside and outside two layer, most of the cutting fluid from inside and outside drill pipes clearance into the cutting zone, and then together with the chip into the inner tube; The other a small part of the cutting fluid is through the end of a tube of crescent-shaped hole into the inner tube, produce injection effect, form the low pressure area, help suction chip.

DF deep hole drill, the drill mix together BTA deep hole drill and jet drill advantages together, use single tube, chip removal by push and suction dual function, improve the ability of chip removal.

Tags
Deep hole drill, Outside chip removal deep hole drill, Internal chip removal deep hole drill, Gun drill, BTA deep hole drill, Jet drill, DF deep hole drill, High quality deep hole drill, Deep hole drill process factory

Tapping machine tapping processing technology

Tapping machine is a machine shell, end face, nut, flange and so on with different specifications of the hole or blind hole of the parts for inner side of the hole of internal threads, screws or tooth buckle of mechanical processing equipment. Tapping is a difficult process, the screw tap of the tapping machine is working under very harsh conditions. Because tapping machine screw tap is almost buried in the work piece in cutting, each tooth processing load is bigger than other tool, and screw tap along the screw thread and the work piece surface is very large, when cutting screw thread it must accommodate and ruled out chip. In order to successfully complete tapping, must grasp the following points.

1, work piece screw thread bottom hole orifice to chamfer, through-hole screw thread both ends to chamfer.

2, work piece clamp position correctly, try to put the center line of the threaded hole in horizontal or vertical position, tapping when convenient to judge screw tap axis whether perpendicular to work piece surface.

3, tapping, screw tap and through-hole must keep coaxality.

4, at the beginning of tapping, want to put the screw tap positive as far as possible, and then to tap to add pressure and roll drift holder, when cut into 1-2 circles, carefully check and correct the position of the screw tap.

5, just in case come across screw hole can’t attack, often withdraw from the screw tap, rule out the chip of hole.

6, tapping screw holes in different materials, need some assistance. Such as tapping plastic material screw hole, to add lubrication cooling fluid. Tapping steel material screw hole, use concentration larger emulsion; when the demand of work piece is higher, can use vegetable oil or molybdenum disulfide, etc. Tapping stainless steel screw hole, can use No. 30 engine oil or sulfide oil.

Tags
What is a tapping machine, Tapping machine tapping processing technology, Tapping point, High quality tapping machine, Tapping machine wholesaler, Tapping machine factory

Power head speed reducer

Power head, also called dynamic knife seat, is installed on the power knife tower, is driven by servo motor. Power head because different classification that it is widely used in automobile motorcycle parts, plumbing valves, metal manufacturing and other manufacturing industries.

Speed reducer is a kind of dynamic conveys mechanism, using the gear speed converter, the motor’s rotary deceleration to want rotary, and get a larger torque. Speed reducer application scope is quite wide, almost in all kinds of mechanical transmission system can meet its traces, which is more important used in processing machinery (power head) of the mechanical industry.

Here mainly introduce power head speed reducer why appear abnormal sound as well as the solution.

Power head speed reducer appears abnormal sound reasons: speed reducer friction plate wear, speed reducer shaft or bearing is damaged, gear wear serious, speed reducer overheating, lubricating oil too little etc.

Solution: check the speed reducer friction plate, input shaft and the bearing; Check speed reducer gear oil of the kerogen and the oil level, if the position of gear oil cooler conditions below inspection port, should be oiling to speed reducer. If the gear oil contains scrap iron, It should be take apart speed reducer check gear wear condition, and clean, replace gear oil.

Power head speed reducer appears abnormal sound have many reasons, should be carefully check the reason and adopt the appropriate solution.

Tags
Power head, Speed reducer, Power head speed reducer, Power head speed reducer appears abnormal sound reason, Solve power head speed reducer abnormal sound way, Superior quality speed reducer, Power head wholesaler

Numerical control machine tool small common sense

Numerical control machine tool is short for computer control machine tool, it is a kind of program control system of automation machine tools. This control system is able to handle the logic control code or other symbols in accordance with procedures prescribed by the instruction, and the decoding, with coding numbers show, get through information carrier input numerical control device. By computing the numerical control device sends out various control signals, control machine tool movements, according to the shape and size of the drawing requirements, automatically processing parts.

