Support structure for machining of an elongated shaft

Abstract

The utility model belongs to the technical field of slender shaft processing, especially a support structure for slender shaft processing, including base, be equipped with at least two groups of support unit for bearing slender shaft on the base, the top of support unit is equipped with the pressing unit correspondingly, just the pressing unit is set up with the support unit dislocation, the top of support unit is equipped with V type support groove for adapting the outer circumferential surface of slender shaft, the bottom of pressing unit is equipped with V type pressure groove, still be equipped with the adjusting assembly for adjusting the support unit interval on the base, the driving assembly for driving it is close to or away from the support unit is connected to the pressing unit, in the utility model, through the V type support groove and V type pressure groove of dislocation setting, can adapt to the slender shaft of different diameter, ensure the stability of slender shaft in the processing process, avoid the problem that the support block and the pressing plate interfere and cannot clamp the slender shaft, the support unit interval is adjustable, adapts to the slender shaft of different length, need not to replace the support unit.

Description

Technical Field

[0001] This utility model belongs to the field of slender shaft machining technology, specifically relating to a support structure for slender shaft machining. Background Technology

[0002] In the machining of slender shafts, due to the large length-to-diameter ratio of the workpiece (usually >20) and poor rigidity, it is easily affected by cutting forces, gravity, thermal deformation, etc., resulting in bending, vibration or deformation. Therefore, a special support structure is required to improve its stability.

[0003] In the machining of slender shafts, such as cutting, the stability of the slender shaft determines the machining quality. Therefore, it is necessary to ensure that the support structure can stably fix the slender shaft.

[0004] However, traditional support structures have some significant problems: poor compatibility, mostly fixed-size designs that can only fit slender shafts of specific diameters, requiring the replacement of the entire support device for workpieces of different specifications, which is cumbersome and costly; and fixed support point spacing that cannot be flexibly adjusted according to the length of the slender shaft, which can easily cause the middle part to sag for ultra-long workpieces due to unreasonable support spacing.

[0005] To address the aforementioned problems, this application proposes a support structure for machining slender shafts. Utility Model Content

[0006] To address the aforementioned problems in the existing technology, this utility model provides a support structure for machining slender shafts, which solves the problems of poor versatility, inconvenient adjustment, and insufficient support stability in the existing technology, and achieves reliable support for slender shafts of different diameters and lengths, thereby improving machining quality.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a support structure for machining slender shafts, including a base, wherein at least two sets of support units for supporting slender shafts are provided on the base, and a clamping unit for pressing the slender shafts against the support units is provided above the support units, and the clamping unit is offset from the support units;

[0008] The support unit has a V-shaped support groove at its top for fitting the outer circumferential surface of the slender shaft, and the clamping unit has a V-shaped clamping groove at its bottom.

[0009] The base is also provided with an adjustment component for adjusting the spacing between the support units;

[0010] The clamping unit is connected to a drive assembly for moving it closer to or away from the support unit.

[0011] Preferably, the support unit includes:

[0012] An adjustable support base slidably connected to the base; and

[0013] A support block is detachably installed on the top of the adjustable support base, and the V-shaped support groove is provided on the top of the support block.

[0014] Preferably, the adjustable support base is provided with an installation groove for the support block to be embedded in, and a positioning groove is provided on the bottom surface of the installation groove, and a positioning protrusion adapted to the positioning groove is fixed at the bottom end of the support block; the adjustable support base is also provided with a threaded hole, and the support block is provided with a countersunk hole corresponding to the threaded hole.

[0015] Preferably, the clamping unit includes:

[0016] Mounting rack; and

[0017] A pressure plate fixed to the bottom surface of the mounting bracket, wherein the V-shaped pressure groove is provided at the bottom end of the pressure plate.

