Planing machining method for rectangular inner hole of waveguide tube

Abstract

The invention relates to a method for planing a rectangular inner hole of a waveguide tube, which is characterized in that a tool bit of a planer tool blade of a planing tool for the rectangular inner hole of the waveguide tube is provided with a tool nose, and the angle of the tool nose is an arc angle; during planing, the tool nose of the planing tool blade is planed into the side edge of the adjacent inner hole face, the planing depth is the same as the preset planing depth of the adjacent inner hole face, and planing of the current inner hole face to be machined and the corner of the adjacent inner hole face is completed. The planer tool has the advantages that due to the design of the tool noses with the arc angles on the two sides of the planer tool blade, the planer tool blade can be planed into the side edges of the adjacent inner hole faces through the tool noses, planing machining of the corners of the two adjacent inner hole faces is completed, and when planing machining of the next adjacent inner hole face is carried out, the planer tool blade is convenient to use. The point of the planer tool blade slightly avoids the planed corner part, so that the corner part of the inner hole is prevented from being damaged, the inner hole surface and the corner part can be easily connected, and the perpendicularity and the smoothness of the corner part of the inner hole of the waveguide tube are ensured to reach the standard.

Description

Technical Field

[0001] The invention relates to the technical field of waveguide tube processing, in particular to a planing processing method for a rectangular inner hole of a waveguide tube. Background Art

[0002] Waveguide is a hollow metal conduit with a very smooth inner wall. It is an indispensable component for electromagnetic wave transmission in the field of information communication. The waveguide requires the interior to be as smooth as possible in order to minimize the transmission loss of electromagnetic waves.

[0003] Chinese patent document 2018101673007 discloses a magnesium-lithium alloy waveguide and a method for manufacturing the same. The waveguide is formed by extrusion to obtain a waveguide blank. Since the magnesium-lithium alloy is relatively soft, vertical lines or marks will appear during the extrusion process, resulting in unsatisfactory surface roughness. The r angle of the waveguide is small, and extrusion forming is difficult.

[0004] The applicant's Chinese patent application CN119057123A discloses a planing tool for a rectangular inner hole of a waveguide tube and a waveguide rectangular inner hole planing processing equipment. The two opposite inner hole surfaces of the waveguide tube can be planed at the same time by a double-sided planer to achieve the required smoothness with high processing efficiency. The double-sided planer can be continuously fed and pushed outward without the need for frequent tool changes, and the inner holes of waveguide tubes of different sizes can be planed.

[0005] In the prior art, the planer cuts the processing surface through the straight blade on the front side of the cutter head. The left and right sides of the straight blade protrude from the sides of the planer just to make room, so the inclination angle of the side is relatively small.

[0006] When the inner hole surface of the waveguide is planed by such a planer, the planer will only plan the visible range of the inner hole surface. After processing one inner hole surface, when planing the next adjacent inner hole surface, due to the existence of mechanical errors, it is difficult for the end of the straight blade of the planer to be aligned with the completed inner hole surface, and steps are easily formed, resulting in difficulty in meeting the verticality and smoothness standards of the corners of the inner hole of the waveguide and a high scrap rate. Summary of the invention

[0007] The technical problem to be solved by the present invention is to provide a planing method for a rectangular inner hole of a waveguide tube, thereby reducing the difficulty of processing the corners of the inner hole of the waveguide tube.

[0008] The technical solution adopted by the present invention to solve the technical problem is: a planing method for a rectangular inner hole of a waveguide tube, using a waveguide tube rectangular inner hole planing tool to plan the rectangular inner hole of the waveguide tube;

[0009] The waveguide rectangular inner hole planing tool comprises a tool bar and a planing blade, the planing blade is mounted on the tool bar, the tool head of the planing blade comprises a straight blade edge and side blade edges on both sides of the straight blade edge, the corners of the straight blade edge and the side blade edge are the blade tip of the tool head, the angle of the blade tip is an arc angle, the planing blade is perpendicular to the length direction of the tool bar, and the straight blade edge, the side blade edge and the blade tip are located outside the tool bar;

[0010] The steps include:

[0011] A. Clamp the waveguide and the waveguide rectangular inner hole planing tool, so that the length direction of the waveguide is parallel to the length direction of the waveguide rectangular inner hole planing tool, and the inner hole surface of the waveguide to be processed is in the processing position, and the straight blade of the planing tool is parallel to the inner hole surface to be processed;

[0012] B. The waveguide rectangular inner hole planing tool moves to the initial position;

[0013] C. With the length direction of the waveguide as the X direction, the width direction of the waveguide as the Z direction, and the height direction of the waveguide as the Y direction, the width direction of the waveguide is the width direction of the inner hole surface to be processed currently. The waveguide rectangular inner hole planing tool starts from one side of the inner hole surface to be processed currently in the Z direction and moves forward along the X direction, so that the planing blade is inserted from one end of the waveguide and then passes through the other end of the waveguide to perform the first planing, with the starting side of the Z direction as the left side, the end where the planing blade is inserted as the rear end of the waveguide, and the end where the planing blade passes through as the front end of the waveguide. During this planing, the blade tip on the left side of the planing blade plans into the side of the adjacent inner hole surface on the left side of the inner hole surface to be processed currently, and the planing depth is the same as the predetermined planing depth of the adjacent inner hole surface, thereby completing the planing process of the inner hole surface to be processed currently and the corner of the adjacent inner hole surface;

[0014] D. Retract the waveguide rectangular inner hole planing tool: the waveguide rectangular inner hole planing tool moves downward in the Y direction to disengage the planing blade, and then the waveguide rectangular inner hole planing tool moves backward in the X direction to pull the waveguide rectangular inner hole planing tool out of the inner hole of the waveguide, and the planing blade passes through the rear end of the waveguide;

[0015] E. The waveguide rectangular inner hole planing tool moves upward along the Y direction to reset the planing blade to the processing position. At the same time, the front or rear waveguide rectangular inner hole planing tool moves rightward along the Z direction. Then the waveguide rectangular inner hole planing tool moves forward along the X direction to insert the planing blade from the rear end of the waveguide and then pass through the front end of the waveguide to complete the second planing. The second planing area overlaps with the first planing area.

[0016] F. Repeat steps D and E until the planer blade moves rightward along the Z direction to the rightmost side of the inner hole surface to be processed, and then perform the last planing. The inner hole surface to be processed is planed from left to right. During this planing, the tip of the right side of the planer blade cuts into the side of the adjacent inner hole surface on the right side of the inner hole surface to be processed, and the cutting depth is the same as the predetermined planing depth of the adjacent inner hole surface, completing the planing of the corner of the inner hole surface to be processed and the adjacent inner hole surface;

[0017] G. Rotate the waveguide to rotate the other inner hole surface of the inner hole of the waveguide to the processing position, and then repeat steps B to F to complete the planing processing of the other inner hole surface of the inner hole of the waveguide. In this step, if the corner of the inner hole surface to be processed has been planed by the tip of the planer blade in the previous processing step, when the inner hole surface to be processed is planed, the tip of the planer blade avoids the corner that has been planed;

[0018] H. Repeat step G until all inner hole surfaces are planed.

[0019] In some embodiments, optionally, the angle between the straight blade and the side blade is 50 to 65 degrees.

[0020] In some embodiments, optionally, the planer blade is triangular shaped.

[0021] In some embodiments, optionally, the rear end of the tool rod has a tool handle for clamping.

[0022] In some embodiments, optionally, a planer blade is fixed to the front end of the cutter bar.

[0023] The beneficial effect of the present invention is that through the design of the blade tips with arc angles on both sides of the planer blade, when the planer blade is planing the inner hole surface, the blade tip can plan into the side of another inner hole surface adjacent to the inner hole surface to be processed currently, thereby completing the planing of the corners of two adjacent inner hole surfaces; when performing the planing of the next adjacent inner hole surface, the design of the blade tip with an arc angle allows the blade tip of the planer blade to slightly avoid the corner that has been planed, thereby easily achieving the connection between the inner hole surface and the corner while avoiding damaging the corner of the inner hole, thereby ensuring that the verticality and smoothness of the corner of the inner hole of the waveguide meet the standards. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The present invention is further described below in conjunction with the accompanying drawings and embodiments;

[0025] Figure 1 It is a schematic diagram of the structure of a rectangular inner hole planing tool for a waveguide tube according to Embodiment 1 of the present invention from a three-dimensional perspective;

