Multi-claw linkage chuck

Abstract

The utility model discloses a multi-jaw linkage chuck, which relates to the technical field of chucks, is used for solving the problem that the clamping effect of the existing chuck on polygonal workpieces, special-shaped workpieces or irregular workpieces is poorer, and comprises a chuck body, at least six jaw slideways are arranged on the chuck body, and the jaw slideways are arranged on the chuck body. A clamping jaw slide way is arranged on the chuck body, a clamping jaw slide seat is arranged on the clamping jaw slide way, a clamping jaw is arranged on the clamping jaw slide seat, a driving disc and a wire coiling cover plate are arranged in the chuck body, a plurality of lengthening rods with linkage bevel gears are arranged between the driving disc and the wire coiling cover plate, and the bottom of the driving disc is matched with the linkage bevel gears of the lengthening rods. The lengthened rod is in transmission connection with the transmission disc, the transmission disc is in transmission connection with the clamping jaw sliding base through cooperation of the coiled wires, compared with an existing chuck, the chuck is provided with more clamping jaws, the clamping jaws slide smoothly, the linkage effect is good, and polygonal workpieces, special-shaped workpieces or irregular workpieces can be well clamped.

Description

Technical Field

[0001] The utility model relates to the technical field of chucks, in particular to a multi-claw linkage chuck. Background Art

[0002] The chuck is a mechanical device used to clamp the workpiece on the machine tool. It is a machine tool accessory that clamps and positions the workpiece by radial movement of the movable jaws evenly distributed on the chuck body.

[0003] Traditional chucks are mostly three-jaw chucks and four-jaw chucks. For polygonal workpieces and irregular workpieces, three-jaw and four-jaw chucks are difficult to meet the clamping stability requirements (insufficient clamping torque), and the clamping stability is poor, and a good clamping effect cannot be achieved. In view of the shortcomings of the above scheme in actual production and implementation, it is revised and improved. At the same time, in the spirit and concept of seeking excellence, with the assistance of professional knowledge and experience, and after many ingenuity and experiments, the utility model is created, and a multi-jaw linkage chuck is provided to solve the problem that the existing chuck has a poor clamping effect on polygonal workpieces, special-shaped or irregular workpieces. Utility Model Content

[0004] The utility model aims to provide a multi-claw linkage chuck, which is used to solve the problem that the existing chuck has a poor holding effect on polygonal workpieces, special-shaped or irregular workpieces.

[0005] The technical solution of the utility model is achieved in this way:

[0006] A multi-claw linkage chuck comprises a chuck body, at least six claw slides are arranged on the chuck body, a claw slide seat is arranged on the claw slide, a claw is arranged on the claw slide seat, a transmission disk and a wire winding cover plate are arranged inside the chuck body, a plurality of extension rods with linkage bevel gears are arranged between the transmission disk and the wire winding cover plate, the bottom of the transmission disk cooperates with the linkage bevel gear of the extension rod, the extension rod is connected with the transmission disk in transmission, a wire winding is arranged on the top of the transmission disk, the bottom of each claw slide seat cooperates with the wire winding, and the transmission disk and the claw slide seat are connected in transmission by the cooperation of the wire winding.

[0007] As a preferred embodiment, the side surface of the chuck body is provided with a plurality of rod grooves for the extension rods to pass through.

[0008] As a preferred embodiment, it includes a positioning pin shaft, and the extension rod is provided with a positioning groove that matches the positioning groove.

[0009] As a preferred embodiment, the cross-section of the claw slide along the vertical direction is in the shape of an "I", and the claw slide seat matches the shape of the claw slide, and the claw slide can limit the claw slide.

[0010] As a preferred embodiment, six claw slideways are provided, and the angle between adjacent claw slideways is 60°.

[0011] As a preferred embodiment, eight claw slideways are provided, and the angle between adjacent claw slideways is 45°.

[0012] As a preferred embodiment, the chuck body is integrally cast using ductile iron.

[0013] As a preferred embodiment, the surface of the claw and the extension rod are both subjected to high-frequency quenching and grinding treatments.

[0014] Description of the structure principle of multi-claw linkage chuck:

[0015] The chuck body is integrally cast from ductile iron, with good structural strength and high wear resistance.

[0016] The jaw slideway is processed by a precision machining center with high precision and good centering effect.