[0018] Preferably, the driving component includes:

[0019] A fixed base fixed to the adjustable support base;

[0020] Two symmetrically distributed perforated mounting ears are fixed to the top of the mounting base;

[0021] Rotate the rotating rod located between the two perforated mounting ears;

[0022] A second servo motor is used to drive the rotating rod to rotate, and the second servo motor is fixed to the mounting lug with holes;

[0023] A tilting frame fixed to the rotating rod;

[0024] An electric actuator that drives the mounting bracket toward or away from the tilting frame, the electric actuator being fixed to the tilting frame, and the piston rod of the electric actuator passing through the tilting frame and connected to the mounting bracket; and

[0025] A guide post is fixed to the mounting frame, and the guide post passes through the flipping frame.

[0026] Preferably, the inner walls of both the V-shaped support groove and the V-shaped pressure groove are fixed with rubber liners.

[0027] Preferably, the adjustment component includes:

[0028] Two fixing plates are symmetrically fixed to the top of the base;

[0029] Rotate the bidirectional threaded screw located between the two fixed plates, and the adjustable support seat is threadedly engaged with the bidirectional threaded screw.

[0030] A first servo motor for driving the bidirectional threaded screw to rotate, the first servo motor being fixed to the fixing plate; and

[0031] A guide rod is fixed between the two fixed plates, and the guide rod passes through the adjustable support.

[0032] Preferably, the support units are distributed in three groups at equal intervals, with the support unit in the middle fixed to the top of the base, and the support units on both sides moving towards or away from each other under the drive of the adjustment component.

[0033] Compared with the prior art, the beneficial effects of this utility model are:

[0034] In this invention, the staggered V-shaped support groove and V-shaped pressure groove can be adapted to slender shafts of different diameters, ensuring the stability of the slender shafts during processing and avoiding the problem of interference between the support block and the pressure plate, which prevents the slender shafts from being clamped; the spacing between the support units is adjustable to adapt to slender shafts of different lengths, without the need to replace the support units.

[0035] Other additional advantages and benefits of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0036] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0037] Figure 1 This is a schematic diagram of the structure of this utility model;

[0038] Figure 2 This is a schematic diagram of the isometric structure of the clamping unit in this utility model;

[0039] Figure 3 This utility model Figure 2 Enlarged structural diagram at point A in the diagram;

[0040] Figure 4 This is an exploded structural diagram of the support unit in this utility model.

[0041] In the diagram: 1. Base; 2. Support unit; 21. Adjustable support seat; 211. Mounting slot; 212. Threaded hole; 213. Positioning slot; 22. Support block; 221. V-shaped support groove; 222. Countersunk hole; 223. Positioning protrusion; 3. Adjustment assembly; 31. Fixing plate; 32. Bidirectional threaded screw; 33. First servo motor; 34. Guide rod; 4. Clamping unit; 41. Mounting bracket; 42. Pressure plate; 421. V-shaped pressure groove; 5. Drive assembly; 51. Fixing seat; 52. Mounting ear with hole; 53. Rotating rod; 54. Second servo motor; 55. Tilting frame; 56. Electric push rod; 57. Guide column; 6. Rubber liner. Detailed Implementation

[0042] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0043] Please see Figures 1-4 This utility model provides the following technical solution: a support structure for machining slender shafts, including a base 1, on which at least two sets of support units 2 for supporting slender shafts are provided. Above each support unit 2, a clamping unit 4 for pressing the slender shaft against the support unit 2 is provided, and the clamping unit 4 is offset from the support unit 2. The top of each support unit 2 is provided with a V-shaped support groove 221 for adapting to the outer circumference of the slender shaft, and the bottom of the clamping unit 4 is provided with a V-shaped pressing groove 421. The base 1 is also provided with an adjustment component 3 for adjusting the spacing between the support units 2. The clamping unit 4 is connected to a driving component 5 for driving it closer to or further away from the support unit 2. With the above solution, during use, the operator adjusts the spacing between the two sets of support units 2 according to the length of the slender shaft to be processed by adjusting the component 3 until the distance between the two sets of support units 2 matches the support requirements of the slender shaft, ensuring that the slender shaft can be stably supported after placement.

