Polishing tool for small-diameter welding wire

Abstract

The utility model provides a polishing tool for a small-diameter welding wire, which is mounted on a protective plate bracket of a grinding machine, the grinding machine is provided with a grinding wheel with the outer circumferential surface as a working surface, and the polishing tool comprises a telescopic rod, a tool fixing piece, a grinding block, a stress application rod and a rotating part, the telescopic rod is hinged to the protection plate support through the tool fixing piece. The grinding block is connected to the other end of the telescopic rod, a groove parallel to the central axis of the grinding wheel is formed in the side, close to the grinding wheel, of the grinding block, the bottom of the groove is a semicircle with the diameter equal to the target diameter of the welding wire, the depth of the groove is equal to the target diameter of the welding wire, and the groove limits the welding wire to be located between the groove and the working face of the grinding wheel. The stress application rod is vertically and fixedly connected to the telescopic rod; the output end of the rotating component is connected with one end of a welding wire. The utility model provides a simple polishing tool which is convenient and quick and simple to operate, and effectively solves the problems that the manual polishing efficiency of the welding wire is low, the molded surface of the polished welding wire is irregular, the welding wire is broken in the polishing process and the like.

Description

Technical Field

[0001] This utility model belongs to the field of welding wire grinding technology, specifically relating to a grinding tool for small-diameter welding wire. Background Technology

[0002] When repairing aviation products, some require the use of custom-made welding wire. This type of welding wire is cast from powder into filaments, and its specifications are all larger than [specifications missing]. However, repairs must be carried out according to the product characteristics and the specific fault condition. The following specifications of welding wire are used for welding; therefore, it is necessary to [do something] during the repair process. The above welding wire was ground to the following.

[0003] Currently, this type of welding wire is ground manually. The wire is first cut to approximately 200mm in length, and then the operator holds one end and grinds it on a grinding wheel. During grinding, the operator needs to continuously rotate the wire with their fingers and apply pressure. This method is very time-consuming, and because the pressure and rotation speed vary, the resulting welding wire is uneven in thickness, and in severe cases, it may break. Uneven wire size leads to uneven weld formation, seriously affecting the quality of product repair.

[0004] Currently, the industry commonly uses centerless grinding technology. Its technical principle is as follows: the welding wire workpiece is placed on a guide wheel, and the guide wheel, in conjunction with the grinding wheels on both sides, drives the workpiece in a circumferential feed motion through the low-speed, co-rotating guide wheel, thereby achieving surface grinding. However, existing centerless grinders are mainly designed for fine polishing of workpiece surfaces. Their grinding wheel configuration and guide wheel feed mode can only achieve micron-level dimensional accuracy grinding, which cannot meet the millimeter-level (mm) deep material removal requirements in special scenarios of welding processes. When the welding wire needs to undergo large-scale shaping, limitations in equipment structure and processing mechanism can easily lead to inaccurate grinding amount control or even workpiece breakage.

[0005] Utility model patent CN206029596U discloses a portable, rotatable welding wire grinding positioning device, including a fixing device and a rotating device. A power source is installed inside the fixing device to power the rotating device. The fixing device has a wire-threading hole through which the welding wire passes and remains on the rotating positioning block of the rotating device. The grinding principle of this device is to limit the size of the wire-threading hole, and as the welding wire passes through the hole, the oxide film and burrs on the surface of the welding wire are removed by compression. However, this grinding method can only achieve surface grinding of the welding wire and cannot achieve millimeter-level grinding.

[0006] In summary, neither centerless grinders nor the devices designed in the aforementioned utility model patents can achieve millimeter-level precision grinding. This custom welding wire can currently only be ground manually, but it is inefficient and uneven pressure leads to dimensional fluctuations or breakage, resulting in a low finished product qualification rate. Utility Model Content

[0007] The purpose of this invention is to solve the problems of low efficiency, irregular grinding surface, and easy breakage that occur when manually grinding millimeter-sized welding wires, and to provide a grinding fixture for small-diameter welding wires.

[0008] To achieve the above objectives, the technical solution provided by this utility model is as follows:

[0009] A grinding fixture for small-diameter welding wire is provided, which is installed on the protective plate bracket of a grinding wheel machine. The grinding wheel machine has a grinding wheel with its outer circumferential surface as the working surface. The grinding fixture includes a telescopic rod, a fixture fixing part, a grinding block, a force-applying rod, and a rotating component. The fixture fixing part is fixedly connected to one end of the telescopic rod, and the telescopic rod is hinged to the protective plate bracket through the fixture fixing part. The grinding block includes a working part and a connecting part that are integrated together. The grinding block is connected to the other end of the telescopic rod through the connecting part. The working part has a groove parallel to the central axis of the grinding wheel on the side near the grinding wheel. The bottom of the groove is a semi-circle with a diameter equal to the target diameter of the welding wire, and the depth of the groove is equal to the target diameter of the welding wire. The groove restricts the welding wire to be located between the groove and the working surface of the grinding wheel. The force-applying rod is vertically fixedly connected to the telescopic rod. The output end of the rotating component is used to connect one end of the welding wire.

