Full-automatic drilling and tapping all-in-one machine for machining composite bow main wheel

Abstract

The invention provides a full-automatic tapping and drilling all-in-one machine for machining a composite bow main wheel, and belongs to the technical field of numerical control machine tool equipment. The problems that an existing composite bow main wheel is low in machining automation degree and poor in machining efficiency are solved. The full-automatic tapping and drilling all-in-one machine for machining the composite bow main wheel comprises a machine tool body and a truss feeding and discharging device, the machine tool body comprises a feeding and discharging area and a machining area, a workbench is arranged in the machining area, and the truss feeding and discharging device comprises a mechanical arm. A first fixing device used for fixing a workpiece blank and a second fixing device used for fixing a workpiece semi-finished product are arranged on the workbench, a turnover mechanism is further arranged on the machine tool body, and the mechanical arm can move the workpiece semi-finished product to the turnover mechanism to be turned over and then move the workpiece semi-finished product to the second fixing device to be fixed. According to the double-station turning-over machining device, a workpiece blank can be turned over and remachined after being machined, the whole process is automatic, the double-station design is adopted, and the machining continuity and the machining efficiency are higher.

Description

Technical Field

[0001] The invention belongs to the technical field of numerical control machine tools and relates to a fully automatic tapping and drilling machine for processing a main wheel of a compound bow. Background Art

[0002] With the continuous advancement of science and technology, the application of automation equipment in the field of machining is becoming more and more extensive. At present, most automated machine tools are similar to a CNC machine tool with a truss automated manipulator disclosed in Chinese patent application application number: 202321746073.6, including a machine tool body and a manipulator body for grabbing workpieces. The machine tool body has a workpiece loading area and a workpiece processing area. The manipulator body can move the workpiece blank from the workpiece loading area to the workpiece processing area for processing and then move the processed workpiece from the processing area to the workpiece loading area, thereby completing the automatic loading and unloading and automatic processing of the workpiece.

[0003] However, due to the complex structure of some processed workpieces, as shown in the attached manual Fig.11 The main wheel of the compound bow needs to process a square workpiece blank on one side, then turn it over and fix it again to process the other side to obtain the finished product. However, the above-mentioned automatic CNC machine tool can only process one side of the workpiece, and the workpiece can only be processed after manual turning and fixing. This will result in excessively high labor costs and low processing efficiency. Summary of the invention

[0004] The purpose of the present invention is to address the above-mentioned problems in the existing technology and to propose a fully automatic tapping and drilling machine for compound bow main wheel processing. The technical problem to be solved by the present invention is: how to improve the degree of automation and processing efficiency of compound bow main wheel processing.

[0005] The purpose of the present invention can be achieved by the following technical solutions:

[0006] A fully automatic tapping and drilling machine for processing a compound bow main wheel comprises a machine tool body and a truss loading and unloading device, wherein the machine tool body comprises a loading and unloading area and a processing area, wherein a workbench is arranged in the processing area, and the truss loading and unloading device comprises a mechanical arm movable between the loading and unloading area and the processing area, and is characterized in that a first fixing device for fixing a workpiece blank and a second fixing device for fixing a semi-finished workpiece are arranged on the workbench, and a turning mechanism for turning over the semi-finished workpiece is also arranged on the machine tool body, and the mechanical arm can move the semi-finished workpiece to the turning mechanism for turning over, and then move it to the second fixing device for fixing.

[0007] The present invention sets a first fixing device and a second fixing device on the workbench of the machine tool body to form two processing stations, wherein the first fixing device is used to fix the workpiece blank, and the second fixing device is used to fix the turned over workpiece semi-finished. When the present invention processes the workpiece, the robot arm can first move the workpiece blank to the first fixing device for fixing and process the upper side to form a semi-finished workpiece, and then the robot arm moves the semi-finished workpiece to the flipping mechanism for turning over and then moves it to the second fixing device for fixing and processing to form a finished workpiece. After the processing is completed, the finished workpiece is moved to the loading and unloading area by the robot arm for placement, thereby realizing fully automated processing of the workpiece. Moreover, since two processing stations are set on the workbench, the workpiece blank can be placed on the first fixing device after the semi-finished workpiece is moved from the first fixing device to the second fixing device, so that the machine tool spindle can process the workpiece blank and the semi-finished workpiece at one time, thereby reducing the number of shutdowns of the machine tool spindle, improving the working continuity of the machine tool spindle, and further improving the overall processing efficiency of the present invention.

