Back shaft special-shaped eccentric collet for precision automatic lathe

Abstract

The utility model discloses a back shaft special-shaped eccentric collet for a precision automatic lathe, which comprises a first collet handle, a second collet handle, a collet body and a clamping component which are sequentially connected, the first collet handle, the second collet handle, the collet body and the clamping component are sequentially and fixedly connected with one another, and the peripheral walls of the second collet handle, the collet body and the clamping component are respectively provided with a notch groove. A clamping cavity is formed in the lateral wall of the side, away from the chuck body, of the clamping assembly, the shape of the clamping cavity is a polygon, and the notch groove comprises an oval opening groove, a first notch groove, a second notch groove and a third notch groove. The precise adjustment of the eccentric distance is realized, and the production efficiency is greatly improved; due to the arrangement of the opening groove, the collet has certain elasticity when clamping a product, and meanwhile the clamping stability is improved; the special-shaped chuck can meet the requirement for clamping a plurality of special-shaped products which are irregular in shape and different in height.

Description

Technical Field

[0001] This utility model belongs to the field of collet technology, specifically relating to a back-shaft irregular eccentric collet for a Swiss-type machine. Background Technology

[0002] An eccentric collet, as part of a Swiss-type lathe, is a locking device for clamping cutting tools or workpieces. Its design places the workpiece on the support surface of the clamp, and then an eccentric reference surface is installed on the clamp. This reference surface is a special raised surface that allows the clamp to position the workpiece at a certain angle.

[0003] Currently, most Swiss-type lathe collets, such as Figure 6 As shown, the eccentricity is difficult to control when machining eccentric parts, resulting in low production efficiency; the structure design with an opening slot in only one direction can only reduce vibration in one direction during machining, resulting in poor stability; it can only clamp products of one shape or size, which limits its application range.

[0004] Therefore, in order to address the aforementioned technical issues, it is necessary to provide a back-shaft eccentric collet for Swiss-type lathes.

[0005] The information disclosed in this background section is intended only to enhance the understanding of the overall background of this utility model and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Utility Model Content

[0006] The purpose of this invention is to provide a back shaft irregular eccentric collet for Swiss-type lathes, which can solve the problems mentioned in the background art.

[0007] To achieve the above objectives, a specific embodiment of this utility model provides the following technical solution: it includes a first chuck handle, a second chuck handle, a chuck body, and a clamping assembly connected in sequence. The first chuck handle, the second chuck handle, the chuck body, and the clamping assembly are fixedly connected to each other in sequence. The second chuck handle, the chuck body, and the clamping assembly are all machined with notched grooves on their peripheral walls. The clamping assembly has a clamping cavity on the side away from the chuck body. The clamping cavity is polygonal in shape and is eccentric to the center of the clamping assembly.

[0008] In one or more embodiments of this utility model, the notch includes an elliptical opening groove, a first notch, a second notch, and a third notch. The elliptical opening groove and the first notch are formed on the outer wall of the second chuck handle, the second notch is formed on the side wall of the chuck body, and the third notch is formed on the side wall of the clamping assembly.

[0009] In one or more embodiments of this utility model, the outer diameter of the chuck body gradually increases from the second chuck handle to the clamping assembly.

[0010] In one or more embodiments of the present application, the minimum outer diameter of the collet body is greater than the maximum outer diameter of the second collet handle and the clamping assembly.

[0011] In one or more embodiments of the present application, the oval opening groove, the first cutout groove, the second cutout groove and the third cutout groove are each provided with four groups and each group is in communication with each other.

[0012] In one or more embodiments of the present application, the shape of the side wall at both ends of the oval opening groove is U-shaped.

[0013] In one or more embodiments of the present application, one end of the clamping assembly is located on one side of the collet body, and the other end is integrally formed on the inner wall of the collet body.

[0014] In one or more embodiments of the present application, the clamping assembly includes a first clamping block and a second clamping block, and the clamping cavity includes a first cavity and a second cavity.

[0015] In one or more embodiments of the present application, the first cavity is provided on the outer wall of the first clamping block and the second clamping block, the second cavity is provided on one side of the first clamping block located in the first cavity, and the first cavity is in communication with the second cavity.

[0016] In one or more embodiments of the present application, the material of the back shaft special-shaped eccentric cylinder clamp for the center drilling machine is high-carbon alloy tool steel.

[0017] Compared with the prior art, the back shaft special-shaped eccentric cylinder clamp for the center drilling machine realizes precise adjustment of the eccentric distance through the design of the eccentric structure, greatly improves the production efficiency, and the opening groove is provided to make the cylinder clamp have a certain elasticity when clamping the product, and at the same time, the stability of clamping is increased. The special-shaped chuck can meet the clamping of special-shaped products with irregular shape and multiple height surfaces. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed in the following embodiment or prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments described in the present application, and those skilled in the art can obtain other drawings according to these drawings without creating any creative labor.

[0019] Figure 1 It is an embodiment of the structure of the back shaft special-shaped eccentric cylinder clamp for the center drilling machine of the present application.

[0020] Figure 2The utility model discloses a structure main view of back axle special-shaped eccentric cylinder clamp for the heart machine in an embodiment of the utility model,

[0021] Figure 3 The utility model discloses a structure sectional view of back axle special-shaped eccentric cylinder clamp for the heart machine in an embodiment of the utility model,

[0022] Figure 4 The utility model discloses a use state diagram of back axle special-shaped eccentric cylinder clamp for the heart machine in an embodiment of the utility model,

[0023] Figure 5 The utility model discloses a special-shaped eccentric workpiece finished product example diagram of back axle special-shaped eccentric cylinder clamp for the heart machine in an embodiment of the utility model,

[0024] Figure 6 It is the structure schematic diagram of cylinder clamp in prior art.

[0025] Main drawing mark explanation:

[0026] 1-first chuck handle, 101-positioning groove, 2-second chuck handle, 201-oval opening slot, 202-first cutout slot, 3-chuck body, 301-second cutout slot, 4-clamping assembly, 401-first clamping block, 402-second clamping block, 403-third cutout slot, 5-clamping cavity, 501-first cavity, 502-second cavity. Specific implementation

[0027] In order to make the personnel in the technical field better understand the technical scheme in the utility model, the technical scheme in the embodiment of the utility model will be described clearly and completely in the embodiment of the utility model below, obviously, the described embodiment is only a part of the embodiment of the utility model, not all the embodiment. Based on the embodiment in the utility model, all other embodiments obtained by the ordinary skill in the art without creative labor should belong to the protection scope of the utility model.

[0028] As Figures 1-4 The utility model discloses a structure main view of back axle special-shaped eccentric cylinder clamp for the heart machine in an embodiment of the utility model, including the first chuck handle 1, second chuck handle 2, chuck body 3 and clamping assembly 4 that connect in proper order, first chuck handle 1, second chuck handle 2, chuck body 3 and clamping assembly 4 are integrally connected, and the circumferential wall of second chuck handle 2, chuck body 3, clamping assembly 4 and clamping cavity 5 is all processed with cutout slot, and the cutout slot is equipped with four groups, and every two groups of cutout slots are perpendicular to each other, and when using, the one end of polygonal workpiece is clamped on the inner wall of clamping cavity 5, under the action of cutout slot, not only the elastic deformation ability of cylinder clamp is enhanced, so that the cylinder clamp has certain elasticity when clamping product, and the stability of clamping is increased.

[0029] The circumferential wall refers to the outer edge in the circumferential direction.

[0030] Preferably, the material of the back shaft special-shaped eccentric collet for the boring machine is high-carbon alloy tool steel, which has extremely high hardness, so that the collet can maintain the stability of the shape when clamping the workpiece and is not prone to deformation.

[0031] Further, the cutout groove includes an elliptical opening groove 201, a first cutout groove 202, a second cutout groove 301 and a third cutout groove 403, the elliptical opening groove 201 and the first cutout groove 202 are arranged on the outer wall of the second collet handle 2, the second cutout groove 301 is arranged on the side wall of the collet body 3, and the third cutout groove 403 is arranged on the side wall of the clamping assembly 4.

[0032] Further, the outer diameter size of the collet body 3 gradually increases from the second collet handle 2 to the position of the clamping assembly 4.

[0033] The shape of the collet body 3 is not particularly limited, and a person skilled in the art can make a conventional selection according to the needs.

[0034] Preferably, the shape of the collet body 3 is conical.

[0035] As shown in Figure 2 The shape of the clamping cavity 5 is polygonal, and the clamping cavity 5 is eccentric to the center of the clamping assembly 4, and the special-shaped collet can meet the clamping of the special-shaped product with irregular shape and multiple surfaces with different heights.

[0036] Further, the clamping assembly 4 includes a pair of first clamping blocks 401 and a pair of second clamping blocks 402, the clamping cavity 5 includes a first cavity 501 and a second cavity 502, the first cavity 501 is arranged on the outer wall of the first clamping block 401 and the second clamping block 402, the second cavity 502 is arranged on one side of the first clamping block 401 located in the first cavity 501, the first cavity 501 and the second cavity 502 are communicated, and the centers of the first clamping block 401 and the second clamping block 402 are located on the inner wall of the first cavity 501 for clamping the workpiece.

[0037] Preferably, the clamping cavity 5 is quadrilateral in shape.

[0038] like Figure 3 As shown, one end of the clamping component 4 is located on one side of the chuck body 3, and the other end is integrally formed on the inner wall of the chuck body 3, thereby increasing the wall thickness at the connection between the chuck body 3 and the clamping component 4, making the connection between the chuck body 3 and the clamping component 4 more robust, and able to withstand greater external forces and pressures, thereby improving the structural strength of the entire collet.

[0039] like Figure 4 As shown, a positioning groove 101 is provided on one side wall of the first collet handle 1. The positioning groove 101 is located on one side of the elliptical opening groove 201 and is used for positioning the collet.

[0040] When in use, the workpiece to be processed is placed in the clamping cavity 5, and the clamping component 4 clamps the workpiece. Then, subsequent processing can be carried out. This irregular chuck can meet the clamping requirements of irregular products with irregular shapes and multiple different heights. The eccentric structure design realizes the precise adjustment of the eccentric distance, ensuring higher precision of the processed products. This can reduce material costs and improve production efficiency.

[0041] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0042] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A back shaft special-shaped eccentric cylinder chuck for a lathe, characterized in that, The chuck comprises a first chuck handle, a second chuck handle, a chuck body and a clamping assembly connected in sequence, the first chuck handle, the second chuck handle, the chuck body and the clamping assembly are fixedly connected in sequence, the second chuck handle, the chuck body and the clamping assembly are all provided with a notch groove on the peripheral wall, and the clamping assembly is provided with a clamping cavity on the side wall away from the chuck body. The clamping cavity is polygonal and eccentric to the center of the clamping assembly.

2. The back shaft special-shaped eccentric collet for a gear cutting machine according to claim 1, characterized in that, The notch groove comprises an elliptical opening groove, a first notch groove, a second notch groove and a third notch groove, the elliptical opening groove and the first notch groove are arranged on the outer wall of the second chuck handle, the second notch groove is arranged on the side wall of the chuck body, and the third notch groove is arranged on the side wall of the clamping assembly.

3. The back shaft special-shaped eccentric collet for a gear cutting machine according to claim 1, characterized in that, The outer diameter of the chuck body gradually increases from the second chuck handle to the clamping assembly.

4. The back shaft special-shaped eccentric collet for a gear cutting machine according to claim 1, characterized in that, The minimum outer diameter of the chuck body is greater than the maximum outer diameter of the second chuck handle and the clamping assembly.

5. The back shaft special-shaped eccentric collet for a gear cutting machine according to claim 2, characterized in that, The elliptical opening groove, the first notch groove, the second notch groove and the third notch groove are all provided with four groups of openings which are communicated with each other.

6. The back shaft special-shaped eccentric collet for a gear cutting machine according to claim 5, characterized in that, The side walls at both ends of the elliptical opening groove are both U-shaped.

7. The back shaft special-shaped eccentric collet for a gear cutting machine according to claim 1, characterized in that, One end of the clamping assembly is located on one side of the chuck body, and the other end is integrally formed on the inner wall of the chuck body.

8. The back shaft special-shaped eccentric collet for a gear cutting machine according to claim 7, characterized in that, The clamping assembly comprises a first clamping block and a second clamping block, and the clamping cavity comprises a first cavity and a second cavity.

9. The back shaft special-shaped eccentric collet for a gear cutting machine according to claim 8, characterized in that, The first cavity is arranged on the outer wall of the first clamping block and the second clamping block, the second cavity is arranged on one side of the first clamping block, and the first cavity and the second cavity are communicated.

10. The back shaft special-shaped eccentric cylinder chuck for a gear cutting machine according to any one of claims 1 to 9, characterized in that, The material of the back shaft special-shaped eccentric cylinder chuck of the live center machine is high-carbon alloy tool steel.

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