Q:Hope to find a complex tool to do good enterprises, especially broaches do good, quality and Harbin first tool factory and other veteran manufacturers almost or almost no, but the price is relatively cheap, a lot of, thank you

If the broach requires high accuracy. Find a good factory. If you are producing or looking for cheap private companies, you can use the same price difference.

Q:CNC Lathe Feed base surface is floating, there is no good way to solve?

I've been troubled by this problem for a long time. Just as if the needle and double processing, the depth of the top pinhole inconsistency is unable to determine the base. It's impossible for every piece of work to have a knife once,

Q:5.6 small caliber gun rifling production line with much manual broach

The general value of deep rifling line diameter of the gun bore 2%. 5.72 or 5.75 arrows that broach,

Q:Why don't carbon tools steel be used to make Broaches and gear cutters?

Because of its hardness is too high, easy to crack, and if you do gear cutters and broaches, not only a few times will collapse.Therefore, Broaches and gear cutters must be cemented carbide.The carbon content of carbon tool steel is high, between 0.65-1.35%, and belongs to sub eutectoid, eutectoid or eutectoid steel. The carbon tool steel can get higher hardness and wear resistance after heat treatment, and the core has good toughness. The annealing hardness is low (not more than HB207), and the processing performance is good. However, when the working temperature reached 250 DEG C, the hardness and wear resistance of steel decreased rapidly, the hardness decreased to below HRC60, and the hardenability of this kind of steel was low. Larger tools can not be quenched (water quenched by 15mm), and when water is quenched, the hardness of the surface hardened layer differs greatly from that of the central part. Cause the tool to deform easily when it is quenched. In addition, the range of the quenching temperature is narrow and the temperature should be strictly controlled during quenching. Prevent overheating, decarburization and deformation.

Q:Ask, what does broach mean?

Gold is a skill with physical attacks, called with tremendous effort

Q:Is there an expert who knows the broach?!

The rotary joint is connected and air cooling water in the water and gas into the rotary joint before all the way with the on-off valve, OTT rod which is provided with holes, similar to the valve, the locking rod cutter, shift lever, waterway connected, pneumatic on-off valve closed, the water is turned on. The coolant through the tool cooling hole nozzle. Similarly, when the rod is loose, the pull rod is pushed forward first, the air path on the pull rod is connected, and the waterway is closed, and the cone and the end face of the main shaft are blown and cleaned at this time.

Q:Is this a standard part, or is it only required to buy the finished products from other factories, or do you want to design and size it yourself?

Standard parts can be purchased. It is better to bring the old parts with them or to provide the corresponding machine tools

Q:Why is the tooth shape of broach oblique?

The tooth is made oblique in order to make the broaching cutter tooth is smooth, continuous in withdrawing from participation in the cutting, does not appear at the same time the whole circle cutter tooth cut, and the exit, so as to avoid broaching in appeared in the process of broaching flickering phenomenon, so as to obtain good cutting surface, too to improve the service life of the broach broach. But make oblique to the high cost.

Q:Pull the rifling when rotating or broach tube rotation or both rotation??

The pipe is fixed and the cutter head can be taken into consideration with the percussion drill at the top of the drill bit, not knowing what exactly. Only know that grinding, and pull a tube, do not rub, do not change the knife!

Q:Microcrystalline stone tile for broach can open it

The microcrystal surface will collapse