CN215967437U - Fixture tool for machining inner hole in bottom of shell - Google Patents
Fixture tool for machining inner hole in bottom of shell Download PDFInfo
- Publication number
- CN215967437U CN215967437U CN202121066964.8U CN202121066964U CN215967437U CN 215967437 U CN215967437 U CN 215967437U CN 202121066964 U CN202121066964 U CN 202121066964U CN 215967437 U CN215967437 U CN 215967437U
- Authority
- CN
- China
- Prior art keywords
- frame body
- machining
- sleeve
- shell
- elastic clamping
- Prior art date
- 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.)
- Active
Links
Images
Landscapes
- Jigs For Machine Tools (AREA)
Abstract
The utility model discloses a fixture tool for machining an inner hole at the bottom of a shell, belongs to the technical field of shell part manufacturing, and aims to solve the problem of clamping thin-wall slender shaft parts; the body mechanism comprises a frame body which is positioned on the guide rail; the clamping mechanism comprises a sleeve, an elastic clamping pipe, a disc spring and an adjusting nut; an elastic clamping pipe is arranged in the sleeve; the elastic clamping pipe is provided with a plurality of parts which are uniformly distributed on the circumference, the root parts of the inner ends among the parts are integrated, and the outer ends outside the root parts of the parts have axial gaps; the butterfly spring is sleeved on the periphery of the elastic clamping pipe and is positioned between the adjusting nut and the sleeve; the shifting fork mechanism is positioned at the rear end of the adjusting nut. The novel tool can change the clamping force of the warhead during machining through adjusting the number of the disc springs and the air pressure value of the air cylinder, and prevents machining deformation, so that the processing quality of the warhead is improved.
Description
Technical Field
The utility model belongs to the technical field of manufacturing of shell parts, and particularly relates to a fixture tool for machining an inner hole in the bottom of a shell of a certain warhead.
Background
The warhead shell is an important component of a rocket projectile body and is a base body for forming a destructive element. It is used to load priming system, connect fuse and solid engine, and bear the load. The warhead shell has high processing precision, uneven mass distribution is easy to generate in the processing process, and the processing quality is not easy to guarantee. And secondly, the warhead shell is a typical thin-wall type rotary part and is easy to deform under the action of clamping force and cutting force. As shown in fig. 1, a warhead case is a long cylindrical blank with one end closed, and thus can be clamped only by a cantilever type clamp.
A traditional center frame is shown in fig. 2 and mainly comprises a frame body, a contact, a set screw, a top cover, a nut, an adjusting screw, a pressure plate and the like. The frame body 1 and the pressing plate 8 are fixed on a guide rail of a machine tool through nuts 7. Top cap 4 and support body pass through pin swing joint on one side, fix through nut 5 on one side, at first open the top cap when processing the part of different specifications, put into the standard component, the lock top cap adjusts the position of contact 2 through adjusting screw 6, and the fixed contact of 3 set screw of tightening screw after confirming just can put into the work piece in proper order and process. Practices prove that the parts machined by the traditional center frame have low precision and poor centering effect, and the contact position is adjusted manually repeatedly, so that the labor intensity of workers is high, the safety is poor, and the machining requirements cannot be met well.
Disclosure of Invention
The utility model aims to solve the technical problem of clamping thin-wall slender shaft parts, improves the processing quality and efficiency of a warhead shell by using a clamp, designs and manufactures a tool aiming at the processing characteristics of the thin-wall parts, and is used for clamping the thin-wall parts.
The technical scheme of the utility model is as follows: a fixture tool for machining an inner hole in the bottom of a shell is characterized by comprising a body mechanism, a clamping mechanism and a shifting fork mechanism; the body mechanism comprises a frame body which is positioned on the guide rail; the clamping mechanism comprises a sleeve, an elastic clamping pipe, a disc spring and an adjusting nut; the sleeve is arranged in the cylindrical hole wall above the frame body; a bearing is arranged between the sleeve and the hole wall of the frame body; an elastic clamping pipe is arranged in the sleeve; the elastic clamping pipe is provided with a plurality of parts which are uniformly distributed on the circumference, the root parts of the inner ends among the parts are integrated, and the outer ends outside the root parts of the parts have axial gaps; the outer conical surface of the opening part of the elastic clamping pipe is matched with the inner conical surface of the sleeve, the inner side end of the elastic clamping pipe is connected with the adjusting nut through threads, and the butterfly spring is sleeved on the periphery of the elastic clamping pipe and is positioned between the adjusting nut and the sleeve; the shifting fork mechanism is positioned at the rear end of the adjusting nut.
Furthermore, the pipe clamping opening part of the elastic clamping pipe is a tapered hole with the diameter of the outer end larger than that of the inner end.
Further, the fork mechanism includes a fork, which is located at the rear end of the adjusting nut.
Further, the shifting fork mechanism comprises a shifting fork and a supporting column; the output shaft of the cylinder is connected with the end shaft at one side of the shifting fork, the pillar is connected with the middle of the shifting fork through a pin, and the other side end of the shifting fork is contacted with the adjusting nut.
Further, still include pneumatic mechanism, pneumatic mechanism includes cylinder, trachea and pneumatic valve, and the cylinder drives fork mechanism.
Furthermore, the body mechanism also comprises a pressure plate and a V-shaped block; the pressing plate is positioned below the machine tool guide rail; a machine tool guide rail is arranged between the pressing plate and the frame body, and the frame body is positioned on the guide rail; a V-shaped guide block is arranged between the frame body and the pressure plate.
Furthermore, the V-shaped guide block is fixed below the frame body through a screw and is contacted with a guide rail of a machine tool, and a gap is reserved between the V-shaped guide block and the frame body.
Further, the body mechanism also comprises a front end cover and a rear end cover; the front end cover and the rear end cover are connected to two ends of the cylindrical hole above the frame body through screws to seal the cylindrical hole of the frame body.
Further, a processing workpiece is placed inside the outer end of the elastic clamp pipe.
Further, the three-jaw chuck of the machine tool is positioned on the periphery of the outer side end of the sleeve.
The utility model has the technical effects that:
(1) convenient operation, after adjusting the pretightning force earlier stage, only need stir the pneumatic valve switch and can accomplish the centre gripping process during the clamping at every turn, improve work efficiency.
(2) Compare with traditional centre frame, novel centre frame (anchor clamps frock) can change the clamp force of man-hour fight portion through the number of pieces and the cylinder atmospheric pressure value of adjustment belleville spring, prevents to produce processing deformation to improve fight portion processingquality.
Drawings
Fig. 1 is a schematic view of a warhead housing configuration;
FIG. 2 is a schematic view of a conventional steady rest configuration;
FIG. 3 is a front view of the assembled new center frame
FIG. 4 is a left side view of the assembled new center frame
FIG. 5 is a schematic two-dimensional structure of the body mechanism
FIG. 6 is a schematic two-dimensional structure of a clamping mechanism
FIG. 7 is a schematic diagram of a three-dimensional structure of a fork shifter
FIG. 8 is a schematic three-dimensional view of the elastic clamp tube
Wherein 9: pressing a plate; 10: a V-shaped block; 11: a frame body; 12: a front end cover; 13: a rear end cap; 14: a belleville spring; 15: adjusting the nut; 16: a sleeve; 17: an elastic clamping tube; 18: a shifting fork; 19: and a support pillar.
Detailed Description
The present invention is described in further detail below.
A fixture tool for machining an inner hole in the bottom of a shell, which is also called a center frame, comprises a body mechanism, a clamping mechanism and a shifting fork mechanism.
The body mechanism shown in fig. 5 includes: the device comprises a pressing plate 9, a frame body 11, a V-shaped block 10, a front end cover 12 and a rear end cover 13.
The pressing plate 9 is positioned below the machine tool guide rail; a machine tool guide rail is arranged between the pressure plate 9 and the frame body 11, and the frame body 11 is positioned on the guide rail; a V-shaped guide block is arranged between the frame body 11 and the pressure plate 9.
The V-shaped guide block is fixed below the frame body 11 through a screw and is in contact with a guide rail of a machine tool, a gap is reserved between the V-shaped guide block and the frame body, the radial position of the novel center frame can be adjusted through an adjusting screw, and centering of the warhead part during machining is guaranteed.
The front end cover 12 and the rear end cover 13 are connected to two ends of the cylindrical hole above the frame body through screws to close the cylindrical hole of the frame body 11.
