Modularized and flexible symmetrical centering, positioning and clamping device for special-shaped support

Abstract

A modularized and flexible symmetrical centering, positioning and clamping device for a special-shaped support comprises a bottom plate, a first positioning assembly and second positioning assemblies are sequentially arranged at the top of the bottom plate from left to right, and second clamping assemblies are symmetrically arranged on the front side and the rear side of the first clamping assembly and the front side and the rear side of the second positioning assemblies; the first positioning assembly comprises a vertical plate and positioning cushion blocks, the vertical plate is detachably fixed to the top of the bottom plate, and the two symmetrical positioning cushion blocks are detachably fixed to the right side of the vertical plate; the second positioning assembly comprises a first power source, a first power seat, a base, a mounting seat, a connecting shaft, a spring, positioning shafts, a positioning shaft guide end cover, an adjusting bolt and an angle positioning block, the symmetrical positioning shafts are arranged on the two sides of the connecting shaft, inclined planes matched with the positioning shafts are arranged on the side faces of the connecting shaft, and the first power source drives the positioning shafts to move through the connecting shaft; the first clamping assembly and the second clamping assembly are detachably fixed to the bottom plate. According to the special-shaped support machining device, machining of various special-shaped support products is conveniently met, the positioning accuracy is improved, and the cost is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of mechanical manufacturing and processing, and in particular to a modular and flexible symmetrical centering and positioning clamping device for a special-shaped bracket. Background Art

[0002] like Figure 1 and Figure 2 The special-shaped bracket shown is mainly used as a spring pressure plate. When processing the flange hole, the left and right reinforcing ribs under the flange are used to locate the height and left and right positions of the workpiece. There is an angle between the top and bottom of the flange, and the center of the flange surface light hole line has position tolerance requirements relative to the center of the inner distance size of the left and right reinforcing ribs under the flange. Because the blank of the special-shaped bracket has manufacturing tolerances, the blank is cleaned with hydraulic pliers, which will cause the reinforcing ribs to deform, resulting in a large change in the distance size between the inner two sides of the reinforcing ribs, and a large change in the height size of the reinforcing ribs relative to the top of the flange, resulting in a large fluctuation in the relative shape position deviation of the flange surface light hole. The dimensional tolerance and angle tolerance of the center of the flange surface light hole line relative to the center of the inner two sides of the reinforcing ribs under the flange are difficult to guarantee, and the thickness of the flange surface is uneven, and the depth of the processing under the flange is difficult to guarantee stably, which seriously affects the processing quality and assembly performance of the bracket. During use, there are the following disadvantages: (1) Conventional hydraulic synchronous centering mechanisms, two-jaw chuck synchronous centering mechanisms, and vise synchronous centering mechanisms are too large in size, limited by size and space, and are too expensive and have poor performance.

[0003] (2) The special-shaped brackets are a variety of series products with similar structures, but with different flange angles and different outer contour dimensions of the brackets. They require the use of a variety of clamps of different specifications, which are costly, time-consuming to assemble and disassemble, and result in low processing efficiency. Summary of the invention

[0004] The purpose of the present invention is to provide a modular and flexible symmetrical centering and positioning clamping device for special-shaped brackets, which is convenient for processing special-shaped bracket products of various specifications, improves positioning accuracy and reduces costs.

[0005] The technical solution adopted by the present invention is: A modular and flexible symmetrical centering positioning clamping device for a special-shaped bracket includes a base plate. The top of the base plate is provided with a first positioning component, a second positioning component, and a first clamping component from left to right in sequence. The front and rear sides of the second positioning component are symmetrically provided with a second clamping component. The first positioning component and the second positioning component play a positioning role, and the first clamping component and the second clamping component play a role in clamping the workpiece.

[0006] The first positioning assembly includes a vertical plate and a positioning pad. The vertical plate is detachably fixed to the top of the base plate. Two symmetrical positioning pads are detachably fixed to the right side of the vertical plate for fitting with the left side of the workpiece to play a positioning role. Specifically, the right side surface of the positioning pad is provided with anti-slip grooves to facilitate anti-slip effect.

[0007] The second positioning assembly includes a first power source, a first power seat, a base, a mounting seat, a connecting shaft, a spring, a positioning shaft, a positioning shaft guide end cover, an adjusting bolt, and an angle positioning block. The first power source is detachably fixed to the first power seat, and the first power seat is detachably fixed to the vertical plate; the base is arranged on the right side of the vertical plate and is detachably fixed to the top of the bottom plate, the mounting seat is detachably fixed to the top of the base, a first sliding hole is provided on the mounting seat, the connecting shaft is slidably connected in the first sliding hole, the left end of the connecting shaft extends to the outside of the first sliding hole and is detachably connected to the free end of the first power source, symmetrical positioning shafts are provided on both sides of the connecting shaft, and an inclined surface matching the positioning shaft is provided on the side surface of the connecting shaft. Specifically, the inner end surface of the positioning shaft is an inclined surface and fits with the inclined surface of the connecting shaft, and two sides of the mounting seat are respectively provided with The second sliding hole is connected, the positioning shaft guide end cover is arranged at the outer end of the second sliding hole and is detachably fixedly connected to the mounting seat, the spring sleeve is arranged on the positioning shaft, specifically, the positioning shaft is a stepped shaft, a limiting step is provided on the positioning shaft, the inner end of the spring is tightly pressed against the limiting step, and the outer end of the spring is tightly pressed against the inner side of the positioning shaft guide end cover to play a limiting role, and the automatic return of the positioning shaft is realized through the rebound of the spring, the outer end of the positioning shaft is arranged in the positioning shaft guide end cover and is threadedly connected to the adjusting bolt, the adjusting bolt extends to the outside of the outer positioning shaft guide end cover to play a positioning role, and it is convenient to adjust the extension length of the adjusting bolt according to the specifications of the workpiece to adapt to workpieces of more specifications; the angle positioning block is detachably fixed on the top of the mounting seat, the workpiece is sleeved outside the angle positioning block, and the top surface of the angle positioning block fits under the flange of the workpiece.

[0008] The first clamping assembly and the second clamping assembly can be detachably fixed on the bottom plate, which is convenient for installation and disassembly.

[0009] The first clamping assembly includes a movable plate, a hinge support, a pressure plate, a movable pressure block, a fixing screw, a rotating shaft, a second power source, a second power source joint, and a pin shaft. The movable plate can be detachably fixed to the bottom plate, and two spaced second power sources can be detachably fixed on the top of the movable plate, which is convenient for installation and disassembly, and convenient for workpiece specifications, and adjusting the installation position of the movable plate and the second power source. The free end of the second power source is vertically upward and fixed with the second power source joint. One end of the pressure plate is hinged to the second power source joint through a pin shaft. Specifically, one end of the pressure plate is provided with a U-shaped first hinge groove, and the second power source joint is arranged in the first hinge groove. Pin shaft holes that cooperate with the pin shaft are provided on the second power source joint and the first hinge groove. The hinge support is arranged on the left side of the second power source and It can be detachably fixed on the movable plate, and the bottom of the other end of the pressing plate is hinged to the hinge support through a rotating shaft. Specifically, the bottom of the other end of the pressing plate is provided with a downwardly protruding protrusion, and the top of the hinge support is provided with a second U-shaped hinge groove, the protrusion is arranged in the second hinge groove, and the protrusion and the second hinge groove are both provided with a rotating shaft hole matching the rotating shaft. A fixed groove is provided at the end of the other end of the pressing plate, and one end of the movable pressing block is detachably fixed in the fixed groove by a fixing screw. Specifically, the movable pressing block is L-shaped, and the movable pressing block includes a horizontal plate and a vertical plate, one end of the horizontal plate is arranged in the fixed groove, and the vertical plate is arranged at the other end of the horizontal plate. The left side of the vertical plate is used to fit with the right side of the workpiece for a pressing effect, and the left side of the vertical plate is provided with anti-slip grooves for an anti-slip effect.

[0010] The movable plate is provided with a first strip hole for adjusting the mounting position of the movable plate left and right and a second strip hole for adjusting the position of the two hinge supports and the second power source front and back. Specifically, the first strip hole and the second strip hole are relatively vertically arranged, and assembly bolts are provided in the first strip hole and the second strip hole. The movable plate can be removably fixed to the top of the base plate by the assembly bolts in the corresponding first strip holes. When it is necessary to adjust the left and right position of the movable plate along the base plate according to the specifications of the workpiece, loosen the assembly bolts in the first strip hole, move the movable plate to a suitable position in the left and right directions, and then tighten the assembly bolts to lock the position of the movable plate, so that the movable pressure block is pressed on the right side of the workpiece. The hinge support and the second power source can be removably fixed to the top of the movable plate by the assembly bolts in the corresponding second strip holes. When it is necessary to adjust the interval between the two second power sources according to the specifications of the workpiece, loosen the assembly bolts in the second strip hole, adjust the two second power sources and the corresponding hinge supports into place along the movable plate front and back, and then tighten the assembly bolts.

[0011] The second clamping assembly includes a third power source, a third power seat, a horizontal clamping block, and a connecting rod. The third power source is detachably fixed on the third power seat, and the third power seat is detachably fixed to the side of the base plate. One end of the connecting rod is detachably fixedly connected to the free end of the third power source, and the other end of the connecting rod is detachably fixedly connected to one end of the horizontal clamping block. A step is provided on the top of the other end of the horizontal clamping block for placing the reinforcing ribs at the bottom of the workpiece to play a positioning and supporting role. The top surface of the step is an inclined surface, and the end of the inclined surface of the step close to the workpiece is lower than the end away from the workpiece, so as to facilitate clamping with the bottom surface of the reinforcing ribs at the bottom of the workpiece. An avoidance groove is provided in the middle position of the top of the step to balance the clamping force of the horizontal clamping block. In addition, an inclined surface is provided on the upper part of the end of the step close to the workpiece, and the third power source drives the horizontal clamping block to move forward and backward through the connecting rod.

[0012] The first power source, the second power source and the third power source are preferably cylinders, and conventional telescopic devices such as hydraulic cylinders and electric push rods may also be used.

[0013] The angle positioning block is in the shape of a rectangular parallelepiped, and the top surface of the angle positioning block is an inclined surface. Raised positioning parts are provided at the four corners of the top of the angle positioning block. The top surface of the positioning part is an inclined surface parallel to the top surface of the angle positioning block. The top surface of the positioning part is used to fit with the corresponding part under the workpiece flange to play a positioning role.

[0014] The second positioning assembly also includes a first positioning pin, a second positioning pin, and a third positioning pin. The first positioning pin and the second positioning pin are fixed on the mounting seat, and the angle positioning block is respectively provided with positioning holes that cooperate with the first positioning pin and the second positioning pin; a third positioning pin is fixed on the top of the base, and the mounting seat is provided with a positioning hole corresponding to the third positioning pin; specifically, the first positioning pin and the third positioning pin are cylindrical pins, and the second positioning pin is a diamond pin.

[0015] The second positioning assembly also includes a locking nut, which is threadedly connected to the adjusting bolt. The outer side of the positioning shaft guide end cover is provided with a countersunk hole corresponding to the locking nut. The inner side of the locking nut is tightened in the countersunk hole to lock the position of the adjusting bolt. A threaded hole is provided in the middle of the outer end of the positioning shaft. The inner end of the adjusting bolt cooperates with the threaded hole. The axis of the positioning shaft and the axial direction of the adjusting bolt are on the same straight line. The adjusting bolt moves with the movement of the positioning shaft. The outer end of the adjusting bolt is used to tighten against the inner side of the reinforcement rib at the bottom of the workpiece. The two adjusting bolts are symmetrical about the central axis of the connecting shaft to play a role of symmetrical centering and positioning.

[0016] The second positioning assembly also includes a first end cover of the connecting shaft and a second end cover of the connecting shaft. The first end cover of the connecting shaft is detachably fixed to one end of the first sliding hole. The first end cover of the connecting shaft is provided with an end cover hole that cooperates with the connecting shaft. The second end cover of the connecting shaft is detachably fixed to the other end of the first sliding hole. The second end cover of the connecting shaft, the first end cover of the connecting shaft and the inner sides of the guide end cover of the positioning shaft are all provided with dustproof sealing rings. The mounting seat is provided with a sealing groove that cooperates with the dustproof sealing ring to play a sealing role. The first sliding hole is connected to the second sliding hole to form a cross-shaped circular moving channel. The dustproof sealing ring can prevent cutting fluid, iron filings and dust from entering the cross-shaped circular moving channel to avoid jamming in the movement of the connecting shaft and the two positioning shafts.

[0017] The second positioning assembly also includes a first power source connector and a C-shaped fixed connecting block, the first power source connector is fixed to the free end of the first power source, a connecting groove is provided at the right end of the first power source connector, and a connecting block and a slot are provided at the left end of the connecting shaft in sequence, the connecting block is arranged in the connecting groove, and there is a gap between the outer wall of the connecting block and the inner wall of the connecting groove, the fixed connecting block is clamped at the left side of the slot, and there is a gap between the fixed connecting block and the right side of the slot, and the fixed connecting block is detachably fixed to the first power source connector by screws, so as to realize the flexible connection between the connecting shaft and the first power source, and adapt to the assembly tolerances of the connecting shaft, the first end cover of the connecting shaft and other components, and in addition, the first power source connector and the connecting shaft can also be detachably fixedly connected, but the processing accuracy requirements for the connecting shaft, the first end cover of the connecting shaft and other components are relatively high.

[0018] The angle between the inclined surface on the connecting shaft and the central axis is an acute angle, the distance between the left end of the inclined surface and the central axis is greater than the distance between the right end and the central axis, and a connecting shaft limiting step is provided at the right end of the inclined surface to enhance the rigidity of the connecting shaft.

[0019] The beneficial effects of the present invention are: (1) The first positioning assembly and the second positioning assembly play a positioning role. The positioning pad of the first positioning assembly positions the left side of the workpiece. The first power source of the second positioning assembly drives the connecting shaft to extend and retract. The connecting shaft drives the symmetrical positioning shaft and the adjusting bolts on the positioning shaft to press against the inner side of the reinforcing rib at the bottom of the workpiece, thereby realizing automatic centering and positioning, automatically placing the workpiece in a suitable position, and facilitating the consistent center position of the workpiece each time, thereby improving positioning accuracy, reducing scrap rate, and improving product quality.

[0020] (2) The extension length of the adjusting bolt can be adjusted according to the specifications of the workpiece, which is convenient for processing special-shaped bracket products of various specifications and realizing the modular design of the positioning mechanism; the first clamping assembly and the second clamping assembly play the role of clamping the workpiece. The first clamping assembly and the second clamping assembly can be detachably fixed on the base plate, which is convenient for installation and disassembly, and is convenient for realizing the modular design of the clamping mechanism, reducing costs and facilitating material management. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the three-dimensional structure of the special-shaped bracket; Figure 2 It is a schematic diagram of the main structure of the special-shaped bracket; Figure 3 It is a schematic diagram of the structure of the present invention and the special-shaped bracket; Figure 4 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 5 It is a schematic diagram of the top view of the structure of the present invention; Figure 6 It is a schematic diagram of the main structure of the present invention; Figure 7 It is a schematic diagram of the local structure of the present invention; Figure 8 is a structural schematic diagram of a second clamping assembly; Fig. 9 is a structural schematic diagram of a second positioning component; Fig.10 is a schematic diagram of the structure of the mounting base; Fig.11 This is a schematic diagram of the structure of the angle positioning block (I); Fig.12 This is a schematic diagram of the structure of the angle positioning block (II); Fig.13 It is a structural schematic diagram of the movable plate; Fig.14 It is a structural schematic diagram of the positioning axis; Fig.15 It is a structural schematic diagram of the connecting shaft and the first power source joint; Fig.16 It is a cross-sectional view of the connecting shaft and the first power source joint.

