A multi-faceted positioning drilling device for hexagonal nuts

Abstract

A multi-faceted positioning drilling device for hexagonal nuts is disclosed, belonging to the field of machining technology. Heaters are essential equipment for engine heating in cold northern regions during winter. Each heater has four hexagonal nuts with radial holes. To ensure the accuracy of the radial hole machining position, in actual machining, a fitter must first mark the hole position lines on the outer surface of each hexagonal nut, and then drill the holes using a bench drill. This process is costly and inefficient, and positioning the radial holes of the hexagonal nuts is difficult. To solve this problem, a multi-faceted positioning drilling device for hexagonal nuts is designed. This device uses a three-sided positioning method to fix the hexagonal nut, allowing for drilling operations.

Description

Technical Field

[0001] A multi-faceted positioning drilling device for hexagonal nuts belongs to the field of machining technology. Background Technology

[0002] Heaters are essential equipment for engine heating in cold northern regions during winter. Each heater has four hexagonal nuts with radial holes. To ensure the accuracy of the radial hole machining position, in actual machining, a fitter must first mark the hole position lines on the outer surface of each hexagonal nut, and then drill the holes with a bench drill. This process is costly and inefficient, and the positioning of the radial holes in the hexagonal nuts is difficult. To solve this problem, a multi-face positioning drilling device for hexagonal nuts was designed. This device uses a three-face positioning method to fix the hexagonal nuts, allowing for drilling operations. Summary of the Invention

[0003] 1. Purpose of the invention: The purpose of this invention is to provide a multi-faceted positioning drilling device for hexagonal nuts, which makes it easy to position the radial holes of hexagonal nuts, thereby meeting the requirements of easy clamping of hexagonal nuts and difficult machining of radial holes.

[0004] 2. Technical Solution: This invention solves the problems of difficult clamping of hexagonal nuts and difficult machining of radial holes by adopting a three-sided positioning and clamping method for hexagonal nuts. The device includes a fixed plate (1), an adjusting block (2), a sliding block (3), two bolts (4), two nuts (5), and a cylindrical pin (6).

[0005] The end face of the hexagonal nut (7) forms an axial reference fit with the fixed plate (1). The adjusting block (2) and the sliding block (3) respectively provide radial constraints on the four sides of the hexagonal nut (7). The fixed plate (1) and the adjusting block (2) have pre-drilled threaded holes. After the bolt (4) passes through both, an axial clamping force is generated on the fixed plate by tightening the nut (5). The positioning holes on the sides of the adjusting block (2) and the sliding block (3) are linked by a cylindrical pin (6). After the system is assembled, it is clamped on the bench drill table and can perform hexagonal nut drilling operations.

[0006] 3. Beneficial effects: 1) Simplified process: Completely eliminates the fitter's scribing process [originally took 90-150 seconds / piece]; 2) Increased efficiency: Three-sided positioning and clamping time ≤ 8 seconds, 12 times faster than the traditional method [clamping time of 105 seconds with the traditional process, clamping time of this device is 8 seconds]; 3) Cost optimization: Labor cost per process is reduced by 40% [labor cost per piece of the traditional process is 3.8 yuan, while that of this device is 2.3 yuan]; 4) Under the same equipment conditions, the production line cycle time is increased from 45 pieces / hour to 120 pieces / hour. Attached Figure Description

[0007] This invention appendix Figure 1 open.

[0008] Figure 1 A simplified schematic diagram of a multi-faceted positioning drilling device for hexagonal nuts.

[0009] In the attached diagram, the fixed plate (1) serves as the base of the device, providing an axial positioning reference for the hexagonal nut; the adjusting block (2) and sliding block (3) work together with the hexagonal nut to achieve precise positioning of its radial hole position. The sliding block also functions to slide along a set direction after completing the machining of a single hexagonal nut in order to load the next workpiece; two bolts (4) and two nuts (5) are used together to apply the necessary axial preload to the hexagonal nut; a cylindrical pin (6) is used to ensure the reliable repeatability of the radial hole position accuracy after continuous replacement of hexagonal nuts; a hexagonal nut (7); and two drill bits (8) are used to drill holes in the hexagonal nut. Detailed Implementation

[0010] A multi-faceted positioning drilling device for hexagonal nuts is provided, which enables easy positioning of the radial holes of hexagonal nuts to meet the requirements of difficult clamping of hexagonal nuts and difficult machining of radial holes; by adopting a three-faced positioning and clamping method for hexagonal nuts, the problems of difficult clamping of hexagonal nuts and difficult machining of radial holes are solved; the device includes a fixed plate (1), an adjusting block (2), a sliding block (3), two bolts (4), two nuts (5), and a cylindrical pin (6); hexagonal nuts (7) The end face and the fixed plate (1) form an axial reference fit. The adjusting block (2) and the sliding block (3) respectively implement radial constraints on the four sides of the hexagonal nut (7). The fixed plate (1) and the adjusting block (2) have pre-drilled threaded holes. After the bolt (4) passes through both, the axial clamping force is generated on the fixed plate by tightening the nut (5). The positioning holes on the sides of the adjusting block (2) and the sliding block (3) are linked by the cylindrical pin (6). After the system is assembled, it is clamped on the bench drill table and can perform hexagonal nut drilling operations.

Claims

1. A multi-faceted positioning drilling device for hexagonal nuts, comprising a fixed plate (1), an adjusting block (2), a sliding block (3), two bolts (4), two nuts (5), and a cylindrical pin (6); the end face of the hexagonal nut (7) forms an axial reference fit with the fixed plate (1), and the adjusting block (2) and the sliding block (3) respectively provide radial constraints on the four sides of the hexagonal nut (7); the fixed plate (1) and the adjusting block (2) have pre-drilled threaded holes, and after the bolt (4) passes through both, it generates an axial clamping force on the fixed plate by tightening the nut (5); the positioning holes provided on the sides of the adjusting block (2) and the sliding block (3) are linked by the cylindrical pin (6); the system is assembled and clamped on the bench drill table, and can perform hexagonal nut drilling operations.

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