CN212044315U - Positioning device for interference assembly of shell and inner barrel - Google Patents
Positioning device for interference assembly of shell and inner barrel Download PDFInfo
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- CN212044315U CN212044315U CN202020050056.9U CN202020050056U CN212044315U CN 212044315 U CN212044315 U CN 212044315U CN 202020050056 U CN202020050056 U CN 202020050056U CN 212044315 U CN212044315 U CN 212044315U
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Abstract
The utility model provides a positioner for shell and inner tube interference fit, includes base, deflector, the fixed three support post that sets up on the base, three support post is the semicircle distribution, wherein is equipped with the support horizontal pole between the support post of both sides and the support post in the middle of respectively, and leaves the opening that supplies the shell to pass through between the support post of both sides, the upper end and the deflector fixed connection of three support post, be equipped with a location boss on the base, be equipped with open-ended positioning groove on the boss of location for place the shell, this positioning groove's open end extends to the edge of location boss, be equipped with the guiding hole on the deflector for insert the inner tube, guiding hole and positioning groove are on same axis. The utility model discloses an assembly is simple, the location is reliable, has improved workman's work efficiency.
Description
Technical Field
The utility model relates to an interference fit's assembly technical field, in particular to a positioner that is used for shell and inner tube interference fit.
Background
In machine manufacturing, there are many occasions where a large interference fit is required, for example, the inner cylinder is in an interference fit in the outer shell, and the assembly completeness of the interference fit plays a crucial role in product quality. Before the assembly, need carry out heat treatment to the shell usually, perhaps carry out cooling treatment to the inner tube, during the assembly, need aim at the hole of shell with the inner tube earlier, make its pressure equipment advance the shell to the inner tube application of force again, in the assembling process, if the position of shell or inner tube takes place the skew, just need adjust its position, cause the condition that inner tube and shell kick-backed because of cold and hot meeting emergence volume very easily when adjusting the position, in case the emergence volume kick-backs and just causes the unable press fit of inner tube into the shell easily, consequently, must accomplish the assembly of inner tube and shell fast, just can avoid inner tube and shell to kick-back because of the magnitude of emergence and lead to unable completion assembly. Therefore, a positioning device is needed in the assembly process, so that the inner cylinder is always aligned with the inner hole of the shell, and the inner cylinder and the shell are prevented from deflecting.
Disclosure of Invention
The utility model aims at prior art not enough, provide a positioner that is used for shell and inner tube interference fit, its assembly is simple, the location is reliable, can improve workman's assembly efficiency.
The technical scheme of the invention is as follows: the utility model provides a positioner for shell and inner tube interference fit, includes base, deflector, the fixed three support post that sets up on the base, three support post is the semicircle distribution, wherein is equipped with the support horizontal pole between the support post of both sides and the support post in the middle of respectively, and leaves the opening that supplies the shell to pass through between the support post of both sides, the upper end and the deflector fixed connection of three support post, be equipped with a location boss on the base, be equipped with open-ended positioning groove on the boss of location for place the shell, this positioning groove's open end extends to the edge of location boss, be equipped with the guiding hole on the deflector for insert the inner tube, guiding hole and positioning groove are on same axis.
Two groups of supporting cross rods are arranged between the supporting upright columns on the two sides and the supporting upright column in the middle.
The support cross rod is arc-shaped, and the radius of the arc-shaped support cross rod is larger than that of the shell.
The bottom of the positioning groove is provided with a stepped hole, the diameter of a large-diameter hole of the stepped hole is larger than the outer diameter of the inner cylinder, the diameter of a small-diameter hole of the stepped hole is smaller than the outer diameter of the inner cylinder, and the stepped hole, the positioning groove and the guide hole are on the same axis.
Adopt above-mentioned technical scheme: three supporting columns are fixedly arranged on the base, the upper ends of the three supporting columns are fixedly connected with the guide plate, and the base and the guide plate are connected through the supporting columns. The positioning boss on the base is provided with an open positioning groove, and the positioning groove is used for placing the shell and plays a positioning role on the shell. Because positioning groove's open end extends to the edge of location boss, and three support post is semicircle distribution, wherein is equipped with the support horizontal pole between the support post of both sides and the support post in the middle of respectively to reserve the opening that supplies the shell to pass through between the support post of both sides, when placing the shell, only need with the shell from positioning groove's opening push away to positioning groove in can, easy operation, convenient to use. The guide plate is provided with the guide hole, during assembly, the inner barrel is pressed into the shell through the guide hole, the inner barrel can be prevented from deflecting under the guide effect of the guide hole, the inner barrel is always aligned with the inner hole of the shell, and the guide hole and the positioning groove are on the same axis, so that the alignment of the inner barrel and the inner hole of the shell can be further ensured. The positioning device can well position the shell after heat treatment and the inner cylinder after cold treatment, so that the inner cylinder is quickly and completely pressed into the inner hole of the shell, and after the shell and the inner cylinder recover to normal temperature, interference fit is formed, and assembly is completed. Therefore, the positioning device is simple in structure and reliable in positioning, the rejection rate caused by press fitting failure can be reduced, and the assembly efficiency of workers is greatly improved.
