Different from other machine tools, the other structural feature of the broaching machine is the rigidity, which is to match the high precision control of the control system in order to adapt to the high-precision machining. Compared with the traditional broaching machine, CNC broaching machines generally use inlaid steel guide rails, so that the precision of the broaching machine can be maintained for a long time, and its service life can be extended for a long time.
Due to the high price of the CNC broaching machine and the long life of the control system, the slide rail of the CNC broaching machine also requires good wear resistance. The vertical broaching machine says that because the two-direction movement of the NC broaching tool rest is respectively driven by two servo motors, its transmission chain is short. It is not necessary to use transmission parts such as hanging wheels and light bars, and the servo motor is directly connected with the screw to drive the tool holder. Servo motor screw can also be connected with timing belt or gear pair. The NC broaching tool rest generally uses ball screws. The ball screw is one of the key mechanical parts of the CNC broaching machine. The rolling bearing installed on both ends of the ball screw is a dedicated uranium bearing. Its pressure angle is much larger than the commonly used centripetal thrust ball bearing. This special bearing pairing Installation is optional, and it is best to be paired when the bearing leaves the factory. In order to drag lightly, the lubrication of the CNC broaching machine is relatively full, and most of them are automatically lubricated with oil mist. CNC broaching machine also has the characteristics of full processing cooling, strict protection and so on, and it is generally in the fully closed or semi-closed state during automatic operation.
The broaching machine is a kind of machine tool processed by a broach. It is mainly used to process through holes, planes and forming surfaces. Therefore, in practice, it is worth paying attention to each user for broaching, which will directly affect the broaching machine. In the later period of normal use, Xiaobian first gave you a brief introduction about the composition of the broaching broach and the role of each part. The broaching broaching tool is mainly composed of two parts: the working part and the non-working part.
1, part of the work
1) Cutting part: The cutting part has a lot of cutter teeth and plays a cutting role. The tooth diameter increases from tooth to tooth, and it removes all the machining allowance.
2) Calibration section: The cutter on the calibration section plays a correction role. The number of teeth is small, and each tooth has the same diameter.
2, non-working part
1) Handle: Hold the broach and transfer power.
2) Neck: The connecting portion between the neck and the rest of the neck, the diameter of which is the same as or slightly smaller than the diameter of the shank. Broach materials, size specifications and other marks are generally hit the neck.
3) Transition cone: The transition part between the leading part and the neck part of the neck is used for centering.
4) Leading part: Before the cutting part enters the workpiece, it plays a guiding role to prevent the broach from being skewed. It can also check whether the workpiece hole is too small before pulling, so as not to damage the first blade of the broach.
5) Rear guide: Hold the last correct position of the broach to prevent the workpiece from sagging and damage the machined surface and the teeth when the broach is about to leave the workpiece.
6) Rear bracket: For long and heavy broaches, a tail (rear bracket) is also required behind the rear guide. Its diameter D depends on the size of the broaching tray, length l = (0.5- 0.7) D tail. However, the general requirement is not less than 20 mm.
Due to the high price of the CNC broaching machine and the long life of the control system, the slide rail of the CNC broaching machine also requires good wear resistance. The vertical broaching machine says that because the two-direction movement of the NC broaching tool rest is respectively driven by two servo motors, its transmission chain is short. It is not necessary to use transmission parts such as hanging wheels and light bars, and the servo motor is directly connected with the screw to drive the tool holder. Servo motor screw can also be connected with timing belt or gear pair. The NC broaching tool rest generally uses ball screws. The ball screw is one of the key mechanical parts of the CNC broaching machine. The rolling bearing installed on both ends of the ball screw is a dedicated uranium bearing. Its pressure angle is much larger than the commonly used centripetal thrust ball bearing. This special bearing pairing Installation is optional, and it is best to be paired when the bearing leaves the factory. In order to drag lightly, the lubrication of the CNC broaching machine is relatively full, and most of them are automatically lubricated with oil mist. CNC broaching machine also has the characteristics of full processing cooling, strict protection and so on, and it is generally in the fully closed or semi-closed state during automatic operation.
The broaching machine is a kind of machine tool processed by a broach. It is mainly used to process through holes, planes and forming surfaces. Therefore, in practice, it is worth paying attention to each user for broaching, which will directly affect the broaching machine. In the later period of normal use, Xiaobian first gave you a brief introduction about the composition of the broaching broach and the role of each part. The broaching broaching tool is mainly composed of two parts: the working part and the non-working part.
1, part of the work
1) Cutting part: The cutting part has a lot of cutter teeth and plays a cutting role. The tooth diameter increases from tooth to tooth, and it removes all the machining allowance.
2) Calibration section: The cutter on the calibration section plays a correction role. The number of teeth is small, and each tooth has the same diameter.
2, non-working part
1) Handle: Hold the broach and transfer power.
2) Neck: The connecting portion between the neck and the rest of the neck, the diameter of which is the same as or slightly smaller than the diameter of the shank. Broach materials, size specifications and other marks are generally hit the neck.
3) Transition cone: The transition part between the leading part and the neck part of the neck is used for centering.
4) Leading part: Before the cutting part enters the workpiece, it plays a guiding role to prevent the broach from being skewed. It can also check whether the workpiece hole is too small before pulling, so as not to damage the first blade of the broach.
5) Rear guide: Hold the last correct position of the broach to prevent the workpiece from sagging and damage the machined surface and the teeth when the broach is about to leave the workpiece.
6) Rear bracket: For long and heavy broaches, a tail (rear bracket) is also required behind the rear guide. Its diameter D depends on the size of the broaching tray, length l = (0.5- 0.7) D tail. However, the general requirement is not less than 20 mm.
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