[0022] In the figure: 1-flange top, 2-flange bottom, 3-reinforcement rib, 4-flange hole, 5-bottom plate, 6-first positioning assembly, 7-vertical plate, 8-positioning pad, 9-second positioning assembly, 10-first power source, 11-first power seat, 12-second clamping assembly, 13-movable pressure block, 14-fixed groove, 15-pressure plate, 16-hinge support, 17-second hinge groove, 18-first hinge groove, 19-pin shaft, 20-movable plate, 21-second power source joint, 22-second power source, 23-second strip hole, 24-first strip hole, 25-assembly bolt, 26-rotating shaft, 27-first clamping assembly, 28-horizontal pressure block, 29-third power source, 30-third power seat, 31-connecting rod, 32-second end cover of connecting shaft , 33-positioning part, 34-angle positioning block, 35-positioning shaft guide end cover, 36-mounting seat, 37-connecting shaft first end cover, 38-connecting shaft, 39-protrusion, 40-step step, 41-locking nut, 42-adjusting bolt, 43-vertical plate, 44-horizontal plate, 45-fixing screw, 46-base, 47-dustproof sealing ring, 48-connecting shaft limiting step, 49-third positioning pin, 50-positioning shaft, 51-limiting step, 52-spring, 53-second positioning pin, 54-first positioning pin, 55-card slot, 56-connecting block, 57-first power source connector, 58-fixed connecting block, 59-connecting groove, 60-first sliding hole, 61-sealing groove, 62-second sliding hole, 63-workpiece, 64-avoidance groove. DETAILED DESCRIPTION

[0023] like Figure 1-Figure 16 As shown, a modular and flexible symmetrical centering positioning clamping device for a special-shaped bracket includes a base plate 5, and the top of the base plate 5 is provided with a first positioning component 6, a second positioning component 9, and a first clamping component 27 from left to right, and the front and rear sides of the second positioning component 9 are symmetrically provided with a second clamping component 12, the first positioning component 6 and the second positioning component 9 play a positioning role, and the first clamping component 27 and the second clamping component 12 play a role of clamping the workpiece 63.

[0024] The first positioning assembly 6 includes a vertical plate 7 and a positioning pad 8. The vertical plate 7 is detachably fixed to the top of the bottom plate 5. Two symmetrical positioning pads 8 are detachably fixed on the right side of the vertical plate 7, which are used to fit with the left side of the workpiece 63 to play a positioning role. Specifically, the right side surface of the positioning pad 8 is provided with anti-slip grooves to facilitate the anti-slip effect. In order to enhance the stability of the vertical plate 7, a front-to-back symmetrical reinforcing plate is provided on the left side of the vertical plate 7. The right side of the reinforcing plate is detachably fixed to the left side of the vertical plate 7, and the bottom of the reinforcing plate is detachably fixed to the top of the bottom plate 5.

[0025] The second positioning assembly 9 includes a first power source 10, a first power seat 11, a base 46, a mounting seat 36, a connecting shaft 38, a spring 52, a positioning shaft 50, a positioning shaft guide end cover 35, an adjusting bolt 42, and an angle positioning block 34. The first power source 10 is detachably fixed on the first power seat 11, and the first power seat 11 is detachably fixed on the vertical plate 7. Specifically, the first power seat 11 is arranged between the two reinforcing plates on the left side of the vertical plate 7; the base 46 is arranged on the right side of the vertical plate 7 and is detachably fixed to the top of the bottom plate 5, and the mounting seat 36 is detachably fixed to the top of the base 46. A first sliding hole 60 is provided on the mounting seat 36, and the connecting shaft 38 is slidably connected in the first sliding hole 60. The left end of the connecting shaft 38 extends outside the first sliding hole 60 and is detachably connected to the free end of the first power source 10. Symmetrical positioning shafts 50 are provided on both sides of the connecting shaft 38, and an inclined surface matching the positioning shaft 50 is provided on the side of the connecting shaft 38. Specifically, the inner end surface of the positioning shaft 50 is an inclined surface and fits with the inclined surface of the connecting shaft 38. The mounting seat 36 is provided with second sliding holes 62 on both sides thereof which cooperate with the positioning shaft 50. The positioning shaft guide end cover 35 is arranged at the outer end of the second sliding hole 62 and is detachably fixedly connected to the mounting seat 36. The spring 52 is sleeved on the positioning shaft 50. Specifically, the positioning shaft 50 is a stepped shaft. The positioning shaft 50 is provided with a limiting step 51. The inner end of the spring 52 is pressed tightly against the limiting step 51. The outer end of the spring 52 is pressed tightly against the inner side of the positioning shaft guide end cover 35 to play a limiting role. The positioning shaft is realized by the rebound of the spring 52. 50 is automatically returned, the outer end of the positioning shaft 50 is arranged in the positioning shaft guide end cover 35 and is threadedly connected with the adjusting bolt 42, and the adjusting bolt 42 extends to the outside of the outer positioning shaft guide end cover 35 to play a positioning role, so that the extension length of the adjusting bolt 42 can be adjusted according to the specifications of the workpiece 63 to adapt to workpieces 63 of more specifications; the angle positioning block 34 can be detachably fixed on the top of the mounting seat 36, and the workpiece 63 is sleeved outside the angle positioning block 34, and the top surface of the angle positioning block 34 is in contact with the flange bottom 2 of the workpiece 63.

