CN115502449B - Drill bit of tooth-shaped cutter handle and drill bushing adapting to drill bit - Google Patents
Drill bit of tooth-shaped cutter handle and drill bushing adapting to drill bit Download PDFInfo
- Publication number
- CN115502449B CN115502449B CN202211386024.6A CN202211386024A CN115502449B CN 115502449 B CN115502449 B CN 115502449B CN 202211386024 A CN202211386024 A CN 202211386024A CN 115502449 B CN115502449 B CN 115502449B
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- CN
- China
- Prior art keywords
- drill
- bushing
- tooth
- side plate
- sleeve
- Prior art date
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Links
- 238000005520 cutting process Methods 0.000 claims abstract description 42
- 229910000851 Alloy steel Inorganic materials 0.000 claims description 3
- 230000003044 adaptive effect Effects 0.000 claims 1
- 238000005553 drilling Methods 0.000 abstract description 20
- 238000003754 machining Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 238000010923 batch production Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000009191 jumping Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B51/00—Tools for drilling machines
- B23B51/0054—Drill guiding devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B49/00—Measuring or gauging equipment on boring machines for positioning or guiding the drill; Devices for indicating failure of drills during boring; Centering devices for holes to be bored
- B23B49/003—Stops attached to drilling tools, tool holders or drilling machines
- B23B49/005—Attached to the drill
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B49/00—Measuring or gauging equipment on boring machines for positioning or guiding the drill; Devices for indicating failure of drills during boring; Centering devices for holes to be bored
- B23B49/02—Boring templates or bushings
- B23B49/023—Bushings and their connection to the template
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B51/00—Tools for drilling machines
- B23B51/12—Adapters for drills or chucks; Tapered sleeves
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Processing Of Stones Or Stones Resemblance Materials (AREA)
Abstract
The invention relates to a drill tool, in particular to a drill of a tooth-shaped cutter handle and a drill bushing matched with the drill, wherein the drill comprises a cutting part and a cutter handle, a rotating bushing is rotatably arranged at a shaft neck, and a tooth biting assembly matched with the rotating bushing is arranged between the rotating bushing and the shaft neck; one side of the rotating sleeve facing the cutting part is provided with an extension arm, and one end of the extension arm is provided with a roller. The drill bushing comprises a bushing body, a side plate fixed on the outer wall of the bushing body and a stop piece adjustably arranged on the side plate; when the drill bit is matched, after the roller on the drill bit rotates to be attached to the side plate, the roller receives larger resistance, and the roller, the extension arm and the rotating sleeve do not rotate any more and only move downwards along with the cutter handle; when the roller moves downward to contact the stopper, the roller cannot continue to move downward; the extension arm and the rotary sleeve cannot continue downwards, and deep drilling is not continued any more, so that the depth of the drilled hole is controlled.
Description
Technical Field
The invention relates to a drill tool, in particular to a drill with a tooth-shaped cutter handle and a drill sleeve matched with the drill.
Background
In the field of machining, drilling applications are very wide, including deep hole drilling, blind hole drilling, reaming and the like, drilling is not separated from a drilling machine, and common drilling machines include a semi-automatic drilling machine, a manual drilling machine and a pistol drill; there are, of course, numerically controlled drilling machines; the small-batch production in a common single drilling procedure basically does not use a numerical control drilling machine; in order to ensure accurate positioning when drilling, whether it is a hand drill or a semiautomatic drill or a pistol drill, it is often necessary to assist in positioning by means of a drill bushing.
It is known that in the initial stage of drilling by using a hand drill and a gun drill, the surface of a workpiece or a plate is smooth, and the cutting edge (cutting edge) of the drill cannot be stably attached to a specific position, so that the drill is extremely liable to deviate when a pressing force is applied to the drill; to solve this problem, drill bushings are often used in the industry for positioning to avoid bit misalignment; the drill sleeve is arranged on the drill plate or the clamp body when in use, and is used for determining the position of a machined hole on a workpiece, guiding the cutter to machine, improving the rigidity of the cutter in the machining process and preventing vibration in the machining process.
Although the position of the drilling hole can be accurately positioned through the drill bushing, the control of the drilling hole depth still needs to be judged manually, and the depth deviation is often larger.
Disclosure of Invention
The invention aims to provide a drill bit of a tooth-shaped cutter handle and a drill sleeve matched with the drill bit, so as to solve the problems in the background art.
In order to achieve the above purpose, the present invention provides the following technical solutions:
The drill bit of the tooth-shaped cutter handle comprises a cutting part and a cutter handle, wherein two cutting grooves are spirally formed in the cutting part, and a cutting edge angle is ground at the end part of the cutting part;
two circles of bulges are arranged at the joint of the cutting part and the knife handle, and a shaft neck is formed between the two circles of bulges; a rotating sleeve is rotatably arranged at the shaft neck, and a tooth biting assembly matched with each other is arranged between the inner wall of the rotating sleeve and the outer wall of the shaft neck;
The rotary sleeve is provided with an extension arm towards one side of the cutting part, the extension arm is parallel to the axis of the cutting part, and one end of the extension arm, which is far away from the rotary sleeve, is provided with a roller in a rotating way.
A bit of a toothed shank as described above: the end part of the knife handle is provided with a flat tail, and a fixing hole for a bolt to pass through and fix the flat tail is formed in the flat tail.
A bit of a toothed shank as described above: the biting tooth assembly comprises a plurality of fixed teeth and a plurality of movable teeth, the fixed teeth are arranged on the inner wall of the rotating sleeve at equal intervals along the circumference, and the movable teeth are arranged on the shaft neck in a sliding manner;
The movable teeth are distributed at equal intervals along the periphery of the shaft neck, a sliding block is arranged on one surface of the movable teeth facing the shaft neck, and the sliding block is in sliding fit with a sliding groove formed in the outer wall of the shaft neck; the sliding groove is parallel to the axis of the knife handle;
the fixed tooth is provided with a first wedge surface towards one end of the movable tooth, a second wedge surface matched with the first wedge surface is arranged at one end of the movable tooth towards the fixed tooth, and the inclination directions of the first wedge surface and the second wedge surface are the same as the spiral direction of the cutting groove.
A drill bushing of a drill bit suitable for the toothed shank comprises a bushing body, a side plate fixed on the outer wall of the bushing body, and a stop piece adjustably arranged on the side plate along the length direction of the side plate;
the side plates are parallel to the axis of the cutting portion.
A drill bushing as described above: the outer wall of the side plate is provided with a mounting sleeve, the mounting sleeve is parallel to the side plate, a screw rod is rotationally arranged in the mounting sleeve, the screw rod is in threaded fit with the spiral ring, and the side wall of the mounting sleeve is provided with a guide groove; the stop piece penetrates through the guide groove to extend into the mounting sleeve and is fixed with the spiral ring.
A drill bushing as described above: the top of the screw is provided with a knob, the top of the mounting sleeve is provided with a rotating ring, and the rotating ring is in running fit with the upper part of the screw; the lower edge of the sleeve body is uniformly distributed with a plurality of positioning holes along the circumference.
A drill bushing as described above: the outer wall of the mounting sleeve is provided with a graduated scale, and the side plates are made of alloy steel materials.
Compared with the prior art, the invention has the beneficial effects that: the rotating resistance of the rotating sleeve and the shaft neck can be increased through the tooth biting assembly, so that the rotating sleeve, the extension arm and the roller can rotate along with the cutter handle and the cutting part under the condition of not receiving additional resistance;
when the drill bit is matched, after the roller on the drill bit rotates to be attached to the side plate, the roller receives larger resistance, so that the roller, the extension arm and the rotating sleeve do not rotate along with the journal any more, but only move downwards along with the cutter handle;
When the roller moves downward to contact the stopper, the roller cannot continue to move downward; the extension arm and the rotary sleeve cannot continue to downwards, so that the cutting part, the cutter handle and the machine are finally kept at the current depth, and deep drilling is not continued any more, so that the depth of the drilled hole is controlled.
