Ring swaging horizontal cutting method

Abstract

The application discloses a ring forging horizontal cutting method, and steps are as follows: horizontally clamping the ring forging on a rotary workbench, the ring forging being coaxial with the rotary workbench, horizontally clamping a circular saw blade on a gear box, the circular saw blade being driven to rotate by a motor on the gear box, the gear box being installed on a feeding slide, the circular saw blade being capable of feeding towards the ring forging on the rotary workbench along the radial direction of the rotary workbench under the driving of the feeding slide, so that the circular saw blade can horizontally cut the ring forging on the rotary workbench; controlling the rotation of the circular saw blade and making the circular saw blade cut the ring forging under the driving of the feeding slide. The cutting method combines the intermittent feeding of the circular saw blade and the intermittent rotation of the rotary workbench for cooperation, and firstly makes the circular saw blade safely and efficiently cut through the local side wall of the ring forging, and then makes the ring forging continuously rotate to cut the ring forging into two, so that the horizontal cutting work of the ring forging can be safely, efficiently and smoothly performed.

Description

Technical Field

[0001] This invention relates to the manufacturing process of ring forgings, specifically to a method for horizontally cutting ring forgings. Background Technology

[0002] Easily deformable ring forgings with large diameters, small axial heights, or thin radial thicknesses are prone to abnormal deformation during forging, leading to scrap. Therefore, a machining allowance of 2-4 cm is intentionally added during forging to improve rigidity and prevent abnormal deformation. However, this increases material waste by 10-25% and significantly increases the machining workload during subsequent finishing, reducing production efficiency. To address this issue, a multi-piece ring forging can be forged as a single unit, with an axial height equal to the sum of the axial heights of two or more easily deformable ring forgings. Then, a circular saw blade is used to radially slit the multi-piece ring forging, resulting in two or more individual easily deformable ring forgings. This significantly reduces material waste and improves production efficiency. When slitting the multi-piece ring forging, there are two placement methods: vertical placement, where the ring forging axis is parallel to the ground, and vertical placement... When placed horizontally, the axis of the ring forging is perpendicular to the ground. When the ring forging diameter is relatively small (usually below 1.5 meters), vertical cutting is easier and less restricted by factory height, fixtures, or turntables. However, when the ring forging diameter is large (usually between 1.5 meters and 8 meters, or even larger), vertical placement becomes limited by factory height and crane height, posing greater safety risks during hoisting and increasing the risk of abnormal deformation and tilting. Furthermore, the size and cost of the cutting equipment increase significantly. Therefore, for ring forgings with large diameters, horizontal cutting is more suitable. A safe and efficient method for horizontal cutting of ring forgings is urgently needed. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a method for horizontally cutting ring forgings that can safely and efficiently perform horizontal cutting.

[0004] To solve the above problems, the technical solution adopted by the present invention is: a method for horizontal cutting of ring forgings, characterized by the following steps: (1) The ring forging is horizontally clamped on the rotary worktable with its axis vertical. The ring forging and the rotary worktable are coaxial. The circular saw blade is horizontally clamped on the gearbox with its axis vertical. The circular saw blade is driven to rotate by the motor on the gearbox. The gearbox is installed on the feed slide. Driven by the feed slide, the circular saw blade can feed along the radial direction of the rotary worktable toward the ring forging on the rotary worktable, so that the circular saw blade can horizontally cut the ring forging fixed on the rotary worktable. (2) Control the rotation of the circular saw blade and feed the ring forging under the drive of the feed slide; (3) As the circular saw blade feeds and cuts, the number of working teeth on the circular saw blade that participate in cutting the ring forging will gradually increase. The number of working teeth on the circular saw blade is set to A, and the number of safe cutting teeth on the circular saw blade is set to B. When the circular saw blade feeds and cuts to the set first depth, so that A = (0.8~1.2) × B, the circular saw blade stops feeding but continues to rotate. Then, in order to cooperate with the next feed, the angle of the rotary table is controlled to rotate forward to reduce the number of working teeth on the circular saw blade that participate in cutting. A is rounded to the nearest integer. (4) Then the circular saw blade continues to feed inward to cut. When the circular saw blade feeds to the set second depth so that A = (0.8~1.2) × B, the circular saw blade stops feeding but continues to rotate. Then, in order to cooperate with the next feed, the angle of the rotary table is controlled to rotate forward to reduce the number of working teeth on the circular saw blade participating in the cutting. A is rounded to the nearest integer. (5) Repeat the operation process of step (4) until the side wall of the ring forging is cut through. During each step (4), whenever the circular saw blade feeds to the set depth so that A = (0.8~1.2) × B, the circular saw blade stops feeding but keeps rotating. Then, the angle of the rotary table is controlled to rotate forward in order to cooperate with the next feed. (6) After the circular saw blade cuts through the side wall of the ring forging, the circular saw blade stops feeding but continues to rotate. Then, the rotary table is controlled to rotate with the ring forging until the upper and lower parts of the ring forging are cut apart.

[0005] Furthermore, in the aforementioned horizontal cutting method for ring forgings, when the circular saw blade feeds inward, the rotary table is controlled to rotate slowly in the forward direction with the ring forging at a set first linear velocity, thereby eliminating the adverse effects on the cutting work caused by the assembly gap of the rotary table. The first linear velocity is 0.1 to 0.5 mm / s.

[0006] Furthermore, in the aforementioned method for horizontal cutting of ring forgings, in steps (3), (4), and (5), each time the circular saw blade stops feeding, the rotary table is controlled to rotate at a set second linear velocity to complete the set angle in order to cooperate with the next feed. The second linear velocity is 1 to 5 mm / s.

[0007] Furthermore, in the aforementioned horizontal cutting method for ring forgings, the inward feed speed of the circular saw blade during cutting is 1–10 mm / s.

[0008] Furthermore, in the aforementioned method for horizontal cutting of ring forgings, in steps (3), (4), and (5), the angle of forward rotation of the rotary table is set to 1 to 10 degrees each time the circular saw blade stops feeding.

[0009] Furthermore, in the aforementioned horizontal cutting method for ring forgings, the ring forgings are mounted on a rotary worktable using a clamping device. The clamping device comprises several clamping units arranged circumferentially on the rotary worktable. Each clamping unit includes a clamping seat, which is locked to the rotary worktable by bolts and nuts that mate with T-shaped grooves on the rotary worktable. After loosening the bolts, the clamping seat can move along its T-shaped groove to adjust its radial position on the rotary worktable. At least two clamping support mechanisms are sequentially arranged on the clamping seat from bottom to top along the height direction. Each clamping support mechanism corresponds one-to-one with each easily deformable ring forging to be cut in the multi-in-one ring forging. Each clamping support mechanism includes a slider that can slide radially along the rotary worktable, a center point located at the outer end of the slider, and a sliding drive mechanism that drives the slider to slide radially. The slider in the lowest clamping support mechanism is mounted on the clamping seat via a linear guide rail. Each of the remaining clamping supports... The slider in the mechanism is mounted on the upper surface of the slider in the adjacent clamping support mechanism below it via a linear guide rail; the sliding drive mechanism includes: a rotatable screw with a nut threaded onto it, the nut being fixedly connected to the slider; the screw in the lowest clamping support mechanism is mounted on the clamping seat via a bearing, and the screws in each of the remaining clamping support mechanisms are mounted on the sliders in the adjacent clamping support mechanisms below them via bearings; after the multi-in-one ring forging is placed on the rotary worktable, as the sliders in each clamping unit are driven radially outward by their respective sliding drive mechanisms, each tip can clamp and support the inner wall of the multi-in-one ring forging from the inside out, so that the multi-in-one ring forging can be clamped and positioned on the rotary worktable, and each easily deformable ring forging in the multi-in-one ring forging can be clamped and supported by the tip in its corresponding clamping support mechanism, so that when the easily deformable ring forgings on the multi-in-one ring forging are cut and separated, they can be supported by the corresponding tip and will not fall and press on the saw blade.

[0010] Furthermore, in the aforementioned horizontal cutting method for ring forgings, each of the top points above the bottommost clamping support mechanism is arranged inclined upwards from the inside out, so that these top points can be inclined upwards and clamped against the inner wall of the multi-in-one ring forging.

[0011] Furthermore, in the aforementioned horizontal cutting method for ring forgings, each slider above the bottommost clamping support mechanism is arranged inclined upwards from the inside out, so that when these sliders slide outwards, they can drive the tips on them to move obliquely upwards from the inside out, thereby enabling the tips on these sliders to clamp and support the inner wall of the multi-in-one ring forging obliquely upwards.

[0012] Furthermore, the aforementioned method for horizontal cutting of ring forgings further includes a centering mechanism. The centering mechanism comprises several support seats arranged circumferentially on a rotary worktable. Each support seat is locked to the rotary worktable by bolts and nuts that mate with T-shaped grooves on the worktable. After loosening the bolts, each support seat can move along its T-shaped groove to adjust its radial position on the rotary worktable. Each support seat is fixed with a centering frame and a reference platform. The reference platform is located outside the centering frame, and the centering frame is arranged radially along the rotary worktable. The frame is equipped with a downwardly inclined correction guide rod and a vertically arranged positioning guide rod. The correction guide rod is located above the positioning guide rod, and the lower end of the correction guide rod is connected to the upper end of the positioning guide rod. During the process of the multi-in-one ring forging being horizontally suspended on the reference platform of the rotary worktable, each correction guide rod can enter the lower end of the ring forging and correct and center the multi-in-one ring forging. Then, each positioning guide rod can position the multi-in-one ring forging so that the multi-in-one ring forging is coaxial with the rotary worktable. Each reference platform is used to provide horizontal support for the multi-in-one ring forging.

[0013] Furthermore, in the aforementioned method for horizontal cutting of ring forgings, the structure of the reference platform includes: a reference base, in which a support plate capable of floating up and down is installed for supporting the multi-in-one ring forging; a spring is installed between the support plate and the reference base; when the multi-in-one ring forging is placed on the support plate, the support plate will move down until it falls onto the reference base, and the spring will be compressed to buffer the fall of the multi-in-one ring forging.

[0014] The advantages of this invention are as follows: The horizontal cutting method for ring forgings, while ensuring the safe cutting of the circular saw blade, combines the intermittent feed of the circular saw blade with the intermittent rotation of the rotary table to coordinate the feed. First, the circular saw blade safely and efficiently cuts through a localized sidewall of the ring forging, and then the ring forging is continuously rotated to cut it in two. This cutting method enables safe, efficient, and smooth horizontal cutting of large, easily deformable ring forgings. Furthermore, when the ring forging is horizontally cut, the unsupported portion of the ring forging on the circular saw blade may fall and clamp the saw blade, easily causing it to break. The clamping device effectively supports the portion of the ring forging above the circular saw blade when the ring forging is cut, preventing the saw blade from being clamped and damaged. This not only further ensures the safe and smooth operation of horizontal cutting but also significantly reduces the frequency and time required for downtime maintenance and replacement due to saw blade damage, further improving the efficiency of horizontal cutting and reducing cutting costs. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the cutting machine using the horizontal cutting method for ring forgings described in this invention.

[0016] Figure 2 This is a schematic diagram of the clamping device described in this invention.

[0017] Figure 3 This is a schematic diagram of the structure when the circular saw blade feeds inward to cut to the first depth.

[0018] Figure 4 A schematic diagram showing the angle set for the rotary table to rotate forward after the circular saw blade cuts to the first depth.

[0019] Figure 5 This is a schematic diagram of the structure when the circular saw blade feeds inward to cut to the second depth. Detailed Implementation

[0020] The present invention will now be described in further detail with reference to specific embodiments and accompanying drawings.

[0021] like Figure 1 , Figure 2 As shown, the method for horizontal cutting of ring forgings includes the following steps: (1) The ring forging 1 is horizontally clamped on the rotary table 2 with its axis vertical. The ring forging 1 and the rotary table 2 are coaxial. The circular saw blade 3 is horizontally clamped on the gearbox 4 with its axis vertical. The circular saw blade 3 is driven to rotate by the motor on the gearbox 4. The gearbox 4 is installed on the feed slide. Driven by the feed slide, the circular saw blade 3 can feed along the radial direction of the rotary table 2 toward the ring forging on the rotary table 2, so that the circular saw blade 3 can perform horizontal cutting on the ring forging 1 fixed on the rotary table 2. The rotary table 2, gearbox and feed slide are all conventional technologies in the field of cutting equipment, and will not be described in detail. (2) Control the circular saw blade 3 to rotate and make the circular saw blade 3 feed and cut the ring forging 1 under the drive of the feed slide; (3) such as Figure 3 , Figure 4 As shown, in this embodiment, as the circular saw blade 3 feeds and cuts, the number of working teeth on the circular saw blade 3 participating in the cutting of the ring forging 1 gradually increases. The number of working teeth on the circular saw blade 3 is set as A, and the safe cutting number of teeth on the circular saw blade 3 is set as B. When the circular saw blade 3 feeds and cuts to a set first depth S1, causing A = (0.8~1.2) × B, the circular saw blade 3 stops feeding but continues to rotate. Then, to coordinate with the next feed, the rotary table 2 is controlled to rotate forward by a set angle α to reduce the number of working teeth on the circular saw blade 3 participating in the cutting. A is rounded to the nearest integer. In this embodiment, the first depth S1 is 15mm, corresponding to a working tooth number A of 7 and a safe cutting tooth number B of 7. In actual production, while ensuring safety, A can be slightly larger than B to accelerate cutting efficiency. Of course, A can also be smaller than B to relatively extend the service life of the circular saw blade. When the circular saw blade 3 stops feeding, to coordinate with the next... The angle α for controlling the forward rotation of the rotary table 2 is set to 1 to 10 degrees. In this embodiment, the angle α is preferably 4 degrees. The angle α should not be too small. If the angle α is too small, the circular saw blade will continue to feed inward to a small depth, and the number of working teeth of the circular saw blade will increase rapidly. This will quickly reach the safe cutting number of teeth of the circular saw blade, resulting in the circular saw blade not being able to maximize the inward feeding depth, which will affect the cutting efficiency. The angle α should also not be too large. If the angle α is too large, it will increase the rotation time of the rotary table 2, thereby reducing the cutting efficiency. When the rotary table 2 is rotated to cooperate with the next feed, the side of the circular saw blade 3 facing the rotation direction of the rotary table will continue to cut the ring forging, while the other side of the circular saw blade 3 facing away from the rotation direction of the rotary table will exit the cutting due to the gap T formed by the cutting groove formed earlier. This reduces the number of working teeth on the circular saw blade 3 participating in the cutting. (4) such as Figure 5As shown, the circular saw blade 3 continues to feed inward for cutting. When the circular saw blade 3 feeds to the set second depth S2, so that A = (0.8~1.2) × B, the circular saw blade stops feeding but continues to rotate. Then, in order to cooperate with the next feed, the angle α of the rotary table is controlled to rotate forward to reduce the number of working teeth on the circular saw blade participating in the cutting. A is rounded to the nearest integer. In this embodiment, the second depth S2 is 12mm, the corresponding number of working teeth A of the circular saw blade is 7, the number of safe cutting teeth B of the circular saw blade is 7, and when the circular saw blade 3 stops feeding, the angle α of the angle α of the rotary table 2 is controlled to rotate forward to cooperate with the next feed is 1~10 degrees. In this embodiment, the angle α is preferably 4 degrees. (5) Repeat the operation process of step (4) until the side wall of the ring forging 1 is cut through. During each step (4), whenever the circular saw blade 3 feeds to the set depth so that A = (0.8~1.2) × B, the circular saw blade 3 stops feeding but keeps rotating. Then, in order to cooperate with the next feed, the angle α of the forward rotation of the rotary table 2 is controlled. (6) When the circular saw blade 3 cuts through the side wall of the ring forging 1, the circular saw blade 3 stops feeding but continues to rotate, and then controls the rotary table 2 to rotate with the ring forging 1 until the upper and lower parts of the ring forging 1 are cut apart.

[0022] In practical work, the cutting depth of each feed of the circular saw blade 3 and the rotation angle α of the rotary table 2 to coordinate with the next feed are usually calculated in advance by the worker based on the diameter of the circular saw blade, the inner and outer diameters of the ring forging, and the safe number of cutting teeth of the circular saw blade. In this way, by setting the cutting depth of each feed of the circular saw blade and the rotation angle α of the rotary table 2 to coordinate with the next feed, on the one hand, a reliable, effective, and easy-to-obtain and detect control tool is provided for achieving high-efficiency automated cutting work; on the other hand, this feeding and cutting method, which combines the intermittent feeding of the circular saw blade with the intermittent rotation of the rotary table to coordinate with the next feed, can not only more conveniently and accurately ensure that the number of working teeth cut by the circular saw blade in each feed is as close as possible to the safe number of cutting teeth of the circular saw blade, greatly reducing the probability of damage to the circular saw blade due to overload fatigue, but also keep the circular saw blade in the best high-quality and high-efficiency cutting state, so that the cutting of the ring forging can be carried out safely, efficiently, and smoothly.

[0023] In this embodiment, the inward feed speed of the circular saw blade 3 during cutting is 1-10 mm / s. In this embodiment, the feed speed is preferably 3 mm / s. This feed speed should not be too fast, as it can easily damage the saw blade. In actual operation, when the circular saw blade 3 feeds inward, the rotary table 2 can be controlled to rotate slowly forward with the ring forging 1 at a set first linear speed. This eliminates the adverse effects on the cutting work caused by the assembly gap of the rotary table 2. The first linear speed is 0.1-0.5 mm / s. In this embodiment, the first linear speed is preferably 0.2 mm / s. Since the rotary table inevitably has an installation gap, the slow rotation of the rotary table 2 can eliminate the adverse effects caused by the assembly gap, making it less likely for the circular saw blade 3 to vibrate when cutting the ring forging. This further improves the cutting safety. Moreover, the extremely slow rotation of the rotary table 2 has negligible impact on the normal feed cutting operation of the circular saw blade. Each time the circular saw blade 3 stops feeding, the rotary table 2 is controlled to rotate at a set angle with a set second linear velocity in order to coordinate with the next feed. The second linear velocity is 1 to 5 mm / s. In this embodiment, the second linear velocity is preferably 3 mm / s. This setting can enable the rotary table 2 to rotate quickly to the set angle while ensuring safety, thereby improving cutting efficiency.

[0024] like Figure 1 , Figure 2 As shown, in this embodiment, the ring forging 1 is mounted on the rotary table 2 by a clamping device. The clamping device includes four clamping units evenly arranged along the circumferential direction on the rotary table 2. Each clamping unit includes a clamping seat 6, which can be locked onto the rotary table 2 by bolts and nuts that mate with T-shaped grooves on the rotary table 2. After the bolts are loosened, the clamping seat 6 can move along the T-shaped groove to adjust its radial position on the rotary table 2. Two clamping support mechanisms are arranged sequentially from bottom to top along the height direction on the clamping seat 6. At this time, the multi-in-one ring forging to be cut is a two-in-one ring forging 1. The two clamping support mechanisms can be respectively paired with the two easily deformable ring forgings to be cut in the two-in-one ring forging 1. The aforementioned clamping support mechanism includes: a slider that can slide radially along the rotary table 2, a tip disposed at the outer end of the slider, and a sliding drive mechanism that can drive the slider to slide radially; the slider in the lowest clamping support mechanism is mounted on the clamping seat 6 via a linear guide rail, and the sliders in each of the remaining clamping support mechanisms are mounted on the upper surface of the slider in the adjacent clamping support mechanism below them via linear guide rails; the sliding drive mechanism includes: a rotatable screw with a nut threaded onto the screw, the nut being fixedly connected to the slider; the screw in the lowest clamping support mechanism is mounted on the clamping seat 6 via a bearing, and the screws in each of the remaining clamping support mechanisms are mounted on the slider in the adjacent clamping support mechanism below them via bearings; In this embodiment, the two clamping support mechanisms are, from bottom to top, the first clamping support mechanism and the second clamping support mechanism; the two easily deformable ring forgings to be cut in the two-in-one ring forging 1 are the first easily deformable ring forging 16 and the second easily deformable ring forging 17, respectively; the first clamping support mechanism corresponds to the first easily deformable ring forging 16, and the second clamping support mechanism corresponds to the second easily deformable ring forging 17; The first clamping support mechanism includes: a first slider 7, a first center 8, a first screw 14, and a first nut; the first slider 7 is mounted on the clamping seat 6 via a linear guide rail; the first screw 14 is mounted on the clamping seat 6 via a bearing; after the first screw 14 is manually driven to rotate, the first nut can carry the first slider 7 to slide radially. The second clamping support mechanism includes: a second slider 9, a second center 10, a second screw 15, and a second nut; the second slider 9 is mounted on the upper surface of the first slider 7 via a linear guide rail; the second screw 15 is mounted on the first slider 7 via a bearing; after the second screw 15 is manually driven to rotate, the second nut can carry the second slider 9 to slide radially. After the two-in-one ring forging 1 is placed on the rotary table 2, the sliders in each clamping unit are driven radially outward by their respective sliding drive mechanisms. Each center point then clamps and supports the inner wall of the two-in-one ring forging 1 from the inside out, allowing it to be clamped and positioned on the rotary table 2. Furthermore, the first easily deformable ring forging 16 in the two-in-one ring forging 1 is clamped and supported by the first center points 8, and the second easily deformable ring forging 17 is clamped and supported by the second center points 10. This ensures that when the second easily deformable ring forging 17 is cut and separated, it is supported by the second center points 10 and will not fall and press against the saw blade. This ensures safe and smooth cutting operations, significantly reduces the probability of saw blade damage, and lowers cutting costs.

[0025] In order to enable the second tip 10 to more reliably support the cut-off second easily deformable ring forging 17, the second tip 10 is arranged inclined upward from the inside out. Furthermore, the second slider 9 is arranged inclined upward from the inside out, so that when the second slider 9 slides outward, it can drive the second tip 10 to move obliquely upward from the inside out, thereby enabling the second tip 10 to obliquely support the second easily deformable ring forging 17.

[0026] When the two-in-one ring forging 1 is clamped and positioned, the radial positions of each first center 8 can be measured by a ruler to ensure that they are all the same, so that the two-in-one ring forging 1 can be aligned with the rotary table 2 when it is clamped.

[0027] In actual production, the number of clamping support mechanisms on each clamping seat 6 is determined by the number of easily deformable ring forgings to be cut and separated in the multi-in-one ring forging. That is, the number of clamping support mechanisms on each clamping seat 6 is equal to the number of easily deformable ring forgings to be cut and separated in the multi-in-one ring forging. For example, if the multi-in-one ring forging to be cut is a three-in-one ring forging, compared to a two-in-one ring forging, the three-in-one ring forging has an additional third easily deformable ring forging. A third clamping support mechanism can be set on the clamping seat 6 above the second clamping support mechanism. The third clamping support mechanism corresponds to the third easily deformable ring forging. The third clamping support mechanism is not shown in the figure. The third clamping support mechanism includes: a third slider, a third center, a third screw, and a third nut. The third slider is mounted on the upper surface of the second slider 9 via a linear guide rail. The third screw is mounted on the second slider 9 via a bearing. After the third screw is manually driven to rotate, the third nut can carry the third slider to slide radially. As each third slider is driven to move outward, each third center can clamp and support the inner wall of the three-in-one ring forging, and the third easily deformable ring forging can be clamped and supported by each third center, so that when the third easily deformable ring forging on the three-in-one ring forging is cut and separated, it can be supported by the third center and will not fall and press down on the saw blade.

[0028] To ensure the third center can reliably support the cut-off, easily deformable ring forging, it is arranged at an upward angle from the inside out. Furthermore, the third slider is also arranged at an upward angle from the inside out, so that when the third slider slides outward, it drives the third center to move obliquely upward from the inside out, thus enabling the third center to obliquely support the easily deformable ring forging. In actual manufacturing, the upper surface of the first slider 7 in the bottom-level first clamping support mechanism is set as an upward-sloping surface from the inside out. This makes it easy to arrange the second slider 9, mounted on the upper surface of the first slider 7, and the third slider, mounted on the upper surface of the second slider 9, both in an upward-sloping configuration from the inside out. This also makes it easy for the second center 10 and the third center to be arranged in an upward-sloping configuration from the inside out. This arrangement is simple, stable, easy to install, and reliable in operation.

[0029] A centering mechanism is also provided; the structure of the centering mechanism includes: four support seats 11 evenly arranged along the circumference of the rotary table 2. Each support seat 11 can be locked onto the rotary table 2 by bolts and nuts that mate with T-shaped grooves on the rotary table 2. After the bolts are loosened, each support seat 11 can move along its respective T-shaped groove to adjust its radial position on the rotary table 2. A centering frame 12 and a reference platform 13 are fixed on each support seat 11. The reference platform 13 is located outside the centering frame 12. The centering frame 12 is arranged radially along the rotary table 2. The centering frame 12 is provided with a centering mechanism that extends from the inside out. The guide rods 18 are arranged to tilt downwards and the positioning guide rods 19 are arranged vertically. The guide rods 18 are located above the positioning guide rods 19, and the lower end of the guide rods 18 is connected to the upper end of the positioning guide rods 19. During the process of the multi-in-one ring forging being horizontally suspended on the reference platform 13 on the rotary worktable 2, each guide rod 18 can enter the lower end of the ring forging and can correct and center the multi-in-one ring forging. Then, each positioning guide rod 19 can position the multi-in-one ring forging so that the multi-in-one ring forging is coaxial with the rotary worktable 2. Each reference platform 13 is used to provide horizontal support for the multi-in-one ring forging.

