Simple adjustable anti-vibration support device for processing of elongated shaft

Abstract

The utility model relates to numerical control processing equipment technical field relates to a simple and easy adjustable type slender axle processing shock -proof support device. Including base, adjusting bolt, sliding block, movable support, long locking screw, short locking screw, upper cover, guide post, the adjustment of the height of the support surface. In the part clamping through the method of dialing alignment, the center difference between the part and V, upper cover is detected, reaches the purpose of height adjustment. Adapt to the adjustment demand of different machine tool, different diameter workpiece and processing position.

Description

Technical Field

[0001] This utility model relates to the field of CNC machining equipment technology, and to a simple adjustable anti-vibration support device for machining slender shafts. Background Technology

[0002] When machining slender shaft parts on a four-axis machining center, the excessive overhang of the part leads to insufficient clamping rigidity, easily causing machining vibration. During the cutting process, the radial cutting force causes the slender shaft to exhibit a "tool deflection" phenomenon, where the shaft body bends away from the tool direction under the action of the cutting force. To solve this problem, auxiliary support is needed during part machining. However, when milling slender shaft parts on a four-axis machining center, the shaft body often needs to rotate at high speed along the spindle direction, so traditional clamping and locking fixtures cannot be used. At the same time, the magnitude of the clamping force will lead to mechanical constraint and stress superposition, inhibiting the release of residual stress.

[0003] When milling slender shaft parts on a four-axis machining center, there are often requirements for high-precision geometric tolerances between various structures. Therefore, the rotation center of the auxiliary support needs to be matched with the rotation center of the part's shaft. That is, the auxiliary support fixture cannot be a structure with a fixed height. Otherwise, the mismatch between the rotation center of the part and the fixture will aggravate the "tool deflection" phenomenon, resulting in the cutting deformation of the part.

[0004] To solve the above problems, a novel auxiliary support tooling is needed to ensure that it has the following functions: ① Ensure that the auxiliary support surface does not affect the high-speed rotation of the parts along the main shaft.

[0005] ② Ensure that the clamping force of the auxiliary support fixture is moderate to achieve balanced clamping force and release of residual stress.

[0006] ③ Ensure that the center height of the auxiliary support fixture is adjusted according to the center height of the part. Utility Model Content

[0007] Utility Model Purpose A height-adjustable and rigid anti-vibration support device is provided to adapt to the adjustment needs of different machine tools, workpieces of different diameters, and processing positions.

[0008] Technical solution A simple adjustable anti-vibration support device for machining slender shafts includes a base 1, an adjusting bolt 2, a slider 3, a movable support 4, a long locking screw 5, a short locking screw 6, a top cover 7, and guide posts 8. The base 1 has two symmetrical holes. The lengths of the four guide posts 8 are respectively interference-fitted with the holes, and the remaining lengths of the guide posts 8 are clearance-fitted with the movable support 4. The movable support 4 can move up and down along the guide posts 8. The base 1 has a sliding groove. The adjusting bolt 2 passes through a threaded hole in the base 1 and is screwed to the slider 3. Rotating the adjusting bolt 2 adjusts the horizontal position of the slider 3. The length of the slider 3 is less than the length of the sliding groove. The movable support 4 and the slider 3 have a contact surface that is adapted to each other and has a certain angle. The movement of the slider 3 causes the movable support 4 to move up and down. The working end face of the movable support 4 has a V-shaped structure for supporting slender shaft parts and is secured by the top cover 7 and short locking screws 6.

[0009] Furthermore, the guide post is made of GCr15 bearing steel.

[0010] Furthermore, there are two adjusting bolts 2, which are respectively set on both sides of the base 1.

[0011] Furthermore, the oblique angle is specifically 5~10°.

[0012] Furthermore, the active support 4 is made of cast iron.

[0013] Furthermore, the angle of the V-shaped structure is 90°.

[0014] Furthermore, the bottom of the V-shaped structure is provided with a clearance groove, which solves the assembly problem between the outer circle of the part and the V-shaped structure by reserving space, thus avoiding interference.

[0015] Furthermore, the top cover 7 is made of polytetrafluoroethylene.

[0016] Furthermore, the working surface of the upper cover 7 is adapted to the rotation diameter of the slender shaft.

[0017] The beneficial effects of this application are as follows: The above-mentioned utility model provides a height-adjustable and rigid anti-vibration support device to adapt to the adjustment needs of different machine tools, workpieces of different diameters and processing positions.

[0018] ① The auxiliary support surface of this auxiliary tooling consists of two parts, the lower one being the movable support 4. The V-groove has a semi-circular hole in the upper cover 7. The V-groove provides support at two points, and the upper cover uses the semi-circular hole for clamping, requiring a clearance fit between the semi-circular hole and the outer diameter of the part's rotation. These two support surfaces provide auxiliary support for shaft-like parts, meaning the support surface uses a two-point, one-surface wrapping method, which does not affect the axial rotation of the part during machining.

[0019] ② The material used for the active support 4 is polytetrafluoroethylene (PTFE). The elastic deformation of PTFE will... It absorbs some of the residual stress, which can alleviate the deformation of parts caused by the release of residual stress to a certain extent.

[0020] ③ This auxiliary tooling can achieve support through the sliding between slider 3 and movable support 4. Adjusting the height of the support surface. During part clamping, a dial indicator is used to check the center difference between the part and the V-shaped support and the top cover, thus achieving height adjustment. Attached Figure Description

[0021] Figure 1 Front view of a simple adjustable slender shaft machining anti-vibration support device; Figure 2 This is a side view; Figure 3 This is a top view; Figure 4 for Figure 1 AA section view; Figure 5 This is a three-dimensional view of the support device.

[0022] The components include: 1. base, 2. adjusting bolt, 3. slider, 4. movable support, 5. long locking screw, 6. short locking screw, 7. top cover, and 8. guide post. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions in the embodiments of this utility model will be described in more detail below with reference to the embodiments of this utility model. In the examples, the same or similar reference numerals denote the same or similar components or elements having the same or similar functions throughout. The described embodiments are some, but not all, embodiments of this utility model. The embodiments described below with reference to the embodiments are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model. The embodiments of this utility model will be described in detail below with reference to their specific implementation.

[0024] The core utility model provides a height-adjustable anti-vibration support device that adapts to different machine tools, workpieces of different diameters, and processing positions. It mainly consists of a base, movable support, slider, guide column, top cover, locking screws, and adjusting bolts. Its core feature is the precise control of the support height achieved through a bidirectional inclined adjustment mechanism.

[0025] Secondary utility model point 1: The base is installed on the machine tool worktable, and the movable support is coordinated with the four guide columns, so that the movable support can slide up and down; Secondary utility model point 2: The base is provided with a sliding groove to cooperate with the slider, and the base is provided with a Φ5.2 hole, and the slider is controlled to move left and right using an M5 adjusting bolt; Secondary utility model point 3: The top surface of the slider has a 5~10° slope, which cooperates with the bottom surface of the movable support to convert the left and right movement of the slider into the up and down movement of the movable support; Secondary utility model point 4: The movable support uses a 90° V-shaped structure to install parts; Secondary utility model point 5: The movable support and the base are fixed by long locking screws; Secondary utility model point 6: The upper cover is connected to the movable support by a short locking screw; Secondary utility model point 7: The top cover is made of polytetrafluoroethylene material, which has a certain degree of elasticity and applicability, and can press down parts of different diameters.

[0026] The base is mounted on the machine tool worktable, mates with it via a 14mm keyway, and is bolted to the worktable. The base is made of cast iron, with four holes on the upper part for interference fit with four guide posts. The guide posts and movable supports have a clearance fit, with a clearance less than 0.01mm, allowing the movable supports to slide up and down along the guide posts. The guide posts are made of GCr15 bearing steel with a surface roughness requirement of Ra0.2. The base is equipped with a sliding groove to cooperate with the slider. The base is provided with Φ5.2 holes on the left and right sides, and the slider is provided with M5 threaded holes on the left and right sides. Two M5 adjusting bolts are used to control the left and right movement of the slider. The top surface of the slider has a 5-10° slope, which cooperates with the bottom surface of the movable support to convert the left and right movement of the slider into the up and down movement of the movable support. The movable support material is cast iron, with a 5-10° slope at the bottom to cooperate with the slider; the upper part uses a 90° V-shaped structure to clamp the parts. The movable support and base are secured by two long locking screws; The top cover is made of polytetrafluoroethylene, which has a certain degree of elasticity and applicability, and can compress parts of different diameters.

[0027] The top cover is connected to the movable support using two short locking screws.

[0028] Working principle: The core utility model of this auxiliary tooling is its height adjustment function, which will be explained in detail below.

[0029] 1. Structural relationships: a. Two adjusting bolts 2 connect the base 1 and the slider 3 simultaneously, and all three are connected by threads. The threaded connection between the adjusting bolts 2 and the slider 3 is a threaded fastening connection, meaning there is no relative movement between the adjusting bolts 2 and the slider 3. The adjusting bolts 2 and the base 1 are connected by a threaded sliding connection.

[0030] b. The movable support 4 and the base 1 are connected by a guide column 8.

[0031] 2. The relationship of movement between components during height adjustment a. The adjusting bolt 2 and the slider 3 are locked together by threads and can be regarded as a unified whole. There is no relative movement between the adjusting bolt 2 and the slider 3.

[0032] b. Adjust the position of the slider in the base groove by adjusting the threaded connection between the adjusting bolt and the base. When the right adjusting bolt is unscrewed, the left adjusting bolt is screwed in, at which point the adjusting bolt pushes the slider to move in the base groove. Because the thread connects both base 1 and slider 3, the axial and radial positions of the slider in the base can be controlled, achieving precise height adjustment.

[0033] Furthermore, unless otherwise defined, the technical or scientific terms used in this application description shall have the ordinary meaning understood by one of ordinary skill in the art to which this application pertains. The terms "upper," "lower," "left," "right," "center," "vertical," "horizontal," "inner," and "outer," etc., used in this application description to indicate relative direction or positional relationship are used only to indicate relative orientation or positional relationship, and do not imply that the device or component must have a specific orientation, or be constructed and operated in a specific orientation. When the absolute position of the described object changes, its relative positional relationship may also change accordingly, and therefore should not be construed as a limitation on this application. The terms "first," "second," "third," and similar terms used in this application description are used only for descriptive purposes to distinguish different components, and should not be construed as indicating or implying relative importance. The terms "a," "one," or "the," etc., used in this application description should not be construed as an absolute limitation on quantity, but should be construed as indicating the existence of at least one. The terms "including," "comprising," etc., used in this application description mean that the element or object preceding the word covers the element or object listed after the word and its equivalents, without excluding other elements or objects.

[0034] Furthermore, it should be noted that, unless otherwise explicitly specified and limited, terms such as “installation,” “connection,” and “linkage” used in the description of this application should be interpreted broadly. For example, a connection can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; or it can be a connection within two components. Those skilled in the art can understand its specific meaning in this application according to the specific circumstances.

[0035] The above description is merely a specific embodiment of this utility model and is not intended to limit this utility model. Within the spirit and principles of this utility model, any person skilled in the art may use the above-disclosed technical content to make changes or modifications to equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of this utility model without departing from the technical solution of this utility model, as well as any modifications, equivalent substitutions, improvements, etc., should be included within the protection scope of this utility model.

Claims

1. A simple adjustable anti-vibration support device for machining slender shafts, characterized in that, The system includes a base, adjusting bolts, a slider, a movable support, long locking screws, short locking screws, a top cover, and guide posts. The base has two symmetrical holes, and the lengths of the four guide posts are respectively interference-fitted with the holes. The remaining lengths of the guide posts are clearance-fitted with the movable support, allowing the movable support to move up and down along the guide posts. The base has a sliding groove, and the adjusting bolt passes through a threaded hole in the base and is screwed onto the slider. Rotating the adjusting bolt adjusts the horizontal position of the slider. The length of the slider is less than the length of the sliding groove. The movable support's contact surface with the slider is adapted and has a certain angle. As the slider moves, it causes the movable support to move up and down. The working end face of the movable support has a V-shaped structure for supporting slender shaft-like parts and is secured with a top cover using short locking screws.

2. The apparatus as claimed in claim 1, characterized in that, The guide post is made of GCr15 bearing steel.

3. The apparatus as described in claim 1, characterized in that, There are two adjusting bolts, which are respectively located on both sides of the base.

4. The apparatus as claimed in claim 1, characterized in that, The oblique angle is specifically 5~10°.

5. The apparatus as claimed in claim 1, characterized in that, The movable support is made of cast iron.

6. The apparatus as claimed in claim 1, characterized in that, The angle of the V-shaped structure is 90°.

7. The apparatus as claimed in claim 6, characterized in that, The bottom of the V-shaped structure is provided with a clearance groove.

8. The apparatus as claimed in claim 1, characterized in that, The top cover is made of polytetrafluoroethylene.

9. The apparatus as claimed in claim 8, characterized in that, The working surface of the upper cover is adapted to the rotation diameter of the slender shaft.

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