Correction shape control clamp and correction method for frame-shaped casting

Abstract

The invention belongs to the technical field of workpiece correction, and discloses a correction shape control clamp and method for a frame-shaped casting, the clamp comprises a positioning assembly, a pressing assembly, a connecting assembly, a shape control assembly and a pushing assembly, and the positioning assembly comprises a base and a positioning boss arranged on the base in a protruding mode. The positioning boss is used for placing a casting, and the pressing assembly presses the casting on the positioning boss. The shape control assembly abuts against the position between the side wall of the casting and the base and comprises two first wedge blocks and a second wedge block arranged between the two first wedge blocks in an inserted mode. The distance between the second end and the first end of the pushing assembly is adjustable, the first end is detachably connected with the base, the second end of the pushing assembly is used for pushing the casting, and after the casting is corrected, the shape control assembly abuts against the position between the side wall of the casting and the base; or the first end is detachably connected with the second wedge block, the second end is used for pushing the base, and the casting is taken out after correction is completed. According to the method, the casting is corrected, fixed and then subjected to heat treatment, and the correction effect is good.

Description

Technical Field

[0001] The invention relates to the technical field of workpiece correction, and in particular to a correction control fixture and a correction method for a frame-shaped casting. Background Art

[0002] Large frame-type aluminum alloy castings are one-piece castings, and the overall shape is usually a square frame with an overall size of approximately 2.4m×2.4m×0.3m. The wall thickness is uneven and deformation is very likely to occur during the casting production process.

[0003] In order to improve the quality of castings, it is necessary to perform heat treatment correction on the castings. However, castings are prone to deformation during heat treatment, which affects the dimensional accuracy of the castings. Therefore, there is an urgent need for a correction control fixture and correction method for frame-shaped castings to solve the above problems. Summary of the invention

[0004] The purpose of the present invention is to provide a correction control fixture and correction method for a frame-shaped casting, so as to solve the technical problem of poor dimensional accuracy of the frame-shaped casting in the prior art and achieve the technical effect of ensuring that the casting size meets the processing requirements.

[0005] As conceived above, the technical solution adopted by the present invention is:

[0006] Correction and control fixture for frame-shaped castings, including:

[0007] A positioning assembly, comprising a base and a positioning boss protruding from the base; the positioning boss is used to place the casting;

[0008] A clamping assembly and a connecting assembly, wherein the clamping assembly is detachably connected to the base through the connecting assembly, and the clamping assembly presses the casting onto the positioning boss;

[0009] A control component, pressed tightly between the side wall of the casting and the base, comprises two first wedge blocks and a second wedge block inserted between the two first wedge blocks; the two first wedge blocks are provided with a first inclined surface on one side facing each other, and the spacing between the two first inclined surfaces gradually decreases along the insertion direction, and the insertion direction is the direction in which the second wedge block is inserted between the two first wedge blocks; the second wedge blocks are provided with second inclined surfaces on opposite sides, and the second inclined surfaces are pressed tightly against the first inclined surfaces;

[0010] A pushing assembly, wherein the first end of the pushing assembly is detachably connected to the base, and the second end of the pushing assembly is used to push the casting; or, the first end is detachably connected to the second wedge block, and the second end is used to push the base;

[0011] The distance between the second end and the first end is adjustable.

[0012] Furthermore, a positioning hole is provided on the casting;

[0013] The positioning assembly also includes a positioning seat and a positioning pin sleeve. The positioning seat includes a support platform and a positioning protrusion protruding from the support platform. The end of the support platform facing away from the positioning protrusion is connected to the base. The support platform supports the casting. The positioning protrusion is inserted into the positioning hole. The positioning pin sleeve is sleeved on the end of the positioning protrusion and inserted into the gap between the inner wall of the positioning hole and the positioning protrusion.

[0014] Further, the connection assembly includes a first stud, a first nut, a second stud and a second nut;

[0015] The first stud passes through the clamping assembly, the positioning pin sleeve, the positioning seat and is screwed on the base; the first nut is threadedly sleeved on the first stud and is located on a side of the clamping assembly facing away from the casting;

[0016] The second stud passes through the clamping assembly, and a transition block is provided at one end of the second stud, and the transition block is fixedly connected to the base. The second nut is sleeved on the other end of the second stud and is located on the side of the clamping assembly facing away from the casting.

[0017] Furthermore, the connection assembly further comprises a first cushion block and a second cushion block which are sandwiched between the first nut and the clamping assembly and are assembled with each other;

[0018] A third inclined surface and a disassembly striking surface are provided on the side of the first pad facing the second pad, and a fourth inclined surface is provided on the side of the second pad facing the first pad. Both the third inclined surface and the fourth inclined surface are inclined relative to the axial direction of the first stud and are in surface contact, and an operating gap is formed between the disassembly striking surface and the second pad.

[0019] Further, the clamping assembly includes a plurality of clamping blocks disposed on a clamping plate;

[0020] The pressing plate is detachably connected to the base via the connecting assembly, and a plurality of the pressing blocks are used to abut against the casting.

