CN110756867A - Quick change device for drill bit of bench drilling machine - Google Patents
Quick change device for drill bit of bench drilling machine Download PDFInfo
- Publication number
- CN110756867A CN110756867A CN201911112274.9A CN201911112274A CN110756867A CN 110756867 A CN110756867 A CN 110756867A CN 201911112274 A CN201911112274 A CN 201911112274A CN 110756867 A CN110756867 A CN 110756867A
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- CN
- China
- Prior art keywords
- quick
- drilling machine
- change
- drill
- drill bit
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- 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.)
- Granted
Links
- 238000005553 drilling Methods 0.000 title claims abstract description 36
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 31
- 239000010959 steel Substances 0.000 claims abstract description 31
- 238000000034 method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000005484 gravity Effects 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
- B23B51/12—Adapters for drills or chucks; Tapered sleeves
-
- 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
- B23B51/123—Conical reduction sleeves
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Drilling And Boring (AREA)
- Gripping On Spindles (AREA)
Abstract
The invention relates to a drill bit quick-change device of a bench drilling machine. The drilling machine spindle comprises a drilling machine spindle (1) and is characterized in that: three long grooves are formed in the drilling machine spindle (1) in the circumferential direction, the depth of each long groove is gradually increased from one end to the other end of each long groove, a steel ball (3) is arranged in each long groove, a steel ball sheath (2) is sleeved on the drilling machine spindle (1) beside the three long grooves, and a gap is reserved between the steel ball sheath (2) and the drilling machine spindle (1) so that the three long grooves can be covered or exposed; the drill bit is characterized by further comprising at least two hollow quick-change drill bushings (4), wherein conical threads are arranged on the outer wall of the bottom of each quick-change drill bushing (4), three through grooves are formed in the outer wall of the bottom of each quick-change drill bushing (4) in the radial direction, a drill bit (6) is mounted on the inner wall of the bottom of each quick-change drill bushing (4), and a locking nut (5) is mounted at the conical threads on the outer wall of the bottom of each quick-change drill bushing (4). Adopt this device to realize quick replacement drill bit.
Description
Technical Field
The invention relates to a drill bit quick-change device of a bench drilling machine.
Background
The drill chuck used on the present domestic common table type drilling machine is only suitable for processing parts with small batch sizes, has single aperture, and has low efficiency when needing to process large batch sizes and various apertures, because the drill chuck structure can not be quickly replaced.
Disclosure of Invention
The invention aims to provide a quick-change device for a drill bit of a bench drilling machine, which can obviously improve the processing efficiency when drilling products with various apertures and large batches.
The utility model provides a bench drill bit quick change device, includes the drilling machine main shaft, its characterized in that: three elongated slots are arranged on the drilling machine main shaft along the circumferential direction, the depth of each elongated slot is gradually increased from one end to the other end of each elongated slot, a steel ball is arranged in each elongated slot, steel ball sheaths are sleeved on the drilling machine main shaft beside the three elongated slots, and gaps are reserved between the steel ball sheaths and the drilling machine main shaft so as to cover or expose the three elongated slots; the drill bit is characterized by further comprising at least two hollow quick-change drill bushings, wherein conical threads are arranged on the outer wall of the bottom of each quick-change drill bushing, three through grooves are radially formed in the outer wall of the bottom of each quick-change drill bushing, a drill bit is mounted on the inner wall of the bottom of each quick-change drill bushing, and a locking nut is mounted at the conical threads on the outer wall of the bottom of each quick-change drill bushing, so that the inner wall of the bottom of each quick-change drill bushing can clamp the drill bit tightly by screwing the locking nut.
The three long grooves are arranged on the same plane vertical to the main shaft of the drilling machine and are uniformly distributed in the circumferential direction of the main shaft of the drilling machine.
The at least two quick-change drill bushings particularly refer to two or more quick-change drill bushings with different specifications.
The quick-change drill bushing is sleeved on the drilling machine spindle below the steel ball sheath, and a gap is reserved between the quick-change drill bushing and the drilling machine spindle.
