CN219234652U - Milling fixture for thin-wall workpiece - Google Patents
Milling fixture for thin-wall workpiece Download PDFInfo
- Publication number
- CN219234652U CN219234652U CN202320299373.8U CN202320299373U CN219234652U CN 219234652 U CN219234652 U CN 219234652U CN 202320299373 U CN202320299373 U CN 202320299373U CN 219234652 U CN219234652 U CN 219234652U
- Authority
- CN
- China
- Prior art keywords
- thin
- mandrel
- wall
- hydraulic expansion
- hole
- 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
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
Landscapes
- Jigs For Machine Tools (AREA)
Abstract
The utility model discloses a thin-wall workpiece milling clamp which comprises a clamp body, a hydraulic expansion clamping mechanism and a lock sleeve, wherein the left end part of the clamp body is a first cylinder which can be matched with a center, the right end part of the clamp body is a second step cylinder which can be matched with an index chuck, the middle part of the clamp body is a clamping table, the hydraulic expansion clamping mechanism is fixedly arranged on the clamping table, a clamping section of the hydraulic expansion clamping mechanism stretches into the center Kong Nazhang of the thin-wall workpiece to clamp the thin-wall workpiece, an external thread is arranged on the outer wall of a connecting section of the hydraulic expansion clamping mechanism, a corresponding internal thread is arranged at the lower part of the inner wall of the lock sleeve, the lock sleeve penetrates through a cylinder part of the thin-wall workpiece to be in threaded connection with the connecting section of the hydraulic expansion clamping mechanism, the inner end surface of the lock sleeve compresses the step surface of the thin-wall workpiece, and the lower end surface of the thin-wall workpiece is abutted against the step surface of the connecting section of the hydraulic expansion clamping mechanism. The milling method can realize milling of the thin-wall workpiece and simultaneously ensure the machining precision and the machining stability of the thin-wall workpiece.
Description
Technical Field
The utility model belongs to the field of milling fixture, and particularly relates to a milling fixture for a thin-wall workpiece.
Background
The thin-wall workpiece has poor clamping performance and processing performance due to the fact that the thin-wall workpiece is thin in structure and poor in strength, and deformation of the thin-wall workpiece is easy to occur in the clamping and processing processes. When the precision is required, the common clamping method for milling basically cannot meet the requirement, or the clamping strength is insufficient, and the thin-wall workpiece moves in the machining process to cause scrapping of the part; or the thin-wall workpiece is deformed in the clamping process, so that the precision requirement cannot be met. The slow wire feeding processing can meet the processing requirement and has low clamping force requirement, but the processing time is long and the cost is high.
Aiming at the situation, a thin-wall workpiece milling fixture is required to be designed, and the problems of efficiency, cost, precision and stability of high-precision thin-wall workpiece milling processing are solved.
Disclosure of Invention
The utility model aims to provide a thin-wall workpiece milling fixture, which is used for realizing milling of a thin-wall workpiece and ensuring the machining precision and the machining stability of the thin-wall workpiece.
The utility model discloses a thin-wall workpiece milling clamp, which comprises a clamp body, a hydraulic expansion clamping mechanism and a lock sleeve, wherein the left end part of the clamp body is a first cylinder capable of being matched with a center, the right end part of the clamp body is a second step cylinder capable of being matched with an index chuck, the middle part of the clamp body is a clamping table, the hydraulic expansion clamping mechanism is fixedly arranged on the clamping table, a clamping section of the hydraulic expansion clamping mechanism stretches into the center Kong Nazhang of a thin-wall workpiece to clamp the thin-wall workpiece, an external thread is arranged on the outer wall of a connecting section of the hydraulic expansion clamping mechanism, a corresponding internal thread is arranged at the lower part of the inner wall of the lock sleeve, the lock sleeve penetrates through a cylinder body part of the thin-wall workpiece to be in threaded connection with the connecting section of the hydraulic expansion clamping mechanism, the inner end surface of the lock sleeve compresses the step surface of the thin-wall workpiece, and the lower end surface of the thin-wall workpiece is abutted against the step surface of the connecting section of the hydraulic expansion clamping mechanism.
