A mechanical casting positioning drilling device

Abstract

The present invention discloses a mechanical casting positioning drilling device in the field of metal processing technology, including a base, a fixing mechanism, a driving mechanism, a lifting mechanism and a transposition mechanism. A fixed disk is rotatably connected to the base, a drill bit is provided on the left side of the base, the driving mechanism is used to drive the drill bit to rotate, the lifting mechanism is used to drive the drill bit to reciprocate vertically, and the transposition mechanism is used to drive the fixed disk to rotate a fixed angle. The transposition mechanism and the lifting mechanism work alternately. The present invention has the following beneficial effects: 1. The distance between the mounting hole and the center of the annular casting is controlled by adjusting the position of the drill bit, and the angle between two adjacent mounting holes is controlled by the angle at which the fixed disk is driven to rotate each time by the transposition mechanism, which eliminates the work of making marks, and the opening position of the mounting hole is accurately positioned. 2. The present application can automatically realize the opening of each mounting hole without repeatedly aligning the drill bit with the mark, which can greatly simplify the operation and improve efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of metal processing, and in particular to a positioning drilling device for a mechanical casting. Background Art

[0002] Metal castings refer to a metal forming method in which liquid metal is poured into a mold cavity of a certain shape and size, and then cooled and solidified to obtain a blank or part. Metal castings come in a variety of shapes, and annular castings are an important category, such as ring gears and brake rings in engineering machinery, and annular flanges for connecting large pipes.

[0003] To facilitate installation, annular castings usually need to have mounting holes thereon, and the mounting holes are evenly arranged around the circumference. In the prior art, it is necessary to use a pencil to make multiple marks on the annular casting, and then align the drill bit with the marked positions to drill holes. The distances between the multiple marks and the center of the annular casting need to be consistent, and the angle between two adjacent marks also needs to be consistent, which makes the marking operation very cumbersome and prone to deviations, which in turn leads to deviations in the opening positions of the subsequent mounting holes, and the drill bit needs to align with the marks one by one to drill holes, resulting in low drilling efficiency. Summary of the invention

[0004] In order to solve the above problems, the present invention provides a mechanical casting positioning drilling device, and the present invention is achieved through the following technical solutions.

[0005] A mechanical casting positioning drilling device, comprising an annular casting, and further comprising:

[0006] A base, wherein a support plate is fixedly connected to the lower surface of the base symmetrically, a fixing plate is rotatably connected to the base, a through slot is opened on the left side of the base, and a drill bit is arranged in the through slot;

[0007] A fixing mechanism, wherein the fixing mechanism is arranged on a fixing plate, and the annular casting is sleeved on the outside of the fixing plate and fixed by the fixing mechanism;

[0008] A driving mechanism, the driving mechanism is used to drive the drill bit to rotate;

[0009] A lifting mechanism, the lifting mechanism is used to drive the drill bit to move vertically back and forth;

[0010] The transposition mechanism is used to drive the fixed plate to rotate a fixed angle, and the transposition mechanism and the lifting mechanism work alternately.

[0011] Furthermore, the fixing mechanism includes a fixing screw, a sliding seat and a fixing seat; a seat plate is fixedly connected to the fixing plate through a support rod, the fixing screw is rotatably connected between the seat plate and the fixing plate, the sliding seat is meshed with the fixing screw and is slidably connected to the support rod, movable grooves are evenly opened on the circumference of the fixing plate, the fixing seat is slidably connected in the movable grooves, a rubber seat is fixedly connected to one end of the fixing seat away from the center of the fixing plate, and a rocker arm is hinged between the fixing seat and the sliding seat.

[0012] Furthermore, the base is densely covered with balls, and a groove body adapted for the balls is opened on the base. A card plate is embedded and fixed above the groove body. The balls are movably connected in the groove body and the card plate, and the center of the balls is located below the upper surface of the card plate.

[0013] Further, the driving mechanism includes a driving box, a second outer cylinder and a motor; a support plate is fixedly connected between the support plates, a track groove is provided on the support plate, a track rod is fixedly connected in the track groove, a track seat is fixedly connected to the bottom of the driving box, the track seat is slidably connected to the track rod, an adjusting screw is rotatably connected to the right side of the driving box, the adjusting screw is meshed with the support plate on the right side, a cover box is fixedly connected to the left side of the driving box, a first outer cylinder is rotatably connected in the cover box, a first inner shaft is slidably connected in the first outer cylinder, an inner wall of the first outer cylinder and an outer wall of the first inner shaft are respectively provided with a first protrusion and a first groove that match each other, the drill bit is fixedly connected to the top of the first inner shaft, the second outer cylinder is rotatably connected between the left and right side plates of the driving box, the left end of the second outer cylinder is linked to the first outer cylinder through a first bevel gear pair, a second inner shaft is slidably connected in the second outer cylinder, the inner wall of the second outer cylinder and the outer wall of the second inner shaft are respectively provided with a second protrusion and a second groove that match each other, the motor is fixedly connected to the right side of the support plate, and the output shaft of the motor is butt-jointed with the second inner shaft through a coupling.

[0014] Furthermore, a limit rod is fixedly connected in the through slot, a limit seat is slidably connected to the limit rod, the first inner shaft is slidably connected in the limit seat, and a sliding rod is fixedly connected between the limit seat and the cover box.

[0015] The cam is connected to the front of the driving box by a first gear and a second gear is connected to the cam via a first gear connected to the front of the driving box; the cam is connected to the front of the driving box by a first gear connected to the front of the driving box; the cam is connected to the front of the driving box by a first gear connected to the front of the driving box; the cam is connected to the front of the driving box by a first gear connected to the cam.

[0016] Furthermore, the transposition mechanism includes a third inner shaft and a transmission box; a cavity is provided on the base, the cavity is sealed by a cover plate, a transposition shaft is rotatably connected to the cover plate, the fixed disk is fixedly connected to the top of the transposition shaft, a second worm gear is detachably connected to the bottom of the transposition shaft, a sliding cavity is provided at the right rear of the cavity, two ends of the third inner shaft are rotatably connected to the left side wall of the cavity and the right side wall of the sliding cavity respectively, a second worm gear meshing with the second worm gear is fixedly connected to the third inner shaft, the transmission box is slidably connected in the sliding cavity, and the transmission box is rotatably connected to the transmission box. A third outer cylinder is connected, and the third inner shaft is slidably connected in the third outer cylinder. The inner wall of the third outer cylinder and the outer wall of the third inner shaft are respectively provided with third protrusions and third grooves that adapt to each other. A connecting rod is fixedly connected between the transmission box and the driving box. A second rotating shaft is rotatably connected in the driving box on the right side of the shaft rod, and a second full gear is fixedly connected to the second rotating shaft. The third rotating shaft is rotatably connected between the top plate of the driving box and the bottom plate of the transmission box. The bottom of the third rotating shaft is linked to the second rotating shaft through the second bevel gear pair, and the top of the third rotating shaft is linked to the third outer cylinder through the third bevel gear pair.

[0017] Furthermore, ear plates are fixedly connected to the front and rear sides of the cover plate, avoidance grooves are opened on the front and rear sides of the cavity, the ear plates are fixed in the avoidance grooves by bolts, the bottom of the transposition shaft is fixedly connected to a center column, the bottom of the center column is fixedly connected to a locking screw, the bottom of the transposition shaft is evenly fixed with a positioning rod around the circumference of the center column, the second worm gear is plugged into the center column and the positioning rod, the locking screw is meshed with a locking disk, and a plurality of second worm gears are provided, and different second worm gears have different numbers of teeth.

[0018] Furthermore, the second full gear and the half gear have the same number of teeth, the transmission ratios of the two sub-bevel gears in the second bevel gear pair and the third bevel gear pair are both 1:1, and the number of starts of the second worm is 1.

[0019] The present invention fixes the annular casting by a fixing mechanism. When the device is working, the driving mechanism drives the drill bit to rotate, and the lifting mechanism drives the drill bit to reciprocate vertically. When the drill bit moves vertically, the mounting hole is opened, and then the transposition mechanism drives the annular casting to rotate a fixed angle, and then the next mounting hole is opened. The present invention has the following beneficial effects:

[0020] 1. The distance between the mounting hole and the center of the annular casting is controlled by adjusting the lateral position of the drill bit, and the angle between two adjacent mounting holes is controlled by the angle at which the transposition mechanism drives the fixed disk to rotate each time, which eliminates the need for marking and allows the mounting holes to be accurately positioned.

[0021] 2. This application can automatically realize the opening of each mounting hole without repeatedly aligning the drill bit with the mark, which can greatly simplify the operation and improve efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solution of the present invention, the drawings required for use in the description of the specific implementation methods 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 work.

[0023] Figure 1 : An axonometric view of a mechanical casting positioning drilling device according to the present invention;

[0024] Figure 2 : A three-dimensional schematic diagram of the bottom of a mechanical casting positioning drilling device according to the present invention;

[0025] Figure 3 : A cross-sectional view of a mechanical casting positioning drilling device according to the present invention;

[0026] Figure 4 : Figure 3 A partial enlarged view of point A shown;

[0027] Figure 5 : A three-dimensional schematic diagram of the fixing mechanism of the present invention;

[0028] Figure 6 : Schematic diagram of the installation of the ball of the present invention;

[0029] Figure 7 : Figure 3 A partial enlarged view of point B shown;

[0030] Figure 8 : Figure 3 A local enlarged view of point C shown;

[0031] Fig. 9: A schematic diagram of the installation of the second worm gear of the present invention;

[0032] Fig.10 : A schematic structural diagram of the base of the present invention;

[0033] Fig.11 : Schematic diagram of the installation and coordination of the driving mechanism, lifting mechanism and transposition mechanism of the present invention;

[0034] Fig.12 : A schematic diagram of the internal transmission of the drive box of the present invention;

[0035] Fig.13 : A partial cross-sectional view of the transmission box position of the present invention;

[0036] Fig.14 : Schematic diagram of the meshing of the half gear, the first full gear and the second full gear described in the present invention.

[0037] The reference numerals are as follows:

[0038] 100-ring casting;

[0039] 1-base, 11-support plate, 12-fixed plate, 13-through slot, 14-drill bit, 15-ball, 16-cage;

[0040] 2-fixing mechanism, 21-fixing screw, 22-sliding seat, 23-fixing seat, 24-support rod, 25-seat plate, 26-moving groove, 27-rubber seat, 28-swing rod;

[0041] 31-driving box, 32-second outer cylinder, 33-motor, 34-supporting plate, 35-track groove, 36-track rod, 37-track seat, 38-adjusting screw, 39-cover box, 310-first outer cylinder, 311-first inner shaft, 312-first protrusion, 313-first groove, 314-first bevel gear pair, 315-second inner shaft, 316-second protrusion, 317-second groove, 318-coupling, 319-limiting rod, 320-limiting seat, 321-sliding rod;

[0042] 41-lifting seat, 42-first worm gear, 43-slider, 44-first pulley, 45-swing arm, 46-shaft, 47-first worm, 48-half gear, 49-first rotating shaft, 410-first full gear, 411-second pulley, 412-belt;

[0043] 51-third inner shaft, 52-transmission box, 53-cavity, 54-cover plate, 55-transposition shaft, 56-second worm wheel, 57-sliding cavity, 58-second worm, 59-third outer cylinder, 510-third protrusion, 511-third groove, 512-connecting rod, 513-second rotating shaft, 514-second full gear, 515-third rotating shaft, 516-second bevel gear pair, 517-third bevel gear pair;

[0044] 61-ear plate, 62-avoidance groove, 63-bolt, 64-center column, 65-locking screw, 66-positioning rod, 67-locking plate. DETAILED DESCRIPTION

[0045] 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.

[0046] like Figure 1-14 As shown, the present invention has the following five specific embodiments. Example 1

[0047] A mechanical casting positioning drilling device includes an annular casting 100, and further includes:

[0048] A base 1, a support plate 11 is fixedly connected to the lower surface of the base 1 symmetrically, a fixing plate 12 is rotatably connected to the base 1, a through slot 13 is opened on the left side of the base 1, and a drill bit 14 is arranged in the through slot 13;

[0049] A fixing mechanism 2, the fixing mechanism 2 is arranged on a fixing plate 12, and the annular casting 100 is sleeved on the outside of the fixing plate 12 and fixed by the fixing mechanism 2;

[0050] A driving mechanism, the driving mechanism is used to drive the drill bit 14 to rotate;

[0051] A lifting mechanism, the lifting mechanism is used to drive the drill bit 14 to move back and forth vertically;

[0052] The transposition mechanism is used to drive the fixed plate 12 to rotate a fixed angle, and the transposition mechanism and the lifting mechanism work alternately.

[0053] Preferably, the fixing mechanism 2 includes a fixing screw 21, a slide 22 and a fixing seat 23; a seat plate 25 is fixedly connected to the fixing disk 12 through a support rod 24, the fixing screw 21 is rotatably connected between the seat plate 25 and the fixing disk 12, the slide 22 is meshed with the fixing screw 21 and is slidably connected to the support rod 24, movable grooves 26 are evenly opened on the circumference of the fixing disk 12, the fixing seat 23 is slidably connected in the movable grooves 26, one end of the fixing seat 23 away from the center of the fixing disk 12 is fixedly connected to a rubber seat 27, and a rocker rod 28 is hinged between the fixing seat 23 and the slide 22.

[0054] Preferably, the base 1 is densely covered with balls 15, and a groove body adapted for the balls 15 is opened on the base 1. A clamping plate 16 is embedded and fixed above the groove body. The balls 15 are movably connected in the groove body and the clamping plate 16, and the center of the balls 15 is located below the upper surface of the clamping plate 16.

[0055] In this embodiment, Figure 1 and 3 As shown, the annular casting 100 is placed on the base 1, and the inner hole of the annular casting 100 is sleeved on the outside of the fixed plate 12, and the bottom of the annular casting 100 is in contact with the ball 15, as shown in FIG. Figure 4 and 5 As shown, the knob on the top of the fixed screw 21 drives it to rotate. When the fixed screw 21 rotates, it drives the slide 22 to descend. The slide 22 pushes the fixed seat 23 away from the center of the fixed disk 12 through the rocker 28. The rubber seat 27 is squeezed with the inner hole of the annular casting 100, thereby fixing the annular casting 100.

[0056] like Figure 6 As shown, the dotted line in the figure represents the midpoint height of the ball 15, so that the ball 15 is stuck in the groove body.

[0057] When the device is working, the drill bit 14 is driven to rotate by the driving mechanism, and the lifting mechanism drives the drill bit 14 to perform vertical reciprocating motion. In the initial state, the drill bit 14 is at a low point, and the drill bit 14 performs a vertical reciprocating stroke and resets to complete the opening of a mounting hole. Then the transposition mechanism drives the annular casting 100 to rotate a fixed angle, and the drill bit 14 performs a reciprocating lifting stroke again. This cycle can realize the continuous opening of mounting holes. Example 2

[0058] The driving mechanism includes a driving box 31, a second outer cylinder 32 and a motor 33; a support plate 34 is fixedly connected between the support plates 11, a track groove 35 is opened on the support plate 34, a track rod 36 is fixedly connected in the track groove 35, a track seat 37 is fixedly connected to the bottom of the driving box 31, and the track seat 37 is slidably connected to the track rod 36. The right side of the driving box 31 is rotatably connected to an adjusting screw 38, and the adjusting screw 38 is engaged with the right side of the supporting plate 11. A cover box 39 is fixedly connected to the left side of the driving box 31, and a first outer cylinder 310 is rotatably connected in the cover box 39, and a first inner shaft 311 is slidably connected in the first outer cylinder 310. The inner wall of the first outer cylinder 310 and the first inner shaft 311 are connected. The outer walls of 11 are respectively provided with first protrusions 312 and first grooves 313 that adapt to each other, the drill bit 14 is fixedly connected to the top of the first inner shaft 311, the second outer cylinder 32 is rotatably connected between the left and right side plates of the driving box 31, the left end of the second outer cylinder 32 is linked with the first outer cylinder 310 through the first bevel gear pair 314, the second inner shaft 315 is slidably connected in the second outer cylinder 32, the inner wall of the second outer cylinder 32 and the outer wall of the second inner shaft 315 are respectively provided with second protrusions 316 and second grooves 317 that adapt to each other, the motor 33 is fixedly connected to the right side of the support plate 34, and the output shaft of the motor 33 is connected to the second inner shaft 315 through a coupling 318.

[0059] Preferably, a limit rod 319 is fixed in the through slot 13 , a limit seat 320 is slidably connected to the limit rod 319 , the first inner shaft 311 is slidably connected in the limit seat 320 , and a sliding rod 321 is fixed between the limit seat 320 and the cover box 39 .

[0060] In this embodiment, the technical features of the driving mechanism are disclosed, such as Figure 3 and Fig.11 As shown, when the adjusting screw 38 rotates, it can drive the driving box 31 and the cover box 39 to move horizontally. The cover box 39 drives the limit seat 320 to move through the sliding rod 321. The first inner shaft 311 and the drill bit 14 move synchronously. The position of the drill bit 14 can be adjusted to adjust the distance between the opening of the mounting hole and the center of the annular casting 100.

[0061] like Figure 3 and 8 As shown, after the driving box 31 moves laterally, the second outer cylinder 32 moves synchronously, but under the action of the second protrusion 316 and the second groove 317, the second outer cylinder 32 always rotates synchronously with the second inner shaft 315. When the motor 33 is working, it drives the second inner shaft 315 to rotate, and the second inner shaft 315 drives the second outer cylinder 32 to rotate. The second outer cylinder 32 drives the first outer cylinder 310 to rotate through the first bevel gear pair 314. Under the action of the first protrusion 312 and the first groove 313, the first inner shaft 311 rotates synchronously, thereby driving the drill bit 14 to rotate.

[0062] The lifting mechanism drives the drill bit 14 to move vertically. During this process, due to the action of the first protrusion 312 and the first groove 313, the first inner shaft 311 and the drill bit 14 always rotate with the first outer cylinder 310, so that the drill bit 14 moves vertically back and forth once to complete the opening of a mounting hole. Example 3

[0063] The lifting mechanism includes a lifting seat 41 and a first worm gear 42; the front and rear sides of the lifting seat 41 are slidably connected to the slide bar 321 through a slider 43, the first inner shaft 311 is rotatably connected to the lifting seat 41, the front side of the cover box 39 is rotatably connected to the first pulley 44, the first pulley 44 is eccentrically hinged with a swing arm 45, the other end of the swing arm 45 is hinged to the slider 43 on the front side, the front and rear side plates of the drive box 31 are rotatably connected with a shaft rod 46, the first worm gear 42 is fixed to the shaft rod 46, and the outside of the second outer cylinder 32 is fixedly connected to the first pulley 44. A worm 47, the first worm 47 is meshed with the first worm wheel 42, a half gear 48 is fixedly connected to the shaft 46 on the rear side of the first worm wheel 42, the left side of the shaft 46 is rotatably connected to the first rotating shaft 49, a first full gear 410 is fixedly connected to the first rotating shaft 49, a second pulley 411 is fixedly connected to the front end of the first rotating shaft 49, the second pulley 411 and the first pulley 44 are linked by a belt 412, the number of teeth of the half gear 48 is consistent with the number of teeth of the first full gear 410, and the diameters of the first pulley 44 and the second pulley 411 are equal.

[0064] In this embodiment, the technical features of the lifting mechanism are disclosed, such as Figure 3 and 12 As shown, the first worm 47 rotates with the second outer cylinder 32, and the first worm wheel 42 meshing with the first worm 47 rotates, so that the shaft 46 and the half gear 48 rotate, and the half gear 48 drives the first full gear 410 to rotate when meshing with it, so that the first rotating shaft 49 and the second pulley 411 rotate, as shown in FIG. Fig.11 As shown, the second pulley 411 drives the first pulley 44 to rotate through the belt 412, and the first pulley 44 drives the lifting seat 41 to move through the swing arm 45, thereby driving the first inner shaft 311 and the drill bit 14 to move.

[0065] Since the number of teeth of the half gear 48 is consistent with that of the first full gear 410, and the diameters of the first pulley 44 and the second pulley 411 are equal, during the meshing process of the half gear 48 and the first full gear 410, the first pulley 44 rotates one circle, so that the drill bit 14 completes a reciprocating lifting stroke.

[0066] The transmission of the first worm 47 and the first worm wheel 42 is a deceleration motion, thereby ensuring the rotation speed of the drill bit 14 on the one hand, and reducing the vertical movement speed of the drill bit 14 on the other hand, so that the drilling work can be completed smoothly. Example 4

[0067] The transposition mechanism includes a third inner shaft 51 and a transmission box 52; a cavity 53 is provided on the base 1, the cavity 53 is sealed by a cover plate 54, a transposition shaft 55 is rotatably connected to the cover plate 54, a fixed disk 12 is fixedly connected to the top of the transposition shaft 55, a second worm gear 56 is detachably connected to the bottom of the transposition shaft 55, a sliding cavity 57 is provided at the right rear of the cavity 53, two ends of the third inner shaft 51 are rotatably connected to the left side wall of the cavity 53 and the right side wall of the sliding cavity 57, a second worm 58 meshing with the second worm gear 56 is fixedly connected to the third inner shaft 51, the transmission box 52 is slidably connected in the sliding cavity 57, a third outer cylinder 59 is rotatably connected in the transmission box 52, and the third inner shaft 51 slides The third outer cylinder 59 is rotatably connected to the third inner shaft 51, and the inner wall of the third outer cylinder 59 and the outer wall of the third inner shaft 51 are respectively provided with a third protrusion 510 and a third groove 511 which are adapted to each other. A connecting rod 512 is fixedly connected between the transmission box 52 and the drive box 31. A second rotating shaft 513 is rotatably connected in the drive box 31 on the right side of the shaft 46, and a second full gear 514 is fixedly connected to the second rotating shaft 513. A third rotating shaft 515 is rotatably connected between the top plate of the drive box 31 and the bottom plate of the transmission box 52. The bottom of the third rotating shaft 515 is linked to the second rotating shaft 513 through a second bevel gear pair 516, and the top of the third rotating shaft 515 is linked to the third outer cylinder 59 through a third bevel gear pair 517.

[0068] In this embodiment, the technical features of the transposition mechanism are disclosed, such as Figure 3 , Fig.11 ,as well as Fig.13 As shown, when the lateral position of the drive box 31 and the drill bit 14 is adjusted by adjusting the screw 38, the drive box 31 drives the transmission box 52 to move through the connecting rod 512. After the transmission box 52 moves, under the action of the third protrusion 510 and the third groove 511, the third inner shaft 51 always rotates synchronously with the third outer cylinder 59.

[0069] like Fig.12 As shown, when the half gear 48 is meshed with the second full gear 514, it drives the second full gear 514 to rotate, so that the second rotating shaft 513 rotates, and the second rotating shaft 513 drives the third rotating shaft 515 to rotate through the second bevel gear pair 516, as shown in FIG. Fig.13 As shown, the third rotating shaft 515 drives the third outer cylinder 59 and the third inner shaft 51 to rotate through the third bevel gear pair 517, as shown in FIG. Figure 3-4 as well as Fig.11 As shown, the second worm 58 rotates with the third inner shaft 51, and the second worm wheel 56 meshing with the second worm 58 rotates, thereby rotating the transposition shaft 55 and the fixed plate 12, and the fixed plate 12 drives the annular casting 100 to rotate a fixed angle.

[0070] like Fig.14As shown, the half gear 48 is alternately meshed with the first full gear 410 and the second full gear 514, and the half gear 48 will mesh with the first full gear 410 only after it is completely disengaged from the second full gear 514, that is, the vertical movement of the drill bit 14 and the rotation of the annular casting 100 are performed alternately, and the drilling process and the transposition process will not interfere with each other. Example 5

[0071] Ear plates 61 are fixedly connected to the front and rear sides of the cover plate 54, avoidance grooves 62 are opened on the front and rear sides of the cavity 53, the ear plates 61 are fixed in the avoidance grooves 62 by bolts 63, a center column 64 is fixedly connected to the bottom of the transposition shaft 55, a locking screw 65 is fixedly connected to the bottom of the center column 64, a positioning rod 66 is evenly fixedly connected to the bottom of the transposition shaft 55 around the circumference of the center column 64, the second worm gear 56 is plugged into the center column 64 and the positioning rod 66, a locking disk 67 is meshed on the locking screw 65, and a plurality of second worm gears 56 are provided, and different second worm gears 56 have different numbers of teeth.

[0072] Preferably, the second full gear 514 has the same number of teeth as the half gear 48 , the transmission ratios of the two sub-bevel gears in the second bevel gear pair 516 and the third bevel gear pair 517 are both 1:1, and the number of starts of the second worm 58 is 1.

[0073] In this embodiment, since the second full gear 514 and the half gear 48 have the same number of teeth, the half gear 48 drives the second full gear 514 to rotate one circle when it is meshed with the second full gear 514; since the transmission ratios of the two sub-bevel gears in the second bevel gear pair 516 and the third bevel gear pair 517 are both 1:1, when the second full gear 514 rotates one circle, the second worm 58 rotates one circle; since the number of heads of the second worm 58 is 1, there are multiple second worm wheels 56, and the number of teeth of the second worm wheel 56 used is Z, when the second worm 58 rotates one circle, the second worm wheel 56 rotates (1 / Z) circle, that is, the annular casting 100 rotates (1 / Z) circle, the angle between two adjacent mounting holes is (360 / Z)°, and the number of mounting holes opened on the annular casting 100 is Z. By replacing different second worm wheels 56, the number of mounting holes opened on the annular casting 100 can be adjusted.

[0074] like Figure 4 ,as well as Figure 9-10 As shown, when installing the second worm gear 56, select the second worm gear 56 with a suitable number of teeth, plug it into the center column 64 and the positioning rod 66, then connect the locking plate 67 with the locking screw 65, turn the locking plate 67 so that the second worm gear 56 is clamped and fixed between the transposition shaft 55 and the locking plate 67, then insert the second worm gear 56 downward into the cavity 53 and mesh with the second worm 58, the ear plate 61 enters the avoidance groove 62, and fixes the ear plate 61 with the bolt 63, so that the second worm gear 56 can be installed.

[0075] The working principle of the present invention is:

[0076] The second worm gear 56 is replaced with a suitable one according to the number of mounting holes to be opened on the annular casting 100 (i.e., the number of teeth of the second worm gear 56 is consistent with the number of mounting holes to be opened on the annular casting 100), and the lateral position of the drill bit 14 is adjusted by rotating the adjusting screw 38 to adjust the distance between the mounting holes to be opened and the center of the annular casting 100.

[0077] In the initial state, the drill bit 14 is located at the low point, and the teeth of the half gear 48 begin to mesh with the first full gear 410, and then the annular casting 100 is sleeved on the fixing plate 12 and aligned and fixed by the fixing mechanism 2.

[0078] Then start the motor 33, the motor 33 drives the second inner shaft 315 and the second outer cylinder 32 to rotate, under the action of the first bevel gear pair 314, the first outer cylinder 310 and the second inner shaft 315 rotate, and then drive the drill bit 14 to rotate, the half gear 48 rotates clockwise, and drives the first full gear 410 to rotate one circle. In this process, the drill bit 14 first rises and then falls to reset, completing the opening of a mounting hole. In this application, the second worm 58 and the second worm wheel 56 are self-locking, that is, the second worm 58 can drive the second worm wheel 56 to rotate, while the second worm wheel 56 cannot drive the second worm 58 to rotate. When the mounting hole is opened, the fixed plate 12 and the annular casting 100 can be locked to avoid deviation in the drilling position.

[0079] After the half gear 48 is disengaged from the first full gear 410, it is meshed with the second full gear 514. At this time, the vertical height of the drill bit 14 remains unchanged. When the second full gear 514 rotates, it drives the second rotating shaft 513 to rotate. Under the action of the second bevel gear pair 516 and the third bevel gear pair 517, the third outer cylinder 59, the third inner shaft 51 and the second worm 58 rotate, and the second worm wheel 56 meshed with the second worm 58 rotates, and then the annular casting 100 rotates a fixed angle, so that the next processing position is aligned with the drill bit 14, and then the half gear 48 is meshed with the first full gear 410 to open the installation hole. This cycle can realize the continuous opening of the installation hole.

[0080] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to only specific implementation methods. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A mechanical casting positioning drilling device, comprising an annular casting (100), characterized in that: Also includes: A base (1), wherein a support plate (11) is fixedly connected to the lower surface of the base (1) in a left-right symmetrical manner, a fixing plate (12) is rotatably connected to the base (1), a through slot (13) is provided on the left side of the base (1), and a drill bit (14) is provided in the through slot (13); A fixing mechanism (2), wherein the fixing mechanism (2) is arranged on a fixing plate (12), and the annular casting (100) is sleeved on the outside of the fixing plate (12) and fixed by the fixing mechanism (2); A driving mechanism, the driving mechanism comprising a driving box (31), a second outer cylinder (32) and a motor (33); a support plate (34) is fixedly connected between the support plates (11); a track groove (35) is formed on the support plate (34); a track rod (36) is fixedly connected in the track groove (35); a track seat (37) is fixedly connected to the bottom of the driving box (31); the track seat (37) is slidably connected to the track rod (36); an adjusting screw (38) is rotatably connected to the right side of the driving box (31); the adjusting screw (38) is meshed with the right side of the supporting plate (11); a cover box (39) is fixedly connected to the left side of the driving box (31); a first outer cylinder (310) is rotatably connected in the cover box (39); a first inner shaft (311) is slidably connected in the first outer cylinder (310); The inner wall and the outer wall of the first inner shaft (311) are respectively provided with first protrusions (312) and first grooves (313) that match each other; the drill bit (14) is fixedly connected to the top of the first inner shaft (311); the second outer cylinder (32) is rotatably connected between the left and right side plates of the drive box (31); the left end of the second outer cylinder (32) is linked with the first outer cylinder (310) via a first bevel gear pair (314); the second inner shaft (315) is slidably connected in the second outer cylinder (32); the inner wall of the second outer cylinder (32) and the outer wall of the second inner shaft (315) are respectively provided with second protrusions (316) and second grooves (317) that match each other; the motor (33) is fixedly connected to the right side of the support plate (34); and the output shaft of the motor (33) is butt-jointed with the second inner shaft (315) via a coupling (318); A lifting mechanism, the lifting mechanism being used to drive the drill bit (14) to move back and forth vertically; A transposition mechanism, wherein the transposition mechanism is used to drive the fixed disk (12) to rotate a fixed angle, and the transposition mechanism and the lifting mechanism work alternately.

2. A mechanical casting positioning drilling device according to claim 1, characterized in that: The fixing mechanism (2) comprises a fixing screw (21), a sliding seat (22) and a fixing seat (23); a seat plate (25) is fixedly connected to the fixing plate (12) via a support rod (24); the fixing screw (21) is rotatably connected between the seat plate (25) and the fixing plate (12); the sliding seat (22) is meshed with the fixing screw (21) and is slidably connected to the support rod (24); movable grooves (26) are uniformly provided on the circumference of the fixing plate (12); the fixing seat (23) is slidably connected in the movable grooves (26); a rubber seat (27) is fixedly connected to one end of the fixing seat (23) away from the center of the fixing plate (12); and a swing rod (28) is hingedly connected between the fixing seat (23) and the sliding seat (22).

3. A mechanical casting positioning drilling device according to claim 1, characterized in that: The base (1) is densely covered with balls (15), the base (1) is provided with a groove body adapted to the balls (15), a clamping plate (16) is embedded and fixedly connected above the groove body, the balls (15) are movably connected in the groove body and the clamping plate (16), and the center of the balls (15) is located below the upper surface of the clamping plate (16).

4. A mechanical casting positioning drilling device according to claim 1, characterized in that: A limit rod (319) is fixedly connected in the through slot (13), a limit seat (320) is slidably connected to the limit rod (319), the first inner shaft (311) is slidably connected in the limit seat (320), and a sliding rod (321) is fixedly connected between the limit seat (320) and the cover box (39).

5. A mechanical casting positioning drilling device according to claim 4, characterized in that: The lifting mechanism comprises a lifting seat (41) and a first worm gear (42); the front and rear sides of the lifting seat (41) are slidably connected to the slide bar (321) via a slider (43); the first inner shaft (311) is rotatably connected to the lifting seat (41); the front side of the cover box (39) is rotatably connected to a first pulley (44); a swing arm (45) is eccentrically hinged on the first pulley (44); the other end of the swing arm (45) is hinged to the slider (43) on the front side; a shaft rod (46) is rotatably connected between the front and rear side plates of the drive box (31); the first worm gear (42) is fixedly connected to the shaft rod (46); the outside of the second outer cylinder (32) is fixedly connected to the shaft rod (46); A first worm (47) is provided, the first worm (47) meshing with the first worm wheel (42), a half gear (48) is fixedly connected to the shaft (46) at the rear side of the first worm wheel (42), the left side of the shaft (46) is rotatably connected to the first rotating shaft (49), a first full gear (410) is fixedly connected to the first rotating shaft (49), a second pulley (411) is fixedly connected to the front end of the first rotating shaft (49), the second pulley (411) and the first pulley (44) are linked via a belt (412), the number of teeth of the half gear (48) is consistent with the number of teeth of the first full gear (410), and the diameters of the first pulley (44) and the second pulley (411) are equal.

6. A mechanical casting positioning drilling device according to claim 5, characterized in that: The transposition mechanism comprises a third inner shaft (51) and a transmission box (52); a cavity (53) is provided on the base (1); the cavity (53) is sealed by a cover plate (54); a transposition shaft (55) is rotatably connected to the cover plate (54); the fixed plate (12) is fixedly connected to the top of the transposition shaft (55); a second worm gear (56) is detachably connected to the bottom of the transposition shaft (55); a sliding cavity (57) is provided at the right rear of the cavity (53); two ends of the third inner shaft (51) are rotatably connected to the left side wall of the cavity (53) and the right side wall of the sliding cavity (57); a second worm (58) meshing with the second worm gear (56) is fixedly connected to the third inner shaft (51); the transmission box (52) is slidably connected to the sliding cavity (57); a third outer cylinder (59) is rotatably connected to the transmission box (52); The third inner shaft (51) is slidably connected in the third outer cylinder (59); the inner wall of the third outer cylinder (59) and the outer wall of the third inner shaft (51) are respectively provided with third protrusions (510) and third grooves (511) that match each other; a connecting rod (512) is fixedly connected between the transmission box (52) and the drive box (31); a second rotating shaft (513) is rotatably connected in the drive box (31) on the right side of the shaft rod (46); a second full gear (514) is fixedly connected to the second rotating shaft (513); a third rotating shaft (515) is rotatably connected between the top plate of the drive box (31) and the bottom plate of the transmission box (52); the bottom of the third rotating shaft (515) is linked to the second rotating shaft (513) via a second bevel gear pair (516); and the top of the third rotating shaft (515) is linked to the third outer cylinder (59) via a third bevel gear pair (517).

7. A mechanical casting positioning drilling device according to claim 6, characterized in that: The cover plate (54) is fixedly connected with ear plates (61) on the front and rear sides, and the cavity (53) is provided with avoidance grooves (62) on the front and rear sides. The ear plates (61) are fixed in the avoidance grooves (62) by bolts (63). The bottom of the transposition shaft (55) is fixedly connected with a center column (64), and the bottom of the center column (64) is fixedly connected with a locking screw (65). The bottom of the transposition shaft (55) is evenly fixed with a positioning rod (66) around the circumference of the center column (64). The second worm gear (56) is plugged with the center column (64) and the positioning rod (66), and a locking disk (67) is meshed on the locking screw (65). A plurality of second worm gears (56) are provided, and different second worm gears (56) have different numbers of teeth.

8. A mechanical casting positioning drilling device according to claim 7, characterized in that: The second full gear (514) and the half gear (48) have the same number of teeth, the transmission ratios of the two sub-bevel gears in the second bevel gear pair (516) and the third bevel gear pair (517) are both 1:1, and the number of starts of the second worm (58) is 1.

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