Automatic threading machine for machining silicon carbide screw

Abstract

The automatic threading machine comprises a machine tool body, a chuck of the machine tool body clamps one end of a silicon carbide rod, a tailstock of the machine tool body abuts against the other end of the silicon carbide rod, and a sliding box of the machine tool body is provided with a threading device for the silicon carbide rod. The threading device comprises a shell, a tool adjusting mechanism and tools, the shell is arranged on the sliding box, the silicon carbide rod penetrates through the shell, the tool adjusting mechanism is arranged on the shell and provided with two working ends, the two tools are detachably installed at the two working ends of the tool adjusting mechanism respectively, and tool bits of the tools are tangent to the silicon carbide rod. According to the threading machine, threads on the silicon carbide screw can be machined and formed at a time, efficiency is improved, machining errors caused by one-rod one-cutter adjustment are avoided, and stability and unification of machining quality are guaranteed. In addition, threading of the threading device is carried out in an environment with a relatively closed shell, so that the phenomenon of splashing of materials discharged from the threading device is prevented, people are prevented from being hurt, and dust is reduced.

Description

Technical Field

[0001] This utility model relates to the technical field of silicon carbide screw processing equipment, and in particular to an automatic threading machine for silicon carbide screw processing. Background Technology

[0002] Silicon carbide ceramic bolts are high-performance fasteners widely used in high-temperature, high-pressure, and corrosive environments. The production process for silicon carbide ceramic bolts involves: first, preparing a mold; then, molding the prepared silicon carbide in the mold using dry pressing, isostatic pressing, or slip casting; and finally, sintering the formed silicon carbide bolt blank to achieve ceramicization. After sintering, the ceramic bolt does not have threads. Due to the hard and brittle nature of ceramics, threading is typically achieved using existing processing equipment, such as a machine tool. The ceramic bolt is clamped in a chuck, and then, through rotational motion and a uniformly fed cutting tool, a thread structure is formed on the outer circumference of the ceramic bolt.

[0003] In actual threading processes, due to the brittleness of silicon carbide ceramic bolts, when machining deeper threads, multiple threading operations from shallow to deep are required to prevent chipping of the thread groove. This means that the depth of cut needs to be adjusted multiple times. For most threading needs, adjusting the depth of cut only twice is usually sufficient. Although the machine tool's own apron also has the function of adjusting the tool feed (depth of cut), the cutting tools on the apron work in an exposed environment. Firstly, during threading, the material scrap is severely splattered and generates a lot of dust. Secondly, the second adjustment of the depth of cut requires stopping the machine and restarting the threading process, which is time-consuming and greatly reduces processing efficiency. Utility Model Content

[0004] The purpose of this invention is to provide an automatic threading machine for processing silicon carbide screws, so as to solve the problems of serious material splashing and dust generation when threading silicon carbide ceramic bolts on machine tools, as well as the time-consuming adjustment of the second depth of cut and re-threading, which reduces processing efficiency.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] An automatic threading machine for machining silicon carbide screws includes a machine body, a chuck of the machine body clamping one end of a silicon carbide rod, a tailstock of the machine body abutting the other end of the silicon carbide rod, and a threading device for the silicon carbide rod being provided on the slide box of the machine body; wherein,

[0007] The thread rolling device includes a housing, a tool adjusting mechanism, and a cutting tool. The housing is disposed on the slide box, and the silicon carbide rod passes through the housing. The tool adjusting mechanism is disposed on the housing and has two working ends. The two cutting tools are detachably mounted on the two working ends of the tool adjusting mechanism, and the cutting tips of the cutting tools are tangent to the silicon carbide rod.

[0008] A further technical solution is as follows: the tool adjusting mechanism includes a slider, a double-threaded rod, and ear plates. The two sliders are slidably mounted on the groove of the housing. The ear plates are symmetrically arranged on the housing. The double-threaded rod is rotatably mounted on the two ear plates. The two sliders are respectively threaded onto the two threaded sections of the double-threaded rod. The tool is detachably mounted on the slider.

[0009] A further technical solution is that a lever is slidably mounted on the outer end of the double-threaded rod.

[0010] A further technical solution is that the depth of cut of the tools on the two sliders gradually increases along the thread-cutting direction.

[0011] A further technical solution is that the two threaded segments of the double-threaded rod are arranged with their thread directions facing each other.

[0012] A further technical solution is: the shell is provided with a cavity, and a dust removal pipe is provided on the cavity and communicates with it, and the dust removal pipe is connected to an external negative pressure dust removal device.

[0013] A further technical solution is: baffles are provided on both sides of the housing, and dustproof rings are provided on the baffles.

[0014] A further technical solution is that the dustproof ring is a sponge ring.

[0015] Compared with the prior art, the present invention can achieve at least one of the following beneficial effects:

[0016] This invention proposes an automatic threading machine for processing silicon carbide screws. The threading head of this machine can simultaneously mount two inserts with different depths of cut. Firstly, it allows for the threading of the silicon carbide screw in a single operation, avoiding the reduced processing efficiency caused by downtime for secondary feeds and threading. Secondly, after each insert is installed and fixed, multiple silicon carbide screws can be processed continuously, avoiding processing errors caused by adjusting the insert for each screw and ensuring stable and consistent processing quality. Furthermore, the threading operation is carried out in a relatively enclosed environment, preventing material spillage, avoiding injury, and reducing dust. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of an automatic threading machine for processing silicon carbide screws according to this utility model.

[0018] Figure 2 This utility model Figure 1 A schematic diagram of the structure of the wire feeder.

[0019] Figure 3 This utility model Figure 2A schematic diagram of the middle shell structure.

[0020] Reference numerals in the attached drawings: 1. Machine tool body; 2. Chuck; 3. Silicon carbide rod; 4. Tailstock; 5. Slide box; 6. Thread cutter; 7. Housing; 8. Tool adjusting mechanism; 9. Tool; 10. Slide block; 11. Double threaded rod; 12. Ear plate; 13. Lever; 14. Dust removal pipe; 15. Baffle; 16. Dustproof ring. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can typically be arranged and designed in various different configurations.

[0022] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0023] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other.

[0024] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0025] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are only used for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0026] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Example

[0027] This implementation example Figure 1 and Figure 2 As shown, an automatic threading machine for processing silicon carbide screws includes a machine body 1, a chuck 2 of the machine body 1 clamping one end of a silicon carbide rod 3, a tailstock 4 of the machine body 1 abutting the other end of the silicon carbide rod 3, and a threading device 6 for the silicon carbide rod 3 being provided on the slide box 5 of the machine body 1; wherein,

[0028] The thread cutter 6 includes a housing 7, a tool adjusting mechanism 8, and a tool 9. The housing 7 is mounted on the slide box 5, and the silicon carbide rod 3 passes through the housing 7. The tool adjusting mechanism 8 is mounted on the housing 7 and has two working ends. The two tools 9 are detachably mounted on the two working ends of the tool adjusting mechanism 8, and the cutting head of the tool 9 is tangent to the silicon carbide rod 3.

[0029] The working process of this utility model is as follows: The silicon carbide rod 3 is clamped on the chuck 2 of the machine tool body 1 and secured by the tailstock. During this process, the secured end of the silicon carbide rod 3 is located inside the thread cutter 6 and enters the thread cutting waiting state. The machine tool is started, the chuck 2 rotates with the silicon carbide rod 3, and the slide box 5 moves with the thread cutter 6. The cutting tool 9 inside the thread cutter 6 threads the silicon carbide rod 3 from shallow to deep. The thread cutter 6 of this thread cutting machine can be equipped with two cutting tools with different depths of cut at one time. First, it can process the thread on the silicon carbide screw in one go, avoiding the problem of reduced processing efficiency caused by stopping the machine for secondary cutting and secondary thread cutting. Second, after each cutting tool is installed and fixed, multiple silicon carbide screws can be processed continuously, avoiding the processing error caused by adjusting the cutting tool for each screw, and ensuring stable and uniform processing quality. In addition, the thread cutting of the thread cutter is carried out in a relatively sealed environment of the housing, preventing the phenomenon of material splashing, avoiding injury and reducing dust.

[0030] Preferably, the tool adjusting mechanism 8 includes a slider 10, a double threaded rod 11, and an ear plate 12. The two sliders 10 are slidably mounted on the groove of the housing 7, the ear plates 12 are symmetrically arranged on the housing 7, the double threaded rod 11 is rotatably mounted on the two ear plates 12, and the two sliders 10 are respectively threaded onto the two threaded sections of the double threaded rod 11. The tool 9 is detachably mounted on the slider 10.

[0031] The rotation of the double-threaded rod 11 causes the two sliders 10 to move towards or away from each other on the grooves of the housing 7, thereby adjusting the distance between the two cutting tools 9 to accommodate the pitch of each type of thread. The depth of cut of the cutting tools 9 on the two sliders 10 gradually increases along the threading direction. The thread directions of the two threaded sections of the double-threaded rod 11 are set facing each other.

[0032] Based on the above, the depth of cut of the two cutting tools 9 relative to the silicon carbide rod 3 can be controlled at the initial installation of the cutting tools 9 on the slider 10. Generally speaking, the depth of cut of the cutting tool in front is half the depth of the thread to be cut, and the depth of cut of the cutting tool behind is the depth of the thread to be cut.

[0033] Preferably, a lever 13 is slidably mounted on the outer end of the double-threaded rod 11.

[0034] Lever 13 allows for relatively effortless rotation of the double threaded rod 11. Example

[0035] Based on the above embodiments, this embodiment, for example Figure 3 As shown, the housing 7 is provided with a cavity, and a dust removal pipe 14 is provided on the cavity and communicates with it. The dust removal pipe 14 is connected to an external negative pressure dust removal device.

[0036] The cavity is the threading working chamber, mainly used to contain the uncut material and dust. The dust removal pipe 14 draws away the uncut material and dust under negative pressure to prevent the uncut material from accumulating in the cavity and ensure the smooth operation of the threading work.

[0037] Preferably, baffles 15 are provided on both sides of the housing 7, and dustproof rings 16 are provided on the baffles 15. The dustproof rings 16 are made of sponge.

[0038] The baffle 15 and the dustproof ring 16 achieve a sealing and dustproof effect without hindering the rotation and movement of the silicon carbide rod 3. The sponge ring is relatively soft and will not damage the silicon carbide rod 3 when it acts as a material stopper.

[0039] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An automatic threading machine for machining silicon carbide screws, characterized in that: The machine tool includes a machine body (1), a chuck (2) of which clamps one end of a silicon carbide rod (3), a tailstock (4) of which abuts the other end of the silicon carbide rod (3), and a thread cutter (6) for the silicon carbide rod (3) is provided on the slide box (5) of the machine tool body (1); wherein, The thread cutter (6) includes a housing (7), a tool adjusting mechanism (8), and a tool (9). The housing (7) is mounted on the slide box (5), and the silicon carbide rod (3) passes through the housing (7). The tool adjusting mechanism (8) is mounted on the housing (7) and has two working ends. The two tools (9) are detachably mounted on the two working ends of the tool adjusting mechanism (8), and the cutting head of the tool (9) is tangent to the silicon carbide rod (3).

2. The automatic screwing machine for machining of silicon carbide screws according to claim 1, characterized in that: The tool adjusting mechanism (8) includes a slider (10), a double threaded rod (11), and an ear plate (12). The two sliders (10) are slidably mounted on the groove of the housing (7). The ear plates (12) are symmetrically arranged on the housing (7). The double threaded rod (11) is rotatably mounted on the two ear plates (12). The two sliders (10) are respectively threaded onto the two threaded sections of the double threaded rod (11). The tool (9) is detachably mounted on the slider (10).

3. The automatic screwing machine for SiC screw machining according to claim 2, characterized in that: A lever (13) is slidably mounted on the outer end of the double threaded rod (11).

4. The automatic screwing machine for machining of silicon carbide screws according to claim 2, characterized in that: The depth of cutter (9) on the two sliders (10) gradually increases along the thread-cutting direction.

5. The automatic screwing machine for machining of silicon carbide screws according to claim 2, characterized in that: The two threaded sections of the double-threaded rod (11) are arranged with their thread directions facing each other.

6. The automatic screwing machine for machining of silicon carbide screws according to claim 1, characterized in that: The housing (7) is provided with a cavity, and a dust removal pipe (14) is provided on the cavity and communicates with it. The dust removal pipe (14) is connected to an external negative pressure dust removal device.

7. The automatic screwing machine for machining of silicon carbide screws according to claim 1, characterized in that: The housing (7) is provided with baffles (15) on both sides, and dustproof rings (16) are provided on the baffles (15).

8. The automatic screwing machine for SiC screw machining according to claim 7, characterized in that: The dustproof ring (16) is a sponge ring.

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