Shockproof boring cutter for boring holes

Abstract

The shockproof boring cutter comprises a boring cutter body, an assembling structure, an adjusting structure and a locking structure, the boring cutter body comprises a cutter bar, a cutter holder fixedly installed at the upper end of the cutter bar, a first cutter head and a second cutter head, and the first cutter head and the second cutter head are arranged at the upper end of the cutter holder respectively. A first blade mounting groove and a second blade mounting groove are formed in the two ends of the first tool bit respectively, and a third blade mounting groove and a fourth blade mounting groove are formed in the two ends of the second tool bit respectively. Through the arrangement of the first tool bit and the second tool bit, after the first tool bit and the second tool bit are installed on the tool apron firstly, compared with the prior art, the device can machine holes of a workpiece in a successive layering mode through blades in the first blade installation groove, the second blade installation groove, the third blade installation groove and the fourth blade installation groove; and the cutting output of each blade can be reduced, and meanwhile, the cutting output of the whole cutter is increased, so that the problem of cutter vibration caused by large cutting output of the blades can be avoided.

Description

Technical Field

[0001] The utility model relates to the field of hole processing tools, in particular to a vibration-proof boring tool for boring holes. Background Art

[0002] A boring tool is a type of boring tool. It typically has a round shank, though square shanks are also available for larger workpieces. It is most commonly used for internal machining, hole enlargement, and profiling. A tool with one or two cutting sections is specifically designed for roughing, semi-finishing, or finishing existing holes. Boring tools can be used on boring machines, lathes, or milling machines.

[0003] To improve machining efficiency, traditional roughing boring tools are often adjusted to achieve a larger cutting volume. However, this larger cutting volume inevitably causes the boring tool blade to vibrate, resulting in cutter marks on the machined hole. This can significantly damage the blade, shortening its service life. Excessive cutter marks can also be difficult to remove during finish machining. To address these shortcomings, we propose a vibration-proof boring tool. Utility Model Content

[0004] The utility model aims to solve the shortcomings in the prior art and proposes a vibration-proof boring tool for boring holes.

[0005] In order to solve the problems existing in the prior art, the utility model adopts the following technical solution: a boring and vibration-proof boring tool, comprising:

[0006] A boring tool body, the boring tool body comprising a tool rod, a tool holder fixedly mounted on the upper end of the tool rod, and a first cutting head and a second cutting head respectively disposed on the upper ends of the tool holder, the first cutting head being provided with a first blade mounting groove and a second blade mounting groove at both ends, the second cutting head being provided with a third blade mounting groove and a fourth blade mounting groove at both ends, the inner walls of the first blade mounting groove, the second blade mounting groove, the third blade mounting groove, and the fourth blade mounting groove being fixedly connected with cutting blades by mounting bolts;

[0007] An assembly structure is provided at the upper end of the tool holder, comprising a sliding groove provided on the upper surface of the tool holder, two mounting seats slidably mounted on the inner wall of the sliding groove, bolt holes provided on the upper surfaces of the mounting seats, stepped holes provided on the upper surfaces of the first and second tool heads, and assembly bolts provided on the inner walls of the stepped holes;

[0008] An adjusting structure, which is arranged on the inner wall of the knife seat and is used to drive the mounting seat to move;

[0009] A locking structure is provided on the surface of the mounting seat and is used to lock the mounting seat.

[0010] Preferably, the distance from the end point of the blade on the first blade mounting slot to the center of the tool holder is R, the distance from the end point of the blade on the second blade mounting slot to the center of the tool holder is R+5MM, the distance from the end point of the blade on the third blade mounting slot to the center of the tool holder is R+10MM, and the distance from the end point of the blade on the fourth blade mounting slot to the center of the tool holder is R+15MM, and the value of R is greater than the tool radius of the tool holder.

[0011] Preferably, the distance from the inner bottom wall of the first blade mounting groove to the end face of the blade seat is N, the distance from the inner bottom wall of the second blade mounting groove to the end face of the blade seat is N+0.2MM, the distance from the inner bottom wall of the third blade mounting groove to the end face of the blade seat is N+0.4MM, and the distance from the inner bottom wall of the fourth blade mounting groove to the end face of the blade seat is N+0.6MM.

[0012] Preferably, the adjustment structure includes a mounting groove opened on the upper surface of the knife seat, an adjustment screw rotatably installed on the inner wall of the mounting groove, and two nut seats respectively threadedly connected to the surface of the adjustment screw, and the upper surfaces of the two nut seats are respectively fixedly connected to the lower surfaces of the two mounting seats.

[0013] Preferably, the surface of the adjusting screw is provided with two sections of threads, the thread rotation directions of the two sections of threads are opposite, and the two nut seats are respectively spirally driven with the two sections of threads.

