Multi-diameter stepped hole machining device

Abstract

The utility model provides a multi-diameter stepped hole machining device which solves the problems that when an existing multi-diameter stepped hole machining device is used for machining, tools need to be replaced frequently, use is tedious, and production efficiency is not high. Comprising a cutter body and a cutter holder, and a cutter holder containing groove is formed in the cutter body; the tool holder comprises an axial adjusting block and a radial adjusting block, the axial adjusting block is connected into the tool holder containing groove through a telescopic adjusting assembly, a through axial adjusting groove is formed in the axial adjusting block, and the axial adjusting block is fixed to the tool body through cooperation of the axial adjusting groove and an axial adjusting groove locking nut. The tail end of the axial adjusting block is slidably connected with a radial adjusting block in the horizontal direction, the radial adjusting block is provided with a through radial adjusting groove, and the radial adjusting block is fixed to the axial adjusting block through matching of the radial adjusting groove and a radial adjusting groove locking nut. And the radial adjusting block is fixedly connected with a boring blade. The utility model is widely applied to the technical field of machining equipment.

Description

Technical Field

[0001] The present application relates to the technical field of machining equipment, and more specifically, to a multi-diameter stepped hole machining device. Background Art

[0002] Currently, when machining multi-diameter stepped holes, according to the process and production requirements, multiple boring tools with different machining sizes are usually used for machining, resulting in an increased demand for the quantity, size, and variety of boring tools, an increase in tool costs, and a relatively high machining cost for multi-diameter stepped holes. During the actual machining process, replacing the boring tool easily causes tool wear, and due to the excessive number of tools, tool changing time is generated. At this time, the tool body cannot be machined, affecting the machining efficiency of the stepped hole, and the efficiency is low. At the same time, frequent replacement of the boring tool will gradually accumulate errors, affecting the machining accuracy of the stepped hole, causing errors in the coaxiality and step height of the stepped hole, affecting subsequent processes, and being not convenient for popularization and batch production.

[0003] In addition, the outer side of the machined step surface is a sharp angle, resulting in the product being prone to scratching the sealing ring during the assembly process, affecting the installation of subsequent bearings. When the bottommost hole is a blind hole, a milling cutter is required to mill the bottom surface and then bore the hole, and this process is prone to tool marks, affecting the appearance of the product.

[0004] Therefore, there is an urgent need for a multi-diameter stepped hole machining device that does not require frequent replacement of boring tools with different sizes, is convenient to use, and has high machining efficiency to meet the current production and machining needs. Summary of the Utility Model

[0005] In order to solve the above-mentioned existing problems, the technical solution adopted by the present utility model is: to provide a multi-diameter stepped hole machining device, which solves the problems that the existing multi-diameter stepped hole machining device needs to frequently replace tools during machining, is cumbersome to use, and has low production efficiency. It includes a tool body and a tool holder. A tool holder placement groove is provided on the tool body.

[0006] The tool holder includes an axial adjustment block and a radial adjustment block. An axial adjustment block is connected to the tool holder placement groove through a telescopic adjustment component. The axial adjustment block is provided with a through axial adjustment groove, and the axial adjustment block is fixed to the tool body through the cooperation of the axial adjustment groove and the axial adjustment groove locking nut. The end of the axial adjustment block is slidably connected to the radial adjustment block in the horizontal direction. The radial adjustment block is provided with a through radial adjustment groove, and the radial adjustment block is fixed to the axial adjustment block through the cooperation of the radial adjustment groove and the radial adjustment groove locking nut. A boring blade is fixedly connected to the radial adjustment block.

[0007] Preferably, the axial adjustment block is provided with a positioning boss, and the radial adjustment block is provided with a positioning groove that cooperates with the positioning boss. The positioning boss and the positioning groove are slidably connected in the horizontal direction.

[0008] Preferably, a bottom cutting blade and a center-passing bottom cutting blade are horizontally provided at the bottom of the tool body.

[0009] Preferably, the boring blade is triangular, and the rotation angle of the boring blade can be adjusted in advance.