[0021] Furthermore, the base includes a seat body, and a baffle and a stop beam arranged on the seat body; the positioning boss is convexly arranged on the seat body, and a plurality of baffles are arranged around the stop beam, and a receiving space for placing the side wall plate of the casting is formed between the baffle and the stop beam, and the baffle and the side wall plate of the casting, as well as the stop beam and the side wall plate of the casting are used to place the control component.

[0022] Furthermore, a movable baffle is provided between the shape control component and the side wall of the casting.

[0023] Furthermore, it also includes a bracket assembly, which includes a connecting seat and two connecting frames;

[0024] The two connecting frames are respectively connected to the two ends of the connecting seat, and together with the connecting seat, they define an installation space for installing the pushing assembly, and a first end of the pushing assembly is connected to the connecting seat;

[0025] One end of the connecting frame away from the connecting seat can be detachably hooked on the base, or detachably connected to the second wedge block through a fastener.

[0026] Further, the two connecting frames are fixedly connected to the connecting seat; or,

[0027] Sliding columns are arranged at both ends of the connecting seat, and the connecting frame can be slidably sleeved on the corresponding sliding columns to adjust the distance between the two connecting frames.

[0028] As conceived above, the technical solution adopted by the present invention is:

[0029] The correction method of the frame-shaped casting adopts the correction and control fixture of the frame-shaped casting, and comprises the following steps:

[0030] When a casting is placed on the positioning boss, a correction amount of the casting is obtained according to the position of the casting and the position of the positioning boss; wherein the correction amount is a deviation value of an actual distance between the surface of the casting and the surface of the positioning boss in the vertical and horizontal directions relative to a set distance;

[0031] The casting is corrected by pushing the pushing assembly vertically according to the correction amount; the casting is corrected by pushing the pushing assembly horizontally according to the correction amount, and the control component is pressed tightly between the side wall and the base of the casting.

[0032] Beneficial effects of the present invention:

[0033] The correction and control fixture of the frame-shaped casting provided by the present invention first places the casting on the positioning boss, and then presses the casting against the positioning boss through a clamping component and a connecting component, so that the casting can be shaped by a pushing component. After the shaping is completed, the control component is placed between the side wall and the base of the casting, and the first inclined surface is provided on the side facing each other of the two first wedge blocks, and the spacing between the two first inclined surfaces gradually decreases along the insertion direction, and the insertion direction is the direction in which the second wedge block is inserted between the two first wedge blocks; the second inclined surfaces are provided on the opposite sides of the second wedge block, and the second inclined surfaces are pressed against the first inclined surfaces, so that the control component can be pressed between the side wall and the base, and the self-locking of the control component is realized, thereby realizing the fixation of the casting, preventing the shaped casting from being deformed again during the subsequent heat treatment process, and ensuring that the size of the casting meets the processing requirements.

[0034] The correction method for frame-shaped castings provided by the present invention can improve the deformation of large frame-type aluminum alloy castings during the casting production process, and can detect the casting size during shaping to ensure the dimensional accuracy of the casting. At the same time, the casting is constrained during the heat treatment process to reduce the deformation of the casting during the heat treatment, thereby ensuring that the corrected casting size meets the processing requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the contents of the embodiments of the present invention and these drawings without paying any creative work.

[0036] Figure 1 is a schematic diagram of a casting provided by an embodiment of the present invention being installed on a correction and control fixture of a frame-shaped casting;

[0037] Figure 2 is a schematic diagram of a correction casting side wall being concave inwards provided by an embodiment of the present invention;

[0038] Figure 3 is a schematic structural diagram of a first wedge-locking block and a second wedge-locking block provided in an embodiment of the present invention;

[0039] Figure 4 is a schematic structural diagram of a casting provided by an embodiment of the present invention;

[0040] Figure 5 is a partial cross-sectional view of a casting provided by an embodiment of the present invention when it is installed on a correction and control fixture of a frame-shaped casting;

[0041] Figure 6 is a cross-sectional view of a positioning seat and a positioning pin sleeve provided in an embodiment of the present invention;

[0042] Figure 7 is a structural schematic diagram of a first cushion block provided by an embodiment of the present invention;

[0043] Figure 8 is a schematic structural diagram of a second cushion block provided by an embodiment of the present invention;

[0044] Fig. 9 is a schematic diagram of a correction casting side wall protruding outwards provided by an embodiment of the present invention;

[0045] Fig.10 is a schematic diagram of correcting the vertical offset position of a casting provided by an embodiment of the present invention;

[0046] Fig.11 It is a schematic diagram of the second wedge block provided by an embodiment of the present invention when being disassembled.

[0047] In the figure:

[0048] 1. Positioning assembly; 11. Base; 111. Base body; 112. Baffle; 113. Stop beam; 114. Crossbeam; 1141. Support plate; 115. Flip handle; 116. Lifting handle; 12. Positioning boss; 13. Positioning seat; 131. Support table; 132. Positioning protrusion; 14. Positioning pin sleeve;

[0049] 2. Clamping assembly; 21. Pressing plate; 22. Clamping block;

[0050] 31. first stud; 32. first nut; 33. second stud; 34. second nut; 35. transition block; 36. first cushion block; 361. third inclined surface; 362. disassembly striking surface; 37. second cushion block; 371. fourth inclined surface;

[0051] 4. Control type assembly; 41. First wedge block; 411. First inclined surface; 42. Second wedge block; 421. Second inclined surface; 43. Movable baffle;

[0052] 5. Push assembly;

[0053] 6. Casting; 61. Positioning hole;

[0054] 71. Connecting seat; 711. Sliding column; 72. Connecting frame; 73. Fastener; 74. Connecting bracket. DETAILED DESCRIPTION

[0055] In order to make the technical problems solved by the present invention, the technical solutions adopted and the technical effects achieved clearer, the technical solutions of the present invention are further described below in conjunction with the accompanying drawings and through specific implementation methods. It is understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for the convenience of description, only the parts related to the present invention are shown in the accompanying drawings, not all.

[0056] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions.

[0057] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0058] The invention discloses a correction and control fixture for a frame-shaped casting, which can shape the casting before heat treatment and fix the casting when entering a heat treatment furnace together with the casting. Figures 1 to 3 As shown, the correction and control fixture of the frame-shaped casting includes a positioning component 1, a clamping component 2, a connecting component, a control component 4 and a pushing component 5. The positioning component 1 includes a base 11 and a positioning boss 12 protruding from the base 11. The positioning boss 12 is used to place Figure 4The casting 6 shown. Specifically, the surface of the positioning boss 12 is milled and has good flatness. The clamping assembly 2 is detachably connected to the base 11 through a connecting assembly, and the clamping assembly 2 presses the casting 6 against the positioning boss 12. The control assembly 4 is pressed between the side wall of the casting 6 and the base 11, and includes two first wedge blocks 41 and a second wedge block 42 inserted between the two first wedge blocks 41. The two first wedge blocks 41 are both provided with a first inclined surface 411 on one side facing each other, and the spacing between the two first inclined surfaces 411 gradually decreases along the insertion direction, and the insertion direction is the direction in which the second wedge block is inserted between the two first wedge blocks. Second inclined surfaces 421 are provided on the opposite sides of the second wedge block 42, and the second inclined surface 421 is pressed against the first inclined surface 411. The first end of the pushing assembly 5 is detachably connected to the base 11, and the second end of the pushing assembly 5 is used to push the casting 6; or, the first end of the pushing assembly 5 is detachably connected to the second wedge block 42, and the second end of the pushing assembly 5 is used to push the base 11. The distance between the second end of the pushing assembly 5 and the first end of the pushing assembly 5 is adjustable.

[0059] It can be understood that the correction and control fixture of the frame-shaped casting provided by the present invention is to place the casting 6 on the positioning boss 12 first, and then press the casting 6 on the positioning boss 12 by cooperating with the clamping component 2 and the connecting component, so that the casting 6 is fixed in the vertical direction, and then the first end of the pushing component 5 is connected to the base 11, and the distance between the second end of the pushing component 5 and the first end is increased so that the second end abuts against the casting 6 to shape the casting 6. After the shaping is completed, two first wedge blocks 41 and a second wedge block 42 inserted between the two first wedge blocks 41 are placed between the side wall of the casting 6 and the base 11, and the first inclined surface 411 is provided on the side facing each other of the two first wedge blocks 41, and the spacing between the two first inclined surfaces 411 gradually decreases along the insertion direction. In order to insert the second wedge block between the two first wedge blocks, second inclined surfaces 421 are provided on the opposite sides of the second wedge block 42, and the second inclined surfaces 421 are pressed against the first inclined surfaces 411, so that when the second wedge block 42 is inserted into the two first wedge blocks 41, the control component 4 can be pressed between the side wall of the casting 6 and the base 11 while achieving self-locking, thereby achieving the fixation of the casting 6, preventing the shaped casting 6 from being deformed again during the subsequent heat treatment process, and ensuring that the size of the corrected casting 6 meets the processing requirements. After heat treatment, the first end of the pushing component 5 is connected to the second wedge block 42, and the distance between the second end and the first end is adjusted so that the second end pushes the base 11, and the second wedge block 42 is pulled out from between the two first wedge blocks 41, thereby releasing the lock on the casting 6 and facilitating removal.

[0060] Furthermore, if Figures 4 to 6As shown, a positioning hole 61 is provided on the casting 6. The positioning assembly 1 further includes a positioning seat 13 and a positioning pin sleeve 14. The positioning seat 13 includes a support platform 131 and a positioning protrusion 132 protruding from the support platform 131. One end of the support platform 131 facing away from the positioning protrusion 132 is connected to the base 11. The support platform 131 can support the casting 6. The positioning protrusion 132 is inserted into the positioning hole 61. The positioning pin sleeve 14 is sleeved on the end of the positioning protrusion 132 and inserted into the gap between the inner wall of the positioning hole 61 and the positioning protrusion 132.

[0061] Specifically, Figures 4 to 6 As shown, in this embodiment, there are multiple positioning holes 61, and the number of positioning seats 13 is the same as the number of positioning holes 61. When the casting 6 is placed on the positioning boss 12, the multiple groups of positioning holes 61 cooperate with the positioning seats 13 to guide the casting 6, which is convenient for the placement of the casting 6. After the placement is completed, the positioning pin sleeve 14 is inserted into the gap between the inner wall of the positioning hole 61 and the positioning protrusion 132 to fix the casting 6 in the horizontal direction, ensuring that the casting 6 will not move in the horizontal direction when the casting 6 is corrected. At the same time, the multiple matching positioning seats 13 and positioning holes 61 can limit the rotation of the casting 6 on the horizontal plane.

[0062] Furthermore, in the present embodiment, the positioning assembly 1 also includes a pad (not shown in the figure), which is placed between the support platform 131 and the casting 6 after the push assembly 5 corrects the vertical offset of the casting to change the height of the support platform 131, ensuring that after the push assembly 5 corrects the casting 6, the support platform 131 can still effectively support the casting 6 through the pad, thereby preventing the casting 6 from losing support after subsequent correction, which makes it easy for the casting 6 to deform when the casting 6 and the correction and control fixture of the frame-shaped casting are heat treated together.

[0063] Furthermore, if Figure 1 and Figure 5 As shown, the connection assembly includes a first stud 31, a first nut 32, a second stud 33 and a second nut 34. The first stud 31 passes through the clamping assembly 2, the positioning pin sleeve 14, the positioning seat 13 and is screwed on the base 11. The first nut 32 is threadedly sleeved on the first stud 31 and is located on the side of the clamping assembly 2 facing away from the casting 6. The second stud 33 passes through the clamping assembly 2, and a transition block 35 is provided at one end of the second stud 33, and the transition block 35 is fixedly connected to the base 11. The second nut 34 is sleeved on the other end of the second stud 33 and is located on the side of the clamping assembly 2 facing away from the casting 6.

[0064] Specifically, Figure 1 and Figure 5As shown, in this embodiment, the positioning seat 13 is arranged in the middle of the base 11, and the transition block 35 is arranged around the base 11. After the first nut 32 cooperates with the first stud 31 to lock the middle of the casting 6 between the pressing assembly 2 and the positioning boss 12, the surrounding of the casting 6 is locked by the second stud 33 and the second nut 34, further improving the fixing effect of the casting 6 in the vertical direction and ensuring that the casting 6 is pressed in place.

[0065] Furthermore, if Figure 5 , Figure 7 as well as Figure 8 As shown, the connection assembly also includes a first pad 36 and a second pad 37 which are sandwiched between the first nut 32 and the clamping assembly 2 and assembled with each other. A third inclined surface 361 and a disassembly striking surface 362 are provided on the side of the first pad 36 facing the second pad 37, and a fourth inclined surface 371 is provided on the side of the second pad 37 facing the first pad 36. The third inclined surface 361 and the fourth inclined surface 371 are both inclined relative to the axial direction of the first stud 31 and in surface contact. An operation gap is formed between the disassembly striking surface 362 and the second pad 37, and the operation gap is used to avoid the striking tool. By providing the disassembly striking surface 362, it can be avoided that after the casting 6 is calibrated, the clamping force between the first nut 32 and the first stud 31 is too large, and the first nut 32 cannot be screwed out of the first stud 31. After the heat treatment of the casting 6 is completed, use a knocking tool to knock the disassembly knocking surface 362 on the first gasket 36 at the operating notch position, so that the first gasket 36 can be knocked out from between the clamping assembly 2 and the first nut 32. After the first gasket 36 is knocked out, the second gasket 37 can be knocked to knock the second gasket 37 out from between the clamping assembly 2 and the first nut 32 to eliminate the clamping force. The first nut 32 can be removed by directly twisting it, and then the second nut 34 can be easily removed from the second stud 33.

[0066] Furthermore, if Figure 5 As shown, the pressing assembly 2 includes a pressing plate 21 and a plurality of pressing blocks 22 disposed on the pressing plate 21. The pressing plate 21 is detachably connected to the base 11 through a connecting assembly, and the plurality of pressing blocks 22 are used to abut against the casting 6.

[0067] Specifically, Figure 1 and Figure 5 As shown, a plurality of clamping blocks 22 are arranged at the bottom of the pressure plate 21, and the plurality of clamping blocks 22 are used to abut against the casting 6 and press the casting 6 to the positioning boss 12 to correct the top surface of the casting 6. When the gap distance from the bottom surface of the casting 6 to the top surface of the positioning boss 12 is 0, it indicates that the casting 6 is pressed into place.

