Cutter bar for machining inner cambered surface

Abstract

The utility model relates to the technical field of milling cutter bars, and discloses a cutter bar for machining an inner cambered surface, which comprises a fixed block, a bolt is inserted into a through hole at the front end of the fixed block, a cutter bar is rotatably mounted in the middle of the outer side wall of the bolt through a rotating sleeve, an angle sensor is mounted at the top of the rotating sleeve, and a gear is fixedly mounted at the bottom of the rotating sleeve. The outer side wall of the gear is connected with a rack in a meshed mode, and the power input end of the rack is connected with the power output end of an electric telescopic rod. The overall rotating angle of the cutter bar and the rotating sleeve can be accurately detected through the angle sensor, the device is more suitable for accurate machining, the driving assembly for automatically driving the cutter bar and the rotating sleeve to rotate integrally is arranged, and automatic machining of the inner cambered surface can be achieved by rotating the cutter bar in a full-automatic reciprocating mode.

Description

Technical Field

[0001] This utility model relates to the field of milling cutter holder technology, specifically a cutter holder for machining inner arc surfaces. Background Technology

[0002] In the manufacturing process using a conventional lathe, if a situation arises where an inner arc needs to be cut into the end face, it tests the worker's proficiency in using the lathe and the skill in coordinating the operation of the cutting tool with both hands. It is not possible to automate the machining of the inner arc surface with high precision. Utility Model Content

[0003] The purpose of this invention is to provide a tool holder for machining inner arc surfaces. The tool holder disclosed in this invention achieves the machining of inner arc surfaces by rotating a rotatable tool holder mounted on the top of a fixed block. An angle sensor can accurately detect the rotation angle of the tool holder and the rotating sleeve as a whole, making it more suitable for precision machining. Furthermore, it is equipped with a drive assembly that automatically drives the rotation of the tool holder and the rotating sleeve as a whole, enabling fully automated reciprocating rotation of the tool holder to achieve automatic machining of inner arc surfaces, thereby solving the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a tool holder for machining inner arc surfaces, comprising a fixing block, a bolt inserted into a through hole at the front end of the fixing block, a tool holder rotatably mounted on the middle of the outer side wall of the bolt via a rotating sleeve, an angle sensor mounted on the top of the rotating sleeve, a gear fixedly mounted on the bottom of the rotating sleeve, a rack meshing with the outer side wall of the gear, and a power input end of the rack connected to the power output end of an electric telescopic rod.

[0005] Preferably, the electric telescopic rod is fixedly mounted on top of the fixed block via a mounting plate.

[0006] Preferably, the upper part of the bolt is threaded with an upper fastening nut, and the upper fastening nut limits the rotating sleeve and the tool holder as a whole.

[0007] Preferably, the lower part of the bolt is threaded with a lower fastening nut, and the top of the lower fastening nut is in close contact with the bottom of the fixing block.

[0008] Preferably, a guide slide is fixedly connected to the bottom of the rack, a guide groove is provided on the top of the fixing block, and a guide slide is slidably connected to the inner side wall of the guide groove.

[0009] Preferably, the tail of the fixing block is clamped on the tool post of the lathe, and the fixing block is made of metal.

[0010] Compared with the prior art, the beneficial effects of this utility model are:

[0011] The tool holder disclosed in this utility model for machining inner arc surfaces achieves machining of inner arc surfaces by rotating a rotatable tool holder mounted on the top of a fixed block. An angle sensor can accurately detect the rotation angle of the tool holder and the rotating sleeve as a whole, making it more suitable for precision machining. Furthermore, it is equipped with a drive assembly that automatically drives the tool holder and the rotating sleeve to rotate, enabling fully automated reciprocating rotation of the tool holder to achieve automatic machining of inner arc surfaces. This solves the problem that existing tool holders for machining inner arc surfaces cannot achieve precise automated machining of inner arc surfaces. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0013] Figure 2 for Figure 1 Schematic diagram of the structure at point A;

[0014] Figure 3 This is a schematic diagram of the overall structure of this utility model.

[0015] In the diagram: 1. Fixing block; 2. Electric telescopic rod; 3. Mounting plate; 4. Rack; 5. Gear; 6. Rotating sleeve; 7. Tool bar; 8. Angle sensor; 9. Upper fastening nut; 10. Bolt; 11. Guide slide; 12. Guide slide groove; 13. Lower fastening nut. Detailed Implementation

[0016] 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] Please see Figures 1-3 The figure shows a tool holder for machining inner arc surfaces, including a fixing block 1. A bolt 10 is inserted into a through hole at the front end of the fixing block 1. A tool holder 7 is rotatably mounted on the middle of the outer side wall of the bolt 10 via a rotating sleeve 6. An angle sensor 8 is mounted on the top of the rotating sleeve 6. A gear 5 is fixedly mounted on the bottom of the rotating sleeve 6. A rack 4 is meshed with the outer side wall of the gear 5. The power input end of the rack 4 is connected to the power output end of an electric telescopic rod 2. The tool holder 7 disclosed in this utility model for machining inner arc surfaces achieves the machining of inner arc surfaces through a rotatable tool holder 7 rotatably mounted on the top of the fixing block 1. The angle sensor 8 can accurately detect the overall rotation angle of the tool holder 7 and the rotating sleeve 6, making it more suitable for precision machining. It is also equipped with a drive assembly that automatically drives the tool holder 7 and the rotating sleeve 6 to rotate, enabling fully automated reciprocating rotation of the tool holder 7 to achieve automatic machining of inner arc surfaces.

