Auxiliary clamping device for reducing depth of center hole in end face of smelting cast ingot

Abstract

The utility model discloses an auxiliary clamping device for reducing the depth of center holes in the end faces of a smelting cast ingot, center holes clamped on a first tip and a second tip of a machine tool are formed in the two end faces of the cast ingot, and the auxiliary clamping device is arranged on a rear tailstock and supports the end face of the side of the cast ingot together with the second tip. And the depth of the center hole embedded into the second tip is reduced under the condition that the auxiliary clamping device and the second tip jointly keep clamping force on the end face of the cast ingot. On the basis that the auxiliary clamping device supports the cast ingot to be close to the end face of one side of the rear tailstock, the supporting acting force of a second tip of the rear tailstock on the end face of the cast ingot is reduced, and then the depth of a center hole embedded into the second tip is reduced in the state that the auxiliary clamping device and the second tip jointly keep the clamping force on the end face of the cast ingot. The auxiliary supporting device'shares' the supporting force of the second tip, so that the depth of the center hole of the cast ingot end face embedded into the second tip can be reduced, the width of waste cut off the cast ingot end face in the later period is reduced, and waste of cast ingot raw materials is reduced.

Description

Technical Field

[0001] This application relates to the field of smelting and casting ingot processing technology, and in particular to an auxiliary clamping device for reducing the depth of the center hole on the end face of a smelting and casting ingot. Background Technology

[0002] Melting and casting is a process in which metals or alloys are heated to a molten state, and impurities and harmful elements are removed through chemical reactions or physical separation methods to obtain pure metals or alloys. Melting typically uses a melting furnace to melt metal raw materials, including induction melting furnaces, electric arc melting furnaces, and vacuum melting furnaces. During melting, the metal raw materials are mixed with other auxiliary materials and added to the melting furnace simultaneously. After melting at a high temperature, the mixture is then shaped into an ingot within the furnace.

[0003] Due to the changes in the chemical state of the metal during the smelting process, as well as the influence of various furnace parameters (such as smelting temperature, duration, current, and voltage), the surface of the smelted ingot is relatively rough. Before the ingot is processed into metal products in the later stage, the surface of the ingot needs to be pre-processed, such as turning the surface and end faces, so that the surface and end faces of the ingot have a smooth surface structure, which facilitates the guarantee of processing accuracy in the later processing.

[0004] Currently, the initial processing of the smelted ingots is all done using machine tools, as shown in the instruction manual. Figure 2 The clamping and machining state is shown. However, to reduce the power consumption of the melting furnace, the ingots produced in a single melting process are typically large in size and weight. Therefore, to ensure the stability of the ingot during clamping and rotation machining on the machine tool, such as... Figure 2 As shown, a first center is set in the center of the machine tool chuck, which, together with the second center on the tailstock, is embedded and pressed into the center hole opened at the center of both ends of the ingot. The machine tool chuck is then used to clamp one side of the ingot, which can ensure the stability of the ingot during processing.

[0005] Before the first and second centers tighten the two ends of the ingot, a center blind hole needs to be drilled in the center of both ends. Since the first center has a machine tool chuck on one side, the center hole on that side can be drilled to a smaller depth under the chuck's clamping. However, for the second center on the tailstock side, which only supports the ingot end face, the center hole depth on that side is greater than that on the first center side to ensure effective support. Later, due to the unevenness of the end face caused by the center hole, the portion of the end face exceeding the center hole depth needs to be removed. Figure 4 As shown, this results in a larger cut-off width on the ingot end face on one side of the second tip, leading to a greater waste of ingot raw materials and a reduction in the output of finished products. Summary of the Invention

[0006] To address the aforementioned problems, this application aims to provide an auxiliary clamping device that reduces the depth of the center hole on the end face of the smelting ingot. This device can reduce the supporting force of the second tip on the tailstock, thereby reducing the depth of the center hole on the end face of the ingot and ultimately reducing the width of the scrap material removed from the end face of the ingot, thus reducing the waste of ingot raw materials.

[0007] To achieve the above objectives, the technical solution adopted in this application is as follows: an auxiliary clamping device for reducing the depth of the center hole on the end face of a smelting ingot, wherein the ingot has center holes on the first center and the second center of the tailstock at both ends, the auxiliary clamping device being disposed on the tailstock and together with the second center supporting the end face of the ingot, and the auxiliary clamping device and the second center maintaining a clamping force on the end face of the ingot while reducing the depth of the center hole embedded in the second center.

[0008] Preferably, the auxiliary clamping device includes an assembly cylinder axially limited and sleeved on the rear tailstock, and a support tip embedded in the ingot end face is provided on one side of the assembly cylinder at circumferential intervals.

[0009] Preferably, a rotary bearing is also provided between the assembly cylinder and the rear tailstock.

[0010] Preferably, fastening bolts that can be tightened onto the rotary bearing are also provided at circumferential intervals on the outer circumferential surface of the assembly cylinder.

[0011] The beneficial effects of this application are: by using an auxiliary clamping device to support the end face of the ingot near the tailstock, the supporting force of the second tip of the tailstock on the end face of the ingot is reduced. Thus, the auxiliary clamping device and the second tip together maintain the clamping force on the end face of the ingot, reducing the depth of the center hole embedded in the second tip. The auxiliary support device "shares" the supporting force of the second tip, thereby reducing the depth of the center hole embedded in the end face of the ingot, thereby reducing the width of the scrap material removed from the end face of the ingot later and reducing the waste of ingot raw materials. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the machine tool structure used for clamping ingots.

[0013] Figure 2 To hold the ingot in Figure 1 Diagram of a machine tool.

[0014] Figure 3 for Figure 2 Enlarged view of the structure at point A in the middle.

[0015] Figure 4 The diagram shows the portion of the ingot cut off after the center hole width has been completed.

[0016] Figure 5 This is a front view of the auxiliary clamping device of this application and an illustration of it being assembled on the rear tailstock.

[0017] Figure 6 For this application Figure 5 Side view and illustration of the support tip being embedded into the end face of the ingot.

[0018] Figure 7 The illustration shows a rotary bearing and fastening bolts installed between the assembly cylinder and the rear tailstock in this application.

[0019] Figure 8 The diagram shows a comparison between the current cut-off ingot width (top image) and the cut-off ingot width of this application (bottom image).

[0020] Figure 9 This is a photograph of an ingot currently mounted on a machine tool.

[0021] Figure 10 This is a physical illustration of the current single center hole and its depth.

[0022] In the diagram: b - blind hole; 6 - ingot. Detailed Implementation

[0023] To enable those skilled in the art to better understand the technical solutions of this application, the technical solutions of this application will be further described below in conjunction with the accompanying drawings and embodiments.

[0024] See attached document Figures 1-8 The diagram illustrates an auxiliary clamping device for reducing the depth of the center hole on the end face of a molten ingot. The ingot has center holes a on both end faces, which are clamped onto a first center 11 at the center of a machine tool chuck 1 and a second center 21 at the rear tailstock 2. These center holes a are pre-drilled before ingot clamping, and their depth is the same as the embedment depth of the first center 11 and the second center 21. The clamping state is as follows: Figure 2 As shown, the first tip 11 and the second tip 21 are embedded into the center holes a pre-drilled on both ends of the ingot. Then, the edge of one side of the ingot is clamped and fastened by the machine tool chuck 1. The ingot is rotated by the machine tool chuck 1 to perform the ingot processing operation.

[0025] To address the issue of excessive ingot scrap requiring removal due to the excessive embedment depth of the second tip 21 on one side of the tailstock 2, this application incorporates an auxiliary clamping device. This device is mounted on the tailstock 2 and, together with the second tip 21, supports the ingot's end face on that side. By supporting the end face through the auxiliary clamping device, the supporting force of the second tip 21 is reduced. Consequently, while maintaining a clamping force on the ingot end face, the depth of the central hole a embedded in the second tip 21 is reduced. The auxiliary support device "shares" the supporting force of the second tip 21, thereby reducing the depth of the central hole a embedded in the ingot end face. This decreases the width of the scrap material removed from the ingot end face later, reducing the waste of ingot raw materials.

[0026] Specifically, such as Figure 5-6 As shown, the auxiliary clamping device includes an assembly cylinder 3 axially limited and sleeved on the rear tailstock 2, and support tips 31 embedded in the ingot end face are arranged circumferentially on one side of the assembly cylinder 3. Wherein, as Figure 6 As shown, one side of the inner cavity of the assembly cylinder 3 is preferably configured with a stepped structure. This step allows it to be fitted onto the tailstock 2 and axially limited, driving multiple support tips 31 to be securely embedded into the ingot end face (when a central hole a is opened on the ingot end face for embedding the second tip 21, blind holes b are simultaneously opened on the end face for embedding each support tip 31). Through the combined action of multiple support tips 31 and the second tip 21, while achieving stable support for this side end face of the ingot, the supporting force of the second tip 21 is reduced, thereby reducing the depth of the central hole a (the depth of the central hole a is preferably the same as the depth of the multiple blind holes b). When partially removing the central hole a later, the width of the ingot cut off can be effectively reduced (the width of scrap cut under a single central hole a support versus the width under the support of the central hole a and blind holes b is as follows: ...). Figure 8 (As shown).

[0027] During the machining process, the ingot is driven to rotate by the machine tool chuck 1. In this state, to reduce wear between the assembly cylinder 3 and the circumferential surface of the tailstock 1, such as... Figure 7 As shown, a rotary bearing 4 is also provided between the assembly cylinder 3 and the rear tailstock 2. The inner ring of the rotary bearing 4 is preferably fixed on the rear tailstock 2, while the assembly cylinder 3 is sleeved on the outer ring of the rotary bearing 4. Under the action of the rotary bearing 4, the rotational wear of the assembly cylinder 3 and the rear tailstock 2 can be solved, ensuring the accuracy of the support tip 31 in supporting the end face of the ingot and avoiding radial runout of the ingot during rotation due to wear, which would affect the machining accuracy.

[0028] To further achieve a tight connection between the assembly cylinder 3 and the rotary bearing 4, such as Figure 7As shown, fastening bolts 5 are also provided at circumferential intervals on the outer circumferential surface of the assembly cylinder 3, which can be tightened onto the rotary bearing 4. After the assembly cylinder 3 is sleeved on the rotary bearing 4, the multiple fastening bolts 5 are rotated to tighten them against the outer ring surface of the rotary bearing 4, thereby achieving the assembly and fastening of the assembly cylinder 3 and the rotary bearing 4, which can improve the stability during the rotational processing of the ingot.

[0029] The principle of this application is as follows: When using the auxiliary clamping device, firstly, blind holes b and center holes a for the first tip 11 and the second tip 21 are opened on the end face of the ingot according to the position of the support tip 31 on the assembly cylinder 3. Then, the assembly cylinder 3 is sleeved on the rotary bearing 4 provided on the tailstock 2, and the assembly cylinder 3 and the tailstock 2 are connected and fastened by rotating fastening bolts 5. Next, the ingot is hoisted between the first tip 11 and the second tip 21, and then the tailstock 2 is driven to move towards the machine tool chuck 1, so that the second tip 21 and multiple support tips 31 are simultaneously embedded in the center hole a and the blind hole b. The tailstock 2 is continued to be driven, driving the ingot to move axially, so that the first tip a is embedded in the center hole a on the other end face of the ingot. Then, the end of the ingot is clamped by the machine tool chuck 1, and the rotation of the machine tool chuck 1 drives the ingot to rotate for processing.

[0030] The foregoing has shown and described the basic principles, main features, and advantages of this application. Various changes and modifications may be made to this application without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims.

Claims

1. An auxiliary clamping device for reducing the depth of the center hole on the end face of a smelting ingot, wherein the ingot has center holes (a) on both end faces that are clamped to a first center (11) at the center of a machine tool chuck (1) and a second center (21) at the tailstock (2), characterized in that: The auxiliary clamping device is mounted on the rear tailstock (2) and together with the second tip (21) supports the side end face of the ingot. The auxiliary clamping device and the second tip (21) together maintain the clamping force on the end face of the ingot and reduce the depth of the center hole (a) embedded in the second tip (21).

2. The auxiliary clamping device according to claim 1, characterized in that: The auxiliary clamping device includes an assembly cylinder (3) axially limited and sleeved on the rear tailstock (2), and a support tip (31) embedded in the end face of the ingot is provided on one side of the assembly cylinder (3) at circumferential intervals.

3. The auxiliary clamping device according to claim 2, characterized in that: A rotary bearing (4) is also provided between the assembly cylinder (3) and the rear tailstock (2).

4. The auxiliary clamping device according to claim 3, characterized in that: Fastening bolts (5) that can be tightened onto the rotary bearing (4) are also provided on the outer circumferential surface of the assembly cylinder (3) at circumferential intervals.

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