Turning and milling combined type numerical control machine tool

Abstract

The invention relates to the technical field of numerical control machine tools, in particular to a turning and milling combined type numerical control machine tool which comprises a material shifting frame, a pushing assembly, a traction assembly and a spraying assembly. The shifting frame is connected with the supporting sliding table; the pushing assembly is connected with the material stirring frame. The traction assembly is connected with the longitudinal beam plate; the spraying assembly is connected with the traction assembly; the spraying assembly sprays cutting fluid to the surface of a workpiece for reciprocating flushing through reverse movement of the upper face and the lower face of the conveying belt structure, and the pushing assembly is driven by the opposite-tooth transmission structure to drive the material shifting frame to reciprocate so that the cutting fluid and waste chips can be guided to the material collecting box; and the cutting fluid with the scraps filtered is guided back to the spraying assembly again to be repeatedly used. And therefore, the problem that the surface machining quality of a machined workpiece is affected by waste left on the surface of the workpiece in the turn-milling process is solved.

Description

Technical Field

[0001] The invention relates to the technical field of numerically controlled machine tools, in particular to a turning and milling compound numerically controlled machine tool. Background Art

[0002] The main function of the turning and milling compound CNC machine tool is to realize compound processing, that is, it has both turning and milling functions, and can complete the processing of various complex-shaped parts on the same machine tool. The structure of this type of turning and milling compound CNC machine tool consists of core components such as the bed, spindle box, tool change system, control system and motion transmission system. The bed, as the foundation of the machine tool, provides sufficient stability and rigidity; the spindle box integrates the spindle and its drive system, which directly affects the processing capacity and stability of the machine tool; the tool change system realizes fast and accurate cutting tool replacement through the automatic tool changer; the control system is the intelligent core of the entire machine tool, and realizes precision processing through the CNC controller; the motion transmission system includes the feed system and the auxiliary power system to ensure the precise movement and efficient processing of each working part.

[0003] When a turning and milling compound CNC machine tool is used to process a workpiece, the metal scraps and waste materials generated by turning and milling are retained on the surface of the frame and the workpiece. At this time, in order to ensure the normal subsequent turning and milling operations of the machine tool, the user needs to manually use an air gun to perform chip cleaning operations. On large compound CNC machine tools, the amount of scraps accumulated is relatively large. On the one hand, the cleaning process takes a long time, which greatly increases the downtime of the machine tool and affects the utilization rate and production efficiency of the machine tool. On the other hand, a large amount of scraps generated during the turning and milling process will cause scraps to exist on the surface of the workpiece, so that the scraps between the tool and the workpiece affect the normal turning and milling process, thereby reducing the processing quality of the workpiece. The prior art has proposed a good solution to this problem, such as the CNC machine cleaning device with patent publication number CN113798908B, which flushes the scraps generated during the working process to the cleaning device position by setting a water spray device, and flushes the scraps outside the tooling table through the cleaning device to avoid the accumulation of scraps.

[0004] Although the existing technology has solved the problem of large amounts of waste accumulation during the turning and milling processes of CNC machine tools, the following problems still exist: during the turning and milling process, the use of high-pressure water to directly flush the cutting part of the tool spindle during the cutting process will impact the spindle. On the one hand, the impact of the high-pressure water on the spindle will reduce the processing accuracy. On the other hand, when the cutting force is large, the spindle is subjected to external impact, which will cause the unbalanced torque on the spindle to increase, thereby causing the spindle to break. In addition, since the high-pressure water moves with the spindle, the waste generated at the cutting part will not be washed away. When the high-pressure water moves with the spindle, the waste will still remain on the surface of the workpiece and inside the machine tool when the high-pressure water moves away with the spindle. The waste enters the guide rail and between the workpiece and the spindle. The feed angle and feed height of the spindle will be offset under the influence of the waste, thereby reducing the surface quality of the workpiece and affecting the accuracy of the mating surface. In the subsequent retracting, finishing, turning and milling processes, the tool wear will be aggravated, the dimensional accuracy will be reduced, and the production efficiency will be reduced.

[0005] In view of the above situation, in order to overcome the above technical problems, the present invention designs a turning and milling compound CNC machine tool. Summary of the invention

[0006] The present invention provides a turning and milling compound CNC machine tool, which solves the problem that waste materials retained on the surface of the workpiece during the turning and milling process affect the surface processing quality of the workpiece. By arranging a spray component and a push component, the upper and lower surfaces of the conveyor belt structure are moved in reverse to make the spray component spray cutting fluid to the surface of the workpiece for reciprocating flushing, thereby ensuring that no waste materials exist in the processing grooves of the workpiece and the machine tool guide rails and other positions, and the tooth transmission structure is used to drive the push component to drive the material stripping rack to reciprocate to guide the cutting fluid and waste chips to the collection box, and the cutting fluid after the waste chips are filtered is re-guided back to the spray component for repeated use.

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] A turning and milling compound CNC machine tool comprises a three-axis turning and milling CNC machine tool body, a bed, a loading plate, a PLC controller and a longitudinal beam plate, and also comprises a supporting slide, a material shifting rack, a right-angle frame, a material collecting box, a pushing assembly, a bevel gear set, a motor, a traction assembly and a spray assembly; the supporting slide is connected to the bed; the material shifting rack is connected to the supporting slide; the right-angle frame is fixed on both sides of the bed; the material collecting box is installed at the bottom end of the bed; the motor is connected to the bed; the pushing assembly is connected to the material shifting rack; the bevel gear set is connected to the motor; the traction assembly is connected to the longitudinal beam plate; the spray assembly is connected to the traction assembly; the motor drives the bevel gear set and the traction assembly to rotate, the rotation of the bevel gear set drives the pushing assembly to slide and drive the material shifting rack to slide horizontally back and forth, and the rotation of the traction assembly drives the spray assembly to slide.

