Auxiliary grinding device for small-diameter titanium rod after butt welding

Abstract

The utility model discloses an auxiliary grinding device for a small-diameter titanium rod after butt welding, a welding part with a convex structure is formed at the end part of the titanium rod after butt welding, the auxiliary grinding device comprises a grinding wheel, and a positioning mechanism for positioning and placing the titanium rod after butt welding is arranged on one side of the grinding wheel; the bottom of the positioning mechanism is further provided with a driving mechanism for driving the positioning mechanism to move towards the grinding wheel in the radial direction. According to the auxiliary grinding device, the titanium rod is placed through the positioning mechanism, and during follow-up grinding, the unstable influence caused by manually holding the titanium rod can be effectively avoided, so that the grinding depth can be controlled, and the problem of grinding pits is avoided. The titanium rod placed on the positioning mechanism is gradually moved towards the grinding wheel by driving the positioning mechanism, then complete grinding of the welding part is stably achieved, meanwhile, accurate control over the grinding depth is achieved by controlling the driving mechanism, and therefore the problem that pits are formed through grinding is further avoided; and the quality of subsequent titanium rod wiredrawing forming is ensured.

Description

Technical Field

[0001] This application relates to the technical field of post-welding grinding of titanium rods, and particularly to an auxiliary grinding device for post-welding of small-diameter titanium rods. Background Art

[0002] Due to its high strength, corrosion resistance, and biocompatibility compared to other metals, titanium has a wide range of applications in fields such as medicine and chemical industry. Currently, the forming process of titanium wire is to form titanium rods rolled into small diameters into titanium wire products with a diameter of about 1 mm or less than 1 mm through multi-pass wire drawing using a wire drawing die. When performing wire drawing operations, the small-diameter titanium rod is inserted into the wire drawing die, and continuous wire drawing is carried out by traction at one end. Therefore, currently, to facilitate continuous wire drawing, the ends of different coiled titanium rods are usually welded to form a wire drawing titanium rod blank with an increased length, so that continuous and longer wire drawing operations can be achieved during wire drawing.

[0003] Currently, after the butt welding of titanium rods, a welded part with a convex structure will be formed at the end (as shown in the attached drawings of the specification). Figure 2 This welded part needs to be removed. The removal method is to hold it manually, so that the welded part formed at the welding position gradually contacts the rotating grinding wheel. The operator moves the titanium rod axially left and right and rotates the titanium rod circumferentially at the same time, as Figure 4 shown, so as to complete the grinding operation of the welded part, making the end of the welded titanium rod flush with the surface of the titanium rod, facilitating subsequent wire drawing operations, and avoiding jamming of the welded part in the wire drawing die during wire drawing.

[0004] However, due to the unstable influence of manual grinding, after the grinding of the welded part is completed, continuous grinding of the welded end of the titanium rod will occur, resulting in grinding pits formed at the welded end of the titanium rod, Figures 6-7 as shown. Furthermore, during wire drawing operations, the problem of uneven surface of the titanium wire will occur at this pit, and at the same time, due to the decrease in the outer diameter at this position, there will also be a problem of fracture under the action of large traction wire drawing. Summary of the Invention

[0005] Aiming at the above problems, this application aims to provide an auxiliary grinding device for post-welding of small-diameter titanium rods, which can position and place the titanium rod. During subsequent grinding, it can effectively solve the unstable influence caused by manually holding the titanium rod, thereby controlling the grinding depth and avoiding the problem of grinding pits.

[0006] To achieve the above object, the technical solution adopted by the present application is as follows: An auxiliary grinding device for butt-welding of small-diameter titanium rods forms a welded part with a convex structure at the end of the titanium rod after butt-welding. The auxiliary grinding device includes a grinding wheel, and is characterized in that: a positioning mechanism for positioning and placing the butt-welded titanium rod is arranged on one side of the grinding wheel, and a driving mechanism for driving it to displace radially towards the grinding wheel is also arranged at the bottom of the positioning mechanism.

[0007] Preferably, the positioning mechanism includes placing blocks symmetrically arranged on one side of the grinding wheel, and each placing block is provided with a placing groove for embedding and placing the titanium rod.

