CN212144656U - Water-cooled wall tube panel fillet weld reinforcement removing device - Google Patents

Abstract

A device for removing the weld reinforcement of a water wall tube panel fillet is disclosed. The tube panel in the prior art is placed on a gantry milling machine, the length direction has large deflection, great difficulty is caused in removing the residual height of the fillet weld of the tube panel of the water-cooled wall, and more problems can be caused by the hidden danger of breakage caused by touching welding defects in the processing process by using a ball end milling cutter. The utility model discloses the constitution includes: 4 locating plates (1), 4 locating plates divide into 2 and are a set of parallel arrangement, wherein 2 locating plate top welding of parallel arrangement have fixture block (2), locating plate lower part circular arc and water wall pipe (5) laminating, be connected with band steel (6) and through welded fastening between 2 water wall pipes, the milling head is located 2 water wall pipe intermediate positions, the head of its milling head (8) is 2 convex blades, the laminating of blade lower part and welding seam (7) top, the milling head top is connected with handle of a knife (3), the handle of a knife passes through the screw thread and is connected with main shaft (4). The utility model is used for water-cooled wall tube panel fillet weld surplus height remove device.

Description

Water-cooled wall tube panel fillet weld reinforcement removing device

The technical field is as follows:

the utility model relates to a water-cooled wall tube panel fillet weld surplus height remove device.

Background art:

the quality and the service life of the whole heating surface are directly influenced by the weld surface forming of the heating surface of the boiler, if the weld fails, huge potential safety hazards are generated, and immeasurable economic loss is caused, so that the weld surface forming method is used as a post-treatment process of the heating surface of the tube panel of the water wall, the removal of the fillet weld must be highly emphasized, and a reasonable and efficient processing technology must be adopted; the product structure is that two pipes with the same diameter are connected with flat steel, one pipe with 5 pipes is connected when in a processing state, the total length of the pipes is about 9 meters, a conventional pipe panel is placed on a gantry milling machine, the axis of the pipe is parallel to the X-axis direction of equipment, a pressing plate is fixed, the pipe and the flat steel are made of stainless steel, but the straightness and the surface quality are general, and the length direction has larger deflection, so that great difficulty is caused in removing the residual height of the angle welding line of the water-cooled wall pipe panel; according to a conventional processing scheme, a ball end mill is selected for processing, the processing period of the single weld reinforcement is about 30min, continuous processing time for thousands of tube panels can last for years, the manufacturing period of the whole product is greatly influenced, and a weaker cutter part in processing can cause more problems due to the hidden danger of breakage caused by touching welding defects.

The utility model has the following contents:

the utility model aims at providing a water-cooled wall tube panel fillet weld surplus height remove device.

The above purpose is realized by the following technical scheme:

the utility model provides a water-cooled wall tube panel fillet weld reinforcement remove device which constitutes and includes: 4 locating plates, 4 the locating plate divide into 2 and be a set of parallel arrangement, wherein 2 locating plate top welding of parallel arrangement have a fixture block, locating plate lower part circular arc and the laminating of water wall pipe, 2 the water wall pipe between be connected with the band steel and through welded fastening, the milling head is located 2 water wall pipe intermediate positions, the head of its milling head is 2 convex blades, the laminating of blade lower part and welding seam top, the milling head top be connected with the handle of a knife, the handle of a knife pass through the screw thread and be connected with the main shaft.

The device for removing the weld reinforcement of the water-cooled wall tube panel fillet is characterized in that a main shaft is connected with a flat milling machine through a spline, a milling head and a cutting blade are of an embedded structure, and the cutting blade is made of hard alloy.

Has the advantages that:

1. the utility model relates to a water-cooled wall tube panel fillet weld surplus height remove device, this structure adopts 4 locating plates to fall into 2 and is a set of parallel arrangement, constitute 2 slider structural style, can reduce area of contact, reduce frictional force during the removal, the water-cooled wall pipe has been solved because the overlength, length direction has great amount of deflection, get rid of the problem that has very big difficulty to water-cooled wall tube panel fillet weld surplus height, adopt 4 locating plates can play the effect of location direction, be convenient for get rid of the surplus height of tube panel fillet weld, can avoid the too big problem of frictional force again, the conventional processing mode of the more ordinary equipment of machining efficiency of this knot has promoted tens of times.

The utility model discloses a distance between the locating plate can carry out actual laying-out accounting according to pipe size and band steel size, guarantees to add in man-hour milling cutter and is located in the middle of two pipes to can satisfy the surplus high requirement of getting rid of welding seam, the while is unilateral to stay about 0.5mm surplus, avoids the fish tail pipe, and this structure range of application is wider, is fit for the water wall pipe of different diameters.

The utility model discloses a milling cutter head and cutting blade adopt mosaic structure, are convenient for change the cutting blade, consider the processing degree of difficulty of stainless steel fillet weld simultaneously, select carbide as the material of cutting blade, this is because hardness, toughness and the heat conductivity of carbide blade all are greater than the blade of ordinary high-speed steel material, have overcome in the processing comparatively weak cutter part probably because touch welding defect and have the hidden danger that collapses garrulous and cause more problems.

The utility model discloses a structure be located 2 water wall pipe intermediate positions with the milling cutter head, and its milling cutter head's head is 2 convex blades, carries out the headroom to 2 welding seams of band steel homonymy simultaneously and gets rid of, has improved machining efficiency, has saved operating time, has overcome the disadvantage that traditional welding seam headroom gets rid of the cycle length.

Description of the drawings:

fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic view of a connection structure of the positioning plate and the clamping block in fig. 1.

FIG. 3 is a schematic view of the connection structure of the spindle, the tool holder and the milling head shown in FIG. 1.

The specific implementation mode is as follows:

example 1:

the utility model provides a water-cooled wall tube panel fillet weld reinforcement remove device which constitutes and includes: 4 locating plates 1, 4 the locating plate divide into 2 and be a set of parallel arrangement, wherein 2 locating plate top welding of parallel arrangement have fixture block 2, locating plate lower part circular arc and 5 laminating of water wall pipe, 2 the water wall pipe between be connected with band steel 6 and through welded fastening, milling head 8 is located 2 water wall pipe intermediate positions, its milling head's head is 2 convex blades, the laminating of blade lower part and 7 tops of welding seam, milling head top be connected with handle of a knife 3, the handle of a knife pass through the screw thread and be connected with main shaft 4.

Example 2:

according to the device for removing the weld reinforcement of the water wall tube panel fillet of the embodiment 1, the main shaft is connected with the milling flat machine through a spline, the milling head and the cutting blade are of an embedded structure, and the cutting blade is made of hard alloy.

The device for removing the weld reinforcement of the water wall tube panel fillet is modified by adopting a standard-type pressure vessel barrel longitudinal annular seam milling machine; the four base plates are changed into positioning plates, a milling cutter is positioned between the two pipes during machining, a milling cutter head is changed into a small-size vertical milling and profiling milling cutter, a welding seam is machined, a margin of about 0.5mm is left on one side, and the pipes are prevented from being scratched; the original milling cutter shaft is special for milling flat, has large size, can not be replaced by a cutter head, needs to be modified into a special milling cutter shaft for repairing a welding line, and can be replaced by a blade and the cutter head so as to reduce the total cost; the device can be suitable for various products, and can be used for sealing heads of containers, residual weld scars of lacing wires on cylinder bodies, horse feet and residual weld joints; compared with a grinding machine, the grinding machine has higher production efficiency;

in the design of the non-standard cutter, the characteristics of the structure of the workpiece and the machined area are the first factor, the output capacity of equipment and the clamping mode of the cutter are the second factor, in addition, the universality and the economy are also factors needing to be considered, and from the factors, the design structures of the corresponding cutters are as follows:

1. selection of cutting inserts: due to the adoption of the design idea of the non-standard milling cutter, the rotation diameter and the cutting width of the cutting edge of the cutter need to be consistent with the size and the shape of a gap between a pipe to be processed and flat steel, so that the end part of the non-standard cutter is designed into a cylindrical structure, and the cutting edge is embedded as a main actuating mechanism;

in the aspect of selecting the material of the blade, considering the processing difficulty of the stainless steel fillet weld, the hard alloy is selected as the material of the cutting blade, because the hardness, the toughness and the thermal conductivity of the hard alloy blade are all larger than those of the blade made of common high-speed steel;

besides the material of the blade, a grooving blade with a positive rake angle is selected, so that the blade has enough allowance in the aspects of rigidity and chip control when a stainless steel welding seam is machined;

2. designing a clamping block: the four backing plates are changed into positioning plates which are designed into a sliding block structure and clamped on two adjacent pipes, wherein the sizes of the pipes are phi 51 multiplied by 10.5 and flat steel □ 5 multiplied by 19; the arc at the lower part of the positioning plate is matched with the pipe, the distance between the positioning plates is subjected to actual lofting check calculation according to the size of the pipe and the size of the flat steel, a milling cutter is positioned between the two pipes during processing, and the requirement for removing the extra height of a welding line can be met; meanwhile, the single side is left with a margin of about 0.5mm, so that the pipe is prevented from being scratched;

3. cutter body, handle of a knife structural design: according to the characteristics of equipment, the structure of a machine tool spindle is referred to, and a universal straight shank threaded connection structure is selected. The main shaft of the original equipment is taken down and modified to be combined with a standard replaceable blade type end mill to form a new equipment cutter handle which is matched with a fixture block structure to completely meet various requirements for removing the excess height of the fillet weld of the tube panel fin;

4. the universal design standard is adopted, so that the designed tube panel fin fillet weld is smooth to manufacture, the tool does not need to be debugged according to the design idea of a special tool, the tube panel fin fillet weld can be used after being assembled and installed by adopting screws, the tool is provided with an adjusting mechanism of the processing depth, and the removal of the tube panel fin fillet weld under various working conditions and various welding errors can be met directly according to a depth adjusting device on equipment;

5. the method has the advantages that mature standard handheld equipment is selected, the modified clamping block and the special non-standard cutter are matched, a high-rotating-speed low-feeding mode is adopted, complex adjustment and professional machine tool operators are not needed in the machining process, and under the condition that machining quality is the same, machining efficiency is improved by tens of times compared with a conventional machining mode of common equipment.

Claims (2)

1. The utility model provides a water-cooled wall tube panel fillet weld reinforcement remove device which constitutes and includes: 4 locating plates, characterized by: 4 the locating plate divide into 2 and be a set of parallel arrangement, wherein 2 locating plate top welding of parallel arrangement have a fixture block, locating plate lower part circular arc and the laminating of water-cooling wall pipe, 2 the water-cooling wall pipe between be connected with the band steel and through welded fastening, the milling head is located 2 water-cooling wall pipe intermediate positions, the head of its milling head is 2 convex blades, the laminating of blade lower part and welding seam top, the milling head top be connected with the handle of a knife, the handle of a knife pass through the screw and be connected with the main shaft.

2. The water-cooled wall tube panel fillet weld reinforcement removing device of claim 1, which is characterized in that: the main shaft is connected with the flat milling machine through a spline, the milling head and the cutting blade are of an embedded structure, and the cutting blade is made of hard alloy.

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