CN204913405U - A manual compressing tightly and pneumatic positioning fixture for milling machine - Google Patents

Abstract

A manual compressing tightly and pneumatic positioning fixture for milling machine, including establishing the bottom plate on the workstation, the bottom plate front side is equipped with the riser perpendicularly, and the riser leading flank rotates through the cylindric lock and is connected with the graduated disk, follows the circumference orientation on the graduated disk and evenly is equipped with four locating holes, is equipped with on the riser to correspond the diamond pin who pegs graft with four locating holes respectively, is equipped with manual hold -down mechanism between riser and the graduated disk, the graduated disk leading flank is equipped with the mounting panel, and the mounting panel right side is equipped with the insalling stud with the concentricity line of cylindric lock, and the last threaded connection of insalling stud has fastening nut, and the mounting panel right side is equipped with the pneumatic positioning mechanism who is located insalling stud top and below respectively. The utility model discloses only need alright the processing in order to accomplish a plurality of machined surfaces of clamping, work efficiency has obtained great improvement, and the machining precision has also obtained the assurance in addition, to workman's the operation requirement also corresponding degree of difficulty that has reduced.

Description

For manual compression and the pneumatic positioning fixture of milling machine

Technical field

The utility model belongs to machining manufacturing technology field, particularly relates to a kind of manual compression for milling machine and pneumatic positioning fixture.

Background technology

In field of machining, the fixture that most milling machine machining adopts is all too single, clamping once can only be processed a face, multiple clamping is carried out when adding man-hour requirement to multiple face, can workload be increased like this, reduce operating efficiency and affect machining accuracy, high to the operation requirements of workman, and common fixture is when clamping workpiece in irregular shape especially non-round surface, after the very difficult or clamping of clamping, be not easy to processing.For a kind of bracket part that aerospace industry uses, the blank of this bracket part comprises two pieces of arcs that the matrix of cylindrical mechanism and symmetry are located at matrix one end sidepiece, matrix at one end axially offers screwed hole in arc institute, matrix after this bracket part processes is four-prism shape, and base circumferential face is added adopt man-hour plain clamp to be difficult to clamping, and add the structure that columniform matrix is processed into a four-prism by man-hour, and precision prescribed is very high, need processing multiple, when carrying out multiple clamping, precision will reduce, do not meet the demands, existing fixture can not meet the process requirements of this bracket part.

Utility model content

The utility model is solve the weak point that prior art exists, and provides that a kind of Milling Process scope is wide, clamped one time can complete the processing of multiple, improve working (machining) efficiency and the high manual compression for milling machine of machining accuracy and pneumatic positioning fixture.

For solving the problems of the technologies described above, the technical scheme that the utility model adopts is as follows: for manual compression and the pneumatic positioning fixture of milling machine, comprise base plate, vertically riser is provided with on front side of base plate, tilt prop is provided with between plate upper surface and riser rear surface, riser leading flank is rotatably connected to circular index dial by straight pin, on index dial, circumferentially direction is evenly provided with four locating holes, riser be provided with can respectively with the rhombus pin of four corresponding grafting of locating hole, rhombus pin rear end is provided with the handle be positioned on rear side of riser, three manual hold-down mechanisms are at least provided with between riser and index dial,

Manual hold-down mechanism comprises pressing plate, compression bearing pin and hold-down bolt and clamp nut, pressing plate is rotatably connected on riser by compressing bearing pin, hold-down bolt is located on riser, the edge of side compression index dial front surface in pressing plate, hold-down bolt to be located on riser and between compression bearing pin and index dial, hold-down bolt is forward through pressing plate, and hold-down bolt nose threads is connected with clamp nut pressing plate being pressed index dial;

Index dial leading flank is fixedly connected with installing plate by construction bolt, the installation stud of the concentricity line with straight pin is provided with on the right side of installing plate, installation stud has been threaded clamp nut, clamp nut periphery circumferentially direction is evenly provided with a circle thrusting groove, is provided with the pneumatic positioning mechanism laying respectively at and install above and below stud on the right side of installing plate;

Pneumatic positioning mechanism comprises connecting plate, positioning cylinder, location deckle board and bolt, the back side edge of connecting plate is along fixedly establishing on a mounting board, the inner side edge of connecting plate is fixedly connected with along with installation stud rear portion circumferential surface, positioning cylinder is fixedly located on connecting plate along the longitudinal direction, location deckle board is all uncovered trench structure in front end, top and bottom, the pull bar front end of positioning cylinder is fixedly connected with location deckle board rear end face, bolt is threaded in deckle board right side, location, and bolt left end extend into locates in deckle board and is connected with antiskid wear-resistance backing board.

Adopt technique scheme, the course of work of the present utility model is as follows: first base plate of the present utility model is located on the workbench of milling machine by connecting bolt, screwed hole on the matrix of bracket part blank is screwed to and installs on stud, positioning cylinder drives location deckle board to be entered into by two of bracket part arcs in the deckle board of location, after using dial gauge centering two arc positions, spanner is used to turn bolt, anti-skid wearable pad appropriateness is made to compress arc, rotate the rear end face that clamp nut compresses matrix again, due to this place's narrow space, use the boosting-rod of L-type to be inserted in thrusting groove and tighten the firm detent bracket part blank of clamp nut more further.After completing location, open milling machine, milling cutter rotates, and the height of adjustment workbench is laggard to be given, on the complete base circumferential of milling after a plane, use spanner to unscrew clamp nut, operating grip makes rhombus pin extract out, rotates clockwise 90 °, again rhombus pin is inserted in the locating hole on index dial, the clamp nut that makes to screw up with a wrench makes pressing plate press index dial, and then Feed table, carries out milling operation to the second plane on base circumferential.After milling completes, then repeat twice above-mentioned action step, until base circumferential surface is quadrangular shape by milling.Unclamp clamp nut and bolt, the pull bar simultaneously manipulating positioning cylinder shrinks, and location deckle board moves away arc backward, unloads bottom bracket part, then carries out the milling operation of next bracket part blank.

Index dial in the utility model can rotate at riser right flank, index dial even circumferential arranges four locating holes, rhombus latch coordinates realization location through the cylindrical hole on riser and the locating hole on index dial, and use pressing plate to compress index dial, index dial can not be rotated in the process of processing, precision will be ensured like this, index dial is fixedly connected with by construction bolt with installing plate, index dial can drive bracket part together to rotate by installing plate when rotating, the utility model utilizes the screwed hole on bracket part blank to coordinate reach centralized positioning with installation stud, positioning cylinder drives location deckle board to be entered into by two of bracket part arcs in the deckle board of location, spanner is used to turn bolt, making anti-skid wearable pad appropriateness compress arc makes bracket part fix non rotating in a circumferential direction, matrix rear end face compresses and bracket part is located in the axial direction by clamp nut.Like this in the process of processing, bracket part can not loosen, and ensures machining accuracy.The inner side edge of connecting plate is fixedly connected with along with installation stud rear portion circumferential surface, can increase the bonding strength installing stud like this, ensure that installation stud and straight pin keep axiality.

In sum, the utility model is reasonable in design, structure is simple, be easy to operation, and only need clamped one time just can complete the processing of multiple machined surface, operating efficiency obtains and greatly improves, and machining accuracy have also been obtained guarantee, difficulty is also correspondingly reduced to the operation requirements of workman.

Accompanying drawing explanation

Fig. 1 is the structural representation that the utility model is arranged on milling machine;

Fig. 2 is the enlarged drawing of manually compression and pneumatic positioning fixture in Fig. 1;

Fig. 3 is A-A sectional view in Fig. 2;

Fig. 4 is the top view of locating deckle board in Fig. 2.

Detailed description of the invention

Below in conjunction with accompanying drawing, detailed description of the invention of the present utility model is described in further detail:

As shown in Figure 1, Figure 2, Figure 3 and Figure 4, the manually milling machine of compression and pneumatic positioning workpieces, comprise milling machine body 1, milling machine body 1 is existing mature technology, and concrete structure is not repeating.The workbench 2 of milling machine body 1 is provided with and manually compresses and pneumatic positioning fixture 3, manual compression and pneumatic positioning fixture 3 comprise the base plate 4 be located at by connecting bolt 30 on workbench 2, riser 5 is vertically provided with on front side of base plate 4, tilt prop 6 is provided with between base plate 4 upper surface and riser 5 rear surface, riser 5 leading flank is rotatably connected to circular index dial 8 by straight pin 7, on index dial 8, circumferentially direction is evenly provided with four locating holes 29, riser 5 be provided with can respectively with the rhombus pin 9 of four corresponding grafting of locating hole 29, rhombus pin 9 rear end is provided with the handle 10 be positioned on rear side of riser 5, three manual hold-down mechanisms 11 are at least provided with between riser 5 and index dial 8.

Manual hold-down mechanism 11 comprises pressing plate 12, compression bearing pin 13 and hold-down bolt 14 and clamp nut 15, pressing plate 12 is rotatably connected on riser 5 by compressing bearing pin 13, hold-down bolt 14 is located on riser 5, the edge of side compression index dial 8 front surface in pressing plate 12, hold-down bolt 14 to be located on riser 5 and between compression bearing pin 13 and index dial 8, hold-down bolt 14 is forward through pressing plate 12, and hold-down bolt 14 nose threads is connected with the clamp nut 15 pressing plate 12 being pressed index dial 8.

Index dial 8 leading flank is fixedly connected with installing plate 17 by construction bolt 16, the installation stud 18 with the concentricity line of straight pin 7 is provided with on the right side of installing plate 17, installation stud 18 has been threaded clamp nut 19, clamp nut 19 periphery circumferentially direction is evenly provided with a circle thrusting groove 20, is provided with the pneumatic positioning mechanism laying respectively at and install above and below stud 18 on the right side of installing plate 17.

Pneumatic positioning mechanism comprises connecting plate 21, positioning cylinder 22, location deckle board 23 and bolt 24, the back side edge of connecting plate 21 is along being fixedly located on installing plate 17, the inner side edge of connecting plate 21 is fixedly connected with along with installation stud 18 rear portion circumferential surface, positioning cylinder 22 is fixedly located on connecting plate 21 along the longitudinal direction, location deckle board 23 is front end, the trench structure that top and bottom are all uncovered, pull bar 31 front end of positioning cylinder 22 is fixedly connected with posting 23 plate rear end face, bolt 24 is threaded in deckle board 23 right side, location, bolt 24 left end extend into locates in deckle board 23 and is connected with antiskid wear-resistance backing board 25.

The course of work of the present utility model is as follows: be screwed to by the screwed hole on the matrix 26 of bracket part blank and install on stud 18, positioning cylinder 22 drives location deckle board 23 to be entered into by two of bracket part arcs 27 in the deckle board 23 of location, after using dial gauge centering two arc 27 positions, spanner is used to turn bolt 24, anti-skid wearable pad 25 appropriateness is made to compress arc 27, rotate the rear end face that clamp nut 19 compresses matrix 26 again, due to this place's narrow space, use the boosting-rod of L-type to be inserted in thrusting groove 20 and tighten the firm detent bracket part blank of clamp nut 19 more further.After completing location, open milling machine, milling cutter rotates, and the height of adjustment workbench 2 is laggard to be given, the complete matrix 26 of milling is circumferentially after a plane, use spanner to unscrew clamp nut 15, operating grip 10 makes rhombus pin 9 extract out, rotates clockwise 90 °, again rhombus pin 9 is inserted in the locating hole 29 on index dial 8, the clamp nut 15 that makes to screw up with a wrench makes pressing plate 12 press index dial 8, and then Feed table 2, carries out milling operation to matrix 26 the second plane circumferentially.After milling completes, then repeat twice above-mentioned action step, until matrix 26 circumferential surface is quadrangular shape by milling.Unclamp clamp nut 19 and bolt 24, the pull bar 31 simultaneously manipulating positioning cylinder 22 shrinks, and location deckle board 23 moves away arc 27 backward, unloads bottom bracket part, then carries out the milling operation of next bracket part blank.

The present embodiment not does any pro forma restriction to shape of the present utility model, material, structure etc.; every above embodiment is done according to technical spirit of the present utility model any simple modification, equivalent variations and modification, all belong to the protection domain of technical solutions of the utility model.

Claims (1)

1. for manual compression and the pneumatic positioning fixture of milling machine, it is characterized in that: comprise base plate, vertically riser is provided with on front side of base plate, tilt prop is provided with between plate upper surface and riser rear surface, riser leading flank is rotatably connected to circular index dial by straight pin, on index dial, circumferentially direction is evenly provided with four locating holes, riser be provided with can respectively with the rhombus pin of four corresponding grafting of locating hole, rhombus pin rear end is provided with the handle be positioned on rear side of riser, is at least provided with three manual hold-down mechanisms between riser and index dial;

Manual hold-down mechanism comprises pressing plate, compression bearing pin and hold-down bolt and clamp nut, pressing plate is rotatably connected on riser by compressing bearing pin, hold-down bolt is located on riser, the edge of side compression index dial front surface in pressing plate, hold-down bolt to be located on riser and between compression bearing pin and index dial, hold-down bolt is forward through pressing plate, and hold-down bolt nose threads is connected with clamp nut pressing plate being pressed index dial;

Index dial leading flank is fixedly connected with installing plate by construction bolt, the installation stud of the concentricity line with straight pin is provided with on the right side of installing plate, installation stud has been threaded clamp nut, clamp nut periphery circumferentially direction is evenly provided with a circle thrusting groove, is provided with the pneumatic positioning mechanism laying respectively at and install above and below stud on the right side of installing plate;

Pneumatic positioning mechanism comprises connecting plate, positioning cylinder, location deckle board and bolt, the back side edge of connecting plate is along fixedly establishing on a mounting board, the inner side edge of connecting plate is fixedly connected with along with installation stud rear portion circumferential surface, positioning cylinder is fixedly located on connecting plate along the longitudinal direction, location deckle board is all uncovered trench structure in front end, top and bottom, the pull bar front end of positioning cylinder is fixedly connected with location deckle board rear end face, bolt is threaded in deckle board right side, location, and bolt left end extend into locates in deckle board and is connected with antiskid wear-resistance backing board.