[0009] Preferably, the push assembly includes a driving shaft, a gear transmission structure 1 and a secondary shaft; the driving shaft is rotatably mounted on the top wall of the right-angle frame and connected to the bevel gear set; the gear transmission structure 1 is connected to the driving shaft; two rectangular hollow cavities are provided in the right-angle frame; the secondary shaft is installed in the rectangular hollow cavity. The push assembly also includes a driven shaft, a gear transmission structure 2, a C-shaped sliding sleeve, a connecting rod structure and a pulley transmission member; the driven shaft is rotatably mounted on the top wall of the right-angle frame; the gear transmission structure 2 is connected to the secondary shaft; the C-shaped sliding sleeve is slidably mounted on the outer wall of the right-angle frame; the connecting rod structure is connected to the C-shaped sliding sleeve; the pulley transmission member is connected between the gear transmission structure 1 and the gear transmission structure 2.

[0010] In the above scheme, when the wheel drive unit is working, the motor drives the bevel gear set to work through the belt transmission structure, and the bevel gear set drives the gear-type bidirectional synchronous push assembly to rotate, and then the gear transmission structure 1 is used to keep the two driving shafts in a synchronous and reverse rotation state. The pulley transmission member allows the driven shaft to rotate, and the driven shaft drives the secondary shaft to rotate through the gear transmission structure 2. Finally, the rotational motion of the secondary shaft is converted into the horizontal reciprocating motion of the C-shaped sliding sleeve and the material shifting rack through the connecting rod structure, so as to ensure that the material shifting rack can accurately reciprocate along the X-axis direction on the carrier plate, helping the waste chips to fall out of the straight-mouth chip groove.

[0011] Preferably, the connecting rod structure includes a long push arm, a short connecting rod, a first boss, a second boss and a straight-mouthed slide groove; the two long push arms are symmetrically installed at the top of the right-angle frame; the short connecting rod is connected between the long push arm and the secondary shaft; the first boss is connected to the C-shaped sliding sleeve; the second boss is connected to the short connecting rod; and the straight-mouthed slide groove is opened on the long push arm.

[0012] In the above scheme, when the connecting rod structure is in motion, the short connecting rod rotates around the secondary shaft. Since the first boss and the C-shaped sliding sleeve are respectively slidably connected with the straight-mouth sliding groove of the long push arm through the first boss and the second boss, the rotational motion of the connecting rod structure is converted into a reciprocating sliding motion of the long push arm, the C-shaped sliding sleeve, and the material removal rack, thereby preventing waste from accumulating on the loading plate.

[0013] Preferably, the supporting slide includes a herringbone rail, a slide unit and a right-angle seat; the herringbone rail is fixed on the front and rear outer walls of the bed; two slide units are provided, and are slidably installed at both ends of the surface of the herringbone rail; the right-angle seat is fixed on one side outer wall of the slide unit, and the material shifting rack is installed between the four right-angle seats, and the bottom end of one of the slide units is fixedly connected to the top end of the C-shaped sliding sleeve.

[0014] In the above scheme, the herringbone rail and the slide unit form a precise guiding structure, which can effectively stabilize the position and trajectory of the cross arm and the stripper plate during movement, and reduce the problem of waste material clogging or deviation from the chip groove due to unstable movement.

[0015] Preferably, the material stripper rack includes a cross arm and a plurality of material stripper plates; the cross arm is fixed between two right-angle seats in the X-axis direction; a plurality of material stripper plates are fixed in parallel and at equal intervals between the two cross arms, the cross-sectional shape of the material stripper plate is a trapezoid that is wide at the top and narrow at the bottom, the lower surface of the material stripper plate is in contact with the upper surface of the carrier plate, and the material stripper plate is located in the area above the carrier plate between two adjacent straight-mouth chip grooves.

[0016] In the above scheme, the material stripping plates are installed at intervals between the straight-mouth chip grooves, and multiple material stripping plates and multiple straight-mouth chip grooves are provided to ensure that the waste material can be quickly moved into the straight-mouth chip groove each time the material stripping plate slides to prevent blockage, and the material stripping plate is designed as an inverted trapezoidal structure to facilitate material stripping.

[0017] Preferably, the bevel gear set comprises a transmission shaft, a driving bevel gear and a driven bevel gear; the transmission shaft is connected to the motor; the driving bevel gear is connected to the transmission shaft; and the driven bevel gear is connected to the driving bevel gear.

[0018] In the above scheme, the motor and the belt transmission structure drive the transmission shaft to rotate, thereby utilizing the transmission shaft, the driving bevel gear, and the driven bevel gear to drive a driving shaft in the gear-type bidirectional synchronous push assembly to rotate.

[0019] Preferably, the traction assembly includes a base, a circular sleeve, a belt bidirectional transfer structure, a tongue and an L-shaped bracket; the base is connected to the longitudinal beam plate; the circular sleeve is connected to the base; the belt bidirectional transfer structure is arranged inside the base; the tongue is connected between the circular sleeve and the belt bidirectional transfer structure; the L-shaped bracket is connected to the top of the circular sleeve.