Drawings
FIG. 1 is a schematic view of a bit with a toothed shank;
FIG. 2 is a schematic view of the structure of a toothed shank bit after the sleeve is detached from the journal;
FIG. 3 is an enlarged view of FIG. 2 at A;
FIG. 4 is a three-dimensional perspective view of a rotary sleeve in a drill bit of a toothed shank after half-sectioning;
FIG. 5 is an enlarged view at B in FIG. 4;
FIG. 6 is a schematic view of the structure of the toothed shank after complete removal of the sleeve from the bit;
FIG. 7 is a schematic view of the configuration of a toothed shank bit in cooperation with a drill sleeve of the present invention;
FIG. 8 is a schematic view of the structure of the drill bushing of the present invention;
FIG. 9 is a schematic view of the screw and screw ring removed from the mounting sleeve;
FIG. 10 is a schematic view of the structure of FIG. 9 from another perspective;
In the figure: 101-a cutting part; 102, a knife handle; 103-flat tail; 104-fixing holes; 105-turning sleeve; 106-extending the arm; 107-rollers; 108-bulge; 109-movable teeth; 110-fixed teeth; 111-a slider; 112-a chute;
201-a sleeve body; 202-positioning holes; 203-side plates; 204-mounting a sleeve; 205-stop; 206-a screw; 207-spirocyclic; 208-rotating a ring; 209-a knob; 210-guide slots.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments.
Referring to fig. 1 to 6, as an embodiment of the present invention, the bit of the toothed shank includes a cutting portion 101 and a shank 102, wherein two cutting grooves are spirally formed on the cutting portion 101, and a cutting angle is ground at an end of the cutting portion 101;
two circles of bulges 108 are arranged at the joint of the cutting part 101 and the cutter handle 102, and a shaft neck is formed between the two circles of bulges 108; a rotating sleeve 105 is rotatably arranged at the shaft neck, and a mutually matched tooth biting assembly is arranged between the inner wall of the rotating sleeve 105 and the outer wall of the shaft neck;
the rotating sleeve 105 is provided with an extension arm 106 on the side facing the cutting part 101, the extension arm 106 is parallel to the axis of the cutting part 101, and a roller 107 is rotatably arranged at one end of the extension arm 106 away from the rotating sleeve 105.
The invention can increase the rotation resistance of the rotating sleeve 105 and the shaft neck through the tooth biting assembly, so that the rotating sleeve 105, the extension arm 106 and the roller 107 can rotate along with the cutter handle 102 and the cutting part 101 without additional resistance;
Since the rotating sleeve 105 is in rotating fit with the shaft neck, the rotating sleeve and the shaft neck are in clearance fit; that is, the inner diameter of the rotating sleeve 105 is slightly larger than the outer wall of the journal, and the contact surface between the rotating sleeve 105 and the protrusion 108 is very limited, so that if the biting assembly is not arranged, the rotating sleeve 105 can not rotate along with the shank 102 only by virtue of the friction force between the journal and the rotating sleeve 105 and the friction force between the rotating sleeve 105 and the protrusion 108 when the shank 102 rotates; in particular, during chip removal from the chip pocket, the continuously discharging chip can block the rollers 107 and extension arms 106 from rotating.
As a further aspect of the present invention, please refer to fig. 1, 2, and 6; the end of the knife handle 102 is provided with a flat tail 103, and the flat tail 103 is provided with a fixing hole 104 for a bolt to pass through and fix the flat tail 103.
One end of the drill bit can be installed into the machine by utilizing the flat tail 103, and the flat tail 103 is fixed with the machine through the fixing hole 104 on the flat tail 103, so that the output shaft of the machine and the drill bit are prevented from rotating and slipping.
As a further aspect of the present invention, referring to fig. 2 to 5, the tooth biting assembly includes a plurality of fixed teeth 110 circumferentially equidistantly disposed on the inner wall of the rotating sleeve 105, and a plurality of movable teeth 109 slidably disposed on the shaft journal;
The movable teeth 109 are distributed at equal intervals along the periphery of the shaft journal, a sliding block 111 is arranged on one surface of the movable teeth 109 facing the shaft journal, and the sliding block 111 is in sliding fit with a sliding groove 112 formed in the outer wall of the shaft journal; the chute 112 is parallel to the axis of the shank 102;
The fixed tooth 110 has a first wedge surface towards one end of the movable tooth 109, a second wedge surface adapted to the first wedge surface is provided at one end of the movable tooth 109 towards the fixed tooth 110, and the inclination directions of the first wedge surface and the second wedge surface are the same as the spiral direction of the cutting groove.
When the cutting part 101 and the tool handle 102 rotate to drill holes, the movable teeth 109 are driven to rotate along with the shaft neck; when the rotating sleeve 105 does not receive larger resistance, the first wedge surface at the end part of the movable tooth 109 acts on the second wedge surface at the end part of the fixed tooth 110, so that the rotating sleeve 105, the extension arm 106 and the roller 107 can be driven to rotate in a following way, and the blocking force generated in the chip removal process of chips in the cutting groove is overcome;
When the roller 107 is blocked from rotating by a larger external force, the rotating sleeve 105 cannot rotate, so that the fixed tooth 110 cannot rotate, and at the moment, the second wedge surface acts on the first wedge surface to enable the movable tooth 109 to overcome the gravity of the movable tooth and the friction force between the sliding block 111 and the sliding groove 112 to rise and yield, thereby realizing that the rotating sleeve 105 cannot rotate without influencing the rotation of the drill bit.
The invention also provides a drill bushing for adapting the drill bit of the toothed shank, referring to fig. 7-10, the drill bushing comprises a bushing body 201, a side plate 203 fixed on the outer wall of the bushing body 201, and a stop piece 205 adjustably arranged on the side plate 203 along the length direction of the side plate 203;
The side plate 203 is parallel to the axis of the cutting portion 101.
When the drill bushing and the drill bit are matched, the bushing body 201 is fixed on the drill plate or the fixture body; then starting the machine to drive the drill bit to rotate, and enabling the drill bit to rotate along with the axis of the drill bit to downwards approach the sleeve 201 when drilling; when the roller 107 on the drill rotates to be attached to the side plate 203, the roller 107, the extension arm 106 and the rotary sleeve 105 do not rotate along with the journal any more, but only move downwards along with the tool shank 102 because the roller 107 receives a larger resistance;
when the roller 107 moves downward into contact with the stopper 205, the roller 107 cannot continue to move downward; the extension arm 107 and the swivel 105 are prevented from continuing downward, eventually allowing the cutting portion 101 and the shank 102 and machine to remain at the current depth, and the drill is no longer continued, thereby controlling the depth of the borehole.
As a still further scheme of the invention, a mounting sleeve 204 is arranged on the outer wall of the side plate 203, the mounting sleeve 204 is parallel to the side plate 203, a screw 206 is rotatably arranged in the mounting sleeve 204, the screw 206 is in threaded fit with a spiral ring 207, and a guide groove 210 is formed in the side wall of the mounting sleeve 204; the stop 205 protrudes through the guide slot 210 into the mounting sleeve 204 and is fixed to the threaded ring 207.
The screw 207 and the stopper 205 are driven to be vertically movably adjusted along the length direction of the side plate 203 by the guide groove 210 by rotating the screw 206, so as to adjust and control the drilling depth of the drill bit.
As a still further scheme of the invention, a knob 209 is arranged at the top of the screw 206, a rotating ring 208 is arranged at the top of the mounting sleeve 204, and the rotating ring 208 is in rotating fit with the upper part of the screw 206; the lower edge of the sleeve 201 is uniformly distributed with a plurality of positioning holes 202 along the circumference.
The sleeve 201 can be fixed on the drill plate or the fixture body by utilizing the positioning holes 202 and the screws; the screw 206 is driven to rotate by rotating the knob 209, the upper part of the screw 206 is supported by the rotating ring 208, the gap between the upper part of the screw 206 and the inner wall of the mounting sleeve 204 is eliminated, and the screw 206 is prevented from axially jumping.
As a still further solution of the present invention, a scale is disposed on the outer wall of the mounting sleeve 204, so as to accurately adjust the position of the stop 205, thereby accurately controlling the drilling depth; the side plate 203 is made of alloy steel, so that the strength of the side plate 203 can be improved, and stress yield after long-time use is avoided.
The above-described embodiments are illustrative, not restrictive, and the technical solutions that can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention are included in the present invention.