[0018] Furthermore, the electric telescopic rod 2 is fixedly installed on the top of the fixed block 1 via the mounting plate 3, facilitating the installation of the electric telescopic rod 2; furthermore, the upper part of the bolt 10 is threadedly connected to the upper fastening nut 9, and the upper fastening nut 9 limits the rotating sleeve 6 and the tool holder 7 as a whole, providing a good limiting effect; furthermore, the lower part of the bolt 10 is threadedly connected to the lower fastening nut 13, with the top of the lower fastening nut 13 tightly attached to the bottom of the fixed block 1, providing a good limiting effect; furthermore, the bottom of the rack 4 is fixedly connected to the guide slide 11, and the top of the fixed block 1 has a guide slide groove 12, with the guide slide 11 slidably connected to the inner wall of the guide slide groove 12, allowing the rack 4 to slide smoothly; furthermore, the tail of the fixed block 1 is clamped on the tool post of the lathe, and the fixed block 1 is made of metal, making it convenient to use and with a long service life.

[0019] In this solution, during use, the tool holder 7 for machining the inner arc surface disclosed in this utility model is rotatably mounted on the top of the fixed block 1 to achieve the machining of the inner arc surface. The rotation angle of the tool holder 7 and the rotating sleeve 6 as a whole can be accurately detected by the angle sensor 8, which is more suitable for precision machining. It is also equipped with a drive assembly that automatically drives the tool holder 7 and the rotating sleeve 6 to rotate as a whole, which can automatically reciprocate the tool holder 7 to achieve the automatic machining of the inner arc surface. First, the tail of the fixed block 1 is clamped on the tool post of the lathe. Next, clamp the workpiece to be processed onto the lathe's rotating frame. First, thread the upper fastening nut 9 onto the upper part of the bolt 10. Pass the rotating sleeve 6 through the bolt 10, so that the tool holder 7 fixedly connected to the rotating sleeve 6 faces forward. Pass the tail of the bolt 10 through the front through hole of the fixing block 1, and fasten it to the tail of the bolt 10 with the lower fastening nut 13. The limiting bolt 10 prevents the bolt 10 from sliding upwards. Tighten the upper fastening nut 9 downwards to limit the rotating sleeve 6, preventing the rotating sleeve 6 and the tool holder 7 from sliding upwards as a whole. The clamping position of the depth adjustment fixing block 1 of the inner arc surface to be processed is determined. The width value of the inner arc surface to be processed is input into the external control panel. The angle of rotation of the rotating sleeve 6 and the tool bar 7 is calculated by the pre-written program in the control panel. The external power supply controls the electric telescopic rod 2 to reciprocate and extend to the set length through the control panel. When the electric telescopic rod 2 extends, it drives the rack 4 to move forward. Since the rack 4 is externally meshed with the gear 5, the gear 5 rotates counterclockwise. The gear 5, rotating sleeve 6 and tool bar 7 rotate counterclockwise as a whole. The tool bar 7 rotates to the left for processing. When the angle sensor 8 detects that the angle of rotation to the left has reached the set value, the electric telescopic rod 2 shortens and drives the rack 4 to move backward. Since the rack 4 is externally meshed with the gear 5, the gear 5 rotates clockwise. The gear 5, rotating sleeve 6 and tool bar 7 rotate clockwise as a whole. The tool bar 7 rotates to the right for processing. This reciprocating motion can accurately and automatically process the inner arc surface (the electric telescopic rod 2 and the angle sensor 8 are both existing products on the market).

[0020] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0021] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A tool holder for machining inner arc surfaces, comprising a fixing block (1), characterized in that: A bolt (10) is inserted into the through hole at the front end of the fixing block (1). A tool bar (7) is rotatably installed on the middle of the outer side wall of the bolt (10) through a rotating sleeve (6). An angle sensor (8) is installed on the top of the rotating sleeve (6). A gear (5) is fixedly installed on the bottom of the rotating sleeve (6). A rack (4) is meshed on the outer side wall of the gear (5). The power input end of the rack (4) is connected to the power output end of the electric telescopic rod (2).

2. The tool holder for machining inner arc surfaces according to claim 1, characterized in that: The electric telescopic rod (2) is fixedly installed on the top of the fixed block (1) by the mounting plate (3).

3. A tool holder for machining inner arc surfaces according to claim 1, characterized in that: The upper threaded part of the bolt (10) is connected to the upper fastening nut (9), and the upper fastening nut (9) limits the rotating sleeve (6) and the tool bar (7) as a whole.

4. A tool holder for machining inner arc surfaces according to claim 3, characterized in that: The lower part of the bolt (10) is threaded with a lower fastening nut (13), and the top of the lower fastening nut (13) is in close contact with the bottom of the fixing block (1).

5. A tool holder for machining inner arc surfaces according to claim 1, characterized in that: The bottom of the rack (4) is fixedly connected to a guide slide (11), and the top of the fixed block (1) is provided with a guide slide groove (12), and the inner side wall of the guide slide groove (12) is slidably connected to the guide slide (11).

6. A tool holder for machining inner arc surfaces according to claim 1, characterized in that: The tail of the fixing block (1) is clamped on the tool post of the lathe, and the fixing block (1) is made of metal.

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