Clamping device of numerical control vertical milling machine

Abstract

The utility model discloses a clamping device of a numerical control vertical milling machine, which comprises a mechanical arm arranged on the numerical control vertical milling machine, the movable end of the mechanical arm is provided with a mounting plate, the mounting plate is provided with a clamping mechanism for clamping a workpiece, the clamping mechanism comprises two positioning plates which are arranged on the mounting plate and are oppositely arranged, and the positioning plates are arranged on the mounting plate. Two oppositely-arranged positioning frames are arranged between the two positioning plates through an adjusting mechanism, and clamping plates used for positioning and clamping workpieces are arranged on the positioning frames through spring telescopic pieces. The utility model relates to the technical field of clamping devices. According to the clamping device of the numerical control vertical milling machine, the two positioning frames can be driven to move through the arranged adjusting mechanism, and in the moving process, the positioning frames can drive the two clamping plates to conduct attached clamping on the two sides of a special-shaped workpiece; and through the arranged spring telescopic piece, a certain elastic buffering effect can be achieved when the special-shaped workpiece is clamped by the clamping plate.

Description

Technical Field

[0001] The utility model relates to the technical field of clamping devices, in particular to a clamping device for a numerically controlled vertical milling machine. Background Art

[0002] A CNC milling machine is a machine tool that uses a milling cutter to mill workpieces. It is widely used in the fields of mechanical manufacturing and repair. With the development of CNC milling machine manufacturing technology, the processing accuracy and volume of workpieces that can be processed have also increased. In the conventional application of CNC milling machines, the placement and loading of workpieces in CNC milling machines are all done manually, which poses a hidden danger to the safety of operators.

[0003] At present, a clamping device of a CNC vertical milling machine disclosed in the patent number "CN216828840U" includes a clamp, the clamp is fixed on a mounting plate, the mounting plate is fixed on one end of the fine-tuning shaft, the other end of the fine-tuning shaft is fixedly connected to the threaded shaft through a bearing sleeve, the middle and upper part of the threaded shaft is threadedly matched with the threaded sleeve, a guide groove is arranged inside the guide sleeve, guide blocks are arranged on both sides of the fine-tuning shaft, the guide blocks are slidably matched with the guide grooves, a gear ring is arranged on the outer side of the threaded sleeve, a driving gear matching therewith is arranged on the outer side of the gear ring, the driving gear is fixedly connected to the output shaft of the output motor, the guide sleeve and the output motor are respectively fixed on the mounting frame, the mounting frame is fixed on the long adjustment shaft, and the long adjustment shaft is arranged on the hydraulic telescopic device. The device can meet the micro-distance adjustment of the workpiece during processing, and can also meet the long-distance movement of the workpiece at different workstations. The adjustment process is simple and easy to operate, which is convenient for production.

[0004] However, existing mechanical workpieces include some special-shaped workpieces, and some of the special-shaped workpieces have some uneven arc edges, which results in only a part of the special-shaped workpiece being clamped during the clamping process. In this way, there is a great risk of the special-shaped workpiece falling during the clamping process. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a clamping device for a CNC vertical milling machine, which solves the problem that due to the presence of uneven arc edges on the edges of some special-shaped workpieces, only a part of the special-shaped workpiece can be clamped during the clamping process, thus posing a great risk of the special-shaped workpiece falling during the clamping process.

[0006] To achieve the above purpose, the utility model is implemented through the following technical solutions: a clamping device for a CNC vertical milling machine, comprising a mechanical arm installed on the CNC vertical milling machine, a mounting plate installed at the movable end of the mechanical arm, a clamping mechanism for clamping a workpiece installed on the mounting plate, the clamping mechanism comprising two positioning plates arranged on the mounting plate and arranged oppositely, two positioning frames arranged oppositely between the two positioning plates via an adjustment mechanism, a clamping plate for positioning and clamping the workpiece on the positioning frame via a spring telescopic member, and at least two groups of clamping plates on each positioning frame;

[0007] The clamping surface of the clamping plate is provided with a plurality of spring anti-sliding blocks, and the spring anti-sliding blocks include a positioning column arranged on the clamping plate, and the clamping plate is provided with a storage cavity for accommodating the positioning column, and the storage cavity is provided with an ejection spring for ejecting the positioning column, and a limiting mechanism for limiting and guiding the positioning column is provided between the storage cavity and the positioning column, and an anti-slip panel is provided at the protruding end of the positioning column extending out of the storage cavity.

[0008] Preferably, the adjustment mechanism includes a bidirectional screw rod arranged between two positioning plates, and the bidirectional screw rod is provided with two moving blocks that move synchronously and towards each other, the positioning frame is installed on the moving block via a connecting frame, the positioning plate is provided with a driving motor that drives the bidirectional screw rod to rotate, and a stabilizing mechanism is provided between the positioning plates for the moving block to slide stably.

