Micro-control 3+3 CNC machine tool CNC turning and milling compound processing machine tool Small turning and milling compound CNC machine tool
Turning and milling combined allows complex parts to be processed in one clamping
In traditional processing methods, parts require multiple clamping operations, which can easily lead to secondary positioning errors. Guangdong's LC-36Y side milling lathe is a turn-milling composite processing industry application based on the LC-36. It adds 3 power heads on the Y-axis side, thereby achieving a turn-milling composite function of 6 to 8 rows of cutters and 3 side milling. Its focus is on performing complex processing such as side drilling, side tapping, and slot milling on bars within 35 mm and pellets within 100 mm. All processes can be completed in one clamping operation, which not only eliminates errors caused by clamping, but also greatly improves processing accuracy and efficiency. For those companies that carry out mass production, this directly reduces the scrap rate and improves product consistency.
The design concept of LC-36Y has the characteristics of "saving people and machines". Due to the merger of processes, the processing time has been slightly extended. However, one person can manage multiple machines at the same time, saving labor costs. For example, in a hardware accessories factory, it used to require three staff to operate three machine tools, micro-control 3+3 CNC machine tools, CNC turning and milling compound processing machines, and small turning and milling compound CNC machine tools. Now only one person is required to inspect many machines called LC-36Y. This model is particularly suitable for small and medium-sized batches and multi-variety parts processing scenarios. Help enterprises to complete a lot of work with less manpower!
High-strength cast iron bed ensures long-term stability
The bed of the machine tool is made of high-strength cast iron in one piece. Its structure is compact and fine, the strength is high, the hardness is moderate, and the friction coefficient is low. The bed is designed with a slope of 35 degrees and presents an integral box structure. This structure greatly enhances the overall rigidity and stability of the machine tool. This structure has a shock-absorbing function, which can reduce tool wear and improve workpiece quality. Compared with ordinary welded lathes, cast iron lathes have a longer service life and are less likely to deform after long-term use.
In actual applications, users said that after eight hours of continuous processing of LC-36Y, the temperature change of the bed was extremely small, and the thermal deformation was effectively controlled. Furthermore, the design of the inclined bed is conducive to chip removal and operation. For example, in a machining factory in Guangdong, LC-36Y is used to process stainless steel parts. The life of the tool is 20% longer than that of ordinary lathes. This is due to the shock-absorbing ability of the bed, which reduces the impact of cutting vibration on the tool.
Highly rigid screw guide achieves fast and precise displacement
The X and Z axes use Taidao brand ball screws and linear guides. The screw bearings use SKF precision bearings. The rails have a large span to achieve a displacement speed of up to 25 per minute to measure length. Both ends of the screw are designed with double pretension, which can effectively improve the performance indicators of machine tool-related accuracy and stability. The two axes of rotation are continuously connected by a servo motor and a precision ball screw through an elastic coupling. They show good stress conditions and achieve high positioning accuracy.
The computerized automatic lubrication system is equipped with forced lubrication to ensure the long-term stability of the machine tool. Taking an auto parts factory in Zhejiang as an example, the positioning accuracy of the LC-36Y remained within 0.005 mm during continuous operation for half a year. The durability of the ball screw and linear guide reduces downtime and maintenance time, and users only need to replace the lubricating oil regularly every year. Compared with ordinary machine tools, the displacement speed of LC -36Y is 30% faster, achieving a significant improvement in processing efficiency.
Clamp design needs to avoid the risk of tool interference
When processing parts on CNC machine tools, due to the centralized process, the entire process is usually completed in one clamping process, so the positioning and clamping methods of the parts must be paid special attention to. Combination fixtures should be used as much as possible. If the batch of workpieces is large or the accuracy requirements are high, then special fixtures can be designed. Part positioning and clamping parts must not hinder the processing of various parts, hinder the replacement of tools, and affect the measurement of important parts.
When processing a part with a side groove, the collision between the tool and the workpiece as well as the tool and the fixture must not occur. This is particularly important to pay attention to. The fixture cannot be installed above the groove. In the actual cutting process, once installed in this way, it is likely to interfere with the side milling head. As for how to tighten it, The stress adopted must be passed through or close to the main support points, and located where the structural rigidity is relatively better. The result of this is that the possibility of deformation of the parts can be reduced, thereby ensuring dimensional accuracy.
Positioning benchmarks are unified to ensure batch consistency
It is necessary to consider the clamping and positioning of parts, and the consistency of repeated installations. The purpose is to reduce the tool setting time and thereby improve the consistency of the processing of the same batch of parts. Usually the same batch of parts will use the same positioning datum and the same mounting method. Just like processing a batch of bars with a diameter of 30 mm, a three-jaw chuck will be used to position the bar with the tip of the tailstock. The clamping position and pressure of each bar must be consistent.
In an electronic parts factory in Guangdong, workers reported that the positioning repeatability accuracy of LC-36Y can be maintained within 0.002 mm, and the fluctuation in the size of batch parts is extremely small. This is because the machine tool has rigidity and a unified positioning datum. Users can quickly switch the production of different parts with the help of computerized automatic lubrication systems and CNC programs, thereby reducing manual adjustment time. For companies that need to process multiple batches of small batches, the advantages of this consistency are very obvious.
Reduce thermal deformation and friction to extend machine tool life
CNC machine tools have high requirements for static and dynamic stiffness. To reduce thermal deformation, reduce friction during movement, and eliminate gaps in transmission. LC - 36Y has a cast iron bed and a double pre-drawn screw rod design, which effectively controls the impact of thermal elongation on accuracy. The machine tool is equipped with an automatic lubrication system. The friction coefficient of each kinematic pair is very low, and the transmission gap is precisely compensated. This improves the service life and accuracy retention rate of the machine tool.
In actual use, users perform precision calibration every six months, which takes only half an hour. Just like in a mold factory in Jiangsu, the LC-36Y has been used for three consecutive years, but during this period, the runout of its spindle was still within 0.003 mm. During normal maintenance, you only need to check the lubricating oil level and clean up the chips. In this way, the auxiliary time is greatly reduced. The high reliability of machine tools allows companies to safely arrange for one person to operate several machines for production, thus reducing labor costs.
Are you in a factory that is also suffering from errors and labor costs caused by multiple clampings? You are welcome to share the pain points you encountered during the processing in the comment area, like and forward this article, so that more colleagues can know about the efficient solutions for turning and milling composite processing!
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