[0026] The first clamping assembly 27 and the second clamping assembly 12 can be detachably fixed on the bottom plate 5, so as to facilitate installation and disassembly.

[0027] The first clamping assembly 27 includes a movable plate 20, a hinge support 16, a pressure plate 15, a movable pressure block 13, a fixing screw 45, a rotating shaft 26, a second power source 22, a second power source connector 21, and a pin 19. The movable plate 20 is detachably fixed to the bottom plate 5. The top of the movable plate 20 is detachably fixed with two spaced second power sources 22, which is convenient for installation and disassembly, and convenient for the specifications of the workpiece 63. The installation position of the movable plate 20 and the second power source 22 is adjusted. The free end of the second power source 22 is vertically upward and fixed with the second power source connector 21. One end of the pressure plate 15 is hinged to the second power source connector 21 through the pin 19. Specifically, one end of the pressure plate 15 is provided with a U-shaped first hinge groove 18, and the second power source connector 21 is arranged in the first hinge groove 18. The second power source connector 21 and the first hinge groove 18 are both provided with a pin 19 hole that cooperates with the pin 19. The hinge support 16 is arranged on the left side of the second power source 22 The side is detachably fixed on the movable plate 20, and the bottom of the other end of the pressing plate 15 is hinged to the hinge support 16 through the rotating shaft 26. Specifically, the bottom of the other end of the pressing plate 15 is provided with a downwardly protruding protrusion 39, and the top of the hinge support 16 is provided with a U-shaped second hinge groove 17, and the protrusion 39 is arranged in the second hinge groove 17. The protrusion 39 and the second hinge groove 17 are both provided with a rotating shaft 26 hole that cooperates with the rotating shaft 26. The end of the other end of the pressing plate 15 is provided with a fixing groove 14, and one end of the movable pressing block 13 is detachably fixed in the fixing groove 14 by a fixing screw 45. The specific movable pressing block 13 is L-shaped, and the movable pressing block 13 includes a horizontal plate 44 and a vertical plate 43. One end of the horizontal plate 44 is arranged in the fixing groove 14, and the vertical plate 43 is arranged at the other end of the horizontal plate 44. The left side of the vertical plate 43 is used to fit with the right side of the workpiece 63 for pressing, and the left side of the vertical plate 43 is provided with anti-slip grooves for anti-slip.

[0028] The movable plate 20 is provided with a first strip hole 24 for adjusting the installation position of the movable plate 20 left and right, and a second strip hole 23 for adjusting the positions of the two hinge supports 16 and the second power source 22 front and back. Specifically, the first strip hole 24 and the second strip hole 23 are relatively vertically arranged, and the first strip hole 24 and the second strip hole 23 are both provided with assembly bolts 25. The movable plate 20 is detachably fixed to the top of the base plate 5 through the assembly bolts 25 in the corresponding first strip holes 24. When it is necessary to adjust the left and right position of the movable plate 20 along the base plate 5 according to the specifications of the workpiece 63, the assembly bolts 25 in the first strip holes 24 are loosened to move the movable plate 20 to the top of the base plate 5. After the plate 20 moves to a suitable position in the left-right direction, tighten the assembly bolts 25 to lock the position of the movable plate 20, so that the movable pressure block 13 can be pressed on the right side of the workpiece 63. The hinge support 16 and the second power source 22 are detachably fixed to the top of the movable plate 20 through the assembly bolts 25 in the corresponding second strip holes 23. When it is necessary to adjust the interval between the two second power sources 22 according to the specifications of the workpiece 63, loosen the assembly bolts 25 in the second strip holes 23, adjust the two second power sources 22 and the corresponding hinge supports 16 along the movable plate 20 to their proper positions, and then tighten the assembly bolts 25.

[0029] The second clamping assembly 12 includes a third power source 29, a third power seat 30, a horizontal pressing block 28, and a connecting rod 31. The third power source 29 is detachably fixed to the third power seat 30. The third power seat 30 is detachably fixed to the side of the bottom plate 5, that is, the third power seat 30 is detachably fixed to the front and rear sides of the bottom plate 5. One end of the connecting rod 31 is detachably fixedly connected to the free end of the third power source 29, and the other end of the connecting rod 31 is detachably fixedly connected to one end of the horizontal pressing block 28. The top of the other end of the horizontal pressing block 28 is provided with a step. 40 is used to place the reinforcing rib 3 at the bottom of the workpiece 63, and plays a positioning and supporting role. The top surface of the step step 40 is an inclined surface. The end of the inclined surface of the step step 40 close to the workpiece 63 is lower than the end away from the workpiece 63, which is convenient for clamping with the bottom surface of the reinforcing rib at the bottom of the workpiece. An avoidance groove 64 is provided in the middle position of the top of the step step to balance the clamping force of the horizontal clamping block. In addition, an inclined surface is provided on the upper part of the end of the step step 40 close to the workpiece 63. The third power source 29 drives the horizontal clamping block 28 to move forward and backward through the connecting rod 31.

[0030] The first power source 10, the second power source 22 and the third power source 29 are preferably cylinders, and conventional telescopic devices such as hydraulic cylinders and electric push rods may also be used.

[0031] The angle positioning block 34 is in the shape of a rectangular parallelepiped, and the top surface of the angle positioning block 34 is an inclined surface. Raised positioning parts 33 are provided at the four corners of the top of the angle positioning block 34. The top surface of the positioning part 33 is an inclined surface parallel to the top surface of the angle positioning block 34. The top surface of the positioning part 33 is used to fit with the corresponding part 2 under the flange of the workpiece 63 to play a positioning role.

[0032] The second positioning assembly 9 also includes a first positioning pin 54, a second positioning pin 53, and a third positioning pin 49. The first positioning pin 54 and the second positioning pin 53 are fixed on the mounting seat 36. The angle positioning block 34 is respectively provided with positioning holes that cooperate with the first positioning pin 54 and the second positioning pin 53, which play a positioning role and enable the angle positioning block 34 to be quickly replaced to achieve the positioning of various workpieces 63; a third positioning pin 49 is fixed on the top of the base 46, and a positioning hole corresponding to the third positioning pin 49 is provided on the mounting seat 36, which plays a positioning role and enables the mounting seat 36 to be quickly installed in place; specifically, the first positioning pin 54 and the third positioning pin 49 are cylindrical pins, and the second positioning pin 53 is a diamond pin.

[0033] The second positioning assembly 9 also includes a locking nut 41, which is threadedly connected to the adjusting bolt 42. The outer side of the positioning shaft guide end cover 35 is provided with a countersunk hole corresponding to the locking nut 41, and the inner side of the locking nut 41 is tightened in the countersunk hole to lock the position of the adjusting bolt 42; a threaded hole is provided in the middle of the outer end of the positioning shaft 50, and the inner end of the adjusting bolt 42 cooperates with the threaded hole. The axis of the positioning shaft 50 and the axial direction of the adjusting bolt 42 are on the same straight line, and the adjusting bolt 42 moves with the movement of the positioning shaft 50. The outer end of the adjusting bolt 42 is used to tighten against the inner side of the reinforcing rib 3 at the bottom of the workpiece 63. The two adjusting bolts 42 are symmetrical about the central axis of the connecting shaft 38, and play a role in symmetrical centering and positioning.

[0034] The second positioning assembly 9 also includes a first end cover 37 of the connecting shaft and a second end cover 32 of the connecting shaft. The first end cover 37 of the connecting shaft is detachably fixed to one end of the first sliding hole 60. The first end cover 37 of the connecting shaft is provided with an end cover hole that cooperates with the connecting shaft 38. The second end cover 32 of the connecting shaft is detachably fixed to the other end of the first sliding hole 60. The second end cover 32 of the connecting shaft, the first end cover 37 of the connecting shaft and the inner sides of the positioning shaft guide end cover 35 are all provided with a dustproof sealing ring 47. The mounting seat 36 is provided with a sealing groove 61 that cooperates with the dustproof sealing ring 47 to play a sealing role. The first sliding hole 60 is connected to the second sliding hole 62 to form a cross-shaped circular moving channel. The dustproof sealing ring 47 can prevent cutting fluid, iron filings and dust from entering the cross-shaped circular moving channel, thereby avoiding jamming in the movement of the connecting shaft 38 and the two positioning shafts 50.

[0035] The second positioning assembly 9 also includes a first power source connector 57 and a C-shaped fixed connection block 58. The first power source connector 57 is fixed to the free end of the first power source 10. A connecting groove 59 is provided at the right end of the first power source connector 57. A connecting block 56 and a slot 55 are provided at the left end of the connecting shaft 38 in sequence. The connecting block 56 is arranged in the connecting groove 59. There is a gap between the outer wall of the connecting block 56 and the inner wall of the connecting groove 59. The fixed connection block 58 is clamped at the left side of the slot 55. There is a gap between the fixed connection block 58 and the right side of the slot 55. The fixed connection block 58 is detachably fixed to the first power source connector 57 by screws, so as to realize the flexible connection between the connecting shaft 38 and the first power source 10, and adapt to the assembly tolerances of the connecting shaft 38, the first end cover 37 of the connecting shaft and other components. In addition, the first power source connector 57 and the connecting shaft 38 can also be detachably fixedly connected, but the processing accuracy requirements for the connecting shaft 38, the first end cover 37 of the connecting shaft and other components are relatively high.

[0036] The angle between the inclined surface on the connecting shaft 38 and the central axis is an acute angle. The distance between the left end of the inclined surface and the central axis is greater than the distance between the right end and the central axis. A connecting shaft limiting step 48 is provided at the right end of the inclined surface to enhance the rigidity of the connecting shaft 38.

[0037] The method of use of the present invention is as follows: The first step: removably fix the base plate 5 on the processing table, and adjust the extension length of the adjusting bolts 42 on the two positioning shafts 50 according to the specifications of the workpiece 63, so that the distances from the outer end surfaces of the two adjusting bolts 42 to the axial center plane of the connecting shaft 38 are the same, thereby ensuring the symmetrical positioning and centering accuracy; according to the specifications of the workpiece 63, adjust the positions of the movable plate 20 and the second power source 22 into place, so that the movable pressure block 13 can be pressed onto the right side of the workpiece 63 to play a clamping role.

[0038] Step 2: Set the workpiece 63 on the angle positioning block 34 so that the bottom surface 2 of the flange of the workpiece 63 fits with the top surface of the angle positioning block 34, and the reinforcing ribs 3 on the left and right sides of the bottom of the workpiece 63 are respectively set on the front and rear sides of the angle positioning block 34, corresponding to the two adjusting bolts 42.

[0039] Step 3: The first power source 10 works, and the first power source 10 drives the connecting shaft 38 to extend. Through the inclined surface setting on the connecting shaft 38, the connecting shaft 38 drives the two positioning shafts 50 to move. The two positioning shafts 50 move in opposite directions to squeeze the corresponding springs 52. The positioning shafts 50 drive the corresponding adjusting bolts 42 to move at the same time. When the outer end faces of the adjusting bolts 42 contact the two inner surfaces of the reinforcing rib 3, the centers of the two inner surfaces of the reinforcing rib 3 of the special-shaped bracket are automatically determined, and the position of the workpiece 63 is determined, so that the center position of the workpiece 63 can be consistent each time it is placed.

[0040] Step 4: The second power source 22 works and extends, and drives the movable pressing block 13 to rotate downward and press on the right side of the workpiece 63 through the pressing plate 15; the third power source 29 works synchronously and extends, and drives the horizontal pressing block 28 to move toward the side of the workpiece 63 through the connecting rod 31 until it is pressed against the side of the workpiece 63; the pressing operation of the workpiece 63 is completed, and the processing of the workpiece 63 begins.

[0041] Step 5: After the flange hole 4 of the workpiece 63 is processed, the second power source 22 and the third power source 29 work, and both shrink, respectively driving the movable pressure block 13 and the horizontal clamping block 28 away from the workpiece 63; the first power source 10 works, and the first power source 10 drives the connecting shaft 38 to shrink, and the connecting shaft 38 drives the two positioning shafts 50 to move, and the two positioning shafts 50 move in the direction of approaching, the spring 52 rebounds, and the positioning shaft 50 and the adjusting bolt 42 return to the initial position, and the processed workpiece 63 is removed.

[0042] The workpiece 63 of the present invention is a special-shaped bracket, which is mainly used as a spring 52 pressure plate 15, such as Figure 1 and Figure 2 As shown, one type of special-shaped bracket has been processed with the flange hole 4, the upper flange 1 and the lower flange 2 are at an angle, and reinforcing ribs 3 are provided on the left and right sides of the lower flange 2.

[0043] The detachable fixed connection described in the present invention preferably adopts bolts or screws to achieve the detachable fixed connection.

[0044] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the 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 a limitation on the present invention.

[0045] The above embodiments are intended to illustrate the present invention, not to limit the present invention. Any solution that is a simple transformation of the present invention belongs to the protection scope of the present invention.

Claims

1. A modular and flexible symmetrical centering and positioning clamping device for a special-shaped bracket, comprising a base plate, characterized in that: The top of the bottom plate is provided with a first positioning assembly, a second positioning assembly, and a first clamping assembly from left to right in sequence, and the second clamping assembly is symmetrically provided on the front and rear sides of the second positioning assembly; The first positioning assembly includes a vertical plate and a positioning pad. The vertical plate is detachably fixed to the top of the bottom plate, and two symmetrical positioning pads are detachably fixed to the right side of the vertical plate. The second positioning assembly includes a first power source, a first power seat, a base, a mounting seat, a connecting shaft, a spring, a positioning shaft, a positioning shaft guide end cover, an adjusting bolt, and an angle positioning block. The first power source is detachably fixed to the first power seat, and the first power seat is detachably fixed to the vertical plate; the base is arranged on the right side of the vertical plate and is detachably fixed to the top of the bottom plate, the mounting seat is detachably fixed to the top of the base, a first sliding hole is provided on the mounting seat, the connecting shaft is slidably connected to the first sliding hole, the left end of the connecting shaft extends outside the first sliding hole and is detachably connected to the free end of the first power source, and both sides of the connecting shaft A symmetrical positioning shaft is provided, an inclined surface matching the positioning shaft is provided on the side of the connecting shaft, second sliding holes matching the positioning shaft are provided on both sides of the mounting seat, the positioning shaft guide end cover is arranged at the outer end of the second sliding hole and is detachably fixedly connected to the mounting seat, a spring sleeve is arranged on the positioning shaft, a limiting step is provided on the positioning shaft, the inner end of the spring is pressed tightly against the limiting step, the outer end of the spring is pressed tightly against the inner side of the positioning shaft guide end cover, the outer end of the positioning shaft is arranged in the positioning shaft guide end cover and is threadedly connected with the adjusting bolt, and the adjusting bolt extends to the outside of the outer positioning shaft guide end cover; the angle positioning block is detachably fixed to the top of the mounting seat; The first clamping assembly and the second clamping assembly can be detachably fixed on the bottom plate.

2. The modular and flexible symmetrical centering and positioning clamping device for special-shaped brackets according to claim 1, characterized in that: The first clamping assembly includes a movable plate, a hinge support, a pressure plate, a movable pressure block, a fixing screw, a rotating shaft, a second power source, a second power source connector, and a pin shaft. The movable plate is detachably fixed to the base plate, and the top of the movable plate is detachably fixed with two spaced second power sources. The free end of the second power source is vertically upward and fixed with a second power source connector. One end of the pressure plate is hinged to the second power source connector through a pin shaft. The hinge support is arranged on the left side of the second power source and is detachably fixed to the movable plate. The bottom of the other end of the pressure plate is hinged to the hinge support through a rotating shaft. The end of the other end of the pressure plate is provided with a fixing groove, and one end of the movable pressure block is detachably fixed in the fixing groove through a fixing screw.

3. The modular and flexible symmetrical centering and positioning clamping device for special-shaped brackets according to claim 2, characterized in that: The movable plate is provided with a first strip hole for adjusting the installation position of the movable plate left and right, and a second strip hole for adjusting the positions of the two hinge supports and the second power source front and back. Assembly bolts are provided in the first strip hole and the second strip hole. The movable plate is removably fixed to the top of the base plate by the corresponding assembly bolts in the first strip hole, and the hinge support and the second power source are removably fixed to the top of the movable plate by the corresponding assembly bolts in the second strip hole.

4. The modular and flexible symmetrical centering and positioning clamping device for special-shaped brackets according to claim 1, characterized in that: The second clamping assembly includes a third power source, a third power seat, a horizontal pressing block, and a connecting rod. The third power source is detachably fixed on the third power seat, and the third power seat is detachably fixed to the side of the base plate. One end of the connecting rod is detachably fixedly connected to the free end of the third power source, and the other end of the connecting rod is detachably fixedly connected to one end of the horizontal pressing block. A step is provided at the top of the other end of the horizontal pressing block, and the top surface of the step is an inclined surface. An avoidance groove is provided at the middle position of the top of the step.

5. The modular and flexible symmetrical centering and positioning clamping device for special-shaped brackets according to claim 1, characterized in that: The angle positioning block is in a rectangular shape, the top surface of the angle positioning block is an inclined surface, and raised positioning parts are provided at the four corners of the top of the angle positioning block. The top surface of the positioning part is an inclined surface parallel to the top surface of the angle positioning block.

6. The modular and flexible symmetrical centering and positioning clamping device for special-shaped brackets according to claim 1, characterized in that: The second positioning assembly also includes a first positioning pin, a second positioning pin, and a third positioning pin. The first positioning pin and the second positioning pin are fixed on the mounting seat, and the angle positioning block is respectively provided with positioning holes that cooperate with the first positioning pin and the second positioning pin; a third positioning pin is fixed on the top of the base, and a positioning hole corresponding to the third positioning pin is provided on the mounting seat.

7. The modular and flexible symmetrical centering and positioning clamping device for special-shaped brackets according to claim 1, characterized in that: The second positioning assembly also includes a locking nut, which is threadedly connected to the adjusting bolt. The outer side of the positioning shaft guide end cover is provided with a countersunk hole corresponding to the locking nut, and the inner side of the locking nut is tightened in the countersunk hole. A threaded hole is provided in the middle of the outer end of the positioning shaft, and the inner end of the adjusting bolt cooperates with the threaded hole. The axis of the positioning shaft and the axial direction of the adjusting bolt are on the same straight line.

8. The modular and flexible symmetrical centering and positioning clamping device for special-shaped brackets according to claim 1, characterized in that: The second positioning assembly also includes a first end cover of the connecting shaft and a second end cover of the connecting shaft. The first end cover of the connecting shaft is removably fixed to one end of the first sliding hole. The first end cover of the connecting shaft is provided with an end cover hole that cooperates with the connecting shaft. The second end cover of the connecting shaft is removably fixed to the other end of the first sliding hole. The second end cover of the connecting shaft, the first end cover of the connecting shaft and the inner sides of the guide end cover of the positioning shaft are all provided with dustproof sealing rings, and the mounting seat is provided with a sealing groove that cooperates with the dustproof sealing ring.

9. The modular and flexible symmetrical centering and positioning clamping device for special-shaped brackets according to claim 8, characterized in that: The second positioning assembly also includes a first power source connector and a C-shaped fixed connecting block, the first power source connector is fixed to the free end of the first power source, a connecting groove is provided at the right end of the first power source connector, a connecting block and a slot are provided at the left end of the connecting shaft in sequence, the connecting block is arranged in the connecting groove, there is a gap between the outer wall of the connecting block and the inner wall of the connecting groove, the fixed connecting block is clamped at the left side of the slot, there is a gap between the fixed connecting block and the right side of the slot, and the fixed connecting block is detachably fixed to the first power source connector by screws.

10. The modular and flexible symmetrical centering and positioning clamping device for special-shaped brackets according to claim 1, characterized in that: The angle between the inclined surface on the connecting shaft and the central axis is an acute angle, the distance between the left end of the inclined surface and the central axis is greater than the distance between the right end and the central axis, and the right end of the inclined surface is provided with a connecting shaft limiting step.

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