Friction welding flash grinding tool and method

Abstract

The invention relates to the technical field of grinding equipment tools, in particular to a friction welding flash grinding tool and method. The polishing tool comprises a driving motor; the fixing shaft is arranged at one end of the driving motor, and the outer ring of the fixing shaft is sleeved with a first nut; the rotating shaft is connected to the fixed shaft, and the outer ring of the rotating shaft is sleeved with a second nut and a plurality of adjusting gaskets; a through hole is formed in the dust cover, and the fixing shaft is inserted into the through hole to be connected with the dust cover; the cutter head is clamped between the second nut and the adjusting gasket and located in the dustproof cover, and a plurality of protruding blocks are arranged at the bottom end of the cutter head; and the milling cutter blade is fixed on one side surface of the convex block. According to the friction welding flash grinding tool and method, the grinding quality is effectively improved, meanwhile, the grinding efficiency is improved, the grinding cost is reduced, and harm of grinding to operators is eliminated.

Description

Technical Field

[0001] The invention relates to the technical field of grinding equipment tools, and in particular to a friction welding flash grinding tool and method. Background Art

[0002] Friction stir welding is a welding method that uses the heat generated by the friction between the high-speed rotating welding tool and the workpiece to partially melt the welded material. When the welding tool moves forward along the welding interface, the plasticized material flows from the front to the back of the welding tool under the action of the rotating friction of the welding tool, and forms a dense solid phase weld under the extrusion of the welding tool. After friction stir welding, flash will be generated, which is an inherent characteristic of the process. Flash will affect the appearance of the product, interfere with assembly or cause other potential risks, and needs to be removed. The existing removal method is generally to manually use a general angle grinder loaded with a shutter blade for grinding and polishing, grinding the aluminum flash into aluminum dust to achieve flash removal.

[0003] Existing grinding tools have no vertical limit, and the grinding depth is only controlled manually, with poor consistency. Over-grinding or incomplete grinding often occurs, and the polished appearance is poor. In addition, severe over-grinding will cause the wall thickness of the material at the grinding location to be thinned, and even cause sealing failure, resulting in quality accidents. The removal method is that the louver blades grind the metal burrs into dust for removal. The grinding efficiency is low, and the louver blades are consumables and need to be replaced frequently, resulting in high grinding costs. The grinding process will generate a large amount of metal dust, and the grinding station environment is harsh, which seriously affects the health of the operator. Summary of the invention

[0004] In view of the above-mentioned shortcomings of the prior art, the purpose of the present invention is to provide a friction welding flash grinding tool and method, which effectively solves the problems of inconsistent grinding depth, low grinding efficiency and high cost in the existing grinding method.

[0005] The present invention first provides a friction welding flash grinding tool, the grinding tool comprising:

[0006] Drive motor;

[0007] A fixed shaft, arranged at one end of the driving motor, wherein an outer ring of the fixed shaft is sleeved with a first nut;

[0008] A rotating shaft connected to the fixed shaft, wherein an outer ring of the rotating shaft is provided with a second nut and a plurality of adjusting washers;

[0009] A dust cover, wherein a through hole is formed on the dust cover, and the fixed shaft is inserted into the through hole to connect with the dust cover;

[0010] A cutter disc is clamped between the second nut and the adjusting washer and is located in the dust cover, and a plurality of protrusions are arranged at the bottom end of the cutter disc;

[0011] and a milling blade, wherein the milling blade is fixed on one side of the protrusion.

[0012] More optimally, the rotating shaft is stepped, and the plurality of adjusting gaskets are arranged between the stepped surface and the cutter disc.

[0013] More optimally, grooves are provided at the four corners of the dust cover, bearings are provided in the grooves, and bearing pins are provided on the dust cover, and the bearing pins are connected to the bearings.

[0014] More optimally, the bearing pin is parallel to the width direction of the dust cover.

[0015] More optimally, the milling blade does not extend beyond the bottom of the dust cover, and the bottom of the bearing extends beyond the bottom of the dust cover.

[0016] More optimally, the milling blade forms an acute angle with the end face of the cutter disc.

[0017] Another aspect of the present invention provides a method for grinding flash of friction welding, comprising the following steps:

[0018] Perform preliminary cleaning around the weld;

[0019] Adjust the height of the cutter head by adding or removing the adjusting shims, turn on the drive motor, and apply the grinding tool evenly against the surface of the flash edge for grinding;

[0020] The grinding tool comprises:

[0021] Drive motor;

[0022] A fixed shaft, arranged at one end of the driving motor, wherein an outer ring of the fixed shaft is sleeved with a first nut;

[0023] A rotating shaft connected to the fixed shaft, wherein an outer ring of the rotating shaft is provided with a second nut and a plurality of adjusting washers;

[0024] A dust cover, wherein a through hole is formed on the dust cover, and the fixed shaft is inserted into the through hole to connect with the dust cover;

[0025] A cutter disc is clamped between the second nut and the adjusting washer and is located in the dust cover, and a plurality of protrusions are arranged at the bottom end of the cutter disc;

[0026] and a milling blade, wherein the milling blade is fixed on one side of the protrusion.

[0027] More optimally, the direction in which the cutter disc rotates is along the acute angle side between the milling blade and the end face of the cutter disc.

[0028] Compared with the prior art, the beneficial effects achieved by the present invention are:

[0029] (1) By designing an adjustment gasket on the grinding tool, the grinding depth is limited and the consistency of the grinding depth is maintained.

[0030] (2) The milling method with milling blades is used to replace the original louver blade grinding method, which greatly improves the grinding efficiency. The milling blade has a long service life and the cost of use is significantly lower than that of the louver blade, effectively reducing the overall grinding cost.

[0031] (3) There is basically no dust generated during the milling process, which greatly improves the grinding environment and eliminates harm to the health of operators.

[0032] (4) It has the advantages of easy operation, good grinding quality, high efficiency, low cost, and no harm to labor. It can achieve the final effect of green and efficient grinding process. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 An exploded view of a friction welding flash grinding tool according to the present invention;

[0034] Figure 2 A three-dimensional diagram of a friction welding flash grinding tool according to the present invention;

[0035] Figure 3 A cross-sectional view of a friction welding flash grinding tool according to the present invention;

[0036] Figure 4 It is a schematic diagram of the fixed axis and the rotating axis of the friction welding flash grinding tool of the present invention.

[0037] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0038] 1. Driving motor; 2. Fixed shaft; 3. Rotating shaft; 4. First nut; 5. Adjusting gasket; 6. Second nut; 7. Dust cover; 71. Through hole; 72. Bearing; 73. Bearing pin; 74. Groove; 8. Cutter disc; 81. Bump; 9. Milling blade. DETAILED DESCRIPTION

[0039] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] like Figure 1 As shown, the friction welding flash grinding tool includes a driving motor 1.

[0041] like Figure 1 and Figure 4As shown, the friction welding flash grinding tool includes a fixed shaft 2 and a rotating shaft 3, wherein the rotating shaft 3 is stepped. The fixed shaft 2 is arranged at one end of the driving motor 1, and the rotating shaft 3 is connected to the fixed shaft 2. The outer ring of the fixed shaft 2 is provided with a first nut 4, and the outer ring of the rotating shaft 3 is provided with a second nut 6. The outer ring of the rotating shaft 3 is provided with a plurality of adjusting washers 5, and the adjusting washers 5 are located between the first nut 4 and the second nut 6. The adjusting washers 5 can limit the grinding depth by increasing or decreasing to maintain the consistency of the grinding depth.

[0042] like Figure 1 As shown, the friction welding flash grinding tool includes a dust cover 7, which can prevent dust from flying out during the grinding process and affect the health of the workers. The dust cover 7 is provided with a through hole 71, and the fixed shaft 2 of the drive motor 1 is inserted into the through hole 71 to connect the dust cover 7. The four corners of the dust cover 7 are provided with grooves 74, and the grooves 74 are provided with bearings 72, and the bottom of the bearing 72 exceeds the bottom of the dust cover 7. The dust cover 7 is provided with a bearing pin 73, and the bearing pin 73 is connected to the bearing 72, and the bearing pin 73 is parallel to the width direction of the dust cover 7. The bearing 72 can roll in contact with the surface of the workpiece to reduce the forward resistance of grinding.

[0043] like Figure 1 As shown, the friction welding flash grinding tool includes a cutter disc 8, which is clamped between the second nut 6 and the adjusting washer 5 and is located in the dust cover 7. The bottom end of the cutter disc 8 is provided with a plurality of protrusions 81.

[0044] like Figure 1 As shown, the friction welding flash grinding tool includes a milling blade 9, which is fixed to one side of the protrusion 81 by bolts, and the milling blade 9 does not extend beyond the bottom of the dust cover 7, and the milling blade 9 forms an acute angle with the end face of the cutter head 8. The milling blade 9 has a long service life, which can effectively reduce the comprehensive grinding cost and improve the grinding efficiency.

