Turn-milling composite machine tool for slant bed power tool turret of numerical control machine tool

Abstract

The utility model belongs to the technical field of power tool turrets, and particularly relates to a numerical control machine tool slant bed power tool turret turning and milling composite machine tool which comprises a numerical control turning and milling composite machine tool body, a power tool turret is arranged on the inner wall of the numerical control turning and milling composite machine tool body, and a motor installation groove is formed in the inner wall of the power tool turret. Servo motors are installed on the inner wall of the power tool turret, one servo motor is installed on the inner wall of the motor installation groove, a thermal shrinkage tool handle is installed at the output end of the servo motor, and a tool bit is movably connected to the inner wall of the thermal shrinkage tool handle. By arranging the thermal shrinkage cutter handle and utilizing the principle of thermal expansion and cold contraction, the cutter head is installed during heating and tightly held after cooling, vibration transmission can be reduced, the machining precision can be improved, errors can be automatically compensated, the coaxiality is ensured, the service life of the cutter head is prolonged, the surface quality is improved, the clamping force is higher, the cutter head can be effectively prevented from loosening, and the machining yield of fragile materials is improved.

Description

Technical Field

[0001] This utility model relates to the field of power turret technology, specifically a CNC machine tool slant bed power turret turning and milling composite machine tool. Background Technology

[0002] In modern machining production, the demand for high efficiency, high precision, and diversified machining processes is constantly increasing. As a core functional component of CNC machining centers, the performance of the power turret directly affects machining efficiency and product quality. The power system mainly consists of high-performance servo motors or variable frequency motors, and compatible drivers. Servo motors, with their excellent dynamic response characteristics, can achieve positioning accuracy of ±1 pulse and response time control in milliseconds. They can quickly respond to commands issued by the CNC system, achieving precise switching of speed and direction, meeting the stringent precision machining requirements for machining paths and speeds, such as the milling of aerospace components. Variable frequency motors, on the other hand, excel in their wide speed range, with speed ratios reaching 1:100 or even higher, and high output torque characteristics. They perform exceptionally well in heavy-duty cutting and roughing operations requiring large cutting forces, such as the roughing of large molds.

[0003] However, existing power turrets still have some drawbacks in terms of tool head mounting: the motor in the power system will vibrate during operation. When the servo motor or frequency converter motor runs at high speed, this vibration will be transmitted to the tool head mounting position through the transmission components. This will cause the tool head to be unable to remain stable after installation. In high-precision machining, such as milling of precision parts, even slight wobble of the tool head may cause excessive deviation in machining accuracy, thereby affecting product quality. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a CNC machine tool with a slant bed, a power turret, and a milling and turning composite machine, thus solving the problems mentioned in the background.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A CNC milling and turning composite machine tool with a slant bed and a power turret includes a main body, an inner wall of which is equipped with a power turret, a motor mounting slot on the inner wall of which is equipped with a servo motor, one of which is mounted on the inner wall of the motor mounting slot, a heat-shrinkable tool holder on the output end of the servo motor, a tool head movably connected to the inner wall of the heat-shrinkable tool holder, a heater mounting bracket fixedly connected to the outer wall of the main body, a heating mechanism on the inner wall of the heater mounting bracket, a spraying mechanism on the inner wall of the power turret, and a metal cutting tool with a cylindrical fixed end. The inner wall of the heat-shrinkable tool holder has a cylindrical groove.

[0007] Beneficial effects

[0008] This utility model provides a CNC machine tool with a slant bed, power turret, and milling / turning mechanism. Compared with the prior art, it has the following advantages:

[0009] This CNC milling and turning machine with a slant bed and power turret effectively solves the problems mentioned in the background technology by using heat-shrink tool holders. Heat-shrink tool holders utilize the principle of thermal expansion and contraction. The tool head is installed in the heat-shrink tool holder while heated, and after cooling, the heat-shrink tool holder contracts to tightly hold the tool head. This installation method significantly reduces vibration transmission because the heat-shrink tool holder and the tool head have an interference fit and tight contact, which can buffer some motor vibration, making the tool head more stable during machining, effectively improving machining accuracy and reducing machining errors caused by vibration. Heat-shrink tool holders have unique advantages in solving coaxiality problems. During the heat shrinking process, the heat-shrink tool holder shrinks uniformly, automatically compensating for certain manufacturing and assembly errors, ensuring the coaxiality of the tool head and the power system output shaft, greatly reducing tool head eccentricity, extending tool head life, and improving the surface quality of the machined parts. Compared with other tool holder connection methods, heat-shrink tool holders also have higher clamping force when mated with the tool head. When faced with unstable cutting forces caused by fluctuations in motor torque, heat shrink tool holders can more firmly clamp the tool head, prevent the tool head from loosening, ensure the stability of the cutting process, reduce problems such as material chipping and cracking caused by tool head loosening, and improve the yield of brittle material processing. Attached Figure Description

