Chamfering cutter for deburring

Abstract

The utility model discloses a chamfering cutter for deburring, which comprises a cutter body, a cutter head and a chamfering blade, the cutter head is connected with the end of the cutter body, the chamfering blade is mounted on the cutter head, a fastening screw connected with the cutter head penetrates through the chamfering blade, a limiting plate is arranged on the cutter head, an inner backing plate is arranged on the inner surface of the limiting plate, and the chamfering blade is mounted on the inner backing plate. The limiting plate comprises a first connecting plate, a second connecting plate and a third connecting plate, the second connecting plate and the third connecting plate are connected with the first connecting plate, an outer base plate is arranged on the outer surface of the first connecting plate, and air conveying assemblies are arranged on the cutter body and the cutter head; the chamfering cutter is provided with a design for shielding a gap between the blade and the cutter head, the limiting plate limits the chamfering blade and shields the position of the gap between the chamfering blade and the cutter head at the same time, scrap accumulation is avoided, the limiting plate is pressed by the pressing block and the expanded expansion rubber tire, the limiting plate is installed stably, and the service life of the chamfering cutter is prolonged. And air ejected from the air blowing holes in the pressing block blows away chippings falling on the combined surface of the chamfering blade and the limiting plate, and the chippings are prevented from abrading the chamfering blade.

Description

Technical Field

[0001] The utility model belongs to the technical field of chamfering tool technology, in particular to a chamfering tool for removing burrs. Background Art

[0002] A chamfering tool is also called a chamfering drill, a scoring drill, or a chamfering device. It is a drill bit tool used for countersinking conical countersunk holes. It can be used to deburr, chamfer, and dig countersunk holes at the hole. The Chinese utility model patent application number CN202122251331.0 discloses a chamfering tool for a plug-welded threaded shank. The chamfering tool is a conventional tool used for trimming and chamfering.

[0003] During the long-term cutting use of the chamfering tool for deburring, debris accumulates in the gap between the blade and the cutter head. In addition, the tool will be subjected to slight vibrations, so the tool is prone to wear and breakage. During the deburring and trimming process, the chamfering tool has a design that does not cover the gap between the blade and the cutter head, which leads to the problem of debris wearing the blade. For this reason, the present application proposes a deburring chamfering tool. Utility Model Content

[0004] The utility model aims to provide a chamfering tool for deburring, so as to solve the problem that the chamfering tool proposed in the above background technology has no design to cover the gap between the blade and the cutter head.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a deburring chamfering tool comprises a tool body, a tool head and a chamfering blade, the tool head is connected to the end of the tool body, the chamfering blade is mounted on the tool head, and a firm screw connected to the tool head passes through the chamfering blade. A limiting plate is provided on the tool head, and an inner pad is provided on the inner surface of the limiting plate. The limiting plate comprises a first connecting plate, a second connecting plate and a third connecting plate, the second connecting plate and the third connecting plate are connected to the first connecting plate, and an outer pad is provided on the outer surface of the first connecting plate. An air delivery component is provided on the tool body and the tool head, and the air delivery component comprises a stabilizing ring, an air delivery rod and a pressure block. The stabilizing ring is sleeved on the outer side of the tool body, and the two ends of the air delivery rod are respectively connected to the stabilizing ring and the pressure block. An air blowing nozzle and an air charging nozzle are provided on the outer side of the end of the air delivery rod close to the stabilizing ring, an air delivery channel and an air charging channel are provided inside the air delivery rod, an expansion rubber tire is provided inside the pressure block, and an air blowing hole is opened on the pressure block.

[0006] Preferably, the surface of the cutter head is provided with a connected blade installation groove and a positioning groove, the surface of the cutter body is provided with a rectangular groove connected with the positioning groove, the chamfered blade is installed in the blade installation groove, and the air delivery rod is gap-matched with the positioning groove and the rectangular groove.

[0007] Preferably, a limiting groove is provided on the surface of the cutter head, the limiting plate and the limiting groove have a clearance fit, the limiting groove and the limiting plate have the same geometric shape, the thickness of the outer pad and the inner pad are matched, and the chamfered blade surface is consistent with the inner pad surface.

[0008] Preferably, one end of the pressing block is a curved portion, the pressing block matches the surface opposite to the limiting plate, the pressing block surface away from the limiting plate is flush with the surface on the same side of the gas delivery rod, and the outer surface of the gas delivery rod matches the outer surface curve of the cutter body.

[0009] Preferably, the blowing nozzle is communicated with the inflation channel, and the inflation nozzle is communicated with the air delivery channel.

