Clamping tool for machining inclined hole of polyurethane flange plate

Abstract

The utility model relates to the field of machining discloses a kind of clamping tool for polyurethane flange plate inclined hole processing, it is installed on the workbench of universal milling machine, including clamping body and fastening assembly, the middle part of the clamping body is equipped with mounting hole, the fastening assembly is used to fix the clamping body on workbench;The clamping body is by positioning panel, the cushion block of being equipped in the bottom center position of positioning panel, multiple vacuum chuck embedded on positioning panel and the fixed plate for fixing vacuum chuck being equipped in cushion block outside composition, the positioning panel is equipped with multiple positioning pin matched with the flange hole of workpiece, and positioning panel is equipped with corresponding tool setting inclined hole with the inclined hole of workpiece. The utility model can realize tool setting once batch processing, can effectively improve processing efficiency, and the tool has the advantages of high positioning accuracy, clamping is convenient and fast.

Description

Technical Field

[0001] This utility model relates to the field of machining, and in particular to a clamping fixture for machining oblique holes in polyurethane flanges. Background Technology

[0002] There is one as shown in the attached document. Figure 5 The polyurethane flange plate shown requires the machining of an angled hole, located in the middle of two adjacent flange holes. The positional accuracy of the angled hole must be ensured during machining. Using a universal milling machine is a common machining method for this workpiece. Currently, the machining method on the universal milling machine is as follows: Before machining, the angle of the vertical milling head is adjusted according to the inclination angle of the angled hole; then, an annular pad is placed on the worktable, and the workpiece is placed on the annular pad and its position is adjusted; the workpiece and the annular pad are fixed to the worktable together using T-bolts, clamping blocks, and nuts; finally, the tool is set, and the machining of the angled hole is completed. This machining method has the following problems:

[0003] 1. After the workpiece is processed, the nut needs to be loosened, the pressure block removed, and then the clamping and tool setting re-reset. The above operation needs to be repeated for each workpiece, which is time-consuming and labor-intensive.

[0004] 2. The workpiece lacks positioning on the pad, and the position of the workpiece needs to be constantly adjusted each time it is clamped, which makes the processing difficult.

[0005] Meanwhile, due to the characteristics of polyurethane material—softness, high elasticity, low strength, and easy deformation—conventional rigid clamping fixtures can easily damage the workpiece. Therefore, this application provides a clamping fixture for machining oblique holes in polyurethane flanges to solve the above problems. Utility Model Content

[0006] This invention aims to solve the technical problems existing in the prior art. Therefore, this invention provides a clamping fixture for machining oblique holes in polyurethane flange plates with high positioning accuracy and convenient and quick clamping, effectively improving machining efficiency.

[0007] The technical solution adopted by this utility model to solve its technical problem is:

[0008] A clamping fixture for machining oblique holes in polyurethane flanges is provided. It is mounted on the worktable of a universal milling machine and includes a clamping body and a fastening assembly. The clamping body has a mounting hole in its center, and the fastening assembly is used to fix the clamping body to the worktable. The clamping body consists of a positioning panel, a pad located at the bottom center of the positioning panel, multiple vacuum chucks embedded in the positioning panel, and a fixing plate located outside the pad for fixing the vacuum chucks. The positioning panel has multiple positioning pins that match the flange holes of the workpiece, and also has tool-setting oblique holes corresponding to the oblique holes of the workpiece.

[0009] In some alternative embodiments, the positioning panel, pad, and fixing plate are a one-piece structure made of nylon material.

[0010] In some optional embodiments, the bottom center of the pad is further provided with a ridge that matches the groove of the workbench, and the center line of the ridge is coplanar with the axis of the tool setting oblique hole on the vertical plane.

[0011] In some alternative embodiments, at least three locating pins are provided, and the top of the locating pin is a cone shape.

[0012] In some alternative embodiments, the fastening assembly includes a T-screw, a pressure block, and a nut. The T-screw is mounted in a groove in the worktable, the pressure block is used to press the clamp onto the worktable, and the nut secures it.

[0013] In some alternative embodiments, the positioning panel has a convex ring in the middle that matches the inner diameter of the workpiece, and the convex ring has a groove for mounting the pressure block.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] This invention enables batch processing with a single tool setting, effectively improving processing efficiency. Furthermore, the tooling boasts advantages such as high positioning accuracy and convenient and quick clamping. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort, wherein:

[0017] Figure 1 This is a clamping structure diagram of the clamping fixture for machining oblique holes in polyurethane flanges provided by this utility model.

[0018] Figure 2 yes Figure 1 The provided exploded view;

[0019] Figure 3 This is a schematic diagram of the bottom structure of the clamping body of this utility model;

[0020] Figure 4 This is a connection structure diagram of the vacuum suction cup provided by this utility model;

[0021] Figure 5 This is a structural diagram of the finished polyurethane flange plate provided by this utility model.

[0022] The attached diagram lists the components represented by each number as follows:

[0023] 1—Positioning panel, 1.1—Tool setting oblique hole, 1.2—Protruding ring, 1.2.1—Groove, 2—Padded block, 2.1—Protruding strip, 3—Vacuum suction cup, 4—Fixing plate, 5—Positioning pin, 6—Fastening assembly, 6.1—T-screw, 6.2—Pressure block, 6.3—Nut, 7—Vacuum generator, 8—Air compressor, 9—Valve, 10—Workbench, 10.1—Groove, 20—Workpiece, 20.1—Flange hole, 20.2—Oblique hole. Detailed Implementation

[0024] It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0026] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0027] Furthermore, the terms "installation," "connection," and "linking" used in this utility model should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0028] Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0029] Example 1

[0030] As attached Figure 1 As shown, this embodiment provides a clamping fixture for machining oblique holes in polyurethane flanges, which is installed on the worktable 10 of a universal milling machine. It includes a clamping body and a fastening assembly 6. The clamping body has a mounting hole in the middle, and the fastening assembly 6 is used to fix the clamping body on the worktable 10.

[0031] As attached Figure 2 and attached Figure 3 As shown, the clamping device consists of a positioning panel 1, a pad 2, vacuum suction cups 3, and a fixing plate 4. The pad 2 is located at the bottom center of the positioning panel 1. In this embodiment, the positioning panel 1 is a circular plate, and the pad 2 is a circular cylindrical body used to support the positioning panel for easy milling operations. Multiple vacuum suction cups 3 are embedded in the positioning panel 1, and the upper surface of the vacuum suction cups 3 is coplanar with the upper surface of the positioning panel 1. The fixing plate 4 is located on the outside of the pad 2 and is used to fix the vacuum suction cups 3. The positioning panel 1 is provided with multiple positioning pins 5 that match the flange holes 20.1 of the workpiece 20, and the positioning panel 1 is provided with tool setting oblique holes 1.1 corresponding to the oblique holes 20.2 of the workpiece 20.

[0032] Preferably, in this embodiment, the bottom center of the pad 2 is further provided with a protrusion 2.1 that matches the groove 10.1 of the worktable 10, and the center line of the protrusion 2.1 is coplanar with the axis of the tool setting oblique hole 1.1 on the vertical plane. This design enables the tool setting oblique hole to be located on the center line of the positioning panel along the X-axis direction of the worktable after the fixture is installed, facilitating quick movement of the worktable for tool setting operations.

[0033] Preferably, the positioning panel 1, pad 2 and fixing plate 4 in this embodiment are an integral structure made of nylon material.

[0034] Preferably, in this embodiment, at least three positioning pins 5 are provided, and the top of the positioning pin 5 is set as a cone shape, which has a guiding function and facilitates the quick placement of the workpiece on the positioning panel.

[0035] Preferred options are listed below. Figure 4 As shown, each vacuum suction cup 3 is connected to a negative pressure main pipe, which is connected to a vacuum generator 7. The vacuum generator 7 is connected to an air compressor 8 through an air pipe. A valve 9 that controls the air supply is located on the air pipe. When it is necessary to clamp the workpiece, the valve is opened; when it is necessary to remove the workpiece, the valve is closed.

[0036] As attached Figure 2 As shown, the fastening assembly 6 includes a T-screw 6.1, a pressure block 6.2, and a nut 6.3. The T-screw 6.1 is installed in the groove of the worktable, the pressure block 6.2 is used to press the clamp body onto the worktable, and is fastened by the nut 6.3.

[0037] In practice, the processing shall be carried out according to the following steps:

[0038] 1. First, adjust the tilt angle of the vertical milling head according to the slanted hole of the workpiece;

[0039] 2. Fix the fixture to the worktable using the fastening components, adjust the position of the worktable, and complete the tool setting through the tool setting angled hole;

[0040] 3. Place the workpiece on the fixture, open the valve, and the workpiece will be fixed by the vacuum suction cup;

[0041] 4. Complete the machining of the oblique holes on the workpiece;

[0042] 5. Close the valve and remove the workpiece;

[0043] 6. Repeat steps 3 to 5.

[0044] Example 2

[0045] Based on Embodiment 1, this embodiment provides a convex ring 1.2 in the middle of the positioning panel 1 that matches the inner diameter of the workpiece 20. The thickness of the convex ring is not greater than the thickness of the workpiece, and the convex ring 1.2 is provided with a groove 1.2.1 for mounting the pressure block 6.2.

[0046] This design allows for circumferential positioning of the workpiece using the convex ring, and also allows the pressure block to be recessed into the convex ring, making the tooling more aesthetically pleasing.

[0047] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made using the content of this utility model specification, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A clamping fixture for machining oblique holes in a polyurethane flange plate, characterized in that: The fixture is installed on the worktable of the universal milling machine and includes a clamping body and a fastening assembly. The clamping body has a mounting hole in the middle and the fastening assembly is used to fix the clamping body on the worktable. The clamping device consists of a positioning panel, a pad located at the bottom center of the positioning panel, multiple vacuum suction cups embedded in the positioning panel, and a fixing plate located on the outside of the pad for fixing the vacuum suction cups. The positioning panel is provided with multiple positioning pins that match the flange holes of the workpiece, and the positioning panel is provided with tool setting oblique holes that correspond to the oblique holes of the workpiece.

2. The clamping fixture for machining oblique holes in polyurethane flanges according to claim 1, characterized in that: The positioning panel, pad, and fixing plate are an integrated structure made of nylon material.

3. The clamping fixture for machining oblique holes in polyurethane flanges according to claim 1, characterized in that: The bottom center of the pad is also provided with a raised strip that matches the groove of the workbench, and the center line of the raised strip is coplanar with the axis of the tool setting oblique hole on the vertical plane.

4. The clamping fixture for machining oblique holes in polyurethane flanges according to claim 1, characterized in that: The locating pins are provided in at least 3 parts, and the top of the locating pins is set as a cone shape.

5. The clamping fixture for machining oblique holes in polyurethane flanges according to claim 1, characterized in that: The fastening assembly includes a T-screw, a pressure block, and a nut. The T-screw is installed in a groove in the worktable, the pressure block is used to press the clamp onto the worktable, and the nut is used to fasten it.

6. The clamping fixture for machining oblique holes in polyurethane flanges according to claim 5, characterized in that: The positioning panel has a convex ring in the middle that matches the inner diameter of the workpiece, and the convex ring has a groove for installing the pressure block.

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