Special-shaped chuck

Abstract

The special-shaped chuck comprises a first end and a second end, the first end is provided with a plurality of clamping petals distributed along the circumference, a plurality of slots extending in the axial direction are formed between the adjacent clamping petals, and the slots penetrate through the first end of the special-shaped chuck; the sides, close to the axis of the special-shaped chuck, of the clamping petals are provided with special-shaped notches matched with the special-shaped workpiece in appearance, the multiple special-shaped notches define a mounting groove used for positioning the special-shaped workpiece, and the clamping petals are provided with positioning structures used for positioning the direction when the special-shaped workpiece is clamped. According to the special-shaped chuck, the special-shaped workpiece can be clamped, alignment can be achieved through the positioning structure during clamping, and the workpiece is prevented from being collided and damaged.

Description

Technical Field

[0001] The present application relates to the technical field of machine tool processing, and in particular to a special-shaped chuck. Background Art

[0002] In the related technology, the current lathe spindle fixture can generally only handle standard straight-axis blanks (round bar-shaped workpieces), but cannot be adapted to conventional fixture chucks for special-shaped workpieces. Especially when the existing product blank has an eccentric step and has an eccentric position requirement after processing, there are defects such as unstable clamping, poor positioning accuracy, and inability to achieve automation during clamping. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the present application proposes a special-shaped chuck that can not only clamp special-shaped workpieces, but also achieve alignment through a positioning structure during clamping to avoid collision damage to the workpiece.

[0004] According to the embodiment of the utility model, the special-shaped chuck includes: a first end and a second end, the first end is provided with a plurality of clamping petals distributed along the circumference, and a plurality of slits extending along the axial direction are formed between adjacent clamping petals, the slits pass through the first end of the special-shaped chuck, and a special-shaped notch adapted to the shape of the special-shaped workpiece is provided on the side of the clamping petal close to the axial center line of the special-shaped chuck, and a plurality of special-shaped notches are enclosed to form an installation groove for positioning the special-shaped workpiece, and the clamping petal is provided with a positioning structure for positioning the direction when clamping the special-shaped workpiece.

[0005] The special-shaped chuck according to the embodiment of the utility model has at least the following beneficial effects: the two ends of this special-shaped chuck are respectively a first end and a second end, the first end is provided with a plurality of clamping petals distributed along the circumference, a special-shaped notch is provided on the side of the clamping petal close to the axis line of the special-shaped chuck, the special-shaped notch is adapted to the outer shape of the special-shaped workpiece, the clamping petal is provided with a positioning structure to facilitate the positioning direction when clamping the special-shaped workpiece, so that the installation direction of the special-shaped workpiece is aligned with the direction of the special-shaped notch, thereby clamping the special-shaped workpiece in the installation groove of the clamping petal, and in addition, since a slit extending along the axis line direction of the special-shaped chuck is formed between adjacent clamping petals, the opening and closing of the clamping petals can be better realized; therefore, the special-shaped chuck of the present application can not only clamp special-shaped workpieces, but also can achieve alignment through the positioning structure during clamping, thereby avoiding collision and damage to the workpiece.

[0006] According to some embodiments of the utility model, an arc-shaped notch is further provided on one side of the clamping petal close to the axis line of the special-shaped chuck, and a plurality of arc-shaped notches enclose to form a positioning cavity for positioning the special-shaped workpiece, and the positioning cavity and the mounting groove are located at the first end away from the second end in sequence.

[0007] According to some embodiments of the utility model, the positioning structure includes a positioning portion and a positioning cavity, the positioning portion is provided with two end surfaces both located at the first end away from the second end, the positioning cavity is opened at the bottom of the mounting groove and is smaller in size than the mounting groove, and the positioning cavity and the end surfaces of the two positioning portions at the first end away from the second end are not colinear.

[0008] According to some embodiments of the present invention, the positioning portion is a positioning groove provided on an end surface of the first end away from the second end.

[0009] According to some embodiments of the present invention, the clamping flap is provided with three flaps, and the two positioning parts are respectively located at two different clamping flaps.

[0010] According to some embodiments of the present invention, the special-shaped notch is arc-shaped, and the mounting groove is an elliptical groove eccentric to the axis of the special-shaped chuck.

[0011] According to some embodiments of the present invention, a conical protrusion is provided on the outer periphery of the first end, and the outer diameter of the conical protrusion gradually decreases from an end away from the first end to an end close to the first end.

[0012] According to some embodiments of the present invention, a keyway for preventing rotation is provided on the outer periphery of the second end, and the keyway is parallel to the axis of the special-shaped chuck.

[0013] According to some embodiments of the present invention, an annular boss is provided on the outer periphery of the second end, and the keyway is provided on the annular boss.

[0014] According to some embodiments of the present invention, a through hole is provided at one end of the slit away from the first end.

[0015] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention is further described below with reference to the accompanying drawings and embodiments, wherein:

[0017] Figure 1 It is a structural schematic diagram of one embodiment of the special-shaped chuck of the utility model;

[0018] Figure 2 for Figure 1 A schematic diagram of an end surface of a first end of a special-shaped chuck away from a second end shown in ;

[0019] Figure 3 It is a structural schematic diagram of the special-shaped workpiece in the utility model.

[0020] Reference numerals:

[0021] The first end 100 , the second end 200 , the clamping flap 300 , the irregular notch 310 , the arc notch 320 , the positioning groove 330 , the slit 400 , the through hole 410 , the conical protrusion 500 , the annular boss 600 , the keyway 610 , the irregular workpiece 700 , the eccentric portion 710 , and the cylindrical portion 720 . DETAILED DESCRIPTION

[0022] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0023] In the description of the present application, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0024] In the description of this application, "several" means more than one, "more" means more than two, "greater than", "less than", "exceed", etc. are understood to exclude the number itself, and "above", "below", "within", etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0025] In the description of this application, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in this application based on the specific content of the technical solution.

[0026] In the description of the present application, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0027] Reference below Figures 1 to 3 The special-shaped chuck according to the embodiment of the utility model is described.

[0028] like Figure 1 to Figure 2As shown, the special-shaped chuck according to the embodiment of the utility model includes: a first end 100 and a second end 200, the first end 100 is provided with a plurality of clamping flaps 300 distributed along the circumference, and a plurality of slits 400 extending along the axial direction are formed between adjacent clamping flaps 300, the slits 400 pass through the first end 100 of the special-shaped chuck, and a special-shaped notch 310 adapted to the shape of the special-shaped workpiece 700 is provided on the side of the clamping flap 300 close to the axial center line of the special-shaped chuck, and a plurality of special-shaped notches 310 are enclosed to form an installation groove for positioning the special-shaped workpiece 700, and the clamping flap 300 is provided with a positioning structure for positioning the direction when clamping the special-shaped workpiece 700.

[0029] It can be understood that the two ends of this special-shaped chuck are respectively a first end 100 and a second end 200, and the first end 100 is provided with a plurality of clamping flaps 300 distributed along the circumference, and a special-shaped notch 310 is provided on the side of the clamping flap 300 close to the axis line of the special-shaped chuck, and the special-shaped notch 310 is adapted to the outer shape of the special-shaped workpiece 700, and the clamping flap 300 is provided with a positioning structure to facilitate the positioning direction when clamping the special-shaped workpiece 700, so that the installation direction of the special-shaped workpiece 700 is aligned with the direction of the special-shaped notch 310, thereby clamping the special-shaped workpiece 700 in the installation groove of the clamping flap 300, and in addition, since a slit 400 extending along the axis line direction of the special-shaped chuck is formed between adjacent clamping flaps 300, the opening and closing of the clamping flap 300 can be better realized; therefore, the special-shaped chuck of the present application can not only clamp the special-shaped workpiece 700, but also can achieve alignment through the positioning structure during clamping to avoid collision and damage to the workpiece.

