Horizontal key machine square rotary clamp

Abstract

The utility model belongs to the technical field of key preparation relates to a horizontal key machine square rotating clamp, including base, the horizontal strip groove is set up on the base, a pair of square clamps is assembled in the strip groove, different step -type recess structure is provided with at least three side surfaces of square clamp, and the square rotating clamp can select one to process the key of different wave tooth ; Square clamp is constituted by the closing of upper clamping block and lower clamping block, and the clamping gap is formed between upper clamping block and lower clamping block, and the elastic element that provides the separating tendency is arranged between the two, the bottom of lower clamping block is provided with the square positioning block that cooperates with strip groove and restricts the circumferential rotation of square clamp. The horizontal key machine square rotating clamp provided by the utility model has multiple processing stations, and the switching between multiple processing stations is accurate and fast.

Description

Technical Field

[0001] This utility model belongs to the technical field of key duplication and relates to a horizontal key machine four-way rotating clamp. Background Technology

[0002] A key duplication fixture is a specialized device used to hold the key prototype and key blank in place during the key duplication process. Its main function is to ensure that the key prototype and key blank remain stable and in accurate relative positions during the duplication process, so that the key duplicator can accurately process the key blank according to the tooth shape, groove shape, and other features of the prototype key, thereby improving the accuracy and quality of key duplication.

[0003] Existing horizontal key-making machine fixtures typically only accommodate one or a limited number of key blanks. When different types of keys need to be copied, the machine often needs to be stopped and the entire fixture replaced, which is cumbersome and inefficient. Although some rotatable and switchable fixture designs exist, their structures are often quite complex, mostly employing a modular design. After multiple rotations and switching, assembly errors can easily accumulate, leading to decreased positioning accuracy and affecting the quality of key processing. Utility Model Content

[0004] This utility model addresses the shortcomings of existing technologies by providing a horizontal key machine four-way rotating clamp, which has multiple processing stations and allows for precise and quick switching between these stations.

[0005] To solve the above-mentioned technical problems, the objective of this utility model is achieved through the following technical solution: A horizontal key machine four-sided rotating clamp includes a base with a transverse strip groove. A pair of four-sided clamps are assembled in the strip groove. The four-sided clamps have different stepped groove structures on at least three sides. The rotating four-sided clamp can be selected to process keys with different wave-shaped teeth. The four-way clamp is composed of an upper clamping block and a lower clamping block that are engaged together. A clamping notch is formed between the upper clamping block and the lower clamping block, and an elastic element that provides a separation tendency is provided between them. The bottom of the lower clamping block is provided with a square positioning block that engages with the strip groove and constrains the circumferential rotation of the four-way clamp. The side of the square positioning block is parallel to the side of the four-way clamp. The mating surfaces of the upper clamping block and the lower clamping block are provided with polygonal protrusions and polygonal grooves that fit together to constrain the relative rotation of the two. The square clamp is locked by a handle screw, which passes through a through hole in the square clamp and connects to a pre-set threaded hole on the base.

[0006] In the aforementioned horizontal key machine square rotating fixture, the square positioning block, through hole, and threaded hole are all coaxially arranged with the square fixture.

[0007] In the above-mentioned horizontal key machine four-way rotating clamp, the through hole is formed by the connection of an upper through hole in the upper clamping block and a lower through hole in the lower clamping block. The elastic element is a compression spring and is sleeved on the handle screw. The elastic element is accommodated in the upper through hole.

[0008] In the above-mentioned horizontal key machine four-way rotating clamp, the diameter of the upper through hole is larger than the diameter of the lower through hole, and an inwardly extending inner convex ring is provided on the inner wall of the upper through hole. The top end of the elastic element abuts against the bottom surface of the inner convex ring, and the bottom end abuts against the top surface of the lower clamping block. Preferably, the inner diameter of the inner convex ring is the same as the diameter of the lower through hole.

[0009] In the aforementioned horizontal key machine four-way rotating fixture, the strip groove penetrates the base in the transverse direction, that is, in a direction parallel to the length of the key.

