CN110548903B - Combined multi-stage drill bit device - Google Patents
Combined multi-stage drill bit device Download PDFInfo
- Publication number
- CN110548903B CN110548903B CN201910636438.1A CN201910636438A CN110548903B CN 110548903 B CN110548903 B CN 110548903B CN 201910636438 A CN201910636438 A CN 201910636438A CN 110548903 B CN110548903 B CN 110548903B
- Authority
- CN
- China
- Prior art keywords
- drill
- stage
- primary
- groove
- hole
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000007789 sealing Methods 0.000 claims abstract description 101
- 230000000670 limiting effect Effects 0.000 claims description 55
- 238000005553 drilling Methods 0.000 claims description 28
- 238000005520 cutting process Methods 0.000 abstract description 27
- 238000005498 polishing Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 238000004026 adhesive bonding Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B51/00—Tools for drilling machines
- B23B51/009—Stepped drills
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B51/00—Tools for drilling machines
- B23B51/08—Drills combined with tool parts or tools for performing additional working
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Processing Of Stones Or Stones Resemblance Materials (AREA)
Abstract
A combined multi-stage drill bit device comprises a drill rod, a first-stage drill, a second-stage drill, a third-stage drill sleeve, a connecting drill, a sealing cover drill and a positioning bolt; the primary drill is arranged at the top end of the drill rod and is fixed with the drill rod through threads; the secondary drill is arranged at the top section of the drill rod, so that the thread fixation of the secondary drill and the drill rod is realized; the third-stage drill bushing is arranged at the bottom section of the drill rod and at the bottom end of the second-stage drill, so that the third-stage drill bushing and the drill rod are fixed in a threaded manner; the connecting drill realizes the fixation of the first-level drill and the second-level drill and the fixation of the second-level drill and the third-level drill sleeve through clamping; the sealing cover drill is arranged at the bottom end of the third-stage drill bushing, penetrates through the sealing cover drill positioning hole through the positioning bolt and extends into the drill rod positioning hole, and the sealing cover drill, the third-stage drill bushing and the drill rod are fixed through threaded connection. The drill bit has long service life, is convenient to disassemble and replace parts, can form and cut a stepped hole at one time, and has smooth and attractive cutting hole diameter.
Description
Technical Field
The invention relates to the field of drill bit tools, in particular to a combined multi-stage drill bit device.
Background
The main structural forms of the drill bit are twist drill, flat drill, center drill, deep hole drill and trepanning drill. The hole is opened for the step hole, the common drill bit needs to be repeatedly opened for many times, and the machining process is complex. There are several forms of combination drill bits available in the prior art that allow stepped bore drilling or direct drilling of larger bore diameters. Combined drill bit among the prior art structural style is complicated, it is fixed to peg graft through the drill bit form of many levels, at the in-process of drilling, bore and get the aperture, then carry out successive layer reaming through the drill bit of diameter gradual increase, realize the trompil size, the drill bit of every layer combination is direct to contact with the object, it is serious easily to lead to drill bit tool bit portion wearing and tearing at reaming in-process, and when boring and getting the in-process and receiving side direction external force influence or application of force inequality, easily lead to drill bit tool bit portion to damage, influence the life of tool bit, need often to change the drill bit, use cost is improved, economic nature is low
Disclosure of Invention
In order to solve the existing problems, the invention discloses a combined multi-stage drill bit device, which has the following specific technical scheme: a combined multi-stage drill bit device is characterized by comprising a drill rod, a first-stage drill, a second-stage drill, a third-stage drill sleeve, a connecting drill, a sealing cover drill and a positioning bolt;
the drill rod is in a round rod shape, the top section of the drill rod is in a twist drill shape, a drill rod limiting ring is arranged on the outer wall of the top section of the drill rod in the circumferential direction, and the drill rod limiting ring is fixedly connected with the drill rod and is in an integrated structure; the outer wall of the top section of the drill rod is threaded in the circumferential direction to form a drill rod external thread, and the drill rod external thread is arranged at the bottom end of the drill rod limiting ring; the side wall of the bottom end of the drill rod is in a blind hole shape to form a drill rod positioning hole, and the inner wall of the drill rod positioning hole is in an internal thread shape;
the primary drill comprises a primary drill sleeve and a primary drill barrel, primary drill teeth are circumferentially arranged on the outer ring of the top end of the primary drill sleeve, the primary drill teeth are vertically and fixedly connected with the primary drill sleeve, and the primary drill teeth are in a sawtooth shape; the center of the upper surface of the primary drill bushing is of a groove-shaped structure to form a primary drill top groove, and the center bottom of the primary drill top groove is of a groove-shaped structure to form a primary drill limiting groove; the outer side wall of the primary drill bushing is provided with a primary drill fixture block, and the primary drill fixture block is fixedly connected with the primary drill bushing; the primary drill barrel is arranged at the bottom end of the primary drill sleeve and is vertically and fixedly connected with the primary drill sleeve, the center of the primary drill barrel is in a through hole structure and penetrates through the center of the primary drill sleeve to form a primary drill through hole, and the inner side wall of the primary drill through hole is in a thread structure to form primary drill internal threads; the primary drill is arranged at the top end of the drill rod, the drill rod limiting ring is embedded into the primary drill limiting groove, and the primary drill is fixed with the drill rod through matching of primary drill internal threads and drill rod external threads;
the secondary drill comprises a secondary drill sleeve and a secondary drill barrel; the outer ring of the top end of the secondary drill bushing is circumferentially provided with secondary drill teeth, the secondary drill teeth are vertically and fixedly connected with the secondary drill bushing, and the secondary drill teeth are in a sawtooth shape; the center of the upper surface of the secondary drill bushing is of a groove-shaped structure to form a secondary drill top groove, and the center bottom of the secondary drill top groove is of a groove-shaped structure to form a secondary drill limiting groove; a secondary drill positioning block is arranged on the bottom surface of the secondary drill top groove and is fixedly connected with the secondary drill bushing to form an integrated structure; the outer side wall of the secondary drill bushing is provided with a secondary drill fixture block, and the secondary drill fixture block is fixedly connected with the secondary drill bushing; the secondary drill cylinder is arranged at the bottom end of the secondary drill sleeve and is vertically and fixedly connected with the secondary drill sleeve, the center of the secondary drill cylinder is in a through hole-shaped structure and penetrates through the center of the secondary drill sleeve to form a secondary drill through hole, and the inner side wall of the secondary drill through hole is in a thread-shaped structure to form a secondary drill internal thread; the secondary drill is arranged at the top section of the drill rod and at the bottom end of the primary drill, the primary drill barrel is inserted into the secondary drill limiting groove, and the secondary drill is fixed with the drill rod by matching the internal thread of the secondary drill with the external thread of the drill rod;
three-stage drill teeth are circumferentially arranged on the outer ring at the top end of the three-stage drill bushing and are vertically and fixedly connected with the three-stage drill bushing, and the three-stage drill teeth are in a sawtooth shape; the center of the upper surface of the three-stage drill bushing is of a groove-shaped structure to form a three-stage drill top groove, and the center bottom of the three-stage drill top groove is of a groove-shaped structure to form a three-stage drill limiting groove; the secondary drill positioning block is arranged on the outer side of the tertiary drill limiting groove, a tertiary drill positioning block is arranged on the bottom surface of the tertiary drill top groove, and the tertiary drill positioning block is fixedly connected with the tertiary drill sleeve and is of an integrated structure; a tertiary drilling fixture block is arranged on the outer side wall of the tertiary drilling sleeve and is fixedly connected with the tertiary drilling sleeve; the center of the third-stage drill bushing is in a through hole-shaped structure to form a third-stage drill through hole, and the inner side wall of the third-stage drill through hole is in a thread-shaped structure to form a third-stage drill internal thread; the three-stage drill bushing is arranged at the top section of the drill rod and at the bottom end of the second-stage drill, the second-stage drill cylinder is inserted into the three-stage drill limiting groove, and the three-stage drill bushing and the drill rod are fixed by matching the internal thread of the third-stage drill with the external thread of the drill rod;
the connecting drill is of a cylindrical structure, and the top end of the outer side wall of the connecting drill is of a convex-grain-shaped structure in the circumferential direction to form a connecting drill convex grain; the center of the connecting drill is in a through hole-shaped structure to form a connecting drill through hole; the side wall of the connecting drill through hole is provided with a connecting drill groove which is obliquely arranged; the bottom surface of the connecting drill is of a groove-shaped structure in the circumferential direction to form a connecting drill bottom groove; the connecting drill is arranged between the first-stage drill and the second-stage drill and between the second-stage drill and the third-stage drill sleeve; the primary drill and the secondary drill and the tertiary drill sleeve are fixed through clamping;
the sealing drill comprises a sealing drill sleeve and a sealing drill cylinder; the top end of the outer side wall of the sealing drill sleeve is of a convex-thread structure in the circumferential direction to form a sealing drill convex thread; the center of the top surface of the sealing drill sleeve is of a groove-shaped structure to form a sealing drill top groove, a sealing drill groove is formed in the side wall of the sealing drill top groove, and the sealing drill groove is obliquely arranged; the sealing cover drill cylinder is arranged on the bottom surface of the sealing cover drill sleeve and is vertically and fixedly connected with the sealing cover drill sleeve, the center of the sealing cover drill cylinder is in a through hole shape to form a sealing cover drill through hole, and the sealing cover drill through hole penetrates through the sealing cover drill sleeve; the side wall of the sealing cover drill cylinder is in a through hole shape to form a sealing cover drill positioning hole; the sealing cover drill is arranged at the bottom end of the tertiary drill bushing, the tertiary drill clamping block is embedded into the sealing cover drill groove, the tertiary drill bushing and the sealing cover drill are fixed, the positioning bolt penetrates through the sealing cover drill positioning hole and extends into the drill rod positioning hole, and the sealing cover drill, the tertiary drill bushing and the drill rod are fixed through threaded connection.
Furthermore, the first-stage drill bushing is of a round table-shaped structure and is of a structure with a wide upper part and a narrow lower part.
Furthermore, the primary drill top groove is of a round table-shaped structure and is of a structure with a wide upper part and a narrow lower part.
Furthermore, the shape and the size of the first-stage drill limiting groove are matched with those of the drill rod limiting ring.
Furthermore, the number of the first-stage drill clamping blocks is four, and the first-stage drill clamping blocks are circumferentially arranged on the side wall of the first-stage drill bushing and symmetrically arranged.
