A portable CNC flange sealing surface machining machine tool and use method thereof

Abstract

The present invention relates to a portable CNC flange sealing surface machining machine and a method for using the same, comprising a slewing bearing, a slewing tool assembly installed on the inner ring of the slewing bearing, and a slewing motor driving the inner ring of the slewing bearing to rotate, the slewing tool assembly comprising a tool, a plurality of support rods fixedly connected to the slewing bearing, a clamping adjustment mechanism installed on the outer ring of the slewing bearing, the clamping adjustment mechanism comprising a plurality of clamping screws uniformly distributed in the circumferential direction, the clamping screws extending radially along the slewing bearing and being threadedly connected to the outer ring of the slewing bearing, a fixing block being installed at one end of the clamping screw close to the flange, a clamping adjustment block being radially slidably connected to the clamping screw at one end of the fixing block close to the flange, an adjustment mechanism for adjusting the radial position of the clamping adjustment block being installed on the fixing block, the present invention solves the problem of repairing flange sealing surfaces during the production and use of pressure vessels, has the advantages of high machining accuracy, high machining efficiency, and low use cost, and greatly improves the efficiency of repairing flange sealing surfaces.

Description

Technical Field

[0001] The invention relates to the technical field of numerical control machine tools, and in particular to a portable numerical control flange sealing surface machining machine tool and a use method thereof. Background Art

[0002] During the production, long-term use and routine maintenance of pressure vessels, damage to the flange sealing surface is inevitable. These damages range from scratches to rust. The connection between flanges is tightened by flange sealing surfaces and different forms of sealing gaskets. Since pressure vessels are subjected to high pressure, the processing accuracy of flange sealing surfaces directly affects whether the connecting parts leak and whether they can meet the requirements of use. Since flanges are installed on containers and are located in various positions, repairing flanges has always been a difficult problem. There are two ways to deal with these flanges: one is to replace them all, which takes a long time and is expensive. The other is to repair the flanges, fill the defects by grinding, repair welding, etc., and then perform secondary processing to meet the use standards. This method is simple and easy to operate with low maintenance costs. Summary of the invention

[0003] In view of the deficiencies in the prior art, the present invention provides a portable numerically controlled flange sealing surface machining machine tool and a use method thereof, which can realize flange repair.

[0004] The present invention is achieved through the following technical scheme, which provides a portable CNC flange sealing surface processing machine tool, including a slewing bearing, a slewing tool assembly installed on the inner ring of the slewing bearing, and a slewing motor that drives the inner ring of the slewing bearing to rotate, the slewing tool assembly includes a tool, the slewing bearing is fixedly connected to a plurality of support rods extending toward the inner ring, the outer ring of the slewing bearing is equipped with a clamping adjustment mechanism, the clamping adjustment mechanism includes a plurality of circumferentially uniformly distributed clamping screws, the clamping screws extend radially along the slewing bearing and are threadedly connected to the outer ring of the slewing bearing, the clamping screw is provided with a fixed block at one end close to the flange, the fixed block is provided with a clamping adjustment block radially slidingly connected to the clamping screw at one end close to the flange, and the fixed block is provided with an adjustment mechanism for adjusting the radial position of the clamping adjustment block.

[0005] In this scheme, the support rod is supported on the flange sealing surface of the flange to achieve temporary fixation of the processing machine tool. The clamping screw is rotated to move it toward the flange, so that the clamping adjustment block is pressed against the outer circumferential surface of the flange to achieve clamping and fixation of the processing machine tool. The radial position of each clamping adjustment block relative to the fixed block is adjusted to make the fixed block move upward relative to the clamping adjustment block. Since the clamping adjustment block is fitted and fixed with the outer circumferential surface of the flange, the up and down position adjustment of the slewing bearing at this position is achieved. Through the adjustment of multiple clamping adjustment blocks, the slewing bearing is adjusted to be parallel to the flange sealing surface of the flange. At this time, the support rod is separated from the flange sealing surface of the flange, and the inner ring of the slewing bearing is driven to rotate by the rotary motor, which drives the tool to rotate to achieve rotational processing of the flange sealing surface of the flange, thereby repairing the flange sealing surface.

