Automatic manufacturing unit for drill bit combined machining

Abstract

The invention relates to the technical field of automation, and discloses an automatic manufacturing unit for automatic combined machining of drill bits, which comprises a workpiece distributing and positioning device and a truss robot, the truss robot comprises a truss erected between the workpiece distributing and positioning device and the machine tool and a three-axis moving gripper device arranged on the truss. The gripper device comprises a first gripper assembly and a second gripper assembly, wherein the positions of the first gripper assembly and the second gripper assembly can be switched, and the first gripper assembly and the second gripper assembly are used for clamping workpieces. The workpiece distributing and positioning device comprises a first stock bin used for storing workpieces, a distributing mechanism connected with the first stock bin and a workpiece direction adjusting mechanism arranged at the discharging end of the distributing mechanism. The device has the beneficial effects that the workpiece machining efficiency is improved, and the labor cost is reduced.

Description

Technical Field

[0001] The present invention relates to the field of automation technology, and in particular, to an automated manufacturing unit for automatic composite machining of drill bits. Background Art

[0002] As Figure 19 shown, a drill bit 8 (a drill bit blank to be machined) has a rectangular cross-section at the head, which belongs to a special-shaped drill bit. Subsequently, a numerical control machine tool (such as a machining center) is required to mill the four sides of the end of the drill bit to improve the accuracy. At the same time, a cross groove needs to be opened on the end face. The machined drill bit is as Figure 20 shown. Currently, this type of drill bit is subjected to composite machining on the machine tool manually, with manual loading and unloading. And because the special-shaped drill bit has a directionality during machining, after loading, manual tool setting is also required, and one worker needs to be configured for each machine tool. Manual loading and unloading is inefficient, the machine tool has a long waiting time, and manual long-term operation is prone to fatigue, which will further reduce the efficiency. Moreover, due to fatigue and other reasons, the concentration will decrease, resulting in the scrapping of the workpiece during machining. Summary of the Invention

[0003] In order to solve the above problems existing in the prior art, the present invention provides an automated manufacturing unit for automatic composite machining of drill bits, which can greatly improve the machining efficiency of workpieces, improve the machining quality, and significantly reduce the labor cost.

[0004] To achieve the above object, the present invention adopts the following technical solutions: An automated manufacturing unit for automatic composite machining of drill bits includes a workpiece sorting and positioning device, a gantry robot, and a machine tool; the gantry robot includes a gantry erected between the workpiece sorting and positioning device and the machine tool, and a gripper device with three-axis movement provided on the gantry. The gripper device includes two groups of first gripper assemblies and second gripper assemblies for clamping workpieces, which can switch positions. The workpiece sorting and positioning device includes a first bin for storing workpieces, a sorting mechanism connected to the first bin, and a workpiece orientation adjustment mechanism provided at the discharge end of the sorting mechanism; when a single workpiece is separated by the sorting mechanism, it is adjusted to a preset position by the workpiece orientation adjustment mechanism. The first gripper assembly grabs the workpiece and sends it to the machine tool fixture, and the second gripper assembly removes the machined workpiece from the machine tool fixture. Then, the first gripper assembly loads the workpiece to be machined into the machine tool fixture for machining.

[0005] By adopting the above technical solution: the workpieces are separated individually through the workpiece dividing and positioning device, and then the drill bit to be processed is grabbed by the first gripper assembly, the gripper device moves along the truss to the machine tool fixture, and the processed workpiece on the machine tool fixture is grabbed by the second gripper assembly, and then the positions of the first gripper and the second gripper are exchanged, and the first gripper loads the workpiece to be processed into the machine tool fixture for processing; automatic loading and unloading of workpieces is realized through this system, which greatly improves the processing efficiency of the workpieces, reduces labor requirements, and reduces labor costs.

[0006] Preferably, the material distribution mechanism includes a fixed support frame, a movable material distribution frame, and a first lifting power that drives the material distribution frame to reciprocate and rise and fall; the support frame includes a plurality of support members distributed at intervals, the support members are provided with a plurality of first support surfaces that are distributed upward in a step-like manner, and the upper end of the support member is provided with a discharge guide surface; the material distribution frame includes a plurality of material distribution members distributed at intervals, the bottom of the material distribution member is connected to the first lifting power, and the material distribution member is provided with a plurality of second support surfaces that are distributed upward in a step-like manner; the material distribution member is arranged between the support members, and the first support surface and the second support surface are staggered in the horizontal direction; the bottom surface of the first silo is configured as an inclined surface, and the lowermost first support surface on the support member is connected to the lower end of the bottom surface of the first silo; when the material distribution frame is lifted and lowered once, a workpiece on each first support surface is simultaneously lifted to the upper first support surface, and the workpiece on the uppermost first support surface enters the discharge guide surface. This type of material distribution mechanism has a simple structure, convenient control, and good stability, and can achieve stable material distribution with only one lifting power.

[0007] Preferably, a vertically distributed first stop surface is provided between adjacent first supporting surfaces, and a vertically distributed second stop surface is provided between adjacent second supporting surfaces; the first stop surface and the second stop surface are staggered in the vertical direction so that only one workpiece can be accommodated between the second supporting surface and the corresponding first stop surface; the first supporting surface and the second supporting surface are configured as inclined surfaces so that the workpiece always remains in contact with the first stop surface or the second stop surface due to its own gravity.

[0008] Preferably, the workpiece orientation adjustment mechanism includes a pre-positioning mechanism, an axial positioning mechanism, and a circumferential adjustment mechanism; the pre-positioning mechanism includes a lifting seat and a second lifting power provided at the bottom of the lifting seat. One end of the lifting seat is provided with a first support seat, and the other end of the lifting seat is provided with a second support seat. The top surface of the first support seat is provided with a first limiting groove, and the top surface of the second support seat is provided with a second limiting groove; when the workpiece is separated individually by the material distribution mechanism and enters the pre-positioning mechanism, both ends of the workpiece are pre-positioned by the first limiting groove and the second limiting groove respectively. The workpiece separated from the material distribution mechanism is pre-positioned first, then axially positioned, and finally the circumferential position is adjusted to a suitable position. The circumferential position of the workpiece grabbed by the first gripper assembly each time is the same, eliminating the subsequent tool setting operation in machine tool processing and further improving the processing efficiency.

[0009] Preferably, the axial positioning mechanism includes a third gripper assembly and a first translation power for driving the third gripper assembly to approach or move away from the pre-positioned workpiece. The third gripper assembly includes two groups of clamping arms and a clamping power for driving the two groups of clamping arms to approach or move away synchronously. The opposite sides of the two groups of clamping arms are both provided with V-shaped positioning grooves for centering; after the workpiece is pre-positioned, the second lifting power drives the lifting seat to rise to a preset position, the first translation power drives the third gripper assembly to move to the pre-positioned workpiece, and the clamping power drives the two groups of clamping arms to clamp the workpiece, and the axis of the workpiece is positioned.

[0010] Preferably, the circumferential adjustment mechanism includes a pressing plate provided on the first support seat, a second translation power for driving the pressing plate to move along the axis of the workpiece, a first motor provided outside the second support seat, and a third translation power for driving the first motor to move along the axis of the workpiece; a positioning sleeve is provided at the shaft end of the first motor, the axis of the positioning sleeve is coaxially distributed with the axially positioned workpiece, and a positioning hole adapted to the cross-sectional shape of the end of the workpiece is provided at the end of the positioning sleeve; when the workpiece is axially positioned, the second translation power drives the pressing plate to abut against one end of the workpiece, the third translation power drives the positioning sleeve to abut against the other end of the workpiece, the first motor drives the positioning sleeve to rotate forward at least one full turn, so that one end of the workpiece enters the positioning hole. At this time, the third gripper assembly releases the workpiece, and the first motor drives the positioning sleeve to rotate reversely to a preset position and then stops, and the circumferential direction of the workpiece is adjusted to the preset position. This kind of circumferential adjustment mechanism has a simple structure, few actions, less control, and better stability.

[0011] Preferably, a plurality of guide rods parallel to the axis of the workpiece are provided at the upper end of the first bin, an adjusting plate is provided between the guide rods, the adjusting plate is slidably connected to the guide rods through sliding sleeves, and locking members are provided on the sliding sleeves. The width dimension of the first bin in the width direction can be adjusted through the adjusting plate, so as to be adapted to workpieces of different lengths, and the versatility is strong.

[0012] Preferably, the second support base is fixedly arranged on the lifting base, the first support base is slidably connected to the lifting base, and a first translation mechanism for adjusting the distance between the first support base and the second support base is arranged between the lifting base and the first support base; a second translation mechanism for adjusting the position where the third gripper assembly grabs the workpiece is arranged at the bottom of the first translation power. The distance between the first support base and the second support base is adjustable to adapt to the pre-positioning of workpieces with different lengths.

[0013] Preferably, a second bin is arranged at the upper end of the first bin. A slide bar parallel to the workpiece is arranged on the lower side of the feeding end of the second bin. A slider is arranged on the slide bar. The slider is locked and limited to the slide bar through a fastener. An inductor for detecting the position states of both ends of the workpiece is arranged on the slider; after a workpiece separated from the material distribution mechanism is adjusted in position by the workpiece orientation adjustment mechanism, the first gripper assembly grabs the workpiece and moves one end of the workpiece to the inductor. If the inductor detects that the positions of both ends of the workpiece are correct, the workpiece is moved to the machine tool; if the inductor detects that the positions of both ends of the workpiece are incorrect, the workpiece is put into the second bin. Since the outer diameters of both ends of some workpieces are different, the inductor can cooperate to detect whether the positions of both ends of the workpiece are incorrect, further improving the overall stability.

[0014] Preferably, a third bin is further included. The second bin and the third bin are distributed on both sides of the workpiece orientation adjustment mechanism; when the processed workpiece is moved to the workpiece orientation adjustment mechanism by the second gripper assembly, the second gripper assembly first puts the workpiece into the third bin, and then the first gripper assembly grabs the workpiece to be processed. When the gripper device moves to the workpiece orientation adjustment mechanism, the second gripper assembly releases the processed workpiece into the third bin, and then the first gripper assembly grabs the workpiece to be processed. The overall layout is reasonable, and the release and clamping of the workpiece are more convenient and fast.

[0015] Preferably, the first gripper assembly and the second gripper assembly are arranged on a rotating base, and a rotating power is connected to the rotating base. The rotating power is configured to drive the first gripper assembly and the second gripper assembly to reciprocate between a first state and a second state; in the first state, the first gripper assembly is in a vertically downward state; in the second state, the second gripper assembly rotates to coincide with the position of the first gripper assembly in the first state. By the rotating power and the turning power, the position switching of the first gripper assembly and the second gripper assembly is driven, reducing the repeated adjustment of the truss robot to the workpiece.

[0016] Preferably, the first gripper assembly includes two sets of clamping arm assemblies distributed oppositely and a clamping arm power source for driving the clamping arm assemblies to approach or separate synchronously; each clamping arm assembly includes a connecting arm and clamping seats provided at both ends of the connecting arm. A clamping groove is provided on the inner side of each clamping seat, and long slot holes are provided at both ends of the connecting arm. The end of the clamping seat is fastened to the long slot hole by a bolt. The distance between the clamping seats can be adjusted through the long slot holes to meet the clamping of workpieces with different lengths, and the versatility is better.

[0017] Therefore, the present invention has the following beneficial effects: (1) The single workpiece is stably separated by the workpiece feeding and positioning device, and the separated workpiece is automatically transported to the machine tool fixture by the truss robot, realizing automatic loading and unloading of the workpiece, improving the machining efficiency of the workpiece and reducing the labor cost; (2) The workpiece feeding and positioning device can realize pre-positioning, axial positioning and circumferential position adjustment of the workpiece. The position and angle of the workpiece grasped by the truss robot each time are consistent, eliminating the subsequent tool setting operation of the machine tool and further improving the machining efficiency; (3) The feeding mechanism has a simple and stable structure, and the single continuous and stable separation of the workpiece can be realized through a simple lifting action, and the stability of workpiece separation is good. Description of the Drawings

[0018] Figure 1 It is a schematic structural diagram of the present invention.

[0019] Figure 2 It is a schematic structural diagram of the truss robot.

[0020] Figure 3 It is a schematic structural diagram of the workpiece feeding and positioning device.

[0021] Figure 4 For Figure 3 partial structural schematic diagram.

[0022] Figure 5 For Figure 4 internal structural schematic diagram.

[0023] Figure 6 It is a schematic diagram of the feeding structure.

[0024] Figure 7 For Figure 6 exploded view.

[0025] Figure 8 It is a schematic diagram of the workpiece being limited by the first supporting surface and the first material blocking surface.

[0026] Figure 9 It is a schematic diagram of the workpiece being limited by the second supporting surface and the first material blocking surface after the feeding rack rises.

[0027] Figure 10 It is a schematic diagram of the workpiece being limited by the second supporting surface and the second material blocking surface when the feeding rack rises to the highest position.

[0028] Figure 11 Schematic diagram of the workpiece being limited by the first support surface and the second material blocking surface during the descent of the material distribution rack.

[0029] Figure 12 Schematic diagram of the workpiece being limited by the first support surface and the first material blocking surface when the material distribution rack descends to the lowest position.

[0030] Figure 13 Schematic diagram after the workpiece at the uppermost end in the material distribution mechanism enters the pre-positioning mechanism along the material discharge guiding surface.

[0031] Figure 14 Schematic diagram of the state where the workpiece is clamped and positioned by the axial positioning mechanism after the lifting seat rises.

[0032] Figure 15 Schematic diagram of the initial state where both ends of the workpiece are abutted by the pressure plate and the positioning sleeve respectively.

[0033] Figure 16 Schematic diagram of the state where the third gripper assembly releases the workpiece after the end of the workpiece enters the positioning hole.

[0034] Figure 17 Schematic diagram of the state where the third gripper assembly clamps the workpiece again and the positioning sleeve separates from the workpiece after the circumferential adjustment of the workpiece.

[0035] Figure 18 Schematic diagram of the structure of the gripper device.

[0036] Figure 19 Schematic diagram of the structure of the workpiece (drill bit) to be processed.

[0037] Figure 20 Schematic diagram of the structure of the workpiece (drill bit) after processing. Detailed implementation manners

[0038] In order to make the technical problems, technical solutions and beneficial technical effects to be solved by the present invention clearer and more understandable, the present invention will be further described in detail below with reference to the drawings and multiple exemplary embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the protection scope of the present invention.

[0039] It should be understood that in this text, expressions such as "first" and "second" are only used for descriptive purposes, and should not be construed as indicating or implying relative importance, nor should they be construed as implicitly indicating the number of the indicated technical features. Features defined with "first" and "second" may explicitly or implicitly include at least one of such features.

[0040] Such as Figures 1 - 5The automated manufacturing unit for automatic composite processing of drill bits shown in the figure comprises a workpiece material dividing and positioning device 1, a truss robot 2, and a machine tool 8; the truss robot 2 comprises a truss 20 erected between the workpiece material dividing and positioning device 1 and the machine tool 8, and a three-axis motion gripper device 21 arranged on the truss 20, the gripper device 21 comprises two sets of first gripper assemblies 210 and second gripper assemblies 211 for clamping the workpiece 9 with switchable positions; the workpiece material dividing and positioning device 1 comprises a first gripper assembly 210 for storing the workpiece 9 and a second gripper assembly 211 for storing the workpiece 9. A material bin 10, a material dividing mechanism 11 connected to the first material bin 10, and a workpiece orientation adjustment mechanism 12 arranged at the discharge end of the material dividing mechanism 11; when a single workpiece is separated by the material dividing mechanism 11, it is adjusted to a preset position by the workpiece orientation adjustment mechanism 12, the first gripper assembly 210 grabs the workpiece and sends it to the machine tool fixture 80, the second gripper assembly 211 removes the processed workpiece on the machine tool fixture 80, and then the first gripper assembly 210 loads the workpiece 9 to be processed into the machine tool fixture 80 for processing.

[0041] The material distribution mechanism 11 includes a fixed support frame 110, a movable material distribution frame 111, and a first lifting power 112 that drives the material distribution frame 111 to reciprocate and rise and fall; the support frame 110 includes a plurality of support members 1100 distributed at intervals, and the support members 1100 are provided with a plurality of first support surfaces 1101 distributed upward in a stepped manner, and the upper end of the support members 1100 is provided with a material discharging guide surface 1103; the material distribution frame 111 includes a plurality of material distribution members 1110 distributed at intervals, and the bottom of the material distribution member 1110 is connected to the first lifting power 112, and the material distribution member 1110 is provided with a plurality of first support surfaces 1101 distributed upward in a stepped manner. The second supporting surface 1111 is distributed; the dividing member 1110 is arranged between the supporting members 1100, and the first supporting surface 1101 and the second supporting surface 1111 are staggered in the horizontal direction; the bottom surface of the first silo 10 is configured as an inclined surface, and the lowest first supporting surface 1101 on the supporting member 1100 is connected to the lower end of the bottom surface of the first silo 10; when the dividing frame 111 is lifted and lowered once, a workpiece on each first supporting surface 1101 is lifted to the previous first supporting surface 1101 at the same time, and the workpiece on the highest first supporting surface 1101 enters the discharge guide surface 1103.

[0042] A vertically distributed first stop surface 1102 is provided between adjacent first supporting surfaces 1101, and a vertically distributed second stop surface 1112 is provided between adjacent second supporting surfaces 1111; the first stop surface 1102 and the second stop surface 1112 are staggered in the vertical direction, so that only one workpiece can be accommodated between the second supporting surface 1111 and the corresponding first stop surface 1102; the first supporting surface 1101 and the second supporting surface 1111 are configured as inclined surfaces, so that the workpiece 9 always remains in contact with the first stop surface 1102 or the second stop surface 1112 due to its own gravity.

[0043] like Figure 9As shown, the distance between the second material retaining surface and the corresponding first material retaining surface can only accommodate one workpiece. This distance can be configured to be greater than the radius of the workpiece and less than 1.5 times the radius of the workpiece, so that only one workpiece can be stably accommodated on the second support surface between the first material retaining surface and the second material retaining plate, thus realizing the separate feeding of workpieces. As Figures 8 - 12 shown is the process of the workpiece being lifted from the next first support surface to the previous support surface. Figure 8 After the three workpieces A, B, and C are lifted up and down once with the material dividing rack, they are lifted to Figure 12 the state shown. Workpieces B and C are both lifted to the previous first support surface, and the workpiece A on the uppermost first support surface is lifted to the discharge guiding surface (inclined surface) and rolls along the discharge guiding surface into the pre-positioning mechanism.

[0044] As Figures 13 - 17 shown, the workpiece orientation adjustment mechanism 12 includes a pre-positioning mechanism 120, an axial positioning mechanism 121, and a circumferential adjustment mechanism 122; the pre-positioning mechanism 120 includes a lifting seat 1200, a second lifting power 1201 provided at the bottom of the lifting seat 1200. One end of the lifting seat 1200 is provided with a first support seat 1202, and the other end of the lifting seat 1200 is provided with a second support seat 1203. The top surface of the first support seat 1202 is provided with a first limiting groove 1204, and the top surface of the second support seat 1203 is provided with a second limiting groove 1205; when the workpiece 9 is separated individually by the material dividing mechanism 11 and enters the pre-positioning mechanism 120, both ends of the workpiece 9 are pre-positioned by the first limiting groove 1204 and the second limiting groove 1205 (as Figure 13 shown).

[0045] The axial positioning mechanism 121 includes a third gripper assembly 1210, a first translation power 1211 for driving the third gripper assembly 1210 to approach or move away from the pre-positioned workpiece. The third gripper assembly 1210 includes two groups of clamping arms 1212, a clamping power 1213 for driving the two groups of clamping arms 1212 to approach or move away synchronously. The opposite side surfaces of the two groups of clamping arms 1212 are both provided with V-shaped positioning grooves 1214 for centering; after the workpiece is pre-positioned, the second lifting power 1201 drives the lifting seat 1200 to rise to a preset position, the first translation power 1211 drives the third gripper assembly 1210 to move to the pre-positioned workpiece, and the clamping power 1213 drives the two groups of clamping arms 1212 to clamp the workpiece, and the axis of the workpiece is positioned (as Figure 14 shown).

[0046] The circumferential adjustment mechanism 122 includes a pressing plate 1220 provided on the first support base 1202, a second translation power 1221 for driving the pressing plate 1220 to move axially along the workpiece, a first motor 1222 provided outside the second support base 1203, and a third translation power 1223 for driving the first motor 1222 to move axially along the workpiece; a positioning sleeve 1224 is provided at the shaft end of the first motor 1222, the axis of the positioning sleeve 1224 is coaxially distributed with the axially positioned workpiece, and a positioning hole 1225 adapted to the cross-sectional shape of the end of the workpiece is provided at the end of the positioning sleeve 1224; when the workpiece is axially positioned, the second translation power 1221 drives the pressing plate 1220 to abut against one end of the workpiece, and the third translation power 1223 drives the positioning sleeve 1224 to abut against the other end of the workpiece. The state where both ends of the workpiece are abutted by the pressing plate and the positioning sleeve is as Figure 15 shown; then the first motor 1222 drives the positioning sleeve 1224 to rotate forward at least one full turn, so that one end of the workpiece enters the positioning hole 1225, as Figure 16 shown; When the workpiece enters the positioning hole 1225, the third gripper assembly 1210 releases the workpiece. The first motor 1222 drives the positioning sleeve 1224 to rotate reversely to a preset position and then stops. The circumferential direction of the workpiece is adjusted to the preset position. Then the third gripper assembly grips the workpiece again, and the pressing plate and the positioning sleeve reset to the initial state as Figure 17 shown. At this time, the axial and circumferential positions of the workpiece are both adjusted, waiting for the truss robot to pick up the workpiece, and the position and angle of the first gripper assembly on the truss robot when gripping the workpiece each time are the same, thus saving the subsequent tool setting operation after feeding the workpiece into the machine tool fixture.

[0047] The first lifting power 112, the second lifting power 1201, the first translation power 1211, the second translation power 1221, and the third translation power 1223 in the above embodiments all adopt air cylinders, and the clamping power 1213 adopts a double-headed air cylinder.

[0048] In some embodiments, in order to adapt to workpieces of different lengths and improve versatility, the following scheme is adopted: A plurality of guide rods 100 parallel to the axis of the workpiece are provided at the upper end of the first bin 10. An adjusting plate 101 is provided between the guide rods 100. The adjusting plate 101 is slidably connected to the guide rods 100 through sliding sleeves 1010, and locking members are provided on the sliding sleeves; The second support base 1203 is fixedly provided on the lifting base 1200. The first support base 1202 is slidably connected to the lifting base 1200. A first translation mechanism 1206 for adjusting the distance between the first support base 1202 and the second support base 1203 is provided between the lifting base 1200 and the first support base 1202; A second translation mechanism 1215 for adjusting the position where the third gripper assembly 1210 grips the workpiece is provided at the bottom of the first translation power 1211. As Figure 13As shown, in this embodiment, the first translation mechanism 1206 adopts a gear and rack translation mechanism, that is, a rack is installed on the lifting seat, a motor is installed in the first support seat, and a gear meshing with the rack is arranged on the motor output shaft, so as to realize the movement of the first support seat, making the first support seat approach or move away from the second support seat; the second translation mechanism 1215 adopts a lead screw and nut structure, that is, a nut is installed at the bottom of the first translation power, the nut is connected to the lead screw, and a handwheel is arranged at one end of the lead screw, and the position of the first translation power is adjusted by rotating the handwheel.

[0049] As Figure 3 shown, a second bin 102 is provided at the upper end of the first bin 10. A slide bar 103 parallel to the workpiece is provided on the lower side of the feeding end of the second bin 102. A slider 104 is arranged on the slide bar 103. The slider 104 is locked and limited to the slide bar 103 through a fastener. An inductor 105 for detecting the position states of both ends of the workpiece is arranged on the slider 104; after a workpiece separated from the material distribution mechanism 11 is adjusted in position by the workpiece orientation adjustment mechanism 12, the first gripper assembly 210 grabs the workpiece and moves one end of the workpiece to the inductor 105. If the inductor 105 detects that the positions of both ends of the workpiece are correct, the workpiece is moved to the machine tool; if the inductor 105 detects that the positions of both ends of the workpiece are incorrect, the workpiece is placed into the second bin 102. The inductor adopts a laser reflection sensor, as Figure 19 and Figure 20 shown for the drill workpiece. The outer diameters of both ends of the drill are different. When the thick end moves to the preset position of the inductor, the inductor can detect the drill. When the thin end moves to the preset position of the inductor, the inductor cannot detect it. The positions of both ends of the drill are judged whether they are incorrect through the signal of the inductor. In this structure, the structure of the circumferential adjustment mechanism 122 is simplified, without complex visual recognition and sensor detection, and it can still operate normally when the thin end of the drill enters the positioning hole. Therefore, an inductor is set to further detect whether the positions of both ends of the workpiece are incorrect. That is, by setting a simple inductor, the structure of the circumferential adjustment mechanism is simplified to the greatest extent, reducing the complexity of the equipment, reducing the cost, and at the same time ensuring the stability.

[0050] It further includes a third bin 106. The second bin 102 and the third bin 106 are distributed on both sides of the workpiece orientation adjustment mechanism 12; when the processed workpiece is moved to the workpiece orientation adjustment mechanism 12 by the second gripper assembly 211, the second gripper assembly 211 first places the workpiece into the third bin 106, and then the first gripper assembly 210 grabs the workpiece to be processed.

[0051] As Figure 2 and Figure 18As shown, the first gripper assembly 210 and the second gripper assembly 211 are arranged on the rotating seat 212. A rotating power 213 is connected to the rotating seat 212. The rotating power 213 is configured to drive the first gripper assembly 210 and the second gripper assembly 211 to reciprocate between a first state and a second state. In the first state, the first gripper assembly 210 is in a vertically downward state. In the second state, the second gripper assembly 211 rotates to coincide with the position of the first gripper assembly 210 in the first state. The first gripper assembly 210 includes two sets of clamping arm assemblies 2100 distributed oppositely and a clamping arm power 2101 for driving the clamping arm assemblies 2100 to approach or separate synchronously. The clamping arm assembly 2100 includes a connecting arm 2102 and clamping seats 2103 provided at both ends of the connecting arm 2102. A clamping groove 2104 is provided on the inner side of the clamping seat. Long slot holes 2105 are provided at both ends of the connecting arm 2102. The end of the clamping seat 2103 and the long slot hole are fastened by bolts 2106. In this embodiment, the rotating power uses a rotary cylinder.

[0052] Combined with the attached drawings, the usage method of the present invention is as follows: As Figures 3 - 5 shown, the workpiece 8 is stored in the first bin. The material distribution rack in the material distribution mechanism is installed Figures 8 - 12 and lifted in sequence once. Each time it is lifted, the workpiece on the first support surface is lifted to a step, that is, lifted to the upper first support surface. The workpiece on the uppermost first support surface enters the pre-positioning mechanism 120 as shown in Figure 12 and Figure 13 and is pre-positioned. The lifting seat rises to the state shown in Figure 14 . The third gripper assembly grabs the workpiece to achieve axial positioning of the workpiece. Then the pressure plate and the positioning sleeve approach each other and abut against both ends of the workpiece (as shown in Figure 15 ). The first motor drives the positioning sleeve to rotate forward one week. During this process, the rectangular end of the drill bit will surely enter the positioning hole of the rectangular structure (as shown in Figure 16 ). The third gripper assembly releases the workpiece. The first motor drives the positioning sleeve to rotate reversely to a preset position (the first motor can use a servo motor, and the rotation angle and position of the positioning sleeve are precisely controlled by the servo motor). The third gripper assembly clamps the workpiece again, and the pressure plate and the positioning sleeve return to the initial position shown in Figure 17 . At this time, the workpiece is completely positioned; Figure 18 The first gripper assembly shown in Figure 17 grabs the workpiece, and moves it to the machine tool fixture through the truss robot. During the movement, the rotating power drives the second gripper assembly to rotate to a vertically downward position to prepare for grabbing the processed workpiece on the machine tool fixture. When the second gripper assembly moves to the machine tool fixture and adjusts to a suitable position, it grabs the processed workpiece. The rotating power drives the rotating seat to rotate, so that the first gripper assembly rotates to Figure 17The state shown is presented, and the workpiece to be processed is loaded onto the machine tool fixture. The machine tool processes the workpiece. During the processing, the gantry robot drives the processed workpiece to move to the third bin and places it into the third bin. Meanwhile, the first gripper assembly grabs the next workpiece to be processed again. And so on, to achieve automatic and continuous loading and unloading of workpieces. In some embodiments, a through-beam sensor is arranged between the two ends of the lowermost first support surface. When there is no workpiece on the lowermost first support surface, an alarm is issued through the detection signal of the through-beam sensor to remind the operator to load the first bin with workpieces.

[0053] When using this kind of automated unit to process drill bits, it can achieve 24-hour "black light" (i.e., without light and saving electric energy) automated production. The processing of drill bits is fully automated. The operator only needs to regularly feed materials into the first bin. The number of machine tools managed by one operator has increased from managing one set of machine tools to managing more than ten machine tools. The processing efficiency of a single machine tool has increased from processing eight drill bits per hour to processing 20 drill bits per hour, and the processing efficiency has been significantly improved.

[0054] In the description of the present invention, it should be understood that the directions or positional relationships indicated by up and down, left and right, inner end, outer end, one end, the other end, etc. are based on the orientation or positional relationship shown in the drawings. It is only for the convenience of more clearly describing the technical solution of the present invention, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific orientation, and should not be construed as a limitation to the present invention.

[0055] Although specific embodiments of the present invention are described in detail here, they are given only for the purpose of explanation and should not be considered as constituting a limitation to the scope of the present invention. Various substitutions, changes, and modifications can be conceived without departing from the spirit and scope of the present invention.

Claims

1. An automated manufacturing unit for automatic composite machining of drill bits, characterized in that It comprises a workpiece material dividing and positioning device (1), a truss robot (2), and a machine tool (8); The truss robot (2) comprises a truss (20) erected between a workpiece material dividing and positioning device (1) and a machine tool (8), and a three-axis motion gripper device (21) disposed on the truss (20); the gripper device (21) comprises two sets of switchable positions of a first gripper assembly (210) and a second gripper assembly (211) for clamping a workpiece (9); The workpiece material dividing and positioning device (1) comprises a first material bin (10) for storing workpieces (9), a material dividing mechanism (11) connected to the first material bin (10), and a workpiece orientation adjustment mechanism (12) provided at the material discharging end of the material dividing mechanism (11); After a single workpiece is separated by the material separation mechanism (11) and adjusted to a preset position by the workpiece orientation adjustment mechanism (12), the first gripper assembly (210) grabs the workpiece and delivers it to the machine tool fixture (80), the second gripper assembly (211) removes the processed workpiece from the machine tool fixture (80), and then the first gripper assembly (210) loads the workpiece (9) to be processed into the machine tool fixture (80) for processing.

2. The automated manufacturing unit for automatic composite machining of drill bits according to claim 1, characterized in that, The material distribution mechanism (11) comprises a fixed support frame (110), a movable material distribution frame (111), and a first lifting power (112) for driving the material distribution frame (111) to reciprocate and rise and fall; The support frame (110) comprises a plurality of support members (1100) distributed at intervals, the support members (1100) are provided with a plurality of first support surfaces (1101) distributed in sequence upward in a stepped manner, and the upper end of the support member (1100) is provided with a discharge guide surface (1103); The material distribution rack (111) comprises a plurality of material distribution pieces (1110) distributed at intervals, the bottom of each material distribution piece (1110) is connected to the first lifting power (112), and a plurality of second support surfaces (1111) distributed upward in a stepped manner are provided on the material distribution piece (1110); The material dividing member (1110) is arranged between the supporting members (1100), and the first supporting surface (1101) and the second supporting surface (1111) are staggered in the horizontal direction; the bottom surface of the first material bin (10) is configured as an inclined surface, and the first supporting surface (1101) at the lowest end of the supporting member (1100) is butted against the lower end of the bottom surface of the first material bin (10); When the material distribution rack (111) is lifted once, a workpiece on each first supporting surface (1101) is simultaneously lifted to the previous first supporting surface (1101), and the workpiece on the uppermost first supporting surface (1101) enters the discharge guide surface (1103).

3. An automated manufacturing unit for automatic composite machining of drill bits according to claim 2, characterized in that, A vertically distributed first material stop surface (1102) is provided between adjacent first supporting surfaces (1101), and a vertically distributed second material stop surface (1112) is provided between adjacent second supporting surfaces (1111); the first material stop surface (1102) and the second material stop surface (1112) are staggered in the vertical direction, so that only one workpiece can be accommodated between the second supporting surface (1111) and the corresponding first material stop surface (1102); The first support surface (1101) and the second support surface (1111) are configured as inclined surfaces, such that the workpiece (9) always abuts against the first material retaining surface (1102) or the second material retaining surface (1112) due to its own gravity.

4. An automated manufacturing unit for automatic composite machining of drill bits according to claim 1, characterized in that, The workpiece orientation adjustment mechanism (12) includes a pre-positioning mechanism (120), an axial positioning mechanism (121), and a circumferential adjustment mechanism (122); The pre-positioning mechanism (120) includes a lifting seat (1200), a second lifting power source (1201) provided at the bottom of the lifting seat (1200), a first support seat (1202) provided at one end of the lifting seat (1200), a second support seat (1203) provided at the other end of the lifting seat (1200), a first limiting groove (1204) provided on the top surface of the first support seat (1202), and a second limiting groove (1205) provided on the top surface of the second support seat (1203); After the workpiece (9) is singly separated by the material separating mechanism (11) and enters the pre-positioning mechanism (120), both ends of the workpiece (9) are pre-positioned by the first limiting groove (1204) and the second limiting groove (1205) respectively.

5. An automated manufacturing unit for automatic composite machining of drill bits according to claim 4, characterized in that, The axial positioning mechanism (121) includes a third gripper assembly (1210), a first translation power source (1211) for driving the third gripper assembly (1210) to approach or move away from the pre-positioned workpiece. The third gripper assembly (1210) includes two sets of clamping arms (1212), and a clamping power source (1213) for driving the two sets of clamping arms (1212) to approach or move away synchronously. V-shaped positioning grooves (1214) for centering are provided on the opposing sides of the two sets of clamping arms (1212); After the workpiece is pre-positioned, the second lifting power source (1201) drives the lifting seat (1200) to rise to a preset position. The first translation power source (1211) drives the third gripper assembly (1210) to move to the pre-positioned workpiece, and the clamping power source (1213) drives the two sets of clamping arms (1212) to clamp the workpiece, thereby positioning the axis of the workpiece.

6. An automated manufacturing unit for automatic composite machining of drill bits according to claim 4 or 5, characterized in that, The circumferential adjustment mechanism (122) includes a pressing plate (1220) provided on the first support seat (1202), a second translation power source (1221) for driving the pressing plate (1220) to move along the axis of the workpiece, a first motor (1222) provided outside the second support seat (1203), and a third translation power source (1223) for driving the first motor (1222) to move along the axis of the workpiece; A positioning sleeve (1224) is provided at the shaft end of the first motor (1222). The axis of the positioning sleeve (1224) is coaxially distributed with the axially positioned workpiece. A positioning hole (1225) adapted to the cross-sectional shape of the end of the workpiece is provided at the end of the positioning sleeve (1224); After the workpiece is axially positioned, the second translational driving force (1221) drives the pressing plate (1220) to abut against one end of the workpiece, and the third translational driving force (1223) drives the positioning sleeve (1224) to abut against the other end of the workpiece. The first motor (1222) drives the positioning sleeve (1224) to rotate forward at least one full turn, so that one end of the workpiece enters the positioning hole (1225). At this time, the third gripper assembly (1210) releases the workpiece. After the first motor (1222) drives the positioning sleeve (1224) to rotate reversely to a preset position and stops, the circumferential direction of the workpiece is adjusted to the preset position.

7. An automated manufacturing unit for automatic composite machining of drill bits according to claim 5, characterized in that, A plurality of guide rods (100) parallel to the axis of the workpiece are provided at the upper end of the first bin (10). An adjusting plate (101) is provided between the guide rods (100). The adjusting plate (101) is slidably connected to the guide rods (100) through sliding sleeves (1010), and locking members are provided on the sliding sleeves.

8. An automated manufacturing unit for automatic composite machining of drill bits according to claim 7, characterized in that, The second support base (1203) is fixedly provided on the lifting base (1200). The first support base (1202) is slidably connected to the lifting base (1200). A first translation mechanism (1206) for adjusting the distance between the first support base (1202) and the second support base (1203) is provided between the lifting base (1200) and the first support base (1202). A second translation mechanism (1215) for adjusting the position where the third gripper assembly (1210) grabs the workpiece is provided at the bottom of the first translational driving force (1211).

9. An automated manufacturing unit for automatic composite machining of drill bits according to claim 1, characterized in that, A second bin (102) is provided at the upper end of the first bin (10). A slide bar (103) parallel to the workpiece is provided on the lower side of the feed end of the second bin (102). A slider (104) is provided on the slide bar (103). The slider (104) is locked and limited to the slide bar (103) through a fastener. An inductor (105) for detecting the position states of both ends of the workpiece is provided on the slider (104). After a workpiece separated from the material distribution mechanism (11) is adjusted in position by the workpiece orientation adjustment mechanism (12), the first gripper assembly (210) grabs the workpiece and moves one end of the workpiece to the inductor (105). If the inductor (105) detects that the positions of both ends of the workpiece are correct, the workpiece is moved to the machine tool. If the inductor (105) detects that the positions of both ends of the workpiece are incorrect, the workpiece is placed in the second bin (102).

10. An automated manufacturing unit for automatic composite machining of drill bits according to claim 9, characterized in that, It further includes a third bin (106). The second bin (102) and the third bin (106) are distributed on both sides of the workpiece orientation adjustment mechanism (12). When the processed workpiece is moved to the workpiece orientation adjustment mechanism (12) by the second gripper assembly (211), the second gripper assembly (211) first places the workpiece in the third bin (106), and then the first gripper assembly (210) grabs the workpiece to be processed.

11. An automated manufacturing unit for automatic composite machining of drill bits according to claim 1, characterized in that, The first gripper assembly (210) and the second gripper assembly (211) are arranged on a rotating seat (212), and a rotating power (213) is connected to the rotating seat (212). The rotating power (213) is configured to drive the first gripper assembly (210) and the second gripper assembly (211) to reciprocate between a first state and a second state; In the first state, the first gripper assembly (210) is in a vertically downward state; in the second state, the second gripper assembly (211) rotates to coincide with the position of the first gripper assembly (210) in the first state.

12. An automated manufacturing unit for automatic composite machining of drill bits according to claim 11, characterized in that, The first gripper assembly (210) includes two sets of oppositely distributed clamping arm assemblies (2100) and a clamping arm power (2101) for driving the clamping arm assemblies (2100) to approach or separate synchronously; The clamping arm assembly (2100) includes a connecting arm (2102) and clamping seats (2103) provided at both ends of the connecting arm (2102). A clamping groove (2104) is provided on the inner side surface of the clamping seat. Long slot holes (2105) are provided at both ends of the connecting arm (2102), and the end of the clamping seat (2103) and the long slot hole are fastened by bolts (2106).

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