Clamping mechanism of CNC (computer numerical control) machining center

Abstract

The utility model discloses a CNC (computer numerical control) machining center clamping mechanism, which relates to the technical field of numerical control machining and comprises a supporting seat, two working plates and a plurality of fixing blocks, the two working plates are symmetrically and fixedly connected to the top of the supporting seat, and the fixing blocks are fixedly connected to four corners of the top of the supporting seat; a telescopic structure is arranged, the telescopic structure is provided with a center block, two symmetrically-distributed first sliding rods are slidably connected to the interior of the center block, and second sliding rods are slidably connected to the interiors of the first sliding rods. Through a telescopic structure formed by a center block, a first sliding rod and a second sliding rod, a moving strip is not interfered when moving, so that a first clamping block and a second clamping block are placed on the same plane, and the first clamping block and the second clamping block can clamp the periphery of an object at the same time.

Description

Technical Field

[0001] The utility model relates to the technical field of numerical control machining, in particular to a clamping mechanism for a CNC numerical control machining center. Background Art

[0002] CNC machining center is a highly intelligent CNC machining equipment that integrates CNC technology, automatic control and computer technology. CNC machining center is an intelligent and efficient CNC machining equipment widely used in modern manufacturing industry, and plays an important role in improving production efficiency and machining accuracy.

[0003] Existing CNC machining centers usually require external clamps to fix objects, and when fixing, they can often only fix the two sides of the object, but are not convenient for fixing the periphery of the object. Utility Model Content

[0004] The utility model aims to provide a clamping mechanism for a CNC machining center to solve the problem that the existing CNC machining center in the above-mentioned background technology requires an outer clamp to fix an object, but can only fix two sides of the object when fixing it, and is not convenient to fix the periphery of the object.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a clamping mechanism for a CNC machining center, comprising a support seat, a work plate, and a fixed block, wherein two work plates are provided, and the two work plates are symmetrically fixedly connected to the top of the support seat, and a plurality of fixed blocks are provided, and the fixed blocks are fixedly connected to the four corners of the top of the support seat;

[0006] Telescopic structures are symmetrically provided on both sides of the top of the work board, and the telescopic structure is provided with a center block, and two symmetrically distributed first sliding rods are slidably connected inside the center block, and second sliding rods are slidably connected inside the first sliding rods, and racks are fixedly connected to the inner ends of the second sliding rods. A gear is rotatably connected in the middle of the center block, and the outer side of the gear is meshed with the rack.

[0007] Preferably, a first clamping block is fixedly connected to the inner side of the center block, and a driving block is fixedly connected to the bottom, and the threads inside the two driving blocks are in opposite directions.

[0008] Preferably, the two driving blocks are internally threadedly connected with a transverse screw rod, and the transverse screw rod is driven by a motor, and the transverse screw rod is rotatably connected to the inside of the support seat.

[0009] Preferably, the fixed block is rotatably connected to a longitudinal screw rod, and the outer sides of the two longitudinal screw rods are threadedly connected to two moving bars, and the internal threads of the moving bars are in opposite directions. The other end of the moving bar is internally slidably connected to a positioning rod, and the positioning rod is fixedly connected between the two fixed blocks. The end of the longitudinal screw rod is rotatably connected to the output end of the motion motor through a belt.

[0010] Preferably, a slide groove is provided inside the moving bar, and a slide bar is slidably connected inside the slide groove, and the slide bar is fixedly connected to the end of the second slide rod, and a second clamping block is fixedly connected to the inner side of the slide groove, and the second clamping block is located on the top of the support seat.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] The clamping mechanism of a CNC machining center is provided with a telescopic structure. When the longitudinal screw drives the two moving bars to approach each other, the telescopic structure formed by the central block, the first slide bar and the second slide bar allows the moving bars to move without interference, so that the first clamping block and the second clamping block are placed on the same plane, so that the first clamping block and the second clamping block can clamp the object at the same time.

[0013] Furthermore, when the second slide bar slides inside the first slide bar, the second slide bar will drive the rack to rotate the gear, so that the gear drives another rack to move, so that the two second slide bars move relative to each other at the same time, thereby keeping the first clamping block always in the middle of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the structure of the support seat of the utility model;

[0016] Figure 3 This is a schematic diagram of the cross-sectional structure of the central block of the utility model;

[0017] Figure 4 This is a schematic diagram of the transverse screw structure of the utility model;

[0018] Figure 5 This is a schematic diagram of the longitudinal screw structure of the utility model.

[0019] In the figure: 1. support seat; 2. working plate; 3. fixed block; 4. center block; 5. first slide bar; 6. second slide bar; 7. rack; 8. gear; 9. drive block; 10. slide bar; 11. first clamping block; 12. transverse screw rod; 13. moving bar; 14. slide groove; 15. second clamping block; 16. longitudinal screw rod; 17. moving motor; 18. positioning rod. DETAILED DESCRIPTION

[0020] 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.

[0021] In a further preferred embodiment of the present invention, Figure 1 - Figure 3 As shown, two work plates 2 are provided, and the two work plates 2 are symmetrically fixedly connected to the top of the support seat 1, and multiple fixed blocks 3 are provided, and the fixed blocks 3 are fixedly connected to the four corners of the top of the support seat 1; telescopic structures are symmetrically provided on both sides of the top of the work plate 2, and the telescopic structure is provided with a center block 4, and two symmetrically distributed first slide bars 5 are slidably connected inside the center block 4, and the first slide bars 5 are slidably connected inside, and the second slide bars 6 are fixedly connected to the inner ends of the second slide bars 6. A gear 8 is rotatably connected in the middle of the center block 4, and the outer side of the gear 8 is meshed with the rack 7, a first clamping block 11 is fixedly connected to the inner side of the center block 4, and a driving block 9 is fixedly connected to the bottom, and the threads inside the two driving blocks 9 are in opposite directions;

[0022] When the longitudinal screw rod 16 drives the two moving bars 13 to approach each other, the telescopic structure formed by the central block 4, the first slide bar 5, and the second slide bar 6 makes the moving bars 13 free from interference during movement, so that the first clamping block 11 and the second clamping block 15 are placed on the same plane, so that the first clamping block 11 and the second clamping block 15 can clamp the object on all sides at the same time;

[0023] When the second slide bar 6 slides inside the first slide bar 5, the second slide bar 6 will drive the rack 7 to rotate the gear 8, so that the gear 8 drives another rack 7 to move, so that the two second slide bars 6 move relative to each other at the same time, thereby keeping the first clamping block 11 always in the middle of the device.

[0024] In a further preferred embodiment of the present invention, Figure 4 As shown, the two drive blocks 9 are internally threadedly connected with a transverse screw rod 12, and the transverse screw rod 12 is driven by a motor, and the transverse screw rod 12 is rotatably connected to the inside of the support seat 1;

[0025] When the transverse screw rod 12 drives the driving block 9 to move, the two center blocks 4 can move relative to each other at the same time because the threads inside the two driving blocks 9 are in opposite directions.

[0026] In a further preferred embodiment of the present invention, Figure 5As shown, a longitudinal screw rod 16 is rotatably connected inside the fixed block 3, and two moving bars 13 are threadedly connected to the outer sides of the two longitudinal screw rods 16, and the threads inside the moving bars 13 are in opposite directions, and a positioning rod 18 is slidably connected inside the other end of the moving bar 13, and the positioning rod 18 is fixedly connected between the two fixed blocks 3, and the end of the longitudinal screw rod 16 is rotatably connected to the output end of the moving motor 17 through a belt, a slide groove 14 is provided inside the moving bar 13, and a slide bar 10 is slidably connected inside the slide groove 14, and the slide bar 10 is fixedly connected to the end of the second slide bar 6, and a second clamping block 15 is fixedly connected to the inner side of the slide groove 14, and the second clamping block 15 is located at the top of the support seat 1;

[0027] When the longitudinal screw rod 16 drives the moving bar 13 to move, since the threads inside the two moving bars 13 are in opposite directions, the two moving bars 13 can move relative to each other at the same time, so that the two second clamping blocks 15 move relative to each other at the same time until the second clamping blocks 15 come into contact with the object. When the moving bar 13 moves, the other end of the moving bar 13 slides on the outside of the positioning rod 18 to limit the movement state of the moving bar 13.

[0028] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it 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. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A clamping mechanism for a CNC machining center, comprising a support base (1), a work plate (2), and a fixed block (3), wherein two work plates (2) are provided, and the two work plates (2) are symmetrically fixedly connected to the top of the support base (1), and a plurality of fixed blocks (3) are provided, and the fixed blocks (3) are fixedly connected to the four corners of the top of the support base (1); Features: Both sides of the top of the work board (2) are symmetrically provided with telescopic structures, the telescopic structure is provided with a center block (4), and two symmetrically distributed first slide bars (5) are slidably connected inside the center block (4), and the first slide bars (5) are slidably connected inside the second slide bars (6), the inner ends of the second slide bars (6) are fixedly connected with racks (7), and the center of the center block (4) is rotatably connected with a gear (8), and the outer side of the gear (8) is meshed with the rack (7).

2. A CNC machining center clamping mechanism according to claim 1, characterized in that: The center block (4) is fixedly connected to a first clamping block (11) on its inner side, and is fixedly connected to a driving block (9) on its bottom, and the threads inside the two driving blocks (9) are in opposite directions.

3. A CNC machining center clamping mechanism according to claim 2, characterized in that: The two driving blocks (9) are internally threadedly connected with a transverse screw rod (12), and the transverse screw rod (12) is driven by a motor, and the transverse screw rod (12) is rotatably connected to the inside of the support seat (1).

4. A CNC machining center clamping mechanism according to claim 3, characterized in that: The fixed block (3) is internally rotatably connected with a longitudinal screw rod (16), and the outer sides of the two longitudinal screw rods (16) are threadedly connected with two moving bars (13), and the internal threads of the moving bars (13) are in opposite directions. The other end of the moving bar (13) is internally slidably connected with a positioning rod (18), and the positioning rod (18) is fixedly connected between the two fixed blocks (3). The end of the longitudinal screw rod (16) is rotatably connected to the output end of the moving motor (17) through a belt.

5. The clamping mechanism for a CNC machining center according to claim 4, characterized in that: The moving bar (13) is provided with a slide groove (14) inside, and a slide bar (10) is slidably connected inside the slide groove (14), and the slide bar (10) is fixedly connected to the end of the second slide rod (6), and a second clamping block (15) is fixedly connected inside the slide groove (14), and the second clamping block (15) is located on the top of the support seat (1).

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