[0010] Figure 1 This is a perspective view of the present utility model;

[0011] Figure 2 This is a partial structural diagram of the power turret in this utility model;

[0012] Figure 3 This is a schematic diagram of the internal structure of the heat-shrinkable knife handle in this utility model;

[0013] Figure 4 This is a partial structural diagram of the motor mounting slot in this utility model;

[0014] Figure 5 This is a schematic diagram of the heating mechanism in this utility model.

[0015] In the diagram: 1. Main body of CNC milling and turning machine tool; 2. Heater mounting bracket; 3. Heating mechanism; 31. Power supply cable; 32. Handle; 33. Housing; 34. Mounting hole; 4. Power turret; 5. Heat shrink tool holder; 6. Servo motor; 7. Spraying system; 8. Tool head; 9. Motor mounting slot; 10. Mounting buckle; 12. Sliding fixing buckle; 13. Positioning protrusion; 14. Nozzle housing; 15. Hose. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] Please see Figure 1-5 This utility model provides a technical solution: a CNC milling and turning composite machine tool with slant bed and power turret, including a CNC milling and turning composite machine tool body 1, a power turret 4 is provided on the inner wall of the CNC milling and turning composite machine tool body 1, a motor mounting slot 9 is installed on the inner wall of the power turret 4, a servo motor 6 is installed on the inner wall of the power turret 4, one of the servo motors 6 is installed on the inner wall of the motor mounting slot 9, a heat shrink tool holder 5 is installed on the output end of the servo motor 6, a tool head 8 is movably connected to the inner wall of the heat shrink tool holder 5, a heater fixing frame 2 is fixedly connected to the outer wall of the CNC milling and turning composite machine tool body 1, a heating mechanism 3 is installed on the inner wall of the heater fixing frame 2, a spraying mechanism is provided on the inner wall of the power turret 4, the tool head 8 is a metal cutting tool, the fixed end of the tool head 8 is cylindrical, and a cylindrical groove is provided on the inner wall of the heat shrink tool holder 5.

[0018] The heating mechanism 3 includes a power supply line 31, a handle 32, and a housing 33. The handle 32 is fixedly connected to the outer wall of the housing 33, the power supply line 31 is fixedly connected to the inner wall of the handle 32, the mounting hole 34 is opened at the lower end of the housing 33, and the heat shrink handle 5 is movably connected to the inner wall of the mounting hole 34.

[0019] The spraying mechanism includes a spraying system 7, a hose 15, a sliding fixing buckle 12, positioning protrusions 13, and a nozzle housing 14. The spraying system 7 is fixedly connected to the outer wall of the power turret 4, and one of the spraying systems 7 is fixedly connected to the inner wall of the motor mounting slot 9. The hose 15 is fixedly connected to the output end of the spraying system 7. The mounting buckle 10 is fixedly connected to the outer surface of the servo motor 6. The sliding fixing buckle 12 is slidably connected to the outer surface of the servo motor 6. The sliding fixing buckle 12 is hinged to the mounting buckle 10. The lower surface of the sliding fixing buckle 12 is provided with a limiting groove that cooperates with the positioning protrusions 13. There are multiple positioning protrusions 13, which are located on the outer surface of the servo motor 6.

[0020] One end of the nozzle housing 14 is fixedly connected to the inner wall of the sliding fixing buckle 12, and the other end of the nozzle housing 14 is provided with a nozzle. One end of the hose 15 is fixedly connected to the nozzle.

[0021] The high-frequency power module is fixedly connected to the top wall inside the housing 33 and is electrically connected to the control circuit of the temperature control system and the cooling fan; the output end of the high-frequency power module is electrically connected to the detachable connector of the induction coil through metal contacts.

