Simple hole milling device for large pipe fitting

Abstract

The utility model relates to the technical field of metal processing, and discloses a simple hole milling device for a large pipe fitting, which comprises a bottom frame, and a hole milling mechanism and a pipe fitting positioning mechanism are arranged on the bottom frame; the hole milling mechanism comprises a boring and milling power head capable of moving left and right, and a milling cutter is fixed to the output end of the boring and milling power head. The pipe fitting positioning mechanism comprises two V-shaped supports arranged left and right, the V-shaped supports are fixed to the bottom frame, a positioning baffle is fixed to the V-shaped support close to the hole milling mechanism, and flanges at the two ends of the pipe fitting are erected on the two V-shaped supports respectively. A large pipe fitting can be simply clamped and positioned through the pipe fitting positioning mechanism, a hole can be conveniently milled in a pipe fitting flange through the movable boring and milling power head, and the problems that in the prior art, hole milling in a large pipe fitting flange is high in cost, low in efficiency and the like are solved. Meanwhile, the device is simple in structure, convenient to operate and low in manufacturing cost.

Description

Technical Field

[0001] The utility model relates to the technical field of metal processing, in particular to a simple hole milling device for large pipe fittings. Background Art

[0002] A large pipe fitting as attached to the instruction manual Figure 7 The above-mentioned pipe includes a long tube, flanges 91 fixed at both ends of the long tube, and the flanges are formed with assembly holes 92, sealing grooves 93 and disassembly holes communicating with the sealing grooves. The disassembly holes are for facilitating the disassembly of the sealing ring placed in the sealing grooves. When processing the disassembly holes of existing large pipe fittings, the company generally asks other companies to process them, but the processing generally requires a large processing center to complete the milling work, which has a high processing cost, and the transportation cost is high and the efficiency is low. Utility Model Content

[0003] The purpose of the utility model is to provide a simple hole milling device for large pipe fittings, which can simply clamp and position the large pipe fittings through a pipe fitting positioning mechanism, and can conveniently mill holes on the pipe fitting flanges through a movable boring and milling power head, thereby solving the problems of high cost and low efficiency of hole milling on existing large pipe fitting flanges; at the same time, it has a simple structure, is easy to operate, and has a low cost.

[0004] The above technical objectives of the utility model are achieved through the following technical solutions:

[0005] A simple milling device for large pipe fittings comprises a base frame, on which a milling mechanism and a pipe fitting positioning mechanism are arranged; the milling mechanism comprises a boring and milling power head which can move left and right, and a milling cutter is fixed at the output end of the boring and milling power head;

[0006] The pipe positioning mechanism comprises two V-shaped brackets arranged on the left and right, the V-shaped brackets are fixed on the base frame, a positioning baffle is fixed on the V-shaped bracket close to the milling mechanism, and the flanges at both ends of the pipe are respectively mounted on the two V-shaped brackets.

[0007] Through the above technical solution, when it is necessary to mill a hole in the flange at the end of the pipe fitting, the pipe fitting is first hoisted onto two V-shaped brackets by a crane or other workpiece, and then the boring and milling power head moves toward the pipe fitting, and at the same time, the boring and milling power head drives the milling cutter to rotate, and after the milling cutter contacts the flange at the end of the pipe fitting, the hole can be milled on the flange;

[0008] The device has a simple structure, is easy to operate, has a low cost and high milling efficiency.

[0009] The utility model is further configured as follows: a positioning protection plate is fixed to a side of the positioning baffle away from the milling hole mechanism;

[0010] Two supporting protective plates are fixed on the inner walls of the V-shaped bracket;

[0011] The supporting guard plate and the positioning guard plate have various thickness specifications and are detachably fixed to the corresponding V-shaped bracket and the positioning baffle plate by screws.

[0012] The flange at the end of the pipe can be protected by the pad to prevent bumps and scratches. By setting multiple thickness specifications, flanges of different specifications can be adapted and the center height of the pipe can also be adjusted.

