A support for processing a rotating shaft

Abstract

The utility model provides a kind of support for pivot processing, including mounting plate, the upper end of mounting plate is provided with multiple cavity frames, the inside of multiple cavity frames is slidably provided with hollow frame, the upper end between multiple hollow frames is provided with a cavity plate, the inside of hollow plate is slidably provided with multiple mobile supports, the inside of cavity plate is provided with synchronous mechanism of driving mobile support synchronous approach each other. By the support for pivot processing described in the utility model, the rollers on multiple mobile supports can be controlled to approach each other synchronously, which not only supports and processes pivots of different diameters, but also rotates the pivot using the rollers. This not only protects the surface of the pivot, but also avoids scratches or indentations on the pivot.

Description

Technical Field

[0001] This utility model belongs to the field of rotating shaft processing technology, and specifically relates to a bracket for rotating shaft processing. Background Technology

[0002] A spindle support is an auxiliary device used to support and position long shaft workpieces (such as spindles) during machining. It is usually installed on the bed of a CNC lathe, cylindrical grinder, or machining center, between the spindle and the tailstock. When the spindle is long and lacks rigidity, the support can provide intermediate support to prevent the workpiece from bending, vibrating, or deforming due to cutting forces during machining, thereby ensuring machining accuracy (such as roundness, coaxiality, and surface finish) and machining safety.

[0003] Existing shaft machining brackets clamp and fix the shaft by driving two arc-shaped plates to approach each other, ensuring stable support during shaft machining. However, due to the fixed shape and size of the arc-shaped plates, they can only clamp and fix shafts of a specific diameter. Once a workpiece of a different diameter is changed, the arc-shaped plates must be replaced or adjusted (by removing and installing bolts with tools), resulting in long changeover times and low efficiency. Furthermore, the direct pressing of the metal arc-shaped plates onto the shaft can cause surface indentations, which has a significant impact on precision-machined surfaces or shafts made of soft materials. Utility Model Content

[0004] In view of this, this utility model addresses the shortcomings of the prior art by providing a support for shaft processing. By controlling the rollers on multiple movable supports to move towards each other synchronously, it can not only support and process shafts of different diameters, but also use the rollers to rotate and process the shaft, thus protecting the surface of the shaft and preventing scratches or indentations.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a bracket for shaft processing, including a mounting plate, with multiple hollow frames provided at the upper end of the mounting plate. The mounting plate and the hollow frames are fixed together by welding. Hollow frames are slidably arranged inside each of the multiple hollow frames. A hollow plate is provided between the upper ends of the multiple hollow frames. Multiple movable supports are slidably arranged inside the hollow plate. A synchronization mechanism is provided inside the hollow plate to drive the movable supports to move towards each other synchronously. The synchronization mechanism includes arc-shaped guide rails arranged on the left and right sides of the inner wall of the mounting plate. A rotatable mechanism is provided between the two arc-shaped guide rails. An external gear ring is provided, which is coaxial with the arc guide rail. Multiple rotating seats are provided on the inner arc surface of the external gear ring. Each rotating seat has a connecting rod rotatably installed inside. The multiple connecting rods are rotatably connected to the interior of the adjacent movable bracket. A gear is rotatably installed on the rear side of the cavity plate through a rotating column. The gear meshes with the external gear ring. A second drive unit for driving the gear is provided on the right side of the cavity plate. The second drive unit includes a second motor located on the right side of the cavity plate. The output shaft of the second motor is connected to the right end of the rotating column through a coupling. Rollers are rotatably installed inside the movable bracket.

[0006] As a further improvement of this utility model, the mounting plate has multiple mounting holes inside, with four mounting holes located at the four corners of the mounting plate.

[0007] As a further improvement of this utility model, a lead screw is rotatably installed inside the cavity frame. The lead screw is a single screw located inside the cavity frame in the middle. The lead screw is rotatably connected to the interior of the adjacent hollow frame. A drive unit is provided at the lower end of the mounting plate to drive the lead screw to rotate. The drive unit includes a motor located at the lower end of the mounting plate. The output shaft of the motor is connected to the lower end of the lead screw through a coupling.

[0008] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0009] Firstly, by controlling the start of the motor, the hollow frame is driven to move the movable bracket inside the cavity plate up and down under the constraint of the cavity frame. This ensures that the clamping center formed by multiple movable brackets is concentric with the center point of the lathe's three-jaw chuck, allowing for quick adaptation to the use of lathe three-jaw chucks of different heights.

[0010] Secondly, by controlling the start of motor two, the output shaft drives the gear to rotate, which in turn drives the external gear ring to rotate clockwise under the constraint of the arc-shaped guide rail. At this time, the rotating seat moves and expands through the rotation of the connecting rod, causing the moving brackets to move closer together so that the rollers contact the outer arc surface of the rotating shaft. Then, by controlling the start of lathe operation, the three-jaw chuck drives the rotating shaft to rotate, and with the support of the bracket, the rollers on multiple moving brackets can be controlled to move closer together synchronously. This not only supports and processes rotating shafts of different diameters, but also allows the rotating shaft to be rotated using the rollers, protecting the surface of the rotating shaft and preventing scratches or indentations.

[0011] Thirdly, by inserting bolts through the inside of the mounting hole and fixing the mounting plate to the lathe table, it is easy for personnel to quickly fix the bracket on the spindle machining lathe. Attached Figure Description

[0012] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0013] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a cross-sectional structural diagram of the present invention; Figure 3 This is a schematic diagram of the right-side cross-sectional structure of the present invention; Figure 4 This is a front sectional view of the present invention.

[0014] In the diagram: 101, mounting plate; 102, mounting hole; 201, hollow frame; 202, motor one; 203, hollow plate; 204, hollow frame; 205, lead screw; 301, moving bracket; 302, roller; 303, arc-shaped guide rail; 304, rotating seat; 305, gear; 306, external gear ring; 307, connecting rod; 308, motor two. Detailed Implementation

[0015] To better understand this utility model, the following embodiments further illustrate its content, but the scope of protection of this utility model is not limited to the embodiments described below. Numerous specific details are set forth in the following description to provide a more thorough understanding of this utility model. However, it will be apparent to those skilled in the art that this utility model can be practiced without one or more of these details.

[0016] like Figure 1 , 2As shown in Figures 3 and 4, a support for machining a rotating shaft includes a mounting plate 101. Multiple hollow frames 201 are disposed on the upper end of the mounting plate 101. Hollow frames 204 are slidably disposed inside each of the multiple hollow frames 201. A hollow plate 203 is disposed between the upper ends of the multiple hollow frames 204. Multiple movable supports 301 are slidably disposed inside the hollow plate. A synchronization mechanism is disposed inside the hollow plate 203 to drive the movable supports 301 to move towards each other synchronously. A lead screw 205 is rotatably disposed inside each of the hollow frames 201. The lead screw 205 is located inside a hollow frame 201 in the middle. The lead screw 205 is rotatably connected to the interior of the adjacent hollow frame 204. A drive unit is provided at the lower end of the mounting plate 101 to drive the lead screw 205 to rotate. The drive unit includes a motor 202 located at the lower end of the mounting plate 101. The output shaft of the motor 202 is connected to the lower end of the lead screw 205 through a coupling. Multiple mounting holes 102 are provided inside the mounting plate 101. The multiple mounting holes 102 are located at the four corners of the mounting plate 101.

[0017] First, the bolt is inserted through the inside of the mounting hole 102 and the mounting plate 101 is fixed on the lathe table. Then, the motor 202 is turned on by control, and the output shaft drives the lead screw 205 to rotate, which in turn drives the hollow frame 204 to move the movable bracket 301 inside the cavity plate 203 up and down under the constraint inside the cavity frame 201, ensuring that the clamping center formed by multiple movable brackets 301 is concentric with the center point of the lathe three-jaw chuck.

[0018] like Figure 2 , 3 As shown, the synchronization mechanism includes arc-shaped guide rails 303 on the left and right sides of the inner wall of the mounting plate 101. An external gear ring 306 is rotatably arranged between the two arc-shaped guide rails 303. Multiple rotating seats 304 are arranged on the inner arc surface of the external gear ring 306. A connecting rod 307 is rotatably arranged inside each rotating seat 304. The multiple connecting rods 307 are rotatably connected to the interior of the adjacent movable bracket 301. A gear 305 is rotatably arranged on the rear side of the cavity plate 203 through a rotating column. The gear 305 is meshed with the external gear ring 306. A second drive unit for driving the gear 305 is arranged on the right side of the cavity plate 203. The second drive unit includes a second motor 308 arranged on the right side of the cavity plate 203. The output shaft of the second motor 308 is connected to the right end of the rotating column through a coupling. Rollers 302 are rotatably arranged inside the movable bracket 301.

[0019] Then, the rotating shaft is placed inside the cavity plate 203 and positioned between the three moving parts. The left end of the rotating shaft is then fixed in the three-jaw chuck of the lathe. Next, the motor 308 is turned on by control, and the output shaft drives the gear 305 to rotate, which in turn drives the external gear ring 306 to rotate clockwise under the constraint of the arc guide rail 303. At this time, the rotating seat 304 moves and expands through the rotation of the connecting rod 307, causing the moving bracket 301 to move closer to each other.

[0020] According to another embodiment of the present invention, such as Figure 1 , 2 As shown in Figure 3, rollers 302 are rotatably installed inside the movable brackets 301. By moving the movable brackets 301 towards each other, the rollers 302 come into contact with the outer arc surface of the rotating shaft, thereby clamping and fixing the rotating shaft. Then, by controlling the lathe to start running, the three-jaw chuck drives the rotating shaft to rotate, and with the support of the bracket, it prevents the workpiece from bending, vibrating or deforming due to cutting force during the processing, thereby ensuring the processing accuracy.

[0021] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Any other modifications or equivalent substitutions made by those skilled in the art to the technical solution of this utility model, as long as they do not depart from the spirit and scope of the technical solution of this utility model, should be covered within the scope of the claims of this utility model.

Claims

1. A bracket for machining a rotating shaft, comprising a mounting plate (101), characterized in that: The upper end of the mounting plate (101) is provided with multiple cavity frames (201), and hollow frames (204) are slidably arranged inside each cavity frame (201). A cavity plate (203) is provided between the upper ends of the multiple hollow frames (204), and multiple movable supports (301) are slidably arranged inside the hollow plate. The cavity plate (203) is provided with a synchronization mechanism that drives the movable supports (301) to move towards each other synchronously. The synchronization mechanism includes arc-shaped guide rails (303) arranged on the left and right sides of the inner wall of the mounting plate (101), and the inner sides of the two arc-shaped guide rails (303) are... An external gear ring (306) is rotatably arranged between the parts. Multiple rotating seats (304) are arranged on the inner arc surface of the external gear ring (306). A connecting rod (307) is rotatably arranged inside each rotating seat (304). The multiple connecting rods (307) are rotatably connected to the interior of the adjacent movable bracket (301). A gear (305) is rotatably arranged on the rear side of the cavity plate (203) through a rotating column. The gear (305) meshes with the external gear ring (306). A second drive unit for driving the gear (305) to rotate is arranged on the right side of the cavity plate (203).

2. The bracket for machining a rotating shaft as described in claim 1, characterized in that: The cavity frame (201) is rotatably equipped with a lead screw (205). The lead screw (205) is a single unit located inside the cavity frame (201) in the middle. The lead screw (205) is rotatably connected to the interior of the adjacent hollow frame (204). The lower end of the mounting plate (101) is provided with a drive unit for driving the lead screw (205) to rotate.

3. The bracket for machining a rotating shaft as described in claim 2, characterized in that: The drive unit includes a motor (202) located at the lower end of the mounting plate (101), and the output shaft of the motor (202) is connected to the lower end of the lead screw (205) via a coupling.

4. The bracket for machining a rotating shaft as described in claim 1, characterized in that: The second drive unit includes a second motor (308) located on the right side of the cavity plate (203), and the output shaft of the second motor (308) is connected to the right end of the rotating column through a coupling.

5. The bracket for machining a rotating shaft as described in claim 1, characterized in that: Each of the movable supports (301) is equipped with rotatable rollers (302).

6. The bracket for machining a rotating shaft as described in claim 1, characterized in that: The mounting plate (101) has multiple mounting holes (102) inside, and the multiple mounting holes (102) are located at the four corners of the mounting plate (101).

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