Split type reaming auxiliary tool for drill bit

Abstract

The utility model discloses a split type chambering auxiliary tool for a drill bit, which belongs to the technical field of drill bits, and comprises a connecting pipe, a connecting assembly, a chambering assembly, a gasket, a scale assembly, a clamp spring and a jackscrew, the connecting pipe comprises a pipe body, one side of the pipe body is connected with a connecting rod, a clamp spring groove is arranged outside the pipe body, a first thread groove is arranged in the pipe body, and a second thread groove is arranged in the pipe body. An inner threaded hole is formed in the pipe body, and the jackscrew is connected into the inner threaded hole in a threaded mode. According to the tool, the pipe body and the reamer bit can be assembled and connected through the threaded rod to form a split combined structure which is not prone to falling off, when the tool needs to be connected with external drill bits of different sizes, only the reamer bits matched with the different sizes need to be replaced, the adaptability of the tool is improved, the reamer bit is convenient to replace, and operation is convenient. And when the broaching part of the tool is damaged, the tool can be continuously used only by replacing the broaching drill bit, so that the use cost of the tool is reduced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to drill bit technical field, concretely relates to a drill bit split type reaming auxiliary tool. BACKGROUND

[0002] Drill bit is the tool of reaming hole on the hole position, is mainly used for reaming hole on the non -metal material hole position, and drill bit works through the rotary power of motor, and its basic structure includes cutting part and connecting part, cutting part is responsible for cutting reaming work piece on the hole position, and connecting part is connecting hole drill bit tail connecting rod part, and this part is provided with reaming structure, so as to form the nest groove on the original hole position while hole drill bit rotates.

[0003] The existing integrated drill bit can only be suitable for one specification of drill bit, the drill bit is inconvenient to replace, the adaptability is low, and when the reaming part of the drill bit is damaged, the whole drill bit needs to be replaced, thereby increasing the use cost, therefore, a drill bit split type reaming auxiliary tool is required to solve the above problems. UTILITY MODEL CONTENTS

[0004] The utility model discloses a kind of drill bit split type reaming auxiliary tools, to solve the problem raised in above background technology.

[0005] To achieve the above object, the utility model provides the following technical scheme: a kind of drill bit split type reaming auxiliary tool, including connecting pipe, connecting assembly, reaming assembly, gasket, scale assembly, snap spring and jackscrew, the connecting pipe includes tube body, one side of the tube body is connected with connecting rod, the tube body is externally provided with snap spring slot, the tube body is internally provided with first screw groove, the tube body is internally provided with internal thread hole, and the jackscrew is threadedly connected in internal thread hole;

[0006] The connecting assembly includes threaded rod, the first inner hole is internally provided in the threaded rod, and the through hole is internally provided in the threaded rod;

[0007] The reaming assembly includes reaming drill bit, the second screw groove is internally provided in the reaming drill bit, the two ends of the threaded rod are respectively threadedly connected in first screw groove and second screw groove, and the second inner hole is internally provided in the reaming drill bit;

[0008] The scale assembly includes metal cover, the metal cover is connected with rubber ring in, the metal cover and gasket are all set in tube body outer, the two sides of the gasket are respectively overlapped with tube body and metal cover, and the metal cover is internally provided with stepped groove;

[0009] The snap spring is arranged in snap spring slot, and the snap spring is overlapped with stepped groove.

[0010] As a preferred scheme, the connecting rod is hexagonal in cross section, and the inner threaded hole is communicated with the first threaded groove.

[0011] As a preferred scheme, the through hole is communicated with the first inner hole and is perpendicular to the first inner hole.

[0012] As a preferred scheme, the second inner hole is communicated with the second threaded groove.

[0013] As a preferred scheme, the reamer bit is tapered at the end away from the pipe body.

[0014] As a preferred scheme, the metal cover has four through grooves on the outer surface.

[0015] As a preferred scheme, the first inner hole is communicated with the second inner hole.

[0016] Compared with the prior art, the utility model has the beneficial effects that:

[0017] The tool can be assembled and connected with the pipe body and the reamer bit through the threaded rod to form a split combined structure which is not easy to fall off. When it is necessary to connect with different sizes of external drill bits, only the reamer bit matched with different sizes needs to be replaced, the adaptability of the tool is improved, the replacement operation of the reamer bit is convenient, and when the reaming part of the tool is damaged, only the reamer bit needs to be replaced, the tool can continue to be used, and the use cost of the tool is reduced.

[0018] The utility model discloses a metal cover is set up on the pipe body, and the metal cover is assembled with the tool through the spring, and the metal cover can be used as a ruler when the tool is assembled with the external drill bit, and the metal cover can limit the tool when the tool is in contact with the surface of the drilling object, so that the surface of the object can be drilled to form a high-quality groove, and the depth and balance of the reamer bit can be accurately controlled. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a structure schematic view of the utility model's front view solid;

[0020] Figure 2 It is a sectional structure schematic view of the utility model's front view solid;

[0021] Figure 3 It is a structure schematic view of the utility model's partial solid;

[0022] Figure 4 It is a structure schematic view of the utility model's metal cover side view solid;

[0023] Figure 5 It is the structure diagram of the side view of the expanding reamer of the utility model;

[0024] Figure 6 It is the structure diagram of the side view of the expanding reamer of the utility model;

[0025] In the figure: 1, connecting pipe; 11, pipe body; 12, connecting rod; 13, circlip groove; 14, first threaded groove; 15, internal thread hole; 2, connecting assembly; 21, threaded rod; 22, first inner hole; 23, through hole; 3, expanding assembly; 31, expanding reamer; 32, second threaded groove; 33, second inner hole; 4, gasket; 5, scale assembly; 51, metal cover; 52, rubber ring; 53, stepped groove; 6, circlip; 7, jackscrew. DETAILED DESCRIPTION

[0026] The utility model will be further described below in combination with examples.

[0027] The following examples are used to illustrate the utility model, but cannot be used to limit the protection scope of the utility model. The conditions in the examples can be further adjusted according to specific conditions, and simple improvements of the method of the utility model under the concept of the utility model all belong to the range required to be protected by the utility model.

[0028] Please refer to Figures 1-6 The utility model provides a kind of expanding auxiliary tool of split type drill bit, including connecting pipe 1, connecting assembly 2, expanding assembly 3, gasket 4, scale assembly 5, circlip 6 and jackscrew 7, connecting pipe 1 includes pipe body 11, pipe body 11 side is connected with connecting rod 12, circlip groove 13 is opened in pipe body 11 outside, first threaded groove 14 is opened in pipe body 11 inside, internal thread hole 15 is opened in pipe body 11 inside, jackscrew 7 is connected in internal thread hole 15 by screw thread, when the jackscrew 7 that is rotated in internal thread hole 15 passes through through hole 23 and the outer drill bit inserted in first inner hole 22 and second inner hole 33 abuts, jackscrew 7 will external drill bit be fixed in the tool;

[0029] Connecting assembly 2 includes threaded rod 21, first inner hole 22 is opened in threaded rod 21, through hole 23 is opened in threaded rod 21 inside;

[0030] Expanding assembly 3 includes expanding reamer 31, second threaded groove 32 is opened in expanding reamer 31, the both ends of threaded rod 21 are respectively connected in first threaded groove 14 and second threaded groove 32 by screw thread, second inner hole 33 is opened in expanding reamer 31 inside;

[0031] Scale assembly 5 includes metal cover 51, rubber ring 52 is connected in metal cover 51, by setting rubber ring 52, rubber ring 52 can provide additional protection;

[0032] The metal cover 51 and the gasket 4 are sleeved outside the pipe body 11, the gasket 4 is overlapped with the pipe body 11 and the metal cover 51 on both sides respectively, and the metal cover 51 is provided with a stepped groove 53 inside;

[0033] The clamping spring 6 is arranged in the clamping spring groove 13, the clamping spring 6 is overlapped with the stepped groove 53, and when the clamping ring arranged in the clamping spring groove 13 abuts against the metal cover 51, the clamping spring 6 and the clamping spring groove 13 are matched with each other to fix the metal cover 51 outside the pipe body 11 through the stepped groove 53.

[0034] The connecting rod 12 is provided in a hexagonal shape, the inner threaded hole 15 is communicated with the first threaded groove 14, the through hole 23 is communicated with the first inner hole 22, the through hole 23 is vertically arranged with the first inner hole 22, the second inner hole 33 is communicated with the second threaded groove 32, and the reamer bit 31 is provided in a tapered shape at an end away from the pipe body 11. The reamer bit 31 is provided in a tapered shape at one end, and the tapered part of the reamer bit 31 is designed in a three-face hollow candle shape. The candle shape is obliquely cut on the wall thickness of the pipe body 11, and is provided in a crescent arc shape. When the reamer bit rotates, a nest groove can be directly formed below the material surface, and the polishing is more smooth. The wood chips can be extruded out along the curled edge gap, and the cutting effect is good and the chip removal is fast. The hollow candle design can effectively protect the cutting edge during use, and the user can be protected from injury.

