Cutter bar for pipe end machining

Abstract

The utility model relates to the technical field of milling cutter bars, and discloses a cutter bar for pipe end machining, which comprises a main shaft top sleeve, and a main shaft brim is fixedly mounted on the lower portion of the outer side wall of the main shaft top sleeve. A plurality of guide assemblies and springs are installed on the lower portion of the brim of the main shaft in a circumferential equidistant array mode, the lower portion of the brim of the main shaft is elastically connected with a hexagonal anti-loosening cap through the guide assemblies and the springs in the vertical direction, and a plurality of main shaft clamping strips are fixedly installed at the bottom of the main shaft top sleeve in a circumferential equidistant array mode. According to the cutter bar used for pipe end machining, the cutter bar can be rapidly clamped by adopting a non-rotating type inserting and matching thread clamping assembly, a plurality of guide assemblies and a hexagonal anti-loosening cap connected with a spring are additionally arranged on the lower portion of the brim of the main shaft, and the hexagonal anti-loosening cap is arranged on the lower portion of the brim of the main shaft. The hexagonal thread sleeve chuck can be prevented from loosening, the installation is very firm, and the anti-loosening effect is good.

Description

Technical Field

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

[0002] A tool holder is a commonly used tool in machining machine parts. Due to the high precision requirements in machining parts, the tool holder must be tightly fixed to the machining machine. However, sometimes it is necessary to use different tool holders on the same machine, and conventional tool holders are relatively cumbersome to disassemble, resulting in low machining efficiency.

[0003] Existing tool holders capable of quick clamping generally use non-rotational plug-in threaded clamping components. However, the outer threaded sleeve of the threaded clamping component is prone to loosening during machining vibrations, resulting in unstable clamping and poor anti-loosening effect. Utility Model Content

[0004] The purpose of this utility model is to provide a tool holder for pipe end machining. The tool holder for pipe end machining disclosed in this utility model adopts a non-rotational plug-in threaded clamping assembly to quickly clamp the tool holder. Several guide components and hexagonal anti-loosening caps connected with springs are added to the lower part of the spindle cap to prevent the hexagonal threaded collet from loosening. After installation, it is very tight and has a good anti-loosening effect, thus solving the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a tool holder for pipe end machining, comprising a spindle top sleeve, a spindle cap fixedly installed on the lower part of the outer side wall of the spindle top sleeve, a plurality of guide components and springs installed in a circumferentially equidistant array on the lower part of the spindle cap, and a hexagonal anti-loosening cap elastically connected in the vertical direction through the guide components and springs, a plurality of spindle clamps fixedly installed in a circumferentially equidistant array at the bottom of the spindle top sleeve, a hexagonal threaded collet threaded to the outer side wall of the plurality of spindle clamps, and an anti-rotation slot formed by the inner side wall of the plurality of spindle clamps, into which a variable diameter tool holder sleeve is inserted, and a tool holder non-rotatingly inserted into the variable diameter tool holder sleeve.

[0006] Preferably, the guide assembly includes a plurality of guide posts arranged in a circumferentially equidistant array at the lower part of the main shaft brim, and a guide block is fixedly installed at the bottom of the guide posts.

[0007] Preferably, the top of the hexagonal anti-loosening cap is equipped with guide sleeves in a circumferentially equidistant array corresponding to the guide block positions, and the guide block is slidably connected to the inner side wall of the guide sleeve.

[0008] Preferably, both the guide assembly and the hexagonal anti-loosening cap are made of cemented carbide.

[0009] Preferably, the anti-rotation slots formed by the inner sidewalls of several spindle clamps and the inner slots of the variable diameter tool holder sleeve are not round holes.

[0010] Preferably, the anti-rotation slot can be adapted to the variable diameter tool holder sleeve, and the slot inside the variable diameter tool holder sleeve can be adapted to the tool bar.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] This utility model discloses a tool holder for pipe end machining that uses a non-rotational plug-in threaded clamping assembly for quick clamping. Several guide components and spring-connected hexagonal anti-loosening caps are added to the lower part of the spindle cap to prevent the hexagonal threaded collet from loosening. Once installed, it is very secure and has a good anti-loosening effect. This solves the problem that existing tool holders that can be quickly clamped generally use a non-rotational plug-in threaded clamping assembly, but the outer thread of the threaded clamping assembly is prone to loosening during machining vibrations, resulting in unstable clamping and poor anti-loosening effect. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 3 This is a cross-sectional structural diagram of the present invention;

[0016] Figure 4 for Figure 3 A schematic diagram of the structure at point A in the middle.

[0017] In the diagram: 1. Spindle top sleeve; 2. Spindle cap; 3. Guide assembly; 301. Guide post; 302. Guide block; 303. Guide sleeve; 4. Spring; 5. Hexagonal anti-loosening cap; 6. Hexagonal threaded collet; 7. Spindle clamp; 8. Variable diameter tool holder sleeve; 9. Tool holder. Detailed Implementation

[0018] 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.

[0019] Please see Figures 1-4The diagram shows a tool holder for pipe end machining, comprising a spindle top sleeve 1. A spindle cap 2 is fixedly installed on the lower part of the outer wall of the spindle top sleeve 1. Several guide components 3 and springs 4 are installed in a circumferentially equidistant array on the lower part of the spindle cap 2, and hexagonal anti-loosening caps 5 are elastically connected in the vertical direction through the guide components 3 and springs 4. Several spindle clamps 7 are fixedly installed in a circumferentially equidistant array at the bottom of the spindle top sleeve 1. Hexagonal threaded collets 6 are threadedly connected to the outer wall of the spindle clamps 7. The inner wall of the spindle clamps 7 forms an anti-loosening mechanism. A variable diameter tool holder sleeve 8 is inserted into a rotating slot and an anti-rotation slot. A tool shank 9 is non-rotatably inserted into the variable diameter tool holder sleeve 8. The tool shank 9 disclosed in this utility model for pipe end machining adopts a non-rotational insertion connection with a threaded clamping assembly to quickly clamp the tool shank 9. The threaded clamping assembly includes a hexagonal threaded collet 6 and several spindle clamping bars 7 that can be threadedly connected to it. Several guide components 3 and hexagonal anti-loosening caps 5 connected to springs 4 are added to the lower part of the spindle cap 2 to prevent the hexagonal threaded collet 6 from loosening. After installation, it is very tight and has a good anti-loosening effect.

[0020] Furthermore, the guide assembly 3 includes several guide posts 301 arranged in a circumferentially equidistant array at the lower part of the spindle cap 2, with guide blocks 302 fixedly installed at the bottom of the guide posts 301; furthermore, guide sleeves 303 are arranged in a circumferentially equidistant array at the top of the hexagonal anti-loosening cap 5 corresponding to the positions of the guide blocks 302, with guide blocks 302 slidably connected to the inner sidewall of the guide sleeves 303, providing excellent guiding effect; furthermore, both the guide assembly 3 and the hexagonal anti-loosening cap 5 are made of hard alloy, ensuring a long service life; furthermore, the anti-rotation slots formed by the integral inner sidewalls of several spindle clamping bars 7 and the inner slot of the variable diameter tool holder sleeve 8 are not round holes, preventing rotation and facilitating machining; furthermore, the anti-rotation slots can be adapted to the variable diameter tool holder sleeve 8, and the inner slot of the variable diameter tool holder sleeve 8 can be adapted to the tool holder 9, facilitating quick and easy insertion.

[0021] In this solution, during use, the tool holder 9 for pipe end machining disclosed in this utility model adopts a non-rotational plug-in threaded clamping assembly to quickly clamp the tool holder 9. The threaded clamping assembly includes a hexagonal threaded collet 6 and several spindle clamping bars 7 that can be threadedly connected to it. Several guide components 3 and hexagonal anti-loosening caps 5 connected to springs 4 are added to the lower part of the spindle cap 2 to prevent the hexagonal threaded collet 6 from loosening. After installation, it is very tight and has a good anti-loosening effect. First, the corresponding variable diameter tool holder sleeve 8 is fitted over the tool holder 9. The tool holder 9 and the variable diameter tool holder sleeve 8 are then inserted as a whole into several spindle clamping bars 7. Within the anti-rotation slot formed by the inner sidewall of the shaft clamping bar 7, the hexagonal anti-loosening cap 5 is pushed upward to prevent it from obstructing the rotation of the hexagonal threaded sleeve chuck 6. At this time, the guide sleeve 303 slides upward along the guide block 302, and the spring 4 is compressed. After the hexagonal threaded sleeve chuck 6 is threadedly installed on the outer casing of several main shaft clamping bars 7 and securely clamped, the hexagonal threaded sleeve chuck 6 is finely adjusted to correspond with the bottom slot of the hexagonal anti-loosening cap 5. The hexagonal anti-loosening cap 5 is then released, and the spring 4 returns to its original position, causing the hexagonal anti-loosening cap 5 to be reset and fitted onto the top of the hexagonal threaded sleeve chuck 6, preventing the hexagonal threaded sleeve chuck 6 from rotating, thus providing a good anti-loosening effect.

[0022] 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.

[0023] 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 bar for pipe end machining comprising a spindle top sleeve (1), characterized in that: The outer side wall of the main shaft top sleeve (1) is fixedly installed with a main shaft hat brim (2), the lower part of the main shaft hat brim (2) is installed with a plurality of guide assemblies (3) and springs (4) in a circumferential equidistant array, and a hexagonal lock nut (5) is elastically connected in the vertical direction through the guide assemblies (3) and the springs (4), the bottom of the main shaft top sleeve (1) is fixedly installed with a plurality of main shaft clamping strips (7) in a circumferential equidistant array, the outer side wall of the main shaft clamping strips (7) is threadedly connected with a hexagonal sleeve chuck (6), the inner side wall of the main shaft clamping strips (7) constitutes an anti-rotation slot, and a variable-diameter tool shank sleeve (8) is inserted into the anti-rotation slot, and a tool rod (9) is non-rotatably inserted into the variable-diameter tool shank sleeve (8).

2. A tool bar for pipe end machining according to claim 1, characterized in that: The guide assembly (3) comprises a plurality of guide columns (301) installed in a circumferential equidistant array at the lower part of the main shaft hat brim (2), and the bottom of the guide column (301) is fixedly installed with a guide block (302).

3. A tool bar for pipe end machining according to claim 2, characterized in that: The top of the hexagonal lock nut (5) is installed with a guide sleeve (303) in a circumferential equidistant array at the position corresponding to the guide block (302), and the inner side wall of the guide sleeve (303) is slidably connected with the guide block (302).

4. The tool bar for pipe end machining of claim 1, wherein: The guide assembly (3) and the hexagonal lock nut (5) are made of hard alloy.

5. The tool bar for pipe end machining of claim 1, wherein: The anti-rotation slot formed by the inner side wall of the main shaft clamping strips (7) and the insertion slot in the variable-diameter tool shank sleeve (8) are both non-circular holes.

6. A tool bar for pipe end machining according to claim 5, characterized in that: The anti-rotation slot can be matched with the variable-diameter tool shank sleeve (8), and the insertion slot in the variable-diameter tool shank sleeve (8) can be matched with the tool rod (9).

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