Tray exchange system for five-axis machine tool

Abstract

The utility model discloses a pallet exchange system for a five-axis machine tool, which comprises a fixed seat, a sliding seat, a double-acting double-axis air cylinder, a first pallet fork and a second pallet fork, the fixed seat is arranged on one side of the five-axis machine tool, the sliding seat can be transversely arranged on the fixed seat, the first pallet fork and the second pallet fork can be longitudinally and transversely arranged on the sliding seat at intervals, and the double-acting double-axis air cylinder is arranged on the first pallet fork and the second pallet fork. A linear driving mechanism which is located between the first pallet fork and the second pallet fork and extends longitudinally is arranged on the sliding base, the double-acting double-shaft air cylinder is transversely arranged on the linear driving mechanism, and a first connecting block is arranged on the side, close to the double-acting double-shaft air cylinder, of the tail of the first pallet fork. A second connecting block is arranged on the side, close to the double-acting double-shaft air cylinder, of the tail of the second pallet fork. By means of the mode, according to the tray exchange system for the five-axis machine tool, the tray exchange speed is increased, the structure is simple, and the maintenance cost is reduced.

Description

Technical Field

[0001] The utility model relates to the field of pallet exchange systems, in particular to a pallet exchange system for a five-axis machine tool. Background Art

[0002] To accommodate the different workpieces being processed, the machine tool can first secure the workpiece to a standard pallet. The pallet is then moved into the machine, where the pallet is clamped to position the workpiece. After processing is complete, the workpiece and pallet are removed and a new, unprocessed workpiece and corresponding pallet are placed into the machine, completing the pallet exchange.

[0003] Common pallet exchange methods include manual pallet exchange and rotary pallet exchange systems. Manual pallet exchange relies on manual positioning and driving of the pallet, which is slow and inefficient. Rotary pallet exchange systems have a high degree of automation. For example, the invention patent application with application number 202211259791.0 discloses a flexible manufacturing unit based on a five-axis machine tool and its operation method. Standard pallets are placed on a circular track. During the loading and unloading process, a truss robot is required to run repeatedly between the five-axis machine tool and the circular track of the workpiece storage and transportation system. The exchange speed is slow, the structure is complex, and the maintenance cost is high, which requires improvement. Utility Model Content

[0004] The main technical problem solved by the utility model is to provide a pallet exchange system for a five-axis machine tool, which improves the pallet exchange speed, simplifies the structure and reduces the maintenance cost.

[0005] In order to solve the above technical problems, a technical solution adopted by the utility model is: to provide a pallet exchange system for a five-axis machine tool, including: a fixed seat, a slide, a double-acting double-axis cylinder, a first fork and a second fork, the fixed seat is arranged on one side of the five-axis machine tool, the slide can be laterally arranged on the fixed seat, the first fork and the second fork can be longitudinally arranged on the slide with a horizontal interval, the slide is provided with a linear drive mechanism located between the first fork and the second fork and extending longitudinally, the double-acting double-axis cylinder is laterally arranged on the linear drive mechanism, a first connecting block is provided on the side of the tail of the first fork close to the double-acting double-axis cylinder, and a second connecting block is provided on the side of the tail of the second fork close to the double-acting double-axis cylinder.

[0006] In a preferred embodiment of the present invention, the five-axis machine tool and the loading and unloading station are arranged laterally spaced apart on the same side of the fixed base.

[0007] In a preferred embodiment of the present invention, a motherboard is provided on the top of the loading and unloading station, a positioning column is provided on the bottom of the tray, and a positioning groove corresponding to the positioning column is provided on the motherboard.

[0008] In a preferred embodiment of the present invention, the loading and unloading station is provided with a push rod that passes through the motherboard upward, and the positioning grooves are distributed on both sides of the push rod.

[0009] In a preferred embodiment of the present invention, the loading and unloading station is provided with a telescopic air cylinder or oil cylinder for driving the ejector rod to move up and down.

[0010] In a preferred embodiment of the present invention, the first connecting block and the second connecting block are respectively provided with a socket corresponding to the piston rod of the double-acting double-axis cylinder.

[0011] In a preferred embodiment of the present invention, the linear drive mechanism adopts an oil cylinder or an electric cylinder.

[0012] In a preferred embodiment of the present invention, the front ends of the first fork and the second fork are provided with U-shaped grooves corresponding to the pallet.

[0013] In a preferred embodiment of the present invention, a first slide rail located below the slide is laterally arranged on the fixed seat, a first slider located on the first slide rail is arranged at the bottom of the slide, and a ball screw for driving the slide to move laterally is arranged on the fixed seat.