[0010] In the above-mentioned horizontal key machine four-way rotating clamp, the bottom of the lower clamping block is provided with a groove surrounding the square positioning block, and an annular buffer pad is installed in the groove. During assembly, the annular buffer pad contacts the bottom of the strip groove to reduce shock.

[0011] In the above-mentioned horizontal key machine four-way rotating clamp, the handle screw includes a handle part and a screw part. The radial dimension of the handle part is larger than the through hole and presses against the top surface of the upper clamping block. The lower end of the screw part is provided with an external thread that mates with the threaded hole.

[0012] In the above-mentioned horizontal key machine four-sided rotating fixture, the polygonal protrusion and the polygonal groove are respectively a four-sided protrusion and a four-sided groove. The three sides of the four-sided fixture are respectively provided with a first clamping station, a second clamping station and a third clamping station, and the other side is a non-working plane without clamping notches. One side of the polygonal protrusion and the polygonal groove is coplanar with the non-working plane.

[0013] In the above-mentioned horizontal key machine four-way rotating clamp, preferably, the polygonal groove is disposed on the upper clamping block and the polygonal protrusion is disposed on the lower clamping block.

[0014] Compared with the prior art, this utility model has the following advantages: 1. This utility model provides a horizontal key machine four-sided rotating fixture, which integrates at least three clamping notches of different specifications to form different processing stations. Through a simple overall rotation operation, the required station can be quickly selected, which greatly expands the applicability of the fixture, reduces the downtime for changing fixtures, improves key processing efficiency, and reduces equipment configuration costs.

[0015] 2. This utility model establishes a direct circumferential rotation constraint mechanism through the tight fit between the square positioning block at the bottom of the lower clamping block and the strip groove on the base. This structure is simple and effective, ensuring that the four-sided clamp is accurately positioned in the preset position each time when rotating and switching working surfaces, without any wobbling or gaps. This effectively avoids processing errors caused by inaccurate positioning and guarantees the accuracy of key duplication.

[0016] 3. The elastic element of this invention is integrated into the upper through hole of the upper clamping block. The inner convex ring formed by the difference in hole diameter serves as the limiting surface for the upper end of the spring, while the lower end of the spring directly abuts against the top surface of the lower clamping block. This design allows the elastic element to be completely internally integrated, eliminating the need for additional fixing parts and resulting in an extremely simple structure. It not only facilitates assembly but also ensures uniform spring force distribution, good guidance, and stable and reliable operation during operation, while simultaneously keeping the external contour of the clamping fixture clean and free from interference. Attached Figure Description

[0017] Figure 1 This is a perspective view of the present invention; Figure 2 This is a perspective view of the square clamp of this utility model; Figure 3 This is a cross-sectional view of the square clamp of this utility model; Figure 4 This is an exploded view of the square clamp of this utility model; Reference numerals: 1. Base; 2. Strip groove; 3. Square clamp; 4. Key; 5. Upper clamping block; 6. Lower clamping block; 7. Elastic element; 8. Square positioning block; 9. Polygonal protrusion; 10. Polygonal groove; 11. Handle screw; 12. Threaded hole; 13. Upper through hole; 14. Lower through hole; 15. Inner convex ring; 16. First clamping station; 17. Second clamping station; 18. Key-specific clamping station; 19. Non-working plane. Detailed Implementation

[0018] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. See also: Figure 1-4 : A horizontal key machine four-way rotating clamp mainly includes a base 1 and two symmetrically arranged four-way clamps 3.

[0019] The aforementioned base 1 is used to be installed on the key machine workbench, and a strip groove 2 is formed on its upper part along the horizontal direction (i.e., parallel to the length direction of the key 4). In this embodiment, the strip groove 2 is a through groove, which facilitates cleaning and processing.