[0006] As an optimization, the fixed block is rotatably connected to the end of the clamping screw along the axis of the clamping screw. In this solution, the fixed block is rotatably connected to the clamping screw, so that when the clamping screw rotates, the fixed block and the clamping adjustment block remain stationary, so that the sliding direction of the clamping adjustment block relative to the fixed block is always parallel to the axis of the slewing bearing.

[0007] As an optimization, the adjustment mechanism includes an adjustment screw, a semicircular hole is formed on the fixed block, and a semicircular threaded hole is formed on the clamping adjustment block. The semicircular hole and the semicircular threaded hole constitute a mounting hole for accommodating the adjustment screw, and the adjustment screw is rotatably connected to the semicircular hole, and the adjustment screw is threadedly connected to the semicircular threaded hole. By rotating the adjustment screw, since the adjustment screw is rotatably connected to the semicircular hole, the adjustment screw and the fixed block will not move axially, and the adjustment screw is threadedly connected to the semicircular threaded hole, so that when the adjustment screw rotates, it moves relative to the clamping adjustment block, thereby adjusting the radial position of the clamping adjustment block relative to the fixed block.

[0008] As an optimization, a limiting protrusion is provided in the semicircular hole, and an annular groove matching the limiting protrusion is provided on the adjusting screw. The protrusion in this solution is located in the annular groove, thereby realizing the rotational connection between the adjusting screw and the semicircular hole.

[0009] As an optimization, the rotary tool assembly also includes a mounting beam fixedly connected to the inner ring of the rotary bearing, a transverse frame laterally slidably connected to the mounting beam, and a lifting frame vertically slidably connected to the transverse frame. The tool is fixedly connected to the lifting frame, and the rotary tool assembly also includes a transverse driving mechanism for driving the transverse frame to move laterally and a lifting driving mechanism for driving the lifting frame to move up and down. The lifting frame in this solution is lifted to realize the up and down feeding of the tool, and the transverse movement of the transverse frame is used to realize the radial movement of the tool along the flange sealing surface, so as to realize the processing of various positions.

[0010] As an optimization, the transverse driving mechanism includes a transverse screw installed on the mounting beam and a transverse motor driving the transverse screw to rotate, and the nut of the transverse screw is fixedly connected to the transverse frame. The transverse drive of the transverse frame is realized by the rotation of the transverse screw.

[0011] As an optimization, the lifting drive mechanism includes a lifting screw installed on the transverse frame and a lifting motor driving the lifting screw to rotate, and the nut of the lifting screw is fixedly connected to the lifting frame. The lifting frame is lifted and lowered by the rotation of the lifting screw.

[0012] As an optimization, a tool clamping tube for inserting a tool is fixedly connected to the lifting frame, and a plurality of clamping bolts are connected to the tool clamping tube to clamp the side of the tool. The clamping screw in this solution realizes the clamping of the tool, thereby facilitating the disassembly, assembly and replacement of the tool.

[0013] As an optimization, the support rod includes a support rod fixing seat and a plurality of rods connected in sequence coaxially with threads. In this solution, the plurality of rods are connected in sequence coaxially with threads, and different numbers of rods can be used to adapt to different flange diameters.

[0014] A method for using a portable CNC flange sealing surface machining machine tool comprises the following steps:

[0015] a. Place the processing machine tool from top to bottom on the flange to be processed, so that the support rod is supported on the flange sealing surface of the flange to achieve temporary fixation of the processing machine tool;

[0016] b. Rotate the clamping screw to move it toward the flange, so that the clamping adjustment block is pressed against the outer circumference of the flange to achieve clamping and fixing of the processing machine. When rotating the clamping screw, ensure that the adjusting screw between the fixed block and the clamping adjustment block is parallel to the axis of the slewing bearing;

[0017] c. Adjust the radial position of each clamping adjustment block relative to the fixed block, so that the fixed block moves upward relative to the clamping adjustment block. Since the clamping adjustment block is fixedly attached to the outer circumferential surface of the flange, the position of the clamping adjustment block remains unchanged, thereby achieving the up and down position adjustment of the slewing bearing at this position. By adjusting multiple clamping adjustment blocks, the slewing bearing is adjusted to be parallel to the flange sealing surface of the flange, and the support rod is separated from the flange sealing surface of the flange;

[0018] d. The inner ring of the rotary bearing is driven to rotate by the rotary motor, which drives the tool to rotate to perform rotary processing on the flange sealing surface of the flange plate, thereby repairing the flange sealing surface;

[0019] e. The tool is fed up and down by the lifting frame, and the tool is moved radially along the flange sealing surface by the lateral movement of the lateral moving frame to achieve processing at various positions.

[0020] The beneficial effects of the present invention are as follows: a portable CNC flange sealing surface processing machine tool and a method of using the same solve the problem of flange sealing surface repair during the production and use of pressure vessels. The machine has the advantages of high processing accuracy, high processing efficiency and low use cost, which greatly improves the efficiency of flange sealing surface repair.

[0021] This equipment can process various types of flange sealing surfaces such as RF, TG, MFM, FF, RJ, etc. It is easy to disassemble and install, with a diameter processing range of 0 to 980 mm and a depth processing range of 100 mm. The process is simple and fast, and 1-2 people can complete the operation. At present, this processing machine has been used in production, with a processing efficiency of 30-45 min / piece. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the structure of the present invention;

[0023] Figure 2 It is a schematic diagram of the bottom structure of the present invention;

[0024] Figure 3 It is a front view of the present invention;

[0025] Figure 4 A top view of the present invention;

[0026] Figure 5 It is a bottom view of the present invention;

[0027] Figure 6 It is a schematic diagram of the structure of the rotary tool assembly of the present invention;

[0028] Figure 7 It is a front view of the rotary tool assembly of the present invention;

[0029] Figure 8 For the present invention Figure 3 Sectional view of the middle AA plane;

[0030] Fig. 9 For the present invention Figure 8 Enlarged view of middle part B;

[0031] Fig.10 For the present invention Fig. 9 Middle CC section view;

[0032] As shown in the figure:

[0033] 1. Rotary bearing, 2. Rotary tool assembly, 3. Rotary motor, 4. Support rod, 5. Clamping adjustment mechanism, 6. Flange, 21. Mounting beam, 22. Transverse frame, 23. Transverse screw, 24. Transverse motor, 25. Lifting frame, 26. Lifting screw, 27. Lifting motor, 28. Tool, 29. Tool clamping tube, 51. Clamping screw, 52. Screw mounting seat, 53. Fixed block, 54. Clamping adjustment block, 55. Adjusting screw. DETAILED DESCRIPTION

[0034] In order to clearly illustrate the technical features of this solution, this solution is described below through a specific implementation method.

[0035] like Figures 1 to 10 As shown, a portable CNC flange sealing surface machining machine tool of the present invention comprises a slewing bearing 1, a slewing tool assembly 2 installed on the inner ring of the slewing bearing 1, and a slewing motor 3 for driving the inner ring of the slewing bearing 1 to rotate. The slewing tool assembly 2 comprises a tool 28. The tool in this embodiment is a turning tool. The turning tool is used to perform rotational machining on the flange sealing surface of the flange to achieve repair.

[0036] The rotary tool assembly 2 also includes a mounting beam 21 fixedly connected to the inner ring of the rotary bearing 1, a transverse frame 22 laterally slidably connected to the mounting beam 21, and a lifting frame 25 vertically slidably connected to the transverse frame 22. The mounting beam 21 is in the shape of a long strip and both ends are fixedly connected to the upper end surface of the inner ring of the rotary bearing 1 by bolts, so that the tool 28 can realize radial movement in the inner ring of the rotary bearing.

[0037] The transverse moving frame 22 is guided by a transverse moving guide rail installed on the mounting beam 21 , and the lifting frame 25 is guided by a lifting guide rail installed on the transverse moving frame 22 .

[0038] like Figure 6 As shown, the tool 28 is fixedly connected to the lifting frame 25. In order to fix the tool 28 and facilitate disassembly and assembly, a tool clamping tube 29 into which the tool 28 can be inserted is fixedly connected to the lifting frame 25. The tool 28 is inserted into the tool clamping tube 29 from top to bottom. The tool clamping tube 29 is connected to a plurality of clamping bolts that are clamped on the side of the tool 28. The clamping screw realizes the clamping of the tool, thereby facilitating the disassembly and replacement of the tool.

[0039] The rotary tool assembly 2 also includes a lateral movement driving mechanism for driving the lateral movement of the lateral movement frame 22 and a lifting driving mechanism for driving the lifting frame 25. The lifting frame is lifted to realize the up and down feeding of the tool, and the lateral movement of the lateral movement frame realizes the radial movement of the tool along the flange sealing surface to realize the processing of various positions.

[0040] The transverse driving mechanism includes a transverse screw 23 mounted on the mounting beam 21 and a transverse motor 24 driving the transverse screw 23 to rotate, and the nut of the transverse screw 23 is fixedly connected to the transverse frame 22. The transverse motor 24 is mounted on the mounting beam 21 and connected to one end of the transverse screw 23 through a coupling, and the transverse drive of the transverse frame is realized through the rotation of the transverse screw.

[0041] The lifting drive mechanism includes a lifting screw 26 mounted on the traverse frame 22 and a lifting motor 27 driving the lifting screw 26 to rotate, and the screw nut of the lifting screw 26 is fixedly connected to the lifting frame 25. The lifting motor 27 is mounted on the upper end of the traverse frame 22 and connected to the upper end of the lifting screw 26 through a coupling, and the lifting frame is lifted and lowered by the rotation of the lifting screw.

[0042] The slewing bearing 1 is fixed with a plurality of support rods 4 extending toward the inner ring. In this embodiment, four support rods 4 are provided and are evenly distributed in the circumferential direction. The support rod 4 includes a support rod fixing seat and a plurality of rods connected in sequence with coaxial threads. The support rod fixing seat is fixed to the circumferential surface of the inner ring of the slewing bearing 1 by bolts. The first rod is threadedly connected to the support rod fixing seat, and the remaining rods are threadedly connected in sequence, so as to piece together the length of the entire support rod 4. Different numbers of rods can be used to adapt to different flange diameters.

[0043] The outer ring of the slewing bearing 1 is equipped with a clamping adjustment mechanism 5, which includes a plurality of clamping screws 51 evenly distributed in the circumferential direction. In this embodiment, four clamping screws 51 are provided. The clamping screws 51 extend radially along the slewing bearing 1 and are threadedly connected to the outer ring of the slewing bearing 1. The lower end surface of the outer ring of the slewing bearing 1 is bolted with a screw mounting seat 52, and the clamping screw 51 is threadedly connected to the screw mounting seat 52.

[0044] A fixing block 53 is installed at one end of the clamping screw 51 close to the flange, and a clamping adjustment block 54 is slidably connected to the end of the clamping screw 51 close to the flange 6 in the radial direction of the clamping screw 51. The fixing block 53 is rotatably connected to the end of the clamping screw 51 along the axis of the clamping screw 51, so that when the clamping screw rotates, the fixing block and the clamping adjustment block remain stationary, so that the sliding direction of the clamping adjustment block relative to the fixed block is always parallel to the axis of the slewing bearing.

[0045] One end of the fixing block 53 close to the flange 6 is slidably connected with a clamping adjustment block 54 along the radial direction of the clamping screw 51. Fig. 9 As shown, the fixing block 53 is in a convex shape, and a concave groove is provided on the clamping and adjusting block 54 , thereby realizing sliding connection between the clamping and adjusting block 54 and the fixing block 53 .

[0046] The fixing block 53 is provided with an adjustment mechanism for adjusting the radial position of the clamping adjustment block 54. The adjustment mechanism includes an adjustment screw 55, and a hexagonal hole is provided at the lower end of the adjustment screw 55 to facilitate the rotation of the adjustment screw 55. The fixing block 53 is provided with a semicircular hole, and the clamping adjustment block 54 is provided with a semicircular threaded hole. The semicircular hole and the semicircular threaded hole constitute a mounting hole for accommodating the adjustment screw 55. The adjustment screw 55 is rotatably connected to the semicircular hole. In order to realize the rotatable connection between the adjustment screw 55 and the semicircular hole, as shown in FIG. Fig.10 As shown, a limiting protrusion is provided in the semicircular hole, and an annular groove adapted to the limiting protrusion is provided on the adjusting screw 55. The protrusion is located in the annular groove, thereby realizing the rotation connection between the adjusting screw and the semicircular hole.

[0047] The adjusting screw 55 is threadedly connected to the semicircular threaded hole. By rotating the adjusting screw, since the adjusting screw is rotatably connected to the semicircular hole, the adjusting screw and the fixed block will not move axially, and the adjusting screw is threadedly connected to the semicircular threaded hole, so that when the adjusting screw rotates, it moves relative to the clamping adjustment block, thereby adjusting the radial position of the clamping adjustment block relative to the fixed block.

[0048] A method for using a portable CNC flange sealing surface machining machine tool comprises the following steps:

[0049] a. Place the processing machine tool from top to bottom on the flange 6 to be processed, so that the support rod 4 is supported on the flange sealing surface of the flange 6 to achieve temporary fixation of the processing machine tool;

[0050] b. Rotate the clamping screw 51 to move it toward the flange 6, so that the clamping adjustment block 54 is pressed against the outer circumference of the flange 6 to achieve clamping and fixing of the processing machine. When rotating the clamping screw, ensure that the adjusting screw between the fixing block and the clamping adjustment block is parallel to the axis of the slewing bearing;

[0051] c. Adjust the radial position of each clamping adjustment block 54 relative to the fixed block 53, so that the fixed block 53 moves upward relative to the clamping adjustment block 54. Since the clamping adjustment block 54 is fixedly fitted with the outer circumferential surface of the flange 6, the position of the clamping adjustment block 54 remains unchanged, thereby achieving the up and down position adjustment of the slewing bearing 1 at this position. By adjusting multiple clamping adjustment blocks 54, the slewing bearing 1 is adjusted to be parallel to the flange sealing surface of the flange 6. At this time, the support rod 4 is separated from the flange sealing surface of the flange 6;

[0052] d. The inner ring of the slewing bearing 1 is driven to rotate by the slewing motor 3, and the tool 28 is driven to rotate to perform rotation processing on the flange sealing surface of the flange 6, so as to repair the flange sealing surface;

[0053] e. The lifting frame 25 is lifted to realize the up and down feeding of the tool 28, and the lateral movement of the lateral moving frame 22 is realized to realize the radial movement of the tool 28 along the flange sealing surface, so as to realize the processing of each position.

[0054] Of course, the above description is not limited to the above examples. Technical features not described in the present invention can be achieved by or by using existing technologies, which will not be described here. The above embodiments and drawings are only used to illustrate the technical scheme of the present invention and are not limitations of the present invention. The present invention is described in detail with reference to the preferred implementation methods. Ordinary technicians in this field should understand that changes, modifications, additions or substitutions made by ordinary technicians in this technical field within the essential scope of the present invention do not depart from the purpose of the present invention, and should also fall within the scope of protection of the claims of the present invention.