[0020] In the above scheme, another part of the rotational power of the motor is transmitted to the traction assembly. During this process, the PLC controller controls the direction, speed, angle, and response time set by the motor installation to work, that is, the motor rotates forward and reverse at a certain frequency to ensure the normal operation of the pushing assembly and the traction assembly, and when the belt transmission structure drives the spray assembly to move, it ensures that when the spray assemblies on both sides reach the middle position, the motor reverses to drive them to move in the opposite direction and reset.

[0021] Preferably, the spray assembly includes a flow guide, an F-shaped pipe seat, an F-shaped pipe seat, a liquid inlet pipe, a cross pipe, a switch valve and a nozzle; the flow guide is connected to the collection box; the F-shaped pipe seat is connected to the circular sleeve; the liquid inlet pipe is connected to the flow guide; the cross pipe is connected to the liquid inlet pipe; the switch valve is connected to the cross pipe; and the nozzles are arranged in an oblique linear array on the cross pipe.

[0022] In the above scheme, the spray component uses cutting fluid to flush the waste chips generated by cutting the workpiece surface. On the one hand, spraying the cutting fluid can take away the waste chips. On the other hand, spraying the cutting fluid can also cool the cutting points to prevent thermal deformation of the workpiece, reduce the friction between the tool and the workpiece during cutting, improve the processing quality while protecting the tool.

[0023] Preferably, the flow guide member includes a flow guide pipe, an opening and closing valve and a reciprocating piston; the flow guide pipe is connected to the collecting box; the opening and closing valve is arranged in the flow guide pipe; and the reciprocating piston is slidably installed in the flow guide pipe.

[0024] In the above scheme, the reciprocating motion of the push assembly drives the reciprocating piston to reciprocate, thereby causing the opening and closing valve to perform a switching motion, so that the cutting fluid stored in the aggregate box can flow into the spray assembly.

[0025] Preferably, the aggregate box comprises a box body, a filter layer and a return pipe; the box body is connected to the bed; the filter layer is connected to the box body; and the return pipe is connected between the box body and the spray assembly.

[0026] In the above scheme, the cutting fluid takes away the waste chips and flows into the box body and then passes through the filter layer to filter the waste chips out of the cutting fluid; so that the cutting fluid can flow back to the spray assembly through the reflux pipe to be reused, reducing costs and improving practicality.

[0027] Compared with the prior art, the present invention has the following beneficial effects:

[0028] 1. Compared with the existing turning and milling compound CNC machine tools, the present invention sets a push assembly, uses a motor to drive the gear transmission structure to rotate in the opposite direction synchronously, and drives the connecting rod structure to drive the material shifting frame to reciprocate by rotating the gear transmission structure, cooperates with the spray assembly to spray cutting fluid on the surface of the workpiece, and guides the waste chips on the surface of the workpiece and the machine tool to the collection box, so as to avoid the accumulation of waste on the surface of the workpiece, which leads to the deterioration of the surface quality of the workpiece. Through the cooperation of the material shifting plate and the straight-mouth chip removal groove, and under the action of the flow of cutting fluid, all the waste chips in the dead corners of the machine tool and the notch of the workpiece can be further guided and swept into the collection box, thereby ensuring the surface quality of the workpiece during processing.

[0029] 2. The present invention converts the reciprocating motion of the push assembly into the reciprocating sliding motion of the reciprocating piston by setting a guide member, thereby realizing the extraction of cutting fluid from the collection box and guiding the cutting fluid into the spray assembly, and the cutting fluid sprayed by the spray assembly can cool the surface of the workpiece and reduce the friction between the tool and the workpiece, thereby protecting the tool and improving the processing quality, while taking away the waste chips on the surface of the workpiece. The cutting fluid with the waste chips enters the collection box, flows through the filter layer to filter out the waste chips, and guides the cutting fluid into the reflux pipe and guides it again to the spray assembly through the guide member for reuse, thereby ensuring that the spray assembly can perform continuous spraying and improving the processing quality of the workpiece.

[0030] 3. The present invention provides the rotational force provided by the motor to the pushing component and the traction component at the same time by setting a belt transmission structure, and under the action of the two-way belt transfer structure of the traction component, the spray component can perform reciprocating sliding spraying during the spraying process through the reverse movement direction of the upper and lower belts, thereby ensuring that the fine waste chips remaining in each part of the workpiece can be flushed to the carrier plate by the high-pressure cutting fluid, and the spraying position and spraying amount can be freely controlled by the switch valve to prevent the waste of cutting fluid, further ensure the cleaning effect of waste chips, avoid the subsequent retracting and finishing process of fine turning and milling resulting in a decrease in processing accuracy due to the presence of waste materials, and achieve the purpose of improving processing quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0032] Figure 1 The overall structure of the present invention Figure 1 ;

[0033] Figure 2 The overall structure of the present invention Figure 2 ;

[0034] Figure 3 A diagram showing the connection relationship between the push assembly and the traction assembly of the present invention and the motor;

[0035] Figure 4 Schematic diagram of the push component structure Figure 1 ;

[0036] Figure 5 Schematic diagram of the push component structure Figure 2 ;

[0037] Figure 6 It is a schematic diagram of the internal structure of the traction component;

[0038] Figure 7 It is a schematic diagram of the structure of the bevel gear set and the spray assembly;

[0039] Figure 8 is a schematic diagram of the flow guide structure;

[0040] Fig. 9 It is a cross-sectional view of the internal structure of the aggregate box and the guide piece;

[0041] Fig.10 for Fig. 9 A magnified view of the structure at center;

[0042] In the figure: 1. Three-axis turning and milling CNC machine tool body; 2. Bed; 3. Loading plate; 301. Straight-mouth chip groove; 4. PLC controller; 5. Longitudinal beam plate; 6. Support slide; 601. Herringbone rail; 602. Slide unit; 603. Right-angle seat; 7. Material shifting rack; 701. Cross arm; 702. Material shifting plate; 8. Right-angle rack; 801. Rectangular hollow cavity; 9. Collecting box; 91. Box body; 92. Filter layer; 93. Reflux pipe; 10. Pushing assembly; 1001. Active shaft; 1002. Gear transmission structure 1; 1003. Driven shaft; 1004. Countershaft; 1005. Gear transmission structure 2; 1006. C-shaped sliding sleeve; 1007. Connecting rod structure; 10071. Long push arm; 10072. Short connecting rod ; 10073, first convex column; 10074, second convex column; 10075, straight-mouth slide; 1008, pulley transmission; 11, bevel gear set; 1101, transmission shaft; 1102, active bevel gear; 1103, driven bevel gear; 12, motor; 13, traction assembly; 1301, base; 1302, circular sleeve; 1303, belt bidirectional transfer structure; 1304, tongue; 1305, L-shaped bracket; 1306, travel limit switch; 14, spray assembly; 1401, guide piece; 14011, guide pipe; 14012, opening and closing valve; 14013, reciprocating piston; 1402, F-shaped pipe seat; 1403, liquid inlet pipe; 1404, horizontal pipe; 1405, switch valve; 1406, nozzle. DETAILED DESCRIPTION

[0043] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0044] See also Figures 1 to 10 The present invention provides a lathe and milling compound CNC machine tool, and the technical solution is as follows:

[0045] As a specific embodiment of the present invention, refer to Figure 1 , Figure 2 and Figure 8The present invention includes a three-axis milling CNC machine tool body 1, a bed 2 is arranged at the top of the three-axis milling CNC machine tool body 1, and a carrier plate 3 is fixedly connected to the upper surface of the bed 2, a collecting box 9 for collecting waste chips is installed at the bottom of the bed 2, and a plurality of straight-mouthed chip removal grooves 301 for allowing waste chips to enter the collecting box 9 are arranged in a horizontal array on the surface of the carrier plate 3, a longitudinal beam plate 5 is fixed to one side of the top of the bed 2, a traction component 13 is arranged on the outer wall of one side of the longitudinal beam plate 5, and both movable ends of the traction component 13 are equipped with a spray component 14 for spraying cutting fluid onto the upper surface of the carrier plate 3, and the cutting fluid sprayed by the spray component 14 at high pressure is mainly used to further promote the waste to enter the straight-mouthed chip removal groove 301 and clean the surface of the carrier plate 3 and the material rack 7, and a driving The motor 12 for driving the traction assembly 13; it also includes a supporting slide 6, a material shifting rack 7 and a right-angle rack 8, wherein the supporting slide 6 is arranged on the front and rear outer walls of the bed 2, and the material shifting rack 7 is slidably arranged on the upper surface of the loading plate 3 through two supporting slides 6, and the top of the material shifting rack 7 can be arranged with fixtures, tooling and other devices for fixing the workpiece to be turned and milled; the right-angle rack 8 is fixed on both sides of the bottom end of the bed 2, and one of the right-angle racks 8 is internally provided with a pushing assembly 10 for driving the material shifting rack 7 to reciprocate horizontally in the X-axis direction, and a bevel gear set 11 for maintaining the power connection between the pushing assembly 10 and the motor 12 is installed on one side inner wall of one side of the bed 2, and a PLC controller 4 electrically connected to the input end of the three-axis turning and milling CNC machine tool body 1, the motor 12, and the spray assembly 14 is installed on one side outer wall of the bed 2.

[0046] As a specific embodiment of the present invention, refer to Figures 3 to 5 The push assembly 10 includes two driving shafts 1001 rotatably mounted on the top wall of the right-angle frame 8, a gear transmission structure 1002 for connecting the two driving shafts 1001, two rectangular hollow cavities 801 arranged inside the right-angle frame 8, a secondary shaft 1004 rotatably mounted inside the two rectangular hollow cavities 801, a C-shaped sliding sleeve 1006 slidably mounted on the front and rear outer walls of the right-angle frame 8, and a connecting rod structure arranged on the top of the secondary shaft 1004 for driving the C-shaped sliding sleeve 1006 to slide back and forth horizontally. 1007, the top of the C-shaped sliding sleeve 1006 is connected to the outer wall of one side of the material diverting frame 7 through the support slide 6, and the bevel gear set 11 is used to connect the motor 12 and one of the driving shafts 1001. When the motor 12 is working, it drives the bevel gear set 11 to work through the belt transmission structure, and the bevel gear set 11 drives the driving shaft 1001 in the push assembly 10 to rotate, and then the gear transmission structure 1 1002 is used to keep the two driving shafts 1001 in a synchronous and reverse rotation state;