[0008] In the above-mentioned fully automatic drilling and tapping machine for compound bow main wheel processing, the first fixing device includes a first fixing seat and a first fixing mechanism, one side of the first fixing seat has a positioning protrusion protruding upward, the first fixing mechanism has a fixing block, the fixing block is located on a side of the first fixing seat away from the positioning protrusion and opposite to the positioning protrusion, and the first fixing mechanism can drive the fixing block to approach or move away from the positioning protrusion. Through the cooperation between the fixing block and the positioning protrusion, the square workpiece blank can be fixed between the positioning protrusion and the fixing block.

[0009] In the above-mentioned fully automatic tapping and drilling machine for processing the main wheel of the compound bow, the first fixing mechanism also includes a seat body, a side slider, a lift rod and a driving member 1, the seat body is hollow inside and fixedly arranged on one side of the first fixing seat, the seat body is provided with a guide groove on the side close to the first fixing seat, the side slider is slidably arranged in the guide groove, one end of the side slider extends out of the guide groove and is fixedly connected to the fixing block, the side slider is provided with a slide groove, the lift rod is located in the seat body and tilts from bottom to top in a direction away from the first fixing seat, one end of the lift rod is embedded in the slide groove and slidably cooperates with the slide groove, the driving member 1 is connected to the lift rod and is used to drive the lift rod to move up and down. The first fixing mechanism has a simple and compact structure, and the locking and unlocking actions are fast and efficient, and it is stable and reliable after locking, and the workpiece blank is not easy to loosen during the processing process.

[0010] In the above-mentioned fully automatic drilling and tapping machine for processing the main wheel of a compound bow, the tilt angle of the inclined ejector relative to the vertical direction is between 8° and 15°, and the tilt angle of the slide groove is consistent with the tilt angle of the inclined ejector. Within this angle range, the inclined ejector can be locked and unlocked within a relatively short stroke range, and the locking effect is stable and reliable.

[0011] In the above-mentioned fully automatic drilling and tapping machine for processing the main wheel of a compound bow, the guide groove is inclined upward from the direction close to the first fixing seat to the direction away from the first fixing seat, and the inclination angle is 4° to 8°. In this way, after the first fixing seat fixes the workpiece blank, the side slide block can form a certain self-locking effect under the action of gravity, further improving the locking stability.

[0012] In the above-mentioned fully automatic drilling and tapping machine for processing the main wheel of a compound bow, a plurality of through grooves are further provided on the upper surface of the first fixing seat, and the through grooves are spaced apart in the direction from the positioning protrusion to the fixing block. The provision of the through grooves can increase the contact area between the workbench and the air, thereby improving the heat dissipation effect during processing, thereby further ensuring the processing accuracy of the workpiece.

[0013] In the above-mentioned fully automatic drilling and tapping machine for processing the main wheel of a compound bow, the second fixing device includes a second fixing seat and a plurality of second fixing mechanisms spaced around the second fixing seat, the second fixing mechanisms each include a mounting seat, a connecting rod, a buckle and a second driving member, the mounting seat is fixed on the workbench, the two ends of the connecting rod are respectively hinged to the mounting seat and the buckle, the second driving member is connected to the buckle and is used to drive the buckle to swing relative to the second fixing seat, and a positioning pin is also provided in the middle of the second fixing seat. The size of the positioning pin is adapted to the central axis hole of the semi-finished workpiece. When fixing, the central axis hole of the semi-finished workpiece is first matched with the positioning pin, and then the buckle is driven by the second driving member to swing toward one side of the semi-finished workpiece, and the front end of the buckle is engaged with the edge of the semi-finished workpiece, thereby fixing the semi-finished workpiece.

