A fully automatic milling device and method for screw processing

Abstract

The present invention relates to the field of screw processing technology, and discloses a fully automatic milling device for screw processing and a method thereof, comprising a workbench, wherein a cutting knife for milling a workpiece is provided on the workbench, a movable plate is slidably provided on the workbench, a positioning cylinder is rotatably provided on the movable plate, a clamp for fixing the workpiece is provided on the positioning cylinder, a lifting plate is slidably provided in the positioning cylinder, a rotating seat is rotatably provided on the lifting plate, a plurality of groups of support plates for supporting the inner wall of the workpiece are provided on the rotating seat, and a first transmission rod is fixed to the bottom of the lifting plate; before the workpiece is milled, the technical solution can insert the support plate into the interior of the workpiece, and use the support plate to support the inner wall of the workpiece, thereby reducing the possibility of extrusion deformation at the notch of the workpiece during the milling process, and improving the processing quality of the workpiece.

Description

Technical Field

[0001] The present invention relates to the technical field of screw processing, and in particular to a fully automatic slot milling device and method for screw processing. Background Art

[0002] Screws are tools that use the physics and mathematics of the circular rotation of an inclined surface and friction to gradually tighten objects and parts. Existing non-standard screws have a structure consisting of a threaded portion, a head, and a first and second notch arranged in a cross pattern. The inner diameter of non-standard screws can range from 18 to 50 mm. Milling is required during the processing of these non-standard screws.

[0003] When the non-standard screw is milled, the first notch is generally cut with a cutting knife, and then the workpiece is rotated 90 degrees before the second notch is cut. Since the end of the non-standard screw is a hollow structure, a notch appears at the end after the first notch is cut. For some non-standard screws made of non-steel materials, when the second notch is cut, the notch formed by the first notch reduces the force between the ends and the supporting force between each side, which makes the end prone to extrusion deformation and reduces the rationality of the milling process. Summary of the Invention

[0004] The present invention provides a fully automatic slot milling device and method for screw processing. Before the first slot and the second slot are cut on the workpiece, a support sheet is inserted into the interior of the workpiece, and multiple groups of support sheets are used to support the inner wall of the workpiece, thereby increasing the supporting force on the inner wall of the workpiece and reducing the possibility of extrusion deformation of the workpiece. This solves the problem mentioned in the above background technology that when cutting the second slot, the gap formed by the first slot reduces the force between the end portions and the supporting force between each side surface, thereby reducing the possibility of extrusion deformation of the end portions and reducing the rationality of slot milling processing.

[0005] The present invention provides the following technical solution: a fully automatic milling device for screw processing, comprising a workbench, wherein the workbench is provided with a cutting knife for milling a workpiece, a movable plate is slidably provided on the workbench, a positioning cylinder is rotatably provided on the movable plate, a clamp for fixing the workpiece is provided on the positioning cylinder, a lifting plate is slidably provided in the positioning cylinder, a rotating seat is rotatably provided on the lifting plate, and several groups of support plates for supporting the inner wall of the workpiece are provided on the rotating seat, a first transmission rod is fixed to the bottom of the lifting plate, a first slide groove for sliding of the first transmission rod is provided on the workbench, a limiting ball is fixed at the bottom end of the first transmission rod, and a first track groove is provided at the bottom end of the first slide groove, and the limiting ball drives the lifting plate to rise and fall by sliding inside the first track groove.

[0006] As an optional solution of the fully automatic milling groove device for screw processing described in the present invention, a core rod is provided for sliding inside the first transmission rod, the bottom end of the first slide groove is connected to a second slide groove for sliding the core rod, a first sliding protrusion is fixed to the bottom end of the core rod, a second track groove for sliding the first sliding protrusion is provided on the inner wall of the second slide groove, a slide rail for sliding the support plate is fixed on the upper surface of the rotating seat, a clamping assembly is provided between the end of the core rod and the support plate, and the clamping assembly slides in the second track groove through the first sliding protrusion to clamp the support plate against the inner wall of the workpiece.

[0007] As an optional solution of the fully automatic milling groove device for screw processing described in the present invention, the second trajectory groove includes a third horizontal portion, a second ascending portion, a third ascending portion, and a fourth horizontal portion which are sequentially connected from left to right, and a first descending portion and a second descending portion are connected between the fourth horizontal portion and the third horizontal portion, a first limit plate is elastically provided at the connection between the third ascending portion and the fourth horizontal portion, and a second limit plate is elastically provided at the connection between the second descending portion and the third horizontal portion.

[0008] As an optional solution of the fully automatic milling groove device for screw processing described in the present invention, the tightening assembly includes a connecting column rotatably connected to the end of the core rod, a first connecting rod is fixed on the support plate, the first connecting rod is slidably connected to the connecting column, a second sliding protrusion is fixed to the end of the first connecting rod, and an inclined groove is opened inside the connecting column for the second sliding protrusion to slide.

[0009] As an optional solution of the fully automatic milling groove device for screw processing described in the present invention, the tightening assembly includes a boss rotatably connected to the end of the core rod, a second connecting rod is fixed on the support plate, and a contact block that abuts against the boss is fixed at the end of the second connecting rod, a longitudinal plate is fixed on the surface of the rotating seat, the second connecting rod passes through the longitudinal plate and is slidably connected to the longitudinal plate, a spring is fixed between the longitudinal plate and the contact block, and the spring is movably sleeved on the circumference of the second connecting rod.