The clamping mechanism shown in fig. 6 includes a sleeve 16, an elastic clamp tube 17, a disc spring 14; the nut 15 is adjusted.
The sleeve 16 is arranged in the cylindrical hole wall above the frame body 11; and a bearing is arranged between the sleeve 16 and the hole wall of the frame body 11 to support rotation and reduce friction.
The sleeve 16 is internally provided with an elastic clamping tube 17. As shown in fig. 8, the elastic clamp tube 17 has a plurality of portions uniformly distributed on the circumference, the inner root portions of the portions are integrated, and gaps in the axial direction are formed outside the root portions of the portions, so that the workpiece can be clamped or expanded under the action of external force. The mouth of the elastic clamping tube 17 is a conical hole with the outside diameter larger than the inside diameter.
The outer conical surface of the opening of the elastic clamping pipe is matched with the inner conical surface of the sleeve, the inner side end of the elastic clamping pipe is connected with the adjusting nut 15 through threads, and the butterfly spring is sleeved on the periphery of the elastic clamping pipe and is positioned between the adjusting nut and the sleeve 16.
The fork mechanism shown in fig. 7 includes: a fork 18 and a pillar 19.
The output shaft of the cylinder is connected with the rear end shaft of the shifting fork 18 to provide power for the shifting fork, the pillar 19 is connected with the middle support shifting fork of the shifting fork through a pin, the front end of the shifting fork is contacted with the adjusting nut, and the adjusting nut is pushed to move so as to push the elastic clamping pipe to move axially.
The pneumatic mechanism comprises a cylinder, an air pipe and a pneumatic valve and provides power for the center frame.
The novel fixture tool method comprises the following steps:
when the novel center frame clamping warhead is opened, the pneumatic valve is opened at first, the shifting fork 18 compresses the adjusting nut 15 to compress the butterfly spring 14, the elastic clamp pipe 17 moves rightwards, the clamp pipe opens, the warhead passes through the center frame, the head is placed into the three-jaw chuck to be clamped tightly, the pneumatic valve is closed, the butterfly spring recovers, thereby the adjusting nut pulls the elastic clamp pipe to move leftwards to clamp the tail part of a workpiece, after the processing of the warhead is completed, the three jaws are loosened, the pneumatic valve is opened, and the elastic clamp pipe moves rightwards to loosen the warhead.
Claims (10)
1. A fixture tool for machining an inner hole in the bottom of a shell is characterized by comprising a body mechanism, a clamping mechanism and a shifting fork mechanism;
the body mechanism comprises a frame body (11), and the frame body (11) is positioned on the guide rail;
the clamping mechanism comprises a sleeve (16), an elastic clamping pipe (17), a disc spring (14) and an adjusting nut (15);
the sleeve (16) is arranged in the cylindrical hole wall above the frame body (11); a bearing is arranged between the sleeve (16) and the hole wall of the frame body (11); an elastic clamping pipe (17) is arranged in the sleeve (16); the elastic clamping pipe (17) is provided with a plurality of parts which are uniformly distributed on the circumference, the root parts of the inner ends among the parts are integrated, and gaps in the axial direction are formed outside the root parts of the parts, namely the outer ends; the outer conical surface of the opening part of the elastic clamping pipe is matched with the inner conical surface of the sleeve, the inner side end of the elastic clamping pipe is connected with an adjusting nut (15) through threads, and a butterfly spring is sleeved on the periphery of the elastic clamping pipe and is positioned between the adjusting nut and the sleeve (16);
the shifting fork mechanism is positioned at the rear end of the adjusting nut.
2. The fixture tool for machining the inner hole in the bottom of the shell body as claimed in claim 1, wherein a tube clamping opening of the elastic clamping tube (17) is a tapered hole with an outer end diameter larger than an inner end diameter.
3. The tool of claim 1, wherein the fork mechanism comprises a fork at a rear end of the adjusting nut.
4. The fixture tool for machining the inner hole in the bottom of the shell is characterized in that the shifting fork mechanism comprises a shifting fork and a support (19); the output shaft of the cylinder is connected with the end shaft at one side of the shifting fork, the pillar is connected with the middle of the shifting fork through a pin, and the other side end of the shifting fork is contacted with the adjusting nut.
5. The fixture tool for machining the inner hole in the bottom of the shell according to claim 1, further comprising a pneumatic mechanism, wherein the pneumatic mechanism comprises an air cylinder, an air pipe and a pneumatic valve, and the air cylinder drives the shifting fork mechanism.
6. The fixture tool for machining the inner hole in the bottom of the shell is characterized in that the body mechanism further comprises a pressure plate (9) and a V-shaped block (10); the pressing plate (9) is positioned below the machine tool guide rail; a machine tool guide rail is arranged between the pressure plate (9) and the frame body (11), and the frame body (11) is positioned on the guide rail; a V-shaped guide block is arranged between the frame body (11) and the pressure plate (9).
7. The fixture tool for machining the inner hole in the bottom of the shell as claimed in claim 6, wherein the V-shaped guide block is fixed below the frame body through a screw and is in contact with a guide rail of a machine tool, and a gap is formed between the V-shaped guide block and the frame body.
8. The fixture tool for machining the inner hole in the bottom of the shell according to claim 1, wherein the body mechanism further comprises a front end cover and a rear end cover; the front end cover and the rear end cover are connected to two ends of the cylindrical hole above the frame body through screws to seal the cylindrical hole of the frame body.
9. The fixture tool for machining the inner hole in the bottom of the shell body as claimed in claim 1, wherein a machining workpiece is placed inside the outer end of the elastic clamping tube (17).
10. The fixture tool for machining the inner hole in the bottom of the shell as claimed in claim 1, wherein a three-jaw chuck of a machine tool is located on the outer periphery of the outer end of the sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121066964.8U CN215967437U (en) | 2021-05-18 | 2021-05-18 | Fixture tool for machining inner hole in bottom of shell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121066964.8U CN215967437U (en) | 2021-05-18 | 2021-05-18 | Fixture tool for machining inner hole in bottom of shell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215967437U true CN215967437U (en) | 2022-03-08 |
Family
ID=80513103
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121066964.8U Active CN215967437U (en) | 2021-05-18 | 2021-05-18 | Fixture tool for machining inner hole in bottom of shell |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215967437U (en) |
-
2021
- 2021-05-18 CN CN202121066964.8U patent/CN215967437U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201073738Y (en) | Lathe fixture | |
| CN205021244U (en) | A milling fixture that is used for centering clamping part axis of reference on lathe | |
| CN111283612A (en) | Device for mechanical extrusion type flaring | |
| CN105562748A (en) | Finish turning clamp for machining high-precision thin-wall part | |
| CN110926695A (en) | Automatic centering and pressing device for balancing machine with conical inner hole rotor | |
| CN105798772A (en) | High-precision bar clamping device | |
| CN111390211A (en) | Chuck structure for rapidly clamping shaft workpieces | |
| CN109676421B (en) | Special fixture for high-precision spherical hole drilling on rocker arm part | |
| CN215967437U (en) | Fixture tool for machining inner hole in bottom of shell | |
| CN208840544U (en) | A kind of fixed device of thin-walled parts aeroelasticity with threaded hole | |
| CN212734184U (en) | Oil-gas double-control anti-deformation tailstock | |
| CN213052885U (en) | Self-centering rapid drilling clamp for rocker shaft of speed regulator | |
| CN2843695Y (en) | Instrument lathe automated exchanged cutter device | |
| CN203092331U (en) | Self-adaption clamping tool for blade machining | |
| CN215239506U (en) | Turning clamp for exhaust pipe of supercharger | |
| CN204546070U (en) | A kind of sheet workpiece turning clamp | |
| CN216226989U (en) | Spline internal expanding machine tool clamp with good reliability | |
| CN213054294U (en) | Clamp for simultaneously grinding center holes at two ends of shaft part | |
| CN210209533U (en) | Internal expansion type precision turning clamp | |
| CN212240194U (en) | Thin wall casing damping clamping device with adjustable | |
| CN210967039U (en) | Centrifugal quick clamping lathe fixture | |
| CN219648719U (en) | Clamp for turning external threads of shaft diameter type stator blade threaded shaft | |
| CN209094590U (en) | A kind of aerodynamic force expansion core fixture | |
| CN113118801A (en) | Special fixture for copper bush part machining | |
| CN108080982A (en) | A kind of general thin wall component flexible fixture |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |