Automatic machining production line for knife handle

Abstract

An automatic machining production line for a knife handle comprises a first numerical control machine tool, a second numerical control machine tool, a third numerical control machine tool, blind rivet loading and unloading equipment and a mechanical arm, the first numerical control machine tool is used for machining the end face, an inner hole, an outer circle face and a V-shaped groove of the knife handle, and the second numerical control machine tool is used for machining a conical hole and an inner threaded hole of the knife handle. The third numerical control machine tool is used for machining a driving groove, a locking threaded hole and an end face inner hole of the cutter handle, the blind rivet assembling and disassembling device is used for assembling or disassembling a blind rivet on the cutter handle, and the mechanical arm is used for grabbing the cutter handle. And waste products generated in production and processing can be detected.

Description

TECHNICAL FIELD

[0001] The utility model relates to automatic production of tool holder, concretely relates to automatic processing production line of tool holder. BACKGROUND

[0002] Numerical control machine tool is usually composed of machine tool body, numerical control system, servo drive, auxiliary device etc., and the tool holder is part of the machine tool accessories, used for fixing the tool, ensuring its stability and precision in the machining process, the commonly used tool holder has BT or ISO tool holder, the traditional tool holder manufacturing process depends on manual operation or semi-automatic equipment to complete, each processing procedure is scattered and independent, lacks systematic integration, needs frequent manual feeding, reloading and workpiece transfer in the production process, resulting in low production efficiency, multiple clamping is easy to introduce positioning error, influences tool holder machining precision, manual operation is easy to make mistakes, reduces product qualification rate, and it is difficult to meet the production demand of large-scale and high-precision tool holder. SUMMARY

[0003] In order to solve the defects of low production efficiency and low machining precision caused by manual processing and semi-automatic processing of the prior art, the utility model provides tool holder automatic processing production line.

[0004] The technical scheme of the utility model is: tool holder automatic processing line, including first numerical control machine tool, second numerical control machine tool, third numerical control machine tool, draw peg loading and unloading equipment and mechanical arm;

[0005] The first numerical control machine tool and the second numerical control machine tool are arranged opposite to each other, the third numerical control machine tool and the draw peg loading and unloading equipment are arranged opposite to each other, and the mechanical arm is arranged in the central space formed by the first numerical control machine tool, the second numerical control machine tool, the third numerical control machine tool and the draw peg loading and unloading equipment.

[0006] The first numerical control machine tool is used for machining the end face, inner hole, outer cylindrical surface and V-shaped groove of the tool holder.

[0007] The second numerical control machine tool is used for machining the taper and inner threaded hole of the tool holder.

[0008] The third numerical control machine tool is used for machining the driving groove, locking threaded hole and end face inner hole of the tool holder.

[0009] The draw peg loading and unloading equipment is used for installing or dismounting the draw peg on the tool holder.

[0010] The mechanical arm is used for grabbing the tool holder.

[0011] The puller mounting and dismounting device comprises a first main shaft system arranged vertically, a positioning chuck capable of clamping a tool shank arranged horizontally, a puller seat and a first sliding table for placing the puller, the lower end of the first main shaft system is connected with a lock head capable of grabbing the puller, a clamping groove for the puller to enter is arranged in the lock head, a spring ball capable of clamping the puller is arranged in the clamping groove, and the first sliding table is horizontally arranged above the puller seat and the positioning chuck, and the first main shaft system is slidingly connected with the first sliding table and can move horizontally.

[0012] Preferably, the third numerical control machine tool comprises a first machining seat arranged horizontally, a second machining seat arranged vertically, a second main shaft system arranged vertically and a second sliding table, the second main shaft system is slidingly connected with the second sliding table and can move up and down, the second main shaft system cooperates with the first machining seat to machine a driving groove and a locking threaded hole of the tool shank, the second main shaft system cooperates with the second machining seat to machine an end face inner hole of the tool shank, a tool changing manipulator and a tool magazine for changing tools on the second main shaft system are further arranged on the upper part of the third numerical control machine tool, and the first machining seat and the second machining seat are slidingly connected with a third sliding table.

