CN210451756U - Comprehensive rotary workbench for machining high-precision workpiece - Google Patents
Comprehensive rotary workbench for machining high-precision workpiece Download PDFInfo
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- CN210451756U CN210451756U CN201921323170.8U CN201921323170U CN210451756U CN 210451756 U CN210451756 U CN 210451756U CN 201921323170 U CN201921323170 U CN 201921323170U CN 210451756 U CN210451756 U CN 210451756U
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Abstract
The utility model provides a high accuracy workpiece machining's comprehensive swivel work head, include: a rotary table, the rotary part of which can rotate 180 degrees relative to the fixed part; a first process clamping unit arranged on one working surface of the rotating part and used for fixing the workpiece on a first station so as to process a processing reference surface of a clamping lug part of the workpiece; the station through groove is a hollow part penetrating through the front side and the back side of the rotating part; the second procedure clamping unit is arranged on one working surface of the rotating part and used for clamping and fixing the clamping lug part of the workpiece so that the front and back high-precision processing surfaces of the workpiece are completely positioned in the station through groove to process the front and back high-precision processing surfaces of the workpiece; and a third process clamping unit arranged on a working surface of the rotating part and used for fixing the workpiece on a third station so as to cut off the clamping lug part of the workpiece. The utility model discloses a realize that high accuracy workpiece machining provides a whole solution.
Description
Technical Field
The utility model relates to a machining's appurtenance, in particular to synthesize swivel work head for machining high accuracy work piece.
Background
Machining is short for machining and refers to a machining process for removing materials through mechanical precision machining. The mechanical processing mainly comprises two types of manual processing and numerical control processing. Manual machining refers to a method in which a machinist manually operates mechanical equipment such as a milling machine, a lathe, a drilling machine, and a sawing machine to machine various materials. The manual machining is suitable for small-batch and simple part production. Numerical control machining (CNC) refers to a machine worker machining by using numerical control equipment, which includes a machining center, a turning and milling center, a wire electric discharge machine, a thread cutting machine, and the like. Most machining workshops adopt numerical control machining technology. The position coordinates (X, Y, Z) of the workpiece in the Cartesian coordinate system are converted into a program language by programming, and a CNC controller of the numerically controlled machine controls the axes of the numerically controlled machine by recognizing and interpreting the program language, automatically removing material as required, and thereby obtaining a finished workpiece. The numerical control machining processes the workpiece in a continuous mode and is suitable for large-batch parts with complex shapes.
As shown in fig. 1 to 1b, the machined workpiece 200 has a structure in which the machining accuracy of the front surface 201 and the back surface 202 is required to be 0.02mm in parallelism and 0.005mm in perpendicularity, and thus is a high-accuracy machined workpiece. However, the high-precision workpiece is difficult to machine by adopting numerical control machining at present because when a workpiece is machined by a numerical control machine tool, the workpiece is fixed on the table top of a workbench below a cutter through a clamp, when one machined surface (such as the front surface 201) of the workpiece is machined, the other machined surface (such as the back surface 202) of the workpiece needs to be detached from the clamp and clamped again for machining, namely, when the other machined surface is machined, the workpiece needs to be detached and clamped once, the table top is used as a machining reference surface for machining each time, and the particle size of dust is generally between 1 and 200 mu m and is coincident with or close to 0.02mm and 0.005mm, so that the cleanliness of the table top is difficult to meet the requirement, and as long as one piece of dust exists on the table top, the displacement caused by clamping again can be caused, or the quantity of the dust remained on the table top is changed, the processing precision of the other surface can be influenced, so that the parallelism and the verticality of the two processing planes can not meet the precision requirement. This has become a difficult dilemma for many machining enterprises to overcome.
Disclosure of Invention
The to-be-solved technical problem of the utility model lies in providing a high accuracy workpiece machining's comprehensive swivel work head, can arrange a plurality of machining-position and realize a plurality of manufacturing procedure on a workstation to realize the integrated processing of high accuracy work piece, provide a whole solution for realizing high accuracy workpiece machining.
The utility model discloses a realize like this: a comprehensive rotary table for high precision workpiece machining comprising:
the fixing part is fixedly connected with a machine table of the processing machine tool;
a rotating part which can rotate 180 degrees relative to the fixed part and is connected with the fixed part;
a first process clamping unit arranged on one working surface of the rotating part and used for fixing the workpiece on a first station so as to process a processing reference surface of a clamping lug part of the workpiece;
the station through groove is a hollow part penetrating through the front side and the back side of the rotating part;
the second procedure clamping unit is arranged on one working surface of the rotating part and used for clamping and fixing the clamping lug part of the workpiece so that the front and back high-precision processing surfaces of the workpiece are completely positioned in the station through groove to process the front and back high-precision processing surfaces of the workpiece; and
and the third procedure clamping unit is arranged on a working surface of the rotating part and used for fixing the workpiece on a third station so as to cut off the clamping lug part of the workpiece.
Preferably, according to an embodiment of the present invention, the first process clamping unit further includes:
the plurality of limiting columns are dispersedly and fixedly arranged on the first station;
the first workpiece positioning unit comprises a fixed side positioning part and an elastic side positioning part, and the fixed side positioning part and the elastic side positioning part are respectively positioned at two end parts of the first station; and
and the plurality of top surface pressing devices are distributed on the periphery of the first station.
Preferably, according to an embodiment of the present invention, the top surface pressing device further includes:
the first supporting base is arranged on a working surface of the rotating part and is positioned on the periphery of the first station;
the first limiting screw is fixed between the first supporting base and the first station;
the first locking nut is screwed on the first limiting screw;
the first compression spring is sleeved on the first limiting screw; and
the first pressing block is provided with a long groove, is sleeved on the first limiting screw through the long groove and is positioned above the first compression spring, when the first pressing block is locked by the first locking nut, the front end presses the workpiece on the first station, and the rear end is supported by the first supporting base.
Preferably, according to the present invention, the first compressing block has a straight-line structure or a T-shaped structure.
Preferably, according to an embodiment of the present invention, the second process clamping unit further includes a plurality of ear clamping devices, and any one of the ear clamping devices includes:
the limiting base is fixed at the edge of the station through groove and is provided with a clamping surface, and the flatness of the clamping surface is higher than or equal to the flatness precision requirement of the processing surface of the workpiece;
the second supporting base is fixed at the rear end of the limiting base;
the second limiting screw is fixed between the limiting base and the second supporting base;
the second lock nut is screwed on the second limit screw;
the second compression spring is sleeved on the second limiting screw; and
and the second pressing block is provided with an elongated groove, is sleeved on the second limiting screw through the elongated groove and is positioned above the second compression spring, when the second pressing block is locked by a second lock nut, the front end presses the processing reference surface of the clamping lug part of the workpiece on the limiting base, and the rear end is supported by the second supporting base.
Preferably, according to an embodiment of the present invention, the third process clamping unit further includes:
the heightening pedestal has the same outer contour as the outer contour of the workpiece and is fixedly arranged on the third station;
the positioning stud is fixedly arranged on the heightening pedestal;
the third lock nut is screwed on the positioning stud;
and the upper cover is pressed, the outer contour of the upper cover is the same as that of the workpiece, and the upper cover is sleeved on the two positioning studs, and when the positioning studs are locked by a third locking nut, the upper cover is pressed and covers the workpiece, and only the clamping lug parts of the workpiece are reserved.
The utility model has the advantages that: the utility model discloses a synthesize and be provided with three station to three process on the swivel work head, provide a whole solution for realizing high accuracy workpiece machining. The clamping unit is arranged on each station, a first procedure is carried out on the first station, namely, a processing reference surface of a clamping lug part of the workpiece is processed, a second procedure is carried out on a second station so as to process front and back high-precision processing surfaces of the workpiece, a third procedure is carried out on a third station, the clamping lug part is cut off, and the whole procedure of the high-precision processing surface of the workpiece is completed. Because the second station is a station through groove, the rotary worktable capable of overturning 180 degrees is combined, when the first machined surface of the machined workpiece is not required to be disassembled and re-clamped, the rotary worktable is only required to be overturned for 180 degrees, the cutter can continue to machine the second machined surface through the station through groove, and the parallelism and the verticality of the machined second machined surface can be fully ensured to meet the precision requirement because the disassembly and the re-clamping are not involved between the two machined surfaces.
Drawings
The invention will be further described with reference to the following examples with reference to the accompanying drawings.
Fig. 1, 1a and 1b are schematic structural diagrams of a front side, a back side and an axial cross section of a high-precision workpiece, respectively.
Fig. 2 is the overall structure schematic diagram of the comprehensive rotary worktable of the utility model.
Fig. 3 is a schematic view of the three-dimensional structure of the integrated rotary worktable during front machining.
Fig. 4 is a schematic view of the overlooking structure of the integrated rotary worktable during front machining.
Fig. 5 is a schematic view of the top view structure of the integrated rotary worktable during reverse processing.
Detailed Description
Before explaining the specific embodiments of the present invention, the overall inventive concept of the present invention is simply handed over, and the reason that high precision processing cannot be realized at present is mainly that the reference surface of processing is changed by adopting multiple clamping (mainly, cleanliness in the processing environment cannot meet the requirement, and tiny particles such as dust can affect the reference surface of processing no matter how careful). Therefore, only the clamping is reduced, and the reference surface is not changed when the front surface and the back surface are processed. And the utility model discloses it is main exactly to lead to the groove through swivel work head station, combines the swivel work head that can overturn 180 degrees, and when the first machined surface of the work piece of processing, need not to dismantle and clamping once more, only need overturn 180 degrees with swivel work head, the cutter can be used to see through the station and lead to the groove and continue to process the second machined surface promptly, owing to do not relate to between two machined surfaces of processing and dismantle and clamping once more, consequently can fully guarantee the depth of parallelism and the straightness that hangs down after the second machined surface processes and reach the required precision.
Referring to fig. 2 and 5, the integrated rotary table for high-precision workpiece machining according to the present invention includes:
a fixing part 12 fixedly connected to a machine table (not shown) of a machine tool (numerical control machine);
a rotating part 11 connected to the fixed part 12 via a rotating shaft 13 so as to be rotatable 180 degrees with respect to the fixed part 12;
a first step clamping unit 2 provided on one working surface 112 of the rotating portion 11 and configured to fix a workpiece to a first station G1 to machine a machining reference surface 204 of a clamping lug 203 of the workpiece 200;
a station through groove 3 which is a hollow portion penetrating the front and back surfaces of the rotating portion 11 and serves as a second station G2 for performing a second process;
a second step clamping unit 4 provided on one working surface 112 of the rotating portion 11 for clamping and fixing the clamping lug portion 203 of the workpiece 200 and then completely positioning the front and back high-precision machined surfaces 201 and 202 of the workpiece 200 within the station through groove 3 to machine the front and back high-precision machined surfaces of the workpiece 200; and
and a third step clamping unit 5 provided on the one working surface 112 of the rotating portion 11, for fixing the workpiece 200 to a third station G3 to cut out the clamping lug portion 203 of the workpiece.
In an embodiment of the present invention, the first process clamping unit 2 further includes:
a plurality of limiting columns 21 which are dispersedly and fixedly arranged on the first station;
a first workpiece positioning unit 22, including a fixed side positioning portion 221 and an elastic side positioning portion 222, where the fixed side positioning portion 221 and the elastic side positioning portion 222 are respectively located at two end portions of the first station G1; and
a plurality of top surface pressing devices 23 distributed around the periphery of the first station, wherein, as shown in fig. 2 and 3, the top surface pressing devices 23 may further include:
a first support base 231 provided on a working surface 112 of the rotating portion 11 and located around a first station G1;
a first limit screw 232 fixed between the first limit support base 231 and the first station G1;
a first lock nut 233 screwed on the first limit screw 232;
a first compression spring 234 sleeved on the first limit screw 232; and
the first pressing block 235 has an elongated slot 2352, and is sleeved on the first limiting screw 232 through the elongated slot 2352 and located above the first compression spring 234, when the first pressing block is locked by the first lock nut 233, the front end presses the workpiece to the first station G1, and the rear end is supported by the first support base 231. The first compressing block 235 is of a linear structure or a T-shaped structure, and the compressing block of the T-shaped structure has a larger acting area.
In an embodiment of the present invention, the second process clamping unit 4 further includes a plurality of ear clamping devices 42, and any one of the ear clamping devices 42 includes:
the limiting base 421 is fixed on the edge of the station through groove 3;
a second supporting base 422 fixed to the rear end of the position restricting base 421;
a second stopper screw 423 fixed between the stopper base 421 and the second support base 422;
a second lock nut 424 screwed on the second limit screw 423;
a second compression spring 425 sleeved on the second limit screw 423; and
the second pressing block 426 has an elongated slot 4262, and is sleeved on the second limiting screw 423 through the elongated slot 4262 and located above the second compression spring 425, when the second pressing block is locked by the second lock nut 424, the front end presses the processing reference surface 204 of the clamping ear 203 of the workpiece 200 against the limiting base, and the rear end is supported by the second supporting base 422.
In an embodiment of the present invention, the third process clamping unit 5 further includes:
a raising pedestal 51 having an outer contour identical to that of the workpiece 200 and fixed to the third station G3;
a positioning stud 52 fixedly arranged on the raising pedestal 51;
a third lock nut 53 screwed on the positioning stud 52;
the upper pressing cover 54 has the same outer contour as that of the workpiece 200, is sleeved on the two positioning studs 52, and presses and covers the upper side of the workpiece 200 when being locked by the third locking nut 53, and only leaves the clamping lug part 203 of the workpiece 200.
The utility model discloses a theory of operation lies in:
1. processing a profile for processing the workpiece 200 into a basic shape in advance, and additionally processing a plurality of clamping lug parts 203;
2. fixing the section bar on a first station G1 through a first process clamping unit 2, keeping clamping lug parts 203 exposed during clamping, then milling the front surfaces of all the clamping lug parts 203 to be flat to serve as processing reference surfaces 204, and ensuring the flatness of the processing reference surfaces 204 of all the clamping lug parts 203 to be equal to 0.01mm at the moment, so that the flatness of front and back high-precision processing surfaces of a workpiece processed on the basis of the processing reference surfaces 204 is ensured to be 0.02 mm;
3. the first procedure clamping unit 2 is opened, the section is taken out to move to a second station G2, namely, the section is located in the station through groove 3, then the second procedure clamping unit 4 is used for clamping the section, all machining reference surfaces 204 of the clamping lug part 203 of the section need to be attached to the limiting base 21 downwards during clamping, each pressing block 23 is locked through a locking nut 24 after being in place, and at the moment, the front high-precision machining surface and the back high-precision machining surface of the section are located right above the station through groove 3.
4. And (3) allowing a cutter of the numerical control machine tool to be in place, finishing the front surface 201 of the workpiece 200, turning the rotating part 11 of the rotating workbench 1 for 180 degrees relative to the fixing part 12, and continuously processing the back surface 202 of the workpiece 200 until the planeness and the verticality reach 0.02mm of preset requirements.
5. And (3) detaching the workpiece 200 with the processed front and back surfaces from the second process clamping unit 4, moving the workpiece to a third station G3, clamping the workpiece 200 by using the third process clamping unit 5 to expose the clamping lug part 203, and cutting off the clamping lug part 203 by using a tool of the numerical control machine.
To sum up, the utility model discloses a be provided with three station on synthesizing swivel work head, set up a centre gripping unit on every station, carry out first process at first station, process out the processing reference surface of the centre gripping ear of work piece promptly, carry out the second process on the second position to the positive and negative two high accuracy machined surface of processing work piece carries out the third process on the third station, excises the centre gripping ear, accomplishes the whole process of the high accuracy machined surface of work piece. Because the second station is the logical groove of station, combine the swivel work head that can overturn 180 degrees, when the first machined surface of the work piece of processing, need not to dismantle and clamping once more, only need to overturn 180 degrees swivel work head, the cutter can be used to see through the logical groove of station and continue processing the second machined surface, because do not involve dismantling and clamping once more between two machined surfaces of processing, consequently its processing reference surface can not receive the influence of dust etc. to can fully guarantee the depth of parallelism and the straightness that hangs down after the second machined surface processing and reach the required precision.
Although specific embodiments of the present invention have been described, it will be understood by those skilled in the art that the specific embodiments described are illustrative only and are not limiting upon the scope of the invention, and that equivalent modifications and variations can be made by those skilled in the art without departing from the spirit of the invention, which is to be limited only by the claims appended hereto.
Claims (6)
1. The utility model provides a high accuracy workpiece machining's comprehensive swivel work head which characterized in that: the method comprises the following steps:
the fixing part is fixedly connected with a machine table of the processing machine tool;
a rotating part which can rotate 180 degrees relative to the fixed part and is connected with the fixed part;
a first process clamping unit arranged on one working surface of the rotating part and used for fixing the workpiece on a first station so as to process a processing reference surface of a clamping lug part of the workpiece;
the station through groove is a hollow part penetrating through the front side and the back side of the rotating part;
the second procedure clamping unit is arranged on one working surface of the rotating part and used for clamping and fixing the clamping lug part of the workpiece so that the front and back high-precision processing surfaces of the workpiece are completely positioned in the station through groove to process the front and back high-precision processing surfaces of the workpiece; and
and the third procedure clamping unit is arranged on a working surface of the rotating part and used for fixing the workpiece on a third station so as to cut off the clamping lug part of the workpiece.
2. A high precision workpiece machining integrated rotary table as claimed in claim 1 wherein: the first process clamping unit further includes:
the plurality of limiting columns are dispersedly and fixedly arranged on the first station;
the first workpiece positioning unit comprises a fixed side positioning part and an elastic side positioning part, and the fixed side positioning part and the elastic side positioning part are respectively positioned at two end parts of the first station; and
and the plurality of top surface pressing devices are distributed on the periphery of the first station.
3. A high precision workpiece machining integrated rotary table as claimed in claim 2 in which: the top surface pressing device further comprises:
the first supporting base is arranged on a working surface of the rotating part and is positioned on the periphery of the first station;
the first limiting screw is fixed between the first supporting base and the first station;
the first locking nut is screwed on the first limiting screw;
the first compression spring is sleeved on the first limiting screw; and
the first pressing block is provided with a long groove, is sleeved on the first limiting screw through the long groove and is positioned above the first compression spring, when the first pressing block is locked by the first locking nut, the front end presses the workpiece on the first station, and the rear end is supported by the first supporting base.
4. A high precision workpiece machining integrated rotary table as claimed in claim 3 wherein: the first pressing block is of a linear structure or a T-shaped structure.
5. A high precision workpiece machining integrated rotary table as claimed in claim 1 wherein: the second process clamping unit further comprises a plurality of ear clamping devices, any of the ear clamping devices comprising:
the limiting base is fixed at the edge of the station through groove and is provided with a clamping surface, and the flatness of the clamping surface is higher than or equal to the flatness precision requirement of the processing surface of the workpiece;
the second supporting base is fixed at the rear end of the limiting base;
the second limiting screw is fixed between the limiting base and the second supporting base;
the second lock nut is screwed on the second limit screw;
the second compression spring is sleeved on the second limiting screw; and
and the second pressing block is provided with an elongated groove, is sleeved on the second limiting screw through the elongated groove and is positioned above the second compression spring, when the second pressing block is locked by a second lock nut, the front end presses the processing reference surface of the clamping lug part of the workpiece on the limiting base, and the rear end is supported by the second supporting base.
6. A high precision workpiece machining integrated rotary table as claimed in claim 1 wherein: the third process clamping unit further includes:
the heightening pedestal has the same outer contour as the outer contour of the workpiece and is fixedly arranged on the third station;
the positioning stud is fixedly arranged on the heightening pedestal;
the third lock nut is screwed on the positioning stud;
and the upper cover is pressed, the outer contour of the upper cover is the same as that of the workpiece, and the upper cover is sleeved on the two positioning studs, and when the positioning studs are locked by a third locking nut, the upper cover is pressed and covers the workpiece, and only the clamping lug parts of the workpiece are reserved.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921323170.8U CN210451756U (en) | 2019-08-14 | 2019-08-14 | Comprehensive rotary workbench for machining high-precision workpiece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921323170.8U CN210451756U (en) | 2019-08-14 | 2019-08-14 | Comprehensive rotary workbench for machining high-precision workpiece |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210451756U true CN210451756U (en) | 2020-05-05 |
Family
ID=70451558
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921323170.8U Expired - Fee Related CN210451756U (en) | 2019-08-14 | 2019-08-14 | Comprehensive rotary workbench for machining high-precision workpiece |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210451756U (en) |
-
2019
- 2019-08-14 CN CN201921323170.8U patent/CN210451756U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200505 Termination date: 20210814 |