Furthermore, the secondary drill positioning block is of a circular ring-shaped structure and is coaxially arranged with the secondary drill through hole.
Furthermore, the top end and the bottom end of the side wall of the connecting drill are both in a chamfer structure.
Furthermore, the top end of the connecting drill through hole is in a round table-shaped structure and is in a structure with a wide upper part and a narrow lower part; the bottom end of the connecting drill through hole is of a cylindrical structure.
Furthermore, the number of the connecting drill grooves arranged in each connecting drill through hole is four, and each connecting drill groove is circumferentially arranged in the connecting drill through hole and symmetrically arranged; the shape and the size of each connecting drill groove are respectively adapted to the shape and the size of the corresponding primary drill clamping block and the corresponding secondary drill clamping block.
Furthermore, the connecting drill bottom groove is of a circular ring-shaped structure and is coaxially arranged with the connecting drill through hole.
Furthermore, the top groove of the sealing cover drill is in a round table-shaped structure, and the shape and the size of the top groove of the sealing cover drill are matched with those of the bottom surface of the three-level drill bushing.
The structural principle of the invention is as follows:
when the drill pipe fixing device is installed, a primary drill is sleeved from the bottom end of a drill pipe, a drill pipe limiting ring is embedded into a primary drill limiting groove, and the primary drill is fixed with the drill pipe through matching of primary drill internal threads and drill pipe external threads; sleeving a connecting drill into the bottom end of the primary drill, and embedding the primary drill clamping block into the groove of the connecting drill; then, a secondary drill is sleeved from the bottom end of the drill rod, a primary drill cylinder is embedded into a secondary drill limiting groove, the secondary drill is rotated, the secondary drill is screwed up through the matching of the internal thread of the secondary drill and the external thread of the drill rod, and meanwhile, a secondary drill positioning hole block is automatically embedded into a connecting drill bottom groove to abut against the connecting drill, so that the limiting and fixing of the connecting drill are realized; sleeving a connecting drill into the bottom end of the secondary drill, and embedding the secondary drill clamping block into the groove of the connecting drill; then, a third-stage drill is sleeved from the bottom end of the drill rod, a second-stage drill cylinder is embedded into a third-stage drill limiting groove, the third-stage drill is rotated, the third-stage drill is screwed up through matching of the internal thread of the third-stage drill with the external thread of the drill rod, and meanwhile, a third-stage drill positioning hole block is automatically embedded into a connecting drill bottom groove to abut against the connecting drill, so that limiting and fixing of the connecting drill are achieved; and then sleeving the sealing drill at the bottom end of the third-stage drill, embedding the sealing drill into the groove of the sealing drill through the third-stage drill clamping block, penetrating a fastening bolt through the positioning hole of the sealing drill and the positioning hole of the drill rod, and fixing the sealing drill and the drill rod to finish the installation of the invention.
When the drill rod is used, a drill rod drills holes, the holes are drilled through the primary drill tooth rotary cutting, the connecting drill convex patterns connected with the side wall of the drill are used for polishing and reaming, the secondary drill tooth rotary cutting is used, the connecting drill convex patterns connected with the side wall of the drill are used for polishing and reaming, the tertiary drill tooth rotary cutting is used, and finally the sealing cover drill convex patterns are used for polishing to finish the holes.
The invention has the beneficial effects that:
the invention designs a combined type drill bit form, when a drill bit is used for drilling, hierarchical drilling and hole expansion are carried out through a multi-level drill bit form, and the cutting width of each level of drill teeth is reduced through the contact of multi-level drill teeth and a drilling object, so that the cutting resistance in the cutting process is smaller; meanwhile, after cutting through each stage of drilling teeth, reaming and polishing are respectively carried out through the connecting drilling convex lines, so that the smooth cutting of the next stage of drill bit is ensured, the cutting amount of the drilling teeth of the drill bit is reduced, the drilling tooth structure of the drill bit is effectively protected, the service life of each stage of drill bit is prolonged, and the replacement frequency of the drill bit is reduced; during drilling, the connecting drill also performs a limiting effect on the drill and the hole wall, so that the cutting in the linear direction is kept, and the straightness of the final cutting hole diameter is ensured. The device has the advantages of long service life of the drill bit, convenient disassembly and replacement of parts, capability of forming and cutting the stepped hole at one time, and smooth and attractive cutting hole diameter.
Drawings
Fig. 1 is a schematic sectional structure of the present invention.
Fig. 2 is a schematic view of the construction of the drill rod of the present invention.
Fig. 3 is a schematic structural view of the primary drill of the present invention.
FIG. 4 is a schematic cross-sectional view of a primary drill of the present invention.
Fig. 5 is a schematic cross-sectional structure of the secondary drill of the present invention.
FIG. 6 is a schematic cross-sectional view of a secondary drill of the present invention.
FIG. 7 is a schematic cross-sectional view of a tertiary drill of the present invention.
Fig. 8 is a schematic structural view of the joint drill of the present invention.
Fig. 9 is a schematic cross-sectional view of the present invention attachment drill.
Fig. 10 is a schematic cross-sectional view of the present invention cap drill.
List of reference numerals: 1 drill rod, 1-1 drill rod limiting ring, 1-2 drill rod external threads, 1-3 drill rod positioning holes, 2-1 primary drill bits, 2-1 primary drill sleeves, 2-1-1 primary drill teeth, 2-1-2 primary drill top grooves, 2-1-3 primary drill limiting grooves, 2-1-4 primary drill fixture blocks, 2-2 primary drill cylinders, 2-2-1 primary drill through holes, 2-2-2 primary drill internal threads, 3-1 secondary drill bits, 3-1 secondary drill sleeves, 3-1-1 secondary drill teeth, 3-1-2 secondary drill top grooves, 3-1-3 secondary drill limiting grooves, 3-1-4 secondary drill positioning blocks, 3-1-5 secondary drill fixture blocks, 3-2 secondary drill cylinders, 3-2-1 secondary drill through holes, 3-2-1 drill top grooves, 3-1-2 secondary drill top grooves, 3-1-3 secondary drill positioning grooves, 3-1-, The sealing cover drill comprises, by weight, 3-2-2 parts of secondary drill internal threads, 4-1 parts of tertiary drill sleeves, 4-2 parts of tertiary drill top grooves, 4-3 parts of tertiary drill limiting grooves, 4-4 parts of tertiary drill positioning blocks, 4-5 parts of tertiary drill clamping blocks, 4-6 parts of tertiary drill through holes, 4-7 parts of tertiary drill internal threads, 5 parts of connecting drills, 5-1 parts of connecting drill wales, 5-2 parts of connecting drill through holes, 5-3 parts of connecting drill grooves, 5-4 parts of connecting drill bottom grooves, 6 parts of sealing cover drills, 6-1 parts of sealing cover drill wales, 6-2 parts of sealing cover drill top grooves, 6-3 parts of sealing cover drill through holes, 6-4 parts of sealing cover drill positioning holes and 7 parts of positioning bolts.
Detailed Description
In order to make the technical scheme of the invention clearer and clearer, the invention is further described with reference to the accompanying drawings, and any scheme obtained by carrying out equivalent replacement and conventional reasoning on the technical characteristics of the technical scheme of the invention falls into the protection scope of the invention. The fixed connection, the fixed arrangement and the fixed structure mentioned in the embodiment are known technologies known to those skilled in the art, such as gluing, welding, screwing, bolt-nut connection, riveting and the like.
The combined type multistage drill bit device is characterized by comprising a drill rod, a first-stage drill, a second-stage drill, a third-stage drill sleeve, a connecting drill, a sealing drill and a positioning bolt;
the drill rod is in a round rod shape, the top section of the drill rod is in a twist drill shape, a drill rod limiting ring is arranged on the outer wall of the top section of the drill rod in the circumferential direction, and the drill rod limiting ring is fixedly connected with the drill rod and is in an integrated structure; the outer wall of the top section of the drill rod is threaded in the circumferential direction to form a drill rod external thread, and the drill rod external thread is arranged at the bottom end of the drill rod limiting ring; the side wall of the bottom end of the drill rod is in a blind hole shape to form a drill rod positioning hole, and the inner wall of the drill rod positioning hole is in an internal thread shape;
the primary drill comprises a primary drill sleeve and a primary drill barrel, primary drill teeth are circumferentially arranged on the outer ring of the top end of the primary drill sleeve, the primary drill teeth are vertically and fixedly connected with the primary drill sleeve, and the primary drill teeth are in a sawtooth shape; the center of the upper surface of the primary drill bushing is of a groove-shaped structure to form a primary drill top groove, and the center bottom of the primary drill top groove is of a groove-shaped structure to form a primary drill limiting groove; the outer side wall of the primary drill bushing is provided with a primary drill fixture block, and the primary drill fixture block is fixedly connected with the primary drill bushing; the primary drill barrel is arranged at the bottom end of the primary drill sleeve and is vertically and fixedly connected with the primary drill sleeve, the center of the primary drill barrel is in a through hole structure and penetrates through the center of the primary drill sleeve to form a primary drill through hole, and the inner side wall of the primary drill through hole is in a thread structure to form primary drill internal threads; the primary drill is arranged at the top end of the drill rod, the drill rod limiting ring is embedded into the primary drill limiting groove, and the primary drill is fixed with the drill rod through matching of primary drill internal threads and drill rod external threads;
the secondary drill comprises a secondary drill sleeve and a secondary drill barrel; the outer ring of the top end of the secondary drill bushing is circumferentially provided with secondary drill teeth, the secondary drill teeth are vertically and fixedly connected with the secondary drill bushing, and the secondary drill teeth are in a sawtooth shape; the center of the upper surface of the secondary drill bushing is of a groove-shaped structure to form a secondary drill top groove, and the center bottom of the secondary drill top groove is of a groove-shaped structure to form a secondary drill limiting groove; a secondary drill positioning block is arranged on the bottom surface of the secondary drill top groove and is fixedly connected with the secondary drill bushing to form an integrated structure; the outer side wall of the secondary drill bushing is provided with a secondary drill fixture block, and the secondary drill fixture block is fixedly connected with the secondary drill bushing; the secondary drill cylinder is arranged at the bottom end of the secondary drill sleeve and is vertically and fixedly connected with the secondary drill sleeve, the center of the secondary drill cylinder is in a through hole-shaped structure and penetrates through the center of the secondary drill sleeve to form a secondary drill through hole, and the inner side wall of the secondary drill through hole is in a thread-shaped structure to form a secondary drill internal thread; the secondary drill is arranged at the top section of the drill rod and at the bottom end of the primary drill, the primary drill barrel is inserted into the secondary drill limiting groove, and the secondary drill is fixed with the drill rod by matching the internal thread of the secondary drill with the external thread of the drill rod;