[0009] Preferably, the stabilizing mechanism comprises a limiting light rod arranged between the fixing plates and located on both sides of the bidirectional screw rod, and the moving block is provided with a limiting through hole for the limiting light rod to pass through.

[0010] Preferably, the spring telescopic member includes a limiting guide rod arranged between the clamping plate and the positioning frame, the positioning frame is provided with a guide through hole for the limiting guide rod to pass through, the protruding end of the limiting guide rod passing through the guide through hole is provided with an anti-slip block, and the limiting guide rod is provided with a compression spring in a compressed state and is located between the positioning frame and the clamping plate.

[0011] Preferably, the positioning frame is provided with an orientation groove which is arranged parallel to the limiting guide rod, and the clamping plate is provided with an orientation sliding block which slides linearly along the orientation groove.

[0012] Preferably, the limiting mechanism comprises a limiting block which is arranged at the inner end of the positioning column and is arranged in a cross shape, and a limiting groove which cooperates with the limiting block is provided in the receiving cavity.

[0013] Preferably, the anti-slip panel is provided with a plurality of anti-slip strips which are evenly distributed.

[0014] Preferably, both ends of the compression spring are provided with a substrate, and a pressure sensor for detecting the pressure between the substrate and the clamping plate is provided between the substrate and the clamping plate.

[0015] Beneficial Effects

[0016] The utility model provides a clamping device for a CNC vertical milling machine. Compared with the prior art, the utility model has the following beneficial effects:

[0017] (1) The clamping device of the CNC vertical milling machine can drive the two positioning frames to move through the provided adjustment mechanism, and the positioning frames can drive the two clamping plates to clamp the two sides of the special-shaped workpiece, and the provided spring telescopic parts can make the clamping plates play a certain elastic buffering role when clamping the special-shaped workpiece.

[0018] (2) In the clamping process of the clamping plate of the CNC vertical milling machine, when some anti-slip panels encounter some uneven curved edges, the ejection springs and the positioning columns arranged in the storage cavity can cooperate to clamp the uneven edges of the special-shaped workpieces. Specifically, the uneven edges cause the telescopic states of the positioning columns to be different, thereby forming a clamping state for the special-shaped workpiece, which improves the clamping ability of the special-shaped workpieces to a certain extent, and does not affect the clamping of conventional workpieces.

[0019] (3) The clamping device of the CNC vertical milling machine has base plates at both ends of the clamping spring and a pressure sensor between the base plate and the clamping plate. This allows the pressure sensor to detect the pressure between the clamping plate and the base plate, and timely adjustments can be made during the detection process to avoid excessive clamping force on special-shaped workpieces that may cause damage to the object. If the clamping force is too small, it will not have a good clamping effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of a clamping device of a CNC vertical milling machine of the utility model;

[0021] Figure 2 It is a structural schematic diagram of the clamping plate of the utility model;

[0022] Figure 3 It is a structural schematic diagram of the spring expansion member of the utility model;

[0023] Figure 4 This is a schematic structural diagram of the spring anti-sliding block of the utility model;

[0024] Figure 5 It is a structural schematic diagram of the pressure sensor of the utility model.

[0025] In the figure: 1. Robotic arm; 2. Mounting plate; 3. Positioning plate; 4. Positioning frame; 5. Clamping plate; 6. Positioning column; 7. Storage cavity; 8. Ejection spring; 9. Anti-slip panel; 10. Bidirectional screw rod; 11. Moving block; 12. Connecting frame; 13. Limiting light rod; 14. Limiting guide rod; 15. Compression spring; 16. Orienting groove; 17. Orienting slider; 18. Limiting block; 19. Limiting groove; 20. Anti-slip strip; 21. Base plate; 22. Pressure sensor. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] The utility model provides two technical solutions:

[0028] Figure 1-4 The first embodiment is shown: a clamping device for a CNC vertical milling machine, comprising a mechanical arm 1 installed on the CNC vertical milling machine, a mounting plate 2 installed on the movable end of the mechanical arm 1, a clamping mechanism for clamping a workpiece installed on the mounting plate 2, the clamping mechanism comprising two positioning plates 3 arranged on the mounting plate 2 and arranged oppositely, two positioning frames 4 arranged oppositely between the two positioning plates 3 via an adjustment mechanism, a clamping plate 5 for positioning and clamping the workpiece on the positioning frame 4 via a spring telescopic member, and at least two groups of clamping plates 5 on each positioning frame 4;

[0029] The clamping surface of the clamping plate 5 is provided with a plurality of spring anti-sliding blocks, which include a positioning column 6 arranged on the clamping plate 5, a receiving cavity 7 for receiving the positioning column 6 is provided on the clamping plate 5, an ejection spring 8 for ejecting the positioning column 6 is provided in the receiving cavity 7, a limiting mechanism for limiting and guiding the positioning column 6 is provided between the receiving cavity 7 and the positioning column 6, and an anti-slip panel 9 is provided at the protruding end of the positioning column 6 extending out of the receiving cavity 7.

