CN217701490U - Inserting strip type multistage reaming cutter - Google Patents
Inserting strip type multistage reaming cutter Download PDFInfo
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- CN217701490U CN217701490U CN202221414905.XU CN202221414905U CN217701490U CN 217701490 U CN217701490 U CN 217701490U CN 202221414905 U CN202221414905 U CN 202221414905U CN 217701490 U CN217701490 U CN 217701490U
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Abstract
The utility model relates to a multistage reamer of cutting bar formula, cutter arbor front end disjunctor set up the cutting post, and the spiral chip groove of twice central symmetry is seted up along the axial in the cutting post periphery, and set up along the trough edge on one side trough edge of spiral chip groove and follow a plurality of sword strip cross-under holes on the different axle sections that the diameter increases progressively backward in the cutting post outer end diameter, and a plurality of sword strips insert a plurality of sword strips in proper order backward in the plurality of sword strip cross-under holes, the sword strip cross-under hole on two spiral chip groove trough edges is worn out to sword strip both ends blade section, and the outer sword mouth orientation of both ends sword section is opposite and the rotary size increases progressively backward along the cutting post, and the isosceles trapezoid constant head tank is seted up to middle square section intermediate position, set up the locating hole on the cutting post, locating hole internal thread connect countersunk head set screw soon, countersunk head set screw's head supports the bulb of location isosceles trapezoid constant head tank for the center. The drilling tool is simple in structure, convenient to install, disassemble and maintain, firm in assembling and positioning, capable of completing drilling operation at one time, free of replacing the tool bars for multiple times and capable of improving drilling efficiency.
Description
Technical Field
The utility model relates to a drill bit structure, the multistage reamer of insert strip formula that specifically says so.
Background
In the existing machining, the drilling size is smaller than 100mm, multiple-size cutter bars are usually adopted to sequentially drill and ream, the process steps are multiple, time and labor are wasted, and the drilling operation efficiency is not convenient to improve.
Disclosure of Invention
The utility model provides a simple structure, installation, dismantlement, maintenance convenience, the positioning and assembling is firm, can once accomplish drilling operation, need not to change the sword strip many times, improves the multistage reamer of cutting slips formula of drilling efficiency.
The utility model adopts the technical proposal that: the utility model provides a multistage reamer of cutting inserting strip formula, includes the cutter arbor, its characterized in that: the cutter bar is characterized in that the front end of the cutter bar is integrally provided with a cutting column, two centrosymmetric spiral chip grooves are formed in the periphery of the cutting column along the axial direction, a plurality of cutter bar through holes are formed in one side groove edge of each spiral chip groove, the cutter bar through holes are formed in different axial sections, the diameters of the outer ends of the cutting column increase backwards, a plurality of cutter bars are sequentially inserted into the cutter bar through holes backwards, each cutter bar comprises a middle square section and two end blade sections, the two end blade sections penetrate through the cutter bar through holes in the groove edges of the two spiral chip grooves, the outer blade mouths of the two end blade sections face oppositely, the rotating sizes of the outer blade mouths of the two end blade ends of the plurality of cutter bars increase backwards along the cutting column, an inverted isosceles trapezoid positioning groove is formed in the middle of the middle square section, a plurality of positioning holes which correspond to the cutter bar through holes and are communicated with each other are formed in the cutting column, a countersunk head of the countersunk head positioning screw is of the countersunk head screw and has a structure, and the center of the inverted isosceles trapezoid positioning groove is abutted against the head of the countersunk head screw.
The knife strip is made of high-speed steel.
The spiral chip groove penetrates through the peripheral wall of the cutting column in the front and back direction.
The two adjacent outer cutting edges with the progressively increased outer cutting edge rotating sizes of the two end cutting edge sections are overlapped.
The cutter bar is made of alloy steel.
The utility model discloses a rotatory processing dimension of cross-under both ends blade section outer blade increases cutter bar on the cutting post that the shaft part increases progressively, and the bulb through countersunk head set screw is from the location locking cutter bar, thereby accomplish from little to big different cutter bars drilling reaming to required size aperture processing in proper order, combine the chip removal of spiral chip groove, can process after the quick stable cross-under of cutter bar, need not frequently to change unidimensional cutter bar, and the bayonet structure of cutter bar, can take out alone after arbitrary cutter bar damages, change, its installation, dismantle, it is convenient to maintain, greatly improve drilling efficiency.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic perspective view of the present invention;
FIG. 3 is a drawing showing the positioning of the multi-blade bar in the cutting post according to the present invention;
fig. 4 is a schematic structural view of the blade of the present invention.
In the figure: the cutter comprises a cutter bar 1, a cutting column 2, a spiral drainage groove 3, a shaft section 4, a cutter strip through hole 5, a positioning hole 6, a cutter strip 7, a middle square section 8, an inverted isosceles trapezoid positioning groove 9, a cutting edge section 10, a countersunk head positioning screw 11, a ball head 12 and an outer cutting edge 13.
Detailed Description
The following is further described with reference to the accompanying drawings.
As shown in fig. 1-4, a multi-stage reamer of cutting insert type comprises a cutter bar 1, a cutting post 2, two cutter bars 7 and a countersunk positioning screw 11, wherein the cutting post 2 is integrally arranged at the front end of the cutter bar 1, two spiral chip grooves 3 which are centrosymmetric are axially arranged on the periphery of the cutting post, the spiral chip grooves penetrate through the peripheral wall of the cutting post in the front and back direction, a plurality of cutter bar through holes 5 are formed in one side groove edge of each spiral chip groove along the groove edge, the cutter bar through holes are respectively formed in different axial sections 4 of the outer end of the cutting post, the diameters of the cutter bar through holes increase backwards, the cutter bars 7 are sequentially inserted into the cutter bar through holes backwards, each cutter bar 7 comprises a middle square section 8 and two end cutting edge sections 10, the two end cutting edge sections penetrate through the cutter bar through holes 5 of the groove edges of the two spiral chip grooves, the outer cutting edges 13 of the two end cutting edge sections face opposite directions, the rotating sizes of the outer cutting edges of the two end cutting edges of the cutter bars are increased backwards along the cutting post, and a positioning groove 9 is formed in the middle position of the middle square section 8; the cutting column is provided with a plurality of positioning holes 6 which respectively correspond to the plurality of tool bar through holes and are communicated with the tool bar through holes, the positioning holes are in threaded connection with countersunk head positioning screws 12 in a screwing mode, and the heads of the countersunk head positioning screws are of a ball head 13 structure with the center abutting against and positioning the inverted isosceles trapezoid positioning grooves.
In this embodiment, there is overlap in two liang of adjacent outer cutting edge rotary sizes that both ends blade section outer cutting edge rotary size increases progressively.
The blade bar of this embodiment is preferably made of high speed steel.
Claims (5)
1. The utility model provides a multistage reamer of cutting inserting strip formula, includes the cutter arbor, its characterized in that: the cutter bar is characterized in that the front end of the cutter bar is integrally provided with a cutting column, two centrosymmetric spiral chip grooves are formed in the periphery of the cutting column along the axial direction, a plurality of cutter bar through holes are formed in one side groove edge of each spiral chip groove, the cutter bar through holes are formed in different axial sections, the diameters of the outer ends of the cutting column increase backwards, a plurality of cutter bars are sequentially inserted into the cutter bar through holes backwards, each cutter bar comprises a middle square section and two end blade sections, the two end blade sections penetrate through the cutter bar through holes in the groove edges of the two spiral chip grooves, the outer blade mouths of the two end blade sections face oppositely, the rotating sizes of the outer blade mouths of the two end blade ends of the plurality of cutter bars increase backwards along the cutting column, an inverted isosceles trapezoid positioning groove is formed in the middle of the middle square section, a plurality of positioning holes which correspond to the cutter bar through holes and are communicated with each other are formed in the cutting column, a countersunk head of the countersunk head positioning screw is of the countersunk head screw and has a structure, and the center of the inverted isosceles trapezoid positioning groove is abutted against the head of the countersunk head screw.
2. The bayonet type multistage reamer as claimed in claim 1, wherein: the knife strip is made of high-speed steel.
3. The bayonet-type multistage reamer as claimed in claim 1, wherein: the spiral chip groove runs through the periphery wall of the cutting column in the front and back direction.
4. The bayonet-type multistage reamer as claimed in claim 1, wherein: the two adjacent outer cutting edges with the progressively increased outer cutting edge rotating sizes of the two end cutting edge sections are overlapped.
5. The bayonet-type multistage reamer as claimed in claim 1, wherein: the cutter bar is made of alloy steel.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2022212527449 | 2022-05-24 | ||
| CN202221252744 | 2022-05-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217701490U true CN217701490U (en) | 2022-11-01 |
Family
ID=83798931
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221414905.XU Active CN217701490U (en) | 2022-05-24 | 2022-06-08 | Inserting strip type multistage reaming cutter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217701490U (en) |
-
2022
- 2022-06-08 CN CN202221414905.XU patent/CN217701490U/en active Active
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Legal Events
| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant |