CN211841960U - Supporting jack for processing and aligning shell blank casting at four-axis processing center - Google Patents

Abstract

The invention discloses a supporting jack for processing and aligning a shell blank casting in a four-axis machining center, which solves the problem of low aligning work efficiency caused by the superposition of the central axis of the shell blank casting and the central axis of a rotary platform of the four-axis machining center when the shell blank casting is machined in the four-axis machining center without linkage. A hemispherical bulge (21) is arranged on the rotary bearing inner ring fixed seat (20), a hemispherical groove (24) is arranged at the center of the lower bottom surface of the square rotary seat (22), and a rotary bearing (28) is arranged between the rotary bearing outer ring fixed seat (25) and the rotary bearing inner ring fixed seat; the square rotating base on the outer side of the lead screw mounting groove (27) is provided with a horizontal lead screw mounting base (26) and a horizontal lead screw (31), the horizontal lead screw is screwed with a lead screw nut block, and the lead screw nut block is fixedly connected with a supporting jack. The alignment work efficiency is greatly improved.

Description

Supporting jack for processing and aligning shell blank casting at four-axis processing center

Technical Field

The invention relates to a supporting device for scribing and then machining a casting blank cavity, in particular to a jack supporting device for scribing and then machining an inner cavity structure and an outer cavity structure of a casing blank casting.

Background

Before machining the inner cavity and the outer cavity of the special-shaped shell blank casting, scribing the shell, and machining according to the scribing on the inner side wall and the outer side wall of the shell; the existing three-coordinate marking method is to determine a marking reference surface on a marking workbench, install a marking mechanism on the determined reference surface, then place the special-shaped shell blank casting on three jacks on the marking workbench, start to perform X-direction leveling and X-direction marking on the special-shaped shell blank casting by using the marking reference surface as a reference through the marking mechanism, finish X horizontal direction marking of all structures of the special-shaped shell blank casting, hang the special-shaped shell blank casting away from the jacks to rotate 90 degrees, then place the special-shaped shell blank casting on the three jacks again, start to perform Y-direction leveling and Y-direction marking on the special-shaped shell blank casting, after finishing Y-direction marking, before performing Z-direction marking, the special-shaped shell blank casting needs to be erected to perform Z-direction marking, because the reference surfaces of three coordinate systems need to be kept as the same marking reference, before a special-shaped shell blank casting needs to be erected, firstly drawing out the finished X-direction scribing lines and Y-direction scribing lines on two ports of a shell to the outer side of the shell to determine a center cross line; in the scribing process, the problem that the center cross line is inaccurate in determination often exists, so that the problem that products are scrapped due to the fact that the casting blank allowance is not appropriate after the casting is roughly milled according to the scribing is solved; when manual marking is finished, the shell blank casting with marked lines is placed in an unassociated four-axis machining center for machining, the central axis of the shell blank casting needs to be superposed with the central axis of a rotary platform of the unassociated four-axis machining center, accurate positioning and machining can be carried out, for the superposition of the two central axes, a marking mechanism is operated on site, the positioning in the X direction needs to be carried out firstly, the supporting jack needs to be moved repeatedly for many times, after the completion, the jack is moved to align and position the Y direction, the Y direction is repeatedly moved until alignment is carried out, because the alignment of three coordinates is based on the same positioning reference plane, when the alignment is transited from the alignment in the X direction to the alignment in the Y direction, the shell blank casting is subjected to the support jack knocking, the method can not quickly and accurately move the workpiece, greatly increases the workload of subsequent alignment work, and greatly reduces the efficiency of completing the alignment work of the superposition of two central lines.

Disclosure of Invention

The invention provides a supporting jack for processing and aligning a shell blank casting in a four-axis machining center, which solves the technical problem of low aligning work efficiency caused by the fact that the central axis of the shell blank casting is superposed with the central axis of a rotary platform of the non-linkage four-axis machining center when the shell blank casting is machined in the non-linkage four-axis machining center.

The invention solves the technical problems by the following technical scheme:

a supporting jack for processing and aligning a shell blank casting in a four-axis machining center comprises a square rotating seat supporting bottom support and a square rotating seat, wherein a rotating bearing inner ring fixing seat is fixedly arranged at the center of the top surface of the square rotating seat supporting bottom support, a hemispherical protrusion is arranged on the rotating bearing inner ring fixing seat, a hemispherical groove is arranged at the center of the lower bottom surface of the square rotating seat, a rotating bearing outer ring fixing seat is arranged in the hemispherical groove, the square rotating seat is sleeved on the hemispherical protrusion on the top surface of the square rotating seat supporting bottom support through the hemispherical groove, and a rotating bearing is arranged between the rotating bearing outer ring fixing seat and the rotating bearing inner ring fixing seat; the square rotary base is provided with a horizontal screw rod mounting seat, the horizontal screw rod mounting seat is provided with a horizontal screw rod, a screw rod nut block is screwed on the horizontal screw rod, and a support jack is fixedly connected to the screw rod nut block.