[0013] The utility model is further configured as follows: a plurality of assembly holes are formed on the flange close to the milling hole mechanism;

[0014] Positioning rods are sleeved in two of the assembly holes, and the other ends of the positioning rods are inserted and sleeved on the positioning baffle.

[0015] The corresponding flange can be fixed by the positioning rod to prevent the pipe fitting from moving during the milling operation.

[0016] The utility model is further configured as follows: the positioning rod includes an integrally formed first hexagonal portion, a connecting section, a second hexagonal portion, a first positioning section, a threaded section, a second positioning section and a guide cone section;

[0017] The first positioning section is provided with clearance matching with the assembly hole, and the second positioning section is provided with clearance matching with the positioning hole on the positioning baffle;

[0018] The positioning protection plate is formed with a hexagonal countersunk hole and a through hole corresponding to the positioning hole, a hexagonal nut is sleeved in the hexagonal countersunk hole, and the hexagonal nut is movably clamped between the bottom surface of the hexagonal countersunk hole and the positioning baffle; the threaded section is screwed on the hexagonal nut.

[0019] Through the above technical solution, when a tool such as a crane lifts the pipe fitting onto two V-shaped brackets and makes it roughly square, the guide cone of the positioning rod passes through the assembly hole of the flange, the hexagonal nut and the positioning hole on the positioning protective plate in sequence, and then the threaded section is screwed onto the hexagonal nut when the hexagonal section is rotated, thereby positioning the corresponding flange and fixing it on the positioning baffle; at this time, the first positioning section is inserted into the assembly hole, and the second positioning section is inserted into the positioning hole;

[0020] The first hexagonal portion and the second hexagonal portion can be used to knock the positioning rod and can also be used to rotate the positioning rod with a wrench.

[0021] The utility model is further configured as follows: the milling mechanism also includes a moving seat fixed at the bottom of the boring and milling power head, a second nut and a slider are fixed at the bottom of the moving seat, the second nut is screwed to the middle of the driving screw, and both ends of the driving screw are rotatably connected to the base; a guide rail arranged parallel to the driving screw is fixed to the base, and the slider is slidably connected to the guide rail;

[0022] One end of the driving screw rod away from the pipe positioning mechanism is fixedly connected to the piston rod of the servo motor. The servo motor is fixed on the base and electrically connected to the controller.

[0023] Through the above technical solution, the servo motor drives the driving screw to rotate, the driving screw drives the second nut to move, and the second nut drives the boring and milling power head to approach the pipe fitting through the moving seat to perform milling work on the pipe fitting.

[0024] The outstanding effects of the utility model are:

[0025] Compared with the existing technology, the large pipes can be simply clamped and positioned through the pipe positioning mechanism, and holes can be conveniently milled on the pipe flanges through the movable boring and milling power head, solving the problems of high cost and low efficiency of milling holes on existing large pipe flanges; at the same time, it has a simple structure, is easy to operate and has a low cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the structure of the utility model;

[0027] Figure 2 It is a front view of the utility model;

[0028] Figure 3 It is a right side view of the utility model;

[0029] Figure 4 for Figure 2 About the cross-sectional view of AA;

[0030] Figure 5 for Figure 4 About the cross-sectional view of BB;

[0031] Figure 6 It is a structural schematic diagram of the positioning rod of the utility model;

[0032] Figure 7 The utility model is a schematic diagram of the structure of a large pipe fitting.

[0033] Reference numerals: 10, chassis;

[0034] 20. Milling mechanism; 201. Boring and milling power head; 202. Milling cutter; 203. Moving seat; 204. Second nut; 205. Sliding block; 206. Driving screw; 207. Base; 208. Guide rail; 209. Servo motor;

[0035] 30. Pipe positioning mechanism; 301. V-shaped bracket; 302. Positioning baffle; 303. Positioning protection plate; 304. Support protection plate; 305. Positioning rod; 306. Hexagonal nut;

[0036] 3021, positioning hole;

[0037] 3031, hexagonal countersunk hole; 3032, through hole;

