CN208613827U - High-intensitive long drill bit - Google Patents

Abstract

The utility model relates to drilling device technical fields, provide a kind of high-intensitive long drill bit, comprising: knife handle, interconnecting piece and processing department, wherein one end of knife handle and one end of interconnecting piece connect, and the other end of interconnecting piece and one end of processing department connect；One end of the processing department is connect with one end of the knife handle, the side of the processing department is provided at least two chip pockets, land is formed between two adjacent chip pockets, the chip pocket and the land are in the shape of a spiral, chip pocket is extended spirally from the other end face of the processing department to the other end of the interconnecting piece, and its edge is gradually reduced perpendicular to the cross-sectional area on each section of rotation axis.Based on the above structure as chip pocket is gradually reduced along the cross-sectional area in each section perpendicular to rotation axis, processing department in the same direction on the cross-sectional area in each section become larger, may make processing department that there is higher intensity, to prevent breaking phenomenon.

Description

High-intensitive long drill bit

Technical field

The utility model relates to drilling device technical field more particularly to a kind of high-intensitive long drill bits.

Background technique

It is well known that drill bit is a kind of bore cutter.Drill bit has at least one main cutting edge, and the main cutting edge is from drill bit Peripheral surface substantially towards drill bit center position extend.Cutting zone is formed in the central area of drill bit, due to this The angle of wedge (Keilwinkel) in cutting zone is significantly greater than the angle of wedge in radially outer cutting zone, therefore more precisely Say that the cutting zone is scraping and compressing rather than is cut.

During realizing the application, the inventor finds that the existing technology has at least the following problems: existing drill bit because It needs to process deeper hole on workpiece, so that the processing department of drill bit is extremely elongated, lifts easily occurs even so as to cause drill bit There is breaking phenomenon.

Summary of the invention

In order to solve the above-mentioned technical problem, the utility model embodiment provides a kind of lifts and breaking of capable of effectively avoiding High-intensitive long drill bit.

The utility model provides a kind of high-intensitive long drill bit, has rotation axis, comprising:

Knife handle；

Interconnecting piece, one end are connect with one end of the knife handle；

Processing department, one end are connect with the other end of the interconnecting piece, and the side of the processing department is provided at least two appearances It considers slot to be worth doing, forms land between two adjacent chip pockets, in the shape of a spiral, the chip pocket is by processing for the chip pocket and land The other end face in portion is extended spirally to the other end of the interconnecting piece, and the chip pocket is along perpendicular to the rotation axis Cross-sectional area on each section is gradually reduced.

In some embodiments, the other end of the processing department is provided with the first notch, and first notch is set to institute State the joint on land far from interconnecting piece one end end face and the land medial surface.

In some embodiments, first notch and the chip pocket are interconnected, first notch and the appearance The connectivity part of bits slot is provided with the second notch.

In some embodiments, there are two the chip pocket is total to, and two chip pockets and two lands are surrounded on institute Rotation axis is stated, and is arranged alternately.

In some embodiments, two chip pockets are centrosymmetric relative to the rotation axis.

In some embodiments, separate described interconnecting piece one end on the inclined-plane and the land of first notch is formed The joint of end face forms the first cutting edge.

In some embodiments, first cutting edge is linear, first cutting edge altogether there are two, two first Cutting edge is parallel to each other, and two the first cutting edges partly overlap.

In some embodiments, the land lateral surface setting it is fluted, the groove in the shape of a spiral, the groove A side forms the second cutting edge.

In some embodiments, the groove is located at the lateral surface of one end on the land far from interconnecting piece, described recessed The other side of slot is connected to the chip pocket.

In some embodiments, there are two the groove is total to, and two grooves are surrounded on the rotation axis, and And two grooves are centrosymmetric relative to the rotation axis.

The beneficial effects of the utility model are: compared with prior art, the utility model provides a kind of high-intensitive jumping chisel Head, the long drill bit include knife handle, interconnecting piece and processing department, wherein one end of the processing department and one end of the knife handle connect It connects, the side of the processing department is provided at least two chip pockets, and land, the appearance bits are formed between two adjacent chip pockets In the shape of a spiral, chip pocket is extended spirally from the other end face of the processing department to the other end of the interconnecting piece for slot and land, And its edge is gradually reduced perpendicular to the cross-sectional area on each section of rotation axis.Based on the above structure, with chip pocket edge Be gradually reduced perpendicular to the cross-sectional area in each section of rotation axis, processing department in the same direction on each section it is transversal Area becomes larger, and may make processing department to have higher intensity, to prevent breaking phenomenon.

Detailed description of the invention

One or more embodiments are illustrated by the picture in corresponding attached drawing, these exemplary theorys The bright restriction not constituted to embodiment, the element in attached drawing with same reference numbers label are expressed as similar element, remove Non- to have special statement, composition does not limit the figure in attached drawing.

Fig. 1 is the structural schematic diagram of long drill bit in the utility model embodiment.

Fig. 2 is the structural schematic diagram of processing department in long drill bit in Fig. 1.

Fig. 3 is another structural schematic diagram of processing department in long drill bit in Fig. 1.

Specific embodiment

For the ease of understanding the utility model, with reference to the accompanying drawings and detailed description, the utility model is carried out more Detailed description.It should be noted that it can be directly in another element when element is expressed " being fixed on " another element Upper or placed in the middle there may be one or more therebetween elements.When an element is expressed " connection " another element, it can To be directly to another element or elements placed in the middle there may be one or more therebetween.This specification is used Term " on ", "lower", "inner", "outside", the instructions such as " bottom " orientation or positional relationship be orientation based on the figure or Positional relationship is merely for convenience of describing the present invention and simplifying the description, rather than the device or member of indication or suggestion meaning Part must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as limiting the present invention. In addition, term " first ", " second " " third " etc. are used for description purposes only, it is not understood to indicate or imply relatively important Property.

Unless otherwise defined, technical and scientific term all used in this specification and the skill for belonging to the utility model The normally understood meaning of the technical staff in art field is identical.Art used in the description of the utility model in this specification Language is only for the purpose of describing specific embodiments, and is not intended to limitation the utility model.Art used in this specification Language "and/or" includes any and all combinations of one or more related listed items.

In addition, as long as technical characteristic involved in the utility model different embodiments disclosed below is each other Not constituting conflict can be combined with each other.

Referring to Fig. 1, Fig. 1 is the structural schematic diagram of long drill bit in the utility model embodiment.The utility model embodiment A kind of long drill bit 100 provided, including knife handle 10, interconnecting piece 20, processing department 30, one end of knife handle 10 and the interconnecting piece 20 One end connection, the other end of the interconnecting piece 20 are connect with one end of processing department 30.

Specifically, knife handle 10 is cylindrical body, long drill bit 100 has rotation axis A, the axis of rotation axis A and knife handle 10 It is overlapped.When being processed using long drill bit 100, which is rotated around rotation axis A.

The interconnecting piece 20 is in a circular table shape, and the diameter of one end is greater than the other end.In the present embodiment, one end of knife handle 10 It is connect with one end of the interconnecting piece 20, and the diameter of the knife handle 10 is equal to 20 one end end of interconnecting piece connected to it The diameter in face.

The processing department 30 is substantially cylindrical, and one end is connect with one end of the knife handle 10, and the processing department 30 diameter is equal to the diameter of 20 the other end face of interconnecting piece.

It please refers to Fig. 2 and combines Fig. 1, specifically, the side of the processing department 30 is provided at least two chip pockets 31, institute State the other end face that chip pocket 31 is extended to processing department 30 by one end of processing department 30.Shape between two adjacent chip pockets 31 At there is land 32.The chip pocket 31 is equal with the quantity of land 32, and the chip pocket 31 and land 32 are in the shape of a spiral.

In order to preferably cooperate the drilling of land 32, the chip pocket 31 is in the shape of a spiral.Each chip pocket 31 and a sword Band 32 is connected, and is connected with another land 32.Chip pocket 31 is used for when land 32 carries out drilling processing to workpiece, by drilling Clast be discharged in time, be suitable for drill for high-speed.

Chip pocket 31 is extended spirally from the other end face of the processing department 30 to the other end of the interconnecting piece 20, and its edge It is gradually reduced perpendicular to the cross-sectional area on each section of rotation axis A.Bore operation is being carried out using the long drill bit 100 When, one end that 30 other end of processing department is connect to processing department 30 with interconnecting piece 20 is caused due to adding up for stress entire It is bigger by power closer to the part of interconnecting piece 20 in processing department 30.That is, processing department 30 along perpendicular to rotation axis A by processing department One end that 30 other end is connected as interconnecting piece 20, the power for needing to bear are increasing；Correspondingly, with 31 edge of chip pocket Be gradually reduced perpendicular to the cross-sectional area in each section of rotation axis A, processing department 30 in the same direction on each section Cross-sectional area becomes larger, and may make processing department 30 to have higher intensity, to prevent breaking phenomenon.

In the present embodiment, there are two the chip pocket 31 is total to, and two chip pockets 31 and two lands 32 are surround In the rotation axis A, and it is arranged alternately.Two chip pockets 31 and two lands 32 are in both with respect to the rotation axis A Central symmetry.

The other end face of the processing department 30 includes end face of multiple lands 32 far from described 20 one end of interconnecting piece, described The other end of processing department 30 is provided with the first notch 33, and first notch 33 is provided in the company separate on the land 32 The joint of socket part 20 one end end face and 32 medial surface of the land.Due to being provided with the first notch 33, the processing can be reduced The area of the other end face in portion 30, to reduce feed resistance of the long drill bit 100 when carrying out drilling processing.

The inclined-plane for forming first notch 33 connects with the end face on the land 32 far from described 20 one end of interconnecting piece, The joint forms the first cutting edge 34, the substantially rectilinear shape of first cutting edge 34.

In the present embodiment, there are two the land 32 is total to, correspondingly, there are two first cutting edge 34 is total, two First cutting edge 34 is parallel to each other, and two first cutting edges 34 partly overlap.

First notch 33 is interconnected with the chip pocket 31, the company of first notch 33 and the chip pocket 31 Logical place is provided with the second notch 35, and the bootable clast of second notch 35 more swimmingly enters in chip pocket 31, and can make More clasts enter in chip pocket 31, and then preferably the clast of drilling is discharged.

When long drill bit 100 carries out drilling processing, the knife handle 10 of long drill bit 100 is installed on the main shaft of drilling machine, with band Dynamic long drill bit 100 rotates about axis A rotation.It is carried out in process in hole of the long drill bit 100 to workpiece, when long drill bit 100 Front end (specifically, the one end of the land 32 far from the interconnecting piece 20) device to hole inner sidewall cutting when, will generate big The clast of amount (clast mainly cuts workpiece by the front end of long drill bit 100 and generates).If the area of the lateral surface of land 32 is larger, Necessarily cause between the lateral surface for thering is larger amount of clast to be present in land 32 and the inner sidewall in hole.The interior of hole is not only resulted in this way There is scratch in side wall, influences the roughness of the inner sidewall in hole, so that the workpiece after processing is not up to standard；Also result in land 32 Lateral surface serious wear, and then influence the service life of the long drill bit 100.

As shown in figure 3, the lateral surface setting fluted 321 of the land 32, the groove 321 is in the shape of a spiral.It is described recessed A side of slot 321 forms the second cutting edge 323.It is carried out in process in hole of the long drill bit 100 to workpiece, the first cutting edge 321 act on the bottom wall in hole, and the second cutting edge 323 acts on the inner sidewall in hole.Due to the groove 321 helically strip, and The lateral surface of one end on the land 32 far from the interconnecting piece 20, the other side of the groove 321 and the appearance are considered to be worth doing Slot 31 is connected to.In the inner sidewall cutting of 323 device to hole of the second cutting edge, clast a part of generation can retain in described recessed In slot 321, and progress into the chip pocket 31 of 321 other side of groove.Due to the connection separate on the land 32 The lateral surface area of the one end in portion 20 is smaller, therefore clast is not easy to remain on the land 32 one far from the interconnecting piece 20 Between the lateral surface at end and the inner sidewall in hole, so as to avoid the generation of above-mentioned phenomenon, extend the long drill bit 100 uses the longevity Life.

In the present embodiment, there are two the groove 321 is total to, and two grooves 321 are surrounded on the rotary shaft Line A, and two grooves 321 are centrosymmetric relative to the rotation axis A.

The beneficial effects of the utility model are: compared with prior art, the utility model provides a kind of packet of long drill bit 100 It includes: knife handle 10, interconnecting piece 20 and processing department 30, wherein one end of the processing department 30 is connect with one end of the knife handle 10, institute The side for stating processing department 30 is provided at least two chip pockets 31, and land 32 is formed between two adjacent chip pockets 31, described In the shape of a spiral, chip pocket 31 is from the other end face of the processing department 30 to the another of the interconnecting piece 20 for chip pocket 31 and land 32 One end extends spirally, and its edge is gradually reduced perpendicular to the cross-sectional area on each section of rotation axis A.Based on the above structure Cross-sectional area with chip pocket 31 along each section perpendicular to rotation axis A is gradually reduced, and processing department 30 is in the same direction On the cross-sectional area in each section become larger, may make processing department 30 that there is higher intensity, to prevent breaking phenomenon.

Finally, it should be noted that above embodiments are only to illustrate the technical solution of the utility model, rather than its limitations； Under the thinking of the utility model, it can also be combined between the technical characteristic in above embodiments or different embodiments, Step can be realized with random order, and there are many other variations of the different aspect of the utility model as described above, be Simplicity, they do not provide in details；Although the utility model is described in detail with reference to the foregoing embodiments, this The those of ordinary skill in field it is understood that it is still possible to modify the technical solutions described in the foregoing embodiments, Or equivalent replacement of some of the technical features；And these are modified or replaceed, and do not make the sheet of corresponding technical solution Matter departs from the scope of the technical solutions of the embodiments of the present invention.

Claims (10)

1. a kind of high intensity long drill bit, has rotation axis characterized by comprising

Knife handle；

Interconnecting piece, one end are connect with one end of the knife handle；

Processing department, one end are connect with the other end of the interconnecting piece, and the side of the processing department is provided at least two chip pockets, Land is formed between two neighboring chip pocket, in the shape of a spiral, the chip pocket is by processing department for the chip pocket and the land The other end face extended spirally to the other end of the interconnecting piece, and the chip pocket is along perpendicular to each of the rotation axis Cross-sectional area on a section is gradually reduced.

2. high intensity long drill bit according to claim 1, which is characterized in that the other end of the processing department is provided with first Notch, first notch are set to connecting far from described interconnecting piece one end end face and the land medial surface on the land Place.

3. high intensity long drill bit according to claim 2, which is characterized in that first notch and the chip pocket are mutual The connectivity part of connection, first notch and the chip pocket is provided with the second notch.

4. high intensity long drill bit according to claim 1, which is characterized in that there are two the chip pocket is total, and two Chip pocket and two lands are surrounded on the rotation axis, and are arranged alternately.

5. high intensity long drill bit according to claim 4, which is characterized in that two chip pockets are relative to the rotation axis It is centrosymmetric.

6. high intensity long drill bit according to claim 2, which is characterized in that formed the inclined-plane of first notch with it is described The joint of end face on land far from described interconnecting piece one end forms the first cutting edge.

7. high intensity long drill bit according to claim 6, which is characterized in that first cutting edge is linear, described There are two first cutting edge is total, two the first cutting edges are parallel to each other, and two the first cutting edges partly overlap.

8. high intensity long drill bit according to claim 7, which is characterized in that the lateral surface setting of the land is fluted, In the shape of a spiral, a side of the groove forms the second cutting edge to the groove.

9. high intensity long drill bit according to claim 8, which is characterized in that the groove is located on the land far from institute The lateral surface of one end of interconnecting piece is stated, the other side of the groove is connected to the chip pocket.

10. high intensity long drill bit according to claim 8, which is characterized in that there are two the groove is total, and two recessed Grooved ring is around in the rotation axis, and two grooves are centrosymmetric relative to the rotation axis.