Preferably, the hydraulic expansion clamping mechanism comprises a sleeve, a mandrel, a screw plug, a copper pad, a liquid plastic medium and a plunger assembly, wherein the sleeve is assembled on the outer wall of a clamping section of the mandrel in an interference mode, an external thread is arranged on the outer wall of a connecting section of the mandrel, an expansion cavity and an exhaust hole are formed in the mandrel, the expansion cavity comprises a main channel which is formed at one end of the mandrel and extends along the axial direction and a branch channel which is symmetrically radiated along the circumferential direction of the main channel, the branch channel is communicated with a gap between the outer wall of the clamping section of the mandrel and the sleeve, the exhaust hole is positioned at the other end of the mandrel and is communicated with the branch channel through a symmetrical exhaust branch, the liquid plastic medium is arranged in the expansion cavity, the plunger assembly is arranged in the main channel and extrudes the liquid plastic medium, the copper pad is arranged in the exhaust hole, and the screw plug is in the exhaust hole in a screwed mode to compress the copper pad so as to seal the exhaust channel.
Preferably, the plunger assembly comprises a compression screw and a plunger, one end of the plunger is in contact with the liquid plastic medium, the other end of the plunger is matched with the compression screw, and the plunger is driven to move through screwing in and screwing out of the compression screw. The compression screw is screwed inwards (i.e. the compression screw is screwed in) to drive the plunger to move inwards so as to increase the pressure of the liquid plastic medium, and the thin wall of the sleeve can expand outwards uniformly, thereby achieving the purpose of expanding and clamping the thin-wall workpiece. The compression screw is unscrewed outwards (namely the compression screw is unscrewed), the plunger is driven to move outwards, the pressure of the liquid plastic medium is reduced, the thin wall of the sleeve can shrink inwards uniformly, and the thin wall workpiece is naturally loosened.
Preferably, the side wall of the lock sleeve is provided with a tightening hole extending along the radial direction, the lock sleeve is tightened by using a tool, the connection section of the lock sleeve and the mandrel is screwed, a special large wrench is not needed during screwing, the operation space can be saved, and the thin-wall workpiece milling fixture can be used for a small machine tool.
Preferably, a mandrel mounting hole site is formed in the clamping table, and the mandrel mounting hole site comprises a mandrel assembly hole, a mandrel positioning hole and a screw assembly hole; the mandrel is provided with a pin hole corresponding to the mandrel positioning hole and a screw mounting hole corresponding to the screw mounting hole; the installation section of mandrel is adorned in the mandrel mounting hole, and the lower step face of mandrel is laminated with the plane of clamping platform, and the cylindric lock passes the pinhole and stretches into in the mandrel locating hole, fixes a position the mandrel, and hexagon socket head cap screw passes the screw mounting hole and with screw mounting hole spiro union, makes mandrel fixed connection on clamping platform to ensure anchor clamps precision.
Preferably, the hydraulic expansion clamping mechanism is provided with two sets, the number of the lock sleeves is two, and the clamping table is provided with two groups of mandrel mounting holes. The milling device can simultaneously clamp two thin-wall workpieces, further milling of the two thin-wall workpieces can be realized through one-time assembly, and milling efficiency is improved.
The utility model has the following effects:
(1) The thin-wall workpiece is held in the expansion mode through the hydraulic expansion clamping mechanism, so that the thin-wall workpiece is uniformly stressed, deformation caused by clamping is reduced, and the machining precision and the machining stability of the thin-wall workpiece are guaranteed.
