CN213471738U - Drilling cutter for graphite processing - Google Patents
Drilling cutter for graphite processing Download PDFInfo
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- CN213471738U CN213471738U CN202021938405.7U CN202021938405U CN213471738U CN 213471738 U CN213471738 U CN 213471738U CN 202021938405 U CN202021938405 U CN 202021938405U CN 213471738 U CN213471738 U CN 213471738U
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- cutter head
- drill bit
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Abstract
The utility model discloses a drilling cutter for graphite processing, which comprises a drill bit, a drill rod and a drill handle, wherein the drill bit and the drill handle are formed on two sides of the drill rod; the first cutter head is a frustum-shaped cutter head, the top surface circle of the first cutter head is positioned on the drill bit side, the bottom surface circle of the first cutter head is arranged on the second cutter head side, and the bottom surface circle is larger than the top surface circle and slightly smaller than the diameter of the section circle of the second cutter head; and spiral blade surfaces are formed on the conical surface of the first cutter head and the outer cylindrical surface of the second cutter head. The utility model discloses can carry out continuous spot facing work on graphite block blank to hole wall is polished twice in the processing hole position, has reduced the processing deviation greatly, has improved machining precision and machining efficiency.
Description
Technical Field
The utility model relates to a processing technology field of graphite product, concretely relates to drilling sword is used in graphite processing.
Background
The graphite material has small resistance temperature coefficient, low thermal inertia, fast heating and cooling, excellent physical performance, low thermal expansion coefficient and wide use, and may be used in making various sintering and heat processing containers. In the process of processing the graphite raw material into the graphite thermal processing container, various processing tools are required.
Wherein, the spot facing work cutter is mainly by the drilling sword, be used for drilling on the graphite block, but among the prior art, a drilling sword structure for graphite block drilling is too simple, mostly be the alloy cutter of pure steel cutter or single material, in the course of working, drilling inefficiency, and great processing deviation appears easily, for guaranteeing machining precision and with the concentricity of goods, increase the surplus when generally passing through the unloading, then carry out the mode that downthehole secondary mill processed and satisfy the processing requirement, the complexity of processing has been increased like this, and need relocate when carrying out the secondary mill, can consume longer process time, in addition, the deviation takes place easily at the in-process of location, influence the machining precision of graphite mould.
SUMMERY OF THE UTILITY MODEL
The technical problem solved by the utility model is to provide a drilling cutter for graphite processing to solve the defects in the technical background.
The utility model provides a technical problem adopt following technical scheme to realize:
a drilling cutter for graphite processing comprises a drill bit, a drill rod and a drill handle, wherein the drill bit comprises a conical head, and a drilling blade surface is arranged on the surface of the conical head; an assembling part used for being assembled and connected with a machine tool is formed on the upper part of the drill handle; the drill rod is a square drill rod, two ends of the drill rod are respectively connected with the drill bit and the drill handle, a first cutter disc and a second cutter disc are sequentially arranged on the drill rod from the drill bit side to the drill handle side, and an assembly clearance space is arranged between the first cutter disc and the drill bit and between the first cutter disc and the second cutter disc along the length direction of the drill rod; the first cutter disc is a frustum-shaped cutter disc, the second cutter disc is a cylindrical cutter disc, the top surface circle of the frustum-shaped cutter disc is positioned on the drill bit side and is consistent with the shape and size of the conical bottom of the drill bit, the bottom surface circle is larger than the top surface circle, the diameter of the bottom surface circle is 0.85 phi 2-0.92 phi 2, and phi 2 is the diameter of the section circle of the second cutter disc; the first blank trimming blade surface is formed on the conical surface of the first cutter head, the second blank trimming blade surface is formed on the outer cylindrical surface of the second cutter head, and the first blank trimming blade surface and the second blank trimming blade surface are both spiral blade surfaces.
By way of further limitation, the drill shank can be selectively arranged into one of a square shank, a Morse taper shank and a 7:24 taper shank due to different clamping modes on different machine tools.
And as a further limitation, the assembly clearance space between the first cutter disc and the drill bit and between the first cutter disc and the second cutter disc is 0.8-1.2 times of the diameter of the hole to be machined.
By way of further limitation, the first trimming edge face and the second trimming edge face are in the same rotating direction, and the edge face entry cutting angle of the first trimming edge face is larger than the edge face entry cutting angle of the second trimming edge face.
As a further limitation, spiral chip grooves are formed on the first trimming edge face and the second trimming edge face, are arranged in a crossed manner with the corresponding first trimming edge face or the second trimming edge face, and divide the corresponding trimming edge face into a plurality of unit sections.
Has the advantages that: the utility model relates to a drilling cutter for graphite processing, through the combination of drill bit, drill rod and drill handle, can carry out twice polishing to the pore wall when carrying out graphite blank surface drilling, improved the continuity of processing, reduced artifical intensity of labour, shortened manufacturing procedure, improved the efficiency of processing; meanwhile, the drilling cutter structure can also effectively improve the stability during drilling and machining and improve the practicability of the cutter during machining and use.
Drawings
Fig. 1 is a schematic structural diagram of a preferred embodiment of the present invention.
Wherein: 1. a drill shank; 2. a second cutter head; 3. drilling a cutter rod; 4. a first cutter head; 5. a drill bit.
Detailed Description
In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand and understand, the present invention is further explained by combining with the specific drawings.
Referring to fig. 1, a preferred embodiment of a drilling tool for graphite processing, in this embodiment, the drilling tool includes a drill bit 5, a drill rod 3 and a drill shank 1, the drill bit 5, the drill rod 3 and the drill shank 1 are formed separately, and the drill bit 5 and the drill shank 1 are disposed on both sides of the drill rod 3.
