Method for the automatic machining of miter saw bases

Abstract

The application is a kind of automatic processing method of beveling saw base. The automatic processing device sends the base to the processing device by the turnover device. The processing device first mills each working surface, and then drills and taps other working surfaces based on the already flattened working surface. The finished base returns to the turnover device, realizing the automation of all processes such as feeding, processing and discharging. The processing method is to press and load a group of two bases with consistent draft angle into the turnover clamping sleeve mold to form clamping and stacking, and then move the turnover device to the feeding and discharging side interface position of the processing device to form a combined relationship. The base is pushed from the turnover clamping sleeve mold to the clamping sleeve mold of the processing device. After the corresponding processing of each working surface of the positioning turret is completed, it is sent back to the movable turnover frame. The turnover clamping sleeve mold is picked up at the pickup location and returned to the bottom of the turnover device 1 until all the bases of the turnover device are processed, and then the turnover device is moved as a whole to discharge.

Description

[0001] This application is a divisional application of Chinese patent application filed on April 6, 2023, with application number 2023103909937 and invention title "Automated processing device and processing method for miter saw base". Technical Field

[0002] This invention belongs to the technical field of miter saw component processing devices, specifically relating to an automated processing device and processing method for a miter saw base. Background Technology

[0003] This application relates to a miter saw with a retractable head, which, compared to miter saws with non-retractable heads, such as the miter saw disclosed in Chinese invention patent CN103586532B, has a larger cutting range and enhanced practicality.

[0004] The bases of both types of miter saws are generally made of die-cast aluminum. The die-casting process requires draft angles on both the top and bottom surfaces. The base shape of a telescopic miter saw is as follows: Figure 1 and Figure 2 As shown, one end is disc-shaped, and the other end is long and narrow, extending outwards. Ordinary miter saws do not have this extension. Its three working surfaces, as well as various holes and threaded holes distributed on them, need to be machined. During machining, one surface must first be machined as a reference plane, and then the remaining surfaces and holes are machined using this reference plane for positioning. Therefore, to complete different processing steps, multiple clamping, flipping, and transfer are required. Furthermore, since the base's length dimension generally exceeds 500mm, it is difficult to manufacture a relatively simple flipping fixture. Each processing step requires manual assistance for loading and unloading, resulting in low processing efficiency and high labor intensity. Moreover, any product using manual loading and unloading requires its own separate turnover frame, occupying space. Summary of the Invention

[0005] To address the shortcomings of the existing technology, the present invention aims to provide an automated processing device for miter saw bases that occupies a small space and has a high degree of automation. This automated processing device uses a transfer device to deliver the base to the processing device, which first mills out each working surface. Then, using the already leveled working surfaces as a reference, it drills and taps the other working surfaces. The processed base is then returned to the transfer device, achieving automated processing of all steps, including feeding, processing, and unloading.

[0006] The objective of this invention is achieved through the following technical solution: an automatic processing device for a miter saw base, comprising a turnover device and a processing device. The turnover device is located on the loading and unloading side of the processing device and includes a movable and stable bottom frame with an opening on the bottom surface, the upward side, and the side facing the processing device. A movable turnover frame, the lower part of which is inside the bottom frame and the whole of which can move towards the processing device, a circulating in-and-out mechanism, partly located inside the bottom frame and partly located inside the movable turnover frame, and a circulating clamping mold for clamping the base, which circulates in the movable turnover frame. The processing device includes a mounting platform, a processing assembly fixed on the mounting platform, and an output conveyor belt located below the processing assembly with one end cantilevered out.

[0007] Another technical problem to be solved by the present invention is to provide a processing method for the processing apparatus described above, which is achieved through the following technical solution, including the following steps: a. Prepare the material loading. Take two bases as a group, fill them with the material according to the draft angle of the base and the draft angle of the transfer clamping mold, and flatten and press them. Insert the base into the transfer clamping mold to form a clamp. Place multiple transfer clamping molds that have been inserted into the bases horizontally in the movable turnover frame according to the direction of the sliding grooves on the guides at both ends and the positioning strip in the first track. Push the turnover device with the small wheel rotation to the docking point on the loading and unloading side of the processing device, adjust the positioning support and fix it to make the two form a combined whole. b. ① The turnover device starts, and the cyclic in-and-out mechanism operates. Under the lifting action of the lifting mechanism, the turnover clamping mold stacked on the top is pushed into the second track. Driven by gravity and corrected by the elastic pressure plate, the positioning strip enters the gap guide groove of the transverse walking guide block. Under the correction of the positioning strip, the turnover clamping mold slides along the second track, the arc transition corner, and to the lower end of the upper part of the positioning strip in the third track. After passing through an arc transition corner and the correction of the elastic pressure plate, the turnover clamping mold has changed from horizontal to vertical. When the turnover clamping mold stops at the positioning rod of the positioning cylinder, it is parallel to the clamping mechanism of the feeding position of the processing device, the draft angle is consistent, and the movable turnover frame moves towards the processing device and locks. ② The cantilever of the discharge conveyor belt extends into the circulation inlet and outlet mechanism from the lower side of the pushing mechanism; the pushing mechanism operates, the sliding guide inserts into the casting process hole and weight reduction hole of the base, and the ejector pusher pushes the base along the sliding guide from the circulating clamping mold with the reverse draft angle, and pushes it into the clamping mechanism of the processing device; the positioning rod of the positioning cylinder retracts, the empty circulating clamping mold falls on the telescopic rod of the reversing limit cylinder, the ejector pusher pushes again, pushing the empty circulating clamping mold from the vertical to the horizontal, the telescopic rod of the reversing limit cylinder retracts, the circulating clamping mold falls horizontally on the base supported by the cantilever of the discharge conveyor belt with the draft angle flared downwards, the movable turnover frame moves out of the processing device and locks, and the cantilever of the discharge conveyor belt retracts accordingly; c. When the processing device is in operation, the side of the positioning rotating frame that is used for loading is called the loading working surface, the opposite side is called the first drilling and tapping working surface, the upward side is the milling working surface, and the downward side is the unloading working surface. The bases carried by the clamping mechanisms on the four surfaces are in different processing stages, and the two end faces are the second drilling and tapping working surface and the third drilling and tapping working surface, respectively. After the positioning frame starts, each rotation will sequentially change the base to be processed from the loading working surface, milling working surface, first drilling and tapping working surface, and unloading working surface. After each change, the magnetic seat will be locked and the outer ring frame will be locked. On the feeding working surface, the clamping mechanism receives the material from the turnover device and starts the clamping function to fix the base to be processed. At this time, the bottom plane of the base to be processed faces outward and is higher than the clamping mechanism to provide space for milling. The height is controlled by the stroke of the pushing mechanism. The milling process begins by first milling the bottom plane of the base on the clamping mechanism. Then, the gear drive motor is activated to move the push table housing out of the positioning frame. The outer ring frame lock is released, the flipping motor is activated, the clamping mechanism is flipped, the base working surface is flipped upwards, the top pressure component is released, and the two disc milling cutters are moved to the top of the two base disc surfaces and lowered to the required height. The first piston assembly is activated to push the two bases upwards until they contact the disc milling cutters. Then, the top pressure component is locked, and the outer ring frame is locked. The first drilling and tapping face is where the drilling and tapping of the installation holes for the base working face are completed; The second and third drilling and tapping working faces are used to complete the drilling and tapping of the mounting holes on the machine head mounting face. This process can be carried out simultaneously with the first drilling and tapping working face. On the bottom working surface, the clamping mechanism carrying a set of completed processing bases is rotated by the flipping motor. When flipping, it is synchronized with the clamping mechanism on the milling working surface. It is pushed and unloaded onto the discharge conveyor belt by the second piston assembly and sent to the cantilever of the discharge conveyor belt, waiting to re-enter the circulating in-out mechanism to be picked up by the clamping mold. The empty clamping mechanism rotates again with the positioning rotating frame and returns to the loading working surface. d. The rotating clamping mold, which fits onto the base of the discharge conveyor belt, slides horizontally downwards under the action of gravity until it enters the lower bend. With the cooperation of another elastic pressure plate, it remains horizontal and enters the bottom of the fourth track. Then, the lifting mechanism lifts it upwards, returning it to the stacking row of rotating clamping molds in the turnover device. At the same time, the topmost new base to be processed is pushed out of the stacking row again as the rotating clamping mold is lifted, and a new round of processing turnover begins. This cycle continues until all the bases of the turnover device have been processed, and the entire turnover device leaves the processing device.

[0008] In summary, the present invention has the following advantages compared with the prior art: I. This invention is a special processing device customized according to the shape, size and material of the miter saw base. The core design concept is ① to provide multiple working positions in one machine to improve processing efficiency; ② to set up a flipping function so that the workpiece can be flipped over, and one milling cutter can complete the milling of the upper and lower sides of the workpiece, and use the previously processed working surface as the reference surface for subsequent processing; ③ to automatically feed the base to be processed, and automatically unload it after processing and return it to the turnover device. When the base returns to the turnover frame, it also drives a new round of bases to enter the processing.

[0009] 2. In this invention, two bases are pressed into a transfer clamping mold with the same draft angle to form a clamp, and then stacked in a turnover device for loading. The turnover device is then moved to the loading and unloading interface of the processing device to form a combination relationship. The turnover device is started, and the base is pushed from the turnover clamping mold into the clamping mold of the processing device to complete the processing; the empty turnover clamping mold is moved down to the picking mechanism. The processing device is started, and after the corresponding processing is completed on each working surface of the positioning frame, it is sent back to the movable turnover frame by the discharge conveyor belt. The material is picked up by the waiting flow clamping mold at the pick-up point and returned to the bottom of the turnover device 1. The lifting mechanism lifts the transfer clamping mold that has returned to the bottom of the turnover device and retracts it into the stacking row. At the same time, a new workpiece to be processed is moved out of the stacking row and enters a new processing cycle. This process is repeated until all the bases of the turnover device are processed and the entire turnover device is moved to unload.

[0010] Third, this invention utilizes the characteristics of aluminum, such as its softness, ease of cutting, and minimal mutual interference during processing, to arrange multiple processing surfaces in the same processing device. The repetitive clamping and positioning of the original multi-station processing is reduced to only loading and positioning, which also reduces the space occupied by the equipment. The side clamping using draft angle can easily obtain reliable clamping without interfering with the processing position. The path of the base being driven in the turnover device is guided by relevant components, resulting in a short path and high efficiency. Furthermore, the power source of this invention is a common cylinder and motor, which can be easily combined with a program to achieve automated control. Therefore, the overall processing efficiency is improved, the labor intensity is reduced, and the processing accuracy is improved, basically achieving the effect of a machining center. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the base structure; Figure 2 This is a schematic diagram of the base from another angle; Figure 3 This is a schematic diagram of the structure of the transfer clamping sleeve clamping base; Figure 4 This is a structural schematic diagram of the present invention in an application scenario; Figure 5 This is a schematic diagram of the structure of the present invention (the conveyor belt part of the processing device, as well as the movable turnover frame and the bottom frame part, have been removed for easier understanding and observation). Figure 6 This is a schematic diagram of the structure of the present invention (in Figure 4 (Further concealing the flow clamping sleeve mold on the basis of the previous one). Figure 7 This is a schematic diagram of the structure of the present invention (in Figure 5 (Based on the shift) Figure 8 This is a structural diagram of the present invention in an application scenario, with the flow clamping mold in a turning state (part of the processing device is hidden). Figure 9 This is a structural diagram of the present invention in an application scenario, showing the state after the transfer clamping mold has finished clamping the processed base, it slides down and turns again; Figure 10 yes Figure 9 A structural diagram from another angle based on the existing structure; Figure 11 A schematic diagram of the combined structure of the mounting base and the sliding guide; Figure 12 This is a structural diagram of the base frame; Figure 13 This is a structural schematic diagram of the present invention in an application scenario (part of the processing device is hidden).

[0012] Figure 14 This is a schematic diagram of the structure of the elastic inner ring clamping block clamping base; Figure 15 This is a schematic diagram of the clamping mechanism clamping base; Figure 16 This is a structural schematic diagram of the positioning rotating frame; Figure 17 This is a schematic diagram of the processing device; Figure 18 This is a schematic diagram of the combined processing device and mounting platform; Figure 19 This is a structural schematic diagram of the processing device from another angle; Figure 20 This is a structural schematic diagram of the rigid outer ring rotating frame; Figure 21 This is a structural schematic diagram of the main body of the rotating frame; Figure 22 This is a structural schematic diagram of the sliding platform housing; Figure 23 This is a partial structural diagram of the rack and pinion slide rail and the gear drive motor combination.

[0013] Marked in the image: Base 01, Cylinder Assembly 02, Turnover Device 1, Processing Device 2, Base Frame 10, Movable Turnover Frame 20, Curvature 21, Guide Rail 22, Roller 23, Circulating In / Out Mechanism 30, Circulating Track 31, First Track 311, Second Track 312, Third Track 313, Fourth Track 314, Positioning Strip 32, Elastic Pressure Plate 35, Pushing Mechanism 36, Mounting Base 361, Sliding Guide 362, Guide Rod 62a, Guide Rail 62b, Pushing Base Plate 62c, Ejection Pushing Component 363, Positioning Cylinder 364, Picking Mechanism 37, Reversing Limiting Cylinder 371, Extrusion Mold Cylinder 372, Lifting Mechanism 38, Fork Arm 381, Support Platform 382, ​​Flowing Clamping Mold 40, Pulley 41, Guide Component 42, Vertical Traveling Guide Block 421, Horizontal Traveling Guide Block 422, Mounting Platform 5 0. Machining assembly 60. Assembly body 61. Positioning rotating frame 62. Central shaft a1. Rotary ring a2. Gear ring a3. Clamping mechanism 621. Elastic inner ring clamping block 21a. Outer ring rotating frame 21b. Bolt a11. Top pressing part a12. Short shaft a13. Positioning hole a14. Pneumatic positioning pin a15. Flipping motor a16. Movable push table 622. Rack slide rail 22a. Push table box 22b. Passing hole 22c. Gear drive motor 22d. Piston through hole 22e. First piston assembly 22f. Second piston assembly 22g. Support seat 22h. Rotating frame body 623. Milling assembly 63. Forward drilling and tapping assembly 64. Lateral drilling and tapping assembly 65. Magnetic suction seat 66. Discharge conveyor belt 70. Working surface m1. Machine head mounting surface m2. Bottom plane m3. First hole k1. Second hole k2. Detailed Implementation

[0014] The present invention will be further described below with reference to the embodiments illustrated in the accompanying drawings: Example 1 This disclosure provides an automatic processing device for a miter saw base. Figure 4 The diagram shows the automatic processing device in operation. The device includes a turnover device 1 and a processing device 2. The turnover device 1 is located on the loading and unloading side of the processing device 2. It includes a bottom frame 10 that is movable and stable, with an opening on the bottom and the side facing the processing device 2. The lower part of the turnover frame 20 is inside the bottom frame 10 and can move towards the processing device 2. A circulating in-and-out mechanism 30 is partially located inside the bottom frame 10 and partially located inside the movable turnover frame 20. A circulating clamping mold 40 for clamping the base 01 is circulating in the movable turnover frame 20. The processing device 2 includes a mounting platform 50, a processing assembly 60 fixed on the mounting platform 50, and an output conveyor belt 70 located below the processing assembly 60 with one end cantilevered out. Figure 7The diagram shows the specific configuration of the movable turnover frame 20 installed within the base frame 10. The base frame 10 is a load-bearing mechanism, shaped as a rectangular box structure with an open top and front, closed sides, and an open side in its cross-section. Small wheels and positioning supports are installed on the bottom. The movable turnover frame 20 is a rectangular channel structure with a continuous vertical axis and an open side in its cross-section. During installation, the opening direction of the movable turnover frame 20's cross-section aligns with the opening direction of the base frame 10's cross-section, facing the processing device 2. The wall portion opposite the opening has a curvature 21, which matches the curvature of the outer edge of the transfer clamping mold 40. The curvature of the outer edge of the circulating clamping mold 40 is not centered. The flared direction of the circulating clamping mold 40, which is placed according to the curvature 21, faces downward to avoid misplacement. The outer sides of the opening are symmetrically provided with guide rails 22. Two guide rails 22 are symmetrically provided on one side near the bottom. The corresponding positions of the two inner side walls of the bottom frame 10 are provided with grooves for the guide rails 22 and rollers 23 to pass through. The movable turnover frame 20 can move in and out after it is engaged with the bottom frame 10. The bottom has a cavity, which provides space for the lifting mechanism 38 to lift the circulating clamping mold 40 back to the movable turnover frame 20. Figure 4-12 The positions of the circulating in-and-out mechanism 30 within the turnover device are shown. The circulating in-and-out mechanism 30 includes circulating tracks 31 symmetrically arranged on the two inner sides of the movable turnover frame 20. The circulating tracks 31 include a first track 311 on the two inner side walls of the movable turnover frame 20 for the passage of the guide member 42; a second track 312 that connects to the upper end of the first track 311 with an arc transition and extends towards the processing device 2 while tilting downwards; a third track 313 that connects to the far end of the second track 312 with an arc transition and extends vertically downwards; and a fourth track 314 that connects to the lowest end of the third track 313 with an arc transition and extends towards the first track 311 while tilting downwards, entering the first track 311. The first track 311, second track 312, and third track 313 are on the same side. The fourth track 314 forms a closed-loop circulation track 31. To ensure that each circulating clamping mold 40 flows in the track in the designed direction, positioning bars 32 are provided in the straight sections of both sets of tracks. The positioning bars 32 can control the guide 42 to not rotate when it moves. The middle section of the positioning bar 32 in the third track 313 is partially cut off to eliminate the control of the positioning bar 32 on the guide 42 and complete the conversion of the circulating clamping mold 40 from a vertical state to a horizontal state. A pushing mechanism 36 is arranged above the cut-off section to realize the handover of the base 01 between the turnover device 1 and the processing device 2. At this time, the circulating clamping mold 40 is in a vertical state. A picking mechanism 37 is arranged below the cut-off section to pick up the base 01 that has been processed and transferred out. At this time, the circulating clamping mold 40 needs to be in a horizontal state. Figure 4-10The positions of the pushing mechanism 36 in the cyclic in-out mechanism 30 are shown respectively, including the mounting base 361 fixed on the outside of the third track 313, the sliding guide 362 driven by the cylinder and installed in the mounting base 361, the ejection pusher 363 driven by the cylinder and installed in the mounting base 361, the cut-off section of the positioning strip 32 in the third track 313, and the positioning cylinder 364 installed in the mounting base 361 whose telescopic rod can enter the third track 313; from Figure 2 As can be seen, the base 01 has multiple weight-reduction or process round holes and waist holes along its center line in the length direction. The sliding guide 362 uses these round holes and waist holes to pass through and enter the clamping mechanism 621 of the processing device 2. Then, the transfer is completed by the push of the pusher 363 (in this embodiment, the pusher 363 is set at the position of the pusher base 01 disc, but it can also be at other positions or multiple pushers in combination). Figure 11 The position and shape of the sliding guide 362 in the mounting base 361 are shown. The sliding guide 362 includes a set of upper and lower guide rods 62a, a guide rail 62b for stabilizing the guide rods 62a, and a push base plate 62c that connects the upper and lower sets of guide rods 62a into a whole. A set of guide rods 62a means that it includes at least two or more rods with circular or waist-shaped cross sections or combinations thereof, so that the base 01 can slide stably to the opposite side.

[0015] Pick-up mechanism 37 includes Figure 6-8 The cut-off section of the positioning strip 32 in the third track 313 is shown in the figure. It is fixed on the outside of the third track 313 and its telescopic rod can enter the reversing limit cylinder 371 in the third track 313. The lower section of the cut-off section of the positioning strip 32 in the third track 313 is fixed on the outside of the third track 313 and its telescopic rod can enter the extrusion mold cylinder 372 in the third track 313. Figure 13 As shown, the lifting mechanism 38 includes a liftable fork arm 381 and a support platform 382 installed on one side wall of the arc 21. The fork arm 381 adopts the lifting mechanism of the fork arm of a forklift and achieves lifting by a motor-driven screw transmission. When the fork arm 381 is not working, it rests under the fourth track 314 and in the cavity at the bottom of the movable turnover frame 20. The support platform 382 is a modified pawl with one-way passage. When the support platform 382 is pushed from bottom to top, the support platform 382 retracts to make room. When the support platform 382 is pushed from top to bottom, the support platform 382 does not move, thus playing a role in preventing backward movement. The support platform 382 is the support for the stacking rows of the circulating clamping mold 40. The circulating entry and exit mechanism 30 also includes one or more elastic pressure plates 35 set at each bend of the track. Each elastic pressure plate 35 can obtain an elastic force that deflects inward towards the inside of the circulating entry and exit mechanism 30 by connecting an elastic band to the pressure plate or setting a torsion spring at the shaft end. However, different elastic forces need to be applied according to the different positions of the elastic pressure plates 35, so that the elastic force can push the circulating clamping mold 40 to rotate slightly as required, but cannot hinder the movement of the circulating clamping mold 40 in the track. For example, at the bend between the second track 312 and the third track 313, the circulating clamping mold 40 slides down according to the inclination of the second track 312. The elastic force here needs to be relatively small, that is, the elastic force cannot be greater than the potential energy of the slide to stop it from sliding down. At the bend between the third track 313 and the fourth track 314, the circulating clamping mold 40 slides down vertically along the third track 313. The potential energy of the slide is large here, so the elastic force needs to be relatively large. The elastic force of the elastic pressure plates 35 at other locations is also selected and set according to actual needs. Reference Figure 3 The transfer clamping sleeve 40 has the same draft angle as the base 01, and has an opening on one side of the circle. The opening structure naturally shrinks inward. The base 01 can overcome the inward shrinkage elastic force by applying appropriate force and squeeze into the transfer clamping sleeve 40 to form a clamp. A cylindrical pulley 41 is provided on each side of the opening. A guide 42 is provided on the outer end face of the pulley 41. The guide 42 includes a vertical walking guide block 421 parallel to the large plane of the transfer clamping sleeve 40 and a horizontal walking guide block 422 that crosses the vertical walking guide block 421. There is a gap at the intersection of the two. That is, both sides of the vertical walking guide block 421 and both sides of the horizontal walking guide block 422 are machined with guide grooves of the same size gap. The guide grooves are V-shaped to facilitate sliding with the positioning strip 32.

[0016] Figure 17-18 The image shows the specific configuration of the machining assembly 60 mounted on a steel structure mounting platform 50 in the form of a long table. The machining assembly 60 includes a main body 61 with a drive, clamping, and control system; a positioning rotating frame 62 mounted on the main body 61, clamped at one end by a central shaft a1 and positioned by a rotating ring a2 at the other end; a milling assembly 63 located above the main body 61 and detachably fixed to it; a forward drilling assembly 64 located behind the machining assembly 60, parallel to the central shaft a1 axis, capable of translation along this axis, and with a variable distance from this axis; a lateral drilling assembly 65 located behind the machining assembly 60 and detachably fixed to the two sides of the main body 61; and a magnetic seat 66 fixed to the main body 61, tightly rotatably engaged with the rotating ring a2, providing support for the rotating ring a2, and providing magnetic fixation when the positioning rotating frame 62 rotates to a preset position. Figure 16-17The positioning frame 62 is shown, located between the central axis a1 and the rotating ring a2. The positioning frame 62 includes a frame body 623 with a plate-like surface on one side (where the central axis a1 is mounted) and a frame-like structure with a square cross-section. Clamping mechanisms 621 for fixing the base 01 during machining are provided on four surfaces that can rotate around the central axis a1. An upward-pushing base 01 and a movable pusher 622 that pushes the base 01 downwards for unloading after all machining is completed are provided within the frame body 623. Each clamping mechanism 621 can be independently flipped and locked. Different machining processes are completed by switching the machining surface each time the positioning frame 62 rotates 90°. The upward-pushing function of the movable pusher 622 is for repositioning the base 01 after machining one plane, using the machined plane as a reference, to complete the machining of the remaining parts. Figure 18 and Figure 19 The installation location of the movable pusher 622 and some of its internal details are shown.

[0017] Figure 15 The diagram shows a clamping mechanism 621 after clamping the base 01. The clamping mechanism 621 and the transfer clamping mold 40 have the same clamping position to facilitate handover. The clamping methods of the two are different. The clamping mechanism 621 includes an elastic inner ring clamping block 21a with a notch on one side of the circular structure that directly contacts and clamps the side of the base 01, and an outer ring rotating frame 21b for mounting the elastic inner ring clamping block 21a. The side of the elastic inner ring clamping block 21a has the same draft angle as the base 01. The opening here serves as a clamping jaw and also leaves space for machining the machine head mounting surface m2. The material of the elastic inner ring clamping block 21a is preferably nylon plate. like Figure 20 As shown, the outer ring frame 21b and the elastic inner ring clamping block 21a are both frame structures, with an opening on one side of the ring structure. Their function is also to leave space for machining the machine head mounting surface m2. The elastic inner ring clamping block 21a is fixed in the middle plane of the frame by bolts a11. Two arc segments on both sides are provided with pneumatic top pressing members a12. When clamping is required, the top pressing members a12 extend outward to push the arc segments of the elastic inner ring clamping block 21a to move inward. That is, the elastic inner ring clamping block 21a is subjected to force at the opening and clamps the base 01. In addition, a short shaft a13 is provided at the center of each end of the outer ring frame 21b. One of the short shafts a13 can be connected to an air nozzle. An air passage is provided between the short shaft a13 and all the top pressing members a12 to obtain the power source of the top pressing members a12. A positioning hole a14 is provided next to each short shaft a13. The positioning hole a14 is used for the external pin to enter so that the clamping mechanism 621 is fixed.

[0018] Figure 21The rotating frame body 623 is shown. It can be seen that each frame beam at one end of the rotating frame body 623 is broken, and there are notches on the plate surface at the other end. The purpose is to provide processing space. A rotating ring a2 is fixedly connected to one end of the rotating frame body 623 by bolts, and a gear ring a3 is fixedly connected to the other end by bolts. The gear ring a3 is connected to the discharge conveyor belt 70 through the transmission cooperation of gears and synchronous belts, and provides power to the discharge conveyor belt 70. The advantage of this setting is that the action rhythm of the two is matched. In addition, the rotating ring a2 and the gear ring a3 also stabilize the frame shape of the rotating frame body 623 with notches. Each frame beam and plate surface on the end face of the rotating frame body 623 has a first hole k1 and a second hole k2. The first hole k1 is located in the center of the internal space. After the first holes k1 at both ends are engaged with the short shafts a13 at both ends of the outer ring rotating frame 21b, a rotatable connection is completed. The second hole k2 corresponds to the position of the positioning hole a14, and is positioned in time by the external pneumatic positioning pin a15. Figure 16 The diagram shows the four sides of the rotating frame body 623 after the clamping mechanism 621 is installed. In order to enable each clamping mechanism 621 to flip independently, a flipping motor a16 is provided at one end of the rotating frame body 623 and is drivenly connected to one of the short shafts a13. The central axis a1 extends into the interior of the rotating frame body 623, with a cylindrical extension, such as... Figure 19 , Figure 21 As shown, the movable push platform 622 includes a rack and pinion slide rail 22a, one end of which is tightly and rotatably fitted onto the cylinder, and the other end which is fixed by a track support 22h; and a push platform box 22b with a rectangular box structure; both ends of the box are provided with passage holes 22c with the same cross-section as the rack and pinion slide rail 22a, and the center line of the passage holes 22c coincides with the axis of the rack and pinion slide rail 22a; the cross-section of the rack and pinion slide rail 22a is from... Figure 11 As can be seen, the bottom is an arc and the top is a rectangle. The teeth are on the upper surface of the rectangle. The arc shape of this cross section facilitates sliding, while the rectangle ensures the stability of the rectangular box when it moves. A gear drive motor 22d is fixedly installed on the outward end face of the rectangular box, which meshes with the teeth on the upper surface of the rack and pinion slide rail 22a. This enables the gear drive motor 22d to move along the rack and pinion slide rail 22a when it is running. See Figure 22 The push table housing 22b has a set of piston through holes 22e diagonally on both the upward and downward sides. The two piston through holes on the downward and upward sides are staggered, that is, the downward side follows the direction of the draft angle, which facilitates the base 01 to fall onto the discharge conveyor belt 40 after processing. Generally speaking, the base 01 can fall by its own weight. The movable push table 622 also includes an upward pushing first piston assembly 22f and a downward pushing second piston assembly 22g provided in the push table housing 22b.

[0019] A processing method, referring to all the accompanying drawings, involves processing a base using the aforementioned automatic processing device. The processing method includes the following steps: Prepare for loading. Using two bases 01 as a group, load and flatten the bases 01 according to the draft angle of the bases 01 and the draft angle of the transfer clamping mold 40. Insert the bases 01 into the transfer clamping mold 40 to form a clamp. Place multiple transfer clamping molds 40 that have been loaded into the bases 01 horizontally in the movable turnover frame 20 according to the sliding groove direction on the guide members 42 at both ends and the positioning strip 32 in the first track 311. When stacking, the transfer clamping molds 40 need to follow the curvature 21 of the side wall. Push the turnover device 1 with the small wheel rotation to the docking point on the loading and unloading side of the processing device 2, adjust the positioning support and fix it to make the two form a combined whole. The turnover device 1 is activated, and the circulating in-and-out mechanism 30 operates. Under the lifting action of the lifting mechanism 38, the topmost circulating clamping mold 40 is pushed into the second track 312. Driven by gravity and corrected by the elastic pressure plate 35, the positioning strip 32 enters the gap guide groove of the transverse travel guide block 422. Under the correction of the positioning strip 32, the circulating clamping mold 40 slides along the second track 312, through the arc transition corner, to the lower end of the upper section of the positioning strip 32 in the third track 313. After passing through an arc transition corner and being corrected by the elastic pressure plate 35, the circulating clamping mold 40... The rotating clamping mold 40 has changed from horizontal to vertical, so that when the rotating clamping mold 40 stops at the positioning rod of the positioning cylinder 364, it is parallel to the clamping mechanism 621 of the feeding position of the processing device 2, and the draft angle is consistent. The movable turnover frame 20 moves towards the processing device 2 and locks. At this time, the cantilever of the discharge conveyor belt 70 extends into the circulating feed mechanism 30 from the lower side of the pushing mechanism 36. The pushing mechanism 36 is activated, and the guide 362 is inserted into the casting process hole and weight reduction hole of the base 01. The ejector pusher 363 pushes the base 01 along the guide 362 from the rotating clamping mold 40. The material is extruded against the draft angle and pushed into the clamping mechanism 621 of the processing device 2 (here, pushing and receiving can also be done along the draft angle, as long as it is consistent with the draft angle of the clamping mechanism 621); the positioning rod of the positioning cylinder 364 retracts, the empty rotating clamping mold 40 falls on the telescopic rod of the reversing limit cylinder 371, the ejector pusher 363 pushes again, pushing the empty rotating clamping mold 40 from vertical to horizontal, the telescopic rod of the reversing limit cylinder 371 retracts, and the rotating clamping mold 40 falls horizontally onto the discharge conveyor belt 7 with the draft angle flared downwards. On the base 01 supported by the cantilever, the position of the extrusion die cylinder 372 is exactly above the pulley 41. That is, when the extension rod of the extrusion die cylinder 372 extends, it just contacts the upper part of the pulley 41. Given the arc-shaped surface of the pulley 41, the extension rod will continue to extend, forcing the pulley 41 to move downward. Thus, under the action of the extension rods on both sides extending simultaneously, the pulley 41 moves downward synchronously. The circulating clamping die 40 completely fits the two bases 01 together through extrusion. The movable turnover frame 20 moves out of the processing device 2 and locks, and the cantilever of the discharge conveyor belt 70 follows and exits. When the processing device 2 is in operation, for ease of description, the side of the positioning frame 62 that is used for loading is called the loading working surface, the opposite side is called the first drilling and tapping working surface, the upward side is the milling working surface, and the downward side is the unloading working surface. The base 01 carried by the clamping mechanism 621 on the four surfaces is located in different processing stages, and the two end faces are the second drilling and tapping working surface and the third drilling and tapping working surface, respectively.

[0020] After the positioning frame 62 is started, it rotates 90 degrees each time, and the base to be processed 01 is sequentially changed from the loading working surface, the milling working surface, the first drilling and tapping working surface (including the second drilling and tapping working surface and the third drilling and tapping working surface), and the unloading working surface. After each change, the magnetic suction seat 66 is locked and the outer ring frame 21h is locked. On the feeding working surface, the clamping mechanism 621 receives from the turnover device 1 and starts the clamping function to fix the base 01 to be processed. At this time, the bottom plane m3 of the base 01 to be processed faces outward and is higher than the clamping mechanism 621 to have milling space. The height is controlled by the stroke of the pushing mechanism 36 when pushing. In the milling process, the bottom plane m3 of the base 01 on the clamping mechanism 621 is milled first. Then, the gear drive motor 22d is started to move the push table housing 22b out of the positioning frame 62 to provide flipping space. The outer ring frame 21b is locked and released, the flipping motor a16 is started, the clamping mechanism 621 is rotated 180 degrees, the working surface m1 of the base 01 is flipped upward, the top pressure member a12 is released, and the two disc milling cutters are respectively positioned above the disc surfaces of the two bases 01 and lowered to the required height. The first piston assembly 22f is started to push the two bases 01 upward until they contact the disc milling cutters. Then, the top pressure member a12 is locked, and the outer ring frame 21b is locked. Here, the milling space and milling height are adjusted by positioning the disc milling cutters to complete the milling process. Simultaneously, the milling of the machine head mounting surface m2 is completed. The first drilling and tapping face is where the drilling and tapping of the mounting holes for the base working face m1 are completed. The second and third drilling and tapping faces are where the drilling and tapping of the mounting holes on the head mounting surface m2 are completed. This process is carried out simultaneously with the first drilling and tapping face. On the bottom working surface, the clamping mechanism 621, which carries a set of completed processing bases 01, is driven to rotate 180 degrees by the flipping motor a16. When it flips, it is synchronized with the clamping mechanism 621 located on the milling working surface. At this time, the flared surface of the draft angle of the base 01 faces downward. It is pushed and unloaded onto the discharge conveyor belt 70 by the second piston assembly 22g and sent to the cantilever of the discharge conveyor belt 70, waiting to re-enter the circulating in-out mechanism 30 to be picked up by the clamping mold 40. The empty clamping mechanism 621 rotates 90 degrees again with the positioning rotating frame 62 and returns to the loading working surface.

[0021] The transfer clamping mold 40, which fits onto the base 01 on the discharge conveyor belt 70, slides horizontally downwards under the action of gravity until it enters the lower bend. With the cooperation of another elastic pressure plate 35, it remains horizontal and enters the bottom of the fourth track 314. Then, the lifting mechanism 38 lifts it upwards and returns it to the stacking row of transfer clamping molds 40 in the turnover device 1. At the same time, the topmost new base 01 to be processed is pushed out of the stacking row again as the transfer clamping mold 40 is lifted, and a new round of processing turnover begins. This cycle continues until all the bases 01 of the turnover device 1 have been processed, and the turnover device 1 leaves the processing device 2 as a whole.

[0022] The specific embodiments described herein are merely illustrative of the spirit of the invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to replace them, without departing from the spirit of the invention or exceeding the scope defined by the appended claims.

Claims

1. A method for processing a miter saw base using an automatic processing device, characterized in that, An automatic processing device using a bevel saw base (01) includes a turnover device (1) and a processing device (2). The turnover device (1) is located on the loading and unloading side of the processing device (2) and includes a movable and stable bottom frame (10) with an opening on the bottom surface, the upward side, and the side facing the processing device (2). The lower part is inside the bottom frame (10) and the entire movable turnover frame (20) can move towards the processing device (2). A circulating in-and-out mechanism (30) is partially located inside the bottom frame (10) and partially located inside the movable turnover frame (20). A circulating clamping mold (40) for clamping the base (01) is circulating in the movable turnover frame (20). The processing device (2) includes a mounting platform (50), a processing assembly (60) fixed on the mounting platform (50), and a discharge conveyor belt (70) located below the processing assembly (60) with one end cantilevered out. The bottom frame (10) is a supporting mechanism, shaped as a rectangular box structure with an open top and front, closed sides, and an open side in cross-section. Small wheels and positioning supports are installed on the bottom surface. The movable turnover frame (20) is a rectangular channel structure with a through-section and an open side in cross-section. During installation, the opening direction of the cross-section of the movable turnover frame (20) is consistent with the opening direction of the cross-section of the bottom frame (10) and faces the processing device (2). The wall part on the side opposite the opening has an arc (21). (21) Match the curvature of the outer edge of the rotating clamping mold (40). Since the curvature of the outer edge of the rotating clamping mold (40) is not centered, the flared direction of the rotating clamping mold (40) placed according to the curvature (21) is downward. The outer sides of the opening are symmetrically provided with guide rails (22). Two guide rails (22) are symmetrically provided on one side near the bottom. Two or more rollers (23) are provided on one side. The corresponding positions of the two inner sidewalls in the bottom frame (10) are provided with grooves for the guide rails (22) and rollers (23) to pass through. The circulating in-and-out mechanism (30) includes circulating tracks (31) symmetrically arranged on the two inner sides of the movable turnover frame (20). The circulating tracks (31) include a first track (311) on the two inner side walls of the movable turnover frame (20), a second track (312) that is connected to the upper end of the first track (311) by an arc transition and extends towards the processing device (2) while tilting downwards, a third track (313) that is connected to the far end of the second track (312) by an arc transition and extends vertically downwards, and a third track (313) that is connected to the lowest end of the third track (313) by an arc transition and extends towards the first track (311). The fourth track (314) extends laterally and slopes downwards into the first track (311). The first track (311), the second track (312), the third track (313), and the fourth track (314) on the same side form a closed-loop loop track (31). The straight sections in both sets of tracks are equipped with positioning strips (32). The middle section of the positioning strip (32) in the third track (313) is partially cut off. A pushing mechanism (36) is arranged above the cut-off section, and a picking mechanism (37) is arranged below the cut-off section to pick up the processed base (01) that is transmitted out. The pushing mechanism (36) includes a mounting base (361) fixed on the outside of the third track (313), a sliding guide (362) in the mounting base (361) that is driven to extend and retract by a cylinder, an ejection pusher (363) in the mounting base (361) that is driven by a cylinder, a cut-off section of the positioning strip (32) in the third track (313), and a positioning cylinder (364) in the mounting base (361) whose telescopic rod can enter the third track (313). The base (01) has multiple weight-reducing or process round holes and waist holes on the center line of the length direction; the sliding guide (362) includes a set of upper and lower guide rods (62a) and a guide rail (62b) for stabilizing the guide rods (62a) and a push base plate (62c) that connects the upper and lower sets of guide rods (62a) into a whole. The picking mechanism (37) includes a cut-off section of the positioning bar (32) in the third track (313), a telescopic cylinder (371) whose telescopic rod can enter the reversing limit cylinder (371) in the third track (313), and a compression molding cylinder (372) in the lower section of the cut-off section of the positioning bar (32) in the third track (313), which is fixed to the outside of the third track (313) and whose telescopic rod can enter the third track (313). The cyclic entry and exit mechanism (30) also includes one or more elastic pressure plates (35) set at each bend of the runway. Each elastic pressure plate (35) can obtain an elastic force that deflects towards the inside of the cyclic entry and exit mechanism (30) by connecting the pressure plate to an elastic band or setting a torsion spring at the shaft end. However, different elastic forces need to be given according to the different positions of the elastic pressure plates (35). The rotating clamping mold (40) has the same draft angle as the base (01), and has an opening on one side of the circle. The opening structure naturally shrinks inward. The base (01) can overcome the elastic force of the inward shrinkage and squeeze into the rotating clamping mold (40) to form a clamp. A cylindrical pulley (41) is provided on each side of the opening. A guide (42) is provided on the outer end face of the pulley (41). The guide (42) includes a vertical walking guide block (421) parallel to the large plane of the rotating clamping mold (40) and a horizontal walking guide block (422) that crosses the vertical walking guide block (421). There is a gap at the intersection of the two. The machining assembly (60) includes a main body (61) with a drive, clamping, and control system; a positioning frame (62) clamped at one end by a central shaft (a1) and positioned and connected by a rotating ring (a2) at the other end, mounted on the main body (61); a milling assembly (63) located above the main body (61) and detachably fixedly connected to the main body (61); a forward drilling assembly (64) located behind the machining assembly (60) and parallel to the central shaft (a1) axial direction, capable of translation along this axial direction and with a changeable distance from this axial direction; a lateral drilling assembly (65) located behind the machining assembly (60) and detachably fixedly connected to the two sides of the main body (61); and a magnetic seat (66) fixed on the main body (61), tightly rotatably engaged with the rotating ring (a2), and providing support for the rotating ring (a2). The processing steps are as follows: a. Prepare the material loading. Take two bases (01) as a group, and fill and flatten the material according to the draft angle of the base (01) and the draft angle of the transfer clamping mold (40). Put the base (01) into the transfer clamping mold (40) to form a clamp. Put multiple transfer clamping molds (40) that have been put into the base (01) into the movable turnover frame (20) according to the direction of the sliding groove on the guide (42) at both ends, and cooperate with the positioning strip (32) in the first track (311). Push the turnover device (1) with the small wheel rotation to the docking point on the loading and unloading side of the processing device (2), adjust the positioning support to make the stop and fix it, so that the two form a combined relationship. b. ① The turnover device (1) is started, and the circulation in-and-out mechanism (30) is activated. Under the lifting action of the lifting mechanism (38), the topmost circulating clamping mold (40) is pushed into the second track (312). Driven by gravity and corrected by the elastic pressure plate (35), the positioning strip (32) enters the gap guide groove of the transverse walking guide block (422). Under the correction of the positioning strip (32), the circulating clamping mold (40) moves along the second track (312) and the arc. After transitioning to the lower end of the upper section of the positioning strip (32) in the third track (313), the shifting clamping mold (40) has changed from horizontal to vertical after passing through an arc transition corner and the straightening of the elastic pressure plate (35). This makes the shifting clamping mold (40) parallel to the clamping mechanism (621) of the feed position of the processing device (2) when it stops at the positioning rod of the positioning cylinder (364). The draft angle is consistent, and the movable turnover frame (20) moves toward the processing device (2) and locks. The cantilever of the discharge conveyor belt (70) extends into the circulating feed mechanism (30) from the lower side of the pushing mechanism (36); the pushing mechanism (36) moves, the sliding guide (362) inserts into the casting process hole and weight reduction hole of the base (01), and the ejector pusher (363) pushes the base (01) along the sliding guide (362) out of the circulating clamping mold (40) with the reverse draft angle, and pushes it into the clamping mechanism (621) of the processing device (2); the positioning rod of the positioning cylinder (364) retracts, and the empty The empty transfer clamping mold (40) falls on the telescopic rod of the reversing limit cylinder (371), and the ejector pusher (363) pushes it again, pushing the empty transfer clamping mold (40) from vertical to horizontal. The telescopic rod of the reversing limit cylinder (371) retracts, and the transfer clamping mold (40) falls horizontally on the base (01) supported by the cantilever of the discharge conveyor belt (70) with the draft angle flared downward. The movable turnover frame (20) moves out of the processing device (2) and locks, and the cantilever of the discharge conveyor belt (70) follows out. c. The processing device (2) is in operation. The side of the positioning frame (62) that is used for loading is called the loading working surface. The opposite side is the first drilling and tapping working surface. The upward side is the milling working surface, and the downward side is the unloading working surface. The base (01) carried by the clamping mechanism (621) on the four sides is in different processing stages. The two end faces are the second drilling and tapping working surface and the third drilling and tapping working surface, respectively. After the positioning frame (62) is started, it rotates 90 degrees each time, and the base to be processed (01) is switched from the loading working surface, milling working surface, first drilling and tapping working surface and unloading working surface in sequence. After each switch, the magnetic seat (66) is locked and the outer ring frame (21b) is locked. On the loading work surface, the clamping mechanism (621) receives from the turnover device (1) and starts the clamping function to fix the base to be processed (01). At this time, the bottom plane (m3) of the base to be processed (01) faces outward and is higher than the clamping mechanism (621) to have milling space. The height is controlled by the stroke of the pushing mechanism (36) when pushing. The milling work surface is first completed by milling the bottom plane (m3) of the base (01) on the clamping mechanism (621). Then, the gear drive motor (22d) is started to move the push table box (22b) out of the positioning frame (62). The outer ring frame (21b) is locked and released. The flipping motor (a16) is started, the clamping mechanism (621) is rotated 180 degrees, the working surface (m1) of the base (01) is flipped upward, the top pressure member (a12) is released, and the two disc milling cutters are respectively moved to the top of the disc surface of the two bases (01) and lowered to the required height. The first piston assembly (22f) is started to push the two bases (01) upward until they are in contact with the disc milling cutters. Then the top pressure member (a12) is locked and the outer ring frame (21b) is locked. The first drilling and tapping working face is where the drilling and tapping of the installation holes for the base working face (m1) are completed; The second and third drilling and tapping working faces are used to complete the drilling and tapping of the mounting holes on the machine head mounting face (m2). This process can be carried out simultaneously with the first drilling and tapping working face. On the bottom working surface, the clamping mechanism (621) carrying a set of completed processing bases (01) is driven to rotate 180 degrees by the flipping motor (a16). When flipping, it is synchronized with the clamping mechanism (621) located on the milling working surface. It is pushed and unloaded onto the discharge conveyor belt (70) by the second piston assembly (22g) and sent to the cantilever of the discharge conveyor belt (70). It waits to re-enter the circulating in-out mechanism (30) and be picked up by the clamping mold 40. The empty clamping mechanism (621) rotates 90 degrees again with the positioning rotating frame (62) and returns to the loading working surface. d. The transfer clamping mold (40) fitted with the base (01) on the discharge conveyor belt (70) slides down horizontally under the action of gravity until it enters the lower bend. With the cooperation of another elastic pressure plate (35), it remains horizontal and enters the bottom of the fourth track (314). Then, the lifting mechanism (38) lifts it up and returns it to the stacking row of transfer clamping molds (40) in the turnover device (1). At the same time, the top layer of new base (01) to be processed is pushed out of the stacking row again as the transfer clamping mold (40) is lifted, and a new round of processing turnover is carried out. This cycle continues until all the bases (01) of the turnover device (1) are processed and the turnover device (1) leaves the processing device (2) as a whole.

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