CN212350415U - Self-centering tool for multi-section stepped holes - Google Patents
Self-centering tool for multi-section stepped holes Download PDFInfo
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- CN212350415U CN212350415U CN202020855895.8U CN202020855895U CN212350415U CN 212350415 U CN212350415 U CN 212350415U CN 202020855895 U CN202020855895 U CN 202020855895U CN 212350415 U CN212350415 U CN 212350415U
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Abstract
The utility model discloses a multistage step hole self-centering tool, which comprises a main body positioning block, a positioning ring, a pull head, a main pull rod, a positioning taper pin, a first positioning disc, a double-cone expansion sleeve, a second positioning disc, a fixed pin, a contour post and an end face positioning block, wherein the positioning ring is fixed at one end of the main body positioning block, the pull head is fixed inside the other end of the main body positioning block, the pull head is provided with a central hole, and the main pull rod is arranged in the central hole; the positioning taper pin is arranged in the positioning ring through the first positioning disc and is fixed to the end face of the main body positioning block; the double-cone expansion sleeve is sleeved on the positioning taper pin through a second positioning disc; a plurality of concentric positioning holes are formed in the first positioning disc, the second positioning disc and the pull head, the fixing pin penetrates through the positioning holes and is arranged between the positioning discs and the pull head, and the equal-height columns are sleeved on the fixing pin and penetrate through the positioning holes in the first positioning disc; the end face positioning block is fixed to the top end of the positioning taper pin cone. The part that this application can realize two sections different diameters circles is fixed a position simultaneously and is tight to ensure two sections step axialities.
Description
Technical Field
The utility model relates to a frock specifically is multistage step hole self-centering frock.
Background
In the process of grinding and turning thin-wall parts, the parts with different diameters of inner circles need to be positioned and tensioned, and the inner circles with different diameters are respectively tensioned by adopting a common expanding sleeve, so that the efficiency is low, and the coaxiality of multiple sections of steps cannot be ensured.
SUMMERY OF THE UTILITY MODEL
For solving prior art's not enough, this application provides a multistage step hole is from feeling relieved frock, technical scheme as follows: the multi-section stepped hole self-centering tool comprises a main body positioning block, a positioning ring, a pull head, a main pull rod, a positioning taper pin, a first positioning disc, a double-cone expansion sleeve, a second positioning disc, a fixing pin, an equal-height column and an end face positioning block, wherein the positioning ring is fixed to one end of the main body positioning block, the pull head is movably arranged inside the other end of the main body positioning block, the pull head is provided with a central hole, and the main pull rod is fixed into the central hole; the positioning taper pin comprises a first positioning taper pin and a second positioning taper pin, the taper bottom of the first positioning taper pin is arranged in the positioning ring through the first positioning disc and is fixed to the end face of the main body positioning block, and the taper bottom of the second positioning taper pin is fixed to the taper top of the first positioning taper pin; the double-cone expansion sleeve comprises a first expansion sleeve and a second expansion sleeve which are connected together, and the first expansion sleeve and the second expansion sleeve are sleeved on the first positioning taper pin and the second positioning taper pin through the second positioning disc; a plurality of concentric positioning holes are formed in the edge of the first positioning disk, the edge of the second positioning disk, the inner part of the main body positioning block and the edge of the pull head, the fixing pins penetrate through the positioning holes, the number of the fixing pins is consistent with that of the positioning holes, one end of each fixing pin is fixed in the positioning hole of the second positioning disk, the other end of each fixing pin is fixed in the positioning hole of the pull head, and the equal-height columns are sleeved on the fixing pins and penetrate through the positioning holes in the first positioning disk and the inner part of the main body positioning block; the end face positioning block is fixed to the conical top end of the second positioning conical pin and used for positioning the end face of the workpiece.
Furthermore, a plurality of tensioning pieces are uniformly distributed on the first tensioning sleeve and the second tensioning sleeve, and the number of the tensioning pieces on the first tensioning sleeve is smaller than that of the tensioning pieces on the second tensioning sleeve.
Further, the equal-height column is a cylindrical equal-height column, and the diameter of the equal-height column is larger than the diameters of the positioning hole of the second positioning disc and the positioning hole of the pull head.
Furthermore, a plurality of screw holes are seted up along circumference to the holding ring, set up aligning screw in the screw hole, aligning screw's front end with first positioning disk butt is used for right the location aligning of location taper pin guarantees the axiality.
Further, the pull head the main part positioning disk with the holding ring is cylindrical, the pull head with main part locating piece junction sets up O type circle, prevents the infiltration.
Furthermore, an adjusting nut is arranged on the main pull rod and used for locking the main pull rod.
The application has the advantages that: the provided multi-section step hole self-centering tool can realize simultaneous positioning and tensioning of two sections of parts with inner circles of different diameters, and ensures the coaxiality of the two sections of steps.
Drawings
FIG. 1 is a schematic structural view of an embodiment of a multi-section stepped hole self-centering tool according to the present application;
FIG. 2 is an exploded view of the multi-section stepped bore self-centering tooling of FIG. 1;
FIG. 3 is a schematic view of the structure of FIG. 1 from another view angle;
FIG. 4 is a cross-sectional view A-A of FIG. 3;
fig. 5 is a schematic view of the structure of the parts.
Labeled as: 10. the positioning device comprises a main body positioning block, 11, a main pull rod, 111, an adjusting nut, 12, a positioning ring, 121, a self-aligning screw, 13, a double-cone expansion sleeve, 131, a second positioning disc, 132, a first expansion sleeve, 133, a second expansion sleeve, 14, an end face positioning block, 15, a pull head, 16, an O-shaped ring, 17, a positioning taper pin, 171, a first positioning disc, 172, a first positioning taper pin, 173, a second positioning taper pin, 18, an equal-height column, 19, a fixing pin, 20 and parts.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Referring to fig. 1-5, the embodiment provides a multi-section stepped hole self-centering tool, which includes a main body positioning block 10, a positioning ring 12, a slider 15, a main pull rod 11, a positioning taper pin 17, a first positioning disc 171, a double-taper expansion sleeve 13, a second positioning disc 131, a fixing pin 19, an equal-height column 18 and an end face positioning block 14, wherein the positioning ring 12 is fixed to one end of the main body positioning block 10, the slider 15 is movably arranged inside the other end of the main body positioning block 10, the slider 15 is provided with a central hole, the main pull rod 11 is fixed in the central hole, and the main pull rod 11 is provided with an adjusting nut 111; the positioning taper pin 17 comprises a first positioning taper pin 172 and a second positioning taper pin 173, the bottom of the first positioning taper pin 172 is arranged in the positioning ring 12 through a first positioning disc 171 and fixed to the end face of the main body positioning block 10, and the bottom of the second positioning taper pin 173 is fixed to the top of the first positioning taper pin 172; the double-cone expansion sleeve 13 comprises a first expansion sleeve 132 and a second expansion sleeve 133 which are connected together, and the first expansion sleeve 132 and the second expansion sleeve 133 are sleeved on a first positioning taper pin and a second positioning taper pin through a second positioning disc 131; a plurality of concentric positioning holes are formed in the edge of the first positioning disc 171, the edge of the second positioning disc 131, the inner part of the main body positioning block 10 and the edge of the pull head 15 respectively, the fixing pins 19 penetrate through the positioning holes, the number of the fixing pins 19 is equal to that of the positioning holes, one end of each fixing pin is fixed in the corresponding positioning hole of the second positioning disc 131, the other end of each fixing pin is fixed to the corresponding positioning hole of the pull head 15, the equal-height columns 18 are sleeved on the fixing pins 19 and penetrate through the positioning holes in the first positioning disc 171 and the inner part of the main body positioning block 10, the equal-height columns 18 are cylindrical equal-height columns, and; the end face positioning block 14 is fixed to the taper tip of the second positioning taper pin 173 for positioning the end face of the workpiece.
As a preferred embodiment, 4 pieces of expansion sheets are uniformly distributed on the first expansion sleeve 132, 6 pieces of expansion sheets are uniformly distributed on the second expansion sleeve 133, three screw holes are formed in the positioning ring 12 along the circumferential direction, the three screw holes are respectively provided with an aligning screw 121, and the front end of the aligning screw 121 abuts against the first positioning disk 171;
in a preferred embodiment, the slider 15, the body positioning plate 10 and the positioning ring 12 are all cylindrical, and an O-ring 16 is disposed at the connection between the slider 15 and the body positioning plate 10.
During operation, the component 20 is fixed on the double-cone expansion sleeve 13, the component is fixed through the matching of the end face positioning block 14, the adjusting nut 111 is screwed to the end face of the slider 15, the main pull rod 12 and the slider 15 are fixed, the main pull rod 12 is pulled to drive the slider 15, and the double-cone expansion sleeve 13 is tensioned through the arranged equal-height columns 18 under the matching of the first positioning taper pin 172 and the second positioning taper pin 173, so that the component 20 is driven to be tensioned.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.
Claims (7)
1. The utility model provides a multistage step hole is from line-up dress, includes main part locating piece and holding ring, the holding ring is fixed extremely main part locating piece one end, its characterized in that: the multi-section stepped hole self-centering tool further comprises a pull head, a main pull rod, a positioning taper pin, a first positioning disc, a double-cone expansion sleeve, a second positioning disc, a fixing pin, an equal-height column and an end face positioning block, wherein the pull head is movably arranged inside the other end of the main positioning block, the pull head is provided with a central hole, and the main pull rod is fixed into the central hole; the positioning taper pin comprises a first positioning taper pin and a second positioning taper pin, the taper bottom of the first positioning taper pin is arranged in the positioning ring through the first positioning disc and is fixed to the end face of the main body positioning block, and the taper bottom of the second positioning taper pin is fixed to the taper top of the first positioning taper pin; the double-cone expansion sleeve comprises a first expansion sleeve and a second expansion sleeve which are connected together, and the first expansion sleeve and the second expansion sleeve are sleeved on the first positioning taper pin and the second positioning taper pin through the second positioning disc; a plurality of concentric positioning holes are formed in the edge of the first positioning disk, the edge of the second positioning disk, the inner part of the main body positioning block and the edge of the pull head, the fixing pins penetrate through the positioning holes, the number of the fixing pins is consistent with that of the positioning holes, one end of each fixing pin is fixed in the positioning hole of the second positioning disk, the other end of each fixing pin is fixed in the positioning hole of the pull head, and the equal-height columns are sleeved on the fixing pins and penetrate through the positioning holes in the first positioning disk and the inner part of the main body positioning block; the end face positioning block is fixed to the conical top end of the second positioning conical pin and used for positioning the end face of the workpiece.
2. The multi-segment stepped hole self-centering tool according to claim 1, characterized in that: the first expansion sleeve and the second expansion sleeve are uniformly provided with a plurality of expansion pieces, and the number of the expansion pieces on the first expansion sleeve is smaller than that of the expansion pieces on the second expansion sleeve.
3. The multi-segment stepped hole self-centering tool according to claim 1, characterized in that: the equal-height column is a cylindrical equal-height column, and the diameter of the equal-height column is larger than the diameters of the positioning hole of the second positioning disc and the positioning hole of the pull head.
4. The multi-segment stepped hole self-centering tool according to claim 1, characterized in that: a plurality of screw holes are arranged in the positioning ring along the circumferential direction, aligning screws are arranged in the screw holes, and the front ends of the aligning screws are abutted to the first positioning disc and used for aligning the positioning cone pins.
5. The multi-segment stepped hole self-centering tool according to claim 1, characterized in that: the pull head, the main body positioning disc and the positioning ring are all cylindrical.
6. The multi-segment stepped hole self-centering tool according to claim 5, characterized in that: and an O-shaped ring is arranged at the joint of the pull head and the main body positioning block.
7. The multi-segment stepped hole self-centering tool according to claim 1, characterized in that: and the main pull rod is provided with an adjusting nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020855895.8U CN212350415U (en) | 2020-05-20 | 2020-05-20 | Self-centering tool for multi-section stepped holes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020855895.8U CN212350415U (en) | 2020-05-20 | 2020-05-20 | Self-centering tool for multi-section stepped holes |
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| Publication Number | Publication Date |
|---|---|
| CN212350415U true CN212350415U (en) | 2021-01-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020855895.8U Active CN212350415U (en) | 2020-05-20 | 2020-05-20 | Self-centering tool for multi-section stepped holes |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114833599A (en) * | 2022-03-30 | 2022-08-02 | 西安航天精密机电研究所 | Machining tool and machining method for electromechanical gyro frame assembly |
-
2020
- 2020-05-20 CN CN202020855895.8U patent/CN212350415U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114833599A (en) * | 2022-03-30 | 2022-08-02 | 西安航天精密机电研究所 | Machining tool and machining method for electromechanical gyro frame assembly |
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