(2) The radial clamping of the thin-wall workpiece is realized by utilizing the hydraulic expansion clamping mechanism, the axial and circumferential locking of the thin-wall workpiece is realized by utilizing the threaded connection of the lock sleeve and the hydraulic expansion clamping mechanism, the axial movement or rotation of the thin-wall workpiece is prevented, the clamping stability is further enhanced, and the processing stability of the thin-wall workpiece is better ensured especially under the condition of high stress during milling.
(3) The method avoids the use of high-cost processing means (such as slow wire feeding), improves the processing quality of the thin-wall workpiece, reduces the processing cost and realizes the control of the production cost.
Drawings
Fig. 1 is a schematic diagram of a thin-walled workpiece clamping fixture for clamping a thin-walled workpiece in this embodiment.
Fig. 2 is a front view of the fixture body in this embodiment.
Fig. 3 is a top view of the fixture body in this embodiment.
Fig. 4 is a schematic structural diagram of a hydraulic expansion clamping mechanism in the present embodiment.
Fig. 5 is a schematic view of a thin-walled workpiece clamped in this embodiment (thick solid line is a portion to be machined).
Detailed Description
As shown in fig. 1 to 5, the thin-wall workpiece milling fixture in the present embodiment includes a fixture body 1, two sets of hydraulic expansion clamping mechanisms 2, and two lock sleeves 3.
The left end part of the clamp body 1 is a first cylinder 11 which can be matched with a center, the right end part of the clamp body 1 is a second step cylinder 12 which can be matched with an index chuck, and the middle part of the clamp body 1 is a clamping table 13. Two sets of spindle mounting holes are formed in the clamping table 13, and each set of spindle mounting holes comprises a spindle mounting hole 131, a spindle positioning hole 132 and four screw mounting holes 133.
Each set of hydraulic expansion gripping mechanism 2 comprises a sleeve 21, a spindle 22, a plug screw 23, a copper pad 24, a liquid plastic medium 25 and a plunger assembly comprising a compression screw 26 and a plunger 27. The sleeve 21 is interference-fitted on the outer wall of the clamping section of the spindle 22, the outer wall of the connecting section of the spindle 22 is provided with external threads, and the connecting section of the spindle 22 is provided with a pin hole corresponding to the spindle positioning hole 132 and four screw mounting holes corresponding to the four screw mounting holes 133. The mandrel 22 is internally provided with an bulging cavity and an exhaust hole, the bulging cavity comprises a main channel which is arranged at one end of the mandrel 22 and extends along the axial direction and a branch channel which radiates symmetrically along the circumferential direction of the main channel, the branch channel is communicated with a gap between the outer wall of a clamping section of the mandrel 22 and the sleeve 21, the exhaust hole is positioned at the other end of the mandrel and is communicated with the branch channel through a symmetrical exhaust branch, a liquid plastic medium 25 is arranged in the bulging cavity, a compression screw 26 and a plunger 27 are arranged in the main channel, one end of the plunger 27 is contacted with the liquid plastic medium 25, the other end of the plunger 27 is matched with the compression screw 26 to extrude the liquid plastic medium 25, a copper pad 24 is arranged in the exhaust hole, and the screw plug 23 is in threaded connection with the exhaust hole to compress the copper pad 24 to seal the exhaust channel.
The lower part of the inner wall of the lock sleeve 3 is provided with an internal thread corresponding to the external thread of the outer wall of the connecting section of the mandrel 22, and the side wall of the lock sleeve 3 is provided with a tightening hole 31 extending along the radial direction.
The clamp body 1 is mounted on a workbench by utilizing the dividing disc and the center, one by one. When each set of hydraulic expansion clamping mechanism is assembled, the mounting section of the mandrel 22 is arranged in the mandrel assembly hole 131, the lower step surface of the mandrel 22 is attached to the plane of the clamping table 13, the cylindrical pin 5 penetrates through the pin hole and stretches into the mandrel positioning hole 132 to position the mandrel 22, and the four hexagon socket screws 6 respectively penetrate through the four screw assembly holes 133 and are in threaded connection with the four screw mounting holes, so that the mandrel 22 is fixedly connected to the clamping table 13.