[0017] The extension rod is turned by the chuck wrench, which drives the linked bevel gear to rotate, and the linked bevel gear drives the transmission disk to rotate. The disk wire and the claw slide seat are engaged with the plane thread to realize the change of the position of the claw slide seat and the claw, thereby realizing the clamping and loosening of the multi-jaw linked chuck.

[0018] The surface of the jaws is subjected to high-frequency quenching and then grinding, with a surface hardness of HRC45° or above. It has high dimensional accuracy and can effectively prevent bumps and wear.

[0019] The extension rod and the coiled wire are subjected to high-frequency quenching treatment to prevent deformation or breakage caused by excessive torque or long-term use.

[0020] The extension rod can lock any one of them, and multiple claws can be locked centripetally at the same time. The multi-claw linkage chuck can be customized according to customer needs.

[0021] The technical difficulty of this device lies in the complexity of processing the chuck wire. Since it is necessary to achieve smooth movement of multiple claws, a five-axis machine tool is used to process the wire to ensure the accuracy of the chuck.

[0022] Compared with traditional chucks, in order to prevent noise, jamming and other problems caused by uneven force on each jaw when multiple jaws move, we designed a wire cover to pre-tighten each jaw with screws to ensure consistent meshing clearance between each jaw and the wire.

[0023] Our current technology allows us to produce six-jaw, eight-jaw and multi-jaw chucks according to the complexity of the customer's workpiece and the clamping method to meet the customer's requirements.

[0024] Compared with existing chucks, this chuck has more jaws, and each jaw slides smoothly and has a good linkage effect. It can clamp polygonal workpieces, special-shaped or irregular workpieces very well, solving the problem that existing chucks have poor holding effect on polygonal workpieces, special-shaped or irregular workpieces. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0026] Figure 1 It is a structural schematic diagram of an implementation method of the utility model;

[0027] Figure 2 It is a schematic diagram of the internal partial structure of the utility model.

[0028] In the figure, 1-claw; 2-claw slide; 3-claw slide; 4-rod groove; 5-chuck body; 6-thread cover plate; 7-linked bevel gear; 8-thread; 9-transmission plate; 10-locating pin shaft; 11-extension rod. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0030] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0031] In addition, the descriptions of "first", "second", etc. in the present invention are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features.

[0032] In the description of the embodiments, unless otherwise clearly specified and limited, the terms "disposed", "connected" and the like 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 it can be connected through an intermediate medium, or it can be a communication between 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.

[0033] like Figure 1 , Figure 2 As shown, a multi-jaw linkage chuck comprises a chuck body 5, at least six claw slideways 3 are arranged on the chuck body 5, a claw slide seat 2 is arranged on the claw slide 3, a claw 1 is arranged on the claw slide seat 2, a transmission disk 9 and a wire coil cover plate 6 are arranged inside the chuck body 5, a plurality of extension rods 11 with linkage bevel gears 7 are arranged between the transmission disk 9 and the wire coil cover plate 6, the bottom of the transmission disk cooperates with the linkage bevel gear 7 of the extension rod 11, the extension rod 11 is transmission-connected with the transmission disk 9, a wire coil 8 is arranged on the top of the transmission disk, the bottom of each claw slide seat 2 cooperates with the wire coil 8, and the transmission disk 9 and the claw slide seat 2 are transmission-connected by the cooperation of the wire coil 8.

[0034] As a preferred embodiment, a plurality of rod grooves 4 for the extension rods 11 to pass through are provided on the side of the chuck body 5 .

[0035] As a preferred embodiment, it includes a positioning pin shaft 10, and the extension rod 11 is provided with a positioning groove that matches the positioning groove.

[0036] As a preferred embodiment, the cross-section of the claw slide 3 along the vertical direction is in the shape of an "I" character, and the claw slide seat 2 is matched with the shape of the claw slide 3, and the claw slide 3 can limit the claw slide 3.

[0037] As a preferred embodiment, six claw slideways 3 are provided, and the angle between adjacent claw slideways 3 is 60°.

[0038] As a preferred embodiment, eight claw slideways 3 are provided, and the angle between adjacent claw slideways 3 is 45°.

[0039] As a preferred embodiment, the chuck body 5 is integrally cast with ductile iron.

[0040] As a preferred embodiment, the surface of the claw 1 and the extension rod 11 are both subjected to high-frequency quenching and grinding treatments.

[0041] Description of the structure principle of multi-claw linkage chuck:

[0042] The chuck body 5 is integrally cast from ductile iron, and has good structural strength and high wear resistance.

[0043] The slide groove of the clamping jaw 1 is processed by a precision machining center, with high precision and good centering effect.

[0044] By screwing the extension rod 11 with the chuck wrench, the linkage bevel gear 7 is driven to rotate, and the linkage bevel gear 7 drives the transmission plate 9 to rotate. The coil wire 8 is engaged with the claw slide 2 through the flat thread to realize the change of the position of the claw slide 2 and the claw 1, thereby realizing the clamping and loosening action of the multi-jaw linkage chuck.

[0045] The surface of the jaw 1 is subjected to high-frequency quenching and then grinding, with a surface hardness of HRC45° or above. It has high dimensional accuracy and can effectively prevent knocks and wear.

[0046] The extension rod 11 and the coiled wire 8 are subjected to high frequency quenching treatment to prevent deformation or breakage caused by excessive torque or long-term use.

[0047] The extension rod 11 can lock any one of them, and the multiple claws can be locked centripetally at the same time. The multi-claw linkage chuck can be customized according to customer needs.

[0048] The technical difficulty of this device lies in the complexity of processing the chuck wire 8. Since it is necessary to realize smooth movement of multiple claws, a five-axis machine tool is used to process the wire 8 to ensure the accuracy of the chuck.

[0049] Compared with the traditional chuck, in order to prevent the noise, jamming and other problems caused by uneven force on each claw 1 when the multiple claws 1 move, we designed a wire cover plate 6 to pre-tighten each claw with screws to ensure that the meshing clearance between each claw 1 and the wire 8 is consistent.

[0050] Our current technology allows us to produce six-jaw, eight-jaw and multi-jaw chucks according to the complexity of the customer's workpiece and the clamping method to meet the customer's requirements.

[0051] Compared with existing chucks, this chuck has more jaws, and each jaw slides smoothly and has a good linkage effect. It can clamp polygonal workpieces, special-shaped or irregular workpieces very well, solving the problem that existing chucks have poor holding effect on polygonal workpieces, special-shaped or irregular workpieces.

[0052] The above is only a preferred embodiment of the utility model, and is not intended to limit the utility model. 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. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in the field to implement; when the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the utility model.

Claims

1. A multi-claw linkage chuck, characterized in that: It includes a chuck body, at least six claw slides are arranged on the chuck body, a claw slide seat is arranged on the claw slide, a claw is arranged on the claw slide seat, a transmission disk and a wire coiling cover plate are arranged inside the chuck body, a plurality of extension rods with linked bevel gears are arranged between the transmission disk and the wire coiling cover plate, the bottom of the transmission disk cooperates with the linked bevel gears of the extension rods, the extension rods are connected with the transmission disk in transmission, a wire coil is arranged on the top of the transmission disk, the bottom of each claw slide seat cooperates with the wire coil, and the transmission disk and the claw slide seat are connected in transmission by the cooperation of the wire coil.

2. A multi-jaw linkage chuck according to claim 1, characterized in that: The side surface of the chuck body is provided with a plurality of rod grooves for the extension rods to pass through.

3. A multi-jaw linkage chuck according to claim 1, characterized in that: It comprises a positioning pin shaft, and the extension rod is provided with a positioning groove which matches with the positioning groove.

4. A multi-jaw linkage chuck according to claim 1, characterized in that: The cross section of the claw slideway along the vertical direction is in the shape of an "I", and the claw slide seat matches the shape of the claw slideway.

5. The multi-jaw linkage chuck according to claim 1, characterized in that: There are six claw slideways, and the angle between adjacent claw slideways is 60°.

6. The multi-jaw linkage chuck according to claim 1, characterized in that: There are eight claw slideways, and the angle between adjacent claw slideways is 45°.

7. The multi-jaw linkage chuck according to claim 1, characterized in that: The chuck body is integrally cast with ductile iron.

8. The multi-jaw linkage chuck according to claim 1, characterized in that: The surface of the clamping claw and the extension rod are both subjected to high-frequency quenching and grinding treatments.

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