[0010] Preferably, the adjusting component is a tightening nut.

[0011] Preferably, the number of tool holder placement grooves is multiple, and the number of tool holders corresponds to the tool holder placement grooves; the tool holder placement grooves are distributed at both ends of the tool body.

[0012] The beneficial effects of the present utility model are as follows: The tool holder includes an axial adjusting block and a radial adjusting block. By adjusting the position of the axial adjusting block in the axial direction and the position of the radial adjusting block in the radial direction, the rapid adjustment of the axial and radial positions of the boring blade can be realized, meeting the processing requirements of different aperture tolerances and depth dimensions of multi-diameter stepped holes. It has a wide application range, convenient adjustment operation, no need to replace or disassemble the boring blade, and no need to prepare boring blades of multiple sizes, avoiding wear during the replacement of the boring blade, reducing the processing cost, and improving the processing efficiency of multi-diameter stepped holes. When installing the boring blade, the installation angle of the boring blade can be adjusted, which is convenient to adjust and can meet various chamfering requirements, solving the problem of poor assembly of the sealing ring and bearing caused by the sharp corners of the stepped surface after processing. The tool holder can be disassembled and replaced as a whole, avoiding the separate replacement of the boring blade, enabling rapid installation and disassembly, with simple operation, reducing the production cost, and being convenient for batch promotion and use. Description of the Drawings

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the following drawings are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0014] Figure 1 is a schematic structural diagram of the whole tool;

[0015] Figure 2 is a schematic structural diagram of the tool holder;

[0016] Figure 3 is a schematic structural diagram of the axial adjusting block;

[0017] Figure 4 is a schematic sectional view of the radial adjusting block;

[0018] Figure 5 is a schematic sectional view of the axial adjusting block and the radial adjusting block;

[0019] Figure 6 is a schematic structural diagram of synchronous machining of four diameters;

[0020] Symbols in the figure: 1. Tool holder placement groove; 2. Tightening nut; 3. Axial adjustment groove; 4. Axial adjustment block; 5. Radial adjustment groove; 6. Radial adjustment block; 7. Boring blade; 8. Axial adjustment groove locking nut; 9. Radial adjustment groove locking nut; 10. Tool body; 11. Undercut blade; 12. Undercut blade passing through the center; 13. Positioning boss; 14. Positioning groove. Detailed implementation manners

[0021] In order to make the technical problems, technical solutions and beneficial effects to be solved by this application clearer, the following further details this application in conjunction with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not used to limit this application.

[0022] It should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing this application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to this application.

[0023] It should be noted that the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of this application, "a plurality" means two or more, unless otherwise specifically defined.

[0024] A multi-diameter stepped hole machining device provided by an embodiment of this application will now be described.

[0025] Please refer to Figure 1 , which is a schematic structural diagram of the whole tool. The multi-diameter stepped hole machining device includes a tool body 10 and a tool holder. A tool holder placement groove 1 is provided on the tool body 10; the tool holder includes an axial adjustment block 4 and a radial adjustment block 6. An axial adjustment block 4 is connected to the tool holder placement groove 1 through a telescopic adjustment component. The axial adjustment block 4 is provided with a through axial adjustment groove 3. The axial adjustment block 4 is fixed to the tool body 10 through the cooperation of the axial adjustment groove 3 and the axial adjustment groove locking nut 8; a radial adjustment block 6 is slidably connected to the end of the axial adjustment block 4 in the horizontal direction. The radial adjustment block 6 is provided with a through radial adjustment groove 5. The radial adjustment block 6 is fixed to the axial adjustment block 4 through the cooperation of the radial adjustment groove 5 and the radial adjustment groove locking nut 9; a boring blade 7 is fixedly connected to the radial adjustment block 6.

