Automobile aluminum part machining clamp

Abstract

The invention relates to the technical field of machining clamps, in particular to an automobile aluminum part machining clamp which comprises a clamp base, a fixed mounting groove is formed in the outer side surface of the clamp base, a sliding mounting groove is formed in the top surface of the clamp base, and a clamping arm opening and closing mechanism is arranged on the inner side surface of the fixed mounting groove. The surface of the top of the clamping arm opening and closing mechanism is provided with an attaching clamping jaw mechanism, the surface of the inner side of the sliding installation groove is slidably connected with a movable platform, and the surface of the top of the movable platform is provided with a bottom supporting mechanism. In this way, when an aluminum part with the surface being not a complete plane is clamped, the surface contour shape can be automatically adapted, when the surface of the part is not a plane, the clamping jaw units are inevitably staggered to adapt to the contour, and at the moment, the part can be prevented from transversely moving after being clamped; and the parts are prevented from moving in the vertical direction through the upper and lower rows of staggered clamping jaws.

Description

Technical Field

[0001] The invention relates to the technical field of processing fixtures, in particular to a processing fixture for automobile aluminum parts. Background Art

[0002] Machining fixtures are indispensable and important tools in the manufacturing industry. They are mainly used to fix and position workpieces to ensure machining accuracy and convenient operation. An excellent machining fixture can improve production efficiency, reduce errors, reduce costs, and thus improve product quality. The fixture design needs to be customized according to the characteristics of the workpiece, processing technology and other factors.

[0003] Aluminum parts need to be clamped and fixed when they are processed.

[0004] The existing patent (publication number: CN109514458B) discloses an automobile parts fixture structure, including a base, on which two positioning units and a moving unit are arranged; the two positioning units have the same structure and are arranged parallel to each other; the positioning unit includes a first positioning plate, the first positioning plate is connected to the base, the first positioning plate is provided with a first support plate and a second support plate, two parallel through holes are opened along the up and down directions of the first support plate, each through hole is provided with an upper connecting rod and a lower connecting rod, each upper connecting rod and each lower connecting rod can slide along the length direction of the through hole, the front end of each upper connecting rod is connected to the upper clamping block at the same time, the front end of the lower connecting rod is connected to the lower clamping block at the same time, and the upper clamping block and the lower clamping block are clearance-matched with the first support plate; a second positioning plate is arranged above the first positioning plate. In the above-mentioned equipment, since the clamping part is a plane, when processing and clamping aluminum parts, since the surface of the aluminum parts is not necessarily a complete plane, there may be grooves, protrusions or arcs, etc., and the aluminum parts are easy to deform. If a plane is used to clamp the aluminum parts, only a few contact points may be clamped, the clamping effect is not good, and the aluminum parts are arbitrarily deformed.

[0005] In view of this, we proposed a machining fixture for automotive aluminum parts. Summary of the invention

[0006] The object of the present invention is to provide a processing fixture for automotive aluminum parts to solve the problem that the existing processing fixture proposed in the above background technology, when clamping aluminum parts, due to the different grooves, protrusions or curved surfaces on the surface of the aluminum parts, only a few contact points may be clamped during clamping, the clamping is unstable and the aluminum parts are easily deformed. To achieve the above object, the present invention provides the following technical solution: A processing fixture for automotive aluminum parts, including a fixture base, the outer surface of the fixture base is provided with a fixed installation groove, the top surface of the fixture base is provided with a sliding installation groove, the inner surface of the fixed installation groove is provided with a clamp arm opening and closing mechanism, the top surface of the clamp arm opening and closing mechanism is provided with a fitting clamping claw mechanism, the inner surface of the sliding installation groove is slidably connected with a moving platform, the outer surface of the moving platform is provided with a mounting hole, the inner surface of the mounting hole is threadedly connected with a positioning bolt, one end of the positioning bolt is fixedly connected with a mounting platform arm, one end of the mounting platform arm is fixedly connected with a working platform, and the top surface of the moving platform is provided with a bottom supporting mechanism.

[0007] Preferably, the clamp arm opening and closing mechanism includes a fixed mounting platform, the fixed mounting platform is fixedly connected to the inner surface of the fixed mounting groove, the outer surface of the fixed mounting platform is fixedly connected to a top bracket, the inner surface of the top bracket is provided with a top slide groove, the bottom surface of the fixed mounting platform is fixedly connected to a bottom mounting platform, the outer surface of the bottom mounting platform is fixedly connected to a driving cylinder, the bottom surface of the driving cylinder is fixedly connected to a lifting seat, the two ends of the lifting seat are hingedly connected to connecting arms, the two sides of the bottom mounting platform are hingedly connected to opening and closing arms, and the outer surfaces of the opening and closing arms are provided with traction grooves.

[0008] Preferably, the number of the fixed mounting platforms is two, and the two fixed mounting platforms are symmetrically distributed with the central axis of the fixture base as the axis of symmetry, the number of the top brackets on each fixed mounting platform is two, and the two top brackets are symmetrically distributed with the central axis of the fixed mounting platform as the axis of symmetry, and the two ends of the connecting arm are hingedly connected to the lifting seat and the opening and closing arm respectively.

[0009] Preferably, the laminating clamping jaw mechanism includes an opening and closing base, the opening and closing base is slidably connected to the top surface of the top bracket, the bottom surface of the opening and closing base is provided with a traction moving groove, the inner surface of the traction moving groove is fixedly connected with a connecting pin, the top surface of the opening and closing base is fixedly connected with a clamping jaw shell, the outer surface of the clamping jaw shell is provided with a locking movable groove, one end of the clamping jaw shell is fixedly connected with a fastening slide, the inner surface of the clamping jaw shell is slidably connected with a movable column, the outer surface of the movable column is sleeved with a clamping jaw reset spring, one end of the movable column is fixedly connected with a clamping jaw unit, the outer surface of the clamping jaw unit is fixedly connected with an elastic wrapping cloth, the inner surface of the clamping jaw shell is slidably connected with a locking compacting block, one end of the locking compacting block is fixedly connected with a connecting column, and the outer surface of the locking compacting block is rotatably connected with a locking pull rod.

[0010] Preferably, the traction movable groove is slidably connected to the outer surface of the opening and closing arm, the connecting pin is slidably connected to the inner surface of the traction groove, the number of the opening and closing bases on each fixed mounting platform is two, and the two opening and closing bases are symmetrically distributed with the central axis of the fixed mounting platform as the axis of symmetry, the number of the clamping jaw shells is two, and the two clamping jaw shells are symmetrically distributed with the central axis of the clamp base as the axis of symmetry, the movable column passes through the clamping jaw shells and is slidably connected to its inner wall, the movable columns are equidistantly distributed on the outer surface of the clamping jaw shells, and the movable columns are symmetrically distributed on the outer surface of each clamping jaw shell, both ends of the elastic wrapping cloth are fixedly connected to the clamping jaw unit, the locking compacting block is slidably connected to the outer surface of the clamping jaw unit, the connecting column passes through the clamping jaw unit and is slidably connected to its inner surface, the locking compacting block is slidably connected to the inner surface of the locking movable groove, the locking pull rod is slidably connected to the outer surface of the clamping jaw shell, and the locking pull rod is slidably connected to the outer surface of the fastening slide.

[0011] Preferably, the bottom supporting mechanism includes a mobile base, the mobile base is fixedly connected to the top surface of the mobile platform, the top surface of the mobile base is fixedly connected to an articulated mounting seat, the top surface of the mobile base is fixedly connected to an intermediate articulated seat, the inner surface of the articulated mounting seat is hingedly connected to a bottom articulated rod, one end of the bottom articulated rod is rotatably connected to the top articulated rod, the outer surface of the bottom articulated rod is rotatably connected to a connecting synchronous shaft, the top surface of the top articulated rod is hingedly connected to the bottom supporting platform, the bottom surface of the bottom supporting platform is fixedly connected to a spring mounting column, the outer surface of the spring mounting column The face cover is provided with a lifting and returning spring, the outer surface of the connecting synchronous shaft is rotatably connected with a synchronous moving plate, one end of the synchronous moving plate is fixedly connected with a locking pin, the top surface of the moving platform is fixedly connected with a limiting side plate, the outer surface of the limiting side plate is provided with a path limiting groove, the inner surface of the moving platform is slidably connected with a pressing hinge seat, the top surface of the pressing hinge seat is bolted with a bottom contact plate, the top surface of the bottom contact plate is bolted with a top contact plate, the outer surface of the top contact plate is rotatably connected with a pressing wheel, and the bottom surface of the pressing hinge seat is fixedly connected with a pressing return spring.

[0012] Preferably, the number of the articulated mounting seats is two, and the two articulated mounting seats are equidistantly distributed on the top surface of the movable base, the top surface of the middle articulated seat is hingedly connected with a bottom articulated rod, the number of the bottom articulated rods and the number of the top articulated rods are six, and the six bottom articulated rods and the six top articulated rods are equidistantly and symmetrically distributed on the top surface of the movable base, the number of the connecting synchronization shafts is three, and the six bottom articulated rods and the six top articulated rods are rotatably connected through the connecting synchronization shaft, the spring mounting column penetrates to the inner surface of the middle articulated seat, The lifting and returning spring is slidingly connected to the top surface of the middle hinge seat, the number of the synchronous moving plate and the limiting side plates are both two, and the two synchronous moving plates and the two limiting side plates are symmetrically distributed with the central axis of the moving platform as the symmetry axis, the locking pin is slidingly connected to the inner surface of the path limiting groove, the pressing hinge seat penetrates to the inner surface of the moving platform and is slidingly connected to its inner wall, the bottom contact plate and the top contact plate are slidingly connected to the outer surface of the connecting synchronous shaft, and the bottom surface of the pressing and returning spring is slidingly connected to the top surface of the moving platform.

[0013] A method for using a processing fixture for automotive aluminum parts comprises the following steps: S1. Start the driving cylinder to push the lifting seat downward. The lifting seat pulls the opening and closing arms through the connecting arms on both sides to rotate around the connection to open and close. Under the action of the traction groove, the connecting pin is pushed outward, and the opening and closing bases on both sides are driven to move outward, and the gap between the jaw shells is expanded; S2. Place the aluminum parts to be clamped between the jaw shells, drive the cylinder to retract the lifting seat, move the jaw shell inward and drive the jaw unit close to the surface of the aluminum parts, and each individual jaw unit is pushed out by the jaw return spring, so that each individual jaw unit fits the surface of the aluminum parts according to the surface contour of the parts, and the elastic wrapping cloth between the jaw units will also wrap around the surface of the parts; S3, when the position of the clamping jaw unit is determined, the locking rod is pulled to clamp it on the fastening slide. At this time, the two ends of the locking and compacting block are locked in position by the fastening slide and the pulling of the locking rod, and the locking and compacting block is close to the clamping jaw unit to clamp each clamping jaw unit. The position of the clamping jaw unit is fixed at this time. At this time, the clamping jaw shell is pushed inward through the clamp arm opening and closing mechanism, so that the clamping jaw unit and the elastic wrapping cloth that have adapted to the contour of the component are further clamped on the surface of the component; S4. The mobile base can move with the mobile platform, so that the working position of the working platform is synchronized with the lifting position of the bottom support mechanism. When the mobile base moves at the bottom of the component, the bottom support platform can move up and down and be lifted by the lifting return spring. It can adapt to the shape of the bottom of the component by vertical movement. When it reaches the working area, the device working on the component will press down to apply pressure to the component. At this time, the pressing wheel will be pressed down, and the top contact plate will contact the nearby connecting synchronous shaft, pushing out the connecting synchronous shaft, making the angle of the bottom hinge rod and the top hinge rod larger, and pushing the bottom support platform upward to support both sides of the processing area.

[0014] Compared with the prior art, the present invention has the following beneficial effects: In the present invention, through the setting of the clamp arm opening and closing mechanism and the fitting clamping jaw mechanism, a plurality of independently movable clamping jaw units and elastic wrapping cloth are used to stick to the surface according to the surface contour of the component. In this way, when the clamping surface of an aluminum component that is not a completely flat surface is used, the surface contour shape can be automatically adapted, so that the grooves, protrusions and arcs of the component are all wrapped by the clamping jaw units and elastic wrapping cloth at different positions, thereby preventing only a few protruding positions from being clamped when clamping a component with an uneven surface, thereby affecting the clamping effect and causing surface deformation of the aluminum component.

[0015] In the present invention, by setting a fitting clamping jaw mechanism, when the surface of a component is not a plane, the clamping jaw units must be staggered with each other to adapt to the contour. At this time, the component can be prevented from being displaced laterally after being clamped. Moreover, the clamping jaw units on each clamping jaw shell have two rows distributed up and down. When clamping the side of the component, if the side plate of the component is also not a plane, the two rows of clamping jaw units can respectively adapt to the different sizes of the upper and lower parts and clamp them, so as to better adapt to the surface contour of the component and prevent the component from being displaced in the vertical direction through the two rows of staggered clamping jaws.

[0016] In the present invention, the bottom support mechanism is provided to achieve support for both sides of the processing area when processing parts, thereby preventing the parts from being deformed. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic side view of the overall structure of the present invention; Figure 2 It is a schematic diagram of the cooperation mechanism between the clamp base and the clamp arm opening and closing mechanism of the present invention; Figure 3 It is a schematic diagram of the cooperation mechanism between the fixed installation platform and the bottom installation platform of the present invention; Figure 4 It is a front view schematic diagram of the overall structure of the clamp arm opening and closing mechanism of the present invention; Figure 5 It is a schematic diagram of the cooperation mechanism among the top bracket, the opening and closing arm, the traction moving slot and the connecting pin of the present invention; Figure 6 It is a schematic diagram of the cooperation mechanism between the opening and closing base, the clamping jaw housing and the movable column of the present invention; Figure 7 It is a schematic diagram of the mechanism for cooperation between the clamp housing, the movable column and the clamp unit of the present invention; Figure 8 It is a schematic diagram of the cooperation mechanism between the clamping jaw unit, the locking and compacting block and the connecting column of the present invention; Fig. 9 It is a schematic diagram of the mutual cooperation mechanism of the locking and compacting block, the locking pull rod, the locking movable groove and the fastening slide table of the present invention; Fig.10 It is a schematic diagram of the cooperation mechanism between the fixture base, the sliding installation groove and the moving platform of the present invention; Fig.11 It is a schematic diagram of the cooperation mechanism of the components of the bottom supporting mechanism of the present invention; Fig.12 It is a schematic diagram of the cooperation mechanism between the mobile base, the hinged mounting base and the intermediate hinged base of the present invention; Fig.13 It is a schematic diagram of the cooperation mechanism between the bottom hinge rod, the top hinge rod, the connecting synchronous shaft and the synchronous moving plate of the present invention; Fig.14 It is a schematic diagram of the mechanism for connecting the synchronous shaft, the bottom contact plate and the top contact plate to cooperate with each other in the present invention.

[0018] In the figure: 1. Clamp base; 11. Fixed mounting groove; 12. Sliding mounting groove; 2. Clamp arm opening and closing mechanism; 21. Fixed mounting platform; 211. Top bracket; 212. Top slide; 23. Bottom mounting platform; 24. Driving cylinder; 241. Lifting seat; 242. Connecting arm; 25. Opening and closing arm; 251. Traction groove; 3. Fitting clamping jaw mechanism; 31. Opening and closing base; 311. Traction moving groove; 312. Connecting pin; 33. Clamping jaw housing; 331. Locking movable groove; 332. Fastening slide; 34. Active column; 341. Clamping jaw reset spring; 342. Clamping jaw unit; 343. Elastic wrapping cloth; 35. Locking compacting block; 351. Connecting column ; 352, locking rod; 4, moving platform; 41, mounting hole; 411, positioning bolt; 42, mounting platform arm; 43, working platform; 5, bottom support mechanism; 51, moving base; 52, hinged mounting seat; 5211, middle hinged seat; 521, bottom hinged rod; 522, top hinged rod; 523, connecting synchronous shaft; 53, bottom supporting platform; 531, spring mounting column; 532, lifting reset spring; 54, synchronous moving plate; 541, locking pin; 55, limiting side plate; 551, path limiting groove; 56, pressing hinged seat; 561, bottom contact plate; 562, top contact plate; 563, pressing wheel; 564, pressing reset spring. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technical personnel in this field without creative work are within the scope of protection of the present invention.

[0020] See also Figures 1 to 14The present invention provides a technical solution: a processing fixture for automobile aluminum parts, comprising a fixture base 1, a fixed installation groove 11 is provided on the outer surface of the fixture base 1, a sliding installation groove 12 is provided on the top surface of the fixture base 1, a clamp arm opening and closing mechanism 2 is provided on the inner surface of the fixed installation groove 11, a fitting clamping claw mechanism 3 is provided on the top surface of the clamp arm opening and closing mechanism 2, a moving platform 4 is slidably connected to the inner surface of the sliding installation groove 12, a mounting hole 41 is provided on the outer surface of the moving platform 4, a positioning bolt 411 is threadedly connected to the inner surface of the mounting hole 41, one end of the positioning bolt 411 is fixedly connected to a mounting platform arm 42, and the mounting platform arm 42 One end of the mobile platform 4 is fixedly connected to a working platform 43, and a bottom supporting mechanism 5 is arranged on the top surface of the mobile platform 4, including a clamp base 1 which is the base of the entire device, used to provide a clamping effect for connecting with the outside world, a fixed installation groove 11 for fixedly installing the clamp arm opening and closing mechanism 2, and a sliding installation groove 12 for installing the mobile platform 4 and allowing it to slide inside. The mobile platform 4 installs the installation platform arm 42 at different heights of multiple installation holes 41 on the surface through positioning bolts 411, and the working platform 43 is used to position the bottom bottom supporting mechanism 5, so that the bottom supporting mechanism 5 moves synchronously with the processing device placed in the working platform 43 to play a role of bottom supporting at the bottom.

[0021] The clamp arm opening and closing mechanism 2 includes a fixed mounting platform 21, the fixed mounting platform 21 is fixedly connected to the inner surface of the fixed mounting groove 11, the outer surface of the fixed mounting platform 21 is fixedly connected to a top bracket 211, the inner surface of the top bracket 211 is provided with a top slide groove 212, the bottom surface of the fixed mounting platform 21 is fixedly connected to a bottom mounting platform 23, the outer surface of the bottom mounting platform 23 is fixedly connected to a driving cylinder 24, the bottom surface of the driving cylinder 24 is fixedly connected to a lifting seat 241, the two ends of the lifting seat 241 are hingedly connected to connecting arms 242, the two sides of the bottom mounting platform 23 are hingedly connected to opening and closing arms 25, the outer surface of the opening and closing arms 25 is provided with a traction groove 251, through the setting of the clamp arm opening and closing mechanism 2, when using During the process, the fixed mounting platform 21 and the bottom mounting platform 23 are used for installation and positioning, and the entire device is installed at the bottom of the fixture base 1 to prevent debris or other pollution generated during the clamping of parts and components from dripping onto the surface. The driving cylinder 24 can drive the bottom lifting seat 241 to rise and fall. Since the lifting seat 241 is hinged on both sides of the connecting arm 242, the connecting arm 242 will pull the opening and closing arm 25 to rotate around the rotating connection with the bottom mounting platform 23, and drive the opening and closing arm 25 to move laterally in the top slide groove 212, thereby moving the top opening and closing base 31 closer or farther away at the same time, and the top bracket 211 limits the moving path of the opening and closing arm 25 to prevent position deviation during movement, thereby driving the fitting clamping jaw mechanism 3 to open and close.

[0022] There are two fixed mounting platforms 21, and the two fixed mounting platforms 21 are symmetrically distributed with the central axis of the clamp base 1 as the axis of symmetry. There are two top brackets 211 on each fixed mounting platform 21, and the two top brackets 211 are symmetrically distributed with the central axis of the fixed mounting platform 21 as the axis of symmetry. The two ends of the connecting arm 242 are hinged to the lifting seat 241 and the opening and closing arm 25 respectively. The symmetrical fixed mounting platforms 21 play a supporting role at both ends of the clamping jaw housing 33 to disperse the force, and a pair of opening and closing arms 25 are installed on each fixed mounting platform 21 for controlling the approach and distance of the clamping jaw housings 33 on both sides. The connecting arm 242 rotates around the connection point by lifting and pulling the opening and closing arms 25 through the lifting seat 241.

[0023] The fitting clamp mechanism 3 includes an opening and closing base 31, which is slidably connected to the top surface of the top bracket 211, a traction moving groove 311 is provided on the bottom surface of the opening and closing base 31, and a connecting pin 312 is fixedly connected to the inner surface of the traction moving groove 311, a clamp housing 33 is fixedly connected to the top surface of the opening and closing base 31, a locking movable groove 331 is provided on the outer surface of the clamp housing 33, a fastening slide 332 is fixedly connected to one end of the clamp housing 33, a movable column 34 is slidably connected to the inner surface of the clamp housing 33, a clamp reset spring 341 is sleeved on the outer surface of the movable column 34, a clamp unit 342 is fixedly connected to one end of the movable column 34, and an elastic wrapping cloth 343 is fixedly connected to the outer surface of the clamp unit 342 The inner surface of the clamping jaw housing 33 is slidably connected with a locking and compacting block 35, one end of the locking and compacting block 35 is fixedly connected with a connecting column 351, and the outer surface of the locking and compacting block 35 is rotatably connected with a locking pull rod 352. By fitting the setting of the clamping jaw mechanism 3, during use, through the action of the connecting pin 312 and the opening and closing arm 25, when the opening and closing arm 25 moves laterally, it will slide in the traction moving groove 311, and through the action of the traction groove 251, the connecting pin 312 is pushed and pulled so that the opening and closing base 31 can slide on the top of the top bracket 211, and drive the clamping jaw housing 33 to move laterally, the movable column 34 can move laterally on the clamping jaw housing 33 and be pushed inward by the action of the clamping jaw reset spring 341, and the clamping jaw unit 342 and the movable column 3 4 moves synchronously, and the movement of each clamping jaw unit 342 is independent and can be in different positions. When the parts to be clamped are placed between the clamping jaw shells 33, the clamping jaw shells 33 drive all the clamping jaw units 342 to move inward. Since the clamping jaw units 342 are movable, each clamping jaw unit 342 will be attached to the surface according to the surface contour of the parts, and the elastic wrapping cloth 343 between each clamping jaw unit 342 will also be wrapped on the surface of the parts, so that the clamping jaw units 342 and the elastic wrapping cloth 343 can be wrapped on the surface according to the surface contour of the parts. The connecting column 351 on the locking and compacting block 35 passes through each clamping jaw unit 342, and the rotation connection between the locking and compacting block 35 and the locking rod 352 is in the locking movable groove 331. The locking movable groove 331 can be moved to a certain extent. At this time, the locking rod 352 is in a loose state. The locking and compacting block 35 is movable and does not clamp the clamping claw unit 342. When the position of the clamping claw unit 342 is determined, the locking rod 352 is pulled to make it stuck on the fastening slide 332 and form an interference fit. At this time, the two ends of the locking and compacting block 35 are locked in position by the fastening slide 332 and the pulling of the locking rod 352, and the locking and compacting block 35 is close to the clamping claw unit 342, clamping each clamping claw unit 342. The position of the clamping claw unit 342 is fixed at this time. At this time, the clamping claw housing 33 is continued to be pushed inward through the clamp arm opening and closing mechanism 2, so that the clamping claw unit 342 and the elastic wrapping cloth 343 that have adapted to the contour of the component are further close to the surface of the component.When the surface of the component is not flat, the clamping jaw units 342 must be staggered to adapt to the contour. This can prevent the component from being displaced laterally after being clamped. The clamping jaw units 342 on each clamping jaw housing 33 have two rows distributed up and down. When clamping the side of the component, if the side plate of the component is not flat, the two rows of clamping jaw units 342 can respectively adapt to the different sizes of the upper and lower parts and clamp them, making better use of the surface contour of the component, and preventing the vertical displacement of the component through the two rows of staggered clamping jaws.

[0024] The traction moving groove 311 is slidably connected to the outer surface of the opening and closing arm 25, the connecting pin 312 is slidably connected to the inner surface of the traction groove 251, the number of the opening and closing bases 31 on each fixed installation platform 21 is two, and the two opening and closing bases 31 are symmetrically distributed with the central axis of the fixed installation platform 21 as the symmetry axis, the number of the clamping jaw shells 33 is two, and the two clamping jaw shells 33 are symmetrically distributed with the central axis of the clamp base 1 as the symmetry axis, the movable column 34 passes through the clamping jaw shell 33 and is slidably connected to its inner wall, the movable columns 34 are equidistantly distributed on the outer surface of the clamping jaw shell 33, and the movable columns 34 are symmetrically distributed on the outer surface of each clamping jaw shell 33, both ends of the elastic wrapping cloth 343 are fixedly connected to the clamping jaw unit 342, the locking and compacting block 35 is slidably connected to the outer surface of the clamping jaw unit 342, the connecting column 351 passes through the clamping jaw unit 342 and is slidably connected to its inner surface, the locking and compacting block 35 and the locking movable groove The inner surface of 331 is slidably connected, the locking rod 352 is slidably connected to the outer surface of the clamping shell 33, the locking rod 352 is slidably connected to the outer surface of the fastening slide 332, the opening and closing arm 25 pushes and pulls the connecting pin 312 through the traction groove 251 to move the two clamping shells 33 horizontally to achieve clamping, and the opening and closing base 31 has two on each side, which are used to support the two ends of the clamping shell 33 on each side, and the locking and compacting block 35 passes through each clamping jaw unit 342 through the connecting column 351. The locking and compacting block 35 can move in the locking movable groove 331, and will not work when it is away from the clamping jaw unit 342. The clamping jaw unit 342 can move freely to adapt to the surface contour of the component. When the adaptation is completed, the locking rod 352 is pressed on the surface of the fastening slide 332, so that the locking and compacting block 35 approaches and clamps the clamping jaw unit 342, so that it cannot move freely to fix the position and shape of the clamping jaw unit 342 and the elastic wrapping cloth 343.

[0025] The bottom supporting mechanism 5 includes a movable base 51, which is fixedly connected to the top surface of the movable platform 4, and a hinged mounting seat 52 is fixedly connected to the top surface of the movable base 51, and a middle hinged seat 5211 is fixedly connected to the top surface of the movable base 51, and a bottom hinged rod 521 is hingedly connected to the inner surface of the hinged mounting seat 52, and one end of the bottom hinged rod 521 is rotatably connected to the top hinged rod 522, and the outer surface of the bottom hinged rod 521 is rotatably connected to the connecting synchronous shaft 523, and the top surface of the top hinged rod 522 is hingedly connected to the bottom supporting platform 53, and a spring mounting column 531 is fixedly connected to the bottom surface of the bottom supporting platform 53, and a lifting and returning spring 532 is sleeved on the outer surface of the spring mounting column 531. The outer surface of the synchronous shaft 523 is rotatably connected with a synchronous moving plate 54, one end of which is fixedly connected with a locking pin 541, the top surface of the mobile platform 4 is fixedly connected with a limiting side plate 55, the outer surface of the limiting side plate 55 is provided with a path limiting groove 551, the inner surface of the mobile platform 4 is slidably connected with a pressing hinge seat 56, the top surface of the pressing hinge seat 56 is bolted with a bottom contact plate 561, the top surface of the bottom contact plate 561 is bolted with a top contact plate 562, the outer surface of the top contact plate 562 is rotatably connected with a pressing wheel 563, the bottom surface of the pressing hinge seat 56 is fixedly connected with a pressing return spring 564, through the setting of the bottom supporting mechanism 5, during use, the mobile platform 4 The movable base 51 can move with the movable platform 4, so that the working position of the working platform 43 is synchronized with the lifting position of the bottom support mechanism 5. The movable base 51 is installed with three sets of hinged bottom hinge rods 521 and top hinge rods 522 on both sides through the hinged mounting seat 52 and the middle hinged seat 5211. The bottom hinge rod 521 and the top hinge rod 522 are connected by the connected synchronization shaft 523 to realize rotation connection, and the spring mounting column 531 on the bottom support platform 53 installed on the top of the top hinge rod 522 is inserted into the middle hinged seat 5211, so that the bottom support platform 53 can only move in the vertical direction, and the lateral position remains unchanged. The hinged mounting seat 52 and the middle hinged seat 5211 are also fixed and cannot move. The bottom of the connecting rod 521 and the top of the top hinge rod 522 cannot move laterally, and only the top of the top hinge rod 522 can move upward. Since the bottom hinge rod 521 and the top hinge rod 522 can rotate and are bent in the initial state, the top position of the top hinge rod 522 is relatively low. When the angle gradually increases, the top position of the top hinge rod 522 gradually rises, and the bottom supporting platform 53 also rises, and the connecting synchronous shaft 523 also moves. However, since there is a spring mounting column 531 in the middle to block the connecting synchronous shaft 523, the maximum angle between the bottom hinge rod 521 and the top hinge rod 522 will not exceed 180 degrees. In this way, the bottom supporting platform 53 will not drop due to the angle exceeding 180 degrees.The angle of the bottom hinge rod 521 and the top hinge rod 522 can be enlarged by pushing the three connecting synchronous shafts 523. The connecting synchronous shafts 523 are connected together through the synchronous moving plate 54. Pushing one of them can drive all the connecting synchronous shafts 523 to move, thereby controlling all the bottom hinge rods 521 and the top hinge rods 522. The engaging pin 541 at one end of the synchronous moving plate 54 slides on the path limiting groove 551 of the limiting side plate 55, supporting and matching the oblique moving path of the synchronous moving plate 54 when pushing the bottom hinge rod 521 and the top hinge rod 522. The lifting and returning spring 532 on the spring mounting column 531 can lift the bottom supporting platform 53, so that the angle of the bottom hinge rod 521 and the top hinge rod 522 becomes larger. When the movable base 51 moves at the bottom of the component, the bottom supporting platform 53 can adapt to the shape of the bottom of the component by vertical movement. When it reaches the working area, the grinding, drilling or other devices installed on the working platform 43 that work on the component will press down and apply pressure to the component. At this time, the pressing wheel 563 will be pressed down, and the pressing wheel 563 will drive the bottom contact plate 561 and the top contact plate 562 to be pressed down. During the pressing process, the top contact plate 562 will contact the nearby connecting synchronous shaft 523. The top contact plate 562 is in an inclined state. When pressed down, the connecting synchronous shaft 523 will be pushed out, thereby lifting the bottom supporting platform 53 on both sides, which is used to support both sides of the processing area when processing parts to prevent deformation of parts. The bottom contact plate 561 and the top contact plate 562 are connected by bolts. When the bolts are loosened, the angle between the bottom contact plate 561 and the top contact plate 562 can be adjusted. The closer the top contact plate 562 is to the connecting synchronous shaft 523, the farther the distance of the connecting synchronous shaft 523 is pushed when the pressing distance is the same, so as to adapt to different processing support requirements. It does not play a pushing role when vertically upward. After the force disappears, the pressing hinge seat 56 resets the height of the bottom contact plate 561, the top contact plate 562 and the pressing wheel 563 through the action of the pressing reset spring 564. ,

[0026] There are two articulated mounting seats 52, and the two articulated mounting seats 52 are equidistantly distributed on the top surface of the movable base 51. The top surface of the middle articulated seat 5211 is hingedly connected with a bottom articulated rod 521. The number of the bottom articulated rods 521 and the top articulated rods 522 are both six, and the six bottom articulated rods 521 and the six top articulated rods 522 are all equidistantly and symmetrically distributed on the top surface of the movable base 51. There are three connecting synchronous shafts 523, and the six bottom articulated rods 521 and the six top articulated rods 522 are all rotatably connected by connecting synchronous shafts 523. The spring mounting column 531 penetrates the inner surface of the middle articulated seat 5211, and lifts up the reset spring 532 to be slidably connected to the top surface of the middle articulated seat 5211. There are two synchronous moving plates 54 and two limiting side plates 55, and the two synchronous moving plates 54 and the two limiting side plates 55 are all based on the central axis of the movable platform 4. The symmetrical distribution is symmetrical about the axis of symmetry. The locking pin 541 is slidably connected to the inner surface of the path limiting groove 551. The pressing hinge seat 56 penetrates to the inner surface of the moving platform 4 and is slidably connected to its inner wall. The bottom contact plate 561 and the top contact plate 562 are both slidably connected to the outer surface of the connecting synchronous shaft 523. The bottom surface of the pressing reset spring 564 is slidably connected to the top surface of the moving platform 4. The bottom hinge rod 521 is installed through the hinge mounting seat 52 and the middle hinge seat 5211. Each bottom hinge rod 521 is hinged with a top hinge rod 522. The lateral movement of the connecting synchronous shaft 523 controls the rotation angle and the height of the bottom supporting platform 53 at the same time. The spring mounting column 531 limits the lateral movement of the bottom supporting platform 53, and a lifting reset spring 532 is mounted on the surface so that the bottom supporting platform 53 can automatically reset and lift up. The locking pin 541 supports and limits the moving path through the path limiting groove 551.

[0027] In this embodiment, Figure 1 As shown, the clamp base 1 is the base of the entire device, which is used to connect with the outside world and provide a clamping effect, the fixed installation groove 11 is used to fix the clamp arm opening and closing mechanism 2, and the sliding installation groove 12 is used to install the mobile platform 4 and allow it to slide inside; In this embodiment, Figure 2 As shown, the fixed mounting platform 21 and the bottom mounting platform 23 are used for installation and positioning, and the entire device is installed at the bottom of the fixture base 1 to prevent the debris or other pollution generated during the processing of the clamped parts from dripping onto the surface; In this embodiment, Figure 3 , Figure 4 As shown, the driving cylinder 24 pushes the lifting seat 241 downward, and the lifting seat 241 pulls the opening and closing arms 25 through the connecting arms 242 on both sides to rotate around the connection, so as to open or close it; In this embodiment, Figure 5As shown, through the action of the connecting pin 312 and the opening and closing arm 25, when the opening and closing arm 25 moves laterally, it will slide through the traction moving groove 311, and through the action of the traction groove 251, the connecting pin 312 is pushed and pulled so that the opening and closing base 31 can slide on the top of the top bracket 211, and drive the clamping claw housing 33 to move laterally; In this embodiment, Figure 6 , Figure 7 As shown, each individual clamping jaw unit 342 is pushed out by the clamping jaw return spring 341, so that each individual clamping jaw unit 342 fits on the surface of the aluminum component according to the surface contour of the component; In this embodiment, Figure 8 , Fig. 9 As shown, the connecting column 351 passes through each clamping jaw unit 342. When the position of the clamping jaw unit 342 is determined, the locking rod 352 is pulled to make it clamped on the fastening slide 332 and form an interference fit. At this time, the two ends of the locking and compacting block 35 are locked in position by the fastening slide 332 and the pulling locking rod 352, and the locking and compacting block 35 is close to the clamping jaw unit 342 to clamp each clamping jaw unit 342. The position of the clamping jaw unit 342 is fixed at this time. In this embodiment, Fig.10 As shown, the mobile base 51 can move with the mobile platform 4, so that the working position of the working platform 43 is synchronized with the lifting position of the bottom supporting mechanism 5; In this embodiment, Fig.11 , Fig.12 As shown, the mobile base 51 is equipped with three sets of hinged bottom hinge rods 521 and top hinge rods 522 on both sides through the hinged mounting seat 52 and the middle hinge seat 5211, the bottom hinge rods 521 and the top hinge rods 522 are connected by the connected synchronization shaft 523, and the spring mounting column 531 on the bottom supporting platform 53 installed on the top of the top hinge rod 522 is inserted into the middle hinge seat 5211; In this embodiment, Fig.13 , Fig.14 As shown, the connecting synchronous shafts 523 are connected together through the synchronous moving plates 54. Pushing one of them can drive all the connecting synchronous shafts 523 to move, thereby controlling all the bottom hinged rods 521 and the top hinged rods 522. In the initial state, they are bent, and the top position of the top hinged rod 522 is lower. When the angle gradually increases, the top position of the top hinged rod 522 gradually rises, and the bottom supporting platform 53 also rises.

[0028] A method for using a processing fixture for automotive aluminum parts comprises the following steps: S1. Start the driving cylinder 24 to push the lifting seat 241 downward. The lifting seat 241 pulls the opening and closing arms 25 through the connecting arms 242 on both sides to rotate around the connection to open and close. Under the action of the traction groove 251, the connecting pin 312 is pushed outward, and the opening and closing bases 31 on both sides are driven to move outward, and the gap between the clamping jaw housings 33 is expanded; S2. Place the aluminum component to be clamped between the clamping jaws housing 33, drive the cylinder 24 to retract the lifting seat 241, and the clamping jaw housing 33 moves inward and drives the clamping jaw unit 342 to approach the surface of the aluminum component. Each individual clamping jaw unit 342 is pushed out by the clamping jaw return spring 341, so that each individual clamping jaw unit 342 fits on the surface of the aluminum component according to the surface contour of the component, and the elastic wrapping cloth 343 between the clamping jaw units 342 will also wrap on the surface of the component; S3, when the position of the clamping jaw unit 342 is determined, the locking rod 352 is pulled to make it stuck on the fastening slide 332, at this time, the two ends of the locking and compacting block 35 are locked in position by the fastening slide 332 and the pulling of the locking rod 352, and the locking and compacting block 35 is close to the clamping jaw unit 342, clamping each clamping jaw unit 342, and the position of the clamping jaw unit 342 is fixed at this time, and the clamping jaw housing 33 is pushed inward through the clamp arm opening and closing mechanism 2, so that the clamping jaw unit 342 and the elastic wrapping cloth 343 that have adapted to the contour of the component are further clamped on the surface of the component; S4. The movable base 51 can move along with the movable platform 4, so that the working position of the working platform 43 is synchronized with the lifting position of the bottom support mechanism 5. When the movable base 51 moves at the bottom of the component, the bottom support platform 53 can move up and down and be lifted by the lifting return spring 532. It can adapt to the shape of the bottom of the component by vertical movement. When it reaches the working area, the device working on the component will press down to apply pressure to the component. At this time, the pressing wheel 563 will be pressed down, and the top contact plate 562 will contact the nearby connecting synchronization shaft 523, pushing the connecting synchronization shaft 523 out, making the angle between the bottom hinge rod 521 and the top hinge rod 522 larger, and pushing the bottom support platform 53 upward to support both sides of the processing area.

[0029] The above shows and describes the basic principles, main features and advantages of the present invention. Technical personnel in this industry should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not used to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A processing fixture for automotive aluminum parts, comprising a fixture base (1), characterized in that: The outer surface of the clamp base (1) is provided with a fixed installation groove (11), the top surface of the clamp base (1) is provided with a sliding installation groove (12), the inner surface of the fixed installation groove (11) is provided with a clamp arm opening and closing mechanism (2), the top surface of the clamp arm opening and closing mechanism (2) is provided with a fitting clamping claw mechanism (3), the inner surface of the sliding installation groove (12) is slidably connected to a mobile platform (4), the outer surface of the mobile platform (4) is provided with a mounting hole (41), the inner surface of the mounting hole (41) is threadedly connected with a positioning bolt (411), one end of the positioning bolt (411) is fixedly connected to a mounting platform arm (42), one end of the mounting platform arm (42) is fixedly connected to a working platform (43), and the top surface of the mobile platform (4) is provided with a bottom supporting mechanism (5).

2. The automotive aluminum parts processing fixture according to claim 1 is characterized in that: The clamp arm opening and closing mechanism (2) comprises a fixed mounting platform (21), the fixed mounting platform (21) being fixedly connected to the inner surface of the fixed mounting groove (11), the outer surface of the fixed mounting platform (21) being fixedly connected to a top bracket (211), the inner surface of the top bracket (211) being provided with a top sliding groove (212), the bottom surface of the fixed mounting platform (21) being fixedly connected to a bottom mounting platform (23), the outer surface of the bottom mounting platform (23) being fixedly connected to a driving cylinder (24), the bottom surface of the driving cylinder (24) being fixedly connected to a lifting seat (241), the two ends of the lifting seat (241) being hingedly connected to connecting arms (242), the two sides of the bottom mounting platform (23) being hingedly connected to opening and closing arms (25), the outer surfaces of the opening and closing arms (25) being provided with traction grooves (251).

3. The automotive aluminum parts processing fixture according to claim 2 is characterized in that: The number of the fixed installation platforms (21) is two, and the two fixed installation platforms (21) are symmetrically distributed with the central axis of the fixture base (1) as the symmetry axis; the number of the top brackets (211) on each fixed installation platform (21) is two, and the two top brackets (211) are symmetrically distributed with the central axis of the fixed installation platform (21) as the symmetry axis; and the two ends of the connecting arm (242) are respectively hingedly connected to the lifting seat (241) and the opening and closing arm (25).

4. The automotive aluminum parts processing fixture according to claim 1 is characterized in that: The fitting clamping jaw mechanism (3) comprises an opening and closing base (31), the opening and closing base (31) being slidably connected to the top surface of the top bracket (211), the bottom surface of the opening and closing base (31) being provided with a traction movable groove (311), the inner surface of the traction movable groove (311) being fixedly connected with a connecting pin (312), the top surface of the opening and closing base (31) being fixedly connected with a clamping jaw shell (33), the outer surface of the clamping jaw shell (33) being provided with a locking movable groove (331), one end of the clamping jaw shell (33) being fixedly connected with a fastening slide (332), and the clamping jaw shell (33) being fixedly connected with a locking movable groove (331). The inner surface of the claw housing (33) is slidably connected to a movable column (34), the outer surface of the movable column (34) is sleeved with a clamping claw return spring (341), one end of the movable column (34) is fixedly connected to a clamping claw unit (342), the outer surface of the clamping claw unit (342) is fixedly connected to an elastic wrapping cloth (343), the inner surface of the claw housing (33) is slidably connected to a locking and compacting block (35), one end of the locking and compacting block (35) is fixedly connected to a connecting column (351), and the outer surface of the locking and compacting block (35) is rotatably connected to a locking pull rod (352).

5. The automotive aluminum parts processing fixture according to claim 4 is characterized in that: The traction movable groove (311) is slidably connected to the outer surface of the opening and closing arm (25), the connecting pin (312) is slidably connected to the inner surface of the traction groove (251), the number of the opening and closing bases (31) on each fixed installation platform (21) is two, and the two opening and closing bases (31) are symmetrically distributed with the central axis of the fixed installation platform (21) as the symmetry axis, the number of the clamping jaw shells (33) is two, and the two clamping jaw shells (33) are symmetrically distributed with the central axis of the clamp base (1) as the symmetry axis, the movable column (34) penetrates the clamping jaw shell (33) and is slidably connected to the inner wall thereof, and the movable column (34) is disposed on the outer surface of the clamping jaw shell (33). The side surfaces are equidistantly distributed, and the movable columns (34) are symmetrically distributed on the outer surface of each clamping jaw shell (33), both ends of the elastic wrapping cloth (343) are fixedly connected to the clamping jaw unit (342), the locking and compacting block (35) is slidably connected to the outer surface of the clamping jaw unit (342), the connecting column (351) passes through the clamping jaw unit (342) and is slidably connected to the inner surface thereof, the locking and compacting block (35) is slidably connected to the inner surface of the locking movable groove (331), the locking pull rod (352) is slidably connected to the outer surface of the clamping jaw shell (33), and the locking pull rod (352) is slidably connected to the outer surface of the fastening slide (332).

6. The automotive aluminum parts processing fixture according to claim 1 is characterized in that: The bottom supporting mechanism (5) comprises a movable base (51), wherein the movable base (51) is fixedly connected to the top surface of the movable platform (4), the top surface of the movable base (51) is fixedly connected to a hinged mounting seat (52), the top surface of the movable base (51) is fixedly connected to an intermediate hinged seat (5211), the inner surface of the hinged mounting seat (52) is hingedly connected to a bottom hinged rod (521), one end of the bottom hinged rod (521) is rotatably connected to a top hinged rod (522), the outer surface of the bottom hinged rod (521) is rotatably connected to a connecting synchronous shaft (523), the top surface of the top hinged rod (522) is hingedly connected to a bottom supporting platform (53), the bottom surface of the bottom supporting platform (53) is fixedly connected to a spring mounting column (531), and the outer surface of the spring mounting column (531) is sleeved A lifting and restoring spring (532) is provided, the outer surface of the connecting synchronous shaft (523) is rotatably connected to a synchronous moving plate (54), one end of the synchronous moving plate (54) is fixedly connected to a locking pin (541), the top surface of the mobile platform (4) is fixedly connected to a limiting side plate (55), the outer surface of the limiting side plate (55) is provided with a path limiting groove (551), the inner surface of the mobile platform (4) is slidably connected to a pressing hinge seat (56), the top surface of the pressing hinge seat (56) is bolted to a bottom contact plate (561), the top surface of the bottom contact plate (561) is bolted to a top contact plate (562), the outer surface of the top contact plate (562) is rotatably connected to a pressing wheel (563), and the bottom surface of the pressing hinge seat (56) is fixedly connected to a pressing and restoring spring (564).

7. The automotive aluminum parts processing fixture according to claim 6 is characterized in that: The number of the articulated mounting seats (52) is two, and the two articulated mounting seats (52) are equidistantly distributed on the top surface of the movable base (51); the top surface of the intermediate articulated seat (5211) is hingedly connected with a bottom articulated rod (521); the number of the bottom articulated rods (521) and the number of the top articulated rods (522) are both six, and the six bottom articulated rods (521) and the six top articulated rods (522) are all equidistantly and symmetrically distributed on the top surface of the movable base (51); the number of the connecting synchronization shafts (523) is three, and the six bottom articulated rods (521) and the six top articulated rods (522) are all rotationally connected via the connecting synchronization shafts (523); the spring mounting column (531) penetrates to the inner surface of the intermediate articulated seat (5211); The lifting and restoring spring (532) is slidably connected to the top surface of the middle hinge seat (5211), the number of the synchronous moving plate (54) and the limiting side plate (55) are both two, and the two synchronous moving plates (54) and the two limiting side plates (55) are symmetrically distributed with the central axis of the moving platform (4) as the symmetry axis, the locking pin (541) is slidably connected to the inner surface of the path limiting groove (551), the pressing hinge seat (56) penetrates the inner surface of the moving platform (4) and is slidably connected to its inner wall, the bottom contact plate (561) and the top contact plate (562) are both slidably connected to the outer surface of the connecting synchronous shaft (523), and the bottom surface of the pressing and restoring spring (564) is slidably connected to the top surface of the moving platform (4).

8. The method for using the automotive aluminum parts processing fixture according to claim 1 comprises the following steps: S1, start the driving cylinder (24) to push the lifting seat (241) downward, the lifting seat (241) pulls the opening and closing arms (25) through the connecting arms (242) on both sides to rotate around the connection point, so as to open and close, and under the action of the traction groove (251), pushes the connecting pin (312) outward, and drives the opening and closing bases (31) on both sides to move outward, so that the gap between the clamping claw shells (33) is expanded; S2. The aluminum component to be clamped is placed between the clamping jaw housings (33), and the driving cylinder (24) retracts the lifting seat (241). The clamping jaw housings (33) move inward and drive the clamping jaw units (342) to approach the surface of the aluminum component. Each individual clamping jaw unit (342) is pushed out by the clamping jaw return spring (341), so that each individual clamping jaw unit (342) fits on the surface of the aluminum component according to the surface contour of the component, and the elastic wrapping cloth (343) between the clamping jaw units (342) is also wrapped on the surface of the component; S3, when the position of the clamping jaw unit (342) is determined, the locking rod (352) is pulled to make it clamped on the fastening slide (332), at which time the two ends of the locking and compacting block (35) are respectively locked in position by the fastening slide (332) and the pulling of the locking rod (352), and the locking and compacting block (35) is tightly attached to the clamping jaw unit (342), clamping each clamping jaw unit (342), and the position of the clamping jaw unit (342) is fixed at this time, and at this time, the clamping jaw housing (33) is continuously pushed inward through the clamp arm opening and closing mechanism (2), so that the clamping jaw unit (342) and the elastic wrapping cloth (343) that have adapted to the contour of the component are further clamped on the surface of the component; S4. The movable base (51) can move along with the movable platform (4), so that the working position of the working platform (43) is synchronized with the lifting position of the bottom support mechanism (5). When the movable base (51) moves at the bottom of the component, the bottom support platform (53) can move up and down and be lifted by the lifting return spring (532), and move vertically to adapt to the shape of the bottom of the component. When it reaches the working area, the device working on the component will press down to apply pressure to the component. At this time, the pressing wheel (563) will be pressed down, and the top contact plate (562) will contact the adjacent connecting synchronous shaft (523), push the connecting synchronous shaft (523) out, so that the angle between the bottom hinge rod (521) and the top hinge rod (522) becomes larger, and the bottom support platform (53) is pushed up to support both sides of the processing area.

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