[0013] Preferably, the puller mounting and dismounting device further comprises an NG material channel for storing damaged pullers and tool shanks.

[0014] Preferably, the lower end of the first main shaft system is further provided with a blowing cleaning device and a puller detection device for detecting whether the puller is installed on the tool shank.

[0015] Preferably, the first machining seat and the second machining seat each comprise a conical groove for positioning a conical handle of the tool shank, a cavity communicating with the conical groove is arranged at the bottom of each conical groove, and a clamping piece capable of clamping the puller is arranged in each cavity.

[0016] Preferably, the mechanical arm comprises a rotary table, two-finger clamping jaws, long three-finger clamping jaws and short three-finger clamping jaws are respectively arranged on the end face of the rotary table, the two-finger clamping jaws are used for radially clamping the tool shank, and the long three-finger clamping jaws and the short three-finger clamping jaws are used for axially clamping the tool shank.

[0017] Preferably, the seat ring for cooperating with the mechanical arm to overturn the tool shank and the conversion material table for storing the tool shanks are further included.

[0018] Preferably, the blank material table for storing the tool shank blanks and the finished product material table for storing the finished tool shanks are further included.

[0019] The puller mounting and dismounting device has the advantages that the tool shank can be automatically produced and machined without manual operation, the production efficiency is improved, the machining precision is high, the tool shank machining demand of different specifications can be met, and the waste products generated in the production and machining can be detected. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 This is a schematic diagram of an automated tool holder manufacturing production line.

[0021] Figure 2 This is a schematic diagram of the rivet loading and unloading equipment.

[0022] Figure 3 This is a schematic diagram of the first spindle system structure;

[0023] Figure 4 This is a schematic diagram of the third CNC machine tool.

[0024] Figure 5 Schematic diagrams of the first and second machining seats;

[0025] Figure 6 This is a schematic diagram of the robotic arm's gripping mechanism.

[0026] Figure 7 These are schematic diagrams of the first and second CNC machine tools.

[0027] Figure 8 A schematic diagram of the workpiece structure after machining by the first CNC machine tool;

[0028] Figure 9 A schematic diagram of the workpiece structure after machining by the second CNC machine tool;

[0029] Figure 10 A schematic diagram of the workpiece structure after it has been machined by the third CNC machine tool. Detailed Implementation

[0030] To better understand the concept of this utility model, the technical solution of this utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0031] The technical solution of this utility model is as follows: an automated machining production line for tool holders, such as... Figure 1 As shown, it includes a first CNC machine tool 1, a second CNC machine tool 2, a third CNC machine tool 3, a rivet loading and unloading device 4, and a robotic arm 5;

[0032] according to Figure 1 The first CNC machine tool 1 and the second CNC machine tool 2 are arranged opposite each other from left to right, the third CNC machine tool 3 and the rivet loading and unloading equipment 4 are arranged opposite each other from front to back, and the robotic arm 5 is arranged in the center of the space enclosed by the first CNC machine tool 1, the second CNC machine tool 2, the third CNC machine tool 3 and the rivet loading and unloading equipment 4.

[0033] The first CNC machine tool 1 is used to machine the end face A1, inner hole A2, outer cylindrical surface A3, and V-groove A4 of the tool holder. The workpiece machined by the first CNC machine tool 1 is as follows: Figure 8 As shown;

[0034] The second CNC machine tool 2 is used for machining the taper A5 and the internal threaded hole A6 of the tool shank. The workpiece machined by the second CNC machine tool 2 is as shown in Figure 9

[0035] The third CNC machine tool 3 is used for machining the driving groove A7, the locking threaded hole A8 and the end face internal hole A9 of the tool shank. The workpiece machined by the third CNC machine tool 3 is as shown in Figure 10

[0036] The pull pin mounting and dismounting device 4 is used for mounting or dismounting the pull pin on the tool shank.

[0037] The mechanical arm 5 is used for grabbing the tool shank.