[0045] Working principle of the present invention:

[0046] During the grinding process, the bearing 72 rolls in contact with the workpiece surface to reduce the forward resistance of grinding. The dust cover 7 and the bearing 72 provide grinding height limits to ensure grinding consistency and prevent flash from escaping and causing harm to the operator. By increasing or decreasing the adjusting gasket 5, the height of the cutter disc 8 is adjusted, and then the grinding depth is adjusted. The milling blade 9 is used to remove the flash and achieve a grinding effect. The rotational forward direction of the cutter disc 8 is set at the acute angle side of the milling blade 9 and the end face of the cutter disc 8.

[0047] The friction welding flash grinding method comprises:

[0048] 1. Perform preliminary cleaning around the weld, using tools such as a wire brush or sandpaper to gently remove rust, oil stains and other impurities around the weld.

[0049] 2. Adjust the height of the cutter disc 8 by increasing or decreasing the adjusting gasket 5, make the grinding tool contact the surface of the workpiece with the flash, maintain a moderate angle with the weld, turn on the drive motor 1, and apply uniform force to the grinding tool against the flash surface for grinding.

[0050] 3. During the grinding process, check the weld and surrounding areas regularly to ensure that all flash is evenly removed. If uneven grinding is found or new defects appear on the weld surface, adjust the angle and strength of the grinding tool in time.

[0051] 4. After grinding, carefully inspect the weld and surrounding area to ensure that all flash has been completely removed and the weld surface is smooth and free of defects.

[0052] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0053] Finally, it should be noted that the above description 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, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A friction welding flash grinding tool, characterized in that: The grinding tool comprises: Drive motor; A fixed shaft, arranged at one end of the driving motor, wherein an outer ring of the fixed shaft is sleeved with a first nut; A rotating shaft connected to the fixed shaft, wherein an outer ring of the rotating shaft is provided with a second nut and a plurality of adjusting washers; A dust cover, wherein a through hole is formed on the dust cover, and the fixed shaft is inserted into the through hole to connect with the dust cover; A cutter disc is clamped between the second nut and the adjusting washer and is located in the dust cover, and a plurality of protrusions are arranged at the bottom end of the cutter disc; and a milling blade, wherein the milling blade is fixed on one side of the protrusion.

2. The friction welding flash grinding tool according to claim 1, characterized in that: The rotating shaft is in a stepped shape, and the plurality of adjusting gaskets are arranged between the stepped surface and the cutter disc.

3. The friction welding flash grinding tool according to claim 1, characterized in that: The four corners of the dust cover are provided with grooves, bearings are arranged in the grooves, and bearing pins are arranged on the dust cover, and the bearing pins are connected to the bearings.

4. A friction welding flash grinding tool according to claim 3, characterized in that: The bearing pin is parallel to a width direction of the dust cover.

5. The friction welding flash grinding tool according to claim 1, characterized in that: The milling blade does not extend beyond the bottom of the dust cover, and the bottom of the bearing extends beyond the bottom of the dust cover.

6. The friction welding flash grinding tool according to claim 1, characterized in that: The milling blade forms an acute angle with the end surface of the cutter disc.

7. A method for grinding flash of friction welding, characterized in that: The polishing method comprises the following steps: Perform preliminary cleaning around the weld; Adjust the height of the cutter head by adding or removing the adjusting shims, turn on the drive motor, and apply the grinding tool evenly against the surface of the flash edge for grinding; The grinding tool comprises: Drive motor; A fixed shaft, arranged at one end of the driving motor, wherein an outer ring of the fixed shaft is sleeved with a first nut; A rotating shaft connected to the fixed shaft, wherein an outer ring of the rotating shaft is provided with a second nut and a plurality of adjusting washers; A dust cover, wherein a through hole is formed on the dust cover, and the fixed shaft is inserted into the through hole to connect with the dust cover; A cutter disc is clamped between the second nut and the adjusting washer and is located in the dust cover, and a plurality of protrusions are arranged at the bottom end of the cutter disc; and a milling blade, wherein the milling blade is fixed on one side of the protrusion.

8. The grinding method according to claim 7, characterized in that: The direction in which the cutter disc rotates is along the acute angle side between the milling blade and the end face of the cutter disc.

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