[0014] Preferably, the front side of the adjusting screw extends to the outside of the knife seat and is provided with an adjusting knob.

[0015] Preferably, the shape of the blade is set to be diamond-shaped.

[0016] Preferably, the locking structure includes locking blocks fixedly mounted on the back sides of the two mounting seats, a strip groove provided on the upper surface of the locking block, a threaded hole provided on the upper surface of the knife seat, and a locking bolt threadedly connected to the inner wall of the threaded hole.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] 1. By setting the first cutter head and the second cutter head, after the first cutter head and the second cutter head are installed on the cutter seat, when boring, the blade in the first blade installation groove will first contact the workpiece to be processed, so that the workpiece can be bored. When the blade in the first blade installation groove enters the hole of the workpiece to be processed by 0.2MM, the blade in the second blade installation groove will contact the workpiece to be processed, so that the hole bored by the blade in the first blade installation groove can be expanded by 10MM. After that, the blade in the second blade installation groove enters the hole of the workpiece to be processed by 0.2MM, and the blade in the third blade installation groove It will contact the workpiece being processed, so that the hole can be enlarged by 10MM again. Then, after the blade in the third blade mounting slot enters the hole of the workpiece being processed by 0.2MM, the blade in the fourth blade mounting slot will contact the workpiece being processed again, so that the hole can continue to be enlarged by 10MM. Compared with the existing technology, the device uses the blades in the first blade mounting slot, the second blade mounting slot, the third blade mounting slot and the fourth blade mounting slot to process the hole of the workpiece in layers one by one, which can reduce the cutting amount of each blade while increasing the overall cutting amount of the tool, thereby avoiding the problem of tool vibration due to large blade cutting amount.

[0019] 2. By setting up an adjustment structure, turning the adjustment knob can drive the two nut seats closer to or farther away from each other, thereby changing the distance between the first cutting head and the second cutting head, thereby changing the distance from the blade to the center of the cutting seat, and then adjusting the distance between the first cutting head and the second cutting head according to the size of the hole being processed in the workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings described herein are intended to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are intended to explain the present invention and do not constitute undue limitations. In the accompanying drawings:

[0021] Figure 1 It is a three-dimensional schematic diagram of the utility model;

[0022] Figure 2 This is a three-dimensional schematic diagram of the mounting base of the utility model;

[0023] Figure 3 This is a three-dimensional schematic diagram of the second cutter head of the present invention;

[0024] Figure 4 It is a three-dimensional schematic diagram of the adjustment structure of the utility model;

[0025] Figure 5 A schematic top view of the utility model;

[0026] Figure 6 This is a schematic diagram of the blade's trajectory when the blade holder of the utility model rotates.

[0027] Serial numbers in the figure: 10 tool rod, 20 tool seat, 30 first tool head, 31 first blade mounting slot, 32 second blade mounting slot, 40 second tool head, 41 third blade mounting slot, 42 fourth blade mounting slot, 50 blade, 60 mounting seat, 61 bolt hole, 62 step hole, 63 assembly bolt, 70 adjusting screw, 71 nut seat, 72 adjusting knob, 80 locking block, 81 strip groove, 82 threaded hole, 83 locking bolt. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present invention.

[0029] See also Figure 1-6 The utility model provides a technical solution: a boring tool with anti-vibration function, comprising a boring tool body, an assembly structure, an adjustment structure and a locking structure.

[0030] See Figure 1 The boring tool body includes a tool rod 10 , a tool holder 20 fixedly mounted on the upper end of the tool rod 10 , and a first tool head 30 and a second tool head 40 respectively disposed on the upper end of the tool holder 20 .

[0031] See Figure 5 The first blade mounting groove 31 and the second blade mounting groove 32 are respectively formed at both ends of the first blade head 30, and the third blade mounting groove 41 and the fourth blade mounting groove 42 are respectively formed at both ends of the second blade head 40.

[0032] See Figure 1 The inner walls of the first blade mounting groove 31, the second blade mounting groove 32, the third blade mounting groove 41 and the fourth blade mounting groove 42 are all fixedly connected with blades 50 by mounting bolts, and the shape of the blade 50 is set to be diamond-shaped.

[0033] See Figure 1 and Figure 6 The distance from the end point of the blade 50 on the first blade mounting slot 31 to the center of the tool holder 20 is R, the distance from the end point of the blade 50 on the second blade mounting slot 32 to the center of the tool holder 20 is R+5MM, the distance from the end point of the blade 50 on the third blade mounting slot 41 to the center of the tool holder 20 is R+10MM, and the distance from the end point of the blade 50 on the fourth blade mounting slot 42 to the center of the tool holder 20 is R+15MM, and the value of R is greater than the tool radius of the tool holder 20.

[0034] The distance from the inner bottom wall of the first blade mounting groove 31 to the end face of the knife seat 20 is N, the distance from the inner bottom wall of the second blade mounting groove 32 to the end face of the knife seat 20 is N+0.2MM, the distance from the inner bottom wall of the third blade mounting groove 41 to the end face of the knife seat 20 is N+0.4MM, and the distance from the inner bottom wall of the fourth blade mounting groove 42 to the end face of the knife seat 20 is N+0.6MM.

[0035] When the blades are respectively installed on the inner walls of the first blade mounting groove 31, the second blade mounting groove 32, the third blade mounting groove 41 and the fourth blade mounting groove 42, the top of the blade 50 in the first blade mounting groove 31 is 0.2MM higher than the top of the blade 50 in the second blade mounting groove 32, the top of the blade 50 in the second blade mounting groove 32 is 0.2MM higher than the top of the blade 50 in the third blade mounting groove 41, and the top of the blade 50 in the third blade mounting groove 41 is 0.2MM higher than the top of the blade 50 in the fourth blade mounting groove 42.

[0036] See Figure 1-3 The assembly structure is arranged at the upper end of the tool holder 20, which includes a sliding groove opened on the upper surface of the tool holder 20, two mounting seats 60 respectively slidably installed on the inner wall of the sliding groove, a bolt hole 61 opened on the upper surface of the mounting seat 60, a step hole 62 opened on the upper surface of the first cutting head 30 and the second cutting head 40, and an assembly bolt 63 arranged on the inner wall of the step hole 62.

[0037] Place the first cutting head 30 and the second cutting head 40 on the two mounting seats 60 respectively, then insert the assembly bolt 63 into the step hole 62 and thread it into the bolt hole 61, so that the first cutting head 30 and the second cutting head 40 can be fixedly mounted on the two mounting seats 60 respectively using the assembly bolt 63.

[0038] See Figure 1 、 Figure 2 and Figure 4 The locking structure is provided on the surface of the mounting seat 60 for locking the mounting seat 60. The locking structure includes locking blocks 80 respectively fixedly mounted on the back surfaces of the two mounting seats 60, a strip groove 81 provided on the upper surface of the locking block 80, a threaded hole 82 provided on the upper surface of the tool holder 20, and a locking bolt 83 threadedly connected to the inner wall of the threaded hole 82. The locking bolt 83 is screwed into the threaded hole 82, so that the locking block 80 can be limited to prevent the mounting seat 60 from moving, thereby improving the stability of the first cutter head 30 and the second cutter head 40.

[0039] After the first cutter head 30 and the second cutter head 40 are installed on the cutter seat 20, when boring, the blade 50 in the first blade mounting groove 31 will first contact the workpiece to be processed, so that the workpiece to be processed can be bored. After the blade 50 in the first blade mounting groove 31 enters the hole of the workpiece to be processed by 0.2MM, the blade 50 in the second blade mounting groove 32 will contact the workpiece to be processed, so that the hole can be further enlarged by 10MM in the hole bored by the blade 50 in the first blade mounting groove 31. After that, the blade 50 in the second blade mounting groove 32 enters the hole of the workpiece to be processed by 0.2MM. At this time, the blade 50 in the third blade mounting groove 41 will contact the workpiece to be processed, so that the hole can be enlarged by 10MM again. Then, after the blade 50 in the third blade mounting groove 41 enters the hole of the workpiece to be processed by 0.2MM, the blade 50 in the fourth blade mounting groove 42 will contact the workpiece to be processed again, so that the hole can be further enlarged by 10MM.

[0040] Compared with the existing technology, the device uses the blades 50 in the first blade mounting groove 31, the second blade mounting groove 32, the third blade mounting groove 41 and the fourth blade mounting groove 42 to process the holes of the workpiece in layers one by one, which can reduce the cutting amount of each blade 50 while increasing the overall cutting amount of the tool, thereby avoiding the problem of tool vibration caused by the large cutting amount of the blades.

[0041] See Figure 2 and Figure 4 The adjusting structure is arranged on the inner wall of the tool holder 20, which is used to drive the mounting seat 60 to move. The adjusting structure includes a mounting groove provided on the upper surface of the tool holder 20, an adjusting screw 70 rotatably installed on the inner wall of the mounting groove, and two nut seats 71 respectively threadedly connected to the surface of the adjusting screw 70, and the upper surfaces of the two nut seats 71 are respectively fixedly connected to the lower surfaces of the two mounting seats 60. The surface of the adjusting screw 70 is provided with two sections of thread, and the thread rotation directions of the two sections of thread are opposite, and the two nut seats 71 are respectively spirally transmitted with the two sections of thread. The front side of the adjusting screw 70 extends to the outside of the tool holder 20 and is provided with an adjusting knob 72.

[0042] After loosening the locking bolt 83, the adjusting knob 72 is then turned to drive the two nut seats 71 to move closer to or away from each other, thereby driving the two mounting seats 60 to move synchronously with the two nut seats 71, thereby changing the distance between the first cutting head 30 and the second cutting head 40, thereby changing the distance from the blade 50 to the center of the cutting seat 20, and then adjusting the distance between the first cutting head 30 and the second cutting head 40 according to the size of the hole to be processed in the workpiece.

[0043] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited thereto. Any equivalent replacement or change made by a person skilled in the art based on the technical solution and concept of the present invention should be included in the protection scope of the present invention.

Claims

1. A boring tool with anti-vibration function, characterized in that: include: A boring tool body, the boring tool body comprising a tool rod (10), a tool holder (20) fixedly mounted on the upper end of the tool rod (10), and a first tool head (30) and a second tool head (40) respectively arranged on the upper end of the tool holder (20), the first tool head (30) having a first blade mounting groove (31) and a second blade mounting groove (32) respectively formed at both ends, the second tool head (40) having a third blade mounting groove (41) and a fourth blade mounting groove (42) respectively formed at both ends, and the inner walls of the first blade mounting groove (31), the second blade mounting groove (32), the third blade mounting groove (41) and the fourth blade mounting groove (42) are all fixedly connected with blades (50) via mounting bolts; An assembly structure is provided at the upper end of the tool holder (20), comprising a sliding groove provided on the upper surface of the tool holder (20), two mounting seats (60) slidably mounted on the inner wall of the sliding groove, a bolt hole (61) provided on the upper surface of the mounting seat (60), a step hole (62) provided on the upper surface of the first tool head (30) and the second tool head (40), and an assembly bolt (63) provided on the inner wall of the step hole (62); An adjustment structure, the adjustment structure being arranged on the inner wall of the knife seat (20) and being used to drive the mounting seat (60) to move; A locking structure is provided on the surface of the mounting seat (60) and is used to lock the mounting seat (60).

2. The anti-vibration boring tool for boring according to claim 1, characterized in that: The distance between the end point of the blade (50) on the first blade mounting slot (31) and the center of the knife seat (20) is R, the distance between the end point of the blade (50) on the second blade mounting slot (32) and the center of the knife seat (20) is R+5MM, the distance between the end point of the blade (50) on the third blade mounting slot (41) and the center of the knife seat (20) is R+10MM, and the distance between the end point of the blade (50) on the fourth blade mounting slot (42) and the center of the knife seat (20) is R+15MM, and the value of R is greater than the tool radius of the knife seat (20).

3. The anti-vibration boring tool for boring according to claim 1, characterized in that: The distance from the inner bottom wall of the first blade mounting groove (31) to the end face of the blade seat (20) is N, the distance from the inner bottom wall of the second blade mounting groove (32) to the end face of the blade seat (20) is N+0.2MM, the distance from the inner bottom wall of the third blade mounting groove (41) to the end face of the blade seat (20) is N+0.4MM, and the distance from the inner bottom wall of the fourth blade mounting groove (42) to the end face of the blade seat (20) is N+0.6MM.

4. The anti-vibration boring tool for boring according to claim 1, characterized in that: The adjustment structure comprises a mounting groove provided on the upper surface of the knife seat (20), an adjustment screw (70) rotatably mounted on the inner wall of the mounting groove, and two nut seats (71) respectively threadedly connected to the surfaces of the adjustment screw (70), and the upper surfaces of the two nut seats (71) are respectively fixedly connected to the lower surfaces of the two mounting seats (60).

5. The anti-vibration boring tool for boring according to claim 4, characterized in that: The surface of the adjusting screw (70) is provided with two sections of threads, the rotation directions of the two sections of threads are opposite, and the two nut seats (71) are respectively screw-driven with the two sections of threads.

6. The anti-vibration boring tool for boring according to claim 4, characterized in that: The front side of the adjusting screw (70) extends to the outside of the knife seat (20) and is provided with an adjusting knob (72).

7. The anti-vibration boring tool for boring according to claim 1, characterized in that: The shape of the blade (50) is set to be a diamond shape.

8. The anti-vibration boring tool for boring according to claim 1, characterized in that: The locking structure comprises locking blocks (80) fixedly mounted on opposite sides of the two mounting seats (60), a strip groove (81) provided on the upper surface of the locking block (80), a threaded hole (82) provided on the upper surface of the knife seat (20), and a locking bolt (83) threadedly connected to the inner wall of the threaded hole (82).

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