Main shaft system capable of achieving friction material adding and friction stir welding

Abstract

The invention relates to the field of friction additive manufacturing and the technical field of friction stir welding, in particular to a main shaft system capable of achieving friction additive and friction stir welding, which comprises a driving device, a main shaft is movably connected in the driving device, and a welding shaft head is placed on the outer side of the main shaft. The top of the driving device is fixedly connected with feeding devices, a material bar is placed between the feeding devices, and the upper portion of the interior of the driving device is fixedly connected with an extrusion device. By arranging the main shaft and the welding shaft head, friction material adding and friction stir welding processes can be conducted on the same equipment, when the friction welding process needs to be conducted, friction stir welding can be conducted by fixing the welding shaft head to the bottom of the material adding shaft head, and when the friction material adding process needs to be conducted, a second bolt is screwed off, an inserting column is pulled, and the welding shaft head is fixed to the bottom of the material adding shaft head. Therefore, the welding shaft head can be taken down, and the friction material adding process is carried out through the material adding shaft head.

Description

Technical Field

[0001] The invention relates to the fields of friction material additive manufacturing and friction stir welding, and in particular to a spindle system capable of realizing friction material additive manufacturing and friction stir welding. Background Art

[0002] Additive manufacturing is the process of manufacturing solid parts by layering and stacking materials. Compared with traditional processing methods such as casting and welding, it has the advantages of high efficiency and speed. Especially for the processing of complex and precise structural parts, it has high flexibility and adaptability. Currently, the commonly used additive technologies include laser powder sintering additive, electron beam powder sintering additive, fused deposition modeling additive, stir friction solid additive, etc.

[0003] Friction stir additive manufacturing is a solid-phase additive technology developed based on friction stir welding. It uses the friction heat generated by the high-speed extrusion friction between the friction stir tool and the cladding material to accumulate and diffuse the cladding material layer by layer to form a connection. It avoids defects such as solidification shrinkage, thermal cracks, and pores. It is an efficient, low-defect additive process. The cladding materials for friction stir additive manufacturing mainly include metal bars, metal wires, metal particles, etc. Existing equipment with friction additive functions can generally only realize friction additive processes. To achieve friction stir welding, another device is required, and the function is relatively simple. Summary of the invention

[0004] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a spindle system capable of achieving friction material addition and friction stir welding.

[0005] In order to achieve the above-mentioned objectives, the present invention adopts the following technical scheme: a spindle system capable of realizing friction additive and stir friction welding, comprising a driving device, the driving device is movably connected to the spindle inside, a welding shaft head is placed on the outside of the spindle, a feeding device is fixedly connected to the top of the driving device, a material rod is placed between the feeding devices, an extrusion device is fixedly connected to the upper part of the driving device, the spindle comprises a shaft body movably connected to the inside of the driving device, a guide cylinder is movably connected to the inside of the shaft body, an additive shaft head is placed at the bottom of the shaft body, a first bolt is threadedly connected to the connection between the shaft body and the additive shaft head, a second gear is fixedly connected to the outside of the shaft body, a limiting sleeve is fixedly connected above and below the second gear on the outside of the shaft body, and the upper part of the outer side of the guide cylinder is fixedly connected to the driving device.

[0006] The driving device includes a shell, baffles are fixedly connected to both sides of the shell, a bracket is fixedly connected to the rear side of the top of the shell, a driving motor is fixedly connected to the rear side of the inside of the shell, and a first gear is fixedly connected to the output end of the driving motor, and the first gear is meshed with a second gear.

[0007] The feeding device includes a slide rail fixedly connected to the top of the outer shell, the front end of the slide rail is fixedly connected to an adjusting motor, the output end of the adjusting motor is fixedly connected to an adjusting stud, the outer side of the adjusting stud is threadedly connected to a fixing frame, the left side of the fixing frame is fixedly connected to a hydraulic device, the left side of the hydraulic device is fixedly connected to a fixing shell, and the slide rail is slidably connected to the fixing frame.