The drill bit 5 comprises a conical head and a cylindrical section formed at the rear part of the conical head, drilling blade surfaces are formed on the outer surfaces of the conical head and the cylindrical section, and the drilling blade surfaces are spiral blade surfaces; the drill handle 1 is a Morse taper handle, and an assembling part for assembling and connecting with a machine tool is formed at the upper part of the drill handle 1; the drill rod 3 is a square drill rod, a second cutter disc 2 and a first cutter disc 4 are sequentially arranged on the drill rod 3, and assembly clearance spaces are respectively arranged on the upper portion and the lower portion of the first cutter disc 4 of the drill rod 3, namely the assembly clearance spaces are formed between the upper surfaces of the first cutter disc 4 and the drill bit 5 and between the lower surfaces of the first cutter disc 4 and the second cutter disc 2, and the diameter of the assembly clearance space of a hole to be machined is 0.8-1.2 times.
In the embodiment, the first cutter disc 2 is a frustum-shaped cutter disc, the second cutter disc 4 is a cylindrical cutter disc, the minimum section circle of the first cutter disc 2 is positioned on the drill bit 5 side, the maximum section circle is positioned on the second cutter disc 4 side, the minimum section circle of the first cutter disc 2 is consistent with the section size of the cylindrical section of the drill bit 5, and the diameter of the maximum section circle is 0.9 of the diameter of the section circle of the second cutter disc. Meanwhile, a first fettling blade surface and a second fettling blade surface are respectively formed on the first cutter head 2 and the second cutter head 4, the first fettling blade surface and the second fettling blade surface are both spiral blade surfaces, the blade surfaces of the first fettling blade surface and the second fettling blade surface have the same rotating direction, the cutting edge surface entry cutting angle of the first fettling blade surface is 70 degrees, and the cutting edge surface entry cutting angle of the second fettling blade surface is 25 degrees. Meanwhile, spiral chip grooves are formed on the first blank trimming blade surface and the second blank trimming blade surface, are arranged at equal intervals, are crossed with the corresponding first blank trimming blade surface or the second blank trimming blade surface, and divide the corresponding blank trimming blade surface into a plurality of unit sections.
When the drilling cutter for graphite processing is used, the drill bit 5 is firstly installed on the lower end face of the cutter rotating rod 3, the drill bit 5 is firstly utilized to rotate a hole on the surface of a graphite block blank, a first fettling blade face of the first cutter head 4 and a second fettling blade face of the second cutter head 2 are respectively utilized to carry out primary and secondary inner surface fettling on an opening of the drill bit 5 after the hole is rotated, the hole wall is made to be smoother and smoother, scraps in the fettling process are discharged into an assembly gap space through spiral chip grooves, and are taken out after the cutter is withdrawn, and the drilling cutter is simple and convenient to operate.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Furthermore, it should be understood that various changes, modifications and/or alterations to the present invention may be made by those skilled in the art after reading the technical disclosure of the present invention, and all such equivalents may fall within the scope of the present invention as defined by the appended claims.
Claims (5)
1. A drilling cutter for graphite processing comprises a drill bit, a drill rod and a drill handle, and is characterized in that the drill bit comprises a conical head, and a drilling blade surface is arranged on the surface of the conical head; an assembling part used for being assembled and connected with a machine tool is formed on the upper part of the drill handle; the drill rod is a square drill rod, two ends of the drill rod are respectively connected with the drill bit and the drill handle, a first cutter disc and a second cutter disc are sequentially arranged on the drill rod from the drill bit side to the drill handle side, and an assembly clearance space is arranged between the first cutter disc and the drill bit and between the first cutter disc and the second cutter disc along the length direction of the drill rod; the first cutter disc is a frustum-shaped cutter disc, the second cutter disc is a cylindrical cutter disc, the top surface circle of the frustum-shaped cutter disc is positioned on the drill bit side and is consistent with the shape and size of the conical bottom of the drill bit, the bottom surface circle is larger than the top surface circle, the diameter of the bottom surface circle is 0.85 phi 2-0.92 phi 2, and phi 2 is the diameter of the section circle of the second cutter disc; the first blank trimming blade surface is formed on the conical surface of the first cutter head, the second blank trimming blade surface is formed on the outer cylindrical surface of the second cutter head, and the first blank trimming blade surface and the second blank trimming blade surface are both spiral blade surfaces.
2. The drilling tool for graphite processing according to claim 1, wherein the drill shank is one of a square shank, a morse taper shank, and a 7:24 taper shank.
3. The drilling tool for graphite machining according to claim 1, wherein the fitting clearance spaces between the first cutter head and the drill and between the first cutter head and the second cutter head are 0.8 to 1.2 times the diameter of the hole to be machined.
4. The drilling tool for graphite machining according to claim 1, wherein the first truing land has a land rotation direction identical to that of the second truing land, and the first truing land has a land approach angle larger than that of the second truing land.
5. The drilling tool for graphite processing according to claim 1, wherein spiral flutes are formed on each of the first and second blank-trimming faces, the spiral flutes being arranged to intersect with the corresponding first or second blank-trimming face and dividing the corresponding blank-trimming face into a plurality of unit sections.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021938405.7U CN213471738U (en) | 2020-09-08 | 2020-09-08 | Drilling cutter for graphite processing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021938405.7U CN213471738U (en) | 2020-09-08 | 2020-09-08 | Drilling cutter for graphite processing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213471738U true CN213471738U (en) | 2021-06-18 |
Family
ID=76417973
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021938405.7U Active CN213471738U (en) | 2020-09-08 | 2020-09-08 | Drilling cutter for graphite processing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213471738U (en) |
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2020
- 2020-09-08 CN CN202021938405.7U patent/CN213471738U/en active Active
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