Servo pin mechanism of NC servo tool

Abstract

The utility model relates to a servo pin mechanism of an NC servo tool, which comprises three groups of pin components arranged in an annular array, an opening and closing driving component used for driving the three groups of pin components to do centripetal motion or centrifugal motion simultaneously, and a telescopic driving component capable of doing telescopic motion, and the three groups of pin components are respectively arranged on the opening and closing driving component. The opening and closing driving assembly is installed at the moving end of the telescopic motion assembly, and the fixed end of the telescopic motion assembly is installed at the tail end of a mechanical arm of the NC servo tool. The servo pin mechanism has the beneficial effects that the three groups of pin assemblies are driven to do centripetal motion or centrifugal motion through the opening and closing driving assembly, so that the three groups of pin assemblies support, position and fix the positions of pin holes in a workpiece, the same servo pin mechanism can be suitable for workpieces with various pin hole diameters and workpiece thicknesses, and the number, cost and storage space of standby servo pin mechanisms are reduced.

Description

Technical Field

[0001] The utility model relates to the field of servo mechanical equipment, in particular to a servo pin mechanism of an NC servo tooling. Background Art

[0002] Modern factories are equipped with a large number of NC servo tooling to support, position and fix various workpieces that need to be processed or tested. The existing NC servo tooling mainly uses the pins on the pin cylinder and the pressure block to support, position and fix the pin hole position on the workpiece. Since the pin diameter on the pin cylinder and the activity trajectory of the pressure block are fixed, they need to be replaced according to the diameter of the pin hole and the thickness of the workpiece. The number of spare pin cylinders is large, the cost is high, and it takes up storage space. Utility Model Content

[0003] The purpose of the utility model is to overcome the above problems existing in the prior art and provide a servo pin mechanism of an NC servo tooling.

[0004] In order to achieve the above technical objectives and the above technical effects, the present invention is implemented through the following technical solutions:

[0005] A servo pin mechanism of an NC servo tooling comprises three groups of pin assemblies arranged in a circular array, an opening and closing drive assembly for driving the three groups of pin assemblies to simultaneously perform centripetal motion or simultaneous centrifugal motion, and a telescopic drive assembly capable of telescopic motion, wherein the three groups of pin assemblies are respectively mounted on the opening and closing drive assembly, the opening and closing drive assembly is mounted on the moving end of the telescopic motion assembly, and the fixed end of the telescopic motion assembly is mounted on the end of the mechanical arm of the NC servo tooling.

[0006] Among them, the telescopic drive assembly includes a rectangular first mounting plate, a rectangular second mounting plate, and a telescopic cylinder. The first mounting plate is installed on the end of the robotic arm of the NC servo tooling with screws, the tail end of the telescopic cylinder is installed on the first mounting plate, and the end of the piston rod of the telescopic cylinder is installed in the center of the second mounting plate.

[0007] Among them, the opening and closing drive assembly includes a cylindrical mounting shell and a direct-drive motor. The direct-drive motor and the mounting shell are mounted on a second mounting plate. A circular turntable is mounted at the rotor end of the direct-drive motor. The direct-drive motor and the circular turntable are both located in the mounting shell. The circular turntable is provided with three arc-shaped slide grooves arranged in a circular array. The flat end of the mounting shell is provided with three linear guide grooves arranged along the radial direction of the mounting shell. The three guide grooves are arranged in a circular array, and the cross-section of the guide groove is in the shape of a "convex" character.

[0008] Among them, the pin assembly includes a guide block with a "convex"-shaped cross-section, a cylindrical slider, a support block with a fan-shaped cross-section, and a pin block with a fan-shaped cross-section. The slider is vertically fixed to the bottom end of the guide block, the slider slides in cooperation with the slide groove, the guide block slides in cooperation with the guide groove, the support block is vertically fixed to the top end of the guide block, and the pin block is fixed to the top end of the support block.

[0009] Among them, when the three groups of pin assemblies are completely assembled together, the three support blocks are combined into a cylindrical support column, and the three pin blocks are combined into a cylindrical pin column, and the outer diameter of the support column is greater than the outer diameter of the pin column.

[0010] Wherein, the upper part of the outer side wall of the pin block is a slope.

[0011] Wherein, a guide tube is installed at each corner of the first mounting plate, and a guide rod is installed at each corner of the second mounting plate, and the guide rod is plug-in compatible with the guide tube.

[0012] The beneficial effects of the utility model are as follows: by opening and closing the driving assembly, the three groups of pin assemblies are driven to make centripetal or centrifugal motion, so that the three groups of pin assemblies can support, position and fix the positions of the pin holes on the workpiece; the same servo pin mechanism can be applicable to workpieces with various pin hole diameters and workpiece thicknesses, thereby reducing the number, cost and storage space of spare servo pin mechanisms. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0014] Figure 1 It is a structural schematic diagram of the servo pin mechanism when the three sets of pin assemblies in the utility model are in a fully closed state;

[0015] Figure 2 It is a structural schematic diagram of the servo pin mechanism when the three sets of pin assemblies in the utility model are in a fully opened state;

[0016] Figure 3 This is a disassembled structural diagram of the opening and closing drive assembly in the utility model;

[0017] Figure 4 It is a structural schematic diagram of the central pin assembly of the utility model;

[0018] Explanation of the numbers in the figure: telescopic drive assembly 1, first mounting plate 11, second mounting plate 12, telescopic cylinder 13, guide tube 14, guide rod 15, opening and closing drive assembly 2, mounting shell 21, direct drive motor 22, circular turntable 23, slide groove 24, guide groove 25, pin assembly 3, guide block 31, slider 32, support block 33, pin block 34, slope 35. DETAILED DESCRIPTION

[0019] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0020] like Figures 1 to 4 As shown, a servo pin mechanism of an NC servo tooling comprises three groups of pin assemblies 3 arranged in a circular array, an opening and closing driving assembly 2 for driving the three groups of pin assemblies to simultaneously perform centripetal motion or simultaneous centrifugal motion, and a telescopic driving assembly 1 capable of telescopic motion, wherein the three groups of pin assemblies 3 are respectively mounted on the opening and closing driving assembly 2, the opening and closing driving assembly 2 is mounted on the moving end of the telescopic motion assembly 1, and the fixed end of the telescopic motion assembly 1 is mounted on the end of the robot arm of the NC servo tooling.

[0021] The telescopic drive assembly 1 includes a rectangular first mounting plate 11, a rectangular second mounting plate 12, and a telescopic cylinder 13. The first mounting plate 11 is mounted on the end of the robot arm of the NC servo tooling with screws, the tail end of the telescopic cylinder 13 is mounted on the first mounting plate 11, and the piston rod end of the telescopic cylinder 13 is mounted at the center of the second mounting plate 12; a guide tube 14 is installed at each corner of the first mounting plate 11, and a guide rod 15 is installed at each corner of the second mounting plate 12. The guide rod 15 is plugged in and out of the guide tube 14 to prevent the second mounting plate from rotating during the telescopic movement.

[0022] The opening and closing drive assembly 2 includes a cylindrical mounting shell 21 and a direct-drive motor 22. The direct-drive motor 22 and the mounting shell 21 are mounted on the second mounting plate 12. A circular turntable 23 is mounted at the rotor end of the direct-drive motor 22. Both the direct-drive motor 22 and the circular turntable 23 are located in the mounting shell 21. The circular turntable 23 is provided with three arc-shaped slide grooves 24 arranged in a circular array, and the central angle of each slide groove is 120°; the flat end of the mounting shell 21 is provided with three straight guide grooves 25 arranged along the radial direction of the mounting shell 21, and the three guide grooves 25 are arranged in a circular array, and the cross-section of the guide groove 25 is in the shape of a "convex" character.

[0023] The pin assembly 3 includes a guide block 31 with a "convex"-shaped cross section, a cylindrical slider 32, a support block 33 with a fan-shaped cross section, and a pin block 34 with a fan-shaped cross section. The slider 34 is vertically fixed to the bottom end of the guide block 31, the slider 32 slides in cooperation with the slide groove 24, the guide block 31 slides in cooperation with the guide groove 25, the support block 33 is vertically fixed to the top end of the guide block 31, and the pin block 34 is fixed to the top end of the support block 33; when the three groups of pin assemblies 3 are fully assembled together, the three support blocks 33 are combined into a cylindrical support column, and the three pin blocks 34 are combined into a cylindrical pin column, and the outer diameter of the support column is greater than the outer diameter of the pin column; the upper part of the outer wall of the pin block 34 is a slope 35.

[0024] The robotic arm of the NC servo tooling adjusts the position of the servo pin mechanism according to the position of the pin hole of the workpiece. When the loading robot transports the workpiece to the workstation of the NC servo tooling, the telescopic drive assembly extends to drive the pin blocks of the three pin assemblies to be inserted into the pin holes of the workpiece at the same time, and the opening and closing drive assembly simultaneously drives the three pin assemblies to perform centrifugal motion until the outer walls of the pin blocks of the three pin assemblies fit with the inner walls of the pin holes of the workpiece, and the loading robot releases the workpiece; after the workpiece processing or inspection is completed, the unloading robot grabs the workpiece, the opening and closing drive assembly simultaneously drives the three pin assemblies to perform centripetal motion, and the telescopic drive assembly contracts to pull the pin blocks of the pin assemblies out of the pin holes.

[0025] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. A servo pin mechanism of an NC servo tooling, characterized in that: It includes three groups of pin assemblies arranged in a circular array, an opening and closing driving assembly for driving the three groups of pin assemblies to perform centripetal motion or centrifugal motion simultaneously, and a telescopic driving assembly capable of telescopic motion. The three groups of pin assemblies are respectively installed on the opening and closing driving assembly, the opening and closing driving assembly is installed on the moving end of the telescopic motion assembly, and the fixed end of the telescopic motion assembly is installed at the end of the robot arm of the NC servo tooling.

2. The servo pin mechanism according to claim 1, characterized in that: The telescopic drive assembly includes a rectangular first mounting plate, a rectangular second mounting plate, and a telescopic cylinder. The first mounting plate is mounted on the end of the robotic arm of the NC servo tooling with screws, the tail end of the telescopic cylinder is mounted on the first mounting plate, and the end of the piston rod of the telescopic cylinder is mounted on the center of the second mounting plate.

3. The servo pin mechanism according to claim 2, characterized in that: The opening and closing drive assembly includes a cylindrical mounting shell and a direct-drive motor. The direct-drive motor and the mounting shell are mounted on a second mounting plate. A circular turntable is mounted at the rotor end of the direct-drive motor. The direct-drive motor and the circular turntable are both located in the mounting shell. The circular turntable is provided with three arc-shaped slide grooves arranged in a circular array. The flat end of the mounting shell is provided with three linear guide grooves arranged along the radial direction of the mounting shell. The three guide grooves are arranged in a circular array, and the cross-section of the guide groove is in the shape of a "convex" character.

4. The servo pin mechanism according to claim 3, characterized in that: The pin assembly includes a guide block with a "convex"-shaped cross section, a cylindrical slider, a support block with a fan-shaped cross section, and a pin block with a fan-shaped cross section. The slider is vertically fixed to the bottom end of the guide block, the slider is slidably matched with the slide groove, the guide block is slidably matched with the guide groove, the support block is vertically fixed to the top end of the guide block, and the pin block is fixed to the top end of the support block.

5. The servo pin mechanism according to claim 4, characterized in that: When the three groups of pin assemblies are fully assembled together, the three support blocks are combined into a cylindrical support column, and the three pin blocks are combined into a cylindrical pin column, and the outer diameter of the support column is greater than the outer diameter of the pin column.

6. The servo pin mechanism according to claim 4, characterized in that: The upper part of the outer side wall of the pin block is a slope surface.

7. The servo pin mechanism according to claim 2, characterized in that: A guide tube is installed at each corner of the first mounting plate, and a guide rod is installed at each corner of the second mounting plate. The guide rod is plug-in compatible with the guide tube.

Images