Waveguide tube rectangular inner hole planing tool and planing device thereof

Abstract

The utility model relates to a waveguide tube rectangular inner hole planing tool and a planing device thereof. The planing tool for the rectangular inner hole of the waveguide tube comprises a tool bar and a planing tool, the planing tool is installed on the tool bar and comprises a tool body and a blade, the blade is located at the top of the front end face of the blade, and the rear tool face of the blade is divided into at least two sections including a front horizontal tool face and a downward inclined tool face behind the front section. The left side and the right side of the planer tool are inclined faces inclining inwards from top to bottom. The waveguide tube rectangular inner hole planing device comprises the planing tool, a tool clamping device and a workpiece clamping device. The method has the advantages that the inner hole face of the waveguide tube is planed through the planing tool, the machining efficiency is high, and corners can be effectively machined; the horizontal tool face of the planer tool can play a role in supporting the blade, the strength of the blade is guaranteed, planing vibration marks are avoided, in addition, the planer tool can also play a photophilic role, and the planed inner hole face can achieve the needed smooth finish, planeness and straightness.

Description

Technical Field

[0001] The utility model relates to the technical field of waveguide tube processing, in particular to a waveguide tube rectangular inner hole planing tool and a planing processing device thereof. Background Art

[0002] A waveguide is a hollow, smooth metal conduit. It is an essential component for electromagnetic wave transmission in the information and communications field. The smooth interior of a waveguide is required to minimize electromagnetic wave transmission losses.

[0003] Existing waveguides are usually copper alloy waveguides and aluminum alloy waveguides, which are usually processed by die forming, extrusion, machining, wire cutting and other methods.

[0004] Magnesium-lithium alloy is one-third lighter than aluminum alloy and has better electromagnetic shielding properties than copper alloy and aluminum alloy. Using magnesium-lithium alloy to prepare waveguide tubes can produce a waveguide tube with light weight and excellent electromagnetic shielding properties. However, due to the relatively soft texture of magnesium-lithium alloy, the waveguide tube blank obtained by extrusion molding will have vertical lines or marks, which can easily cause the smoothness, flatness and straightness of the inner hole surface of the waveguide tube to fail to meet the standards, resulting in a low yield.

[0005] The inner hole space of the waveguide is small, and conventional surface processing tools are difficult to enter, making processing difficult and inefficient, especially at the corners of the inner hole of the waveguide. Utility Model Content

[0006] The technical problem to be solved by the utility model is to provide a waveguide rectangular inner hole planing tool and a waveguide rectangular inner hole planing processing device, which can process the rectangular inner hole of a waveguide blank so that the smoothness, flatness and straightness of the inner hole surface of the waveguide can meet the standards.

[0007] The utility model solves the technical problem adopted by the technical solution: a waveguide rectangular inner hole planing tool, comprising a knife bar and a planer, the planer is mounted on the knife bar, the blade of the planer is perpendicular to the axis of the knife bar, the planer comprises a knife body and a blade fixed on the front side of the knife body, the blade is a PCD blade, the blade is used to provide a knife edge for planing processing, the knife edge is located at the top of the front end surface of the blade, the back knife surface of the knife edge is divided into at least two sections, including a horizontal knife surface of the front section and a downwardly inclined knife surface behind the front section, the left and right sides of the planer are inclined surfaces inclined inwardly from top to bottom, which are used to make the left and right sides of the knife edge of the planer protrude from the side surfaces on both sides of the planer.

[0008] In some embodiments, optionally, the inclined blade surface is divided into a downwardly inclined middle section inclined blade surface and a rear section inclined blade surface behind the front section horizontal blade surface, the inclination angle B of the rear section inclined blade surface is greater than or equal to the inclination angle A of the middle section inclined blade surface, the front and rear width H of the front section horizontal blade surface is 0.2 to 0.3 mm, and the thickness of the blade is greater than the front and rear width H of the horizontal blade surface.

[0009] In some embodiments, optionally, the inclination angle A of the middle section inclined blade surface is 2 to 3 degrees, and the inclination angle B of the rear section inclined blade surface is 7 to 45 degrees.

