A method for processing a blind hole of a metal box part

Abstract

The application is a metal box part blind hole processing method for metal mechanical processing. It includes three steps: tool preparation, clamping positioning and parameter selection, and drilling processing. In the tool preparation, the hand drill clamping die setting, the switch pressure plate mechanism setting, the pressure plate hole positioning mechanism setting, and the drill template hole positioning mechanism setting are completed. In the hand drill clamping die setting, the rectangular steel sleeve hand drill clamping die is set according to the structure characteristics of the hand drill, and the circular arc groove, the open slot, and the threaded hole are set on the die to facilitate the built-in positioning of the hand drill. In the switch pressure plate mechanism setting, one end of a machine tool live center is welded on the hand drill clamping die to facilitate the installation of the hand drill. At the same time, the pressure plate hole positioning mechanism setting and the drill template hole positioning mechanism setting are completed. The application is widely used in the blind hole processing of metal parts, and has the advantages of simple operation method, good processing process repeatability, high production efficiency, and stable and reliable product quality.

Description

Technical Field

[0001] This invention belongs to the field of metal machining, and is particularly applicable to a method for processing blind holes in metal box components for processing bolt holes and positioning grooves in confined spaces. Background Technology

[0002] In the existing technology, the blind hole processing of metal box components usually adopts the direct drilling method of electric drill with scribing to determine the hole position and manual perception of the hole depth. This method has low work efficiency, large positioning error, difficulty in ensuring size, and low processing accuracy. Summary of the Invention

[0003] The purpose of this invention is to provide a method for machining blind holes in metal box components, which can effectively determine the positioning center, reliably sense the hole position and depth, and greatly improve dimensional accuracy.

[0004] A method for machining blind holes in metal box components is designed, comprising three steps: tooling preparation, clamping and positioning and parameter selection, and drilling commencement.

[0005] During tooling preparation, a dedicated electric drill is selected, and the electric drill clamping mold, switch pressure plate mechanism, pressure plate positioning mechanism, and drill template hole positioning mechanism are set up. When setting up the electric drill clamping mold, a rectangular steel sleeve-shaped clamping mold is designed based on the electric drill's dimensions and structural characteristics. An arc-shaped groove is cut at one end of the clamping mold, leaving space for the drill chuck. A pre-reserved opening slot is provided at the other end of the clamping mold to allow for the movement of the electric drill's switch button. Openings are made on the upper, lower, left, and right inner walls of the clamping mold. Several threaded through holes are provided to facilitate screw positioning when the electric drill is installed. When setting up the switch pressure plate mechanism, one end of a machine tool center is welded to the electric drill clamping mold to allow the electric drill to be installed in the mold. The switch pressure plate mechanism is then secured to the electric drill with screws through a pre-drilled slot on the clamping mold and suspended above the drill's switch button. After the electric drill is powered on, pressing the switch pressure plate mechanism controls the start and stop of the drill. This completes the setup of the pressure plate hole positioning mechanism and the drill template hole positioning mechanism.

[0006] During clamping, positioning, and parameter selection, the pressure plate hole positioning mechanism and the drill template hole positioning mechanism are clamped and positioned on the workpiece to be processed. The electric drill clamping mold is set at the lower part of the spindle of the radial drilling machine. The radial drilling machine is used to control the feed movement of the electric drill in all directions. The detailed parameters of the blind hole position and the processing position are determined through the pressure plate hole positioning mechanism and the drill template hole positioning mechanism.

[0007] When starting drilling, start the electric drill and ensure its continuous operation. Based on the feed adjustment system of the radial drilling machine, precisely control the feed movement of the drill bit and the drilling depth to ensure the machining accuracy of the blind hole position and depth.

[0008] The beneficial technical effects of this invention are as follows: Because a dedicated electric drill clamping mold, switch pressure plate mechanism, pressure plate hole positioning mechanism, and drill template hole positioning mechanism are used during tooling preparation, the labor and time costs of manually marking and determining hole positions are greatly reduced. Simultaneously, during clamping and parameter selection, the pressure plate hole positioning mechanism and drill template hole positioning mechanism complete the clamping and positioning on the workpiece. The electric drill clamping mold is set at the lower part of the radial drilling machine spindle, and the radial drilling machine controls the feed movement of the electric drill in all directions, thus realizing motorized feed during the machining process, improving work efficiency and ensuring machining accuracy. This invention also has the advantages of simple operation, good repeatability of the machining process, high production efficiency, and stable and reliable product quality. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of blind hole machining. In the diagram, 1 is the screw, 2 is the spindle of the radial drilling machine, 3 is the live center, 4 is the switch pressure plate mechanism, 5 is the electric drill switch, 6 is the electric drill clamping mold, 7 is the electric drill, 8 is the blind hole, 9 is the drill template hole positioning mechanism, 10 is the pressure plate hole positioning mechanism, and 11 is the workpiece to be machined. Detailed Implementation

[0010] The following describes a method for machining blind holes in metal box components, based on the embodiments provided in the accompanying drawings. The machining process includes three steps: tooling preparation, clamping and positioning and parameter selection, and drilling commencement.

[0011] During tooling preparation, a dedicated electric drill 7 is selected, and the electric drill clamping mold 6, switch pressure plate mechanism 4, pressure plate positioning mechanism 10, and drill template hole positioning mechanism 9 are set up. When setting up the electric drill clamping mold 6, a rectangular steel sleeve-shaped electric drill clamping mold 6 is designed based on the external dimensions and structural characteristics of the electric drill 7. An arc groove is opened at one end of the electric drill clamping mold 6, with the opening of the arc groove providing space for the drill chuck of the electric drill 7. A pre-reserved opening slot is provided at the other end of the electric drill clamping mold 6 to allow space for the switch button of the electric drill 7 to move. Several threaded through holes are opened on the upper, lower, left, and right inner walls of the electric drill clamping mold 6 to facilitate screw positioning when the electric drill 7 is inserted. When setting up the switch pressure plate mechanism 4, one end of a machine tool center 3 is welded to the electric drill clamping mold 6 to facilitate the insertion of the electric drill 7 into the electric drill clamping mold 6. The switch pressure plate mechanism 4 is then fastened to the electric drill 7 with screws through the pre-drilled slot on the electric drill clamping mold 6, and suspended above the switch button of the electric drill 7. After the electric drill 7 is powered on, pressing the switch pressure plate mechanism 4 controls the start and stop of the electric drill 7. This completes the setting of the pressure plate hole positioning mechanism 10 and the drill template hole positioning mechanism 9.

[0012] During clamping, positioning, and parameter selection, the pressure plate hole positioning mechanism 10 and the drill template hole positioning mechanism 9 are clamped and positioned on the workpiece 11 to be processed. The electric drill clamping mold 6 is set at the lower part of the radial drilling machine spindle 2. The radial drilling machine is used to control the feed movement of the electric drill 7 in all directions. The detailed parameters and processing position of the blind hole 8 are determined by the pressure plate hole positioning mechanism 10 and the drill template hole positioning mechanism 9.

[0013] When starting drilling, start the electric drill 7 to ensure its continuous operation. Using the radial drilling machine's own feed adjustment system, precisely control the drill bit's feed movement and drilling depth to ensure the machining accuracy of the blind hole 8's position and depth. During machining, use the Morse taper shank of the live center 3 on the die 6 to mount the electric drill 7 onto the radial drilling machine spindle 2, and then turn off the power to the spindle 2 motor. Mount the drill bit on the spindle chuck of the electric drill 7, insert the electric drill switch pressure plate 4 downwards to press the electric drill switch 5 button, and start the electric drill 7 to ensure its operation.

[0014] Meanwhile, the feed adjustment system of the radial drilling machine itself precisely controls the feed movement and machining depth of the drill bit. After the workpiece 11 is positioned and clamped on the radial drilling machine, the drill template hole positioning mechanism 9 is installed on the stepped surface of the blind hole 8 according to the position and angle of the threaded hole. The pressure plate hole positioning mechanism 10 is located at the lower part of the blind hole 8. After adjustment, the drill template hole positioning mechanism 9 and the pressure plate hole positioning mechanism 10 are pressed onto the workpiece 11 by two screws 1. Then, the position of the electric drill 7 is adjusted so that the drill bit enters the drill template hole positioning mechanism 9, realizing the rapid and accurate positioning of the blind hole 8 of the workpiece 11 and ensuring machining accuracy. Since the blind hole 8 of the workpiece 11 is located inside the housing and the space is small, considering the difficulty of chip removal in actual processing, the basic position of the blind hole 8 of the workpiece 11 is determined by the drilling template hole positioning mechanism 9 and the pressure plate hole positioning mechanism 10. Several positioning holes of the blind hole 8 are drilled. Then the drilling template hole positioning mechanism 9 and the pressure plate hole positioning mechanism 10 are removed, and the radial drilling machine is slowly used to make up-down feed motion to complete the processing of the blind hole 8 of the workpiece 11.

Claims

1. A method for machining blind holes in a metal box component, comprising three steps: tooling preparation, clamping and positioning and parameter selection, and drilling commencement, characterized in that: When preparing the tooling, a special electric drill (7) is selected to complete the setting of the electric drill clamping mold (6), the switch pressure plate mechanism (4), the pressure plate positioning mechanism (10), and the drill template hole positioning mechanism (9). When setting the electric drill clamping mold (6), a rectangular steel sleeve-shaped electric drill clamping mold (6) is set according to the external size and structural characteristics of the electric drill (7). An arc groove is opened at the end of the electric drill clamping mold (6), and the arc groove opening is left open for the position of the drill chuck of the electric drill (7). A reserved opening groove is set at the other end of the electric drill clamping mold (6) to make room for the movement of the switch button of the electric drill (7). Several openings are made on the upper, lower, left and right inner walls of the electric drill clamping mold (6). The threaded through hole facilitates screw positioning when the electric drill (7) is installed; when the switch pressure plate mechanism (4) is set, one end of a machine tool live center (3) is welded to the electric drill clamping mold (6) so that the electric drill (7) can be installed into the electric drill clamping mold (6). The switch pressure plate mechanism (4) is fastened to the electric drill (7) with screws through the pre-reserved opening slot on the electric drill clamping mold (6) and suspended on the switch button of the electric drill (7). After the electric drill (7) is powered on, pressing the switch pressure plate mechanism (4) can control the start and stop of the electric drill (7); the setting of the pressure plate hole positioning mechanism (10) and the drilling template hole positioning mechanism (9) are completed. When clamping and positioning and parameter selection, the clamping plate hole positioning mechanism (10) and the drill template hole positioning mechanism (9) are clamped and positioned on the workpiece (11) to be processed. The electric drill clamping mold (6) is set at the lower part of the spindle (2) of the radial drilling machine. The radial drilling machine is used to control the feed movement of the electric drill (7) in each direction. The detailed parameters and processing position of the blind hole (8) are determined by the clamping plate hole positioning mechanism (10) and the drill template hole positioning mechanism (9). When starting drilling, start the electric drill (7) to ensure its continuous operation. According to the feed adjustment system of the radial drilling machine, accurately control the feed movement of the drill bit and the drilling depth, thereby ensuring the machining accuracy of the blind hole (8) position and depth.

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