[0010] Preferably, an air cavity C is provided in the pressing block, the blowing hole is communicated with the air cavity C, and the inflation channel is communicated with the air cavity C.

[0011] Preferably, an air cavity B is provided inside the expandable rubber tire, the air delivery channel is connected to the air cavity B, a concave expansion groove is provided on the surface of the pressing block facing the limiting plate, and the expandable rubber tire is installed inside the expansion groove.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] In the utility model, the chamfering knife is designed to block the gap between the blade and the knife head. The limiting plate limits the chamfering blade and blocks the gap between the chamfering blade and the knife head at the same time to avoid accumulation of debris. The pressing block and the expanded rubber tire press the limiting plate to ensure stable installation of the limiting plate. The gas ejected from the blowing hole on the pressing block blows away the debris that falls on the joint surface of the chamfering blade and the limiting plate to avoid the debris from wearing the chamfering blade. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the utility model;

[0015] Figure 2 For the utility model Figure 1 A schematic diagram of the enlarged structure of the middle part A;

[0016] Figure 3 It is a schematic diagram of the top view of the cutter head of the utility model;

[0017] Figure 4 It is a schematic diagram of the top view structure of the limiting plate of the utility model;

[0018] Figure 5 It is a cross-sectional structural schematic diagram of the limiting plate of the utility model;

[0019] Figure 6 It is a schematic cross-sectional structural diagram of the gas transmission rod of the utility model;

[0020] In the figure: 1. blade body; 2. blade head; 3. chamfered blade; 4. limiting plate; 5. stabilizing ring; 6. air delivery rod; 7. pressure block; 21. blade mounting groove; 22. limiting groove; 23. positioning groove; 31. fixing screw; 41. outer pad; 42. first connecting plate; 43. second connecting plate; 44. third connecting plate; 45. inner pad; 61. blowing nozzle; 62. inflation nozzle; 63. air delivery channel; 64. inflation channel; 71. expansion tire; 72. blowing hole. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] Example

[0023] See also Figures 1 to 6The utility model provides a technical solution: a deburring chamfering tool, comprising a tool body 1, a tool head 2 and a chamfering blade 3. The tool head 2 is connected to the end of the tool body 1, and the chamfering blade 3 is installed on the tool head 2. The chamfering blade 3 on the tool head 2 removes burrs, performs trimming and chamfering. The chamfering tool is a conventional tool for trimming and chamfering. The method of using is a conventional technical means, and this application will not be described in detail. A fixing screw 31 connected to the tool head 2 is passed through the chamfering blade 3. The fixing screw 31 fixes the chamfering blade 3 and the tool head 2. A limiting plate 4 is provided on the tool head 2, and the limiting plate 4 limits the chamfering blade 3. At the same time, the gap between the chamfering blade 3 and the cutter head 2 is blocked to avoid accumulation of debris. The inner surface of the limiting plate 4 is provided with an inner pad 45, and the chamfering blade 3 and the limiting plate 4 are separated by the inner pad 45, so that the chamfering blade 3 and the limiting plate 4 are flexibly connected to avoid wear of the chamfering blade 3. The limiting plate 4 includes a first connecting plate 42, a second connecting plate 43 and a third connecting plate 44. The second connecting plate 43 and the third connecting plate 44 are connected to the first connecting plate 42. The first connecting plate 42 is connected to the second connecting plate 43 and the third connecting plate 44 by a conventional method. The outer surface of the first connecting plate 42 is provided with an outer pad 41. The plate 41 is made of rubber material, and the outer pad 41 plays a buffering role, so that the limiting plate 4 is flexibly connected to the cutter head 2 to avoid wear; the cutter body 1 and the cutter head 2 are provided with an air delivery assembly, and the air delivery assembly includes a stabilizing ring 5, an air delivery rod 6 and a pressure block 7. The stabilizing ring 5 is sleeved on the outside of the cutter body 1, and the two ends of the air delivery rod 6 are respectively connected to the stabilizing ring 5 and the pressure block 7. The air delivery rod 6 is connected to the stabilizing ring 5 and the pressure block 7 by a conventional method. The outer side of the end of the air delivery rod 6 close to the stabilizing ring 5 is provided with a blowing nozzle 61 and an inflation nozzle 62, and the interior of the air delivery rod 6 is provided with an air delivery channel 63 and an inflation channel 64. The interior of the pressure block 7 An expansion rubber tire 71 is provided, and a blowing hole 72 is opened on the pressing block 7. The external inflation device inflates the inside of the air delivery rod 6 along the a direction, and the gas enters the air cavity B of the expansion rubber tire 71 after passing through the air delivery channel 63, so that the expansion rubber tire 71 expands. The expansion rubber tire 71 is connected with the limiting plate 4 by interference fit. The limiting plate 4 is firmly secured by the pressing block 7 and the expansion rubber tire 71. The external inflation device inflates the inside of the air delivery rod 6 along the b direction, and the gas enters the air cavity C of the pressing block 7 after passing through the inflation channel 64, and then is ejected from the blowing hole 72. The ejected gas blows away the debris that falls on the joint surface of the chamfering blade 3 and the limiting plate 4.

