A cutter wheel device for a spinning machine

Abstract

The utility model discloses a knife wheel device for spinning machine belongs to the technical field of spinning, including upper knife wheel, rear knife wheel and front knife wheel, the upper knife wheel acts on the upper of metal pipe spare, the outside of metal pipe spare is equipped with the batten, the upper knife wheel acts on the just above of batten, the rear knife wheel acts on the rear of batten, the front knife wheel acts on the front of batten, when spinning processing, the upper knife wheel is under pressure to the center axle of metal pipe spare while rotating, and the front knife wheel and rear knife wheel always stick to the outer diameter surface of metal pipe spare. The utility model can press the batten on the outside of metal pipe spare to the inside diameter surface and form the inside batten, and the yield is high, and the processing is long and short.

Description

Technical Field

[0001] This utility model relates to the technical field of spinning, and in particular to a cutting wheel device for a spinning machine. Background Technology

[0002] A spinning machine is a machine tool used for spinning. Flow spinning of cylindrical parts is a thinning spinning forming process. During flow spinning, the metal moves axially along the mandrel while the inner diameter remains constant. This forming process is typically used to produce cylindrical parts. Currently, most flow spinning machines use two or three spinning wheels. The blank shape during flow spinning can be cylindrical or cup-shaped. The blank material can be obtained through conventional spinning, deep drawing, or forging, followed by machining to improve dimensional accuracy. This forming process involves the flow and plastic deformation of metal. Appropriate selection of the metal blank material, spinning forming wheels, spinning pressure, and feed speed can create a metal surface with high hardness, high wear resistance, and high gloss.

[0003] When production requires the manufacture of such... Figure 1 When a cylindrical structural component made of copper or aluminum with ribs on its inner diameter surface is manufactured using a hot forging process to meet performance requirements, the traditional process involves first preparing a blank such as... Figure 2 The blank shown is then directly machined to... Figure 1 Dimensions. This method results in low material yield, large processing volume, and high cost. When hot forging billets, the inner diameter surface can only be made into a smooth cylindrical surface due to limitations such as tooling. However, the outer diameter surface can be made into different conical or stepped surfaces by adjusting the amount of pressure applied during forging. Utility Model Content

[0004] This utility model addresses the shortcomings of existing technologies by providing a cutting wheel device for a spinning machine, which can press the ribs located on the outside of the metal pipe to the inner diameter surface to form inner ribs, resulting in a high yield and short processing time.

[0005] The technical solution of this utility model to solve the above-mentioned technical problems is as follows:

[0006] A spinning machine cutting wheel device includes an upper cutting wheel, a rear cutting wheel, and a front cutting wheel. The upper cutting wheel acts on the top of a metal tube. The metal tube has ribs on its outer surface. The upper cutting wheel acts directly above the ribs. The rear cutting wheel acts behind the ribs. The front cutting wheel acts in front of the ribs. During spinning, the upper cutting wheel rotates while pressing down towards the central axis of the metal tube. The front and rear cutting wheels remain in close contact with the outer diameter surface of the metal tube and do not move in the direction of the central axis.

[0007] The beneficial effects of adopting the above technical solution are that the cutting wheel device can be installed on a spinning machine for spinning processing. During spinning processing, the metal tube rotates at a speed of N1, and the upper cutting wheel, rear cutting wheel, and front cutting wheel rotate at a speed of N2 after being aligned, without moving in the front-to-back direction. During spinning processing, while the upper cutting wheel rotates at a speed of N2, it presses down towards the central axis of the metal tube at a speed of f. The front cutting wheel and rear cutting wheel always keep close to the outer diameter surface of the tube without moving in the center direction, which can press the ribs located on the outer side of the metal tube to the inner diameter surface to form inner ribs. The yield is high and the processing time is short.

[0008] Furthermore, the metal tube is installed on the outside of the mandrel, and the end of the mandrel is provided with a tail mold. The tail mold and the outside of the mandrel are jointly provided with a receiving groove. The receiving groove is arranged along the circumference of the tail mold and the mandrel, and the receiving groove corresponds to the position of the rib.

[0009] The beneficial effect of adopting the above technical solution is that when the upper cutter wheel presses down on the central axis of the metal pipe, it can press the outer ribs of the metal pipe into the receiving groove, which facilitates the formation of inner ribs on the inner diameter surface of the metal pipe.

[0010] Furthermore, the upper cutter wheel, the rear cutter wheel, and the front cutter wheel are evenly distributed along the circumference of the mandrel, with the upper cutter wheel located directly above the mandrel.

[0011] The beneficial effect of adopting the above technical solution is that the upper cutter wheel can press the ribs located on the outside of the metal pipe to the inner diameter surface to form the inner ribs, and the rear cutter wheel and the front cutter wheel can limit the metal pipe to prevent the metal pipe from shaking and affecting the yield.

[0012] Furthermore, the width of the upper cutting wheel is greater than the top width of the rib.

[0013] The beneficial effect of adopting the above technical solution is that it is convenient to press the ribs located on the outside of the metal pipe to the inner diameter surface to form the inner ribs by using the upper cutting wheel.

[0014] Furthermore, the front side of the rear cutter wheel is in close contact with the rear of the rib and the outer diameter surface of the metal pipe, and the forming angle between the front side of the outer diameter surface of the rear cutter wheel and the horizontal direction is 35-45°.

[0015] The beneficial effect of adopting the above technical solution is that the ribs can be squeezed to the front side of the rear cutter wheel, preventing the ribs from flowing to the rear side under the spinning action of the upper cutter wheel.

[0016] Furthermore, the rear side of the front cutter wheel is in close contact with the front of the rib and the outer diameter surface of the metal pipe, and the forming angle between the rear side of the outer diameter surface of the front cutter wheel and the horizontal direction is 35-45°.

[0017] The beneficial effect of adopting the above technical solution is that the ribs can be squeezed to the rear side of the front cutter wheel, preventing the ribs from flowing forward under the spinning action of the upper cutter wheel.

[0018] Furthermore, the upper cutter wheel, the rear cutter wheel, and the front cutter wheel are respectively mounted on the cutter wheel mounting shaft.

[0019] The beneficial effect of adopting the above technical solution is that the upper cutter wheel, the rear cutter wheel and the front cutter wheel can be installed and positioned through the cutter wheel mounting shaft.

[0020] Furthermore, the tail mold and the mandrel are detachably connected by bolts.

[0021] The beneficial effect of adopting the above technical solution is that the tail mold and the mandrel can be detachably connected by bolts.

[0022] Furthermore, the maximum outer diameter of the upper cutter wheel, the rear cutter wheel, and the front cutter wheel are all equal.

[0023] The beneficial effect of adopting the above technical solution is that when the spinning power shaft rotates at the same number of revolutions, the linear velocity of the outer diameter surface of each spinning wheel is the same, and the forces acting on the circumference of the pipe can cancel each other out, preventing instability in the spinning process. Attached Figure Description

[0024] Figure 1 This is a cross-sectional view of a cylindrical structural component in the background art;

[0025] Figure 2 This is a cross-sectional view of the billet in the background art;

[0026] Figure 3 This is a schematic diagram of the overall structure of the cutter wheel device in this utility model;

[0027] Figure 4 This is a cross-sectional view of the overall structure of the cutter wheel device in this utility model;

[0028] Figure 5 for Figure 4 Sectional view along axis AA;

[0029] Figure 6 for Figure 4 BB-direction sectional view;

[0030] Figure 7 for Figure 4 CC-direction sectional view;

[0031] Figure 8 This is a cross-sectional view of the metal pipe fitting before spinning in this utility model;

[0032] Figure 9 This is a cross-sectional view of the metal pipe fitting after spinning in this utility model.

[0033] Explanation of reference numerals in the attached drawings: 1. Upper cutter wheel; 2. Rear cutter wheel; 3. Front cutter wheel; 4. Metal pipe fitting; 5. Rib; 6. Mandrel; 7. Tail mold; 8. Receiving groove; 9. Inner rib. Detailed Implementation

[0034] The principles and features of this utility model are described below with reference to all the accompanying drawings. The examples given are only for explaining this utility model and are not intended to limit the scope of this utility model.

[0035] This utility model discloses a cutting wheel device for a spinning machine.

[0036] Reference Figure 3-9 A spinning machine cutting wheel device includes an upper cutting wheel 1, a rear cutting wheel 2, and a front cutting wheel 3. The upper cutting wheel 1 acts on the upper part of a metal tube 4. The metal tube 4 has ribs 5 on its outer side. The upper cutting wheel 1 acts directly above the ribs 5. The rear cutting wheel 2 acts behind the ribs 5. The front cutting wheel 3 acts in front of the ribs 5. During spinning, the upper cutting wheel 1 rotates while pressing down towards the central axis of the metal tube 4. The front cutting wheel 3 and the rear cutting wheel 2 are always in close contact with the outer diameter surface of the metal tube 4 without any movement in the direction of the central axis. This allows the ribs 5 located on the outer side of the metal tube 4 to be pressed to the inner diameter surface to form inner ribs 9. This results in a high yield and short processing time.

[0037] Specifically, it is first produced through a hot forging process. Figure 8 The blank shown is then machined by turning. Figure 8 The dimension indicated by the dotted line, i.e., metal fitting 4, is then spun from the outer diameter surface to the inner diameter surface of the metal fitting 4 using a spinning machine via the aforementioned cutting wheel device, thereby producing a product as shown in the figure. Figure 9 The structural components shown.

[0038] The upper cutter wheel 1, the rear cutter wheel 2, and the front cutter wheel 3 are respectively mounted on the cutter wheel mounting shaft, which can realize the installation and positioning of the upper cutter wheel 1, the rear cutter wheel 2, and the front cutter wheel 3.

[0039] The metal tube 4 is installed on the outside of the mandrel 6. The end of the mandrel 6 is provided with a tail mold 7. The tail mold 7 and the mandrel 6 are connected by bolts, realizing a detachable connection between the tail mold 7 and the mandrel 6. One end of the mandrel 6 is defined as the front side, and one end of the tail mold 7 is defined as the rear side.

[0040] The tail mold 7 and the mandrel 6 are provided with a receiving groove 8 on their outer sides. The receiving groove 8 is arranged around the circumference of the tail mold 7 and the mandrel 6. The receiving groove 8 corresponds to the position of the rib 5, so that when the upper cutter wheel 1 presses down on the central axis of the metal tube 4, the rib 5 on the outer side of the metal tube 4 can be pressed into the receiving groove 8, which facilitates the formation of the inner rib 9 on the inner diameter surface of the metal tube 4.

[0041] The upper cutter wheel 1, rear cutter wheel 2, and front cutter wheel 3 are evenly distributed along the circumference of the mandrel 6, with the included angle between any two adjacent cutter wheels being 120°, and the upper cutter wheel 1 being located directly above the mandrel 6. This allows the upper cutter wheel 1 to press the outer ribs 5 of the metal fitting 4 to the inner diameter surface to form the inner ribs 9, while the rear cutter wheel 2 and front cutter wheel 3 limit the movement of the metal fitting 4 to prevent it from shaking and affecting the yield.

[0042] like Figure 5 As shown, the width of the upper cutter wheel 1 is slightly larger than the top width of the rib 5, and the outer diameter surface of the upper cutter wheel 1 is a small-angle cam, which is symmetrical from left to right, so that the rib 5 located on the outside of the metal pipe 4 can be pressed to the inner diameter surface to form the inner rib 9 by the upper cutter wheel 1.

[0043] like Figure 6 As shown, the front side of the rear cutter wheel 2 is close to the rear of the rib 5 and the outer diameter surface of the metal pipe 4. The forming angle between the front side of the outer diameter surface of the rear cutter wheel 2 and the horizontal direction is 35-45°, which can squeeze the rib 5 to the front side of the rear cutter wheel 2 and prevent the rib 5 from flowing to the rear side under the spinning action of the upper cutter wheel 1.

[0044] like Figure 7 As shown, the rear side of the front cutter wheel 3 is in close contact with the front of the rib 5 and the outer diameter surface of the metal pipe 4. The forming angle between the rear side of the outer diameter surface of the front cutter wheel 3 and the horizontal direction is 35-45°, which can squeeze the rib 5 to the rear side of the front cutter wheel 3 and prevent the rib 5 from flowing forward under the spinning action of the upper cutter wheel 1.

[0045] The maximum outer diameter of the upper cutting wheel 1, the rear cutting wheel 2, and the front cutting wheel 3 are all equal, so that when the spinning power shaft rotates at the same number of revolutions, the linear velocity of the outer diameter of each spinning wheel is the same, and the forces acting on the circumference of the pipe can cancel each other out, preventing instability in the spinning process.

[0046] The implementation principle of the cutting wheel device for a spinning machine in this embodiment of the utility model is as follows: First, a cutting wheel is prepared by hot forging process. Figure 8 The blank shown is then machined by turning. Figure 8 The dimension indicated by the dotted line, i.e., metal fitting 4, is then spun from the outer diameter surface to the inner diameter surface of the metal fitting 4 using a spinning machine via the aforementioned cutting wheel device, thereby producing a product as shown in the figure. Figure 9The structural component shown. During spinning, the metal tube 4 rotates at a speed of N1. The upper cutter wheel 1, the rear cutter wheel 2, and the front cutter wheel 3 rotate at a speed of N2 after tool alignment, without moving in the front-to-back direction. During spinning, the upper cutter wheel 1 rotates at a speed of N2 while pressing down on the central axis of the metal tube 4 at a speed of f. The front cutter wheel 3 and the rear cutter wheel 2 always remain in close contact with the outer diameter surface of the tube, without any movement in the center direction. This allows the ribs 5 located on the outer side of the metal tube 4 to be pressed to the inner diameter surface to form the inner ribs 9.

[0047] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A cutting wheel device for a spinning machine, characterized in that: The machine includes an upper cutting wheel (1), a rear cutting wheel (2), and a front cutting wheel (3). The upper cutting wheel (1) acts on the upper part of the metal pipe (4). The metal pipe (4) has ribs (5) on its outside. The upper cutting wheel (1) acts directly above the ribs (5). The rear cutting wheel (2) acts behind the ribs (5). The front cutting wheel (3) acts in front of the ribs (5). During spinning, the upper cutting wheel (1) rotates while pressing down towards the central axis of the metal pipe (4). The front cutting wheel (3) and the rear cutting wheel (2) are always in close contact with the outer diameter surface of the metal pipe (4).

2. The cutting wheel device for a spinning machine according to claim 1, characterized in that: The metal pipe (4) is installed on the outside of the mandrel (6). The end of the mandrel (6) is provided with a tail mold (7). The tail mold (7) and the mandrel (6) are provided with a receiving groove (8) on their exterior. The receiving groove (8) is arranged along the circumference of the tail mold (7) and the mandrel (6). The receiving groove (8) corresponds to the position of the reinforcing bar (5).

3. The cutting wheel device for a spinning machine according to claim 2, characterized in that: The upper cutter wheel (1), the rear cutter wheel (2) and the front cutter wheel (3) are evenly distributed along the circumference of the mandrel (6), and the upper cutter wheel (1) is located directly above the mandrel (6).

4. The cutting wheel device for a spinning machine according to claim 2, characterized in that: The width of the upper cutter wheel (1) is greater than the top width of the rib (5).

5. The cutting wheel device for a spinning machine according to claim 1, characterized in that: The front side of the rear cutter wheel (2) is in close contact with the rear of the reinforcing bar (5) and the outer diameter surface of the metal pipe (4), and the rear side of the front cutter wheel (3) is in close contact with the front of the reinforcing bar (5) and the outer diameter surface of the metal pipe (4).

6. The cutting wheel device for a spinning machine according to claim 5, characterized in that: The forming angle between the front side of the outer diameter surface of the rear cutter wheel (2) and the horizontal direction is 35-45°, and the forming angle between the rear side of the outer diameter surface of the front cutter wheel (3) and the horizontal direction is 35-45°.

7. The cutting wheel device for a spinning machine according to claim 1, characterized in that: The upper cutter wheel (1), the rear cutter wheel (2) and the front cutter wheel (3) are respectively mounted on the cutter wheel mounting shaft.

8. The cutting wheel device for a spinning machine according to claim 2, characterized in that: The tail mold (7) and the mandrel (6) are detachably connected by bolts.

9. The cutting wheel device for a spinning machine according to claim 1, characterized in that: The maximum outer diameter of the upper cutter wheel (1), the rear cutter wheel (2), and the front cutter wheel (3) are all equal.

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