Brake drum drilling device

Abstract

The present invention belongs to the technical field of brake drum production equipment, specifically a drilling device for a brake drum, including a base, a material collection box, a fixture mechanism, a lifting seat and a chamfering cutter block, a material collection box for collecting metal scraps and cooling waste liquid is welded on the middle of the upper side of the base, a stepper motor that can be driven in a forward and reverse direction is embedded and installed in the middle of the inner side of the material collection box, a lifting seat is welded and fixed on the edge of one side of the base close to the material collection box, the output shaft of the stepper motor is docked with the middle of the workbench, and a fixture mechanism for clamping the brake drum is symmetrically arranged on both sides of the workbench, a guide seat is slidably connected to one side of the lifting seat, a multi-axis device assembly is installed on the side of the guide seat away from the lifting seat, a jacket is arranged at an equal angle on the lower side of the multi-axis device assembly, a collet is docked inside the jacket, and a twist drill is inserted in the built-in groove of the collet. The present invention can chamfer the upper edge of the through hole after drilling the brake drum, without sending the brake drum to the next station for chamfering and deburring.

Description

Technical Field

[0001] The invention belongs to the technical field of brake drum production equipment, in particular to a brake drum drilling device. Background Art

[0002] The brake drum is part of the drum brake system. When braking, the piston applies pressure to the two pairs of half-moon-shaped brake shoes, making them close to the inner wall of the drum chamber, thereby generating friction to stop the rotation of the wheel. The basic shape of the brake drum is drum-shaped, and a flange structure is provided on the mounting surface. When the brake drum is used, it needs to be connected with the matching fastening bolts through the mounting holes on the flange. When processing the brake drum, a corresponding drilling device is required to drill holes on the surface of the flange.

[0003] When drilling multiple through holes on the flange of the brake drum, the existing drilling device needs to adjust the placement of the brake drum, or use a multi-axis assembly to connect multiple twist drills to drill the brake drum. However, such drilling processing can only punch holes. After the drilling is completed, the brake drum needs to be transported to the next station to use chamfering processing equipment for chamfering processing, which makes the production efficiency of the brake drum low. Summary of the invention

[0004] The object of the present invention is to provide a brake drum drilling device to solve the problems raised by the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a drilling device for a brake drum, comprising a base, a material collection box, a clamping mechanism, a lifting seat and a chamfering cutter block, a material collection box for collecting metal scraps and cooling waste liquid is welded in the middle of the upper side of the base, a stepping motor capable of forward and reverse driving is embedded in the middle of the inner side of the material collection box, and a lifting seat is welded and fixed on one side edge of the base close to the material collection box.

[0006] The output shaft of the stepper motor is docked with the middle of the workbench, and clamp mechanisms for clamping the brake drum are symmetrically arranged on both sides of the workbench. A guide seat is slidably connected to one side of the lifting seat, and a multi-axis assembly is installed on the side of the guide seat away from the lifting seat. A sleeve is arranged at an equal angle on the lower side of the multi-axis assembly, and a collet is docked inside the sleeve. A twist drill is inserted in the built-in groove of the collet, and the chamfering block is connected to the twist drill through the positioning hole in the middle and the chamfering block, and three groups of mounting grooves are provided at equal angles on the outer edge of the chamfering block, and bayonet slots are provided on both sides of the inner walls of the three groups of mounting grooves.

[0007] Preferably, a lifting motor is installed on the top of the lifting seat, and a guide groove is opened on the side of the lifting seat close to the guide seat, and the upper and lower ends of the inner wall of the guide groove are connected to the screw rod through bearings, the upper end of the screw rod extends through the bearing and connects with the output end of the lifting motor, and one end of the guide seat is inserted into the guide groove and threadedly connected to the screw rod.

[0008] Preferably, a slot is provided on the lower edge surface of the jacket, a fixing strip is inserted into the slot, a locking screw connected to the fixing strip is passed through the outer wall of the jacket, and a limiting ring is welded to the bottom of the fixing strip.

[0009] Preferably, a docking block set at an equal angle is welded to the inner wall of the limiting ring, a limiting hole is opened inside the docking block, a spring is connected to the inner side of the limiting hole, both ends of the spring are docked with the ejector pin, and one end of the ejector pin extending out of the limiting hole is docked with the snap-on socket on the inner wall of the mounting groove.

[0010] Preferably, the fixture mechanism includes a fixed cylinder, a placement table, a cross slot, a cylinder, a push table, a connecting frame, a U-shaped rod, an inner clamping block, a support rod, an extension arm, a slide groove, a mounting port, an outer clamping block and a splash shield, and the fixed cylinder is fixed to both sides of the workbench;

[0011] A placement platform for placing the brake drum is welded on the upper side edge of the fixed cylinder, a cross groove is opened in the middle of the placement platform, and a splash shield is inserted on the upper edge of the fixed cylinder.

[0012] Preferably, a cylinder is installed through the middle of the lower side of the fixed cylinder, a push platform is installed at the output end of the top of the cylinder through a fastener, and a connecting frame is fixed on the upper side of the push platform;

[0013] The connecting frame is composed of a column and an annular rod. The bottom end of the column of the connecting frame is welded to the upper side of the push platform, and the top of the column of the connecting frame is welded to the annular rod.

[0014] Preferably, the annular rod of the connecting frame is rotatably connected to the end connecting sleeve of the U-shaped rod, the middle part of the U-shaped rod is movably connected to one end of the inner clamping block, and the inner side of the inner clamping block is rotatably connected to the lower edge of the cross groove through a movable seat.

[0015] Preferably, a support rod is welded to the lower edge of the push table, a sliding rod is fixed to the bottom end of the support rod, and a mounting opening is opened on the inner side of the outer edge of the placement table, and the mounting opening is movably connected to one end of the extension arm through a rotating shaft;

[0016] A sliding groove is provided on the inner wall of the extension arm away from the installation opening, and the sliding groove slides with the sliding rod at the bottom end of the support rod, and an outer clamping block is welded on the outer wall of the upper end of the extension arm.

[0017] Preferably, an annular track is welded to the upper edge of the inner wall of the material collection box, a guide steel ball is embedded and installed on the upper side of the annular track, and drainage pipes are installed at the bottom of both sides of the material collection box.

[0018] Preferably, fixing rods are symmetrically welded to the bottom of both sides of the workbench, and cleaning brushes are installed on the lower sides of the fixing rods, and the cleaning brushes fit the bottom surface of the inner side of the aggregate box.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. The present invention installs a limit ring for assembling a chamfering cutter block on the outer side of the jacket of the multi-axis assembly, and the ejector pin is inserted into the bayonet through a spring, so that the chamfering cutter block can be sleeved and assembled on the outer side of the twist drill. When the multi-axis assembly is started to drive multiple sets of jackets, collets, twist drills and chamfering cutter blocks to rotate synchronously, after the twist drill drills a through hole in the flange on the brake drum, the multi-axis assembly is controlled by programming to continue to move downward to drive the chamfering cutter block to chamfer the upper edge of the through hole drilled on the brake drum, and there is no need to send the brake drum to the next station for chamfering and deburring after drilling.

[0021] 2. The present invention drives the push platform downward by starting the cylinder, so that the connecting frame on the top of the push platform cooperates with the U-shaped rod to drive the inner clamping block to expand outward and tighten the inner wall surface of the brake drum. At the same time, the downward movement of the push platform drives the support rod to deflect the extension arm downward, so that the outer clamping block on the top of the extension arm is tightly buckled on the reinforcement belt flange of the outer edge of the brake drum, and can provide an inclined downward clamping force from the outside of the brake drum to the inside, so as to avoid the brake drum from shaking and deviating when drilling a hole in the brake drum. The brake drum can be clamped accurately and positioned by the synchronous clamping of the inside and outside of the brake drum by the present invention;

[0022] 3. The present invention realizes 180° reciprocating rotation through the forward and reverse operation of the stepping motor, transports the clamped brake drum to the lower side of the multi-axis assembly, and guides out the drilled brake drum and takes it out. When taking out the drilled brake drum, the next brake drum to be drilled can be placed on the vacated fixture mechanism, thereby improving the working efficiency of the present invention;

[0023] 4. In the present invention, since the bottom of the aggregate box is high in the middle and low at the outer edge, the waste liquid will automatically flow to the outer edge of the aggregate box, and the forward and reverse rotating workbench will drive the cleaning brush at the bottom through the fixed rod to reciprocately scrape the bottom surface of the aggregate box, so that the waste generated by the brake drum drilling is collected in the aggregate box, which is convenient for regular and quick cleaning. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0025] Figure 1 It is a schematic diagram of the main structure of the present invention;

[0026] Figure 2 It is a schematic diagram of the main cross-sectional structure of the present invention;

[0027] Figure 3It is a schematic diagram of the main cross-sectional structure of the jacket of the present invention;

[0028] Figure 4 It is a schematic diagram of the top cross-sectional structure of the butt joint between the limit ring and the chamfering cutter block of the present invention;

[0029] Figure 5 It is a schematic diagram of the top cross-sectional structure of the chamfering cutter block of the present invention;

[0030] Figure 6 For the present invention Figure 3 A schematic diagram of the enlarged structure at A in the middle;

[0031] Figure 7 It is a schematic diagram of the top view of the aggregate box of the present invention;

[0032] Figure 8 It is a schematic diagram of the front cross-sectional structure of the clamp mechanism of the present invention in a state of clamping the brake drum;

[0033] Fig. 9 It is a schematic diagram of the front cross-sectional structure of the clamp mechanism of the present invention when the brake drum is not clamped;

[0034] Fig.10 It is a schematic diagram of the top view of the clamp mechanism of the present invention;

[0035] Fig.11 It is a schematic diagram of the structure of the workbench of the present invention when viewed from above;

[0036] Fig.12 It is a top view structural schematic diagram of the connection between the connecting frame and the U-shaped rod of the present invention.

[0037] In the figure: 1, base; 2, material collection box; 3, stepper motor; 4, workbench; 5, fixture mechanism; 51, fixing cylinder; 52, placing table; 53, cross slot; 54, cylinder; 55, push table; 56, connecting frame; 57, U-shaped rod; 58, inner clamping block; 59, support rod; 510, extension arm; 511, slide groove; 512, installation port; 513, outer clamping block; 514, splash cover; 6, lifting seat; 61, lifting motor; 6 2. Screw rod; 63. Guide seat; 64. Multi-axis assembly; 7. Jacket; 71. Collet; 72. Twist drill; 73. Slot; 74. Fixing strip; 75. Locking screw; 76. Limiting ring; 77. Docking block; 78. Limiting hole; 79. Spring; 710. Ejector pin; 8. Chamfering block; 81. Positioning hole; 82. Mounting groove; 83. Bayonet; 9. Annular track; 10. Drain pipe; 11. Fixing rod; 12. Cleaning brush. DETAILED DESCRIPTION

[0038] 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 technicians in this field without creative work are within the scope of protection of the present invention.

[0039] See also Figure 1 , Figure 2 and Figure 7 The present invention provides a technical solution: a drilling device for a brake drum, comprising a base 1, a material collecting box 2, a clamping mechanism 5, a lifting seat 6 and a chamfering knife block 8, a material collecting box 2 for collecting metal scraps and cooling waste liquid is welded on the middle part of the upper side of the base 1, a stepping motor 3 that can be driven in a forward and reverse direction is embedded and installed in the middle part of the inner side of the material collecting box 2, a lifting seat 6 is welded and fixed to the edge of one side of the base 1 close to the material collecting box 2, a lifting motor 61 is installed on the top of the lifting seat 6, a guide groove is opened on the side of the lifting seat 6 close to the guide seat 63, and the upper and lower ends of the inner wall of the guide groove are connected to the screw rod 62 through bearings, the upper end of the screw rod 62 extends through the bearing and connects with the output end of the lifting motor 61, one end of the guide seat 63 is inserted into the guide groove and is threadedly connected to the screw rod 62, one side of the lifting seat 6 is slidably connected to the guide seat 63, and a plurality of guide seats 63 are installed on the side away from the lifting seat 6. The multi-axis device assembly 64, the guide groove is also provided with a light rod parallel to the screw rod 62, and the light rod is slidably connected to the guide seat 63, the output shaft of the stepper motor 3 is docked with the middle of the workbench 4, and the two sides of the workbench 4 are symmetrically provided with a clamp mechanism 5 for clamping the brake drum. The two sides of the workbench 4 are fan-shaped structures, and two groups of clamp mechanisms 5 are provided. By starting the stepper motor 3 to rotate 180° in the forward and reverse directions, the two groups of clamp mechanisms 5 can complete the processing switching of the brake drum, and the brake drum to be processed can be rotated and placed at the lower side position of the multi-axis device assembly 64, and the brake drum after drilling processing can be rotated out of the drilling station. When the lifting motor 61 on the top of the lifting seat 6 is started, the screw rod 62 can be driven to rotate forward or reverse, thereby driving the guide seat 63 and the multi-axis device assembly 64 to move down or up, which is convenient for drilling the brake drum.

[0040] See also Figure 1-Figure 3A jacket 7 is provided at an equal angle on the lower side of the multi-axis assembly 64, a collet 71 is docked inside the collet 7, a twist drill 72 is inserted in the built-in groove of the collet 71, and the chamfering block 8 is sleeved with the twist drill 72 through the positioning hole 81 in the middle and the chamfering block 8, and three groups of mounting grooves 82 are provided at equal angles on the outer edge of the chamfering block 8, and both sides of the inner walls of the three groups of mounting grooves 82 are provided with bayonet holes 83, and the cross-section of the mounting groove 82 is a "U"-shaped structure, the upper end of the collet 71 is a threaded rod, and the threaded rod at the upper end of the collet 71 is threadedly connected to the reserved groove inside the jacket 7, the bottom end of the collet 71 is a hollow regular hexagonal prism structure, and the upper side of the hollow regular hexagonal prism structure is a hollow boss structure, and the inner walls of the hollow regular hexagonal prism structure and the hollow boss structure are provided with three groups of tightening gaps distributed at equal angles.

[0041] In specific implementation, when drilling holes in the brake drum, multiple sleeves 7 can be connected through the set multi-axis assembly 64, so that multi-hole synchronous drilling can be performed on the flange on the upper side of the brake drum to ensure the accuracy and efficiency of the brake drum drilling. Before drilling, the twist drill 72 needs to be inserted into the collet 71, and the hollow hexagonal prism structure at the bottom of the collet 71 is rotated with a wrench, so that the threaded rod at the top of the collet 71 is threadedly locked with the reserved groove inside the sleeve 7, so that the hollow boss structure on the outer wall of the collet 71 squeezes the inner wall of the sleeve 7, so that the collet 71 clamps and limits the twist drill 72 through the shrinkage gap of the inner wall.

[0042] See also Figure 3 and Figure 4 A slot 73 is provided on the lower edge surface of the jacket 7, a fixing strip 74 is inserted into the slot 73, a locking screw 75 connected to the fixing strip 74 is passed through the outer wall of the jacket 7, a limiting ring 76 is welded to the bottom of the fixing strip 74, the fixing strip 74 is arranged on the upper surface of the limiting ring 76 at an equal angle of 120°, and the fixing strip 74 is an arc-shaped structure.

[0043] During specific implementation, the arc-shaped structure fixing strip 74 with equal angles on the upper side of the limit ring 76 is inserted into the slot 73 on the lower edge surface of the jacket 7, and the locking screw 75 is used to penetrate the outer wall of the jacket 7 and then connected to the fixing strip 74 in a limiting manner, so that the limit ring 76 can be quickly assembled on the lower side of the jacket 7, thereby providing a docking installation position for the use of the chamfering tool block 8.

[0044] See also Figure 3-Figure 6A docking block 77 set at an equal angle is welded to the inner wall of the limiting ring 76, and a limiting hole 78 is provided inside the docking block 77. A spring 79 is connected to the inner side of the limiting hole 78. Both ends of the spring 79 are docked with the ejector pin 710. One end of the ejector pin 710 extending out of the limiting hole 78 is docked with the bayonet 83 on the inner wall of the mounting groove 82. The ejector pin 710 forms a snap-fit ​​structure through the spring 79 and the bayonet 83. The thickness of the docking block 77 is consistent with the inner wall spacing of the mounting groove 82, and the mounting groove 82 has an arc-shaped structure.

[0045] When all the twist drills 72 are clamped, the positioning hole 81 in the middle of the chamfering tool block 8 is sleeved with the twist drill 72. Since the chamfering tool block 8 adopts a three-edged chamfering tool head, the chamfering tool block 8 is rotated so that the inner groove of the blade of the chamfering tool block 8 corresponds to the position of the docking block 77 on the inner wall of the limiting ring 76. The chamfering tool block 8 is rotated again so that the mounting groove 82 on the outer edge of the chamfering tool block 8 is positioned and docked with the docking block 77. When the chamfering tool block 8 is rotated until the mounting groove 82 is completely aligned with the docking block 77, the spring 79 inside the docking block 77 will push the ejector pins 710 at both ends to be inserted into the bayonet 83 on both sides of the inner wall of the mounting groove 82, so that the chamfering tool block 8 without a handle can be quickly assembled at the outer position of the twist drill 72.

[0046] When the driving motor on the upper side of the multi-axis assembly 64 is started, multiple sets of jackets 7, collets 71, twist drills 72 and chamfering cutter blocks 8 can be driven to rotate synchronously. When the lifting motor 61 starts the screw rod 62 to drive the guide seat 63 to move downward, the guide seat 63 can be controlled by programming to drive the multi-axis assembly 64 to move downward, so that multiple sets of twist drills 72 can open holes in the flange on the brake drum. After the twist drill 72 drills a through hole in the flange on the brake drum, the guide seat 63 continues to drive the multi-axis assembly 64 downward, so that the chamfering cutter block 8 sleeved with the twist drill 72 can chamfer the upper edge of the through hole opened on the brake drum, without sending the brake drum to the next station for chamfering and deburring.

[0047] When the multi-axis assembly 64 drives the jacket 7 and the twist drill 72 to rotate forward, the brake drum flange can be drilled and cut. At the same time, since one side of the arc-shaped end of the mounting groove 82 of the chamfering cutter block 8 is open, and the other side of the arc-shaped end of the mounting groove 82 is a closed surface, when the jacket 7 rotates forward, the docking block 77 on the inner wall of the limit ring 76 can be driven to press against the closed surface of the arc-shaped end of the mounting groove 82, ensuring that the chamfering cutter block 8 will not loosen during chamfering.

[0048] On the contrary, when it is necessary to chamfer the through hole of the brake drum flange with different inclinations, the chamfering block 8 is rotated in the opposite direction along the limit ring 76 so that the snap-on 83 is disengaged from the push pin 710, and the mounting groove 82 of the chamfering block 8 is disengaged from the docking block 77 on the inner wall of the limit ring 76. At this time, chamfering blocks 8 of different specifications can be replaced inside the limit ring 76.

[0049] See also Figure 2 , Figure 7 , Figure 8 , Fig. 9 , Fig.10 and Fig.11 The clamp mechanism 5 includes a fixed cylinder 51, a placement platform 52, a cross slot 53, a cylinder 54, a push platform 55, a connecting frame 56, a U-shaped rod 57, an inner clamping block 58, a support rod 59, an extension arm 510, a slide groove 511, a mounting port 512, an outer clamping block 513 and a splash shield 514. The fixed cylinder 51 is fixed to both sides of the workbench 4; a placement platform 52 for placing the brake drum is welded to the upper edge of the fixed cylinder 51, a cross slot 53 is provided in the middle of the placement platform 52, and a splash shield 514 is plugged into the upper edge of the fixed cylinder 51; the splash shield 514 on the outer edge of the fixed cylinder 51 is a trumpet-shaped structure, the middle part of the lower side of the fixed cylinder 51 is set as a hollow conical structure, and the lower side surface of the fixed cylinder 51 is provided with arc-shaped blanking holes for discharging waste at equal angles.

[0050] In specific implementation, the brake drum is placed on the surface of the placement table 52 on the upper side of the fixed cylinder 51, and the trumpet-shaped splash shield 514 is plugged into the upper edge of the fixed cylinder 51. The splash shield 514 can block the waste chips generated by drilling and the splash of the coolant used for drilling cooling, and the waste chips and coolant generated by drilling are introduced into the fixed cylinder 51 along the cross groove 53 in the middle of the placement table 52, so as to ensure the cleanliness of the drilling processing area;

[0051] At the same time, the lower middle part of the fixed cylinder 51 is set to a conical structure, which can guide the waste and waste liquid to the arc-shaped drop holes, so that the waste and waste liquid generated by the brake drum drilling can be concentrated into the collection box 2 through the arc-shaped drop holes distributed at equal angles for collection.

[0052] See also Figure 2 , Figure 7 , Figure 8 , Fig. 9 , Fig.10 and Fig.12 A cylinder 54 is installed through the middle part of the lower side of the fixed cylinder 51, and a push platform 55 is installed on the output end of the top of the cylinder 54 through a fastener, and a connecting frame 56 is fixed on the upper side of the push platform 55; the connecting frame 56 is composed of a column and an annular rod, the bottom end of the column of the connecting frame 56 is welded to the upper side of the push platform 55, and the top of the column of the connecting frame 56 is welded to the annular rod; the annular rod of the connecting frame 56 is rotatably connected with the end connecting sleeve of the U-shaped rod 57, the middle part of the U-shaped rod 57 is movably connected with one end of the inner clamping block 58, and the inner side of the inner clamping block 58 is rotatably connected with the lower edge of the cross groove 53 through a movable seat.

[0053] In specific implementation, when drilling a hole in the flange of the brake drum, the brake drum needs to be placed upside down on the placement table 52 so that the flange is placed facing upwards. When the brake drum is placed on the placement table 52 on the top of the fixed cylinder 51, ensure that the brake drum is located within the four groups of outer clamps 513. At this time, start the cylinder 54 to drive the push platform 55 at the output end to move downward, so that the connecting frame 56 on the top of the push platform 55 pulls the U-shaped rods 57 with equal angles to move downward, thereby driving the inner clamp block 58 of the hook-shaped structure to rotate around the movable seat at the lower edge of the cross groove 53, so that the inner clamp block 58 is guided out from the upper side of the cross groove 53 when rotating, thereby driving the top ends of the four groups of inner clamp blocks 58 to expand outward at the same time, so that the four groups of inner clamp blocks 58 can press the inner wall surface of the brake drum against the limit when expanding, thereby ensuring that the brake drum to be drilled is stably placed.

[0054] See also Figure 7-Figure 10 A support rod 59 is welded to the lower edge of the push platform 55, and a sliding rod is fixed to the bottom end of the support rod 59. A mounting opening 512 is provided on the inner side of the outer edge of the placement platform 52, and the mounting opening 512 is movably connected to one end of the extension arm 510 through a rotating shaft; a sliding groove 511 is provided on the inner wall of the extension arm 510 on the side away from the mounting opening 512, and the sliding groove 511 slides with the sliding rod at the bottom end of the support rod 59, and an outer clamping block 513 is welded to the outer wall of the upper end of the extension arm 510, and the inner clamping block 58 and the outer clamping block 513 are distributed at equal angles of 90° with respect to the vertical center line of the push platform 55, and the inner clamping block 58 has a hook-shaped structure.

[0055] During specific implementation, the cylinder 54 drives the push platform 55 to move downward to drive the inner clamping block 58 to press against the inner wall of the brake drum. The push platform 55 moves downward to drive the support rod 59 at the lower edge to move downward, and the support rod 59 drives the bottom slide bar to move downward along the slide groove 511 inside the extension arm 510, so that the extension arm 510 rotates around the rotation axis inside the installation opening 512 when deflecting downward, so that the outer clamping block 513 at the top of the extension arm 510 can be tightly buckled on the reinforcement belt flange part of the outer edge of the brake drum, and then the outer clamping block 513 provides an inclined downward clamping force to the brake drum when it is tightly buckled on the reinforcement belt flange part of the outer edge of the brake drum, so as to avoid the brake drum shaking and deflection when the brake drum is drilled by the present invention.

[0056] Since the outer side of the brake drum is a circular ring structure, when the brake drum is placed upside down, the flange of the brake drum faces upward, and the outer edge of the bottom of the brake drum is a protruding reinforcement belt structure. Reference may be made to the Chinese invention patent with application number 201210032671.7, which discloses a brake drum. The patent describes the basic contents of the drum body, reinforcement belt, reinforcement member and flange components.

[0057] See also Figure 2A circular track 9 is welded on the upper edge of the inner wall of the aggregate box 2, and a guide steel ball is embedded on the upper side of the circular track 9. Drain pipes 10 are installed at the bottom of both sides of the aggregate box 2, and a filter screen for filtering and intercepting drilling waste is provided at the docking end of the drain pipe 10 and the aggregate box 2; the bottom of the aggregate box 2 is a slope structure, and the central position of the bottom of the aggregate box 2 is higher than the edge position of the bottom of the aggregate box 2, and fixed rods 11 are symmetrically welded on the bottom of both sides of the workbench 4, and a cleaning brush 12 is installed on the lower side of the fixed rod 11, and the cleaning brush 12 fits the bottom surface of the inner side of the aggregate box 2.

[0058] During specific implementation, the stepper motor 3 is started to rotate forward, driving the first clamp mechanism 5 on the workbench 4 to convey the brake drum to be processed to the lower side of the multi-axis assembly 64, and the forward-rotating stepper motor 3 drives the second clamp mechanism 5 on the workbench 4 to convey the processed brake drum to a position away from the lifting seat 6, and the outer edge of the bottom of the workbench 4 moves along the annular track 9. At this time, the annular track 9 reduces the guide friction for the rotation of the workbench 4 through the guide steel balls embedded on the upper side, and the annular track 9 can provide a stable drilling support for the brake drum at one side of the workbench 4;

[0059] When the next brake drum drilling process is carried out, the stepper motor 3 is rotated 180° in the opposite direction to transport the clamped brake drum to the lower side of the multi-axis assembly 64, and the drilled brake drum is led out and taken out. When taking out the drilled brake drum, the push platform 55 is pushed upward by starting the cylinder 54, so that the push platform 55 squeezes the inner clamping block 58 of the hook structure through the connecting frame 56 and the U-shaped rod 57, so that the inner clamping block 58 is turned over and retracted to the inner position of the fixed cylinder 51 along the cross groove 53; while the cylinder 54 is started to push the push platform 55 upward, the support rod 59 at the bottom of the push platform 55 will pull the extension arm 510 to deflect upward around the rotation axis, so that the extension arm 510 will drive the outer clamping block 513 to disengage from the reinforcing belt structure that clamps the outer edge of the brake drum, so that it is convenient for the staff to hold the flange on the upper side of the brake drum to take out the drilled brake drum;

[0060] When the waste and waste liquid generated by drilling are introduced into the interior of the aggregate box 2, since the bottom of the aggregate box 2 is high in the middle and low at the outer edge, the waste liquid will automatically flow to the outer edge of the aggregate box 2, and the forward and reverse working table 4 will drive the cleaning brush 12 at the bottom through the fixed rod 11 to reciprocately scrape the bottom surface of the aggregate box 2, so that the waste generated by drilling in the aggregate box 2 can be concentrated and piled up, and by regularly opening the valves on the two groups of drainage pipes 10, the two groups of drainage pipes 10 can concentrate and drain the waste liquid in the aggregate box 2, and the waste generated by drilling the brake drum is filtered and intercepted by the filter screen arranged at the end of the drainage pipe 10, and at the same time, the concentrated drilling waste can be taken out by adsorption using a magnet, which is convenient for cleaning the aggregate box 2 after collecting the waste and waste liquid of the present invention.

[0061] To sum up, the base 1 is placed in the specified position and fixed, the brake drum is clamped on the clamping mechanism 5, the stepper motor 3 is started, driving the workbench 4 to rotate forward and reverse, and then the drilled brake drum is led out, and the clamped brake drum is transported to the lower side of the multi-axis assembly 64, and the lifting motor 61 on the lifting seat 6 drives the screw rod 62 and the guide seat 63 to be threadedly transmitted, so that the guide seat 63 moves downward along the screw rod 62 and the light rod, thereby driving the twist drill 72 clamped by the collet 71 through the multi-axis assembly 64 to drill the flange on the upper side of the brake drum. The multi-axis assembly 64 is a prior art and will not be elaborated on here. The contents not described in detail in this embodiment belong to the prior art known to technicians in this field.

[0062] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A drilling device for a brake drum, comprising a base (1), a material collecting box (2), a clamping mechanism (5), a lifting seat (6) and a chamfering blade (8), wherein a material collecting box (2) for collecting metal scraps and cooling waste liquid is welded to the middle of the upper side of the base (1), a stepping motor (3) capable of forward and reverse drive is embedded in the middle of the inner side of the material collecting box (2), and a lifting seat (6) is welded and fixed to the edge of one side of the base (1) close to the material collecting box (2), characterized in that: The output shaft of the stepper motor (3) is docked with the middle of the workbench (4), and the two sides of the workbench (4) are symmetrically provided with a clamp mechanism (5) for clamping the brake drum. One side of the lifting seat (6) is slidably connected with a guide seat (63), and a multi-axis device assembly (64) is installed on the side of the guide seat (63) away from the lifting seat (6). A sleeve (7) is arranged at an equal angle on the lower side of the multi-axis device assembly (64), and a collet (71) is docked inside the sleeve (7), and a twist drill (72) is inserted into the built-in groove of the collet (71). The chamfering tool block (8) is sleeved with the twist drill (72) and the chamfering tool block (8) through a positioning hole (81) in the middle. Three groups of mounting grooves (82) are provided at equal angles on the outer edge of the chamfering tool block (8), and both sides of the inner walls of the three groups of mounting grooves (82) are provided with bayonet holes (83); The clamp mechanism (5) comprises a fixed cylinder (51), a placement table (52), a cross slot (53), a cylinder (54), a push table (55), a connecting frame (56), a U-shaped rod (57), an inner clamping block (58), a support rod (59), an extension arm (510), a slide groove (511), a mounting opening (512), an outer clamping block (513) and a splash shield (514), and the fixed cylinder (51) is fixed to both sides of the workbench (4); A placement platform (52) for placing the brake drum is welded to the upper edge of the fixed cylinder (51), a cross groove (53) is provided in the middle of the placement platform (52), and a splash shield (514) is inserted into the upper edge of the fixed cylinder (51); A cylinder (54) is installed through the middle of the lower side of the fixed cylinder (51), a push platform (55) is installed at the output end of the top of the cylinder (54) through a fastener, and a connecting frame (56) is fixed on the upper side of the push platform (55); The connecting frame (56) is composed of a column and an annular rod, the bottom end of the column of the connecting frame (56) is welded to the upper side of the push platform (55), and the top of the column of the connecting frame (56) is welded to the annular rod; The annular rod of the connecting frame (56) is rotatably connected to the end connecting sleeve of the U-shaped rod (57), the middle part of the U-shaped rod (57) is movably connected to one end of the inner clamping block (58), and the inner side of the inner clamping block (58) is rotatably connected to the lower edge of the cross groove (53) through a movable seat; A support rod (59) is welded to the lower edge of the push platform (55), a sliding rod is fixed to the bottom end of the support rod (59), and a mounting opening (512) is provided on the inner side of the outer edge of the placement platform (52), and the mounting opening (512) is movably connected to one end of the extension arm (510) through a rotating shaft; A sliding groove (511) is provided on the inner wall of one side of the extension arm (510) away from the installation opening (512), and the sliding groove (511) slides with the sliding rod at the bottom end of the support rod (59), and an outer clamping block (513) is welded to the outer wall of the upper end of the extension arm (510).

2. The brake drum drilling device according to claim 1, characterized in that: A lifting motor (61) is installed on the top of the lifting seat (6); a guide groove is provided on one side of the lifting seat (6) close to the guide seat (63); and the upper and lower ends of the inner wall of the guide groove are connected to the screw rod (62) through bearings; the upper end of the screw rod (62) extends through the bearing and connects to the output end of the lifting motor (61); one end of the guide seat (63) is inserted into the guide groove and is threadedly connected to the screw rod (62).

3. The brake drum drilling device according to claim 1, characterized in that: A slot (73) is provided on the lower edge surface of the jacket (7), a fixing strip (74) is inserted into the slot (73), a locking screw (75) connected to the fixing strip (74) is passed through the outer wall of the jacket (7), and a limiting ring (76) is welded to the bottom of the fixing strip (74).

4. The brake drum drilling device according to claim 3, characterized in that: A docking block (77) arranged at an equal angle is welded to the inner wall of the limiting ring (76); a limiting hole (78) is provided inside the docking block (77); a spring (79) is connected to the inner side of the limiting hole (78); two ends of the spring (79) are docked with a push pin (710); one end of the push pin (710) extending out of the limiting hole (78) is docked with a bayonet (83) on the inner wall of the mounting groove (82).

5. The brake drum drilling device according to claim 1, characterized in that: An annular track (9) is welded to the upper edge of the inner wall of the material collection box (2), a guide steel ball is embedded in the upper side of the annular track (9), and drainage pipes (10) are installed at the bottom of both sides of the material collection box (2).

6. The brake drum drilling device according to claim 1, characterized in that: Fixed rods (11) are symmetrically welded to the bottom of both sides of the workbench (4), and a cleaning brush (12) is installed on the lower side of the fixed rod (11), and the cleaning brush (12) is in contact with the bottom surface of the inner side of the aggregate box (2).

Images