Motion accuracy
The accuracy of the main components of the machine tool when moving at working speed. For example, a spindle that rotates at a high speed changes its position at the center of rotation due to a change in bearing manufacturing or a change in the thickness of the oil film, resulting in "spindle axis drift". Motion accuracy also includes component trajectory accuracy and speed non-uniformity (or creep), as well as drive chain accuracy for threading machines and gear processing machines.
Machine static stiffness to resist an applied force to generate static deformation capacity, the ratio of the amount of deformation following the static forces generated by the force represented by (N / m). In practice, it is also commonly used to indicate the degree of staticness, which is defined as the reciprocal of static stiffness. When the torque acts on the machine tool or its components, the amount of deformation is angular displacement, and the torsional stiffness is expressed in cow·meter/radian. Under the action of cutting force, gravity and clamping force, the machine tool not only produces tensile, bending or torsional deformation of the parts, but also causes contact deformation between the contact surfaces of the parts (in terms of contact stiffness). Relatively large. The static stiffness of the machine tool is related to the structural design of the component and the quality of the manufacturing assembly. It not only affects the machining accuracy, but also affects the dynamic stiffness of the machine tool.
Dynamic stiffness
The stiffness of a CNC vertical honing machine tool under the action of a sinusoidal alternating load (exciting force) that varies in frequency. The dynamic stiffness is numerically equal to the ratio of the exciting force to the machine amplitude. The common unit is cow/micron. The reciprocal of the dynamic stiffness is called the dynamic compliance. Machine tools, workpieces and tools are an elastic system. The ratio of dynamic stiffness to excitation frequency to the natural frequency of the system is related to the damping characteristics of the system. When the ratio of these two frequencies is close to 1, the resonance is caused, and the dynamic stiffness is minimum. . The mechanical vibration generated during the operation of the machine tool will lead to deterioration of the quality of the machined surface, accelerate tool wear and reduce productivity, and in serious cases, the machine tool will not work properly.
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About high speed Door Accessories:
1.Driving system: High Speed Door Servo System motor and control, motor SNMA / SEJ +reducer+flang+encoder+control box
2.Other accessories: Middle aluminium bar, bottom aluminium bar, aluminium vertical track, stainless steel vertical track, brushes,round nylon strip, PVC roll, rolling steel tube complete, drum be;;s for rolling tube, side end covers, stainless steel cover, steel tubes, air bag sensor system, safety light beam, Microwave sensor 24 Gigahertz,PVC welding machine, smoke and fire sensors, PVC transparent window, magnetic loop, photocell, remote control, manual push button, sound warning alarm Led lamp traffic light
For some main accessories, here is detain introduction:
1).24G radar sensor:
Brand: Hofic
Technology: Microwave processor
Maintain time: 0.5s
Protection: IP54
Transmitting frequency: 24.125GHz
Maximum installation height: <5meter
Transmitting power density: <5mw/cm2
Power consumption: <1W(VA)
Installation angle: 0-90°(lengthways) -30-30°(crosswise)
Supply voltage: AC&DC 12V-30V
2).Photocell:
Approval CE & ISO9001
Power supply AC/DC 12-30V
Static current 25A
Action current 40mA
Mounting distance Max 10m
NO or NC contact Done by NO./NC. contact selection
Working environment temperature -42℃ to +45℃
Working environment humidity 10 to 90%RH
Appearance dimensions( controller) 123*50*32mm(L*W*H)
Appearance dimensions(Magic eye head) 19*13mm(L*D)
3). Remote control
Operating Voltage: AC220V/50HZ+-20%
Transmit power:≤100mW;Super regenerative module, strong anti-interference
Operating temperature:-30℃-+70℃
Working frequency: 433MHZ;transmitter 1527, millions of encoding chip
Accept sensitivity:≤110dB
Manipulation method: electric remote control
Configure the quantity: Wireless number; factory configuration transmitter two. Can be equipped with PT2272 digital decoder chip
Configure the function: Up, down, stop, anti-lock full-featured reproduction
4). Magnetic loop
Voltage: 12V AC/DC +-10% 24V 115V AC+-10% 230V
Power: <2VA
Continued electrical output: 7A / 250V AC
Frequency range: 20 to 200K Hz
Response time: infinity (factory setting) or adjust maintain time
Sensitivity: 0.01% to 0.1% divided into 3 levels
Protection level: IP30
Electromagnetic compatibility (EMC) Complies with EM50081-1 and EN50082-2
Detection loop inductance: the limit of 40uH to 100uH ideal value 80uH to 300uH
Operating temperature: -25 ℃ to 70 ℃
Storage temperature: -40 ℃ to 85 ℃
Relative humidity: <90% non-condensing
Temperature compensation: automatic compensation up to 50 ℃ / h
Connection type: 11 pin DIN rail socket
Dimensions: 41 * 78 * 85 mm (width * height * length)
Weight: 250 grams
5). manual push button
This exit switch button is made of ABS and has built-in indicator light make it looks more elegant and fashionbale. It can be widely used in public entrance gates, public door, home, office, hotel, etc.
Door Exit Button Push To Exit Switch Door Opener For Access Control Security
Main Feature
Fashionable appearance
Made of ABS Plastic
Easy to install and operate
Used for access control
Specification
Mechanical Life: 500,000 test
Material: Plastic
6). Limit switch encoder
Voltage: DC5V-24V
Output voltage: high voltage≥85%Vcc, low voltage≤0.5V
Maximum mechanical speed:6000rpm
Anti-vibration: 50m/s,10-200HZ,XYZeach way 2 times.
Current consumption:≤30mA
Response frequency: 0-100KHZ
Protection: waterproof,oil proof,dust prevention, IP54
The output code system: binary code
Operating life: MTBF≥30000(+25℃,2000rpm)
Rotational inertia:4.0x10-8kgm²
Maximum load:radial direction20N
Axial direction:10N
Weight: about 0.4kg
High Speed Door Accessories,High Speed Door,Electronic High Speed Door Accessories
Shenzhen Hongfa Automatic Door Co., Ltd. , https://www.hfrollershutterdoor.com