CN211539545U

CN211539545U - Automatic ear hole drilling machine

Info

Publication number: CN211539545U
Application number: CN201922177429.9U
Authority: CN
Inventors: 邝启康; 毛平; 张民智
Original assignee: Shenzhen Qianhai Heying Technology Co ltd
Current assignee: Shenzhen Qianhai Heying Technology Co ltd
Priority date: 2019-12-05
Filing date: 2019-12-05
Publication date: 2020-09-22
Anticipated expiration: 2029-12-05

Abstract

The utility model discloses an automatic ear hole drilling machine, which comprises a frame, an ear hole drilling mechanism and a three-coordinate positioning mechanism, wherein the ear hole drilling mechanism and the three-coordinate positioning mechanism are arranged on the frame side by side; the three-coordinate positioning mechanism comprises a rotating assembly, a tensioning assembly, an X-axis motion assembly with horizontal linear motion guide, an angle adjusting assembly swinging in the horizontal direction to an angle, and a Z-axis motion assembly with vertical motion guide. Utilize three-coordinate positioning mechanism to make the angle of drilling of outside work piece adjustment, conveniently bore ear hole mechanism and carry out drilling to one side table ear of outside work piece, treat that one side ear hole bores the back well, it is rotatory with outside work piece to utilize rotating assembly, adjust suitable position, the angle, carry out the other side and bore the ear hole, this automatic bore ear hole machine is applicable to the drilling to the table ear of watchcase, the position to the work piece of having solved current device, the problem that angle modulation has the difficulty, and can also reduce the processing degree of difficulty.

Description

Automatic ear hole drilling machine

Technical Field

The utility model belongs to watchcase processing field, in particular to ear hole drilling machine that punches is carried out to the table ear of watchcase.

Background

A wristwatch is an instrument worn on the wrist for timing/displaying time. Generally, the watch is composed of a watch head and a watch strap (watch buckle). The parts of the watch head comprise a movement, a watch case, a watch ring and the like. And in the watchcase course of working, can punch the gauge outfit in four corners of watchcase, make things convenient for the processing in later stage. When the drilling processing of watchcases and the like is carried out, deep drilling processing is needed, the problems of high processing difficulty, poor processability, low processing precision and the like generally exist due to the material of the watchcases and the integral structure of the watchcases, and meanwhile, in the processing process, more heat is always continuously generated and cannot be quickly dissipated, so that a cutter is in a high-heat state for a long time, the cutter is greatly abraded, and a workpiece is easily burnt out due to overhigh temperature of the cutter; in addition, before the lug is drilled, the angle and the position of the workpiece need to be adjusted to fix the workpiece at a specified drilling position, so that drilling is facilitated, and the position adjustment of the workpiece by the conventional device is difficult.

Disclosure of Invention

In order to solve the above problem, an object of the present invention is to provide an automatic ear hole drilling machine, which is suitable for drilling the ear of a watch case, and solves the problem that the existing device has difficulty in adjusting the position and the angle of a workpiece (specifically, the ear of the watch case), and can also reduce the processing difficulty.

Another object of the present invention is to provide an automatic ear hole drilling machine, which can improve the precision of the external workpiece performing linear motion in the horizontal position, and also can improve the precision of the external workpiece performing linear motion in the vertical position, and is convenient to adjust, reduces the difficulty of adjusting the angle of the external workpiece, and can adapt to watchcases with different sizes; in addition, in the ear hole drilling mechanism, the front, back, left and right positions of the drill bit can be adjusted, the positioning accuracy of the drill bit is improved, and the oil supply mechanism is arranged to supply oil to the cutter on the drill bit, so that the temperature on the cutter can be reduced, the abrasion of the cutter can be reduced, the workpiece can be prevented from being burnt, and the processing yield is improved; by arranging the oil return mechanism, the oil dropped from the cutter is recovered and reused; in the ear hole drilling mechanism, the cutter can be supported and protected, so that the cutter is adaptive to drilling positions of different watchcases.

In order to achieve the above purpose, the technical scheme of the utility model is as follows:

an automatic ear hole drilling machine comprises a rack, an ear hole drilling mechanism and a three-coordinate positioning mechanism, wherein the ear hole drilling mechanism and the three-coordinate positioning mechanism are arranged on the rack side by side; the three-coordinate positioning mechanism comprises a rotating assembly, a tensioning assembly, an X-axis motion assembly with horizontal linear motion guide, an angle adjusting assembly swinging in the horizontal direction, and a Z-axis motion assembly with vertical motion guide; the X-axis motion assembly is fixedly arranged on the rack, the Z-axis motion assembly is arranged on the X-axis motion assembly, and the X-axis motion assembly drives the lower horizontal straight line to move; the angle adjusting assembly is arranged on the Z-axis moving assembly and moves along with the Z-axis moving assembly; the tensioning assembly is arranged at the swinging end of the angle adjusting assembly and is driven by the angle adjusting assembly to swing by an angle; the rotating assembly is installed below the tensioning assembly, the output end of the rotating assembly is fixed with the tensioning assembly, the tensioning assembly is driven to rotate, and the external workpiece is fixed to the top of the tensioning assembly.

After an external workpiece is fixed on the tensioning assembly, the X-axis movement assembly and the Z-axis movement assembly respectively adjust the horizontal position and the vertical position of the external workpiece, the angle adjusting assembly adjusts the angle of the external workpiece to enable the external workpiece to reach a target position, then the ear hole drilling mechanism drills ear holes in the external workpiece, after one side of ear holes is completed, the rotating assembly rotates to enable the external workpiece to rotate 180 degrees, and the ear hole drilling mechanism drills the other side of ear holes in the external workpiece.

The utility model discloses in, utilize X axle motion subassembly and Z axle motion subassembly among the three-coordinate positioning mechanism to remove outside work piece (like the watchcase) respectively behind the target location, utilize angle adjusting part to adjust the angle of outside work piece, make the angle of drilling of outside work piece adjustment, conveniently bore ear hole mechanism and carry out drilling to one side table ear of outside work piece, treat one side table ear and bore the back well, it is rotatory with outside work piece to utilize rotating assembly, adjust suitable position, the angle, carry out the drilling of another side, this automatic drilling ear hole machine is applicable to the drilling to the table ear of watchcase, the position to the work piece (specifically the table ear of watchcase) of current device has been solved, there is the problem of difficulty in angle modulation, and can also reduce the processing degree of difficulty.

The X-axis motion assembly comprises an X-axis bottom plate, an X-axis sliding rail, an X-axis sliding block, an L-shaped mounting seat, an X-axis rack, an X-axis gear, an X-axis rotating wheel, an X-axis rotating shaft and an X-axis transmission block; the X-axis bottom plate is fixedly arranged on the rack, the X-axis slide rail is fixedly arranged on the X-axis bottom plate, and the X-axis slide block is movably arranged on the X-axis slide rail; the L-shaped mounting seat is fixedly mounted on the X-axis sliding block, and the L-shaped mounting seat and the X-axis sliding block slide on the X-axis sliding rail together; the X-axis rack is fixedly arranged on the X-axis bottom plate and is parallel to the X-axis slide rail, and the X-axis rack is positioned on the outer side of the X-axis slide rail; the X-axis gear is fixedly arranged at the bottom of the X-axis rotating shaft and is meshed with the X-axis rack, the X-axis rotating wheel is fixedly arranged at the top of the X-axis rotating shaft, and the X-axis rotating shaft is rotated by rotating the X-axis rotating wheel to drive the X-axis gear to rotate; an X-axis bearing is fixedly sleeved on the X-axis rotating shaft, an X-axis transmission block is sleeved on the X-axis rotating shaft through the X-axis bearing, the X-axis transmission block is positioned above the X-axis gear, and the X-axis transmission block is fixed with one side of the L-shaped mounting seat; the Z-axis movement assembly is fixedly arranged on the L-shaped mounting seat.

The utility model discloses in, rotate X axle runner, drive the rotatory linear motion that makes X axle gear on X axle rack of X axle gear, drive X axle transmission piece linear motion, make L type mount pad and Z axle motion subassembly move on X axle slide rail, adopt the transmission structure of gear and rack, can promote outside work piece and carry out linear motion's precision on horizontal position, it is convenient to adjust.

The Z-axis motion assembly comprises a Z-axis slide rail, a Z-axis slide block, a Z-axis slide plate, a Z-axis cylinder, a Z-axis limiting wheel and a Z-axis guide rod; the Z-axis sliding rail is fixedly arranged on the side wall of the L-shaped mounting seat, the Z-axis sliding block is movably arranged on the Z-axis sliding rail, and the Z-axis sliding plate is fixedly arranged on the Z-axis sliding block; the Z-axis cylinder is arranged at the bottom of the Z-axis sliding plate and drives the Z-axis sliding plate to drive the Z-axis sliding block to move linearly up and down on the Z-axis sliding rail; a guide rod mounting block is fixedly mounted on one side of the Z-axis sliding plate, a Z-axis guide rod is fixedly mounted on the guide rod mounting block, and the Z-axis guide rod is parallel to the Z-axis sliding rail; the Z-axis limiting wheel is fixedly arranged at the top of the Z-axis guide rod and abuts against the top of the L-shaped mounting seat in the process of moving downwards along with the Z-axis sliding plate to limit the Z-axis sliding plate; a Z-axis guide block is fixedly arranged on the side surface of the L-shaped mounting seat, a guide rod through hole for allowing the Z-axis guide rod to penetrate is formed in the Z-axis guide block, and the Z-axis guide rod is movably sleeved in the guide rod through hole; the tensioning assembly is fixedly arranged on the Z-axis sliding plate and moves up and down along with the Z-axis sliding plate; the angle adjusting component is installed on the Z-axis sliding plate, and the swinging end of the angle adjusting component penetrates through the Z-axis sliding plate and then is connected with the tensioning component. The Z-axis guide rod has linear motion guide, the linear motion stability of the Z-axis sliding plate is improved, the structure and the driving transmission mode of the Z-axis motion assembly can improve the precision of the automatic ear hole drilling machine for adjusting the position of an external workpiece in the vertical direction, and the adjustment is convenient.

Specifically, the tensioning assembly comprises an installation base, a driving piece, a piston rod, a piston sleeve, a clamping piece and a protective shell; the rotating assembly comprises a rotating cylinder, the rotating cylinder is fixedly arranged at the bottom of the mounting base, and a driving end of the rotating cylinder penetrates through the bottom of the mounting base and is fixedly connected with the driving piece; the positive and negative rotation of an external workpiece is realized by utilizing a rotary cylinder; the piston rod is connected with the driving piece, the driving piece drives the piston rod to do telescopic motion along the axial direction, and the piston sleeve is fixedly sleeved on the piston rod; the top of the piston rod integrally extends out of a supporting block in a round table shape, and the outer wall of the piston sleeve is provided with at least 2 limiting convex strips; the clamping piece is provided with at least 2 limiting open holes, the far ends of the limiting open holes extend out of an integrated supporting head, and the thickness of the supporting head is gradually increased from one end facing the limiting open holes to the top end; the clamping piece is sleeved on the piston rod, the limiting convex strips penetrate through the limiting holes and are attached to the outer wall of the clamping piece, and the bottom end of the clamping piece is fixed on the driving piece; under the driving of the driving piece, the piston rod extends out to drive the limiting convex strip to move in the limiting opening, and the supporting head is radially expanded by the tensioning block; the protective shell is sleeved outside the clamping piece, the bottom of the protective shell is fixed with the driving piece, a protective shell opening is formed in the top of the protective shell, and the supporting head extends out of the protective shell opening; the top of the mounting base is provided with a mounting opening, a mounting bearing is arranged in the mounting opening, and the protective shell is mounted in the mounting opening through the mounting bearing; the outer side wall of the mounting base is fixedly connected with the swinging end of the angle adjusting component.

The movement range of the piston sleeve can be limited by arranging the limiting convex strips and the limiting open holes, the piston sleeve is limited to move only along the axial direction, the supporting head can be radially expanded, and the number of the limiting convex strips and the number of the limiting open holes are generally respectively 6; the driving piece is the cylinder, and the driving piece drive makes the piston rod outwards push, drives piston sleeve axial toward the outer motion, makes the top of holder support the head and radially struts and tightly props outside work piece to, outwards promote different distances with the piston sleeve through the piston rod, make and support the head and strut different sizes, with this outside work piece that comes the different specifications of adaptation, make and support the head and stabilize fixed outside work piece, make outside work piece be difficult for beating the commentaries on classics.

Specifically, a through opening is formed in the side wall of the L-shaped mounting seat, X-axis supporting blocks fixedly mounted on the L-shaped mounting seat are arranged on two sides of the through opening, and an accommodating space is formed between the L-shaped mounting seat and the X-axis supporting blocks; the X-axis support block supports the side wall of the L-shaped mounting seat.

The angle adjusting component comprises a rotating plate, a connecting rod, an adjusting wheel, a connecting rod supporting block, a connecting piece, a rotating piece, a first connecting shaft and a second connecting shaft; the Z-axis sliding plate is fixedly provided with adjusting limiting plates which are arranged in parallel, angle rotating holes and angle limiting holes are formed in the adjusting limiting plates, and the angle rotating holes are located above the angle limiting holes; the side edge of the top of the rotating plate is provided with a first rotating hole penetrating through two side walls of the rotating plate, a first angle rotating shaft is fixedly arranged in the first rotating hole, an anti-rotating bearing is fixedly arranged in the angle rotating hole, and two ends of the first angle rotating shaft extend out of the first rotating hole and are arranged in the angle rotating hole through the anti-rotating bearing; prevent changeing the setting of bearing, make the rotor plate follow first angle axis of rotation and rotate, and adjust the limiting plate and do not change, increase angle adjusting part's stable in structure performance.

The rotating plate is also provided with a second rotating hole positioned below the first rotating hole, the second rotating hole penetrates through two side walls of the rotating plate, a second angle rotating shaft is fixedly arranged in the second rotating hole, and the second angle rotating shaft is accommodated in the angle limiting hole and moves in the range of the angle limiting hole after extending out of the second rotating hole; the first angle rotating shaft and the second angle rotating shaft are parallel; the outer side wall of the mounting base is fixedly connected with the rotating plate and swings along with the rotating plate to adjust the angle of an external workpiece.

The bottom of the rotating plate is provided with a U-shaped accommodating opening, one end of the connecting piece is provided with an accommodating notch, one end of the rotating piece is arranged in the U-shaped accommodating opening through a first connecting shaft, and the other end of the rotating piece is arranged in the accommodating notch through a second connecting shaft; one end of the connecting rod is fixedly arranged in the connecting piece and is abutted against the rotating piece, a first accommodating hole for accommodating the connecting rod is formed in the Z-axis sliding plate, the connecting rod supporting block is fixedly arranged on the Z-axis sliding plate, a second accommodating hole for accommodating the connecting rod is formed in the connecting rod supporting block, and the other end of the connecting rod is fixedly connected with the adjusting wheel after sequentially penetrating through the first accommodating hole, the second accommodating hole and the accommodating space; the connecting rod supporting block is positioned in the through opening; the connecting rod supporting block is used for supporting the connecting rod, and the rotating plate, the connecting piece, the rotating piece and the connecting rod are simple in structure.

The adjusting wheel is driven to push or pull out the connecting rod, so that the rotating plate swings left and right by an angle, and the difficulty of angle adjustment of an external workpiece is reduced.

Specifically, three-coordinate positioning mechanism still includes spacing subassembly, and spacing subassembly includes spacing cylinder, spacing support, spacing post, and spacing support fixed mounting is at the top of installation base, and spacing cylinder fixed mounting is on spacing support, and spacing post fixed mounting is at the output of spacing cylinder, supports under the promotion of spacing cylinder to hold outside work piece spacing to increase the centre gripping stability of outside work piece on the tensioning subassembly.

This ear hole machine is still including fixed installing the response subassembly in adjusting the limiting plate both sides, and the response subassembly includes erection column, response cylinder, inductor, and erection column top fixed mounting has the response cylinder, and inductor fixed mounting is in the flexible end of response cylinder, and the inductor is used for responding to the position of outside work piece, conveniently adjusts outside work piece.

Specifically, the ear hole drilling mechanism comprises a position adjusting assembly for adjusting the front position and the rear position of the ear hole drilling assembly, a base arranged side by side with the three-coordinate positioning mechanism, and an ear hole drilling assembly for performing ear hole drilling operation, wherein the position adjusting assembly comprises a positioning cylinder, a cylinder mounting seat, a front and rear moving plate, a front and rear sliding block, and front and rear sliding rails located on two sides of the cylinder mounting seat.

Cylinder mount pad fixed mounting is on the side of base, counterpoint cylinder fixed mounting on the cylinder mount pad, and front and back slide rail is fixed to be installed on the base, and front and back slider movable mounting is on front and back slide rail, and front and back motion board fixed mounting is on front and back slider, and the lateral wall of front and back motion board and the output fixed connection of counterpoint cylinder, bores the ear hole subassembly and fixes to install on front and back motion board, under the drive of counterpoint cylinder, the straight line motion of front and back motion board horizontal, adjusts the position of boring the ear hole subassembly.

In the position control subassembly, through the drive of counterpointing the cylinder, make fore-and-aft movement board drive bore ear hole subassembly front and back linear motion, adjust the front and back position of boring ear hole subassembly, make and bore ear hole subassembly and can reach the purpose and bore the ear hole for outside work piece, set up the position control subassembly moreover and can promote the location accuracy to boring ear hole subassembly.

The ear hole drilling assembly comprises a left driving motor, a right driving motor, a left slide rail, a right slide rail, a left slide rail mounting seat, a right slide rail mounting seat and a left moving plate, wherein the left slide rail mounting seat and the right slide rail mounting seat are fixedly arranged on the front moving plate and the rear moving plate; the driving end of the left and right driving motor is fixedly connected with the left and right moving plate, and the left and right moving plate is driven by the left and right driving motor to perform horizontal linear motion.

The ear hole drilling assembly also comprises a rotary motor, a rotary motor mounting seat, a driving wheel, a driven wheel, a transmission belt, a drill bit and a cutter; the rotary motor mounting base is fixedly mounted on the left and right movement plate, the rotary motor is fixedly mounted in the rotary motor mounting base, the driving wheel is fixedly mounted at the driving end of the rotary motor, the drill bit is fixedly mounted on the left and right movement plate, the drill bit is parallel to the advancing direction of the left and right movement plate, the driven wheel is fixedly mounted at the bottom end of the drill bit, the driving wheel is connected with a transmission belt from a driving wheel, and the cutter is fixedly mounted at the top end of the drill bit.

The rotary motor drives the driving wheel to rotate, the driving wheel is driven by the transmission belt to rotate, and then the drill bit and the cutter are driven to rotate, so that the external workpiece reaching the target position is drilled with the ear hole.

The left and right driving motors drive the left and right motion plates to perform horizontal linear motion, drive components fixed on the left and right motion plates to perform horizontal motion, adjust left and right positions of the drill bit, and are matched with the position adjusting assembly for use, so that the drill bit can be adjusted in front and back and left and right positions, and the positioning accuracy of the drill bit is improved.

Specifically, the lug hole drilling mechanism further comprises an oil feeding assembly and an oil return assembly; the oil supply assembly comprises oil pipe mounting seats fixedly mounted on the rack, the oil pipe mounting seats are positioned on two sides of the base, oil pipes are fixedly mounted on the oil pipe mounting seats and connected with an external oil supply mechanism, and oil supply ends of the oil pipes are positioned above the drill bit and used for supplying oil to the cutter; the oil return assembly comprises an oil return port arranged on the rack, the surface of the oil return port is in a net shape, and the oil return port is positioned between the base and the three-coordinate positioning mechanism. In the process of drilling the lug hole, high temperature is generated, poor cutting is easily caused due to overhigh temperature, even a workpiece is burnt out, and the oil supply mechanism is arranged to supply oil to the cutter on the drill bit, so that the temperature on the cutter can be reduced, the abrasion of the cutter is reduced, the workpiece is prevented from being burnt out, and the processing yield is improved; by arranging the oil return mechanism, the oil dropped from the cutter is recovered and reused.

Specifically, bore ear hole mechanism still includes the guide holder of fixed mounting on the board of controlling the motion, and the guide holder is located the side of drill bit, and fixed mounting has the guide block on the guide holder, and movable mounting has the guide on the guide block, and the guide is parallel with the drill bit, and the top fixed mounting of guide has support piece, and support piece is located drill bit the place ahead to it has 2 at least supported holes to open on the support piece, and the cutter runs through the supported hole. When drilling ear holes, such as watch cases, four ears of the watch case need to have smaller ear hole diameters, so that the diameter of a used cutter is relatively small, the diameter of the cutter is usually only 1mm, the cutter is slender, and therefore a support part needs to be arranged for supporting the cutter; in order to adapt to various watchcases, the guide block and the guide piece are arranged, and the cutter is adapted to drilling positions of different watchcases by linearly adjusting the guide piece.

The utility model has the advantages that:

compared with the prior art, the utility model discloses an automatic ear hole drilling machine, it is applicable to and drills to the gauge outfit of watchcase, has solved current device and has had the problem of difficulty in position, angle modulation to the work piece (specifically the gauge outfit of watchcase) to can also reduce the processing degree of difficulty.

In the automatic ear hole drilling machine of the utility model, the precision of the external workpiece in the linear motion on the horizontal position can be improved, the precision of the external workpiece in the linear motion on the vertical position can also be improved, the adjustment is convenient, the difficulty of the angle adjustment of the external workpiece is reduced, and the automatic ear hole drilling machine can be adapted to watchcases with different sizes; in addition, in the ear hole drilling mechanism, the front, back, left and right positions of the drill bit can be adjusted, the positioning accuracy of the drill bit is improved, and the oil supply mechanism is arranged to supply oil to the cutter on the drill bit, so that the temperature on the cutter can be reduced, the abrasion of the cutter can be reduced, the workpiece can be prevented from being burnt, and the processing yield is improved; by arranging the oil return mechanism, the oil dropped from the cutter is recovered and reused; in the ear hole drilling mechanism, the cutter can be supported and protected, so that the cutter is adaptive to drilling positions of different watchcases.

Drawings

Fig. 1 is a schematic structural view of an automatic ear hole drilling machine implemented by the present invention.

Fig. 2 is an angle structure diagram of the ear hole drilling mechanism in the automatic ear hole drilling machine implemented by the present invention.

Fig. 3 is another angle structure diagram of the ear hole drilling mechanism of the automatic ear hole drilling machine implemented by the present invention.

Fig. 4 is an angle structure diagram of a three-coordinate positioning mechanism in an automatic ear hole drilling machine implemented by the present invention.

Fig. 5 is another angle structure diagram of the three-coordinate positioning mechanism in the automatic ear hole drilling machine implemented by the present invention.

Fig. 6 is a schematic view of a partial structure of a three-coordinate positioning mechanism in an automatic piercing machine according to the present invention.

Fig. 7 is a schematic structural diagram of an X-axis moving component in an automatic ear hole drilling machine implemented by the present invention.

Fig. 8 is another partial schematic structural view of a three-coordinate positioning mechanism in an automatic piercing machine according to the present invention.

Fig. 9 is a schematic view of a partial structure of an angle adjusting assembly in an automatic piercing machine according to the present invention.

Fig. 10 is a schematic view of a partial structure of a tension assembly in an automatic piercing machine according to the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

The technical scheme of the utility model as follows:

as shown in fig. 1-10, the automatic ear hole drilling machine implemented by the present invention includes a frame (not shown), an ear hole drilling mechanism 1 and a three-coordinate positioning mechanism 2, wherein the ear hole drilling mechanism 1 and the three-coordinate positioning mechanism 2 are arranged side by side on the frame; the three-coordinate positioning mechanism 2 comprises a rotating assembly 21, a tensioning assembly 22, an X-axis moving assembly 23 with a horizontal linear motion guide, an angle adjusting assembly 24 with a swinging angle in the horizontal direction, and a Z-axis moving assembly 25 with a vertical motion guide; the X-axis motion assembly 23 is fixedly arranged on the rack, the Z-axis motion assembly 25 is arranged on the X-axis motion assembly 23, and the X-axis motion assembly 23 drives the lower horizontal linear motion; the angle adjusting assembly 24 is arranged on the Z-axis moving assembly 25 and moves along with the Z-axis moving assembly 25; the tensioning assembly 22 is arranged at the swinging end of the angle adjusting assembly 24 and is driven by the angle adjusting assembly 24 to swing by an angle; the rotating assembly 21 is mounted below the tensioning assembly 22 and the output end is fixed with the tensioning assembly 22, driving the tensioning assembly 22 to rotate, the outer workpiece 0 is fixed on top of the tensioning assembly 22.

After the external workpiece 0 is fixed on the tensioning assembly 22, the horizontal and vertical positions of the external workpiece 0 are respectively adjusted by the X-axis movement assembly 23 and the Z-axis movement assembly 25, the angle of the external workpiece 0 is adjusted by the angle adjusting assembly 24, so that the external workpiece 0 reaches a target position, then the ear hole drilling mechanism 1 drills an ear hole on the external workpiece 0, after the ear hole on one side is completed, the rotation assembly 21 rotates, so that the external workpiece 0 rotates 180 degrees, and the ear hole drilling mechanism 1 drills an ear hole on the other side on the external workpiece 0.

The utility model discloses in, utilize X axle motion subassembly 23 and Z axle motion subassembly 25 among three-coordinate positioning mechanism 2 to remove outside work piece 0 (like the watchcase) respectively behind the purpose position, utilize angle adjusting part 24 to adjust the angle of outside work piece 0, make the angle of outside work piece 0 adjustment drilling, conveniently bore ear hole mechanism 1 and carry out drilling to one side table ear of outside work piece 0, treat one side table ear drilling well back, utilize rotating assembly 21 to rotate outside work piece 0, adjust suitable position, the angle, carry out the other side and bore the ear hole, this automatic ear hole machine is applicable to the drilling to the table ear of watchcase, the position to the work piece (specifically the table ear of watchcase) of current device has been solved, the problem that angle modulation has the difficulty, and can also reduce the processing degree of difficulty.

In the present embodiment, the X-axis moving assembly 23 includes an X-axis base plate 231, an X-axis slide rail 232, an X-axis slider 233, an L-shaped mounting seat 234, an X-axis rack 235, an X-axis gear 236, an X-axis pulley 237, an X-axis rotating shaft 238, and an X-axis transmission block 239; the X-axis bottom plate 231 is fixedly arranged on the rack, the X-axis slide rail 232 is fixedly arranged on the X-axis bottom plate 231, and the X-axis slide block 233 is movably arranged on the X-axis slide rail 232; the L-shaped mounting seat 234 is fixedly mounted on the X-axis slider 233, and the L-shaped mounting seat 234 and the X-axis slider 233 slide together on the X-axis slide rail 232; the X-axis rack 235 is fixedly arranged on the X-axis bottom plate 231 and is parallel to the X-axis slide rail 232, and the X-axis rack 235 is positioned on the outer side of the X-axis slide rail 232; the X-axis gear 236 is fixedly arranged at the bottom of the X-axis rotating shaft 238, the X-axis gear 236 is meshed with the X-axis rack 235, the X-axis rotating wheel 237 is fixedly arranged at the top of the X-axis rotating shaft 238, and the X-axis rotating shaft 238 is rotated by rotating the X-axis rotating wheel 237, so that the X-axis gear 236 is driven to rotate; an X-axis bearing 230 is fixedly sleeved on the X-axis rotating shaft 238, an X-axis transmission block 239 is sleeved on the X-axis rotating shaft 238 through the X-axis bearing 230, the X-axis transmission block 239 is positioned above the X-axis gear 236, and the X-axis transmission block 239 is fixed with one side of the L-shaped mounting seat 234; the Z-axis motion assembly 25 is fixedly mounted to the L-shaped mount 234.

The utility model discloses in, rotating X axle runner 237, driving X axle gear 236 rotation and making X axle gear 236 linear motion on X axle rack 235, drive X axle transmission block 239 linear motion, make L type mount pad 234 and Z axle motion subassembly 25 move on X axle slide rail 232, adopt the transmission structure of gear and rack, can promote outside work piece 0 and carry out linear motion's precision on horizontal position, it is convenient to adjust.

In the present embodiment, the Z-axis moving assembly 25 includes a Z-axis slide rail 251, a Z-axis slide block 252, a Z-axis slide plate 253, a Z-axis cylinder 254, a Z-axis limit wheel 255, and a Z-axis guide rod 256; the Z-axis slide rail 251 is fixedly arranged on the side wall of the L-shaped mounting seat 234, the Z-axis slide block 252 is movably arranged on the Z-axis slide rail 251, and the Z-axis slide plate 253 is fixedly arranged on the Z-axis slide block 252; the Z-axis cylinder 254 is installed at the bottom of the Z-axis sliding plate 253, and the Z-axis cylinder 254 drives the Z-axis sliding plate 253 to drive the Z-axis sliding block 252 to move linearly up and down on the Z-axis sliding rail 251; a guide bar mounting block 257 is fixedly mounted on one side of the Z-axis sliding plate 253, a Z-axis guide bar 256 is fixedly mounted on the guide bar mounting block 257, and the Z-axis guide bar 256 is parallel to the Z-axis sliding rail 251; the Z-axis limiting wheel 255 is fixedly arranged at the top of the Z-axis guide rod 256, and the Z-axis limiting wheel 255 abuts against the top of the L-shaped mounting seat 234 in the downward movement process along with the Z-axis sliding plate 253 to limit the Z-axis sliding plate 253; a Z-axis guide block 258 is fixedly mounted on the side surface of the L-shaped mounting seat 234, a guide rod through hole (not shown) for allowing the Z-axis guide rod 256 to penetrate is formed in the Z-axis guide block 258, and the Z-axis guide rod 256 is movably sleeved in the guide rod through hole; the tensioning assembly 22 is fixedly arranged on the Z-axis sliding plate 253 and moves up and down along with the Z-axis sliding plate 253; the angle adjusting assembly 24 is installed on the Z-axis sliding plate 253, and the swinging end of the angle adjusting assembly 24 penetrates through the Z-axis sliding plate 253 and then is connected with the tensioning assembly 22.

The Z-axis guide rod 256 has linear motion guide, so that the linear motion stability of the Z-axis sliding plate 253 is improved, and the structure and the driving transmission mode of the Z-axis motion assembly 25 can improve the precision of the automatic ear hole drilling machine in position adjustment on the vertical direction of an external workpiece 0, and the adjustment is convenient.

In this embodiment, the tensioning assembly 22 includes a mounting base 221, a drive 222, a piston rod 223, a piston sleeve 224, a clamp 225, and a shield 226; the rotating assembly 21 comprises a rotating cylinder 211, the rotating cylinder 211 is fixedly installed at the bottom of the installation base 221, and the driving end of the rotating cylinder 211 penetrates through the bottom of the installation base 221 and is fixedly connected with a driving piece 222; the positive and negative rotation of the external workpiece 0 is realized by using the rotary cylinder 211; the piston rod 233 is connected with the driver 222, the driver 222 drives the piston rod 223 to perform telescopic motion along the axial direction, and the piston sleeve fixing 224 is fixedly sleeved on the piston rod 223; a round-table-shaped supporting block 227 extends out of the top of the piston rod 223 in an integrated manner, and at least 2 limiting convex strips 228 are arranged on the outer wall of the piston sleeve 224; the clamping piece 225 is provided with at least 2 limiting holes 229, the far ends of the limiting holes 229 extend out of the integrated supporting head 220, and the thickness of the supporting head 220 is gradually increased from one end facing the limiting holes 229 to the top end; the clamping member 225 is sleeved on the piston rod 223, the limit convex strip 228 penetrates through the limit opening 229 and is attached to the outer wall of the clamping member 225, and the bottom end of the clamping member 225 is fixed on the driving member 222; under the driving of the driving member 222, the piston rod 223 extends out to drive the limit protruding strip 228 to move in the limit opening 229, and the support head 220 is radially expanded by the expansion block 227; the protective shell 226 is sleeved outside the clamping piece 225, the bottom of the protective shell 226 is fixed with the driving piece 222, a protective shell opening 2261 is formed in the top of the protective shell 226, and the supporting head 220 extends out of the protective shell opening 2261; the top of the mounting base 221 is provided with a mounting opening (not shown), a mounting bearing 2211 is arranged in the mounting opening, and the protective shell 226 is mounted in the mounting opening through the mounting bearing 2211; the outer side wall of the mounting base 221 is fixedly connected with the swing end of the angle adjusting assembly 24.

The movement range of the piston sleeve 224 can be limited by the arrangement of the limit protruding strips 228 and the limit openings 229, the piston sleeve 224 can be limited to move only in the axial direction, the support head 220 can be expanded only in the radial direction, and generally, 6 limit protruding strips 228 and limit openings 229 are respectively arranged; the driving member 222 is a cylinder, and the driving member 222 drives the piston rod 223 to push outwards to drive the piston sleeve 224 to move axially outwards, so that the top supporting head 220 of the clamping member 225 radially expands to tightly support the external workpiece 0, and the piston rod 223 pushes the piston sleeve 224 outwards for different distances to expand the supporting head 220 for different sizes, so as to adapt to the external workpieces 0 of different specifications, so that the supporting head 220 stably fixes the external workpiece 0, and the external workpiece 0 is not easy to rotate.

In the present embodiment, a through opening 2341 is formed on a side wall of the L-shaped mounting base 234, X-axis supporting blocks 2342 fixedly mounted on the L-shaped mounting base 234 are disposed on two sides of the through opening 2341, and an accommodating space 2343 is formed between the L-shaped mounting base 234 and the X-axis supporting blocks 2342; the X-axis support block 2342 supports the side wall of the L-shaped mount 234.

The angle adjusting assembly 24 includes a rotating plate 241, a connecting rod 242, an adjusting wheel 243, a connecting rod supporting block 244, a connecting member 245, a rotating member 246, a first connecting shaft 247, and a second connecting shaft 248; an adjusting limit plate 2531 which is arranged in parallel is fixedly arranged on the Z-axis sliding plate 253, an angle rotation hole 2532 and an angle limit hole 2533 are formed in the adjusting limit plate 2532, and the angle rotation hole 2532 is positioned above the angle limit hole 2533; a first rotating hole 2411 penetrating through two side walls of the rotating plate 241 is formed in the side edge of the top of the rotating plate 241, a first angle rotating shaft 2412 is fixedly installed in the first rotating hole 2411, an anti-rotating bearing (not shown) is fixedly installed in the angle rotating hole 2532, and two ends of the first angle rotating shaft 2412 extend out of the first rotating hole 2411 and then are installed in the angle rotating hole 2532 through the anti-rotating bearing; the rotation-proof bearing is arranged, so that the rotating plate 241 rotates along with the first angle rotating shaft 2412, the limiting plate 2531 is adjusted to be not rotated, and the structural stability of the angle adjusting assembly 24 is improved.

A second rotating hole 2413 positioned below the first rotating hole 2411 is further formed in the rotating plate 241, the second rotating hole 2413 penetrates through two side walls of the rotating plate 241, a second angle rotating shaft (not shown) is fixedly installed in the second rotating hole 2413, and the second angle rotating shaft extends out of the second rotating hole 2413, is accommodated in the angle limiting hole 2533 and moves within the range of the angle limiting hole 2533; the first angular rotational axis 2412 and the second angular rotational axis are parallel; the outer sidewall of the mounting base 221 is fixedly connected to the rotating plate 241, and swings with the rotating plate 241 to adjust the angle of the external workpiece 0.

A U-shaped accommodating opening 2414 is formed at the bottom of the rotating plate 241, an accommodating gap 2451 is formed at one end of the connecting piece 245, one end of the rotating piece 246 is installed in the U-shaped accommodating opening 2414 through the first connecting shaft 247, and the other end of the rotating piece 246 is installed in the accommodating gap 2451 through the second connecting shaft 248; one end of the connecting rod 242 is fixedly installed in the connecting member 245 and abuts against the rotating member 246, a first accommodating hole (not shown) for accommodating the connecting rod 242 is formed in the Z-axis sliding plate 253, the connecting rod supporting block 244 is fixedly installed on the Z-axis sliding plate 253, a second accommodating hole (not shown) for accommodating the connecting rod 242 is formed in the connecting rod supporting block 244, and the other end of the connecting rod 242 sequentially passes through the first accommodating hole, the second accommodating hole and the accommodating space 2343 and then is fixedly connected with the adjusting wheel 243; the connecting rod support block 244 is located within the through opening 2341; the connecting rod supporting block 244 serves to support the connecting rod 242, and the rotating plate 241, the connecting member 245, the rotating member 246, and the connecting rod 242 have a simple structure.

The adjustment wheel 243 is driven to push or pull the connecting rod 242, so that the rotating plate 241 swings left and right by an angle, thereby reducing the difficulty of adjusting the angle of the external workpiece 0.

In this embodiment, the three-coordinate positioning mechanism 2 further includes a limiting component 26, the limiting component 26 includes a limiting cylinder 261, a limiting bracket 262, and a limiting column 263, the limiting bracket 262 is fixedly mounted on the top of the mounting base 221, the limiting cylinder 261 is fixedly mounted on the limiting bracket 262, the limiting column 263 is fixedly mounted on the output end of the limiting cylinder 261, the external workpiece 0 is supported under the pushing of the limiting cylinder 261 for limiting, and the clamping stability of the external workpiece 0 on the tensioning component 22 is increased.

This earhole machine still installs the response subassembly 27 in adjusting limiting plate 2531 both sides including fixed, and response subassembly 27 includes erection column 271, response cylinder 272, inductor 273, and erection column 271 top fixed mounting has response cylinder 272, and inductor 273 fixed mounting is in the flexible end of response cylinder 272, and inductor 273 is used for responding to the position of outside work piece 0, conveniently adjusts outside work piece 0.

In the present embodiment, the ear hole drilling mechanism 1 includes an ear hole drilling assembly 11 for performing an ear hole drilling operation, a position adjusting assembly 12 for adjusting a front-back position of the ear hole drilling assembly 11, and a base 13 disposed side by side with the three-coordinate positioning mechanism 2, wherein the position adjusting assembly 12 includes an alignment cylinder 121, a cylinder mounting seat 122, a front-back moving plate 123, a front-back slider 124, and front-back sliding rails 125 located on two sides of the cylinder mounting seat 122.

The cylinder mounting seat 122 is fixedly mounted on the side of the base 13, the alignment cylinder 121 is fixedly mounted on the cylinder mounting seat 122, the front and rear sliding rails 125 are fixedly mounted on the base 13, the front and rear sliding blocks 124 are movably mounted on the front and rear sliding rails 125, the front and rear moving plates 123 are fixedly mounted on the front and rear sliding blocks 124, the side walls of the front and rear moving plates 123 are fixedly connected with the output end of the alignment cylinder 121, the lug hole drilling assembly 11 is fixedly mounted on the front and rear moving plates 123, and the front and rear moving plates 123 horizontally and linearly move under the driving of the alignment cylinder 121 to adjust the position of the lug hole drilling assembly 11.

In position control assembly 12, through the drive of counterpoint cylinder 121, make fore-and-aft movement board 123 drive and bore ear hole subassembly 11 front and back linear motion, adjust the front and back position of boring ear hole subassembly 11, make and bore ear hole subassembly 11 and can reach the purpose and bore the ear hole position, for 0 bores the ear hole of outside work piece, set up position control assembly 12 moreover and can promote the location accuracy to boring ear hole subassembly 11.

In the present embodiment, the ear hole drilling assembly 11 includes a left and right driving motor 111, a left and right slide rail 112, a left and right slide rail mounting seat 113, and a left and right moving plate 114, wherein the left and right slide rail mounting seat 113 is fixedly installed on the front and rear moving plate 123, the left and right slide rail 112 is fixedly installed on the left and right slide rail mounting seat 113, the left and right slide rail 112 is movably installed with a left and right slide block 115, and the left and right moving plate 114 is fixedly installed on the left and right slide block 115 and slides on the left and right slide rail 112 together with the left and; the driving end of the left and right driving motor 111 is fixedly connected to the left and right movement plate 114, and the left and right movement plate 114 is driven by the left and right driving motor 111 to perform horizontal linear movement.

The ear-drilling assembly 11 further comprises a rotary motor (not shown), a rotary motor mounting base 116, a driving wheel (not shown), a driven wheel 117, a transmission belt 118, a drill bit 119 and a cutter 110; the rotary motor mounting base 116 is fixedly mounted on the left and right movement plate 114, the rotary motor is fixedly mounted in the rotary motor mounting base 116, the driving wheel is fixedly mounted at the driving end of the rotary motor, the drill bit 119 is fixedly mounted on the left and right movement plate 114, the drill bit 119 is parallel to the advancing direction of the left and right movement plate 114, the driven wheel 117 is fixedly mounted at the bottom end of the drill bit 119, the driving wheel and the driven wheel 117 are connected through a transmission belt 118, and the cutter 110 is fixedly mounted at the top end of the drill bit 119.

The rotary motor drives the driving wheel to rotate, the driven wheel 117 is driven to rotate by the transmission belt 118, and the drill bit 119 and the cutter 110 are driven to rotate, so that the external workpiece 0 reaching the target position is drilled.

The left and right driving motor 111 drives the left and right movement plate 114 to perform horizontal linear movement, drives the components fixed on the left and right movement plate 114 to perform horizontal movement, adjusts the left and right positions of the drill bit 119, is used in cooperation with the position adjusting assembly 12, enables the drill bit 119 to perform front and back and left and right position adjustment, and improves the positioning accuracy of the drill bit 119.

In the present embodiment, the ear hole drilling mechanism 1 further includes an oil feeding assembly 14 and an oil return assembly 15; the oil feeding assembly 14 comprises oil pipe mounting seats 141 fixedly mounted on the rack, the oil pipe mounting seats 141 are located on two sides of the base 13, oil pipes 142 are fixedly mounted on the oil pipe mounting seats 141, the oil pipes 142 are connected with an external oil feeding mechanism, and oil feeding ends of the oil pipes 142 are located above the drill bit 119 and supply oil to the cutter 110; the oil return assembly 15 comprises an oil return opening 151 arranged on the frame, the surface of the oil return opening 151 is in a net shape, and the oil return opening 151 is located between the base 13 and the three-coordinate positioning mechanism 2.

In the process of drilling the lug hole, high temperature is generated, poor cutting is easily caused due to overhigh temperature, even a workpiece is burnt out, and the oil supply mechanism 14 is arranged to supply oil to the cutter 110 on the drill bit 119, so that the temperature on the cutter 110 can be reduced, the abrasion of the cutter 110 is reduced, the workpiece 0 can be prevented from being burnt out, and the processing yield is improved; by providing the oil return mechanism 15, the oil dropped from the cutter 110 is recovered and reused.

In this embodiment, the ear hole drilling mechanism 1 further includes a guide seat 16 fixedly mounted on the left and right movement plate, the guide seat 16 is located on the side surface of the drill bit 119, a guide block 17 is fixedly mounted on the guide seat 16, a guide element 18 is movably mounted on the guide block 17, the guide element 18 is parallel to the drill bit 119, a support element 19 is fixedly mounted at the top end of the guide element 18, the support element 19 is located in front of the drill bit 119, and at least 2 support holes 191 are formed in the support element 19, and the cutter 110 penetrates through the support holes 191.

When drilling ear holes, such as watch cases, four ears of the watch case need to have smaller ear hole diameters, so that the diameter of the used cutter 110 is relatively small, the diameter of the cutter 110 is usually only 1mm, the cutter is slender, and therefore the cutter 110 needs to be supported, and a support 119 is arranged; in order to adapt to various watchcases, a guide block 17 and a guide part 18 are arranged, and the cutter 110 is adapted to the drilling positions of different watchcases by linearly adjusting the guide part 18.

The utility model has the advantages that:

compared with the prior art, the utility model discloses the automatic ear hole drilling machine that implements, it is applicable to and drills to the gauge outfit of watchcase, has solved current device and has had the problem of difficulty in position, angle modulation to the work piece (specifically the gauge outfit of watchcase) to can also reduce the processing degree of difficulty.

The above description is intended to be illustrative of the present invention and is not intended to be limiting, and all such modifications, equivalents and improvements as fall within the spirit and scope of the invention are intended to be included therein.

Claims

1. An automatic ear hole drilling machine is characterized by comprising a rack, an ear hole drilling mechanism and a three-coordinate positioning mechanism, wherein the ear hole drilling mechanism and the three-coordinate positioning mechanism are arranged on the rack side by side;

the three-coordinate positioning mechanism comprises a rotating assembly, a tensioning assembly, an X-axis moving assembly with horizontal linear motion guide, an angle adjusting assembly with a swinging angle in the horizontal direction, and a Z-axis moving assembly with vertical motion guide; the X-axis motion assembly is fixedly arranged on the rack, the Z-axis motion assembly is arranged on the X-axis motion assembly, and the X-axis motion assembly drives the lower horizontal straight line to move; the angle adjusting assembly is mounted on the Z-axis moving assembly and moves along with the Z-axis moving assembly; the tensioning assembly is arranged at the swinging end of the angle adjusting assembly and is driven by the angle adjusting assembly to swing by an angle; the rotating assembly is installed below the tensioning assembly, the output end of the rotating assembly is fixed with the tensioning assembly, the tensioning assembly is driven to rotate 180 degrees, and an external workpiece is fixed to the top of the tensioning assembly.

2. The automatic ear-drilling machine of claim 1, wherein the X-axis motion assembly comprises an X-axis base plate, an X-axis slide rail, an X-axis slide block, an L-shaped mount, an X-axis rack, an X-axis gear, an X-axis runner, an X-axis spindle, and an X-axis transmission block; the X-axis bottom plate is fixedly arranged on the rack, the X-axis sliding rail is fixedly arranged on the X-axis bottom plate, and the X-axis sliding block is movably arranged on the X-axis sliding rail; the L-shaped mounting seat is fixedly mounted on the X-axis sliding block, and the L-shaped mounting seat and the X-axis sliding block slide on the X-axis sliding rail together; the X-axis rack is fixedly arranged on the X-axis bottom plate and is parallel to the X-axis slide rail, and the X-axis rack is positioned on the outer side of the X-axis slide rail; the X-axis gear is fixedly arranged at the bottom of the X-axis rotating shaft, is meshed with the X-axis rack, is fixedly arranged at the top of the X-axis rotating shaft, and is rotated to drive the X-axis gear to rotate; the X-axis rotating shaft is fixedly sleeved with an X-axis bearing, an X-axis transmission block is sleeved on the X-axis rotating shaft through the X-axis bearing, the X-axis transmission block is positioned above the X-axis gear, and the X-axis transmission block is fixed with one side of the L-shaped mounting seat; the Z-axis movement assembly is fixedly arranged on the L-shaped mounting seat;

and the X-axis rotating wheel is rotated to drive the X-axis gear to rotate so that the X-axis gear linearly moves on the X-axis rack and drive the X-axis transmission block to linearly move, so that the L-shaped mounting seat and the Z-axis movement assembly move on the X-axis slide rail.

3. The automatic ear-drilling machine of claim 2, wherein the Z-axis motion assembly comprises a Z-axis slide rail, a Z-axis slide block, a Z-axis slide plate, a Z-axis cylinder, a Z-axis limit wheel and a Z-axis guide rod;

the Z-axis slide rail is fixedly arranged on the side wall of the L-shaped mounting seat, the Z-axis slide block is movably arranged on the Z-axis slide rail, and the Z-axis slide plate is fixedly arranged on the Z-axis slide block; the Z-axis cylinder is arranged at the bottom of the Z-axis sliding plate and drives the Z-axis sliding plate to drive the Z-axis sliding block to move up and down on the Z-axis sliding rail; a guide rod mounting block is fixedly mounted on one side of the Z-axis sliding plate, the Z-axis guide rod is fixedly mounted on the guide rod mounting block, and the Z-axis guide rod is parallel to the Z-axis sliding rail; the Z-axis limiting wheel is fixedly arranged at the top of the Z-axis guide rod and abuts against the top of the L-shaped mounting seat in the process of moving downwards along with the Z-axis sliding plate;

a Z-axis guide block is fixedly mounted on the side surface of the L-shaped mounting seat, a guide rod through hole for allowing a Z-axis guide rod to penetrate is formed in the Z-axis guide block, and the Z-axis guide rod is movably sleeved in the guide rod through hole; the tensioning assembly is fixedly arranged on the Z-axis sliding plate and moves up and down along with the Z-axis sliding plate; the angle adjusting assembly is installed on the Z-axis sliding plate, and the swinging end of the angle adjusting assembly penetrates through the Z-axis sliding plate and then is connected with the tensioning assembly.

4. The automatic ear hole drilling machine of claim 3, wherein the tensioning assembly comprises a mounting base, a drive member, a piston rod, a piston sleeve, a clamp member, and a protective housing;

the rotating assembly comprises a rotating cylinder, the rotating cylinder is fixedly installed at the bottom of the installation base, and a driving end of the rotating cylinder penetrates through the bottom of the installation base to be fixedly connected with the driving piece;

the piston rod is connected with the driving piece, the driving piece drives the piston rod to perform telescopic motion along the axial direction, and the piston sleeve is fixedly sleeved on the piston rod; a round-table-shaped supporting block integrally extends out of the top of the piston rod, and at least 2 limiting convex strips are arranged on the outer wall of the piston sleeve;

the clamping piece is provided with at least 2 limiting open holes, the far ends of the limiting open holes extend out of an integrated supporting head, and the thickness of the supporting head is gradually increased from one end facing the limiting open holes to the top end;

the clamping piece is sleeved on the piston rod, the limiting convex strips penetrate through the limiting holes and are attached to the outer wall of the clamping piece, and the bottom end of the clamping piece is fixed on the driving piece; under the drive of the driving piece, the piston rod extends out to drive the limiting convex strip to move in the limiting hole, and the supporting head is radially expanded by the tensioning block; the protective shell is sleeved outside the clamping piece, the bottom of the protective shell is fixed with the driving piece, a protective shell opening is formed in the top of the protective shell, and the supporting head extends out of the protective shell opening;

the top of the mounting base is provided with a mounting opening, a mounting bearing is arranged in the mounting opening, and the protective shell is mounted in the mounting opening through the mounting bearing; the outer side wall of the mounting base is fixedly connected with the swinging end of the angle adjusting component.

