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How can casting factory have the advanced technology level
A. Clean up and finishing
Foundry to improve efficiency, quality, processing speed, to reduce costs at the same time, must find ways to reduce casting cleanup job personnel, only improve the technology to achieve this goal.
Before to increase the polishing equipment investment, must carefully study how to reduce cleaning and finishing operations (such as burr, riser, gate and core), the root cause is the mold design and repair, sand, management, mold hardness and uniformity, casting methods, application of the method, the gate of the scheme, equipment maintenance, etc.
When it comes to batch and mass production of the factory has developed several means of improving efficiency. Mainly include:
Reduce clean-up workers, for many times repeatedly the workload using manipulator. Robots can with manual operation of the same small castings closed operation, large casting cleaning tools can be used for casting cleaning.
Pieces in some cases, can use the cutting machine or trimming press, separate the gate and casting
Pieces can be widely used trimming press excision of parting surface flash and burr, etc., robots can be used for trimming press unloading workpieces. Small-sized castings with vibration type feeder automatically distinguish and sent to the appropriate area.
Pieces can be set in the surrounding of the rotary worktable multipurpose cleaning tools, polishing, cutting, shaping, machining operation, etc. Rotary worktable in order to adapt to choose operation and unloading workpieces, can be a more reliable location.
Mixer gate and riser impact hammer, wedge iron, cutting machine, etc, these repeated operation in its position, such as reliable to control it with tooling, can realize the dynamic change of orders.
In small batch production can use the following effective measures:
Mixer to reduce fatigue and dangerous cleaning , modernization and improve the efficiency and quality.
Mixer using lifting and tilting device operation, the operation is milled, everything cool, hanging hose, balancing tools, as well as lighting and ventilation to improve operating conditions.
Pieces of castings from the work sites in and out, using conveyor.
Mixer adopts packing, will increase the height of the appropriate casting.
Now in fettling ministry, shot blasting cleaning is the most widely used in roller shot-blasting machine. This device is within the scope of 5-100 cuft have of various sizes. This way of shot peening is completely automated, because human use minimal, it is very economic. The device of castings using the high-speed flow of abrasive cleaning in the drum, cleaning effect is good. Use roller shot-blasting machine for a long time, because of the chain conveyor, the parts are the possibility of failure, in addition, the chain and drum parts wear, also need repair charge. But new technology is to assembly instead of chain roller roller, vibration make the workpiece before and after by a proper reverse it. Therefore, no fault, also not like roller chain shot blasting machine, need high repair cost problem. The design of the device, suitable for the production of a variety of casting foundry, can clean up continuously. Such the limiter device, can be into the casting restriction, thus can make the most difficult to clean casting can also be appropriate. Shot blasting, roller is one of the problems of thin wall and small iron castings and nonferrous castings, appear damage due to collision between each other. To this end, the recent introduction of new technology is to use high-speed impacts on vibration shot blast cleaning, can be said to be composite pile group also clear the way. This technique is to use the conveyor transport all kinds of castings, which collided with each other, actively clean-up for the casting, the casting in abrasive flow, make the casting of the external, internal friction can be smoothly. This approach has the advantage of processing abrasive flow center job, there will not be the result of the injection excess waste abrasive.
Engine cylinder block, cylinder head and valves and other large has a complex core of castings, generally adopt the mode of rotating hook, with monorail conveyor, will hang casting one or several rotate blast cleaning. This way you can finish for the castings of comprehensively, blasting shock from many Angle, also can prevent castings from internal channel abrasive congestion.
In addition, useful jigs rotate injection, to spin casting comprehensive way. Also useful special cover fixture using the way of the manipulator.
Now with trimming press can automatic loading and unloading of castings, remove most of the burr, can further increase its function; Assemble into automatic milling, drilling, the kinetic energy of the inspection, measurement, etc. In tool design progress at the same time, this equipment can be used for ductile iron, gray iron, aluminum castings, etc., according to the size and shape of the casting can make the speed of processing more than 900 per hour.
Due to the tool price is expensive, trimming machine used for automatic cleaning device, is used only for high speed casting. But at least 2 factories in flexible automation device automatic cleaning department adopted the CNE. This way slower processing speed ratio not trimming press 1.5 3 times, but the plants do not require high tool, using similar Custodial controller material processing equipment, using ordinary manipulator, homework quickly and wear-resisting.
Using the device, such as cleaning castings only, but by images and manipulator instruction, input the computer program. This manipulator is used in the chamber with manipulator, and the design of the cutting, deburring device new polishing machine. This new design goals to achieve shear blade abrasion loss is the most appropriate, high cutting efficiency, casting cleaning engineering of high comprehensive ability.