Surface polishing auxiliary device for forged titanium thin-walled tube

Abstract

The utility model discloses a surface polishing auxiliary device for a forged titanium thin-walled pipe, which comprises polishing wheels which are symmetrically and rotatably arranged, pipe body conveying frames are arranged on the two sides of the polishing wheels, and a supporting component which extends into a pipe body and is in symmetrical contact with the inner and outer walls of the pipe body together with the polishing wheels is arranged between the symmetrical polishing wheels; and the supporting component is in axial moving contact relative to the pipe body. The supporting component extending into the pipe body is arranged between the symmetrical polishing wheels, the supporting component extends into the thin-wall pipe body, corresponds to the contact position of the pipe body and the polishing wheels and makes contact with the inner wall face of the thin-wall pipe body, and the effect that equal external force is exerted on the inner side and the outer side at the same contact point of the thin-wall pipe body is achieved; and the outer surface of the thin-walled pipe body is easy to sink due to the polishing acting force on the single side of the polishing wheel, so that the smoothness of the polished surface of the thin-walled pipe body can be effectively ensured.

Description

Technical Field

[0001] The present application relates to the technical field of surface polishing of thin-walled titanium tubes, and in particular to a surface polishing auxiliary device for forged titanium thin-walled tubes. Background Art

[0002] Titanium tubes are tubular products made of titanium and titanium alloys. Due to their excellent performance characteristics, they are widely used in various fields, such as shell-and-tube heat exchangers, coil-and-tube heat exchangers, serpentine heat exchangers, condensers, and evaporators. These devices are widely used in the chemical, petroleum, and pharmaceutical industries. Titanium tubes also offer advantages such as light weight, excellent mechanical properties, and strong corrosion resistance. Currently, a wide variety of specifications are available, such as tubes with different outer diameters and wall thicknesses. To improve the surface quality, titanium tube manufacturing currently requires post-forming polishing.

[0003] At present, the surface polishing of titanium tubes can be done manually by using a handheld polishing machine, which is suitable for polishing curved pipes or pipes with different shapes. However, for batches of straight pipes, manual polishing is inefficient, the polishing depth is inconsistent, and there are areas where surface polishing is omitted. Therefore, for straight pipes, the following methods are currently used: Figure 1-2 The polishing equipment shown in the figure performs batch polishing operations, which includes symmetrically rotating polishing wheels. Tube conveying racks are provided on both sides of the polishing wheels, wherein rollers are provided on the tube conveying racks at intervals. The tube to be polished is placed on one side of the tube conveying rack and is driven to move on the rollers toward the polishing wheels. When the tube contacts the polishing wheels on both sides, the rotation of the polishing wheels drives the tube to rotate, as shown in FIG. Figure 3 As shown, the entire circumference of the tube is polished while the tube is driven axially. Once the tube is fully polished, it is placed on the rollers of the tube conveyor on the other side. Compared to manual handheld polishing machines, this polishing method offers the advantages of high efficiency, good polishing consistency, and the ability to fully polish the entire circumference of the tube.

[0004] When using a symmetrical polishing wheel to polish a thin-walled tube, the tube body will experience rotational vibrations due to the rotating contact of the polishing wheel. Therefore, operators usually press down the tube body to contact the polishing wheel, such as Figure 4 As shown by the vertical arrow in the middle, under this downward pressure, due to the low strength of the thin-walled tube, the force exerted by the polishing wheels on the tube ( Figure 4 As shown by the oblique arrow in the figure, the surface of the thin-walled tube will be squeezed to form pit defects, such as Figure 5 As shown, this affects the smoothness of the polished surface of the thin-walled tube, resulting in a certain scrap rate. Summary of the Invention

[0005] In response to the above-mentioned problems, the present application aims to provide a surface polishing auxiliary device for forged titanium thin-walled tubes, which extends into the thin-walled tube body through a supporting member to achieve equal external force on the inside and outside of the thin-walled tube body at the same contact point, thereby resisting the problem of depression of the outer surface of the thin-walled tube body caused by the unilateral polishing force of the polishing wheel, thereby effectively ensuring the flatness of the surface of the thin-walled tube body after polishing.

[0006] In order to achieve the above-mentioned purpose, the technical solution adopted in this application is as follows: a surface polishing auxiliary device for forged titanium thin-walled tubes, comprising symmetrically rotating polishing wheels, and tube conveying racks are provided on both sides of the polishing wheels, characterized in that: a support member is provided between the symmetrical polishing wheels, which extends into the tube body and symmetrically contacts the inner and outer walls of the tube body with the polishing wheels, and the support member moves in contact axially compared to the tube body.

[0007] Preferably, the support member includes a support rod axially extending into the tube body, and rolling balls are symmetrically arranged on both sides of the support rod, contacting the inner wall of the tube body and corresponding to the contact position of the polishing wheel with the outer wall of the tube body.

[0008] Preferably, a lockable hinge rod is symmetrically provided on one side of the support rod, and the rolling ball is provided on each hinge rod.

[0009] Preferably, a horizontally slidable unloading slide rail is also provided at the bottom of the support rod.

[0010] The beneficial effect of the present application is that a support member extending into the tube body is provided between the symmetrical polishing wheels, and the support member extends into the thin-walled tube body and corresponds to the contact position between the tube body and the polishing wheel, and contacts the inner wall surface of the thin-walled tube body, thereby achieving equal external forces on the inside and outside of the same contact point of the thin-walled tube body, resisting the problem of depression of the outer surface of the thin-walled tube body caused by the unilateral polishing force of the polishing wheel, thereby effectively ensuring the flatness of the surface of the thin-walled tube body after polishing. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a diagram of the polishing equipment structure.

[0012] Figure 2 for Figure 1 Enlarged diagram of the structure at point A in the middle.

[0013] Figure 3 A side view of the polishing wheel.

[0014] Figure 4 for Figure 3 Enlarged view of the structure at point B in the middle.

[0015] Figure 5 Illustration of the concave outer surface of the tube after extrusion.

[0016] Figure 6 A structural diagram is provided for the supporting structure of this application.

[0017] Figure 7 For this application Figure 6 Enlarged view of the structure at point C in the middle.

[0018] Figure 8 This is a diagram of the overall structure of the supporting components of this application.

[0019] Figure 9 This is a diagram of the unloading slide structure for this application.

[0020] Figure 10 This is a physical illustration of a symmetrically set polishing wheel.

[0021] In the figure: 6- hinged screw; 7- vertical support rod; 8- positioning bolt; 9- thin-walled tube. DETAILED DESCRIPTION

[0022] In order to enable ordinary technicians in this field to better understand the technical solution of the present application, the technical solution of the present application is further described below in conjunction with the accompanying drawings and embodiments.

[0023] Refer to the attached Figures 1 to 9 The surface polishing auxiliary device for forged titanium thin-walled tubes shown in the figure includes a symmetrically rotating polishing wheel 1, a tube conveying rack 2 is provided on both sides of the polishing wheel 1, wherein rollers are provided on the tube conveying rack 2 at intervals. The tube to be polished is placed on one side of the tube conveying rack 2 and is driven to move on the roller toward the polishing wheel 1. When the tube contacts the polishing wheels 1 on both sides, the rotation of the polishing wheels 1 drives the tube to rotate, as shown in FIG. Figure 3 As shown, while driving the tube body to move axially, the polishing operation on the complete circumference of the tube body is achieved.

[0024] In order to solve the problem that the thin-walled tube body is easily polished to cause surface pit defects, such as Figure 6 As shown, a support member is provided between the symmetrical polishing wheels 1, extending into the tube body and symmetrically contacting the inner and outer walls of the tube body. The support member is axially movable relative to the tube body. The support member extends into the thin-walled tube body and contacts the inner wall of the thin-walled tube body, corresponding to the contact position between the tube body and the polishing wheel 1. This ensures that equal external forces act on the inner and outer sides of the thin-walled tube body at the same contact point. This resists the problem of dents on the outer surface of the thin-walled tube body caused by the unilateral polishing force of the polishing wheel 1, thereby effectively ensuring the smoothness of the polished surface of the thin-walled tube body. At the same time, the support member can move axially relative to the tube body. That is, the support member and the polishing wheel 1 are relatively stationary, while driving the axial movement of the tube body, thus achieving normal axial polishing operation of the tube body under the action of internal and external support.

[0025] Specifically, such as Figure 7 As shown, the support member includes a support rod 3 extending axially into the tube body, and rolling balls 4 are symmetrically arranged on both sides of the support rod 3, which are in contact with the inner wall of the tube body and correspond to the contact points between the polishing wheel 1 and the outer wall of the tube body. The overall length of the support rod 3 is greater than the length of the tube body, so that during the normal axial polishing process of the tube body, the rolling balls 4 on one end of the support rod 3 can always be supported on the inner wall of the tube body. Figure 7 As shown, the rolling balls 4 on both sides contact the inner and outer walls of the tube body at the same position with the polishing wheel 1, achieving a balanced resistance to the force of the polishing wheel 1 and solving the problem of depression on the outer surface of the tube body due to unidirectional force.

[0026] The contact points between the tubes with different outer diameters and the polishing wheel surface are different, so in order to facilitate the targeted adjustment of the rolling ball 4, such as Figure 8 As shown, the support rod 3 is symmetrically provided with a lockable hinge rod 31 on one side, and the rolling ball 4 is provided on each hinge rod 31. The lockable structure is as shown in FIG. Figure 8 As shown, a lockable hinge screw 6 is provided at the hinge. After the end of the tube is placed on the hinge rod 31, the hinge rods 31 on both sides are driven to open, and the rolling ball 4 contacts the inner wall of the tube and corresponds to the contact point between the tube and the polishing wheel 1. Then, the hinge screw is tightened to lock the hinge rods 31 on both sides. Figure 9 As shown, the other end of the support rod 3 is preferably provided with a vertical support rod 7, which is preferably a telescopic mechanism that can adjust the vertical height of the rolling ball 4, that is, combined with the horizontal hinge structure, to achieve adaptive adjustment of the contact position between the rolling ball 4 and the inner wall of the tube body.

[0027] After the polishing of the tube body from one side to the other side is completed, the tube body will be completely sleeved on the support rod 3, and then in order to facilitate the disassembly of the tube body and the support rod 3 after the polishing is completed, as shown in FIG. Figure 9 As shown, a horizontally slidable unloading slide rail 5 is also provided at the bottom of the support rod 3. The support rod 3 is slidably connected to the unloading slide rail 5 through a vertical support rod. Figure 9 As shown, after the polishing of the tube body is completed, the support rod is driven to slide on the unloading slide rail 5 until the support rod 3 is completely disengaged from the tube body, and the tube body can be unloaded. The unloading slide rail 5 is provided with a strip hole (not shown in the figure), and a positioning bolt 8 is passed through the bottom end of the vertical support rod and passes through the strip hole. When the tube body is polished, the vertical support rod is locked to the unloading slide rail 5 by the positioning bolt, avoiding the problem of displacement of the support rod 3 caused by the axial movement of the tube body and ensuring the stability of the rolling ball 4 supported inside the tube body.

[0028] The principle of the present application is as follows: when polishing a thin-walled tube, first, the outer wall of one end of the tube is brought into contact with the polishing wheel, then the support rod 3 is slid on the unloading slide 5, so that the hinge rod 31 and the rolling ball 4 are inserted into the tube, then the rolling ball 4 is adjusted horizontally and up and down to correspond to the polishing wheel on the inner wall of the tube and to contact the inner wall of the tube, and then locked by the hinge screw and positioned by the positioning bolt, and then the polishing wheel is started to rotate, while driving the tube body to move axially, thus achieving the polishing operation of the entire circumference of the tube body. After the polishing is completed, the support rod 3 is driven to slide on the unloading slide 5 until the support rod 3 is completely disengaged from the tube body, and the tube body can be unloaded.

[0029] The above shows and describes the basic principles, main features and advantages of this application. Without departing from the spirit and scope of this application, this application will also have various changes and improvements, which fall within the scope of this application.

Claims

1. A surface polishing auxiliary device for forging titanium thin-walled tubes, comprising a symmetrically rotatably arranged polishing wheel (1), with tube conveying racks (2) provided on both sides of the polishing wheel (1), characterized in that: A support member is provided between the symmetrical polishing wheels (1), which extends into the tube body and contacts the inner and outer walls of the tube body symmetrically with the polishing wheels (1), and the support member moves axially relative to the tube body.

2. The surface polishing auxiliary device according to claim 1, characterized in that: The support member comprises a support rod (3) axially extending into the tube body, and rolling balls (4) are symmetrically arranged on both sides of the support rod (3) and contact the inner wall of the tube body and correspond to the contact position of the polishing wheel (1) with the outer wall of the tube body.

3. The surface polishing auxiliary device according to claim 2, characterized in that: A lockable hinge rod (31) is symmetrically provided on one side of the support rod (3), and the rolling ball (4) is provided on each hinge rod (31).

4. The surface polishing auxiliary device according to claim 3, characterized in that: A horizontally slidable unloading slide rail (5) is also provided at the bottom of the support rod (3).

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