[0038] 3051, first hexagonal portion; 3052, connecting section; 3053, second hexagonal portion; 3054, first positioning section; 3055, threaded section; 3056, second positioning section; 3057, guide cone section;

[0039] 90. Pipe fitting; 91. Flange; 92. Assembly hole; 93. Sealing groove; 94. Disassembly hole. DETAILED DESCRIPTION

[0040] The following is a further detailed description of the specific implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0041] A simple milling device for large pipe fittings, such as Figure 1 , Figure 4 As shown, it includes a base frame 10, on which a milling mechanism 20 and a pipe positioning mechanism 30 are provided; the milling mechanism 20 includes a boring and milling power head 201 that can move left and right, and a milling cutter 202 is fixed at the output end of the boring and milling power head 201;

[0042] The pipe positioning mechanism 30 includes two V-shaped brackets 301 arranged on the left and right. The V-shaped brackets 301 are fixed on the base frame 10. A positioning baffle 302 is fixed on the V-shaped bracket 301 close to the milling mechanism 20. The flanges 91 at both ends of the pipe 90 are respectively mounted on the two V-shaped brackets 301.

[0043] Through the above technical solution, when it is necessary to mill a hole in the flange at the end of the pipe fitting, the pipe fitting is first hoisted onto two V-shaped brackets by a crane or other workpiece, and then the boring and milling power head moves toward the pipe fitting, and at the same time, the boring and milling power head drives the milling cutter to rotate, and after the milling cutter contacts the flange at the end of the pipe fitting, the hole can be milled on the flange;

[0044] The device has a simple structure, is easy to operate, has a low cost and high milling efficiency.

[0045] like Figure 3 , Figure 4 As shown, a positioning protection plate 303 is fixed to the side of the positioning baffle 302 away from the milling mechanism 20;

[0046] Two support protection plates 304 are fixed on the inner wall of the V-shaped bracket 301;

[0047] The supporting guard plate and the positioning guard plate have various thickness specifications and are detachably fixed to the corresponding V-shaped bracket and the positioning baffle plate by screws.

[0048] The flange at the end of the pipe can be protected by the pad to prevent bumps and scratches. By setting multiple thickness specifications, flanges of different specifications can be adapted and the center height of the pipe can also be adjusted.

[0049] like Figure 5 As shown, a plurality of assembly holes 92 are formed on the flange 91 close to the milling mechanism 20;

[0050] Two of the assembly holes 92 are sleeved with positioning rods 305 , and the other end of the positioning rods 305 is inserted into the positioning baffle 302 .

[0051] The corresponding flange can be fixed by the positioning rod to prevent the pipe fitting from moving during the milling operation.

[0052] like Figure 4-6 As shown, the positioning rod 305 includes an integrally formed first hexagonal portion 3051, a connecting section 3052, a second hexagonal portion 3053, a first positioning section 3054, a threaded section 3055, a second positioning section 3056 and a guide cone section 3057;

[0053] The first positioning section 3054 is provided with clearance fit in the assembly hole, and the second positioning section 3056 is provided with clearance fit in the positioning hole 3021 on the positioning baffle 302;

[0054] The positioning protection plate 303 is formed with a hexagonal countersunk hole 3031 and a through hole 3032 corresponding to the positioning hole 3021, and a hexagonal nut 306 is sleeved in the hexagonal countersunk hole 3031. The hexagonal nut 306 is movably clamped between the bottom surface of the hexagonal countersunk hole 3031 and the positioning baffle 302; the threaded section 3055 is screwed onto the hexagonal nut 306.

[0055] Through the above technical solution, when a tool such as a crane lifts the pipe fitting onto two V-shaped brackets and makes it roughly square, the guide cone of the positioning rod passes through the assembly hole of the flange, the hexagonal nut and the positioning hole on the positioning protective plate in sequence, and then the threaded section is screwed onto the hexagonal nut when the hexagonal section is rotated, thereby positioning the corresponding flange and fixing it on the positioning baffle; at this time, the first positioning section is inserted into the assembly hole, and the second positioning section is inserted into the positioning hole;

[0056] The first hexagonal portion and the second hexagonal portion can be used to knock the positioning rod and can also be used to rotate the positioning rod with a wrench.

