How to judge the tool chuck quality is good or bad?

Tool chuck in a variety of cutting tool and machining center spindle provide connection standard. High precision tool chuck difference also depends on the manufacturing tolerance, qualified frock clamp chuck and waste distinguish is often lie in critical size microscopic difference. Tool chuck can be used in drill head, machine tool, drilling machine. So how to judge tool chuck quality is good or bad? You can judge according to the following four.


Cutter axis rotary must be precision consistent with the machine tool spindle rotary axis. Although implementation seemingly perfect method of concentricity is very clear, but also very complex. Even if the spindle fitment chaos problem resolved soon, problem will steer business terminal of tool chuck.

Clamping strength

Clamping force is the ability to prevent the cutting tool rotation in the chuck. Use jacket is the main reason of cause clamping force change. Single Angle jacket can put greater clamping force, and can ensure good concentricity. To make composed of collet, jacket and tool components can get as much as possible good concentricity, must adopt special measuring tool or high precision cutting tool presetters to measure the concentricity. In order to get the best combination of clamping force and the concentricity, should adopt hydraulic chuck or hot shrinkage chuck, so that we can not use the jacket.


Each processed products have tolerance, is mainly used to measure the size of manufacturing variation, the change is smaller, the tolerance is tighter.


Tool chuck imbalance is usually derived from the functional design, such as end milling chuck locking screw or CAT chuck drive slot depth is unequal. But due to many reasons, the unbalance produce is often random. No matter what imbalance comes from where, all need to remove part of the material, in order to eliminate unbalance, correction effect. Another solution is to use an adjustable balance tool chuck, can be adjusted by the radial screw or balance ring to eliminate the imbalance. In this case, we need to determine the size and location of the tool chuck imbalance, and this will need to use the complex balance detector.

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Motor is a kind of rotary electric machine, it is a device converts electrical energy into mechanical energy. It is using electric coil creates a rotating magnetic field and is used to turn the mouse cage closure of aluminum frame to form dynamic rotating magnetic torque. Its working principle is magnetic field in the current stress, make motor rotate.

Motor is mainly composed of stator and rotor, the motion direction of electrify wire in the magnetic field relate to the current direction and magnetic induction line direction. According to different use of power, motor can be divided into dc motor and ac motor, motor in the electric power system is mostly ac motor, synchronous motor or induction motor.

When motor running need to pay attention to make it load characteristic and motor characteristic phase match, avoid aerodyne or shut down. Motor can provide rate of work range is big, from milliwatt magnitude to million kilowatt. It is very convenient to use and control, has self starting, accelerating, braking, reverse, stopper live etc. ability, and can satisfy the various operation requirements; the work efficiency of the motor is higher, and no smoke, odor, polluting the environment, noise is small. Because of its series of advantages, it so widely used in all walks of life.

Machine tooldrilling machine, water pump, belt conveyor fan etc. need motor drive; Electric locomotive, elevator, need motor traction. Family life of the electric fan, refrigerator, washing machine, and even all kinds of motor toys is inseparable from the motor. Motor has been used in all aspects of life in modern society.

Moreover all kinds of motors are used in ac asynchronous motor (also known as induction motor). It is convenient to use, reliable operation, low cost, firm structure, but power factor is low, speed regulation is also more difficult. Large capacity low speed power machine is commonly used motor. Not only synchronous motor power factor is high, but its speed has nothing to do with the load size, only depends on the line frequency. Work is more stable. In require wide scope speed regulation occasion more use dc motor. But it has a commutator, the structure is complex, the price is expensive, maintenance is difficult, not suitable for bad environment.

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Self-feeding drilling heads’ development culture history and classification

Self-feeding drilling heads for machine tool industry friends won’t feel strange, processing method of the tool for our earliest can be traced back to ancient drilling technology, drilling technology is actually The Times is a it is often used in daily life of a kind of a way for the corresponding object processing, from the industrial revolution in Europe until now the rise of modern industrial development to our electrical and mechanical industry, power technology has been around the borehole drilling technology, along with the progress of modern science and the deepening development of industry technology, machined part elaboration and complications in the processing industry, the processing requirements for drilling power head, has greatly improved, especially the precision as the technology improve machining efficiency increases, for all types of drilling power head products in the industry high rotation speed and axial has quickly become a required element of the machine tools, in except to machining center machine mechanical composite technology for common machine tool products have been developed by early horizontal processing way, in the form of more for machine tools on the drilling power head also produced a variety of changes, as some of the blades, a handstand, car milling compound model was popular at that time.


Self-feeding drilling heads across the industry development is to comply with the demand of era of the new processing way for evolution, in this process, a new concept of compound machine is a new technology of combination of tools, its major advantage is that can be easily through the drilling power head on the same machine to make complex parts processing operations, at the same time also can rely on it for a series of drillingtappingmilling,  the degree of micro hole machining methods of work, in the current drilling power head by a mechanical machinery market can be completed before a series of complex parts processing craft, can greatly save on cost and time, in today’s drilling power head processing industry market the spread of new technology and new concept in the research and development department of the factories are in full swing in progress, in either C axis, Y axis degrees or vice spindle head need to match the drilling power head can be equipped with the basic function of the machine tool, drilling power head as a modern machine tools has become one of indispensable processing components, it also makes the functions of drilling power head more diligence is more perfect. We can see that from the perspective of the industry development history of drilling power head of the evolution of the current very mature, believe in its future development will be more advantages.


Self-feeding drilling heads to analyze the market at present, at present is mainly divided into the borehole drilling tapping head and head of these two categories, under this column don’t have some branch model of small class, according to the different machining occasions needed to adapt to different drilling requirements.