[0020] The aforementioned square clamp 3 has at least three sides with different processing stations. Rotating the square clamp 3 allows selection of one of these stations to process different keys 4. The square clamp 3 is composed of an upper clamping block 5 and a lower clamping block 6 that are engaged. A stepped groove structure is machined between the upper clamping block 5 and the lower clamping block 6 to form a clamping notch. The clamping notch is used to clamp the key 4 for processing. In this embodiment, different stepped groove structures are machined on three sides. The stepped groove structure is adapted to the shape of the key 4 to be processed. Specifically, the first clamping station 16 is configured to adapt to the structure of the flat key 4, for single-sided and double-sided teeth, especially suitable for Wangli front and back keys 4 and Huajue keys 4. The second clamping station 17 is configured to adapt to the toothed clamping position of the small key 4. The key-specific clamping station 18 is configured to adapt to the special clamping position of the key 4. The other side is a non-working plane 19 without a clamping notch.

[0021] In this embodiment, precise positioning is achieved by a square positioning block 8 when switching the square clamp 3. Specifically, the bottom of the lower clamping block 6 is provided with a square positioning block 8 that cooperates with the strip groove 2 and constrains the circumferential rotation of the square clamp 3. The side of the square positioning block 8 is parallel to the side of the square clamp 3. The square positioning block 8 can be tightly accommodated in the strip groove 2, ensuring that the square clamp 3 can be precisely limited without any play after each 90° rotation.

[0022] To prevent relative rotation between the upper clamping block 5 and the lower clamping block 6 from affecting clamping stability, interlocking polygonal protrusions 9 and polygonal grooves 10 are provided on their mating surfaces. This structure ensures that after the two clamping blocks are engaged, they form a rigid whole in the circumferential direction and can only move relative to each other along the guide direction (i.e., the up-down direction). In this embodiment, the polygonal groove 10 is provided on the upper clamping block 5, and the polygonal protrusion 9 is provided on the lower clamping block 6. They are respectively a square protrusion and a square groove, and one side of the polygonal protrusion 9 and the polygonal groove 10 are coplanar with the non-working plane 19.

[0023] The square clamp 3 is locked by a handle screw 11, which passes through a through hole in the square clamp 3 and connects to a pre-set threaded hole 12 on the base 1. Further, the through hole is formed by the mating of an upper through hole 13 in the upper clamping block 5 and a lower through hole 14 in the lower clamping block 6. The square positioning block 8, the through holes (upper through hole 13 and lower through hole 14), and the threaded hole 12 are all coaxially arranged with the square clamp 3. Further, the handle screw 11 includes a handle portion and a screw portion. The radial dimension of the handle portion is larger than the through hole and presses against the top surface of the upper clamping block 5. The lower end of the screw portion is provided with an external thread that mates with the threaded hole 12.

[0024] The automatic opening function of the clamp is achieved by an elastic element 7: an elastic element 7 providing a separation tendency is provided between the upper clamping block 5 and the lower clamping block 6. In this embodiment, the elastic element 7 is a compression spring sleeved on the handle screw 11, and the elastic element 7 is accommodated in the upper through hole 13. Its assembly structure is as follows: the diameter of the upper through hole 13 is larger than the diameter of the lower through hole 14, and an inwardly extending inner protruding ring 15 is provided on the inner wall of the upper through hole 13. The top end of the elastic element 7 abuts against the bottom surface of the inner protruding ring 15, and the bottom end abuts against the top surface of the lower clamping block 6; preferably, the inner diameter of the inner protruding ring 15 is the same as the diameter of the lower through hole 14.

[0025] The bottom of the aforementioned lower clamping block 6 is provided with a groove surrounding the square positioning block 8. An annular buffer pad is installed in the groove. During assembly, the annular buffer pad contacts the bottom of the strip groove 2 to reduce vibration.

[0026] The usage method of this embodiment is as follows: Loosen the handle screw 11. Under the elastic force of the elastic element 7, the upper clamping block 5 and the lower clamping block 6 automatically separate. Place the key blank 4 to be processed into the clamping notch on the selected side. Tighten the handle screw 11. The handle part presses down on the upper clamping block 5. The upper clamping block 5 transmits the force to the lower clamping block 6 through the compression spring, eventually causing the upper and lower clamping blocks 6 to close against the spring force, firmly clamping the key 4. At the same time, the handle screw 11 pulls the entire square clamp 3 tight and fixes it on the base 1. Then, the firmly clamped key 4 can be processed by contour machining.

[0027] If you need to change to key type 4, first loosen the handle screw 11 (the axial displacement stroke must be greater than the displacement of the square positioning block 8 from the slot 2), then overcome the elastic force of the elastic element 7 to lift the lower clamping block 6, so that the square positioning block 8 moves outside the slot 2. Rotate the square clamp 3 as a whole by 90° or 180°, select the corresponding processing station, and after releasing, the elastic element 7 drives the lower clamping block 6 to move down, so that the square positioning block 8 re-engages in the slot 2. Of course, you can also completely remove the handle screw 11 from the base 1 and reassemble it.

[0028] The above embodiments are merely preferred embodiments of the present utility model and are not intended to limit the scope of protection of the present utility model. Therefore, all equivalent changes made to the structure, shape, and principle of the present utility model should be covered within the scope of protection of the present utility model.

Claims

1. A horizontal key machine four-way rotating clamp, comprising a base (1), wherein a transverse strip groove (2) is provided on the base (1), characterized in that, The strip groove (2) is equipped with a pair of square clamps (3). The square clamps (3) have different stepped groove structures on at least three sides. By rotating the square clamps (3), one of them can be selected to process keys (4) with different wave-shaped teeth. The square clamp (3) is composed of an upper clamping block (5) and a lower clamping block (6) mating together. A clamping notch is formed between the upper clamping block (5) and the lower clamping block (6), and an elastic element (7) is provided between them to provide a separation tendency. The bottom of the lower clamping block (6) is provided with a square positioning block (8) that cooperates with the strip groove (2) and constrains the circumferential rotation of the square clamp (3). The side of the square positioning block (8) is parallel to the side of the square clamp (3). The mating surfaces of the upper clamping block (5) and the lower clamping block (6) are provided with polygonal protrusions (9) and polygonal grooves (10) that fit together to constrain the relative rotation of the two. The square clamp (3) is locked by a handle screw (11), which passes through a through hole on the square clamp (3) and connects to a pre-set threaded hole (12) on the base (1).

2. The horizontal key machine four-way rotating clamp according to claim 1, characterized in that, The square positioning block (8), through hole and threaded hole (12) are all coaxially arranged with the square clamp (3).

3. A horizontal key machine four-way rotating clamp according to claim 2, characterized in that, The through hole is formed by connecting the upper through hole (13) in the upper clamping block (5) and the lower through hole (14) in the lower clamping block (6). The elastic element (7) is a compression spring and is sleeved on the handle screw (11). The elastic element (7) is accommodated in the upper through hole (13).

4. A horizontal key machine four-way rotating clamp according to claim 3, characterized in that, The diameter of the upper through hole (13) is larger than that of the lower through hole (14). An inwardly extending inner convex ring (15) is provided on the inner wall of the upper through hole (13). The top end of the elastic element (7) abuts against the bottom surface of the inner convex ring (15) and the bottom end abuts against the top surface of the lower clamping block (6).

5. A horizontal key machine four-way rotating clamp according to claim 1, characterized in that, The strip groove (2) extends laterally through the base (1).

6. A horizontal key machine four-way rotating clamp according to claim 1, characterized in that, The handle screw (11) includes a handle part and a screw part. The radial dimension of the handle part is larger than the through hole and presses against the top surface of the upper clamping block (5). The lower end of the screw part is provided with an external thread that mates with the threaded hole (12).

7. A horizontal key machine four-way rotating clamp according to claim 1, characterized in that, The polygonal protrusion (9) and polygonal groove (10) are respectively a four-sided protrusion and a four-sided groove. The three sides of the square clamp (3) are respectively provided with a first clamping station (16), a second clamping station (17) and a key-specific clamping station (18). The other side is a non-working plane (19) without clamping notches. One side of the polygonal protrusion (9) and polygonal groove (10) is coplanar with the non-working plane (19).

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