[0057] like Figure 1 , Figure 2As shown, the milling mechanism 20 also includes a moving seat 203 fixed at the bottom of the boring and milling power head 201, a second nut 204 and a slider 205 are fixed at the bottom of the moving seat 203, the second nut 204 is screwed to the middle of the driving screw 206, and both ends of the driving screw 206 are rotatably connected to the base 207; a guide rail 208 arranged parallel to the driving screw 206 is fixed to the base 207, and the slider 205 is slidably connected to the guide rail 208;

[0058] One end of the driving screw 206 away from the pipe positioning mechanism 30 is fixedly connected to the piston rod of the servo motor 209 . The servo motor 209 is fixed on the base and electrically connected to the controller.

[0059] Through the above technical solution, the servo motor drives the driving screw to rotate, the driving screw drives the second nut to move, and the second nut drives the boring and milling power head to approach the pipe fitting through the moving seat to perform milling work on the pipe fitting.

[0060] 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 of the above assumptions should also be regarded as the protection scope of the present invention.

Claims

1. A simple milling device for large pipe fittings, comprising a base frame (10), characterized in that: The base frame (10) is provided with a milling mechanism (20) and a pipe positioning mechanism (30); the milling mechanism (20) comprises a boring and milling power head (201) movable leftward and rightward, and a milling cutter (202) is fixed at the output end of the boring and milling power head (201); The pipe fitting positioning mechanism (30) comprises two V-shaped brackets (301) arranged on the left and right, the V-shaped brackets (301) being fixed on the base frame (10), a positioning baffle (302) being fixed on the V-shaped bracket (301) close to the hole milling mechanism (20), and flanges (91) at both ends of the pipe fitting (90) being respectively mounted on the two V-shaped brackets (301).

2. A simple hole milling device for large pipe fittings according to claim 1, characterized in that: A positioning protection plate (303) is fixed on a side of the positioning baffle (302) away from the milling mechanism (20); Two supporting protection plates (304) are fixed on the inner walls of the V-shaped bracket (301).

3. A simple hole milling device for large pipes according to claim 2, characterized in that: A plurality of assembly holes (92) are formed on the flange (91) close to the hole milling mechanism (20); Two of the assembly holes (92) are sleeved with positioning rods (305), and the other end of the positioning rod (305) is inserted into the positioning baffle (302).

4. A simple hole milling device for large pipes according to claim 3, characterized in that: The positioning rod (305) comprises an integrally formed first hexagonal portion (3051), a connecting section (3052), a second hexagonal portion (3053), a first positioning section (3054), a threaded section (3055), a second positioning section (3056) and a guide cone section (3057); The first positioning section (3054) is provided with a clearance fit with the assembly hole, and the second positioning section (3056) is provided with a clearance fit with the positioning hole (3021) on the positioning baffle (302); The positioning protection plate (303) is formed with a hexagonal countersunk hole (3031) and a through hole (3032) corresponding to the positioning hole (3021); a hexagonal nut (306) is sleeved in the hexagonal countersunk hole (3031); the hexagonal nut (306) is movably clamped between the bottom surface of the hexagonal countersunk hole (3031) and the positioning baffle (302); and the threaded section (3055) is screwed onto the hexagonal nut (306).

5. A simple hole milling device for large pipes according to claim 1, characterized in that: The milling mechanism (20) further comprises a movable seat (203) fixed to the bottom of the boring and milling power head (201); a second nut (204) and a slider (205) are fixed to the bottom of the movable seat (203); the second nut (204) is screwed to the middle of a driving screw rod (206); both ends of the driving screw rod (206) are rotatably connected to a base (207); a guide rail (208) arranged parallel to the driving screw rod (206) is fixed to the base (207); and the slider (205) is slidably connected to the guide rail (208); One end of the driving screw rod (206) away from the pipe positioning mechanism (30) is fixedly connected to the piston rod of the servo motor (209).

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