[0068] Furthermore, if Figure 1 and Figure 2As shown, the base 11 includes a base body 111, and a baffle 112 and a stop beam 113 arranged on the base body 111; the positioning boss 12 is protruded from the base body 111, and a plurality of baffles 112 are arranged around the stop beam 113, and a receiving space for placing the side wall plate of the casting 6 is formed between the baffle 112 and the stop beam 114, and the space between the baffle 112 and the side wall plate of the casting 6, and between the stop beam 113 and the side wall plate of the casting 6 are used to place the control component 4.

[0069] Specifically, Figure 3 and Fig. 9 As shown, in this embodiment, in the control assembly 4 between the baffle 112 and the side wall plate of the casting 6, the second wedge block 42 is inserted downwardly between the two first wedge blocks 41 along the vertical direction, and the spacing between the first inclined surfaces 411 of the two first wedge blocks 41 gradually decreases downwardly along the vertical direction. In the control assembly 4 between the stop beam 113 and the side wall plate of the casting 6, the second wedge block 42 is inserted upwardly between the two first wedge blocks 41 along the vertical direction, and the spacing between the first inclined surfaces 411 of the two first wedge blocks 41 gradually decreases upwardly along the vertical direction.

[0070] Furthermore, if Figure 2 As shown, in order to prevent the second wedging block 42 between the stop beam 113 and the side wall plate of the casting 6 from falling due to deformation of the casting 6 during heat treatment, a crossbeam 114 is further provided on the base 11, and a detachable support plate 1141 is provided on the crossbeam 114. One end of the support plate 1141 is detachably connected to the second wedging block 42, and the other end is detachably connected to the crossbeam 114. Specifically, in this embodiment, one end of the support plate 1141 is connected to the second wedging block 42 by screws, and the other end is also fixed to the crossbeam 114 by screws. After the second wedging block 42 is inserted, the support plate 1141 can fix the second wedging block 42 to prevent the second wedging block 42 from falling off.

[0071] Furthermore, if Figure 2 As shown, in order to facilitate the correction of the casting 6, a flip handle 115 is provided on the base 11. The flip handle 115 enables the correction and control fixture of the frame-shaped casting to be flipped, and the operator can select a suitable angle when correcting the casting 6.

[0072] Furthermore, if Figure 1 As shown, in order to facilitate the transfer and heat treatment of the correction control fixture of the frame-shaped casting, a lifting handle 116 is provided on the base 11. The lifting handle 116 enables the correction control fixture of the frame-shaped casting to be lifted, and the correction control fixture of the frame-shaped casting is transferred to the heat treatment furnace together with the casting 6.

[0073] Further, see Figure 2 and Fig. 9A movable baffle 43 is provided between the mold control component 4 and the side wall of the casting 6. By providing the movable baffle 43, when the side wall of the casting 6 is corrected, the push component 5 can abut against the movable baffle 43, increasing the contact area between the push component 5 and the casting 6, so that the casting 6 is subjected to a more uniform force, which is conducive to improving the correction effect. At the same time, the mold control component 4 is tightly pressed between the movable baffle 43 and the baffle 112, which helps to make the casting 6 subjected to a uniform force during the mold control process.

[0074] Furthermore, if Figure 2 , Figures 9 to 11 As shown, the correction and control fixture of the frame-shaped casting also includes a bracket assembly, and the bracket assembly includes a connecting seat 71 and two connecting frames 72.

[0075] The two connecting frames 72 are respectively connected to the two ends of the connecting seat 71, and together with the connecting seat 71, they define an installation space for installing the push assembly 5. The first end of the push assembly 5 is connected to the connecting seat 71.

[0076] One end of the connecting frame 72 away from the connecting seat 71 can be detachably hooked on the base 11 , or detachably connected to the second wedge block 42 via a fastener 73 .

[0077] Specifically, Fig. 9 As shown, if the side wall of the casting 6 protrudes outward, the connecting frame 72 is fixedly set on the connecting bracket 74, and the connecting bracket 74 can support the horizontally placed connecting frame 72. One end of the connecting frame 72 is connected to the connecting seat 71, and the end away from the connecting seat 71 is hooked on the baffle 112 fixedly set on the base 11. The movable baffle 43 is pushed by the pushing assembly 5 to push the protruding side wall of the casting 6 inward to correct the casting 6.

[0078] like Fig.10 As shown, if the casting 6 is deformed in the vertical direction, one end of the connecting frame 72 away from the connecting seat 71 is hooked on the base 11, and the casting 6 is pushed by the pushing assembly 5 to correct the casting 6.

[0079] like Fig.11 As shown, when the heat treatment of the casting 6 is completed and the second wedge blocks 42 need to be pulled out, the ends of the two connecting frames 72 away from the connecting seat 71 are connected to the two adjacent second wedge blocks 42 through fasteners 73, and the two second wedge blocks 42 are pulled out by pushing the base 11 through the pushing assembly 5. In some embodiments, the fasteners 73 are screws.

[0080] Furthermore, if Figure 2 , Figures 9 to 11 As shown, the two connecting frames 72 are fixedly connected to the connecting seat 71; or,

[0081] Sliding posts 711 are disposed at both ends of the connecting seat 71 , and the connecting frames 72 can be slidably sleeved on the corresponding sliding posts 711 to adjust the distance between the two connecting frames 72 .

[0082] Specifically, Figure 2 and Fig. 9 As shown, when the casting 6 is calibrated, the two connecting frames 72 are fixedly connected to the connecting seat 71 to ensure that the ejection assembly 5 can be well supported.

[0083] like Fig.10 and Fig.11 As shown, the connecting frame 72 is provided with a sliding hole corresponding to the sliding column 711, and the two connecting frames 72 are slidably mounted on the sliding columns 711 at both ends of the connecting seat 71. The distance between the two connecting frames 72 can be adjusted to adapt to the distance between the two second wedge blocks 42 at different positions, thereby improving the versatility of the bracket assembly.

[0084] The present invention discloses a correction method for a frame-shaped casting, which adopts the correction and control fixture for the frame-shaped casting, and comprises the following steps:

[0085] When the casting 6 is placed on the positioning boss 12, the correction amount of the casting 6 is obtained according to the position of the casting 6 and the position of the positioning boss 12; wherein the correction amount is the deviation value of the actual distance between the surface of the casting 6 and the surface of the positioning boss 12 in the vertical and horizontal directions relative to the set distance;

[0086] According to the correction amount, the correction casting 6 is pushed vertically by the pushing assembly 5;

[0087] The casting 6 is pushed and corrected in the horizontal direction by the pushing assembly 5 according to the correction amount, and the control assembly 4 is pressed tightly between the side wall of the casting 6 and the base 11.

[0088] Specifically, in this embodiment, the push assembly 5 is a jack. In other embodiments, the push assembly 5 can also be a cylinder, an oil cylinder, an electric push rod, etc. When calibrating the casting 6, the casting 6 is first guided by the positioning protrusion 132 on the positioning seat 13, the casting 6 is placed on the positioning boss 12, and the casting 6 is supported by the support platform 131, and then the positioning pin sleeve 14 is inserted into the gap between the inside of the positioning hole 61 and the positioning protrusion 132 to fix the casting 6 in the horizontal direction. That is, in this embodiment, the casting 6 is placed on the positioning boss 12 by the positioning protrusion 132 on the positioning seat 13 and the positioning pin sleeve 14. This method uses the positioning protrusion 132, the positioning pin sleeve 14 and the positioning hole 61 as the clamping reference in the horizontal direction, and the top surface of the positioning boss 12 as the clamping reference in the vertical direction.

[0089] Next, install the first stud 31 on the positioning seat 13, and install the clamping block 22 on the pressure plate 21, and place the pressure plate 21 on the casting 6 through the large stud guide, then install the transition block 35 and the second stud 33, place the first cushion block 36 and the second cushion block 37 between the first nut 32 and the pressure plate 21, and make the third inclined surface 361 and the fourth inclined surface 371 fit together, then tighten the first nut 32 and the second nut 34 to clamp the casting 6.

[0090] The actual distance between the surface of the casting 6 and the surface of the positioning boss 12 is measured and compared with the set distance to obtain the correction amount.

[0091] If the casting 6 is deformed in the vertical direction, the correction and control fixture of the frame-shaped casting is flipped 180° by flipping the lifting handle 115, and the bracket assembly is hooked onto the base 11, and the jack is adjusted until the top surface of the casting 6 is tightly attached to the clamping block 22, and then a pad is placed between the support platform 131 and the casting 6 to fix the casting 6, and then the jack is restored, the bracket assembly is disassembled, and the correction and control fixture of the frame-shaped casting is flipped 180° by flipping the lifting handle 115.

[0092] If the side wall of the casting 6 bulges outward and deforms, the connecting frame 72 in the bracket assembly is set on the support frame of the pushing assembly 5, one end of the connecting frame 72 is fixedly set on the connecting seat 71, and the end of the connecting frame 72 away from the connecting seat 71 is hooked on the baffle 112 fixedly set on the base 11, and the movable baffle 43 is pushed by the jack to push the protruding side wall plate of the casting 6 inward to correct the casting 6. When the casting 6 is corrected in place, the two first wedging blocks 41 are placed between the baffle 112 and the movable baffle 43, and then the second wedging block 42 is knocked in between the two first wedging blocks 41. After tightening, the bracket assembly and the jack are disassembled. Then, the correction and control fixture of the frame-shaped casting is turned 180° by turning the lifting handle 115, and then the two first wedge blocks 41 are placed between the stop beam 113 and the casting 6, and then the second wedge block 42 is knocked in between the two first wedge blocks 41, and then the support plate 1141 is installed to fix the positions of the first wedge block 41 and the second wedge block 42 inside the casting 6, so that both the inside and outside of the casting 6 are fixed by the first wedge block 41 and the second wedge block 42. After completion, turn it back by turning the lifting handle 115. Relying on the lifting handle 116, the correction and control fixture of the frame-shaped casting is transported with the casting 6 to the heat treatment furnace for heat treatment.

[0093] If the side wall of the casting 6 is deformed inwardly, the correction and control fixture of the frame-shaped casting is flipped 180° by flipping the hanging handle 115, and one end of the jack is abutted against the cross beam 114, and the other end is used to correct the casting 6. When the casting 6 is corrected in place, the two first wedge blocks 41 are placed between the stop beam 113 and the casting 6, and then the second wedge block 42 is knocked in between the two first wedge blocks 41. After tightening, the jack is removed, and the correction and control fixture of the frame-shaped casting is flipped 180° by flipping the hanging handle 115, and the movable baffle 43 is placed on the outside of the casting 6, and then the two first wedge blocks 41 are placed between the baffle 112 and the movable baffle 43, and then the second wedge block 42 is knocked in between the two first wedge blocks 41, so that the inner and outer sides of the casting 6 are fixed by the first wedge blocks 41 and the second wedge blocks 42. After completion, the lifting handle 116 is used to transport the correction and control fixture of the frame-shaped casting together with the casting 6 to the heat treatment furnace for heat treatment.

[0094] After the heat treatment is completed, the correction and control fixture of the frame-shaped casting is turned 180° by turning the handle 115, and the support plate 1141 is removed. The connecting frame 72 with a sliding hole is selected, and one end of the connecting frame 72 is fixedly set on the connected second wedge block 42, and the end of the connecting frame 72 away from the connecting seat 71 is slidably sleeved on the sliding column 711 of the connecting seat 71. The second wedge block 42 is pulled out by pushing the base 11 with a jack, and then the first wedge block 41 is taken out, and the first wedge block 41 and the second wedge block 46 inside the casting are fixedly set. After all are taken out, the correction and control fixture of the frame-shaped casting is turned over 180° by turning over the handle 115, and then the second wedge block 42 between the movable baffle 43 and the baffle 112 is pulled out in sequence, the first wedge block 41 is taken out, the movable baffle 43 is removed, and the disassembly knocking surface 362 of the first cushion block 36 is knocked out, and then the second cushion block 37 is knocked out, so that the clamping force can be eliminated, the first nut 32 can be easily loosened and taken out, and then the second nuts 34 around it are loosened and taken out, and the pressure plate 21 can be removed. Then, the positioning pin sleeve 14 is removed to remove the casting 6.

[0095] It can be seen that during the casting correction and casting processing, the casting 6 is corrected to the set position by measuring the distance from the side of the casting 6 to the side of the positioning boss 12, and the distance from the casting 6 to the top surface of the positioning boss 12. The distance from the side of the casting 6 to the positioning protrusion 132 is difficult to measure, but the distance from the positioning protrusion 132 to the positioning boss 12 is constant. The present invention converts the distance measured from the side of the casting 6 to the positioning protrusion 132 into the distance measured from the side of the casting 6 to the side of the positioning boss 12, so that the clamping datum, correction datum, and processing datum of the casting 6 are kept consistent. It is only necessary to measure the actual distance between the surface of the corrected casting 6 and the surface of the positioning boss 12 before removing the positioning pin sleeve 14 to confirm the dimensional deviation of the corrected casting 6, which provides a reference basis for subsequent further processing.

[0096] Furthermore, the heat treatment is a solution treatment at a temperature of 530° C. to 540° C. for 6 to 12 hours.

[0097] The cooling medium is water, and the temperature of the cooling medium is 60°C ~ 100°C; the aging temperature is 175°C ~ 185°C, the insulation time is 3 hours ~ 8 hours, and air cooling is performed after taking out of the furnace.

[0098] The above embodiments are only to illustrate the basic principles and characteristics of the present invention. The present invention is not limited by the above embodiments. Without departing from the spirit and scope of the present invention, the present invention may be subject to various changes and modifications, which are within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A correction and control fixture for frame-shaped castings, characterized in that: include: A positioning assembly (1) comprises a base (11) and a positioning boss (12) protruding from the base (11); the positioning boss (12) is used to place a casting (6); A clamping assembly (2) and a connecting assembly, wherein the clamping assembly (2) is detachably connected to the base (11) via the connecting assembly, and the clamping assembly (2) presses the casting (6) onto the positioning boss (12); A control component (4) is pressed between the side wall of the casting (6) and the base (11), and comprises two first wedge blocks (41) and a second wedge block (42) inserted between the two first wedge blocks (41); the two first wedge blocks (41) are each provided with a first inclined surface (411) on one side facing each other, and the spacing between the two first inclined surfaces (411) gradually decreases along the insertion direction, and the insertion direction is the direction in which the second wedge block (42) is inserted between the two first wedge blocks (41); the second wedge block (42) is each provided with a second inclined surface (421) on the opposite sides, and the second inclined surface (421) is pressed against the first inclined surface (411); A pushing assembly (5), wherein the first end of the pushing assembly (5) is detachably connected to the base (11), and the second end of the pushing assembly (5) is used to push the casting (6); or, the first end is detachably connected to the second wedge block (42), and the second end is used to push the base (11); The distance between the second end and the first end is adjustable.

2. The correction and control fixture for the frame-shaped casting according to claim 1 is characterized in that: The casting (6) is provided with a positioning hole (61); The positioning assembly (1) further comprises a positioning seat (13) and a positioning pin sleeve (14); the positioning seat (13) comprises a support platform (131) and a positioning protrusion (132) protruding from the support platform (131); an end of the support platform (131) facing away from the positioning protrusion (132) is connected to the base (11); the support platform (131) supports the casting (6); the positioning protrusion (132) is inserted into the positioning hole (61); the positioning pin sleeve (14) is sleeved on the end of the positioning protrusion (132) and inserted into the gap between the inner wall of the positioning hole (61) and the positioning protrusion (132).

3. The correction and control fixture for the frame-shaped casting according to claim 2 is characterized in that: The connection assembly comprises a first stud (31), a first nut (32), a second stud (33) and a second nut (34); The first stud (31) passes through the clamping assembly (2), the positioning pin sleeve (14), the positioning seat (13) and is screwed on the base (11); the first nut (32) is screwed on the first stud (31) and is located on a side of the clamping assembly (2) facing away from the casting (6); The second stud (33) passes through the clamping assembly (2), and a transition block (35) is provided at one end of the second stud (33), and the transition block (35) is fixedly connected to the base (11). The second nut (34) is sleeved on the other end of the second stud (33) and is located on a side of the clamping assembly (2) facing away from the casting (6).

4. The correction and control fixture for the frame-shaped casting according to claim 3 is characterized in that: The connecting assembly further comprises a first cushion block (36) and a second cushion block (37) which are sandwiched between the first nut (32) and the pressing assembly (2) and are assembled with each other; A third inclined surface (361) and a disassembly striking surface (362) are provided on the side of the first pad (36) facing the second pad (37), and a fourth inclined surface (371) is provided on the side of the second pad (37) facing the first pad (36). Both the third inclined surface (361) and the fourth inclined surface (371) are inclined relative to the axial direction of the first stud (31) and are in surface contact, and an operating gap is formed between the disassembly striking surface (362) and the second pad (37).

5. The correction and control fixture for the frame-shaped casting according to claim 1, characterized in that: The pressing assembly (2) comprises a pressing plate (21) and a plurality of pressing blocks (22) arranged on the pressing plate (21); The pressing plate (21) is detachably connected to the base (11) via the connecting assembly, and the plurality of pressing blocks (22) are used to abut against the casting (6).

6. The correction and control fixture for the frame-shaped casting according to claim 1, characterized in that: The base (11) comprises a base body (111), and a baffle (112) and a stop beam (113) arranged on the base body (111); the positioning boss (12) is protruding from the base body (111), and a plurality of baffles (112) are arranged around the stop beam (113); a receiving space for placing the side wall plate of the casting (6) is formed between the baffle (112) and the stop beam (114); and the space between the baffle (112) and the side wall plate of the casting (6), and the space between the stop beam (113) and the side wall plate of the casting (6) are both used to place the control component (4).

7. The correction and control fixture for the frame-shaped casting according to claim 6, characterized in that: A movable baffle (43) is provided between the control component (4) and the side wall of the casting (6).

8. The correction and control fixture for the frame-shaped casting according to any one of claims 1 to 7, characterized in that: Also included is a bracket assembly, the bracket assembly comprising a connecting seat (71) and two connecting frames (72); The two connecting frames (72) are respectively connected to the two ends of the connecting seat (71), and together with the connecting seat (71) form an installation space for installing the pushing assembly (5), and the first end of the pushing assembly (5) is connected to the connecting seat (71); One end of the connecting frame (72) away from the connecting seat (71) can be detachably hooked on the base (11), or detachably connected to the second wedge block (42) via a fastener (73).

9. The correction and control fixture for the frame-shaped casting according to claim 8, characterized in that: The two connecting frames (72) are both fixedly connected to the connecting seat (71); or, Sliding columns (711) are provided at both ends of the connecting seat (71), and the connecting frame (72) can be slidably sleeved on the corresponding sliding columns (711) to adjust the distance between the two connecting frames (72).

10. A method for correcting a frame-shaped casting, using the correction and control fixture for the frame-shaped casting as claimed in claims 1 to 9, characterized in that: include: When a casting (6) is placed on the positioning boss (12), a correction amount of the casting (6) is obtained according to the position of the casting (6) and the position of the positioning boss (12); wherein the correction amount is a deviation value of an actual distance between a surface of the casting (6) and a surface of the positioning boss (12) in a vertical and horizontal direction relative to a set distance; The casting (6) is corrected by pushing the pushing assembly (5) vertically according to the correction amount; the casting (6) is corrected by pushing the pushing assembly (5) horizontally according to the correction amount, and the control assembly (4) is pressed tightly between the side wall of the casting (6) and the base (11).

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