[0014] In the above-mentioned fully automatic tapping and drilling machine for processing the main wheel of a compound bow, the lower end of the robotic arm is fixedly connected to a connecting seat, a rotating seat is provided on the connecting seat, a first clamping mechanism for clamping a workpiece blank and a workpiece semi-finished product and a second clamping mechanism for clamping a workpiece finished product are respectively provided on the rotating seat, and a rotating driving member for driving the rotating seat to rotate and switch the first clamping mechanism and the second clamping mechanism is also provided on the connecting seat.

[0015] In the above-mentioned fully automatic tapping and drilling machine for compound bow main wheel processing, the first clamping mechanism includes a first pneumatic finger, both clamping fingers of the first pneumatic finger are fixedly connected with clamping claws, and the second clamping mechanism is a pneumatic three-jaw chuck.

[0016] In the above-mentioned fully automatic drilling and tapping machine for compound bow main wheel processing, the first clamping mechanism and the second clamping mechanism have the same structure, both including a first pneumatic finger, and the two clamping fingers of the first pneumatic finger are fixedly connected with a clamping claw, and the clamping claw includes a transversely arranged connecting section and a first claw portion located at the outer end of the connecting section and a second claw portion located at the inner end of the connecting section, and the first claw portion and the second claw portion both extend downward, and the downward extension length of the first claw portion is greater than the downward extension length of the second claw portion. The two first claw portions cooperate to fix the two unprocessed outer edges of the workpiece blank and the workpiece semi-finished product, and the two second claw portions cooperate to clamp and fix the central axis of the workpiece semi-finished product and the workpiece finished product, and the second claw portion can avoid the first claw portion to avoid interference with the first claw portion.

[0017] Compared with the prior art, the present invention has the following advantages:

[0018] 1. The present invention arranges a first fixing device and a second fixing device on the workbench to form a double processing station, and arranges a turning mechanism on the machine tool body, so that the robot arm can move the workpiece blank to the first fixing device and process it into a semi-finished workpiece, and then can cooperate with the turning mechanism to turn the semi-finished workpiece over and then fix it to the second fixing device to be processed into a finished workpiece, thereby realizing the automation of the entire process and improving the processing continuity and processing efficiency.

[0019] 2. The present invention can fix the semi-finished workpiece to the second fixing device and then fix the workpiece blank to the first fixing device, so that the machine tool spindle can process the workpiece blank and the semi-finished workpiece at one time, reducing the shutdown frequency of the machine tool spindle, thereby improving the continuity of work and processing efficiency.

[0020] 3. The robot arm of the present invention adopts a dual holding mechanism setting and can switch between the two holding mechanisms, so that it can grab two workpieces at one time, further improving the loading and unloading efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a stereogram of the present invention;

[0022] Figure 2 It is a schematic diagram of the structure of the present invention;

[0023] Figure 3 It is a structural schematic diagram of the truss loading and unloading device;

[0024] Figure 4 It is a schematic diagram of the structure of the workbench;

[0025] Figure 5 is a schematic structural diagram of a first fixing device;

[0026] Figure 6 It is a schematic diagram of a workpiece blank and a workpiece semi-finished product fixed on a workbench;

[0027] Figure 7 It is a schematic diagram of the workpiece blank and the workpiece semi-finished product fixed on the workbench after processing;

[0028] Figure 8 yes Figure 2 A partial enlarged view of the middle A part;

[0029] Fig. 9 It is a structural schematic diagram of the flipping mechanism;

[0030] Fig.10 It is a schematic diagram of the structure of the robotic arm;

[0031] Fig.11 This is a schematic diagram of the structure of the main wheel of a compound bow;

[0032] Fig.12 is a schematic diagram of the structure of the mechanical arm in the second embodiment;

[0033] Fig.13 It is a schematic diagram of the structure of the clamping claw in the second embodiment.

