MULTI AXIS MACHINING DEFINITION
Multi-axis machining should be precisely coordinated multi-axis machining. At present, most control machining equipment can realize five-axis linkage at most. There are many types of such equipment, and the structure types and control systems are different.
MAIN MULTI AXIS MACHINING METHOD
TYPES OF MULTI-AXIS MACHINING
Machining centers are generally divided into vertical machining centers and horizontal machining centers. The most effective machining surface of the three-axis vertical machining center is only the top surface of the workpiece. The horizontal machining center can only complete the four-sided machining of the workpiece with the rotary table. The multi-axis CNC machining center has the characteristics of high efficiency and high precision, and the workpiece can complete the machining of 5 surfaces after one clamping. If it is equipped with a high-end CNC system with 5-axis linkage, it can also process complex spatial curved surfaces with high precision, which is very suitable for forming molds for machining automotive parts, aircraft structural parts and other workpieces. According to the form of rotary axis, multi-axis CNC machining center can be divided into two settings
(1) Rotary axis of worktable.
The advantages of this kind of multi-axis CNC machining machine are: the structure of the main shaft is relatively simple, the rigidity of the main shaft is very good, and the manufacturing cost is relatively low. However, the general worktable cannot be designed too large, and the load bearing is also small, especially when the rotation angle of the A axis is ≥90 °, the workpiece will bring a large bearing torque when the workpiece is cut.
(2) The vertical spindle head rotates.
The advantage of this multi-axis CNC machining machine is that the spindle machining is very flexible, and the worktable can also be designed very large. When using a spherical milling cutter to process curved surfaces, when the center line of the tool is perpendicular to the machining surface, the surface quality of the workpiece cut by the apex will be very poor due to the linear velocity of the vertex of the spherical milling cutter. Turning an angle relative to the workpiece, the spherical milling cutter avoids the apex cutting, guarantees a certain linear speed, and can improve the surface machining quality, which is difficult for the table rotary machining center.
FEATURES OF MULTI-AXIS MACHINING
Multi-axis CNC machining has the following characteristics:
(1) Reduce reference conversion and improve machining accuracy.
The integration of multi-axis CNC machining not only improves the effectiveness of the process, but also because the parts need only be clamped once during the entire machining process, the machining accuracy is more easily guaranteed.
(2) Reduce the number of fixtures and floor space.
Although the price of a single device of a multi-axis CNC machining center is relatively high, due to the shortening of the process chain and the reduction of the number of equipment, the number of tooling fixtures, the floor space of the workshop and the cost of equipment maintenance are also reduced.
(3) Shorten the production process chain and simplify production management.
The complete machining of multi-axis CNC machine tools greatly shortens the production process chain, and because only the machining tasks are handed to a work position, not only simplifies production management and planning and scheduling, but also significantly improves transparency. The more complex the work piece, the more obvious its advantages over traditional production methods with dispersed processes. At the same time, due to the shortening of the production process chain, the number of work-in-progress must be reduced, which can simplify production management, thereby reducing the cost of production operations and management.
(4) Shorten the development cycle of new products.
For enterprises in the aerospace, automotive and other fields, some new product parts and forming molds have complex shapes and high precision requirements. Therefore, multi-axis CNC machining centers with high flexibility, high precision, high integration and complete machining capabilities can It solves the problem of precision and cycle of complex parts machining in the development of new products, greatly shortens the development cycle and improves the success rate of new products.
ADVANTAGED MULTI AXIS MACHINING SERVICES IN CHINA
Multiaxis machining can dramatically increase a shop’s competitiveness, and ptj shop’s multiaxis machining services offers a wide range of multiaxis machining strategies – both basic and advanced. With ptj shop’s multiaxis machining services, users have control over the three crucial elements of multiaxis machining: toolpath types, tool motion and tool axis.
PTJ shop’s multiaxis machining offers many toolpath types and features to simplify programming including:
- Machine 5-axis parts using spiral, zigzag or one-way tool motion
- Swarf fanning and swarf machining over multisurface floors to keep the tool edge against the drive surface for a smooth finish
- Multisurface 5-axis roughing and finishing, including depth cuts, plunge roughing and flowline machining
- Minimum tilt control, which helps prevent tool motion that would cause toolholder collisions
- Special options for machining cylinder heads and converting probe data to machinable geometry
PTJ shop’s multiaxis machining gives control over the tool axis, lead/lag, entry/exit and tilt. Full entry and exit control lets you determine exactly where and how the cutter enters and leaves your part. There is an automatic point generator, which adds greater precision, as well as advanced gouge checking and a 5-axis safe zone around the part.
Powerful axis limits control tool motion between defined angles, ensuring that the tool tilt will not violate part or machine tool limits. You can easily refine control of your tool axis with a few simple pieces of CAD geometry, and shank containment simplifies cutting in confined areas.