three-stage drill teeth are circumferentially arranged on the outer ring at the top end of the three-stage drill bushing and are vertically and fixedly connected with the three-stage drill bushing, and the three-stage drill teeth are in a sawtooth shape; the center of the upper surface of the three-stage drill bushing is of a groove-shaped structure to form a three-stage drill top groove, and the center bottom of the three-stage drill top groove is of a groove-shaped structure to form a three-stage drill limiting groove; the secondary drill positioning block is arranged on the outer side of the tertiary drill limiting groove, a tertiary drill positioning block is arranged on the bottom surface of the tertiary drill top groove, and the tertiary drill positioning block is fixedly connected with the tertiary drill sleeve and is of an integrated structure; a tertiary drilling fixture block is arranged on the outer side wall of the tertiary drilling sleeve and is fixedly connected with the tertiary drilling sleeve; the center of the third-stage drill bushing is in a through hole-shaped structure to form a third-stage drill through hole, and the inner side wall of the third-stage drill through hole is in a thread-shaped structure to form a third-stage drill internal thread; the three-stage drill bushing is arranged at the top section of the drill rod and at the bottom end of the second-stage drill, the second-stage drill cylinder is inserted into the three-stage drill limiting groove, and the three-stage drill bushing and the drill rod are fixed by matching the internal thread of the third-stage drill with the external thread of the drill rod;
the connecting drill is of a cylindrical structure, and the top end of the outer side wall of the connecting drill is of a convex-grain-shaped structure in the circumferential direction to form a connecting drill convex grain; the center of the connecting drill is in a through hole-shaped structure to form a connecting drill through hole; the side wall of the connecting drill through hole is provided with a connecting drill groove which is obliquely arranged; the bottom surface of the connecting drill is of a groove-shaped structure in the circumferential direction to form a connecting drill bottom groove; the connecting drill is arranged between the first-stage drill and the second-stage drill and between the second-stage drill and the third-stage drill sleeve; the primary drill and the secondary drill and the tertiary drill sleeve are fixed through clamping;
the sealing drill comprises a sealing drill sleeve and a sealing drill cylinder; the top end of the outer side wall of the sealing drill sleeve is of a convex-thread structure in the circumferential direction to form a sealing drill convex thread; the center of the top surface of the sealing drill sleeve is of a groove-shaped structure to form a sealing drill top groove, a sealing drill groove is formed in the side wall of the sealing drill top groove, and the sealing drill groove is obliquely arranged; the sealing cover drill cylinder is arranged on the bottom surface of the sealing cover drill sleeve and is vertically and fixedly connected with the sealing cover drill sleeve, the center of the sealing cover drill cylinder is in a through hole shape to form a sealing cover drill through hole, and the sealing cover drill through hole penetrates through the sealing cover drill sleeve; the side wall of the sealing cover drill cylinder is in a through hole shape to form a sealing cover drill positioning hole; the sealing cover drill is arranged at the bottom end of the tertiary drill bushing, the tertiary drill clamping block is embedded into the sealing cover drill groove, the tertiary drill bushing and the sealing cover drill are fixed, the positioning bolt penetrates through the sealing cover drill positioning hole and extends into the drill rod positioning hole, and the sealing cover drill, the tertiary drill bushing and the drill rod are fixed through threaded connection.
Furthermore, the first-stage drill bushing is of a round table-shaped structure and is of a structure with a wide upper part and a narrow lower part.
Furthermore, the primary drill top groove is of a round table-shaped structure and is of a structure with a wide upper part and a narrow lower part.
Furthermore, the shape and the size of the first-stage drill limiting groove are matched with those of the drill rod limiting ring.
Furthermore, the number of the first-stage drill clamping blocks is four, and the first-stage drill clamping blocks are circumferentially arranged on the side wall of the first-stage drill bushing and symmetrically arranged.
Furthermore, the secondary drill positioning block is of a circular ring-shaped structure and is coaxially arranged with the secondary drill through hole.
Furthermore, the top end and the bottom end of the side wall of the connecting drill are both in a chamfer structure.
Furthermore, the top end of the connecting drill through hole is in a round table-shaped structure and is in a structure with a wide upper part and a narrow lower part; the bottom end of the connecting drill through hole is of a cylindrical structure.
Furthermore, the number of the connecting drill grooves arranged in each connecting drill through hole is four, and each connecting drill groove is circumferentially arranged in the connecting drill through hole and symmetrically arranged; the shape and the size of each connecting drill groove are respectively adapted to the shape and the size of the corresponding primary drill clamping block and the corresponding secondary drill clamping block.
Furthermore, the connecting drill bottom groove is of a circular ring-shaped structure and is coaxially arranged with the connecting drill through hole.
Furthermore, the top groove of the sealing cover drill is in a round table-shaped structure, and the shape and the size of the top groove of the sealing cover drill are matched with those of the bottom surface of the three-level drill bushing.
