A new type of tool clamping mechanism for vertical lathe

By using the meshing design of the male and female gear discs, combined with a conical structure, the deformation and stability issues of the BT50 clamping method during heavy cutting and multiple clamping processes are solved, achieving higher centering accuracy and stability, extending the service life of the fixture, and improving machining quality and efficiency.

CN224347367UActive Publication Date: 2026-06-12JIANGSU MEISHEN MEIKE PRECISION MASCH (NANTONG) CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
JIANGSU MEISHEN MEIKE PRECISION MASCH (NANTONG) CO LTD
Filing Date
2025-03-31
Publication Date
2026-06-12

AI Technical Summary

Technical Problem

The traditional BT50 clamping method suffers from problems such as clamping deformation, insufficient stability, wear and fatigue during heavy cutting and multiple clamping processes, which affect machining accuracy and efficiency.

Method used

By employing a male and female gear disc that mesh with toothed blocks and toothed grooves, combined with a conical structure design, stable connection and uniform force distribution are achieved, enhancing centering accuracy and clamping stability, and improving resistance to deformation.

Benefits of technology

It improves the centering accuracy and clamping stability of the cutting tool, reduces machining errors, extends the service life of the fixture, and improves machining accuracy and production efficiency.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a novel tool clamping mechanism for vertical lathe, including tool clamping mechanism main part and the gear disc subassembly on tool clamping mechanism main part, the gear disc subassembly includes male gear disc and female gear disc, male gear disc and female gear disc opposite side are provided with a plurality of toothed blocks and toothed groove respectively, male gear disc and female gear disc realize the assembly of both through the interlocking mode of toothed block and toothed groove, male gear disc and female gear disc center have big round hole for tool clamping mechanism main part to pass through. The tool clamping mechanism of device, adopt the mode of prior art BT50, cooperate gear disc interlock, both retain the centering accuracy of BT50 clamping mode, can improve the stability of tool repeated multiple clamping, can also make up the defect of BT50 heavy cutting deformation.
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Description

Technical Field

[0001] This utility model relates to a novel tool clamping mechanism for vertical lathes, belonging to the technical field of machining equipment. Background Technology

[0002] The BT50 clamping method is widely used in traditional tool clamping mechanisms. Its main advantage lies in providing good centering accuracy and ensuring tool stability during machining. However, the BT50 clamping method also has some drawbacks, especially in heavy cutting and multiple clamping operations. These drawbacks are mainly reflected in the following aspects:

[0003] 1) Heavy cutting deformation: During heavy cutting, uneven force between the tool and the fixture may cause clamping deformation, affecting machining accuracy. Especially under high-load cutting conditions, the clamping method of the BT50 may not be able to effectively resist this deformation, resulting in a slight displacement of the tool position, thus affecting the machining quality.

[0004] 2) Insufficient clamping stability: Although the BT50 can maintain centering accuracy to a certain extent, its clamping force may change during multiple clamping processes as the tool is clamped and unloaded, leading to a decrease in the tool's repeatability. This phenomenon is particularly noticeable during prolonged use or frequent tool changes, affecting production efficiency and machining accuracy.

[0005] 3) Wear and fatigue: During frequent tool changes, the contact surfaces of the fixture may wear, further affecting the distribution and stability of the clamping force. Over long-term use, fatigue of the fixture components may lead to performance degradation, impacting the reliability of the entire clamping system. Utility Model Content

[0006] To address the problems existing in the prior art, this utility model provides a novel tool clamping mechanism for vertical lathes, thereby solving the aforementioned technical problems.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a novel tool clamping mechanism for a vertical lathe, comprising a tool clamping mechanism body and a gear disk assembly located on the tool clamping mechanism body; the gear disk assembly includes a male gear disk and a female gear disk; multiple toothed blocks and toothed grooves are respectively provided on opposite sides of the male and female gear disks; the male and female gear disks are assembled by the meshing of the toothed blocks and toothed grooves; a large circular hole is opened in the center of the male and female gear disks for the tool clamping mechanism body to pass through.

[0008] Furthermore, the male and female gear discs are provided with a plurality of evenly arranged small round holes on their surfaces, which are used for the fasteners to pass through and thus fix the male and female gear discs to the components of the main body of the tool clamping mechanism.

[0009] Furthermore, the toothed block is a cone shape as a whole, and the toothed groove that matches it is a cone groove structure. The above-mentioned cone structure is used to achieve a stable connection.

