CN110935901A - Three round pin shaft yoke secondary positioning child devices that rise - Google Patents
Three round pin shaft yoke secondary positioning child devices that rise Download PDFInfo
- Publication number
- CN110935901A CN110935901A CN201811105023.3A CN201811105023A CN110935901A CN 110935901 A CN110935901 A CN 110935901A CN 201811105023 A CN201811105023 A CN 201811105023A CN 110935901 A CN110935901 A CN 110935901A
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- CN
- China
- Prior art keywords
- tire
- outer sleeve
- inclined block
- mandrel
- pin shaft
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B31/00—Chucks; Expansion mandrels; Adaptations thereof for remote control
- B23B31/40—Expansion mandrels
Abstract
The invention discloses a secondary positioning tire-expanding device for a three-pin shaft fork, which sequentially comprises a tire-expanding body and an outer sleeve from left to right, wherein a mandrel penetrates through the axial middle parts of the tire-expanding body and the outer sleeve in a sliding manner, the tire-expanding body is connected with a main shaft of driving equipment, the mandrel is connected with a cylinder of the driving equipment, a compression spring, a first inclined block and a second inclined block are sequentially sleeved on the mandrel from left to right, inclined planes which are gradually reduced from left to right are respectively arranged at the top parts of the first inclined block and the second inclined block, a tension block is vertically inserted in the outer sleeve, the bottom shape of the tension block is matched with the inclined planes and is in sliding abutting contact, an inner cavity of a blank part of the three-pin shaft fork is sleeved at the right end of the outer sleeve from right to left, and a center hole of the right. The invention has reasonable structural design, can eliminate the conditions of manual feeding error and incapability of being close to a positioning pin when the feeding is not in place through axial secondary positioning and the action of the machine tool numerical control program control, and greatly improves the part processing precision.
Description
Technical Field
The invention relates to a tire expanding device for automobile parts, in particular to a three-pin shaft fork secondary positioning tire expanding device.
Background
In the current market, a three-pin shaft fork in an automobile part is usually positioned by adopting a tire expanding device to expand an inner cavity of a part during processing and production and utilizing a positioning pin at the front end of an expanding tire to tightly push against the bottom of the inner cavity of the part. However, because manual feeding is adopted during clamping and positioning, often, when an operator manually feeds and expands the tire to clamp, the axial feeding is not in place and cannot be close to the positioning pin, and the condition that the machining precision of parts is affected due to the fact that the feeding is not in place often occurs.
In summary, there is a need for a three-pin shaft fork tire expanding device with reasonable structural design and accurate axial positioning.
Disclosure of Invention
The invention aims to solve the technical problem that the axial positioning of the existing three-pin shaft fork tire expanding device is inaccurate, and the machining precision is influenced.
In order to solve the technical problem, the invention adopts the technical scheme that a three-pin shaft fork secondary positioning tire expanding device is provided, which comprises a tire expanding body and an outer sleeve from left to right in sequence, wherein the tire expanding body and the outer sleeve are coaxially arranged, a mandrel penetrates through the axial middle parts of the tire expanding body and the outer sleeve in a sliding manner, the tire expanding body is connected with a main shaft of driving equipment, the mandrel is connected with a cylinder of the driving equipment, a circle of annular flange is arranged on the outer peripheral surface of the mandrel in a protruding manner, the annular flange is arranged in the tire expanding body in a horizontal sliding manner, the end surface of the annular flange is arranged in parallel with the end surface of the outer sleeve relatively, three guide pins penetrate vertically between the end surface of the annular flange and the end surface of the outer sleeve, the three guide pins are uniformly distributed along the circumference of the mandrel, the guide pins are parallel to the mandrel, and two ends of the guide pins penetrate through the end surface of the annular flange and the end surface of the outer sleeve, the mandrel penetrates through the large-diameter part and the small-diameter part which are sequentially in two-stage axial shape from left to right, a compression spring, a first inclined block and a second inclined block are sequentially sleeved on the small-diameter part from left to right in a sliding manner, two ends of the compression spring are respectively abutted against the end face of the large-diameter part and the end face of the first inclined block, a first connecting bolt axially penetrates through the right end face of the mandrel, the first connecting bolt sequentially penetrates through the second inclined block and the first inclined block from left to left, the outer edge of the right end of the first connecting bolt is abutted against the right end face of the second inclined block and limits the second inclined block to slide along the mandrel, inclined faces gradually reduced from left to right are respectively arranged at the tops of the first inclined block and the second inclined block, and two notches are respectively vertically arranged on the jacket corresponding to the inclined faces, the novel three-pin shaft fork blank part is characterized in that a tension block is vertically inserted into the gap, the top of the tension block is exposed out of the gap, the bottom of the tension block is matched with the inclined plane and is in sliding abutting contact with the inclined plane, a protecting cover is fixedly arranged on the right end face of the outer sleeve in a matched mode, three positioning pins are uniformly and protrudingly fixed on the outer end face of the protecting cover in the circumferential direction, an inner cavity of the three-pin shaft fork blank part is sleeved on the right end of the outer sleeve from the right to the left of the outer side of the protecting cover, and a center hole of the right end face of the three.
In the above scheme, the bottoms of the two tensioning blocks are inclined planes respectively matched with the first inclined block and the second inclined block, and the first inclined block and the second inclined block have the same inclination.
In the scheme, three second connecting bolts are vertically arranged on the mutual abutting surfaces of the tire expanding body and the outer sleeve in a penetrating mode and are evenly distributed along the circumference of the tire expanding body, the second connecting bolts are axially parallel to the tire expanding body, and two ends of each second connecting bolt are fixedly arranged in the mutual abutting surfaces of the tire expanding body and the outer sleeve in a penetrating mode.
In the scheme, the driving device and the center are respectively externally connected with a machine tool and controlled to act through a numerical control program of the machine tool.
In the above aspect, the space in which the annular flange is built in the tire expander body has a certain horizontal sliding length, and the left end face of the annular flange faces the inner wall of the tire expander body.
The invention has reasonable structural design, can eliminate the conditions of manual feeding error and incapability of being close to a positioning pin when the feeding is not in place through axial secondary positioning and the action of the machine tool numerical control program control, and greatly improves the part processing precision.
Drawings
FIG. 1 is a schematic view of the overall structural assembly of the present invention;
FIG. 2 is a schematic view of the unassembled triple pin yoke blank part of FIG. 1;
FIG. 3 is a right side view of FIG. 2;
fig. 4 is a schematic view of a blank part of the three-pin yoke of fig. 1.
Detailed Description
The invention is described in detail below with reference to the accompanying drawings.
The invention discloses a three-pin shaft fork secondary positioning tire expanding device, which can be realized by properly improving process parameters by referring to the contents in the field. It is expressly intended that all such alterations and modifications which are obvious to those skilled in the art are deemed to be incorporated herein by reference, and that the techniques of the invention may be practiced and applied by those skilled in the art without departing from the spirit, scope and range of equivalents of the invention.
In the present invention, unless otherwise defined, scientific and technical terms used herein have the meanings that are commonly understood by those skilled in the art.
As shown in fig. 1 to 4, the three-pin shaft fork secondary positioning tire expansion device provided by the invention comprises a tire expansion body 1 and an outer sleeve 4 sequentially from left to right, the tire expansion body 1 and the outer sleeve 4 are coaxially arranged, three second connecting bolts 12 vertically penetrate through the abutting surfaces of the tire expansion body 1 and the outer sleeve 4, the three second connecting bolts 12 are uniformly distributed along the circumference of the tire expansion body 1 so as to enable the connection stress to be uniform, the second connecting bolts 12 are axially parallel to the tire expansion body 1, and two ends of each second connecting bolt 12 are respectively fixedly penetrated through the abutting surfaces of the tire expansion body 1 and the outer sleeve 4 so as to enable the tire expansion body 1 and the outer sleeve 4 to be fixedly connected.
The axial middle parts of the tire expanding body 1 and the outer sleeve 4 are internally provided with a mandrel 2 in a sliding and penetrating mode, the peripheral surface of the mandrel 2 is convexly provided with a circle of annular flange, the annular flange is internally arranged in the tire expanding body 1 and can horizontally slide for a certain distance, namely, the space internally arranged in the tire expanding body 1 in the annular flange has a certain horizontal sliding stroke so as to be convenient for matching with the clamping or loosening step of the tire expanding working process, the left end face of the annular flange faces the inner wall of the tire expanding body 1, and the end face of the annular flange and the end face of the outer sleeve 4 are arranged in parallel relatively to ensure that parallel faces are contacted.
Three guide pins 3 vertically penetrate through the end face of the annular flange and the end face of the outer sleeve 4, the three guide pins 3 are uniformly distributed along the circumference of the mandrel 2, the guide pins 3 are parallel to the mandrel 2, two ends of the guide pins 3 are respectively penetrated through the end face of the annular flange and the end face of the outer sleeve 4 in a sliding mode, and the mandrel 2 is used for guiding through the guide pins 3 so as to eliminate equipment errors.
