CN206839248U - A kind of composite cutter that drills and reams of big L/D ratio - Google Patents
A kind of composite cutter that drills and reams of big L/D ratio Download PDFInfo
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- CN206839248U CN206839248U CN201720631536.2U CN201720631536U CN206839248U CN 206839248 U CN206839248 U CN 206839248U CN 201720631536 U CN201720631536 U CN 201720631536U CN 206839248 U CN206839248 U CN 206839248U
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- cutting edge
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- cooling
- cutter
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Abstract
The utility model discloses a kind of composite cutter that drills and reams of big L/D ratio, and it includes cutter hub and the handle of a knife coaxial with cutter hub；Center line offers main water-cooling channel to the handle of a knife vertically, and cutter hub interior edge longitudinal center line is provided with two parallel secondary water-cooling channels, and the main water-cooling channel is connected with two secondary water-cooling channels；The cutter hub is provided with even number bar cutting edge, the cutting edge includes the main cutting edge being centrosymmetric and/or the front cutting edge that is centrosymmetric, each main cutting edge is embedded with a drill, each main cutting edge and/or front cutting edge in the preceding drilling section and is embedded with a reamer in middle part fraising section；The secondary water-cooling channel external peripheral surface in the fraising portion is provided with the water cooling hole corresponding with reamer, and the water cooling hole extends inwardly to be connected with secondary water-cooling channel.The utility model improves processing efficiency and machining accuracy, and ensure that good processing effect.
Description
Technical field
The utility model belongs to cutter manufacture technical field, and in particular to a kind of composite cutter that drills and reams of big L/D ratio.
Background technology
Prior art is generally first drilled with drill when processing precasting blind hole, then is reamed with reamer, and two knives can not be same
Shi Jiagong, waste time and energy.And easily occurring shake knife phenomenon during reamer fraising, processing is unstable.And knife of the prior art
Tool cooling effect is bad, and the precision of processing is not high, and shrinkage cavity phenomenon easily occurs in the hole after processing.
CN202162425U discloses a kind of drill reamer, including shank and blade, and the blade is provided with side edge, side
Two seamed edges of sword are respectively to be oriented to seamed edge and drilling seamed edge, it is characterised in that be provided with the knife back of the side edge two it is parallel
Groove, the joint of two parallel grooves form ream seamed edge.Although the drill reamer will bore above-mentioned cutter
Knife and reamer can improve operating efficiency after being combined together, but the cooling effect of cutter is bad, can influence the processing effect in hole
Fruit.
Utility model content
The purpose of this utility model is the composite cutter that drills and reams for providing a kind of big L/D ratio, when the cutter solves fraising
Shake knife, shrinkage cavity and the problems such as cooling and processing efficiency are low.
To achieve the above object, the utility model uses following technical scheme：
A kind of composite cutter that drills and reams of big L/D ratio, including cutter hub and the handle of a knife coaxial with cutter hub.
Center line offers main water-cooling channel to the handle of a knife vertically, cutter hub interior edge longitudinal center line be provided with two it is parallel
Secondary water-cooling channel, the main water-cooling channel are connected with two secondary water-cooling channels；Further, in two secondary water-cooling channels
The heart is symmetrical with longitudinal center line.
The cutter hub includes the preceding drilling section of coaxial one, middle part fraising section and rear linkage section；Further, before described
The external diameter for the section that drills is less than the external diameter of middle part fraising section.
The cutter hub is provided with even number bar cutting edge, during the cutting edge includes the main cutting edge being centrosymmetric and/or is in
The symmetrical front cutting edge of the heart.
Further, the cutter hub is provided with two main cutting edges and two front cutting edges, the main cutting edge and secondary cutting
Sword is arranged at intervals.Main cutting groove, the knife back and the pair of the main cutting edge are formed between the knife back and main cutting edge of the secondary bite
Secondary cutting slot is formed between cutting edge.
Each main cutting edge is embedded with a drill, each main cutting edge and/or secondary cutting in the preceding drilling section
Sword is embedded with a reamer in middle part fraising section；The drill and reamer are straight sword.
The secondary water-cooling channel external peripheral surface in the fraising portion is provided with the water cooling hole corresponding with reamer, the water cooling hole to
Inside extend to and be connected with secondary water-cooling channel.
The beneficial effects of the utility model：
1）A kind of drilling and reaming for big L/D ratio of the utility model while is provided with drill and reamer at composite cutter, and two knives are combined into
One knife, the process time of half is saved, improves the efficiency of processing, while also save the manufacturing cost of cutter.
2）Drill is compound with reamer, avoid and occur the phenomenon of shake knife during fraising.
3）The certain surplus of drill elder generation drilling of preceding drilling section, the section reamer of middle part fraising afterwards carry out the hinge of small surplus again
Cut, drilling and reaming is processed simultaneously, ensure that concentricity, so as to also improve the precision of hole machined.
4）Cutter hub is provided with two secondary water-cooling channels and water cooling hole, improves cooling effectiveness during reamer fraising, while
The Shrinkage Problem caused by cooling down deficiency after holes drilled through is avoided, improves the stability of processing；And solve to a certain extent
The chip removal problem determined when drilling and reaming blind hole.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model；
Fig. 2 is the partial enlarged drawing at A in Fig. 1；
Fig. 3 is the sectional view at B in Fig. 2；
Fig. 4 is the sectional view at C in Fig. 2；
Fig. 5 is the sectional view at D in Fig. 2；
Fig. 6 is the sectional view at E in Fig. 2.
Embodiment
A kind of composite cutter that drills and reams of big L/D ratio, as shown in figures 1 to 6, including cutter hub and the handle of a knife 4 coaxial with cutter hub.
In the present embodiment, center line offers main water-cooling channel 9 to the handle of a knife 4 vertically, and the main afterbody of water-cooling channel 9 is provided with
Counterbore；Cutter hub interior edge longitudinal center line is provided with two parallel secondary water-cooling channels 8, the main water-cooling channel 9 and two secondary water coolings
Passage 8 is connected；Further, the described two secondary Central Symmetries of water-cooling channel 8 are in longitudinal center line.
The cutter hub includes the preceding drilling section 1 of coaxial one, middle part fraising section 2 and rear linkage section 3；Drilling section before described
1 external diameter is less than the external diameter of middle part fraising section 2.The afterbody of linkage section 3 and the solder joints of handle of a knife 4 after described.
In the present embodiment, the cutter hub is provided with 4 cutting edges, and the cutting edge includes two main cuttings being centrosymmetric
Sword and two front cutting edges being centrosymmetric, the main cutting edge and front cutting edge are arranged at intervals；Each main cutting edge exists
Drilling section 1 is embedded with a drill 5, each main cutting edge and front cutting edge and is embedded with middle part fraising section 2 before described
One reamer 6, the drill 5 and reamer 6 are straight sword；Periphery between the drill 5 and reamer 6 is oriented to 10 for first, institute
The periphery stated between reamer 6 and linkage section 3 is oriented to 11 for second.Described first, which is oriented to 10, can make drill 5 keep drill bit just
Straight drilling direction, described second, which is oriented to 11, is keeping can also having smoothing hole wall on the basis of the fraising of reamer 6 direction is honest
Effect.
Main cutting groove 13 is formed between the knife back and main cutting edge of the secondary bite, the knife back and the pair of the main cutting edge are cut
Cut and form secondary cutting slot 14 between sword.
In the present embodiment, the fraising portion 2 is provided with the water cooling hole 7 corresponding with reamer 6, and the 7 secondary water cooling of water cooling hole is led to
Road 8 is connected.Described two Central Symmetries of water cooling hole 7 are in cutter hub longitudinal center line.
In the present embodiment, the length of the cutter hub is L, and reamer external diameter is D, L/D ＞ 10.
During processing, according to the direction of rotation for the composite cutter that drills and reams, the drill 5 first on main cutting edge touches workpiece progress
Drilling, then as the rotation of cutter, the alternately drilling of drill 5 on main cutting edge, cooling water is led to by main water-cooling channel 9
Two secondary water-cooling channel 8 cools down to two drills 5；Then as cutter drilling promotes along boring direction, reamer 6 contacts work
Part carries out ream, and 4 reamers 6 are cooled down simultaneously by two secondary water-cooling channels 8 and water cooling hole 7；Main cutting groove 13 and pair are cut
Cut groove 14 and undertake chip removal function.Drill and reamer are not only combined into a knife, save the process time of half, improves and adds
The efficiency of work, and cutter hub is provided with two secondary water-cooling channels 8 and water cooling hole 7, improves cooling effectiveness when reamer 6 reams,
While it also avoid the Shrinkage Problem caused by cooling down deficiency after holes drilled through.
The present embodiment is only the preferred embodiment for processing precasting blind hole of the draw ratio more than 10, not limiting this practicality
New protection domain.It will be understood by those within the art that the technical solution of the utility model is modified or
Person's equivalent substitution, without departing from the spirit and scope of technical solutions of the utility model.
Claims (4)
1. a kind of composite cutter that drills and reams of big L/D ratio, including cutter hub and the handle of a knife coaxial with cutter hub, it is characterised in that：
Center line offers main water-cooling channel to the handle of a knife vertically, and cutter hub interior edge longitudinal center line is provided with two parallel secondary water
Cold passage, the main water-cooling channel are connected with two secondary water-cooling channels；
The cutter hub includes the preceding drilling section of coaxial one, middle part fraising section and rear linkage section；
The cutter hub is provided with even number bar cutting edge, and the cutting edge includes the main cutting edge being centrosymmetric and/or in center pair
Claim front cutting edge, each main cutting edge is embedded with a drill in the preceding drilling section, and each main cutting edge and/or pair are cut
Cut sword and be embedded with a reamer in middle part fraising section；
The secondary water-cooling channel external peripheral surface in the fraising portion is provided with the water cooling hole corresponding with reamer, and the water cooling hole is inwardly prolonged
Extend and be connected with secondary water-cooling channel.
2. the composite cutter that drills and reams of big L/D ratio according to claim 1, it is characterised in that：The cutter hub is cut provided with two masters
Sword and two front cutting edges are cut, the main cutting edge and front cutting edge are arranged at intervals；The drill and reamer are straight sword.
3. the composite cutter that drills and reams of big L/D ratio according to claim 2, it is characterised in that：The external diameter of drilling section is small before described
In the external diameter of middle part fraising section.
4. the composite cutter that drills and reams of big L/D ratio according to claim 3, it is characterised in that：In two secondary water-cooling channels
The heart is symmetrical with longitudinal center line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720631536.2U CN206839248U (en) | 2017-06-02 | 2017-06-02 | A kind of composite cutter that drills and reams of big L/D ratio |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720631536.2U CN206839248U (en) | 2017-06-02 | 2017-06-02 | A kind of composite cutter that drills and reams of big L/D ratio |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206839248U true CN206839248U (en) | 2018-01-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720631536.2U Active CN206839248U (en) | 2017-06-02 | 2017-06-02 | A kind of composite cutter that drills and reams of big L/D ratio |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206839248U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109014351A (en) * | 2018-07-23 | 2018-12-18 | 中山市园丰精密刃具有限公司 | One kind drills and reams combination forming knife |
-
2017
- 2017-06-02 CN CN201720631536.2U patent/CN206839248U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109014351A (en) * | 2018-07-23 | 2018-12-18 | 中山市园丰精密刃具有限公司 | One kind drills and reams combination forming knife |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20191224 Address after: 610100 No.88, quanbai Road, Baihe Town, Chengdu Economic and Technological Development Zone (Longquanyi District), Sichuan Province Patentee after: Chengdu pulse Pml Precision Mechanism Ltd Address before: 450016 No. seventh, 198 Avenue, Zhengzhou economic and Technological Development Zone, Henan Patentee before: Zhengzhou Diamond Precision Manufacturing Co., Ltd. |
|
| TR01 | Transfer of patent right |