[0034] In the figure, 1, machine tool body; 1a, loading and unloading area; 1b, processing area; 11, storage table; 12, processing spindle; 13, tool magazine; 14, workbench; 15, partition; 2, truss loading and unloading device; 21, truss beam; 22, moving seat; 23, mechanical arm; 24, connecting seat; 25, rotating seat; 26, first clamping mechanism; 261, first pneumatic finger; 262, clamping claw; 262a, connecting section; 262b, first claw; 22c, second claw; 27, second clamping mechanism; 4, first fixing device; 41, first fixing seat; 411, positioning protrusion; 41a, Through slot; 42, first fixing mechanism; 421, fixing block; 422, seat body; 422a, guide slot; 423, side slide block; 423a, slide slot; 424, inclined ejector rod; 425, driving member one; 5, second fixing device; 51, second fixing seat; 511, positioning pin; 52, second fixing mechanism; 521, mounting seat; 522, connecting rod; 523, buckle; 524, driving member two; 6, turning mechanism; 61, turning driving member; 62, second pneumatic finger; 63, claw; 63a, slot; 71, workpiece blank; 72, workpiece semi-finished product; 73, workpiece finished product. DETAILED DESCRIPTION

[0035] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0036] Embodiment 1

[0037] A fully automatic drilling and tapping machine for processing a compound bow main wheel is mainly used to process a square workpiece blank 71 into a compound bow main wheel, such as Figure 1 , Figure 2 As shown, it includes a machine tool body 1 and a truss loading and unloading device 2, wherein the machine tool body 1 includes a loading and unloading area 1a and a processing area 1b, the loading and unloading area 1a is provided with a storage table 11 for placing a workpiece blank 71 and a workpiece finished product 73 and a translation drive mechanism for driving the storage table 11 to translate in the Y-axis direction, the processing area 1b is provided with a workbench 14, a processing spindle 12 and a tool magazine 13, a multi-axis linkage can be formed between the processing spindle 12 and the workbench 14, and the workpiece blank 71 on the workbench 14 can be drilled, tapped, milled and other processing is performed, the truss loading and unloading device 2 includes a truss beam 21 arranged transversely along the X-axis above the loading and unloading area 1a and the processing area 1b, the truss beam 21 is provided with a mechanical arm 23 that can translate along the length direction of the truss beam 21 and rise and fall in the Z-axis direction, and a grasping mechanism is provided at the lower end of the mechanical arm 23, so that the mechanical arm 23 can grasp the workpiece blank 71 and the workpiece finished product 73 and reciprocate between the loading and unloading area 1a and the processing area 1b. In this embodiment, the workbench 14 adopts a double-station setting, that is, a first fixing device 4 for fixing the workpiece blank 71 and a second fixing device 5 for fixing the workpiece semi-finished product 72 are arranged at intervals on the workbench 14, and a turning mechanism 6 is also provided on the machine tool body 1, so that the workpiece blank 71 is transferred to the first fixing device 4 for processing into a semi-finished product, and then transferred to the turning mechanism 6 by the robot arm 23, so that the semi-finished workpiece 72 is turned upside down, and then transferred to the second fixing device 5 by the robot arm 23 for processing into a finished product, and finally transferred to the loading and unloading area 1a by the robot arm 23 for re-displacing, thereby realizing full-process automated processing.

[0038] Specifically, Figure 2 , Figure 3 As shown, a partition 15 is provided on the machine tool body 1 to separate the loading and unloading area 1a and the processing area 1b. A passage connecting the loading and unloading area 1a and the processing area 1b and an automatic door for opening and closing the passage are provided on the partition 15. The mechanical arm 23 of the truss loading and unloading device 2 can move back and forth between the loading and unloading area 1a and the processing area 1b through the passage. A moving seat 22 is provided on the truss beam 21 through the cooperation and sliding of the guide rail and the sliding seat. A gear rack transmission mechanism is provided between the moving seat 22 and the truss beam 21, so that the moving seat 22 can move back and forth along the length direction of the truss beam 21. The mechanical arm 23 is vertically provided and is slidably provided on the moving seat 22 through the cooperation and sliding of the guide rail and the sliding seat. A gear rack transmission mechanism is also provided between the mechanical arm 23 and the moving seat 22, which is used to drive the mechanical arm 23 to move up and down along the Z axis.

[0039] like Figure 3 , Fig.10As shown, the lower end of the robot arm 23 is fixedly connected to a connecting seat 24, and the connecting seat 24 has an inclined surface inclined relative to the length direction of the robot arm 23. A rotating seat 25 is rotatably connected to the inclined surface of the connecting seat 24, and a rotating driving member for driving the rotating seat 25 to rotate is also provided on the connecting seat 24, and the rotating driving member can be a cylinder or a motor; a first clamping mechanism 26 and a second clamping mechanism 27 are respectively provided on the two side walls of the rotating seat 25, wherein the first clamping mechanism 26 includes a first pneumatic finger 261, and the two clamping fingers of the first pneumatic finger 261 are fixedly connected with a clamping claw 262. Under the drive of the first pneumatic finger 261, the two clamping claws 262 can clamp and fix the two sides of the square workpiece blank 71 and the semi-finished workpiece 72; in this embodiment, the second clamping mechanism 27 adopts a pneumatic three-jaw chuck, and the pneumatic three-jaw chuck can grasp the finished workpiece 73 after processing by clamping the central axis of the finished workpiece 73. When in use, the rotating driving member can switch the first clamping mechanism 26 and the second clamping mechanism 27, so as to select the first clamping mechanism 26 or the second clamping mechanism 27 for grasping as needed.

[0040] like Figure 2 as well as Figures 4 to 7As shown, in this embodiment, the first fixing device 4 and the second fixing device 5 are both fixed on the workbench 14 and arranged at intervals, wherein the first fixing device 4 is used to fix the workpiece blank 71, and includes a first fixing seat 41 and a first fixing mechanism 42, wherein one side of the first fixing seat 41 has a positioning protrusion 411 protruding upward, and the first fixing mechanism 42 is located on the side of the first fixing seat 41 away from the positioning protrusion 411, and the first fixing mechanism 42 has a fixing block 421 that can move relative to the positioning protrusion 411. The first fixing mechanism 42 drives the fixing block 421 to approach or move away from the positioning protrusion 411, so that both sides of the workpiece blank 71 placed on the first fixing seat 41 can be fixed or unlocked, and the positioning protrusion 411 and the fixing block 421 are only slightly higher than the upper surface of the first fixing seat 41, so that most of the fixed workpiece blank 71 is exposed above the positioning protrusion 411 and the fixing block 421, which is convenient for the processing spindle 12 to process it. In this embodiment, the first fixing mechanism 42 includes a seat body 422, a side slider 423, a fixing block 421, an inclined push rod 424 and a driving member 425. The seat body 422 is a hollow structure with an opening at the bottom. A guide groove 422a is provided on the side wall of the seat body 422 adjacent to the first fixing seat 41. The guide groove 422a extends to the other side wall of the seat body 422 opposite to the side wall. The side slider 423 is embedded in the guide groove 422a and forms a sliding fit with the guide groove 422a. One end of the side slider 423 extends out of the guide groove 422a and is fixedly connected to the fixing block 421. A slide groove 423a is provided on the side slider 423. The inclined push rod 424 is located in the seat body 422. The inclined push rod 424 tilts from bottom to top in a direction away from the first fixing seat 41. , and one end of the inclined push rod 424 is embedded in the slide groove 423a and forms a sliding fit with the slide groove 423a, and the driving member 425 is fixedly arranged under the seat body 422, and is used to drive the inclined push rod 424 to move up and down. In this embodiment, the driving member 425 can adopt a cylinder or a hydraulic cylinder. In this way, when the driving member 425 drives the inclined push rod 424 to move upward, the inclined push rod 424 can drive the side slider 423 and the fixed block 421 fixed on the side slider 423 to move toward the side of the positioning protrusion 411 to achieve a clamping action; when the driving member 425 drives the inclined push rod 424 to move downward, the inclined push rod 424 can drive the side slider 423 and the fixed block 421 to move in a direction away from the positioning protrusion 411 to achieve an unlocking action, which is simple and reliable to execute. Preferably, in this embodiment, the inclination angle of the inclined push rod 424 relative to the vertical direction is between 8° and 15°, and the inclination angle of the slide groove 423a is consistent with the inclination angle of the inclined push rod 424. Within this angle range, the locking effect of the workpiece blank 71 can be guaranteed, and it is not easy to loosen during processing.Further, as a preference, in this embodiment, both sides of the inclined ejector rod 424 are in contact with the inner wall of the seat body 422 to form a sliding fit, so as to improve the moving accuracy of the inclined ejector rod 424, and the guide groove 422a is also inclined, and the guide groove 422a is inclined upward from the direction close to the first fixed seat 41 to the direction away from the first fixed seat 41, and the inclination angle is 4° to 8°, so as to further improve the locking effect and the reliability of the locking. Further, in this embodiment, a plurality of through grooves 41a are also formed on the upper surface of the first fixed seat 41, and the through grooves 41a are arranged along the length direction of the positioning protrusion 411 and are spaced apart from each other along the direction from the positioning protrusion 411 to the fixed block 421, and the arrangement of the through grooves 41a can facilitate both heat dissipation and chip removal.

[0041] like Figure 4 , Figure 6 As shown, the second fixing device 5 is used to fix the workpiece semi-finished product 72, including a second fixing seat 51 and a plurality of second fixing mechanisms 52 arranged at intervals around the second fixing seat 51, and the second fixing mechanisms 52 each include a mounting seat 521, a connecting rod 522, a buckle 523 and a second driving member 524. The mounting seat 521 is fixed on the workbench 14 and is located on one side of the second fixing seat 51. The two ends of the connecting rod 522 are respectively hinged to the mounting seat 521 and the buckle 523, so that the front end of the buckle 523 faces the second fixing seat 51. The second driving member 524 is a cylinder or a hydraulic cylinder. The driving member 524 is connected to the buckle 523 and is used to drive the buckle 523 to swing relative to the second fixing seat 51, so that the buckle 523 can buckle the edge of the workpiece semi-finished product 72 and fix the workpiece semi-finished product 72 on the second fixing seat 51. In this embodiment, a positioning pin 511 is further provided in the middle of the second fixing seat 51. The size of the positioning pin 511 is adapted to the size of the axial hole of the central axis of the main wheel of the compound bow. The positioning pin 511 can extend into the axial hole of the central axis of the main wheel of the semi-finished compound bow and position it, thereby improving its processing accuracy.

[0042] like Figure 2 , Figure 8 and Fig. 9 As shown, in this embodiment, the flipping mechanism 6 is arranged on the partition 15, and includes a flipping drive member 61 and a second pneumatic finger 62, wherein the flipping drive member 61 can be a motor or a rotary cylinder, the flipping drive member 61 is horizontally arranged and fixed relative to the partition 15, the flipping drive member 61 is connected to the second pneumatic finger 62 and can drive the second pneumatic finger 62 to rotate 180°, and the two clamping fingers of the second pneumatic finger 62 are fixedly connected with claws 63, and the inner sides of the two claws 63 are provided with a groove 63a for the edge of the semi-finished workpiece 72 to be embedded, so that after the robot arm 23 grabs the semi-finished workpiece 72 to the flipping mechanism 6, the two claws 63 can clamp the semi-finished workpiece 72 and flip it 180° through the flipping drive member 61, and then the robot arm 23 re-grabs it and moves it to the second fixing device 5 for fixation.

[0043] The working process of the present invention is as follows: when the present invention works for the first time, both workstations of the workbench 14 are empty, and the robot arm 23 first grabs a workpiece blank 71 from the storage table 11 through the first clamping mechanism 26 and fixes it on the first fixing device 4 of the workbench 14, and then the upper side of the workpiece blank 71 is processed by the processing spindle 12 to form a semi-finished workpiece 72, and then the robot arm 23 moves the semi-finished workpiece 72 to the flipping mechanism 6 to flip it 180°, and then moves it to the second fixing device 5 to fix it, and re-grabs a workpiece blank 71 to fix it on the first fixing device 4, and then the processing spindle 12 processes the workpiece blank 71 on the first fixing device 4 and the semi-finished workpiece 72 on the second fixing device 5 at one time. Afterwards, the robot arm 23 first grabs the semi-finished workpiece 72 through the first clamping mechanism 26 and flips it over to the flipping mechanism 6, then grabs the flipped semi-finished workpiece 72 and moves it above the second fixing device 5, the robot arm 23 switches to the second clamping mechanism 27 to take out the finished workpiece 73, and then switches to the first clamping mechanism 26 to fix the semi-finished workpiece 72 on the second fixing device 5, and then moves the finished workpiece 73 to the storage table 11 and re-grabs a workpiece blank 71 to fix it on the first fixing device 4, thus forming a working cycle.

[0044] Embodiment 2

[0045] The technical solution of this embodiment is basically the same as that of the first embodiment, except that Fig.12 , Fig.13 As shown, in this embodiment, the first clamping mechanism 26 and the second clamping mechanism 27 arranged below the robot arm 23 have the same structure, both include a first pneumatic finger 261, and the two clamping fingers of the first pneumatic finger 261 are fixedly connected with a clamping claw 262, and the clamping claw 262 includes a connecting section 262a in the shape of a long rod and arranged horizontally, and a first claw portion 262b located at the outer end of the connecting section 262a and a second claw portion 22c located at the inner end of the connecting section 262a, respectively, the connecting section 262a is fixedly connected to the clamping fingers of the first pneumatic finger 261 by bolts, the first claw portion 262b is in the shape of two separated fingers, and the two first claw portions 262b cooperate to clamp the two outer edges of the unprocessed part of the workpiece blank 71 or the semi-finished workpiece 72; the second claw portion 22c is in the shape of an inwardly concave arc, and the two second claw portions 22c cooperate to clamp the central axis of the semi-finished workpiece 72 or the finished workpiece 73. In this embodiment, the first claw portion 262b and the second claw portion 22c both extend downward, and the length of the first claw portion 262b extending downward is greater than the length of the second claw portion 22c extending downward, so that the second claw portion 22c can avoid the first claw portion 262b and avoid interference with the first claw portion 262b. In this way, in this embodiment, the two holding mechanisms on the robot arm 23 can clamp the workpiece blank 71, the workpiece semi-finished product 72, and the workpiece finished product 73, thereby reducing the switching frequency of the robot arm 23 and further improving the work efficiency of loading and unloading the robot arm 23.

[0046] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

[0047] Although the terms such as machine tool spindle, loading and unloading area 1a, processing area 1b, storage table 11, processing spindle 12, tool magazine 13, workbench 14, truss beam 21, and robot arm 23 are used more frequently in this article, the possibility of using other terms is not excluded. These terms are used only to more conveniently describe and explain the essence of the present invention; interpreting them as any additional limitation is contrary to the spirit of the present invention.

Claims

1. A fully automatic drilling and tapping machine for processing a main wheel of a compound bow, comprising a machine tool body (1) and a truss loading and unloading device (2), wherein the machine tool body (1) comprises a loading and unloading area (1a) and a processing area (1b), wherein a workbench (14) is provided in the processing area (1b), and the truss loading and unloading device (2) comprises a mechanical arm (23) movable between the loading and unloading area (1a) and the processing area (1b), characterized in that: The workbench (14) is provided with a first fixing device (4) for fixing a workpiece blank (71) and a second fixing device (5) for fixing a workpiece semi-finished product (72); the machine tool body (1) is also provided with a turning mechanism (6) for turning over the workpiece semi-finished product (72); the mechanical arm (23) can move the workpiece semi-finished product (72) to the turning mechanism (6) for turning over, and then move it to the second fixing device (5) for fixing.

2. The fully automatic tapping and drilling machine for compound bow main wheel processing according to claim 1, characterized in that: The first fixing device (4) comprises a first fixing seat (41) and a first fixing mechanism (42); one side of the first fixing seat (41) is provided with a positioning protrusion (411) protruding upward; the first fixing mechanism (42) has a fixing block (421); the fixing block (421) is located on a side of the first fixing seat (41) away from the positioning protrusion (411) and opposite to the positioning protrusion (411); the first fixing mechanism (42) is capable of driving the fixing block (421) to move closer to or away from the positioning protrusion (411).

3. The fully automatic tapping and drilling machine for compound bow main wheel processing according to claim 2, characterized in that: The first fixing mechanism (42) further comprises a seat body (422), a side slider (423), an inclined push rod (424) and a driving member (425); the seat body (422) is hollow inside and fixedly arranged on one side of the first fixing seat (41); a guide groove (422a) is formed on a side of the seat body (422) close to the first fixing seat (41); the side slider (423) is slidably arranged in the guide groove (422a); one end of the side slider (423) extends out of the guide groove (422a) and is fixedly connected to the fixed block (421), a slide groove (423a) is opened on the side slider (423), the inclined push rod (424) is located in the seat body (422) and is inclined from bottom to top in a direction away from the first fixed seat (41), one end of the inclined push rod (424) is embedded in the slide groove (423a) and slidably cooperates with the slide groove (423a), and the driving member (425) is connected to the inclined push rod (424) and is used to drive the inclined push rod (424) to move up and down.

4. The fully automatic tapping and drilling machine for compound bow main wheel processing according to claim 3, characterized in that: The inclination angle of the inclined push rod (424) relative to the vertical direction is between 8° and 15°, and the inclination angle of the slide groove (423a) is consistent with the inclination angle of the inclined push rod (424).

5. The fully automatic tapping and drilling machine for compound bow main wheel processing according to claim 4, characterized in that: The guide groove (422a) is inclined upward in a direction from close to the first fixing seat (41) to away from the first fixing seat (41), and the inclination angle is 4° to 8°.

6. The fully automatic tapping and drilling machine for compound bow main wheel processing according to claim 2, 3 or 4, characterized in that: A plurality of through slots (41a) are also formed on the upper surface of the first fixing seat (41), and the through slots (41a) are distributed at intervals along the direction from the positioning protrusion (411) to the fixing block (421).

7. The fully automatic tapping and drilling machine for compound bow main wheel processing according to claim 2, characterized in that: The second fixing device (5) comprises a second fixing seat (51) and a plurality of second fixing mechanisms (52) arranged at intervals around the second fixing seat (51); the second fixing mechanisms (52) each comprise a mounting seat (521), a connecting rod (522), a buckle (523) and a second driving member (524); the mounting seat (521) is fixed on the workbench (14); the two ends of the connecting rod (522) are respectively hinged to the mounting seat (521) and the buckle (523); the second driving member (524) is connected to the buckle (523) and is used to drive the buckle (523) to swing relative to the second fixing seat (51); a positioning pin (511) is also provided in the middle of the second fixing seat (51).

8. The fully automatic tapping and drilling machine for compound bow main wheel processing according to claim 1 or 2, characterized in that: The lower end of the mechanical arm (23) is fixedly connected to a connecting seat (24), and a rotating seat (25) is provided on the connecting seat (24). A first clamping mechanism (26) for clamping a workpiece blank (71) and a workpiece semi-finished product (72) and a second clamping mechanism (27) for clamping a workpiece finished product (73) are respectively provided on the rotating seat (25). The connecting seat (24) is also provided with a rotating driving member for driving the rotating seat (25) to rotate and switching the first clamping mechanism (26) and the second clamping mechanism (27).

9. The fully automatic tapping and drilling machine for processing the main wheel of the bow according to claim 8, characterized in that: The first clamping mechanism (26) comprises a first pneumatic finger (261), both clamping fingers of the first pneumatic finger (261) are fixedly connected with clamping claws (262), and the second clamping mechanism (27) is a pneumatic three-jaw chuck.

10. The fully automatic tapping and drilling machine for compound bow main wheel processing according to claim 1 or 2, characterized in that: The first clamping mechanism (26) and the second clamping mechanism (27) have the same structure and both include a first pneumatic finger (261). Both clamping fingers of the first pneumatic finger (261) are fixedly connected with a clamping claw (262). The clamping claw (262) includes a transversely arranged connecting section (262a) and a first claw portion (262b) located at the outer end of the connecting section (262a) and a second claw portion (22c) located at the inner end of the connecting section (262a). The first claw portion (262b) and the second claw portion (22c) both extend downward and the downward extension length of the first claw portion (262b) is greater than the downward extension length of the second claw portion (22c).

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