CN212042820U - Quick change device for drill bit of bench drilling machine - Google Patents
Quick change device for drill bit of bench drilling machine Download PDFInfo
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- CN212042820U CN212042820U CN201921969106.7U CN201921969106U CN212042820U CN 212042820 U CN212042820 U CN 212042820U CN 201921969106 U CN201921969106 U CN 201921969106U CN 212042820 U CN212042820 U CN 212042820U
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- quick
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- drill bit
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Abstract
The utility model relates to a bench drill bit quick change device. 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 utility model relates to a bench drill bit quick change device.
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.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a bench drill bit quick change device can show the machining efficiency when improving multiple aperture of drilling, big batch product.
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.
Wherein, the at least two quick-change drill bushings specifically refer to more than two 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.
Through the proof on probation, adopt the utility model discloses after the device, realized the quick replacement drill bit, changed the drill bit on ordinary drilling machine about 1 minute, and utilize the quick change chuck only to need 3 seconds, improved production efficiency widely to only need once the manual clamping during the change, reduced workman's intensity of labour.
Drawings
FIG. 1 is a schematic structural diagram of a steel ball sheath 2 and a steel ball 3 in the utility model;
fig. 2 is a schematic view of the usage state of the present invention.
Detailed Description
As shown in fig. 1, the utility model provides a bench drill bit quick change device, including drilling machine main shaft 1, be equipped with three elongated slots along the circumferencial direction on this drilling machine main shaft 1 to its degree of depth from one end of every elongated slot to the other end increases gradually, be equipped with a steel ball 3 in every elongated slot, still overlap on the drilling machine main shaft 1 by this three elongated slot and be equipped with steel ball sheath 2, leave the clearance between this steel ball sheath 2 and drilling machine main shaft 1 and thus can cover or expose aforementioned 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 utility model discloses a use method and theory of operation are:
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 more than two 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 |
|---|---|---|---|
| CN201921969106.7U CN212042820U (en) | 2019-11-14 | 2019-11-14 | Quick change device for drill bit of bench drilling machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921969106.7U CN212042820U (en) | 2019-11-14 | 2019-11-14 | Quick change device for drill bit of bench drilling machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212042820U true CN212042820U (en) | 2020-12-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921969106.7U Active CN212042820U (en) | 2019-11-14 | 2019-11-14 | Quick change device for drill bit of bench drilling machine |
Country Status (1)
| Country | Link |
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| CN (1) | CN212042820U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110756867A (en) * | 2019-11-14 | 2020-02-07 | 西北轴承有限公司 | Quick change device for drill bit of bench drilling machine |
-
2019
- 2019-11-14 CN CN201921969106.7U patent/CN212042820U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110756867A (en) * | 2019-11-14 | 2020-02-07 | 西北轴承有限公司 | Quick change device for drill bit of bench drilling machine |
| CN110756867B (en) * | 2019-11-14 | 2024-06-11 | 西北轴承有限公司 | Quick bit changing device of bench drilling machine |
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