[0026] Figure 2It is a schematic structural diagram of a waveguide rectangular inner hole planing tool from a front view according to Embodiment 1 of the present invention;

[0027] Figure 3 This is a schematic diagram of the structure of a waveguide rectangular inner hole planing tool inserted into a waveguide for planing according to Embodiment 1 of the present invention from a three-dimensional perspective;

[0028] Figure 4 for Figure 3 A structural diagram from another perspective;

[0029] Figure 5 It is a schematic diagram of the planing process in which the tip of the planer blade planes into the side edge of the adjacent inner hole surface in step C of embodiment 1 of the present invention;

[0030] Figure 6 It is a schematic structural diagram of the inner hole surface after the first planing in step C of embodiment 1 of the present invention;

[0031] Figure 7 is a schematic structural diagram of the first inner hole surface after planing in step F of embodiment 1 of the present invention;

[0032] Figure 8 is a schematic diagram of planing processing performed with the tip of the planer blade avoiding the corner in step G of embodiment 1 of the present invention;

[0033] Fig. 9 for Figure 8 A magnified image of point A;

[0034] Fig.10 It is a schematic structural diagram of a waveguide rectangular inner hole planing tool according to Embodiment 2 of the present invention;

[0035] In the figure, 1. tool bar, 2. planer blade, 2-1. straight blade edge, 2-2. side blade edge, 2-3. blade tip, 3. waveguide tube, 4. tool handle. DETAILED DESCRIPTION

[0036] Embodiment 1, as Figures 1 to 4 As shown, a waveguide rectangular inner hole planing tool comprises a tool bar 1 and a planing blade 2, the planing blade 2 is mounted on the tool bar 1, the tool head of the planing blade 2 comprises a straight blade 2-1 and side blades 2-2 on both sides of the straight blade 2-1, the corners of the straight blade 2-1 and the side blade 2-2 are the blade tips 2-3 of the tool head, the angle of the blade tip 2-3 is an arc angle, the planing blade 2 is perpendicular to the length direction of the tool bar 1, the straight blade 2-1, the side blade 2-2 and the blade tip 2-3 are located outside the tool bar 1. The arc angle is tangent to the straight blade 2-1 and the side blade 2-2.

[0037] The included angle between the straight blade 2-1 and the side blade 2-2 is 50 to 65 degrees. Preferably, the included angle between the straight blade 2-1 and the side blade 2-2 is 60 degrees. Figures 1 to 3 shown.

[0038] The planer blade 2 is triangular.

[0039] The rear end of the tool bar 1 is provided with a tool handle 4 for clamping.

[0040] The planer blade 2 is fixed to the front end of the cutter bar 1 by welding or other conventional methods.

[0041] A planing method for a rectangular inner hole of a waveguide tube, using the above-mentioned rectangular inner hole planing tool of the waveguide tube to plan the rectangular inner hole of the waveguide tube;

[0042] The steps include:

[0043] A. Clamp the waveguide 3 and the waveguide rectangular inner hole planing tool, so that the length direction of the waveguide 3 is parallel to the length direction of the waveguide rectangular inner hole planing tool, and the inner hole surface of the waveguide 3 to be processed is in a processing position, and the straight blade 2-1 of the planer blade 2 is parallel to the inner hole surface to be processed;

[0044] B. The waveguide rectangular inner hole planing tool moves to the initial position;

[0045] C. Figure 3 and 4 As shown, the length direction of the waveguide 3 is the X direction, the width direction of the waveguide 3 is the Z direction, and the height direction of the waveguide 3 is the Y direction. The width direction of the waveguide 3 is the width direction of the inner hole surface to be processed currently. The waveguide rectangular inner hole planing tool starts from one side of the Z direction of the inner hole surface to be processed currently and moves forward along the X direction, so that the planer blade 2 is inserted from one end of the waveguide 3 and then passes through the other end of the waveguide 3 to perform the first planing, with the starting side of the Z direction as the left side, the end where the planer blade 2 is inserted as the rear end of the waveguide 3, and the end where the planer blade 2 passes through as the front end of the waveguide 3. During this planing, the blade tip 2-3 on the left side of the planer blade 2 plans into the side of the adjacent inner hole surface on the left side of the inner hole surface to be processed currently, and the planing depth is the same as the predetermined planing depth of the adjacent inner hole surface, thereby completing the planing processing of the inner hole surface to be processed currently and the corner of the adjacent inner hole surface, as shown in FIG. Figure 5 and 6 As shown;

