2022 Advanced Member (Top Ten Quality) | Baoji Machine Tool Group: CK7530 Horizontal CNC Lathe

During the CIMT2023 exhibition, the China Machine Tool Industry Association commended and awarded the 2022 Advanced Member (Top Ten) companies. In order to better publicize these member companies, the media department of the association organized a series of special reports on the award-winning companies and their products. The publicity draft of the “Top Ten Independent Innovation” companies has been released before, and then the “Top Ten Best Product Quality” companies will be promoted for reference by the industry, with a view to jointly promoting the improvement of product quality. The manuscript materials come from relevant materials provided by the industry development department of the association and confirmed with relevant enterprises.

Association Media Department

1. Product highlights
Baoji Machine Tool Group CK7530 series CNC lathe adopts inclined bed, wide rectangular hardened guide rail, and high-precision through-hole spindle structure, which has the characteristics of large load bearing, good rigidity and high reliability. The machine tool is equipped with a medium-to-high-end CNC system and a horizontal turret tool holder, which can be used for turning of various internal and external cylindrical surfaces, conical surfaces, arc surfaces, and metric and inch threads. The machine tool has high processing precision, stable performance, energy saving and environmental protection, and is suitable for large-volume, high-speed and efficient processing of parts in industries such as automobiles, motorcycles, petroleum, and construction machinery.

CK7530 has now formed a series of products that meet the maximum processing diameter of 600mm and the maximum processing length of 800/1500/2000/3000mm, which can meet the processing needs of workpieces of different lengths. The CK7530.800 specification can choose side or rear chip conveyors. In terms of machine tool configuration, in addition to conventional reducers, 12/15/18-inch chucks, program-controlled tailstocks, electric/hydraulic/servo turrets, quick-change tool holders, tool setting instruments, workpiece detection, scraping In addition to various configurations such as oil machine and oil mist processor, it can also be customized according to the user’s processing requirements for the workpiece. In recent years, in order to meet the needs of automatic processing, the machine tool has added configurations such as pneumatic doors, servo feed tailstock, high-pressure cooling, and telescopic chip blowing. The machine tools configured above have also been verified many times in the market and have won unanimous praise from users.

2. The quality work and quality assurance measures carried out around the product
(1) Optimized design, the precision and stability of the machine tool have reached the domestic advanced level
CK7530 CNC lathe is a product with domestic advanced level, which meets the domestic market’s demand for high-end CNC lathes. The strength, dynamic and static stiffness of the whole machine, the mechanical structure of the main components, protection, cooling, etc. are all designed according to modern optimization ideas. It is a high rigidity, high precision, excellent precision retention, high production efficiency, and good operating comfort. It is a full-featured CNC machine tool with beautiful appearance and ideal anti-three leakage effect. The machine tool adopts high-strength cast iron casting, inclined bed + base structure, high strength and good shock absorption; the spindle assembly adopts precision bearing combination arrangement, dynamic balance correction, and has the characteristics of high running accuracy, good rigidity, small temperature rise and thermal deformation; The X/Z axis adopts the direct connection structure of the servo motor and the ball screw, which has high feeding accuracy and strong reliability; it is equipped with a multi-station turret tool holder, which can continuously index and change the tool nearby, effectively improving the processing efficiency. The machining accuracy of the machine tool can reach IT6 level, which can meet the high-speed and high-precision turning processing requirements of various inner and outer cylindrical surfaces, conical surfaces, arc surfaces, and metric and inch threads.

(2) Fully implement product life cycle quality control
In accordance with the overall requirement of “doing the best in every job”, with the goal of “zero error” in work and “zero defect” in products, every link is strictly controlled from the entry of rough into the factory, the processing of parts to the delivery of finished products. Adhere to the quality concept of “everyone is an inspector, and the next process is the user”, strictly enforce the company’s quality discipline, and do not process, transfer, store, assemble or sell unqualified products. Constantly explore, quickly respond to market demand, and strictly control all aspects of the product. For example, in the precision control of the machine tool, the accuracy of our machine tools is better than the national standard, and some main precisions are compressed by about 40% of the national standard; Carry out turning accuracy inspections for samples such as balls and balls, and increase the number of internal control inspection items; regularly inspect the maximum power and maximum torque load tests of the machine tool, etc., and effectively improve the accuracy and stability of the machine tool through strict quality control .

(3) Strengthen the quality management mechanism and take multiple measures to enhance the brand value of the enterprise
“Baoji Machine Tool” has won a good reputation in the market for its excellent product quality and efficient service. In order to accurately grasp the new direction of market development, accelerate the construction of a new development pattern, and promote the high-quality development of the enterprise, the company starts from the aspects of management mechanism innovation, product quality improvement, and new market expansion, and strives to achieve new breakthroughs in various fields to meet the new needs of users. Take the user’s standard as the product quality standard, adhere to the user’s demand-oriented, and ensure the continuous improvement of product quality in all aspects from design, processing, assembly, machine testing, and after-sales service.

The company has established measurement standards for commonly used measuring tools for a long time. In daily work, it strictly requires metrological verification personnel to perform verification according to the requirements of the measurement verification regulations of various measuring instruments, correctly use measurement standards and supporting equipment, and issue true and reliable measurement data and verification results in a timely manner. Maintenance of measurement standards and supporting equipment.

In order to strengthen the control of the qualification of raw materials entering the factory, it is equipped with carbon and sulfur analyzers, metallographic analyzers, spectrum analyzers, desktop/portable hardness testers and conventional chemical experiment methods; for the dimensions and Shape and position tolerance, equipped with large-scale gantry three-coordinate machine and small and medium-sized three-coordinate machine, universal tool microscope, precision roundness meter, profile/roughness tester and other instruments; in order to meet the detection needs of machine tool position accuracy and machine vibration , equipped with Renishaw laser interferometer, wireless rotary detection turntable, photoelectric collimator, etc.; equipped with portable dynamic balancer for online dynamic balance detection of machine tools; for temperature rise and noise detection of machine tools, equipped with photoelectric tachometer, Digital thermometers and precision sound level meters; in terms of electrical safety characteristics testing of machine tools, it is equipped with grounding resistance meters, megohm meters, comprehensive electrical parameter measuring instruments, etc., to ensure that products can be accurately monitored in every link of processing and assembly.

3. User comments on the product
Satisfying user needs is the bottom line of the company’s survival. Baoji Machine Tool’s after-sales service follows the principle of focusing on customers, strengthens the construction of after-sales service outlets and team management, aims to improve customer satisfaction, and always adheres to “quality first, customer first” and “begins with customer needs and ends with customer satisfaction”. service concept. The after-sales service of Baoji machine tool is under the centralized management of the after-sales service department of the sales company. The after-sales personnel are distributed in 27 provinces and cities across the country, stationed all year round according to the sales area, and provide users with high-quality and efficient services in the first time. After-sales service personnel stationed abroad can only be appointed after strict selection procedures. The company also conducts continuous online and offline skills and knowledge training for after-sales service personnel, organizes regular return to the factory for learning and communication, and continuously improves the ability to serve users to achieve customer satisfaction.
The after-sales service has always insisted on carrying out user satisfaction surveys, which are summarized every six months. From the return visits and surveys to users, it is known that the CK7530 machine tool has high reliability. During the use of users, no downtime due to machine tool quality problems has affected users. Production events; with high rigidity, it can always maintain the stability of machine tool precision while satisfying the user’s strong cutting; with good precision retention, it can still maintain good precision and stability after continuous use at the user’s site for many years. Quality satisfaction is high. Because the company has a professional after-sales service team and a complete after-sales service system, it can quickly respond to user service requirements, provide professional services, and solve user problems in a timely manner; Customers’ problem-solving” is the top priority. While solving quality problems, users are trained in a targeted manner. Users are satisfied with the response speed, service quality and problem-solving ability of after-sales service personnel. Baoji Machine Tool is “customer first” The implementation of this concept is well recognized.

In order to continuously improve product quality and improve product reliability in adapting to automatic line processing, the technical department has carried out technical research on the automatic adaptability of machine tools, chip removal, sealing, iron filings cleaning, etc., and made major improvements to related components. For example: the original program-controlled tailstock structure is improved to the servo tailstock structure, which improves the processing beat of the workpiece; the automatic door guide rail is changed to a linear guide rail, and the speed detection is added to ensure the automatic door is opened and closed flexibly and smoothly; the center is added The frame protective cover protects the center frame pipeline, detection switch and other parts to ensure the normal operation of the center frame; optimizes and improves the connection between the protective cover structure sheet metal of the machine tool, the recovery of coolant, etc., and improves the machine tool. Sealing performance when equipped with high-pressure chip punching; add a telescopic chip punching device for the workpiece, and clean the clamping surface of the workpiece to make the clamping of the workpiece more reliable.

In the process of returning to the user, I learned that the above changes are effective and have been fully affirmed by the user. In addition, the user also put forward some suggestions for improvement: when the machine is used alone, the maintenance opening on the left side is changed from a fixed door to a hinged door to make the operation more convenient; configurations such as a large spindle diameter are added to meet individual needs, etc. The company attaches great importance to these opinions, and has responded quickly and effectively rectified them to solve user problems, and has been verified by users and achieved good results.

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