[0030] Among them, the adjustment mechanism includes a bidirectional screw 10 arranged between two positioning plates 3, and the bidirectional screw 10 is provided with two moving blocks 11 that move synchronously and in opposite directions. The positioning frame 4 is installed on the moving block 11 via the connecting frame 12. The positioning plate 3 is provided with a driving motor that drives the bidirectional screw 10 to rotate, and a stabilizing mechanism for the moving block 11 to slide stably is provided between the positioning plates 3; wherein, in the specific working process, the bidirectional screw 10 is driven to rotate by the set driving motor, so that the two moving blocks 11 rotate synchronously and in opposite directions, and then the clamping plate 5 can clamp the workpiece synchronously.

[0031] Among them, the stabilizing mechanism includes a limiting light rod 13 arranged between the fixed plates and located on both sides of the bidirectional screw rod 10. The moving block 11 is provided with a limiting through hole for the limiting light rod 13 to pass through, which can make the moving block 11 more stable during the movement process, which is conducive to the clamping plate 5 to clamp the workpiece.

[0032] Among them, the spring telescopic part includes a limiting guide rod 14 arranged between the clamping plate 5 and the positioning frame 4, the positioning frame 4 is provided with a guide through-hole for the limiting guide rod 14 to pass through, the protruding end of the limiting guide rod 14 passing through the guide through-hole is provided with an anti-slip block, the limiting guide rod 14 and a compression spring 15 in a compressed state are provided between the positioning frame 4 and the clamping plate 5; it should be noted that when the clamping plate 5 is in a non-working state, the compression spring 15 at this time also has a lateral elastic force on the clamping plate 5, and the elastic force increases due to the continuous deformation of the compression spring 15 during operation, which improves the clamping ability of the clamping plate 5 to a certain extent; the specific telescopic process is that when the clamping plate 5 begins to abut against the outer surface of the workpiece and clamps it, the limiting guide rod 14 guides the through-hole to telescope, and while telescoping, the compression spring 15 always has an elastic force on the clamping plate 5, which is conducive to clamping the workpiece.

[0033] The positioning frame 4 is provided with an orientation groove 16 which is arranged parallel to the limiting guide rod 14 , and the clamping plate 5 is provided with an orientation slider 17 which slides linearly along the orientation groove 16 , so that the clamping plate 5 can move more stably during the clamping process.

[0034] Among them, the limiting mechanism includes a limiting block 18 arranged in a cross shape at the inner end of the positioning column 6, and a limiting groove 19 matching the limiting block 18 is provided in the storage cavity 7, which has a limiting effect on the positioning column 6 and makes its movement more stable.

[0035] Among them, a plurality of anti-skid strips 20 are arranged on the anti-skid panel 9 and are evenly distributed, which play a certain anti-skid role.

[0036] The two positioning frames 4 can be driven to move by the arranged adjusting mechanism, and the positioning frames 4 during the movement can drive the two clamping plates 5 to fit and clamp the two sides of the special-shaped workpiece, and the arranged spring telescopic parts can allow the clamping plates 5 to play a certain elastic buffering role when clamping the special-shaped workpiece; in the process of clamping the clamping plates 5, when some anti-slip panels 9 encounter some uneven arc edges, they can clamp the uneven edges of the special-shaped workpiece with the cooperation of the ejection springs 8 and the positioning columns 6 arranged in the storage chamber 7. Specifically, the uneven edges make the telescopic states of the positioning columns 6 different, thereby forming a clamping state for the special-shaped workpiece, which improves the clamping ability of the special-shaped workpiece to a certain extent, and does not affect the clamping of conventional workpieces.

[0037] Figure 1 and Figure 5 A second embodiment is shown, which mainly differs from the first embodiment in that a substrate 21 is provided at both ends of the compression spring 15 , and a pressure sensor 22 for detecting the pressure between the substrate 21 and the clamping plate 5 is provided between the substrate 21 and the clamping plate 5 .

[0038] By providing a substrate 21 at both ends of the clamping spring 15 and a pressure sensor 22 between the substrate 21 and the clamping plate 5, the pressure sensor 22 can detect the pressure between the clamping plate 5 and the substrate 21, and can be adjusted in time during the detection process to avoid excessive clamping force on the special-shaped workpiece and damage to the object, and if the clamping force is too small, it will not have a good clamping effect.

[0039] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art, and the model parameters of each electrical appliance are not specifically limited, and conventional equipment can be used.