5. The automatic ear-drilling machine according to claim 4, characterized in that the side wall of the L-shaped mounting seat is provided with a through opening, X-axis supporting blocks fixedly arranged on the L-shaped mounting seat are arranged at two sides of the through opening, and an accommodating space is formed between the L-shaped mounting seat and the X-axis supporting blocks;

the angle adjusting assembly comprises a rotating plate, a connecting rod, an adjusting wheel, a connecting rod supporting block, a connecting piece, a rotating piece, a first connecting shaft and a second connecting shaft; the Z-axis sliding plate is fixedly provided with adjusting limit plates which are arranged in parallel, angle rotating holes and angle limiting holes are formed in the adjusting limit plates, and the angle rotating holes are located above the angle limiting holes;

the side edge of the top of the rotating plate is provided with a first rotating hole penetrating through two side walls of the rotating plate, a first angle rotating shaft is fixedly arranged in the first rotating hole, an anti-rotating bearing is fixedly arranged in the angle rotating hole, and two ends of the first angle rotating shaft extend out of the first rotating hole and are arranged in the angle rotating hole through the anti-rotating bearing;

the rotating plate is also provided with a second rotating hole positioned below the first rotating hole, the second rotating hole penetrates through two side walls of the rotating plate, a second angle rotating shaft is fixedly arranged in the second rotating hole, and the second angle rotating shaft is accommodated in the angle limiting hole and moves in the range of the angle limiting hole after extending out of the second rotating hole; the first angle rotating shaft and the second angle rotating shaft are parallel; the outer side wall of the mounting base is fixedly connected with the rotating plate and swings along with the rotating plate to adjust the angle of an external workpiece;

the bottom of the rotating plate is provided with a U-shaped accommodating opening, one end of the connecting piece is provided with an accommodating notch, one end of the rotating piece is installed in the U-shaped accommodating opening through the first connecting shaft, and the other end of the rotating piece is installed in the accommodating notch through the second connecting shaft; one end of the connecting rod is fixedly arranged in the connecting piece and is abutted against the rotating piece, a first accommodating hole for accommodating the connecting rod is formed in the Z-axis sliding plate, the connecting rod supporting block is fixedly arranged on the Z-axis sliding plate, a second accommodating hole for accommodating the connecting rod is formed in the connecting rod supporting block, and the other end of the connecting rod is fixedly connected with the adjusting wheel after sequentially passing through the first accommodating hole, the second accommodating hole and the accommodating space; the connecting rod supporting block is positioned in the through opening;

the adjusting wheel is driven to push or pull the connecting rod out, so that the rotating plate swings left and right.

6. The automatic ear hole drilling machine of claim 5, characterized in that the three-coordinate positioning mechanism further comprises a limiting assembly, the limiting assembly comprises a limiting cylinder, a limiting bracket and a limiting post, the limiting bracket is fixedly installed at the top of the mounting base, the limiting cylinder is fixedly installed on the limiting bracket, the limiting post is fixedly installed at the output end of the limiting cylinder, and an external workpiece is supported to limit under the pushing of the limiting cylinder;

this ear hole machine still installs the response subassembly in adjusting limiting plate both sides including fixed, the response subassembly includes erection column, response cylinder, inductor, erection column top fixed mounting has the response cylinder, inductor fixed mounting be in the flexible end of response cylinder, the inductor is used for responding to the position of outside work piece.

7. The automatic ear-drilling machine according to claim 1, characterized in that the ear-drilling mechanism comprises a position adjusting component for adjusting the front and back positions of the ear-drilling component, a base arranged side by side with the three-coordinate positioning mechanism, and an ear-drilling component for performing ear-drilling operation, wherein the position adjusting component comprises an alignment cylinder, a cylinder mounting seat, a front and back moving plate, a front and back sliding block, and a front and back sliding rail positioned at two sides of the cylinder mounting seat;

the cylinder mount pad fixed mounting be in on the side of base, counterpoint cylinder fixed mounting be in on the cylinder mount pad, the front and back slide rail is fixed to be installed on the base, front and back slider movable mounting be in on the front and back slide rail, the fore and aft movement board fixed mounting be in on the front and back slide rail, and the lateral wall of fore and aft movement board and the output fixed connection who counterpoints the cylinder, bore ear hole subassembly and fix and install on the fore and aft movement board, under the drive of counterpoint cylinder, the straight linear motion of fore and aft movement board horizontal adjusts the position of boring ear hole subassembly.

8. The automatic ear-drilling machine according to claim 7, wherein the ear-drilling assembly comprises left and right driving motors, left and right slide rails, left and right slide rail mounting seats, and left and right moving plates, wherein the left and right slide rail mounting seats are fixedly installed on the front and rear moving plates, the left and right slide rails are fixedly installed on the left and right slide rail mounting seats, left and right slide blocks are movably installed on the left and right slide rails, and the left and right moving plates are fixedly installed on the left and right slide blocks and slide on the left and right slide rails together with the left and right slide blocks; the driving end of the left and right driving motor is fixedly connected with the left and right moving plate, and the left and right moving plate is driven by the left and right driving motor to perform horizontal linear motion;

the ear hole drilling assembly further comprises a rotary motor, a rotary motor mounting seat, a driving wheel, a driven wheel, a transmission belt, a drill bit and a cutter; the rotary motor mounting seat is fixedly mounted on the left and right moving plate, the rotary motor is fixedly mounted in the rotary motor mounting seat, the driving wheel is fixedly mounted at the driving end of the rotary motor, the drill bit is fixedly mounted on the left and right moving plate, the advancing direction of the drill bit is parallel to that of the left and right moving plate, the driven wheel is fixedly mounted at the bottom end of the drill bit, the driving wheel and the driven wheel are connected through the transmission belt, and the cutter is fixedly mounted at the top end of the drill bit;

9. The automatic earhole drilling machine of claim 8, wherein the earhole drilling mechanism further comprises an oil feed assembly and an oil return assembly; the oil feeding assembly comprises oil pipe mounting seats fixedly mounted on the frame, the oil pipe mounting seats are located on two sides of the base, oil pipes are fixedly mounted on the oil pipe mounting seats and connected with an external oil supply mechanism, and oil feeding ends of the oil pipes are located above the drill bit and used for supplying oil to the cutter; the oil return assembly comprises an oil return port arranged on the rack, the surface of the oil return port is net-shaped, and the oil return port is positioned between the base and the three-coordinate positioning mechanism.

10. The automatic ear-hole drilling machine according to claim 8, characterized in that the ear-hole drilling mechanism further comprises a guide seat fixedly mounted on the left and right moving plates, the guide seat is located on the side surface of the drill, a guide block is fixedly mounted on the guide seat, a guide member is movably mounted on the guide block, the guide member is parallel to the drill, a support member is fixedly mounted on the top end of the guide member, the support member is located in front of the drill, and at least 2 support holes are formed in the support member, and the cutter penetrates through the support holes.