Tool structure for reaming counter bore by magnetic drill

Abstract

The utility model relates to the technical field of hole machining, and discloses a tool structure for reaming a counter bore through a magnetic drill. A mounting platform is arranged, the mounting plane of the mounting platform is attached to the side face, away from the middle shell, of the flange, and the mounting platform is fixed to the flange through a bolt fastening assembly. The mounting platform is used as a base, and the magnetic attraction drill is attracted to the magnetic attraction plane; as the mounting plane, the magnetic suction plane and the plane of the flange located on the middle shell are located on the same side, the magnetic drill is located on the side face, close to the middle shell, of the flange at the moment, and after the magnetic drill is aligned with the base hole, counter boring operation can be conducted on the base hole in the forward direction. The magnetic drill is small in size, so that the magnetic drill does not interfere with the workpiece shell; in addition, the magnetic drill is installed and used in the forward direction, the construction environment requirement of the magnetic drill is met, circumferential bearing is better, and construction safety and stability are better. Based on the structure, occupation of a large machine tool can be avoided; and the advantages of the magnetic drill can be effectively exerted, and the requirements of the construction environment of the magnetic drill are met.

Description

Technical Field

[0001] The utility model relates to the technical field of hole processing, in particular to a magnetic drilling countersinking tooling structure. Background Art

[0002] In the post-weld processing of a cylindrical workpiece, there is a need to countersink the back side of the flange after drilling the bolt holes. The main structure of the workpiece is a middle shell plus two flanges, and the number of countersinks on the back side of the flange is as high as hundreds. The front boring and countersinking method has the problem of interference between the angular milling head and the workpiece shell. There are mainly two traditional technical solutions. The first solution is as follows: Figure 1 As shown in the figure, a large boring and milling machine is used to install a counter-countering cutter for counter-countering. This solution uses a small number of large machine tools, and long-term occupancy will result in excessive costs. The second solution is to use a magnetic drill to install a counter-countering cutter for counter-countering. Although the equipment used in this solution has a low investment cost and can be processed together with multiple machines, reverse countersinking does not meet the construction environment requirements of the magnetic drill, and there are problems such as insufficient axial reaction force and unstable equipment. Utility Model Content

[0003] In view of the above-mentioned defects in the prior art, a magnetic drill countersinking tooling structure is provided. The magnetic drill is placed in a forward arrangement by using a tooling platform, and a forward countersinking tool is installed to perform countersinking processing. During the processing, the magnetic drill is subjected to forward force, which is in line with the use environment of the magnetic drill, has higher processing efficiency, and better construction safety and stability.

[0004] The technical solution adopted by the utility model to solve the above technical problems is:

[0005] The magnetic drill countersinking tooling structure is characterized in that: the workpiece is a cylindrical structure with flanges at both ends and an intermediate shell; a mounting platform and a fixing bolt assembly are fixedly provided on the flange, a mounting plane and a magnetic plane are provided in the mounting platform, the mounting plane and the magnetic plane are arranged in parallel, the mounting plane is located on the inner side of the magnetic plane, and the mounting plane, the magnetic plane, and the plane of the flange on the intermediate shell are located on the same side; a mounting hole matching the base hole to be processed on the flange is provided on the mounting plane, and the size and position of the mounting hole match the size and position of the base hole; the bolt fixing assembly passes through the base hole and the mounting hole at the same time to fix the mounting platform on the flange; the magnetic drill is adsorbed on the magnetic plane.

[0006] According to the above technical solution, a guide rod is further provided, which passes through the reference hole to be processed; when the tool of the magnetic drill is aligned with the top of the guide rod, the magnetic drill in the position is fixed on the magnetic plane.

[0007] According to the above technical solution, the inner diameter of the mounting hole is consistent with the inner diameter of the base hole, the pitch circle radius of the mounting hole is the same as the pitch circle radius of the base hole, and the spacing between the mounting holes is an integer multiple of the spacing between two adjacent base holes.

[0008] According to the above technical solution, the spacing between the mounting holes is 3 to 5 times the spacing between two adjacent base holes.

[0009] According to the above technical solution, the two mounting holes are located at the two side edges of the mounting plane.

[0010] According to the above technical solution, the installation platform includes an upper panel and a lower panel arranged in parallel, and a reinforcing rib plate connected between the upper panel and the lower panel in a criss-cross pattern, the magnetic plane is arranged on the upper surface of the upper panel, and the reinforcing rib plate is connected to the lower surface of the upper panel and the area of ​​the lower panel directly below the upper panel; the installation plane is arranged in the area of ​​the lower panel other than the area directly below the upper panel.