[0047] The pushing assembly 10 also includes two symmetrical driven shafts 1003 rotatably mounted on the top wall of the right-angle frame 8, one end of the surface of the driven shaft 1003 is installed with a second gear transmission structure 1005 for power connection with the secondary shaft 1004, and the other end of the surface of the driven shaft 1003 is installed with a pulley transmission member 1008 for maintaining power connection with one of the driving shafts 1001. The pulley transmission member 1008 allows the driven shaft 1003 to rotate, and the driven shaft 1003 drives the secondary shaft 1004 to rotate through the second gear transmission structure 1005. Finally, the rotational motion of the secondary shaft 1004 is converted into a horizontal reciprocating motion of the C-shaped sliding sleeve 1006 and the material diverter 7 through the connecting rod structure 1007, so as to ensure that the material diverter 7 can accurately reciprocate on the carrier plate 3 in the X-axis direction to help waste chips fall from the straight-mouth chip discharge groove 301;

[0048] The connecting rod structure 1007 includes a short connecting rod 10072 fixed to the top of the secondary shaft 1004, two symmetrical long push arms 10071 rotatably mounted on the top of the right-angle frame 8, and a first convex column 10073 and a second convex column 10074 integrally formed on the short connecting rod 10072 and the upper surface of the C-shaped sliding sleeve 1006, and a straight-mouthed sliding groove 10075 for the first convex column 10073 and the second convex column 10074 to pass through the surface of the long push arm 10071. When the structure 1007 is in motion, the short connecting rod 10072 rotates around the secondary shaft 1004. Since the first boss 10073 and the C-shaped sliding sleeve 1006 are respectively slidably connected with the straight sliding groove 10075 of the long push arm 10071 through the first boss 10073 and the second boss 10074, the rotational motion of the connecting rod structure 1007 is converted into a reciprocating sliding motion of the long push arm 10071, the C-shaped sliding sleeve 1006 and the material diverter 7, thereby preventing waste materials from accumulating on the carrier plate 3.

[0049] The supporting slide 6 includes a herringbone rail 601, a slide unit 602 and a right-angle seat 603. The herringbone rail 601 is fixed on the front and rear outer walls of the bed 2. Two slide units 602 are provided. The two slide units 602 are slidably mounted on the two ends of the surface of the herringbone rail 601. The right-angle seat 603 is fixed on one side of the outer wall of the slide unit 602. The material shifting rack 7 is installed between the four right-angle seats 603. The bottom end of one of the slide units 602 is fixedly connected to the top end of the C-shaped sliding sleeve 1006.

[0050] The material shifting frame 7 includes a cross arm 701 and a plurality of material shifting plates 702. The cross arm 701 is fixed between two right-angle seats 603 in the X-axis direction. A plurality of material shifting plates 702 are fixed in parallel and at equal intervals between the two cross arms 701. The cross-sectional shape of the material shifting plate 702 is a trapezoid that is wide at the top and narrow at the bottom. The lower surface of the material shifting plate 702 contacts the upper surface of the carrier plate 3, and the material shifting plate 702 is located in the upper area of ​​the carrier plate 3 between two adjacent straight-mouth chip removal grooves 301.

[0051] When the material stripper frame 7 is driven to slide back and forth horizontally, the material stripper plate 702 is located between two adjacent straight-mouthed chip discharge grooves 301, and the material stripper plate 702 uses the reciprocating horizontal movement to actively push the waste chips on both sides of itself to the straight-mouthed chip discharge groove 301, thereby promoting the discharge of the waste chips. By adjusting the layout and number of the material stripper plates 702, the cleaning efficiency and effect of the chip cleaning structure can be optimized to ensure that the waste is effectively moved to the chip discharge groove. The composition of the cross arm 701 and multiple material stripper plates 702 can provide a multi-point support structure, thereby enhancing the stability and balance of the material stripper frame 7 in the X-axis direction.

[0052] The herringbone rail 601 and the slide unit 602 form a precise guiding structure, which can effectively stabilize the position and trajectory of the cross arm 701 and the material stripper plate 702 during the movement, reduce the problem of waste material clogging or deviation from the chip groove due to unstable movement, and the cross arm 701 and the material stripper plate 702 during the movement of the supporting slide 6 also effectively reduce friction and wear, thereby extending the service life of the machine tool.

[0053] As a specific embodiment of the present invention, refer to Figure 6 and Figure 7 The output end of the motor 12 installed on the outer wall of one side of the longitudinal beam plate 5 is installed with a belt transmission structure for driving the bevel gear set 11 and the traction assembly 13 to work. The bevel gear set 11 includes a transmission shaft 1101 rotatably installed on the inner wall of one side of the right-angle frame 8, a driving bevel gear 1102 fixed at one end of the transmission shaft 1101, and a driven bevel gear 1103 fixed at one end of the surface of one of the driving shafts 1001. The driving bevel gear 1102 and the driven bevel gear 1103 are meshed with each other, and the other end of the transmission shaft 1101 is connected to the motor 12 through the belt transmission structure. The motor 12 and the belt transmission structure drive the transmission shaft 1101 to rotate, thereby using the transmission shaft 1101, the driving bevel gear 1102, and the driven bevel gear 1103 to drive a driving shaft 1001 in the push assembly 10 to rotate, and the other part of the rotational power of the motor 12 is transmitted to the traction assembly 13. In this process, the PLC controller 4 controls the motor 12 to work according to the set direction, speed, angle, and response time, that is, the motor 12 rotates forward and reverse at a certain frequency to ensure the normal operation of the push assembly 10 and the traction assembly 13;