[0040] When in use, firstly, the two positioning frames 4 can be driven to move through the arranged adjustment mechanism, and during the movement, the positioning frames 4 can drive the two clamping plates 5 to fit and clamp the two sides of the special-shaped workpiece, and the arranged spring telescopic parts can allow the clamping plates 5 to play a certain elastic buffering role when clamping the special-shaped workpiece; in the process of clamping the clamping plates 5, when some anti-slip panels 9 encounter some uneven arc edges, they can be clamped on the uneven edges of the special-shaped workpiece with the cooperation of the ejection springs 8 and the positioning columns 6 arranged in the storage chamber 7. Due to the uneven edges, the telescopic state of the positioning column 6 is different to form a clamping state for the special-shaped workpiece, which improves the clamping ability of the special-shaped workpiece to a certain extent, and does not affect the clamping of the conventional workpiece; wherein, by providing a substrate 21 at both ends of the clamping spring 15 and a pressure sensor 22 between the substrate 21 and the clamping plate 5, the pressure sensor 22 can detect the pressure between the clamping plate 5 and the substrate 21, and then can be adjusted in time during the detection process to avoid excessive clamping force on the special-shaped workpiece and damage to the object, and if the clamping force is too small, it will not play a good clamping effect.

[0041] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0042] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A gripping device for a CNC vertical milling machine, comprising a mechanical arm (1) mounted on the CNC vertical milling machine, characterized in that: The movable end of the mechanical arm (1) is provided with a mounting plate (2), and a clamping mechanism for clamping a workpiece is installed on the mounting plate (2), and the clamping mechanism comprises two positioning plates (3) arranged on the mounting plate (2) and arranged opposite to each other, and two positioning frames (4) arranged opposite to each other are arranged between the two positioning plates (3) via an adjustment mechanism, and a clamping plate (5) for positioning and clamping the workpiece is arranged on the positioning frame (4) via a spring telescopic member, and at least two groups of clamping plates (5) are arranged on each positioning frame (4); The clamping surface of the clamping plate (5) is provided with a plurality of spring anti-sliding blocks, the spring anti-sliding blocks comprising a positioning column (6) arranged on the clamping plate (5), the clamping plate (5) is provided with a storage cavity (7) for storing the positioning column (6), the storage cavity (7) is provided with an ejection spring (8) for ejecting the positioning column (6), a limiting mechanism for limiting and guiding the positioning column (6) is provided between the storage cavity (7) and the positioning column (6), and an anti-slip panel (9) is provided at the protruding end of the positioning column (6) protruding from the storage cavity (7).

2. The clamping device for a CNC vertical milling machine according to claim 1, characterized in that: The adjustment mechanism comprises a bidirectional screw rod (10) arranged between two positioning plates (3), and the bidirectional screw rod (10) is provided with two moving blocks (11) that move synchronously and towards each other, the positioning frame (4) is installed on the moving blocks (11) via a connecting frame (12), the positioning plates (3) are provided with a driving motor that drives the bidirectional screw rod (10) to rotate, and a stabilizing mechanism for the moving blocks (11) to slide stably is provided between the positioning plates (3).

3. The clamping device for a CNC vertical milling machine according to claim 2, characterized in that: The stabilizing mechanism comprises a limiting light rod (13) arranged between the fixing plates and located on both sides of the bidirectional screw rod (10); the moving block (11) is provided with a limiting through hole for the limiting light rod (13) to pass through.

4. The clamping device for a CNC vertical milling machine according to claim 1, characterized in that: The spring expansion component comprises a limiting guide rod (14) arranged between the clamping plate (5) and the positioning frame (4); the positioning frame (4) is provided with a guide through hole for the limiting guide rod (14) to pass through; the protruding end of the limiting guide rod (14) passing through the guide through hole is provided with an anti-slip block; the limiting guide rod (14) is provided with a compression spring (15) in a compressed state and is located between the positioning frame (4) and the clamping plate (5).

5. The clamping device for a CNC vertical milling machine according to claim 4, characterized in that: The positioning frame (4) is provided with an orientation groove (16) arranged parallel to the limiting guide rod (14), and the clamping plate (5) is provided with an orientation sliding block (17) which slides linearly along the orientation groove (16).

6. The clamping device for a CNC vertical milling machine according to claim 1, characterized in that: The limiting mechanism comprises a limiting block (18) arranged at the inner end of the positioning column (6) and arranged in a cross shape, and a limiting groove (19) matching with the limiting block (18) is provided in the storage cavity (7).

7. The clamping device for a CNC vertical milling machine according to claim 1, characterized in that: The anti-slip panel (9) is provided with a plurality of anti-slip strips (20) which are evenly distributed.

8. The clamping device for a CNC vertical milling machine according to claim 4, characterized in that: Both ends of the compression spring (15) are provided with a base plate (21), and a pressure sensor (22) for detecting the pressure between the base plate (21) and the clamping plate (5) is provided between the base plate (21) and the clamping plate (5).

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