Four inverted T-shaped limit strip embedding bottom grooves are arranged on the top surface of the square rotating seat supporting bottom support and are arranged on the top surface of the square rotating seat supporting bottom support in a cross-shaped arrangement mode, four inverted T-shaped limit strip wedge-shaped embedding top grooves are arranged on the lower bottom surface of the square rotating seat, the four inverted T-shaped limit strip embedding bottom grooves and the four inverted T-shaped limit strip wedge-shaped embedding top grooves are correspondingly arranged, an inverted T-shaped limit strip is movably arranged between the inverted T-shaped limit strip embedding bottom groove and the inverted T-shaped limit strip wedge-shaped embedding top groove which are correspondingly arranged, a pair of top-connected springs are arranged in the inverted T-shaped limit strip embedded bottom groove, the top ends of the top-connected springs are abutted on the lower bottom surface of the inverted T-shaped limit strip, the upper top surface of the inverted T-shaped limiting strip is a wedge-shaped top surface, and the wedge-shaped top surface is movably matched with the wedge-shaped embedding top groove of the inverted T-shaped limiting strip; a jack output shaft rotating handle is arranged on the upward output shaft of the supporting jack.

The invention greatly improves the alignment working efficiency by superposing the central axis of the shell blank casting and the central axis of the rotary platform of the machining center of the non-linkage four-axis machine when the machining center of the non-linkage four-axis machine machines the shell blank casting.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a sectional view taken along line A-A in FIG. 1;

FIG. 3 is a schematic view of the square-shaped rotator support base 18 according to the present invention;

FIG. 4 is a schematic view of a square rotary base 22 of the present invention in a bottom view;

FIG. 5 is a schematic structural view of a square-shaped rotary base 22 of the present invention in a plan view;

FIG. 6 is a schematic view of the support jack of the present invention in its configuration for use in line marking;

fig. 7 is a schematic structural view of the scribing mechanism.

Detailed Description

The invention is described in detail below with reference to the accompanying drawings:

a supporting jack for processing and aligning a shell blank casting in a four-axis machining center comprises a square rotating seat supporting bottom support 18 and a square rotating seat 22, wherein a rotating bearing inner ring fixing seat 20 is fixedly arranged at the center of the top surface of the square rotating seat supporting bottom support 18, a hemispherical protrusion 21 is arranged on the rotating bearing inner ring fixing seat 20, a hemispherical groove 24 is arranged at the center of the lower bottom surface of the square rotating seat 22, a rotating bearing outer ring fixing seat 25 is arranged in the hemispherical groove 24, the square rotating seat 22 is sleeved on the hemispherical protrusion 21 on the top surface of the square rotating seat supporting bottom support 18 through the hemispherical groove 24, and a rotating bearing 28 is arranged between the rotating bearing outer ring fixing seat 25 and the rotating bearing inner ring fixing seat 20; a lead screw mounting groove 27 is provided on the top surface of the cube-like rotation base 22, a horizontal lead screw mounting base 26 is provided on the cube-like rotation base 22 outside the lead screw mounting groove 27, a horizontal lead screw 31 is provided on the horizontal lead screw mounting base 26, a lead screw nut block 32 is screwed on the horizontal lead screw 31, and a support jack 33 is fixedly connected to the lead screw nut block 32.

Four inverted T-shaped limit strip embedding bottom grooves 19 are arranged on the top surface of a square-shaped rotating seat support base 18, the four inverted T-shaped limit strip embedding bottom grooves 19 are arranged on the top surface of the square-shaped rotating seat support base 18 in a cross-shaped arrangement mode, four inverted T-shaped limit strip wedge-shaped embedding top grooves 23 are arranged on the lower bottom surface of a square-shaped rotating seat 22, the four inverted T-shaped limit strip embedding bottom grooves 19 and the four inverted T-shaped limit strip wedge-shaped embedding top grooves 23 are correspondingly arranged, inverted T-shaped limit strips 30 are movably arranged between the correspondingly arranged inverted T-shaped limit strip embedding bottom grooves 19 and the inverted T-shaped limit strip wedge-shaped embedding top grooves 23, a pair of butting springs 29 are arranged in the inverted T-shaped limit strip embedding bottom grooves 19, the top ends of the butting springs 29 are butted on the lower bottom surfaces of the inverted T-shaped limit strips 30, the upper top surfaces of the inverted T-shaped limit strips 30 are wedge-shaped top surfaces, the wedge-shaped top surface is movably matched with the inverted T-shaped limit strip wedge-shaped embedding top groove 20; a jack output shaft rotating handle 17 is provided on the upward output shaft of the support jack 33.

