Hydraulic clamping jaw expanding mechanism

Abstract

The utility model relates to the technical field of hydraulic clamping jaws, and discloses a hydraulic clamping jaw expanding mechanism which comprises a base, two first connecting columns are arranged on the bottom face of the base, a sliding groove is formed in the upper surface of the base, a sliding block is arranged in the sliding groove, a threaded through hole is formed in the middle of the sliding block in a penetrating mode and parallel to the sliding groove, and a rotating rod is arranged in the threaded through hole in a penetrating mode. One end of the base is open, a sealing cover is detachably arranged at the end of the base, a second mounting hole is formed in the middle of the sealing cover in a penetrating mode, the other end of the rotating rod is rotationally arranged in the second mounting hole, a connector is arranged at the other end of the rotating rod, a connecting insertion hole is formed in the upper end of the sliding block, and a clamping jaw body is inserted into the connecting insertion hole. The two corresponding sides of the clamping jaw body are provided with an inwards-concave arc-shaped face and an outwards-convex arc-shaped face respectively. The sliding block moves in the sliding groove, so that the adjustable range of the moving distance of the hydraulic clamping jaw is further expanded, the usable range of machining equipment is widened, and the production cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic clamping claws, in particular to a hydraulic clamping claw expansion mechanism. Background Art

[0002] A hydraulic chuck is a clamp controlled by a hydraulic system and used to clamp workpieces on the spindle of a CNC lathe.

[0003] Chinese patent CN218591860U discloses a hydraulic claw structure, including multiple single claw mechanisms, each of which includes a claw body arranged on a claw seat, and a pressure column is arranged on the claw body; the utility model discloses a hydraulic claw structure, which can achieve the clamping and fixing of the workpiece to be processed through the mutual cooperation of multiple single claw mechanisms; in addition, each single claw mechanism of the utility model can achieve the internal tension and fixing of the cylindrical material through the setting of the pressure column, avoiding the clamping damage of the claw to the outer surface of the part. The above technical solution is only applicable to the internal clamping of cylindrical materials, and the position of the claw body is small in adjustability and the scope of application is small. Utility Model Content

[0004] To solve the above problems, the utility model adopts the following technical solutions.

[0005] A hydraulic claw expansion mechanism comprises a chuck body and a claw, a stack spring and a hydraulic cylinder are arranged in the chuck body, and also comprises a base, the bottom surface of the base is provided with two connecting columns 1, the upper surface of the base is provided with a slide groove, a slider is provided in the slide groove, the middle part of the slider is parallel to the slide groove and penetrates a threaded through hole, a rotating rod is passed through the threaded through hole, an external thread is arranged in the middle part of the rotating rod, a mounting hole 1 is arranged on the inner side of one end of the base, one end of the rotating rod is rotatably arranged in the mounting hole 1, the other end of the base is open and the end is detachably provided with a sealing cover, the middle part of the sealing cover is penetrated by a mounting hole 2, and the other end of the rotating rod is rotatably arranged in the mounting hole 2, the other end of the rotating rod is provided with a connecting head, the upper end of the slider is provided with a connecting socket, a claw body is inserted in the connecting socket, and the corresponding two sides on the claw body are respectively an inner concave arc surface and an outer convex arc surface.

[0006] Preferably, the connecting socket is a hexagonal socket.

[0007] Preferably, the cover includes a cover body, connecting plates are provided on the left and right sides of the cover body, through holes are provided on the connecting plates, a mounting hole three is provided on the side of the base, an inner thread is provided on the inner wall of the mounting hole three, and the cover is threadedly connected to the mounting hole three by bolts passing through the through holes.

[0008] Preferably, the second mounting hole includes an upper section, a middle section and a lower section, the lower section is a through hole adapted to the outer diameter of the rotating rod, the middle section is a hexagonal hole, the upper section is a circular hole and slot holes are provided on the side of the cover body corresponding to the positions of the upper section and the middle section.

[0009] Preferably, the connector includes a hexagonal column connecting column 2, which is located in the upper section and the middle section. The outer side of the connecting column 2 is sleeved with a sleeve whose outer and inner walls are both hexagonal, and each surface of the outer wall of the sleeve is provided with a notch.

[0010] Preferably, a circular ring-shaped magnet is provided at the bottom of the middle section.

[0011] Compared with the prior art, the utility model provides a hydraulic claw expansion mechanism, which has the following beneficial effects:

[0012] The utility model further expands the adjustable range of the hydraulic jaw movement distance by moving the slider in the slide groove, improves the usable range of the processing equipment, and reduces the production cost. At the same time, the corresponding two sides of the jaw body of the utility model are respectively an inner concave arc surface and an outer convex arc surface, which can clamp both columnar parts and cylindrical parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the overall connection and installation of the utility model;

[0014] Figure 2 This is a reference schematic diagram of the hydraulic clamping claw of the utility model;

[0015] Figure 3 for Figure 2 A cross-sectional view of

[0016] Figure 4 It is a three-dimensional schematic diagram of the overall structure of the utility model;

[0017] Figure 5 It is an exploded view of the overall structure of the utility model;

[0018] Figure 6 It is a cross-sectional view of the cover of the utility model. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model; it is obvious that the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the utility model without making creative work are within the scope of protection of the utility model.

[0020] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0021] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "set / connected", "connected", etc. should be understood in a broad sense. For example, "connected" 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 it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. Example

[0022] like Figures 1 to 6As shown, in the present embodiment, a hydraulic jaw expansion mechanism comprises a chuck body and a jaw, a stack spring and a hydraulic cylinder are arranged in the chuck body, and also comprises a base 1, the bottom surface of the base 1 is provided with two connecting columns 2, the upper surface of the base 1 is provided with a slide groove 3, a slider 4 is arranged in the slide groove 3, a threaded through hole 5 is arranged in the middle part of the slider 4 parallel to the slide groove 3, a rotating rod 6 is arranged in the threaded through hole 5, and an external thread is arranged in the middle part of the rotating rod 6, a mounting hole 7 is arranged on the inner side of one end of the base 1, one end of the rotating rod 6 is rotatably arranged in the mounting hole 7, and the other end of the base 1 is open and a cover 8 is detachably arranged at the end, the cover 8 comprises a cover body 8-1, connecting plates 8-2 are arranged on the left and right sides of the cover body 8-1, a through hole is arranged on the connecting plate 8-2, a mounting hole 3 9 is arranged on the side of the base 1, and an internal thread is arranged on the inner wall of the mounting hole 3 9, and the cover 8 is threadedly connected with the mounting hole 3 9 by bolts passing through the through hole. The middle of the cover 8 is provided with a second mounting hole 8-3, which includes an upper section 8-31, a middle section 8-32 and a lower section 8-33. The lower section 8-33 is a through hole that matches the outer diameter of the rotating rod 6, the middle section 8-32 is a hexagonal hole, the upper section 8-31 is a circular hole, and a slot 8-4 is provided at the side of the cover 8-1 corresponding to the upper section 8-31 and the middle section 8-32. The other end of the rotating rod 6 is rotatably arranged in the second mounting hole 8-3, and a connector 10 is provided at the other end of the rotating rod 6. The upper end of the slider 4 is provided with a connecting socket 11. In this embodiment, the connecting socket 11 is a hexagonal hole, and a claw body 12 is inserted into the connecting socket 11. The corresponding two sides of the claw body 12 are respectively a concave arc surface and a convex arc surface. In this embodiment, the connector 10 includes a hexagonal column connecting column 10-1, the connecting column 10-1 is located in the upper section 8-31 and the middle section 8-32, and the outer side of the connecting column 10-1 is sleeved with a sleeve 10-2 whose outer wall and inner wall are both hexagonal, and each surface of the outer wall of the sleeve 10-2 is provided with a notch 10-3. In this embodiment, a circular ring magnet 13 is provided at the bottom of the middle section 8-32. In this embodiment, the upper surface of the base 1 is provided with a scale line at the side of the slide groove 3.

[0023] The working principle of this embodiment is:

[0024] When in use, firstly, the hydraulic claw expansion mechanism is plugged into the claw of the hydraulic disc through the connecting column 1 2 at the bottom of the base 1, and then the claw body 12 is plugged into the connecting socket 11 on the slider 4. When processing a cylindrical part, the convex arc surface of the claw body 12 is facing the inner wall of the cylindrical part, and when processing a cylindrical part, the concave arc surface of the claw body 12 is facing the outer wall of the cylindrical part. After the claw body 12 is connected, when the hydraulic claw is in the minimum position, the position of the slider 4 is adjusted so that the claw is close to the workpiece to be processed. The adjustment method is as follows: the first step is to insert a tool into the notch 10-3, and then pull the sleeve 10-2 outward for a distance, and then use the hexagonal wrench to rotate the sleeve 10-2 to drive the connecting column 2 10-1 to rotate, thereby driving the rotating rod 6 to rotate so that the slider 4 slides in the slide groove 3, thereby adjusting the position, and the scale line is used as a reference during the adjustment to make the positions of each claw the same. After the adjustment is completed, the sleeve 10-2 is pressed so that the bottom of the sleeve 10-2 contacts the annular magnet 13 and is fixed by magnetic attraction.

[0025] Compared with the prior art, the utility model has the following beneficial effects:

[0026] The utility model further expands the adjustable range of the hydraulic jaw movement distance by moving the slider 4 in the slide groove 3, improves the usable range of the processing equipment, and reduces the production cost. At the same time, the corresponding two sides of the jaw body 12 of the utility model are respectively an inner concave arc surface and an outer convex arc surface, which can clamp both cylindrical parts and cylindrical parts.

[0027] The above are only preferred specific implementations of the utility model; however, the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solution and improved ideas of the utility model within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model.

Claims

1. A hydraulic jaw expansion mechanism, comprising a chuck body and a jaw, wherein a stack spring and a hydraulic cylinder are arranged in the chuck body, characterized in that: The invention comprises a base (1), wherein the bottom surface of the base (1) is provided with two connecting columns (2), the upper surface of the base (1) is provided with a slide groove (3), a slider (4) is provided in the slide groove (3), a threaded through hole (5) is provided in the middle of the slider (4) parallel to the slide groove (3), a rotating rod (6) is provided in the threaded through hole (5), an external thread is provided in the middle of the rotating rod (6), a mounting hole (7) is provided on the inner side of one end of the base (1), and one end of the rotating rod (6) is rotatably provided in the mounting hole (7), The other end of the base (1) is open and is detachably provided with a cover (8), a second mounting hole (8-3) is provided through the middle of the cover (8), the other end of the rotating rod (6) is rotatably provided in the second mounting hole (8-3), the other end of the rotating rod (6) is provided with a connector (10), the upper end of the slider (4) is provided with a connecting socket (11), a claw body (12) is inserted into the connecting socket (11), and the corresponding two sides of the claw body (12) are respectively an inwardly concave arc surface and an outwardly convex arc surface.

2. A hydraulic claw expansion mechanism according to claim 1, characterized in that: The connecting socket (11) is a hexagonal socket.

3. A hydraulic claw expansion mechanism according to claim 1, characterized in that: The cover (8) comprises a cover body (8-1), connecting plates (8-2) are arranged on the left and right sides of the cover body (8-1), through holes are arranged on the connecting plates (8-2), a mounting hole three (9) is arranged on the side of the base (1), an inner wall of the mounting hole three (9) is provided with an internal thread, and the cover (8) is threadedly connected to the mounting hole three (9) by bolts passing through the through holes.

4. A hydraulic claw expansion mechanism according to claim 1, characterized in that: The second mounting hole (8-3) comprises an upper section (8-31), a middle section (8-32) and a lower section (8-33); the lower section (8-33) is a through hole adapted to the outer diameter of the rotating rod (6); the middle section (8-32) is a hexagonal hole; the upper section (8-31) is a circular hole; and a slotted hole (8-4) is provided at a position on the side of the cover body (8-1) corresponding to the upper section (8-31) and the middle section (8-32).

5. A hydraulic claw expansion mechanism according to claim 4, characterized in that: The connector (10) comprises a second hexagonal column connecting column (10-1), the second connecting column (10-1) being located in the upper section (8-31) and the middle section (8-32), the outer side of the second connecting column (10-1) being sleeved with a sleeve (10-2) having both an outer wall and an inner wall in a hexagonal shape, and each surface of the outer wall of the sleeve (10-2) being provided with a notch (10-3).

6. A hydraulic claw expansion mechanism according to claim 5, characterized in that: A circular ring-shaped magnet (13) is arranged at the bottom of the middle section (8-32).

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