[0010] As an optional solution of the fully automatic milling groove device for screw processing described in the present invention, a first gear ring is fixed to the outer surface of the rotating seat, a gear plate is engaged on the first gear ring, the gear plate passes through the lifting plate and is slidably connected to the lifting plate, the gear plate is slidably arranged in the positioning cylinder, a third sliding protrusion is fixed to the end of the gear plate, and the inner wall of the positioning cylinder is provided with a third track groove for the sliding of the third sliding protrusion.

[0011] As an optional solution of the fully automatic milling groove device for screw processing described in the present invention, the third trajectory groove includes a vertical portion, a right-moving portion, a wavy portion and a left-moving portion that are connected in sequence, and a third limit plate is elastically provided at the connection between the vertical portion and the right-moving portion, and a fourth limit plate is elastically provided at the connection between the left-moving portion and the vertical portion.

[0012] As an optional solution of the fully automatic milling groove device for screw processing described in the present invention, an air cavity is provided inside the positioning cylinder, a piston plate is slidably provided inside the air cavity, a third connecting rod is fixed on the piston plate, a protrusion is fixed on the lifting plate, a second transmission rod is fixed between the protrusion and the third connecting rod, the second transmission rod is slidably provided in the positioning cylinder, a blowing hole is provided on the rotating seat, the bottom end of the blowing hole is connected to a first air guide groove, a second air guide groove is commonly provided between the protrusion, the second transmission rod, the third connecting rod and the piston plate, and the first air guide groove, the second air guide groove and the air cavity are connected.

[0013] As an optional solution of the fully automatic milling groove device for screw processing described in the present invention, a first servo motor is fixed inside the movable plate, a gear is fixed to the output end of the first servo motor, a second gear ring is fixed to the bottom end of the positioning cylinder, the gear is meshed with the second gear ring, a fixed plate is fixed to the workbench, a second servo motor is fixed to the fixed plate, a reciprocating screw is fixed to the output end of the second servo motor, a slider is threadedly connected to the circumference of the reciprocating screw, the slider is fixed to the movable plate, a support seat is fixed to the workbench, a third servo motor is fixed on the support seat, and the output end of the third servo motor is fixed to the cutting knife.

[0014] As an optional solution of the fully automatic slot milling device for screw processing of the present invention, a fully automatic slot milling method for screw processing includes the following steps:

[0015] S1. Place the workpiece into the positioning cylinder and fix it with a clamp, so that the movable plate moves toward the cutting blade;

[0016] S2. The movable plate moves toward the cutting blade, so that the lifting plate moves upward, and the lifting plate moves upward to drive the support sheet to move upward, and the support sheet is inserted into the interior of the workpiece to support the inner wall of the workpiece;

[0017] S3. The moving plate continues to move, so that the cutting blade performs milling on the top of the workpiece to form a first notch;

[0018] S4. First, the positioning cylinder is rotated 90 degrees, and then the movable plate is reset. The movable plate drives the workpiece through the cutting knife again, so that the cutting knife performs a secondary milling process on the top of the workpiece to form a second notch. The workpiece milling is completed;

[0019] S5. After the workpiece is milled, the lifting plate moves downward and resets, so that the rotating seat drives the support plate to rotate to the first notch and the second notch, and then the rotating seat drives the support plate to rotate back and forth, so that the support plate grinds the edges of the first notch and the second notch to remove burrs.

[0020] S6. When the lifting plate moves downward, air is blown to both sides of the support sheet through the air holes to blow away the burrs removed by grinding from the surface of the first notch and the second notch until the grinding is completed;

[0021] S7. The movable plate is reset, the supporting plates are closed together, and no longer contact the inner wall of the workpiece. The workpiece is released by the fixture, removed from the positioning cylinder, and replaced with a new workpiece to continue the groove milling process.

[0022] The present invention has the following beneficial effects:

[0023] 1. In the fully automatic milling device and method for screw processing, before the workpiece is milled, the first transmission rod slides in the first slide groove, driving the limiting ball to slide inside the first track groove, so that the limiting ball can drive the first transmission rod to move upward, and the first transmission rod drives the lifting plate, the rotating seat and the support piece to move upward synchronously, so that the support piece can be fully inserted into the interior of the workpiece, so that the support piece supports the inner wall of the workpiece in multiple directions, thereby increasing the supporting force on the inner wall of the workpiece during the milling process of the workpiece, reducing the extrusion deformation of the workpiece due to force, and thus helping to improve the rationality of the workpiece during milling.

[0024] 2. In the fully automatic slot milling device and method for screw processing, during the process of inserting the support sheet into the workpiece, the support sheet is first not in contact with the inner wall of the workpiece. Then, after the support sheet is fully inserted into the workpiece, the first sliding protrusion is driven by the core rod to slide in the second track groove, so that the core rod can move upward relative to the first transmission rod. Through the tightening component, when the core rod moves upward relative to the first transmission rod, it can drive the support sheet to slide on the slide rail, so that the support sheet expands outward, so that after the support sheet is fully inserted into the workpiece, the support sheet is fit with the inner wall of the workpiece, thereby reducing the wear of the support sheet caused by the insertion of the support sheet into the workpiece.

[0025] 3. In the fully automatic slot milling device and method for screw processing, when the lifting plate moves upward, it drives the tooth plate to move upward, and the tooth plate drives the third sliding protrusion to slide along the third track groove, so that when the lifting plate moves upward, the position of the rotating seat relative to the lifting plate does not move. When the lifting plate moves downward, the tooth plate can reciprocate left and right, so that the tooth plate can drive the first gear ring to rotate, and the rotation of the first gear ring drives the rotating seat to rotate, so that the rotating seat rotates back and forth relative to the lifting plate, and the rotating seat drives the supporting plate to grind the first notch and the second notch, so as to facilitate the removal of burrs on the inner walls of the first notch and the second notch.

[0026] 4. In the fully automatic milling groove device and method for screw processing, when the lifting plate moves upward, the piston plate is driven to move upward by the protrusion, the second transmission rod, and the third connecting rod, so that the air cavity is inflated. When the lifting plate moves downward, the gas is blown away from the blowing hole through the second air guide groove and the first air guide groove, so that the gas blown out of the blowing hole can blow away the burrs polished on the inner walls of the first notch and the second notch, thereby preventing the burrs from affecting the polishing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0028] Figure 2 It is a structural cross-sectional view of the workbench and movable plate part of the present invention.

[0029] Figure 3 For the present invention Figure 2 Enlarged view of point A in the middle.

[0030] Figure 4 It is a schematic diagram of the planar structure of the first track groove and the second track groove of the present invention.

[0031] Figure 5 This is one of the cross-sectional views of the internal structure of the positioning cylinder part in the present invention.

[0032] Figure 6 For the present invention Figure 5 Enlarged view of point B in the middle.

[0033] Figure 7 For the present invention Figure 5 Enlarged view of point C in the middle.

[0034] Figure 8 It is a structural schematic diagram of another technical solution of the tightening component in the present invention.

[0035] Figure 9 It is a structural schematic diagram of the first limiting plate part in the present invention.

[0036] Figure 10 It is a schematic structural diagram of the interior of the positioning cylinder in the present invention.

[0037] Figure 11 For the present invention Figure 10 Enlarged view of point D in the middle.

[0038] Figure 12 This is the second cross-sectional view of the internal structure of the positioning cylinder part in the present invention.

[0039] Figure 13 It is a structural schematic diagram of the finished workpiece in the present invention.

[0040] Figure 14 This is a diagram of the initial state of the support plate and the workpiece in the present invention.

[0041] Figure 15 This is a state diagram of the support plate in the present invention when grinding the workpiece.

[0042] In the figure: 1, workbench; 2, cutting blade; 3, moving plate; 4, positioning cylinder; 5, clamp; 6, lifting plate; 7, rotating seat; 8, supporting plate; 9, first transmission rod; 10, first slide groove; 11, limiting ball; 12, first track groove; 121, first horizontal portion; 122, first rising portion; 123, second horizontal portion; 13, core rod; 14, second slide groove; 15, first sliding protrusion; 16, second track groove; 16 1. Third horizontal portion; 162. Second ascending portion; 163. Third ascending portion; 164. Fourth horizontal portion; 165. First descending portion; 166. Second descending portion; 167. First stop plate; 168. Second stop plate; 17. Slide rail; 18. Connecting column; 19. First connecting rod; 20. Second sliding protrusion; 21. Inclined groove; 22. Boss; 23. Second connecting rod; 24. Contact block; 25. Vertical plate; 26 , spring; 27, first gear ring; 28, gear plate; 29, third sliding protrusion; 30, third track groove; 301, vertical portion; 302, rightward shift portion; 303, wave portion; 304, leftward shift portion; 305, third limit plate; 306, fourth limit plate; 31, air cavity; 32, piston plate; 33, third connecting rod; 34, protrusion; 35, second transmission rod; 36, blowing hole; 37, first air guide groove; 38, second Air guide groove; 39, first servo motor; 40, gear; 41, second gear ring; 42, fixed plate; 43, second servo motor; 44, reciprocating screw; 45, slider; 46, support seat; 47, third servo motor; 48, workpiece; 481, threaded portion; 482, head; 483, first notch; 484, second notch; 49, rotating groove; 50, rotating shaft; 51, stop block; 52, limit block; 53, torsion spring. DETAILED DESCRIPTION

[0043] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0044] For example 1, please refer to Figures 1-15 , a fully automatic milling device for screw processing includes a workbench 1, a cutting knife 2 for milling a workpiece 48 is provided on the workbench 1, a movable plate 3 is slidably provided on the workbench 1, a positioning cylinder 4 is rotatably provided on the movable plate 3, a clamp 5 for fixing the workpiece 48 is provided on the positioning cylinder 4, a lifting plate 6 is slidably provided in the positioning cylinder 4, a rotating seat 7 is rotatably provided on the lifting plate 6, and a plurality of support plates 8 for supporting the inner wall of the workpiece 48 are provided on the rotating seat 7, a first transmission rod 9 is fixed to the bottom of the lifting plate 6, a first slide groove 10 for sliding the first transmission rod 9 is provided on the workbench 1, a limiting ball 11 is fixed to the bottom end of the first transmission rod 9, a first track groove 12 is provided at the bottom end of the first slide groove 10, and the limiting ball 11 drives the lifting plate 6 to rise and fall by sliding in the first track groove 12;

[0045] A first servo motor 39 is fixed inside the movable plate 3, and a gear 40 is fixed to the output end of the first servo motor 39. A second gear ring 41 is fixed to the bottom end of the positioning cylinder 4, and the gear 40 is engaged with the second gear ring 41. A fixed plate 42 is fixed on the workbench 1, and a second servo motor 43 is fixed on the fixed plate 42. A reciprocating screw rod 44 is fixed to the output end of the second servo motor 43, and a slider 45 is threadedly connected to the circumference of the reciprocating screw rod 44. The slider 45 is fixed to the movable plate 3, and a support base 46 is fixed on the workbench 1. A third servo motor 47 is fixed on the support base 46, and the output end of the third servo motor 47 is fixed to the cutting knife 2.

[0046] In the present technical solution, the first track groove 12 includes a first horizontal portion 121, a first rising portion 122, and a second horizontal portion 123 which are sequentially connected from left to right. When the workpiece 48 is milled, the workpiece 48 is first placed in a corresponding position on the positioning cylinder 4, and the bottom end of the workpiece 48 is clamped and fixed by the clamp 5. The clamp 5 is a prior art and can be a three-jaw chuck. As long as it can fix the workpiece 48, it is not an innovation of the present application and will not be described in detail.

[0047] After the workpiece 48 is fixed, the reciprocating screw 44 is driven to rotate by the second servo motor 43, the reciprocating screw 44 drives the slider 45 to move, the slider 45 drives the moving plate 3 to move, the moving plate 3 drives the positioning cylinder 4 to move, the positioning cylinder 4 drives the workpiece 48 to move toward the cutting knife 2, and at the same time the third servo motor 47 drives the cutting knife 2 to rotate. In the process of the positioning cylinder 4 driving the workpiece 48 to move toward the cutting knife 2, the positioning cylinder 4 drives the first transmission rod 9 to slide along the first sliding groove 10, and the first transmission rod 9 drives the limiting ball 11 to slide along the first track groove 12. The limiting ball 11 first slides along the first horizontal portion 121 and then slides along the first rising portion 122, so that the limiting ball 11 drives the first transmission rod 9 to move upward, the first transmission rod 9 drives the lifting plate 6 to move upward, and the lifting plate 6 drives the plurality of groups of support plates 8 to move upward, inserting the support plates 8 into the interior of the workpiece 48, and using the support plates 8 to support the inner wall of the workpiece 48 to prevent the workpiece 48 from being squeezed and deformed during groove milling; the plurality of groups of support plates 8 can be four groups, and the four groups of support plates 8 are arranged in a circular array on the rotating seat 7;

[0048] When the limiting ball 11 slides along the second horizontal portion 123, the cutting knife 2 cuts the head 482 of the workpiece 48 to form a first notch 483. When the limiting ball 11 slides to the rightmost end of the second horizontal portion 123, the first servo motor 39 drives the gear 40 to rotate, the gear 40 drives the second gear ring 41 to rotate, the second gear ring 41 drives the positioning cylinder 4 to rotate, and the positioning cylinder 4 drives the fixed workpiece 48 to rotate, so that the workpiece 48 rotates 90 degrees, and then the slider 45 moves in the opposite direction along the reciprocating screw 44 to reset, so that the limiting ball 11 moves along the rightmost end of the second horizontal portion 123. As the second horizontal portion 123 moves to the left, the head 482 of the workpiece 48 is cut again by the cutting knife 2 to form a second notch 484, completing the milling process of the workpiece 48, and then the limiting ball 11 moves to the left along the first rising portion 122, so that the limiting ball 11 drives the first transmission rod 9 to move downward and reset, and the first transmission rod 9 drives the lifting plate 6 and the rotating seat 7 to move downward and reset, thereby removing the support plate 8 from the inside of the workpiece 48, and finally opening the clamp 5, removing the processed workpiece 48, replacing the new workpiece 48 and continuing the milling process.

[0049] In the second embodiment, when the support sheet 8 is inserted into the workpiece 48, in order to support the inner wall of the workpiece 48, it is necessary to fit closely with the inner wall of the workpiece 48. Therefore, when the support sheet 8 is inserted into the workpiece 48, there will be friction between the support sheet 8 and the inner wall of the workpiece 48, thereby increasing the wear of the support sheet 8 when inserted into the inner wall of the workpiece 48. To address this problem, this embodiment is an improvement made on the basis of the first embodiment. For details, please refer to Figures 1-15, a core rod 13 is provided for sliding inside the first transmission rod 9, and the bottom end of the first slide groove 10 is connected to a second slide groove 14 for sliding the core rod 13, and a first sliding protrusion 15 is fixed to the bottom end of the core rod 13. A second track groove 16 for sliding the first sliding protrusion 15 is provided on the inner wall of the second slide groove 14, and a slide rail 17 for sliding the support piece 8 is fixed on the upper surface of the rotating seat 7. A tightening assembly is provided between the end of the core rod 13 and the support piece 8, and the tightening assembly slides the first sliding protrusion 15 in the second track groove 16 to tighten the support piece 8 against the inner wall of the workpiece 48;

[0050] The second track groove 16 includes a third horizontal portion 161, a second rising portion 162, a third rising portion 163, and a fourth horizontal portion 164, which are sequentially connected from left to right. A first descending portion 165 and a second descending portion 166 are connected between the fourth horizontal portion 164 and the third horizontal portion 161. A first limiting plate 167 is elastically provided at the connection between the third rising portion 163 and the fourth horizontal portion 164, and a second limiting plate 168 is elastically provided at the connection between the second descending portion 166 and the third horizontal portion 161.

[0051] The tightening assembly includes a connecting column 18 rotatably connected to the end of the core rod 13, a first connecting rod 19 is fixed on the support plate 8, the first connecting rod 19 is slidably connected to the connecting column 18, a second sliding protrusion 20 is fixed to the end of the first connecting rod 19, and an inclined groove 21 is opened inside the connecting column 18 for the second sliding protrusion 20 to slide.