[0046] D. Retract the waveguide rectangular inner hole planing tool: the waveguide rectangular inner hole planing tool moves downward in the Y direction to disengage the planer blade 2, and then the waveguide rectangular inner hole planing tool moves backward in the X direction to pull the waveguide rectangular inner hole planing tool out of the inner hole of the waveguide 3, and the planer blade 2 passes through the rear end of the waveguide 3;

[0047] E. The waveguide rectangular inner hole planing tool moves upward along the Y direction to reset the planer blade 2 to the processing position. At the same time, the front or rear waveguide rectangular inner hole planing tool moves rightward along the Z direction. Then the waveguide rectangular inner hole planing tool moves forward along the X direction to insert the planer blade 2 from the rear end of the waveguide 3 and then pass through the front end of the waveguide 3 to complete the second planing. The second planing area overlaps with the first planing area.

[0048] F. Figure 7 As shown, step D and step E are repeated until the planer blade 2 moves rightward along the Z direction to the rightmost side of the inner hole surface to be processed, and then the last planing is performed, and the inner hole surface to be processed is planed from left to right. During this planing, the blade tip 2-3 on the right side of the planer blade 2 cuts into the side of the adjacent inner hole surface on the right side of the inner hole surface to be processed, and the cutting depth is the same as the predetermined planing depth of the adjacent inner hole surface, completing the planing of the corner of the inner hole surface to be processed and the adjacent inner hole surface;

[0049] G. Rotate the waveguide 3 to rotate the other inner hole surface of the inner hole of the waveguide 3 to the processing position, and then repeat steps B to F to complete the planing processing of the other inner hole surface of the inner hole of the waveguide 3. In this step, if the corner of the inner hole surface to be processed has been planed by the tip 2-3 of the planer blade 2 in the previous processing step, when the inner hole surface to be processed is planed, the tip 2-3 of the planer blade 2 avoids the corner that has been planed. Figure 8 and 9 As shown;

[0050] H. Repeat step G until all inner hole surfaces are planed.

[0051] In this embodiment 1, a specially manufactured machine can be used to clamp the waveguide tube rectangular inner hole planing tool and the waveguide tube 3, and the planing process can be performed according to the planing process method of this embodiment 1. Alternatively, a conventional multi-axis CNC machine tool can be used, and then the waveguide tube rectangular inner hole planing tool and the waveguide tube 3 can be clamped respectively through the spindle chuck and the matching waveguide tube 3 clamping mechanism, and the planing process can be performed according to the planing process method of this embodiment 1.

[0052] In the present embodiment 1, the waveguide 3 is rotated by automatically indexing through the indexing function of a special machine or a conventional multi-axis CNC machine tool, so that the other inner hole surface of the inner hole of the waveguide 3 is rotated to the processing position.

[0053] Embodiment 2 is basically the same as embodiment 1, and the difference from embodiment 1 is that the planer blade 2 is trapezoidal, such as Fig.10 shown.

[0054] Embodiment 3 is basically the same as Embodiment 1, and differs from Embodiment 1 in that the rear end of the tool rod 1 does not have a tool handle 4 for clamping, but a matching clamping sleeve is put on the rear end of the tool rod 1, and the tool rod 1 is clamped by the clamping sleeve.

Claims

1. A planing method for a rectangular inner hole of a waveguide tube, characterized in that: The rectangular inner hole of the waveguide is planed by using a waveguide rectangular inner hole planing tool; The waveguide rectangular inner hole planing tool comprises a tool bar (1) and a planing blade (2), wherein the planing blade (2) is mounted on the tool bar (1), and a cutter head of the planing blade (2) comprises a straight cutting edge (2-1) and side cutting edges (2-2) on both sides of the straight cutting edge (2-1), the corners of the straight cutting edge (2-1) and the side cutting edge (2-2) are the cutting tips (2-3) of the cutter head, and the corners of the cutting tips (2-3) are arc angles, the planing blade (2) is perpendicular to the length direction of the tool bar (1), and the straight cutting edge (2-1), the side cutting edges (2-2) and the cutting tips (2-3) are located outside the tool bar (1); The steps include: A. Clamping the waveguide tube (3) and the waveguide tube rectangular inner hole planing tool so that the length direction of the waveguide tube (3) and the length direction of the waveguide tube rectangular inner hole planing tool are parallel, and the inner hole surface of the waveguide tube (3) to be processed is in a processing position, and the straight blade edge (2-1) of the planer blade (2) is parallel to the inner hole surface to be processed; B. The waveguide rectangular inner hole planing tool moves to the initial position; C. With the length direction of the waveguide (3) as the X direction, the width direction of the waveguide (3) as the Z direction, and the height direction of the waveguide (3) as the Y direction, the width direction of the waveguide (3) being the width direction of the inner hole surface to be processed currently, the waveguide rectangular inner hole planing tool starts from one side of the inner hole surface to be processed currently in the Z direction and moves forward along the X direction, so that the planing blade (2) is inserted from one end of the waveguide (3) and then passes through from the other end of the waveguide (3), and the first planing is performed, with the starting side in the Z direction as the left side, the end into which the planing blade (2) is inserted as the rear end of the waveguide (3), and the end through which the planing blade (2) passes as the front end of the waveguide (3), during this planing, the blade tip (2-3) on the left side of the planing blade (2) plans into the side edge of the inner hole surface adjacent to the left side of the inner hole surface to be processed currently, and the planing depth is the same as the predetermined planing depth of the adjacent inner hole surface, thereby completing the planing process of the inner hole surface to be processed currently and the corner of the adjacent inner hole surface; D. Retracting the waveguide rectangular inner hole planing tool: the waveguide rectangular inner hole planing tool moves downward in the Y direction to disengage the planing blade (2), and then the waveguide rectangular inner hole planing tool moves backward in the X direction to pull the waveguide rectangular inner hole planing tool out of the inner hole of the waveguide (3), and the planing blade (2) passes through the rear end of the waveguide (3); E. The waveguide rectangular inner hole planing tool moves upward along the Y direction, so that the planing blade (2) is reset to the processing position. At the same time, the front or rear waveguide rectangular inner hole planing tool moves rightward along the Z direction. Then, the waveguide rectangular inner hole planing tool moves forward along the X direction, so that the planing blade (2) is inserted from the rear end of the waveguide (3) and then passes through the front end of the waveguide (3), completing the second planing, and the area of ​​the second planing overlaps with the area of ​​the first planing; F. Repeat steps D and E until the planer blade (2) moves rightward along the Z direction to the rightmost side of the inner hole surface to be processed, and then perform the last planing, and the inner hole surface to be processed is planed from left to right. During this planing, the blade tip (2-3) on the right side of the planer blade (2) cuts into the side edge of the adjacent inner hole surface on the right side of the inner hole surface to be processed, and the cutting depth is the same as the predetermined planing depth of the adjacent inner hole surface, and the planing of the corner of the inner hole surface to be processed and the adjacent inner hole surface is completed; G. Rotate the waveguide (3) so that the other inner hole surface of the inner hole of the waveguide (3) is rotated to the processing position, and then repeat steps B to F to complete the planing processing of the other inner hole surface of the inner hole of the waveguide (3). In this step, if the corner of the inner hole surface to be processed has been planed by the tip (2-3) of the planer blade (2) in the previous processing step, when the inner hole surface to be processed is planed, the tip (2-3) of the planer blade (2) avoids the corner that has been planed; H. Repeat step G until all inner hole surfaces are planed.

2. The planing method for a rectangular inner hole of a waveguide according to claim 1, characterized in that: The included angle between the straight blade edge (2-1) and the side blade edge (2-2) is 50 to 65 degrees.

3. The planing method for a rectangular inner hole of a waveguide according to claim 1, characterized in that: The planer blade (2) is triangular.

4. The planing method for a rectangular inner hole of a waveguide according to claim 1, characterized in that: The rear end of the knife rod (1) is provided with a knife handle (4) for clamping.

5. The planing method for a rectangular inner hole of a waveguide according to claim 1, characterized in that: The planer blade (2) is fixed on the front end of the knife bar (1).

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