Spiral pressing clamp for batch machining of micro parts

Abstract

The invention discloses a spiral pressing clamp for batch machining of tiny parts, which comprises a fixed disc, the top surface of the fixed disc is provided with a spiral groove extending along a spiral line, the shape of the cross section of the spiral groove is matched with the shape of a to-be-machined part, and a plurality of to-be-machined parts are closely arranged in the spiral groove in a single row; a through hole is formed in the side wall of the fixing disc in the tangential direction of the starting end of the outer ring of the spiral groove, and one end of a jackscrew penetrates through the through hole to press and fix a part in the spiral groove; an ejection disc is arranged below the fixing disc, a plurality of ejection rods are fixedly arranged on the ejection disc, a through hole set communicated with the bottom of the spiral groove is formed in the bottom face of the fixing disc, and the ejection rods and the through hole set are in axial sliding fit and used for ejecting machined parts in the spiral groove out of the spiral groove. According to the spiral pressing clamp, the clamping density is greatly improved, stable fixing and effective pressing of micro parts in the machining process and rapid unloading after machining are achieved, the structure is simple, and operation is convenient.

Description

Technical Field

[0001] The invention relates to the field of workpiece clamps for numerically controlled machine tools, in particular to a spiral clamp for batch processing of tiny parts. Background Art

[0002] With the rapid development of precision instruments, high-end equipment and other fields, the demand for batch processing of micro-small parts has grown rapidly. However, existing CNC machine tool fixtures have some shortcomings in clamping small-size and large-volume parts processing. Traditional mechanical clamping devices are limited by the minimum clamping specifications and often cannot provide sufficient clamping force or uniform pressure distribution, which can easily lead to loose parts or reduced processing accuracy. Especially in a large-scale production environment, the positioning surface of tiny parts is small, and it is difficult to accurately match the reference surfaces of a large number of parts when positioning, which directly affects the processing consistency. The multi-station design requires a large clamping space to be reserved, resulting in low space utilization. At the same time, the clamping of a large number of parts increases non-processing time, seriously restricting production efficiency. Summary of the invention

[0003] In view of the problems existing in the above-mentioned prior art, the present invention provides a spiral clamp for batch processing of tiny parts, which improves the efficiency of clamping and unloading, while ensuring the stability and safety of the parts during the processing, thereby improving the quality and efficiency of tiny parts processing.

[0004] The technical solution adopted by the present invention is as follows: a spiral clamp for batch processing of tiny parts, comprising: A fixed plate, the top surface of which is provided with a spiral groove extending along a spiral line, the cross-sectional shape of the spiral groove matches the shape of the part to be processed, and a plurality of parts to be processed are closely arranged in a single row in the spiral groove; The fixing mechanism comprises a through hole arranged on the side wall of the fixing plate and a top screw assembled at the through hole, wherein the through hole is located in the tangential direction of the starting end of the outer ring of the spiral groove, and one end of the top screw passes through the through hole to press and fix the parts in the spiral groove; The ejection mechanism includes an ejection disk arranged below the fixed disk and a plurality of ejector rods fixed to the ejection disk. The bottom surface of the fixed disk is provided with a through hole group connected to the bottom of the spiral groove. Each ejector rod forms an axial sliding fit with the through hole group to eject the processed parts in the spiral groove out of the spiral groove.

[0005] Furthermore, an arc-shaped top block in contact with the part is provided at the axial end of the top screw.

[0006] Furthermore, the through hole is provided with an internal thread, and the top screw and the internal thread of the through hole form a spiral pair.

[0007] Furthermore, an axially extending stud is fixedly provided at the bottom center of the fixed disk, and the stud forms a clearance fit with a positioning through hole arranged in the center of the ejection disk. The end of the stud extends out of the positioning through hole and is threadedly connected with a clamping nut, and the ejection disk is driven to move axially along the stud by screwing the clamping nut.

[0008] Furthermore, a positioning groove matching the outer diameter of the ejection disk is provided on the bottom surface of the fixed disk, and the ejection disk is located in the positioning groove.