Claims (5)
1. The drill bit of the tooth-shaped cutter handle comprises a cutting part (101) and a cutter handle (102), wherein two cutting grooves are spirally formed in the cutting part (101), and a cutting angle is ground at the end part of the cutting part (101);
The cutting tool is characterized in that two circles of bulges (108) are arranged at the joint of the cutting part (101) and the tool shank (102), and a shaft neck is formed between the two circles of bulges (108); a rotating sleeve (105) is rotatably arranged at the shaft neck, and a tooth biting assembly matched with each other is arranged between the inner wall of the rotating sleeve (105) and the outer wall of the shaft neck;
An extension arm (106) is arranged on one side of the rotary sleeve (105) facing the cutting part (101), the extension arm (106) is parallel to the axis of the cutting part (101), and a roller (107) is rotatably arranged at one end of the extension arm (106) far away from the rotary sleeve (105);
The biting tooth assembly comprises a plurality of fixed teeth (110) which are circumferentially and equidistantly arranged on the inner wall of the rotating sleeve (105), and a plurality of movable teeth (109) which are slidably arranged on the shaft neck;
the movable teeth (109) are distributed at equal intervals along the periphery of the shaft neck, a sliding block (111) is arranged on one surface of the movable teeth (109) facing the shaft neck, and the sliding block (111) is in sliding fit with a sliding groove (112) formed in the outer wall of the shaft neck; the chute (112) is parallel to the axis of the shank (102);
The end, facing the movable tooth (109), of the fixed tooth (110) is provided with a first wedge surface, the end, facing the fixed tooth (110), of the movable tooth (109) is provided with a second wedge surface matched with the first wedge surface, and the inclination directions of the first wedge surface and the second wedge surface are the same as the spiral direction of the cutting groove;
the adaptive drill bushing comprises a bushing body (201), a side plate (203) fixed on the outer wall of the bushing body (201), and a stop piece (205) adjustably arranged on the side plate (203) along the length direction of the side plate (203);
the side plate (203) is parallel to the axis of the cutting portion (101).
2. The drill bit of the toothed cutter handle according to claim 1, wherein a flat tail (103) is arranged at the end part of the cutter handle (102), and a fixing hole (104) for a bolt to pass through and fix the flat tail (103) is formed in the flat tail (103).
3. A drill bushing for adapting to the drill bit of the toothed shank according to claim 2, characterized in that a mounting bushing (204) is arranged on the outer wall of the side plate (203), the mounting bushing (204) is parallel to the side plate (203), a screw (206) is rotationally arranged in the mounting bushing (204), the screw (206) is in threaded fit with the spiral ring (207), and a guide groove (210) is formed in the side wall of the mounting bushing (204); the stop piece (205) extends into the mounting sleeve (204) through the guide groove (210) and is fixed with the spiral ring (207).
4. A drill bushing according to claim 3, characterized in that the top of the screw (206) is provided with a knob (209), the top of the mounting bushing (204) is mounted with a rotation ring (208), the rotation ring (208) being in a rotating fit with the upper part of the screw (206); the lower edge of the sleeve body (201) is uniformly distributed with a plurality of positioning holes (202) along the circumference.
5. A drill bushing according to any one of claims 3 or 4, characterized in that the outer wall of the mounting bushing (204) is provided with a scale, and that the side plates (203) are made of alloy steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211386024.6A CN115502449B (en) | 2022-11-07 | 2022-11-07 | Drill bit of tooth-shaped cutter handle and drill bushing adapting to drill bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211386024.6A CN115502449B (en) | 2022-11-07 | 2022-11-07 | Drill bit of tooth-shaped cutter handle and drill bushing adapting to drill bit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115502449A CN115502449A (en) | 2022-12-23 |
| CN115502449B true CN115502449B (en) | 2024-04-26 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211386024.6A Active CN115502449B (en) | 2022-11-07 | 2022-11-07 | Drill bit of tooth-shaped cutter handle and drill bushing adapting to drill bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115502449B (en) |
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| CN210208774U (en) * | 2019-08-01 | 2020-03-31 | 毛清军 | Small-size handheld drilling tool of accurate location of drilling depth |
| CN211915604U (en) * | 2020-02-29 | 2020-11-13 | 长沙千丘刀具有限公司 | Composite cutter |
| CN213379464U (en) * | 2020-09-18 | 2021-06-08 | 镇江市龙润工具有限公司 | High-precision twist drill bit for deep hole machining |
| CN213794244U (en) * | 2020-11-25 | 2021-07-27 | 岳阳长炼机电工程技术有限公司 | On-spot main shaft axle journal repair equipment |
| CN215238278U (en) * | 2021-06-03 | 2021-12-21 | 常州凯拓工具有限公司 | Six-edge reamer |
| CN113333826A (en) * | 2021-06-23 | 2021-09-03 | 巫栋侨 | Drill bit orientation auxiliary device for building and machining and drilling method |
| CN216028259U (en) * | 2021-08-24 | 2022-03-15 | 贵阳市云龙电器配套有限公司 | Multifunctional drilling depth positioning tool |
| CN217704068U (en) * | 2022-01-11 | 2022-11-01 | 瑞安市宇锋金刚石刀具有限公司 | Drill bit with adjustable drilling depth |
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| CN115502449A (en) | 2022-12-23 |
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