Tool for machining cut-off through hole in thin-wall plate-shaped welding workpiece in vertical machining center

Abstract

The invention discloses a tool for machining a cut-off through hole in a thin-wall plate-shaped welding workpiece through a vertical machining center. The tool comprises a clamp body, a positioning pin base, a positioning pin, a cylindrical pin, a double-thread screw, a side pressing plate, a pressing nut, an upper pressing plate, a lower pressing plate, a pair of wedge-shaped positioning blocks and two spring holes. The spring and the elastic cylindrical pin are arranged in each spring hole; and the pair of ball screws is arranged on the reference plane. According to the method, the coaxiality requirement of the cut-off through holes in the thin-wall plate-shaped welding workpiece can be met. The method has the beneficial effects of being simple, reliable, low in cost, low in popularization difficulty, easy and convenient to operate, stable in quality, high in precision and suitable for machining the cut-off through hole in the thin-wall plate-shaped welding workpiece.

Description

Technical Field

[0001] This invention relates to the field of tooling technology used in vertical machining centers, and particularly to a tooling for machining interrupted through holes in thin-walled plate-shaped welded workpieces using a vertical machining center. Background Technology

[0002] Currently, there is a need to process a thin-walled plate-shaped workpiece. This workpiece has two holes, one above the other, that require coaxiality and must be machined in one operation. Machining them separately would fail to meet the coaxiality requirement, while direct machining would result in significant misalignment between the holes, also failing to meet the coaxiality requirement. After considering both processability and economics, it was determined that a vertical machining center is needed to machine the interrupted through holes in the thin-walled plate-shaped welded workpiece. Summary of the Invention

[0003] The purpose of this invention is to solve the problem that existing equipment cannot achieve the coaxiality requirement of the interrupted through holes in thin-walled plate-shaped welded workpieces, and to provide a tooling for machining interrupted through holes in thin-walled plate-shaped welded workpieces using a vertical machining center.

[0004] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0005] A fixture for machining interrupted through holes in thin-walled plate-shaped welded workpieces using a vertical machining center, comprising:

[0006] A clamping body, the clamping body being saddle-shaped, having a reference plane and two columns, the two columns being used to support the reference plane;

[0007] A locating pin seat is provided on the reference plane;

[0008] A positioning pin is disposed on the positioning pin seat, the axis of the positioning pin being perpendicular to the reference plane; the positioning pin provides coarse positioning for the thin-walled plate-shaped welded workpiece placed on the reference plane.

[0009] A cylindrical pin is disposed on the reference plane, the axis of the cylindrical pin being perpendicular to the reference plane;

[0010] A double-ended screw disposed on the side of the reference plane;

[0011] A set of side pressure plates on the double-ended screw;

[0012] A clamping nut is screwed onto the double-ended screw, which presses the side pressure plate on the double-ended screw against the side of the reference plane. The thin-walled plate-shaped welded workpiece is pressed against the cylindrical pin. The rotational freedom of the thin-walled plate-shaped welded workpiece is restricted by the side pressure plate, the double-ended screw, and the clamping nut.

[0013] Two upper pressure plates are fixed on the upper surface of the reference plane, and the upper pressure plates press the thin-walled plate-shaped welded workpiece against the upper surface of the reference plane; each upper pressure plate is positioned by an upper cylindrical pin provided on the upper surface of the reference plane.

[0014] Two lower pressure plates are fixed on the lower surface of the reference plane, and the lower pressure plates press the thin-walled plate-shaped welded workpiece against the lower surface of the reference plane; each lower pressure plate is positioned by a lower cylindrical pin provided on the lower surface of the reference plane.

[0015] A pair of wedge-shaped positioning blocks guide the through holes to be machined in the thin-walled plate-shaped welded workpiece.

[0016] Two spring holes are provided on the reference plane;

[0017] Each spring hole contains a spring and an elastic cylindrical pin, the spring pre-pressing each wedge-shaped positioning block via the elastic cylindrical pin;

[0018] A pair of ball-head screws are mounted on the reference plane, and the ball-head screws fix a wedge-shaped locating block to ensure that the wedge-shaped locating block can meet the stable guiding function during the processing.

[0019] In a preferred embodiment of the present invention, each upper pressure plate is positioned by an upper cylindrical pin disposed on the upper surface of the reference plane; each lower pressure plate is positioned by a lower cylindrical pin disposed on the lower surface of the reference plane.

[0020] By employing the above technical solution, this invention can guarantee the coaxiality requirement of interrupted through holes in thin-walled plate-shaped welded workpieces. The beneficial effects of this invention are: simplicity and reliability, low cost, easy promotion, simple and convenient operation, stable quality, high precision, and suitability for processing interrupted through holes in thin-walled plate-shaped welded workpieces. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of a tooling for machining interrupted through holes in a thin-walled plate-shaped welded workpiece using a vertical machining center according to the present invention.

[0022] Figure 2 This is a front view of a tooling for machining a broken through hole in a thin-walled plate-shaped welded workpiece using a vertical machining center according to the present invention.

[0023] Figure 3 This is a top view of a tooling for machining interrupted through holes in a thin-walled plate-shaped welded workpiece using a vertical machining center according to the present invention.

[0024] In the diagram: 1. Clamp body, 3. Locating pin seat, 4. Locating pin, 5. Wedge-shaped locating block, 6. Ball head screw, 7. Upper pressure plate, 8. Lower pressure plate, 9. Side pressure plate, 10. Double-ended screw, 11. Compression nut, 12. Left support foot, 13. Cylindrical pin 1, 14. Cylindrical pin 2, 15. Right support foot, 16. Spring, 17. Elastic cylindrical pin, 18. Thin-walled plate-shaped welded workpiece. Detailed Implementation

[0025] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0026] See Figures 1 to 3 The tooling shown in the figure for machining a through hole interrupted in a thin-walled plate-shaped welded workpiece by a vertical machining center includes: a clamping body, which is saddle-shaped and has a reference plane 1 and two columns 12 and 15, the two columns 12 and 16 being used to support the reference plane 1.

[0027] A positioning pin seat 3 is provided on the reference plane 1, and a positioning pin 4 is provided on the positioning pin seat 3. The positioning pin 4 performs coarse positioning of the thin-walled plate-shaped welded workpiece 18 placed on the reference plane 1.

[0028] Additionally, a cylindrical pin 13 is set on the reference plane 1, with the axis of the cylindrical pin 13 perpendicular to the reference plane 1. During positioning, the thin-walled plate-shaped welded workpiece 18 is close to the cylindrical pin 13.

[0029] A double-ended screw 10 is installed on the side of the reference plane 1. A side pressure plate 9 is fitted on the double-ended screw 10 and a clamping nut 11 is screwed on it. The clamping nut 11 presses the side pressure plate 9 fitted on the double-ended screw 10 against the side of the reference plane 1. The thin-walled plate-shaped welded workpiece 18 is pressed against the cylindrical pin 13. The rotational freedom of the thin-walled plate-shaped welded workpiece 18 is restricted by the side pressure plate 9, the double-ended screw 10, and the clamping nut 11.

[0030] Two upper pressure plates 7 are fixed on the upper surface of the reference plane 1 by an upper cylindrical pin 14, and the two upper pressure plates 7 press the thin-walled plate-shaped welded workpiece 18 on the upper surface of the reference plane 1; two lower pressure plates 8 are fixed on the lower surface of the reference plane 1 by an upper cylindrical pin, and the two lower pressure plates 8 press the thin-walled plate-shaped welded workpiece 18 on the lower surface of the reference plane 1.

[0031] A pair of wedge-shaped positioning blocks 5 are provided on the lower surface of the reference plane 1. The pair of wedge-shaped positioning blocks 5 guide the through holes to be machined in the thin-walled plate-shaped welded workpiece 18. Spring holes are provided in the reference plane 1 at the positions corresponding to the pair of wedge-shaped positioning blocks 5. A spring 16 and an elastic cylindrical pin 17 are provided in each spring hole. The spring 16 pre-presses each wedge-shaped positioning block 5 through the elastic cylindrical pin 17.

[0032] A pair of ball head screws 6 are installed on the reference plane 1. Each ball head screw 6 fixes a wedge-shaped positioning block 5 to ensure that the wedge-shaped positioning block can meet the stable guiding function during the processing.

[0033] The working principle of this invention is as follows: After the thin-walled plate-shaped welded workpiece 18 is placed into the fixture, the first step is to perform coarse positioning using the locating pin 4. The second step involves pressing the thin-walled plate-shaped welded workpiece 18 against the cylindrical pin 13, and restricting its rotational freedom using the side pressure plate 9, double-ended screw 10, and clamping nut 11. The third step involves pre-pressing the wedge-shaped locating block 5 using the spring 16, ensuring that the through hole to be machined on the thin-walled plate-shaped welded workpiece 18 is guided by the wedge-shaped locating block, guaranteeing the coaxiality of the upper and lower holes during machining. The fourth step involves locking the ball head screw 6 to fix the wedge-shaped locating block 5, ensuring that the wedge-shaped locating block 5 provides stable guidance during machining. This fixture enables the machining of interrupted through holes in thin-walled plate-shaped welded workpieces on a machining center, while also meeting the coaxiality accuracy requirements of the through holes.

[0034] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A tooling for machining a through hole in a thin-walled plate-shaped welded workpiece in a vertical machining center, characterized in that, include: A clamping body, the clamping body being saddle-shaped, having a reference plane and two columns, the two columns being used to support the reference plane; A locating pin seat is provided on the reference plane; A positioning pin is disposed on the positioning pin seat, the axis of the positioning pin being perpendicular to the reference plane; the positioning pin provides coarse positioning for the thin-walled plate-shaped welded workpiece placed on the reference plane. A cylindrical pin is disposed on the reference plane, the axis of the cylindrical pin being perpendicular to the reference plane; A double-ended screw disposed on the side of the reference plane; A set of side pressure plates on the double-ended screw; A clamping nut is screwed onto the double-ended screw, which presses the side pressure plate on the double-ended screw against the side of the reference plane. The thin-walled plate-shaped welded workpiece is pressed against the cylindrical pin. The rotational freedom of the thin-walled plate-shaped welded workpiece is restricted by the side pressure plate, the double-ended screw, and the clamping nut. Two upper pressure plates are fixed on the upper surface of the reference plane, and the upper pressure plates press the thin-walled plate-shaped welded workpiece against the upper surface of the reference plane; each upper pressure plate is positioned by an upper cylindrical pin provided on the upper surface of the reference plane. Two lower pressure plates are fixed on the lower surface of the reference plane, and the lower pressure plates press the thin-walled plate-shaped welded workpiece against the lower surface of the reference plane; each lower pressure plate is positioned by a lower cylindrical pin provided on the lower surface of the reference plane. A pair of wedge-shaped positioning blocks guide the through holes to be machined in the thin-walled plate-shaped welded workpiece. Two spring holes are provided on the reference plane; Each spring hole contains a spring and an elastic cylindrical pin, the spring pre-pressing each wedge-shaped positioning block via the elastic cylindrical pin; A pair of ball-head screws are mounted on the reference plane, and the ball-head screws fix a wedge-shaped locating block to ensure that the wedge-shaped locating block can provide stable guidance during the machining process.

2. A jig for machining a through hole in a thin-walled plate-shaped welded workpiece according to claim 1, wherein Each upper pressure plate is positioned by an upper cylindrical pin on the upper surface of the reference plane; each lower pressure plate is positioned by a lower cylindrical pin on the lower surface of the reference plane.

Images