[0022] The high-frequency power supply module is electrically connected to the temperature control system to receive its control signals; it is also electrically connected to the induction coil to output high-frequency current.

[0023] The induction coil is electrically connected to the high-frequency power supply module to receive current; the temperature sensor near the induction coil is electrically connected to the temperature control system to feed back the monitored temperature to the temperature control system.

[0024] The temperature control system includes a temperature sensor and a control circuit. The temperature sensor and the control circuit are electrically connected. The control circuit generates a signal based on a preset comparison result and connects it electrically to a high-frequency power supply module. At the same time, the control circuit transmits the temperature data to a display screen, which is located in a position that is easy for the operator to view. The temperature control system is also electrically connected to a cooling fan.

[0025] The cooling fan is electrically connected to the temperature control system and the high-frequency power module, and is controlled by both. When the temperature is too high, the cooling system is activated.

[0026] The spray system 7 is equipped with a cutting fluid tank, a cutting fluid pump, and a regulating valve. The inlet of the cutting fluid pump is connected to the bottom of the cutting fluid tank through a pipe. The pipe is a sealed connection and is used to transport the cutting fluid in the cutting fluid tank to the cutting fluid pump.

[0027] The outlet of the cutting fluid pump is connected to one end of the regulating valve via a pipe. This connection is detachable, which facilitates operation when the regulating valve malfunctions or needs to be replaced.

[0028] The other end of the regulating valve is detachably connected to the hose 15 via a pipe for easy replacement. The nozzle position can be adjusted within a certain range by adjusting the fixed position of the sliding fixing buckle 12 at the positioning protrusion 13 to meet the cutting fluid spraying requirements of different machining positions. At the same time, when the heat shrink tool holder 5 needs to be replaced, the sliding fixing buckle 12 and the mounting buckle 10 can be rotated 90° to provide operating space for disassembly.

[0029] Working principle:

[0030] In metalworking, after the cutting fluid spraying system is activated, the cutting fluid pump begins operation. Since its inlet is connected to the bottom of the cutting fluid tank via a sealed pipe, the cutting fluid in the tank is pumped to the pump through the pipe under the pump's suction. Next, the pressurized cutting fluid flows from the pump's outlet into the regulating valve through a detachable pipe. The operator can adjust the flow rate and pressure according to the machining process requirements using the regulating valve. Finally, the adjusted cutting fluid flows through a flexible pipe to the nozzle. Because the pipe allows adjustment of the nozzle position within a certain range, the cutting fluid can be precisely sprayed onto the machining area, providing cooling and lubrication for the machining process, thus completing the entire cutting fluid spraying workflow.

[0031] When it is necessary to assemble or disassemble the blade head 8, the mounting hole 34 is used to align with the heat shrink handle 5. First, the temperature control system is activated. The operator can set the target heating temperature through the display screen connected to the temperature control system. The temperature control system sends a signal to start the high-frequency power module fixedly connected to the top wall inside the housing 33. The high-frequency power module outputs a high-frequency current, which is electrically connected to the detachable connector of the induction coil through metal contacts and transmitted to the induction coil. After the high-frequency current is applied, the induction coil generates an alternating magnetic field. The heat shrink handle 5, located in the magnetic field, generates an induced current due to electromagnetic induction, and thus heats up rapidly. At the same time, the temperature sensor located near the induction coil monitors the temperature of the heat shrink handle 5 in real time and feeds back the temperature signal to the control circuit of the temperature control system. The control circuit compares and analyzes the received actual temperature with the preset target temperature. If the actual temperature is lower than the target temperature, the control circuit will issue a command to increase the output power of the high-frequency power module to accelerate the heating speed; if the actual temperature is close to or reaches the target temperature, the control circuit will reduce the output power of the high-frequency power module to stabilize the temperature near the set value. During the entire heating process, if the temperature control system detects that the high-frequency power module or the overall device temperature is too high, it will send a start signal to the cooling fan. The cooling fan will then start running to dissipate heat and ensure the normal operation of each module. Once the heat shrink handle 5 reaches a suitable heating temperature, the blade head 8 can be attached or detached. After the operation is completed, the temperature control system is turned off, the high-frequency power module stops outputting current, the induction coil no longer generates a magnetic field, and the cooling fan will continue to run for a period of time to ensure the device is sufficiently cooled before automatically stopping.