[0014] In a preferred embodiment of the present invention, a second sliding block is longitudinally provided on the slide seat and is respectively located below the first fork and the second fork, and a second slide rail located on the corresponding second sliding block is provided at the bottom of the first fork and the second fork.

[0015] The beneficial effects of the present invention are as follows: the present invention provides a pallet exchange system for a five-axis machine tool, which uses a first fork to take out a pallet and a processed workpiece from the five-axis machine tool, and then directly uses a second fork to feed a new pallet and an unprocessed workpiece into the five-axis machine tool, thereby improving the pallet exchange speed and helping to reduce the waiting time of the five-axis machine tool. Moreover, the first fork, the second fork and their drive have a simple structure, fast movement, high operating reliability and reduced maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work. Among them:

[0017] Figure 1 This is a structural schematic diagram of a preferred embodiment of a pallet exchange system for a five-axis machine tool according to the present invention;

[0018] Figure 2 yes Figure 1Schematic diagram of the structure after the slide moves laterally;

[0019] Figure 3 yes Figure 2 Schematic diagram of the structure of the middle fixed seat from another angle. DETAILED DESCRIPTION

[0020] The following is a clear and complete description of the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] See also Figures 1 to 3 , the embodiments of the present utility model include:

[0022] like Figure 1 The pallet exchange system for the five-axis machine tool shown is used for exchanging pallets 7 between the five-axis machine tool 5 and the loading and unloading station 6, and includes: a fixed base 1, a slide 2, a double-acting double-axis cylinder 9, a first fork 3 and a second fork 4. The fixed base 1 is arranged on one side of the five-axis machine tool 5. In this embodiment, the five-axis machine tool 5 and the loading and unloading station 6 are laterally spaced and arranged on the same side of the fixed base 1 to facilitate pallet exchange.

[0023] The slide 2 is laterally movably mounted on the fixed base 1. A first slide rail 11 is laterally mounted on the fixed base 1, positioned below the slide 2. A first slider 10 is positioned at the bottom of the slide 2, positioned on the first slide rail 11. This improves the stability of the slide 2's lateral movement. A ball screw 12 is mounted on the fixed base 1 to drive the slide 2's lateral movement. The ball screw 12 is rotationally driven by a servo motor and engages a nut at the bottom of the slide 2 to achieve lateral movement of the slide 2. The servo motor can be controlled by a PLC, improving the accuracy of the slide 2's lateral movement control.

[0024] The first fork 3 and the second fork 4 are arranged on the slide 2 in a longitudinally movable manner. Figure 3 As shown, a second slider 21 is longitudinally arranged on the slide 2 and is respectively located below the first fork 3 and the second fork 4. A second slide rail 22 is arranged at the bottom of the first fork 3 and the second fork 4 and is located on the corresponding second slider to improve the longitudinal movement stability of the first fork 3 and the second fork 4.

[0025] A linear drive mechanism 8 is provided on the slide 2 and is located between the first fork 3 and the second fork 4 and extends longitudinally. A double-acting double-axis cylinder 9 is transversely arranged on the linear drive mechanism 8. The linear drive mechanism 8 can adopt an oil cylinder or an electric cylinder. In this embodiment, the linear drive mechanism 8 adopts an electric cylinder, which is controlled by PLC for extension and retraction, and the action is fast.

[0026] like Figure 2 As shown, a first connecting block 16 is provided on the side of the tail of the first fork 3 close to the double-acting double-axis cylinder 9, and a second connecting block 17 is provided on the side of the tail of the second fork 4 close to the double-acting double-axis cylinder 9. The first connecting block 16 and the second connecting block 17 are respectively provided with a socket 18 corresponding to the piston rod of the double-acting double-axis cylinder 9. The double-acting double-axis cylinder 9 drives the piston rod to extend and retract left and right, and inserts it into the socket 18 in the corresponding first connecting block 16 or second connecting block 17, and then the linear drive mechanism 8 is used to drive the longitudinal movement of the corresponding first fork 3 or second fork 4.

[0027] like Figure 1 As shown, a motherboard 14 is provided on the top of the loading and unloading station 6. Figure 3 As shown, positioning posts 19 are symmetrically provided at the bottom of the tray 7, and positioning grooves 13 corresponding to the positioning posts 19 are provided on the motherboard 14, which facilitates the positioning of the tray 7 on the motherboard 14 and improves stability and positioning accuracy.