[0030] To better clamp the support ring forging, the heads of each center are machined with knurled patterns to increase friction. The reference platform 13 includes a reference base, within which a floating support plate is installed to support the multi-piece ring forging. A spring is installed between the support plate and the reference base. When the multi-piece ring forging is placed on the support plate, the support plate moves downwards until it falls onto the reference base. During this process, the spring is compressed to cushion the fall of the multi-piece ring forging. This protects the multi-piece ring forging, the support base for the support ring forging, the rotary table, etc. In actual operation, the positions of the correction guide rods 18, positioning guide rods 19, support base 11, and reference platform can be pre-adjusted.

[0031] In this embodiment, the driving end of the first screw 14 faces outward, and the driving end of the first screw 14 protrudes from below the bottom of the multi-in-one ring forging placed on the reference table 13. With this setting, it is convenient for the worker to use a ruler to measure the radial position of the first tip 8 from the outside of the ring forging, and use a wrench to drive the first screw 14 to rotate to adjust the radial position of the first tip 8. Since the multi-in-one ring forging is blocked on the outside of the second screw 15, by setting the driving end of the second screw 15 to face the inside of the rotary table, it is convenient for the worker to drive the second screw 15 to rotate with a wrench.

Claims

1. A method for horizontally cutting ring forgings, characterized in that: The steps are as follows: (1) The ring forging is horizontally clamped on the rotary worktable with its axis vertical. The ring forging and the rotary worktable are coaxial. The circular saw blade is horizontally clamped on the gearbox with its axis vertical. The circular saw blade is driven to rotate by the motor on the gearbox. The gearbox is installed on the feed slide. Driven by the feed slide, the circular saw blade can feed along the radial direction of the rotary worktable toward the ring forging on the rotary worktable, so that the circular saw blade can horizontally cut the ring forging fixed on the rotary worktable. (2) Control the rotation of the circular saw blade and feed the ring forging under the drive of the feed slide; (3) As the circular saw blade feeds and cuts, the number of working teeth on the circular saw blade that participate in cutting the ring forging will gradually increase. The number of working teeth on the circular saw blade is set to A, and the number of safe cutting teeth on the circular saw blade is set to B. When the circular saw blade feeds and cuts to the set first depth, so that A = (0.8~1.2) × B, the circular saw blade stops feeding but continues to rotate. Then, in order to cooperate with the next feed, the angle of the rotary table is controlled to rotate forward to reduce the number of working teeth on the circular saw blade that participate in cutting. A is rounded to the nearest integer. (4) Then the circular saw blade continues to feed inward to cut. When the circular saw blade feeds to the set second depth so that A = (0.8~1.2) × B, the circular saw blade stops feeding but continues to rotate. Then, in order to cooperate with the next feed, the angle of the rotary table is controlled to rotate forward to reduce the number of working teeth on the circular saw blade participating in the cutting. A is rounded to the nearest integer. (5) Repeat the operation process of step (4) until the side wall of the ring forging is cut through. During each step (4), whenever the circular saw blade feeds to the set depth so that A = (0.8~1.2) × B, the circular saw blade stops feeding but keeps rotating. Then, the angle of the rotary table is controlled to rotate forward in order to cooperate with the next feed. (6) After the circular saw blade cuts through the side wall of the ring forging, the circular saw blade stops feeding but continues to rotate. Then, the rotary table is controlled to rotate with the ring forging until the upper and lower parts of the ring forging are cut apart.

2. The method for horizontal cutting of ring forgings according to claim 1, characterized in that: When the circular saw blade feeds inward, the rotary table is controlled to rotate slowly in the forward direction with the ring forging at a set first linear speed, thereby eliminating the adverse effects on the cutting work caused by the assembly gap of the rotary table. The first linear speed is 0.1 to 0.5 mm / s.

3. The method for horizontal cutting of ring forgings according to claim 1 or 2, characterized in that: In steps (3), (4), and (5), each time the circular saw blade stops feeding, the rotary table is controlled to rotate at a set second linear velocity to complete the set angle in order to coordinate with the next feed. The second linear velocity is 1 to 5 mm / s.

4. The method for horizontal cutting of ring forgings according to claim 1, characterized in that: The inward feed speed of the circular saw blade during cutting is 1 to 10 mm / s.

5. The method for horizontal cutting of ring forgings according to claim 1, characterized in that: In steps (3), (4), and (5), each time the circular saw blade stops feeding, the rotary table rotates forward by a set angle of 1 to 10 degrees.

6. The method for horizontal cutting of ring forgings according to claim 1, characterized in that: The ring forging is mounted on a rotary worktable using a clamping device. The clamping device includes several clamping units arranged circumferentially on the rotary worktable. Each clamping unit includes a clamping seat, which is locked to the rotary worktable by bolts and nuts that mate with T-shaped grooves on the worktable. After loosening the bolts, the clamping seat can move along its T-shaped groove to adjust its radial position on the rotary worktable. At least two clamping support mechanisms are sequentially arranged on the clamping seat from bottom to top along the height direction. Each clamping support mechanism corresponds one-to-one with each easily deformable ring forging to be cut in the multi-in-one ring forging. Each clamping support mechanism includes a slider that can slide radially along the rotary worktable, a center point located at the outer end of the slider, and a sliding drive mechanism that drives the slider to slide radially. The slider in the lowest clamping support mechanism is mounted on the clamping seat via a linear guide rail. The sliders in each of the other clamping support mechanisms are mounted on the clamping seat via linear guide rails. The rail is mounted on the upper surface of the slider in the adjacent clamping support mechanism below it; the sliding drive mechanism includes: a rotatable screw with a nut threaded onto it, the nut being fixedly connected to the slider; the screw in the lowest clamping support mechanism is mounted on the clamping seat via a bearing, and the screws in each of the remaining clamping support mechanisms are mounted on the sliders in the adjacent clamping support mechanisms below them via bearings; after the multi-in-one ring forging is placed on the rotary worktable, as the sliders in each clamping unit are driven by their respective sliding drive mechanisms to move radially outward, each tip can clamp and support the inner wall of the multi-in-one ring forging from the inside out, so that the multi-in-one ring forging can be clamped and positioned on the rotary worktable, and each easily deformable ring forging in the multi-in-one ring forging can be clamped and supported by the tip in its corresponding clamping support mechanism, so that when the easily deformable ring forgings on the multi-in-one ring forging are cut and separated, they can be supported by the corresponding tip and will not fall and press on the saw blade.

7. The method for horizontal cutting of ring forgings according to claim 6, characterized in that: The top points above the bottom clamping support mechanism are all arranged at an upward angle from the inside out, so that these top points can clamp and support the inner wall of the multi-in-one ring forging at an angle.

8. The method for horizontal cutting of ring forgings according to claim 6 or 7, characterized in that: Each slider above the bottom clamping support mechanism is arranged at an upward angle from the inside out, so that when these sliders slide outward, they can drive the top point on them to move obliquely upward from the inside out, thereby enabling the top point on these sliders to clamp and support the inner wall of the multi-in-one ring forging at an oblique upward angle.

9. The method for horizontal cutting of ring forgings according to claim 6, characterized in that: A centering mechanism is also provided; the structure of the centering mechanism includes: several support seats arranged circumferentially on the rotary worktable, each support seat being locked to the rotary worktable by bolts and nuts that mate with T-shaped grooves on the rotary worktable; after loosening the bolts, each support seat can move along its respective T-shaped groove to adjust its radial position on the rotary worktable; each support seat is fixed with a centering frame and a reference platform, the reference platform being located outside the centering frame; the centering frame is arranged radially along the rotary worktable; the centering frame is equipped with a centering mechanism that extends from the inside out. The guide rods are arranged at a downward angle and the positioning guide rods are arranged vertically. The guide rods are located above the positioning guide rods, and the lower end of the guide rods is connected to the upper end of the positioning guide rods. During the process of the multi-in-one ring forging being horizontally suspended on the reference platform of the rotary worktable, each guide rod can enter the lower end of the ring forging and can correct and center the multi-in-one ring forging. Then, each positioning guide rod can position the multi-in-one ring forging so that the multi-in-one ring forging is coaxial with the rotary worktable. Each reference platform is used to provide horizontal support for the multi-in-one ring forging.

10. The method for horizontal cutting of ring forgings according to claim 9, characterized in that: The reference platform structure includes: a reference base, in which a support plate that can float up and down is installed to support the multi-in-one ring forging, and a spring is installed between the support plate and the reference base. When the multi-in-one ring forging is placed on the support plate, the support plate will move down until it falls on the reference base, and the spring will be compressed to cushion the fall of the multi-in-one ring forging.

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