CN210099750U - Internal grinding direct-mounted grinding wheel cutter bar - Google Patents
Internal grinding direct-mounted grinding wheel cutter bar Download PDFInfo
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- CN210099750U CN210099750U CN201920678271.0U CN201920678271U CN210099750U CN 210099750 U CN210099750 U CN 210099750U CN 201920678271 U CN201920678271 U CN 201920678271U CN 210099750 U CN210099750 U CN 210099750U
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Abstract
The utility model discloses an interior grinding dress emery wheel cutter arbor directly aims at providing a axiality precision height, changes the swift convenient interior grinding cutter arbor of emery wheel. The utility model discloses a following technical scheme realizes: the grinding wheel is directly installed and positioned on the conical surface C, the grinding wheel is pressed by the gasket (2) and the nut (3), a polygonal symmetrical structure which is symmetrically distributed is manufactured on the outer circle of the step cylinder D at the rear end of the root of the inner circle grinding cutter bar (1), and the perpendicularity of the plane of the shaft end nut (3) pressing the grinding wheel and the inner thread hole of the nut is less than 0.03 mm.
Description
Technical Field
The utility model relates to an interior round grinding directly adorns emery wheel cutter arbor for the small diameter hole of grinding high accuracy, low surface roughness value.
Background
High-precision grinding is an important technological method in modern machining technology. In the field of aviation, a plurality of small-diameter holes need to meet the design requirements of high precision and low surface roughness value through grinding. During the grinding process, the radial circular runout of the cutter bar is difficult to control, which is difficult for the grinding process. If the radial circle of the cutter bar jumps too much, the processed product often has the phenomena of large roundness error, large cylindricity error and the like, and the quality can not be ensured. The method for mounting the internal grinding wheel on the grinding machine generally adopts the following steps: the grinding wheel is attached by screws as shown in fig. 2, which are inserted through the inner bore of the grinding wheel and into threaded bores in the tool holder. For a long time, the grinding is only simply considered to be carried out by installing a grinding wheel on a knife sharpening shaft and locking the grinding wheel, so that the grinding wheel is fixed on a grinding machine for integral grinding. According to the actual production and use conditions, kraft paper is wound on the outer circle of the screw to fill the gap between the screw and the inner hole of the grinding wheel during installation (the gap is eliminated to prevent the grinding wheel from rotating during grinding); in the other method, the grinding wheel is connected with the grinding wheel shaft shown in the figure 3, the gap between the grinding wheel and the grinding wheel shaft is filled with adhesive, the grinding wheel is bonded on the grinding wheel shaft, and the grinding wheel shaft is connected to the cutter bar. The coaxiality precision of the grinding wheel and the cutter bar mounted through the screw or the grinding wheel shaft is low, the grinding wheel deviates from a rotation center in the rotation process of the grinding wheel, swing is generated, a small bending deformation is generated, and the dynamic balance precision is low. Particularly, when a high-precision small-diameter hole is ground, the rotating speed of the cutter bar is as high as 40000-60000 rpm, and the grinding precision and the surface roughness requirement of the small-diameter hole can be reduced by grinding with the grinding wheel with low dynamic balance precision. Grinding high precision small diameter holes requires frequent dressing of the wheel to obtain good grinding performance of the wheel abrasive particles. Grinding wheels used in grinding elongated workpieces are also frequently dressed to maintain the correct shape of the wheel. When the grinding wheel is too soft, the abrasive particles fall off before becoming blunt, the shape of the grinding wheel is poor, the original shape of the grinding wheel is lost, and the grinding wheel also needs to be frequently ground. Frequent dressing increases the frequency of changing the grinding wheel. When the bonded grinding wheel is replaced, the grinding wheel needs to be cracked firstly and taken down from the grinding wheel shaft, so that the time is wasted, and the environment is not protected.
SUMMERY OF THE UTILITY MODEL
The utility model provides an above-mentioned problem, it is high to provide a axiality precision, changes the swift convenient interior round grinding of emery wheel and directly adorns emery wheel cutter arbor.
In order to realize the above-mentioned purpose, the utility model provides an interior grinding directly adorns emery wheel cutter arbor, have one and connect step cylinder D's interior grinding cutter arbor 1, gasket 2, nut 3, a serial communication port, the epaxial system of grinding wheel of 1 necking down step of interior grinding cutter arbor has the circular conical surface C of the same with interior grinding wheel hole tapering, circular conical surface C is less than 0.005mm to the radial circle run-out of common axis of cutter arbor, the emery wheel is direct at circular conical surface C installation and location, compress tightly the emery wheel with packing ring 2 nut 3, and the step cylinder D excircle system of 1 root rear end of interior grinding cutter arbor has the polygonal symmetrical structure of axial symmetric distribution, the plane of the axle head nut 3 that compresses tightly the emery wheel is less than 0.03mm with the straightness that hangs down in nut.
The utility model discloses compare and have following beneficial effect in prior art:
the utility model discloses on interior round grinding cutter arbor with emery wheel direct mount location, the emery wheel is high with the axiality precision of interior round grinding cutter arbor, this dynamic balance precision of emery wheel when just having improved high-speed rotation, twine paper or viscose when having avoided the installation emery wheel simultaneously, the emery wheel of breaking when changing the emery wheel, the conical surface C of interior round grinding cutter arbor is unanimous with the emery wheel hole cooperation, the clearance that exists when eliminating with screw and emery wheel shaft installation emery wheel, the axiality precision improvement on interior round grinding cutter arbor of installation efficiency emery wheel abrasive wheel installation has been improved.
The utility model discloses a circular conical surface C and the unanimous structural style of emery wheel hole cooperation of interior round grinding cutter arbor do not need to bond the emery wheel on the grinding wheel axle with round emery wheel and cutter arbor in the screw connection, need not use the adhesive. The centering precision and the coaxiality precision of the inner circle grinding cutter bar and the inner circle grinding wheel after installation are high. And further improves the dynamic balance precision of the internal grinding cutter bar and the dynamic balance precision of the internal grinding wheel during high-speed rotating grinding. Thereby improving the grinding precision of the small-diameter inner hole and reducing the roughness value of the surface of the inner hole.
The utility model discloses there is the polygonal symmetrical structure (quadrangle or above polygon) of axisymmetric distribution at the step cylinder D excircle system of interior round grinding cutter arbor root rear end, is fit for spanner installation cutter arbor.
The utility model discloses a straightness that hangs down of plane and internal thread hole is less than 0.03 mm's special nut, has eliminated standard nut because the straightness error that hangs down of end plane and screw hole is big, the defect of the cutter arbor tip bending deformation that easily causes when compressing tightly.
The utility model discloses a conical surface C with the interior round grinding cutter arbor in the grinding wheel hole cooperation is unanimous, and it is swift convenient that the emery wheel is changed to interior round grinding cutter arbor.
The dynamic balance precision of the inner circle grinding wheel during high-speed rotation grinding is improved. Because the dynamic balance precision of the internal grinding cutter bar is improved, the coaxiality precision of the grinding wheel and the conical surface C of the cutter bar in direct installation and matching is high, and the bending deformation of the end part of the cutter bar is eliminated by pressing the nut, the dynamic balance precision of the internal grinding wheel during high-speed rotation grinding is improved. The utility model discloses a grinding high accuracy minor diameter hole provides an interior round grinding cutter arbor and selects.
Drawings
Fig. 1 is a schematic view of the internal grinding direct-mounted grinding wheel cutter bar of the utility model.
Figure 2 is a schematic view of a prior art internal grinding tool bar for use with a threaded grinding wheel.
Figure 3 is a schematic view of a prior art internal grinding tool bar with a grinding spindle attached to the grinding wheel.
In the figure: 1 internal grinding cutter bar, 2 gaskets, 3 nuts and 4 internal grinding wheels.
Detailed Description
See fig. 1. In the preferred embodiment described below, an internal grinding straight mounted grinding wheel holder has an internal grinding tool holder 1 connected to a stepped cylinder D, a spacer 2, and a nut 3. The grinding wheel shaft of the necking step of the inner circle grinding cutter bar 1 is provided with a conical surface C which is consistent with the inner hole taper of the inner circle grinding wheel, the radial circular runout of the conical surface C to the common axis of the cutter bar is less than 0.005mm, the grinding wheel is directly installed and positioned on the conical surface C, a gasket 2 and a nut 3 are used for pressing the grinding wheel, the excircle of a step cylinder D at the rear end of the root part of the inner circle grinding cutter bar 1 is provided with a polygonal symmetrical structure which is symmetrically distributed, and the perpendicularity of the plane of a shaft end nut 3 pressing the grinding wheel and an inner thread hole of.
The inner circle grinding cutter bar is of an axisymmetric structure, and the polygon of the step cylinder D, which is axisymmetrically distributed on the outer circle, is a quadrangle or a polygon above.
During grinding, the inner circle grinding cutter bar 1 is arranged on an inner circle grinding head of the precision grinding machine and is connected and positioned with the inner circle grinding head through the thread at the A position and the excircle and the end face at the B position; directly arranging a grinding wheel 4 on a conical surface at the position C of the internal grinding cutter bar 1, and matching a grinding wheel hole with the conical surface at the position C; the grinding wheel is tightly pressed on the inner circle grinding cutter bar by a gasket 2 and a nut 3; the interior grinding cutter arbor can adopt different materials, and concrete size also can be different and change according to grinding aperture and emery wheel overall dimension, and such transform all falls within the utility model discloses an within the scope of protection.
Claims (3)
1. The utility model provides an interior grinding directly adorns emery wheel cutter arbor, have one and connect interior grinding cutter arbor (1) of step cylinder D, packing ring (2), nut (3), a serial communication port, the system has the circular conical surface C of the tapering unanimity with interior grinding wheel hole on the emery wheel axle of interior grinding cutter arbor (1) necking down step, circular conical surface C is less than 0.005mm to the radial circle runout of cutter arbor common axis, the emery wheel is direct at circular conical surface C installation location, compress tightly the emery wheel with packing ring (2) nut (3), and the step cylinder D excircle system of interior grinding cutter arbor (1) root rear end has the polygonal symmetrical structure of axial symmetry distribution, the straightness that hangs down in the interior threaded hole of the plane of axle head nut (3) that compresses tightly the emery wheel is less than 0.03 mm.
2. The bar of internal grinding straight-mounted grinding wheel of claim 1, wherein: the polygon of step cylinder D excircle axisymmetric distribution is quadrangle or above polygon.
3. The bar of internal grinding straight-mounted grinding wheel of claim 1, wherein: the grinding wheel (4) is directly arranged on the C-position conical surface of the inner circle grinding cutter bar (1), and a grinding wheel hole is matched with the C-position conical surface; the grinding wheel is tightly pressed on the inner circle grinding cutter bar by a gasket (2) and a nut (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920678271.0U CN210099750U (en) | 2019-05-13 | 2019-05-13 | Internal grinding direct-mounted grinding wheel cutter bar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920678271.0U CN210099750U (en) | 2019-05-13 | 2019-05-13 | Internal grinding direct-mounted grinding wheel cutter bar |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210099750U true CN210099750U (en) | 2020-02-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920678271.0U Active CN210099750U (en) | 2019-05-13 | 2019-05-13 | Internal grinding direct-mounted grinding wheel cutter bar |
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| Country | Link |
|---|---|
| CN (1) | CN210099750U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110026897A (en) * | 2019-05-13 | 2019-07-19 | 成都凯天电子股份有限公司 | It is mounted directly the internal grinding knife bar of grinding wheel |
-
2019
- 2019-05-13 CN CN201920678271.0U patent/CN210099750U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110026897A (en) * | 2019-05-13 | 2019-07-19 | 成都凯天电子股份有限公司 | It is mounted directly the internal grinding knife bar of grinding wheel |
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