Device for machining inner hole of non-rotary body tetragonal body

Abstract

The utility model discloses a device for machining a non-revolving body tetragonal inner hole, which comprises a cylinder, a tetragonal workpiece placing cavity is inwards arranged on one side end face of the cylinder, the central axis of the cylinder is overlapped with the central axis of the tetragonal workpiece placing cavity, a fastening screw is screwed into a threaded hole on the cylinder in a threaded manner, and the fastening screw is screwed into the threaded hole on the cylinder. The fastening screws penetrate through two adjacent side walls of the square workpiece containing cavity, and the other two side walls, not provided with the fastening screws in a penetrating mode, of the square workpiece containing cavity form a datum plane. The device has the function of aligning the surface center of the round hole of the square workpiece. After the square workpiece is clamped, the center of circle of the inner hole of the square workpiece can be fixed by aligning the outer circle of the tool, and then machining is carried out, so that a traditional coordinate point finding process is replaced, rapid clamping is achieved, and tool setting and point finding are not needed. When the device is clamped on a lathe or an internal grinding machine or other machine tools, the inner hole of the non-rotating body tetragonal body can be machined on a numerical control lathe or an internal grinding machine or other machine tools, and the machining efficiency of the inner hole of the tetragonal body is improved.

Description

Technical Field

[0001] This utility model relates to a clamping device, and in particular to a device for machining the internal hole of a non-rotating cuboid. Background Technology

[0002] In the field of machining, the processing of square parts is currently mostly done using milling machines with point coordinate programming. While this method is mature and reliable, it still has shortcomings, mainly: milling machine clamping and tool setting are relatively cumbersome, requiring individual clamping and tool setting, which is time-consuming. Furthermore, milling machine processing is time-consuming and inefficient. Summary of the Invention

[0003] The purpose of this invention is to provide a device for machining the internal hole of a non-rotating cuboid body. This solves the problem of long machining time for existing cuboid parts, enables CNC lathe machining, reduces assembly and disassembly steps, allows for rapid clamping, eliminates the need for tool setting and point finding, and improves machining efficiency.

[0004] The technical solution of this utility model is as follows: A device for processing the internal hole of a non-rotating cuboid body includes a cylinder, a cuboid workpiece placement cavity is provided inward from one end of the cylinder, the central axis of the cylinder coincides with the central axis of the cuboid workpiece placement cavity, a threaded hole is also provided on the cylinder, a fastening screw is screwed into the threaded hole, the fastening screw penetrates to two adjacent side walls of the cuboid workpiece placement cavity, and the other two side walls of the cuboid workpiece placement cavity that are not penetrated by the fastening screw form a reference surface.

[0005] In the aforementioned apparatus for processing non-rotating cubic internal holes, arc-shaped degassing holes are provided at the four corners of the cubic workpiece placement cavity.

[0006] In the aforementioned apparatus for processing non-rotating cubic internal holes, the bottom of the cubic workpiece placement cavity is connected to the other end face of the cylinder via a through hole, the size of which is smaller than that of the cubic workpiece placement cavity.

[0007] In the aforementioned apparatus for machining the inner hole of a non-rotating cuboid, a countersunk hole is provided on the outer periphery of the cylinder, and a fastening screw is provided at the countersunk hole.

[0008] The beneficial effects of this utility model are as follows: Compared with the prior art, this utility model, by setting a square workpiece placement cavity inside the cylinder that coincides with its central axis, ensures that the central axes of the square parts being machined are coincident when clamped on the device. Therefore, this device has the function of aligning the center of the circular hole surface of the square workpiece. After clamping the square workpiece, the center of the inner hole of the square workpiece can be fixed by aligning the outer circle of the fixture, and then machining can be performed. This replaces the traditional coordinate finding process, achieving rapid clamping without the need for tool setting and finding the center. When the device is clamped on a lathe or internal grinding machine, it can realize the machining of non-rotating square inner holes on CNC lathes or internal grinding machines, improving the machining efficiency of square inner holes.

[0009] This utility model has a simple structure and changes the original installation and disassembly method of milling square workpieces. It realizes the machining of non-rotating square inner holes on CNC lathes, which is easy to install and improves the machining speed. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of this utility model;

[0011] Figure 2 for Figure 1 A cross-sectional structural diagram.

[0012] Reference numerals: 1-cylinder, 2-square workpiece placement cavity, 3-fastening screw, 4-arc vent hole, 5-through hole, 6-counterhole. Detailed Implementation

[0013] The present invention will be further described below with reference to the accompanying drawings and embodiments, but this should not be construed as limiting the present invention.

[0014] An embodiment of this utility model: A device for processing a non-rotating cuboid internal hole includes a cylinder 1. A cuboid workpiece placement cavity 2 is provided inward from one end of the cylinder 1. The central axis of the cylinder 1 coincides with the central axis of the cuboid workpiece placement cavity 2. A threaded hole is also provided on the cylinder 1. A fastening screw 3 is screwed into the threaded hole. The fastening screw 3 penetrates to two adjacent side walls of the cuboid workpiece placement cavity 2. The other two side walls of the cuboid workpiece placement cavity 2 that are not penetrated by the fastening screw 3 form a reference surface.

[0015] This device aligns the central axis of its main body with the central axis of the square workpiece placement cavity 2, and the dimensions of the square workpiece placement cavity 2 are better matched to the square part being machined. This ensures that after the square part is placed in the square workpiece placement cavity 2, the central axis of the cylinder 1 coincides with the central axis of the workpiece. Therefore, this device has the function of aligning the center of the circular hole surface of the square workpiece. After clamping the square workpiece, the center of the inner hole of the workpiece can be fixed by aligning the outer circle of the fixture, and then machining can be performed, replacing the traditional coordinate point finding process. After the square workpiece is placed in the square workpiece placement cavity 2, the fastening screws 3 are tightened to fix the square workpiece. The other two side walls of the square workpiece placement cavity 2, which are not penetrated by the fastening screws 3, form the positioning reference surface of the square workpiece.

[0016] The four corners of the square workpiece placement cavity 2 are provided with arc-shaped degassing holes 4. The arc-shaped degassing holes 4 can avoid the problem of difficulty in disassembly after the two sides are tightly attached, and can help installers to quickly install and disassemble, thus improving installation efficiency.

[0017] The reference surface is a reference surface with a surface roughness of 3.2 or higher. The reference surface is used as the clamping reference for the workpiece. Before machining the square workpiece, the two surfaces that mate with it also need to be machined first to ensure that the device coincides with the center of the circular hole of the square workpiece, thereby ensuring the machining quality of the workpiece.

[0018] The bottom of the square workpiece placement cavity 2 is connected to the other end face of the cylinder 1 through the through hole 5. The size of the through hole 5 is smaller than that of the square workpiece placement cavity 2. When the inner hole of the square workpiece is machined and the workpiece is not easy to remove, the square workpiece can be easily removed by pushing it from the through hole 5.

[0019] The cylinder 1 has a countersunk hole 6 on its outer circumference, and the fastening screw 3 is set in the countersunk hole 6, so that the surface of the cylinder 1 is smooth and it is easy to clamp and fix when it is fixed on a lathe or internal grinding machine.

[0020] The tool of this invention can be adjusted according to the workpiece structure and external dimensions, and is not limited by the product structure.

Claims

1. An apparatus for machining the internal hole of a non-rotating cuboid, characterized in that: It includes a cylinder (1), and a square workpiece placement cavity (2) is provided inward from one end of the cylinder (1). The central axis of the cylinder (1) coincides with the central axis of the square workpiece placement cavity (2). A threaded hole is also provided on the cylinder (1). A fastening screw (3) is screwed into the threaded hole. The fastening screw (3) penetrates to two adjacent side walls of the square workpiece placement cavity (2). The other two side walls of the square workpiece placement cavity (2) that are not penetrated by the fastening screw (3) form a reference surface.

2. The apparatus for machining a non-rotating cuboid internal hole according to claim 1, characterized in that: The four corners of the square workpiece placement cavity (2) are provided with arc-shaped degassing holes (4).

3. The apparatus for machining a non-rotating cuboid internal hole according to claim 1, characterized in that: The bottom of the square workpiece placement cavity (2) is connected to the other end face of the cylinder (1) through a through hole (5), and the size of the through hole (5) is smaller than that of the square workpiece placement cavity (2).

4. The apparatus for machining a non-rotating cuboid internal hole according to claim 1, characterized in that: The cylinder (1) has a countersunk hole (6) on its outer periphery, and the fastening screw (3) is located at the countersunk hole (6).

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