Drill chuck
Drill chucks are the main components of electric drill power tools, accounting for 10%-15% of the cost of electric drills. The common key drill chucks have achieved remarkable results in the development and production of lightweight and hand-tight drill chucks.
A hand-tight, self-tightening chuck has an important indicator that the output torque of the drill chuck can be greater than 90% of its input torque.
High-end drill chucks are mainly used in demanding professional power tools, bench drills, etc. The demand for high-performance self-locking drill chucks and heavy-duty wrench drill chucks is increasing. The high-performance self-locking drill chuck has the characteristics of high precision, high technical content, high added value and high efficiency. It is mainly matched with impact drills of more than 850W and 24V DC impact drills in professional power tools.
Since the quality performance of the power tool is improved, it is required to perform the drilling operation reliably in the case of vibration and impact. Therefore, the matching drill chuck is required to have a locking function, and the tool such as the drill bit held by the electric drill can be ensured. Take off. The global self-locking drill chuck is expected to have a demand of approximately 19 million by 2010.
2. High-end drill chuck features
The United States Jieke Bosch chuck manufacturing company, Germany ROHM (ROHm) company's hand tight, self-tightening drill chuck, advanced performance. ROHM's EXTRA drill chuck features include:
The chuck housing is made of engineering plastics, which is light in weight and environmentally friendly. It also has a metal collet, which has high strength and good rigidity. The coaxiality of the collet is high, which ensures the processing precision. The collet head has a hexagonal head, which is very easy. The chuck is mounted, fastened and disassembled; the top of the chuck is equipped with a rotating dust jacket, which has the dual function of preventing dust and debris from being inserted into the chuck during operation and the operator can be used to support the drill chuck to work more stably; the jaw Specially hardened, the strength is extremely high, the drill bit rotates in the jaws when the drilling force is too large, but the jaws are not damaged
The chuck has a clamping force signal function. When clamping the drill bit or working, when the clamping force reaches a certain value, the hair is “clickâ€, telling the user that the drill bit is fully clamped and the tool can be used absolutely safely. As the clamping force increases, the drill can make three “beep†sounds, corresponding to three different clamping forces, and the drill can be used absolutely safely in any of the three clamping forces.
This clamping force signal allows the drill chuck to operate at optimum clamping force and safety, greatly extending the life of the chuck. And the clamping force signal gives the user a very good feeling, making it extremely easy to judge whether the chuck reaches the optimal clamping force and safety state, thus avoiding insufficient clamping force, bit slip and excessive clamping force damage. Drill accident.
The chuck also has a dust leakage hole, which can leak the dust and debris embedded in the chuck during the work, thereby ensuring the operability of the tool and prolonging the service life of the chuck and the drill bit.
Sub-controller of LED applying system. The DMX-S8 receives the pixel data frame sent by the RTP-S1500 Main Controller. According to the address set by itself, the corresponding data in the pixel frame is taken out. After the format is adjusted, the data is sent out from the controlling port at a specific timing sequence to control the LED light to change color. Set up 2 RJ45 network interfaces; When using unshielded Twisted Pair, the distance of transmission from the main controller to the sub-controller and sub-controller to sub-controller is more than 100 meters; Connect to the switch for network to extend the distance of transmission; Single controller can connect up to 16 computer; Automatically identify its position in the system; Set up 8 DMX512 controlling ports with auto-addressing function. The number of single-port controlling pixels is 170 full-color pixels, 512 monochrome pixels, and the type of connector is the pluggable terminal; Each port conduct optical isolation protecting to ensure the stability of the entire controlling system;
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