Special-shaped clamp

Abstract

The special-shaped clamp comprises a chuck body, the two ends of the chuck body are the first end and the second end respectively, a plurality of clamping petals are distributed at the first end in the circumferential direction, an open seam extending in the axial direction is formed between every two adjacent clamping petals, the open seams penetrate through the first end, a clamping groove used for clamping a workpiece is defined by the clamping petals, and the clamping petals are provided with notches and receding grooves; the notch is formed in one side of the clamping piece and communicates with the clamping groove in the radial direction, and the receding groove is formed in the side, close to the second end, of the notch and the clamping groove and communicates with the notch and the clamping groove so as to be used for receding the protruding structure of the workpiece. According to the special-shaped clamp, feeding and clamping can be achieved for the special-shaped workpiece with the protruding structure, and therefore automatic machining of the special-shaped workpiece is achieved.

Description

Technical Field

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

[0002] In the related technology, common lathe fixtures can only automatically load and unload standard straight-axis workpieces. When loading, the workpiece is inserted from one end of the fixture with the clamping flap into the clamping groove of the fixture, and the clamping is achieved by closing the clamping flap. However, workpieces with protruding structures cannot be loaded into conventional fixtures, and such special-shaped workpieces can only be clamped manually; therefore, the clamping of such workpieces has the defects of poor positioning accuracy and inconvenient clamping and unloading. 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 clamp that can load and clamp special-shaped workpieces with protruding structures, thereby realizing automatic processing of special-shaped workpieces and improving processing accuracy and efficiency.

[0004] According to the special-shaped clamp of the embodiment of the utility model, it includes a chuck body, the two ends of the chuck body are respectively a first end and a second end, the first end is provided with a plurality of clamping petals distributed along the circumferential direction, an axially extending slit is formed between adjacent clamping petals, the slit runs through the first end, the clamping petals are enclosed to form a clamping groove for clamping a workpiece, the clamping petals are provided with a notch and an avoidance groove, the notch is provided on one side of the clamping petals and is connected with the clamping groove in the radial direction, the avoidance groove is provided on the notch and the side of the clamping groove close to the second end and is connected with the notch and the clamping groove so as to avoid the protruding structure of the workpiece.

[0005] The special-shaped clamp according to the embodiment of the utility model has at least the following beneficial effects: the special-shaped clamp comprises a chuck body, the first end of the chuck body is provided with a plurality of clamping petals distributed along the circumferential direction, a slit is formed between adjacent clamping petals, the clamping petals are mutually surrounded to form a clamping groove, and the clamping groove clamps or releases the workpiece by the clamping petals approaching and moving away from each other; the clamping petals are provided with a notch connected to one side of the clamping groove, the notch is located on one side of the radial direction of the clamping groove, and an avoidance groove is further provided on a side of the clamping groove and the notch close to the second end, so that when the workpiece is installed, the workpiece can enter the clamping groove radially from the notch, and at the same time, the straight axis portion of the workpiece enters through the notch, and the protruding structure of the workpiece enters through the avoidance groove, and the size of the avoidance groove is larger than the clamping groove; therefore, the special-shaped clamp of the present application can realize loading and clamping of special-shaped workpieces with protruding structures, thereby realizing automated processing of special-shaped workpieces and improving processing accuracy and efficiency.

[0006] According to some embodiments of the present invention, the notch gradually opens from a side close to the axis of the chuck body to a side away from the axis.

[0007] According to some embodiments of the present invention, a positioning structure is further included. The positioning structure is located on a side of the avoidance groove close to the second end and is used to locate the axial position of the end of the workpiece.

[0008] According to some embodiments of the present utility model, the positioning structure includes a guide surface, and the guide surface is arranged at the notch of the avoidance groove to guide the end of the workpiece.

[0009] According to some embodiments of the utility model, the positioning structure is a positioning assembly, which includes a positioning piece and a locking piece. The positioning piece is arranged in the avoidance groove, and the locking piece connects the positioning piece and the clamping flap and is used to lock the positioning piece and the clamping flap.

[0010] According to some embodiments of the utility model, a mounting hole is opened on a side of the clamping flap opposite to the avoidance groove, the mounting hole is connected to the avoidance groove, and the positioning piece is inserted into the mounting hole.

[0011] According to some embodiments of the utility model, the positioning member includes a positioning portion and a limiting portion which are connected to each other, the positioning portion is used to locate the axial position of the end of the workpiece, and the limiting portion and the guide surface are respectively arranged on both sides of the positioning portion, a first abutting surface is arranged on the side of the limiting portion close to the guide surface, and a second abutting surface is arranged on the side of the clamping flap away from the notch, and when the positioning member is inserted into the mounting hole, the first abutting surface abuts and fits with the second abutting surface.

[0012] According to some embodiments of the present invention, a threaded hole is formed on an end surface of the first end away from the second end. The threaded hole is used to install a locking member and is connected to the installation hole.

[0013] According to some embodiments of the present invention, a receiving groove is provided on a side of the limiting portion away from the second end. The receiving groove is arranged toward the threaded hole and is used to receive an end portion of the locking member.

[0014] According to some embodiments of the utility model, the clamp includes a cylindrical portion and a conical portion, the conical portion is arranged at an end of the cylindrical portion away from the first end, the outer diameter of the conical portion is larger than the cylindrical portion, and the notch and the avoidance groove are both opened in the cylindrical portion.

[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 A side view of one embodiment of the special-shaped fixture and workpiece of the utility model;

[0018] Figure 2 for Figure 1A structural schematic diagram of the special-shaped fixture from another perspective shown in FIG.

[0019] Figure 3 for Figure 1 A schematic diagram of the structure of the special-shaped fixture from a third perspective shown in FIG.

[0020] Figure 4 for Figure 1 Schematic diagram of the structure of the workpiece and the positioning parts in the special-shaped fixture shown in .

[0021] Reference numerals:

[0022] The chuck body 100; the first end 101; the second end 102; the cylindrical portion 103; the tapered portion 104; the clamping flap 110; the slit 120; the clamping groove 130; the notch 140; the avoidance groove 150; the mounting hole 160; the second abutting surface 170; the threaded hole 180; the positioning member 200; the positioning portion 210; the guide surface 211; the limiting portion 220; the first abutting surface 221; the accommodating groove 222; the workpiece 300; the protruding structure 310; the straight shaft portion 320. DETAILED DESCRIPTION

[0023] 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.

[0024] 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.

[0025] 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.

[0026] 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.

[0027] 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.

[0028] Reference below Figures 1 to 4 The special-shaped clamp according to the embodiment of the utility model is described.

[0029] like Figure 1 to Figure 2 As shown, the special-shaped clamp according to the embodiment of the utility model includes a chuck body 100, the two ends of the chuck body 100 are respectively a first end 101 and a second end 102, the first end 101 is provided with a plurality of clamping petals 110 distributed along the circumferential direction, and an axially extending slit 120 is formed between adjacent clamping petals 110, the slit 120 passes through the first end 101, and the clamping petals 110 are enclosed to form a clamping groove 130 for clamping a workpiece 300, the clamping petals 110 are provided with a notch 140 and an avoidance groove 150, the notch 140 is provided on one side of the clamping petal 110, and is connected with the clamping groove 130 in the radial direction, the avoidance groove 150 is provided on the notch 140 and the clamping groove 130 on one side close to the second end 102, and is connected with the notch 140 and the clamping groove 130, so as to avoid the protruding structure 310 of the workpiece 300.

[0030] It can be understood that this special-shaped clamp includes a chuck body 100, and a first end 101 of the chuck body 100 is provided with a plurality of clamping petals 110 distributed along the circumferential direction, and a slit 120 is formed between adjacent clamping petals 110, and the clamping petals 110 are mutually surrounded to form a clamping groove 130, and the clamping groove 130 is clamped or released on the workpiece 300 by the clamping petals 110 approaching or moving away; the clamping petals 110 are provided with a notch 140 connected to one side of the clamping groove 130, and the notch 140 is located on one side of the radial direction of the clamping groove 130, and the notch 140 is close to the first end 101 of the clamping groove 130. An avoidance groove 150 is also provided on one side of the two ends 102. Therefore, when the workpiece 300 is installed, the workpiece 300 can enter the clamping groove 130 radially from the notch 140. At the same time, the straight axis portion 320 of the workpiece 300 enters through the notch 140, and the raised structure 310 of the workpiece 300 enters through the avoidance groove 150. The size of the avoidance groove 150 is larger than the clamping groove 130. Therefore, the special-shaped clamp of the present application can realize loading and clamping of the special-shaped workpiece 300 with the raised structure 310, thereby realizing the automated processing of the special-shaped workpiece 300 and improving the processing accuracy and efficiency.

[0031] The irregularly shaped workpiece 300 includes a straight shaft portion 320 and a protruding structure 310 located at one end of the straight shaft portion 320 . The clamping groove 130 of the fixture clamps the straight shaft portion 320 , and the avoiding groove 150 is used to avoid the protruding structure 310 .

[0032] It is understandable that the notch 140 gradually opens from a side close to the axis of the chuck body 100 to a side away from the axis. Figures 2 to 3 As shown, in this embodiment, the opening of the notch 140 gradually increases from the side close to the axis of the chuck body 100 to the side away from the axis, so it is convenient for the workpiece 300 to enter and move to the position of the clamping groove 130 through the notch 140, thereby reducing the collision between the workpiece 300 and the fixture and reducing the defective rate of the workpiece 300.

[0033] It is understandable that a positioning structure is also included, which is located on one side of the avoidance groove 150 close to the second end 102 and is used to locate the end of the workpiece 300 in the axial direction. Figures 1 to 4 As shown, in this embodiment, the special-shaped clamp further includes a positioning structure, and the positioning structure is provided on one side of the avoidance groove 150 close to the second end 102, so as to achieve positioning of the workpiece 300 on the axis.

[0034] It should be understood that such a positioning structure may be a structure provided on the chuck body 100 , or a structure provided on a component provided on the chuck body 100 .

[0035] It is understandable that the positioning structure includes a guide surface 211, and the guide surface 211 is provided at the notch of the avoidance groove 150 to guide the end of the workpiece 300. Figure 4 As shown, in this embodiment, the positioning structure includes a guide surface 211 located at the notch of the avoidance groove 150. The setting of the guide surface 211 can guide the position of the workpiece 300 on the axis while reducing the collision between the workpiece 300 and the positioning structure.

[0036] It can be understood that the positioning structure is a positioning assembly, which includes a positioning member 200 and a locking member. The positioning member 200 is arranged in the avoidance groove 150, and the locking member connects the positioning member 200 and the clamping flap 110 and is used to lock the positioning member 200 and the clamping flap 110. For example, Figures 1 to 4 As shown, in this embodiment, the positioning structure includes a positioning member 200 and a locking member, the guide surface 211 is provided on the positioning member 200 , and the locking member connects and locks the positioning member 200 and the clamping flap 110 , thereby achieving the fixation of the positioning member 200 .

[0037] It is understandable that a mounting hole 160 is provided on one side of the clip 110 opposite to the avoidance groove 150, the mounting hole 160 is connected to the avoidance groove 150, and the positioning member 200 is inserted into the mounting hole 160. Figure 3 As shown, in this embodiment, a mounting hole 160 connected to the avoidance groove 150 is opened on the side of the clamping flap 110 away from the notch 140, and the positioning member 200 is inserted into the mounting hole 160, so that at least part of the positioning member 200 is located in the avoidance groove 150 to achieve positioning of the workpiece 300.

[0038] It can be understood that the positioning member 200 includes a positioning portion 210 and a limiting portion 220 connected to each other. The positioning portion 210 is used to locate the axial position of the end of the workpiece 300, and the limiting portion 220 and the guide surface 211 are respectively provided on both sides of the positioning portion 210. The limiting portion 220 is provided with a first abutting surface 221 on the side close to the guide surface 211, and the second abutting surface 170 is provided on the side of the clip 110 away from the notch 140. When the positioning member 200 is inserted into the mounting hole 160, the first abutting surface 221 abuts against the second abutting surface 170. For example, Figure 3 to Figure 4 As shown, in this embodiment, when the positioning portion 210 is inserted into the mounting hole 160, the first abutment surface 221 of the limiting portion 220 abuts against the second abutment surface 170 of the clamping flap 110, thereby confirming that the positioning member 200 is installed in place. The positioning portion 210 is located in the avoidance groove 150 and is provided with a guide surface 211, thereby realizing the positioning of the workpiece 300.

[0039] It is understandable that a threaded hole 180 is provided on the end surface of the first end 101 away from the second end 102. The threaded hole 180 is used to install a locking member and is connected to the installation hole 160. Figures 2 to 3 As shown, in this embodiment, a threaded hole 180 is opened on the end surface of the first end 101 away from the second end 102, so that the locking member can be threadedly connected to the clamping flap 110 through the threaded hole 180, and the positioning member 200 is abutted and locked inside the clamping flap 110 through the end of the locking member.

[0040] It is understandable that a receiving groove 222 is provided on a side of the limiting portion 220 away from the second end 102, and the receiving groove 222 is arranged toward the threaded hole 180 and is used to accommodate the end of the locking member. Figure 4 As shown, in this embodiment, a receiving groove 222 is provided on the side of the limiting portion 220 away from the second end 102 and toward the threaded hole 180, so that the locking member can be inserted into the receiving groove 222 after being screwed into the threaded hole 180, thereby preventing the positioning member 200 from shaking during use.

[0041] It can be understood that the clip 110 includes a cylindrical portion 103 and a tapered portion 104, the tapered portion 104 is disposed at an end of the cylindrical portion 103 away from the first end 101, the outer diameter of the tapered portion 104 is larger than the cylindrical portion 103, and the notch 140 and the avoidance groove 150 are both provided in the cylindrical portion 103. Figure 2 As shown, in the present embodiment, the clamping flap 110 includes a cylindrical portion 103 and a tapered portion 104 which are sequentially arranged from far away from the second end 102 to close to the second end 102, the outer diameter of the tapered portion 104 is larger than that of the cylindrical portion 103, and the notch 140 and the avoidance groove 150 are both opened in the cylindrical portion 103, thereby being able to improve the strength of the clamping flap 110, thereby improving the degree of clamping of the workpiece 300 by the fixture.

[0042] 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 fixture, characterized in that: The chuck body comprises a chuck body, wherein the two ends of the chuck body are respectively a first end and a second end, the first end is provided with a plurality of clamping petals distributed along the circumferential direction, an axially extending slit is formed between adjacent clamping petals, the slit runs through the first end, the clamping petals are enclosed to form a clamping groove for clamping a workpiece, the clamping petals are provided with a notch and an avoidance groove, the notch is provided on one side of the clamping petals and is connected with the clamping groove in a radial direction, the avoidance groove is provided on the notch and the side of the clamping groove close to the second end and is connected with the notch and the clamping groove so as to avoid the protruding structure of the workpiece.

2. The special-shaped clamp according to claim 1, characterized in that: The notch gradually opens from a side close to the axis of the chuck body to a side away from the axis.

3. The special-shaped clamp according to claim 1, characterized in that: A positioning structure is also included. The positioning structure is located on one side of the avoidance groove close to the second end and is used to locate the axial position of the end of the workpiece.

4. The special-shaped clamp according to claim 3, characterized in that: The positioning structure comprises a guide surface, and the guide surface is arranged at the notch of the avoidance groove to guide the end of the workpiece.

5. The special-shaped clamp according to claim 4, characterized in that: The positioning structure is a positioning assembly, which includes a positioning member and a locking member. The positioning member is arranged in the avoidance groove, and the locking member connects the positioning member and the clamping flap and is used to lock the positioning member and the clamping flap.

6. The special-shaped clamp according to claim 5, characterized in that: A mounting hole is provided on one side of the clamping flap opposite to the avoidance groove, the mounting hole is connected to the avoidance groove, and the positioning member is inserted into the mounting hole.

7. The special-shaped clamp according to claim 6, characterized in that: The positioning member includes a positioning portion and a limiting portion which are connected to each other, the positioning portion is used to locate the axial position of the end of the workpiece, and the limiting portion and the guide surface are respectively arranged on both sides of the positioning portion, a first abutting surface is arranged on the side of the limiting portion close to the guide surface, and a second abutting surface is arranged on the side of the clamping flap away from the notch, and when the positioning member is inserted into the mounting hole, the first abutting surface abuts and fits with the second abutting surface.

8. The special-shaped clamp according to claim 7, characterized in that: A threaded hole is formed on an end surface of the first end away from the second end. The threaded hole is used to install the locking member and is connected to the installation hole.

9. The special-shaped clamp according to claim 8, characterized in that: A receiving groove is provided on a side of the limiting portion away from the second end. The receiving groove is arranged toward the threaded hole and is used to receive the end of the locking member.

10. The special-shaped clamp according to claim 1, characterized in that: The clamping flap includes a cylindrical portion and a conical portion, the conical portion is arranged at an end of the cylindrical portion away from the first end, the outer diameter of the conical portion is larger than the cylindrical portion, and the notch and the avoidance groove are both opened in the cylindrical portion.

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