[0009] Furthermore, the side wall of the fixing plate is provided with at least one group of symmetrically arranged locking screw holes, the locking screw holes penetrate through the side wall of the positioning groove, and the inner threads of the screw holes are connected with locking screws for fixing the ejection plate.

[0010] The beneficial effects of the present invention are as follows: the present invention realizes the single-row close arrangement and clamping of multiple parts by means of the spiral grooves arranged on the fixed disk, the clamping density is greatly improved, and the space utilization rate is improved compared with the traditional multi-station clamp; the single-row close arrangement of parts not only saves space, but also makes the processing surface (top surface) of the parts continuous, which is convenient for subsequent continuous processing operations and improves the continuity and efficiency of the processing flow; the parts are inserted in the spiral grooves and tightened and fixed by a top screw, which not only simplifies the fixture structure, but also makes the operation extremely simple, greatly improving the clamping efficiency; with the ejection mechanism, after the parts are processed, the parts can be conveniently and quickly taken out from the fixed disk, realizing the rapid unloading of the parts after the processing is completed. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the top surface structure of the fixed disk of the present invention.

[0012] Figure 2 It is a structural schematic diagram of the ejection mechanism of the present invention.

[0013] Figure 3 It is a schematic diagram of the parts clamping state of the present invention.

[0014] Figure 4 yes Figure 3 Schematic diagram of the cross-sectional structure. DETAILED DESCRIPTION

[0015] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0016] like Figure 1-Figure 4As shown, the present embodiment provides a spiral clamp for batch processing of tiny parts, including a fixing plate 100, a fixing mechanism, and an ejection mechanism.

[0017] The top surface of the fixed disk 100 is provided with a spiral groove 101 extending along a spiral line, and the cross-sectional shape of the spiral groove 101 matches the shape of the part 500 to be processed, and a plurality of parts 500 to be processed are closely arranged in a single row in the spiral groove 101; The fixing mechanism includes a through hole provided on the side wall of the fixing plate 100 and a top screw 200 assembled at the through hole. The through hole is located in the tangential direction of the starting end of the outer ring of the spiral groove 101. One end of the top screw 200 passes through the through hole to press and fix the part 500 in the spiral groove 101. The ejection mechanism includes an ejection disk 300 arranged below the fixed disk 100 and a plurality of ejector rods 301 fixed to the ejection disk 300. The bottom surface of the fixed disk 100 is provided with a through hole group 102 connected to the bottom of the spiral groove 101. Each ejector rod 301 forms an axial sliding fit with the through hole group 102 to eject the part 500 processed in the spiral groove 101 out of the spiral groove 101.

[0018] As an embodiment of the present invention, the axial end of the top screw 200 is provided with an arc-shaped top block 201 in contact with the part 500. The arc-shaped top block 201 and the top screw 200 are in abutment or rotational fit, and the top screw 200 acts on the part 500 through the arc-shaped top block 201, thereby increasing the contact area with the part 500, reducing local pressure, and preventing the part 500 from being damaged.

[0019] As an embodiment of the present invention, the through hole is provided with an internal thread, and the top screw 200 and the internal thread of the through hole form a spiral pair, so that the pressing force can be adjusted by rotating the top screw 200.

[0020] As an embodiment of the present invention, the surface of the part 500 to be processed is coated with a metal adhesive, and all the parts 500 to be processed are placed in the spiral groove 101 and fixed by pressing with the top screw 200. After the metal adhesive is cured, the clamping of the part 500 is completed.

[0021] As an embodiment of the present invention, an axially extending stud 103 is fixed at the bottom center of the fixed disk 100. The stud 103 forms a clearance fit with the positioning through hole 302 set at the center of the ejection disk 300, which not only ensures the axial movement freedom of the ejection disk 300, but also ensures its stability. The end of the stud 103 extends out of the positioning through hole 302 and is threadedly connected with a clamping nut 600. By screwing the clamping nut 600, the ejection disk 300 is driven to move axially along the stud 103, thereby realizing precise control of the ejection mechanism.

[0022] As an embodiment of the present invention, the bottom surface of the fixed plate 100 is provided with a positioning groove 104 matching the outer diameter of the ejection plate 300, and the ejection plate 300 is located in the positioning groove 104. The positioning groove 104 can provide better positioning and guidance, reduce the deflection of the ejection plate 300 during movement, and improve stability.

[0023] As an embodiment of the present invention, the side wall of the fixed disk 100 is provided with at least one group of symmetrically arranged locking screw holes, which penetrate the side wall of the positioning groove 104, and the inner thread of the screw hole is connected with a tightening screw 400 for fixing the ejection disk 300. Before the ejection operation, the position of the ejection disk 300 can be fixed by tightening the tightening screw 400. When the ejection operation is required, the tightening screw 400 is loosened, and the compression nut 600 is rotated to push the ejection disk 300 to move upward, and then the parts 500 are ejected from the spiral groove 101 through the through hole group 102 respectively through each ejector rod 301.

[0024] The above contents are merely examples and explanations of the structure of the present invention. The technicians in this technical field may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the structure of the present invention or exceed the scope defined by the claims, they should all fall within the protection scope of the present invention.

Claims

1. A screw clamp for batch processing of tiny parts, characterized in that: include: A fixed plate (100) having a top surface provided with a spiral groove (101) extending along a spiral line, the cross-sectional shape of the spiral groove (101) matching the shape of the part to be processed (500), and a plurality of parts to be processed (500) being closely arranged in a single row within the spiral groove (101); The fixing mechanism comprises a through hole provided on the side wall of the fixing plate (100) and a top screw (200) mounted on the through hole, wherein the through hole is located in the tangential direction of the starting end of the outer ring of the spiral groove (101), and one end of the top screw (200) passes through the through hole to press and fix the part (500) in the spiral groove (101); The ejection mechanism comprises an ejection disk (300) arranged below the fixed disk (100) and a plurality of ejector rods (301) fixed to the ejection disk (300); the bottom surface of the fixed disk (100) is provided with a through hole group (102) connected to the bottom of the spiral groove (101); each ejector rod (301) forms an axial sliding fit with the through hole group (102) for ejecting a part (500) processed in the spiral groove (101) out of the spiral groove (101).

2. A screw clamp for batch processing of micro parts as claimed in claim 1, characterized in that: An arc-shaped top block (201) in contact with the part (500) is provided at the axial end of the top screw (200).

3. A screw clamp for batch processing of micro parts as claimed in claim 1, characterized in that: The through hole is provided with an internal thread, and the top screw (200) and the internal thread of the through hole form a spiral pair.

4. A screw clamp for batch processing of micro parts as claimed in claim 1, characterized in that: The surface of the part (500) to be processed is coated with a metal adhesive, and all the parts (500) to be processed are placed in the spiral groove (101) and pressed and fixed by means of a top screw (200). After the metal adhesive is cured, the clamping of the parts (500) is completed.

5. A screw clamp for batch processing of micro parts according to any one of claims 1 to 4, characterized in that: An axially extending stud (103) is fixedly disposed at the bottom center of the fixed disk (100), and the stud (103) forms a clearance fit with a positioning through hole (302) disposed at the center of the ejection disk (300). The end of the stud (103) extends out of the positioning through hole (302) and is threadedly connected with a clamping nut (600), and the ejection disk (300) is driven to move axially along the stud (103) by screwing the clamping nut (600).

6. A screw clamp for batch processing of micro parts as claimed in claim 5, characterized in that: The bottom surface of the fixed disk (100) is provided with a positioning groove (104) matching the outer diameter of the ejection disk (300), and the ejection disk (300) is located in the positioning groove (104).

7. A screw clamp for batch processing of micro parts as claimed in claim 6, characterized in that: The side wall of the fixing plate (100) is provided with at least one group of symmetrically arranged locking screw holes, the locking screw holes passing through the side wall of the positioning groove (104), and the inner threads of the screw holes are connected to locking screws (400) for fixing the ejection plate (300).

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