CN210848486U - Clamping device capable of adjusting cutting diameter of drill bit - Google Patents
Clamping device capable of adjusting cutting diameter of drill bit Download PDFInfo
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- CN210848486U CN210848486U CN201921984986.5U CN201921984986U CN210848486U CN 210848486 U CN210848486 U CN 210848486U CN 201921984986 U CN201921984986 U CN 201921984986U CN 210848486 U CN210848486 U CN 210848486U
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Abstract
The utility model discloses a clamping device of adjustable drill bit cutting diameter. The clamping device comprises a cutting tool bar, a threaded pin, a supporting rod, a nut and a tool bar; the cutter bar is a horizontally placed round bar, the front end of the cutter bar is provided with a vertical cutter bar mounting groove, and 2 cutting cutter bars are vertically and symmetrically mounted in the cutter bar mounting groove; 2 symmetrically distributed support rods vertical to the tool bar mounting groove are mounted at the position, close to the tool bar mounting groove, of the front section of the tool bar, the support rods are connected with the tool bar through threads and then locked through nuts, and the heads of the support rods are ball heads; the cutting blade tips of the 2 cutting tool bars and the ball head top points of the 2 supporting rods are positioned on the same circumference. The clamping device adjusts the radius of the cutting edge tip of the cutting blade bar by changing the positions of threaded pins which sequentially penetrate through threaded pin holes in the cutter bar and pin holes in the cutting blade bar. The clamping device can adjust the cutting diameter of the drill according to the size of the machining hole, and has the advantages of low cost, high efficiency and simplicity and convenience in operation.
Description
Technical Field
The utility model belongs to the technical field of machining, concretely relates to clamping device of adjustable drill bit cutting diameter.
Background
The drill bit diameter of common machining is fixed, in order to satisfy the processing demand, the different drill bits of change diameter that must not stop in the course of working lead to machining efficiency low, and is with high costs, and at present, need to develop the adjustable drill bit cutting diameter's that can the engineering was used clamping device and come raise the efficiency, reduce cost.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a clamping device of adjustable drill bit cutting diameter is provided.
The utility model discloses a clamping device for adjusting the cutting diameter of a drill bit, which is characterized in that the clamping device comprises a cutting tool bar, a threaded pin, a support rod, a nut and a cutter bar; the cutter bar comprises a cutter bar main body, a cutter bar main body and a cutter bar, wherein the cutter bar main body is a horizontally placed round bar, the front end of the cutter bar is provided with a cutter bar mounting groove in the vertical direction, the inner side of the cutter bar mounting groove is provided with a vertical reference surface I and a vertical reference surface II which are symmetrically distributed on two sides of the axis of the cutter bar, the inner side of the cutter bar mounting groove is also provided with a reference surface III which is perpendicular to the axis of the cutter bar, the outer side of the cutter bar mounting groove is provided with a plane I and a plane II, the plane I is parallel to the; the rear end of the cutter bar is provided with a Mohs taper assembled with a machine tool; a cooling liquid channel is arranged on the central axis of the cutter bar, a conical threaded hole communicated with the cooling liquid channel is further formed in the cutter bar, the conical threaded hole is externally connected with a cooling liquid pipeline, and the cooling liquid pipeline is communicated with a cooling system; 2 symmetrically distributed support rods vertical to the axis of the cutter bar are arranged at the front section of the cutter bar close to the cutter bar mounting groove, the support rods are connected with the cutter bar through threads and then locked through nuts, and the heads of the support rods are ball heads;
the number of the cutting knife strips is 2, the cutting knife strip positioned above is a cutting knife strip I, the cutting knife strip positioned below is a cutting knife strip II, the cutting knife strip I and the cutting knife strip II are vertically and symmetrically arranged in a knife strip installation groove at the front end of the knife bar, namely the cutting knife strip I and the cutting knife strip II are both positioned through a datum plane I and a datum plane III, or the cutting knife strip I and the cutting knife strip II are both positioned through a datum plane II and a datum plane III, one side, attached to the datum plane I, of the cutting knife strip I is provided with a group of 4 pin holes I, the hole distance of the pin holes I is L1, the other side, attached to the datum plane II, of the cutting knife strip I is provided with a group of 4 pin holes II, the hole distance of the pin holes II is L2, one side, attached to the datum plane I, of the cutting knife strip II is provided with a group of 4 pin holes III, the hole distance of the pin holes III is L1, the other side, attached to the datum plane II, is provided with a group of 4 pin holes IV, the pin holes IV is L2, the pin hole distance of the pin holes I is 38732, and the central axis of the;
the plane I is provided with an upper group of threaded pin holes and a lower group of threaded pin holes, the upper group of threaded pin holes I correspond to pin holes I on a cutting tool bar I, the lower group of threaded pin holes III correspond to pin holes III on a cutting tool bar II, the cutting tool bar I and the cutting tool bar II are respectively fixed on a reference plane I in a mode of screwing threaded pins in the threaded pin holes, the plane II is provided with an upper group of threaded pin holes and a lower group of threaded pin holes, the upper group of threaded pin holes II correspond to pin holes II on the cutting tool bar I, the lower group of threaded pin holes IV correspond to pin holes IV on the cutting tool bar II, and the cutting tool bar I and the cutting tool bar II are respectively fixed on the reference plane II in a mode of screwing threaded pins in the threaded pin holes I and the threaded pin holes II, the central axis distance between the threaded pin holes I and the threaded pin holes II is △ L2, and the central axis distance between the threaded pin holes I and the threaded pin holes IV is △ L2;
the cutting blade tips of the 2 cutting tool bars and the ball head top points of the 2 supporting rods are positioned on the same circumference.
The cooling liquid channel is forked at a position close to the cutting tool strip, and the forked positions respectively point to the cutting tool strip I, the cutting tool strip II and the workpiece.
The cutting tool bar is made of high-speed steel, or a hard alloy blade is welded at the edge part of the cutting tool bar.
And the pin holes on the cutting tool bars are machined by adopting electric sparks.
The bulb of bracing piece material be YG8 carbide, the bulb welding is at the top of bracing piece.
The material of the cutter bar is 40 Cr.
The Moire taper of the cutter bar is No. 5 Moire taper or No. 6 Moire taper.
The height of the plane I and the plane II on the cutter bar is larger than the diameter of a round rod of the cutter bar.
The structure of the cutter bar is replaced by a clamping head with a cutter bar mounting groove, a reference surface I, a reference surface II, a reference surface III, a plane I and a plane II at the front end, the middle section is a round rod, and the rear end is a conical rod with Morse taper; the clamping head and the round rod are welded and fixed, and the round rod and the conical rod are integrally manufactured.
The clamping device for adjusting the cutting diameter of the drill bit achieves the purpose of adjusting the cutting diameter of the drill bit by adjusting the position of the threaded pin; the cutting tool bar is cooled by the cooling liquid, so that heat generated by cutting is taken away, and the wear resistance of the cutting tool bar is improved; the cutting tool bar is fixed and positioned by the threaded pin, so that the stability of the cutting diameter of the drill bit in the machining process is effectively guaranteed, and the precision of a machined hole is improved.
The utility model discloses a rear end of the cutter arbor in adjustable drill bit cutting diameter's clamping device is processed into No. 5 mo formula tapering or No. 6 mo formula tapering, both can satisfy the lathe and can satisfy the boring machine operation requirement again. The cutter arbor adopts 40Cr preparation, has improved cutter arbor intensity, has reduced the cutter arbor and has add the vibration of man-hour, has improved the precision of processing the hole.
The clamping device for adjusting the cutting diameter of the drill bit of the utility model adjusts the length of the supporting rod through the screw thread, ensures that the ball head top point of the supporting rod and the cutting blade tip of the cutting blade are positioned on the same circumference, the supporting rod plays a role of supporting an inner hole, and the aim of shock absorption can be achieved during drilling; after the supporting rod is connected with the cutter bar by the screw thread, the supporting rod is locked by the nut, so that the firm and reliable connection between the supporting rod and the cutter bar is ensured; the ball head of the supporting rod is made of YG8 hard alloy and is welded with the supporting rod, so that the wear resistance of the supporting rod is improved; the ball head of the supporting rod reduces the contact area of the supporting rod and the machining hole, reduces friction force and prevents the cutter bar from vibrating. The design of bracing piece has improved the precision in processing the hole.
The utility model discloses a cutting tool strip among adjustable drill bit cutting diameter's clamping device can take off the grinding blade fast, and is more convenient than the operation of whole drill bit grinding.
The utility model discloses an adjustable drill bit cutting diameter's clamping device can be according to the big or small adjustment drill bit cutting diameter of machined hole, has with low costs, efficient, advantage easy and simple to handle.
Drawings
Fig. 1 is a perspective view of the clamping device for adjusting the cutting diameter of a drill according to the present invention;
FIG. 2 is a schematic structural view of the clamping device for adjusting the cutting diameter of a drill according to the present invention;
FIG. 3 is a top view of FIG. 2;
FIG. 4 is a cross-sectional view A-A of FIG. 2;
FIG. 5 is a cross-sectional view B-B of FIG. 2;
fig. 6 is a cross-sectional view C-C of fig. 3.
In the figure, 1 is a cutting tool bar 2, a threaded pin 3, a support rod 4, a nut 5 and a tool bar.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings and examples.
Example 1
As shown in fig. 1 to 3, the clamping device for adjusting the cutting diameter of the drill bit of the present embodiment includes a cutting blade bar 1, a threaded pin 2, a support rod 3, a nut 4 and a cutter bar 5; the main body of the cutter bar 5 is a horizontally placed round bar, the front end of the cutter bar 5 is provided with a cutter bar installation groove in the vertical direction, the inner side of the cutter bar installation groove is provided with a vertical reference surface I and a vertical reference surface II which are symmetrically distributed on two sides of the axis of the cutter bar 5, the inner side of the cutter bar installation groove is also provided with a reference surface III which is perpendicular to the axis of the cutter bar 5, the outer side of the cutter bar installation groove is provided with a plane I and a plane II, the plane I is parallel to the reference surface I, and the plane II is parallel to the reference surface II; the rear end of the cutter bar 5 is provided with a Mohs taper assembled with a machine tool;
as shown in fig. 4, a cooling liquid channel is arranged on the central axis of the cutter bar 5, a conical threaded hole communicated with the cooling liquid channel is further formed on the cutter bar 5, the conical threaded hole is externally connected with a cooling liquid pipeline, and the cooling liquid pipeline is communicated with a cooling system;
as shown in fig. 5, 2 symmetrically distributed support rods 3 perpendicular to the axis of the cutter bar 5 are mounted at the front section of the cutter bar 5 near the cutter bar mounting groove, the support rods 3 are connected with the cutter bar 5 through threads and then locked through nuts 4, and the heads of the support rods 3 are ball heads;
the number of the cutting knife strips 1 is 2, the cutting knife strip 1 positioned above is a cutting knife strip I, the cutting knife strip 1 positioned below is a cutting knife strip II, the cutting knife strip I and the cutting knife strip II are vertically and symmetrically arranged in a knife strip installation groove at the front end of the knife bar 5, namely the cutting knife strip I and the cutting knife strip II are positioned through a reference surface I and a reference surface III at the same time, or the cutting knife strip I and the cutting knife strip II are positioned through a reference surface II and a reference surface III at the same time, one side of the cutting knife strip I, which is attached to the reference surface I, is provided with a group of 4 pin holes I, the hole interval of the pin holes I is L1, the other side of the cutting knife strip I, which is attached to the reference surface II, is provided with a group of 4 pin holes II, the hole interval of the pin holes II is L2, one side of the cutting knife strip II, which is attached to the reference surface I, is provided with a group of 4 pin holes III, the hole interval of the pin holes III is L1, the other side of the cutting knife strip II, the reference surface, the other side of the reference surface II is provided with a group of 4 pin holes II, the pin holes IV, the pin holes III;
the plane I is provided with an upper group of threaded pin holes and a lower group of threaded pin holes, the upper group of threaded pin holes I correspond to pin holes I on a cutting tool bar I, the lower group of threaded pin holes III correspond to pin holes III on a cutting tool bar II, the cutting tool bar I and the cutting tool bar II are respectively fixed on a reference plane I in a mode of screwing a threaded pin 2 in the threaded pin holes, the plane II is provided with an upper group of threaded pin holes and a lower group of threaded pin holes, the upper group of threaded pin holes II correspond to pin holes II on the cutting tool bar I, the lower group of threaded pin holes IV correspond to pin holes IV on the cutting tool bar II, and the cutting tool bar I and the cutting tool bar II are respectively fixed on the reference plane II in a mode of screwing the threaded pin 2 in the threaded pin holes I and the threaded pin holes II, the central axis distance between the threaded pin holes I and the threaded pin holes II is △ L2, and the central axis distance between the threaded pin holes and the threaded pin holes IV is also △ L2;
as shown in fig. 6, the cutting tips of 2 cutting tool bars 1 and the ball top points of 2 support rods 3 are located on the same circumference.
The cooling liquid channel is forked at a position close to the cutting tool strip 1, and the forked positions respectively point to the cutting tool strip I, the cutting tool strip II and the workpiece.
The cutting tool bar 1 is made of high-speed steel, or a hard alloy blade is welded at the edge part of the cutting tool bar 1.
The pin holes on the cutting tool bars 1 are machined by adopting electric sparks.
The bulb of the support rod 3 is made of YG8 hard alloy, and the bulb is welded at the top end of the support rod 3.
The material of the cutter bar 5 is 40 Cr.
The Moire taper of the cutter bar 5 is No. 5 Moire taper or No. 6 Moire taper.
The height of the plane I and the plane II on the cutter bar 5 is larger than the diameter of a round rod of the cutter bar 5.
The structure of the cutter bar 5 is replaced by a clamping head with a cutter bar mounting groove, a reference surface I, a reference surface II, a reference surface III, a plane I and a plane II at the front end, the middle section is a round rod, and the rear end is a conical rod with Morse taper; the clamping head and the round rod are welded and fixed, and the round rod and the conical rod are integrally manufactured.
In the machining process, according to machining requirements, the positions of the cutting tool strip I and the cutting tool strip II are symmetrically adjusted by changing the positions of threaded pins 2 which sequentially penetrate through threaded pin holes in the cutter bar 5 and pin holes in the cutting tool strip 1, so that the radius of the cutting edge tip of the cutting tool strip 1 is adjusted, and then the cutting diameter of the drill bit is changed.
The present invention is not limited to the above embodiments, and those skilled in the art can make various changes without creative labor from the above conception, and all the changes fall within the protection scope of the present invention.
Claims (9)
1. The clamping device capable of adjusting the cutting diameter of the drill bit is characterized by comprising a cutting tool bar (1), a threaded pin (2), a supporting rod (3), a nut (4) and a tool bar (5); the main body of the cutter bar (5) is a horizontally placed round bar, the front end of the cutter bar (5) is provided with a cutter bar installation groove in the vertical direction, the inner side of the cutter bar installation groove is provided with a vertical reference surface I and a vertical reference surface II which are symmetrically distributed on two sides of the axis of the cutter bar (5), the inner side of the cutter bar installation groove is also provided with a reference surface III which is perpendicular to the axis of the cutter bar (5), the outer side of the cutter bar installation groove is provided with a plane I and a plane II, the plane I is parallel to the reference surface I, and the plane II is parallel to the reference surface II; the rear end of the cutter bar (5) is provided with a Mohs taper assembled with a machine tool; a cooling liquid channel is arranged on the central axis of the cutter bar (5), a conical threaded hole communicated with the cooling liquid channel is further formed in the cutter bar (5), the conical threaded hole is externally connected with a cooling liquid pipeline, and the cooling liquid pipeline is communicated with a cooling system; 2 symmetrically distributed support rods (3) vertical to the axis of the cutter bar (5) are arranged at the position, close to the cutter bar mounting groove, of the front section of the cutter bar (5), the support rods (3) are connected with the cutter bar (5) through threads and then locked through nuts (4), and the heads of the support rods (3) are ball heads;
the cutting tool comprises a cutter bar (5), 2 cutting tool strips (1), a cutter strip I, a cutter strip II, a cutter strip I and a cutter strip II, wherein the cutter strip I and the cutter strip II are arranged above the cutter bar (1) and are vertically and symmetrically arranged in a cutter strip mounting groove at the front end of the cutter bar (5), namely the cutter strip I and the cutter strip II are positioned through a reference surface I and a reference surface III at the same time, or the cutter strip I and the cutter strip II are positioned through the reference surface II and the reference surface III at the same time;
the plane I is provided with an upper group of threaded pin holes and a lower group of threaded pin holes, the upper group of threaded pin holes I correspond to pin holes I on a cutting tool bar I, the lower group of threaded pin holes III correspond to pin holes III on a cutting tool bar II, the cutting tool bar I and the cutting tool bar II are respectively fixed on a reference plane I in a mode of screwing a threaded pin (2) in the threaded pin holes, the plane II is provided with an upper group of threaded pin holes and a lower group of threaded pin holes, the upper group of threaded pin holes II correspond to pin holes II on the cutting tool bar I, the lower group of threaded pin holes IV correspond to pin holes IV on the cutting tool bar II, and the cutting tool bar I and the cutting tool bar II are respectively fixed on the reference plane II in a mode of screwing a threaded pin (2) in the threaded pin holes, the central axis distance between the threaded pin holes I and the threaded pin holes II is △ L2, and the central axis distance between the threaded pin holes I and the threaded pin holes IV is also △ L2;
the cutting blade tips of the 2 cutting tool bars (1) and the ball head top points of the 2 support rods (3) are positioned on the same circumference.
2. The clamping device for adjusting the cutting diameter of a drill bit as claimed in claim 1, wherein the coolant channel is bifurcated near the cutting blade (1) and the bifurcated coolant channel is directed to the cutting blade I, the cutting blade II and the workpiece respectively.
3. The clamping device for adjusting the cutting diameter of the drill bit as claimed in claim 1, wherein the material of the cutting blade bar (1) is high-speed steel, or a hard alloy blade is welded on the edge of the cutting blade bar (1).
4. The clamping device for the cutting diameter of the adjustable drill bit as claimed in claim 1, characterized in that the pin hole on the cutting blade bar (1) is processed by electric discharge machining.
5. The clamping device for adjusting the cutting diameter of the drill bit as claimed in claim 1, wherein the material of the ball head of the supporting rod (3) is YG8 hard alloy, and the ball head is welded at the top end of the supporting rod (3).
6. The clamping device for adjusting the cutting diameter of a drill bit as claimed in claim 1, characterized in that the material of the tool shank (5) is 40 Cr.
7. The clamping device for adjusting the cutting diameter of a drill bit as claimed in claim 1, characterized in that the morse taper of the tool shank (5) is No. 5 morse taper or No. 6 morse taper.
8. The clamping device for adjusting the cutting diameter of a drill bit as claimed in claim 1, characterized in that the height of the planes I and II on the tool shank (5) is greater than the diameter of the round shank of the tool shank (5).
9. The clamping device for adjusting the cutting diameter of the drill bit as claimed in claim 1, wherein the structure of the cutter bar (5) is replaced by a clamping head with a cutter bar mounting groove, a datum plane I, a datum plane II, a datum plane III, a plane I and a plane II at the front end, the middle section is a round rod, and the rear end is a conical rod with Morse taper; the clamping head and the round rod are welded and fixed, and the round rod and the conical rod are integrally manufactured.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921984986.5U CN210848486U (en) | 2019-11-18 | 2019-11-18 | Clamping device capable of adjusting cutting diameter of drill bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921984986.5U CN210848486U (en) | 2019-11-18 | 2019-11-18 | Clamping device capable of adjusting cutting diameter of drill bit |
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| Publication Number | Publication Date |
|---|---|
| CN210848486U true CN210848486U (en) | 2020-06-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921984986.5U Active CN210848486U (en) | 2019-11-18 | 2019-11-18 | Clamping device capable of adjusting cutting diameter of drill bit |
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| CN (1) | CN210848486U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110732707A (en) * | 2019-11-18 | 2020-01-31 | 中国空气动力研究与发展中心高速空气动力研究所 | clamping device capable of adjusting cutting diameter of drill bit |
-
2019
- 2019-11-18 CN CN201921984986.5U patent/CN210848486U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110732707A (en) * | 2019-11-18 | 2020-01-31 | 中国空气动力研究与发展中心高速空气动力研究所 | clamping device capable of adjusting cutting diameter of drill bit |
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