Claims

1. A portable CNC flange sealing surface machining machine, characterized in that: The invention comprises a slewing bearing (1), a slewing tool assembly (2) mounted on the inner ring of the slewing bearing (1), and a slewing motor (3) for driving the inner ring of the slewing bearing (1) to rotate, wherein the slewing tool assembly (2) comprises a tool (28), a plurality of support rods (4) extending toward the inner ring are fixedly connected to the slewing bearing (1), a clamping adjustment mechanism (5) is mounted on the outer ring of the slewing bearing (1), and the clamping adjustment mechanism (5) comprises a plurality of clamping screws (51) uniformly distributed in the circumferential direction, the clamping screws (51) extending radially along the slewing bearing (1) and being threadedly connected to the outer ring of the slewing bearing (1), a fixing block (53) being mounted on one end of the clamping screw (51) close to the flange, a clamping adjustment block (54) being slidably connected to one end of the fixing block (53) close to the flange (6) along the outer side of the clamping screw (51) in a vertical direction, and an adjustment mechanism for adjusting the vertical position of the clamping adjustment block (54) is mounted on the fixing block (53); The fixing block (53) is rotatably connected to the end of the clamping screw (51) along the axis of the clamping screw (51); The adjusting mechanism comprises an adjusting screw (55), a semicircular hole is formed on the fixing block (53), and a semicircular threaded hole is formed on the clamping adjusting block (54), wherein the semicircular hole and the semicircular threaded hole constitute a mounting hole for accommodating the adjusting screw (55), the adjusting screw (55) is rotatably connected to the semicircular hole, and the adjusting screw (55) is threadedly connected to the semicircular threaded hole; A limiting protrusion is provided in the semicircular hole, and an annular groove matching the limiting protrusion is provided on the adjusting screw (55); The rotary tool assembly (2) further comprises a mounting beam (21) fixedly connected to the inner ring of the rotary bearing (1), a transverse frame (22) slidably connected to the mounting beam (21) in a transverse direction, and a lifting frame (25) slidably connected to the transverse frame (22) in a vertical direction. The tool (28) is fixedly connected to the lifting frame (25). The rotary tool assembly (2) further comprises a transverse driving mechanism for driving the transverse frame (22) to move transversely and a lifting driving mechanism for driving the lifting frame (25) to move upward and downward.

2. The portable CNC flange sealing surface machining machine according to claim 1, characterized in that: The transverse drive mechanism comprises a transverse screw (23) mounted on a mounting beam (21) and a transverse motor (24) driving the transverse screw (23) to rotate, and the nut of the transverse screw (23) is fixedly connected to the transverse frame (22).

3. The portable CNC flange sealing surface machining machine according to claim 1, characterized in that: The lifting drive mechanism comprises a lifting screw (26) mounted on the transverse frame (22) and a lifting motor (27) driving the lifting screw (26) to rotate, and a nut of the lifting screw (26) is fixedly connected to the lifting frame (25).

4. The portable CNC flange sealing surface machining machine according to claim 1, characterized in that: A tool clamping tube (29) capable of accommodating the insertion of a tool (28) is fixedly connected to the lifting frame (25), and a plurality of clamping bolts that are clamped on the side of the tool (28) are connected to the tool clamping tube (29).

5. The portable CNC flange sealing surface machining machine tool according to claim 1, characterized in that: The support rod (4) comprises a support rod fixing seat and a plurality of rod members which are coaxially threadedly connected in sequence.

6. A method for using the portable CNC flange sealing surface machining machine tool according to claim 1, characterized in that: The steps include: a. Place the processing machine tool from top to bottom on the flange (6) to be processed, so that the support rod (4) is supported on the flange sealing surface of the flange (6), thereby temporarily fixing the processing machine tool; b. Rotate the clamping screw (51) to move it toward the flange (6), so that the clamping adjustment block (54) is pressed against the outer circumferential surface of the flange (6), thereby clamping and fixing the processing machine tool; c. adjusting the position of each clamping adjustment block (54) relative to the fixed block (53) in the vertical direction so that the fixed block (53) moves upward relative to the clamping adjustment block (54). Since the clamping adjustment block (54) is fixedly attached to the outer circumferential surface of the flange (6), the up-and-down position adjustment of the flange (6) at this position is achieved. By adjusting the multiple clamping adjustment blocks (54), the flange sealing surface of the flange (6) is adjusted to be parallel to the slewing bearing (1). At this time, the support rod (4) is separated from the flange sealing surface of the flange (6); d. The inner ring of the slewing bearing (1) is driven to rotate by the slewing motor (3), thereby driving the tool (28) to rotate to perform slewing processing on the flange sealing surface of the flange plate (6), thereby repairing the flange sealing surface; e. The tool (28) is fed up and down by lifting the lifting frame (25), and the tool (28) is moved radially along the flange sealing surface by the lateral movement of the lateral movement frame (22), thereby achieving processing at various positions.

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