The part that dabber 2 wore to locate in overcoat 4 is two-stage axial major diameter portion and minor diameter portion from left to right in proper order, and the cover that slides in proper order from left to right on the minor diameter portion is equipped with compression spring 5, first sloping block 6 and second sloping block 7, and compression spring 5's both ends are supported respectively elastically and are leaned on the right-hand member face of major diameter portion and the left end face of first sloping block 6 to make first sloping block 6 and second sloping block 7 can follow dabber 2 elastic sliding when equipment drives.
A first connecting bolt 8 is axially arranged on the right end face of the mandrel 2 in a penetrating mode, the first connecting bolt 8 is arranged in the second sloping block 7 and the first sloping block 6 in a penetrating mode leftwards, and therefore the right end outer edge of the first connecting bolt 8 and the right end face of the second sloping block 7 are abutted to limit the second sloping block 7 to slide along the mandrel 2.
The tops of the first inclined block 6 and the second inclined block 7 are respectively provided with inclined planes which gradually decrease from left to right, and the inclinations of the first inclined block 6 and the second inclined block 7 are the same. Two gaps are respectively and vertically formed in the outer sleeve 4 corresponding to the inclined planes, the tensioning blocks 11 are vertically inserted in the gaps, the tops of the tensioning blocks 11 are exposed out of the gaps and used for tensioning inner cavities of the three-pin shaft fork blank parts 13, the bottoms of the two tensioning blocks 11 are inclined planes respectively matched with the first inclined blocks 6 and the second inclined blocks 7 and are in sliding abutting contact, so that the tensioning blocks 11 can vertically extend and retract when the outer sleeve is driven, and the protecting covers 9 playing a role in protection are fixedly arranged on the right end face of the outer sleeve 4 in a matched mode.
The outer end face of the protecting cover 9 is uniformly fixed with three positioning pins 10 in a protruding mode along the circumferential direction, and the three positioning pins 10 are used for jacking the bottom of an inner cavity of a three-pin shaft fork blank part 13 to enable the three-pin shaft fork blank part to be effectively positioned. The inner cavity of the three-pin shaft fork blank part 13 is sleeved at the right end of the outer sleeve 4 from right to left from the outer side of the protecting cover 9, the center hole of the right end face of the three-pin shaft fork blank part 13 is horizontally abutted against the tip 14, the expanding tire body 1 is connected with a main shaft of driving equipment, the mandrel 2 is connected with a cylinder of the driving equipment, and the driving equipment and the tip 14 are respectively externally connected with a machine tool and controlled to act through a numerical control program of the machine tool.
The basic working flow of the device is that when the device works, the cylinder retracts to drive the mandrel 2 to retract, so that the compression spring 5 is loosened, and then the first inclined block 6 and the second inclined block 7 move leftwards, so that the tensioning block 11 is loosened. When the inner cavity of the three-pin shaft fork blank part 13 is inserted into the expansion tire clamping position, the bottom of the inner cavity of the three-pin shaft fork blank part is tightly leaned against the positioning pin 10 to achieve axial positioning, then the air cylinder acts to push the mandrel 2 rightwards, the compression spring 5 is compressed to tightly push the first inclined block 6 and the second inclined block 7, and therefore the tension block 11 moves upwards to tightly push the inner wall of the inner cavity of the part 13, and radial positioning and clamping effects are achieved.
The invention has the innovation points that when the three-pin shaft fork blank part is used, an inner cavity of the three-pin shaft fork blank part 13 is inserted into a tire expanding tensioning part for clamping, the accuracy of axial positioning is not considered at this time, then a center 14 is used for tightly jacking a center hole of the right end face of the three-pin shaft fork blank part 13, then a tire expanding clamping device is loosened, the center 14 is continuously propped tightly to enable the three-pin shaft fork blank part 13 to have a tendency of moving leftwards, if the positioning pin 10 does not prop tightly the inner cavity of the three-pin shaft fork blank part 13, the positioning pin 10 can be tightly contacted with the inner cavity of the three-pin shaft fork blank part 13 through the center 14, the purpose of secondary accurate axial positioning is achieved, and then the tensioning block 11 is tightened again to achieve the effect of.
The invention has reasonable structural design, can eliminate the conditions of manual feeding error and incapability of being close to a positioning pin when the feeding is not in place through axial secondary positioning and the action of the machine tool numerical control program control, and greatly improves the part processing precision.
The present invention is not limited to the above-mentioned preferred embodiments, and any structural changes made under the teaching of the present invention shall fall within the protection scope of the present invention, which has the same or similar technical solutions as the present invention.
