CN211072761U - Positioning tool - Google Patents
Positioning tool Download PDFInfo
- Publication number
- CN211072761U CN211072761U CN201921627034.8U CN201921627034U CN211072761U CN 211072761 U CN211072761 U CN 211072761U CN 201921627034 U CN201921627034 U CN 201921627034U CN 211072761 U CN211072761 U CN 211072761U
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- China
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- positioning
- push rod
- mandrel body
- pressing sleeve
- guide post
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Abstract
The utility model relates to a positioning tool, which comprises a mandrel body, a positioning pin, a push rod, a force transmission spring, a hollow nut, a pressing sleeve, a stud, a pressing plate, a guide post and a spring I; one end of the push rod is provided with an inclined plane; the pressing sleeve is provided with a chute at the position corresponding to the push rod; a plurality of positioning step holes are uniformly distributed on the upper part of the mandrel body along the circumference; the positioning pin, the push rod and the force transmission spring are sequentially arranged in the positioning step hole of the mandrel body, and the hollow nut is screwed into the corresponding positioning hole of the mandrel body 1 to limit the push rod; the guide post is arranged in the central through hole of the mandrel body from the bottom and is fixed; the stud is fixed on the top of the guide post; the utility model discloses reduced fixed dimension positioning element's radial positioning error, can enlarge its application range to the hole of part or the accurate radial positioning of excircle, reduced the frock cost.
Description
Technical Field
The utility model belongs to the machining field, concretely relates to location frock.
Background
In the process of processing the part, when the hole or the excircle of part need be carried out radial positioning, can adopt fixed dimension positioning element to fix a position usually, adopt the fixed dimension mandrel when carrying out radial positioning to the hole, adopt the fixed dimension position sleeve when fixing a position the excircle.
When the fixed-size positioning element is used for positioning an inner hole or an excircle of a part, the radial positioning error of the part is larger due to the existence of the dimensional tolerance of the positioning part of the part and the dimensional manufacturing tolerance of the positioning element and the existence of the minimum fit clearance which must be reserved for ensuring the normal assembly and disassembly of the part. When the positioning precision can not meet the processing requirement, only a gapless expanding type positioning mode can be adopted, the production specialty of the gapless expanding type positioning tool is strong, and only a professional manufacturer can produce the gapless expanding type positioning tool, so that the cost of the gapless expanding type positioning tool is relatively high, and the order period of the tool is long.
SUMMERY OF THE UTILITY MODEL
The utility model provides a location frock, the technical problem who solves is: the radial positioning error of the inner hole of the part is large.
In order to solve the technical problem, the utility model provides a location frock, its characterized in that: the device comprises a mandrel body 1, a positioning pin 3, a push rod 4, a force transmission spring 5, a hollow nut 6, a pressing sleeve 7, a double-end stud 8, a pressing plate 10, a guide post 11 and a spring I12; one end of the push rod 4 is provided with an inclined plane; the pressing sleeve 7 is provided with a chute at the position corresponding to the positioning hole; a plurality of positioning step holes are uniformly distributed on the upper part of the mandrel body along the circumference; the positioning pin 3, the push rod 4 and the force transmission spring 5 are sequentially arranged in a positioning step hole of the mandrel body 1, and the hollow nut 6 is screwed into a corresponding positioning hole of the mandrel body 1 to limit the push rod 4; the guide post 11 is arranged in the central through hole of the mandrel body 1 from the bottom and is fixed; the stud 8 is fixed on the top of the guide post 11; the spring I12 and the pressing sleeve 7 are sequentially sleeved on the excircle of the guide post 11, and the inclined plane on the push rod 4 is arranged in the inclined groove corresponding to the pressing sleeve 7; the pressing plate 10 is in threaded connection with the upper end of the stud 8.
Has the advantages that: the utility model discloses increase three locating pins at the spindle body, can conveniently realize the accurate control of the size of locating pin head protrusion spindle body through adjustment pad size. The positioning pin is pushed by the force transmission spring, so that the structure has no special requirement on the machining precision of the pressing sleeve chute and the push rod matching inclined plane. In order to reduce the resistance of the positioning pin for pushing the parts, three floating support steel balls are arranged on the positioning end surface of the mandrel body. The utility model discloses reduced fixed dimension positioning element's radial positioning error, can enlarge its application range to the hole of part or the accurate radial positioning of excircle, reduced the frock cost.
Drawings
Fig. 1 is a schematic structural view of the present invention for positioning the inner hole.
Fig. 2 is a plan view of the present invention.
Fig. 3 is a schematic view of a guide pin.
Fig. 4 is a schematic view of a push rod.
Detailed Description
In order to make the objects, contents and advantages of the present invention clearer, the following description will be made in further detail with respect to the embodiments of the present invention.