[0052] In the present technical solution, before the support piece 8 is inserted into the interior of the workpiece 48, the support piece 8 does not contact the inner wall of the workpiece 48; when the first transmission rod 9 slides along the first slide groove 10, it drives the core rod 13 to slide along the second slide groove 14, and when the limiting ball 11 slides along the first rising portion 122, the core rod 13 drives the first sliding protrusion 15 to slide along the second rising portion 162, so that the core rod 13 and the first transmission rod 9 move upward synchronously, so that the support piece 8 is inserted into the interior of the workpiece 48 without contacting the inner wall of the workpiece 48, and when the limiting ball 11 just slides along the second horizontal portion 123, the first sliding protrusion 15 slides along the third rising portion 163, so that the core rod 13 and the first transmission rod 9 move upward synchronously, so that the support piece 8 is inserted into the interior of the workpiece 48 without contacting the inner wall of the workpiece 48, and when the limiting ball 11 just slides along the second horizontal portion 123, the first sliding protrusion 15 slides along the third rising portion 163, so that the core rod 13 As the first transmission rod 9 moves upward, the core rod 13 moves upward to drive the connecting column 18 to move upward. The upward movement of the connecting column 18 causes the first connecting rod 19 to slide relative to the connecting column 18. The first connecting rod 19 drives the second sliding protrusion 20 to slide along the inclined groove 21, so that the second sliding protrusion 20 drives the first connecting rod 19 to move toward the outside of the connecting column 18. The first connecting rod 19 moves outward, driving the support plate 8 to slide along the slide rail 17, so that the support plate 8 moves toward the inner wall of the workpiece 48 and completes the fit with the inner wall of the workpiece 48, so that after the support plate 8 is fully inserted into the workpiece 48, the support plate 8 can support the inner wall of the workpiece 48, thereby reducing wear.

[0053] Example 3: This example is another technical solution for tightening the assembly. For details, please refer to Figures 1-15 The tightening assembly includes a boss 22 rotatably connected to the end of the core rod 13, a second connecting rod 23 is fixed on the support piece 8, and a contact block 24 that contacts the boss 22 is fixed to the end of the second connecting rod 23. A longitudinal plate 25 is fixed to the surface of the rotating seat 7. The second connecting rod 23 passes through the longitudinal plate 25 and is slidably connected to the longitudinal plate 25. A spring 26 is fixed between the longitudinal plate 25 and the contact block 24, and the spring 26 is movably sleeved on the circumference of the second connecting rod 23.

[0054] In this technical solution, the contact surfaces of the boss 22 and the contact block 24 are both set to an inclined structure. When the core rod 13 moves upward, the boss 22 is driven to move upward, and the boss 22 moves upward to resist the contact block 24, so that the contact block 24 slides along the surface of the boss 22, prompting the contact block 24 to move outward, and at the same time compresses the spring 26, so that the spring 26 accumulates force, and the contact block 24 moves outward and drives the second connecting rod 23 to move outward. The second connecting rod 23 drives the support piece 8 to slide on the slide rail 17, so that the support piece 8 moves toward the inner wall of the workpiece 48 and completes the fit with the inner wall of the workpiece 48, so that the support piece 8 can support the inner wall of the workpiece 48 after it is fully inserted into the interior of the workpiece 48; when the core rod 13 drives the boss 22 to move downward, the spring 26 releases the force, so that the support piece 8 is reset.

[0055] In the fourth embodiment, after the first notch 483 and the second notch 484 are cut, there will be some burrs on the inner surface of the notch. Since the burrs are located on one side of the inner wall of the workpiece 48, it is inconvenient to handle them. To address this problem, this embodiment is an improvement made on the basis of the second or third embodiment. For details, please refer to Figures 1-15 A first gear ring 27 is fixed to the outer surface of the rotating seat 7, and a gear plate 28 is meshed on the first gear ring 27. The gear plate 28 passes through the lifting plate 6 and is slidably connected to the lifting plate 6. The gear plate 28 is slidably arranged in the positioning cylinder 4. A third sliding protrusion 29 is fixed to the end of the gear plate 28. The inner wall of the positioning cylinder 4 is provided with a third track groove 30 for the sliding of the third sliding protrusion 29;

[0056] The third track groove 30 includes a vertical portion 301, a rightward portion 302, a wavy portion 303 and a leftward portion 304 which are connected in sequence. A third limiting plate 305 is elastically provided at the connection between the vertical portion 301 and the rightward portion 302, and a fourth limiting plate 306 is elastically provided at the connection between the leftward portion 304 and the vertical portion 301.

[0057] In this technical solution, when the first notch 483 and the second notch 484 of the workpiece 48 are cut, the core rod 13 drives the first sliding protrusion 15 to slide from right to left. Figure 4As shown, due to the restriction of the first limiting plate 167, the first sliding protrusion 15 can only slide from the fourth horizontal portion 164 to the first descending portion 165. The first descending portion 165 and the first ascending portion 122 have the same trajectory, so that the core rod 13 and the first transmission rod 9 maintain the same relative position. At this time, during the process of the support piece 8 moving downward and resetting, the support piece 8 is always in close contact with the inner wall of the workpiece 48.

[0058] In this technical solution, when the lifting plate 6 drives the support piece 8 to move upward, the lifting plate 6 drives the tooth plate 28 to move upward, and the tooth plate 28 drives the third sliding protrusion 29 to slide upward along the vertical portion 301 of the third track groove 30. When the lifting plate 6 drives the support piece 8 to move downward, the third sliding protrusion 29 slides along the right-moving portion 302, so that the third sliding protrusion 29 drives the tooth plate 28 to move rightward, and the tooth plate 28 moves rightward to drive the first gear ring 27 to rotate. The rotation of the first gear ring 27 drives the rotating seat 7 to rotate, and the rotation of the rotating seat 7 drives the support piece 8 to rotate, so that the support piece 8 is moved from Figure 14 Status turns to Figure 15 State, then the third sliding protrusion 29 slides along the wave portion 303, causing the tooth plate 28 to reciprocate left and right, the reciprocating movement of the tooth plate 28 drives the first gear ring 27 to reciprocate forward and reverse, the first gear ring 27 drives the rotating seat 7 to reciprocate forward and reverse, so that the rotating seat 7 drives the support plate 8 to reciprocate back and forth at the first notch 483 and the second notch 484, so that the support plate 8 grinds the inner side of the first notch 483 and the second notch 484, and finally the third sliding protrusion 29 slides along the left shift portion 304, causing the support plate 8 to return to Figure 14 In this state, the lifting plate 6 is restored to the lowest position, and then the first sliding protrusion 15 slides along the second descending portion 166, so that the core rod 13 moves downward relative to the first transmission rod 9. The core rod 13 moves downward, so that the supporting piece 8 contracts inward and no longer contacts the inner wall of the workpiece 48;

[0059] In this technical solution, the first limit plate 167 can only be pressed Figure 4 The state rotates counterclockwise. After rotating counterclockwise and resetting, you cannot press Figure 4The state rotates clockwise, so that when the first sliding protrusion 15 slides to the right, it slides from the second rising portion 162 to the fourth horizontal portion 164. When the first sliding protrusion 15 slides to the left, it can only slide from the fourth horizontal portion 164 to the first descending portion 165. Similarly, the setting of the second limiting plate 168 enables the first sliding protrusion 15 to slide only from the second descending portion 166 to the third horizontal portion 161, and then slide along the third horizontal portion 161 to the second rising portion 162, and will not slide from the third horizontal portion 161 to the second descending portion 166. The setting of the third limiting plate 305 enables the third sliding protrusion 29 to slide only from the vertical portion 301 to the rightward moving portion 302. The setting of the fourth limiting plate 306 enables the third sliding protrusion 29 to slide only from the leftward moving portion 304 to the vertical portion 301, thereby completing a cycle.

[0060] The structures and principles of the second limiting plate 168, the third limiting plate 305, and the fourth limiting plate 306 are the same as those of the first limiting plate 167. The following describes the structure of the first limiting plate 167 as an example: Figure 9 As shown, a rotating groove 49 is provided on the inner wall of the workbench 1, and a rotating shaft 50 is rotatably arranged in the rotating groove 49, and the first limit plate 167 is fixedly sleeved on the rotating shaft 50, and a stop block 51 is fixed on the inner wall of the rotating groove 49. The surface of the first limit plate 167 is fixed with a limit block 52, and a torsion spring 53 is sleeved on the circumference of the rotating shaft 50, and the a end of the torsion spring 53 is fixed to the inner wall of the rotating groove 49, and the b end of the torsion spring 53 is fixed to the first limit plate 167; when the first limit plate 167 slides from the second rising portion 162 to the fourth horizontal portion 164, the first sliding protrusion 15 contacts the first limit plate 167, causing the first limit plate 167 to rotate counterclockwise, and the torsion spring 53 accumulates force. When the first sliding protrusion 15 slides into the fourth horizontal portion 164, the first limit plate 167 loses the contact of the first sliding protrusion 15, and the torsion spring 53 releases the force, causing the first limit plate 167 to return to Figure 9 Then when the first sliding protrusion 15 slides back, due to the restriction of the stopper 51 on the limit block 52, so that the first limit plate 167 can only maintain Figure 9 state, so that the first sliding protrusion 15 can only slide from the fourth horizontal portion 164 to the first descending portion 165.

[0061] In the fifth embodiment, when the support sheet 8 is grinding the inner wall of the workpiece 48, some burrs and debris will be generated on the surface of the workpiece 48 and adsorbed on the surface of the workpiece 48, thereby affecting the grinding effect. To solve this problem, this embodiment is an improvement made on the basis of the fourth embodiment. For details, please refer to Figures 1-15An air cavity 31 is provided inside the positioning cylinder 4, and a piston plate 32 is slidably provided inside the air cavity 31. A third connecting rod 33 is fixed on the piston plate 32, and a protrusion 34 is fixed on the lifting plate 6. A second transmission rod 35 is fixed between the protrusion 34 and the third connecting rod 33. The second transmission rod 35 is slidably provided in the positioning cylinder 4, and a blowing hole 36 is provided on the rotating seat 7. The bottom end of the blowing hole 36 is connected to a first air guide groove 37. A second air guide groove 38 is commonly provided between the protrusion 34, the second transmission rod 35, the third connecting rod 33 and the piston plate 32. The first air guide groove 37, the second air guide groove 38 and the air cavity 31 are connected.

[0062] In this technical solution, if Figure 12 As shown, when the lifting plate 6 moves upward, the protrusion 34 moves upward, the protrusion 34 drives the second transmission rod 35 to move upward, the second transmission rod 35 drives the third connecting rod 33 to move upward, and the third connecting rod 33 drives the piston plate 32 to move upward, so that the air cavity 31 is inflated. When the lifting plate 6 moves downward, the protrusion 34, the second transmission rod 35, the third connecting rod 33 and the piston plate 32 move downward, so that the air cavity 31 is deflated, and the gas is discharged from the blowing hole 36 through the second air guide groove 38 and the first air guide groove 37, and is blown to the notch surface of the workpiece 48 through the blowing hole 36, thereby facilitating the removal of burrs polished on the notch to prevent the burrs from affecting the polishing effect.

[0063] In the present technical solution, an air inlet is provided on one side of the air cavity 31, and a first one-way valve is provided in the air inlet. The first one-way valve allows gas to enter the air cavity 31 only from the air inlet and cannot be discharged from the air inlet hole 36. A second one-way valve is provided in the second air guide groove 38. The second one-way valve allows gas to be discharged only from the second air guide groove 38 and cannot enter the air cavity 31 from the second air guide groove 38, thereby achieving exhaust only from the blowing hole 36; the opening at the connection between the first air guide groove 37 and the second air guide groove 38 is larger, so that when the rotating seat 7 rotates, the first air guide groove 37 is always in a connected state with the second air guide groove 38.

[0064] Example 6: This example is an improvement made on the basis of Example 5. For details, please refer to Figures 1-15 , a fully automatic slot milling method for screw processing, comprising the following steps:

[0065] S1. The workpiece 48 is placed in the positioning cylinder 4 and fixed by the fixture 5, so that the movable plate 3 moves toward the cutting blade 2;

[0066] S2. The movable plate 3 moves toward the cutting blade 2, so that the lifting plate 6 moves upward, and the lifting plate 6 moves upward to drive the support sheet 8 to move upward, and the support sheet 8 is inserted into the interior of the workpiece 48 to support the inner wall of the workpiece 48;

[0067] S3. The movable plate 3 continues to move, so that the cutting blade 2 performs milling on the top of the workpiece 48 to form a first notch 483;

[0068] S4. First, the positioning cylinder 4 is rotated 90 degrees, and then the movable plate 3 is reset. The movable plate 3 drives the workpiece 48 again through the cutting blade 2, so that the cutting blade 2 performs a secondary milling process on the top of the workpiece 48 to form a second notch 484. The milling of the workpiece 48 is completed;

[0069] S5. After the workpiece 48 is milled, the lifting plate 6 is moved downward and reset, so that the rotating seat 7 drives the support plate 8 to rotate to the first notch 483 and the second notch 484, and then the rotating seat 7 drives the support plate 8 to rotate back and forth, so that the support plate 8 grinds the edges of the first notch 483 and the second notch 484 to remove burrs;

[0070] S6. When the lifting plate 6 moves downward, air is blown to both sides of the support sheet 8 through the air holes 36 to blow away the burrs removed by grinding from the surface of the first notch 483 and the second notch 484 until the grinding is completed;

[0071] S7. The movable plate 3 is reset, the supporting plates 8 are closed together and no longer contact the inner wall of the workpiece 48. The workpiece 48 is released by the fixture 5, and the workpiece 48 is removed from the positioning cylinder 4. A new workpiece 48 is replaced to continue the groove milling process.

[0072] In this technical solution, before the first notch 483 and the second notch 484 are cut on the workpiece 48, the support sheet 8 is inserted into the inner wall of the workpiece 48 and the inner wall of the workpiece 48 is supported by the support sheet 8. This can increase the stability of the workpiece 48 and reduce the extrusion deformation of the workpiece 48 during the milling process. At the same time, after the first notch 483 and the second notch 484 are cut, the support sheet 8 can be moved back and forth to polish the notches, thereby facilitating the removal of burrs at the first notch 483 and the second notch 484.

[0073] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0074] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A fully automatic slot milling device for screw processing, comprising a workbench (1), on which a cutting knife (2) for slot milling a workpiece (48) is provided, characterized in that: A movable plate (3) is slidingly provided on the workbench (1), a positioning cylinder (4) is rotatably provided on the movable plate (3), a clamp (5) for fixing the workpiece (48) is provided on the positioning cylinder (4), a lifting plate (6) is slidingly provided in the positioning cylinder (4), a rotating seat (7) is rotatably provided on the lifting plate (6), and a plurality of supporting plates (8) for supporting the inner wall of the workpiece (48) are provided on the rotating seat (7), a first transmission rod (9) is fixed to the bottom of the lifting plate (6), a first sliding groove (10) for sliding the first transmission rod (9) is provided on the workbench (1), a limiting ball (11) is fixed to the bottom end of the first transmission rod (9), a first track groove (12) is provided at the bottom end of the first sliding groove (10), and the limiting ball (11) drives the lifting plate (6) to move up and down by sliding in the first track groove (12); The first transmission rod (9) is provided with a core rod (13) for sliding inside, the bottom end of the first slide groove (10) is connected to a second slide groove (14) for the core rod (13) to slide, the bottom end of the core rod (13) is fixed with a first sliding protrusion (15), the inner wall of the second slide groove (14) is provided with a second track groove (16) for the first sliding protrusion (15) to slide, the upper surface of the rotating seat (7) is fixed with a slide rail (17) for the support plate (8) to slide, and a tightening component is provided between the end of the core rod (13) and the support plate (8), and the tightening component slides in the second track groove (16) through the first sliding protrusion (15) so that the support plate (8) presses against the inner wall of the workpiece (48); The second track groove (16) comprises a third horizontal portion (161), a second rising portion (162), a third rising portion (163), and a fourth horizontal portion (164) which are sequentially connected from left to right; a first descending portion (165) and a second descending portion (166) are connected between the fourth horizontal portion (164) and the third horizontal portion (161); a first limiting plate (167) is elastically provided at the connection between the third rising portion (163) and the fourth horizontal portion (164); and a second limiting plate (168) is elastically provided at the connection between the second descending portion (166) and the third horizontal portion (161).

2. The fully automatic slot milling device for screw processing according to claim 1, characterized in that: The tightening assembly includes a connecting column (18) rotatably connected to the end of the core rod (13), a first connecting rod (19) is fixed on the support plate (8), the first connecting rod (19) is slidably connected to the connecting column (18), a second sliding protrusion (20) is fixed to the end of the first connecting rod (19), and an inclined groove (21) is provided inside the connecting column (18) for the second sliding protrusion (20) to slide.

3. The fully automatic slot milling device for screw processing according to claim 1, characterized in that: The tightening assembly includes a boss (22) rotatably connected to the end of the core rod (13), a second connecting rod (23) is fixed on the support plate (8), and a contact block (24) is fixed at the end of the second connecting rod (23) and contacts the boss (22), a longitudinal plate (25) is fixed on the surface of the rotating seat (7), the second connecting rod (23) passes through the longitudinal plate (25) and is slidably connected to the longitudinal plate (25), a spring (26) is fixed between the longitudinal plate (25) and the contact block (24), and the spring (26) is movably sleeved on the circumference of the second connecting rod (23).

4. The fully automatic slot milling device for screw machining according to claim 1, characterized in that: A first gear ring (27) is fixed on the outer surface of the rotating seat (7), a gear plate (28) is engaged with the first gear ring (27), the gear plate (28) passes through the lifting plate (6) and is slidably connected to the lifting plate (6), the gear plate (28) is slidably arranged in the positioning cylinder (4), a third sliding protrusion (29) is fixed at the end of the gear plate (28), and a third track groove (30) for the sliding of the third sliding protrusion (29) is opened on the inner wall of the positioning cylinder (4).

5. The fully automatic slot milling device for screw machining according to claim 4, characterized in that: The third track groove (30) comprises a vertical portion (301), a rightward displacement portion (302), a wave portion (303) and a leftward displacement portion (304) which are sequentially connected. A third limiting plate (305) is elastically provided at the connection between the vertical portion (301) and the rightward displacement portion (302), and a fourth limiting plate (306) is elastically provided at the connection between the leftward displacement portion (304) and the vertical portion (301).

6. The fully automatic slot milling device for screw machining according to claim 5, characterized in that: An air cavity (31) is provided inside the positioning cylinder (4), a piston plate (32) is slidably provided inside the air cavity (31), a third connecting rod (33) is fixed on the piston plate (32), a convex block (34) is fixed on the lifting plate (6), a second transmission rod (35) is fixed between the convex block (34) and the third connecting rod (33), the second transmission rod (35) is slidably provided in the positioning cylinder (4), an air blowing hole (36) is provided on the rotating seat (7), a first air guide groove (37) is provided at the bottom end of the air blowing hole (36), a second air guide groove (38) is provided between the convex block (34), the second transmission rod (35), the third connecting rod (33) and the piston plate (32), the first air guide groove (37), the second air guide groove (38) and the air cavity (31) are communicated.

7. The fully automatic slot milling device for screw machining according to claim 6, characterized in that: A first servo motor (39) is fixed inside the movable plate (3), a gear (40) is fixed to the output end of the first servo motor (39), a second gear ring (41) is fixed to the bottom end of the positioning cylinder (4), the gear (40) is meshed with the second gear ring (41), a fixed plate (42) is fixed on the workbench (1), a second servo motor (43) is fixed on the fixed plate (42), a reciprocating screw (44) is fixed to the output end of the second servo motor (43), a slider (45) is threadedly connected on the circumference of the reciprocating screw (44), the slider (45) is fixed to the movable plate (3), a support seat (46) is fixed on the workbench (1), a third servo motor (47) is fixed on the support seat (46), and the output end of the third servo motor (47) is fixed to the cutting knife (2).

8. A fully automatic slot milling method for screw processing, characterized in that: The fully automatic slot milling device for screw machining according to claim 7 comprises the following steps: S1. Place the workpiece (48) into the positioning cylinder (4), fix it with a fixture (5), and move the movable plate (3) toward the cutting blade (2); S2. The movable plate (3) moves toward the cutting blade (2), so that the lifting plate (6) moves upward, and the lifting plate (6) moves upward to drive the support plate (8) to move upward, and the support plate (8) is inserted into the interior of the workpiece (48) to support the inner wall of the workpiece (48); S3. The movable plate (3) continues to move, so that the cutting blade (2) performs milling processing on the top of the workpiece (48) to form a first notch (483); S4. First, the positioning cylinder (4) is rotated 90 degrees, and then the movable plate (3) is reset. The movable plate (3) drives the workpiece (48) to pass through the cutting blade (2) again, so that the cutting blade (2) performs a secondary milling process on the top of the workpiece (48), forming a second notch (484). The milling of the workpiece (48) is completed; S5. After the milling of the workpiece (48) is completed, the lifting plate (6) moves downward and resets, so that the rotating seat (7) drives the support plate (8) to rotate to the first notch (483) and the second notch (484), and then the rotating seat (7) drives the support plate (8) to rotate back and forth, so that the support plate (8) grinds the edge portions of the first notch (483) and the second notch (484) to remove burrs; S6. When the lifting plate (6) moves downward, air is blown toward both sides of the support plate (8) through the air holes (36) to blow away the burrs removed by grinding from the surfaces of the first notch (483) and the second notch (484) until grinding is completed; S7. The movable plate (3) is reset, the supporting plates (8) are closed together and no longer contact the inner wall of the workpiece (48), the workpiece (48) is released by the fixture (5), the workpiece (48) is removed from the positioning cylinder (4), and a new workpiece (48) is replaced to continue the groove milling process.

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