A turning tool

Abstract

The utility model relates to lathe chuck technology field, and disclose a kind of turning tool holder, a kind of turning tool holder, including tool holder body, the circumferential outside of tool holder body is evenly provided with several tool rest, tool rest is equipped with turning tool by bolt, synchronous locking device is installed in tool holder body, tool holder body is connected on lathe by synchronous locking device, synchronous locking device includes the multiple locking rods of being carried out thread connection with lathe, the center tooth ring of the synchronous transmission of multiple locking rods, center tooth ring is coaxially arranged with tool holder body, the tooth surface of center tooth ring faces outward, and is engaged with multiple locking rods evenly distributed along the outer periphery of center tooth ring, the utility model directly installs locking rod on tool holder, and realizes synchronous control by center tooth ring, so only need to screw one of locking rod, ensure that the pre-tightening force obtained by all locking rods is uniform, fundamentally solve the problem, such as insufficient rigidity of tool holder connection and precision decline, caused by bolt pre-tightening force uneven.

Description

Technical Field

[0001] This utility model relates to the field of tool holder technology, specifically a turning tool holder. Background Technology

[0002] A lathe is a machine tool that uses a cutting tool to machine rotating workpieces. Lathes are mainly used to machine shafts, discs, sleeves and other workpieces with rotating surfaces. They are the most widely used type of machine tool in machinery manufacturing and repair shops. A turning cutter head is a tool used for turning operations, which mainly consists of a cutter head body and cutting inserts.

[0003] When installing a turning tool head, to ensure connection rigidity and precision and prevent loosening or vibration during machining, the installation procedure requires the use of a torque wrench and the bolts to be tightened to the specified torque in 2-3 steps in a diagonal sequence. This is time-consuming and labor-intensive, and relies on the operator's experience. Each tool needs to be individually set, with tool length and radius compensation determined. The preparation time for the entire tool head is relatively long, and manual operation can easily lead to uneven preload on the bolts, affecting connection precision. Utility Model Content

[0004] The purpose of this invention is to provide a turning tool holder to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a turning tool disc, comprising a tool disc body, wherein a plurality of tool holders are evenly arranged on the outer circumferential side of the tool disc body, and turning tools are mounted on the tool holders by bolts; a synchronous locking device is installed inside the tool disc body; the tool disc body is connected to a lathe via the synchronous locking device; the synchronous locking device includes a plurality of locking rods threadedly connected to the lathe; and a central gear ring that synchronously drives the plurality of locking rods; the central gear ring is coaxially arranged with the tool disc body, and the tooth surface of the central gear ring faces outward and meshes with the plurality of locking rods evenly distributed along the outer circumference of the central gear ring.

[0006] Preferably, the tool holder has through holes that correspond to the number of locking rods and are open vertically. The upper and lower halves of the through holes have a first positioning groove and a second positioning groove extending radially outward, respectively. A movable groove is provided between the first positioning groove and the second positioning groove. The movable groove is coaxially arranged with and connected to the through holes.

[0007] Preferably, the tool holder has an annular toothed groove, a central toothed ring is installed in the toothed groove, and the outer side of the toothed groove is connected to the movable groove.

[0008] Preferably, the upper and lower halves of the locking rod are respectively connected to a first positioning ring and a second positioning ring, a gear is provided between the first positioning ring and the second positioning ring, the gear is coaxially connected to the locking rod, the bottom of the locking rod is provided with a thread, and the top of the locking rod is provided with a screw hole.

[0009] Preferably, the gear is disposed in the movable groove and its side engages with the central gear ring, and the first positioning ring and the second positioning ring are respectively disposed in the first positioning groove and the second positioning groove.

[0010] Preferably, the top of the locking rod is lower than the top of the through hole, and the threaded portion at the bottom of the locking rod extends out of the through hole and is threadedly connected to the lathe.

[0011] Preferably, the screw hole is hexagonal or cross-shaped.

[0012] Preferably, the number of locking rods is four.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] This invention directly mounts the locking rods onto the cutter head and achieves synchronous control through a central toothed ring. Therefore, by simply turning one locking rod, multiple locking rods can be locked synchronously, saving time and effort, improving installation efficiency, and ensuring that all locking rods receive uniform preload. This fundamentally solves the problems of insufficient rigidity and reduced precision of the cutter head connection caused by uneven bolt preload. Attached Figure Description

[0015] Figure 1 A three-dimensional structural schematic diagram of the turning tool head provided by this utility model;

[0016] Figure 2 A vertical cross-sectional view of the turning tool head provided by this utility model;

[0017] Figure 3 A cross-sectional view of the turning tool head provided by this utility model;

[0018] Figure 4 This is a schematic diagram of the synchronous locking device provided by this utility model.

[0019] In the diagram: 1. Cutter head body; 2. Cutter holder; 3. Bolt; 4. Through hole; 5. First positioning groove; 6. Second positioning groove; 7. Movable groove; 8. Gear ring groove; 9. Synchronous locking device; 10. Locking rod; 11. Center gear ring; 12. First positioning ring; 13. Second positioning ring; 14. Gear; 15. Thread; 16. Tightening hole. Detailed Implementation

[0020] 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.

[0021] Please see Figures 1-4 As shown, a turning tool head includes a tool head body 1 mounted on a lathe. A plurality of tool holders 2 are evenly arranged on the outer circumferential side of the tool head body 1. Turning tools are mounted on the tool holders 2 by bolts 3, locking and fixing the turning tools to the tool holders 2. A synchronous locking device 9 is installed inside the tool head body 1 to achieve synchronous locking of multiple locking rods. The tool head body 1 is connected to the lathe via the synchronous locking device 9 to ensure connection rigidity and accuracy. The synchronous locking device 9 includes multiple locking rods threadedly connected to the lathe. 10. A central gear ring 11 that synchronously drives multiple locking rods 10. The central gear ring 11 is coaxially arranged with the cutter head body 1. The tooth surface of the central gear ring 11 faces outward and meshes with multiple locking rods 10 that are evenly distributed along the outer circumference of the central gear ring 11. When the central gear ring 11 rotates, it drives multiple locking rods 10 to rotate. And when one locking rod 10 rotates, it will also drive the other locking rods 10 to rotate through the rotation of the central gear ring 11. Therefore, synchronous locking can be achieved by turning one of the locking rods 10.

[0022] The tool holder 2 has through holes 4 that correspond to the number of locking rods 10 and are open at both ends, so that the locking rods 10 can extend outward and the screwing tool can be inserted. The upper and lower halves of the through hole 4 have a first positioning groove 5 and a second positioning groove 6 extending outward radially, respectively. A movable groove 7 is provided between the first positioning groove 5 and the second positioning groove 6. The movable groove 7 is coaxially arranged and connected with the through hole 4. The tool holder 2 has an annular toothed groove 8. A central toothed ring 11 is installed in the toothed groove 8. The outer side of the toothed groove 8 is connected to the movable groove 7.

[0023] The upper and lower halves of the locking rod 10 are respectively connected to a first positioning ring 12 and a second positioning ring 13, which are used to fix the vertical position of the locking rod 10. A gear 14 is provided between the first positioning ring 12 and the second positioning ring 13. The gear 14 is coaxially connected with the locking rod 10, so that the rotation of the gear 14 can drive the locking rod 10 to rotate synchronously. The bottom of the locking rod 10 is provided with a thread 15, which is screwed into the lathe through the thread when the locking rod 10 rotates. The top of the locking rod 10 is provided with a screw hole 16, which is convenient for operation with a screwing tool.

[0024] The gear 14 is located in the movable groove 7 and meshes with the central gear ring 11 on its side. The first positioning ring 12 and the second positioning ring 13 are respectively located in the first positioning groove 5 and the second positioning groove 6, so that the locking rod 10 is rotatably mounted on the cutter head body 1 and the two are movably connected together.

[0025] The top of the locking rod 10 is lower than the top of the through hole 4, reducing the space occupied, and the threaded part at the bottom of the locking rod 10 extends out of the through hole 4 to be threadedly connected to the lathe.

[0026] The screw hole 16 is hexagonal or cross-shaped, which makes it easy to tighten using a screwing tool.

[0027] There are four locking rods 10, which can more stably lock the tool head body 1 onto the lathe.

[0028] Working principle: Place the cutter head body 1 on the mounting surface of the lathe, align the threaded portion 15 at the bottom of the multiple locking rods 10 with the threaded holes on the lathe, insert a screwdriver into the screwdriver hole 16 of one of the locking rods 10 and screw it in. When the screwdriver 10 rotates, it drives all the gears 14 to rotate synchronously through the central gear ring 11, thereby driving the other locking rods 10 to rotate synchronously, so that the threaded portion 15 at the bottom is screwed into the threaded hole of the lathe until the cutter head body 1 is evenly and reliably tightened and fixed on the lathe.

[0029] 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 a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0030] 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 turning tool disc comprising a tool disc body (1), a plurality of tool holders (2) are uniformly arranged on the circumferential outer side of the tool disc body (1), and a turning tool is installed on the tool holder (2) through a bolt (3), characterized in that, The cutter head body (1) is equipped with a synchronous locking device (9). The cutter head body (1) is connected to the lathe via the synchronous locking device (9). The synchronous locking device (9) includes multiple locking rods (10) that are threadedly connected to the lathe, and a central gear ring (11) that synchronously drives the multiple locking rods (10). The central gear ring (11) is coaxially arranged with the cutter head body (1). The tooth surface of the central gear ring (11) faces outward and meshes with multiple locking rods (10) that are evenly distributed along the outer circumference of the central gear ring (11).

2. A turning tool according to claim 1, characterized in that: The tool holder (2) is provided with through holes (4) that correspond to the number of locking rods (10) and are open from top to bottom. The upper and lower halves of the through hole (4) are respectively provided with a first positioning groove (5) and a second positioning groove (6) extending radially outward. A movable groove (7) is provided between the first positioning groove (5) and the second positioning groove (6). The movable groove (7) is coaxially arranged and connected with the through hole (4).

3. A turning tool holder according to claim 1, characterized in that: The tool holder (2) is provided with an annular toothed groove (8), and a central toothed ring (11) is installed in the toothed groove (8). The outer side of the toothed groove (8) is connected to the movable groove (7).

4. The turning tool according to claim 1, characterized in that: The upper and lower halves of the locking rod (10) are respectively connected to a first positioning ring (12) and a second positioning ring (13). A gear (14) is provided between the first positioning ring (12) and the second positioning ring (13). The gear (14) is coaxially connected to the locking rod (10). The bottom of the locking rod (10) is provided with a thread (15), and the top of the locking rod (10) is provided with a screw hole (16).

5. A turning tool according to claim 4, characterized in that: The gear (14) is located in the movable groove (7) and its side meshes with the central gear ring (11). The first positioning ring (12) and the second positioning ring (13) are respectively located in the first positioning groove (5) and the second positioning groove (6).

6. A turning tool according to claim 4, characterized in that: The top of the locking rod (10) is lower than the top of the through hole (4), and the threaded part at the bottom of the locking rod (10) extends out of the through hole (4) and is threadedly connected to the lathe.

7. A turning tool according to claim 4, characterized in that: The screw hole (16) is hexagonal or cross-shaped.

8. The turning tool insert according to claim 1, characterized in that: The number of locking rods (10) is four.

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