The utility model provides a positioning tool, including spindle body 1, adjusting pad 2, locating pin 3, push rod 4, power transmission spring 5, hollow nut 6, pressure sleeve 7, stud 8, nut 9, clamp plate 10, guide post 11, spring I12, screw 13, steel ball 14, spring II15, plug screw 16;
sequentially installing the steel ball 14 and the spring II15 into corresponding holes of a spindle body positioning table of the piece 1, and screwing the screw plug 16 into the corresponding threaded hole of the spindle body of the piece 1 to limit the spring I I15;
3 positioning step holes are uniformly distributed on the upper part of the mandrel body along the circumference; one end of the push rod 4 is provided with an inclined plane; the pressing sleeve 7 is provided with a chute at the position corresponding to the positioning hole;
the adjusting pad 2, the positioning pin 3, the push rod 4 and the force transmission spring 5 are sequentially arranged in each positioning step hole of the mandrel body 1, and the hollow nut 6 is screwed into the corresponding positioning hole of the mandrel body 1 to limit the push rod 4; the guide post 11 is arranged in a central through hole of the mandrel body 1 from the bottom and is fixed by a screw 13; the stud 8 is screwed into a threaded hole at the top of the guide post 11; the spring I12 and the pressing sleeve 7 are sequentially sleeved on the excircle of the guide post 11, and the inclined plane on the push rod 4 is arranged in the inclined groove corresponding to the pressing sleeve 7; and a pressure plate 10 is arranged at the upper end of the stud 8, and a nut 9 is screwed at the end part of the stud of the member 8 to limit the pressure plate.
The utility model discloses a theory of operation and working process as follows:
sleeving a workpiece on the mandrel body 1, rotating the nut 9, and pushing the pressing sleeve 7 to move downwards by the nut 9 through the pressing plate 10; when pressing cover 7 downstream, the chute on the pressure cover promotes the push rod to radial motion through the inclined plane on the complex push rod 4 with it, and the push rod makes locating pin 3 fix a position on the step face of spindle body 1 through adjusting pad 2 through passing power spring 5, makes the protruding spindle body 1's of locating pin head size be: the difference between the minimum value of the positioning diameter size of the workpiece and the actual diameter size of the mandrel body 1 is one half; according to the structure, the size of the adjusting pad can be adjusted conveniently, so that the size of the head part of the positioning pin protrudes out of the mandrel body 1 can be accurately controlled, the push rod pushes the positioning pin through the force transmission spring, and the structure has no special requirements on the machining precision of the pressing sleeve chute and the push rod matching inclined plane. After the structure is adopted, the radial positioning error is equivalent to the positioning error of adopting the size of the positioning mandrel as the minimum size of the positioning hole of the part, and the convenience in assembling and disassembling the part can be ensured.
And when the positioning pin 3 moves in the radial direction, the part is pushed to realize the radial positioning of the part. In order to reduce the resistance of the positioning pin for pushing the parts, three floating support steel balls 14 are arranged on the positioning end surface of the mandrel body 1.
After the radial positioning of the part is realized, the nut 9 is continuously rotated, the pressing plate 10 compresses the part, the steel ball 14 retracts into the hole of the mandrel body 1 under the action of pressure, the end face of the part is attached to the positioning end face of the mandrel body, and the clamping of the part is realized.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be considered as the protection scope of the present invention.
Claims (6)
1. The utility model provides a location frock which characterized in that: the device comprises a mandrel body, a positioning pin, a push rod, a force transmission spring, a hollow nut, a pressing sleeve, a double-end stud, a pressing plate, a guide post and a spring I; one end of the push rod is provided with an inclined plane; the pressing sleeve is provided with a chute at the position corresponding to the push rod; a plurality of positioning step holes are uniformly distributed on the upper part of the mandrel body along the circumference; the positioning pin, the push rod and the force transmission spring are sequentially arranged in the positioning step hole of the mandrel body, and the hollow nut is screwed into the corresponding positioning hole of the mandrel body 1 to limit the push rod; the guide post is arranged in the central through hole of the mandrel body from the bottom and is fixed; the stud is fixed on the top of the guide post; the spring I and the pressing sleeve are sequentially sleeved on the excircle of the guide post, and the inclined plane on the push rod is arranged in the corresponding inclined groove of the pressing sleeve; the pressing plate is in threaded connection with the upper end of the stud.
2. The positioning tool according to claim 1, characterized in that: a plurality of groups of floating steel balls are uniformly distributed on the positioning end surface at the lower part of the mandrel body.
3. The positioning tool according to claim 1, characterized in that: the size of the head part of the positioning pin protruding out of the mandrel body 1 is one half of the difference between the minimum value of the positioning diameter of the workpiece and the actual size of the diameter of the mandrel body.
4. The positioning tool according to claim 3, characterized in that: the head part of the positioning pin is provided with an adjusting pad.
5. The positioning tool according to claim 2, characterized in that: the floating steel ball comprises a steel ball 14 and a spring II15, and the steel ball is in contact with the lower end face of the workpiece.
6. The positioning tool according to claim 2, characterized in that: when the pressing sleeve moves downwards, the chute on the pressing sleeve pushes the push rod to move radially through the inclined plane on the push rod matched with the chute.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921627034.8U CN211072761U (en) | 2019-09-27 | 2019-09-27 | Positioning tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921627034.8U CN211072761U (en) | 2019-09-27 | 2019-09-27 | Positioning tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211072761U true CN211072761U (en) | 2020-07-24 |
Family
ID=71633167
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921627034.8U Active CN211072761U (en) | 2019-09-27 | 2019-09-27 | Positioning tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211072761U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113714905A (en) * | 2021-09-03 | 2021-11-30 | 安徽永茂泰铝业有限公司 | Environment-friendly polishing equipment for automobile casting and polishing method thereof |
-
2019
- 2019-09-27 CN CN201921627034.8U patent/CN211072761U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113714905A (en) * | 2021-09-03 | 2021-11-30 | 安徽永茂泰铝业有限公司 | Environment-friendly polishing equipment for automobile casting and polishing method thereof |
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