Hydraulic clamp of numerical control milling machine

Abstract

The utility model belongs to the technical field of clamps, and particularly relates to a hydraulic clamp of a numerical control milling machine, which comprises a base, two support plates are fixed on the inner wall of the bottom of the base, a bidirectional screw rod is rotatably connected between the two support plates through bearings, and two ends of the bidirectional screw rod are in threaded connection with moving blocks matched with threads on the surface of the bidirectional screw rod. Through the arrangement of the base, the supporting plate, the bidirectional lead screw, the moving block, the sliding block, the flow guide plate, the supporting block, the mounting plate, the clamping plate, the arc-shaped clamping assembly, the first hydraulic cylinder, the first rack and the first gear, in the using process of the hydraulic clamp, after a workpiece is placed on the clamp, the workpiece can be automatically clamped and fixed under the driving of the first hydraulic cylinder, and the working efficiency is improved. And when the hydraulic clamp is used, the two clamping plates are matched to clamp and fix a workpiece in a square shape, and the arc-shaped clamping assembly can clamp and fix a round workpiece, so that the universality of the hydraulic clamp is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of clamps, in particular to a hydraulic clamp of a numerically controlled milling machine. Background Art

[0002] CNC machine tools are automated machine tools equipped with program control systems. CNC machine tools integrate mechanical, automation, computer, microelectronics and other technologies to solve the processing problems of complex, precise and small-batch parts. They are flexible and high-efficiency automated machine tools. CNC machine tools have strong adaptability to processing objects, high processing accuracy, stable processing quality, high productivity, high reliability and improved working conditions. In the process of CNC machine tools processing workpieces, corresponding fixtures are required. However, during the use of current fixtures, most of them are to place the workpiece on the fixture, and then manually clamp the workpiece, and the fixture cannot clamp workpieces of different shapes, so that different fixtures are needed when processing workpieces of different shapes. Therefore, we propose a hydraulic fixture for CNC milling machines to solve the above problems. Utility Model Content

[0003] 1. Technical issues to be solved

[0004] In view of the deficiencies in the prior art, the utility model provides a hydraulic clamp for a CNC milling machine, which solves the problems raised in the above-mentioned background technology.

[0005] (II) Technical solution

[0006] In order to achieve the above-mentioned purpose, the utility model specifically adopts the following technical solutions:

[0007] Material toggling mechanism, its both ends are to be connected with the gear train coupling, and the gear train is connected with the gear train coupling, and the gear train is connected with the gear train coupling, and the gear train is connected with the gear train coupling.

[0008] Furthermore, the arc clamping assembly includes arc blocks respectively fixed on the top of the mounting plates, two first bearing plates are fixed on one side wall of the left mounting plate, a second bearing plate is fixed on one side wall of the right mounting plate, a first clearance groove matched with the second bearing plate is opened on the top of the left mounting plate, and two second clearance grooves matched with the first bearing plate are opened on the top of the right mounting plate.

[0009] Furthermore, a non-slip rubber pad matching the shape of the arc-shaped block is fixed to one side wall of the arc-shaped block.

[0010] Furthermore, four through slots adapted to the sliding blocks are formed on the top of the guide plate, two elastic cloths are fixed inside the through slots, and the other ends of the elastic cloths are fixedly connected to the corresponding sliding blocks respectively.

[0011] Furthermore, two mounting blocks are fixed to both side walls of the base, and mounting holes are formed on the tops of the mounting blocks.

[0012] Furthermore, one side wall of the two clamping plates is equidistantly fixed with anti-slip convex strips.

[0013] (III) Beneficial effects

[0014] Compared with the prior art, the utility model provides a hydraulic clamp for a CNC milling machine, which has the following features:

[0015] Beneficial effects:

[0016] The utility model provides a base, a support plate, a two-way screw rod, a moving block, a sliding block, a guide plate, a support block, a mounting plate, a clamping plate, an arc-shaped clamping assembly, a first hydraulic cylinder, a first rack and a first gear. During the use of the hydraulic clamp, after the workpiece is placed on the clamp, the workpiece can be automatically clamped and fixed under the drive of the first hydraulic cylinder. When the hydraulic clamp is used, the cooperation of the two clamping plates can be used to clamp and fix workpieces of opposite shapes, and the arc-shaped clamping assembly can clamp and fix circular workpieces, thereby increasing the versatility of the hydraulic clamp. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the internal structure of the base of the utility model;

[0019] Figure 3 This is a schematic diagram of the structure of the mounting plate of the utility model;

[0020] Figure 4 This is a schematic diagram of the structure of the mobile block of the utility model.

[0021] In the figure: 1, base; 2, support plate; 3, bidirectional screw; 4, moving block; 5, guide rod; 6, sliding block; 7, guide plate; 8, support block; 9, mounting plate; 10, clamping plate; 11, arc clamping assembly; 1101, arc block; 1102, first bearing plate; 1103, second bearing plate; 1104, first make way groove; 1105, second make way groove; 1106, anti-skid rubber pad; 12, first hydraulic cylinder; 13, first rack; 14, first gear; 15, through groove; 16, elastic cloth; 17, mounting block; 18, anti-skid convex strip; 19, rotating shaft; 20, second gear; 21, second rack; 22, second hydraulic cylinder; 23, third rack. DETAILED DESCRIPTION

[0022] 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.

[0023] Example

[0024] like Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, a hydraulic clamp for a CNC milling machine proposed in one embodiment of the utility model comprises a base 1, two mounting blocks 17 are fixed to both side walls of the base 1, and mounting holes are provided on the tops of the mounting blocks 17. The mounting blocks 17 are provided so that it is more convenient to install and fix the hydraulic clamp. Two support plates 2 are fixed to the bottom inner wall of the base 1, and a bidirectional screw rod 3 is rotatably connected between the two support plates 2 through a bearing. Both ends of the bidirectional screw rod 3 are threadedly connected to a moving block 4 adapted to the surface thread thereof, and two guide rods 5 are fixed between the two support plates 2. The moving blocks 4 slide on the surfaces of the two guide rods 5, two sliding blocks 6 are fixed on the top of the moving blocks 4, a guide plate 7 is fixed on the top of the base 1, and the tops of the sliding blocks 6 slide through the guide plate 7 and extend above it. Support blocks 8 are fixed on the tops of the two sliding blocks 6 on the same side, and mounting plates 9 are installed on the tops of the supporting blocks 8 by bolts. Clamps 10 are fixed on the tops of the mounting plates 9. Anti-slip convex strips 18 are fixed on one side wall of the two clamps 10 at equal distances, which can increase the friction between the clamps 10 and the surface of the clamped workpiece, so that the workpiece will be more stable after being clamped and fixed. The top of the two mounting plates 9 is provided with an arc-shaped clamping assembly 11, the top inner wall of the base 1 is fixed with a first hydraulic cylinder 12, the ejection end of the first hydraulic cylinder 12 is fixed with a first rack 13, the surface of the bidirectional screw rod 3 is fixed with a first gear 14, the first gear 14 is meshed and connected with the first rack 13, when using this hydraulic clamp, the ejection end of the first hydraulic cylinder 12 is started to drive the first rack 13 to move, with the cooperation of the first gear 14, the bidirectional screw rod 3 can be driven to rotate at the same time, and after the bidirectional screw rod 3 rotates, it will drive the two moving blocks 4 to move in the opposite direction, and the moving blocks 4 move When the two clamping plates 10 are adjusted to a suitable spacing, the square workpiece to be fixed can be placed on the two mounting plates 9, and then the two clamping plates 10 can be moved to clamp and fix the workpiece. When a circular workpiece needs to be clamped, the mounting plates 9 can be disassembled and their positions can be exchanged respectively, and then the above operation can be repeated to clamp and fix the circular workpiece. The top of the guide plate 7 is arranged to be inclined to facilitate the falling of the debris generated when processing the workpiece.

[0025] like Figure 4As shown, there is another method for driving the two moving blocks 4 to move in opposite directions at the same time in the utility model, which includes a rotating shaft 19 rotatably connected between the inner walls on both sides of the base 1 through a bearing, a second gear 20 is fixed to the surface of the rotating shaft 19, a second rack 21 is fixed to one side wall of the two moving blocks 4, and the two second racks 21 are meshed with the second gear 20. A second hydraulic cylinder 22 is fixed to the top inner wall of the base 1, and a third rack 23 is fixed to the ejection end of the second hydraulic cylinder 22, and the third rack 23 is meshed with the second gear 20. When in use, the third rack 23 is driven to move by starting the ejection end of the second hydraulic cylinder 22. After the third rack 23 moves, it can drive the second gear 20 to rotate, and when the second gear 20 rotates, it will simultaneously drive the two second racks 21 to move in opposite directions, thereby driving the two moving blocks 4 to move in opposite directions.

[0026] like Figure 1 and Figure 3 As shown, in some embodiments, the arc clamping assembly 11 includes arc blocks 1101 respectively fixed to the top of the mounting plate 9, and a side wall of the arc block 1101 is fixed with a non-slip rubber pad 1106 that matches its shape, which can increase the friction between the arc block 1101 and the fixed workpiece, so that the workpiece will be more stable after clamping and fixing. Two first bearing plates 1102 are fixed to one side wall of the left mounting plate 9, and a second bearing plate 1103 is fixed to one side wall of the right mounting plate 9. A first clearance groove 1106 that matches the second bearing plate 1103 is opened on the top of the left mounting plate 9. 104. Two second easing grooves 1105 matched with the first supporting plate 1102 are provided on the top of the right mounting plate 9. When in use, after the two arc blocks 1101 are adjusted to a suitable position, the circular workpiece can be placed on the first supporting plate 1102 and the second supporting plate 1103. Then, when the two arc blocks 1101 continue to approach, the circular workpiece can be clamped and fixed. The first easing groove 1104 and the second easing groove 1105 can be used to make way, so that the first supporting plate 1102 and the second supporting plate 1103 will not interfere with the mounting plate 9 when they move.

[0027] like Figure 1 and Figure 2 As shown, in some embodiments, four through grooves 15 adapted to the sliding block 6 are opened on the top of the guide plate 7, and two elastic cloths 16 are fixed inside the through grooves 15. The other ends of the elastic cloths 16 are respectively fixedly connected to the corresponding sliding blocks 6 to play a role of giving way, so that the sliding blocks 6 will not be interfered when sliding through the guide plate 7. The elastic cloths 16 can be used to block the debris generated during processing, thereby preventing the debris from falling into the inside of the base 1 through the through grooves 15.

[0028] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A hydraulic clamp for a CNC milling machine, comprising a base (1), characterized in that: Two support plates (2) are fixed to the inner wall of the bottom of the base (1); a bidirectional screw rod (3) is rotatably connected between the two support plates (2) via a bearing; both ends of the bidirectional screw rod (3) are threadedly connected to a moving block (4) adapted to the thread on the surface thereof; two guide rods (5) are fixed between the two support plates (2); the moving blocks (4) slide on the surfaces of the two guide rods (5); two sliding blocks (6) are fixed on the top of the moving blocks (4); a guide plate (7) is fixed on the top of the base (1); the tops of the sliding blocks (6) slide through the guide plate (7) and extend to the guide plate (7). At the top, a support block (8) is fixed to the top of the two sliding blocks (6) on the same side, a mounting plate (9) is installed on the top of the support block (8) by bolts, a clamping plate (10) is fixed on the top of the mounting plate (9), and an arc clamping assembly (11) is arranged on the top of the two mounting plates (9). A first hydraulic cylinder (12) is fixed to the top inner wall of the base (1), a first rack (13) is fixed to the ejection end of the first hydraulic cylinder (12), and a first gear (14) is fixed to the surface of the bidirectional screw rod (3), and the first gear (14) is meshedly connected with the first rack (13).

2. The hydraulic clamp for a CNC milling machine according to claim 1, characterized in that: The arc-shaped clamping assembly (11) comprises arc-shaped blocks (1101) respectively fixed on the top of the mounting plates (9); two first bearing plates (1102) are fixed on one side wall of the left mounting plate (9); a second bearing plate (1103) is fixed on one side wall of the right mounting plate (9); a first clearance groove (1104) adapted to the second bearing plate (1103) is provided on the top of the left mounting plate (9); and two second clearance grooves (1105) adapted to the first bearing plate (1102) are provided on the top of the right mounting plate (9).

3. The hydraulic clamp for a CNC milling machine according to claim 2, characterized in that: A non-slip rubber pad (1106) matching the shape of the arc-shaped block (1101) is fixed to one side wall of the arc-shaped block (1101).

4. The hydraulic clamp for a CNC milling machine according to claim 1, characterized in that: The top of the guide plate (7) is provided with four through slots (15) adapted to the sliding blocks (6), two elastic cloths (16) are fixed inside the through slots (15), and the other ends of the elastic cloths (16) are respectively fixedly connected to the corresponding sliding blocks (6).

5. The hydraulic clamp for a CNC milling machine according to claim 1, characterized in that: Two mounting blocks (17) are fixed to both side walls of the base (1), and mounting holes are provided on the tops of the mounting blocks (17).

6. The hydraulic clamp for a CNC milling machine according to claim 1, characterized in that: Anti-slip convex strips (18) are fixed at equal distances on one side wall of the two clamping plates (10).

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