Claims (5)
1. The tire expanding device with the three-pin shaft fork for secondary positioning is characterized by comprising a tire expanding body and an outer sleeve which are coaxially arranged, wherein a mandrel penetrates through the axial middle parts of the tire expanding body and the outer sleeve in a sliding manner, the tire expanding body is connected with a main shaft of driving equipment, the mandrel is connected with a cylinder of the driving equipment, a circle of annular flange is arranged on the outer peripheral surface of the mandrel in a protruding manner, the annular flange is arranged in the tire expanding body in a horizontally sliding manner, the end surface of the annular flange is arranged in parallel with the end surface of the outer sleeve relatively, three guide pins penetrate through the end surface of the annular flange and the end surface of the outer sleeve vertically, the three guide pins are uniformly distributed along the circumference of the mandrel, the guide pins are parallel to the mandrel, and the two ends of the guide pins penetrate through the end surface of the annular flange and the end surface of the outer sleeve in a sliding manner respectively, the mandrel penetrates through the large-diameter part and the small-diameter part which are sequentially in two-stage axial shape from left to right, a compression spring, a first inclined block and a second inclined block are sequentially sleeved on the small-diameter part from left to right in a sliding manner, two ends of the compression spring are respectively abutted against the end face of the large-diameter part and the end face of the first inclined block, a first connecting bolt axially penetrates through the right end face of the mandrel, the first connecting bolt sequentially penetrates through the second inclined block and the first inclined block from left to left, the outer edge of the right end of the first connecting bolt is abutted against the right end face of the second inclined block and limits the second inclined block to slide along the mandrel, inclined faces gradually reduced from left to right are respectively arranged at the tops of the first inclined block and the second inclined block, and two notches are respectively vertically arranged on the jacket corresponding to the inclined faces, the novel three-pin shaft fork blank part is characterized in that a tension block is vertically inserted into the gap, the top of the tension block is exposed out of the gap, the bottom of the tension block is matched with the inclined plane and is in sliding abutting contact with the inclined plane, a protecting cover is fixedly arranged on the right end face of the outer sleeve in a matched mode, three positioning pins are uniformly and protrudingly fixed on the outer end face of the protecting cover in the circumferential direction, an inner cavity of the three-pin shaft fork blank part is sleeved on the right end of the outer sleeve from the right to the left of the outer side of the protecting cover, and a center hole of the right end face of the three.
2. The secondary positioning tire-expanding device for the three-pin shaft fork as claimed in claim 1, wherein the bottoms of the two expanding blocks are inclined planes respectively matched with the first inclined block and the second inclined block, and the inclination of the first inclined block and the inclination of the second inclined block are the same.
3. The secondary positioning tire expanding device with the three-pin shaft fork as claimed in claim 1, wherein three second connecting bolts vertically penetrate through the abutting surfaces of the tire expanding body and the outer sleeve, the three second connecting bolts are uniformly distributed along the circumference of the tire expanding body, the second connecting bolts are parallel to the axial direction of the tire expanding body, and two ends of each second connecting bolt are respectively and fixedly arranged in the abutting surfaces of the tire expanding body and the outer sleeve.
4. The device for secondarily positioning and expanding the tire of the three-pin shaft fork as recited in claim 1, wherein the driving device and the tip are respectively externally connected with a machine tool and controlled to operate through a numerical control program of the machine tool.
5. The secondary positioning tire expanding device with three pin shaft forks as claimed in claim 1, wherein the space where the annular flange is arranged in the tire expanding body has a certain horizontal sliding length, and the left end face of the annular flange faces the inner wall of the tire expanding body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811105023.3A CN110935901A (en) | 2018-09-21 | 2018-09-21 | Three round pin shaft yoke secondary positioning child devices that rise |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811105023.3A CN110935901A (en) | 2018-09-21 | 2018-09-21 | Three round pin shaft yoke secondary positioning child devices that rise |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110935901A true CN110935901A (en) | 2020-03-31 |
Family
ID=69905589
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811105023.3A Pending CN110935901A (en) | 2018-09-21 | 2018-09-21 | Three round pin shaft yoke secondary positioning child devices that rise |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110935901A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113247615A (en) * | 2021-05-31 | 2021-08-13 | 慕贝尔汽车部件（太仓）有限公司 | Assembly system for spring clamp |
| CN113275871A (en) * | 2021-05-11 | 2021-08-20 | 慕贝尔汽车部件（太仓）有限公司 | Spring clamp assembling device |
-
2018
- 2018-09-21 CN CN201811105023.3A patent/CN110935901A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113275871A (en) * | 2021-05-11 | 2021-08-20 | 慕贝尔汽车部件（太仓）有限公司 | Spring clamp assembling device |
| CN113275871B (en) * | 2021-05-11 | 2023-03-07 | 慕贝尔汽车部件（太仓）有限公司 | Spring clamp assembling device |
| CN113247615A (en) * | 2021-05-31 | 2021-08-13 | 慕贝尔汽车部件（太仓）有限公司 | Assembly system for spring clamp |
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