[0028] The loading and unloading station 6 is provided with a push rod 15 that extends upward through the motherboard 14. Two positioning slots 13 are symmetrically distributed on both sides of the push rod 15. The two positioning slots 13 cooperate with the positioning posts 19 to prevent the tray 7 from tilting and improve positioning stability. The loading and unloading station 6 is provided with a telescopic cylinder or oil cylinder that drives the push rod 15 up and down, making it convenient for the push rod 15 to lift or lower the pallet.

[0029] The front ends of the first fork 3 and the second fork 4 are provided with U-shaped grooves 20 corresponding to the pallet 7, which facilitate the cooperation with the pallet 7, so that the first fork 3 or the second fork 4 can fork the corresponding pallet when moving forward, ensuring stability.

[0030] like Figure 1 After the workpiece is processed in the five-axis machine tool 5, the door of the five-axis machine tool 5 is opened, and the linear drive mechanism 8 drives the double-acting double-axis cylinder 9 and the first fork 3 to move forward longitudinally. The front end of the first fork 3 enters the five-axis machine tool 5, picks up the processed workpiece and pallet, and moves backward longitudinally to reset. Then the slide 2 continues to move forward one station, switches to the second fork 4 to move forward longitudinally, and places the new pallet and parts on the zero-point quick change system in the five-axis machine tool 5. The pallet is positioned and clamped by the zero-point quick change system. The second fork 4 moves backward longitudinally to reset, and the five-axis machine tool 5 closes the door for processing.

[0031] like Figure 2As shown, the slide 2 moves horizontally backward to the loading and unloading station 6, and the first fork 3 moves longitudinally forward to place the processed workpiece and pallet on the loading and unloading station 6, making it convenient for the operator to replace the workpiece on the pallet.

[0032] In summary, the pallet exchange system for a five-axis machine tool disclosed in the present invention can automatically exchange pallets, simplify the structure, and improve exchange efficiency and maintenance convenience.

[0033] The above are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A pallet exchange system for a five-axis machine tool, used for exchanging pallets between a five-axis machine tool and a loading and unloading station, characterized in that: include: A fixed seat, a slide, a double-acting double-axis cylinder, a first fork and a second fork, the fixed seat is arranged on one side of the five-axis machine tool, the slide can be arranged laterally on the fixed seat, the first fork and the second fork can be arranged longitudinally on the slide with a transverse interval, the slide is provided with a linear drive mechanism located between the first fork and the second fork and extending longitudinally, the double-acting double-axis cylinder is laterally arranged on the linear drive mechanism, a first connecting block is provided on the side of the tail of the first fork close to the double-acting double-axis cylinder, and a second connecting block is provided on the side of the tail of the second fork close to the double-acting double-axis cylinder.

2. The pallet exchange system for a five-axis machine tool according to claim 1, characterized in that: The five-axis machine tool and the loading and unloading station are arranged at the same side of the fixed base with a transverse spacing.

3. The pallet exchange system for a five-axis machine tool according to claim 1, wherein: A motherboard is provided on the top of the loading and unloading station, a positioning column is provided on the bottom of the tray, and a positioning groove corresponding to the positioning column is provided on the motherboard.

4. The pallet exchange system for a five-axis machine tool according to claim 3, characterized in that: The loading and unloading station is provided with a push rod which passes through the motherboard upwards, and the positioning grooves are distributed on both sides of the push rod.

5. The pallet exchange system for a five-axis machine tool according to claim 1, wherein: The loading and unloading station is provided with a telescopic cylinder or oil cylinder for driving the ejector rod to rise and fall.

6. The pallet exchange system for a five-axis machine tool according to claim 1, wherein: The first connecting block and the second connecting block are respectively provided with sockets corresponding to the piston rods of the double-acting double-axis cylinders.

7. The pallet exchange system for a five-axis machine tool according to claim 1, wherein: The linear drive mechanism adopts an oil cylinder or an electric cylinder.

8. The pallet exchange system for a five-axis machine tool according to claim 1, wherein: The front ends of the first fork and the second fork are provided with U-shaped grooves corresponding to the pallet.

9. The pallet exchange system for a five-axis machine tool according to claim 1, wherein: A first slide rail located below the slide is transversely arranged on the fixed seat, a first slider located on the first slide rail is arranged at the bottom of the slide, and a ball screw for driving the slide to move transversely is arranged on the fixed seat.

10. The pallet exchange system for a five-axis machine tool according to claim 1, wherein: The slide seat is longitudinally provided with second sliding blocks respectively located below the first fork and the second fork, and the bottom of the first fork and the second fork are provided with second slide rails located on the corresponding second sliding blocks.

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