The structural principle of the invention is as follows:
when the drill pipe fixing device is installed, a primary drill is sleeved from the bottom end of a drill pipe, a drill pipe limiting ring is embedded into a primary drill limiting groove, and the primary drill is fixed with the drill pipe through matching of primary drill internal threads and drill pipe external threads; sleeving a connecting drill into the bottom end of the primary drill, and embedding the primary drill clamping block into the groove of the connecting drill; then, a secondary drill is sleeved from the bottom end of the drill rod, a primary drill cylinder is embedded into a secondary drill limiting groove, the secondary drill is rotated, the secondary drill is screwed up through the matching of the internal thread of the secondary drill and the external thread of the drill rod, and meanwhile, a secondary drill positioning hole block is automatically embedded into a connecting drill bottom groove to abut against the connecting drill, so that the limiting and fixing of the connecting drill are realized; sleeving a connecting drill into the bottom end of the secondary drill, and embedding the secondary drill clamping block into the groove of the connecting drill; then, a third-stage drill is sleeved from the bottom end of the drill rod, a second-stage drill cylinder is embedded into a third-stage drill limiting groove, the third-stage drill is rotated, the third-stage drill is screwed up through matching of the internal thread of the third-stage drill with the external thread of the drill rod, and meanwhile, a third-stage drill positioning hole block is automatically embedded into a connecting drill bottom groove to abut against the connecting drill, so that limiting and fixing of the connecting drill are achieved; and then sleeving the sealing drill at the bottom end of the third-stage drill, embedding the sealing drill into the groove of the sealing drill through the third-stage drill clamping block, penetrating a fastening bolt through the positioning hole of the sealing drill and the positioning hole of the drill rod, and fixing the sealing drill and the drill rod to finish the installation of the invention.
When the drill rod is used, a drill rod drills holes, the holes are drilled through the primary drill tooth rotary cutting, the connecting drill convex patterns connected with the side wall of the drill are used for polishing and reaming, the secondary drill tooth rotary cutting is used, the connecting drill convex patterns connected with the side wall of the drill are used for polishing and reaming, the tertiary drill tooth rotary cutting is used, and finally the sealing cover drill convex patterns are used for polishing to finish the holes.
The invention has the beneficial effects that:
the invention designs a combined type drill bit form, when a drill bit is used for drilling, hierarchical drilling and hole expansion are carried out through a multi-level drill bit form, and the cutting width of each level of drill teeth is reduced through the contact of multi-level drill teeth and a drilling object, so that the cutting resistance in the cutting process is smaller; meanwhile, after cutting through each stage of drilling teeth, reaming and polishing are respectively carried out through the connecting drilling convex lines, so that the smooth cutting of the next stage of drill bit is ensured, the cutting amount of the drilling teeth of the drill bit is reduced, the drilling tooth structure of the drill bit is effectively protected, the service life of each stage of drill bit is prolonged, and the replacement frequency of the drill bit is reduced; during drilling, the connecting drill also performs a limiting effect on the drill and the hole wall, so that the cutting in the linear direction is kept, and the straightness of the final cutting hole diameter is ensured. The device has the advantages of long service life of the drill bit, convenient disassembly and replacement of parts, capability of forming and cutting the stepped hole at one time, and smooth and attractive cutting hole diameter.
Claims (10)
1. A combined multi-stage drill bit device is characterized by comprising a drill rod, a first-stage drill, a second-stage drill, a third-stage drill sleeve, a connecting drill, a sealing cover drill and a positioning bolt;
the drill rod is in a round rod shape, the top section of the drill rod is in a twist drill shape, a drill rod limiting ring is arranged on the outer wall of the top section of the drill rod in the circumferential direction, and the drill rod limiting ring is fixedly connected with the drill rod and is in an integrated structure; the outer wall of the top section of the drill rod is threaded in the circumferential direction to form a drill rod external thread, and the drill rod external thread is arranged at the bottom end of the drill rod limiting ring; the side wall of the bottom end of the drill rod is in a blind hole shape to form a drill rod positioning hole, and the inner wall of the drill rod positioning hole is in an internal thread shape;
the primary drill comprises a primary drill sleeve and a primary drill barrel, primary drill teeth are circumferentially arranged on the outer ring of the top end of the primary drill sleeve, the primary drill teeth are vertically and fixedly connected with the primary drill sleeve, and the primary drill teeth are in a sawtooth shape; the center of the upper surface of the primary drill bushing is of a groove-shaped structure to form a primary drill top groove, and the center bottom of the primary drill top groove is of a groove-shaped structure to form a primary drill limiting groove; the outer side wall of the primary drill bushing is provided with a primary drill fixture block, and the primary drill fixture block is fixedly connected with the primary drill bushing; the primary drill barrel is arranged at the bottom end of the primary drill sleeve and is vertically and fixedly connected with the primary drill sleeve, the center of the primary drill barrel is in a through hole structure and penetrates through the center of the primary drill sleeve to form a primary drill through hole, and the inner side wall of the primary drill through hole is in a thread structure to form primary drill internal threads; the primary drill is arranged at the top end of the drill rod, the drill rod limiting ring is embedded into the primary drill limiting groove, and the primary drill is fixed with the drill rod through matching of primary drill internal threads and drill rod external threads;