[0038] The third CNC machine tool machines the driving groove, the locking threaded hole and the end face internal hole of the tool shank. The driving groove, the locking threaded hole and the end face internal hole are arranged at the straight shank and the middle part of the tool shank. Therefore, only one end of the taper shank of the tool shank can be fixed. However, the taper shank is a taper surface and cannot be fixed. The pull pin can be mounted on the tool shank. The pull pin is pulled tightly to fix the tool shank. The taper surface is used as a positioning surface. The machining of the driving groove, the locking threaded hole and the end face internal hole of the tool shank is completed. Therefore, the automatic machining production line is additionally provided with a pull pin mounting and dismounting device as shown in Figure 2 The pull pin mounting and dismounting device 4 includes a first spindle system 4-1 arranged vertically, a positioning chuck 4-2 capable of clamping the tool shank arranged horizontally, a pull pin seat 4-3 for placing the pull pin and a first sliding table 4-4. The lower end of the first spindle system 4-1 is connected with a lock head 4-5 capable of grabbing the pull pin. In order to prevent the lock head from forcibly grabbing the pull pin and causing damage to the pull pin, the lock head is connected with the first spindle system through a spring as shown in Figure 3 A clamping groove 4-6 for the pull pin is arranged in the lock head 4-5. A spring wave bead 4-7 capable of clamping the pull pin is arranged in the clamping groove 4-6 as shown in Figure 2 The first sliding table 4-4 is horizontally arranged above the pull pin seat 4-3 and the positioning chuck 4-2. The first spindle system 4-1 is slidingly connected with the first sliding table 4-4 and can move horizontally.

[0039] When the pull pin mounting and dismounting device mounts the pull pin, the pull pin is clamped in the lock head. The first spindle system drives the lock head with the pull pin to move towards the tool shank. After the tool shank pre-pull pin contacts, the first spindle system rotates the lock head to tighten the pull pin on the tool shank. The first spindle system drives the pull pin to move away from the tool shank. The pull pin is separated from the lock head by the elasticity of the spring wave bead.

[0040] When the pull pin mounting and dismounting device dismounts the pull pin, the first spindle system drives the lock head with the pull pin to move towards the tool shank until the spring wave bead in the lock head clamps the pull pin. The first spindle system drives the lock head to rotate to dismount the pull pin from the tool shank.

[0041] As shown in Figure 4 ​​As shown, the third CNC machine tool 3 is a vertical machining center, the driving groove and locking threaded hole of the tool shank are on the outer side surface of the tool shank, and the end surface inner hole of the tool shank is on the end surface of the tool shank. Because the machining surfaces are different, the tool shank position needs to be adjusted after the driving groove and locking threaded hole of the tool shank are machined, and then the end surface inner hole of the tool shank can be machined. Therefore, the third CNC machine tool 3 includes a horizontally arranged first machining seat 3-1, a vertically arranged second machining seat 3-2, a vertically arranged second spindle system 3-3, and a second sliding table 3-4. The second spindle system 3-3 is slidably connected to the second sliding table 3-4 and can move up and down. The driving groove and locking threaded hole of the tool shank are machined by cooperation of the second spindle system 3-3 and the first machining seat 3-1, and the end surface inner hole of the tool shank is machined by cooperation of the second spindle system 3-3 and the second machining seat 3-2. Because different positions of the tool shank require different tools, a tool changing robot 3-5 and a tool magazine 3-6 are further arranged on the upper part of the third CNC machine tool 3 for changing tools on the second spindle system. When changing tools, the tool changing robot rotates to the tool magazine to grab the required tool, the tool changing robot clamps the second spindle system to change the tool on the second spindle system, the tool changing robot is rotated to make the tool changed from the second spindle system into the tool magazine, the required tool is grabbed from the tool magazine and installed on the second spindle system, and after the tool changing is completed, the second sliding table drives the second spindle system to move downward, the second spindle system moves toward the first machining seat and the second machining seat, and the second spindle system machines the driving groove, the locking threaded hole, and the end surface inner hole of the tool shank. In order to cooperate with the second spindle system to machine the tool shank, a third sliding table 3-7 is further included, and the first machining seat and the second machining seat are slidably arranged on the third sliding table 3-7. When the driving groove and the locking threaded hole of the tool shank are machined, the third sliding table drives the first machining seat to slide below the second spindle system, and when the end surface inner hole of the tool shank is machined, the third sliding table drives the second machining seat to slide below the second spindle system.

[0042] During the production and machining process, damaged tool shanks and draw bars may occur. Therefore, as shown in Figure 2 the draw bar mounting and dismounting device 4 further includes an NG material channel 4-10 for storing damaged draw bars and tool shanks.

[0043] As shown in Figure 3 the lower end of the first spindle system 4-1 is further provided with a blowing cleaning device 4-8 and a draw bar detection device 4-9 for detecting whether the draw bar is installed on the tool shank. The blowing cleaning device adopts a fan and an air nozzle structure, and is used for cleaning iron filings in the inner threaded hole of the just machined draw bar. The draw bar detection device includes a travel switch and an air cylinder, and the travel switch detects whether the draw bar is installed on the tool shank according to the travel of the piston rod of the air cylinder.

[0044] As shown in Figure 5As shown, both the first machining base 3-1 and the second machining base 3-2 include a tapered groove 3-8 for positioning the tapered shank of the tool holder. When the robotic arm inserts the tool holder, the tapered shank and the tapered groove cooperate to position the tool holder. At the bottom of each tapered groove 3-8, there is a cavity 3-9 communicating with the tapered groove 3-8. In each cavity 3-9, there is a clamping member 3-10 that can clamp the pull stud. The clamping member 3-10 includes a clamping petal 3-10-1 and a pull rod 3-10-2. The pull rod pulls the clamping petal to retract and clamp the pull stud. The pull rod pushes the clamping petal to extend and release the pull stud. The pull rod is driven by a cylinder or a hydraulic cylinder.

[0045] Because the tool holder needs to be gripped and placed in different locations during the manufacturing process, and the gripping position and direction vary each time, using only one type of gripper will lead to gripping failure and the tool holder falling out. Figure 6 As shown, the robotic arm 5 includes a turntable 5-1. On the end face of the turntable 5-1, there are two-finger grippers 5-2, long three-finger grippers 5-3 and short three-finger grippers 5-4 respectively. The two-finger grippers 5-2 are used to radially grip the tool holder, and the long three-finger grippers 5-3 and short three-finger grippers 5-4 are used to axially grip the tool holder. The above gripper structure can also be used to process tool holders of different specifications.

[0046] The robotic arm 5 needs to switch between different grippers when grasping, such as in the processing production line. Figure 1 The diagram also includes a seat ring 9 for cooperating with the robotic arm 5 to flip the tool holder, and a transfer table 10 for storing the tool holder. The tool holders processed by the first machine tool and the second machine tool are in different positions, so after processing on the first machine tool, the tool holder needs to be flipped. The two-finger gripper puts the end of the tool holder with the LASIK into the seat ring, and the robotic arm uses a three-finger gripper to grab the tool holder, completing the flipping of the tool holder. When multiple tool holders need to be processed continuously, after the robotic arm grabs one tool holder and enters the next process, the robotic arm places the tool holder to be processed on the transfer table. After the tool holder in the process is processed, the robotic arm takes out the tool holder from the process and puts it into the next process, and then puts the tool holder on the transfer table, thereby realizing continuous processing of tool holders.

[0047] like Figure 1 The diagram also includes a blank material platform 11 for storing tool holder blanks and a finished product material platform 12 for storing finished tool holders.

[0048] The first numerical control machine tool 1 and the second numerical control machine tool 2 are horizontal numerical control machine tools of the same model, and the first numerical control machine tool 1 and the second numerical control machine tool 2 both comprise a tool holder 10 and a third spindle system 11, each third spindle system 11 is connected with a clamping chuck 12 capable of clamping a tool shank, and further comprises a fourth sliding table for driving the tool holder 10 to move towards the third spindle system 11, each tool holder 10 is provided with a tool corresponding to the tool shank to be machined, the clamping chuck 8 clamps the tool shank, the fourth sliding table drives the tool holder 10 to move towards the tool shank, and when the tool on the tool holder 10 contacts the tool shank, the third spindle system drives the tool shank to rotate, so as to machine the machined surface of the tool shank.

[0049] The automatic tool shank machining production line specifically processes as follows:

[0050] S1: the short three-fingered gripper of the mechanical arm picks up the tool shank blank from the blank table, places it into the first numerical control machine tool, and processes the end face A1, the inner hole A2, the outer cylindrical surface A3 and the V-shaped groove A4 of the tool shank through the first numerical control machine tool, and the machined workpiece is as shown in Figure 8 ;

[0051] S2: the two-fingered gripper of the mechanical arm takes out the tool shank processed in S1 from the first numerical control machine tool and places it on the seat ring, the short three-fingered gripper of the mechanical arm picks up the tool shank from the seat ring and places it into the second numerical control machine tool, and processes the taper A5 and the inner threaded hole A6 of the tool shank through the second numerical control machine tool, and the machined workpiece is as shown in Figure 9 ;

[0052] S3: the short three-fingered gripper of the mechanical arm takes out the tool shank processed in S2 from the second numerical control machine tool and places it into the pull pin mounting and demounting equipment, clamps the tool shank through the positioning chuck, then the first spindle system drives the lock head to move downward to pick up the pull pin from the pull pin seat, the first sliding table drives the first spindle system to move the pull pin to a position directly above the tool shank, and the air blowing cleaning device blows air into the inner threaded hole of the tool shank to clean the iron filings;

[0053] S4: when the pull pin detection device detects that there is no pull pin installed on the tool shank, the first spindle system drives the lock head to move downward, and when the pull pin enters the inner threaded hole of the tool shank, the first spindle system drives the lock head to rotate to tighten the pull pin on the tool shank;

[0054] S5: the pull pin detection device detects whether the pull pin has been installed on the tool shank, when no pull pin is detected to be installed on the tool shank, step S4 is entered, when it is detected that the pull pin has been installed on the tool shank, step S6 is entered, and when no pull pin is detected to be installed on the tool shank for the second time, step S9 is entered;

[0055] S6: the mechanical arm switches the long three-fingered gripper to take out the shank with the draw pin from the draw pin mounting and dismounting device and place it on the conversion table, and the mechanical arm uses the two-fingered gripper to grab the shank from the conversion table and place it in the first machining seat of the third numerical control machine tool, the third numerical control machine tool machines the driving groove, locking threaded hole and end face inner hole of the shank, the second spindle system cooperates with the first machining position to machine the driving groove A7 and locking threaded hole A8 of the shank, after the machining is completed, the two-fingered gripper of the mechanical arm takes out the shank from the first machining seat and places it in the second machining seat, the second spindle system cooperates with the second machining position to machine the end face inner hole A9 of the shank, and the machined workpiece is as shown in Figure 10

[0056] S7: the two-fingered gripper of the mechanical arm takes out the shank machined in S6 from the third numerical control machine tool and places it on the conversion table, the long three-fingered gripper of the mechanical arm grabs and places it in the draw pin mounting and dismounting device from the conversion table, the shank is clamped by the positioning chuck, the first spindle system drives the lock head to move downwards, the draw pin is clamped by the lock head, and then the first spindle system drives the lock head to rotate reversely to dismount the draw pin from the shank;

[0057] S8: after the draw pin detection device detects that there is no draw pin on the shank, the long three-fingered gripper of the mechanical arm takes away the shank product and places it in the finished product table, and when the draw pin detection device detects that the draw pin has not been dismounted from the shank, step S9 is entered;

[0058] S9: the mechanical arm sends the damaged draw pin and shank into the NG material channel.

[0059] The above merely describes preferred embodiments of the present application, and is not used to limit the protection scope of the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application is included in the protection scope of the present application.​

Claims

1. Automatic machining production line of shank, characterized in that: The first CNC machine tool (1), the second CNC machine tool (2), the third CNC machine tool (3), the pull pin loading and unloading device (4) and the mechanical arm (5); The first CNC machine tool (1) and the second CNC machine tool (2) are arranged opposite to each other, the third CNC machine tool (3) and the pull pin loading and unloading device (4) are arranged opposite to each other, and the mechanical arm (5) is arranged in the center of a space enclosed by the first CNC machine tool (1), the second CNC machine tool (2), the third CNC machine tool (3) and the pull pin loading and unloading device (4). The first CNC machine tool (1) is used for machining the end face, the inner hole, the outer circular face and the V-shaped groove of the tool handle. The second CNC machine tool (2) is used for machining the taper and the inner threaded hole of the tool handle. The third CNC machine tool (3) is used for machining the driving groove, the locking threaded hole and the end face inner hole of the tool handle. The pull pin loading and unloading device (4) is used for installing or uninstalling the pull pin on the tool handle. The mechanical arm (5) is used for grabbing the tool handle. The pull pin loading and unloading device (4) comprises a first spindle system (4-1) arranged vertically, a positioning chuck (4-2) capable of clamping the tool handle arranged horizontally, a pull pin seat (4-3) and a first sliding table (4-4) for placing the pull pin, a lock head (4-5) capable of grabbing the pull pin connected to the lower end of the first spindle system (4-1), a clamping groove (4-6) for the pull pin in the lock head (4-5), and a spring ball (4-7) capable of clamping the pull pin in the clamping groove (4-6), wherein the first sliding table (4-4) is arranged horizontally above the pull pin seat (4-3) and the positioning chuck (4-2), and the first spindle system (4-1) is slidably connected to the first sliding table (4-4) and can move horizontally.

2. The automatic handle machining production line according to claim 1, characterized in that: The third CNC machine tool (3) comprises a first machining seat (3-1) arranged horizontally, a second machining seat (3-2) arranged vertically, a second spindle system (3-3) arranged vertically and a second sliding table (3-4), wherein the second spindle system (3-3) is slidably connected to the second sliding table (3-4) and can move up and down, the driving groove and the locking threaded hole of the tool handle are machined by the cooperation of the second spindle system (3-3) and the first machining seat (3-1), the end face inner hole of the tool handle is machined by the cooperation of the second spindle system (3-3) and the second machining seat (3-2), a tool changing robot (3-5) and a tool magazine (3-6) for replacing the tool on the second spindle system (3-3) are arranged on the upper part of the third CNC machine tool (3), and the first machining seat (3-1) and the second machining seat (3-2) are slidably connected to a third sliding table (3-7).

3. The automatic handle machining production line according to claim 1, characterized in that: The pull pin loading and unloading device (4) further comprises an NG material channel (4-10) for storing damaged pull pins and tool handles.

4. The automatic handle machining production line according to claim 1, characterized in that: A blowing cleaning device (4-8) and a pull pin detection device (4-9) for detecting whether the pull pin is installed on the tool handle are arranged at the lower end of the first spindle system (4-1).

5. The automatic handle machining production line according to claim 2, characterized in that: The first machining seat (3-1) and the second machining seat (3-2) each comprise a conical groove (3-8) for positioning a tool holder taper shank, a cavity (3-9) communicating with the conical groove (3-8) is arranged at the bottom of each conical groove (3-8), and a clamping member (3-10) capable of clamping a pull pin is arranged in each cavity (3-9).

6. The automatic handle machining production line according to claim 1, characterized in that: The mechanical arm (5) comprises a rotary table (5-1), two finger clamps (5-2), a long three-finger clamp (5-3) and a short three-finger clamp (5-4) are respectively arranged on the end face of the rotary table (5-1), the two finger clamps (5-2) are used for radially clamping a tool holder, and the long three-finger clamp (5-3) and the short three-finger clamp (5-4) are used for axially clamping a tool holder.

7. The automatic handle machining production line according to claim 6, characterized in that: Further comprising a seat ring (6) for cooperating with the mechanical arm (5) to overturn the tool holder, and a conversion material table (7) for storing the tool holder.

8. The automatic handle machining production line according to claim 6, characterized in that: Further comprising a blank material table (8) for storing a tool holder blank and a finished product material table (9) for storing a finished tool holder.

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