[0035] The metal cover 51 is provided with four through grooves on the outer surface. The through grooves correspond to the positions of the inner threaded hole 15, so that the operator can insert a tool for disassembling the jackscrew 7 into the operating part of the jackscrew 7 through the through grooves to rotate the jackscrew 7.

[0036] The first inner hole 22 is communicated with the second inner hole 33.

[0037] The working principle and use process of the utility model are as follows: when the tool needs to be used, one end of the threaded rod 21 is threadedly connected in the first threaded groove 14, so that the threaded rod 21 is assembled with the pipe body 11, the jackscrew 7 is screwed into the inner threaded hole 15, so that the bottom of the jackscrew 7 passes through the through hole 23;

[0038] Then the gasket 4 and the metal cover are sleeved outside the pipe body 11, the clamping spring 6 is moved into the clamping spring groove 13, and then the reamer bit 31 is moved. The reamer bit 31 drives the second threaded groove 32 to rotate on the other end of the threaded rod 21, so that the reamer bit 31 rotating outside the threaded rod 21 contacts the clamping spring 6 in the clamping spring groove 13. At this time, the other side of the clamping spring 6 abuts against the stepped groove 53 in the metal cover 51. At this time, the tool is assembled.

[0039] When the tool needs to be used, the hexagonal connecting rod 12 is connected with the electric drill, the connecting part of the external drill bit is inserted into the first inner hole 22 through the second inner hole 33, then the top screw 7 is rotated in the positive direction, the top screw 7 rotating in the internal thread hole 15 moves to the inside of the first inner hole 22 and abuts against the external drill bit inside the first inner hole 22, so that the external drill bit is firmly assembled with the drill bit;

[0040] Then the electric drill is moved to a suitable position, the electric drill is controlled to work, the working electric drill can drive the external drill bit to rotate through the tool, then the rotating drill bit performs drilling operation on the object, because the bottom of the metal outer cover 51 is just arranged at the middle position of the conical part of the counterbore drill bit 31, only the part of the rotating counterbore drill bit 31 located outside the metal outer cover 51 can perform counterbore operation on the hole drilled by the external drill bit, and the metal outer cover 51 can also play a role of fixing the balance point, so as to prevent the deformation or inclination of the counterbore hole position from occurring due to improper operation in the use process.

[0041] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the utility model, the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A split-type reaming auxiliary tool for drill bits, comprising a connecting tube (1), a connecting assembly (2), a reaming assembly (3), a gasket (4), a scale assembly (5), a retaining ring (6), and a set screw (7), characterized in that: The connecting pipe (1) includes a pipe body (11), a connecting rod (12) is connected to one side of the pipe body (11), a snap ring groove (13) is provided on the outside of the pipe body (11), a first threaded groove (14) is provided inside the pipe body (11), and an internal threaded hole (15) is provided inside the pipe body (11). The set screw (7) is threaded into the internal threaded hole (15). The connecting assembly (2) includes a threaded rod (21), which has a first inner hole (22) and a through hole (23). The hole enlarging assembly (3) includes a hole enlarging drill bit (31), which has a second threaded groove (32) inside. The two ends of the threaded rod (21) are respectively threaded into the first threaded groove (14) and the second threaded groove (32). The hole enlarging drill bit (31) has a second inner hole (33). The scale assembly (5) includes a metal cover (51), a rubber ring (52) is connected inside the metal cover (51), the metal cover (51) and the gasket (4) are both sleeved on the outside of the tube body (11), the two sides of the gasket (4) overlap with the tube body (11) and the metal cover (51) respectively, and a stepped groove (53) is opened inside the metal cover (51); The retaining ring (6) is located in the retaining ring groove (13), and the retaining ring (6) overlaps with the stepped groove (53).

2. The drill bit split-type reaming auxiliary tool according to claim 1, characterized in that: The cross-sectional shape of the connecting rod (12) is set to a regular hexagon, and the internal threaded hole (15) is connected to the first threaded groove (14).

3. The drill bit split-type reaming auxiliary tool according to claim 1, characterized in that: The through hole (23) is connected to the first inner hole (22), and the through hole (23) and the first inner hole (22) are arranged perpendicularly.

4. The drill bit split-type reaming auxiliary tool according to claim 1, characterized in that: The second inner hole (33) is connected to the second threaded groove (32).

5. A drill bit split-type reaming auxiliary tool according to claim 1, characterized in that: The end of the reaming drill bit (31) away from the tube body (11) is tapered.

6. A drill bit split-type reaming auxiliary tool according to claim 1, characterized in that: The outer surface of the metal cover (51) has four through slots.

7. A drill bit split-type reaming auxiliary tool according to claim 1, characterized in that: The first inner hole (22) is connected to the second inner hole (33).

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