[0010] Furthermore, the protective plate bracket has hinge holes; the tooling fastener is a tubular structure, and the tooling fastener is hinged to the protective plate bracket through a hinge shaft.

[0011] Furthermore, the grinding block is T-shaped, including a web and flanges connected to both sides of one end of the web. The grinding block is connected to the telescopic rod through the web, and the groove is located on the side of the flange away from the web.

[0012] Furthermore, the groove is a U-shaped groove, including a rectangular groove and a semi-circular groove connected to the rectangular groove. The diameter of the semi-circular groove is equal to the target diameter of the welding wire, and the depth of the U-shaped groove is equal to the target diameter of the welding wire.

[0013] Furthermore, the telescopic rod includes a fixing pin, a small-diameter tube, and a large-diameter tube sleeved on the outside of the small-diameter tube; the small-diameter tube has multiple first through holes along its length, and the large-diameter tube has a second through hole; the second through hole of the large-diameter tube can be selectively inserted and connected to any one of the first through holes of the small-diameter tube through the fixing pin to adjust the length of the telescopic rod.

[0014] Furthermore, the spacing between adjacent first through holes on the small-diameter tube is 1.0 to 2.0 mm.

[0015] Furthermore, the extension rod extends in a direction away from the grinding wheel.

[0016] Furthermore, the grinding fixture also includes a protective plate fixing tube, which is fixedly connected to one end of the telescopic rod connecting fixture fixing component.

[0017] The advantages of this utility model are:

[0018] This invention provides a convenient, quick, and easy-to-operate simple grinding fixture. Relying on the cooperation of the grinding block and the grinding wheel of the grinding machine, the welding wire is always kept between the working surfaces of the grinding block and the grinding wheel. A rotating component drives the rotation of the welding wire, effectively solving the problem of low efficiency in manual welding wire grinding. The groove size is designed to be the target size of the welding wire after grinding, allowing operators to better control the grinding process and solving problems such as irregular welding wire surface after grinding and welding wire breakage during grinding. At the same time, it ensures personnel safety during welding wire grinding and fills the technical gap in grinding small-diameter welding wires. Attached Figure Description

[0019] The features and advantages of this invention will become more readily understood from the following description with reference to the accompanying drawings, which are not drawn to scale and some features are enlarged or reduced to show details of specific parts.

[0020] Figure 1 This is a schematic diagram of the mechanism of the grinding fixture of this utility model;

[0021] Figure 2 This is a side view of the grinding fixture of this utility model;

[0022] Figure 3 This is a schematic diagram showing the positional relationship between the grinding fixture and the grinding wheel of this utility model;

[0023] Figure 4 This is a structural schematic diagram of the large-diameter pipe of this utility model;

[0024] Figure 5 This is a schematic diagram of the structure of the small-diameter tube of this utility model;

[0025] Figure 6 This is a schematic diagram of the module structure of this utility model;

[0026] Figure 7 This is a schematic diagram showing the positional relationship between the welding wire and the groove before processing.

[0027] Figure 8 This is a schematic diagram showing the positional relationship between the welding wire and the groove after the welding wire of this utility model has been processed;

[0028] In the diagram: 1-protective plate bracket; 2-grinding wheel; 3-telescopic rod; 31-large diameter pipe; 32-small diameter pipe; 4-force bar; 5-grinding block; 51-groove; 6-tooling fixture; 7-protective plate fixing pipe. Detailed Implementation

[0029] The present invention will now be described in detail with reference to the accompanying drawings and exemplary embodiments thereof. It should be noted that the following detailed description of the present invention is for illustrative purposes only and is not intended to limit the scope of the invention.

[0030] like Figure 3 As shown, a grinding fixture for small-diameter welding wire is mounted on the protective plate bracket 1 of a grinding wheel machine. The grinding wheel machine has a grinding wheel 2 with its outer circumferential surface as the working surface, as shown in the figure. Figure 1 As shown, the grinding fixture includes a telescopic rod 3, a fixture fixing part 6, a grinding block 5, a force-applying rod 4, and a rotating part.

