Zero point positioning device for turning and milling automatic production line

Abstract

The invention relates to a zero-point positioning device for an automatic turning and milling production line, and belongs to the technical field of production equipment. The device comprises a tray, a base and a robot adapter plate. The tray comprises a tray body, a balancing weight, a zero point blind rivet and a female cone ring, the base comprises a base body, a zero point positioning chuck and a male cone ring, and the robot adapter plate comprises a robot adapter plate body, a high-frequency data carrier, a robot blind rivet, a diamond pin and a round pin. And the machining precision and the production efficiency are improved.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of production equipment, and particularly relates to a zero point positioning device for a turning and milling machining automation production line. BACKGROUND

[0002] The zero point positioning device is generally in the form of cooperation between a two-pin on one side of the bottom zero pin of a tray and a zero chuck, so as to realize rapid positioning and locking of the tray. The device saves a large amount of repositioning time after replacement, and simultaneously realizes machining and clamping simultaneously by moving most of the downtime work outside the machine tool, so that the machine tool downtime is significantly reduced, and the machining efficiency is improved.

[0003] The existing machining automation production line using the zero point positioning device is generally a machining center production line, and the repeated positioning precision is high. In chapter 3 of the "Research on Non-stop Technology of Turn-milling Compound Machining Center Continuous Production Line", an off-machine clamping device is designed to realize the same coordinate system of turning and milling and clamping stations, and to realize rapid switching. However, the radial precision of the actual designed zero point positioning device completely depends on four zero chucks and draw pins. When clamping a large-size rotary workpiece 13, it is easy to cause the reference to be unable to be transmitted, the workpiece 13 rotary center and the machine tool center line deviation is large, and the machining precision is significantly reduced, which affects the production qualified rate. SUMMARY

[0004] (I) Technical problem to be solved

[0005] The technical problem to be solved by the application is how to provide a zero point positioning device for a turning and milling machining automation production line, so as to solve the problem of one-time clamping and positioning, realize the consistency of zero points in the transfer process between different turning and milling devices, and improve the machining precision and production efficiency.

[0006] (II) Technical scheme

[0007] In order to solve the above technical problems, the application provides a zero point positioning device for a turning and milling machining automation production line, which comprises: a tray, a base, and a robot adapter plate.

[0008] The tray comprises: a tray body 1, a counterweight 2, a zero draw pin 4, and a female taper ring 3.

[0009] The robot adapter plate comprises: a rhombic pin 9, a robot adapter plate body 6, a high-frequency data carrier 5, a robot draw pin 7, and a circular pin 8.

[0010] The base comprises: a base body 11, a zero chuck 10, and a male taper ring 12.

[0011] The tray body 1 is a column structure, and a robot adapter plate body 6 and two counterweights 2 are arranged on the outer edge of the bottom surface of the tray body 1 in a spaced manner. A female taper ring 3 is arranged at the center of the lower side surface of the tray body 1, and a zero-point drawbar 4 is arranged near the female taper ring 3. The top surface of the tray body 1 is used for mounting different part fixtures 14.

[0012] A male taper ring 12 is arranged at the center of the top surface of the base body 11, and a zero-point chuck 10 is arranged near the male taper ring 12. The bottom surface of the base body 11 is fixed on a workbench.

[0013] The base body 11 is internally provided with a zero-point chuck 10 loosening gas path and a center hole blowing gas path. The zero-point chuck 10 is internally provided with a locking unit.

[0014] The robot adapter plate body 6 is centrally provided with a robot drawbar 7, which is connected with an external robot. A high-frequency data carrier 5 is arranged on the robot adapter plate body 6 to interact with information of the external robot. The robot adapter plate body 6 is connected with the tray body 1 through a rhombic pin 9 and a circular pin 8.

[0015] The external robot carries the tray body 1 from a specified buffer position to the base body 11 above the workbench. The female taper ring 3 is butted with the male taper ring 12 for radial positioning. The zero-point drawbar 4 is butted with the zero-point chuck 10. The end surface of the zero-point chuck 10 is attached to the tray body 1. After the base body 11 and the tray body 1 are completely positioned, the fixture 14 is fixed to the upper surface of the tray body 1. The workpiece 13 is positioned in the positioning circle of the fixture 14. The fastening device is lightly tightened. The workbench is rotated. The reference axis of the workpiece 13 is aligned with the center line of the rotary table. The fastening device is tightened.

[0016] By switching the tray body 11 or the fixture 14, flexible automatic production based on a robot is realized.

[0017] The counterweights 2 are used for limiting, counterweight adjustment for aligning the mass center of the tray body 1 with the rotation axis, and limiting of buffer placement when the tray body 1 is connected with the base body 11.

[0018] The zero-point drawbars 4 and the zero-point chucks 10 are respectively provided with three groups, which are matched with each other to provide clamping force.

[0019] The female taper ring 3 is tightly mounted on the tray body 1. The short taper surface on the side surface is a positioning surface. Under the action of the clamping force of the three groups of zero-point drawbars 4, the female taper ring 3 is completely in contact with the male taper ring 12 for radial positioning to limit two degrees of freedom.

[0020] The male taper ring 12 is used in cooperation with the female taper ring 3 to radially position the tray body 1 and the base body 11.

[0021] Wherein, when the base body 11 is docked with the tray body 1, the zero point chuck 10 releases the air path, the locking unit in the chuck holds the pull pin 3, the tray body 1 is fastened on the base body 11, the robot end driving air pressure is connected, the robot pull pin 7 is released, and the robot is withdrawn.

[0022] Wherein, the high-frequency data carrier 5 is connected with the robot end high-frequency data carrier receiving end, and is used for information interaction with the PLC.

[0023] (Three) beneficial effects

[0024] The present application provides a kind of turning, milling machining automation production line zero point positioning device, based on HSK tool shank principle, with Zero Clmap zero point positioning system is combined, up and down taper ring quick and easy radial positioning, three groups of zero point positioning chuck and pull pin interface elastic floating, fastening clamping, robot adapter plate and robot connection interaction, realize the quick positioning switching between turning, milling equipment automation production line equipment, radial runout is within 0.005, high-precision clamping circulation of automation production line. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is the top view of the tray of the present application;

[0026] Figure 2 It is the front view of the tray of the present application;

[0027] Figure 3 It is the top view of the base of the present application;

[0028] Figure 4 It is the front view of the base of the present application;

[0029] Figure 5 It is the front view of the robot adapter plate of the present application;

[0030] Figure 6 It is the left view of the robot adapter plate of the present application;

[0031] Figure 7 It is the assembly structure schematic diagram of the present application;

[0032] Figure 8 It is the application example diagram of the present application. DETAILED DESCRIPTION

[0033] In order to make the purpose, content and advantages of the present application more clear, the specific embodiments of the present application are further described in detail below in combination with the drawings and examples.

[0034] Example 1

[0035] The present application provides a kind of turning, milling machining automation production line zero point positioning device, including: tray, base, robot adapter plate;

[0036] The tray comprises a tray body 1, a counterweight 2, a zero-point draw 4, a female taper ring 3.

[0037] The robot adapter plate comprises a diamond pin 9, a robot adapter plate body 6, a high-frequency data carrier 5, a robot draw 7, a circular pin 8.

[0038] The base comprises a base body 11, a zero-point chuck 10, a male taper ring 12.

[0039] The tray body 1 is a cylindrical structure, and a robot adapter plate body 6 and two counterweights 2 are arranged on the outer edge of the bottom surface of the tray body 1 at intervals. A female taper ring 3 is arranged at the center of the lower surface of the tray body 1, and a zero-point draw 4 is arranged near the female taper ring 3. The top surface of the tray body 1 is used to mount different part fixtures 14.

[0040] A male taper ring 12 is arranged at the center of the top surface of the base body 11, and a zero-point chuck 10 is arranged near the male taper ring 12. The bottom surface of the base body 11 is fixed on the workbench.

[0041] The base body 11 is provided with a zero-point chuck 10 loosening gas circuit and a center hole blowing gas circuit. The inside of the zero-point chuck 10 is provided with a locking unit.

[0042] The robot adapter plate body 6 is provided with a robot draw 7 at the center, which is connected with the external robot. The robot adapter plate body 6 is provided with a high-frequency data carrier 5 on the top surface, which interacts with the external robot information. The robot adapter plate body 6 is connected with the tray body 1 through the diamond pin 9 and the circular pin 8.

[0043] The external robot carries the tray body 1 from the designated buffer position to the upper base body 11 of the workbench. The female taper ring 3 is connected with the male taper ring 12 for radial positioning. The zero-point draw 4 is connected with the zero-point chuck 10. The end surface of the zero-point chuck 10 is attached to the tray body 1. After the base body 11 and the tray body 1 are completely positioned, the fixture 14 is fixed to the upper surface of the tray body 1. The workpiece 13 is positioned in the positioning circle of the fixture 14. The fastening device is lightly tightened. The workbench is rotated. The reference axis of the workpiece 13 is aligned with the center line of the rotary table. The fastening device is tightened.

[0044] By switching the tray body 11 or the fixture 14, flexible automatic production based on the robot is realized.

[0045] The counterweight 2 is used for limiting when the tray body 1 is connected with the base body 11, adjusting the counterweight to make the mass center of the tray coincide with the rotation axis, and limiting the buffer placement.

[0046] The zero-point draw 4 and the zero-point chuck 10 are respectively provided with three groups, which are matched with each other to provide clamping force.

[0047] Wherein, the female taper ring 3 is fastened and installed on the tray body 1, the side short taper surface is a positioning surface, and is in complete contact with the male taper ring 12 under the action of three groups of zero-point drawbars 4 clamping force, and is radially positioned to limit two degrees of freedom;

[0048] The male taper ring 12 is used in cooperation with the female taper ring 3 to radially position the tray body 1 and the base body 11.

[0049] Wherein, when the base body 11 is butted against the tray body 1, the zero-point chuck 10 loosening gas path is disconnected, the chuck inner locking unit holds the drawbar 3, the tray body 1 is fastened on the base body 11, the robot end driving gas pressure is connected, and the robot drawbar 7 is released.

[0050] Wherein, the high-frequency data carrier 5 is connected with a robot end high-frequency data carrier receiving end, and is used for information interaction with a PLC.

[0051] Embodiment 2

[0052] The following will take the zero-point positioning device as an example to illustrate its actual application. The device includes a base, a tray and a robot adapter plate three parts. In actual use, different fixtures 14 can be designed according to different workpieces 13 and installed on the tray. It should be noted that when installing the fixture 14, the positioning circle should be aligned with the rotary center axis, the fixture 14 positioning surface should be leveled, and then the six fastening bolts are fastened. The minimum number of trays installed with the same fixture 14 can be determined according to the production rhythm and clamping time. When product switching is required, the fixture 14 on the tray can be replaced. The tray with the installed fixture 14 is generally placed in the buffer library and transferred by the robot connected with the robot adapter plate.

[0053] The base in the device is installed on all production line stations, including lathes, machining centers, manual clamping workstations, etc. A high-precision rotary table is installed on the manual clamping workstation, and the stations with coaxial requirements are aligned with the rotary center of the workstation during installation.

[0054] Work flow:

[0055] 1. The PLC calls the robot to carry the tray;

[0056] 2. The zero-point positioning chuck loosening gas path is connected, and the chuck inner locking unit is released;

[0057] 3. The center hole blowing gas path is connected, and the zero-point positioning chuck is cleaned;

[0058] 4. The robot carries the tray from the specified buffer position to the manual clamping workstation,

[0059] 5. The upper taper ring is butted against the lower taper ring for radial positioning;

[0060] 6 The zero-point puller on the tray is connected to the zero-point positioning chuck;

[0061] 7 The end face of the three sets of zero-point positioning chucks is attached to the tray, and the base is fully positioned with the tray;

[0062] 8 The zero-point positioning chuck is loosened, the locking unit in the chuck holds the puller, and the tray is fastened on the base;

[0063] 9 The robot end drive gas pressure is connected, the robot puller is released, and the robot is withdrawn;

[0064] 10 The workpiece 13 is carried to the positioning circle on the tooling 14, the fastening device is lightly tightened, the rotary table is rotated, the reference axis of the workpiece 13 is aligned with the centerline of the rotary table, and the fastening device is tightened;

[0065] 11 Repeat step 2;

[0066] 12 The robot carries the tray from the manual clamping workbench to the designated buffer position.

[0067] The end face of the three sets of zero-point positioning chucks is attached to the tray body 1, which increases the positioning stability and improves the rigidity of the device.

[0068] The taper ring adopts the HSK taper principle, and the upper and lower taper rings generate friction on the entire taper surface, providing radial positioning and preventing axial movement under the action of the zero point.

[0069] The male taper ring unifies the center of rotation of the turning equipment and the manual clamping equipment, and provides stable positioning and clamping with the assistance of the zero-point positioning chuck.

[0070] The above structure ensures that different trays are switched between the five bases, and the radial runout measured is within 0.005mm.

[0071] The robot adapter plate and the parts installed thereon ensure quick switching with zero offset of the robot, and the gas path in the base and the zero point ensures that the device cooperates with the robot and PLC under the driving gas pressure of 6-8bar, realizing high-precision clamping and flow of the turning and milling automatic production line.

[0072] The above only describes the preferred embodiments of the present application, and it should be noted that for ordinary skilled persons in the technical field, several improvements and modifications can be made without departing from the technical principles of the present application, and these improvements and modifications should be considered as the protection scope of the present application.

Claims

1. A zero-point positioning device for an automated production line for turning and milling, characterized in that, include: Pallets, bases, and robot adapters; The pallet includes: a pallet body (1), a counterweight (2), a zero-point rivet (4), and a female cone ring (3); The robot adapter plate includes: a rhombus pin (9), a robot adapter plate body (6), a high-frequency data carrier (5), a robot pull pin (7), and a circular pin (8); The base includes: a base body (11), a zero-point chuck (10), and a male conical ring (12); The pallet body (1) is a column structure. The bottom outer edge of the pallet body (1) is provided with a robot adapter plate body (6) and two counterweights (2). A female cone ring (3) is provided at the center of the lower side of the pallet body (1). A zero-point rivet (4) is provided near the female cone ring (3). The top surface of the pallet body (1) is used to install different parts tooling (14). A male conical ring (12) is provided at the center of the top surface of the base body (11), and a zero-point chuck (10) is provided near the male conical ring (12). The bottom surface of the base body (11) is fixed on the worktable. The base body (11) is provided with a zero-point chuck (10) for releasing the air passage and a central hole blowing air passage, and the zero-point chuck (10) is provided with a locking unit inside; The robot adapter plate body (6) is provided with a robot pull pin (7) at the center, and is connected to an external robot through the robot pull pin (7). The robot adapter plate body (6) is provided with a high-frequency data carrier (5) for information interaction with the external robot. The robot adapter plate body (6) is connected to the tray body (1) through a diamond pin (9) and a round pin (8). An external robot moves the pallet body (1) from the designated buffer position to the base body (11) above the worktable. The female cone ring (3) and the male cone ring (12) are docked for radial positioning. The zero-point pull stud (4) is docked with the zero-point chuck (10). The end face of the zero-point chuck (10) is in contact with the pallet body (1). After the base body (11) and the pallet body (1) are fully positioned, the fixture (14) is fixed to the upper surface of the pallet body (1). The workpiece (13) is transported to the positioning circle on the fixture (14). The fastening device is lightly tightened. The worktable is rotated to align the reference axis of the workpiece (13) with the center line of the turntable. The fastening device is then tightened. Flexible automated production based on robots can be achieved by switching between the pallet body (11) or the tooling (14).

2. The zero-point positioning device for automated production lines of turning and milling as described in claim 1, characterized in that, The counterweight (2) is used for limiting the connection between the pallet body (1) and the base body (11), adjusting the counterweight so that the center of mass of the pallet coincides with the axis of rotation, and limiting the placement of the buffer.

3. The zero-point positioning device for automated production lines of turning and milling as described in claim 1, characterized in that, The zero-point rivet (4) and the zero-point chuck (10) are provided in three sets, and each set is matched with the other to provide clamping force.

4. The zero-point positioning device for automated production lines of turning and milling as described in claim 1, characterized in that, The female cone ring (3) is fastened to the tray body (1), and the short cone surface on the side is the positioning surface. Under the clamping force of the three sets of zero-point rivets (4), it is in complete contact with the male cone ring (12), and the radial positioning restricts two degrees of freedom. The male cone ring (12) is used in conjunction with the female cone ring (3) to radially position the tray body (1) and the base body (11).

5. The zero-point positioning device for automated production lines of turning and milling as described in claim 1, characterized in that, When the base body (11) docks with the tray body (1), the zero-point chuck (10) releases and the air circuit is disconnected, the locking unit inside the chuck holds the pull stud (3), the tray body (1) is fastened to the base body (11), the robot end drive air pressure is connected, the robot pull stud (7) is released, and the robot withdraws.

6. The zero-point positioning device for automated production lines of turning and milling as described in claim 1, characterized in that, The high-frequency data carrier (5) is connected to the high-frequency data carrier receiver on the robot end and is used to interact with the PLC.

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