CN114101488B - Down-pressing convex rib liquid-filling bulging device - Google Patents
Down-pressing convex rib liquid-filling bulging device Download PDFInfo
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- CN114101488B CN114101488B CN202111325420.3A CN202111325420A CN114101488B CN 114101488 B CN114101488 B CN 114101488B CN 202111325420 A CN202111325420 A CN 202111325420A CN 114101488 B CN114101488 B CN 114101488B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/10—Die sets; Pillar guides
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D26/00—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces
- B21D26/02—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces by applying fluid pressure
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D53/00—Making other particular articles
- B21D53/84—Making other particular articles other parts for engines, e.g. connecting-rods
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- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Abstract
The invention discloses a downward pressing type convex rib liquid filling bulging device which comprises a base, a die and a push head, wherein the base is provided with a convex rib; the base is provided with a columnar clamping position for sleeving the annular workpiece; the die is used for abutting the annular workpiece against the columnar clamping position, the die comprises a limiting wall protruding out of the top end of the columnar clamping position and used for abutting the annular workpiece, and a groove is formed in the limiting wall; the push head is arranged above the columnar clamping position and encloses with the limiting wall and the columnar clamping position to form a liquid filling cavity, the downward pressing type convex rib liquid filling and expanding device further comprises a liquid filling pipeline used for conveying high-pressure liquid to the liquid filling cavity to enable the annular workpiece to face the groove to be filled with liquid and expanded to form a convex rib, and the push head is used for pressing the annular workpiece downward in the liquid filling and expanding process of the annular workpiece. The downward pressing type convex rib liquid filling bulging device provided by the invention can enable the annular workpiece to carry out axial material supplement along with the liquid filling bulging process, avoid excessive thinning of local materials in a bulging area, ensure uniform overall wall thickness and ensure the strength and precision of the convex rib.
Description
Technical Field
The invention relates to the technical field of machining of sheet metal parts of aero-engines, in particular to a downward pressing type convex rib liquid filling bulging device for machining of sheet metal parts of aero-engines.
Background
As shown in fig. 1, currently, for the processing of the U-shaped convex rib 21 on the annular workpiece 2 of the aircraft engine, the U-shaped convex rib is formed by means of local spinning or local bulging, and the forming process is complex and cannot be formed at one time. More importantly, when the rib structure is narrow in size and deep in depth, the requirement on the size precision of the rib structure from the end face is high, if common bulging or spinning processing is adopted, a forming block needs to be replaced for many times, the forming block is influenced by material flow in the forming process, the material at the part is inevitably thinned and seriously broken, and the use requirement of parts cannot be met. Secondly, the flow of material is likely to cause changes in the relative position and shape of the molding surface and the end surface, affecting the precision of the part.
Disclosure of Invention
The invention provides a downward pressing type convex rib liquid filling and bulging device, which aims to solve the technical problems that a convex rib on an annular workpiece is difficult to form at one time, the strength of the workpiece is reduced in the forming process, and the machining precision is poor.
A downward pressing type convex rib liquid filling bulging device comprises a base, a die and a push head; the base is provided with a columnar clamping position which is arranged along the vertical direction and is used for sleeving an annular workpiece, and the axial height of the columnar clamping position is lower than that of the annular workpiece, so that the position to be processed of the annular workpiece protrudes out of the top end of the columnar clamping position; the die is arranged around the periphery of the columnar clamping position and used for tightly abutting the annular workpiece on the columnar clamping position, the die comprises a limiting wall protruding out of the top end of the columnar clamping position and used for abutting the annular workpiece, and a groove which is matched with the annular workpiece and is in a shape of a convex rib to be processed is formed in the limiting wall; the push head is arranged above the columnar clamping position and encloses with the limiting wall and the columnar clamping position to form a liquid filling cavity, the downward pressing type convex rib liquid filling and bulging device further comprises a liquid filling pipeline used for conveying high-pressure liquid to the liquid filling cavity so as to enable the annular workpiece to face the groove liquid filling and bulging to form a convex rib, and the push head is used for abutting against the top end of the annular workpiece and pressing the annular workpiece downward in the liquid filling and bulging process of the annular workpiece.
Preferably, the mould comprises a plurality of mould segments spliced in sequence along the circumference of the cylindrical screens.
Preferably, the mold further comprises a screw and a driving component, one end of the screw is rotatably connected with the mold section and is axially fixed relative to the mold section, the other end of the screw extends in the direction away from the cylindrical clamping position, the driving component is arranged at one end of the screw away from the mold section and is used for driving the screw to rotate, a supporting block is arranged on the base, a threaded adjusting hole for the screw to penetrate through is formed in the supporting block, and the screw is in threaded connection with the threaded adjusting hole.
Preferably, the mould further comprises a sliding block connected with the mould section, a guide rail extending along the direction far away from the columnar clamping position is arranged on the base, and the sliding block can be slidably clamped on the guide rail.
Preferably, the pusher comprises a sealing section and a limiting section which are coaxially arranged, the sealing section is used for being closely matched with one surface of the die away from the annular workpiece, the limiting section is used for being closely matched with the limiting wall, the diameter of the limiting section is larger than that of the sealing section, and a limiting step used for being abutted to the top end of the annular workpiece is formed at the bottom end of the limiting section.
Preferably, the seal groove has been seted up to the seal section, the protruding muscle fluid filling bulging arrangement of formula of pushing down still including inlay locate in the seal groove and be used for the butt the sealing washer of annular workpiece.
Preferably, the lower pressing type convex rib liquid filling and bulging device further comprises a limiting seat, the limiting seat is pressed on the die and enables the die to be limited and fixed relative to the base, the limiting seat is provided with a guide hole which is coaxial with the columnar clamping position, and the push head penetrates through the guide hole.
Preferably, the downward pressing type convex rib liquid filling and bulging device further comprises a first limiting block which is arranged on the bottom surface of the limiting seat and located at one end, far away from the columnar clamping position, of the mold, the first limiting block is provided with a limiting inclined plane abutted against the mold, and the upper end of the limiting inclined plane inclines towards the direction close to the columnar clamping position.
Preferably, the lower pressing type convex rib liquid filling and bulging device further comprises a second limiting block which is arranged on the bottom surface of the limiting seat and is positioned at the top end of the die, and the first limiting block is abutted to the die and drives the die to abut against the annular workpiece, so that the second limiting block is abutted to the top end of the die.
Preferably, the downward pressing type convex rib liquid filling and bulging device further comprises a third limiting block which is arranged on the base and is abutted against the pushing head when the pushing head is pressed downwards to a preset height.
The invention has the following beneficial effects:
in the downward pressing type convex rib liquid filling bulging device provided by the invention, the annular workpiece is stably fixed through the matching of the base, the die and the push head, so that the annular workpiece cannot move in the machining process, then, the push head, the limiting wall on the die and the columnar clamping position on the base jointly enclose a liquid filling cavity, the annular workpiece can be subjected to liquid filling bulging towards the groove of the die through conveying high-pressure liquid into the liquid filling cavity to form a convex rib, in addition, the side wall of the annular workpiece is pushed downwards through the push head in the liquid filling bulging process, the axial material supplement can be carried out on the annular workpiece along with the liquid filling bulging process, so that the deformation degree of a material in a bulging area is improved, the material at the convex rib position can be completely attached to the die under lower liquid chamber pressure, the excessive thinning of a local material in the bulging area is avoided, the requirement on the bulging size at the convex rib position is met, the integral wall thickness uniformity of the part is ensured, and the strength and precision of the convex rib are further ensured.
In addition to the above-described objects, features and advantages, the present invention has other objects, features and advantages. The present invention will be described in further detail below with reference to the drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 is a structural diagram of an annular workpiece to which a downward pressing type rib liquid-filling bulging device provided in an embodiment of the present invention is applied;
fig. 2 is a schematic cross-sectional structure view of a downward pressing type rib liquid-filled bulging apparatus according to an embodiment of the present invention;
FIG. 3 is an enlarged view of a portion of area A of the push down bead liquid-filled bulging apparatus shown in FIG. 2;
FIG. 4 is a cross-sectional view of the downward pressing type convex rib liquid-filled bulging apparatus shown in FIG. 2 with the pushing head and the limiting seat removed;
fig. 5 is a top view of the push down bead liquid-filled bulging apparatus shown in fig. 4.
Illustration of the drawings:
1. a downward pressing type convex rib liquid filling bulging device; 100. a liquid filling cavity; 11. a base; 111. columnar clamping; 112. a liquid-filled pipe; 113. a support block; 114. a guide rail; 115. a limiting sleeve; 116. a base seal groove; 12. a mold; 121. a mold segment; 1211. a limiting wall; 1212. a groove; 122. a screw; 123. a drive assembly; 124. a slider; 13. pushing the head; 131. a sealing section; 1311. a sealing groove; 132. a limiting section; 133. a limiting step; 134. a guide section; 14. a limiting seat; 141. a guide hole; 142. a limiting column; 15. a first stopper; 16. a second limiting block; 17. a third limiting block; 18. a seal ring; 19. a guide sleeve; 2. an annular workpiece; 21. a rib is protruded; 22. a bottom wall.
Detailed description of the preferred embodiments
The embodiments of the invention will be described in detail below with reference to the accompanying drawings, but the invention can be embodied in many different forms, which are defined and covered by the following description.
Fig. 2 to 5 collectively show a downward pressing type convex rib liquid filling bulging device provided in an embodiment of the present invention, which is used for processing a side wall of an annular workpiece to form a convex rib, so that a convex rib structure can be formed by one-step processing, material thinning of the convex rib structure can be avoided, and structural strength and processing precision of the convex rib can be ensured.
The annular workpiece 2 is shown in fig. 1, the annular workpiece 2 is of a cylindrical structure as a whole, a rib 21 needs to be machined on the side wall of the annular workpiece 2, the overall thickness of the annular workpiece 2 is 0.8mm, the rib 21 is narrow in size and large in depth, and the rib 21 comprises a straight wall section and a circular arc surface, so that the requirements on strength and precision are high.
Referring to fig. 2 and 3, the downward pressing type convex rib liquid filling and expanding device 1 includes a base 11, a mold 12 and a pushing head 13, wherein the base 11 is provided with a cylindrical detent 111 arranged along a vertical direction and used for being sleeved with the annular workpiece 2, and an axial height of the cylindrical detent 111 is lower than an axial height of the annular workpiece 2, so as to protrude a position to be processed of the annular workpiece 2 from a top end of the cylindrical detent 111. The die 12 is disposed around the periphery of the cylindrical retaining portion 111 and is used for abutting the annular workpiece 2 against the cylindrical retaining portion 111, the die 12 includes a limiting wall 1211 protruding from the top end of the cylindrical retaining portion 111 and used for abutting the annular workpiece 2, and the limiting wall 1211 is provided with a groove 1212 adapted to the annular workpiece 2 and shaped as the convex rib 21 to be processed. The push head 13 is arranged above the columnar clamping position 111, the top end of the push head 13 is used for being connected with a machine tool, and the bottom end of the push head 13 is used for abutting against the top end of the annular workpiece 2 and pressing the annular workpiece 2 under the driving of the machine tool in the liquid filling and bulging process of the annular workpiece 2.
Specifically, the push head 13, the limit wall 1211 and the cylindrical clamping position 111 together define a liquid filling cavity 100, the downward pressing type convex rib liquid filling and expanding device 1 further includes a liquid filling pipe 112 which is communicated with the liquid filling cavity 100 and used for conveying high-pressure liquid to the liquid filling cavity 100, the annular workpiece 3 can be subjected to liquid filling and expanding towards the groove 1212 to form the convex rib 21 by conveying the high-pressure liquid to the liquid filling cavity 100 through the liquid filling pipe 112, and the annular workpiece 2 can be pressed downward by the push head 13 in the liquid filling and expanding process of the annular workpiece 2, so that the side wall of the annular workpiece 2 can be subjected to axial material replenishing along with the liquid filling and expanding process, thereby the deformation degree of the material in the expanding area is improved, the material at the convex rib position can be completely attached to the die at a lower liquid chamber pressure, and the local material in the expanding area is prevented from being excessively thinned, the requirement on the expanding size at the convex rib position is met, the integral part is ensured to be uniform in wall thickness, and the strength and accuracy of the convex rib 21 are ensured.
Secondly, the lower pressing type convex rib liquid filling bulging device 1 can respectively support the inner wall, the outer wall and the upper end and the lower end of the annular workpiece 2 tightly through the mutual matching of the base 11, the die 12 and the push head 13, so that the annular workpiece 2 is stably fixed, the annular workpiece 2 is ensured not to move in the machining process, and the machining precision is ensured.
It should be understood that, in the present embodiment, the liquid filling pipe 112 is opened on the base 11, and can be fixed relatively stably, so as to ensure the sealing effect. In other embodiments, the liquid filling pipe 112 may be arranged on the mold 12 or the push head 13 according to actual use situations and requirements.
Referring to fig. 4 and 5, the mold 12 includes a plurality of mold segments 121 sequentially spliced along the circumferential direction of the cylindrical clamping portion 111, and the limiting wall 1211 and the groove 1212 are both disposed on the mold segments 121, that is, the mold segments 121 are sequentially spliced to form a complete mold, so that the manufacturing difficulty of the mold 12 is effectively reduced, the cost is reduced, an avoiding space can be formed at the periphery of the cylindrical clamping portion 111 by the action of splitting the mold segments 121, the convenience of loading and unloading the annular workpiece 2 is improved, and the processing is facilitated.
Preferably, the mold 12 further includes a screw 122 and a driving component 123, the screw 122 is disposed along a horizontal direction, one end of the screw 122 is rotatably connected to the mold segment 121 and is axially fixed relative to the mold segment 121, the other end of the screw 122 extends in a direction away from the cylindrical detent 111, a support block 113 is disposed on the base 11, a threaded adjustment hole (not numbered, the same below) is formed in the support block 113 in the axial direction of the screw 122, the screw 122 is inserted into the threaded adjustment hole and is in threaded connection with the threaded adjustment hole, the driving component 123 is disposed at one end of the screw 122 away from the mold segment 121 and is configured to drive the screw 122 to rotate in the threaded adjustment hole, so that the screw 122 is driven to move along the axial direction thereof by a spiral structure, and then the screw 122 drives the mold segment 121 to move in a direction close to the cylindrical detent 111 or in a direction away from the cylindrical detent 111, and a plurality of the mold segments 121 are spliced or split by linear movement, thereby ensuring the assembly accuracy of the mold segment 121.
Further, the driving assembly 123 includes a handwheel circumferentially fixed to the screw 122, and the die segments 121 are driven to move by the handwheel, so that the structure is simple, the driving is stable, and the cost is reduced. In other embodiments, the driving assembly 123 may also be composed of a motor or a rotary air rod, which can control the moving stroke of the mold segments 121 more precisely.
Preferably, the mold 12 further includes a slider 124 connected to the mold segment 121, the base 11 is provided with a guide rail 114 extending along the axis of the screw 122, the slider 124 is clamped on the guide rail 114 and can slide relative to the guide rail 114, and stability and precision of movement adjustment of the mold segment 121 are further improved through guiding cooperation of the slider 124 and the guide rail 114.
As shown in fig. 2, the downward pressing type convex rib liquid filling and expanding device 1 further includes a limiting seat 14, the limiting seat 14 is pressed on the mold 12 and limits and fixes the mold 12 relative to the base 11, the limiting seat 14 is provided with a guiding hole 141 coaxially disposed with the cylindrical clamping position 111, and the pushing head 13 is inserted into the guiding hole 141. Through spacing seat 14 is to mould section 121 strengthen fixed the time, it is spacing to lead the lift of pushing head 13, avoid pushing head 13 takes place to rock at the in-process that pushes down, further guarantee the machining precision.
Preferably, the base 11 is further provided with a limiting sleeve 115, a limiting column 142 is arranged at a position, corresponding to the limiting sleeve 115, of the bottom of the limiting seat 14, the limiting column 142 penetrates through the limiting sleeve 115 and enables the limiting seat 14 to be limited and fixed relative to the base 11, so that the looseness of the limiting seat 14 is avoided.
Preferably, the downward pressing type convex rib liquid filling and expanding device 1 further includes a first limiting block 15 disposed on the bottom surface of the limiting seat 14 and located at one end of the mold 12 far away from the cylindrical clamping portion 111, the first limiting block 15 is provided with a limiting inclined surface 151 abutting against the mold 12, and the upper end of the limiting inclined surface 151 inclines towards the direction close to the cylindrical clamping portion 111, so that when the first limiting block 15 is driven by the limiting seat 14 to be pressed down, the mold segments 121 are gradually abutted against the cylindrical clamping portion 111 through the limiting inclined surface 151, thereby preventing the mold segments 121 from being loosened due to the thread clearance between the screw 122 and the thread adjusting hole, and ensuring that the mold segments 121 are installed in place.
Preferably, the downward pressing type convex rib liquid filling and expanding device 1 further includes a second stopper 16 disposed on the bottom surface of the stopper seat 14 and located at the top end of the die segment 121, and by adjusting the thickness of the second stopper 16 in the vertical direction, when the first stopper 15 abuts against the die segment 121 and drives the die segment 121 to abut against the annular workpiece 2 in place, the second stopper 16 just abuts against the top end of the die segment 121, so as to prevent the first stopper 15 from further descending and pressing the die segment 121, and further strengthen and fix the die segment 121, thereby further ensuring the installation accuracy and stability of the die segment 121.
Preferably, the downward pressing type convex rib liquid filling and expanding device 1 further comprises a third limiting block 17 disposed on the base 11, and the third limiting block 17 is disposed at a center position of the cylindrical retaining position 111 and is used for limiting a lowest position of the pushing head 13, that is, the pushing head 13 abuts against and supports the pushing head 13 when the pushing head 13 is pressed down to a preset height, so that the pushing head 13 is prevented from further descending after the convex rib 21 of the annular workpiece 2 is filled with liquid and expanded, and excessive extrusion on the annular workpiece 2 is avoided.
Further, first stopper 15 and second stopper 16 all with spacing seat 14 can be dismantled and be connected, third stopper 17 with base 11 can be dismantled and be connected, and the dismouting is changed when the production wearing and tearing are convenient, guarantees the machining precision. More importantly, the first limiting block 15, the second limiting block 16 and/or the third limiting block 17 with different thicknesses can be replaced according to the requirement of the machining position of the annular workpiece 2, the limiting height is adjusted, the machining requirements of different workpieces are met, and the applicability is improved.
As shown in fig. 3, the pushing head 13 includes a sealing section 131 and a limiting section 132, which are coaxially disposed from bottom to top, the sealing section 131 is configured to abut against a surface of the annular workpiece 2 away from the limiting wall 1211 and is tightly fitted with the annular workpiece 2, the limiting section 132 is disposed at a top end of the annular workpiece 2 and is configured to abut against the limiting wall 1211, so as to be tightly fitted with the limiting wall 1211 through the limiting section 132, a diameter of the limiting section 132 is greater than a diameter of the sealing section 131, and a limiting step 133 for abutting against the top end of the annular workpiece 2 is formed at a bottom end of the limiting section 132.
It should be understood that the tight fit relationship between the sealing section 131 and the annular workpiece 2, and the tight fit relationship between the limiting section 132 and the limiting wall 1211 refer to a state where the two structures are completely fitted and attached to each other, so as to achieve a certain sealing effect. Therefore, the push head 13 wraps the annular workpiece 2 through the matching of the sealing section 131 and the limiting section 132, and then the annular workpiece 2 is pressed down through the limiting step 133, so that the deformation direction of the annular workpiece 2 can be effectively controlled, and the processing precision of the convex rib 21 is ensured.
Preferably, the sealing section 131 is provided with a sealing groove 1311, the sealing groove 1311 is disposed around the sealing section 131 along the circumferential direction of the sealing section 131, the downward pressing type convex rib liquid filling and bulging apparatus 1 further includes a sealing ring 18 embedded in the sealing groove 1311 and used for abutting against the annular workpiece 2, so as to improve the sealing effect between the sealing section 131 and the annular workpiece 2, avoid the overflow of high-pressure liquid in the liquid filling cavity 100, and ensure the liquid filling and bulging effect.
As shown in fig. 2, the pushing head 13 further includes a guiding section 134 coaxially connected to one end of the limiting section 132, which is far away from the sealing section 131, the guiding section 134 is adapted to a guiding hole 141 of the limiting seat 14, and the pushing head 13 is in guiding fit with the guiding hole 141 through the guiding section 134, so as to ensure stability.
Further, the downward pressing type convex rib liquid filling bulging device 1 further comprises a guide sleeve 19 embedded in the guide hole 141, the guide section 134 penetrates through the guide sleeve 19 and is in guide fit with the guide hole 141, and the pushing head 13 is prevented from wearing the limiting seat 14 in the process of multiple downward pressing and acting, so that the limiting seat 14 is prevented from being repaired or remade, only the guide sleeve 19 needs to be replaced when the pushing head is worn, the durability is ensured, and the maintenance cost is reduced.
Referring to fig. 1 and 3, when the annular workpiece 2 further includes a bottom wall 22 connected to the bottom end of the side wall and perpendicular to the side wall, the bottom wall 22 can be directly pressed between the mold segment 121 and the base 11, so as to strengthen the fixing of the annular workpiece 2 and further improve the stability of the annular workpiece 2.
As shown in fig. 3, further, a base sealing groove 116 is further formed in a position, corresponding to the bottom wall 22, of the upper surface of the base 11, the sealing ring 18 is also embedded in the base sealing groove 116, and the bottom wall 22 is tightly abutted by the sealing ring 18 in the base sealing groove 116, so that the annular workpiece 2 can be tightly matched with the base 11, the sealing effect is enhanced, and the high-pressure liquid in the liquid filling cavity 100 is prevented from overflowing along a gap between the annular workpiece 2 and the base 11.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (3)
1. A downward pressing type convex rib liquid filling bulging device is characterized by comprising a base (11), a die (12) and a push head (13);
the base (11) is provided with a columnar clamping position (111) which is arranged along the vertical direction and is used for being sleeved with the annular workpiece (2), and the axial height of the columnar clamping position (111) is lower than that of the annular workpiece (2), so that the position to be machined of the annular workpiece (2) protrudes out of the top end of the columnar clamping position (111);
the die (12) is arranged around the periphery of the columnar clamping position (111) and used for abutting the annular workpiece (2) against the columnar clamping position (111), the die (12) comprises a limiting wall (1211) protruding out of the top end of the columnar clamping position (111) and used for abutting against the annular workpiece (2), and a groove (1212) matched with the annular workpiece (2) and in the shape of a convex rib (21) to be processed is formed in the limiting wall (1211);
the push head (13) is arranged above the columnar clamping position (111) and encloses a liquid filling cavity (100) together with the limiting wall (1211) and the columnar clamping position (111), the downward pressing type convex rib liquid filling and bulging device further comprises a liquid filling pipeline (112) used for conveying high-pressure liquid to the liquid filling cavity (100) so as to enable the annular workpiece (2) to face the groove (1212) to be filled and bulged to form a convex rib (21), and the push head (13) is used for abutting against the top end of the annular workpiece (2) and pressing the annular workpiece (2) downward in the liquid filling and bulging process of the annular workpiece (2);
the mould (12) comprises a plurality of mould sections (121) which are sequentially spliced along the circumferential direction of the cylindrical clamping position (111);
the die (12) further comprises a screw (122) and a driving component (123), one end of the screw (122) is rotatably connected with the die section (121) and is axially fixed relative to the die section (121), the other end of the screw (122) extends in the direction away from the cylindrical clamping position (111), the driving component (123) is arranged at one end of the screw (122) away from the die section (121) and is used for driving the screw (122) to rotate, a supporting block (113) is arranged on the base (11), a thread adjusting hole for the screw (122) to penetrate through is formed in the supporting block (113), and the screw (122) is in threaded connection with the thread adjusting hole;
the mould (12) further comprises a sliding block (124) connected with the mould section (121), a guide rail (114) extending along the direction far away from the cylindrical clamping position (111) is arranged on the base (11), and the sliding block (124) is slidably clamped on the guide rail (114);
the lower pressing type convex rib liquid filling bulging device further comprises a limiting seat (14), the limiting seat (14) is pressed on the die (12) and enables the die (12) to be limited and fixed relative to the base (11), the limiting seat (14) is provided with a guide hole (141) which is coaxial with the columnar clamping position (111), and the push head (13) penetrates through the guide hole (141);
the lower pressing type convex rib liquid filling bulging device further comprises a first limiting block (15) which is arranged on the bottom surface of the limiting seat (14) and is positioned at one end, far away from the cylindrical clamping position (111), of the die (12), the first limiting block (15) is provided with a limiting inclined plane (151) which is abutted to the die (12), and the upper end of the limiting inclined plane (151) inclines towards the direction close to the cylindrical clamping position (111);
the lower pressing type convex rib liquid filling bulging device further comprises a second limiting block (16) which is arranged on the bottom surface of the limiting seat (14) and is positioned at the top end of the die (12), the first limiting block (15) is abutted against the die (12) and drives the die (12) to abut against the annular workpiece (2), so that the second limiting block (16) is abutted against the top end of the die (12);
the downward pressing type convex rib liquid filling bulging device further comprises a third limiting block (17) which is arranged on the base (11) and is abutted to the push head (13) when the push head (13) is pressed downwards to a preset height.
2. The downward-pressing type convex rib liquid-filled bulging device according to claim 1, wherein the pushing head (13) comprises a sealing section (131) and a limiting section (132) which are coaxially arranged, the sealing section (131) is used for being tightly matched with one surface of the annular workpiece (2) far away from the die (12), the limiting section (132) is used for being tightly matched with the limiting wall (1211), the diameter of the limiting section (132) is larger than that of the sealing section (131), and a limiting step (133) used for abutting against the top end of the annular workpiece (2) is formed at the bottom end of the limiting section (132).
3. The downward pressing type convex rib liquid filling and expanding device according to claim 2, wherein the sealing section (131) is provided with a sealing groove (1311), and the downward pressing type convex rib liquid filling and expanding device further comprises a sealing ring (18) which is embedded in the sealing groove (1311) and used for abutting against the annular workpiece (2).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111325420.3A CN114101488B (en) | 2021-11-10 | 2021-11-10 | Down-pressing convex rib liquid-filling bulging device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111325420.3A CN114101488B (en) | 2021-11-10 | 2021-11-10 | Down-pressing convex rib liquid-filling bulging device |
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| CN114101488A CN114101488A (en) | 2022-03-01 |
| CN114101488B true CN114101488B (en) | 2023-04-11 |
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| KR20160113367A (en) * | 2015-03-18 | 2016-09-29 | 주식회사 포스코 | Hydro forming apparatus and method |
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| CN112045025A (en) * | 2020-06-30 | 2020-12-08 | 中国航发南方工业有限公司 | Hydraulic bulging processing die and hydraulic bulging processing method for flange type casing outer cover |
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