[0026] Specifically, please refer to Figure 2 , which is a schematic structural diagram of the tool holder. During use, the operator can adjust the axial position of the axial adjustment block 4 by adjusting the length of the adjustment component. When the axial adjustment block 4 moves to the specified position, tighten the locking nut 8 in the axial adjustment groove at this time to fix the axial adjustment block 4, completing the adjustment of the axial position of the boring blade 7; the radial adjustment block 6 is slidably connected to the axial adjustment block 4 in the horizontal direction and can adjust the radial position of the radial adjustment block 6. When the radial adjustment block 6 slides to the specified position, tighten the locking nut 9 in the radial adjustment groove at this time to fix the radial adjustment block 6, completing the adjustment of the radial position of the boring blade 7. Thus, the axial and radial positions of the boring blade 7 are adjusted, meeting the processing requirements for different aperture tolerances and depth dimensions of multi-diameter stepped holes. It has a wide range of applications, convenient adjustment operations, does not require replacing or disassembling the boring blade 7, nor does it need to prepare boring blades 7 of multiple sizes, avoiding wear during the replacement of the boring blade 7, reducing processing costs, and improving the processing efficiency of multi-diameter stepped holes. The tool holder can be disassembled and replaced as a whole, avoiding the need to replace the boring blade 7 alone, enabling quick installation and disassembly, with simple operations, reducing production costs, and facilitating mass promotion and use.

[0027] Specifically, please refer to Figures 3 to 5 , the axial adjustment block 4 is provided with a positioning boss 13, and the radial adjustment block 6 is provided with a positioning groove 14 that cooperates with the positioning boss 13. The positioning boss 13 and the positioning groove 14 are slidably connected in the horizontal direction, thereby realizing the adjustment of the radial position of the boring blade 7.

[0028] Furthermore, please refer to Figure 1 and Figure 6 , a bottom cutting blade 11 and a center-through bottom cutting blade 12 are horizontally provided at the bottom of the tool body 10. Adding the bottom cutting blade 11 and the center-through bottom cutting blade 12 with the same height as the bottommost blade seat at the bottom of the tool body 10 can machine the bottom of the blind hole to achieve bottom cutting, avoid the appearance of tool joint marks, and protect the product appearance.

[0029] Specifically, please refer to Figure 1 and Figure 2 , the boring blade 7 is triangular, and the rotation angle of the boring blade 7 can be adjusted in advance. When installing the boring blade 7, the installation angle of the boring blade 7 can be adjusted. Rotate the boring blade 7 to the specified angle according to the chamfering requirement, and then fix the boring blade 7 through fixing connectors including but not limited to locking bolts, enabling it to stably chamfer the stepped surface after machining the hole. The rotation angle of the boring blade 7 is conveniently adjustable, meeting various chamfering requirements, solving the problem of poor assembly of the sealing ring and bearing caused by the sharp corners of the stepped surface after machining; it has a wide range of applications and reduces the processing cost of the stepped hole.

[0030] Specifically, in one embodiment, the adjusting component is the tightening nut 2; during use, the operator manually rotates the tightening nut 2 to adjust the screwing length of the tightening nut 2, thereby adjusting the axial position of the axial adjusting block 4. The operation is convenient, and the structure of the tightening nut 2 is simple, which is convenient for large-scale popularization.

[0031] Further, please refer to Figure 1 and Figure 6 , the number of tool holder placement grooves 1 is multiple, which is set according to the processing requirements of multi-diameter stepped holes. The number of tool holders corresponds to the tool holder placement grooves 1; the tool holder placement grooves 1 are distributed at both ends of the tool body 10. In this embodiment, the number of both the tool holder placement grooves 1 and the tool holders is four.

[0032] The usage method of the present utility model is as follows: When using it for the first time, the operator first adjusts the axial position of the axial adjusting block 4 according to the theoretical values of the hole diameter and depth in the drawing, and at the same time adjusts the radial position of the radial adjusting block 6 to complete the adjustment of the axial and radial positions of the boring blade 7; when installing the boring blade 7, according to the chamfering requirements of the stepped surface, the rotation angle of the boring blade 7 is pre-adjusted in advance so that it can complete the chamfering processing. At this time, the axial and radial positions of the tips of each tool holder basically correspond to the drawing, and then the product is processed.

[0033] After the processing is completed, the operator measures the deviation of the stepped hole diameter and depth. If the size is appropriate, the boring blade 7 does not need to be adjusted again and can continue to be processed; if there is a deviation in the size, the axial adjustment groove locking nut 8 needs to be loosened first, and the axial position of the boring blade 7 is adjusted. After completion, the axial adjustment locking groove bolt 8 is fixed; the radial adjustment groove nut 9 is loosened, and the radial position of the boring blade 7 is adjusted. After completion, the radial adjustment groove locking nut 9 is fixed to ensure that the position of the boring blade 7 is accurate and reliable. Then, by adjusting the screwing length of the tightening nut 2, the end of the locking nut 2 is tightly pressed against the inner side of the tool holder placement groove 1 to avoid the situation that the axial force causes the tool holder position to move during the processing.

[0034] In the present utility model, the tool holder includes an axial adjustment block 4 and a radial adjustment block 6. By adjusting the axial position of the axial adjustment block 4 and the radial position of the radial adjustment block 6, the quick adjustment of the axial and radial positions of the boring blade 7 can be achieved, meeting the processing requirements of different aperture tolerances and depth dimensions of multi-diameter stepped holes. It has a wide application range, convenient adjustment operation, no need to replace or disassemble the boring blade 7, nor to prepare boring blades 7 of multiple sizes, avoiding wear during the replacement of the boring blade 7, reducing the processing cost, and improving the processing efficiency of multi-diameter stepped holes. When installing the boring blade 7, the installation angle of the boring blade 7 can be adjusted, which is convenient to adjust and can meet various chamfering requirements, solving the problem of poor assembly of the sealing ring and bearing caused by the sharp corners of the stepped surface after processing. The tool holder can be disassembled and replaced as a whole, avoiding the separate replacement of the boring blade 7, and can be quickly installed and disassembled, with simple operation, reducing the production cost and facilitating mass production and popularization.

[0035] The above-described embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the present application, and should all be included in the protection scope of the present application.

Claims

1. A multi-diameter stepped hole machining device, comprising a tool body (10) and a tool holder, wherein the tool body (10) is provided with a tool holder placement groove (1), characterized in that: The tool holder comprises an axial adjustment block (4) and a radial adjustment block (6); the axial adjustment block (4) is connected to the tool holder placement groove (1) via a retractable adjustment component; the axial adjustment block (4) is provided with a through axial adjustment groove (3); the axial adjustment block (4) is fixed to the tool body (10) by the cooperation between the axial adjustment groove (3) and an axial adjustment groove locking nut (8); the end of the axial adjustment block (4) is slidably connected to the radial adjustment block (6) in a horizontal direction; the radial adjustment block (6) is provided with a through radial adjustment groove (5); the radial adjustment block (6) is fixed to the axial adjustment block (4) by the cooperation between the radial adjustment groove (5) and a radial adjustment groove locking nut (9); a boring blade (7) is fixedly connected to the radial adjustment block (6).

2. A multi-diameter step hole machining device as claimed in claim 1, characterized in that: The axial adjustment block (4) is provided with a positioning boss (13), and the radial adjustment block (6) is provided with a positioning groove (14) that cooperates with the positioning boss (13), and the positioning boss (13) and the positioning groove (14) are slidably connected in a horizontal direction.

3. A multi-diameter step hole machining device as claimed in claim 1, characterized in that: An undercutting blade (11) and an over-center undercutting blade (12) are horizontally arranged at the bottom of the knife body (10).

4. A multi-diameter step hole machining device as claimed in claim 1, characterized in that: The boring blade (7) is triangular in shape, and the rotation angle of the boring blade (7) can be adjusted in advance.

5. The multi-diameter step hole machining device according to claim 1, characterized in that: The adjustment component is a tightening nut (2).

6. A multi-diameter step hole machining device according to any one of claims 1 to 5, characterized in that: The number of the tool holder placement grooves (1) is multiple, and the number of the tool holders corresponds to the number of the tool holder placement grooves (1); the tool holder placement grooves (1) are distributed at both ends of the tool body (10).

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