A rotary friction welding device and method for quartz workpieces

Abstract

The present invention discloses a rotary friction welding device and method for quartz workpieces. The friction welding device includes a linear drive device and two rotary disks, wherein one rotary disk is connected to a rotating spindle, the rotating spindle is connected to the rotary drive device, and the other rotary disk is connected to the linear drive device. The rotary disk is provided with a clamping claw for clamping the quartz workpiece. A temperature sensor is provided on the outside of the contact part of the two quartz workpieces. The temperature sensor is used to detect the temperature of the contact part of the two quartz workpieces and transmit the detected temperature value to a controller. The controller determines whether the detected temperature reaches the softening temperature and outputs a control signal to the linear drive device and the rotary drive device to control the rotation or movement state of the corresponding rotary disk. The friction welding method includes the following steps: center alignment and clamping of the quartz workpieces; friction welding of the two quartz workpieces; and high-temperature annealing. The entire method does not require consumption of hydrogen and oxygen, reduces the operational hazards of hot working, and the quartz workpieces are firmly butted. The method is simple.

Description

Technical Field

[0001] The invention belongs to the technical field of quartz processing, and in particular relates to a rotary friction welding device and method for quartz workpieces. Background Art

[0002] During the hot working of quartz, two quartz workpieces are joined together. This is typically done by welding and fire-polishing the raw materials at high temperatures generated by hydrogen combustion and oxygen-assisted combustion. Hot working not only consumes large amounts of hydrogen and oxygen, resulting in significant costs, but also poses a safety hazard due to the explosion potential of hydrogen concentrations between 4.0% and 75.6% when exposed to fire. Summary of the Invention

[0003] The purpose of the present invention is to solve the problems in the background technology and to provide a rotary friction welding device and method for quartz workpieces.

[0004] To achieve the above object, the present invention proposes a method for rotary friction welding of quartz workpieces, comprising the following steps:

[0005] S01. The two quartz workpieces are fixedly mounted on two center-aligned rotating disks, with the end faces of the two quartz workpieces in relative contact;

[0006] S02. Drive one of the rotating disks at a speed of 3600-5400 rpm until the heat generated by the high-speed friction at the contact point of the two quartz workpieces reaches the softening point. When the contact point of the two quartz workpieces emits a bright light, reduce the rotating disk speed and drive the quartz workpiece on the other rotating disk to move so that the contact points of the two quartz workpieces are squeezed against each other to achieve a tight connection;

[0007] S03. High temperature annealing to finally complete the welding of the two quartz workpieces.

[0008] Among them, the rotation speed of the turntable can be adjusted according to the diameter of the quartz workpiece. The selection of this rotation speed is obtained by the inventor after research. If the rotation speed is too low, the contact part of the quartz workpiece cannot reach the softening point. If the rotation speed is too high, the temperature of the contact part of the quartz workpiece is too high, making the quartz difficult to shape.

[0009] Preferably, in the step S02, when the quartz workpiece on the other turntable is driven to move, the moving speed of the quartz workpiece is controlled to be 0.04-0.07 mm / s. This moving speed is for making the connection parts of the two quartz workpieces tightly connected and less prone to dislocation.

[0010] Preferably, in the step S02, when the quartz workpiece on the other rotating disk is driven to move, the moving speed of the quartz workpiece is controlled to 0.06 mm / s, which enables the two quartz workpieces to be tightly connected to each other for the best effect.

[0011] Preferably, the quartz workpiece is a quartz tube, a quartz flange, or a quartz rod, which facilitates rotational friction welding between the quartz workpieces.

[0012] Preferably, the connecting end of the quartz workpiece is cylindrical or annular in shape, and the diameter of the connecting end of the quartz workpiece does not exceed 150 mm, which facilitates rotational friction welding between the quartz workpieces. The connection effect is good under this diameter size.

[0013] Preferably, when the contact portion of the two quartz workpieces emits light, the rotation speed of the rotary disk is reduced at a rate of 1000-2000 r / min until the rotary disk stops. This deceleration rate ensures that the welded portion of the quartz workpieces will not break directly due to excessive temperature drop.

[0014] The present invention also proposes a rotary friction welding device for quartz workpieces, including a linear drive device and two rotary disks, one of which is connected to a rotating spindle, which is connected to a rotating drive device, and the other rotary disk is connected to a linear drive device. The rotary disk is provided with claws for clamping the quartz workpieces, and a temperature sensor is provided on the outside of the contact parts of the two quartz workpieces. The temperature sensor is used to detect the temperature of the contact parts of the two quartz workpieces. The temperature sensor transmits the detected temperature value to a controller. The controller determines whether the temperature of the contact parts of the two quartz workpieces reaches the softening temperature, and outputs a control signal to the linear drive device and the rotary drive device to control the rotation or movement state of the corresponding rotary disk.

[0015] Preferably, the linear drive device includes but is not limited to a hydraulic push rod or an electric push rod. Preferably, the linear drive device is a hydraulic push rod, so that the turntable can move smoothly linearly and the moving state is easy to control. The rotary drive device includes a drive motor.

[0016] Preferably, a clamping mechanism is provided on the outside of the contact parts of the two quartz workpieces, and the clamping mechanism includes a frame arranged parallel to the quartz workpiece, and the frame is provided with a support plate, a screw rod and a guide column, the screw rod passes through the middle of the support plate and is threadedly connected to the support plate, the end of the screw rod is connected to the servo motor, and the two guide columns located on the same side pass through the left and right ends of the support plate respectively, and a cylinder is installed on the support plate, and an arc-shaped clamping jaw is installed at the end of the push rod of the cylinder, and the arc-shaped clamping jaw is semicircular, and the arc-shaped clamping jaw is adapted to the outer contour of the side surfaces of the two quartz workpieces facing it.

[0017] Preferably, the servo motor is connected to a controller.

[0018] The beneficial effects of the present invention are as follows: the present invention clamps two quartz workpieces on two rotating disks, and the contact parts of the two quartz workpieces are heated up or even reach a softening point under the action of high-speed rotation friction. The molecules of the contact parts of the two quartz workpieces are fully moved relative to each other by applying pressure to achieve a tight connection. After high-temperature annealing to reduce stress, the welding is completed. The entire friction welding method does not require the consumption of hydrogen and oxygen, reduces the operational hazards of hot working, and the quartz workpieces are firmly butted together. The method is simple.

[0019] The features and advantages of the present invention will be described in detail through embodiments with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present invention.

[0021] Figure 2 Schematic diagram of a clamping mechanism according to an embodiment of the present invention.

[0022] In the figure: 1-turntable, 2-quartz workpiece, 3-linear drive device, 4-support plate, 5-cylinder, 6-screw, 7-temperature sensor, 51-arc-shaped clamping jaw. DETAILED DESCRIPTION

[0023] See Figure 1 and Figure 2 The present invention provides a rotary friction welding device for quartz workpieces, including a linear drive device 3 and two rotary disks 1. The rotary disk 1 on the left is connected to a rotating spindle, which is connected to a rotating drive device. The rotary disk 1 on the right is connected to the linear drive device 3. A clamping claw for clamping the quartz workpiece 2 is provided on the rotary disk 1. A temperature sensor 7 is provided on the outside of the contact part of the two quartz workpieces 2. The temperature sensor 7 is used to detect the temperature of the contact part of the two quartz workpieces 2. The temperature sensor 7 transmits the detected temperature value to a controller. The controller determines whether the temperature of the contact part of the two quartz workpieces 2 reaches the softening temperature, and outputs a control signal to the linear drive device 3 and the rotary drive device to control the rotation or movement state of the corresponding rotary disk 1.

[0024] The temperature sensor 7 is provided to ensure that the contact portion of the quartz workpiece 2 is frictionally heated to the softening point, and the rotation or movement control of the turntable 1 is relatively accurate, thereby ensuring the connection effect of the quartz workpiece 2.

[0025] Furthermore, the linear drive device 3 is a hydraulic push rod, the rotary drive device includes a drive motor, and the controller is connected to the hydraulic push rod and the drive motor respectively and controls the working states of the hydraulic push rod and the drive motor.

[0026] Furthermore, a clamping mechanism is provided on the outside of the contact portion of the two quartz workpieces 2. The clamping mechanism includes a frame arranged parallel to the quartz workpiece 2. A support plate 4, a screw rod 6 and a guide column are provided on the frame. The screw rod 6 passes through the middle of the support plate 4 and is threadedly connected to the support plate 4. The end of the screw rod 6 is connected to the servo motor. The two guide columns on the same side pass through the left and right ends of the support plate 4 respectively. A cylinder 5 is installed on the support plate 4. An arc-shaped clamping claw 51 is installed on the push rod end of the cylinder 5. The arc-shaped clamping claw 51 is semicircular and made of iridium material. The clamping jaws 15 are adapted to the outer contours of the sides of the two quartz workpieces 2 facing them. During the extrusion of the quartz workpieces 2, the cylinder 5 acts to move the arc-shaped clamping jaws 51 to the outside of the contact portion of the two quartz workpieces 2. The two arc-shaped clamping jaws 2 form a closed circle, so that the welding portion of the two quartz workpieces 2 is cylindrical. The servo motor and the cylinder 5 are both connected to the controller and the working state is controlled by the controller. The servo motor can drive the screw 6 to rotate and control the horizontal movement of the arc-shaped clamping jaw 51 according to the clamping requirements of the welding portion of the quartz workpiece 2.

[0027] The rotary friction welding methods for quartz workpieces in the following embodiments are all performed using the rotary friction welding device for quartz workpieces described above.

[0028] Example 1

[0029] This embodiment provides a method for rotary friction welding of a quartz workpiece, comprising the following steps:

[0030] S01. Take two quartz rods with a diameter of 30 mm and fix them on the claws of two center-aligned rotating disks, with the end faces of the two quartz rods in contact with each other.

[0031] S02. The rotation drive device rotates the spindle, driving the rotating disk on the same side at 3800 r / min. The heat generated by the high-speed friction at the contact point between the two quartz rods reaches the softening point. When the contact point between the two quartz rods emits a bright light, the rotation of the rotating disk is reduced to 1400 r / min until it stops. The hydraulic push rod drives the quartz workpiece on the other rotating disk at a rate of 0.06 mm / s, so that the contact points of the two quartz rods are pressed against each other to achieve a tight connection.

[0032] S03. High temperature annealing to finally complete the welding of the two quartz rods.

[0033] Example 2. This example provides a method for rotational friction welding of quartz workpieces. Except that the two quartz workpieces are a quartz rod and a quartz tube with a diameter of 40 mm, respectively, in step S02, the rotation drive device drives the turntable on the same side of the main shaft to rotate at a speed of 4200 r / min, and the remaining steps are the same as in Example 1.

[0034] Example 3. This example provides a method for rotational friction welding of quartz workpieces. Except that the two quartz workpieces are a quartz rod and a quartz flange with a diameter of 45 mm, the rotation drive device in step S02 drives the turntable on the same side of the main shaft to rotate at a speed of 4500 r / min. The remaining steps are the same as those in Example 1.

[0035] Example 3. This example provides a method for rotational friction welding of quartz workpieces. Except that the two quartz workpieces are a quartz rod and a quartz flange with a diameter of 45 mm, the rotation drive device in step S02 drives the turntable on the same side of the main shaft to rotate at a speed of 4200 r / min. The remaining steps are the same as those in Example 1.

[0036] The above embodiments are intended to illustrate the present invention, not to limit the present invention. Any solution that is a simple transformation of the present invention falls within the protection scope of the present invention.

Claims

1. A method for rotary friction welding of quartz workpieces, characterized in that: The following steps are involved: S01. The two quartz workpieces are fixedly mounted on two center-aligned rotating disks, with the end faces of the two quartz workpieces in relative contact; S02. Drive one of the rotating disks at a speed of 3600-5400 rpm until the heat generated by the high-speed friction at the contact point of the two quartz workpieces reaches the softening point. When the contact point of the two quartz workpieces emits a bright light, reduce the rotating disk speed and drive the quartz workpiece on the other rotating disk to move so that the contact points of the two quartz workpieces are squeezed against each other to achieve a tight connection; S03 high temperature annealing, finally completing the welding of the two quartz workpieces; The rotary friction welding method is carried out on a rotary friction welding device, which includes a linear drive device and two rotary disks, one of which is connected to a rotating spindle, which is connected to a rotating drive device, and the other is connected to a linear drive device. The rotary disk is provided with a clamping claw for clamping a quartz workpiece, and a temperature sensor is provided on the outside of the contact part of the two quartz workpieces. The temperature sensor is used to detect the temperature of the contact part of the two quartz workpieces. The temperature sensor transmits the detected temperature value to a controller, which determines whether the temperature of the contact part of the two quartz workpieces reaches the softening temperature, and outputs a control signal to the linear drive device and the rotary drive device to control the contact part. In response to the rotation or movement of the rotating disk, a clamping mechanism is set outside the contact parts of the two quartz workpieces, and the clamping mechanism includes a frame arranged parallel to the quartz workpiece, and the frame is provided with a support plate, a screw rod and a guide column. The screw rod passes through the middle of the support plate and is threadedly connected to the support plate. The end of the screw rod is connected to the servo motor. The two guide columns located on the same side pass through the left and right ends of the support plate respectively. A cylinder is installed on the support plate, and an arc-shaped clamping jaw is installed at the end of the push rod of the cylinder. The arc-shaped clamping jaw is semicircular, and the arc-shaped clamping jaw is adapted to the outer contour of the side of the two quartz workpieces facing it. The action of the cylinder causes the arc-shaped clamping jaw to move to the outside of the contact part of the two quartz workpieces, and the two arc-shaped clamping jaws form a closed circle, so that the welding part of the two quartz workpieces is cylindrical.

2. The method for rotary friction welding of quartz workpieces according to claim 1, wherein: In the step S02, when the quartz workpiece on the other rotating disk is driven to move, the moving speed of the quartz workpiece is controlled to be 0.04-0.07 mm / s.

3. The method for rotary friction welding of quartz workpieces according to claim 1, wherein: In the step S02, when the quartz workpiece on the other rotating disk is driven to move, the moving speed of the quartz workpiece is controlled to be 0.06 mm / s.

4. The method for rotary friction welding of quartz workpieces according to claim 1, wherein: The quartz workpiece is a quartz tube, a quartz flange or a quartz rod.

5. The method for rotary friction welding of quartz workpieces according to claim 1, wherein: The connecting end of the quartz workpiece is in a cylindrical or annular shape, and the diameter of the connecting end of the quartz workpiece does not exceed 150 mm.

6. The method for rotary friction welding of quartz workpieces according to claim 1, wherein: When the contact portion of the two quartz workpieces emits bright light, the rotation speed of the rotating disk is reduced at a rate of 1000 to 2000 r / min until the rotating disk stops.

7. The method for rotary friction welding of quartz workpieces according to claim 1, wherein: The linear drive device is a hydraulic push rod, and the rotary drive device includes a drive motor.

8. The method for rotary friction welding of quartz workpieces according to claim 1, wherein: The servo motor is connected to a controller.

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