CN210548352U - Tooth lock type milling cutter - Google Patents
Tooth lock type milling cutter Download PDFInfo
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- CN210548352U CN210548352U CN201921210891.8U CN201921210891U CN210548352U CN 210548352 U CN210548352 U CN 210548352U CN 201921210891 U CN201921210891 U CN 201921210891U CN 210548352 U CN210548352 U CN 210548352U
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- milling cutter
- thread
- type milling
- cutter
- lock
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Abstract
A tooth lock type milling cutter comprises a body and a vibration suppressing ring. The body comprises a cutter head, an end part and a screw thread part, wherein the cutter head and the end part are respectively formed at two opposite ends of the body, the screw thread part is formed between the cutter head and the end part, and the vibration damping ring is covered on the periphery of the end part and is adjacent to the screw thread part. The vibration damping ring forms support and buffer between the end of the body and the components such as the cutter bar and the like, eliminates the gap between the body and the components such as the cutter bar and the like, and improves the locking stability between the body of the milling cutter and the components such as the cutter bar and the like so as to improve the machining precision of the tooth lock type milling cutter during cutting.
Description
Technical Field
The present invention relates to a cutting tool for a machining machine, and more particularly to a tooth lock type milling cutter.
Background
Referring to fig. 7, the conventional tooth lock type milling cutter 90 mainly includes a cutter head 91 and a screw thread 92 provided at opposite ends of the milling cutter 90, and the screw thread 92 is locked to a tooth lock type cutter bar, a collet, or an extension bar, etc., so that the specification of the milling cutter 90 provided on the cutter bar, etc. can be conveniently replaced by using the tooth lock type design, and the milling cutter 90 can be replaced after being worn.
However, the conventional tooth lock type milling cutter 90 and a cutter bar and other members are locked by only utilizing the engagement of the screw teeth 92, so that the stability during locking is easily influenced by the engagement clearance of the screw teeth 92, and further, the problems of vibration, eccentric connection and the like are easily generated, and the cutting precision of the milling cutter 90 is influenced; further, when the lock-type milling cutter 90 receives a reaction force generated by cutting, since the root 922 of the conventional screw thread 92 is generally flat, stress concentration tends to concentrate at a corner between the root 922 of the screw thread 92 and the side wall 923, and the screw thread 92 tends to be broken.
SUMMERY OF THE UTILITY MODEL
Stability when considering current tooth locking-type milling cutter lock solid receives the influence in the gear backlash of screw tooth easily, the utility model discloses a main aim at provides a tooth locking-type milling cutter, and it can improve the stability when tooth locking-type milling cutter lock solid, and then the machining precision when promoting milling cutter cutting.
In order to achieve the above object, the present invention provides a tooth lock type milling cutter, comprising:
a body including
A cutter head formed at one end of the body;
the end part is formed on the body and is positioned at one end far away from the cutter head; and
a screw thread part formed on the body and located between the cutter head and the end part; and
and the vibration damping ring is coated on the periphery of the end part of the body, and the diameter of an end view circumscribed circle of the vibration damping ring is smaller than the outer diameter of the screw tooth part.
The tooth lock type milling cutter as described above, wherein the thread portion of the body is provided with a trapezoidal thread, and the root of the trapezoidal thread is arc-shaped.
The tooth lock type milling cutter as described above, wherein a tapered extension portion is provided between the cutter head and the thread portion of the body, and the diameter of the tapered extension portion gradually increases from the thread portion toward the cutter head.
The screw lock-type milling cutter as described above, wherein the dampening ring abuts the screw thread portion.
The tooth lock type milling cutter as described above, wherein a groove is radially recessed at an end of the body, and a protruding rib is formed at a position of the vibration suppressing ring corresponding to the groove, and the protruding rib is embedded in the groove.
In the above-described tooth lock type milling cutter, preferably, the groove at the end of the body is adjacent to the thread part.
By foretell technical characteristic, the utility model discloses a tooth locking-type milling cutter lock is fixed in the cutter arbor, the collet chuck, during the extension rod, utilize the system to shake annular support and the buffering between components such as the body of forming milling cutter and cutter arbor, eliminate the clearance of components such as body and cutter arbor, and promote the lock stability between components such as the body of milling cutter and cutter arbor, machining precision when promoting tooth locking-type milling cutter to cut, and the thread portion of body further sets up to trapezoidal thread, and the root of tooth of this trapezoidal thread is convex, and can avoid stress concentration in the corner that the root of tooth formed with the lateral wall, and the arc surface dispersion stress at the usable root of tooth, promote the rigidity intensity of trapezoidal thread, and make the thread more difficult the collapsing.
Drawings
Fig. 1 is a perspective view of the preferred embodiment of the present invention.
Fig. 2 is a partially sectioned exploded perspective view of a preferred embodiment of the present invention.
Fig. 3 is a side view of the preferred embodiment of the present invention.
Fig. 4 is a side view, partially in section, of a preferred embodiment of the invention.
Fig. 5 is a side view, partially in section, of the preferred embodiment of the present invention installed on an extension pole.
Fig. 6 is a partial sectional side view of the preferred embodiment of the present invention mounted on the tool bar.
Fig. 7 is a side view of a prior art tooth lock type milling cutter.
Detailed Description
The following description of the preferred embodiments of the present invention will be made in conjunction with the drawings and the accompanying drawings to further illustrate the technical means adopted to achieve the objects of the present invention.
