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What to do if there is a malfunction in the CNC machine tool for turning and milling

zhiheng — Sat, 22 Jun 2024 07:39:47 +0000

During the operation of the CNC machine tool for turning and milling, there is a malfunction. We can use the following methods to troubleshoot the problem.

1. Initialization reset method: In general, if a system alarm is caused by an instantaneous fault, hardware reset or switching on the system power supply can be used to sequentially diagnose the fault. If the working storage area of the system is in chaos due to power failure, unplugging or unplugging circuit boards, or undervoltage of the battery, the system must be initialized. Before initialization, attention should be paid to copying and recording the data. If the fault cannot be eliminated after initialization, hardware diagnosis should be carried out.

2. Parameter change, program correction method: System parameters are the basis for determining system functions, and incorrect parameter settings may cause system malfunctions or ineffective functions. Sometimes, user program errors can also cause malfunctions and shutdowns. To address this, the system’s block search function can be used to check and correct all errors to ensure their normal operation.

3. Adjustment is a simple and easy method to implement. Correct system faults by adjusting the potentiometer.

When the spindle of a CNC machine tool for turning and milling occurs belt slippage during startup and braking, the reason is that the spindle load torque is large, and the inclined lifting time of the driving device is set too small, which is adjusted to be normal. The servo system consists of two main parts: the driving device and the executing mechanism.

Advantages of turning and milling composite machine tools compared to ordinary machine tools

zhiheng — Fri, 21 Jun 2024 07:15:15 +0000

1. High precision and stable quality
The CNC turning and milling composite machine tool is automatically processed according to the predetermined program, without the need for manual intervention, which eliminates human errors or errors caused by operators; The CNC machine tool itself has high stiffness, good accuracy, and good accuracy retention, which is more conducive to the stability of part processing quality; Software can also be used for error compensation and correction, making CNC machining more precise.

2. Good adaptability and flexibility
Due to the use of CNC machining program control, CNC turning and milling composite machine tools can achieve automated machining of new parts as long as the CNC machining program is changed when the machining parts are changed. Therefore, they can adapt to the requirements of continuous product updates in the current market competition and solve the automation problem of multi variety, single piece, and small batch production. Meet the processing needs of complex shaped and surface parts in manufacturing sectors such as aircraft, automobiles, shipbuilding, power equipment, and defense and military industry.

3. High production efficiency
The feed motion and most main movements of CNC turning and milling composite machine tools adopt stepless speed regulation, and the speed regulation range is large, allowing for the selection of reasonable cutting and feed speeds; Online inspection can be carried out to avoid downtime during CNC machining; Automatic tool changing and automatic workbench exchange can be used to reduce tool changing time; Processing can be carried out simultaneously for workpiece loading and unloading, and a single clamping can achieve multi face and multi process processing, reducing auxiliary time such as workpiece clamping and tool alignment; Centralized CNC machining processes can reduce part turnover time. Therefore, the productivity of CNC machining is relatively high, with general parts being 3-4 times higher, and complex parts being tens or even tens of times higher.

4. Beneficial for modern production and management
The use of CNC turning and milling composite machine tools can facilitate and accurately calculate the processing time of parts, accurately calculate production and processing costs, and is conducive to scientific and information management of the production process. CNC machine tools are the foundation of advanced manufacturing systems such as DNC, FMS, and CIMS, facilitating the integration of manufacturing systems.

5. High technical requirements for use and maintenance
CNC turning and milling composite machine tools are products that integrate multiple disciplines and new technologies. The price of machine tools is high, and the one-time investment in equipment is large. Correspondingly, the operation and maintenance requirements of machine tools are high. Therefore, in order to ensure the comprehensive economic benefits of CNC machining, it is required that the users and maintenance personnel of the machine tool should have high professional qualities.

6. Low labor intensity and good working conditions
The operator of CNC turning and milling composite machine tools generally only needs to load and unload parts, replace tools, and use the operation panel to control the automatic processing of the machine tool, without the need for complex and repetitive manual operations, so the labor intensity can be greatly reduced.

The influence of precision control of CNC lathes on machining

zhiheng — Thu, 20 Jun 2024 06:17:13 +0000

Every process element in the machining process of a lathe may also affect machining accuracy, such as clamping, inspection, and external environment. So, the precision control of CNC lathes needs to be summarized and controlled. A CNC lathe mainly consists of four parts: the host system, the CNC lathe manufacturer system, the drive system, and the machining assistance system. Host system. The host system is the main part of mechanical processing, which primarily implements the cutting of workpieces. Its components mainly consist of processing components such as the spindle, bed, column, and feed components. CNC programming system. The CNC system is a key component that is different from ordinary machine tools and is also the core component of CNC machining. It is composed of hardware equipment and corresponding software, mainly responsible for inputting and storing mechanical machining programs. Some CNC machine tools can also complete the processing and processing of input parameters, and perform certain specific operational functions. The drive system of CNC lathe manufacturers. The driving system provides the driving force for CNC lathe machining and completes mechanical processing. The primary components include the spindle motor, spindle drive structure, feed motor, feed structure, etc., which are controlled by the drive system through servo organization to complete the spindle motion and feed motion. CNC lathe manufacturers refer to necessary auxiliary organizations in the production process to ensure the smooth completion of cutting operations. The primary functions include spraying organization, chip removal organization, CNC turntable, monitoring and inspection organization, and cooling, chip removal, lighting, smoothness, etc.

CNC lathe manufacturers have been widely used in today’s mechanical manufacturing industry, creating significant economic benefits for companies and society. The accuracy of mechanical products directly affects their operational functions, while the precision control of CNC lathes directly affects the accuracy of the processed mechanical products. With the development of the mechanical manufacturing industry, the demand for precision of mechanical products is increasing, and correspondingly, higher demands have been put forward for the machining accuracy of CNC lathes. As for a typical CNC lathe, its machining accuracy is generally determined by four parts: the accuracy of the lathe’s own manufacturing; CNC programming accuracy; Lathe servo system accuracy; The accuracy of the interpolation process. CNC lathe manufacturers refer to necessary auxiliary organizations in the production process to ensure the smooth completion of cutting operations. The primary functions include spraying organization, chip removal organization, CNC turntable, monitoring and inspection organization, and cooling, chip removal, lighting, smoothness, etc.

What should be paid attention to when positioning and clamping workpieces on CNC lathes?

zhiheng — Tue, 18 Jun 2024 06:09:54 +0000

The method of installing parts on CNC lathes is the same as that of general lathes. It is necessary to use existing universal fixtures for clamping as much as possible, and attention should be paid to reducing the number of clamping times, so as to achieve that all the surfaces to be machined on the parts can be processed in one clamping. The part positioning benchmark should be as close as possible to the planning benchmark to reduce the impact of positioning errors on scale accuracy. In order to ensure machining accuracy during the machining process, it is necessary to first position the workpiece in the correct position on the CNC lathe when machining parts, and then clamp it. This process of positioning and clamping is called workpiece clamping. The process equipment used for clamping workpieces is machine tool fixtures.

Six point positioning of workpieces in CNC lathes: The workpiece has six degrees of freedom in space, namely the movement freedom along the x, y, and z right angle coordinate axes and the rolling freedom around these three coordinate axes. Therefore, in order to fully confirm the orientation of the workpiece, it is necessary to eliminate these six degrees of freedom. Usually, six support points (i.e. positioning elements) are used to constrain the key six degrees of freedom, where each support point constrains the corresponding degree of freedom. In the y plane, three support points that are not on the same line constrain the workpiece’s king and three degrees of freedom, which are called the main reference plane; The two support points placed along the length direction on the plane constrain the workpiece to hold two degrees of freedom, and this plane is called the guiding plane; The workpiece of the rolling machine is constrained by a support point on the xoz plane, with one degree of freedom, and this plane is called the stopping plane.

We need to pay attention that before clamping the workpiece on the CNC lathe, the operator needs to first remove impurities such as sand and mud from the workpiece to prevent impurities from getting stuck in the sliding surface of the drag plate, increasing the wear of the guide rail or “biting” the guide rail. When clamping and correcting workpieces with large dimensions, complex shapes, and small clamping areas on a CNC lathe, a wooden bed cover should be placed on the machine bed surface below the workpiece in advance. Together, a pressure plate or a movable top pin should be used to hold the workpiece to prevent it from falling and damaging the machine tool. If the orientation of the workpiece is found to be incorrect or skewed, it is necessary to avoid forceful tapping to prevent affecting the accuracy of the machine spindle. It is necessary to first release the clamping jaws, pressure plates, or top pins slightly, and then carry out step-by-step correction.

How to choose a good manufacturer of turning and milling composite lathes?

zhiheng — Tue, 18 Jun 2024 05:56:10 +0000

How to choose a good manufacturer of car milling composite lathes is a question that many people consider when choosing car milling composite lathes. In fact, manufacturers of car milling composite lathes are constantly emerging like mushrooms after rain, and with this trend, car milling composite lathe manufacturers are also growing stronger and stronger. At the same time, various manufacturers of car milling composite lathes can be said to be like eight immortals crossing the sea, each showcasing their unique features. This makes people more hesitant when making choices. In fact, it is not difficult to choose a car milling composite lathe manufacturer, but if customers want to choose a high-quality car milling composite lathe manufacturer, they still need to keep their eyes open and carefully distinguish.

Firstly, in order to choose a good manufacturer of turning and milling composite lathes, it is necessary to ensure that the qualifications are complete. Qualification is particularly important in the machine tool and lathe industry. If a company does not have a qualification certificate, it indicates that the company cannot have sufficient capability to complete this project. Therefore, a company’s qualifications are a powerful proof of its strength.
Secondly, to choose a good manufacturer of turning and milling composite lathes, it is necessary to conduct a second check: technological strength. Scientific and technological strength is the strength of a company, and speaking with technology is the hard truth. If a company has strong technical capabilities, it can ensure the smooth completion of their various projects, allowing customers to use with confidence and avoiding potential harm in the later stage. Therefore, technological strength is an important reason why customers are willing to choose a company.
Furthermore, to choose a good manufacturer of turning and milling compound lathes, it is necessary to understand three aspects: whether the service is adequate. In the machine tool and lathe industry, service may be something many companies lack. Based on the development of technology and practical needs, update existing systems and regulations to keep up with the times.

Zhejiang Zhiheng Machine Tool Co., Ltd., established in 2006, is a high-tech enterprise that fills the domestic gap by applying electric spindles to CNC lathes. It is a benchmark manufacturer of electric spindle turning and milling composite machine tools in China and integrates research and development, production, sales, and service. We integrate and optimize processes to reduce subsequent secondary clamping, equipment, personnel, and manufacturing processes, providing customers with a comprehensive solution that combines electric spindle turning, milling, drilling, boring, and grinding processes. After years of unremitting efforts, we currently have advanced working machines in the industry, independent research and design capabilities, independent manufacturing of core functional components, and comprehensive turnkey engineering capabilities.

How to choose lubricating cutting fluid for the use of turning and milling composite machine tools

zhiheng — Mon, 17 Jun 2024 02:46:26 +0000

The cutting fluid used on the turning and milling composite machine tool can be initially selected by customers based on the processing situation of the enterprise. 2-3 cutting fluids with good comprehensive performance can be selected, and after practical trial, the cutting fluid with suitable performance and price can be determined to meet the processing requirements. The performance of the workpiece material is important for the selection of cutting fluid. Now, let’s take a look at how to choose the lubricating cutting fluid for the use of turning and milling composite machine tools.

1. Cutting fluid should have no irritating odor and contain no harmful additives to the human body, ensuring the safety of users.

2. The cutting fluid should meet the needs of equipment lubrication and protection management, that is, the cutting fluid should not corrode the metal components of the machine tool, do not harm the sealing parts and paint of the machine tool, and will not leave hard adhesive deposits on the machine tool guide rail, ensuring the safety and normal operation of the equipment.

3. The cutting fluid of the turning and milling composite machine tool should meet the rust prevention requirements between the workpiece processes and not rust the workpiece. When processing copper alloys, sulfur-containing cutting fluids should not be used. When processing aluminum alloys, a cutting fluid with a neutral pH value should be selected.

4. Cutting fluid should have excellent lubricity and cleaning function. Select a cutting fluid with a high maximum non biting load value and low surface tension, and determine it through cutting fluid experiments.

5. Cutting fluid should have a long service life, which is particularly important for turning and milling composite machine tools.

6. The cutting fluid of the turning and milling composite machine tool should be adapted to multiple processing methods and workpiece materials as much as possible.

7. Cutting fluid should have low pollution and have waste liquid treatment methods.

8. Cutting fluid should be inexpensive and easy to manufacture.

In summary, the selection principle of cutting fluid for turning and milling composite machine tools must meet the requirements of cutting performance and usage performance, that is, it should have good lubrication, cooling, rust prevention and cleaning performance, meet the process requirements during the machining process, reduce tool wear, reduce machining surface roughness, reduce power consumption, and improve production efficiency. At the same time, the stability of use should be considered.