Clamp for quickly clamping small and medium special-shaped parts

Abstract

The utility model discloses a clamp for rapidly clamping special-shaped small and medium parts, and relates to the technical field of tool clamps, the clamp comprises a base, a first positioning table and a second positioning table are arranged at the two ends of the base respectively, and a V-shaped positioning groove used for clamping a cylindrical process table is formed in the side, facing the second positioning table, of the first positioning table; the second positioning table is provided with an abutting block used for abutting the special-shaped small and medium parts against the V-shaped positioning groove. By arranging the first positioning table and the second positioning table, the special-shaped small and medium parts are placed between the first positioning table and the second positioning table, the cylindrical process tables of the special-shaped small and medium parts are clamped through the V-shaped positioning grooves, clamping of the process tables of different sizes can be achieved, wide applicability is achieved, meanwhile, the special-shaped small and medium parts abut against the interiors of the V-shaped positioning grooves through abutting blocks, and the machining efficiency is improved. And special-shaped small and medium-sized parts can be rapidly clamped, and convenience and rapidness are achieved.

Description

Technical Field

[0001] This application relates to the technical field of tooling fixtures, and particularly to a fixture for quickly clamping irregular small and medium-sized parts. Background Art

[0002] For clamping irregular small and medium-sized workpieces with cylindrical process platforms, existing fixtures usually involve arc-shaped tooling fixtures that match the cylindrical process platforms for clamping. However, such tooling fixtures are often single-purpose, and one fixture is only suitable for one cylindrical process platform part that matches it, with low practicality. Summary of the Utility Model

[0003] The main purpose of this application is to provide a fixture for quickly clamping irregular small and medium-sized parts, aiming to solve the above technical problems.

[0004] The technical solution adopted in this application is as follows:

[0005] A fixture for quickly clamping irregular small and medium-sized parts includes a base. At both ends of the base, a first positioning table and a second positioning table are respectively arranged. On one side of the first positioning table facing the second positioning table, a V-shaped positioning groove for clamping a cylindrical process platform is provided, and the second positioning table is provided with a pressing block for pressing the irregular small and medium-sized part against the V-shaped positioning groove.

[0006] Optionally, the pressing block includes a first movable block that can approach and move away from the V-shaped positioning groove, and a second movable block movably connected to one end of the first movable block close to the V-shaped positioning groove. The ends of the first movable block and the second movable block in contact with each other are in sliding fit with a wedge-shaped inclined plane. A dovetail groove is provided on the wedge-shaped inclined plane of the first movable block for connecting the second movable block, and a dovetail slider is provided on the wedge-shaped inclined plane of the second movable block for connecting the first movable block. A pin hole is formed by enclosing between the dovetail groove and the dovetail slider. A thread is provided on one side of the pin hole where the second movable block is located, and a threaded pin head is rotatably arranged in the pin hole.

[0007] Optionally, a buffer block is provided on the groove surface of the V-shaped positioning groove.

[0008] Optionally, a strip-shaped hole is provided along the long axis direction of the pressing block, and an assembly bolt for assembling the pressing block to the second positioning table is arranged in the strip-shaped hole.

[0009] Optionally, a slot is further provided on the second positioning table, and a stop block is arranged in the slot to block one end of the pressing block away from the irregular small and medium-sized part.

[0010] Optionally, thick positioning pins are horizontally arranged on two end faces of one side of the V-shaped positioning groove facing the second positioning table.

[0011] Compared with the prior art, the beneficial effects of the present application are as follows:

[0012] A fixture for quickly clamping small and medium-sized special-shaped parts proposed in an embodiment of the present application, by setting a first positioning table and a second positioning table, placing the small and medium-sized special-shaped parts between the first positioning table and the second positioning table, and using the V-shaped positioning groove to clamp the cylindrical process platform of the small and medium-sized special-shaped parts, can realize the clamping of process platforms of different sizes, has wide applicability, and at the same time, the small and medium-sized special-shaped parts are pressed tightly against the V-shaped positioning groove by the pressing block, so that the quick clamping of the small and medium-sized special-shaped parts can be realized, which is convenient and fast. Description of the Drawings

[0013] Figure 1 is a schematic structural diagram of the fixture for quickly clamping small and medium-sized special-shaped parts provided by an embodiment of the present application from a perspective;

[0014] Figure 2 is Figure 1 the enlarged view of part A in

[0015] Explanation of the reference numerals in the drawings:

[0016] 1 - base, 2 - first positioning table, 3 - second positioning table, 4 - V-shaped positioning groove, 5 - pressing block, 501 - first movable block, 502 - second movable block, 503 - dovetail slider, 504 - threaded pin head, 6 - assembly bolt, 7 - buffer block, 8 - stop block, 9 - strip hole, 10 - fixing bolt, 11 - rough positioning pin. Detailed Embodiments

[0017] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present application.

[0018] It should be noted that all the directional indications (such as up, down, left, right, front, back...) in the embodiments of the present application are only used to explain the relative position relationship and movement conditions between components in a specific posture (as shown in the drawings). If the specific posture changes, the directional indications will also change accordingly.

[0019] In this application, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0020] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present application, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing in the full text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in the field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0021] See attached Figure 1 The embodiment of the present application provides a fixture for quickly clamping special-shaped small and medium-sized parts, which is particularly suitable for special-shaped small and medium-sized parts with a cylindrical process table, and the special-shaped small and medium-sized parts have at least one plane at a symmetrical position with the clamped surface of the cylindrical process table axis. In this embodiment, the fixture for quickly clamping special-shaped small and medium-sized parts includes a base 1, which is usually plate-shaped. Of course, other shapes suitable for design can also be designed according to needs. Bolt holes are provided on the base 1 for fixing the base 1 to the machine tool by bolts.

[0022] In the above, the first positioning platform 2 and the second positioning platform 3 are respectively provided at both ends of the base 1. The first positioning platform 2 and the second positioning platform 3 can be integrally manufactured with the base 1, or the first positioning platform 2 and the second positioning platform 3 can be fixed to the base 1 by bolts. The first positioning platform 2 is provided with a V-shaped positioning groove 4 on the side facing the second positioning platform 3. The special-shaped small and medium-sized parts to be processed are placed between the first positioning platform 2 and the second positioning platform 3. The cylindrical process table is clamped by the V-shaped positioning groove 4. The second positioning platform 3 is provided with a stop block 5. The stop block 5 can slide on the second positioning platform 3 to approach or move away from the first positioning platform 2. The special-shaped small and medium-sized parts to be processed are placed between the first positioning platform 2 and the second positioning platform 3. The cylindrical process table is clamped by the V-shaped positioning groove 4. The stop block 5 is adjusted to stop a plane of the special-shaped small and medium-sized parts, so that the special-shaped small and medium-sized parts are clamped on the fixture.

[0023] In this embodiment, in order to achieve the sliding adjustment of the abutting block 5, refer to Figures 1 to 2 As shown, the abutting block 5 includes a first movable block 501 and a second movable block 502. A strip-shaped hole 9 is provided along the long axis direction of the first movable block 501. An assembly bolt 6 for assembling the first movable block 501 to the second positioning table 3 is arranged in the strip-shaped hole 9. The second positioning table 3 is provided with a bolt hole matching the assembly bolt 6. When adjusting the distance between the abutting block 5 and the first positioning table 2, the setting of the strip-shaped hole 9 provides an avoidance for the assembly bolt 6, so that the first movable block 501 can slide and adjust its position normally. After the adjustment is completed, the assembly bolt 6 is screwed into the corresponding bolt hole to fix the position of the first movable block 501.

[0024] As Figures 1 to 2 shown, the second movable block 502 is slidably connected to one end of the first movable block 501 close to the first positioning table, and the end where the first movable block 501 is in contact with the second movable block 502 adopts a wedge-shaped inclined plane for sliding fit. A dovetail groove is provided on the wedge-shaped inclined plane of the first movable block 501 for connecting the second movable block 502. A dovetail slider 503 is provided on the wedge-shaped inclined plane of the second movable block 502 for connecting the first movable block 501. The dovetail slider 503 is slidably installed in the dovetail groove. At the same time, a pin hole is formed by enclosing between the dovetail groove and the dovetail slider. The pin hole is provided with a thread on the side of the second movable block. A threaded pin head 504 is rotatably arranged in the pin hole. The inner diameter of the pin hole is larger than the orifice of the pin hole, so that the threaded pin head 504 is restricted to rotate in the pin hole. When using a hex wrench to rotate the threaded pin head 504, the second movable block 502 threadedly connected to the threaded pin head 504 will move along the wedge-shaped inclined plane with the forward and reverse rotation of the threaded pin head 504, so as to tightly press the workpiece in the V-shaped groove.

[0025] In addition, in order to prevent the abutting block 5 from moving during the processing, as Figure 1 shown, a slot is further provided on the second positioning table 3. A stop block 8 is arranged in the slot. The stop block 8 blocks one end of the abutting block 5 away from the small special-shaped part. The stop block 8 is fixed in the slot by a fixing bolt 10. It can be imagined that before clamping the workpiece, the stop block 8 is taken out of the slot, the workpiece is placed between the first positioning table 2 and the second positioning table 3, and after the workpiece is tightly pressed against the V-shaped positioning groove 4 by the abutting block 5, the stop block 8 is inserted into the slot and fixed by the fixing bolt 10 to block behind the abutting block 5. The front of the abutting block 5 abuts against the workpiece, so as to firmly limit the workpiece on the fixture.

[0026] It can be seen that the embodiment of the present application provides a fixture for quickly clamping small and medium-sized special-shaped parts. When specifically clamping a workpiece, first remove the stopper 8 from the slot, then place the workpiece between the first positioning table 2 and the second positioning table 3, use the V-shaped positioning groove 4 to clamp the cylindrical process table, move the abutting block 5 to press the workpiece tightly into the V-shaped positioning groove 4, and use the assembly bolt 6 to fix the abutting block 5. Finally, insert the stopper 8 into the slot and fix it with the fixing bolt 10 to complete the quick clamping of the workpiece.

[0027] In the above embodiment, a buffer block 7 is provided on the groove surface of the V-shaped positioning groove 4. The buffer block 7 is a flexible cushion block, which can prevent bruising during the process of pressing the workpiece tightly into the V-shaped positioning groove 4 by the abutting block 5 and ensure the quality of the workpiece.

[0028] In addition, two end faces of the V-shaped positioning groove 4 on the side facing the second positioning table 3 are horizontally provided with rough positioning pins 11. The rough positioning pins 11 can be used to initially position the placement position of the workpiece, facilitating subsequent clamping of the workpiece.

[0029] In summary, the embodiment of the present application provides a fixture for quickly clamping small and medium-sized special-shaped parts. By providing the first positioning table 2 and the second positioning table 3 on the base 1, when processing, the small and medium-sized special-shaped parts to be processed are placed between the first positioning table 2 and the second positioning table 3. The V-shaped positioning groove 4 can clamp cylindrical process tables of different sizes, with strong versatility. At the same time, by adjusting the abutting block 5 to press the workpiece against the V-shaped positioning groove 4, quick clamping can be achieved, which is convenient and fast.

[0030] The above are only the preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A fixture for quickly clamping small and medium-sized special-shaped parts, characterized in that It includes a base, with a first positioning platform and a second positioning platform respectively arranged at two ends of the base. On one side of the first positioning platform facing the second positioning platform, there is a V-shaped positioning groove for clamping a cylindrical process platform, and the second positioning platform is provided with a pressing block for pressing an irregular small and medium-sized part against the V-shaped positioning groove.

2. The fixture for quickly clamping small and medium-sized special-shaped parts according to claim 1, wherein, The pressing block includes a first movable block that can approach and move away from the V-shaped positioning groove, and a second movable block movably connected to one end of the first movable block close to the V-shaped positioning groove. The end where the first movable block and the second movable block are in contact is in sliding fit with a wedge-shaped inclined plane. A dovetail groove is arranged on the wedge-shaped inclined plane of the first movable block for connecting the second movable block, and a dovetail slider is arranged on the wedge-shaped inclined plane of the second movable block for connecting the first movable block. A pin hole is formed by enclosing between the dovetail groove and the dovetail slider. A thread is provided on one side of the pin hole where the second movable block is located, and a threaded pin head is rotatably arranged in the pin hole.

3. The fixture for quickly clamping small and medium-sized special-shaped parts according to claim 1, wherein A buffer block is arranged on the groove surface of the V-shaped positioning groove.

4. The fixture for quickly clamping small and medium-sized special-shaped parts according to claim 1, characterized in that, A strip hole is arranged along the long axis direction of the pressing block, and an assembly bolt for assembling the pressing block on the second positioning platform is arranged in the strip hole.

5. The fixture for quickly clamping small and medium-sized special-shaped parts according to claim 1, characterized in that, A slot is further arranged on the second positioning platform, and a stop block is arranged in the slot to block one end of the pressing block away from the irregular small and medium-sized part.

6. The fixture for quickly clamping small and medium-sized special-shaped parts according to claim 1, characterized in that, Coarse positioning pins are horizontally arranged on two end faces of the V-shaped positioning groove on the side facing the second positioning platform.

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