CN113977314A - Variable-diameter thin-walled tube clamping device - Google Patents
Variable-diameter thin-walled tube clamping device Download PDFInfo
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- CN113977314A CN113977314A CN202111201306.XA CN202111201306A CN113977314A CN 113977314 A CN113977314 A CN 113977314A CN 202111201306 A CN202111201306 A CN 202111201306A CN 113977314 A CN113977314 A CN 113977314A
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- supporting
- support
- pin shaft
- plate
- rod
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- 230000007246 mechanism Effects 0.000 claims abstract description 34
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
- B23Q3/02—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for mounting on a work-table, tool-slide, or analogous part
- B23Q3/06—Work-clamping means
- B23Q3/062—Work-clamping means adapted for holding workpieces having a special form or being made from a special material
- B23Q3/065—Work-clamping means adapted for holding workpieces having a special form or being made from a special material for holding workpieces being specially deformable, e.g. made from thin-walled or elastic material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B11/00—Work holders not covered by any preceding group in the subclass, e.g. magnetic work holders, vacuum work holders
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Jigs For Machine Tools (AREA)
Abstract
The invention discloses a clamping device for a variable-diameter thin-walled tube, which comprises: the diameter-changing mechanism comprises a plurality of groups of first supporting rods, a plurality of groups of second supporting rods and supporting pieces which are radially arranged; the end A of the first support rod is hinged with the end D of the corresponding second support rod through a first pin shaft; the point B of the first support rod is hinged with the point E of the second support rod through a second pin shaft to form a scissors fork; the C end of the first supporting rod is hinged with the F end of the second supporting rod through a third pin shaft; one end of the supporting piece is fixedly connected with the first pin shaft, and the other end of the supporting piece is connected with the third pin shaft in a sliding manner; the device comprises a machine plate and a support frame, wherein the support frame is arranged on the machine plate and used for supporting a reducing mechanism; the output end of the driving device is provided with a driving plate, the driving plate is connected with the support frame in a sliding mode, the middle of the bottom of the reducing mechanism is fixedly connected with the driving plate through a hinged support, and the middle of the top of the reducing mechanism is fixedly installed at the top end of the support frame through a connecting plate; the reducing mechanism of the variable-diameter thin-walled tube clamping device can be used for thin-walled tubes with different diameters, and has strong adaptability and good universality.
Description
Technical Field
The invention relates to a clamping device for a variable-diameter thin-walled tube, and belongs to the technical field of tools.
Background
In production, for the support of the thin-walled pipe, a V-shaped surface pressurizing plate is generally adopted, and the thin-walled pipe is in direct contact with a wall pipe in a linear contact manner, so that deformation is easily caused; or a fixed arc surface supporting tool or a fixed arc-shaped clamping paw is adopted, the diameter cannot be changed, and the universality is not high. It is therefore necessary to design a tube with a diameter that can be varied to accommodate thin walled tubes to be supported or grasped, particularly thin walled low stiffness or flexible pipe bodies.
Disclosure of Invention
The invention aims to provide a variable-diameter thin-walled tube clamping device, which aims to overcome the defects that the diameter of the existing arc-shaped clamping paw cannot be changed and the existing arc-shaped clamping paw is not universal.
A variable diameter thin walled tube clamping device comprising:
the diameter-changing mechanism comprises a plurality of groups of first supporting rods, a plurality of groups of second supporting rods and supporting pieces which are radially arranged; the end A of the first support rod is hinged with the end D of the corresponding second support rod through a first pin shaft; the point B of the first support rod is hinged with the point E of the second support rod through a second pin shaft to form a scissors fork; the C end of the first supporting rod is hinged with the F end of the second supporting rod through a third pin shaft; one end of the supporting piece is fixedly connected with the first pin shaft, and the other end of the supporting piece is connected with the third pin shaft in a sliding manner;
the stand comprises a stand plate and a support frame, and the support frame is arranged on the stand plate and used for supporting the reducing mechanism;
the driving device is arranged at the output end of the driving device, the driving plate is connected with the support frame in a sliding mode, the middle of the bottom of the reducing mechanism is fixedly connected with the driving plate through a hinged support, and the middle of the top of the reducing mechanism is fixedly installed at the top end of the support frame through a connecting plate.
Further, the support member includes a support block and a support rod; one end of the supporting rod is fixedly connected with the first pin shaft, the other end of the supporting rod is slidably connected with the third pin shaft, the supporting block is arranged at one fixed end of the supporting block, one surface far away from the supporting block is a plane or an arc surface, and the axes of the supporting rods are intersected at one point, so that the supporting block is surrounded into an arc surface.
