CN109482755B - Closing-in device - Google Patents
Closing-in device Download PDFInfo
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- CN109482755B CN109482755B CN201811409410.6A CN201811409410A CN109482755B CN 109482755 B CN109482755 B CN 109482755B CN 201811409410 A CN201811409410 A CN 201811409410A CN 109482755 B CN109482755 B CN 109482755B
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- sliding block
- rotating rod
- closing
- sliding
- rollers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D41/00—Application of procedures in order to alter the diameter of tube ends
- B21D41/04—Reducing; Closing
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Abstract
The invention provides a closing device, and belongs to the technical field of closing equipment. The device includes base member, two sets of sliding component and two gyro wheels, and is two sets of the sliding component sets up side by side on the base member, two gyro wheels respectively set up one on the sliding component, and rotate along the pivot separately, the gyro wheel is through corresponding the ascending relative position of sliding component regulation horizontal direction. The closing-in device provided by the embodiment of the invention adjusts the relative positions of the two rollers in the horizontal direction through the two groups of different sliding assemblies respectively, can freely adjust the gaps between the rollers and a product according to the closing-in diameter of a closed part respectively, and avoids the problem that the rollers are not coaxial when a single stud controls the two rollers simultaneously, thereby avoiding the problems of easy vibration of the closed part, flanging, burr and other closing-in quality.
Description
Technical Field
The invention relates to a closing device, and belongs to the technical field of closing equipment.
Background
When the liquid rocket engine works, the nozzle enables fuel and oxidant to be fully atomized and mixed so as to generate efficient and stable combustion, the production and processing quality of the nozzle directly influences the atomized combustion characteristics of the nozzle, further influences the thrust change and the overall stability of the engine, and plays a vital role in a dynamic system of the engine. The oxidant/fuel agent nozzle closing-in is an important process in the nozzle production and processing process and is used for end face sealing.
In the closing process, a closing device is adopted to close on a twist drill machine tool, and the closing device controls two rollers simultaneously by a single stud.
Above-mentioned double-screw bolt has two sections screw threads, one section is the right-hand thread, another section position left-hand thread, this structure double-screw bolt is adding man-hour and need carry out twice benchmark and aim at, machining error is great, lead to when using, it is asynchronous easily to take place two gyro wheel removals, thereby produce the asymmetric phenomenon of gyro wheel appearing, lead to being closed up the part and easily producing the vibration, the processingquality problems such as turn-ups, burr appear, be difficult to satisfy the space cause of the brisk development in china, consequently, the quality and the efficiency that how to improve the nozzle close up become the problem of treating urgently.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides a closing device, which solves the problem that two rollers roll asymmetrically due to the original closing device, thereby avoiding the problems of easy vibration, flanging, burr and the like of closed parts.
In order to achieve the above purpose, the invention provides the following technical scheme:
the utility model provides a close device, includes base member, two sets of sliding assembly and two gyro wheels, and is two sets of sliding assembly sets up side by side on the base member, two gyro wheels respectively set up one on the sliding assembly, and rotate along the pivot separately, the gyro wheel is through corresponding sliding assembly adjusts the ascending relative position of horizontal direction.
In an optional embodiment, the sliding assembly comprises a rotating rod, a fastening piece and a sliding block, the sliding block is in fit transmission with the rotating rod, the roller is arranged on the sliding block, and the fastening piece is used for pressing the sliding block along a direction perpendicular to the axial direction of the rotating rod after the roller moves in place in the horizontal direction.
In an optional embodiment, be equipped with a screw hole and a guiding hole on the slider side by side, the dwang includes screw thread section and direction section, the screw thread section of dwang with correspond the screw hole cooperation transmission of slider, the direction section of dwang is worn to establish another in the guiding hole of slider.
In an optional embodiment, the sliding block is provided with a shaft hole, and the roller is connected with the sliding block through a rotating shaft penetrating through the shaft hole.
In an optional embodiment, an annular boss is arranged on the periphery of one end, close to the roller, of the shaft hole, an annular groove is formed between the annular boss and the roller, and balls are arranged in the annular groove.
In an optional embodiment, the base body is provided with a mounting groove, the rotating rod is mounted on the base body through mounting holes formed in two ends of the mounting groove, and a baffle is arranged at an opening of the mounting groove and used for limiting the main body part of the sliding block in the mounting groove.
In an optional embodiment, the clearance between the side surface of the sliding block and the side wall of the mounting groove is 0.01-0.03 mm.
In an optional embodiment, the slider is a two-stage step structure, and higher level step stretches out of the mounting groove and is provided with the annular boss, and lower level step is located in the mounting groove, and the distance between the step surface and the bottom surface under the baffle is 0.01-0.03 mm.
In an alternative embodiment, the necking device further comprises a handle structure arranged on the base body and used for being in butt joint with a machine tool.
In an alternative embodiment, the handle structure is a taper or cylindrical shank.
The invention has the beneficial effects that:
(1) the closing-in device provided by the embodiment of the invention respectively adjusts the relative positions of the two rollers in the horizontal direction through the two groups of different sliding assemblies, can respectively and freely adjust the gap between the roller and a product according to the closing-in diameter of a closed part, and avoids the problem that the roller is not coaxial when a single stud simultaneously controls the two rollers, thereby avoiding the problems of easy vibration of the closed part, and closing-in quality such as flanging and burr;
(2) the structure of the invention has simple manufacturing process, the rotating rod is easy to process, and the processing precision is ensured;
(3) the structure and the process of the invention have simple assembly process, have low requirement on the initial installation position of the sliding block, and can be adjusted in real time through the rotating rod;
(4) the invention has simple structure, replaces the bearing with the ball, saves the production and processing cost and is convenient for later maintenance.
Drawings
Fig. 1 is a schematic structural view of a necking device provided in an embodiment of the present invention;
figure 2 is a left side view of the necking device seen in the direction a of figure 1;
FIG. 3 is a schematic view of the structure seen in cross-section in FIG. 1;
fig. 4 is a schematic structural view of a rotating rod;
FIG. 5 is a schematic view of a nozzle being necked-in;
fig. 6 is a schematic diagram of the relative position of the necking device and the necking nozzle.
Detailed Description
The following further describes the embodiments of the present invention with reference to the drawings and examples.
As shown in fig. 1 and 2, an embodiment of the present invention provides a necking device, which includes a base 7, two sets of sliding assemblies and two rollers 5, wherein the two sets of sliding assemblies are arranged side by side on the base 7, the two rollers 5 are respectively arranged on one of the sliding assemblies and respectively rotate along a rotating shaft, and the rollers 5 adjust the relative position in the horizontal direction through the corresponding sliding assemblies.
Specifically, referring to fig. 6, in the embodiment of the present invention, the pulleys 5 are arranged side by side in the horizontal direction, when closing, the part to be closed is placed between the two rollers 5, a first distance Δ x between the corresponding roller 5 and the left side of the part to be closed is adjusted by one rolling assembly, and a second distance Δ y between the corresponding roller 5 and the right side of the part to be closed is adjusted by the other rolling assembly.
The closing-in device provided by the embodiment of the invention adjusts the relative positions of the two rollers in the horizontal direction through the two groups of different sliding assemblies respectively, can freely adjust the gaps between the rollers and a product according to the closing-in diameter of a closed part respectively, and avoids the problem that the rollers are not coaxial when a single stud controls the two rollers simultaneously, thereby avoiding the problems of easy vibration of the closed part, flanging, burr and other closing-in quality.
Specifically, as shown in fig. 1 and 3, the sliding assembly includes a rotating rod 6, a fastening member 4 and a sliding block 3, the sliding block 3 is in transmission with the rotating rod 6 in a matching manner, the roller 5 is disposed on the sliding block 3, and the fastening member 4 is used for pressing the sliding block 3 along a direction perpendicular to the axial direction of the rotating rod 6 after the roller 5 moves in place in the horizontal direction. In the embodiment of the invention, the rotating rod 6 can be a screw rod, a stud or a screw rod, etc., and the transmission mode can be screw thread fit transmission, ball transmission, etc., the invention is not limited, and the rotating rod 6 can also be provided with a knob 1 for facilitating the rotation; the tightening piece 4 can be a tightening screw, a pin and the like, so that the relative position between the roller and a part to be closed in the closing process is kept unchanged for convenience of compression, a groove extending along the axial direction of the rotating rod 6 is preferably arranged on the sliding block 3, and the tightening piece 4 is pressed in the groove; in order to ensure the adjusting precision, the height error and the width error of the two sliding blocks 3 are not more than 0.02 mm.
Further, as shown in fig. 3 and 4, a threaded hole 31 and a guide hole 32 are arranged on the slider 3 side by side, the rotating rod 6 comprises a threaded section and a guide section, the threaded section of the rotating rod 6 is in transmission with the threaded hole 31 of the slider 3 in a matching manner, and the guide section of the rotating rod 6 is arranged in the guide hole 32 of the slider 3 in a penetrating manner. The structure can ensure that the two sliding blocks move axially along the rotating rod, ensure the position precision of the two rollers, ensure the integral structure of the device to be compact and save space.
Specifically, as shown in fig. 3, a shaft hole is formed in the slider 3, and the roller 5 is connected to the slider 3 through a rotating shaft penetrating through the shaft hole. The structure is simple to assemble and easy to operate.
Further, as shown in fig. 3, an annular boss is arranged on the periphery of one end of the shaft hole close to the roller 5, an annular groove is formed between the annular boss and the roller 5, and a ball 8 is arranged in the annular groove. The balls are arranged, so that the rollers can normally rotate in the closing process, and the balls are used for replacing bearings, so that the production and processing cost is saved, and the later maintenance is facilitated; to further ensure smooth rotation of the roller, it is preferable that the roughness of the surface of the ball, the surface of the roller and the surface of the slider which contacts the ball be not more than Ra0.8.
As shown in fig. 1 and 3, the base body 7 is provided with an installation groove, and the rotating rod 6 is installed on the base body 7 through installation holes arranged at two ends of the installation groove, in the embodiment of the invention, the base body 7 is formed by a strip-shaped main body structure and side plates arranged at two ends of the main body structure, and the installation holes are arranged on the side plates; and a baffle 2 is arranged at the opening of the mounting groove and used for limiting the main body part of the sliding block 3 in the mounting groove. Specifically, the slider side surface with clearance between the mounting groove lateral wall is 0.01 ~ 0.03mm, and this clearance can enough guarantee that the slider slides smoothly in the mounting groove, can avoid rocking of gyro wheel again. Specifically, as shown in fig. 3, the slider 3 is a two-stage step structure, and the superior step extends out of the mounting groove, and is provided with the annular boss, the inferior step is located in the mounting groove, and the step surface and the distance between the bottom surfaces under the baffle are 0.01-0.03 mm. The height difference can ensure that the sliding block can smoothly slide in the mounting groove and can avoid the shaking and the swinging of the roller.
As shown in fig. 2, the necking device further comprises a handle structure 9 arranged on the base body for interfacing with a machine tool. In particular, the shank structure is a taper shank or a cylindrical shank.
The following is a specific embodiment of the present invention:
as shown in fig. 1 and fig. 2, the necking device for a nozzle provided by this embodiment includes a knob 1, a baffle 2, a slider 3, a fastening piece (fastening screw) 4, a roller 5, a rotating rod (stud) 6, a base 7, and a handle structure 9, where the handle structure 9 is used for connecting with a machine tool to transmit power. The knob, stud, slide and set screw are used to control the spacing between the roller and the nozzle as shown in fig. 3 and 4.
As shown in FIG. 5, the material of the nozzle to be closed is stainless steel 1Cr18Ni9Ti, and the diameter phi of the outer circle of the closed part
The thickness of the unilateral wall is 0.5-0.6 mm. Closing in requirements: the closing-in edge should not be gnawed, and the closing-in edge is attached to the end face of the nozzle cover, so that the nozzle cover is not allowed to move.
(1) The handle structure 9 adopts a 3# Morse cone, and a machine tool chuck is used for clamping the handle structure 9, so that the closing device is clamped on a machine tool;
(2) clamping the closed nozzle by using a chuck of a machine tool, wherein the closed part is upward;
(3) and rotating the knob, respectively adjusting the two studs to enable the studs to rotate, enabling the idler wheel to move on the studs along with the sliding block, so that the distance delta x and delta y between the idler wheel and a product are adjusted, the distance values are kept at 0.05-0.1 mm, and the sliding block is fixed through a set screw.
(4) And (3) starting the machine tool, rotating the closing device, fixing the closed nozzle, rotating the main shaft of the machine tool at a speed of 150 rpm and a feed rate of 0.1 mm/rpm, enabling the roller to rotate along with the closed nozzle under the influence of extrusion force, enabling the closed part to deform under the influence of axial pressure and circumferential force, and finally closing up.
(5) Through inspection, the quality of the closing surface of the nozzle is good, the nozzle has higher dimensional accuracy and form and position tolerance, the surface roughness Ra of the nozzle can reach 3.2, and the problems of the closing quality such as flanging, burrs and the like are solved.
The above description is only one embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention.
The invention has not been described in detail in part of the common general knowledge of those skilled in the art.
Claims (4)
1. A necking device is characterized in that a material of a to-be-necked device is stainless steel 1Cr18Ni9Ti, and the thickness of a single-side wall is 0.5-0.6 mm; and the closing requirement is as follows: the closing-in edge should not be gnawed, and the closing-in edge is attached to the end face of the nozzle cover, so that the nozzle cover is not allowed to move; the device is characterized by comprising a base body, two groups of sliding assemblies and two rollers, wherein the two groups of sliding assemblies are arranged on the base body side by side, the two rollers are respectively arranged on one sliding assembly and respectively rotate along a rotating shaft, and the rollers adjust the relative positions in the horizontal direction through the corresponding sliding assemblies;
the sliding assembly comprises a rotating rod, a fastening piece and a sliding block, the sliding block is in matched transmission with the rotating rod, the roller is arranged on the sliding block, and the fastening piece is used for pressing the sliding block along a direction perpendicular to the axial direction of the rotating rod after the roller moves in place in the horizontal direction;
the sliding block is provided with a groove extending along the axial direction of the rotating rod, and the fastening piece is pressed in the groove; the height error and the width error of the two sliding blocks are not more than 0.02 mm; the rotating rod is provided with a knob;
the sliding blocks are provided with a threaded hole and a guide hole side by side, the rotating rod comprises a threaded section and a guide section, the threaded section of the rotating rod is in matched transmission with the corresponding threaded hole of the sliding block, and the guide section of the rotating rod is arranged in the guide hole of the other sliding block in a penetrating manner;
the sliding block is provided with an axle hole, and the roller is connected with the sliding block through a rotating shaft penetrating in the axle hole;
an annular boss is arranged on the periphery of one end, close to the roller, of the shaft hole, an annular groove is formed between the annular boss and the roller, and balls are arranged in the annular groove;
the base body is provided with an installation groove, the rotating rod is installed on the base body through installation holes formed in two ends of the installation groove, and a baffle is arranged at an opening of the installation groove and used for limiting the main body part of the sliding block in the installation groove;
the slider is the second grade stair structure, and higher level's step stretches out the mounting groove, and be equipped with annular boss, subordinate's step are located in the mounting groove, and the step face with distance between the bottom surface is 0.01 ~ 0.03mm under the baffle.
2. The necking-in device according to claim 1, wherein the clearance between the side surface of the slider and the side wall of the mounting groove is 0.01-0.03 mm.
3. The necking apparatus of claim 1 further comprising a shank structure disposed on the base for interfacing with a machine tool.
4. A crimping device according to claim 3, characterized in that the handle structure is a tapered or cylindrical handle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811409410.6A CN109482755B (en) | 2018-11-23 | 2018-11-23 | Closing-in device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811409410.6A CN109482755B (en) | 2018-11-23 | 2018-11-23 | Closing-in device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109482755A CN109482755A (en) | 2019-03-19 |
| CN109482755B true CN109482755B (en) | 2020-08-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811409410.6A Active CN109482755B (en) | 2018-11-23 | 2018-11-23 | Closing-in device |
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| Country | Link |
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| CN (1) | CN109482755B (en) |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005297041A (en) * | 2004-04-15 | 2005-10-27 | National Institute Of Advanced Industrial & Technology | Method and apparatus for forming pipe |
| JP2007014983A (en) * | 2005-07-07 | 2007-01-25 | National Institute Of Advanced Industrial & Technology | Method and apparatus for forming pipe |
| CN202006248U (en) * | 2011-01-30 | 2011-10-12 | 赵英培 | Jacket cylinder reducing machine |
| CN202715688U (en) * | 2012-06-04 | 2013-02-06 | 扬州诚德钢管有限公司 | Spin closing-in device with double spinning wheels |
| JP5934062B2 (en) * | 2012-08-31 | 2016-06-15 | Ｊｆｅスチール株式会社 | Spinning method |
| CN207770651U (en) * | 2017-12-10 | 2018-08-28 | 成都西亚科技发展有限公司 | A kind of size reducing machine clamp structure with ejection workpiece |
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2018
- 2018-11-23 CN CN201811409410.6A patent/CN109482755B/en active Active
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| CN109482755A (en) | 2019-03-19 |
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