[0044] Subsequently, the slender shaft is placed in the V-shaped support groove 221 of the support unit 2. The design of the V-shaped support groove 221 can adapt to the outer circumference of slender shafts of different diameters. Through the contact between the inclined surfaces on both sides and the surface of the slender shaft, an automatic centering effect is formed, ensuring that the axis of the slender shaft is consistent with the reference axis of the processing equipment, and reducing processing errors caused by placement offset.

[0045] Next, the drive assembly 5 is activated, driving the clamping unit 4 to move closer to the support unit 2, so that the V-shaped groove 421 of the clamping unit 4 gradually approaches the upper surface of the slender shaft. Since the clamping unit 4 and the support unit 2 are offset, the V-shaped groove 421 can apply pressure from the non-support point position above the slender shaft, avoiding interference with the support unit 2. At the same time, the pressure is evenly transmitted through the two inclined surfaces of the V-shaped structure, firmly pressing the slender shaft into the V-shaped support groove 221, preventing axial movement or radial runout of the slender shaft during processing.

[0046] During the processing, when the processing equipment performs turning, grinding and other operations on the slender shaft, the two sets of support units 2 continuously provide bottom support for the slender shaft through the V-shaped support groove 221, which counteracts the radial force generated during processing and effectively suppresses the bending deformation caused by the insufficient rigidity of the slender shaft. The clamping unit 4 maintains a stable clamping force under the action of the drive component 5, ensuring that the slender shaft is fixed in both the axial and radial directions.

[0047] If the support position needs to be adjusted or a slender shaft of different specifications needs to be replaced during the processing, the clamping unit 4 can be driven away from the support unit 2 by the drive component 5 to release the clamping state on the slender shaft. After the slender shaft is removed, the spacing of the support unit 2 can be adjusted again by the adjustment component 3. The above operation can be repeated to complete a new round of clamping and fixing. The whole process is convenient to operate and can adapt to the processing needs of slender shafts of different lengths and diameters, significantly improving processing accuracy and stability.

[0048] Optionally, by Figure 1 and Figure 4 As shown, in this embodiment, the support unit 2 includes: an adjustable support base 21 slidably connected to the base 1 and a support block 22 detachably mounted on the top of the adjustable support base 21. A V-shaped support groove 221 is provided at the top of the support block 22. The adjustable support base 21 is provided with an installation groove 211 for the support block 22 to be inserted, and a positioning groove 213 is provided on the bottom surface of the installation groove 211. A positioning protrusion 223 that matches the positioning groove 213 is fixed at the bottom of the support block 22. The adjustable support base 21 is also provided with a threaded hole 212, and the support block 22 is provided with a threaded hole 212. With the above solution, the countersunk hole 222 corresponding to hole 212 requires the assembly of support block 22 and adjustable support base 21 to be completed first. The operator aligns positioning protrusion 223 with positioning groove 213 and inserts support block 22 into mounting groove 211 in the vertical direction. The precise cooperation between positioning protrusion 223 and positioning groove 213 can quickly achieve the initial positioning of support block 22 on adjustable support base 21, ensuring that the V-shaped support groove 221 of support block 22 is in the preset reference position, and avoiding positioning error of slender shaft caused by installation offset of support block 22.

[0049] After being embedded in place, the outer side of the support block 22 fits against the inner wall of the mounting groove 211, further restricting the lateral displacement of the support block 22. At this time, the countersunk hole 222 on the support block 22 is completely aligned with the threaded hole 212 on the adjustable support seat 21. The operator can pass the bolt through the countersunk hole 222 and screw it into the threaded hole 212. By tightening the bolt, the bottom surface of the support block 22 is tightly fitted against the inner bottom surface of the mounting groove 211, completing the detachable fixing of the support block 22 and the adjustable support seat 21. This also makes it convenient to replace different support blocks 22 or replace damaged support blocks 22 for different processing needs.

[0050] Optionally, by Figures 1-3 As shown, in this embodiment, the clamping unit 4 includes: a mounting frame 41 and a pressure plate 42 fixed to the bottom surface of the mounting frame 41. A V-shaped pressure groove 421 is provided at the bottom end of the pressure plate 42. The driving assembly 5 includes: a fixed base 51 fixed to the adjustable support base 21; two symmetrically distributed perforated mounting ears 52 fixed to the top of the fixed base 51; a rotating rod 53 rotatably disposed between the two perforated mounting ears 52; a second servo motor 54 for driving the rotating rod 53 to rotate; a flipping frame 55 fixed to the rotating rod 53; an electric push rod 56 for driving the mounting frame 41 to move closer to or away from the flipping frame 55; and a guide post 57 fixed to the mounting frame 41. The column 57 passes through the flip frame 55, the second servo motor 54 is fixed to the mounting lug 52 with holes, and the electric push rod 56 is fixed to the flip frame 55. The piston rod of the electric push rod 56 passes through the flip frame 55 and is connected to the mounting bracket 41. With the above scheme, when placing the slender shaft, the second servo motor 54 is started to drive the flip frame 55 to flip upward, so that the pressure plate 42 is away from the upper area of ​​the support unit 2, leaving enough space for the placement of the slender shaft and avoiding interference. When it is necessary to press the slender shaft, the second servo motor 54 is started again to drive the flip frame 55 to flip downward, so that the pressure plate 42 moves to the preset pressing position above the slender shaft.

[0051] After the tilting frame 55 is adjusted to a suitable angle, the electric push rod 56 is activated. The piston rod of the electric push rod 56 retracts, pulling the mounting frame 41 and causing the pressure plate 42 to move closer to the support unit 2. This causes the V-shaped pressure groove 421 to gradually contact the upper surface of the slender shaft. As the electric push rod 56 continues to apply force, the V-shaped pressure groove 421 will fit tightly against the slender shaft. Utilizing the characteristics of the V-shaped structure, pressure is applied evenly from both sides, firmly pressing the slender shaft into the V-shaped support groove 221 of the support unit 2.

[0052] After the slender shaft is processed, the piston rod of the electric push rod 56 extends, pushing the mounting bracket 41 to move the pressure plate 42 away from the support unit 2, releasing the pressure on the slender shaft. Subsequently, the second servo motor 54 drives the rotating rod 53 to rotate again, causing the flipping frame 55 to flip upward, so that the pressure plate 42 is completely removed from the upper area of ​​the slender shaft, making it convenient for the operator to take out the processed slender shaft or replace it with a new slender shaft to be processed.

[0053] In addition, the fixed seat 51 is fixed to the adjustable support seat 21. When the adjustment component 3 drives the adjustable support seat 21 to move to change the spacing of the support unit 2, the drive component 5 will move synchronously with the adjustable support seat 21 to ensure that the clamping unit 4 can always accurately clamp the slender shaft and adapt to the processing requirements of slender shafts of different lengths.

[0054] Preferably, by Figure 1 , Figure 2 and Figure 4 As shown in this embodiment, the inner walls of both the V-shaped support groove 221 and the V-shaped pressure groove 421 are fixed with rubber liners 6. With the above solution, the rubber liners 6 are soft and have a certain elasticity when in use. When the slender shaft is placed in the V-shaped support groove 221 or pressed by the V-shaped pressure groove 421, the rubber liners 6 can prevent the metal support block 22 and pressure plate 42 from directly contacting the surface of the slender shaft, thus avoiding wear and pressure marks caused by rigid clamping.

[0055] Optionally, by Figure 1 As shown, in this embodiment, the adjustment component 3 includes: two fixed plates 31 symmetrically fixed to the top of the base 1, a bidirectional threaded screw 32 rotatably disposed between the two fixed plates 31, a first servo motor 33 for driving the bidirectional threaded screw 32 to rotate, and a guide rod 34 fixed between the two fixed plates 31. The adjustable support 21 is threadedly engaged with the bidirectional threaded screw 32. The first servo motor 33 is fixed to the fixed plate 31, and the guide rod 34 passes through the adjustable support 21. With the above scheme, when it is necessary to adjust the spacing of the support unit 2, the first servo motor 33 is started, and its output shaft drives the bidirectional threaded screw 32 to rotate through the coupling. The bidirectional threaded screw 32 has two external threads with opposite directions of rotation, and they are threadedly engaged with the two adjustable support 21 respectively. Therefore, when the bidirectional threaded screw 32 rotates, it drives the two adjustable support 21 to move towards or in opposite directions through the thread action. The guide rod 34 is used to guide the adjustable support 21 to ensure that the adjustable support 21 moves only in a straight line.

[0056] Optionally, by Figure 1 As shown in this embodiment, the support units 2 are distributed in three groups at equal intervals. The support unit 2 located in the middle is fixed to the top of the base 1. The support units 2 located on both sides move towards or away from each other under the drive of the adjustment component 3. With the above scheme, when in use, the support unit 2 located in the middle is used to support the middle part of the slender shaft. Compared with two-point support, it can more evenly distribute the weight of the slender shaft itself and the load generated during processing, which greatly reduces the risk of bending deformation caused by the large span of the slender shaft. Especially for the processing of long slender shafts, it ensures the slender shaft is fixed and stable while avoiding its collapse due to gravity.

[0057] It should be noted that the first servo motor 33, the second servo motor 54, and the electric push rod 56 are all commercially available conventional devices with built-in power switches. Those skilled in the art can make conventional selections according to their needs. Their working principles are common knowledge known to those skilled in the art and have been fully disclosed in the prior art, so they will not be elaborated on further in this article.

[0058] The circuit connection involved in this utility model is a common method used by those skilled in the art, and technical inspiration can be obtained through a limited number of experiments. It belongs to the widely used prior art.

[0059] Components not described in detail in this article are existing technologies.

[0060] The working principle and usage process of this utility model: When using the support structure of this utility model, in the pre-processing preparation stage, the operator first adjusts the position of the support unit 2 according to the length of the slender shaft to be processed by adjusting component 3. Since there are three sets of support units 2 evenly distributed, the support unit 2 located in the middle is used to support the middle of the slender shaft, and the support units 2 on both sides move under the drive of adjusting component 3 to support the positions near the two ends of the slender shaft, providing a stable three-point support foundation for the slender shaft.

[0061] Then, the support block 22 is installed. The support block 22, which has a V-shaped support groove 221 that is adapted to the slender shaft to be processed, is quickly positioned by inserting the positioning protrusion 223 at the bottom into the positioning groove 213. Then, a bolt is passed through the countersunk hole 222 of the support block 22 and screwed into the threaded hole 212 of the adjustable support seat 21 to firmly fix the support block 22 and ensure that the position of the V-shaped support groove 221 is accurate.

[0062] Next, place the slender shaft and put it into the V-shaped support groove 221 of the three sets of support units 2. The rubber liner 6 of the V-shaped support groove 221 is in contact with the surface of the slender shaft.

[0063] Then, the drive assembly 5 is activated to fix the slender shaft. The second servo motor 54 drives the rotating rod 53 to rotate between the perforated mounting ears 52, causing the flipping frame 55 to flip and move the pressure plate 42 to a suitable position above the slender shaft. Then, the electric push rod 56 is activated to pull the mounting frame 41 and move the pressure plate 42 down. The V-shaped pressure groove 421 (with a rubber liner 6 on the inner wall) contacts the slender shaft from the misaligned direction and presses it onto the V-shaped support groove 221 to prevent the slender shaft from moving or jumping during processing.

[0064] After processing, the electric push rod 56 pushes the pressure plate 42 to move upward, releasing the clamping. The second servo motor 54 drives the flipping frame 55 to flip, so that the pressure plate 42 is away from the slender shaft, making it easier to remove the workpiece.

[0065] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A support structure for machining slender shafts, comprising a base (1), characterized in that: The base (1) is provided with at least two sets of support units (2) for supporting the slender shaft. Above the support unit (2) is a corresponding clamping unit (4) for pressing the slender shaft against the support unit (2), and the clamping unit (4) is offset from the support unit (2). The support unit (2) has a V-shaped support groove (221) at the top for adapting to the outer circumferential surface of the slender shaft, and the clamping unit (4) has a V-shaped clamping groove (421) at the bottom. The base (1) is also provided with an adjustment component (3) for adjusting the spacing of the support units (2); The clamping unit (4) is connected to a drive assembly (5) for driving it closer to or further away from the support unit (2).

2. The support structure for machining slender shafts according to claim 1, characterized in that: The support unit (2) includes: An adjustable support (21) slidably connected to the base (1); and A support block (22) is detachably installed on the top of the adjustable support base (21), and the V-shaped support groove (221) is provided on the top of the support block (22).

3. The support structure for machining slender shafts according to claim 2, characterized in that: The adjustable support base (21) is provided with a mounting groove (211) for the support block (22) to be embedded in, and a positioning groove (213) is provided on the bottom surface of the mounting groove (211). A positioning protrusion (223) that is adapted to the positioning groove (213) is fixed at the bottom end of the support block (22). The adjustable support base (21) is also provided with a threaded hole (212), and the support block (22) is provided with a countersunk hole (222) corresponding to the threaded hole (212).

4. The support structure for machining slender shafts according to claim 2, characterized in that: The clamping unit (4) includes: Mounting bracket (41); and The pressure plate (42) is fixed to the bottom surface of the mounting bracket (41), and the V-shaped pressure groove (421) is provided at the bottom end of the pressure plate (42).

5. The support structure for machining slender shafts according to claim 4, characterized in that: The driving component (5) includes: Fixed base (51) fixed to the adjustable support base (21); Two symmetrically distributed perforated mounting ears (52) are fixed to the top of the fixing base (51); Rotate the rotating rod (53) located between the two perforated mounting ears (52); A second servo motor (54) for driving the rotating rod (53) to rotate, the second servo motor (54) being fixed to the mounting ear with holes (52); A tilting frame (55) fixed to the rotating rod (53); An electric push rod (56) that drives the mounting bracket (41) closer to or away from the tilting bracket (55), the electric push rod (56) being fixed to the tilting bracket (55), and the piston rod of the electric push rod (56) passing through the tilting bracket (55) and connected to the mounting bracket (41); and A guide post (57) is fixed to the mounting bracket (41), and the guide post (57) passes through the flipping frame (55).

6. The support structure for machining slender shafts according to claim 1, characterized in that: The inner walls of both the V-shaped support groove (221) and the V-shaped pressure groove (421) are fixed with rubber liners (6).

7. The support structure for machining slender shafts according to claim 2, characterized in that: The adjustment component (3) includes: Two fixing plates (31) are symmetrically fixed to the top of the base (1); Rotate the bidirectional threaded screw (32) located between the two fixed plates (31), and the adjustable support (21) is threadedly engaged with the bidirectional threaded screw (32); A first servo motor (33) for driving the rotation of the bidirectional threaded screw (32), the first servo motor (33) being fixed to the fixing plate (31); and A guide rod (34) is fixed between the two fixed plates (31) and passes through the adjustable support base (21).

8. The support structure for machining slender shafts according to claim 1, characterized in that: The support units (2) are distributed in three groups at equal intervals. The support unit (2) located in the middle is fixed to the top of the base (1), and the support units (2) located on both sides move towards each other or in opposite directions under the drive of the adjustment component (3).

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