Furthermore, the hinged support is composed of a lower horizontal plate and hinged plates on two sides, and the hinged plates on two sides are hinged with the three ends of the pin shaft.
Further, the driving device comprises a driving motor, a nut and a screw rod; the driving motor is arranged at the bottom of the machine plate, the output end of the driving motor is connected with the lead screw, the nut is connected with the driving plate, and the lead screw is in threaded connection with the nut.
Furthermore, a guide mechanism is arranged between the driving plate and the machine plate.
Further, the guide mechanism comprises a guide sleeve and a guide column; the guide sleeve is arranged below the drive plate, and the matched guide post is vertically and fixedly arranged on the machine plate.
Compared with the prior art, the invention has the following beneficial effects: the variable-diameter thin-walled pipe clamping device clamps or supports the thin-walled pipe by adopting a plurality of groups of variable-diameter mechanisms arranged in parallel, and each supporting block encloses an accurate cylindrical surface, so that the deformation of the supported thin-walled pipe fitting cannot be caused, and the thin-walled pipe or a low-rigidity tubular object is well protected.
The reducing mechanism of the variable-diameter thin-walled tube clamping device can be used for thin-walled tubes with different diameters, and has strong adaptability and good universality.
Drawings
FIG. 1 is a schematic diagram of the apparatus of the present invention;
FIG. 2 is a side view of the present invention in a clasped state;
FIG. 3 is a schematic view of the invention in a retracted state;
FIG. 4 is a side view of the invention in a retracted state;
FIG. 5 is a schematic view of the invention with the thin-walled tube removed and retracted;
FIG. 6 is a schematic view of a reducing mechanism of the present invention;
FIG. 7 is a schematic view of the housing and drive assembly of the present invention;
in the figure: 100. a machine base; 110. a machine plate; 120. a first support frame; 130. a second support frame; 140. a third support frame; 200. a diameter-changing mechanism; 210. a first supporting rod; 220. a second supporting rod; 230. a first pin shaft; 240. a second pin shaft; 250. a third pin shaft; 260. a support member; 261; a support block; 262. a support bar; 270. a hinged support; 280. a coupling plate; 300. a drive device; 311. a drive motor; 312. a coupling; 313. a screw rod; 320. a drive plate; 321. a support plate; 322. a nut; 323. a guide sleeve; 324. A guide post; 400. a thin-walled cylinder.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
As shown in fig. 1 to 7, disclosed is a variable-diameter thin-walled tube clamping device, including:
the diameter changing mechanism 200 comprises a plurality of groups of first support rods 210, second support rods 220 and support pieces 260 arranged in the radial direction; the end A of the first support rod 210 is hinged with the end D of the corresponding second support rod 220 through a first pin shaft 230; the point B of the first support rod 210 is hinged with the point E of the second support rod 220 through a second pin shaft 240 to form a scissors fork; the C end of the first support rod 210 is hinged with the F end of the second support rod 220 through a third pin shaft 250; one end of the supporting part 260 is fixedly connected with the first pin shaft 230, and the other end is in sliding connection with the third pin shaft 250; it is worth noting here that: the point B and the point E are not middle points of the supporting rods, the point B is deviated to the end A, the point E is deviated to the end D, namely the section AB is smaller than the section BC, and the section DE is smaller than the section EF. And the lengths of the AB section and the DE section are equal, and the lengths of the BC section and the EF section are equal.
The larger the distance between the point B and the point E deviating from the middle part is, the smaller the diameter of the arc formed by the AD end is; the smaller the distance between the points B and E from the middle part is, the larger the diameter of the arc formed by the AD end is.
The engine base 100 comprises a machine plate 110 and a support frame, wherein the support frame is arranged on the machine plate 110 and is used for supporting the reducing mechanism;
the reducing mechanism comprises a driving device 300, wherein a driving plate 320 is arranged at the output end of the driving device 300, the driving plate 320 is connected with a support frame in a sliding mode, the middle of the bottom of the reducing mechanism 200 is fixedly connected with the driving plate 320 through a hinged support 270, and the middle of the top of the reducing mechanism is fixedly installed at the top end of the support frame through a connecting plate 280.
As shown in fig. 6, the supporting member 260 includes a supporting block 261 and a supporting rod 262; one end of the support rod 262 is fixedly connected with the first pin shaft 230, the other end of the support rod 262 is slidably connected with the third pin shaft 250, the support block 261 is arranged at the fixed end of the support block 261, one surface far away from the support block 261 is a plane or an arc surface, and the axes of the plurality of support rods 262 are intersected at one point, so that the support block 261 is encircled into an arc surface; the arc radius R can be adjusted: the closer (furled) each support rod is, the larger the arc radius R is, the shorter the enveloped arc is: the more the support rods are pulled open (spread open), the smaller the arc radius R is, the longer the enveloped arc is, and a complete circle can be enclosed, and the size of the arc radius R is changed according to the size of the thin-wall cylinder 400 to clamp the thin-wall cylinder 400;
it is worth noting that: one end of the support block 261 at the upper end of the support rod 262 passes through the middle hole of the first pin shaft 230 and is fixedly connected with the first pin shaft 230, and the support rod 262 is tightly matched with the middle hole of the first pin shaft 230; the lower end of the support rod 262 movably passes through the middle hole of the third pin shaft 250 and is in sliding fit with the middle hole.
As shown in fig. 6, hinge supports 270 are provided at two ends of the third pin shaft 250 corresponding to the lower end of one supporting element in the middle of each group of diameter-changing mechanisms, each hinge support 270 is composed of a lower horizontal plate and hinge plates at two sides, and the hinge plates at two sides are hinged to two ends of the third pin shaft 250. A through hole is formed in the center of the horizontal plate below the hinge support 270 for the support rod 262 to pass through.
The hinge bracket 270 is fixedly coupled to the support plate 321. The supporting plate 321 moves up and down to push each pin shaft three 250 of each group of reducing mechanisms to axially slide along the supporting rod 262 through each hinged support 270:
the third pin shaft 250 rises, the distance between the first pin shaft 230 and the third pin shaft 250 is shortened, the included angle of the scissor fork formed by the first support rod and the second support rod of the reducing mechanism is increased, the support pieces 260 are dispersed, and the radius R of the circular arc formed by the support blocks 261 is reduced.
The third pin shaft 250 descends, the distance between the first pin shaft 230 and the third pin shaft 250 is increased, the included angle of the scissor fork formed by the first support rod and the second support rod of the reducing mechanism is reduced, the support pieces 260 are folded, and the radius R of the circular arc surrounded by the support blocks 261 is increased.
As shown in fig. 6, the driving device 300 includes a driving motor 311, a nut 322, and a screw 313; the driving motor 311 is arranged at the bottom of the machine plate 110, a screw rod 313 is fixedly arranged at the output shaft end of the motor 311 through a coupling 312, a through hole is arranged in the middle of the supporting plate 321 for the supporting rod 262 to pass through, a nut 322 is fixedly arranged below the middle of the supporting plate 321, and the nut 322 is in threaded connection with the screw rod 313.
A guide mechanism is arranged between the driving plate 320 and the machine plate 110, and comprises a guide sleeve 323 and a guide post 324; the guide sleeve 323 is arranged below the driving plate 320, and the matched guide post 324 is vertically and fixedly arranged on the machine plate 110.
The motor 311 drives the screw rod 313 to rotate, and the supporting plate 321 is controlled to jack up upwards or retract downwards through the nut 322;
if the motor 311 drives the screw rod 313 to rotate forward, the supporting plate 321 jacks upwards to push the pin shafts three 250 to slide upwards along the supporting rods 262, the included angle of the scissor forks formed by the supporting rods one and the supporting rods two of the reducing mechanism is increased, the supporting pieces 260 are dispersed, the radius R of the circular arc formed by the supporting blocks 261 is reduced, and the supporting blocks 261 cling to the surface of the supported thin-walled circular tube; (as shown in figures 1 and 2).
On the contrary, the motor 311 drives the screw rod 313 to rotate reversely, the supporting plate 321 retracts downwards, the pin shafts three 250 are pulled to slide downwards along the supporting rod 262, the included angle of the scissor forks formed by the supporting rod one and the supporting rod two of the reducing mechanism is reduced, the supporting pieces 260 are folded, the radius R of the circular arc formed by the supporting blocks 261 is increased, and the supporting blocks 261 leave the surface of the supported thin-walled circular tube; (as shown in figures 3, 4 and 5).
In conclusion, the invention adopts a plurality of groups of reducing mechanisms arranged in parallel to clamp or support the thin-wall pipe, and each supporting block 261 encloses an accurate cylindrical surface, so that the deformation of the supported thin-wall pipe fitting can not be caused, and the thin-wall pipe or the low-rigidity tubular object can be well protected.
The reducing mechanism can be used for thin-wall pipe fittings with different diameters, and has strong adaptability and good universality.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (6)
1. A variable-diameter thin-walled tube clamping device, comprising:
the diameter changing mechanism (200) comprises a plurality of groups of first supporting rods (210), a plurality of groups of second supporting rods (220) and supporting pieces (260) which are arranged in the radial direction; the end A of the first support rod (210) is hinged with the end D of the corresponding second support rod (220) through a first pin shaft (230); the point B of the first support rod (210) is hinged with the point E of the second support rod (220) through a second pin shaft (240) to form a scissors fork; the C end of the first support rod (210) is hinged with the F end of the second support rod (220) through a third pin shaft (250); one end of the supporting piece (260) is fixedly connected with the first pin shaft (230), and the other end of the supporting piece is connected with the third pin shaft (250) in a sliding manner;
the engine base (100) comprises an engine plate (110) and a support frame, wherein the support frame is arranged on the engine plate (110) and used for supporting the reducing mechanism;
drive arrangement (300), drive arrangement's (300) output is equipped with drive plate (320), drive plate (320) and support frame sliding connection, reducing mechanism (200) bottom is middle through hinged-support (270) and drive plate (320) fixed connection, passes through link plate (280) fixed mounting on the support frame top in the middle of the top.
2. The variable-diameter thin-walled tube clamping device according to claim 1, wherein the support member (260) comprises a support block (261) and a support bar (262); one end of each supporting rod (262) is fixedly connected with the first pin shaft (230), the other end of each supporting rod is slidably connected with the third pin shaft (250), the supporting block (261) is arranged at one fixed end of the supporting block (261), one surface far away from the supporting block (261) is a plane or an arc surface, and the axes of the supporting rods (262) are intersected at one point, so that the supporting block (261) is surrounded into an arc surface.
3. The apparatus of claim 2, wherein the hinge support (270) comprises a lower horizontal plate and hinge plates at both sides, and the hinge plates at both sides are hinged to both ends of the pin roll (250).
4. The variable-diameter thin-walled tube clamping device according to claim 1, wherein the driving device (300) comprises a driving motor (311), a nut (322) and a lead screw (313); the driving motor (311) is arranged at the bottom of the machine plate (110), the output end of the driving motor is connected with the screw rod (313), the nut (322) is connected with the driving plate (320), and the screw rod (313) is in threaded connection with the nut (322).
5. The variable-diameter thin-walled tube clamping device according to claim 4, wherein a guide mechanism is provided between the drive plate (320) and the machine plate (110).
6. The variable-diameter thin-walled tube clamping device of claim 5, wherein the guide mechanism comprises a guide sleeve (323) and a guide post (324); the guide sleeve (323) is arranged below the drive plate (320), and the matched guide post (324) is vertically and fixedly arranged on the machine plate (110).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111201306.XA CN113977314A (en) | 2021-10-15 | 2021-10-15 | Variable-diameter thin-walled tube clamping device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111201306.XA CN113977314A (en) | 2021-10-15 | 2021-10-15 | Variable-diameter thin-walled tube clamping device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113977314A true CN113977314A (en) | 2022-01-28 |
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ID=79738750
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111201306.XA Withdrawn CN113977314A (en) | 2021-10-15 | 2021-10-15 | Variable-diameter thin-walled tube clamping device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113977314A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115815688A (en) * | 2022-12-31 | 2023-03-21 | 重庆交通大学 | Cutting equipment for machine-building design |
| CN116984643A (en) * | 2023-09-27 | 2023-11-03 | 宿迁市汇富机床制造有限公司 | Clamping device of cutting machine tool for metal processing |
-
2021
- 2021-10-15 CN CN202111201306.XA patent/CN113977314A/en not_active Withdrawn
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115815688A (en) * | 2022-12-31 | 2023-03-21 | 重庆交通大学 | Cutting equipment for machine-building design |
| CN115815688B (en) * | 2022-12-31 | 2023-12-12 | 重庆交通大学 | Cutting equipment for mechanical manufacturing design |
| CN116984643A (en) * | 2023-09-27 | 2023-11-03 | 宿迁市汇富机床制造有限公司 | Clamping device of cutting machine tool for metal processing |
| CN116984643B (en) * | 2023-09-27 | 2024-01-09 | 宿迁市汇富机床制造有限公司 | Clamping device of cutting machine tool for metal processing |
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| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20220128 |
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| WW01 | Invention patent application withdrawn after publication |