A kind of CNC machined grooves special fixture and clamping method
Technical field
The present invention relates to mechanical manufacturing field, relate in particular to a kind of CNC machined grooves special fixture and clamping method.
Background technology
Fixture pattern early, mainly by three width movable clamp ports with determine jaw and form, pattern is simpler and easy.The defect that this type exists is: complete processing and need to change three width fixtures, cause processing more time-consuming.Workpiece size is larger, is difficult for location and processing plane degree stable, and groove exists processing difficulties.
Summary of the invention
The present invention aims to provide a kind of CNC machined grooves special fixture and clamping method that planeness of workpiece is stable, solve the difficult problem of Pocket Machining simultaneously of controlling.
For realizing above-mentioned technical purpose, the present invention by the following technical solutions, a kind of CNC machined grooves special fixture, comprise underframe and fixture mainboard, described underframe is " protruding " shape underframe, one epitaxial lateral overgrowth of the bossing in the middle of underframe is stretched formation gripper shoe, the side of bossing opposite side is provided with fixture mainboard, fixture mainboard is fixed on the side of underframe bossing by 5 M12 fixed screws, fixture mainboard is "T"-shaped mainboard, fixture also comprises fixed cell and positioning unit, fixed cell is provided with three, fixed cell specifically comprises briquetting and M10 fixed screw, briquetting is fixed on underframe by M10 fixed screw, wherein two fixed cells are located on the underframe of "T"-shaped mainboard vertical component one side, and these two fixed cells are positioned at same vertical line, another fixed cell is located on the underframe of vertical component opposite side, the higher fixed cell of this fixed cell and opposite side is in same level line, described positioning unit is provided with three, positioning unit specifically comprises two alignment pins, two D8 abnormity alignment pins are located on the underframe of T-shape mainboard vertical component lower position, two D8 abnormity alignment pins are positioned at sustained height and the centre position in underframe, two D8 alignment pins are located at the side of "T"-shaped mainboard vertical component, two D8 alignment pins are positioned at same vertical line, and two D6 alignment pins are located at respectively on two diagonal angles of "T"-shaped mainboard horizontal component.
CNC machined grooves clamping method in the present invention, comprises the following steps:
1) Pocket Machining, workpiece to be processed is placed on to the vertical component of fixture mainboard, workpiece lower end props up two D8 abnormity alignment pins, the side of workpiece props up two D8 alignment pins, subsequently three briquettings are pressed on workpiece, tighten M10 fixed screw, complete the clamping to workpiece, by lathe, complete the Pocket Machining to workpiece subsequently;
2) processing in the groove of front, completing steps 1) after, take out workpiece, workpiece is placed on to the horizontal component of fixture mainboard, two D6 alignment pins of the locating hole line-up jig mainboard horizontal component of workpiece are put into, and complete location, and two briquettings near workpiece are pressed on workpiece, tighten M10 fixed screw, complete the clamping to workpiece, by lathe, completed processing in the front groove of workpiece subsequently;
3) processing in reverse side groove, completing steps 2) after, take out workpiece, to after workpiece turning, be placed on the horizontal component of fixture mainboard, two D6 alignment pins of the locating hole line-up jig mainboard horizontal component of workpiece are put into, and complete location, and two briquettings near workpiece are pressed on workpiece, tighten M10 fixed screw, complete the clamping to workpiece, by lathe, completed processing in the front groove of workpiece subsequently.
In order to solve fixture early, need to change three width fixtures and complete that the processing that processing causes is more time-consuming, the unsettled problem of processing dimension.The present invention has adjusted global design and the locate mode of fixture, by the positioning combination of hole and profile on a sub-folder tool, on same sub-folder tool, complete the processing of three process, the locate mode in hole is to adopt two alignment pins that are positioned at diagonal angle to complete, during Pocket Machining, workpiece to be processed is placed on to the vertical component of fixture mainboard, workpiece lower end props up two D8 abnormity alignment pins, the side of workpiece props up two D8 alignment pins, subsequently three briquettings are pressed on workpiece, tighten M10 fixed screw, complete the clamping to workpiece, in groove, add and man-hour workpiece is placed on to the horizontal component of fixture mainboard, two D6 alignment pins of the locating hole line-up jig mainboard horizontal component of workpiece are put into, complete location, and two briquettings near workpiece are pressed on workpiece, tighten M10 fixed screw, complete the clamping to workpiece, well to have controlled the flatness of workpiece man-hour stable adding like this, solved the difficulty processing of groove simultaneously, machining accuracy and production efficiency have been improved.
Accompanying drawing explanation
Above-mentioned and/or additional aspect of the present invention and advantage accompanying drawing below combination obviously and is easily understood becoming the description of embodiment, wherein:
Fig. 1 is the structural representation of the embodiment of the present invention.
In figure: 1, underframe; 2, fixture mainboard; 3, D6 alignment pin; 4, M10 fixed screw; 5, briquetting; 6, M12 fixed screw; 7, D8 abnormity alignment pin; 8, D8 alignment pin.
The specific embodiment
Describe embodiments of the invention below in detail, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has the element of identical or similar functions from start to finish.Below by the embodiment being described with reference to the drawings, be exemplary, only for explaining the present invention, and can not be interpreted as limitation of the present invention.
In description of the invention, unless otherwise prescribed and limit, it should be noted that, term " installation ", " being connected ", " connection " should be interpreted broadly, for example, can be mechanical connection or electrical connection, can be also the connection of two element internals, can be to be directly connected, also can indirectly be connected by intermediary.For the ordinary skill in the art, can understand as the case may be the concrete meaning of above-mentioned term.
Below with reference to Fig. 1, describe according to the CNC machined grooves special fixture of the embodiment of the present invention.A kind of CNC machined grooves special fixture, comprise underframe 1 and fixture mainboard 2, described underframe 1 is " protruding " shape underframe, one epitaxial lateral overgrowth of the bossing in the middle of underframe 1 is stretched formation gripper shoe, the side of bossing opposite side is provided with fixture mainboard 2, fixture mainboard 2 is fixed on the side of underframe 1 bossing by 5 M12 fixed screws 6, fixture mainboard 2 is "T"-shaped mainboard, fixture also comprises fixed cell and positioning unit, fixed cell is provided with three, fixed cell specifically comprises briquetting 5 and M10 fixed screw 4, briquetting 5 is fixed on underframe 1 by M10 fixed screw 4, wherein two fixed cells are located on the underframe 1 of "T"-shaped mainboard 2 vertical component one sides, and these two fixed cells are positioned at same vertical line, another fixed cell is located on the underframe 1 of vertical component opposite side, the higher fixed cell of this fixed cell and opposite side is in same level line, described positioning unit is provided with three, positioning unit specifically comprises two alignment pins, two D8 abnormity alignment pins 7 are located on the underframe 1 of T-shape mainboard 2 vertical component lower positions, two D8 abnormity alignment pins 7 are positioned at sustained height and the centre position in underframe 1, two D8 alignment pins 8 are located at the side of "T"-shaped mainboard 2 vertical components, two D8 alignment pins 8 are positioned at same vertical line, and two D6 alignment pins 3 are located at respectively on two diagonal angles of "T"-shaped mainboard 2 horizontal components.
CNC machined grooves clamping method in the present invention, comprises the following steps:
1) Pocket Machining, workpiece to be processed is placed on to the vertical component of fixture mainboard 2, workpiece lower end props up two D8 abnormity alignment pins 7, the side of workpiece props up two D8 alignment pins 8, subsequently three briquettings 5 are pressed on workpiece, tighten M10 fixed screw 4, complete the clamping to workpiece, by lathe, complete the Pocket Machining to workpiece subsequently;
2) processing in the groove of front, completing steps 1) after, take out workpiece, workpiece is placed on to the horizontal component of fixture mainboard 2, two D6 alignment pins 3 of locating hole line-up jig mainboard 2 horizontal components of workpiece are put into, and complete location, and two briquettings 5 near workpiece are pressed on workpiece, tighten M10 fixed screw 4, complete the clamping to workpiece, by lathe, completed processing in the front groove of workpiece subsequently;
3) processing in reverse side groove, completing steps 2) after, take out workpiece, to after workpiece turning, be placed on the horizontal component of fixture mainboard 2, two D6 alignment pins 3 of locating hole line-up jig mainboard 2 horizontal components of workpiece are put into, and complete location, and two briquettings 5 near workpiece are pressed on workpiece, tighten M10 fixed screw 4, complete the clamping to workpiece, by lathe, completed processing in the front groove of workpiece subsequently.
In order to solve fixture early, need to change three width fixtures and complete that the processing that processing causes is more time-consuming, the unsettled problem of processing dimension.The present invention has adjusted global design and the locate mode of fixture, by the positioning combination of hole and profile on a sub-folder tool, on same sub-folder tool, complete the processing of three process, the locate mode in hole is to adopt two alignment pins that are positioned at diagonal angle to complete, during Pocket Machining, workpiece to be processed is placed on to the vertical component of fixture mainboard, workpiece lower end props up two D8 abnormity alignment pins, the side of workpiece props up two D8 alignment pins, subsequently three briquettings are pressed on workpiece, tighten M10 fixed screw, complete the clamping to workpiece, in groove, add and man-hour workpiece is placed on to the horizontal component of fixture mainboard, two D6 alignment pins of the locating hole line-up jig mainboard horizontal component of workpiece are put into, complete location, and two briquettings near workpiece are pressed on workpiece, tighten M10 fixed screw, complete the clamping to workpiece, well to have controlled the flatness of workpiece man-hour stable adding like this, solved the difficulty processing of groove simultaneously, machining accuracy and production efficiency have been improved.
In the description of this description, the description of reference term " embodiment ", " example " or " some examples " etc. means to be contained at least one embodiment of the present invention or example in conjunction with specific features, structure, material or the feature of this embodiment or example description.In this manual, the schematic statement of above-mentioned term is not necessarily referred to identical embodiment or example.And the specific features of description, structure, material or feature can be with suitable mode combinations in any one or more embodiment or example.
Although illustrated and described embodiments of the invention, those having ordinary skill in the art will appreciate that: in the situation that not departing from principle of the present invention and aim, can carry out multiple variation, modification, replacement and modification to these embodiment, scope of the present invention is limited by claim and equivalent thereof.