Bidirectional unfolding tool bit of combined machine tool

By designing a bidirectional cutting head for the combined machine tool, and adopting a bidirectional asymmetrical helical rack and hard connection structure, the problems of low efficiency and poor precision in unidirectional machining of traditional combined machine tools are solved, enabling efficient and precise machining of complex parts and improving the reliability and lifespan of the equipment.

CN224169255UActive Publication Date: 2026-04-28SHANGHAI SHENGHE PRECISE MASCH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SHANGHAI SHENGHE PRECISE MASCH CO LTD
Filing Date
2025-05-12
Publication Date
2026-04-28

AI Technical Summary

Technical Problem

Traditional combination machine tool cutting heads can only perform unidirectional machining, resulting in low efficiency, poor accuracy and insufficient reliability. In particular, when machining complex structures such as the inner cavity arc of an automobile steering gear, the efficiency is low and the secondary clamping affects the product accuracy.

Method used

A combined machine tool bidirectional tool head was designed, which uses a bidirectional asymmetrical helical rack and moving gear shaft to drive the left and right moving blocks to move independently. Combined with a hard connection structure and oil groove design, it can realize bidirectional synchronous or asynchronous processing, ensure zero transmission backlash and provide continuous lubrication.

Benefits of technology

It enables efficient and precise multi-process machining, improves processing efficiency and product accuracy, extends equipment life, and enhances the overall performance and reliability of the equipment.

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Abstract

The utility model relates to the technical field of combined machine tools, in particular to a two-way expanding tool bit of a combined machine tool. The body flange is a main body structure of the expanding tool bit; the movable gear shaft penetrates through the body flange and is meshed with the left side helical teeth and the right side helical teeth; the left moving block is fixedly connected with the left helical tooth, and the right moving block is fixedly connected with the right helical tooth; the middle pressing plate, the right pressing plate and the left pressing plate press the left moving block and the right moving block on the body flange through bolts; the left side helical teeth and the right side helical teeth are bidirectional asymmetric helical racks, the left moving block and the right moving block are driven to move independently in two directions through axial movement of the moving gear shaft, and multi-procedure machining is completed through one-time feeding. The utility model provides the combined machine tool expanding tool bit which is compact in structure, zero in transmission clearance and capable of supporting two-way synchronous or asynchronous machining, the problems of low efficiency, poor precision, insufficient reliability and the like of traditional equipment are fundamentally solved, and technical guarantee is provided for machining of high-precision complex parts.
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Description

Technical Field

[0001] This utility model relates to the field of combined machine tool technology, and in particular to a bidirectional tool-raising head for combined machine tools. Background Technology

[0002] Modular machine tools, as core equipment in modern machining, are widely used in the processing of complex parts in industries such as automotive, aerospace, and plumbing. In traditional machining processes, especially for machining complex structures such as the inner cavity arc of automotive steering gears, multiple operations are usually completed using a unidirectional cutting head with multiple clamping operations, resulting in low efficiency and affecting product accuracy due to secondary clamping. Utility Model Content

[0003] This invention provides a combined machine tool cutter head with a compact structure, zero backlash in transmission, and support for bidirectional synchronous or asynchronous machining. It fundamentally solves the problems of low efficiency, poor precision, and insufficient reliability of traditional equipment, and provides technical support for the machining of high-precision and complex parts.

[0004] The technical solution adopted in this utility model is as follows: a combined machine tool bidirectional cutting head, comprising: a body flange, a movable gear shaft, a left helical gear, a left moving block, a right helical gear, a right moving block, a middle pressure plate, a right pressure plate, and a left pressure plate.

[0005] The main body flange is the main structure of the blade opening head. The moving gear shaft passes through the main body flange and meshes with the left and right helical teeth. The left moving block is fixedly connected to the left helical tooth, and the right moving block is fixedly connected to the right helical tooth. The middle pressure plate, the right pressure plate, and the left pressure plate press the left and right moving blocks to the main body flange with bolts.

[0006] The left and right helical teeth are bidirectional asymmetrical helical racks. The axial movement of the moving gear shaft drives the left and right moving blocks to move independently in both directions, enabling multiple processing steps to be completed in one feed.

[0007] As a further improvement of this utility model, the meshing surfaces of the left and right helical teeth are designed with helical teeth, the transmission clearance is zero, and they are fixed by the clamping of the middle pressure plate, the right pressure plate and the left pressure plate to ensure that the left and right moving blocks do not move during high-speed operation.

[0008] As a further improvement of this utility model, the inner sides of the left and right moving blocks are provided with oil grooves, which extend along the moving direction to provide continuous lubrication during reciprocating motion.

[0009] As a further improvement of this utility model, the outer surfaces of the left moving block and the right moving block are provided with tool mounting tooth surfaces, which are sawtooth-shaped structures to enhance the stability of tool mounting and the efficiency of cutting force transmission.

[0010] As a further improvement of this utility model, the blade extension head is a rigid connection structure as a whole, and the body flange, moving gear shaft, left moving block and right moving block are made of high rigidity material.

[0011] As a further improvement of this utility model, the body flange is provided with multiple mounting holes.

[0012] The beneficial effects of this utility model are as follows: Compared with traditional equipment, this utility model effectively solves three major problems: First, it solves the problem that traditional tool spreaders can only achieve unidirectional processing; second, by adding an oil groove, it solves the lubrication problem and improves product life; third, by adding a mounting tooth surface for left and right movement, it makes the tool installation more stable and the cutting force stronger. This utility model solves the practical problems of customers and can also realize the transformation and upgrading of the combination machine tool field, thus possessing high socio-economic value. Attached Figure Description

[0013] Figure 1 This is a perspective view of a combined machine tool bidirectional tool-raising head according to the present invention;

[0014] Figure 2 This is a front view of a combined machine tool bidirectional tool-raising head according to this utility model;

[0015] Figure 3 This is a cross-sectional view of a combined machine tool bidirectional tool-raising head according to the present invention;

[0016] Figure 4 This is a schematic diagram of the moving gear shaft structure of a bidirectional tool head for a combined machine tool according to this utility model;

[0017] Figure 5 This is a schematic diagram of the left helical tooth structure of a bidirectional cutting head for a combined machine tool according to this utility model;

[0018] Figure 6 This is a schematic diagram of the left moving block structure of a bidirectional tool head of a combined machine tool according to the present invention.

[0019] As shown in the figure: 1. Body flange; 2. Moving gear shaft; 3. Left helical gear; 4. Left moving block; 5. Right helical gear; 6. Right moving block; 7. Middle pressure plate; 8. Right pressure plate; 9. Left pressure plate. Detailed Implementation

[0020] The directional terms such as up, down, left, right, front, back, front, back, top, and bottom mentioned or possibly mentioned in this specification are defined relative to their structure and are relative concepts. Therefore, they may vary depending on their location and usage; thus, these or other directional terms should not be interpreted as restrictive terms.

[0021] The singular forms “a,” “the,” and “the” used in this specification are intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes one or more of the associated listed items, any or all possible combinations thereof.

[0022] To make the technical problems to be solved, the technical solutions, and the beneficial effects of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0023] This utility model provides the following: Figure 1-6 The combined machine tool bidirectional cutting head shown includes: a body flange 1, a movable gear shaft 2, a left helical gear 3, a left movable block 4, a right helical gear 5, a right movable block 6, a middle pressure plate 7, a right pressure plate 8, and a left pressure plate 9.

[0024] The main body flange 1 is the main structure of the cutter head. The moving gear shaft 2 passes through the main body flange 1 and meshes with the left helical gear 3 and the right helical gear 5. The left moving block 4 is fixedly connected to the left helical gear 3, and the right moving block 6 is fixedly connected to the right helical gear 5. The middle pressure plate 7, the right pressure plate 8, and the left pressure plate 9 press the left moving block 4 and the right moving block 6 against the main body flange 1 with bolts. The left helical gear 3 and the right helical gear 5 are bidirectional asymmetrical helical racks. The axial movement of the moving gear shaft 2 drives the left moving block 4 and the right moving block 6 to move independently in both directions, so as to complete multiple processing steps in one feed.

[0025] In this utility model, the meshing surfaces of the left helical tooth 3 and the right helical tooth 5 are designed with helical teeth, the transmission clearance is zero, and they are fixed by the middle pressure plate 7, the right pressure plate 8 and the left pressure plate 9 to ensure that the left moving block 4 and the right moving block 6 do not move during high-speed operation.

[0026] In this invention, the inner sides of the left moving block 4 and the right moving block 6 are provided with oil grooves, which extend along the moving direction to provide continuous lubrication during reciprocating motion.

[0027] In this invention, the outer surfaces of the left moving block 4 and the right moving block 6 are provided with tool mounting tooth surfaces. The mounting tooth surfaces have a sawtooth structure, which is used to enhance the stability of tool mounting and the efficiency of cutting force transmission.

[0028] The blade head of this utility model has an overall rigid connection structure. The body flange 1, the moving gear shaft 2, the left moving block 4 and the right moving block 6 are made of high rigidity materials.

[0029] In this utility model, the body flange 1 is provided with multiple mounting holes.

[0030] Working principle: The movable gear shaft 2 moves back and forth through the holes in the body flange 1, and the helical teeth on the movable gear shaft 2 move up and down, driving the left helical teeth 3 and the right helical teeth 5 to move laterally, thereby driving the left movable block 4 and the right movable block 6 to move back and forth, realizing the double-expansion function.

[0031] In summary, this utility model fundamentally solves the problem of machining internal arcs in automotive steering gears and other parts using combination machine tools, essentially resolving existing industry issues. Furthermore, besides its application in automotive parts processing, this utility model can also be used in plumbing, sanitary ware, medical, and aerospace fields, solving numerous difficult machining problems in the field of mechanical processing. Moreover, the rigid connection and hard contact structure of this utility model ensures its extremely high rigidity and shock resistance, adapting to the needs of various applications. Through the application of this utility model, not only can the overall performance of equipment be improved, malfunctions reduced, and accident rates lowered, but its application also provides valuable reference for the industry, enabling overall technological advancement within the sector.

[0032] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A bidirectional tool-unfolding head for a combined machine tool, characterized in that, include: Body flange (1), moving gear shaft (2), left helical gear (3), left moving block (4), right helical gear (5), right moving block (6), middle pressure plate (7), right pressure plate (8) and left pressure plate (9), The main body flange (1) is the main structure of the blade opening head. The moving gear shaft (2) passes through the main body flange (1) and meshes with the left helical gear (3) and the right helical gear (5). The left moving block (4) is fixedly connected to the left helical gear (3), and the right moving block (6) is fixedly connected to the right helical gear (5). The middle pressure plate (7), the right pressure plate (8) and the left pressure plate (9) press the left moving block (4) and the right moving block (6) against the main body flange (1) by bolts. The left helical tooth (3) and the right helical tooth (5) are bidirectional asymmetrical helical racks. The left moving block (4) and the right moving block (6) are driven to move independently in both directions by the axial movement of the moving gear shaft (2), so that multiple processes can be completed in one feed.

2. The bidirectional tool-raising head for a combined machine tool according to claim 1, characterized in that, The meshing surfaces of the left helical teeth (3) and the right helical teeth (5) are designed with helical teeth, and the transmission clearance is zero. They are also fixed by the middle pressure plate (7), the right pressure plate (8) and the left pressure plate (9) to ensure that the left moving block (4) and the right moving block (6) do not move when running at high speed.

3. The bidirectional tool-raising head for a combined machine tool according to claim 1, characterized in that, The inner sides of the left moving block (4) and the right moving block (6) are provided with oil grooves, which extend along the moving direction and are used to provide continuous lubrication during reciprocating motion.

4. The bidirectional tool-unfolding head for a combined machine tool according to claim 1, characterized in that, The outer surfaces of the left moving block (4) and the right moving block (6) are provided with tool mounting tooth surfaces, which are sawtooth-shaped structures to enhance the stability of tool mounting and the efficiency of cutting force transmission.

5. The bidirectional tool-opening head for a combined machine tool according to claim 1, characterized in that, The blade head is a rigid connection structure, and the body flange (1), moving gear shaft (2), left moving block (4) and right moving block (6) are made of high rigidity material.

6. The bidirectional tool-raising head for a combined machine tool according to claim 1, characterized in that, The body flange (1) is provided with multiple mounting holes.