Brass axis core is pushed cut Fang Kongmo

5 times, satisfied the manufacturing requirement of the enterprise. Graph the core of axis of brass of form of a flight of stairs that 1 graph shows 1 times is the part of an axis core that draws a hand to go up, material: ? Fall forward 68, its market demand is quite big. This spare parts is the part of body of a flight of stairs that has 2 steps leading up to a house, there are a 8 × in the center of the square deep aperture of 8, everywhere round horn radius is lesser, clear-cut. To be the same as type spare parts, abroad uses multitask cold extruder undertakes extrusion, but limitation of condition of equipment of domestic be confined to, reason is multi-purpose cutting machines production. Cutting treatment can produce a part that obtains spare parts precision and exterior quality requirement, but efficiency of cutting treatment production is low, go against large quantities of quantities to produce. Program of 1 treatment technology 1.

Cutting, bore, milling machines turning Ø19.

2 diameters, tolerancepublic errand asks to be in - 0.

07 ～ - 0.

2: Turning Ø16.

The step of 9: Cut off: Go burr: Bore (Ø7.

8) : Milling 8 square of 8 × are deep aperture: Go burr. This kind of plan because working procedure 6 in milling square aperture, manufacturing efficiency is very low, cannot satisfy large quantities of quantities to produce demand. 1.

Modular handle 2.

Punch 3.

Punch fixed head 4.

Discharge board 5.

Fixed position piece 6.

Fixed head of fixed position piece 7.

Sunken model 8.

Motherboard of sunken model fixed head pursues 22.

Cutting, bore, punch promotes the brass semifinished product that cuts treatment to cut off Ø20, length is 22.

5: Bore (Ø7.

8) : Punch pushs cut 8 × 8 square deep aperture: Car Ø19.

2 external diameter, tolerancepublic errand asks to be in - 0.

20 ～ 0.

07: After tune, car Ø16.

9 step, go burr. Case of this one party replaces milling with the means of punch, can complete this process quickly, manufacturing efficiency is taller. Analytic graph shows 2 moulds 2 times to provide design of fixed position piece to consider spare parts punch is pushed for punch model after cutting expand element, dimension of place less than antrum should compare real take shape external diameter is a few bigger. Working height spends H to choose the job to take height to choose should proper, it is advisable to take workpiece height to add 1 ～ 2mm commonly, and nap is made when trying a model, if the job takes height to had been been worth big, force increases meeting metabolize: If the job takes height to had been been worth small, can cause workpiece to bend. Mould material choice and its heat treatment are long and thin aperture as a result of this brass axis core outside spare parts of body of a flight of stairs, accordingly, sex of He Ren of the stiffness that the pattern must consider when mould material chooses, intensity, wearability, the craft that still must consider H68 brass at the same time is characteristic. Good heat treatment of Gr12MoV temper by dipping in water is used to serve as punch, sunken model and fixed position to secure a material to 58 ～ 62HRC in this craft, in order to obtain intensity and tenacity optimal cooperate. The design of discharge board secures discharge board to place go up in lower mould, punch is pushed cut work of the debus after finishing, this punch is pushed above factor considered when cutting a mould to design, in needing to use pincers to put axial core fixed position piece when production, pushing cut after finishing, reoccupy pincers takes out work. Current, technology program 2 devoted already production, because improved manufacturing technology, the form of the product tolerancepublic errand and exterior quality achieve design requirement completely, and case of manufacturing efficiency example 1 rose 2.

5 times, satisfied the manufacturing requirement of the enterprise. CNC Milling