[0054] The traction assembly 13 includes a base 1301 fixed on the outer wall of one side of the longitudinal beam plate 5, a circular sleeve 1302 slidably installed at both ends of the surface of the base 1301, and a belt bidirectional transfer structure 1303 arranged inside the base 1301 and pulling the two circular sleeves 1302 to move toward each other. The belt bidirectional transfer structure 1303 is composed of two synchronous wheels and a multi-V belt. One of the synchronous wheels in the belt bidirectional transfer structure 1303 is connected to the output shaft of the motor 12. The back of the circular sleeve 1302 is equipped with a protruding tongue 1 for fixing with one end of the multi-V belt. 304, the base 1301 is the support and fixing platform of the module, and is tightly connected to the longitudinal beam plate 5 on the three-axis turning and milling CNC machine tool body 1. The belt bidirectional transfer structure 1303 receives the rotary power from the motor 12, and the belt bidirectional transfer structure 1303 drives the two circular sleeves 1302 to move away from or close to each other in the Y-axis direction. In this process, the circular sleeve 1302 is connected to the belt in the belt bidirectional transfer structure 1303 through the tongue 1304, so that the circular sleeve 1302 and the spray assembly 14 can accurately reciprocate on the Y-axis;

[0055] In the existing application technology of the motor 12 and the PLC controller 4, the PLC drives the motor 12 by outputting specific voltage and current waveforms, which can be square waves or other forms of pulse signals, depending on the type of the motor 12 and the design of the driver. By adjusting these signals, the PLC can achieve fine control of the motor 12, including starting, stopping, accelerating, decelerating, and forward and reverse operations;

[0056] The traction assembly 13 also includes two travel limit switches 1306 fixed on the top of the base 1301. An L-shaped bracket 1305 is installed on the top of the circular sleeve 1302. The travel limit switch 1306 is used to monitor and control the movement range of the L-shaped bracket 1305, the circular sleeve 1302, and the spray assembly 14 on the Y axis. When the L-shaped bracket 1305 reaches the preset travel end point, the travel limit switch 1306 will trigger a corresponding signal, and the PLC controller 4 controls the motor 12 to reverse and change the driving direction; considering that the spray assembly 14 may interfere with the main shaft when sliding under the drive of the traction assembly 13, the height of the spray assembly 14 can be adjusted, and the spray assembly 14 can be set above the cutting position of the spindle tool to avoid motion interference. The spray assembly 14 can also be provided with a Z-axis direction driving cylinder so that the spray assembly 14 can slide in the Z-axis direction and be controlled by the PLC controller 4 to automatically adjust the height when it approaches the tool.

[0057] As a specific embodiment of the present invention, refer to 7 to Fig.10The spray assembly 14 includes a flow guide 1401 installed on the outer wall of one side of the circular sleeve 1302, an F-shaped tube seat 1402, a liquid inlet pipe 1403 fixed inside the F-shaped tube seat 1402, and a transverse tube 1404 installed at one end of the liquid inlet pipe 1403 away from the F-shaped tube seat 1402. One end of the transverse tube 1404 extends along the X-axis direction. A plurality of switch valves 1405 tilted downward are installed at the bottom end of the transverse tube 1404. A nozzle 1406 is installed at the open end of the switch valve 1405. The flow guide 1401 is controlled to work by the reciprocating motion of the push assembly 10, so that the cutting fluid can be automatically supplied. The spray density of the spray assembly 14 is controlled by opening and closing the switch valve 1405 at the corresponding position. The flow guide 1401 includes a flow guide tube 14011, an opening and closing valve 14012 and a reciprocating piston 14013; the flow guide tube 14011 is connected to the collecting box 9; the opening and closing valve 14012 is arranged in the flow guide tube 14011, and there are two opening and closing valves 14012, and the opening and closing valves 14012 can only rotate clockwise; the reciprocating piston 14013 is slidably installed in the flow guide tube 14011; the reciprocating motion of the push assembly 10 drives the reciprocating piston 14013 to reciprocate, so that the opening and closing valve 14013 is opened and closed. The closing valve 14012 performs a switching movement. When the reciprocating piston 14013 slides to the right, negative pressure is formed, thereby driving the lower opening and closing valve 14012 to open clockwise, and under the action of the reciprocating piston 14013, a pumping action is performed to pump the cutting fluid from the collecting box 9 to the position of the reciprocating piston 14013. When the reciprocating piston 14013 slides to the left, the upper opening and closing valve 14012 is opened and the lower opening and closing valve 14012 is closed, so that the cutting fluid is pressurized and flows into the spray assembly 14.

[0058] As a specific embodiment of the present invention, refer to Figures 8 to 10 , the material collection box 9 includes a box body 91, a filter layer 92 and a return pipe 93; the box body 91 is connected to the bed 2; the filter layer 92 is connected to the box body 91, and the filter layer 92 can be a hydrophobic layer with multiple small holes, and the diameter of the small holes is set to be less than 1mm, so as to ensure that the waste chips can be effectively filtered out, and the number of small holes can be increased, thereby ensuring the efficiency of filtering; the return pipe 93 is connected between the box body 91 and the spray component 14, and the spray component 14 uses cutting fluid to wash the waste chips generated by cutting the surface of the workpiece. On the one hand, spraying the cutting fluid can take away the waste chips, and on the other hand, spraying the cutting fluid can also cool the cutting points to prevent thermal deformation of the workpiece, reduce the friction between the tool and the workpiece during cutting, improve the processing quality and protect the tool; after the cutting fluid takes away the waste chips, it flows into the box body 91 and then passes through the filter layer 92 to filter the waste chips out of the cutting fluid; the cutting fluid can flow back to the spray component 14 through the return pipe 93 to be reused, thereby reducing costs and improving practicality.

[0059] Working principle: The motor 12 rotates and provides the rotational force to the bevel gear set 11 and the traction assembly 13 through the belt transmission structure, thereby driving the bevel gear set 11 and the traction assembly 13 to rotate, and the bevel gear set 11 drives the gear transmission structure 1 1002 and the gear transmission structure 2 1005 to rotate, thereby driving the connecting rod structure 1007 to drive the material shifting rack 7 to slide back and forth, and the traction assembly 13 drives the spray assembly 14 to slide, and through the reciprocating motion of the material shifting rack 7, the spray assembly 14 extracts the cutting fluid in the collection box 9 to spray the workpiece surface, and the reciprocating sliding of the material shifting rack 7 guides the cutting fluid with waste chips back to the collection box 9, and the cutting fluid with waste chips is filtered and then refluxed to the spray assembly 14 through the reflux pipe 93.

[0060] Specifically, the motor 12 rotates and provides the rotational force to the bevel gear set 11 and the traction assembly 13 through the belt transmission structure. At this time, the active bevel gear 1102 rotates under the action of the rotational force and drives the driven bevel gear 1103 to rotate. At this time, the rotational force is transmitted to the active shaft 1001 through the driven bevel gear 1103. The active shaft 1001 drives the two gears in the gear transmission structure 1 1002 to rotate in the opposite direction, and drives the driven shaft 1003 to rotate through the pulley transmission member 1008. The driven shaft 1003 drives the gear transmission structure 2 1005 to rotate, so that the secondary shaft 1004 rotates. At this time, it is connected to the secondary shaft 1004. The short connecting rod 10072 rotates, and the short connecting rod 10072 rotates around the secondary shaft 1004. Since the first boss 10073 and the C-shaped sliding sleeve 1006 are respectively slidably connected with the straight sliding groove 10075 of the long push arm 10071 through the first boss 10073 and the second boss 10074, the rotation of the connecting rod structure 1007 causes the reciprocating sliding action of the C-shaped sliding sleeve 1006, and the C-shaped sliding sleeve 1006 drives the material diverter frame 7 to slide back and forth, and when the C-shaped sliding sleeve 1006 slides back and forth, it drives the reciprocating piston 14013 to slide back and forth, so that the opening and closing valve 14012 performs a switching movement. When the reciprocating piston 14013 moves to the right When the reciprocating piston 14013 slides to the left, the upper opening and closing valve 14012 is opened and the lower opening and closing valve 14012 is closed, so that the cutting fluid is pressurized and flows into the spray assembly 14; at this time, the spray assembly 14 slides driven by the traction assembly 13, and the belt bidirectional transfer structure 1303 rotates under the rotation force of the motor 12, and drives the spray assemblies 14 on both sides to slide toward the middle, and slide to the stroke. When the limit switch 1306 is on, the motor 12 reverses. At this time, the spray assemblies 14 on both sides slide in the opposite direction of the previous movement direction under the reverse action of the belt bidirectional transfer structure 1303, so that all the waste chips on the surface of the workpiece are cleaned to the position of the material shifting rack 7. At this time, the material shifting rack 7 is sliding back and forth, and the cutting fluid with waste chips is shifted to the position of the straight-mouth chip groove 301, so that it all enters the collecting box 9. The cutting fluid with waste chips flows through the filter layer 92 to filter out all the waste chips. At this time, the cutting fluid passes through the reflux pipe 93 and is again filtered under the action of the guide member 1401. The filtered cutting fluid enters the spray assembly 14 again for spraying.

[0061] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected, and the scope of the present invention to be protected is defined by the attached claims and their equivalents.

Claims

1. A turning and milling composite CNC machine tool, comprising a three-axis turning and milling CNC machine tool body (1), a bed (2), a loading plate (3), a PLC controller (4) and a longitudinal beam plate (5), characterized in that: The machine also comprises a supporting slide (6), a material shifting frame (7), a right-angle frame (8), a material collecting box (9), a pushing assembly (10), a bevel gear set (11), a motor (12), a traction assembly (13) and a spray assembly (14); the supporting slide (6) is connected to the bed (2); the material shifting frame (7) is connected to the supporting slide (6); the right-angle frame (8) is fixed on both sides of the bed (2); the material collecting box (9) is installed at the bottom end of the bed (2); the motor (12) is connected to the bed (2); the pushing assembly (10) is connected to the material shifting frame (7); the bevel gear set (11) is connected to the motor (12); the traction assembly (13) The motor (12) is connected to the longitudinal beam plate (5); the spray assembly (14) is connected to the traction assembly (13); the rotation of the motor (12) drives the bevel gear set (11) and the traction assembly (13) to rotate; the rotation of the bevel gear set (11) drives the push assembly (10) to slide; the sliding of the push assembly (10) drives the material shifting frame (7) to slide horizontally back and forth; the rotation of the traction assembly (13) drives the two spray assemblies (14) to slide in opposite directions; the reciprocating sliding of the material shifting frame (7) guides the cutting fluid in the material collection box (9) into the spray assembly (14) in a piston motion; and the reciprocating sliding of the material shifting frame (7) guides the cutting fluid sprayed by the spray assembly (14) back into the material collection box (9).

2. A turning and milling compound CNC machine tool according to claim 1, characterized in that: The pushing assembly (10) comprises a driving shaft (1001), a first gear transmission structure (1002), a secondary shaft (1003), a driven shaft (1004), a second gear transmission structure (1005), a C-shaped sliding sleeve (1006), a connecting rod structure (1007) and a pulley transmission member (1008); the driving shaft (1001) is rotatably mounted on the top wall of the right-angle frame (8) and is connected to the bevel gear set (11); the first gear transmission structure (1002) is connected to the driving shaft (1001); two rectangular The hollow cavity (801) comprises a secondary shaft (1003) installed in the rectangular hollow cavity (801); the driven shaft (1004) is rotatably installed on the top wall of the right-angle frame (8); the second gear transmission structure (1005) is connected to the secondary shaft (1004); the C-shaped sliding sleeve (1006) is slidably installed on the outer wall of the right-angle frame (8); the connecting rod structure (1007) is connected to the C-shaped sliding sleeve (1006); and the pulley transmission member (1008) is connected between the first gear transmission structure (1002) and the second gear transmission structure (1005).

3. A turning and milling compound CNC machine tool according to claim 2, characterized in that: The connecting rod structure (1007) comprises a long push arm (10071), a short connecting rod (10072), a first boss (10073), a second boss (10074) and a straight-mouthed slide groove (10075); the two long push arms (10071) are symmetrically mounted on the top of the right-angle frame (8); the short connecting rod (10072) is connected between the long push arm (10071) and the secondary shaft (1004); the first boss (10073) is connected to the C-shaped sliding sleeve (1006); the second boss (10074) is connected to the short connecting rod (10072); and the straight-mouthed slide groove (10075) is provided on the long push arm (10071).

4. A turning and milling compound CNC machine tool according to claim 3, characterized in that: The supporting slide (6) comprises a herringbone rail (601), a slide unit (602) and a right-angle seat (603); the herringbone rail (601) is fixed on the front and rear outer walls of the bed (2); two slide units (602) are provided and slidably mounted on the two ends of the surface of the herringbone rail (601); the right-angle seat (603) is fixed on one side outer wall of the slide unit (602), and the material shifting rack (7) is installed between the four right-angle seats (603), and the bottom end of one of the slide units (602) is connected to the top end of the C-shaped sliding sleeve (1006).

5. The turning and milling compound CNC machine tool according to claim 4, characterized in that: The material shifting frame (7) comprises a cross arm (701) and a plurality of material shifting plates (702); the cross arm (701) is fixed between two right-angle seats (603) in the X-axis direction; the plurality of material shifting plates (702) are fixed in parallel and at equal intervals between the two cross arms (701); the cross-sectional shape of the material shifting plate (702) is a trapezoid that is wide at the top and narrow at the bottom; the lower surface of the material shifting plate (702) contacts the upper surface of the carrier plate (3), and the material shifting plate (702) is located in the upper region of the carrier plate (3) between two adjacent straight-mouth chip removal grooves (301).

6. The turning and milling compound CNC machine tool according to claim 2, characterized in that: The bevel gear set (11) comprises a transmission shaft (1101), a driving bevel gear (1102) and a driven bevel gear (1103); the transmission shaft (1101) is connected to the motor (12); the driving bevel gear (1102) is connected to the transmission shaft (1101); the driven bevel gear (1103) is connected to the driving bevel gear (1102) and is also connected to the driving shaft (1001).

7. The turning and milling compound CNC machine tool according to claim 1, characterized in that: The traction assembly (13) comprises a base (1301), a circular sleeve (1302), a belt bidirectional transfer structure (1303), a tongue (1304) and an L-shaped bracket (1305); the base (1301) is connected to the longitudinal beam plate (5); the circular sleeve (1302) is connected to the base (1301); the belt bidirectional transfer structure (1303) is arranged inside the base (1301); the tongue (1304) is connected between the circular sleeve (1302) and the belt bidirectional transfer structure (1303); and the L-shaped bracket (1305) is connected to the top of the circular sleeve (1302).

8. The turning and milling compound CNC machine tool according to claim 7, characterized in that: The spray assembly (14) comprises a flow guide (1401), an F-shaped pipe seat (1402), a liquid inlet pipe (1403), a transverse pipe (1404), a switch valve (1405) and a nozzle (1406); the flow guide (1401) is connected to a material collecting box (9); the F-shaped pipe seat (1402) is connected to a circular sleeve (1302); the liquid inlet pipe (1403) is connected to the flow guide (1401); the transverse pipe (1404) is connected to the liquid inlet pipe (1403); the switch valve (1405) is connected to the transverse pipe (1404); and the nozzle (1406) is arranged in an oblique linear array on the transverse pipe (1404).

9. The turning and milling compound CNC machine tool according to claim 8, characterized in that: The flow guide member (1401) comprises a flow guide pipe (14011), an opening and closing valve (14012) and a reciprocating piston (14013); the flow guide pipe (14011) is connected to a material collecting box (9); the opening and closing valve (14012) is arranged in the flow guide pipe (14011); and the reciprocating piston (14013) is slidably installed in the flow guide pipe (14011).

10. The turning and milling compound CNC machine tool according to claim 1, characterized in that: The material collection box (9) comprises a box body (91), a filter layer (92) and a return pipe (93); the box body (91) is connected to the bed (2); the filter layer (92) is connected to the box body (91); and the return pipe (93) is connected between the box body (91) and the liquid inlet pipe (1403).

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