In the alignment work of the machined workpiece, the datum plane is taken as a basis, after the alignment in the X direction is realized through the marking mechanism in the X direction, the base of the jack is aligned in the X direction, and the invention realizes that: after alignment in the X direction, the square rotating base supporting bottom support 18 does not move any more, alignment in the Y direction is realized by rotating the square rotating base 22 and then moving the screw nut block 32 on the horizontal screw 31, the defect that the traditional jack is frequently moved during two times of alignment in the X direction and the Y direction is overcome, time is saved, and alignment precision is improved; the height of the jack in the Z direction can be adjusted by rotating the output shaft of the jack to rotate the handle 17; the position of the jack in the X direction can be adjusted by rotating the horizontal screw rod 31; the rotation of the jack can be achieved by rotating the cube-like swivel 22 counterclockwise, which, during rotation, since the inclined directions of the wedge-shaped top surfaces of the upper top surfaces of the four inverted T-shaped stopper bars 30 are arranged in the same rotational direction, when the square-shaped rotating seat 22 rotates along the direction, the wedge-shaped top surfaces of the upper top surfaces of the four inverted-T-shaped limiting strips 30 are pressed to descend downwards along the wedge-shaped surfaces, the inverted-T-shaped limiting strips 30 synchronously descend and then compress the butting springs 29, when the square-shaped rotating seat 22 rotates by 90 degrees, the inverted-T-shaped limiting strip embedding bottom groove 19 and the newly-transferred inverted-T-shaped limiting strip wedge embedding top groove 23 are matched together again, the inverted-T-shaped limiting strip 30 rises under the action of the jacking spring 29, the wedge-shaped top surface of the upper top surface of the inverted-T-shaped limiting strip 30 is embedded into the inverted-T-shaped limiting strip wedge embedding top groove 23, and the 90-degree rotation of the jack is realized; the shell blank casting is centered in the four-axis machining center through the functions, the operation is convenient, the workpiece does not need to leave a jack when the shell blank casting is centered in the X direction and transits to the Y direction, the X direction centering and the Y direction centering are effectively combined, and the centering efficiency is greatly improved.

The utility model provides a three-dimensional formula marking device of dysmorphism casing foundry goods, including marking off platform 1, be provided with support jack 10 on marking off platform 1, be provided with dysmorphism casing foundry goods 9 on support jack 10, be provided with square marking off benchmark frame 2 on the mesa of marking off platform 1, be provided with X direction guide rail support base 3 on square marking off benchmark frame 2, be provided with X direction marking off guide rail 4 on X direction guide rail support base 3, X direction marking off guide rail 4 is gone up the activity and is provided with X direction slider 5, be connected with perpendicular ascending Z direction guide rail 6 on X direction slider 5, Z direction slider 7 is gone up the activity and is provided with Z direction slider 7 on Z direction guide rail 6, be connected with Y direction guide rail 8 on Z direction slider 7, Y direction slider 12 is gone up the activity and is provided with Y direction slider 12 on Y direction guide rail 8, be connected with scriber 14 on Y direction.

A zigzag scribing needle supporting cantilever 13 is connected to the Y-direction slider 12, a zigzag scribing needle 14 is arranged at the outer side end of the zigzag scribing needle supporting cantilever 13, the inner side end of the zigzag scribing needle 14 and the outer side end of the zigzag scribing needle supporting cantilever 13 are connected together in a clamping manner through a clamping sleeve 15, the outer side end of the zigzag scribing needle supporting cantilever 13 is in a four-prism shape, the inner side end of the zigzag scribing needle 14 is also in a four-prism shape, the clamping sleeve 15 is in a rectangular shell shape, and a knurled screw 16 for tightly jacking the outer side end of the zigzag scribing needle supporting cantilever 13 and the inner side end of the scribing needle 14 is arranged on the clamping sleeve 15; an electromagnet 11 is arranged in the X-direction guide rail supporting base 3, and the X-direction guide rail supporting base 3 is fixedly adsorbed on the table top of the scribing platform 1 through the electromagnet 11.

A three-coordinate type marking method for a special-shaped shell casting is characterized by comprising the following steps:

firstly, arranging a right-angle scribing reference frame 2 on a table top of a scribing platform 1, and determining the right-angle scribing reference frame 2 as a scribing reference of a special-shaped shell casting; arranging an X-direction guide rail supporting base 3 on a right-angle scribing reference frame 2, and switching on a power supply of an electromagnet 11 in the X-direction guide rail supporting base 3 to enable an X-direction scribing guide rail 4 to be fixedly adsorbed on a table top of a scribing platform 1;

secondly, supporting the special-shaped shell casting 9 on the table top of a marking platform 1 by using three supporting jacks 10, selecting the highest point and the lowest point of the multi-section non-processing surface in the inner cavity of the special-shaped shell casting 9 through an X-direction marking guide rail 4, an X-direction sliding block 5, a Z-direction guide rail 6, a Z-direction sliding block 7, a Y-direction guide rail 8, a Y-direction sliding block 12 and a scribing pin 14, leveling the workpiece, drawing a horizontal line by using the scribing pin 14, selecting the farthest point and the closest point of the multi-section non-processing surface in the inner cavity of the special-shaped shell casting 9 according to a right-angle reference, aligning the workpiece, finally aligning the multi-coordinate of the special-shaped shell casting 9 and scribing a; when the X, Z direction sizes of all structures in the special-shaped shell casting 9 are marked, the sizes of the cross lines can be reset to zero, and the X, Z direction sizes of all movable blocks are marked by sliding the horizontal ruler; when the Y-direction sizes of all structures in the special-shaped shell casting 9 are drawn, the sizes of all the structures in the Y direction are drawn by zeroing the non-machined flange surface of the inner cavity.

Claims (2)

1. A supporting jack for processing and aligning a shell rough casting in a four-axis processing center comprises a square rotating seat supporting bottom support (18) and a square rotating seat (22), it is characterized in that a rotary bearing inner ring fixing seat is fixedly arranged at the center of the top surface of a square rotary seat supporting bottom support (18), a hemispherical bulge (21) is arranged on the fixed seat of the inner ring of the rotary bearing, a hemispherical groove (24) is arranged at the center of the lower bottom surface of the square rotary seat (22), a rotary bearing outer ring fixing seat (25) is arranged in the hemispherical groove (24), a square rotary seat (22) is sleeved on the hemispherical bulge (21) on the top surface of the square rotary seat supporting bottom support (18) through the hemispherical groove (24), a rotary bearing (28) is arranged between the rotary bearing outer ring fixed seat (25) and the rotary bearing inner ring fixed seat; the square rotary base is characterized in that a lead screw mounting groove (27) is formed in the top face of the square rotary base (22), a horizontal lead screw mounting base (26) is arranged on the square rotary base (22) on the outer side of the lead screw mounting groove (27), a horizontal lead screw (31) is arranged on the horizontal lead screw mounting base (26), a lead screw nut block (32) is connected onto the horizontal lead screw (31) in a threaded mode, and a supporting jack (33) is fixedly connected onto the lead screw nut block (32).

2. A supporting jack for processing and aligning a shell blank casting in a four-axis processing center is characterized in that four inverted T-shaped limiting strip embedding bottom grooves (19) are arranged on the top surface of a square rotating seat supporting bottom support (18), the four inverted T-shaped limiting strip embedding bottom grooves (19) are arranged on the top surface of the square rotating seat supporting bottom support (18) in a cross-shaped mode, four inverted T-shaped limiting strip wedge embedding top grooves are arranged on the lower bottom surface of a square rotating seat (22), the four inverted T-shaped limiting strip embedding bottom grooves (19) and the four inverted T-shaped limiting strip wedge embedding top grooves are correspondingly arranged, inverted T-shaped limiting strips (30) are movably arranged between the correspondingly arranged inverted T-shaped limiting strip embedding bottom grooves (19) and the inverted T-shaped limiting strip wedge embedding top grooves, and a butting spring (29) is arranged in the inverted T-shaped limiting strip embedding bottom grooves (19), the top end of the top connection spring (29) is connected to the lower bottom surface of the inverted T-shaped limit strip (30) in a propping mode, the upper top surface of the inverted T-shaped limit strip (30) is a wedge-shaped top surface, and the wedge-shaped top surface and the inverted T-shaped limit strip are movably matched with each other in a wedge-shaped embedding top groove; a jack output shaft rotating handle (17) is arranged on an upward output shaft of the supporting jack (33).

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