[0031] like Figure 1 , 2 As shown, the tooling fastener 6 is fixedly connected to one end of the telescopic rod 3, and the telescopic rod 3 is hinged to the protective plate bracket 1 through the tooling fastener 6; as Figure 1 , 5 As shown, the grinding block 5 includes a working part and a connecting part that are integrated together. The grinding block 5 is connected to the other end of the telescopic rod 3 through the connecting part. The working part has a groove 51 parallel to the central axis of the grinding wheel 2 on the side near the grinding wheel 2. The bottom of the groove 51 is a semi-circle with a diameter equal to the target diameter of the welding wire, and the depth of the groove 51 is equal to the target diameter of the welding wire. The groove 51 restricts the welding wire to be located between the groove 51 and the working surface of the grinding wheel 2. The force-applying rod 4 is vertically fixedly connected to the telescopic rod 3. The output end of the rotating component is used to connect one end of the welding wire. In this embodiment, the rotating component is an electric drill.

[0032] like Figure 3 As shown, during use, first remove the protective plate from the grinding wheel 2 machine, hinge the protective plate fixing tube 7 to the protective plate bracket 1, press the force lever 4 to bring the grinding block 5 closer to the grinding wheel 2, and clamp one end of the welding wire onto the electric drill, as shown. Figure 7 As shown, the welding wire is horizontally confined between the groove 51 and the working surface of the grinding wheel 2. The telescopic rod 3 is adjusted so that the grinding block 5 is tangent to the grinding wheel 2, ensuring that the working surface of the tooling is tangent to the grinding wheel 2. The electric drill speed is adjusted to the lowest setting. By holding the electric drill with the right hand and pressing the force lever 4 with the left hand, the two hands coordinate to perform a cyclical pulling motion, as shown. Figure 8 As shown, the welding wire is ground until it enters the groove 51, and then ground until the grinding block 5 is about to contact the grinding wheel 2. The grinding of the welding wire is then completed. After the grinding is finished, the grinding fixture is removed and the protective plate is installed, so that the grinding machine can be restored to its original state.

[0033] This embodiment provides a convenient, quick, and easy-to-operate simple grinding fixture, effectively solving the problems of low efficiency, irregular wire profile after grinding, and wire breakage during the grinding process in manual grinding of welding wire. It ensures personnel safety during the grinding process and fills a technological gap in grinding small-diameter welding wires. In traditional manual grinding, the inability to effectively clamp the wire can cause it to be knocked away during grinding. With the grinding fixture designed in this embodiment, the fixture is rotatably connected to the grinding wheel 2 machine. The grinding fixture and grinding wheel 2 machine work together to confine the welding wire to be ground between the groove 51 and the working surface of the grinding wheel 2. This mutual cooperation allows for convenient operation by the worker and protects the welding wire from falling off or being knocked away. The groove 51 is designed to be the target size for grinding, which allows the operator to quickly and effectively judge the grinding status of the welding wire based on the entry of the welding wire into the groove 51 and the distance between the grinding block 5 and the working surface of the grinding wheel 2. No other auxiliary tools are needed for measurement, which improves the grinding effect and efficiency. At the same time, this grinding fixture provides a new approach to grinding small-diameter products and can be applied to the grinding and repair of other small products.

[0034] like Figure 1 , 2 As shown, the protective plate bracket 1 has a hinge hole, and the tooling fastener 6 is a tubular structure made of stainless steel. The tooling fastener 6 is hinged to the protective plate bracket 1 via a hinge shaft. The length of the tooling fastener tube is 30.0–50.0 mm, and the diameter is…

[0035] like Figure 5 As shown, the grinding block 5 is T-shaped, including a web and flanges connected to both sides of one end of the web. The grinding block 5 is connected to the telescopic rod 3 through the web, and the groove 51 is located on the side of the flange away from the web. The material is carbon steel, which is wear-resistant. During grinding, the operator observes the grinding process from the side to avoid prolonged contact between the grinding wheel 2 and the working surface, which could affect the grinding accuracy.

[0036] like Figure 6 , 7 As shown in Figure 8, the groove 51 is a U-shaped groove, including a rectangular groove and a semi-circular groove connected to the rectangular groove. The diameter of the semi-circular groove is equal to the target diameter of the welding wire, and the depth of the U-shaped groove is equal to the target diameter of the welding wire. By limiting the grinding diameter of the welding wire by the U-shaped groove, standard grinding of the welding wire can be completed without the need for additional measuring tools.

[0037] like Figure 4 , 5As shown, the telescopic rod 3 includes a fixing pin, a small-diameter tube 32, and a large-diameter tube 31 sleeved outside the small-diameter tube 32. The small-diameter tube 32 has multiple first through holes along its length, and the large-diameter tube 31 has one second through hole. The second through hole of the large-diameter tube 31 can be selectively inserted into and connected to any one of the first through holes of the small-diameter tube 32 via the fixing pin to adjust the length of the telescopic rod 3. There are 10 to 15 first through holes, spaced 1.0 to 2.0 mm apart.