[0010] The beneficial effects of this utility model are:

[0011] 1. Improved centering accuracy: The meshing mechanism of the gear disc better ensures the centering position of the tool in the clamped state, reducing positional deviations caused by traditional clamping methods. This precise engagement ensures that the tool maintains a consistent position during each clamping, improving machining accuracy;

[0012] 2. Enhanced clamping stability: The gear meshing provides a more uniform and reliable clamping force distribution, enabling the tool to maintain high stability during multiple clamping operations. This stability reduces machining errors caused by improper clamping, making the tool perform more reliably during heavy cutting.

[0013] 3. Improved resistance to deformation: Clamping mechanisms using gear-disc meshing can more effectively resist deformation generated during heavy cutting. Whether in high-load cutting environments or under complex machining conditions, the structural design of the gear disc can distribute forces and reduce local stress concentration, thereby improving tool stability and resistance to deformation.

[0014] 4. Extend service life: By reducing the performance degradation of the fixture caused by wear and fatigue, the design of the gear meshing can extend the service life of the fixture, reduce the frequency of maintenance and replacement, and thus improve overall production efficiency. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the internal structure of the present invention;

[0017] Figure 3 This is a schematic front view of the toothed disc structure of this utility model;

[0018] Figure 4 This utility model Figure 3 A schematic diagram of the AA structure.

[0019] In the figure: 1. Main body of the tool clamping mechanism, 2. Gear plate assembly, 21. Male gear plate, 22. Female gear plate, 3. Tooth block, 4. Tooth groove, 5. Large round hole, 6. Small round hole. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. However, it should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit its scope.

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the invention.

[0022] like Figures 1-4 As shown, a novel tool clamping mechanism for a vertical lathe includes a tool clamping mechanism body 1 and a gear plate assembly 2 located on the tool clamping mechanism body 1. The gear plate assembly 2 includes a male gear plate 21 and a female gear plate 22. Multiple toothed blocks 3 and toothed grooves 4 are respectively provided on opposite sides of the male gear plate 21 and the female gear plate 22. The male gear plate 21 and the female gear plate 22 are assembled by the meshing of the toothed blocks 3 and the toothed grooves 4. A large circular hole 5 is opened in the center of the male gear plate 21 and the female gear plate 22 for the tool clamping mechanism body 1 to pass through.

[0023] In this preferred embodiment, the male gear disk 21 and the female gear disk 22 are provided with a plurality of evenly arranged small round holes 6, which are used for the fasteners to pass through and thus fix the male gear disk 21 and the female gear disk 22 on the components of the main body 1 of the tool clamping mechanism.

[0024] In this preferred embodiment, the toothed block 3 is a cone shape, and the toothed groove 4 that matches it is a cone groove structure. The above-mentioned cone structure is used to achieve a stable connection.

[0025] The tool clamping mechanism of this device adopts the existing BT50 technology and engages with the gear plate. It retains the centering accuracy of the BT50 clamping method, improves the stability of the tool during repeated clamping, and also makes up for the defect of BT50 in heavy cutting deformation.

[0026] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions or improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A novel tool clamping mechanism for a vertical lathe, characterized in that, The device includes a tool clamping mechanism body (1) and a gear plate assembly (2) located on the tool clamping mechanism body (1); the gear plate assembly (2) includes a male gear plate (21) and a female gear plate (22); the male gear plate (21) and the female gear plate (22) are respectively provided with multiple toothed blocks (3) and toothed grooves (4) on opposite sides; the male gear plate (21) and the female gear plate (22) are assembled by meshing the toothed blocks (3) and the toothed grooves (4); the male gear plate (21) and the female gear plate (22) have a large circular hole (5) in the center for the tool clamping mechanism body (1) to pass through.

2. The novel tool clamping mechanism for a vertical lathe according to claim 1, characterized in that, The male gear plate (21) and the female gear plate (22) are provided with a plurality of evenly arranged small round holes (6) on their surfaces, which are used for fasteners to pass through and thus fix the male gear plate (21) and the female gear plate (22) on the components of the main body (1) of the tool clamping mechanism.

3. The novel tool clamping mechanism for a vertical lathe according to claim 1, characterized in that, The toothed block (3) is a cone shape as a whole, and the toothed groove (4) that matches it is a cone groove structure.