A modular and flexible symmetric centering and positioning clamping device for special-shaped support

Abstract

The application discloses a special-shaped support modularization and flexible symmetrical centering and positioning clamping device, which comprises a bottom plate, and first positioning assemblies and first clamping assemblies are sequentially arranged on the top of the bottom plate from left to right; second positioning assemblies and second clamping assemblies are symmetrically arranged on the front and back sides of the second positioning assemblies; the first positioning assembly comprises a vertical plate and positioning pads; the vertical plate is detachably fixed on the top of the bottom plate, and two symmetrical positioning pads are detachably fixed on 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, a positioning shaft, a positioning shaft guide end cover, an adjusting bolt and an angle positioning block; the connecting shaft is provided with symmetrical positioning shafts on both sides; the side surface of the connecting shaft is provided with an inclined surface matched with the positioning shaft; the first power source drives the positioning shaft to move through the connecting shaft; and the first clamping assemblies and the second clamping assemblies are detachably fixed on the bottom plate. The application can meet the processing of various special-shaped support products, improve positioning accuracy and reduce cost.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of mechanical manufacturing and processing, in particular to a modular and flexible symmetrical centering, positioning and clamping device for special-shaped brackets. BACKGROUND

[0002] As shown in the special-shaped bracket shown in Figure 1 and Figure 2 , mainly as a spring pressing plate, when processing the flange hole, the left and right reinforcing ribs under the flange are used to position the height and left and right positions of the workpiece, the upper surface of the flange has an angle with the lower surface of the flange, and the center of the light hole connecting line of the flange surface has a position tolerance requirement relative to the inside distance dimension center of the left and right reinforcing ribs of the lower surface of the flange. Because the blank of the special-shaped bracket has a manufacturing tolerance, the blank is cleaned using a hydraulic pressure clamp, which can cause deformation of the reinforcing ribs, resulting in a large change in the inside distance dimension of the reinforcing ribs, a large change in the height dimension of the reinforcing ribs relative to the upper surface of the flange, and a large fluctuation in the position deviation of the light hole of the flange surface relative to the outside shape, making it difficult to guarantee the size tolerance and angle tolerance of the center of the light hole connecting line of the flange surface relative to the inside distance dimension center of the reinforcing ribs of the lower surface of the flange, and the thickness of the flange surface is not uniform, making it difficult to stably guarantee the depth of the lower surface of the flange, which seriously affects the processing quality and assembly performance of the bracket. In use, the following disadvantages exist:

[0003] The conventional hydraulic synchronous centering mechanism, two-jaw chuck synchronous centering mechanism, and vice synchronous centering mechanism have a large size, are limited by size space, have high cost, and have poor use effect.

[0004] The special-shaped bracket is a series of similar structure products, the flange angle is different, the bracket outer contour size is different, and a plurality of different specifications of clamps need to be used, which has high cost, takes a long time to assemble and disassemble, and results in low processing efficiency. SUMMARY

[0005] The present application aims to provide a modular and flexible symmetrical centering, positioning and clamping device for special-shaped brackets, which can meet the processing of a plurality of specifications of special-shaped bracket products, improve positioning accuracy, and reduce cost.

[0006] The technical scheme adopted by the present application is as follows:

[0007] A modular and flexible symmetrical centering, positioning and clamping device for special-shaped brackets, comprising a bottom plate, a first positioning assembly, a second positioning assembly and a first clamping assembly are arranged on the top of the bottom plate, the first clamping assembly is arranged on the right side of the second positioning assembly, and the second clamping assembly is symmetrically arranged on the front and back sides of the second positioning assembly, the first positioning assembly and the second positioning assembly serve as positioning assemblies, and the first clamping assembly and the second clamping assembly serve as clamping assemblies for workpieces.

[0008] The first positioning assembly comprises a vertical plate and positioning pads, the vertical plate is detachably fixed on the top of the base plate, two symmetrical positioning pads are detachably fixed on the right side of the vertical plate, used for being attached to the left side of the workpiece to play a positioning role, and the right side surface of the positioning pad is provided with anti-skid lines to facilitate anti-skid effect.

[0009] The second positioning assembly comprises 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 on the first power seat, and the first power seat is detachably fixed on the vertical plate; the base is arranged on the right side of the vertical plate and detachably fixed on the top of the base plate, the mounting seat is detachably fixed on the top of the base, the mounting seat is provided with a first sliding hole, the connecting shaft is slidably connected in the first sliding hole, the left end of the connecting shaft extends out of the first sliding hole and is detachably connected with the free end of the first power source, the connecting shaft is provided with symmetrical positioning shafts on both sides, the side surface of the connecting shaft is provided with an inclined surface matched with the positioning shaft, specifically, the inner end surface of the positioning shaft is an inclined surface and is attached to the inclined surface of the connecting shaft, the mounting seat is provided with a second sliding hole matched with the positioning shaft on each side, the positioning shaft guide end cover is arranged at the outer end of the second sliding hole and detachably fixedly connected with the mounting seat, the spring is sleeved on the positioning shaft, specifically, the positioning shaft is a stepped shaft, the positioning shaft is provided with a limiting step, the inner end of the spring is tightly pressed at the limiting step, the outer end of the spring is tightly pressed in the inner side of the positioning shaft guide end cover to play a limiting role, through the rebound of the spring, the automatic return of the positioning shaft is realized, the outer end of the positioning shaft is arranged in the positioning shaft guide end cover and is threadedly connected with the adjusting bolt, the adjusting bolt extends out of the outer positioning shaft guide end cover to play a positioning role, so that the extension length of the adjusting bolt can be adjusted 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 is attached to the lower surface of the flange of the workpiece.

[0010] The first clamping assembly and the second clamping assembly are detachably fixed on the base plate, facilitating installation and disassembly.

[0011] The first clamping assembly comprises a movable plate, a hinge support, a pressing plate, a movable pressing 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 on the bottom plate. The top of the movable plate is detachably fixed with two spaced second power sources, facilitating installation and disassembly, and facilitating workpiece specifications. The installation positions of the movable plate and the second power sources are adjusted. The free end of the second power source is vertically upward and fixed with the second power source connector. One end of the pressing plate is hingedly connected with the second power source connector through the pin shaft. Specifically, the one end of the pressing plate is provided with a U-shaped first hinge groove. The second power source connector is arranged in the first hinge groove. The second power source connector and the first hinge groove are both provided with pin shaft holes matched with the pin shaft. The hinge support is arranged on the left side of the second power source and is detachably fixed on the movable plate. The bottom of the other end of the pressing plate is hingedly connected with the hinge support through the rotating shaft. Specifically, the bottom of the other end of the pressing plate is provided with a downward protruding protruding portion. The top of the hinge support is provided with a U-shaped second hinge groove. The protruding portion is arranged in the second hinge groove. The protruding portion and the second hinge groove are both provided with rotating shaft holes matched with the rotating shaft. The end of the other end of the pressing plate is provided with a fixing groove. One end of the movable pressing block is detachably fixed in the fixing groove through the fixing screw. Specifically, the movable pressing block is L-shaped. The movable pressing block comprises a horizontal plate and a vertical plate. One end of the horizontal plate is arranged in the fixing groove. The vertical plate is arranged at the other end of the horizontal plate. The left side of the vertical plate is used to abut against the right side of the workpiece, playing a pressing role. The left side of the vertical plate is provided with anti-skid lines, playing an anti-skid role.

[0012] A first slot and a second slot are arranged on the movable plate. The first slot is used to adjust the installation position of the movable plate left and right. The second slot is used to adjust the positions of the two hinge supports and the second power source front and back. Specifically, the first slot and the second slot are arranged vertically opposite to each other. Assembly bolts are arranged in the first slot and the second slot. The movable plate is detachably fixed on the top of the bottom plate through the assembly bolts in the corresponding first slot. When it is necessary to adjust the left and right positions of the movable plate along the bottom plate according to the specifications of the workpiece, the assembly bolts in the first slot are loosened. After the movable plate is moved to the appropriate position along the left and right direction, the assembly bolts are tightened again to lock the position of the movable plate. The movable pressing block is pressed against the right side of the workpiece. The hinge supports and the second power source are detachably fixed on the top of the movable plate through the assembly bolts in the corresponding second slot. When it is necessary to adjust the interval of the two second power sources according to the specifications of the workpiece, the assembly bolts in the second slot are loosened. After the two second power sources and the corresponding hinge supports are adjusted to the positions front and back along the movable plate, the assembly bolts are tightened again.

[0013] The second clamping assembly comprises 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, the third power seat is detachably fixed on the side of the bottom plate, one end of the connecting rod is detachably fixedly connected with the free end of the third power source, the other end of the connecting rod is detachably fixedly connected with one end of the horizontal pressing block, the other end of the horizontal pressing block is provided with a stepped step on the top, used for placing the reinforcing rib at the bottom of the workpiece, and the stepped step plays a positioning and supporting role, the top surface of the stepped step is an inclined surface, the end of the inclined surface of the stepped step close to the workpiece is lower than the end of the inclined surface of the stepped step away from the workpiece, so that the horizontal pressing block is clamped with the bottom surface of the reinforcing rib at the bottom of the workpiece, the top middle position of the stepped step is provided with a avoiding slot, which can balance the clamping force of the horizontal pressing block, in addition, the upper part of the end of the stepped step close to the workpiece is provided with an inclined surface, and the third power source drives the horizontal pressing block to move forward and backward through the connecting rod.

[0014] The first power source, the second power source and the third power source are preferably selected from cylinders, and can also be selected from conventional telescopic devices such as hydraulic cylinders and electric push rods.

[0015] The angle positioning block is in the shape of a cuboid, the top surface of the angle positioning block is an inclined surface, the four corners of the top of the angle positioning block are provided with protruding positioning portions, the top surface of the positioning portion is an inclined surface parallel to the top surface of the angle positioning block, and the top surface of the positioning portion is used for abutting the corresponding part below the flange of the workpiece, thereby playing a positioning role.

[0016] The second positioning assembly further comprises 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 matched with the first positioning pin and the second positioning pin; the 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 rhombic pin.

[0017] The second positioning assembly further comprises a locking nut, the locking nut is threadedly connected on 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 tightly arranged in the counterbore, and the locking nut is used for locking the position of the adjusting bolt; the outer end of the positioning shaft is provided with a threaded hole, the inner end of the adjusting bolt is matched 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, and the outer end of the adjusting bolt is used for tightly abutting the inner side of the reinforcing rib at the bottom of the workpiece; the two adjusting bolts are symmetrical about the central axis of the connecting shaft, thereby playing a symmetrical centering and positioning role.

[0018] The second positioning assembly further comprises a connecting shaft first end cover and a connecting shaft second end cover, the connecting shaft first end cover is detachably fixed at one end of the first sliding hole, the connecting shaft first end cover is provided with an end cover hole matched with the connecting shaft, and the connecting shaft second end cover is detachably fixed at the other end of the first sliding hole; the inner sides of the connecting shaft second end cover, the connecting shaft first end cover and the positioning shaft guide end cover are all provided with dustproof sealing rings, the mounting seat is provided with sealing grooves matched with the dustproof sealing rings, and the dustproof sealing rings can prevent cutting chip liquid, iron filings and dust from entering the cross-shaped circular moving channel, so that the movement of the connecting shaft and the two positioning shafts is prevented from being blocked.

[0019] The second positioning assembly further comprises a first power source connector and a C-shaped fixed connecting block, the first power source connector is fixed at the free end of the first power source, the right end of the first power source connector is provided with a connecting groove, the left end of the connecting shaft is sequentially provided with a connecting block and a clamping groove, 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 clamping groove, and there is a gap between the fixed connecting block and the right side of the clamping groove; the fixed connecting block is detachably fixed on the first power source connector through screws, flexible connection between the connecting shaft and the first power source is realized, and the assembly tolerances of the connecting shaft, the connecting shaft first end cover and other components are adaptively connected.

[0020] 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 of the inclined surface and the central axis, and the right end of the inclined surface is provided with a connecting shaft limiting step, so that the rigidity of the connecting shaft is enhanced.

[0021] The beneficial effects of the present application are as follows:

[0022] The first positioning assembly and the second positioning assembly have a positioning effect, the positioning pad block 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 stretch and retract, the connecting shaft drives the symmetrical positioning shafts and the adjusting bolts on the positioning shafts to be tightly pressed on the inner side of the bottom reinforcing rib of the workpiece, automatic centering and positioning are realized, the workpiece is automatically placed in a suitable position, the center position of the workpiece is consistent each time, the positioning accuracy is improved, the waste rate is reduced, and the product quality is improved.

[0023] The extension length of the adjusting bolt can be adjusted according to the specifications of the workpiece, so that various specifications of special-shaped support products can be processed, and the modular design of the positioning mechanism is realized; the first clamping assembly and the second clamping assembly have the effect of clamping the workpiece, and the first clamping assembly and the second clamping assembly are detachably fixed on the bottom plate, so that installation and disassembly are facilitated, the modular design of the clamping mechanism is realized, the cost is reduced, and material management is facilitated. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 isometric view of the special-shaped bracket;

[0025] Figure 2 front view of the special-shaped bracket;

[0026] Figure 3 structure of the present application and the special-shaped bracket;

[0027] Figure 4 isometric view of the present application;

[0028] Figure 5 top view of the present application;

[0029] Figure 6 front view of the present application;

[0030] Figure 7 partial view of the present application;

[0031] Figure 8 structure of the second clamping assembly;

[0032] Figure 9 structure of the second positioning assembly;

[0033] Figure 10 structure of the mounting seat;

[0034] Figure 11 structure of the angle positioning block (1);

[0035] Figure 12 structure of the angle positioning block (2);

[0036] Figure 13 structure of the movable plate;

[0037] Figure 14 structure of the positioning shaft;

[0038] Figure 15 structure of the connecting shaft and the first power source joint;

[0039] Figure 16 cross-sectional view of the connecting shaft and the first power source joint.

[0040] In the diagram: 1-Flange top, 2-Flange bottom, 3-Reinforcing rib, 4-Flange hole, 5-Base plate, 6-First positioning assembly, 7-Upright plate, 8-Positioning pad, 9-Second positioning assembly, 10-First power source, 11-First power seat, 12-Second clamping assembly, 13-Modible pressure block, 14-Fixing groove, 15-Pressure plate, 16-Hinge support, 17-Second hinge groove, 18-First hinge groove, 19-Pin, 20-Modible plate, 21-Second power source connector, 22-Second power source, 23-Second slot, 24-First slot, 25-Assembly bolt, 26-Rotating shaft, 27-First clamping assembly, 28-Horizontal clamping block, 29-Third power source, 30-Third power seat, 31-Connecting rod, 32-Second end cap of connecting shaft 33-Positioning part, 34-Angle positioning block, 35-Positioning shaft guide end cover, 36-Mounting base, 37-Connecting shaft first end cover, 38-Connecting shaft, 39-Protrusion, 40-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-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-Allowing groove. Detailed Implementation

[0041] like Figures 1-16 As shown, a modular and flexible symmetrical centering and clamping device for irregular brackets includes a base plate 5. 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. The first clamping component 27 is located to the right of the second positioning component 9. The front and rear sides of the second positioning component 9 are symmetrically provided with second clamping components 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 clamping role for the workpiece 63.

[0042] The first positioning component 6 includes a vertical plate 7 and positioning pads 8. The vertical plate 7 is detachably fixed to the top of the base plate 5. Two symmetrical positioning pads 8 are detachably fixed to the right side of the vertical plate 7 for fitting with the left side of the workpiece 63 and for positioning. Specifically, the right side of the positioning pads 8 is provided with anti-slip texture to facilitate anti-slip. To enhance the stability of the vertical plate 7, symmetrical reinforcing plates are provided on the left side of the vertical plate 7. The right sides of the reinforcing plates are detachably fixed to the left side of the vertical plate 7, and the bottom of the reinforcing plates is detachably fixed to the top of the base plate 5.

[0043] The second positioning assembly 9 comprises 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 detachably fixed on the top of the bottom plate 5. The mounting seat 36 is detachably fixed on the top of the base 46. The mounting seat 36 is provided with a first sliding hole 60. The connecting shaft 38 is slidingly connected in the first sliding hole 60. The left end of the connecting shaft 38 extends out of the first sliding hole 60 and is detachably connected with the free end of the first power source 10. The connecting shaft 38 is provided with symmetrical positioning shafts 50 on both sides. The side surface of the connecting shaft 38 is provided with an inclined surface matched with the positioning shaft 50. Specifically, the inner end surface of the positioning shaft 50 is an inclined surface and is matched with the inclined surface of the connecting shaft 38. The mounting seat 36 is provided with a second sliding hole 62 matched with the positioning shaft 50 on each side. The positioning shaft guide end cover 35 is arranged at the outer end of the second sliding hole 62 and is detachably fixedly connected with 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 tightly pressed at the limiting step 51. The outer end of the spring 52 is tightly pressed in the inner side of the positioning shaft guide end cover 35, thereby limiting. Through the rebound of the spring 52, the automatic return of the positioning shaft 50 is realized. 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. The adjusting bolt 42 extends out of the outer positioning shaft guide end cover 35, thereby positioning. It is convenient to adjust the extension length of the adjusting bolt 42 according to the specifications of the workpiece 63, so as to adapt to more specifications of the workpiece 63. The angle positioning block 34 is detachably fixed on the top of the mounting seat 36. The workpiece 63 is sleeved outside the angle positioning block 34. The top surface of the angle positioning block 34 is matched with the lower surface of the flange of the workpiece 63.

[0044] The first clamping assembly 27 and the second clamping assembly 12 are detachably fixed on the bottom plate 5, thereby facilitating installation and disassembly.

[0045] The first clamping assembly 27 comprises the movable plate 20, the hinge support 16, the pressing plate 15, the movable pressing block 13, the fixing screw 45, the rotating shaft 26, the second power source 22, the second power source joint 21 and the pin shaft 19. The movable plate 20 is detachably fixed on the bottom plate 5. The top of the movable plate 20 is detachably fixed with two spaced second power sources 22, which facilitates installation and disassembly and the workpiece 63 specification. The installation positions of the movable plate 20 and the second power source 22 are adjusted. The free end of the second power source 22 is vertically upward and fixed with the second power source joint 21. One end of the pressing plate 15 is hingedly connected with the second power source joint 21 through the pin shaft 19. Specifically, the one end of the pressing plate 15 is provided with a U-shaped first hinge groove 18, and the second power source joint 21 is arranged in the first hinge groove 18. The second power source joint 21 and the first hinge groove 18 are both provided with a pin shaft 19 hole matched with the pin shaft 19. The hinge support 16 is arranged on the left side of the second power source 22 and detachably fixed on the movable plate 20. The other end of the pressing plate 15 is hingedly connected with the hinge support 16 through the rotating shaft 26. Specifically, the other end of the pressing plate 15 is provided with a downward protruding protruding portion 39. The top of the hinge support 16 is provided with a U-shaped second hinge groove 17. The protruding portion 39 is arranged in the second hinge groove 17. The protruding portion 39 and the second hinge groove 17 are both provided with a rotating shaft 26 hole matched with the rotating shaft 26. The other end of the pressing plate 15 is provided with a fixed groove 14. One end of the movable pressing block 13 is detachably fixed in the fixed groove 14 through the fixing screw 45. Specifically, the movable pressing block 13 is L-shaped. The movable pressing block 13 comprises a horizontal plate 44 and a vertical plate 43. One end of the horizontal plate 44 is arranged in the fixed groove 14. 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 for abutting against the right side of the workpiece 63, thereby playing a pressing role. The left side of the vertical plate 43 is provided with anti-skid lines, thereby playing an anti-skid role.

[0046] The first strip hole 24 and the second strip hole 23 are arranged vertically, and the first strip hole 24 and the second strip hole 23 are provided with assembly bolts 25. The movable plate 20 is detachably fixed to the top of the bottom plate 5 through the assembly bolts 25 in the corresponding first strip hole 24. When the position of the movable plate 20 along the bottom plate 5 needs to be adjusted according to the specifications of the workpiece 63, the assembly bolts 25 in the first strip hole 24 are loosened, the movable plate 20 is moved to the appropriate position in the left-right direction, and then the assembly bolts 25 are tightened to lock the position of the movable plate 20, so that the movable pressing block 13 is pressed against 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 hole 23. When the spacing between the two second power sources 22 needs to be adjusted according to the specifications of the workpiece 63, the assembly bolts 25 in the second strip hole 23 are loosened, the two second power sources 22 and the corresponding hinge supports 16 are adjusted to the appropriate position in the front-back direction of the movable plate 20, and then the assembly bolts 25 are tightened.

[0047] The second clamping assembly 12 comprises 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, and the third power seat 30 is detachably fixed to the side of the bottom plate 5, i.e., the third power seat 30 is detachably fixed to the front and back sides of the bottom plate 5. One end of the connecting rod 31 is detachably connected with the free end of the third power source 29, and the other end of the connecting rod 31 is detachably connected with one end of the horizontal pressing block 28. The other end of the horizontal pressing block 28 is provided with a stepped step 40 on the top for placing the reinforcing rib 3 at the bottom of the workpiece 63, which serves as a positioning support. The top surface of the stepped step 40 is an inclined surface, and the end of the inclined surface of the stepped step 40 close to the workpiece 63 is lower than the end away from the workpiece 63, which facilitates cooperation and clamping with the bottom surface of the reinforcing rib at the bottom of the workpiece. The top of the stepped step is provided with a clearance groove 64 in the middle position, which can balance the clamping force of the horizontal clamping block. In addition, the upper part of the end of the stepped step 40 close to the workpiece 63 is provided with an inclined surface, and the third power source 29 drives the horizontal pressing block 28 to move forward and backward through the connecting rod 31.

[0048] The first power source 10, the second power source 22, and the third power source 29 are preferably selected from air cylinders, and can also be selected from conventional telescopic devices such as hydraulic cylinders and electric push rods.

[0049] The angle positioning block 34 is in the shape of a cuboid, the top surface of the angle positioning block 34 is an inclined surface, the four corners of the top of the angle positioning block 34 are provided with protruding positioning portions 33, the top surface of the positioning portion 33 is an inclined surface parallel to the top surface of the angle positioning block 34, and the top surface of the positioning portion 33 is used to abut the corresponding position of the lower surface of the flange of the workpiece 63, thereby playing a positioning role.

[0050] The second positioning assembly 9 further comprises 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 matched with the first positioning pin 54 and the second positioning pin 53, thereby playing a positioning role, the angle positioning block 34 can be quickly replaced, and the positioning of various workpieces 63 can be realized; the third positioning pin 49 is fixed on the top of the base 46, the mounting seat 36 is provided with a positioning hole corresponding to the third positioning pin 49, thereby playing a positioning role, and the mounting seat 36 can 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 rhombic pin.

[0051] The second positioning assembly 9 further comprises a locking nut 41, the locking nut 41 is threadedly connected on the adjusting bolt 42, the outer side of the positioning shaft guide end cover 35 is provided with a counterbore hole corresponding to the locking nut 41, the inner side of the locking nut 41 is tightly pressed in the counterbore hole, and the locking nut 41 is used to lock the position of the adjusting bolt 42; the outer end of the positioning shaft 50 is provided with a threaded hole, the inner end of the adjusting bolt 42 is matched with the threaded hole, the axis of the positioning shaft 50 is on the same straight line as the axial direction of the adjusting bolt 42, the adjusting bolt 42 moves along with the movement of the positioning shaft 50, and the outer end of the adjusting bolt 42 is used to tightly press the inner side surface of the bottom reinforcing rib 3 of the workpiece 63; the two adjusting bolts 42 are symmetrical about the central axis of the connecting shaft 38, thereby playing a symmetrical centering and positioning role.

[0052] The second positioning assembly 9 further comprises a connecting shaft first end cover 37 and a connecting shaft second end cover 32, the connecting shaft first end cover 37 is detachably fixed on one end of the first sliding hole 60, the connecting shaft first end cover 37 is provided with an end cover hole matched with the connecting shaft 38, and the connecting shaft second end cover 32 is detachably fixed on the other end of the first sliding hole 60; the inner sides of the connecting shaft second end cover 32, the connecting shaft first end cover 37 and the positioning shaft guide end cover 35 are all provided with dustproof sealing rings 47, the mounting seat 36 is provided with sealing grooves 61 matched with the dustproof sealing rings 47, thereby playing a sealing role, the first sliding hole 60 and the second sliding hole 62 are communicated to form a cross-shaped circular moving channel, the dustproof sealing rings 47 can prevent cuttings, iron filings and dust from entering the cross-shaped circular moving channel, and the movement of the connecting shaft 38 and the two positioning shafts 50 can be prevented from being blocked.

[0053] The second positioning assembly 9 further comprises a first power source joint 57 and a C-shaped fixed connecting block 58, the first power source joint 57 is fixed at the free end of the first power source 10, the right end of the first power source joint 57 is provided with a connecting groove 59, the left end of the connecting shaft 38 is sequentially provided with a connecting block 56 and a clamping groove 55, 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 connecting block 58 is clamped at the left side of the clamping groove 55, the fixed connecting block 58 is spaced from the right side of the clamping groove 55, and the fixed connecting block 58 is detachably fixed on the first power source joint 57 through screws, so that the flexible connection of the connecting shaft 38 and the first power source 10 is realized, and the assembly tolerance of the connecting shaft 38, the connecting shaft first end cover 37 and other components is adaptively connected, in addition, the first power source joint 57 and the connecting shaft 38 can also adopt the form of detachable fixed connection, but the machining precision of the connecting shaft 38, the connecting shaft first end cover 37 and other components is required to be higher.

[0054] The included 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 of the inclined surface and the central axis, and the right end of the inclined surface is provided with a connecting shaft limiting step 48, so that the rigidity of the connecting shaft 38 is enhanced.

[0055] The use method of the present application is as follows:

[0056] First step: detachably fix the bottom plate 5 on the machining table, 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 distance between the outer end surface of the two adjusting bolts 42 and the axial center surface of the connecting shaft 38 is the same, and the symmetrical positioning and centering accuracy is ensured; according to the specifications of the workpiece 63, the positions of the movable plate 20 and the second power source 22 are adjusted to the positions, so that the movable pressing block 13 is pressed on the right side surface of the workpiece 63, and the pressing effect is achieved.

[0057] Second step: arrange the workpiece 63 on the angle positioning block 34, so that the flange lower surface 2 of the workpiece 63 is attached to the top surface of the angle positioning block 34, and the reinforcing ribs 3 on the left side and the right side of the bottom of the workpiece 63 are arranged on the front and rear sides of the angle positioning block 34, respectively, and correspond to the two adjusting bolts 42.

[0058] Third step: the first power source 10 works, the first power source 10 drives the connecting shaft 38 to elongate, through the arrangement of the inclined surface on the connecting shaft 38, the connecting shaft 38 drives the two positioning shafts 50 to move, the two positioning shafts 50 move in the direction away from each other, extruding the corresponding springs 52, the positioning shaft 50 drives the corresponding adjusting bolt 42 to move at the same time, when the outer end surface of the adjusting bolt 42 contacts the inner sides of the two surfaces of the reinforcing rib 3, the center of the inner sides of the two surfaces of the special-shaped support reinforcing rib 3 is automatically determined, the position of the workpiece 63 is determined, and the center position of the workpiece 63 can be placed consistently each time.

[0059] Fourth step: the second power source 22 works, the second power source 22 is elongated, and the movable pressing block 13 is driven 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, the third power source 29 is elongated, and the horizontal pressing block 28 is driven to move to the side surface of the workpiece 63 through the connecting rod 31; the pressing operation of the workpiece 63 is completed, and the workpiece 63 is processed.

[0060] Fifth step: after the flange hole 4 of the workpiece 63 is processed, the second power source 22 and the third power source 29 work, and the movable pressing block 13 and the horizontal pressing block 28 are driven away from the workpiece 63; the first power source 10 works, the connecting shaft 38 is driven to contract, the two positioning shafts 50 are driven to move, the spring 52 is rebounded, and the positioning shaft 50 and the adjusting bolt 42 return to the initial position, and the workpiece 63 is taken off.

[0061] The workpiece 63 of the present application is a special-shaped support, mainly as a spring 52 pressing plate 15, as shown in Figure 1 and Figure 2 , it is a special-shaped support of one type, the flange hole 4 is processed, the flange upper surface 1 and the flange lower surface 2 have an angle, and the left side and the right side of the flange lower surface 2 are provided with reinforcing ribs 3.

[0062] The detachable fixed connection of the present application preferably adopts bolts or screws to realize detachable fixed connection.

[0063] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0064] The above examples are illustrative of the present application and are not limiting of the present application, and any simple transformation of the present application belongs to the protection scope of the present application.

Claims

1. A modular and flexible symmetrical centering and positioning clamping device for irregularly shaped brackets, comprising a base plate, characterized in that: The top of the base plate is provided with a first positioning component, a second positioning component, and a first clamping component. The first clamping component is located to the right of the second positioning component, and the second clamping components are symmetrically arranged on the front and rear sides of the second positioning component. The first positioning component includes a vertical plate and positioning pads. The vertical plate is detachably fixed to the top of the base plate, and two symmetrical positioning pads are detachably fixed to the right side of the vertical plate. The second positioning component 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 cap, 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 upright plate. The base is located on the right side of the upright plate and is detachably fixed to the top of the base plate. The mounting seat is detachably fixed to the top of the base. The mounting seat has a first sliding hole, and the connecting shaft is slidably connected in the first sliding hole. The left end of the connecting shaft extends out of the first sliding hole and is detachably connected to the free end of the first power source. The connecting shaft has two sides... The device features symmetrical positioning shafts. The side of the connecting shaft has an inclined surface that mates with the positioning shafts. The mounting base has second sliding holes on both sides that mate with the positioning shafts. A guide end cap for the positioning shaft is located at the outer end of the second sliding hole and is detachably and fixedly connected to the mounting base. A spring is sleeved on the positioning shaft, which has a limiting step. The inner end of the spring abuts against the limiting step, and the outer end of the spring abuts against the inner side of the guide end cap. The outer end of the positioning shaft is located inside the guide end cap and is threadedly connected to an adjusting bolt. The adjusting bolt extends to the outside of the outer guide end cap. An angle positioning block is detachably and fixedly mounted on the top of the mounting base. Both the first clamping assembly and the second clamping assembly can be detached and fixed to the base plate.

2. The modular and flexible symmetrical centering and positioning clamping device for irregularly shaped supports as described in 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. The movable plate is detachably fixed to the base plate. Two spaced second power sources are detachably fixed to the top of the movable plate. 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 via a pin. The hinge support is located 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 via a rotating shaft. The other end of the pressure plate is provided with a fixing groove. One end of the movable pressure block is detachably fixed in the fixing groove by a fixing screw.

3. The modular and flexible symmetrical centering and positioning clamping device for irregularly shaped supports as described in claim 2, characterized in that: The movable plate is provided with a first strip hole that allows the installation position of the movable plate to be adjusted left and right, and a second strip hole that allows the positions of the two hinge supports and the second power source to be adjusted front and back. There are mounting bolts in both the first and second strip holes. The movable plate can be detachably fixed to the top of the base plate through the mounting bolts in the corresponding first strip holes. The hinge supports and the second power source can be detachably fixed to the top of the movable plate through the mounting bolts in the corresponding second strip holes.

4. The modular and flexible symmetrical centering and positioning clamping device for irregularly shaped brackets as described in claim 1, characterized in that: The second clamping assembly includes a third power source, a third power base, a horizontal clamping block, and a connecting rod. The third power source is detachably fixed to the third power base, which is detachably fixed to the side of the base plate. One end of the connecting rod is detachably fixed to the free end of the third power source, and the other end of the connecting rod is detachably fixed to one end of the horizontal clamping block. The top of the other end of the horizontal clamping block is provided with a stepped step, the top surface of which is an inclined surface, and a clearance groove is provided in the middle of the top of the stepped step.

5. The modular and flexible symmetrical centering and positioning clamping device for irregularly shaped brackets as described in claim 1, characterized in that: The angle positioning block is rectangular in shape, with an inclined surface on the top surface. There are protruding positioning parts at the four corners of the top of the angle positioning block, and the top surface of the positioning parts 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 irregularly shaped brackets as described in claim 1, characterized in that: The second positioning component 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 base, and the angle positioning block is provided with positioning holes that cooperate with the first positioning pin and the second positioning pin respectively. The top of the base is fixed with a third positioning pin, and the mounting base is provided with positioning holes corresponding to the third positioning pin.

7. The modular and flexible symmetrical centering and positioning clamping device for irregularly shaped brackets as described in claim 1, characterized in that: The second positioning component also includes a locking nut, which is threaded onto 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 pressed against the countersunk hole. The outer end of the positioning shaft is provided with a threaded hole in the middle, and the inner end of the adjusting bolt is engaged with the threaded hole. The axis of the positioning shaft and the axis of the adjusting bolt are on the same straight line.

8. The modular and flexible symmetrical centering and positioning clamping device for irregularly shaped brackets as described in claim 1, characterized in that: The second positioning assembly also includes a first end cap and a second end cap of the connecting shaft. The first end cap of the connecting shaft is detachably fixed to one end of the first sliding hole and has an end cap hole that mates with the connecting shaft. The second end cap of the connecting shaft is detachably fixed to the other end of the first sliding hole. Dustproof sealing rings are provided on the inner sides of the second end cap of the connecting shaft, the first end cap of the connecting shaft, and the guide end cap of the positioning shaft. A sealing groove that mates with the dustproof sealing ring is provided on the mounting base.

9. The modular and flexible symmetrical centering and positioning clamping device for irregularly shaped brackets as described in claim 8, characterized in that: The second positioning component 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. The right end of the first power source connector is provided with a connecting groove. The left end of the connecting shaft is provided with a connecting block and a slot in sequence. The connecting block is set 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 locked in the left side of the slot. There is a gap between the fixed connecting block and the right side of the slot. 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 irregularly shaped supports as described in claim 1, characterized in that: The angle between the inclined surface on the connecting shaft and the central axis is acute. The distance from the left end of the inclined surface to the central axis is greater than the distance from the right end to the central axis. A connecting shaft limiting step is provided at the right end of the inclined surface.

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