[0008] The extrusion device includes a limiting cylinder fixedly connected to the inside of the bracket, the top of the limiting cylinder is fixedly connected to an extrusion motor, the extrusion motor is fixedly connected to the bracket, the output end of the extrusion motor is fixedly connected to an extrusion stud, the outer side of the extrusion stud is threadedly connected to a lifting column, the lifting column is slidably connected to the limiting cylinder, the bottom end of the lifting column is fixedly connected to a pressure plate, and the bottom of the pressure plate is fixedly connected to an anti-slip pad.

[0009] The welding shaft head includes a welding head placed on the outside of the additive shaft head, and both sides of the welding head are fixedly connected with fixed cylinders. The fixed cylinder includes a cylinder body fixedly connected to both sides of the welding head, and the inside of the cylinder body is movably connected with a plug column, a spring is fixedly connected between the cylinder body and the plug column, and the outer side of the cylinder body is threadedly connected with a second bolt.

[0010] The additive shaft head includes an additive head placed at the bottom of the shaft body, a chip cutter is fixedly connected to the inner side of the additive head, fixed blocks are fixedly connected to both sides of the additive head, a stirring block is fixedly connected to the bottom of the additive head, and a screw groove is provided on the outer side of the additive head.

[0011] The diameter of the material rod is slightly larger than the diameter of the inner side of the fixed shell, and the diameter of the material rod is the same as the diameter of the inner side of the guide cylinder. The top of the upper limit sleeve on the outer side of the shaft body fits with the driving device, and the lower part of the lower limit sleeve on the outer side of the shaft body fits with the driving device.

[0012] The tops of the housing, baffle and guide cylinder are in the same plane.

[0013] The present invention has the following beneficial effects: 1. Compared with the prior art, the spindle system capable of realizing friction additive and friction stir welding is advantageous for carrying out friction additive and friction stir welding processes on the same equipment by providing a spindle and a welding shaft head. When the friction welding process is required, the plug column is pulled to both sides so that the welding shaft head can be placed on the outside of the additive shaft head and can fit with the outside and bottom of the additive shaft head. When the plug column is loosened, the plug column can be inserted into the fixed block under the action of the spring, so that the welding shaft head is fixed on the additive shaft head, and the second bolt is screwed so that it can be inserted into the plug column, so that the position of the plug column is fixed to prevent it from moving due to the action of centrifugal force. The welding shaft head is driven by the driving device to rotate so that it can carry out the friction stir welding process. When the friction additive process is required, the second bolt is unscrewed and the plug column is pulled so that it can leave the fixed block, so that the welding shaft head can be removed, and the friction additive process is carried out through the additive shaft head.

[0014] 2. Compared with the prior art, this spindle system capable of realizing friction additive manufacturing and friction stir welding is provided with a feeding device, which is conducive to automatically conveying material rods. By starting the adjusting motor to rotate the adjusting stud, and by adjusting the forward and reverse rotation of the stud, the fixed frame can drive the material rod in the fixed shell to move back and forth, and the material rod can be aligned with the guide cylinder through movement. The hydraulic device is controlled so that it can drive the fixed shell to loosen the material rod, and the material rod falls into the guide cylinder under the action of gravity. When the material rod is consumed to a certain extent, the feeding device is started again to move the material rod in another fixed shell to the guide cylinder and fall into it under the action of gravity, so that the material rod can be automatically conveyed. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the cross-sectional structure of the driving device of the present invention; Figure 3 It is a schematic diagram of the overall structure of the feeding device of the present invention; Figure 4 It is a schematic diagram of the cross-sectional structure of the extrusion device of the present invention; Figure 5 It is a schematic diagram of the cross-sectional structure of the main shaft and the welded shaft head of the present invention; Figure 6 It is a schematic diagram of the cross-sectional structure of the welding shaft head and the additive shaft head of the present invention.

[0016] Legend: 1. Driving device; 101. Shell; 102. Baffle; 103. Bracket; 104. Driving motor; 105. First gear; 2. Feeding device; 201. Slide rail; 202. Adjusting stud; 203. Fixing frame; 204. Hydraulic device; 205. Fixing shell; 206. Adjusting motor; 3. Material rod; 4. Extrusion device; 401. Extrusion motor; 402. Extrusion stud; 403. Lifting column; 404. Limiting cylinder; 405. Pressure plate; 406. Anti-slip pad; 5. Main shaft; 501. Shaft body; 502. Guide cylinder; 503. First bolt; 504. Additive shaft head; 5041. Additive head; 5042. Chip cutter; 5043. Fixed block; 5044. Stirring block; 5045. Screw groove; 505. Limit sleeve; 506. Second gear; 6. Welding shaft head; 601. Welding head; 602. Fixed cylinder; 6021. Cylinder body; 6022. Second bolt; 6023. Spring; 6024. Plug column. DETAILED DESCRIPTION

[0017] Reference Figure 1-6 The present invention provides a spindle system capable of realizing friction additive and friction stir welding: comprising a driving device 1, wherein a spindle 5 is movably connected inside the driving device 1, a welding shaft head 6 is placed outside the spindle 5, a feeding device 2 is fixedly connected to the top of the driving device 1, a material rod 3 is placed between the feeding devices 2, an extrusion device 4 is fixedly connected to the top of the driving device 1, the spindle 5 comprises a shaft body 501 movably connected inside the driving device 1, a guide cylinder 502 is movably connected inside the shaft body 501, an additive shaft head 504 is placed at the bottom of the shaft body 501, a first bolt 503 is threadedly connected to the connection between the shaft body 501 and the additive shaft head 504, and the outer side of the shaft body 501 is fixedly connected to the welding shaft head 6. A second gear 506 is fixedly connected, and a limiting sleeve 505 is fixedly connected above and below the second gear 506 on the outside of the shaft body 501. The upper part of the outer side of the guide cylinder 502 is fixedly connected to the driving device 1. The guide cylinder 502 is used to guide the material rod 3. The shaft body 501 and the guide cylinder 502 can rotate relatively. The first bolt 503 is used to fix the additive shaft head 504 to the bottom of the shaft body 501. The additive shaft head 504 is placed at the bottom of the shaft body 501, and the screw groove 5045 is aligned with the first bolt 503. The first bolt 503 is screwed so that it can enter the screw groove 5045, thereby fixing the additive shaft head 504 to the bottom of the shaft body 501.

[0018] Preferably, the driving device 1 includes a shell 101, baffles 102 are fixedly connected to both sides of the shell 101, a bracket 103 is fixedly connected to the rear side of the top of the shell 101, a driving motor 104 is fixedly connected to the rear side of the inside of the shell 101, and a first gear 105 is fixedly connected to the output end of the driving motor 104, the first gear 105 is meshed with the second gear 506, and the baffle 102 is used to limit the material rod 3 between the feeding device 2 to prevent it from escaping from the fixed shell 205, and the first gear 105 can be rotated by starting the driving motor 104, so that it can drive the second gear 506 to rotate. The second gear 506 rotates, thereby enabling the shaft body 501 to rotate, so that the additive shaft head 504 can drive the chip cutter 5042 inside it to rotate, and through the rotation, it can cut chips on the bottom of the material rod 3. The cut chips are in the squeeze space between the chip cutter 5042 and the additive head 5041, and will rotate together with the drive of the additive shaft head 504. As the chips continue to increase, they are squeezed and rubbed against each other, thereby causing them to continue to soften. After softening, they will diffuse outward and fall to the cladding interface, and the object will be additively manufactured through layer-by-layer accumulation.

[0019] Preferably, the feeding device 2 includes a slide rail 201 fixedly connected to the top of the housing 101, the front end of the slide rail 201 is fixedly connected to an adjusting motor 206, the output end of the adjusting motor 206 is fixedly connected to an adjusting stud 202, the outer side of the adjusting stud 202 is threadedly connected to a fixing frame 203, the left side of the fixing frame 203 is fixedly connected to a hydraulic device 204, the left side of the hydraulic device 204 is fixedly connected to a fixing shell 205, the slide rail 201 is slidably connected to the fixing frame 203, the fixing shell 205 is used to clamp the material rod 3, the adjusting motor 206 is started to rotate the adjusting stud 202, and the adjusting motor 206 is turned to rotate the adjusting stud 202. The forward and reverse rotation of the joint stud 202 enables the fixing frame 203 to drive the material rod 3 in the fixing shell 205 to move back and forth, so that the material rod 3 can be aligned with the guide cylinder 502 through the movement, and the hydraulic device 204 is controlled to drive the fixing shell 205 to loosen the material rod 3, and the material rod 3 falls into the guide cylinder 502 under the action of gravity, and then the material rod 3 is squeezed by the squeezing device 4. After the use of the material rod 3 is completed, the squeezing device 4 is returned to the original position, and then the material rod 3 in the fixing shell 205 is controlled to move to the guide cylinder 502 again, and it falls under the action of gravity, and the squeezing device 4 can be controlled to squeeze it again.

[0020] Preferably, the extrusion device 4 includes a limiting cylinder 404 fixedly connected to the inside of the bracket 103, the top of the limiting cylinder 404 is fixedly connected to the extrusion motor 401, the extrusion motor 401 is fixedly connected to the bracket 103, the output end of the extrusion motor 401 is fixedly connected to the extrusion stud 402, the outer side of the extrusion stud 402 is threadedly connected to the lifting column 403, the lifting column 403 is slidably connected to the limiting cylinder 404, the bottom end of the lifting column 403 is fixedly connected to the pressure plate 405, the bottom of the pressure plate 405 is fixedly connected to the anti-skid pad 406, and the outer side of the lifting column 403 is provided with a limiting groove, so that it can only be lifted and lowered inside the limiting cylinder 404, the extrusion stud 402 is rotated by starting the extrusion motor 401, and the lifting column 403 can be lifted and lowered inside the limiting cylinder 404 by forward and reverse rotation, the pressure plate 405 can squeeze the material rod 3 by lifting, and the material rod 3 will not rotate under the action of the anti-skid pad 406.

[0021] Preferably, the welding shaft head 6 includes a welding head 601 placed outside the additive shaft head 504, and both sides of the welding head 601 are fixedly connected with a fixed cylinder 602, and the fixed cylinder 602 includes a cylinder body 6021 fixedly connected to both sides of the welding head 601, and the cylinder body 6021 is movably connected with a plug column 6024 inside, and a spring 6023 is fixedly connected between the cylinder body 6021 and the plug column 6024, and the outer side of the cylinder body 6021 is threadedly connected with a second bolt 6022, and the plug column 6024 is pulled to both sides, so that the welding shaft head 6 can be placed on the additive shaft The outer side of the head 504 can be fitted with the outer side and the bottom of the additive shaft head 504. When the plug 6024 is loosened, the plug 6024 can be inserted into the fixed block 5043 under the action of the spring 6023, so that the welding shaft head 6 is fixed on the additive shaft head 504, and the second bolt 6022 is screwed so that it can be inserted into the plug 6024, so that the position of the plug 6024 is fixed to prevent it from moving due to the action of centrifugal force. The welding shaft head 6 is driven by the driving device 1 to rotate, so that it can perform the stir friction welding process.

[0022] Preferably, the additive shaft head 504 includes an additive head 5041 placed at the lower part of the shaft body 501, a chip cutter 5042 is fixedly connected to the inner side of the additive head 5041, fixed blocks 5043 are fixedly connected to both sides of the additive head 5041, a stirring block 5044 is fixedly connected to the bottom of the additive head 5041, a screw groove 5045 is provided on the outer side of the additive head 5041, the additive head 5041 and the chip cutter 5042 are provided with a space for squeezing and rubbing the debris of the material rod 3, and the stirring block 5044 is used to stir and rub the discharged debris of the material rod 3 to accelerate the softening efficiency.

[0023] Preferably, the diameter of the material rod 3 is slightly larger than the diameter of the inner side of the fixed shell 205, the diameter of the material rod 3 is the same as the diameter of the inner side of the guide cylinder 502, the top of the upper limit sleeve 505 on the outer side of the shaft body 501 is in contact with the driving device 1, and the lower part of the lower limit sleeve 505 on the outer side of the shaft body 501 is in contact with the driving device 1. The limit sleeve 505 is used to limit the shaft body 501 and ensure that it will not move up and down, thereby ensuring its stability during operation. By setting the inner diameter of the fixed shell 205 to be slightly smaller than the diameter of the material rod 3, it is ensured that the fixed shell 205 can clamp the material rod 3. By setting the inner diameter of the guide cylinder 502 to be the same as the diameter of the material rod 3, it is ensured that the material rod 3 will not tilt in the guide cylinder 502.

[0024] Preferably, the tops of the outer shell 101, the baffle 102 and the guide cylinder 502 are in the same plane, and there is no gap at the connection between the outer shell 101, the baffle 102 and the guide cylinder 502, ensuring that when the feeding device 2 drives the material rod 3 to move, the material rod 3 will not be blocked from moving due to the uneven tops of the outer shell 101, the baffle 102 and the guide cylinder 502, and their surfaces are smooth, which facilitates the movement of the material rod 3.

[0025] Working principle: When in use, the material rod 3 is aligned with the guide cylinder 502 through the feeding device 2, and enters the guide cylinder 502 under the action of gravity, and the pressing plate 405 is used to press the material rod 3 downward through the squeezing device 4, and the anti-slip pad 406 prevents it from rotating, and the pressing plate 405 continuously presses down so that the bottom of the material rod 3 fits with the chip cutter 5042, and the second gear 506 is rotated by starting the driving device 1, so that the shaft body 501 can rotate, so that the material axis The head 504 can drive the chip cutter 5042 inside it to rotate. By rotating and under the extrusion of the extrusion device 4, the chip cutter 5042 can cut chips from the bottom of the material rod 3. At the same time, the extrusion device 4 continuously presses down so that the bottom of the material rod 3 can always fit with the chip cutter 5042, so that the bottom of the material rod 3 can be continuously cut into chips by the chip cutter 5042. The cut chips are in the extrusion space between the chip cutter 5042 and the additive head 5041. As the additive shaft head 50 4 will rotate together with it, and as the debris continues to increase, they will squeeze and rub against each other, thereby causing it to soften continuously, and the softening efficiency will be accelerated under the stirring and friction of the stirring block 5044. After softening, it will diffuse outward and fall to the cladding interface, and the object will be additively manufactured through layer-by-layer accumulation. By pulling the plug 6024 to both sides, the welding shaft head 6 can be placed on the outside of the additive shaft head 504, and can fit with the outside and bottom of the additive shaft head 504. When the plug 6024 is loosened, the plug 6024 can be inserted into the fixing block 5043 under the action of the spring 6023, so that the welding shaft head 6 is fixed on the additive shaft head 504, and the second bolt 6022 is screwed so that it can be inserted into the plug 6024, so that the position of the plug 6024 is fixed to prevent it from moving due to the action of centrifugal force, and the welding shaft head 6 is driven by the driving device 1 to rotate, so that it can perform a stir friction welding process.

[0026] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A spindle system capable of achieving friction material addition and friction stir welding, comprising a drive device (1), characterized in that: The driving device (1) is movably connected to a main shaft (5) inside, a welded shaft head (6) is placed outside the main shaft (5), a feeding device (2) is fixedly connected to the top of the driving device (1), a material rod (3) is placed between the feeding devices (2), an extrusion device (4) is fixedly connected to the top inside the driving device (1), the main shaft (5) comprises a shaft body (501) movably connected to the inside of the driving device (1), a guide cylinder (502) is movably connected to the inside of the shaft body (501), an additive shaft head (504) is placed at the bottom of the shaft body (501), a first bolt (503) is threadedly connected to the connection between the shaft body (501) and the additive shaft head (504), a second gear (506) is fixedly connected to the outside of the shaft body (501), a limiting sleeve (505) is fixedly connected to the top and bottom of the second gear (506) on the outside of the shaft body (501), and the top of the outside of the guide cylinder (502) is fixedly connected to the driving device (1).

2. A spindle system capable of achieving friction material addition and friction stir welding according to claim 1, characterized in that: The driving device (1) comprises a housing (101), baffles (102) are fixedly connected to both sides of the housing (101), a bracket (103) is fixedly connected to the rear side of the top of the housing (101), a driving motor (104) is fixedly connected to the rear side inside the housing (101), and a first gear (105) is fixedly connected to the output end of the driving motor (104), and the first gear (105) is meshed with a second gear (506).

3. The spindle system capable of achieving friction material addition and friction stir welding according to claim 1, characterized in that: The feeding device (2) comprises a slide rail (201) fixedly connected to the top of the housing (101); the front end of the slide rail (201) is fixedly connected to an adjusting motor (206); the output end of the adjusting motor (206) is fixedly connected to an adjusting stud (202); the outer side of the adjusting stud (202) is threadedly connected to a fixing frame (203); the left side of the fixing frame (203) is fixedly connected to a hydraulic device (204); the left side of the hydraulic device (204) is fixedly connected to a fixing shell (205); and the slide rail (201) is slidably connected to the fixing frame (203).

4. The spindle system capable of achieving friction material addition and friction stir welding according to claim 1, characterized in that: The extrusion device (4) comprises a limiting cylinder (404) fixedly connected to the inside of the bracket (103); the top of the limiting cylinder (404) is fixedly connected to an extrusion motor (401); the extrusion motor (401) is fixedly connected to the bracket (103); the output end of the extrusion motor (401) is fixedly connected to an extrusion stud (402); the outer side of the extrusion stud (402) is threadedly connected to a lifting column (403); the lifting column (403) is slidably connected to the limiting cylinder (404); the bottom end of the lifting column (403) is fixedly connected to a pressure plate (405); and the bottom of the pressure plate (405) is fixedly connected to an anti-slip pad (406).

5. The spindle system capable of achieving friction material addition and friction stir welding according to claim 1, characterized in that: The welding shaft head (6) comprises a welding head (601) placed outside the additive shaft head (504), both sides of the welding head (601) are fixedly connected with a fixed cylinder (602), the fixed cylinder (602) comprises a cylinder body (6021) fixedly connected to both sides of the welding head (601), the cylinder body (6021) is movably connected with a plug post (6024) inside, a spring (6023) is fixedly connected between the cylinder body (6021) and the plug post (6024), and the outer side of the cylinder body (6021) is threadedly connected with a second bolt (6022).

6. The spindle system capable of achieving friction material addition and friction stir welding according to claim 1, characterized in that: The additive shaft head (504) comprises an additive head (5041) placed at the bottom of the shaft body (501); a chip cutter (5042) is fixedly connected to the inner side of the additive head (5041); fixed blocks (5043) are fixedly connected to both sides of the additive head (5041); a stirring block (5044) is fixedly connected to the bottom of the additive head (5041); and a screw groove (5045) is provided on the outer side of the additive head (5041).

7. The spindle system capable of achieving friction material addition and friction stir welding according to claim 1, characterized in that: The diameter of the material rod (3) is slightly larger than the diameter of the inner side of the fixed shell (205), and the diameter of the material rod (3) is the same as the diameter of the inner side of the guide cylinder (502). The top of the upper limit sleeve (505) on the outer side of the shaft body (501) fits with the driving device (1), and the bottom of the lower limit sleeve (505) on the outer side of the shaft body (501) fits with the driving device (1).

8. The spindle system capable of achieving friction material addition and friction stir welding according to claim 2, characterized in that: The tops of the housing (101), the baffle (102) and the guide cylinder (502) are located in the same plane.

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