[0038] like Figure 3 As shown, the force bar 4 extends in the direction away from the grinding wheel 2. The force bar 4 can exert force more effectively to make the grinding block 5 push the welding wire closer to the grinding wheel 2 for grinding.

[0039] The grinding fixture also includes a protective plate fixing tube 7, made of stainless steel, which is fixedly connected to one end of the telescopic rod 3 connecting to the fixture fixing part 6. In use, the protective plate removed from the grinding wheel 2 is installed onto the fixture protective plate fixing tube 7. The protective plate fixing tube 7 has a length of 10.0–30.0 mm and a diameter of [missing information].

[0040]

[0041] In this embodiment, the tooling fixing tube has a length of 30.0 mm and a diameter of [missing information]. The length of the protective plate fixing tube 7 is 10.0 mm, and the diameter is... The diameter of the small-diameter pipe 32 is... Large diameter pipe 31 has a diameter of The specifications for both the first and second through holes are... The first series of through holes consists of 10 holes. The target diameter for grinding the welding wire is... The diameter of the semi-circular groove in groove 51 is The rectangular groove 51 has a length of 1.0 mm, a width of 0.5 mm, and a depth of [missing information]. The tooling designed in this embodiment can effectively handle a diameter of... The welding wire was ground to The welding wire is ground to the millimeter level with uniform size. This grinding tool makes grinding more efficient, safer and less labor-intensive. The grinding speed is 5 times faster than manual grinding. The ground welding wire is of high quality and uniform size. The operation is simple, convenient and saves time and effort.

[0042] Finally, it should be noted that the features mentioned and / or shown in the above description of exemplary embodiments of the present invention can be combined in the same or similar manner with one or more other embodiments, combined with features in other embodiments, or substituted for corresponding features in other embodiments. These combined or substituted technical solutions should also be considered as included within the protection scope of the present invention.

Claims

1. A grinding tool for small diameter welding wire, which is installed on a guard plate support (1) of a grinder having a grinding wheel (2) with an outer circumferential surface as a working surface, characterized in that, The polishing fixture includes: Telescopic pole (3); The tooling fastener (6) is fixedly connected to one end of the telescopic rod (3), and the telescopic rod (3) is hinged to the protective plate bracket (1) through the tooling fastener (6); The grinding block (5) includes a working part and a connecting part that are integrated together. The grinding block (5) is connected to the other end of the telescopic rod (3) through the connecting part. The working part has a groove (51) on the side near the grinding wheel (2) that is parallel to the central axis of the grinding wheel (2). The bottom of the groove (51) is a semi-circle with a diameter equal to the target diameter of the welding wire, and the depth of the groove (51) is equal to the target diameter of the welding wire. The groove (51) restricts the welding wire to be located between the groove (51) and the working surface of the grinding wheel (2). The extension rod (4) is vertically fixed to the telescopic rod (3); And a rotating component, the output end of which is used to connect one end of the welding wire.

2. The polishing tool of claim 1, wherein, The protective plate bracket (1) has a hinge hole; the tooling fastener (6) is a tubular structure, and the tooling fastener (6) is hinged to the protective plate bracket (1) through a hinge shaft.

3. The polishing tool of claim 1, wherein, The grinding block (5) is T-shaped and includes a web and flanges connected to both sides of one end of the web. The grinding block (5) is connected to the telescopic rod (3) through the web. The groove (51) is located on the side of the flange away from the web.

4. The polishing tool of claim 1, wherein, The groove (51) is a U-shaped groove, including a rectangular groove and a semi-circular groove communicating with the rectangular groove. The diameter of the semi-circular groove is equal to the target diameter of the welding wire, and the depth of the U-shaped groove is equal to the target diameter of the welding wire.

5. The polishing tool of claim 1, wherein, The telescopic rod (3) includes a fixing pin, a small-diameter tube (32), and a large-diameter tube (31) sleeved on the outside of the small-diameter tube (32). The small-diameter tube (32) has a plurality of first through holes along its length direction, and the large-diameter tube (31) has a second through hole. The second through hole of the large-diameter tube (31) can be selectively inserted and connected to any one of the first through holes of the small-diameter tube (32) through a fixing pin to adjust the length of the telescopic rod (3).

6. The polishing tool of claim 5, wherein, The interval between adjacent first through holes on the small diameter tube (32) is 1.0 to 2.0 mm.

7. The polishing tool of claim 1, wherein, The force bar (4) extends in a direction away from the grinding wheel (2).

8. The polishing tool of claim 1, wherein, The grinding fixture also includes a protective plate fixing tube (7), which is fixedly connected to one end of the telescopic rod (3) that connects to the fixture fixing part (6).

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