[0011] According to the above technical solution, weight-reducing holes are provided on the non-installation plane of the lower panel and the reinforcing rib plate.

[0012] According to the above technical solution, the bolt fixing assembly includes a bolt, a nut, and a flat washer. The bolt passes through the base hole and the mounting hole in sequence, the flat washer is sleeved on the end of the bolt extending out of the mounting hole, and the bolt is tightened by the nut.

[0013] According to the above technical solution, the magnetic drill includes a magnetic drill body, a telescopic rod vertically arranged on the magnetic drill body, and a tool vertically facing downward. The end of the base hole close to the middle shell side is countersunk by rotating the tool.

[0014] According to the above technical solution, it also includes a pier, and the processed workpiece is placed on the pier.

[0015] The utility model has the following beneficial effects:

[0016] Set up the installation platform, fit the installation plane of the installation platform with the side of the flange away from the intermediate shell, and fix the installation platform to the flange by bolting the assembly. Use the installation platform as the base, and adsorb the magnetic drill on the magnetic plane; because the installation plane, magnetic plane, and the plane of the flange on the intermediate shell are on the same side, the magnetic drill is located on the side of the flange close to the intermediate shell at this time. After the magnetic drill is aligned with the base hole, the base hole can be countersunk in the forward direction. Since the magnetic drill is small in size, it does not interfere with the workpiece shell; in addition, the magnetic drill is installed and used in the forward direction, which meets the requirements of the magnetic drill construction environment, has better circumferential load, and better construction safety and stability.

[0017] Based on the above structure, it is possible to avoid occupying large machine tools, effectively bring into play the advantages of the magnetic drill, and meet the requirements of the magnetic drill construction environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of using a large boring and milling machine equipped with a countersinking cutter to perform countersinking processing;

[0019] Figure 2 This is a usage state diagram of an embodiment provided by the utility model;

[0020] Figure 3 It is a structural schematic diagram of an embodiment provided by the utility model;

[0021] Figure 4 This is a front view of the installation platform of the embodiment provided by the utility model;

[0022] Figure 5 It is a side view of the installation platform of the embodiment provided by the utility model;

[0023] Figure 6 It is a top view of the installation platform of the embodiment provided by the utility model;

[0024] In the figure, 1. cylinder structure; 1-1. flange; 2. mounting platform; 2-1. upper panel; 2-2. lower panel; 2-3. reinforcing rib plate; 3. fixing bolt assembly; 4. mounting plane; 5. magnetic plane; 6. base hole; 7. mounting hole; 8. pier; 9. magnetic drill. DETAILED DESCRIPTION

[0025] The utility model is described in detail below with reference to the accompanying drawings and embodiments.

[0026] Reference Figure 2 to Figure 6 As shown, the magnetic drilling countersinking tooling structure provided by the utility model.

[0027] Example 1

[0028] The workpiece is a cylindrical structure 1 with flanges 1-1 at both ends and an intermediate shell; a mounting platform 2 and a fixing bolt assembly 3 are fixed on the flange, a mounting plane 4 and a magnetic plane 5 are arranged in the mounting platform, the mounting plane and the magnetic plane are arranged in parallel, the mounting plane is located on the inner side of the magnetic plane, and the mounting plane, the magnetic plane, and the plane of the flange on the intermediate shell are located on the same side; a mounting hole 7 matching the base hole 6 to be processed on the flange is provided on the mounting plane, and the size and position of the mounting hole match the size and position of the base hole; the bolt fixing assembly passes through the base hole and the mounting hole at the same time to fix the mounting platform on the flange; the magnetic drill 9 is adsorbed on the magnetic plane.

[0029] In this embodiment, a mounting platform is provided, and the mounting plane of the mounting platform is fitted with the side of the flange away from the intermediate shell, and the mounting platform is fixed to the flange by a bolt fastening assembly. With the mounting platform as the base, the magnetic drill is adsorbed on the magnetic plane; since the mounting plane, the magnetic plane, and the plane of the flange on the intermediate shell are on the same side, the magnetic drill is located on the side of the flange close to the intermediate shell at this time, and after the magnetic drill is aligned with the base hole, the base hole can be countersunk in the forward direction. Since the magnetic drill is small in size, it does not interfere with the workpiece shell; in addition, the magnetic drill is installed and used in the forward direction, which meets the requirements of the magnetic drill construction environment, has better circumferential load-bearing, and better construction safety and stability.

[0030] Based on the above structure, it is possible to avoid occupying large machine tools, effectively bring into play the advantages of the magnetic drill, and meet the requirements of the magnetic drill construction environment.

[0031] Example 2

[0032] The structure and principle of Example 2 are similar to those of Example 1, except that: in order to facilitate the installation of the magnetic drill in a suitable position, a guide rod is further provided, and the guide rod passes through the reference hole to be processed; when the tool of the magnetic drill is aligned with the top of the guide rod, the magnetic drill in the said position is fixed in the position of the magnetic plane.

[0033] Example 3

[0034] The structure and principle of Example 3 are similar to those of Example 1, except that: a preferred arrangement of mounting holes is provided. The inner diameter of the mounting hole is consistent with the inner diameter of the base hole, the radius of the pitch circle where the mounting hole is located is the same as the radius of the pitch circle where the base hole is located, and the spacing between the mounting holes is an integer multiple of the spacing between two adjacent base holes.

[0035] In Example 3, preferably, the spacing between the mounting holes is 3 to 5 times the spacing between two adjacent base holes, that is, 2 to 4 base holes are left between two adjacent mounting holes for countersinking. After the 2 to 4 countersinking are completed, the mounting platform is replaced in a fixed position on the flange, and the unprocessed base hole on the flange is placed between the two mounting holes.

[0036] In order to stably install the mounting platform on the flange, the two mounting holes are located at the edges of the mounting plane on both sides. Of course, the mounting plane can also be located in the middle area of ​​the mounting plane, but if the mounting holes are in the middle area of ​​the mounting plane, there is a risk that the entire mounting platform will not be securely installed on the flange.

[0037] Example 4

[0038] The structure and principle of Example 4 are similar to those of Examples 1-3, except that: a preferred structural form of the mounting platform is provided. The mounting platform includes an upper panel 2-1 and a lower panel 2-2 arranged in parallel, and a reinforcing rib plate 2-3 connected between the upper panel and the lower panel in a crisscross pattern, the magnetic attraction plane is arranged on the upper surface of the upper panel, the reinforcing rib plate is connected to the lower surface of the upper panel and the area of ​​the lower panel located directly below the upper panel; the mounting plane is arranged in the area of ​​the lower panel other than the area directly below the upper panel. A reinforcing plate is also arranged at the bottom of the lower panel.

[0039] Preferably, weight-reducing holes are provided on the non-installation plane of the lower panel and on part of the reinforcing rib plate.

[0040] In embodiments 1-4, preferably, the bolt fixing assembly includes a bolt, a nut, and a flat washer, the bolt passes through the base hole and the mounting hole in sequence, the flat washer is sleeved on the end of the bolt extending out of the mounting hole, and the bolt is tightened by the nut.

[0041] In embodiments 1-4, preferably, the magnetic drill includes a magnetic drill body, a telescopic rod vertically arranged on the magnetic drill body, and a tool vertically facing downward, and the end of the base hole close to the middle shell side is countersunk by rotating the tool.

[0042] In the embodiments 1-4, preferably, a buttress 8 is further included, on which the workpiece is placed. The semi-finished cylindrical workpiece with processed flange surface, flange inner and outer circles, and flange bolt holes is placed on the buttress for leveling.

[0043] The working process of this utility model:

[0044] (1) Place the semi-finished cylinder workpiece with processed flange surface, flange inner and outer circles, and flange bolt holes on the pier for leveling;

[0045] (2) Take the processed lower plane of the flange as the reference plane, bolt the mounting platform to the two base holes on the flange surface at the same position as the tooling mounting holes, make the mounting plane of the mounting platform fit with the lower plane of the workpiece flange, and tighten the bolts;

[0046] (3) Place the magnetic drill on the magnetic surface of the mounting platform, drop the cutter bar, align the front end of the cutter with the guide bar, determine the installation position of the magnetic drill, and fix the magnetic drill on the magnetic surface;

[0047] (4) Turn on the magnetic drill to countersink the hole;

[0048] (5) Check the countersink depth based on the plane below the flange and stop the magnetic drill after it meets the design requirements;

[0049] (6) Lift the magnetic drill rod to release the adsorption force;

[0050] (7) Move the magnetic drill to the next hole position and repeat the above operation to complete the countersinking of the second hole;

[0051] (8) After drilling the countersinks within the range of the installation platform, rotate the installation platform as a whole to the position of the next batch of countersinks to be drilled, and complete the countersinking work on the pitch circle on the back of the entire flange.

[0052] Note: The above construction process steps are for a single magnetic drill. This solution can arrange 2 to 4 magnetic drills to work in parallel and work together to complete the processing of a full circle of countersunk holes on the dividing circle on the back of the flange.

[0053] By setting up the mounting platform, a position is provided for the installation of the magnetic drill, and the position that originally required counter-counter-cutting is changed to front counter-counter-cutting. By connecting the mounting plane of the mounting platform with the lower plane of the processed workpiece flange, it can be ensured that all countersunk holes have the same reference, and the bottom surfaces of the countersunk holes after counter-counter-cutting are on the same plane; at the same time, it does not affect the processing. The mounting platform structure is reasonably designed, and the strength and rigidity meet the use requirements. The protruding part of the lower panel is used as the mounting plane and processing reference. According to the problem that the base hole on the workpiece flange is close to the shell, which leads to the easy interference between the shell and the processing equipment, the tooling structure is designed, and the front countersinking with a magnetic drill is used to replace the traditional processing method of counter-counter-cutting, so that the processing is safer, more stable, and the processing cost is lower.

[0054] The above are only preferred embodiments of the present invention, and certainly cannot be used to limit the scope of rights of the present invention. Therefore, equivalent changes made according to the scope of patent application of the present invention still fall within the protection scope of the present invention.

Claims

1. The magnetic drilling countersinking tooling structure is characterized by: The workpiece is a cylindrical structure with flanges at both ends and an intermediate shell; a mounting platform and a fixing bolt assembly are fixedly provided on the flange, a mounting plane and a magnetic plane are provided in the mounting platform, the mounting plane and the magnetic plane are arranged in parallel, the mounting plane is located on the inner side of the magnetic plane, and the mounting plane, the magnetic plane, and the plane of the flange on the intermediate shell are located on the same side; a mounting hole matching the base hole to be processed on the flange is provided on the mounting plane, and the size and position of the mounting hole match the size and position of the base hole; the bolt fixing assembly passes through the base hole and the mounting hole at the same time to fix the mounting platform on the flange; the magnetic drill is adsorbed on the magnetic plane.

2. The magnetic drilling countersinking tooling structure according to claim 1 is characterized in that: A guide rod is also provided, which passes through the reference hole to be processed; when the tool of the magnetic drill is aligned with the top end of the guide rod, the magnetic drill at the position is fixed on the magnetic plane.

3. The magnetic drilling countersinking tooling structure according to claim 1 is characterized in that: The inner diameter of the mounting hole is consistent with the inner diameter of the base hole, the pitch circle radius of the mounting hole is the same as the pitch circle radius of the base hole, and the spacing between the mounting holes is an integer multiple of the spacing between two adjacent base holes.

4. The magnetic drilling countersinking tooling structure according to claim 1 is characterized in that: The spacing between the mounting holes is 3 to 5 times the spacing between two adjacent base holes.

5. The magnetic drilling countersinking tooling structure according to claim 3 or 4, characterized in that: Two mounting holes are located at the edges of both sides of the mounting plane.

6. The magnetic drilling countersinking tooling structure according to claim 1 is characterized in that: The mounting platform includes an upper panel and a lower panel arranged in parallel, and a reinforcing rib plate connected between the upper panel and the lower panel in a criss-cross pattern, the magnetic attraction plane is arranged on the upper surface of the upper panel, the reinforcing rib plate is connected to the lower surface of the upper panel and the area of ​​the lower panel directly below the upper panel; the mounting plane is arranged on the area of ​​the lower panel other than the area directly below the upper panel.

7. The magnetic drilling countersinking tooling structure according to claim 6 is characterized in that: Weight-reducing holes are provided on the non-installation plane of the lower panel and the reinforcing rib plate.

8. The magnetic drilling countersinking tooling structure according to claim 1 is characterized in that: The bolt fixing assembly comprises a bolt, a nut and a flat washer. The bolt passes through the base hole and the mounting hole in sequence, the flat washer is sleeved on the end of the bolt extending out of the mounting hole, and the bolt is tightened by the nut.

9. The magnetic drilling countersinking tooling structure according to claim 1, characterized in that: The magnetic drill comprises a magnetic drill body, a telescopic rod vertically arranged on the magnetic drill body, and a tool vertically facing downwards. The end of the base hole close to the middle shell side is countersunk by the rotation of the tool.

10. The magnetic drilling countersinking tooling structure according to claim 1, characterized in that: It also includes a pier, on which the processed part is placed.

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