According to the process uses, machine tool can be divided into numerical control lathe, numerical control drilling machine, numerical control milling machine, numerical control grinding machine, numerical control boring machine, etc. these machine tools are suitable for single piece, small batch and many varieties parts processing.

According to the motion control mode, can be divided into the point location control, line motion control and contouring control. Point location control numerical control machine tool has characteristics of machine tool moving parts can be achieved only from one location to another location precision motion. Line motion control numerical control machine tool has characteristics of machine tool moving parts can not only realize a coordinate location to another location of the precision moving and positioning, and can realize parallel to the coordinate axis linear feed movement or control two coordinate axis realize oblique line feed movement. Contouring control numerical control machine tool has characteristics of machine tool moving parts can be achieve two ordinate axis proceed gang control at the same time.

According to control mode, can be divided into open loop control, which is not to bring a position feedback device control mode. Half closed loop control, w is on the open loop control servo motor shaft equipped with angular displacement detection device. Closed loop control, that is in the machine tool final moving parts corresponding position directly linear or rotary detection device.

Although numerical control machine tool has many types, they have common features. Such as: process precision is high, has the stable machining quality, processing complex shape parts; Numerical control machine tool has high precision itself, big rigidity, can choose favorable processing dosage; Numerical control machine tool automation degree is high, it can increase productivity, and reduce labor intensity, but the quality of operation personnel and the technical requirements of maintenance personnel are higher.

 

 

 

TAGS

Numerical control machine tool introduction, Numerical control machine tool working principle, Numerical control machine tool classification, Numerical control machine tool characteristic, Numerical control machine tool application

What is machine tool attachment?

Machine tool is machine of manufacture machine, also known as mother machine or tool room machine. It generally can be divided into metal cutting machine tool, forging machine tool and woodworking machine tool etc.

Machine tool attachment is an accessory device used to enlarge machine tool processing performance and use range. It widely used in mechanical engineering.

Machine tool attachment has a lot of types, such as all kinds of shields, protective skirt curtain, dustproof plaiting, steel drag chain, machine tool work lamp, machine tool mat iron, adjustable plastic cooling pipe, vacuuming pipe, ventilation pipe, explosion-proof pipe, chip conveyor outside machine, deflection instrument, etc.

In addition more common machine tool attachment has suction cup, workbench, chuck, dividing head and so on,

Suction cup, it is to use magnetic force adsorbs and fixes ferromagnetic work piece.

Workbench, it is made of high quality cold plate precision work produced, strong worktable frame, solid steady, bearing significant, the applicability is strong.

Chuck, it is commonly known as the elastic clamp or collet. Is a kind of cylindrical fixture used to imprisonment machine tool drill or milling cutter, also is a kind of fixed device used to fix reinforcement requirement transformation of parts.

Dividing head, it is installed in the machine tool will be divided into arbitrary equal parts of the tool, make use of calibration loop and vernier, locating pin and index plate as well as exchange gear, will put card on the top or chuck artifacts into arbitrary Angle, circle can be divided into arbitrary equal parts.

Tags
Machine tool, Machine tool attachment, Suction cup, Workbench, Chuck, Dividing head, Machine tool attachment wholesaler, High-quality machine tool, Machine tool manufacturer

Bolt application

Bolt, is made up of the head and the threaded rod (with external thread of the cylinder) of two parts of fastener, used for fastening the two parts with a through hole, but must be used with nuts. Such as screw off nut from bolt, and can make the two parts separately, so the bolt connection is a detachable connection.

According to the connection of the stress mode, can be divided into used in ordinary hole and used in articulation hole. Ordinary mainly bear the weight of axial stress, also can bear the weight of demand is not high horizontal stress. Used in articulation hole bolt must be cooperated with size of hole, much used in horizontal stress.

According to the head shape of bolt, it can be divided into hexagon head, round head, square head, countersunk head, etc. One of the most commonly used is the hex head bolt.

Bolt has a lot of call, may call for the screw, bolt nail, standard part, fastener, etc., but they are collectively known as bolt. Bolt in the daily life and industrial production is one of the essential parts of manufacturing. Bolt used in electronic product, mechanical product, digital product, power equipment, ship, vehicle, water conservancy project, etc. it used in mechanical product is the most widely of them, such as damper, multi-axis machine, tapping machine, drilling machine, power head, pneumatic press, machine tool, etc.

Tags
Bolt, Bolt structure, Bolt classification, Bolt multiple name, Bolt characteristic, Bolt application