Special indexing device for machining titanium alloy workpiece

Abstract

The utility model discloses a special indexing device for processing a titanium alloy workpiece, which belongs to the technical field of titanium alloy workpiece processing and comprises a base and a plate body positioned on the base, the plate body is integrally welded on the base, an indexing plate designed in a C shape is mounted on the inner side of the plate body, and the indexing plate is positioned on the base. A ratchet wheel and a pawl installed above the ratchet wheel are further arranged in the disc body, a handle is further installed in the disc body, the handle is of a cylindrical design, and one side of the handle penetrates through the side portion of the disc body and horizontally extends to the outside, so that people can operate the handle on the outer side of the disc body, and the handle is connected with the ratchet wheel in a matched mode. The ratchet wheel can be driven when the handle rotates, and a plurality of semi-annular cams are installed on the inner wall of the disc body. According to the indexing device special for machining the titanium alloy workpiece, the machining efficiency of titanium parts is improved, the workpiece deformation problem caused by strict control over the clamping force is solved, the rejection rate of products is greatly reduced, and the strict size precision is controlled.

Description

Technical Field

[0001] The utility model belongs to the technical field of titanium alloy workpiece processing, and particularly relates to a special device for indexing the processing of titanium alloy workpieces. Background Art

[0002] Titanium alloy refers to a variety of alloy metals made of titanium and other metals. Titanium is an important structural metal developed in the 1950s. Titanium alloys have high strength, good corrosion resistance and high heat resistance. Titanium alloy is an alloy composed of titanium as the base and other elements added. Titanium has two allotropes: α-titanium with a close-packed hexagonal structure below 882 °C and β-titanium with a body-centered cubic structure above 882 °C.

[0003] Alloying elements can be divided into three categories according to their influence on the phase transformation temperature: ① Elements that stabilize the α phase and increase the phase transformation temperature are α-stable elements, such as aluminum, carbon, oxygen and nitrogen. Among them, aluminum is the main alloying element of titanium alloy, and it has obvious effects on improving the room temperature and high temperature strength of the alloy, reducing the specific gravity and increasing the elastic modulus. ② Elements that stabilize the β phase and reduce the phase transformation temperature are β-stable elements, which can be further divided into two types: isomorphous and eutectoid. The former includes molybdenum, niobium, vanadium, etc.; the latter includes chromium, manganese, copper, iron and silicon, etc. ③ Elements that have little influence on the phase transformation temperature are neutral elements, such as zirconium and tin.

[0004] In the process of realizing the present utility model, the inventor found that there are at least the following problems in this technology: in the existing processing of titanium alloy workpieces, the dimensional tolerance of titanium alloy workpieces cannot fully meet the requirements of the drawings, the manual processing efficiency is low, the precision is difficult to control, it is easy to produce defective products, and it is difficult to ensure the precision in medium and small batch production.

[0005] Therefore, we propose a special device for indexing the processing of titanium alloy workpieces to solve the above problems. Content of the Utility Model

[0006] The main purpose of the present utility model is to provide a special device for indexing the processing of titanium alloy workpieces, which solves the processing efficiency of titanium parts, strictly controls the workpiece deformation caused by the size of the clamping force, greatly reduces the defective rate of products, and controls strict dimensional accuracy, and can effectively solve the problems in the background art.

[0007] In order to achieve the above purpose, the present utility model adopts the following technical solutions:

[0008] A special device for indexing the processing of titanium alloy workpieces includes a base and a disk body located on the base, wherein the disk body is integrally welded to the base, a indexing disk designed in a C shape is installed inside the disk body, a ratchet wheel is also provided inside the disk body, and a pawl is installed above the ratchet wheel;

[0009] A handle is also installed inside the disk body. The handle is designed in a cylindrical shape. One side of the handle passes through the side of the disk body and extends horizontally to the outside, so that the edge personnel can operate the handle on the outside of the disk body. The handle is adaptively connected to the ratchet, so that the ratchet can be driven when the handle rotates;

[0010] A plurality of semi-circular cams are installed on the inner wall of the disk body. A pin is connected below the disk body. A shaft is fixedly installed on one side of the ratchet. The shaft is rotatably connected to the indexing plate;

[0011] Single-slope indexing grooves are formed on the circumferential surface of the indexing plate. The indexing plate and the ratchet are connected to the right end of the shaft by keys. The ratchet pawls and the semi-circular cams are installed on the disk body. The disk body is sleeved on the fixed sleeve loosely.

[0012] As a preferred embodiment, the outer wall of the disk body is designed in an arc shape. An inner wall that matches the arc-shaped outer wall of the disk body is provided on the base below the disk body. The disk body is fitted into the arc-shaped inner wall on the base and welded to the disk body; Since the contact and welding area between the disk body and the base is large, the connection between the base and the disk body is more compact. In this way, in the actual application process, the structure of the disk body is more stable. At the same time, a protruding foot is provided on both sides of the bottom wall of the base to keep both sides of the base relatively balanced.

[0013] As a preferred embodiment, the horizontal central axes of the ratchet, the disk body, and the indexing plate are all designed to coincide; One side wall of the indexing plate touches the side of the ratchet, so that the ratchet can be installed on the indexing plate and rotate along the indexing plate. The damping of the rotation of the ratchet and the indexing plate should not be too tight or too loose.

[0014] As a preferred embodiment, a positioning pin is installed obliquely on one side of the base below the disk body. The positioning pin is located directly below the handle. A spring is connected to the side of the positioning pin facing away from the ratchet; The spring can make the positioning pin fit with the disk body under the action of elastic force; Thus, the positioning pin fixes the disk body. However, it should be noted that the spring only plays a role in facilitating installation. By placing the positioning pin in the specified position and extending one side of the positioning pin into the disk body through the spring, the corresponding function is achieved. The spring does not play any role in buffering or shock absorption.

[0015] As a preferred embodiment, the number of semi-circular cams is at least eight, and a plurality of semi-circular cams are distributed in a circumferential array along the central axis of the disk body. A plurality of semi-circular cams are all used in cooperation with the ratchet; So that a plurality of semi-circular cams can act together and cooperate with the ratchet.

[0016] As a preferred embodiment, a fixed sleeve is installed outside the shaft; The fixed sleeve plays a role in strengthening the structure of the shaft, avoiding loosening due to vibrations and other situations during long-term use.

[0017] In summary, the technical effects and advantages of the present utility model:

[0018] The special indexing device for processing titanium alloy workpieces, through this technical solution, during operation, when the handle mounted on the disc body is rotated clockwise, the pawl slips on the ratchet wheel, the shaft does not rotate, the cam withdraws the alignment pin through the pin, and when the handle is rotated in reverse, the pawl drives the ratchet wheel, and the shaft and the indexing disc rotate together. When the alignment pin aligns with the second grid, the alignment pin is automatically pushed in under the action of the spring to complete indexing, solving the problem of the processing efficiency of titanium parts, strictly controlling the workpiece deformation caused by the size of the clamping force, greatly reducing the scrap rate of products, and controlling strict dimensional accuracy. Brief Description of the Drawings

[0019] Figure 1 It is a vertical sectional view on one side of the present utility model;

[0020] Figure 2 It is a vertical sectional view on the other side of the present utility model.

[0021] In the figure: 1, fixed sleeve; 2, pawl; 3, ratchet wheel; 4, shaft; 5, disc body; 6, indexing disc; 7, pin; 8, semi-circular cam; 9, alignment pin; 10, handle. Detailed Embodiment

[0022] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments.

[0023] Refer to Figure 1 - Figure 2 , a special indexing device for processing titanium alloy workpieces, including a base and a disc body 5 located on the base, wherein the disc body 5 is integrally welded to the base, the outer wall of the disc body 5 is designed in an arc shape, and an inner wall that coincides with the arc-shaped outer wall of the disc body 5 is provided on the base below the disc body 5. The disc body 5 is fitted into the arc-shaped inner wall on the base and welded to the disc body 5. Since the contact and welding area between the disc body 5 and the base is large, the connection between the base and the disc body 5 is more compact. In this way, during actual application, the structure of the disc body 5 is more stable. At the same time, a protruding foot is provided on both sides of the bottom wall of the base to keep the two sides of the base relatively balanced;

[0024] An indexing disc 6 designed in a C shape is installed inside the disc body 5. A ratchet wheel 3 and a pawl 2 installed above the ratchet wheel 3 are also provided inside the disc body 5. A handle 10 is also installed inside the disc body 5. The handle 10 is designed in a cylindrical shape, and one side of the handle 10 passes through the side of the disc body 5 and extends horizontally to the outside, so that the edge personnel can operate the handle 10 outside the disc body 5. The handle 10 is adaptively connected to the ratchet wheel 3, so that the ratchet wheel 3 can be driven when the handle 10 rotates;

[0025] A plurality of semi-circular cams 8 are installed on the inner wall of the disk body 5. The number of the semi-circular cams 8 is at least eight, and the plurality of semi-circular cams 8 are circumferentially arrayed along the central axis of the disk body 5. The plurality of semi-circular cams 8 are all used in cooperation with the ratchet wheel 3; so that the plurality of semi-circular cams 8 can act together and cooperate with the ratchet wheel 3. A pin 7 is connected below the disk body 5. A shaft 4 is fixedly installed on one side of the ratchet wheel 3. The shaft 4 is rotationally connected with the indexing plate 6. The horizontal central axes of the ratchet wheel 3, the disk body 5 and the indexing plate 6 are designed to coincide. One side wall of the indexing plate 6 touches the side part of the ratchet wheel 3, so that the ratchet wheel 3 can be installed on the indexing plate 6 and rotate along the indexing plate 6. The damping of the rotation of the ratchet wheel 3 and the indexing plate 6 should not be too tight or too loose;