[0030] It is understandable that the side of the clamping flap 300 close to the axis of the special-shaped chuck is also provided with an arc-shaped notch 320, and the plurality of arc-shaped notches 320 enclose a positioning cavity for positioning the special-shaped workpiece 700, and the positioning cavity and the mounting groove are located at the first end 100 away from the second end 200 in sequence. Figure 1 to Figure 2 As shown, in this embodiment, an arc-shaped notch 320 is provided on the side of the clamp 300 close to the axis center line, and a plurality of arc-shaped notches 320 form a positioning cavity, which is located on the side of the mounting groove close to the second end 200. Therefore, the positioning cavity and the mounting groove are respectively used to position different parts of the special-shaped workpiece 700.

[0031] Specifically, Figure 3 The mounting groove is used to position the eccentric portion 710 of the special-shaped workpiece 700 , and the positioning cavity is used to position the cylindrical portion 720 of the special-shaped workpiece 700 .

[0032] It can be understood that the positioning structure includes a positioning portion and a positioning cavity, the positioning portion is provided with two and both are located at the end surface of the first end 100 away from the second end 200, the positioning cavity is opened at the bottom of the installation groove and is smaller than the installation groove, and the positioning cavity and the two positioning portions are not colinear at the end surface of the first end 100 away from the second end 200. For example, Figures 1 to 3As shown, in this embodiment, the positioning structure includes a positioning cavity and two positioning parts. The two positioning parts are both arranged on the end surface of the first end 100 away from the second end 200, and are not colinear with the positioning cavity on the end surface of the first end 100 away from the second end 200. According to the non-colinear positioning cavity and the two positioning parts, the direction of the installation groove can be determined, thereby confirming the installation direction of the special-shaped workpiece 700, and then corresponding to the direction of the installation groove to avoid collision of the workpiece as much as possible.

[0033] It should be understood that the positioning cavity and the two positioning portions can be confirmed by visual sensing or infrared sensing devices, thereby confirming the direction of the installation slot.

[0034] It can be understood that the positioning portion is a positioning groove 330 provided on the end surface of the first end 100 away from the second end 200. Figure 1 to Figure 2 As shown, in this embodiment, the positioning part is provided in the positioning groove 330 on the end surface of the first end 100 away from the second end 200. It should be understood that in some other embodiments, the positioning part can also be a positioning structure and a positioning component provided on the end surface of the first end 100 away from the second end 200, such as a screw, etc., or even two marks made by a marker.

[0035] It can be understood that the clamping flap 300 has three flaps, and the two positioning parts are respectively located in two different clamping flaps 300. Figure 1 to Figure 2 As shown, in this embodiment, since the degree of opening and closing of the special-shaped chuck cannot be ensured to be completely consistent each time, two positioning parts on different clamping petals 300 are selected to serve as mutual reference to improve the identification and positioning accuracy, and the other two positioning parts cooperate with the positioning cavity to realize the positioning of the end face of the first end 100 of the chuck, thereby improving the efficiency and accuracy of clamping.

[0036] It can be understood that the special-shaped notch 310 is arc-shaped, and the mounting groove is an elliptical groove eccentric to the axis of the special-shaped chuck. Figure 1 to Figure 2 As shown, in this embodiment, the mounting groove is an elliptical groove, and the elliptical groove is eccentrically opened relative to the axis of the special-shaped clamp, so a corresponding positioning structure is required for positioning to prevent collision during the clamping process.

[0037] It can be understood that the first end 100 is provided with a conical protrusion 500 on its outer periphery, and the outer diameter of the conical protrusion 500 gradually decreases from an end away from the first end 100 to an end close to the first end 100. Figure 1 to Figure 2 As shown, in this embodiment, the first end 100 of the special-shaped chuck is provided with a conical protrusion 500, so that when the special-shaped chuck is used in conjunction with an external sleeve, the clamping petals 300 of the special-shaped chuck can be retracted and opened through the abutment of the conical outer peripheral surface.

[0038] It is understandable that the outer periphery of the second end 200 is provided with a keyway 610 for anti-rotation, and the keyway 610 is parallel to the axis of the special-shaped chuck. Figure 1 to Figure 2 As shown, in this embodiment, by providing a keyway 610 on the outer periphery of the second end 200, the special-shaped chuck can be rotated together with the lathe spindle during use, thereby preventing the special-shaped chuck from rotating on its own.

[0039] It can be understood that the outer periphery of the second end 200 is provided with an annular boss 600, and the key slot 610 is opened on the annular boss 600. Figure 1 to Figure 2 As shown, in this embodiment, the key groove 610 is provided on the annular boss 600 with a thicker thickness at the second end 200 , thereby improving the strength of the position where the key groove 610 is provided.

[0040] It is understandable that the end of the slit 400 away from the first end 100 is provided with a through hole 410. Figure 1 to Figure 2 As shown, in this embodiment, a through hole 410 is provided at one end of the slit 400 away from the first end 100 , so that the clamping flap 300 has sufficient elasticity to facilitate the opening and closing of the clamping flap 300 .

[0041] The embodiments of the present application are described in detail above in conjunction with the accompanying drawings, but the present application is not limited to the above embodiments. Various changes can be made within the knowledge of ordinary technicians in the relevant technical field without departing from the purpose of the present application. In addition, the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

Claims

1. Special-shaped chuck, characterized in that: It comprises a first end and a second end, wherein the first end is provided with a plurality of clamping petals distributed along the circumference, and a plurality of slits extending along the axial direction are formed between adjacent clamping petals, wherein the slits penetrate the first end of the special-shaped chuck, and a side of the clamping petal close to the axial center line of the special-shaped chuck is provided with a special-shaped notch adapted to the shape of the special-shaped workpiece, and a plurality of special-shaped notches are enclosed to form an installation groove for positioning the special-shaped workpiece, and the clamping petal is provided with a positioning structure for positioning the direction when clamping the special-shaped workpiece.

2. The special-shaped chuck according to claim 1, characterized in that: An arc-shaped notch is further provided on one side of the clamping petal close to the axis of the special-shaped chuck, and a plurality of arc-shaped notches enclose a positioning cavity for positioning the special-shaped workpiece, and the positioning cavity and the mounting groove are located at the first end which is successively away from the second end.

3. The special-shaped chuck according to claim 2, characterized in that: The positioning structure includes a positioning portion and a positioning cavity. The positioning cavity is opened at the bottom of the mounting groove and is smaller than the mounting groove. The positioning portion is provided with two end surfaces, both of which are located at the first end away from the second end. The positioning cavity and the two positioning portions are not colinear at the end surfaces of the first end away from the second end.

4. The special-shaped chuck according to claim 3, characterized in that: The positioning portion is a positioning groove provided on an end surface of the first end away from the second end.

5. The special-shaped chuck according to claim 3, characterized in that: The clamping flap is provided with three flaps, and the two positioning parts are respectively located at two different clamping flaps.

6. The special-shaped chuck according to claim 1, characterized in that: The special-shaped notch is arc-shaped, and the mounting groove is an elliptical groove eccentric to the axis of the special-shaped chuck.

7. The special-shaped chuck according to claim 1, characterized in that: A conical protrusion is disposed on the outer periphery of the first end, and the outer diameter of the conical protrusion gradually decreases from an end away from the first end to an end close to the first end.

8. The special-shaped chuck according to claim 1, characterized in that: The outer periphery of the second end is provided with a keyway for anti-rotation, and the keyway is parallel to the axis of the special-shaped chuck.

9. The special-shaped chuck according to claim 8, characterized in that: An annular boss is disposed on the outer periphery of the second end, and the keyway is formed on the annular boss.

10. The special-shaped chuck according to claim 1, characterized in that: A through hole is provided at one end of the slit away from the first end.

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