Trial proves that after the device is adopted, the drill bit is replaced quickly, the drill bit is replaced on a common drilling machine for about 1 minute, only 3 seconds are needed by utilizing the quick-replacement chuck, the production efficiency is greatly improved, only one-time manual clamping is needed during replacement, and the labor intensity of workers is reduced.
Drawings
FIG. 1 is a schematic structural diagram of a steel ball sheath 2 and a steel ball 3 part in the invention;
fig. 2 is a schematic view of the present invention in use.
Detailed Description
As shown in fig. 1, the invention provides a drill bit quick-change device of a bench drill, which comprises a drill spindle 1, wherein three elongated slots are formed in the drill spindle 1 along the circumferential direction, the depth of each elongated slot is gradually increased from one end to the other end of each elongated slot, a steel ball 3 is arranged in each elongated slot, a steel ball sheath 2 is sleeved on the drill spindle 1 beside the three elongated slots, and a gap is reserved between the steel ball sheath 2 and the drill spindle 1 so as to cover or expose the three elongated slots; the drill bit is characterized by further comprising at least two, for example, 5 hollow quick-change drill bushings 4, wherein the at least two quick-change drill bushings 4 specifically refer to two or more quick-change drill bushings 4 with different specifications, conical threads are arranged on the outer wall of the bottom of the quick-change drill bushing 4, and three through grooves are radially arranged on the outer wall of the bottom of the quick-change drill bushing 4, so that the outer wall of the bottom of the quick-change drill bushing 4 is in a three-claw shape, a drill bit 6 is mounted on the inner wall of the bottom of the quick-change drill bushing 4, and a locking nut 5 is mounted at the conical threads on the outer wall of the bottom of the quick-change drill bushing 4, so that the bottom of the quick-change drill bushing 4 is deformed to a certain.
The three long grooves are located on the same plane perpendicular to the drilling spindle 1 and are evenly distributed in the circumferential direction of the drilling spindle 1. In addition, the quick-change drill bushing 4 is sleeved on the drilling machine spindle 1 below the steel ball sheath 2, and a gap is reserved between the quick-change drill bushing 4 and the drilling machine spindle 1.
The using method and the working principle of the invention are as follows:
the steel ball quick-change drilling machine comprises a drilling machine spindle 1, a steel ball sheath 2, steel balls 3(3 steel balls are symmetrically distributed), a quick-change drill bushing 4, a locking nut 5 and a drill bit 6. When in use, the drill bits 6 with different sizes are respectively placed in different quick-change drill bushings 4, and the locking nut 5 is screwed (the locking principle is that the conical thread is arranged below the quick-change drill bushing 4, and 3 grooves are arranged at the thread part, so that the drill bits 6 can be screwed and fixed), thereby forming the combination of the drill bushing 4 and the drill bit 6, when the combination is not operated or not installed, the steel ball sheath 2 slides down due to the action of gravity to block the steel ball 3, thereby preventing the steel ball 3 from falling off,
according to the size of the aperture to be processed, selecting a proper combination, namely a quick-change drill bushing 4 and a drill bit 6, and pushing the combination upwards into the main shaft 1 of the drilling machine and into the position shown in FIG. 2; with the combination moving upwards, the sheath 2 is pushed to the position shown in fig. 2, so that 3 steel balls 3 enter the quick-change drill bushing 4, the quick-change drill bushing 4 is dragged and the machine tool is started, and the steel balls 3 slide on the main shaft 1 of the machine tool along with the rotation of the machine tool. Because the main shaft 1 is provided with 3 grooves from deep to shallow, the steel ball 3 slides in the groove of the main shaft 1 from deep to shallow, the steel ball 3 is forced to move outwards, and the drill sleeve 4 and the drill bit 6 are combined and fixed on the main shaft 1, and then the parts can be drilled. After the parts are drilled, the machine tool is reversed, the drill bushing 4 and the drill bit 6 are dragged by hands, the steel ball 3 reversely rotates on the main shaft due to the reversal of the machine tool, the steel ball 3 slides from shallow to deep in the upper groove of the main shaft of the machine tool, and equivalently, the steel ball 3 moves towards the main shaft, so that the constraint force of the combination of the drill bushing 4 and the drill bit 6 is relieved. At this time, the combination of the drill bushing 4 and the drill bit 6 can be taken down, and then the combination of the drill bushing 4 and the drill bit 6 with different specifications can be changed to drill different apertures.
