CN209698106U - A kind of spiral bit - Google Patents
A kind of spiral bit Download PDFInfo
- Publication number
- CN209698106U CN209698106U CN201920444188.7U CN201920444188U CN209698106U CN 209698106 U CN209698106 U CN 209698106U CN 201920444188 U CN201920444188 U CN 201920444188U CN 209698106 U CN209698106 U CN 209698106U
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- drillstock
- cavity
- shank
- spiral
- drill bit
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Abstract
The utility model discloses a kind of spiral bit, including staight shank, staight shank includes connection handle and support shank, and connection handle and support shank design for integral type；Connector is provided on connection handle；It is provided with cavity in support shank, drillstock, the underrun spring connection of drillstock and cavity are provided in cavity, drillstock surface is provided with rubber layer, and drillstock has drill bit far from one end unitary design of spring, is provided with cutting edge and blade on drill bit；Fixed device is cased with outside support shank, fixed device includes support frame and bearing, is provided with screw thread on support frame；Spring can play the role of certain bradyseism, and the drill bit when carrying out the processing of strong hardness substance is prevented to be broken；Blade is fixed at bit face in the cutting edge hand of spiral, can carry out chip breaking to chip；Fixed device and support shank are rotatablely connected by bearing, are reduced due to the too long caused run-out tolerance of the length of the bit.
Description
Technical field
The utility model relates to technical field of machining tools more particularly to a kind of spiral bits.
Background technique
Fluted drill is the cutter processed the cutter to portal from solid material, and be most widely used in aperture knife tool.Fiber crops
It is the rotary cutting by its relatively fixed axis with the tool of the circular hole of drilling workpiece that flower, which bores, due to its chip pocket is spiral
It is similar to fried dough twist and gains the name；Fluted drill can be clamped in manual, electric hand fluted drill and hold formula boring bar tool or drilling machine, milling machine, vehicle
It is used on bed or even machining center；Fluted drill is widely used in each department such as automobile manufacture, logistics, mold, machinery at present, by
It is more and more wider to the application of various aspects in it, so requiring also to increase therewith for application aspect；The common fried dough twist in market at present
The left and right cutting edge of drill bit is asymmetric, and run-out tolerance is big, and main cutting edge is very long, is unfavorable for point bits and a chip breaking, due also to the length of drill bit
Longer, when carrying out the processing of strong hardness substance, drill bit may be broken, so being badly in need of researching and developing a kind of spiral bit.
Utility model content
Purpose of the utility model is to solve the left and right cutting edge asymmetry of fried dough twist drill bit in traditional technology, run-out tolerances
Greatly, main cutting edge is very long, is unfavorable for point bits and a chip breaking, due also to the length of drill bit is longer, when carrying out the processing of strong hardness substance
The problem of drill bit may be broken, and a kind of spiral bit proposed.
To achieve the goals above, the utility model adopts the technical scheme that
A kind of spiral bit, including staight shank, the staight shank include connection handle and support shank, the connection handle and the support
Handle designs for integral type；Connector is provided on the connection handle；Cavity, setting in the cavity are provided in the support shank
There is drillstock, the drillstock is connect with the underrun spring of the cavity, and the drillstock surface is provided with rubber layer, the drillstock
One end unitary design far from the spring has drill bit, is provided with cutting edge and blade on the drill bit；Outside the support shank
It is cased with fixed device, the fixed device includes support frame and bearing, is provided with screw thread on support frame as described above.
Preferably, the spring that the drillstock is fixedly connected with the cavity floor sets at least to one, described
When drill bit carries out operation, the spring can play the role of bradyseism, prevent the drill bit from occurring in strong hardness conditional operation disconnected
It splits.
Preferably, the rubber layer of the drillstock surface setting and the cavity inner wall are in close contact, the rubber layer surface
It is provided with rubber grain.
Preferably, under the drill bit stationary state, the drillstock is pierced by outside the cavity about 50mm, the spring
In the drill bit stationary state, length is about 45mm.
Preferably, the cutting edge is spiral shape, and the cutting edge uses high speed steel material, and the blade is in the cutting
The sword hand of spiral is fixed at bit face, and the width of the blade is less than the width of the cutting edge, and the blade uses
PCB material, the blade set at least to one, and blade can carry out chip breaking to chip.
Preferably, support frame as described above is that integral type connects with the bearing, and the fixed device passes through with the support shank
Bearing rotation connection.
Preferably, the fixed device is in door shape, and the fixed device is fixedly connected with the drilling by screw thread.
Compared with prior art, the utility model has following advantages:
1, cavity is provided in support shank, the drillstock in cavity is connect with cavity floor by spring, when drill bit carries out work
When making, spring can play the role of certain bradyseism, and the drill bit when carrying out the processing of strong hardness substance is prevented to be broken.
2, it is provided with PCB blade on drill bit, blade is fixed at bit face in the cutting edge hand of spiral, can be to cutting
Bits carry out chip breaking.
3, fixed device is cased with outside support shank, fixed device and support shank are rotatablely connected by bearing, are reduced due to boring
Run-out tolerance caused by head length is too long.
Detailed description of the invention
Fig. 1 be the utility model proposes a kind of spiral bit structural schematic diagram；
Fig. 2 is the structure enlargement diagram of the part a in the utility model.
In figure: 1 staight shank, 2 connection handles, 3 support shanks, 4 cavitys, 5 drillstocks, 6 springs, 7 rubber layers, 8 drill bits, 9 fixed dresses
It sets, 10 cutting edges, 11 blades, 21 connectors, 91 support frames, 92 bearings, 93 screw threads.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.
Referring to figs. 1 to Fig. 2, a kind of spiral bit, including staight shank 1, staight shank 1 include connection handle 2 and support shank 3, connection handle 2
It is designed with support shank 3 for integral type；Connector 21 is provided on connection handle 2；It is provided with cavity 4 in support shank 3, is set in cavity 4
It is equipped with drillstock 5, drillstock 5 is connect with the underrun spring 6 of cavity 4, and 5 surface of drillstock is provided with rubber layer 7, and drillstock 5 is far from bullet
One end unitary design of spring 6 has drill bit 8, and cutting edge 10 and blade 11 are provided on drill bit 8；Fixed dress is cased with outside support shank 3
9 are set, fixed device 9 includes support frame 91 and bearing 92, is provided with screw thread 93 on support frame 91.
The spring 6 that drillstock 5 is fixedly connected with 4 bottom surface of cavity sets at least to one；The rubber layer 7 of 5 surface of drillstock setting
It is in close contact with 4 inner wall of cavity, 7 surface of rubber layer is provided with rubber grain；Under 8 stationary state of drill bit, drillstock 5 is pierced by cavity
About 50mm outside 4, the length in 8 stationary state of drill bit of spring 6 is about 45mm；Cutting edge 10 is spiral shape, and cutting edge 10 uses
High speed steel material, blade 11 are fixed at 8 surface of drill bit in 10 hand of spiral of cutting edge, and the width of blade 11 is less than cutting edge
10 width, blade 11 use PCB material, and blade 11 sets at least to one；Support frame 91 and bearing 92 are integral type company
It connects, fixed device 9 is rotatablely connected with support shank 3 by bearing 92；Fixed device 9 is in door shape, and fixed device 9 passes through screw thread 93
It is fixedly connected with the drilling.
Now the operating principle of the utility model is done described below:
When the utility model is used by 21 device of connector on drilling machine head, fixed device 9 by screw thread 93 and is bored
Machine is fixedly connected；Drilling machine is started to work, and staight shank 1 is driven to rotate, since 4 inner wall of cavity in drillstock 5 and staight shank 1 passes through rubber layer
7 squeeze contact, and 7 surface of rubber layer is provided with rubber grain, since the pressure effect rotation of staight shank 1 drives drill bit 8 to rotate, due to
Drillstock 5 is connect with 4 underrun spring 6 of cavity, and when drill bit 8 is worked, spring 6 can play the role of certain bradyseism, is prevented
When carrying out the processing of strong hardness substance, drill bit device is broken；PCB blade 11 is provided on drill bit 8, blade 11 is in cutting edge
10 hands of spiral are fixed at 8 surface of drill bit, can carry out chip breaking to chip；It is cased with fixed device 9 outside support shank 5, it is fixed
Device 9 is rotatablely connected with support shank 5 by bearing 92, is reduced due to the too long caused run-out tolerance of drill bit device length.
In the present invention unless specifically defined or limited otherwise, term " sliding ", " fixation ", " is set " rotation "
Have " etc. terms shall be understood in a broad sense, for example, it may be being welded to connect, be also possible to be bolted, or integral；It can be machine
Tool connection, is also possible to be electrically connected；It can be directly connected, two members can also be can be indirectly connected through an intermediary
The interaction relationship of connection or two elements inside part, unless otherwise restricted clearly.For the ordinary skill of this field
For personnel, the concrete meaning of above-mentioned term in the present invention can be understood as the case may be.
The preferable specific embodiment of the above, only the utility model, but the protection scope of the utility model is not
It is confined to this, anyone skilled in the art is within the technical scope disclosed by the utility model, practical according to this
Novel technical solution and its utility model design are subject to equivalent substitution or change, should all cover the protection model in the utility model
Within enclosing.
Claims (7)
1. a kind of spiral bit, including staight shank (1), which is characterized in that the staight shank (1) includes connection handle (2) and support shank
(3), the connection handle (2) and the support shank (3) design for integral type；Connector (21) are provided on the connection handle (2)；
It is provided with cavity (4) in the support shank (3), is provided with drillstock (5) in the cavity (4), the drillstock (5) and the cavity
(4) underrun spring (6) connection, drillstock (5) surface are provided with rubber layer (7), and the drillstock (5) is far from the bullet
One end unitary design of spring (6) has drill bit (8), is provided with cutting edge (10) and blade (11) on the drill bit (8)；The branch
It is cased with fixed device (9) outside support handle (3), the fixed device (9) includes support frame (91) and bearing (92), support frame as described above
(91) screw thread (93) are provided on.
2. a kind of spiral bit according to claim 1, which is characterized in that the drillstock (5) and the cavity (4) bottom surface
The spring (6) being fixedly connected sets at least to one.
3. a kind of spiral bit according to claim 1, which is characterized in that the rubber layer of drillstock (5) the surface setting
(7) it is in close contact with the cavity (4) inner wall, rubber layer (7) surface is provided with rubber grain.
4. a kind of spiral bit according to claim 1, which is characterized in that described under the drill bit (8) stationary state
It is about 50mm that drillstock (5) is pierced by the cavity (4) outside, and the spring (6) length in the drill bit (8) stationary state is about
45mm。
5. a kind of spiral bit according to claim 1, which is characterized in that the cutting edge (10) is spiral shape, described
Cutting edge (10) uses high speed steel material, and the blade (11) is fixed at drill bit in the cutting edge (10) hand of spiral
(8) surface, the width of the blade (11) are less than the width of the cutting edge (10), and the blade (11) uses PCB material, institute
It states blade (11) and sets at least to one.
6. a kind of spiral bit according to claim 1, which is characterized in that support frame as described above (91) and the bearing (92)
For integral type connection, the fixed device (9) and the support shank (3) are rotatablely connected by bearing (92).
7. a kind of spiral bit according to claim 1, which is characterized in that the fixed device (9) is in door shape, described
Fixed device (9) are fixedly connected with the drilling by screw thread (93).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920444188.7U CN209698106U (en) | 2019-04-03 | 2019-04-03 | A kind of spiral bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920444188.7U CN209698106U (en) | 2019-04-03 | 2019-04-03 | A kind of spiral bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209698106U true CN209698106U (en) | 2019-11-29 |
Family
ID=68648661
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920444188.7U Active CN209698106U (en) | 2019-04-03 | 2019-04-03 | A kind of spiral bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209698106U (en) |
-
2019
- 2019-04-03 CN CN201920444188.7U patent/CN209698106U/en active Active
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