CN210080745U - Cutter assembly for machining inner wall groove of hole - Google Patents
Cutter assembly for machining inner wall groove of hole Download PDFInfo
- Publication number
- CN210080745U CN210080745U CN201920455493.6U CN201920455493U CN210080745U CN 210080745 U CN210080745 U CN 210080745U CN 201920455493 U CN201920455493 U CN 201920455493U CN 210080745 U CN210080745 U CN 210080745U
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- cutter
- hole
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- holder
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- 238000003754 machining Methods 0.000 title claims abstract description 23
- 238000005520 cutting process Methods 0.000 claims abstract description 18
- 230000002093 peripheral effect Effects 0.000 claims abstract description 5
- 239000007787 solid Substances 0.000 claims description 5
- ZJEWVOJUXVSQAT-UHFFFAOYSA-N Arborone Natural products OCC1C(OCC1(O)C(=O)c2ccc3OCOc3c2)c4ccc5OCOc5c4 ZJEWVOJUXVSQAT-UHFFFAOYSA-N 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 8
- 238000000034 method Methods 0.000 abstract description 7
- 230000002035 prolonged effect Effects 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 6
- 238000009434 installation Methods 0.000 description 4
- 238000010276 construction Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- 206010044565 Tremor Diseases 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 238000005496 tempering Methods 0.000 description 1
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Abstract
The utility model relates to a cutter field, in particular to cutter unit spare of wall slot in processing hole. The cutter assembly for machining the wall groove in the hole comprises a cutter sleeve and a cutter bar, one end of the cutter bar is inserted into the cutter sleeve, the other end of the cutter bar is provided with a cutter, the cutter sleeve comprises a cutter seat fixing section and a cutter sleeve extending section extending out of the cutter seat, the cutter bar fixing hole for fixing the cutter bar on the cutter sleeve is eccentrically arranged, the minimum distance between the outer peripheral surface of the cutter sleeve extending section and the central axis of the cutter bar is smaller than the minimum distance between the cutting part on the cutter and the central axis of the cutter bar, and the cutting part of the cutter is axially suspended outside the cutter sleeve extending section. The knife pouch of knife pouch stretches out the section and can stretch into treating the machining hole in, has prolonged the effective length of processing of cutter arbor, has guaranteed the rigidity of cutter arbor, can stretch into through the cutter arbor and process the less hole of diameter and degree of depth, guarantees great application scope, has solved present cutter unit and need increase the cutter arbor diameter or increase the problem that manufacturing cost that cutter arbor length caused when processing apart from the downthehole groove far away of terminal surface is high.
Description
Technical Field
The utility model relates to a cutter field, in particular to cutter unit spare of wall slot in processing hole.
Background
Touch seat class spare part and be the key part among the high tension switchgear, its inside design usually has a plurality of rectangle annular, the rectangle annular is processed through cutter unit with man-hour, as shown in fig. 1, cutter unit includes broach shell 100 and cutter arbor 200, cutter arbor 200 one end cartridge is to broach shell 100 in, the other end stretches out broach shell 100, the one end of stretching out broach shell 100 is provided with cutter 300, in operation, broach shell 100 one end is fixed on blade holder 400, the other end stretches out blade holder 400, cutter arbor 200 stretches into and treats the machined hole downthehole, the processing goes out the groove on the pore wall. In order to guarantee the quality of the contact seat type parts, the roughness of the rectangular ring groove is required to be high in production, the rectangular ring groove far away from the end face is required to be increased in length to meet the requirement of machining size, but the rigidity of the cutter bar is difficult to guarantee by the simple increase of the length of the cutter bar, the cutter bar is easy to vibrate in the machining process, lines of vibration appear on the parts, the roughness of the parts cannot reach the standard, the qualification rate is low, and the problem of high production cost is caused. Can make the cutter arbor satisfy the rigidity requirement through increasing cutter arbor diameter, but because touch seat class part kind is more, the cutter arbor application scope of gross diameter is less, need use the cutter arbor of multiple model to process the touch seat class spare part of different grade type respectively, production efficiency is low, can cause the high problem of manufacturing cost equally.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a cutter unit spare of wall slot in processing hole to solve present cutter unit spare and need increase the cutter arbor diameter or increase the problem that manufacturing cost is high that cutter arbor length caused when processing apart from the downthehole groove far away of terminal surface.
In order to achieve the above purpose, the technical scheme of the utility model is that: the hole inner wall groove machining tool set comprises a tool holder and a tool bar, one end of the tool bar is inserted into the tool holder, a tool is arranged at the other end of the tool bar, the tool holder comprises a tool holder fixing section and a tool holder extending section, the tool holder fixing section is used for fixing on the tool holder, the tool holder extending section extends out of the tool holder, the tool holder fixing hole for fixing the tool bar is eccentrically arranged on the tool holder, the minimum distance between the outer peripheral surface of the tool holder extending section and the central axis of the tool bar is smaller than the minimum distance between the cutting part and the central axis of the tool bar on the tool, and the cutting part of the tool is axially suspended and extends out of the tool holder extending.
Has the advantages that: the cutter periphery is provided with the broach shell, the eccentric setting of cutter arbor fixed orifices on the broach shell simultaneously, make cutter cutting part overhang stretch out the outside of section at the broach shell, during the use, the broach shell of broach shell stretches out the section and can stretch into in treating the processing hole, the broach shell stretches out the section this moment and has prolonged the effective length of processing of cutter arbor in other words, the rigidity of cutter arbor has been guaranteed simultaneously, and the machining quality is improved, to the less hole of ordinary diameter and degree of depth, can process through the part that the broach shell stretches out the broach shell, guarantee great application scope, the problem that present cutter assembly need increase the cutter arbor diameter or increase the manufacturing cost that cutter arbor length caused when the downthehole groove far away of process distance terminal surface has been solved.
Furthermore, in order to facilitate installation of the knife sheath, the outer diameter of the knife sheath extending section is larger than that of the knife holder fixing section, and one end of the knife sheath extending section, which is close to the knife holder, is provided with a positioning surface which is used for facing the knife holder and is matched with the knife holder in a positioning manner. The tool sleeve is convenient to position and install through the positioning surface.
Furthermore, in order to ensure the strength of the cutter sleeve, the cutter bar fixing hole is a blind hole, and the cutter holder fixing section is of a solid structure. The cutter holder fixing section is of a solid structure, so that the strength of the cutter sleeve is improved.
Furthermore, in order to fix the cutter bar conveniently, a threaded hole for installing a set screw for fixing the cutter bar is formed in the cutter sleeve.
Further, in order to guarantee the fixed effect to the cutter arbor, the screw hole sets up at least two, and the axis coincidence of at least a pair of screw hole and perpendicular to cutter arbor the central axis and the plane that the broach shell central axis is located, at least a pair of screw hole symmetrical arrangement makes the atress of cutter arbor both sides, guarantees fixed effect in the both sides of cutter arbor fixed orifices.
Further, in order to guarantee a better fixing effect, at least two pairs of threaded holes are axially arranged along the cutter sleeve.
Drawings
FIG. 1 is a schematic view of a prior art construction of a tool assembly for machining inside-wall grooves of holes;
FIG. 2 is a schematic structural view of an embodiment of the tool assembly for machining a groove in an inner wall of a hole according to the present invention;
FIG. 3 is a schematic view of a machining state of an embodiment of the tool assembly for machining a groove in an inner wall of a hole according to the present invention;
FIG. 4 is a schematic view of a tool holder of an embodiment of the tool assembly for machining a groove in an inner wall of a hole according to the present invention;
FIG. 5 is a right side view of FIG. 4;
in the figure: 100. a knife sheath; 200. a cutter bar; 300. a cutter; 400. a tool apron; 1. a knife sheath; 11. a cutter bar fixing hole; 12. a tool apron fixing section; 13. A knife sleeve extending section; 131. positioning the surface; 14. a threaded hole; 15. the central axis of the knife sleeve; 16. the thinnest part; 2. a cutter bar; 21. a cutter bar fixing end; 22. a cutter fixing end; 23. the central axis of the cutter bar; 3. a cutter; 4. a tool apron; 5. a hole to be processed; 6. a rectangular ring groove.
Detailed Description
The following describes embodiments of the present invention with reference to the accompanying drawings.
The utility model discloses a concrete embodiment of cutter unit spare in wall slot in processing hole, as shown in fig. 2 and fig. 4, cutter unit spare in wall slot in processing hole includes knife pouch 1 and cutter arbor 2, and knife pouch 1 has cutter arbor fixed orifices 11 of fixed cutter arbor 2, 11 eccentric settings in cutter arbor fixed orifices, and 2 one ends of cutter arbor are cutter arbor stiff end 21 in cartridge to cutter arbor fixed orifices 11, and the other end is the cutter stiff end 22 that is equipped with cutter 3. Alloy steel is selected as a blank material of the cutter sleeve 1 in the embodiment and is subjected to quenching and tempering treatment.
Knife pouch 1 has the blade holder fixed section 12 of fixing on blade holder 4 and stretches out blade holder 4 overhang at the blade holder of 4 one sides and stretches out section 13, blade holder fixed section 12 and the blade holder stretch out section 13 coaxially, for convenience fixed to knife pouch 1 with guarantee the fixed effect to knife pouch 1, in this embodiment, the external diameter that the blade holder stretches out section 13 is greater than the external diameter of blade holder fixed section 12, and stretch out section 13 and blade holder fixed section 12 junction at the blade holder and form the step face, wherein be in the blade holder stretch out the part of radially extending on section 13 and form towards blade holder 4 and with blade holder 4 location complex locating surface 131, during installation knife pouch 1, through locating surface 131 location knife pouch 1, make things convenient for the definite of knife pouch 1 position. In order to guarantee the fixed effect of cutter arbor 2, cutter arbor fixed orifices 11 on the cutter sleeve 1 are the blind hole to blade holder fixed section 12 is solid construction, fastens on blade holder 4 through blade holder fixed section 12 during the installation, compares the mode in the cutter arbor passed the blade holder among the prior art, and solid blade holder fixed section 12 intensity is higher, is difficult to warp and tremble. The cutter bar fixing hole 11 is a blind hole, so that the cutter can be prevented from axially moving when stressed. In other embodiments, the fixing method in the prior art may also be adopted, for example, the cutter bar fixing hole is a through hole, and the cutter bar passes through the cutter bar fixing hole when being fixed. In other embodiments, the outer diameters of the tool sheath extending section and the tool holder fixing section may be equal to each other, or the outer diameter of the tool sheath extending section may be smaller than the outer diameter of the tool holder fixing section, in which case, the installation efficiency of the tool sheath is low.
As shown in fig. 3 and 5, the holder fixing hole 11 is eccentrically disposed, and in order to enable machining of the rectangular ring groove 6 having a deep position without excessively increasing the length of the holder 2, the minimum distance from the holder central axis 23 on the outer peripheral surface of the holder protruding section 13 is smaller than the distance between the cutting portion on the tool 3 and the holder central axis 23, i.e., the distance from the cutting portion to the outer peripheral surface of the holder 2 is greater than the wall thickness of the thinnest point 16 of the holder 1, so that the cutting portion of the tool 3 can be suspended outside the thinnest point 16 of the holder protruding section 13 in the axial direction of the holder 1, and the tool 3 includes two parts: namely a shank portion fixed to the shank and a cutting portion for cutting the recess. When a deeper rectangular ring groove 6 is processed, the cutter sleeve extending section 13 can extend into the hole 5 to be processed and does not interfere with the hole wall of the hole 5 to be processed, and the cutting part of the cutter 3 can process the rectangular ring groove 6 on the hole wall of the hole 5 to be processed. Because the knife pouch stretches out section 13 and can stretch into in treating the processing hole 5, be equivalent to extension cutter arbor 2's effective length, knife pouch 1 has guaranteed cutter arbor 2's intensity in stretching into treating the processing hole 5 simultaneously, has avoided the vibration interference between work piece and cutter 3 in the cutting process effectively, has guaranteed the smooth degree on rectangular ring groove 6 surface, has improved the processingquality and the quality stability of part. In addition, for the common hole 5 to be processed with a smaller diameter, the cutter sleeve 1 does not need to extend into the hole 5 to be processed, and only the cutter bar 2 can extend into the hole 5 to be processed for processing, so that the application range of the cutter assembly is ensured.
The cutter bar 2 and the cutter sleeve extending section 13 are fixed by fastening screws, as shown in fig. 4 and 5, in this embodiment, the fastening screws are arranged in pairs, and the same pair of fastening screws are located on two radial sides of the cutter bar fixing hole 11, the axes of the same pair of fastening screws are overlapped and perpendicular to the plane passing through the cutter bar central axis 23 and the cutter sleeve central axis 15, the fastening screws are arranged in two pairs, and the two pairs of fastening screws are arranged along the axial direction of the cutter sleeve 1. Correspondingly, the cutter sleeve 1 is provided with threaded holes 14 corresponding to the set screws one by one, and the axes of the threaded holes 14 are superposed and perpendicular to the plane passing through the central axis 23 of the cutter rod and the central axis 15 of the cutter sleeve. The same pair of screw holes 14 are arranged on two sides of the cutter bar fixing hole 11, so that the fixing effect on the cutter bar 2 can be guaranteed, the arrangement direction of the same pair of screw holes 14 is perpendicular to the eccentric direction of the cutter bar fixing hole 11, the situation that holes are formed in the thinnest position of the wall of the cutter sleeve 1 is avoided, and the strength of the cutter sleeve 1 is guaranteed. In other embodiments, the tool may be secured to the tool holder by other means commonly used in the art, such as bolting, interference fit, etc. In other embodiments, the number and arrangement form of the threaded holes may be adjusted as required, for example, the threaded holes may be only one or more than two, the arrangement form may be circumferentially and uniformly arranged, or the threaded holes may be arranged in pairs or not in pairs, and each threaded hole is arranged in the axial direction of the tool holder.
The size of the knife sleeve 1 is determined by the following steps: 1) measuring the size of a tool apron hole of a machine tool, and determining that the outer diameter size of a tool sleeve 1 matched with a tool apron 4 is phi 50 mm, and the length is designed to be 85 mm; 2) determining the aperture size of the cutter bar fixing hole 11 to be phi 32 mm according to the diameter of the used cutter bar 2; 3) on the premise of not generating machining interference, determining that the minimum wall thickness of the cutter bar fixing hole 11 is 7mm according to the inner diameter size phi 162mm of the rectangular ring groove 6, the groove depth 5mm and the maximum machining depth 12mm of the cutting part of the cutter 3; 4) according to the outer diameter of the original standard cutter sleeve and the problem of chip removal in actual processing, the outer diameter of the eccentric part is determined to be 60mm on the premise of ensuring smooth chip removal.
In the machining process, the rectangular ring groove 6 is machined through rough turning and finish turning, wherein the rough turning cutting parameters are ap =0.3mm, f =0.13mm/r, Vc =180m/min, and the finish turning allowance is 0.15 mm; finish turning cutting parameters are ap =0.15mm, f =0.08mm/r and Vc =150m/min, wherein ap represents the back draft, namely the vertical distance between a machined surface and a surface to be machined on a workpiece; f represents the feed amount, i.e., the amount of position of the tool relative to the workpiece in the feed direction.
Through the utility model discloses a cutter unit spare processing place aperture is great, the darker rectangle annular 6 in position, does not need special cutter unit spare to process, has reduced the quantity of cutter arbor 2, has avoided the tool changing of making a round trip simultaneously, has improved machining efficiency, has reduced manufacturing cost. The cutter sleeve 1 extends into the hole 5 to be processed, so that the vibration interference between a workpiece and a cutter 3 in the cutting process is effectively avoided, the smoothness degree of the surface of the groove part is ensured, meanwhile, the rotating speed is increased to 100 plus material 200r/min from the original 10-20r/min when the cutter bar 2 is simply processed, the processing efficiency is improved, and the labor intensity is reduced.
Claims (6)
1. The cutter unit spare of wall slot in processing hole, including knife pouch and cutter arbor, cutter arbor one end cartridge is in the knife pouch, and the other end is equipped with the cutter, the knife pouch stretches out section, its characterized in that including the knife holder fixed section that is used for fixing on the knife holder and the knife pouch that stretches out the knife holder: the cutter holder fixing hole for fixing the cutter holder on the cutter holder sleeve is eccentrically arranged, the minimum distance between the outer peripheral surface of the extending section of the cutter holder and the central axis of the cutter holder is smaller than the minimum distance between the cutting part on the cutter and the central axis of the cutter holder, and the cutting part of the cutter axially extends outside the extending section of the cutter holder sleeve so that the extending section of the cutter holder can extend into the hole to be machined.
2. The tool assembly for machining inside wall grooves of holes of claim 1, wherein: the outer diameter of the cutter sleeve extending section is larger than that of the cutter holder fixing section, and a positioning surface which faces the cutter holder and is matched with the cutter holder in a positioning mode is arranged at one end, close to the cutter holder, of the cutter sleeve extending section.
3. The tool assembly for machining a inside wall groove of a hole according to claim 1 or 2, wherein: the cutter bar fixing hole is a blind hole, and the cutter holder fixing section is of a solid structure.
4. The tool assembly for machining a inside wall groove of a hole according to claim 1 or 2, wherein: the cutter sleeve is provided with a threaded hole for installing a fastening screw for fixing the cutter bar.
5. The tool assembly for machining inside wall grooves of holes of claim 4, wherein: the threaded holes are at least two, and the axes of at least one pair of threaded holes are overlapped and perpendicular to the plane where the central axis of the cutter bar and the central axis of the cutter sleeve are located.
6. The tool assembly for machining inside wall grooves of holes of claim 5, wherein: at least two pairs of threaded holes are axially arranged along the cutter sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920455493.6U CN210080745U (en) | 2019-04-04 | 2019-04-04 | Cutter assembly for machining inner wall groove of hole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920455493.6U CN210080745U (en) | 2019-04-04 | 2019-04-04 | Cutter assembly for machining inner wall groove of hole |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210080745U true CN210080745U (en) | 2020-02-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920455493.6U Active CN210080745U (en) | 2019-04-04 | 2019-04-04 | Cutter assembly for machining inner wall groove of hole |
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| Country | Link |
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| CN (1) | CN210080745U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112276184A (en) * | 2020-09-30 | 2021-01-29 | 株洲壹星科技股份有限公司 | Motor slot wedge cutting device |
-
2019
- 2019-04-04 CN CN201920455493.6U patent/CN210080745U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112276184A (en) * | 2020-09-30 | 2021-01-29 | 株洲壹星科技股份有限公司 | Motor slot wedge cutting device |
| CN112276184B (en) * | 2020-09-30 | 2022-05-03 | 株洲壹星科技股份有限公司 | Motor slot wedge cutting device |
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