Drilling and chamfering device

Abstract

The utility model discloses a drilling and chamfering device which comprises a main shaft, an upper chamfering cutter, a lower chamfering cutter and a drill bit. The main shaft comprises a chuck and a rod part, the chuck is assembled on the drilling machine, and the rod part penetrates through the upper rose reamer and is detachably connected with the upper rose reamer. A left-hand thread hole is formed in the other end, away from the chuck, of the rod part, and a first stud and a second stud which are matched with the left-hand thread hole are arranged on the drill bit and the lower chamfering cutter respectively. According to the device, chamfers on the two sides of a drilled workpiece can be kept in a uniform shape, and the chamfering accuracy is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of drilling tools, in particular to a drilling and chamfering device. Background Art

[0002] In general machining, drilling and chamfering a workpiece are separate processes. A drill bit is assembled on one end of a drilling rig. Existing drill bits are typically integrated and feature a chamfering feature. After drilling a hole in a workpiece, one side of the hole can be chamfered directly. The drill bit is then removed and moved to the other side, using the drilled hole as a reference point, to chamfer the other side. This second chamfer requires manual realignment, making it difficult to maintain concentricity and affecting accuracy. Due to the integrated structure, the chamfer angle is also difficult to adjust, and each drill bit typically achieves the same chamfer angle, which doesn't meet machining requirements. Utility Model Content

[0003] In order to solve the above technical problems, the utility model provides a drilling and chamfering device.

[0004] The technical solution of the utility model is a drilling and chamfering device comprising a spindle, an upper chamfering cutter, a lower chamfering cutter, and a drill bit. The spindle comprises a chuck and a rod. The chuck is assembled to a drilling rig, and the rod passes through the upper chamfering cutter and is detachably connected to the upper chamfering cutter. A reverse threaded hole is defined at the end of the rod away from the chuck. The drill bit and the lower chamfering cutter are respectively provided with a first stud and a second stud that mate with the reverse threaded hole.

[0005] Furthermore, an integrated fixing ring is provided on the rod portion, a plurality of evenly spaced magnetic blocks are provided on the circumference of the fixing ring, and a groove is provided on the upper chamfering knife to match the magnetic blocks.

[0006] Furthermore, a plurality of positioning blocks with even intervals are provided on the circumference of one side of the fixing ring close to the upper chamfering knife, and a positioning groove cooperating with the positioning blocks is provided on the upper chamfering knife.

[0007] Furthermore, the side surfaces of the upper chamfering knife and the lower chamfering knife are both provided with a plurality of material guide grooves.

[0008] Furthermore, the drill bit includes a first stud, a second polygonal block and a drilling end, and the second polygonal block connects the first stud and the drilling end into one; the lower chamfering cutter includes a second stud, a third polygonal block and a chamfering end; the third polygonal block connects the chamfering end and the second stud into one; and a first polygonal block is provided on the rod.

[0009] Furthermore, a sleeved buffer pad is provided on one side of the second polygonal block close to the drill bit.

[0010] Compared with existing technologies, the present invention offers advantages in that the spindle is equipped with removable upper and lower chamfering cutters and a drill bit, allowing different drill bits to be matched with different upper and lower chamfering cutters, enabling the device to chamfer different types of angles on different hole diameters. After the spindle drives the drill bit to drill a hole, the drill bit can be removed and replaced with the upper and lower chamfering cutters. The other side of the hole can then be chamfered without removing the spindle. This maintains the concentricity of the chamfers on both sides of the hole, ensuring a consistent chamfer shape. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0012] Figure 1 This is a schematic diagram of the assembly of the main shaft and the drill bit of the utility model;

[0013] Figure 2 This is a schematic diagram of the assembly of the main shaft and the lower chamfering cutter of the utility model;

[0014] Figure 3 This is an exploded view of the main shaft and upper chamfering cutter of the utility model;

[0015] Figure 4 This is a schematic diagram of the drill bit of the utility model;

[0016] Figure 5 This is a schematic diagram of a lower chamfering cutter according to the present invention.

[0017] Among them: 1. Spindle; 2. Upper chamfering cutter; 3. Drill bit; 4. Lower chamfering cutter; 11. Chuck; 12. Rod; 13. Fixing ring; 121. First polygonal block; 122. Reverse threaded hole; 131. Positioning block; 132. Magnetic block; 21. Positioning groove; 22. Material guide groove; 31. First stud; 32. Second polygonal block; 33. Drilling end; 321. Buffer pad; 41. Second stud; 42. Third polygonal block; 43. Chamfering end. DETAILED DESCRIPTION

[0018] To make the purpose, technical solution, and advantages of the present invention more clear, the technical solution of the present invention will be described clearly and completely below. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments derived by persons of ordinary skill in the art without inventive effort are also within the scope of protection of the present invention.

[0019] The specific implementation of the present invention will be described below with reference to the accompanying drawings:

[0020] like Figures 1 to 5 As shown, a drilling and chamfering device includes a main shaft 1, an upper chamfering cutter 2, a lower chamfering cutter 4 and a drill bit 3. The main shaft 1 includes a chuck 11 and a rod 12. The chuck 11 is assembled on the drilling rig. The rod 12 passes through the upper chamfering cutter 2 and is detachably connected to the upper chamfering cutter 2. The other end of the rod 12 away from the chuck 11 is provided with a reverse threaded hole 122. The drill bit 3 and the lower chamfering cutter 4 are respectively provided with a first stud 31 and a second stud 41 that match the reverse threaded hole 122. The detachable upper chamfering cutter 2, the lower chamfering cutter 4 and the drill bit 3 facilitate the overall integration of different types of upper chamfering cutters 2, lower chamfering cutters 4 and the drill bit 3 to achieve different types of angles on holes of different sizes. The upper chamfering cutter 2 chamfers one side of the hole. After drilling the hole, the drill bit 3 is unscrewed and the lower chamfering cutter 4 is installed. The other side of the hole can be chamfered by the lower chamfering cutter 4 without pulling out the main shaft 1, so that the chamfers on both sides maintain the same concentricity.

[0021] The rod 12 is provided with an integrated fixing ring 13. Multiple evenly spaced magnetic blocks 132 are provided around the circumference of the fixing ring 13. The upper chamfering blade 2 is provided with grooves that mate with the magnetic blocks 132. The rod 12 passes through the upper chamfering blade 2. The magnetic blocks 132 mate with the grooves, allowing the spindle 1 and the upper chamfering blade 2 to be quickly and securely connected, making assembly easy. The fixing ring 13 is provided with multiple evenly spaced positioning blocks 131 around the circumference of the side closest to the upper chamfering blade 2. The upper chamfering blade 2 is provided with positioning grooves 21 that mate with the positioning blocks 131. The positioning blocks 131 are embedded in the positioning grooves 21, maintaining relative circumferential stability between the upper spindle 1 and the chamfering blade.

[0022] The side surfaces of the upper chamfering cutter 2 and the lower chamfering cutter 4 are both provided with a plurality of guide grooves 22. The guide grooves 22 can quickly discharge debris generated during the chamfering process, thereby accelerating the chamfering process. The drill bit 3 includes a first stud 31, a second polygonal block 32, and a drilling end 33. The second polygonal block 32 connects the first stud 31 and the drilling end 33 into one piece. The lower chamfering cutter 4 includes a second stud 41, a third polygonal block 42, and a chamfering end 43. The third polygonal block 42 connects the chamfering end 43 and the second stud 41 into one piece. A first polygonal block 121 is provided on the rod 12. By using a tool or manually clamping the first polygonal block 121 and the second polygonal block 32 or the first polygonal block 121 and the second polygonal block 32, the spindle 1 and the upper chamfering cutter 2, the lower chamfering cutter 4, and the drill bit 3 are caused to rotate relative to each other, thereby facilitating the quick installation or removal of the upper chamfering cutter 2, the lower chamfering cutter 4, and the drill bit 3 on the spindle 1. A cushion pad 321 is provided on the side of the second polygonal block 32 near the drill bit 3. During drilling, pressure is typically applied to the workpiece. After drilling through the workpiece, the operator can easily collide with the drill due to inertia, potentially posing a safety hazard or damaging the equipment. The cushion pad 321 creates a buffer zone between the equipment and the workpiece, reducing damage caused by rigid impact.

[0023] The working principle of the present invention is as follows: the chuck 11 of the spindle 1 is assembled onto a drill, the drill bit 3 is mounted on the other end, and the upper chamfering cutter 2 is installed on the spindle 1. The drill is started, and after the drill bit 3 creates a hole in the workpiece, the shank 12 passes through the hole. The drill bit 3 is removed from the spindle 1 and replaced with the upper and lower chamfering cutters 4. The drill is started again, and the upper and lower chamfering cutters 2 and 4 are operated separately to chamfer both sides of the hole.

[0024] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be an intermediate element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "upper," "lower," "left," "right," "front," "rear," and similar expressions used herein are for illustrative purposes only.

[0025] The above description is merely a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as above in terms of a preferred embodiment, it is not intended to limit the present invention. Any person skilled in the art can, without departing from the scope of the technical solution of the present invention, make some changes or modifications to equivalent embodiments using the technical contents disclosed above. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A drilling and chamfering device, characterized in that: The invention comprises a main shaft (1), an upper chamfering cutter (2), a lower chamfering cutter (4) and a drill bit (3); the main shaft (1) comprises a chuck (11) and a rod (12); the chuck (11) is assembled on a drilling machine; the rod (12) passes through the upper chamfering cutter (2) and is detachably connected to the upper chamfering cutter (2); the other end of the rod (12) away from the chuck (11) is provided with a reverse threaded hole (122); the drill bit (3) and the lower chamfering cutter (4) are respectively provided with a first stud (31) and a second stud (41) matching the reverse threaded hole (122).

2. The drilling and chamfering device according to claim 1, characterized in that: An integrated fixing ring (13) is provided on the rod portion (12), a plurality of evenly spaced magnetic blocks (132) are provided on the circumference of the fixing ring (13), and a groove matching the magnetic blocks (132) is provided on the upper chamfering knife (2).

3. The drilling and chamfering device according to claim 2, characterized in that: A plurality of evenly spaced positioning blocks (131) are provided on the circumference of a side of the fixing ring (13) close to the upper chamfering knife (2), and a positioning groove (21) is provided on the upper chamfering knife (2) to match the positioning blocks (131).

4. The drilling and chamfering device according to claim 1, characterized in that: The side surface of the upper chamfering knife (2) and the side surface of the lower chamfering knife (4) are both provided with a plurality of material guide grooves (22).

5. The drilling and chamfering device according to claim 1, characterized in that: The drill bit (3) comprises the first stud (31), a second polygonal block (32) and a drilling end (33), and the second polygonal block (32) connects the first stud (31) and the drilling end (33) into one body; the lower chamfering cutter (4) comprises the second stud (41), a third polygonal block (42) and a chamfering end (43); the third polygonal block (42) connects the chamfering end (43) and the second stud (41) into one body; and the rod (12) is provided with a first polygonal block (121).

6. The drilling and chamfering device according to claim 5, characterized in that: A sleeved buffer pad (321) is provided on one side of the second polygonal block (32) close to the drill bit (3).

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