the secondary drill comprises a secondary drill sleeve and a secondary drill barrel; the outer ring of the top end of the secondary drill bushing is circumferentially provided with secondary drill teeth, the secondary drill teeth are vertically and fixedly connected with the secondary drill bushing, and the secondary drill teeth are in a sawtooth shape; the center of the upper surface of the secondary drill bushing is of a groove-shaped structure to form a secondary drill top groove, and the center bottom of the secondary drill top groove is of a groove-shaped structure to form a secondary drill limiting groove; a secondary drill positioning block is arranged on the bottom surface of the secondary drill top groove and is fixedly connected with the secondary drill bushing to form an integrated structure; the outer side wall of the secondary drill bushing is provided with a secondary drill fixture block, and the secondary drill fixture block is fixedly connected with the secondary drill bushing; the secondary drill cylinder is arranged at the bottom end of the secondary drill sleeve and is vertically and fixedly connected with the secondary drill sleeve, the center of the secondary drill cylinder is in a through hole-shaped structure and penetrates through the center of the secondary drill sleeve to form a secondary drill through hole, and the inner side wall of the secondary drill through hole is in a thread-shaped structure to form a secondary drill internal thread; the secondary drill is arranged at the top section of the drill rod and at the bottom end of the primary drill, the primary drill barrel is inserted into the secondary drill limiting groove, and the secondary drill is fixed with the drill rod by matching the internal thread of the secondary drill with the external thread of the drill rod;
three-stage drill teeth are circumferentially arranged on the outer ring at the top end of the three-stage drill bushing and are vertically and fixedly connected with the three-stage drill bushing, and the three-stage drill teeth are in a sawtooth shape; the center of the upper surface of the three-stage drill bushing is of a groove-shaped structure to form a three-stage drill top groove, and the center bottom of the three-stage drill top groove is of a groove-shaped structure to form a three-stage drill limiting groove; the secondary drill positioning block is arranged on the outer side of the tertiary drill limiting groove, a tertiary drill positioning block is arranged on the bottom surface of the tertiary drill top groove, and the tertiary drill positioning block is fixedly connected with the tertiary drill sleeve and is of an integrated structure; a tertiary drilling fixture block is arranged on the outer side wall of the tertiary drilling sleeve and is fixedly connected with the tertiary drilling sleeve; the center of the third-stage drill bushing is in a through hole-shaped structure to form a third-stage drill through hole, and the inner side wall of the third-stage drill through hole is in a thread-shaped structure to form a third-stage drill internal thread; the three-stage drill bushing is arranged at the top section of the drill rod and at the bottom end of the second-stage drill, the second-stage drill cylinder is inserted into the three-stage drill limiting groove, and the three-stage drill bushing and the drill rod are fixed by matching the internal thread of the third-stage drill with the external thread of the drill rod;
the connecting drill is of a cylindrical structure, and the top end of the outer side wall of the connecting drill is of a convex-grain-shaped structure in the circumferential direction to form a connecting drill convex grain; the center of the connecting drill is in a through hole-shaped structure to form a connecting drill through hole; the side wall of the connecting drill through hole is provided with a connecting drill groove which is obliquely arranged; the bottom surface of the connecting drill is of a groove-shaped structure in the circumferential direction to form a connecting drill bottom groove; the connecting drill is arranged between the first-stage drill and the second-stage drill and between the second-stage drill and the third-stage drill sleeve; the primary drill and the secondary drill and the tertiary drill sleeve are fixed through clamping;
the sealing drill comprises a sealing drill sleeve and a sealing drill cylinder; the top end of the outer side wall of the sealing drill sleeve is of a convex-thread structure in the circumferential direction to form a sealing drill convex thread; the center of the top surface of the sealing drill sleeve is of a groove-shaped structure to form a sealing drill top groove, a sealing drill groove is formed in the side wall of the sealing drill top groove, and the sealing drill groove is obliquely arranged; the sealing cover drill cylinder is arranged on the bottom surface of the sealing cover drill sleeve and is vertically and fixedly connected with the sealing cover drill sleeve, the center of the sealing cover drill cylinder is in a through hole shape to form a sealing cover drill through hole, and the sealing cover drill through hole penetrates through the sealing cover drill sleeve; the side wall of the sealing cover drill cylinder is in a through hole shape to form a sealing cover drill positioning hole; the sealing cover drill is arranged at the bottom end of the tertiary drill bushing, the tertiary drill clamping block is embedded into the sealing cover drill groove, the tertiary drill bushing and the sealing cover drill are fixed, the positioning bolt penetrates through the sealing cover drill positioning hole and extends into the drill rod positioning hole, and the sealing cover drill, the tertiary drill bushing and the drill rod are fixed through threaded connection.
2. The combination multi-stage drill bit device of claim 1, wherein the primary drill sleeve is a circular truncated cone-shaped structure with a wide top and a narrow bottom.
3. The combination multi-stage drill bit device of claim 1, wherein the primary drill top groove is a truncated cone-shaped structure with a wide top and a narrow bottom.
4. The combination multi-stage drill bit device of claim 1, wherein the shape and size of the primary drill limit groove are adapted to the shape and size of the drill rod limit ring.
5. The combined multi-stage drill bit device as claimed in claim 1, wherein the number of the first stage drill blocks is four, and the first stage drill blocks are circumferentially arranged on the side wall of the first stage drill bushing and symmetrically arranged.
6. The combination multi-stage drill bit device of claim 1, wherein the secondary drill locating block is of a circular ring structure and is coaxially disposed with the secondary drill through hole.
7. The combination multi-stage drill bit assembly of claim 1, wherein the top and bottom of the connecting drill sidewall are chamfered.
8. The combined multi-stage drill bit device according to claim 1, wherein the top end of the connecting drill through hole is in a truncated cone-shaped structure which is wide at the top and narrow at the bottom; the bottom end of the connecting drill through hole is of a cylindrical structure.
9. The combined multi-stage drill bit device according to claim 1, wherein the number of the connecting drill grooves arranged in each connecting drill through hole is four, and each connecting drill groove is circumferentially arranged in the connecting drill through hole and symmetrically arranged; the shape and the size of each connecting drill groove are respectively adapted to the shape and the size of the corresponding primary drill clamping block and the corresponding secondary drill clamping block.
10. The combination multi-stage drill bit assembly of claim 1 wherein said connecting bore bottom slot is of annular configuration and is disposed coaxially with said connecting bore through hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910636438.1A CN110548903B (en) | 2019-07-15 | 2019-07-15 | Combined multi-stage drill bit device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910636438.1A CN110548903B (en) | 2019-07-15 | 2019-07-15 | Combined multi-stage drill bit device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110548903A CN110548903A (en) | 2019-12-10 |
| CN110548903B true CN110548903B (en) | 2021-02-19 |
Family
ID=68735686
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910636438.1A Active CN110548903B (en) | 2019-07-15 | 2019-07-15 | Combined multi-stage drill bit device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110548903B (en) |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2486363A (en) * | 1947-01-29 | 1949-10-25 | Carl D Langston | Combination drill and brush |
| JP3160232B2 (en) * | 1997-06-27 | 2001-04-25 | 株式会社不二越 | Composite drilling tool |
| CN2464924Y (en) * | 2000-12-13 | 2001-12-12 | 王效勤 | Multi-stage combined dimond composite piece drill |
| CN202227987U (en) * | 2011-09-19 | 2012-05-23 | 中国矿业大学 | Automatic switching water jet slotting combined type drill bit |
| CN203184720U (en) * | 2013-03-22 | 2013-09-11 | 吴江市金明机械有限公司 | Step drilling cutter |
| CN104763348B (en) * | 2015-03-05 | 2016-09-28 | 成都理工大学 | The brill of the bionical nozzle of a kind of build-in expands integral type drilling tool and bores expanding method |
| CN204920795U (en) * | 2015-07-03 | 2015-12-30 | 邹城兖矿泰德工贸有限公司 | Combined broaching bit for mine |
-
2019
- 2019-07-15 CN CN201910636438.1A patent/CN110548903B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN110548903A (en) | 2019-12-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20110243675A1 (en) | Hole saw | |
| CA2669044A1 (en) | Drill bit nozzle assembly, insert assembly including same and method of manufacturing or retrofitting a steel body bit for use with the insert assembly | |
| RU2302506C2 (en) | Male drill rod section, drill bit and threaded connection between male drill rod section and drill bit for percussion rock drilling | |
| CN110548903B (en) | Combined multi-stage drill bit device | |
| WO1997043515A1 (en) | Drill bit retainer for a down hole hammer assembly | |
| CN103121116A (en) | Shock-absorbing boring bar | |
| US1755264A (en) | Means for anchoring bolts | |
| US3520565A (en) | Connecting of tapered spigots and sockets | |
| CN200991774Y (en) | Clip-head structure main axle | |
| CN102691709B (en) | Fixed system | |
| CN211362705U (en) | Drill bushing structure easy to disassemble and assemble | |
| CN205558812U (en) | A drill bit that is used for processing on rock blind hole | |
| CN205870283U (en) | Core symmetry anchor clamps are bored in coping | |
| CN109894566A (en) | A kind of automobile rivet, which bores, removes equipment | |
| KR20050017174A (en) | Waterproof type collet chuck | |
| US6899342B2 (en) | Manually tightened chuck | |
| CN213684037U (en) | Horizontal well coring tool | |
| CN210731033U (en) | Novel electric drill chuck | |
| US11739593B2 (en) | Drill bit assembly for percussion drill tools | |
| CN2413013Y (en) | Split down-the-hole drill bit | |
| CN213743265U (en) | Rotary digging drill bit | |
| CN214741109U (en) | Reducing joint for diamond drilling tool | |
| JP7142994B1 (en) | Anchor bolt pilot hole drilling tool, pilot hole drilling jig, and pilot hole drilling method | |
| US6899343B2 (en) | Manually tightened chuck | |
| US11280134B2 (en) | Ground drilling device, method for making a ground drilling device, method for maintaining a ground drilling device, and use of a ground drilling device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20201222 Address after: 212000 Xinglong Village, Yaoqiao Town, New District, Zhenjiang City, Jiangsu Province Applicant after: Zhenjiang Jinye Tools Co.,Ltd. Address before: 212000 Xinglong Village, Yaoqiao Town, New District, Zhenjiang City, Jiangsu Province Applicant before: Zhenjiang Yaoyan Tools Co.,Ltd. |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20231226 Address after: 250000 South of Qingnigou Village, Aishan Street, Gangcheng District, Jinan City, Shandong Province Patentee after: Laiwu jinrunyuan Machinery Manufacturing Co.,Ltd. Address before: 212000 Xinglong Village, Yaoqiao Town, New District, Zhenjiang City, Jiangsu Province Patentee before: Zhenjiang Jinye Tools Co.,Ltd. |