Clutch chafes piece efficient treatment

5mm is thick 45 armor plate are become via heat treatment 4552HRC, production lot is bigger. Pursue 1 this is one rushs cut into parts reach figuration is compound, because production lot is bigger, use according to appropriate of spare parts structure strong cut into parts reach figuration compound model. The basis develops formula of the computation that reduce force: The τ in type of τ of P = KLt -- shear strength, take 500N/mm2 L -- strong cut into parts circumference, mm T -- material ply, mm K -- safety factor, take 1.

3 generation enter a spare parts relevant data, calculable piece: Chafe a strong P=1 that reduce force.

3 × 3.

14 × (80+20) × 2.

Punching of basis of 5 × 500=510kN, fall experience of makings stripping force is formulary: Discharge of the K in type of P of discharge of P discharge = K -- for stripping force coefficient, take 0.

06P -- punching, fall makings always rush reduce force, n generation enters a spare parts relevant data, calculable piece: Chafe a =0 of discharge of stripping force P.

06 × 510=30.

Computation of force of 6kN basis figuration is formulary: B of σ of P = KLt among them σ B -- data tensile strength, take 65kg/mm2 L -- the circumference of figuration part, mm T -- makings is thick, mm K -- for figuration coefficient, take 0.

8 generation enter a spare parts relevant data, calculable piece: Chafe a figuration force P into =0.

8 × 2.

5 × (4 × of × of 2) of × of 10 × 2+12 65=229kN reason chafes a punching, fall compound force is makings, figuration: 510+30.

6+229=770kN, natural beard chooses the compressor of 770kN above. According to the other side manufacturing facilities can choose JC23 only - 40 type double column but bend compressor, want to execute punching, fall makings, figuration is compound, punching power is apparently insufficient, the simple working procedure that if will complex process adjusts the pace that it is cent,carries out, be sure to make produce loss of efficiency, cost to rise again. According to spare parts structure, its figuration height 1.

5mm is less than makings thick T=2.

5mm, because figuration of this protruding stage relies on material oneself extensibility to be able to reach makings profound change to be able to be achieved only; Because protruding stage and brim of form of spare parts inside and outside are apart from,all be more than again (33.

5)t ＝ (7.

58.

75)mm, reason won't cause edge stuff to shrink toward adduction, cause figuration defect. Afore-mentioned analysises make clear: 4 protruding stage produces local figuration merely. The spare parts falls makings, punching, figuration is compound in the process, the figuration of protruding stage was not necessary early or late ordinal. Mould design reachs chosen JC23 according to the characteristic of spare parts figuration - 40 compressor have dozen of makings rail structure, devised a plan 2 show a pattern. Graph 21.

Upper mould board 2.

Guide-post bushing 3.

Bolster plate 4.

Fixed head 5.

Modular handle 6.

Ejector pin 7.

Hit makings pole 8.

Hit makings board 9.

Punching punch 10.

Separator 11.

Fall makings sunken model 12.

Guide pillar 13.

Punch-die of punching, figuration 14.

Discharge board 15.

Polyurethane piece 16.

Next pattern plate are whole mould job process is: Preform park mould is proper the position, punching machine slide block begins next moving, fall makings sunken model 11 with discharge board 14 collective preform impaction, as punching machine slide block next moving, fall makings sunken model 11 with punch-die of punching, figuration 13 action, fall again when slide block move after 3mm, spare parts appearance rushs, right now, separator 10 coping just with fixed head 4 bottoms carry a contact, continue to move when slide block 1.

5mm, separator 10, punching punch 9 with punch-die of punching, figuration 13 joint action, finish mid what the figuration of 4 protruding stage reachs aperture of intermediate φ 20mm is strong cut into parts. So far, inside the spare parts, appearance and protruding stage are complete figuration. Move on slide block, hit makings pole 7 hit makings rail barge against with compressor, stripping force classics hits makings pole 7 pass at hitting makings board 8, again classics ejector pin 6 pass to separator 10, by separator 10 good treatment parts are pushed grow makings sunken model 11 model antrum, meanwhile, to a makings classics discharge that decides an external form board 14 action, finish a makings, more than makings turns into loop of below one job. In the mould, separator has the double function of figuration protruding stage and discharge, rotate to prevent separator, the design becomes all directions structure that takes oriented, fixed position, and it and fall antrum of makings sunken model assures bosseyed clearance 0.

030.

05mm, in order to assure figuration accurate, discharge is reliable. The high dimension of figuration protruding stage by separator relevant figuration dimension is decided. Grind the plane on punch-die of punching, figuration through repairing, can adjust figuration height dimension, assure figuration precision thereby. After the effect and conclusion mould design are finished, via making, try a model, manufacturing spare parts is one-time accord with design requirement. Through the use that comes 3 many years, manufacturing spare parts is counted, job of product quality stability, mould is reliable. Here, small tonnage compressor can one-time treatment gives a part, from the mould working principle can see structure of mould of main profit from is designed when, fall makings sunken model 11 than separator punch of 10 thick 3mm, punching 9 expect than falling sunken model 11 hind 3mm and preform contact, form a flight of stairs model strong cut into parts, make fall makings sunken model 11 finish fall after makings, separator and punching punch just begin to contact preform, become form and punched hole after that. Right now, strong cut force into parts to be P=1.

3 × 3.

80 × of 14 × 2.

5 × 500=408kN, be more than 400kN slightly, need to choose only some more largish fall makings clearance can be overcome. The adoption of afore-mentioned measure, make fall compound of makings, punching, figuration " rhythm " got be decoratinged afresh, formed a flight of stairs pressure to distributing, thereby, eliminated 3 person compound the pressure overlay after, make compressor falls the contradiction with insufficient join forces of makings, punching, figuration answer gets be settlemented at all. Producing actual in, divide a flight of stairs model strong outside cutting into parts, different inclined blade structure is used on punch, sunken model, form inclined blade to rush cut into parts, can reduce the strong 40%80% that reduce force, nevertheless this structure point is made reach long grind more complex, point is easy wear away, basically apply to large reach thick makings workpiece. If workpiece surface quality asks to also can be used not high,heat strong cut into parts, make through heating data shear strength is reduced apparently, and add favorable opposition to cut into parts appropriately or drawing is the protruding that wait, sunken modular clearance, all can better land is reduced strong reduce force, to small tonnage compressor treatment gives the effect of large part since. CNC Milling