The main goal of hardware die roughing is to pursue the material removal rate per unit time, and to prepare the geometric outline of the workpiece for semi-finishing. In the cutting process, the metal area of ​​the cutting layer changes, causing the load on the hardware tool to change, causing the cutting process to be unstable, the wear speed of the hardware tool being uneven, and the quality of the machining surface to be reduced.
Many CAM softwares currently developed can maintain a constant cutting condition by the following measures, thereby obtaining good processing quality. Constant cutting load. By calculating the constant cutting area and material removal rate, the cutting load and the tool wear rate are kept in balance to improve the tool life and processing quality. Avoid sudden changes in the tool feed direction. Avoid burying the tool in the workpiece. Such as the processing of mold cavity, the tool should be avoided vertical insertion into the workpiece, but should use the tilt down knife way, it is best to use a spiral knife to reduce the tool load; mold core processing should be as far as possible from the workpiece outside the knife and then horizontal Cut into the workpiece. Therefore, the semi-finishing strategy should be optimized to ensure a uniform residual machining allowance on the workpiece surface after semi-finishing.
The optimization process includes calculation of the rough-processed contour, calculation of the maximum remaining machining allowance, determination of the maximum allowable machining allowance, and partitioning of the model for which the remaining machining allowance is greater than the maximum allowable machining allowance. If the remaining machining allowance value in the local milling operation is used as the remaining machining allowance in the semi-finishing, this process can not only remove the corners that are not cut by rough machining, but also complete semi-finishing.
Sectional Door Accessories: motor 220V-380V, control box, spring break device, cable break device , aluminum alloy rope pulley, enhanced shaft bracket, air bag system, duplex enhanced guide wheel bracket.
Detail introduction for above main accessories
1.Motor and controller:
The garage door operator is designed for residential overhead sectional and tilt doors.
The operator memorizes the limit positions and unique braking system that slows the unit down at the end of its travel.
Rolling code remote control with max. 20 pcs hand transmitters.
The operator is equipped with a manual release lever which allows manual operation of the door in case of power failure.
The controller has a security LOCK function which prevents operation of the door from transmitter.
2.spring break device:
Sectional doors are hinged and they bend in the tracks as the door opens and closes. Many of these doors are counterbalanced with extension springs, also designated "stretch springs," and they have seven characteristics. The length is the measurement of all the coils pressed together. This, along with the inside diameter of the coils and wire size - the thickness of the wire from which the springs are made - determine the stretch, the distance the spring is extended - normally half the door height, and pull, the force the spring pulls when stretched its normal length. The type of ends determine how the ends of the spring are mounted. The initial tension is the percentage of pull needed to separate the coils. This is determined by the pitch with which the springs are wound. On sectional garage door springs this is normally 15 percent. For example a 100 pound pull spring requires 15 pounds of weight to separate the coils; when a door is open the two springs will support 15 pounds of door weight without any stretch.
Most extension springs are made of oil tempered wire. These are normally coated or painted. Some springs are made of galvanized wire.
3.able break device:
cable break device ,door hardware
adjustable bottom bracket .
the raw material hot plate
zinc plated
safety device
adjustable bottom bracket
the raw material hot plate
zinc plating
spring safety device ,2" and 3" safety device
once the cable is broken ,this devoice can keep the hurt away from the door falling
4.aluminum alloy rope pulley
Equipment: CNC stamping/punching machine, CNC bending machine, CNC cutting
machine, 5~250 tons punching machines, welding machine, polish machines...
Processed material: stainless steel: copper, carbon steel
Surface treatment: Hot galvanized, polishing
Making process:Stamping, deep drawing,bending, punching, laser cutting,threading,
welding, tapping, riveting, grinding
5.air bag system
It is a safety device. When the door is down to hit something, it will up automatically.
Operation pressure:<3mbar
Battery:CR2032*2
Battery lifetime>1 year
Emission frequency: 315MHZ
Emission power:<10mW
Receiver power source:12V
6.duplex enhanced guide wheel bracket
Determining the right type of sectional door roller for your garage door tracks can be a little confusing, especially when you do not know what you need to look for in a garage door roller. To simplify things, there are two primary things you need to be aware of. First are the actual dimensions of the roller, and second is purpose that you will be using the door for. You can read below about measuring your roller and choosing the right quality of material for your door.
Other Door Accessories,Electronic Door Accessories,Automatic Door Accessories,High Speed Door Radar Detector
Shenzhen Hongfa Automatic Door Co., Ltd. , https://www.selfrepairinghighspeeddoor.com