[0010] In some embodiments, optionally, the specific structure of the planer being mounted on the tool rod is as follows: a tool groove is provided on the tool rod, the planer is embedded in the tool groove and is fixed by a fixing block and a locking screw, the fixing block is also embedded in the tool groove, and the fixing block is located at the rear side of the planer, a slot hole is provided on the fixing block that passes through from top to bottom, a threaded hole is provided at the bottom of the tool groove, the locking screw passes through the slot hole and is screwed into the threaded hole to apply a downward locking force to the fixing block, the rear side of the fixing block has a first inclined surface that is inclined forward from top to bottom, and the rear side surface of the tool groove has a second inclined surface that cooperates with the first inclined surface, and is used to push the fixing block to move toward one side of the planer under the locking force of the locking screw to clamp and fix the planer;

[0011] Alternatively, the front side of the fixing block has a first inclined surface tilted backward from top to bottom, and the rear side of the planer has a second inclined surface matching the first inclined surface, which is used to push the planer toward the front side of the knife groove under the locking force of the locking screw to clamp and fix the planer.

[0012] A device for planing a rectangular inner hole of a waveguide tube comprises a frame, the aforementioned planing tool for the rectangular inner hole of the waveguide tube, a tool clamping device, and a workpiece clamping device. The tool clamping device and the workpiece clamping device are mounted on the frame. The rear end of a tool bar of the planing tool for the rectangular inner hole of the waveguide tube is clamped on the tool clamping device, with the axis of the tool bar as the X direction. The workpiece clamping device has a clamping mechanism for clamping the waveguide tube along the X direction. The workpiece clamping device has three feed directions (X, Y, and Z) for driving the waveguide tube to feed in the three feed directions.

[0013] Alternatively, the tool clamping device has three feeding directions of X, Y, and Z, and is used to drive the waveguide tube rectangular inner hole planing tool to feed in the three feeding directions of X, Y, and Z.

[0014] The beneficial effects of the utility model are as follows: the inner hole surface of the waveguide is planed by the planing tool, the processing efficiency is high, and the edges and corners can also be effectively processed;

[0015] The horizontal blade surface in front of the planer blade can support the blade, ensure the strength of the blade, avoid the planing vibration, and also play a photophilic role, so that the inner hole surface after planing can achieve the required smoothness, flatness and straightness.

[0016] The middle section of the back blade of the planer is inclined, which further ensures the strength of the planer while avoiding the planing processing surface, that is, the inner hole surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention is further described below with reference to the accompanying drawings and embodiments;

[0018] Figure 1 This is a schematic structural diagram of the rectangular inner hole planing tool for waveguide tubes of the present invention from a front view perspective;

[0019] Figure 2 This is a schematic diagram of the structure of the rectangular inner hole planing tool of the waveguide tube of the present invention from a three-dimensional perspective;

[0020] Figure 3 It is a partial cross-sectional view of the rectangular inner hole planing tool of the waveguide tube of the present invention;

[0021] Figure 4 This is a schematic structural diagram of the planer of the present utility model;

[0022] Figure 5 This is a schematic structural diagram of a device for planing a rectangular inner hole of a waveguide tube according to the present invention;

[0023] Figure 6 This is a schematic structural diagram of a planing tool for rectangular inner holes of a waveguide tube with a circular opening jacket according to the present invention, viewed from the front;

[0024] Figure 7 This is a schematic structural diagram of a waveguide rectangular inner hole planing tool with a circular opening jacket according to the present invention, viewed from a side perspective;

[0025] Figure 8 This is a schematic diagram of the start of step 3 of the planing process of the present invention;

[0026] Figure 9 for Figure 8 Schematic diagram of the side view;

[0027] Figure 10 This is a schematic diagram of the planing process of the present invention at the end of step 3;

[0028] In the figure, 1. tool bar, 2. planer, 2-1. blade, 2-2. tool body, 2-3. blade, 2-4. horizontal tool surface, 2-5. middle section inclined tool surface, 2-6. rear section inclined tool surface, 3. tool groove, 4. fixing block, 5. locking screw, 6. slotted hole, 7. threaded hole, 8. spindle chuck, 9. tool turret, 10. circular opening jacket, 11. waveguide tube, 12. waveguide tube rectangular inner hole planing tool. DETAILED DESCRIPTION

[0029] like Figures 1 to 4 As shown, a waveguide rectangular inner hole planing tool includes a tool bar 1 and a planer 2, the planer 2 is mounted on the tool bar 1, the blade 2-1 of the planer 2 is perpendicular to the axis of the tool bar 1, the planer 2 includes a tool body 2-2 and a blade 2-3 fixed on the front side of the tool body 2-2, the blade 2-3 is used to provide a blade 2-1 for planing processing, the blade 2-1 is located at the top of the front end surface of the blade 2-3, the back blade surface of the blade 2-1 is divided into at least two sections, including a horizontal blade surface 2-4 of the front section and a downwardly inclined blade surface behind the front section, the left and right sides of the planer 2 are inclined surfaces inclined inward from top to bottom, used to make the left and right sides of the blade 2-1 of the planer 2 protrude from the side surfaces on both sides of the planer 2.

[0030] The blade 2-3 is a PCD blade, i.e., a polycrystalline diamond blade, which is fixed to the blade body 2-2 by welding.

[0031] like Figure 4 As shown, the inclined blade surface is divided into a downwardly inclined middle section inclined blade surface 2-5 and a rear section inclined blade surface 2-6 behind the front section horizontal blade surface 2-4, the inclination angle B of the rear section inclined blade surface 2-6 is greater than or equal to the inclination angle A of the middle section inclined blade surface 2-5, the front and rear width H of the front section horizontal blade surface 2-4 is 0.2~0.3mm, and the thickness of the blade 2-3 is greater than the front and rear width H of the horizontal blade surface 2-4.

[0032] The inclination angle A of the middle section inclined blade surface 2-5 is 2 to 3 degrees, and the inclination angle B of the rear section inclined blade surface 2-6 is 7 to 45 degrees.

[0033] like Figure 3 As shown, the specific structure of the planer 2 installed on the arbor 1 is: the arbor 1 has a knife groove 3, the planer 2 is embedded in the knife groove 3, and is fixed by a fixing block 4 and a locking screw 5, the fixing block 4 is also embedded in the knife groove 3, and the fixing block 4 is located on the rear side of the planer 2, the fixing block 4 has a slot 6 running through from top to bottom, the bottom of the knife groove 3 has a threaded hole 7, the locking screw 5 passes through the slot 6 and is screwed into the threaded hole 7, applying a downward locking force to the fixing block 4, the rear side of the fixing block 4 has a first inclined surface inclined from top to bottom and forward, the rear side surface of the knife groove 3 has a second inclined surface matching the first inclined surface, which is used to push the fixing block 4 to move to the side of the planer 2 under the locking force of the locking screw 5, thereby clamping and fixing the planer 2.

[0034] Of course, it can also be that: the front side of the fixing block 4 has a first inclined surface tilted backward from top to bottom, and the rear side surface of the planer 2 has a second inclined surface matching the first inclined surface, which is used to push the planer 2 toward the front side surface of the knife groove 3 under the locking force of the locking screw 5, thereby clamping and fixing the planer 2.

[0035] like Figures 5-10 As shown, a waveguide tube rectangular inner hole planing processing device includes a frame, the above-mentioned waveguide tube rectangular inner hole planing tool 12, a tool clamping device and a workpiece clamping device, the tool clamping device and the workpiece clamping device are installed on the frame, the rear end of the tool rod 1 of the waveguide tube rectangular inner hole planing tool 12 is clamped on the tool clamping device, and the axis of the tool rod 1 is taken as the X direction. The workpiece clamping device has a clamping mechanism for clamping the waveguide tube 11 along the X direction. The workpiece clamping device has three feeding directions of X, Y, and Z, and is used to drive the waveguide tube 11 to feed in the three feeding directions of X, Y, and Z.

[0036] A specially manufactured machine can be used to clamp the waveguide tube rectangular inner hole planing tool 12 to form the waveguide tube rectangular inner hole planing processing device of this embodiment, or a conventional multi-axis CNC machine tool can be used, and then equipped with a clamping mechanism of the waveguide tube 11 and the waveguide tube rectangular inner hole planing tool 12 to form the waveguide tube rectangular inner hole planing processing device of this embodiment.

[0037] The following describes the process of planing the rectangular inner hole of a waveguide tube by taking an example of using a conventional multi-axis CNC machine tool and then matching it with a clamping mechanism of the waveguide tube 11 to form the waveguide tube rectangular inner hole planing processing device of this embodiment.

[0038] like Figure 5 As shown, the waveguide tube rectangular inner hole planing tool 12 is clamped on the spindle chuck 8 of the multi-axis CNC machine tool through its rear end. The clamping mechanism is installed on the side of the turret 9 of the multi-axis CNC machine tool. The waveguide tube 11 is clamped on the turret 9 through the clamping mechanism. The spindle chuck 8 of the multi-axis CNC machine tool is the tool clamping device, and the workpiece clamping device is the turret 9 equipped with the clamping mechanism.

[0039] like Figure 6 and 7 As shown, in this embodiment, the tool rod 1 is rectangular. In order to facilitate the clamping of the spindle chuck 8, a circular open sleeve 10 is put on the rear end of the tool rod 1. The opening of the circular open sleeve 10 allows the circular open sleeve 10 to clamp the tool rod 1 inserted into its rectangular inner hole under the clamping force of the spindle chuck 8, or the tool rod 1 is rectangular as a whole, but the rear end is circular, which is convenient for clamping the spindle chuck 8.

[0040] The planing process of the rectangular inner hole of the waveguide is as follows:

[0041] 1. Complete the clamping of the waveguide tube 11 and the waveguide rectangular inner hole planing tool 12, and the blade 2-1 of the planer 2 is parallel to the inner hole surface to be processed;

[0042] 2. The turret 9 drives the waveguide 11 to move to the initial position;

[0043] 3. If Figure 8 and 9 As shown, the turret 9 drives the waveguide tube 11 to move horizontally backward in the X direction, so that the waveguide tube rectangular inner hole planing tool 12 is inserted into the inner hole of the waveguide tube 11 from one side of the inner hole, such as the left side, and the inner hole surface of the waveguide tube 11 is planed from the left side. When the planer 2 passes through the front end of the waveguide tube 11, one planing is completed, as shown in FIG. Figure 10 As shown, in Figures 8-10 In the figure, the turret 9 and the spindle chuck 8 are omitted;

[0044] 4. Retract the waveguide rectangular inner hole planing tool 12: The turret 9 drives the waveguide 11 upward in the Y direction to disengage the planer 2, and then the turret 9 drives the waveguide 11 forward in the X direction to pull the waveguide rectangular inner hole planing tool 12 out of the inner hole of the waveguide 11, and the planer 2 passes through the rear end of the waveguide 11;

[0045] 5. The turret 9 drives the waveguide tube 11 downward in the Y direction, so that the planer 2 is reset to the processing position in the Y direction. Then, the turret 9 drives the waveguide tube 11 to the left in the Z direction, so that the planer 2 moves longitudinally to the right relative to the inner hole surface. Then, the turret 9 drives the waveguide tube 11 to move horizontally backward in the X direction, so that the waveguide rectangular inner hole planing tool 12 is inserted into the inner hole of the waveguide tube 11. When the planer 2 passes through the front end of the waveguide tube 11, the second planing is completed. The second planing area overlaps with the first planing area.

[0046] 6. Repeat steps 4 and 5 until the planer 2 moves longitudinally to the rightmost side of the inner hole surface. After this planing, the inner hole surface is planed from left to right to achieve the required smoothness, flatness, and straightness of the inner hole surface.

[0047] 7. Loosen the waveguide tube 11 and rotate it 90 degrees. Then clamp the waveguide tube 11 again and repeat steps 3 to 6 to complete the planing of another inner hole surface of the inner hole of the waveguide tube 11. Repeat the above steps until all inner hole surfaces are planed.

[0048] Of course, it can also be: the waveguide tube 11 is stationary, and the waveguide tube rectangular inner hole planing tool 12 moves to perform planing processing. The tool clamping device has three feeding directions of X, Y, and Z, which is used to drive the waveguide tube rectangular inner hole planing tool 12 to feed in the three feeding directions of X, Y, and Z. For example, the tool clamping device is a turret 9 of a multi-axis CNC machine tool with a matching clamping mechanism, the waveguide tube rectangular inner hole planing tool 12 is clamped on the turret 9, and the workpiece clamping device is a spindle chuck 8 of a multi-axis CNC machine tool with a matching clamping mechanism.

Claims

1. A waveguide rectangular inner hole planing tool, characterized by: The planer (2) comprises a cutter bar (1) and a planer (2), wherein the planer (2) is mounted on the cutter bar (1), a blade (2-1) of the planer (2) and an axis of the cutter bar (1), the planer (2) comprising a cutter body (2-2) and a blade (2-3) fixed on the front side of the cutter body (2-2), the blade (2-3) being a PCD blade, the blade (2-3) being used to provide a blade (2-1) for planing processing, the blade (2-1) being located at the top of the front end surface of the blade (2-3), the back surface of the blade (2-1) being divided into at least two sections, comprising a horizontal blade surface (2-4) of the front section and a downwardly inclined blade surface behind the front section, the left and right sides of the planer (2) being inclined surfaces inclined inwardly from top to bottom, so as to make the left and right sides of the blade (2-1) of the planer (2) protrude from the side surfaces of both sides of the planer (2).

2. The waveguide rectangular inner hole planing tool according to claim 1, characterized in that: The inclined blade surface is divided into a downwardly inclined middle blade surface (2-5) and a rear inclined blade surface (2-6) behind the front horizontal blade surface (2-4); an inclination angle B of the rear inclined blade surface (2-6) is greater than or equal to an inclination angle A of the middle inclined blade surface (2-5); a front-to-back width H of the front horizontal blade surface (2-4) is 0.2 to 0.3 mm; and a thickness of the blade (2-3) is greater than the front-to-back width H of the horizontal blade surface (2-4).

3. The waveguide rectangular inner hole planing tool according to claim 2, characterized in that: The inclination angle A of the middle section inclined blade surface (2-5) is 2 to 3 degrees, and the inclination angle B of the rear section inclined blade surface (2-6) is 7 to 45 degrees.

4. The waveguide rectangular inner hole planing tool according to claim 1, characterized in that: The specific structure of the planer (2) being installed on the knife bar (1) is as follows: the knife bar (1) is provided with a knife groove (3), the planer (2) is embedded in the knife groove (3) and is fixed by a fixing block (4) and a locking screw (5), the fixing block (4) is also embedded in the knife groove (3), and the fixing block (4) is located at the rear side of the planer (2), the fixing block (4) is provided with a slot hole (6) passing through from top to bottom, the bottom of the knife groove (3) is provided with a threaded hole (7), the locking screw (5) passes through the slot hole (6) and is screwed into the threaded hole (7), applying a downward locking force to the fixing block (4), the rear side of the fixing block (4) is provided with a first inclined surface inclined forward from top to bottom, the rear side surface of the knife groove (3) is provided with a second inclined surface matched with the first inclined surface, and is used to push the fixing block (4) to move toward one side of the planer (2) under the locking force of the locking screw (5), so as to clamp and fix the planer (2); Alternatively, the front side of the fixing block (4) has a first inclined surface that tilts backward from top to bottom, and the rear side surface of the planer (2) has a second inclined surface that matches the first inclined surface, which is used to push the planer (2) toward the front side surface of the knife groove (3) under the locking force of the locking screw (5) to clamp and fix the planer (2).

5. A device for planing a rectangular inner hole of a waveguide tube, characterized by: It comprises a frame, a waveguide tube rectangular inner hole planing tool (12) as claimed in claim 1, a tool clamping device and a workpiece clamping device, wherein the tool clamping device and the workpiece clamping device are mounted on the frame, the rear end of the tool bar (1) of the waveguide tube rectangular inner hole planing tool (12) is clamped on the tool clamping device, with the axis of the tool bar (1) as the X direction, the workpiece clamping device has a clamping mechanism for clamping the waveguide tube (11) along the X direction, and the workpiece clamping device has three feeding directions of X, Y and Z, for driving the waveguide tube (11) to feed in the three feeding directions of X, Y and Z; Alternatively, the tool clamping device has three feeding directions of X, Y and Z, and is used to drive the waveguide tube rectangular inner hole planing tool (12) to feed in the three feeding directions of X, Y and Z.

Images