[0024] In this embodiment, a blade mounting groove 21 and a positioning groove 23 are connected to each other on the surface of the cutter head 2, and a rectangular groove connected to the positioning groove 23 is provided on the surface of the cutter body 1. The chamfering blade 3 is installed in the blade mounting groove 21, and the air supply rod 6 is matched with the positioning groove 23 and the rectangular groove gap. The chamfering blade 3 and the air supply rod 6 are accurately installed on the chamfering cutter.

[0025] In this embodiment, a limiting groove 22 is provided on the surface of the cutter head 2, and the limiting plate 4 is clearance-matched with the limiting groove 22. The limiting groove 22 has the same geometric shape as the limiting plate 4. The thickness of the outer pad 41 and the inner pad 45 are matched. The surface of the chamfered blade 3 is consistent with the surface of the inner pad 45. The outer pad 41 plays a buffering role, so that the limiting plate 4 is flexibly connected to the cutter head 2 to avoid wear.

[0026] In this embodiment, one end of the pressing block 7 is a bent portion, and the pressing block 7 is matched with the surface opposite to the limiting plate 4. The pressing block 7 presses the limiting plate 4, and the surface of the pressing block 7 facing away from the limiting plate 4 is flush with the surface on the same side of the gas delivery rod 6. The outer surface of the gas delivery rod 6 is matched with the curve of the outer surface of the cutter body 1, so as to prevent the gas delivery rod 6 from affecting the cutter head 2 from penetrating into the trimming hole.

[0027] In this embodiment, the blowing nozzle 61 is connected with the inflation channel 64, the inflation nozzle 62 is connected with the air supply channel 63, an air cavity C is provided in the pressing block 7, the blowing hole 72 is connected with the air cavity C, the inflation channel 64 is connected with the air cavity C, the external inflation device inflates the interior of the air supply rod 6 along the b direction, the gas enters the air cavity C of the pressing block 7 after passing through the inflation channel 64, and then is ejected from the blowing hole 72, the ejected gas blows away the debris falling on the combined surface of the chamfering blade 3 and the limiting plate 4, an air cavity B is provided inside the expanded rubber tire 71, the air supply channel 63 is connected with the air cavity B, the surface of the pressing block 7 facing the limiting plate 4 is provided with a concave expansion groove, the expanded rubber tire 71 is installed inside the expansion groove, the external inflation device inflates the interior of the air supply rod 6 along the a direction, the gas enters the air cavity B of the expanded rubber tire 71 after passing through the air supply channel 63, so that the expanded rubber tire 71 expands, the expanded rubber tire 71 is connected with the limiting plate 4 by interference fit, and the limiting plate 4 is firmly secured by the pressing block 7 and the expanded rubber tire 71.

[0028] The working principle and use process of this utility model:

[0029] When the chamfering blade 3 is installed on the cutter head 2, one side of the chamfering blade 3 is engaged with the limiting plate 4, and the outer pad 41 plays a buffering role, so that the limiting plate 4 and the cutter head 2 are flexibly connected to avoid wear;

[0030] The limiting plate 4 is engaged with the cutter head 2, and then the chamfering blade 3 and the cutter head 2 are fixedly fastened by the fixing screw 31. The limiting plate 4 limits the chamfering blade 3 and at the same time blocks the gap between the chamfering blade 3 and the cutter head 2 to avoid accumulation of debris.

[0031] The pressing block 7 and the gas delivery rod 6 are respectively installed on the cutter head 2 and the cutter body 1, and the pressing block 7 presses the limiting plate 4;

[0032] The external inflating device inflates the inside of the air delivery rod 6 along the direction a, and the gas enters the air cavity B of the expansion rubber tire 71 after passing through the air delivery channel 63, so that the expansion rubber tire 71 expands, and the expansion rubber tire 71 is connected with the limiting plate 4 by interference fit, and the limiting plate 4 is firmly secured by the pressing block 7 and the expansion rubber tire 71;

[0033] The external air-inflating device inflates the inside of the air delivery rod 6 along the direction b, and the air passes through the air-inflating channel 64 and enters the air cavity C of the pressing block 7, and then is ejected from the air-blowing hole 72. The ejected air blows away the debris that falls on the combined surface of the chamfering blade 3 and the limiting plate 4;

[0034] To summarize, the chamfering knife is designed to cover the gap between the blade and the cutter head 2. The limiting plate 4 limits the chamfering blade 3 and at the same time blocks the gap between the chamfering blade 3 and the cutter head 2 to avoid accumulation of debris. The pressing block 7 and the expanded rubber tire 71 press the limiting plate 4 to ensure stable installation of the limiting plate 4. The gas ejected from the blowing hole 72 on the pressing block 7 blows away the debris that falls on the joint surface of the chamfering blade 3 and the limiting plate 4 to prevent the debris from wearing the chamfering blade 3.

[0035] Although the embodiments of the present invention have been shown and described (see the above detailed description for details), it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A deburring chamfering tool, comprising a tool body (1), a tool head (2) and a chamfering blade (3), wherein the tool head (2) is connected to the end of the tool body (1), the chamfering blade (3) is mounted on the tool head (2), and a fixing screw (31) connected to the tool head (2) passes through the chamfering blade (3), characterized in that: The cutter head (2) is provided with a limiting plate (4), the inner surface of the limiting plate (4) is provided with an inner pad (45), the limiting plate (4) comprises a first connecting plate (42), a second connecting plate (43) and a third connecting plate (44), the second connecting plate (43) and the third connecting plate (44) are connected to the first connecting plate (42), the outer surface of the first connecting plate (42) is provided with an outer pad (41), the cutter body (1) and the cutter head (2) are provided with an air supply assembly, the air supply assembly comprises a stabilizing ring (5), an air supply The invention relates to a gas delivery rod (6) and a pressure block (7), wherein the stabilizing ring (5) is sleeved on the outer side of the blade body (1), the two ends of the gas delivery rod (6) are respectively connected to the stabilizing ring (5) and the pressure block (7), the outer side of the end of the gas delivery rod (6) close to the stabilizing ring (5) is provided with a blowing nozzle (61) and an inflation nozzle (62), the inside of the gas delivery rod (6) is provided with a gas delivery channel (63) and an inflation channel (64), the inside of the pressure block (7) is provided with an expansion rubber tire (71), and the pressure block (7) is provided with a blowing hole (72).

2. A deburring chamfering tool according to claim 1, characterized in that: The surface of the cutter head (2) is provided with a blade installation groove (21) and a positioning groove (23) which are connected, the surface of the cutter body (1) is provided with a rectangular groove which is connected with the positioning groove (23), the chamfered blade (3) is installed in the blade installation groove (21), and the air delivery rod (6) is clearance-matched with the positioning groove (23) and the rectangular groove.

3. A deburring chamfering tool according to claim 1, characterized in that: The surface of the cutter head (2) is provided with a limiting groove (22), the limiting plate (4) and the limiting groove (22) are clearance-matched, the limiting groove (22) and the limiting plate (4) have the same geometric shape, the thickness of the outer pad (41) and the inner pad (45) are matched, and the surface of the chamfered blade (3) is consistent with the surface of the inner pad (45).

4. A deburring chamfering tool according to claim 1, characterized in that: One end of the pressing block (7) is a curved portion, the pressing block (7) matches the surface opposite to the limiting plate (4), the surface of the pressing block (7) facing away from the limiting plate (4) is flush with the surface on the same side of the gas delivery rod (6), and the outer surface of the gas delivery rod (6) matches the curve of the outer surface of the blade body (1).

5. The deburring chamfering tool according to claim 1, characterized in that: The blowing nozzle (61) is in communication with the inflation channel (64), and the inflation nozzle (62) is in communication with the gas delivery channel (63).

6. A deburring chamfering tool according to claim 1, characterized in that: An air cavity C is provided in the pressing block (7), the air blowing hole (72) is in communication with the air cavity C, and the air charging channel (64) is in communication with the air cavity C.

7. A deburring chamfering tool according to claim 1, characterized in that: An air cavity B is provided inside the expansion rubber tire (71), and the air delivery channel (63) is connected to the air cavity B. A concave expansion groove is provided on the surface of the pressing block (7) facing the limiting plate (4), and the expansion rubber tire (71) is installed inside the expansion groove.

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