Claims (4)
1. The utility model provides a bench drill bit quick change device, includes drilling machine main shaft (1), its characterized in that: three long grooves are formed in the drilling machine spindle (1) in the circumferential direction, the depth of each long groove is gradually increased from one end to the other end of each long groove, a steel ball (3) is arranged in each long groove, a steel ball sheath (2) is sleeved on the drilling machine spindle (1) beside the three long grooves, and a gap is reserved between the steel ball sheath (2) and the drilling machine spindle (1) so that the three long grooves can be covered or exposed; the drill bit is characterized by further comprising at least two hollow quick-change drill bushings (4), wherein conical threads are arranged on the outer wall of the bottom of each quick-change drill bushing (4), three through grooves are formed in the outer wall of the bottom of each quick-change drill bushing (4) in the radial direction, a drill bit (6) is mounted on the inner wall of the bottom of each quick-change drill bushing (4), and a locking nut (5) is mounted at the conical threads on the outer wall of the bottom of each quick-change drill bushing (4), so that the inner wall of the bottom of each quick-change drill bushing (4) can clamp the drill bit (6) tightly by screwing the locking nut.
2. The drill bit quick change device for a bench drill as defined in claim 1, wherein: the three long grooves are arranged on the same plane vertical to the drilling machine spindle (1) and are uniformly distributed in the circumferential direction of the drilling machine spindle (1).
3. The drill bit quick change device for a bench drill as defined in claim 1, wherein: wherein, the at least two quick-change drill bushings (4) specifically refer to two or more quick-change drill bushings (4) with different specifications.
4. The drill bit quick change device for a bench drill as defined in claim 1, wherein: the quick-change drill bushing (4) is sleeved on the drilling machine spindle (1) below the steel ball sheath (2), and a gap is reserved between the quick-change drill bushing (4) and the drilling machine spindle (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911112274.9A CN110756867B (en) | 2019-11-14 | 2019-11-14 | Quick bit changing device of bench drilling machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911112274.9A CN110756867B (en) | 2019-11-14 | 2019-11-14 | Quick bit changing device of bench drilling machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110756867A true CN110756867A (en) | 2020-02-07 |
| CN110756867B CN110756867B (en) | 2024-06-11 |
Family
ID=69338352
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911112274.9A Active CN110756867B (en) | 2019-11-14 | 2019-11-14 | Quick bit changing device of bench drilling machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110756867B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2926020A (en) * | 1958-01-02 | 1960-02-23 | Pacific Tool And Mfg Co | Quick-change chuck |
| CN2584917Y (en) * | 2002-12-13 | 2003-11-05 | 胡秋庆 | Stop nut able to preventing dismount |
| US20160311032A1 (en) * | 2015-04-22 | 2016-10-27 | Roehm Gmbh | Precision clamping system |
| CN209107250U (en) * | 2018-09-21 | 2019-07-16 | 程佳悦妍 | A kind of telescopic mop lever lock locking structure |
| CN212042820U (en) * | 2019-11-14 | 2020-12-01 | 西北轴承有限公司 | Quick change device for drill bit of bench drilling machine |
-
2019
- 2019-11-14 CN CN201911112274.9A patent/CN110756867B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2926020A (en) * | 1958-01-02 | 1960-02-23 | Pacific Tool And Mfg Co | Quick-change chuck |
| CN2584917Y (en) * | 2002-12-13 | 2003-11-05 | 胡秋庆 | Stop nut able to preventing dismount |
| US20160311032A1 (en) * | 2015-04-22 | 2016-10-27 | Roehm Gmbh | Precision clamping system |
| CN209107250U (en) * | 2018-09-21 | 2019-07-16 | 程佳悦妍 | A kind of telescopic mop lever lock locking structure |
| CN212042820U (en) * | 2019-11-14 | 2020-12-01 | 西北轴承有限公司 | Quick change device for drill bit of bench drilling machine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110756867B (en) | 2024-06-11 |
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