[0008] Preferably, the driving mechanism is a slide rail arranged at the bottom of each placing block towards the grinding wheel, and limit protrusions in contact with the placing block are arranged at both ends of the slide rail. When the placing block is in contact with the limit protrusion on the side close to the grinding wheel, the peripheral surface of the titanium rod is in contact with the grinding wheel.

[0009] Preferably, rollers in contact with the titanium rod are arranged at intervals in the placing groove.

[0010] The beneficial effect of the present application is that: the auxiliary grinding device places the titanium rod through the positioning mechanism. During subsequent grinding, it can effectively solve the problem of instability caused by manually holding the titanium rod, thereby controlling the grinding depth and avoiding the problem of grinding pits. By driving the positioning mechanism to gradually move the titanium rod placed on the positioning mechanism towards the grinding wheel, the complete grinding of the welded part can be stably achieved. At the same time, by controlling the driving mechanism, the precise control of the grinding depth can be realized, further avoiding the problem of grinding pits and ensuring the quality of subsequent wire drawing forming of the titanium rod. Description of the Drawings

[0011] Figure 1 It is a diagram of the titanium rod to be butt-welded.

[0012] Figure 2 It is a diagram after butt-welding of the titanium rod.

[0013] Figure 3 It is a diagram of manually holding the butt-welded titanium rod and grinding it through the grinding wheel.

[0014] Figure 4 For Figure 3 Top view.

[0015] Figure 5 It is a diagram of the butt-welded titanium rod after grinding.

[0016] Figure 6 It is a diagram of the current over-grinding.

[0017] Figure 7 For Figure 6 It is a diagram of the pit formed after over-grinding.

[0018] Figure 8 This is a schematic diagram of the overall structure of the auxiliary grinding device for this application.

[0019] Figure 9 For this application Figure 8 This is a schematic diagram showing the driving of the titanium rod to achieve step-by-step grinding.

[0020] Figure 10 This is a side view structural diagram of the placement groove for this application. Specific embodiments

[0021] In order to enable ordinary technicians in the art to better understand the technical solution of this application, the technical solution of this application will be further described below in conjunction with the accompanying drawings and embodiments.

[0022] Referring to Figures 1-10 As shown in a small-diameter titanium rod post-welding auxiliary grinding device, a convex welding part 11 is formed at the end of the titanium rod 1 after butt welding. The auxiliary grinding device includes a grinding wheel 2, which is rotatably arranged on a grinding platform, and a driving motor (not shown in the figure) for driving the grinding wheel 2 to rotate is arranged at the bottom. By manually holding it, the welding part 11 formed at the welding place gradually contacts the rotating grinding wheel to complete the grinding operation of the welding part 11.

[0023] In order to solve the problem of grinding pits caused by the instability of current manual grinding, as Figure 8 shown, this application is provided with a positioning mechanism for positioning and placing the butt-welded titanium rod 1 on one side of the grinding wheel 2. By placing the titanium rod through this positioning mechanism, the instability problem existing in manually holding the titanium rod can be effectively solved during subsequent grinding, so that the grinding depth can be controlled and the problem of grinding pits can be avoided.

[0024] Since the welding part 11 is gradually ground by contacting the grinding wheel 2, in order to achieve this grinding method, a driving mechanism for driving it to displace radially towards the grinding wheel 2 is also arranged at the bottom of the positioning mechanism. It can drive the positioning mechanism and the titanium rod placed on the positioning mechanism to gradually move towards the grinding wheel 2, thereby stably achieving the complete grinding of the welding part 11. At the same time, by controlling the driving mechanism, the precise control of the grinding depth can be achieved, thereby further avoiding the problem of grinding pits.

[0025] Specifically, as Figure 8As shown in the figure, the positioning mechanism includes placing blocks 3 symmetrically arranged on one side of the grinding wheel 2. Each placing block 3 is provided with a placing groove 3a for embedding and placing the titanium rod 1. The titanium rod to be ground is placed and supported in the placing grooves 3a of the symmetrically arranged placing blocks 3. The titanium rod is embedded and positioned by being embedded in the placing grooves 3a, and during the grinding process, the titanium rod is manually pressed down to further improve the positioning stability of the titanium rod placement, that is, to solve the instability of the current manual support. Then, under the drive of the drive mechanism, the gradual and stable grinding operation of the welded part 11 can be realized.

[0026] Specifically, as Figures 8-9 shown in the figure, the drive mechanism is a slide rail 4 arranged at the bottom of each placing block 3 in the direction towards the grinding wheel 2. As Figure 9 shown by the arrow direction in the figure, the placing block 3 is driven to slide towards the grinding wheel 2, so that the welded part 11 gradually contacts the grinding wheel 2, and the gradual grinding operation of the welded part is realized.

[0027] To ensure the grinding accuracy of the welded part 11, as Figures 8-9 shown in the figure, limit protrusions 41 in contact with the placing block 3 are arranged at both ends of the slide rail 4. When the placing block 3 contacts the limit protrusion 41 on the side close to the grinding wheel 2, the peripheral surface of the titanium rod 1 is in contact with the grinding wheel 2. That is, during the process of driving the placing block 3 to slide for grinding, when the placing block 3 contacts the limit protrusion 41 on the side close to the grinding wheel 2, the continuous sliding of the placing block 3 is restricted. At this time, the grinding wheel 2 is also in contact with the peripheral surface of the titanium rod, thus avoiding excessive grinding and ensuring the grinding accuracy problem. The limit protrusion 41 on the other side restricts the placing block 3 from slipping off the slide rail 4.

[0028] Since the welded part 11 is located on the entire peripheral surface of the titanium rod, it is necessary to rotate the titanium rod circumferentially for complete grinding. Therefore, to facilitate the circumferential rotation of the titanium rod, as Figure 10 shown in the figure, rollers 5 in contact with the titanium rod 1 are arranged at intervals in the placing groove 3a. Through the rollers 5, the convenient rotation of the titanium rod can be realized, and the rotational friction and wear between the titanium rod and the placing groove 3a are reduced.

[0029] The principle of this application is: when grinding the welded part 11 of the butt-welded titanium rod, the titanium rod is placed in the placing grooves 3a of the symmetrically arranged placing blocks 3 and is in contact with and supported by the rollers 5. Then, the titanium rod is manually pressed down in the placing groove 3a, and the placing block 3 is driven to slide towards the grinding wheel 2, so that the welded part 11 gradually contacts the grinding wheel 2, and the gradual grinding operation of the welded part is realized. While grinding, the titanium rod is rotated circumferentially. When the placing block 3 contacts the limit protrusion 41 on the side close to the grinding wheel 2, the continuous sliding of the placing block 3 is restricted. At this time, the grinding wheel 2 is also in contact with the peripheral surface of the titanium rod, thus avoiding excessive grinding and ensuring the grinding accuracy problem.

[0030] The above has shown and described the basic principles, main features and advantages of the present application. Without departing from the spirit and scope of the present application, the present application will also have various changes and improvements, and all these changes and improvements fall within the scope of the present application claimed.

Claims

1. An auxiliary grinding device for small-diameter titanium rods after butt welding, wherein a welding portion (11) with a convex structure is formed at the end of the titanium rod (1) after butt welding, the auxiliary grinding device comprises a grinding wheel (2), and is characterized in that: A positioning mechanism for positioning the butt-welded titanium rod (1) is provided on one side of the grinding wheel (2), and a driving mechanism for driving the positioning mechanism to move radially toward the grinding wheel (2) is also provided at the bottom of the positioning mechanism.

2. The auxiliary grinding device according to claim 1, characterized in that: The positioning mechanism comprises a placement block (3) symmetrically arranged on one side of the grinding wheel (2), and each of the placement blocks (3) is provided with a placement groove (3a) for embedding and placing the titanium rod (1).

3. The auxiliary grinding device according to claim 2, characterized in that: The driving mechanism is a slide rail (4) arranged at the bottom of each placement block (3) in the direction of the grinding wheel (2), and limiting protrusions (41) in contact with the placement block (3) are arranged at both ends of the slide rail (4), and when the placement block (3) contacts the limiting protrusion (41) on the side close to the grinding wheel (2), the circumferential surface of the titanium rod (1) is in contact with the grinding wheel (2).

4. The auxiliary grinding device according to claim 3, characterized in that: Rollers (5) in contact with the titanium rod (1) are arranged at intervals in the placement groove (3a).

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