Analysis of CNC Machine Tool Errors and Causes
1. CNC machining machine 1, CNC machine tool error caused by its own processing error: control system error; machine tool feed transmission system error 2, the manufacturing process caused by the processing error: processing process arrangement is not reasonable; tool cut-out point selection inappropriate 3, the workpiece Errors resulting from positioning 4. Errors caused by irrational programming 2. High-precision numerically-controlled machine tool 1. High-precision CNC lathe out of the car. The outer circle is a cone: the connection between the front and rear tops is not coaxial with the axis of the spindle. It is the end of the CNC lathe. Block center is not caused.
2. Vibration generated by the workpiece during turning of the CNC machine tool: it may be that the tailstock sleeve is extended too long or the workpiece top is too loose. It may be that the turning tool is not sharp enough or the arc of the cutting edge is too large, or the bearing clearance of the turning top is large. Or the gap between the medium and small skateboards is too big.
3, the circle can not meet the requirements: the top of the shaft has been with the axis of the spindle or the rotation of the top bearing wear caused by the circular runout, the center hole of the workpiece is not clean or the center hole collision hair, Ji Xin head of the card touch card The end face of the disc does not function as the center hole. 4. The center hole of the high-precision CNC lathe is severely worn or bitten: It may be that the fixed tip is not lubricated or the spindle speed is too high, or the pliers are not clamped when turning. The workpiece has stopped rotating.
The source of error when using CNC machined parts is very complex. Only by properly grasping the principle of CNC machine tools and strengthening the process knowledge of operators can we solve the problem of machining error of CNC machine tools and improve the accuracy of CNC machining to produce qualified products. product.
Brominated flame retardants (BFRs) are organobromine compounds that have an inhibitory effect on the ignition of combustible organic materials. Of the commercialized chemical flame retardants, the brominated variety are most widely used. They are very effective in plastics and textile applications, e.g. electronics, clothes and furniture. BFRs are commonly used in electronic products as a means of reducing the flammability of the product.
Types of applications
The electronics industry accounts for the greatest consumption of BFRs. In computers, BFRs are used in four main applications: in printed circuit boards, in components such as connectors, in plastic covers, and in cables. BFRs are also used in a multitude of products, including, but not exclusively, plastic covers of television sets, carpets, pillows, paints, upholstery, and domestic kitchen appliances.
Brominated Flame Retardant Compounds
Decabromodiphenyl oxide(DBDPO)
1163-19-5
Ethane-1,2-bis(pentabromophenyl)(DBDPE)
84852-53-9
Ethylene bis-tetrabromophthalimide
32588-76-4/5
Tetrabromobisphenol A(TBBA)
79-94-7
Hexabromocyclododecane(HBCD)
3194-55-6
Tetradecabromo- diphenoxybenzene
58965-66-5
Brominated Polystyrene
88497-56-7
Brominated Polystyrene
88497-56-7
Tetrabromophthalate diol(TBPD)
77098-07-8
20566-35-2
Tetrabromophthalic anhydride(TBPA)
632-79-1
Brominated Epoxy
68928-70-1
Poly pentabromobenzyl acrylate
59447-57-3
2,3,4,5,6-Pentabromobenzyl acrylate
59447-55-1
Ammonium Bromide
12124-97-9
2,4,6-Tris(2,4,6-tribromophenoxy)-1,3,5 triazine
25713-60-4
Tris(tribromoneopentyl)phosphate(TTBP)
19186-97-1
Tribromoneopentyl alcohol(TBNPA)
36483-57-5
1522-92-5
Dibromoneopentyl glycol(DBNPG)
3296-90-0
2,4,6-tribromophenol
118-79-6
TetrabromobisphenolA Bis(2,3-dibromopropyl ether)(BDDP)
21850-44-2
Carbonate Oligomer of Tetrabromobisphenol A (BC-52)
94334-64-2
Carbonate Oligomer of Tetrabromobisphenol A (BC-58)
71342-77-3
Tetrabromobisphenol A bis(allyl ether) (BE)
25327-89-3
Tetrabromophthalate Ester(TBPE)
26040-51-7
Bis(Tribromophenoxy)Ethane (BTBPE)
37853-59-1
Polydibromostyrene
148993-99-1
1,3,5-Tris(2,3-dibromoisopropyl) isocyanurate(TBC)
52434-90-9
Tribromophenyl allyl ether (TPE)
3278-89-5
Brominated Flame Retardant Chemicals,Brominated Flame Retardant Materials,Decabromodiphenyl Ethane,Substitution Of HBCD,Tetrabromophthalate Diol,Brominated Polystyrene,Tetrabromobisphenol A
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