CN210937501U - High-efficient gear milling cutter - Google Patents
High-efficient gear milling cutter Download PDFInfo
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- CN210937501U CN210937501U CN201921464873.2U CN201921464873U CN210937501U CN 210937501 U CN210937501 U CN 210937501U CN 201921464873 U CN201921464873 U CN 201921464873U CN 210937501 U CN210937501 U CN 210937501U
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Abstract
The utility model discloses a high-efficiency gear milling cutter, which comprises a cutter handle; the cutter head is integrally and coaxially fixed with one side shaft end of the cutter handle; the cutting edge groups are arranged in the opposite direction of the rotation of the tool bit, and each cutting edge group comprises a first edge surface, a second edge surface, a third edge surface and a fourth edge surface which are sequentially connected; the chip accommodating pit is sunken on the surface of the cutter head and is connected with the fourth cutting edge surface; the cutter head is respectively provided with two cutting edge groups and two chip containing pits, the cutting edge groups and the chip containing pits are respectively in centrosymmetric figures along the axial visual angle projection of the cutter head, and the edges of the profiles of the first cutting edge surfaces and the chip containing pits are axially symmetric along the self axis of the cutter head along the visual angle vertical to the axis of the cutter head. Adopt this utility model discloses can once process just process out the clearance between the adjacent tooth, the facet that a plurality of links to each other changes in transition in proper order, and the amount of eating of every facet is low, can coincide on the head and the tail movement track of tool bit, stability when having guaranteed the cutter function.
Description
Technical Field
The utility model relates to a sword field for the lathe, concretely relates to high-efficient gear milling cutter.
Background
The prior art can not achieve high-efficiency gear machining. High speed, high efficiency mill and guarantee the precision of product and cutter life-span. High strength, high precision gear cutters, and slow feed machining are also required. And when the gear is milled, serious cutter vibration is easily generated, the processing period is long, the qualified rate of finished products is not high, and processed parts are easy to scrap. Low production efficiency and poor quality. Therefore, there is a need to develop a gear milling cutter with high precision, high speed, high efficiency and high rigidity
SUMMERY OF THE UTILITY MODEL
The to-be-solved problem of the utility model is to provide a high-efficient gear milling cutter can once only process the clearance between the adjacent tooth, and the facet that a plurality of links to each other changes in transition in proper order, and the bite of every facet is low, can coincide on the head and the tail movement track of tool bit, stability when having guaranteed the cutter function.
In order to solve the above problem, the utility model provides a high-efficient gear milling cutter, for reaching above-mentioned purpose, the utility model provides a technical scheme that its technical problem adopted is:
a high efficiency gear milling cutter comprising: a knife handle; the cutter head is integrally and coaxially fixed with one side shaft end of the cutter handle; the cutting edge groups are arranged in the opposite direction of the rotation of the tool bit, and each cutting edge group comprises a first edge surface, a second edge surface, a third edge surface and a fourth edge surface which are sequentially connected; the chip accommodating pit is sunken on the surface of the cutter head and is connected with the fourth cutting edge surface; the cutter head is respectively provided with two cutting edge groups and two chip containing pits, the cutting edge groups and the chip containing pits are respectively in centrosymmetric figures along the axial visual angle projection of the cutter head, and the edges of the profiles of the first cutting edge surfaces and the chip containing pits are axially symmetric along the self axis of the cutter head along the visual angle vertical to the axis of the cutter head.
The beneficial effect of adopting above-mentioned technical scheme is: the gear blank can be processed, the gap between adjacent teeth can be processed by one-time processing, and the gear blank has high strength and hardness, so that the gear blank is processed by one-time processing, and the cutting consumption is not small. The processing of the groove can be realized by one-time feeding and retracting procedure of the milling cutter, and the high precision, the high speed and the high efficiency can be achieved in the gear processing process. Because cutting edge group sword is first flank, second flank, third flank, fourth flank transition change in proper order, mean that a tool bit rotates at every turn and all has four gradual change sword to carry out the cutting action, cutting efficiency is high, the amount of eating of every flank reduces, the machining volume requirement to every flank has been reduced, the precision and the cutter life-span problem of product have just also been solved and high efficiency is milled and are guaranteed, the shake sword that very easily produces when having avoided milling the gear. The chip accommodating pit can ensure that the processed chips are accommodated in the chip accommodating pit at the first time and wait for subsequent discharge. A cutting edge group and a chip containing pit are the most basic cutting unit, the head and tail outlines of the cutting unit are axisymmetric when rotating along the circumferential direction, and the motion tracks can be overlapped, so that the stability of the cutter during operation is ensured, the eccentric force and the torsional force of a processed workpiece to the cutter are prevented, and the machined groove is also axisymmetric.
As a further improvement, along the axial visual angle projection of tool bit, the profile expansion angle that a cutting edge group and adjacent one hold the bits hole and occupy is the straight angle, hold the bits hole and include that two are the crossing first appearance bits plane of angle, the second holds the bits plane, first appearance bits plane links to each other with the fourth cutting edge, two hold the respective second in bits hole and hold the self axis that the bits plane is parallel to each other and is on a parallel with the tool bit, hold the planar visual angle projection of bits along the perpendicular to second, first cutting edge, hold the border of the respective profile in bits hole and be axisymmetric along tool bit self axis.
The beneficial effect of adopting above-mentioned technical scheme is: the cutter head rotates a week and experiences twice cutting unit promptly, and first appearance bits plane, second appearance bits plane constitute the chip groove space big to the piece after the processing is convenient for block to the planar angle of second appearance bits, guarantees the piece and discharges, and not let the piece be detained and when next rotating machining, avoid influencing the machining precision.
As a further improvement of the utility model, the first cutting face, the second cutting face, the third cutting face, the fourth cutting face and the chip containing pit are gradually lengthened along the axial length of the cutter head.
The beneficial effect of adopting above-mentioned technical scheme is: the cutting edge face which is contacted with the machined workpiece first is shorter, so that the cutting depth is not too much, the cutting depth can be distributed evenly from front to back conveniently, the initial cutting depth is large, the subsequent cutting depth is small, and the gradually-lengthened arrangement is convenient for guiding the scraps to be discharged in the direction away from the cutter head.
As a further improvement of the utility model, the respective first blade surfaces of the two cutting blade groups are connected.
The beneficial effect of adopting above-mentioned technical scheme is: the foremost top of the cutter head is guaranteed to be provided with a blade part.
As a further improvement of the utility model, the first blade face and the second blade face are connected with the scrap accommodating pit, and the second blade face is connected with the fourth blade face.
The beneficial effect of adopting above-mentioned technical scheme is: the chips processed at the end parts of the first blade surface and the second blade surface can enter the chip accommodating pit in the first time. The second blade face is connected with the fourth blade face, so that the third blade face is not connected with the scrap accommodating pit, the density of a boundary line of the top end of the tool bit is reduced, and the processing difficulty is reduced.
As a further improvement of the present invention, the fourth blade surface is a plane, and the first blade surface, the second blade surface and the third blade surface are curved surfaces having a convex arc surface and a concave arc surface respectively.
The beneficial effect of adopting above-mentioned technical scheme is: the inner wall of the processed groove is also provided with a convex cambered surface and a concave cambered surface. The fourth cutting surface is used as the last cutting surface, and the main cutting function is the boundary line of the fourth cutting surface and the third cutting surface, so that the difficulty in processing the cutter is reduced as the fourth cutting surface is a plane.
As a further improvement of the utility model, the circumference of the cutter head is provided with a circumferential tooth, and the circumferential tooth comprises a first circumferential tooth surface and a second circumferential tooth surface which are sequentially connected and form an angle with each other along the opposite direction of the rotation of the cutter head.
The beneficial effect of adopting above-mentioned technical scheme is: the peripheral teeth can cut the side vertical surface in the groove, and the size precision of the machined gear is ensured at the topmost end of the machined gear.
As a further improvement of the utility model, the first peripheral tooth surface is connected with the first edge surface, and the second peripheral tooth surface is connected with the first edge surface, the second edge surface and the third edge surface.
The beneficial effect of adopting above-mentioned technical scheme is: the second peripheral tooth surface is larger in area than the first peripheral tooth surface.
As the utility model discloses a further improvement again, first peripheral flank of tooth, second peripheral flank of tooth are the plane, along the axial visual angle projection of tool bit, and second peripheral flank of tooth and tool bit root periphery enclose into the segmental face.
The beneficial effect of adopting above-mentioned technical scheme is: the cambered surface equivalently avoids a chip removal space.
As a further improvement of the present invention, the relief angle corresponding to the first, second and third cutting surfaces is respectively 8 °, 15 ° and 26 °.
The beneficial effect of adopting above-mentioned technical scheme is: the selection of the angle determines that the cutting effect of the first blade surface, the second blade surface and the third blade surface is gradual, and the selection of the angle can obtain better cutting and chip removal effects.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a front view of an embodiment of the present invention.
Fig. 2 is an axial view of a cutter head according to an embodiment of the present invention.
Fig. 3 is a partial enlarged view of a portion a according to an embodiment of the present invention.
Fig. 4 is a schematic application diagram of an embodiment of the present invention.
Fig. 5 is a partial enlarged view of a portion B according to an embodiment of the present invention.
1-a knife handle; 2-a cutter head; 3-a first facet; 4-a second facet; 5-a third facet; 6-first peripheral tooth surface; 7-second peripheral tooth surface; 8-a fourth facet; 9-chip accommodating pit; 9 a-a first chip-holding plane; 9 b-a second chip-holding plane; 10-a workpiece; 11-a groove; 12-an arcuate surface; l1-overall cutter length; l2-total blade length; l3-overall sipe length; d1-diameter of cutting head; d2-diameter of the tool shank; a 1-backlash angle; a 2-hook angle; a 3-peripheral teeth first relief angle; a 4-peripheral tooth secondary relief angle; h1-end tooth eccentricity distance; h2-circumferential teeth first back angle width; h3-total wide tooth clearance angle.
Detailed Description
The following detailed description is made in conjunction with specific embodiments of the present invention:
in order to achieve the purpose of the utility model, a high-efficient gear milling cutter, include: a knife handle 1; the cutter head 2 is integrally and coaxially fixed with one side shaft end of the cutter handle 1; the cutting edge groups are arranged along the opposite direction of the rotation of the tool bit 2, and each cutting edge group comprises a first edge surface 3, a second edge surface 4, a third edge surface 5 and a fourth edge surface 8 which are connected in sequence; the chip containing pit 9 is sunken on the surface of the tool bit 2 and is connected with the fourth edge surface 8; the tool bit 2 is respectively provided with two cutting edge groups and two chip containing pits 9, the profiles of the cutting edge groups and the chip containing pits 9 are centrosymmetric in projection along the axial visual angle of the tool bit 2, and the edges of the profiles of the first cutting edge surfaces 3 and the chip containing pits 9 are axisymmetric along the self axis of the tool bit 2 along the visual angle vertical to the axis of the tool bit 2.
As shown in fig. 4, the cutting head 2 machines a workpiece 10 to form symmetrical grooves 11, i.e., a gear blank, and grooves 11 between adjacent teeth. The tool holder 1 and the tool bit 2 are made of tungsten-titanium-cobalt alloy.
The beneficial effect of adopting above-mentioned technical scheme is: the gear blank can be processed, the gap between adjacent teeth can be processed by one-time processing, and the gear blank has high strength and hardness, so that the gear blank is processed by one-time processing, and the cutting consumption is not small. The processing of the groove can be realized by one-time feeding and retracting procedure of the milling cutter, and the high precision, the high speed and the high efficiency can be achieved in the gear processing process. Because cutting edge group sword is first flank, second flank, third flank, fourth flank transition change in proper order, mean that a tool bit rotates at every turn and all has four gradual change sword to carry out the cutting action, cutting efficiency is high, the amount of eating of every flank reduces, the machining volume requirement to every flank has been reduced, the precision and the cutter life-span problem of product have just also been solved and high efficiency is milled and are guaranteed, the shake sword that very easily produces when having avoided milling the gear. The chip accommodating pit can ensure that the processed chips are accommodated in the chip accommodating pit at the first time and wait for subsequent discharge. A cutting edge group and a chip containing pit are the most basic cutting unit, the head and tail outlines of the cutting unit are axisymmetric when rotating along the circumferential direction, and the motion tracks can be overlapped, so that the stability of the cutter during operation is ensured, the eccentric force and the torsional force of a processed workpiece to the cutter are prevented, and the machined groove is also axisymmetric.
In other embodiments of the present invention, along the axial visual angle projection of the tool bit 2, the profile expansion angle occupied by one cutting edge set and its adjacent chip accommodating pit 9 includes two first chip accommodating planes 9a and second chip accommodating planes 9b intersecting at an angle for the flat angle chip accommodating pit 9, the first chip accommodating planes 9a are connected to the fourth edge surface 8, the two respective second chip accommodating planes 9b of the chip accommodating pit 9 are parallel to each other and to the self axis of the tool bit 2, the visual angle projection of the second chip accommodating planes 9b along the perpendicular to, the edges of the respective profiles of the first edge surface 3 and the chip accommodating pit 9 are axisymmetric along the self axis of the tool bit 2.
The beneficial effect of adopting above-mentioned technical scheme is: the cutter head rotates a week and experiences twice cutting unit promptly, and first appearance bits plane, second appearance bits plane constitute the chip groove space big to the piece after the processing is convenient for block to the planar angle of second appearance bits, guarantees the piece and discharges, and not let the piece be detained and when next rotating machining, avoid influencing the machining precision.
In other embodiments of the present invention, the first blade surface 3, the second blade surface 4, the third blade surface 5, the fourth blade surface 8, and the chip accommodating pit 9 are gradually elongated along the axial length of the tool bit 2.
The beneficial effect of adopting above-mentioned technical scheme is: the cutting edge face which is contacted with the machined workpiece first is shorter, so that the cutting depth is not too much, the cutting depth can be distributed evenly from front to back conveniently, the initial cutting depth is large, the subsequent cutting depth is small, and the gradually-lengthened arrangement is convenient for guiding the scraps to be discharged in the direction away from the cutter head.
In other embodiments of the present invention, the respective first facets 3 of two sets of cutting edges are connected.
The beneficial effect of adopting above-mentioned technical scheme is: the foremost top of the cutter head is guaranteed to be provided with a blade part.
In other embodiments of the present invention, the first blade surface 3 and the second blade surface 4 are connected to the chip-containing pit 9, and the second blade surface 4 is connected to the fourth blade surface 8.
The beneficial effect of adopting above-mentioned technical scheme is: the chips processed at the end parts of the first blade surface and the second blade surface can enter the chip accommodating pit in the first time. The second blade face is connected with the fourth blade face, so that the third blade face is not connected with the scrap accommodating pit, the density of a boundary line of the top end of the tool bit is reduced, and the processing difficulty is reduced.
In other embodiments of the present invention, the fourth blade surface 8 is a flat surface, and the first blade surface 3, the second blade surface 4, and the third blade surface 5 are curved surfaces having a convex arc surface and a concave arc surface, respectively.
The beneficial effect of adopting above-mentioned technical scheme is: the inner wall of the processed groove is also provided with a convex cambered surface and a concave cambered surface. The fourth cutting surface is used as the last cutting surface, and the main cutting function is the boundary line of the fourth cutting surface and the third cutting surface, so that the difficulty in processing the cutter is reduced as the fourth cutting surface is a plane.
In other embodiments of the present invention, the circumferential surface of the cutter head 2 has circumferential teeth, and the circumferential teeth include a first circumferential tooth surface 6 and a second circumferential tooth surface 7 which are sequentially connected and form an angle with each other in the opposite direction of the rotation of the cutter head 2.
The beneficial effect of adopting above-mentioned technical scheme is: the peripheral teeth can cut the side vertical surface in the groove, and the size precision of the machined gear is ensured at the topmost end of the machined gear.
In other embodiments of the present invention, the first peripheral surface 6 is connected to the first edge surface 3, and the second peripheral surface 7 is connected to the first edge surface 3, the second edge surface 4, and the third edge surface 5.
The beneficial effect of adopting above-mentioned technical scheme is: the second peripheral tooth surface is larger in area than the first peripheral tooth surface.
In other embodiments of the present invention, the first peripheral tooth surface 6 and the second peripheral tooth surface 7 are both flat surfaces, and the second peripheral tooth surface 7 and the root peripheral surface of the tool bit 2 form an arcuate surface 12 in the axial view projection of the tool bit 2.
As shown in fig. 1, the total blade length L1 formed by the tool bit 2 and the tool holder 1 can be determined in practice, the axial length of the arcuate surface 12 and the tool bit tip is the total blade length L2, the axial longest distance of the chip accommodating pit 9 is the total blade length L3, and both the total blade length L2 and the total blade length L3 can be determined in practice. The cutting head diameter D1 and the shank diameter D2 are also determined in practice. The clearance angle a1 is 18 °. As shown in fig. 3, the front angle a2 is 5 °, the circumferential tooth first relief angle A3 is 6 ° to 8 °, and the circumferential tooth second relief angle a4 is 20 ° to 28 °. As shown in fig. 2, the end tooth eccentricity H1 is related to the bit diameter D1, and the end tooth eccentricity H1 is 0.04mm when the bit diameter D1 is 7 mm. The peripheral tooth first relief angle width H2 has a value equal to 0.5% to 0.6% of the cutting head diameter D1 and the peripheral tooth total relief angle width H3 has a value equal to 15% to 20% of the cutting head diameter D1.
The beneficial effect of adopting above-mentioned technical scheme is: the cambered surface equivalently avoids a chip removal space.
In other embodiments of the present invention, the relief angles corresponding to the first blade surface 3, the second blade surface 4, and the third blade surface 5 are 8 °, 15 °, and 26 °, respectively.
The beneficial effect of adopting above-mentioned technical scheme is: the selection of the angle determines that the cutting effect of the first blade surface, the second blade surface and the third blade surface is gradual, and the selection of the angle can obtain better cutting and chip removal effects.
The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and the protection scope of the present invention can not be limited thereby, and all equivalent changes or modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.
Claims (10)
1. A high efficiency gear milling cutter, comprising:
a knife handle;
the cutter head is integrally and coaxially fixed with one side shaft end of the cutter handle;
the cutting edge groups are arranged in the opposite direction of the rotation of the tool bit, and each cutting edge group comprises a first edge surface, a second edge surface, a third edge surface and a fourth edge surface which are sequentially connected;
the chip accommodating pit is sunken on the surface of the cutter head and is connected with the fourth cutting edge surface;
the cutter head is provided with two cutting edge groups and two chip containing pits respectively, the cutting edge groups and the chip containing pits are projected along the axial visual angle of the cutter head, the profiles of the cutting edge groups and the chip containing pits are centrosymmetric, and the edges of the profiles of the first edge surfaces and the chip containing pits are axisymmetric along the self axis of the cutter head along the visual angle vertical to the axis of the cutter head.
2. A high efficiency gear milling cutter as defined in claim 1, wherein: the projection of an axial view angle of the tool bit is followed, a cutting edge group and a profile expansion angle occupied by a chip containing pit adjacent to the cutting edge group are flat angles, the chip containing pit comprises a first chip containing plane and a second chip containing plane which are intersected at an angle, the first chip containing plane is connected with a fourth cutting edge plane, the second chip containing planes of the two chip containing pits are parallel to each other and are parallel to the axis of the tool bit, the projection of the view angle perpendicular to the second chip containing plane is followed, and the edges of the profiles of the first cutting edge plane and the chip containing pit are axisymmetric along the axis of the tool bit.
3. A high efficiency gear milling cutter as defined in claim 2, wherein: the first cutting face, the second cutting face, the third cutting face, the fourth cutting face and the chip containing pit are gradually lengthened along the axial length of the cutter head.
4. A high efficiency gear milling cutter as defined in claim 2, wherein: the first edge surfaces of the two cutting edge groups are connected.
5. The high efficiency gear milling cutter according to claim 4, wherein: the first cutting surface and the second cutting surface are connected with the chip containing pit, and the second cutting surface is connected with the fourth cutting surface.
6. The high efficiency gear milling cutter according to claim 5, wherein: the fourth cutting surface is a plane, and the first cutting surface, the second cutting surface and the third cutting surface are curved surfaces with convex arc surfaces and concave arc surfaces respectively.
7. A high efficiency gear milling cutter as defined in claim 2, wherein: the circumferential surface of the cutter head is provided with circumferential teeth, and the circumferential teeth comprise a first circumferential tooth surface and a second circumferential tooth surface which are sequentially connected and form an angle with each other along the opposite direction of the rotation of the cutter head.
8. The high efficiency gear milling cutter according to claim 7, wherein: the first peripheral tooth surface is connected with the first edge surface, and the second peripheral tooth surface is connected with the first edge surface, the second edge surface and the third edge surface.
9. The high efficiency gear milling cutter according to claim 8, wherein: the first peripheral tooth surface and the second peripheral tooth surface are both planes, and form an arc surface with the circumferential surface of the root of the tool bit along the axial view projection of the tool bit.
10. A high efficiency gear milling cutter as defined in claim 1, wherein: the corresponding back angle angles of the first blade surface, the second blade surface and the third blade surface are respectively 8 degrees, 15 degrees and 26 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921464873.2U CN210937501U (en) | 2019-09-04 | 2019-09-04 | High-efficient gear milling cutter |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921464873.2U CN210937501U (en) | 2019-09-04 | 2019-09-04 | High-efficient gear milling cutter |
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| CN210937501U true CN210937501U (en) | 2020-07-07 |
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| CN201921464873.2U Active CN210937501U (en) | 2019-09-04 | 2019-09-04 | High-efficient gear milling cutter |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110449668A (en) * | 2019-09-04 | 2019-11-15 | 江苏科比特切削科技有限公司 | A kind of high-efficient gear milling cutter |
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2019
- 2019-09-04 CN CN201921464873.2U patent/CN210937501U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110449668A (en) * | 2019-09-04 | 2019-11-15 | 江苏科比特切削科技有限公司 | A kind of high-efficient gear milling cutter |
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