Referring to fig. 1 to 4, the tooth lock type milling cutter of the present invention includes a body 10 and a vibration suppressing ring 20. The body 10 includes a cutting head 11, an end portion 15, and a thread portion 13. The cutting head 11 and the end portion 15 are respectively located at two opposite ends of the body 10, the thread portion 13 is formed between the cutting head 11 and the end portion 15, a stop surface 111 is formed at one side of the cutting head 11 facing the end portion 15, the end portion 15 is cylindrical and has the same axis as the thread portion 13, the outer diameter of the end portion 15 is smaller than that of the thread portion 13, the end portion 15 can also be polygonal column-shaped, and the outer diameter of a circumscribed circle viewed from an end is smaller than that of the thread portion 13; the screw thread part 13 is annularly provided with screw threads, the screw threads can be trapezoidal screw threads with better locking force, preferably, the thread root 132 of the trapezoidal screw threads is arc-shaped instead of plane, so that stress concentration at a corner formed by the thread root 132 and the side wall can be avoided, stress can be dispersed by using the arc surface of the thread root 135, the rigidity strength of the trapezoidal screw threads is improved, and the screw threads are less prone to collapse.
Preferably, an extension portion 12 is disposed between the screw portion 13 and the tool bit 11, the extension portion 12 and the screw portion 13 are coaxial, and the extension portion 12 is tapered, and the diameter of the extension portion gradually increases from the screw portion 13 to the tool bit 11 and is adjacent to the stop surface 111 of the tool bit 11, so that a conical surface with the same taper and size is disposed between the body 10 and a tool bar or the like, thereby eliminating a gap between the body 10 and the tool bar or the like, and when the screw portion 13 is locked, the axial center between the body 10 and the tool bar or the like can be automatically aligned, thereby avoiding an eccentric problem caused by the screw gap during locking.
The vibration-damping ring 20 is annular, covers the periphery of the end portion 15, and is adjacent to the thread portion 13, and the outer diameter of the vibration-damping ring 20 is smaller than the outer diameter of the screw thread portion 13, the vibration-damping ring 20 can also be polygonal column-shaped, the diameter of the circumcircle is smaller than the diameter of the screw thread part 13, the vibration-damping ring 20 forms the support and buffer between the body 10 and the components such as the cutter bar, eliminates the clearance between the body 10 and the components such as the cutter bar, and simultaneously restrains the vibration, thereby improving the locking stability between the body 10 and the cutter bar and other members to improve the processing precision of the cutter head 11 during cutting, the material of the vibration-damping ring 20 can be polytetrafluoroethylene, and the sealing property, the low friction coefficient and the high lubrication non-stickiness of the polytetrafluoroethylene are utilized to provide good support between the body 10 and the components such as the cutter bar, the damping ring 20 may also be made of other materials with good sealing, wear-resistant, and damping properties.
Preferably, a groove 152 is radially recessed in the end portion 15 of the body 10, and the vibration suppressing ring 20 forms an annular protruding rib 22 at a position corresponding to the groove 152 to be embedded in the groove 152, so as to prevent the vibration suppressing ring 20 from falling off, wherein the groove 152 can be disposed at a position adjacent to the thread portion 13, and the vibration suppressing ring 20 can be coated on the end portion 15 by means of coating molding.
Referring to fig. 5 and 6, when the tooth lock type milling cutter of the present invention is installed on the cutter bar 60 or the extension rod 50, the outer thread of the thread portion 13 is engaged with the inner threads of the cutter bar 60 and the extension rod 50, and the abutting surface 111 is attached to the end surfaces of the cutter bar 60 and the extension rod 50, the extension portion 12 and the cutter bar 60 or the extension rod 50 form a conical surface attachment, so as to eliminate the gap and improve the precision, and the vibration damping ring 20 forms the support of the end portion 15 of the body 10 and the extension rods of the cutter bar 60 and 50, thereby improving the stability of the locking.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and although the present invention has been disclosed with reference to the above preferred embodiment, but not to limit the present invention, any person skilled in the art can make modifications or changes to equivalent embodiments without departing from the scope of the present invention, and any simple modification, equivalent change and modification made to the above embodiments by the technical spirit of the present invention still fall within the scope of the present invention.
Claims (6)
1. A tooth lock type milling cutter is characterized by comprising
A body including
A cutter head formed at one end of the body;
the end part is formed on the body and is positioned at one end far away from the cutter head; and
a screw thread part formed on the body and located between the cutter head and the end part; and
and the vibration damping ring is coated on the periphery of the end part of the body, and the diameter of an end view circumscribed circle of the vibration damping ring is smaller than the outer diameter of the screw tooth part.
2. The lock-type milling cutter according to claim 1, wherein the thread portion of the body is provided with a trapezoidal thread, and a root of the trapezoidal thread is rounded.
3. The lock-type milling cutter according to claim 1 or 2, wherein an extension portion is provided between the bit and the thread portion of the body, the extension portion is tapered, and a diameter of the extension portion is gradually increased from the thread portion toward the bit.
4. The lock milling cutter according to claim 3, wherein the dampening ring abuts the thread portion.
5. The tooth lock-type milling cutter according to claim 4, wherein the end of the body is radially recessed with a groove, and the vibration suppressing ring is formed with a rib at a position corresponding to the groove, and the rib is embedded in the groove.
6. The lock milling cutter according to claim 5, wherein the end of the body has a groove adjacent the thread portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921210891.8U CN210548352U (en) | 2019-07-30 | 2019-07-30 | Tooth lock type milling cutter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921210891.8U CN210548352U (en) | 2019-07-30 | 2019-07-30 | Tooth lock type milling cutter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210548352U true CN210548352U (en) | 2020-05-19 |
Family
ID=70666887
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921210891.8U Active CN210548352U (en) | 2019-07-30 | 2019-07-30 | Tooth lock type milling cutter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210548352U (en) |
-
2019
- 2019-07-30 CN CN201921210891.8U patent/CN210548352U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |