A clamping mechanism for an external cylindrical grinding machine

Abstract

This utility model discloses a clamping mechanism for an external cylindrical grinding machine, including a base plate with a bracket fixedly installed at the bottom. When the external cylindrical grinding machine is in use, the workpiece needs to be clamped. The base plate, bracket, and limiting ring are installed on the grinding machine. At this time, the workpiece is placed on the side of the turntable away from the cylinder. The cylinder is started, which pushes the push plate away from the turntable. Since the end of the connecting plate is hinged to the slider and the push plate respectively, under its restriction, the push plate pulls the slider through the connecting plate, causing the slider to slide inside the slide groove. The six moving plates move in a converging motion. The moving plates drive the screw and the clamping block to move, so that the converging clamping block clamps the outer wall of the workpiece. When the outer wall of the workpiece is irregularly shaped, the screw is rotated. Since the screw is threaded inside the moving plate and the clamping block is rotatably connected to the end of the screw, under its restriction, the screw pushes the clamping block. The six independently moving clamping blocks can adjust the clamping according to the shape of the workpiece.

Description

Technical Field

[0001] This utility model relates to the field of cylindrical grinding machine technology, specifically to a clamping mechanism for a cylindrical grinding machine. Background Technology

[0002] An external cylindrical grinding machine is a high-precision machine tool used to machine the outer cylindrical surface of cylindrical workpieces. It removes irregularities and impurities from the workpiece surface through the relative motion between a high-speed rotating grinding wheel and the workpiece, resulting in a high-precision and high-quality outer cylindrical surface. The clamping mechanism of an external cylindrical grinding machine refers to the device used to fix and position the workpiece, typically including a dial, tailstock, and clamping components. The main function of the clamping mechanism is to ensure the workpiece remains stable during the grinding process in order to obtain accurate machining dimensions and surface finish.

[0003] For example, the clamping mechanism of an external cylindrical grinding machine disclosed in Chinese Patent CN219212760U is provided with a first fixed plate and a support block. When the two ends of the workpiece are fixed by two ejector pins, the bottom end of the workpiece is placed on the support block, which protects the bottom end of the workpiece and prevents the workpiece from falling off. By providing a second fixed plate, a threaded rod, a guide rod, a pressure block and an arc groove, when the threaded rod is rotated, the pressure block moves downward and the arc groove moves closer to the workpiece. When the workpiece is detached from the ejector pin, the pressure block can limit and protect the workpiece, preventing the workpiece from flying out and causing damage.

[0004] While this structure can clamp the workpiece, the spring is prone to wobbling when it adapts to clamping workpieces of different sizes, resulting in low clamping stability. Therefore, we propose a clamping mechanism for an external cylindrical grinding machine that can stably clamp the workpiece to improve machining accuracy. Utility Model Content

[0005] The purpose of this invention is to provide a clamping mechanism for an external cylindrical grinding machine to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a clamping mechanism for an external cylindrical grinding machine, comprising a base plate, a bracket fixedly installed at the bottom of the base plate, a limit ring fixedly installed at the end of the bracket, and a processing assembly disposed above the base plate, the processing assembly including a clamping assembly disposed above the base plate, and an adjustment assembly disposed on the outside of the clamping assembly.

[0007] Preferably, the clamping assembly includes a turntable rotatably connected inside the limiting ring, a groove is provided inside the turntable, a slider is slidably disposed inside the groove, a connecting plate is fixedly installed on the outer wall of the slider, a push plate is hinged to the end of the connecting plate away from the slider, a cylinder is fixedly installed on the side wall of the push plate, a movable plate is fixedly installed on the side of the slider away from the connecting plate, a screw is threaded inside the movable plate, and a clamping block is rotatably connected to the end of the screw.

[0008] Preferably, the adjustment assembly includes a limiting ring fixedly sleeved on the outer wall of the turntable, a locking hole provided on the inner side of the limiting ring, an L-shaped frame fixedly installed on the outer wall of the limiting ring, a first magnetic ring fixedly installed on the inner side of the L-shaped frame, a locking pin slidably disposed inside the L-shaped frame, and a second magnetic ring fixedly installed on the outer wall of the locking pin.

[0009] Preferably, there are six movable plates distributed around the center of the turntable, which allows for omnidirectional clamping of the workpiece.

[0010] Preferably, the cylinder is fixedly installed at the end away from the push plate and at the side of the turntable close to the push plate. The push plate is hinged to the slider through the rear connecting plate. Under the sliding restriction between the slider and the slide groove, when the cylinder pushes the push plate, it pulls the slider through the connecting plate, so that the slider slides inside the slide groove. The six moving plates move in a converging motion, which, together with the clamping block, clamps the workpiece.

[0011] Preferably, the first magnetic ring and the second magnetic ring are magnetically repulsive, and the outer wall of the locking pin is slidably disposed with respect to the inside of the first magnetic ring. Under the restriction of magnetic repulsion, the locking pin, which is not pulled, can be reset and pushed so that the locking pin engages with the locking hole.

[0012] Preferably, the outer wall of the limiting ring is rotatably connected to the inside of the limiting ring, and the locking hole is opened on the side wall of the turntable. Under the restriction of the limiting ring, the turntable can rotate stably, and under the restriction of the locking pin end and the locking hole, the adjusted turntable can be positioned.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. The clamping mechanism of this cylindrical grinding machine consists of a clamping assembly. When the cylindrical grinding machine is in use, the workpiece needs to be clamped. The base plate, support, and limit ring are installed on the grinding machine. At this time, the workpiece is placed on the side of the turntable away from the cylinder. The cylinder is started, which pushes the push plate away from the turntable. Since the ends of the connecting plate are hinged to the slider and the push plate respectively, under its constraint, the push plate pulls the slider through the connecting plate, causing the slider to slide inside the slide groove. The six moving plates move in a converging motion. The moving plates drive the screw and the clamping block to move, so that the converging clamping block clamps the outer wall of the workpiece. When the outer wall of the workpiece is irregularly shaped, rotating the screw causes the screw to push against the clamping block due to the internal threaded connection between the screw and the moving plate, and the rotatable connection between the clamping block and the end of the screw. The six independently moving clamping blocks can adjust the clamping according to the shape of the workpiece. This structure can stably clamp the workpiece, and under the constraint of the independently moving clamping blocks, it can adaptively clamp the workpiece, making the workpiece easier to process (external cylindrical grinding machines are a common technique in this field, so they are not shown in the accompanying drawings of the specification, and their structure is not fully described).

[0015] 2. The clamping mechanism of this cylindrical grinding machine consists of an adjustment assembly. When machining the other side of the workpiece, the clamped workpiece needs to be rotated. At this time, the locking pin is pulled so that the end of the locking pin is no longer engaged with the locking hole on the side wall of the turntable. The turntable is rotated so that it rotates stably inside the limiting ring under the restriction of the limiting ring. After the rotation adjustment is completed, the locking pin is released. Under the restriction of the magnetic repulsion between the second magnetic ring and the first magnetic ring, the locking pin is pushed towards the turntable so that the end of the locking pin engages with the locking hole. This positions the turntable after the rotation adjustment, so that the cylindrical grinding machine can stably machine the workpiece. Attached Figure Description

[0016] Figure 1 This is a three-dimensional view of the structure of this utility model.

[0017] Figure 2 This is an exploded three-dimensional view of the structure of this utility model.

[0018] Figure 3 This is a diagram of the clamping assembly of the present invention.

[0019] Figure 4 This is an exploded view of the structural clamping component of this utility model.

[0020] Figure 5 This is a diagram of the structural adjustment component of this utility model.

[0021] Figure 6 This is a cross-sectional schematic diagram of the structural adjustment component of this utility model.

[0022] In the diagram: 1. Base plate; 2. Bracket; 3. Limiting ring; 4. Machining component; 41. Clamping component; 42. Adjusting component; 411. Turntable; 412. Slide groove; 413. Slider; 414. Connecting plate; 415. Push plate; 416. Moving plate; 417. Screw; 418. Clamping block; 419. Cylinder; 421. Limiting ring; 422. Locking hole; 423. L-shaped frame; 424. First magnetic ring; 425. Locking pin; 426. Second magnetic ring. Detailed Implementation

[0023] To provide a clearer understanding of the technical features, objectives, and effects of this utility model, the specific embodiments of this utility model are now described with reference to the accompanying drawings.

[0024] Example 1: A preferred embodiment of the clamping mechanism of an external cylindrical grinding machine provided by this utility model. Figures 1 to 6 As shown: A clamping mechanism for an external cylindrical grinding machine, including a base plate 1;

[0025] The bottom of the base plate 1 is fixedly installed with a bracket 2;

[0026] Limiting rings 3 are fixedly installed at the ends of bracket 2;

[0027] The processing assembly 4 is located above the base plate 1. The processing assembly 4 includes a clamping assembly 41 located above the base plate 1. The clamping assembly 41 includes a turntable 411 rotatably connected inside the limiting ring 3. A slide groove 412 is provided inside the turntable 411. A slider 413 is slidably arranged inside the slide groove 412. A connecting plate 414 is fixedly installed on the outer wall of the slider 413. A push plate 415 is hinged to the end of the connecting plate 414 away from the slider 413. A cylinder 419 is fixedly installed on the side wall of the push plate 415. A moving plate 416 is fixedly installed on the side of the slider 413 away from the connecting plate 414. A screw 417 is threaded inside the moving plate 416. A clamping block 418 is rotatably connected to the end of the screw 417.

[0028] In this embodiment, when the cylindrical grinding machine is in use, the workpiece needs to be clamped. The base plate 1, bracket 2, and limit ring 3 are installed on the grinding machine. At this time, the workpiece is placed on the side of the turntable 411 away from the cylinder 419. The cylinder 419 is started, which pushes the push plate 415 away from the turntable 411. Since the ends of the connecting plate 414 are hinged to the slider 413 and the push plate 415 respectively, under its restriction, the push plate 415 pulls the slider 413 through the connecting plate 414, so that the slider 413 slides inside the slide groove 412. The six moving plates 416 move in a converging motion. The moving plates 416 drive the screw 417 and the clamping block 418 to move, so that the converging clamping block 418 clamps the workpiece. When the outer wall of the workpiece is irregularly shaped, rotating the screw 417 causes the screw 417 to push the clamping block 418 under its constraint. The screw 417 is threaded into the moving plate 416, and the clamping block 418 is rotatably connected to the end of the screw 417. The six independently moving clamping blocks 418 can adjust the clamping according to the shape of the workpiece. This structure can stably clamp the workpiece, and under the constraint of the independently moving clamping blocks 418, it can adaptively clamp the workpiece, making the workpiece easier to process (external cylindrical grinding machines are a common technique in this field, so they are not shown in the accompanying drawings of the specification, and their structure is not fully described).

[0029] Furthermore, there are six movable plates 416, which are distributed circumferentially around the center of the turntable 411. With the constraint of the six movable plates 416, the workpiece can be clamped in all directions.

[0030] Furthermore, the end of the cylinder 419 away from the push plate 415 is fixedly installed on the side of the turntable 411 near the push plate 415. The push plate 415 is hinged to the slider 413 through the connecting plate 414. Under the sliding restriction of the slider 413 and the slide groove 412, when the cylinder 419 pushes the push plate 415, it pulls the slider 413 through the connecting plate 414, so that the slider 413 slides inside the slide groove 412. The six moving plates 416 move in a converging motion, which, together with the clamping block 418, clamps the workpiece.

[0031] Example 2: Based on Example 1, a preferred embodiment of the clamping mechanism of an external cylindrical grinding machine provided by this utility model is as follows: Figures 1 to 6 As shown: The adjustment component 42 includes a limiting ring 421 fixedly sleeved on the outer wall of the turntable 411. The inner side of the limiting ring 421 is provided with a locking hole 422. An L-shaped frame 423 is fixedly installed on the outer wall of the limiting ring 3. A first magnetic ring 424 is fixedly installed on the inner side of the L-shaped frame 423. A locking pin 425 is slidably arranged inside the L-shaped frame 423. A second magnetic ring 426 is fixedly installed on the outer wall of the locking pin 425.

[0032] In this embodiment, when processing the other side of the workpiece, the clamped workpiece needs to be rotated. At this time, pull the locking pin 425 so that the end of the locking pin 425 is no longer engaged with the locking hole 422 opened on the side wall of the turntable 411. Rotate the turntable 411 so that the turntable 411 rotates stably inside the limiting ring 3 under the restriction of the limiting ring 421. After the rotation adjustment is completed, release the locking pin 425. Under the restriction of the magnetic repulsion between the second magnetic ring 426 and the first magnetic ring 424, push the locking pin 425 towards the turntable 411 so that the end of the locking pin 425 engages with the locking hole 422. This will position the turntable 411 after the rotation adjustment, so that the external cylindrical grinding machine can stably process the workpiece.

[0033] Furthermore, the first magnetic ring 424 and the second magnetic ring 426 are magnetically repulsive, and the outer wall of the locking pin 425 is slidably disposed with the inside of the first magnetic ring 424. Under the restriction of magnetic repulsion, the locking pin 425, which is not pulled, can be reset and pushed so that the locking pin 425 engages with the locking hole 422.

[0034] In addition, the outer wall of the limiting ring 421 is rotatably connected to the inside of the limiting ring 3, and the locking hole 422 is opened on the side wall of the turntable 411. Under the restriction of the limiting ring 421, the turntable 411 can rotate stably. Under the restriction of the locking pin 425 and the locking hole 422, the adjusted turntable 411 can be positioned.

[0035] The above are merely illustrative embodiments of this utility model and are not intended to limit the scope of this utility model. Any equivalent changes and modifications made by those skilled in the art without departing from the concept and principles of this utility model should fall within the protection scope of this utility model. Furthermore, it should be noted that the components of this utility model are not limited to the overall application described above. Each technical feature described in the specification can be used individually or in combination as needed. Therefore, this utility model naturally covers other combinations and specific applications related to the points of this utility model.

Claims

1. A clamping mechanism for an external cylindrical grinding machine, comprising a base plate (1); The bottom of the base plate (1) is fixedly installed with a bracket (2); The bracket (2) is fixedly installed at the end of the bracket (3); And the processing assembly (4) disposed above the base plate (1), characterized in that: The processing component (4) includes a clamping component (41) disposed above the base plate (1), and an adjustment component (42) is disposed on the outside of the clamping component (41).

2. The clamping mechanism of an external cylindrical grinding machine according to claim 1, characterized in that: The clamping assembly (41) includes a turntable (411) rotatably connected inside the limiting ring (3). A sliding groove (412) is provided inside the turntable (411). A slider (413) is slidably arranged inside the sliding groove (412). A connecting plate (414) is fixedly installed on the outer wall of the slider (413). A push plate (415) is hinged to the end of the connecting plate (414) away from the slider (413). A cylinder (419) is fixedly installed on the side wall of the push plate (415). A moving plate (416) is fixedly installed on the side of the slider (413) away from the connecting plate (414). A screw (417) is threaded inside the moving plate (416). A clamping block (418) is rotatably connected to the end of the screw (417).

3. The clamping mechanism of an external cylindrical grinding machine according to claim 1, characterized in that: The adjustment component (42) includes a limiting ring (421) fixedly sleeved on the outer wall of the turntable (411). The limiting ring (421) has a locking hole (422) on its inner side. An L-shaped frame (423) is fixedly installed on the outer wall of the limiting ring (3). A first magnetic ring (424) is fixedly installed on the inner side of the L-shaped frame (423). A locking pin (425) is slidably arranged inside the L-shaped frame (423). A second magnetic ring (426) is fixedly installed on the outer wall of the locking pin (425).

4. The clamping mechanism of an external cylindrical grinding machine according to claim 2, characterized in that: There are six movable plates (416) arranged in a circle around the center of the turntable (411).

5. The clamping mechanism of an external cylindrical grinding machine according to claim 2, characterized in that: The cylinder (419) is fixedly installed at the end away from the push plate (415) and the turntable (411) is close to the push plate (415). The push plate (415) is hinged to the slider (413) through the rear connecting plate (414).

6. The clamping mechanism of an external cylindrical grinding machine according to claim 3, characterized in that: The first magnetic ring (424) and the second magnetic ring (426) are magnetically repulsive, and the outer wall of the latch (425) is slidably disposed with respect to the inside of the first magnetic ring (424).

7. The clamping mechanism of an external cylindrical grinding machine according to claim 3, characterized in that: The outer wall of the limiting ring (421) is rotatably connected to the inside of the limiting ring (3), and the card hole (422) is opened on the side wall of the turntable (411).

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