[0032] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A CNC slant bed power turret turning and milling composite machine tool, characterized in that: The machine tool includes a CNC milling and turning composite machine tool body (1), the inner wall of which is provided with a power turret (4), the inner wall of which is provided with a motor mounting slot (9), the inner wall of which is provided with a servo motor (6), one of which is installed on the inner wall of the motor mounting slot (9), the output end of which is provided with a heat shrink tool holder (5), the inner wall of which is movably connected with a tool head (8), the outer wall of which is fixedly connected with a heater mounting bracket (2), the inner wall of which is provided with a heating mechanism (3), the inner wall of which is provided with a spraying mechanism, the tool head (8) is a metal cutting tool, the fixed end of which is cylindrical, and the inner wall of which is provided with a cylindrical groove.

2. The CNC machine tool slant bed power turret turning and milling composite machine tool according to claim 1, characterized in that: The heating mechanism (3) includes a power supply line (31), a handle (32), and a housing (33). The handle (32) is fixedly connected to the outer wall of the housing (33), and the power supply line (31) is fixedly connected to the inner wall of the handle (32). The lower end of the housing (33) is provided with a mounting hole (34), and the heat shrink handle (5) is movably connected to the inner wall of the mounting hole (34).

3. The CNC machine tool slant bed power turret turning and milling composite machine tool according to claim 1, characterized in that: The spraying mechanism includes a spraying system (7), a hose (15), a sliding fixing buckle (12), a positioning protrusion (13), and a nozzle housing (14). The spraying system (7) is fixedly connected to the outer wall of the power turret (4), and one of the spraying systems (7) is fixedly connected to the inner wall of the motor mounting slot (9). The hose (15) is fixedly connected to the output end of the spraying system (7). The outer surface of the servo motor (6) is fixedly connected to a mounting buckle (10). The sliding fixing buckle (12) is slidably connected to the outer surface of the servo motor (6). The sliding fixing buckle (12) is hinged to the mounting buckle (10). The lower surface of the sliding fixing buckle (12) is provided with a limiting groove that cooperates with the positioning protrusion (13). There are multiple positioning protrusions (13), and the positioning protrusions (13) are located on the outer surface of the servo motor (6).

4. A CNC machine tool with slant bed, power turret, and milling / turning mechanism according to claim 3, characterized in that: One end of the nozzle housing (14) is fixedly connected to the inner wall of the sliding fixing buckle (12), and the other end of the nozzle housing (14) is provided with a nozzle. One end of the hose (15) is fixedly connected to the nozzle.

5. A CNC machine tool with slant bed, power turret, and milling / turning mechanism according to claim 2, characterized in that: The inner wall of the housing (33) is equipped with a high-frequency power module, an induction coil, a temperature control system, a cooling fan, and a display screen. The high-frequency power module is fixedly connected to the top wall inside the housing (33). The high-frequency power module is electrically connected to the control circuit of the temperature control system and the cooling fan. The output end of the high-frequency power module is electrically connected to the detachable connector of the induction coil through metal contacts. The high-frequency power module is electrically connected to the temperature control system and the induction coil. The temperature control system includes a temperature sensor and a control circuit. The temperature sensor is electrically connected to the temperature control system and the control circuit. The control circuit is electrically connected to the high-frequency power module. The control circuit transmits the temperature data to the display screen. The display screen is set in a position that is convenient for the operator to view. The temperature control system is electrically connected to the cooling fan.

6. A CNC machine tool with slant bed, power turret, and milling / turning mechanism according to claim 3, characterized in that: The spray system (7) is internally equipped with a cutting fluid tank, a cutting fluid pump, and a regulating valve; The inlet of the cutting fluid pump is connected to the bottom of the cutting fluid tank through a pipe. The pipe is a sealed connection used to transport the cutting fluid in the cutting fluid tank to the cutting fluid pump. The outlet of the cutting fluid pump is connected to one end of the regulating valve through a pipe. The regulating valve and the pipe are detachably connected. The pipe and the cutting fluid pump are detachably connected. The other end of the regulating valve is detachably connected to the hose (15) through a pipe.

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