[0026] A locating pin 9 is inclined and installed on one side of the base below the disk body 5. The locating pin 9 is located directly below the handle 10. A spring is connected to the side of the locating pin 9 facing away from the ratchet wheel 3; the spring can make the locating pin 9 fit with the disk body 5 under the action of elastic force, so as to fix the disk body 5 by the locating pin 9. However, it should be noted that the spring only plays a role in facilitating installation. By placing the locating pin 9 at a specified position and extending one side of the locating pin 9 into the disk body 5 through the spring, the corresponding function is achieved. The spring does not play any role in buffering or shock absorption.

[0027] The special device for indexing the titanium alloy workpiece: a single-slope indexing groove is formed on the circumferential surface of the indexing plate 6. The indexing plate 6 and the ratchet wheel 3 are connected to the right end of the shaft by keys. The pawl 2 and the semi-circular cam 8 are installed on the disk body 5. A fixing sleeve 1 is installed outside the shaft 4. The fixing sleeve 1 plays a role in strengthening the structure of the shaft 4 to prevent it from becoming loose due to vibrations and other situations during long-term use. The disk body 5 is sleeved on the fixing sleeve 1. When the handle 10 installed on the disk body 5 is rotated clockwise, the pawl 2 slips on the ratchet wheel 3 and the shaft 4 does not rotate. The cam 8 withdraws the locating pin 9 through the pin 7. When the handle 10 is rotated reversely, the pawl 2 drives the ratchet wheel 3, and the shaft 4 and the indexing plate 6 rotate together. When the locating pin 9 is aligned with the second grid, the locating pin 9 is automatically pushed in under the action of the spring to complete indexing.

[0028] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and the inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A special indexing device for machining titanium alloy workpieces, comprising a base and a disc (5) located on the base, wherein the disc (5) is integrally welded to the base, characterized in that: A C-shaped indexing disc (6) is installed inside the disc body (5), and a ratchet wheel (3) and a ratchet pawl (2) installed above the ratchet wheel (3) are also provided inside the disc body (5); A handle (10) is also installed in the disc body (5), wherein the handle (10) is designed to be cylindrical, one side of the handle (10) passes through the side of the disc body (5) and extends horizontally to the outside, and the handle (10) is adaptively connected to the ratchet (3); The inner wall of the disk body (5) is provided with a plurality of semi-circular cams (8), a pin (7) is connected to the bottom of the disk body (5), a shaft (4) is fixedly installed on one side of the ratchet wheel (3), and the shaft (4) is rotatably connected to the indexing disk (6); The dividing plate (6) has a single inclined dividing groove on its circumferential surface. The dividing plate (6) and the ratchet wheel (3) are connected to the right end of the shaft by a key. The ratchet pawl (2) and the semi-annular cam (8) are mounted on the plate body (5). The plate body (5) is hollowly sleeved on the fixed sleeve (1).

2. A special device for indexing titanium alloy workpieces according to claim 1, characterized in that: The outer wall of the disk body (5) is designed to be arc-shaped, and the base below the disk body (5) is provided with an inner wall that matches the arc-shaped outer wall of the disk body (5), wherein the disk body (5) is matched with the arc-shaped inner wall on the base and is welded to the disk body (5).

3. The special indexing device for machining titanium alloy workpieces according to claim 1, characterized in that: The horizontal central axes of the ratchet wheel (3), the disc body (5) and the dividing disc (6) are all designed to coincide with each other.

4. The special indexing device for machining titanium alloy workpieces according to claim 1, characterized in that: A fixing pin (9) is obliquely mounted on one side of the base below the disc body (5), wherein the fixing pin (9) is located directly below the handle (10), and a spring is connected to the side of the fixing pin (9) facing away from the ratchet wheel (3); the fixing pin (9) can be adapted to the disc body (5) under the action of elastic force through the spring.

5. The special indexing device for machining titanium alloy workpieces according to claim 1, characterized in that: The plurality of semi-annular cams (8) are distributed in a circular array along the central axis of the disc body (5), and the plurality of semi-annular cams (8) are used in conjunction with the ratchet wheel (3).

6. The special indexing device for machining titanium alloy workpieces according to claim 1, characterized in that: A fixing sleeve (1) is installed on the outer side of the shaft (4).

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