Two groups of supporting cross rods are arranged between the supporting upright columns on the two sides and the supporting upright column in the middle, and the supporting upright columns are pulled through the two groups of supporting cross rods, so that the supporting reliability of the supporting upright columns is ensured.
The support cross rod is arc-shaped, the radius of the arc-shaped support cross rod is larger than that of the shell, the support cross rod is arc-shaped, a larger space can be reserved between the three support upright posts to accommodate the shell with a larger diameter, and the radius of the arc-shaped support cross rod which is larger than that of the shell can avoid the interference of the support cross rod on the placement of the shell.
The bottom of the positioning groove is provided with a stepped hole, the diameter of a large-diameter hole of the stepped hole is larger than the outer diameter of the inner cylinder, the diameter of a small-diameter hole of the stepped hole is smaller than the outer diameter of the inner cylinder, and the stepped hole, the positioning groove and the guide hole are on the same axis. The diameter of the large-diameter hole provided with the stepped hole is larger than that of the inner barrel, a certain distance can be reserved for pressing the inner barrel into the shell, the inner barrel is prevented from being impacted with the bottom of the positioning groove after being pressed into the shell, the inner barrel is prevented from being damaged, the diameter of the small-diameter hole is smaller than that of the inner barrel, the inner barrel can be prevented from falling off from the stepped hole, and steam and water generated by cold-hot contact in the assembling process can be discharged from the stepped hole.
The invention is further described with reference to the drawings and the specific embodiments.
Drawings
FIG. 1 is a schematic view of the assembly of the present invention;
fig. 2 is a schematic structural diagram of the present invention;
fig. 3 is a sectional view a-a of fig. 2.
In the attached drawing, 1 is an inner cylinder, 2 is a guide plate, 2-1 is a guide hole, 3 is a shell, 4 is a support upright post, 5 is a support cross rod, 6 is a base, 7 is a positioning boss, 8 is a positioning groove, and 9 is a stepped hole.
Detailed Description
Referring to fig. 1 to 3, a positioning device for interference fit of an outer shell and an inner cylinder comprises a base 6 and a guide plate 2. The fixed three support post 4 that sets up on the base 6, three support post 4 is the semicircle distribution, and the upper end and the deflector 2 fixed connection of three support post 4, wherein are equipped with respectively between the support post 4 of both sides and the support post 4 of centre and support horizontal pole 5, form the pulling force through support horizontal pole 5 to three support post 4, guarantee the supporting role of support post 4 to deflector 2. This embodiment sets up two sets of support horizontal poles 5 between the support post 4 of both sides and the support post 4 in the middle of, and two sets of support horizontal poles 5 are range from top to bottom, further guarantee support column 4's support stability. Support horizontal pole 5 and be the arc, and the radius of curved support horizontal pole 5 is greater than the radius of shell 3, and curved support horizontal pole 5 can make and leave bigger space between three support post 4 and hold the great shell 3 of diameter, and the radius of curved support horizontal pole 5 is greater than the radius of shell 3 and can avoid supporting horizontal pole 5 to cause the interference to placing shell 3. And an opening for the shell 3 to pass through is reserved between the supporting columns 4 at the two sides, so that a yielding space is reserved for placing the shell 3. Be equipped with a location boss 7 on the base 6, be equipped with open-ended positioning groove 8 on the boss 7 of location for place shell 3, the open end of this positioning groove 8 extends to the edge of location boss 7, when placing the shell, only needs place shell 3 at this positioning groove 8's open end, can the manual work push it to positioning groove 8 in the location, workman not only convenient but also laborsaving during actual operation. The guide plate 2 is provided with a guide hole 2-1 for inserting the inner cylinder 1, the inner cylinder 1 is pressed into the shell 3 through the guide hole 2-1 during assembly, and the inner cylinder 1 can be prevented from deflecting under the guide effect of the guide hole 2-1, so that the inner cylinder 1 is always aligned with the inner hole of the shell 3. Positioning groove 8's tank bottom is equipped with shoulder hole 9, shoulder hole 9's the diameter in big footpath hole is greater than inner tube 1's external diameter, and the diameter in small footpath hole is less than inner tube 1's external diameter, and the diameter that sets up shoulder hole 9's big footpath hole is greater than inner tube 1's diameter, can impress shell 3 for inner tube 1 and reserve a certain distance, prevent that 1 pressure equipment of inner tube from advancing behind the shell 3 and forming the impact with positioning groove 8's tank bottom, cause inner tube 1 to damage, and the diameter in small footpath hole is less than inner tube 1's diameter and can prevent that inner tube 1 from droing from shoulder hole 9, shoulder hole 9 can also arrange away the assembly in-process inner tube 1 and the soda etc. that 3. The stepped hole 9, the positioning groove 8 and the guide hole 2-1 are on the same axis, so that the accuracy of inserting the inner cylinder 1 into the inner hole of the shell 3 from the guide hole 2-1 is ensured, and the assembly can be smoothly completed.
When the positioning device is used, the shell 3 after heat treatment is pushed into the positioning groove 8 from the opening end of the positioning groove 8 for positioning, the inner cylinder 1 after cold treatment is inserted into the guide hole 2-1 of the guide plate 2, the inner cylinder 1 is aligned to the inner hole of the shell 3 under the guide effect of the guide hole 2-1, then the inner cylinder 1 is quickly pressed into the inner hole of the shell 3, in the assembling process, the guide hole 2-1 plays a role in guiding the press fitting of the inner cylinder 1, so that the inner cylinder 1 can be prevented from deflecting and is always aligned to the inner hole of the shell 3, the shell 3 is positioned in the positioning groove 8 and cannot move, the inner cylinder 1 can be quickly and completely pressed into the shell 3, and after the press fitting is completed, the interference fit is formed after the shell 3 and the inner cylinder 1 return to normal temperature, and the assembly is completed.
Adopt this positioner can fix a position shell 3 after the thermal treatment and inner tube 1 after the cold treatment well to make inner tube 1 can fast complete press fit into the hole of shell 3, and this positioner's simple structure, convenient operation, location are reliable, can greatly improve workman's assembly efficiency, reduce the rejection rate that the pressure equipment failure leads to.
Claims (4)
1. A positioner that is used for shell and inner tube interference fit, its characterized in that: comprises a base (6) and a guide plate (2), wherein three supporting upright posts (4) are fixedly arranged on the base (6), the three supporting upright posts (4) are distributed in a semicircular arc shape, wherein a supporting cross bar (5) is respectively arranged between the supporting upright columns (4) at the two sides and the supporting upright column (4) in the middle, and an opening for the shell (3) to pass through is reserved between the supporting upright posts (4) at the two sides, the upper ends of the three supporting upright posts (4) are fixedly connected with the guide plate (2), a positioning boss (7) is arranged on the base (6), an open positioning groove (8) is arranged on the positioning boss (7) and is used for placing the shell (3), the opening end of the positioning groove (8) extends to the edge of the positioning boss (7), a guide hole (2-1) is arranged on the guide plate (2), used for inserting the inner cylinder (1), and the guide hole (2-1) and the positioning groove (8) are positioned on the same axial line.
2. A positioning device for an interference fit of an outer and inner sleeves as claimed in claim 1, wherein: two groups of supporting cross rods (5) are arranged between the supporting upright columns (4) at the two sides and the supporting upright column (4) in the middle.
3. A positioning device for an interference fit of an outer and inner sleeves as claimed in claim 1, wherein: the support cross rod (5) is arc-shaped, and the radius of the arc-shaped support cross rod (5) is larger than that of the shell (3).
4. A positioning device for an interference fit of an outer and inner sleeves as claimed in claim 1, wherein: the groove bottom of the positioning groove (8) is provided with a stepped hole (9), the diameter of a large-diameter hole of the stepped hole (9) is larger than the outer diameter of the inner cylinder (1), the diameter of a small-diameter hole is smaller than the outer diameter of the inner cylinder (1), and the stepped hole (9), the positioning groove (8) and the guide hole (2-1) are on the same axis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020050056.9U CN212044315U (en) | 2020-01-10 | 2020-01-10 | Positioning device for interference assembly of shell and inner barrel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020050056.9U CN212044315U (en) | 2020-01-10 | 2020-01-10 | Positioning device for interference assembly of shell and inner barrel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212044315U true CN212044315U (en) | 2020-12-01 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020050056.9U Active CN212044315U (en) | 2020-01-10 | 2020-01-10 | Positioning device for interference assembly of shell and inner barrel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212044315U (en) |
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2020
- 2020-01-10 CN CN202020050056.9U patent/CN212044315U/en active Active
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