When the thin-wall workpiece 4 is clamped, the clamping sections of the sleeve 21 and the mandrel 22 extend into the thin-wall workpiece 4, the lower end face of the thin-wall workpiece 4 is abutted against the step face of the connecting section of the mandrel 22, when the compression screw 26 is screwed inwards (namely, the compression screw 26 is screwed in), the pressure of the liquid plastic medium 25 in the bulging cavity is increased, the thin wall of the sleeve 21 uniformly expands outwards, the thin-wall workpiece 4 is clamped by radial expansion, the lock sleeve 3 passes through the barrel part of the thin-wall workpiece 4 and is in threaded connection with the connecting section of the mandrel 22 (the connecting section of the lock sleeve 3 and the mandrel 22 is screwed in the screwing hole 31 by using a special tool), and the step face of the thin-wall workpiece 4 is tightly pressed by the inner end face of the lock sleeve 3, so that the thin-wall workpiece 4 is axially and circumferentially locked, and the clamping of the thin-wall workpiece 4 is completed.
Claims (6)
1. Thin wall work piece milling fixture, including the anchor clamps body (1), its characterized in that: the hydraulic expansion clamping mechanism is characterized by further comprising a hydraulic expansion clamping mechanism (2) and a lock sleeve (3), wherein the left end part of the clamp body (1) is a first cylinder (11) capable of being matched with a center, the right end part of the clamp body (1) is a second step cylinder (12) capable of being matched with an index chuck, the middle part of the clamp body (1) is a clamping table (13), the hydraulic expansion clamping mechanism is fixedly arranged on the clamping table (13), a clamping section of the hydraulic expansion clamping mechanism stretches into the center Kong Nazhang of the thin-wall workpiece (4) to clamp the thin-wall workpiece, an external thread is arranged on the outer wall of the connecting section of the hydraulic expansion clamping mechanism, a corresponding internal thread is arranged on the lower portion of the inner wall of the lock sleeve (3), the lock sleeve (3) penetrates through the cylinder part of the thin-wall workpiece (4) to be in threaded connection with the connecting section of the hydraulic expansion clamping mechanism, the inner end surface of the lock sleeve (3) presses the step surface of the thin-wall workpiece (4), and the lower end surface of the thin-wall workpiece (4) abuts against the step surface of the connecting section of the hydraulic expansion clamping mechanism.
2. The thin-walled workpiece milling fixture of claim 1 wherein: the hydraulic expansion clamping mechanism (2) comprises a sleeve (21), a mandrel (22), a screw plug (23), a copper pad (24), a liquid plastic medium (25) and a plunger assembly, wherein the sleeve (21) is assembled on the outer wall of a clamping section of the mandrel (22) in an interference mode, an external thread is arranged on the outer wall of a connecting section of the mandrel (22), a bulging cavity and an exhaust hole are formed in the mandrel (22), the bulging cavity comprises a main channel and a branch channel, the main channel is formed in one end of the mandrel and extends along the axial direction, the branch channel symmetrically radiates along the circumferential direction of the main channel, the branch channel is communicated with a gap between the outer wall of the clamping section of the mandrel and the sleeve, the exhaust hole is located at the other end of the mandrel and is communicated with the branch channel through a symmetrical exhaust branch channel, the liquid plastic medium (25) is arranged in the bulging cavity, the plunger assembly is arranged in the main channel to extrude the liquid plastic medium (25), the copper pad (24) is arranged in the exhaust hole, the screw plug (23) is screwed with the exhaust hole to compress the copper pad (24) to seal the exhaust channel.
3. The thin-walled workpiece milling fixture of claim 2 wherein: the plunger assembly comprises a compression screw (26) and a plunger (27), one end of the plunger (27) is in contact with a liquid plastic medium (25), the other end of the plunger is matched with the compression screw (26), and the plunger is driven to move through screwing-in and screwing-out of the compression screw (26).
4. The thin-walled workpiece milling fixture of claim 2 wherein: the side wall of the lock sleeve (3) is provided with a tightening hole (31) extending along the radial direction.
5. The thin-walled workpiece milling fixture of any of claims 2 to 4, wherein: the clamping table (13) is provided with a mandrel mounting hole site, and the mandrel mounting hole site comprises a mandrel mounting hole (131), a mandrel positioning hole (132) and a screw mounting hole (133); the mandrel (22) is provided with a pin hole corresponding to the mandrel positioning hole (132) and a screw mounting hole corresponding to the screw mounting hole (133); the installation section of the mandrel (22) is arranged in the mandrel assembly hole (131), the lower step surface of the mandrel (22) is attached to the plane of the clamping table (13), the cylindrical pin (5) penetrates through the pin hole and stretches into the mandrel positioning hole to position the mandrel (22), and the inner hexagon screw (6) penetrates through the screw assembly hole (133) and is in threaded connection with the screw assembly hole, so that the mandrel (22) is fixedly connected to the clamping table (13).
6. The thin-walled workpiece milling fixture of claim 5 wherein: the hydraulic expansion clamping mechanisms are two, the number of the lock sleeves (3) is two, and two groups of mandrel mounting holes are formed in the clamping table (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320299373.8U CN219234652U (en) | 2023-02-23 | 2023-02-23 | Milling fixture for thin-wall workpiece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320299373.8U CN219234652U (en) | 2023-02-23 | 2023-02-23 | Milling fixture for thin-wall workpiece |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219234652U true CN219234652U (en) | 2023-06-23 |
Family
ID=86808861
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320299373.8U Active CN219234652U (en) | 2023-02-23 | 2023-02-23 | Milling fixture for thin-wall workpiece |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219234652U (en) |
-
2023
- 2023-02-23 CN CN202320299373.8U patent/CN219234652U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107127619B (en) | High-precision synchronizer gear ring hot post-processing grooving clamp | |
| CN205021244U (en) | A milling fixture that is used for centering clamping part axis of reference on lathe | |
| CN111113096A (en) | Automobile air compressor support part plane milling and drilling clamp and using method thereof | |
| CN212822770U (en) | Hydraulic chuck for machine tool | |
| CN2820426Y (en) | Fastening device for forming workpiece inner screw | |
| CN219234652U (en) | Milling fixture for thin-wall workpiece | |
| CN211052628U (en) | Special clamp for drilling of swing arm shaft of tractor | |
| CN202088012U (en) | Mechanical clamping spring collet for holes | |
| CN219074939U (en) | Clamping device for thin-wall pipe fitting machining | |
| CN210475592U (en) | Inner hole positioning workpiece and expanding device | |
| CN109590499B (en) | Machining method for inner hole of machine shell | |
| CN217018665U (en) | Axial positioning structure of numerical control lathe | |
| CN217018669U (en) | Internal expanding self-centering clamping device | |
| CN108237408B (en) | Rotary machining center fixture | |
| CN218363530U (en) | Cylinder body positioning and tensioning quick-change clamp | |
| CN219945785U (en) | Liquid expansion mandrel clamp for grinding cam of harmonic speed reducer | |
| CN111015514A (en) | Scalable through plane drive top mechanism | |
| CN220030793U (en) | Manual expansion type clamp | |
| CN111015305B (en) | Spiral tube type hydraulic expansion shaft | |
| CN215845882U (en) | Boring tool for special-shaped workpiece | |
| CN219379877U (en) | Length fixing device for forward pushing type collet chuck | |
| CN213531760U (en) | Thin-wall sleeve turning clamp | |
| CN217370520U (en) | Piston refrigeration compressor unit cylinder jacket turning device | |
| CN211439088U (en) | Automobile air compressor support part milling plane, drilling adds clamping apparatus | |
| CN221270395U (en) | Radial drilling positioning device for shaft parts |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |