Numerical control machine tool positioning tool

Abstract

The utility model discloses a numerical control machine tool positioning tool, and relates to the technical field of numerical control manufacturing. The clamping device comprises a base, an opening and closing driving mechanism is arranged on the base, U-shaped frames are arranged on two movable portions of the opening and closing driving mechanism respectively, adjustable positioning mechanisms used for clamping workpieces are arranged on the U-shaped frames, and the opening and closing driving mechanism is used for driving the two adjustable positioning mechanisms to be opened and closed synchronously so as to clamp the workpieces. And a locking frame for locking the movable part of the adjustable positioning mechanism is arranged on the U-shaped frame. According to the utility model, the clamping parts of the two groups of adjustable positioning mechanisms are close to each other so as to clamp and fix a workpiece, otherwise, the clamping parts of the two groups of adjustable positioning mechanisms are far away from each other so as to release the clamping of the workpiece, and when the locking frame is lifted up, the locking of the clamping parts of the adjustable positioning mechanisms is released; according to the adjustable positioning mechanism, the clamping parts of the adjustable positioning mechanism can be switched, and a rectangular or cylindrical workpiece can be fixed.

Description

Technical Field

[0001] The utility model relates to the technical field of numerical control manufacturing, in particular to a positioning tool for a numerical control machine tool. Background Art

[0002] CNC machine tools are automated machines that precisely execute predetermined control programs. Compared to traditional machining methods, CNC machine tools can produce more complex and precise parts, have a wider range of applications, and significantly improve production efficiency and quality consistency. CNC machine tool positioning fixtures are devices used on CNC machine tools to secure and position workpieces.

[0003] In the process of CNC machine tools processing workpieces, common workpieces are rectangular and cylindrical. However, traditional CNC machine tools' rapid positioning tooling cannot clamp and fix rectangular and cylindrical workpieces. The corresponding clamping components need to be replaced for clamping, resulting in high processing costs and cumbersome operations for replacing clamping components.

[0004] Therefore, a positioning fixture for CNC machine tools is proposed. Utility Model Content

[0005] The purpose of the present invention is to solve the problems raised in the above background technology, and the present invention provides a positioning tool for a CNC machine tool.

[0006] In order to achieve the above-mentioned purpose, the present invention specifically adopts the following technical solutions:

[0007] A positioning tool for a CNC machine tool comprises a base, an opening and closing drive mechanism is provided on the base, and two movable parts of the opening and closing drive mechanism are each equipped with a U-shaped frame, an adjustable positioning mechanism for clamping a workpiece is provided on the U-shaped frame, the opening and closing drive mechanism is used to drive two sets of adjustable positioning mechanisms to open and close synchronously for clamping the workpiece, and a locking frame is provided on the U-shaped frame for locking the movable part of the adjustable positioning mechanism.

[0008] Furthermore, the surface of the base is designed with at least four groups of lifting rings, several groups of lifting rings are arranged in a rectangular array, and several groups of lifting rings are used for lifting and transporting the positioning tooling.

[0009] Furthermore, a fixing assembly is provided on the surface of the base to fix the positioning tool to the workbench of the CNC machine tool. The fixing assembly includes at least four groups of protrusions fixed on the surface of the base. A threaded column is movably inserted on the surface of the protrusion. A nut is provided on the surface of the threaded column and on the upper side of the protrusion. A connecting plate is fixedly installed on the end of the threaded column.

[0010] Furthermore, the opening and closing drive mechanism includes a groove body opened on the surface of the base, a first bidirectional threaded rod is rotatably inserted on the base, the surface thread sleeve of the first bidirectional threaded rod is provided with two sets of movable seats, and the movable seats and the U-shaped frame are fixedly installed.

[0011] Furthermore, the adjustable positioning mechanism includes an adjusting threaded rod threadedly inserted into the U-shaped frame, and a positioning block is rotatably installed on the bottom end of the adjusting threaded rod, an arc-shaped portion is provided on one side of the positioning block, and a groove is provided on the other side of the positioning block, and a second bidirectional threaded rod is rotatably installed in the groove, and the surface thread sleeve of the second bidirectional threaded rod is provided with two sets of clamping blocks for secondary positioning and clamping of the workpiece.

[0012] Furthermore, a locking recessed hole is provided on the top surface of the positioning block, and the plug-in end of the locking frame is arranged corresponding to the locking recessed hole. When the locking frame is plugged into the locking recessed hole, the positioning block is in a locked state.

[0013] The beneficial effects of the utility model are as follows:

[0014] The locking frame is used to lock and limit the clamping part of the adjustable positioning mechanism, and the workpiece is placed on the top surface of the base. The opening and closing drive mechanism is used to synchronize the two groups of opening and closing drive mechanisms and the adjustable positioning mechanism to approach or move away from each other. The clamping parts of the two groups of adjustable positioning mechanisms are brought close to each other to clamp and fix the workpiece. Conversely, the clamping parts of the two groups of adjustable positioning mechanisms move away from each other to release the clamping of the workpiece. When the locking frame is lifted, the lock on the clamping part of the adjustable positioning mechanism is released, so that the clamping part of the adjustable positioning mechanism can be switched, so that rectangular or cylindrical workpieces can be fixed. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the three-dimensional structure of the utility model;

[0016] Figure 2 It is a front sectional view of the utility model;

[0017] Figure 3 It is a schematic diagram of the local structure of the utility model;

[0018] Figure 4 It is a schematic diagram of the fixing assembly of the utility model;

[0019] Figure 5 It is a partial schematic diagram of the adjustable positioning mechanism of the utility model;

[0020] Figure numerals: 1. base; 2. opening and closing drive mechanism; 201. trough body; 202. first bidirectional threaded rod; 203. movable seat; 3. U-shaped frame; 4. adjustable positioning mechanism; 401. adjusting threaded rod; 402. positioning block; 403. arc-shaped portion; 404. second bidirectional threaded rod; 405. clamping block; 406. locking recess; 5. locking frame; 6. lifting ring; 7. fixing assembly; 701. protrusion; 702. threaded column; 703. connecting plate; 704. nut. DETAILED DESCRIPTION

[0021] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0022] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are also within the scope of protection of the present invention.

[0023] It should be noted that similar reference numerals and letters represent similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings. In addition, the terms "first," "second," etc. are used only to distinguish the descriptions and are not to be understood as indicating or implying relative importance.

[0024] In the description of the embodiments of the present invention, it should be noted that the terms "inside", "outside", "upper", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the product of the present invention is usually placed when in use. They are only for the convenience of describing the present invention 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. Therefore, they cannot be understood as a limitation on the present invention.

[0025] like Figures 1 to 5As shown, a CNC machine tool positioning tool comprises a base 1, an opening and closing drive mechanism 2 is provided on the base 1, and two movable parts of the opening and closing drive mechanism 2 are equipped with a U-shaped frame 3, and an adjustable positioning mechanism 4 for clamping a workpiece is provided on the U-shaped frame 3. The opening and closing drive mechanism 2 is used to drive the two sets of adjustable positioning mechanisms 4 to open and close synchronously for clamping the workpiece, and a locking frame 5 is provided on the U-shaped frame 3 for locking the movable part of the adjustable positioning mechanism 4. More specifically, the locking frame 5 is used to lock and limit the clamping part of the adjustable positioning mechanism 4, and the workpiece is placed on the top surface of the base 1. The opening and closing drive mechanism 2 is used to synchronize the two groups of opening and closing drive mechanisms 2 and the adjustable positioning mechanism 4 to approach or move away from each other. The clamping parts of the two groups of adjustable positioning mechanisms 4 are brought close to each other to clamp and fix the workpiece. Conversely, the clamping parts of the two groups of adjustable positioning mechanisms 4 move away from each other to release the clamping of the workpiece. When the locking frame 5 is lifted, the lock on the clamping part of the adjustable positioning mechanism 4 is released, so that the clamping part of the adjustable positioning mechanism 4 can be switched, so that rectangular or cylindrical workpieces can be fixed.

[0026] The surface of the base 1 is designed with at least four sets of lifting rings 6, which are arranged in a rectangular array and are used for lifting and transporting the positioning tool. More specifically, the several sets of lifting rings 6 on the top surface of the base 1 make it convenient to transport and lift the positioning tool.

[0027] The surface of the base 1 is provided with a fixing assembly 7 to fix the positioning fixture to the workbench of the CNC machine tool. The fixing assembly 7 includes at least four groups of protrusions 701 fixed to the surface of the base 1. The surface of the protrusion 701 is movably plugged with a threaded column 702. The surface of the threaded column 702 and the upper side of the protrusion 701 are threadedly sleeved with a nut 704. The end of the threaded column 702 is fixedly installed with a connecting plate 703. More specifically, the base 1 is transported to the workbench of the CNC machine tool through the lifting ring 6. At this time, the connecting plate 703 is located in the groove on the surface of the workbench. This is well known to those skilled in the art and will not be described in detail here. By rotating the nut 704, the threaded column 702 and the connecting plate 703 are moved vertically upward, so that the connecting plate 703 is tightly fitted with the groove of the workbench, thereby fixing the base 1.

[0028] The opening and closing drive mechanism 2 includes a groove body 201 formed on the surface of the base 1. A first bidirectional threaded rod 202 is rotatably inserted into the base 1. Two sets of movable seats 203 are threadedly sleeved on the surface of the first bidirectional threaded rod 202, and the movable seats 203 and the U-shaped frame 3 are fixedly installed. More specifically, by rotating the first bidirectional threaded rod 202, the movable seats 203 are threadedly sleeved on the surface of the first bidirectional threaded rod 202, so that the movable seats 203 move closer to or farther away from each other within the groove body 201. By the two sets of movable seats 203 moving closer to each other, the workpiece is clamped and fixed by the clamping portion of the adjustable positioning mechanism 4. Conversely, when the two sets of movable seats 203 move away from each other, the workpiece is released from fixation.

[0029] The adjustable positioning mechanism 4 includes an adjusting threaded rod 401 threadedly inserted into the U-shaped frame 3, and a positioning block 402 is rotatably installed at the bottom end of the adjusting threaded rod 401. An arc portion 403 is provided on one side of the positioning block 402, and a groove is provided on the other side of the positioning block 402, and a second bidirectional threaded rod 404 is rotatably installed in the groove, and two sets of clamping blocks 405 are threadedly sleeved on the surface of the second bidirectional threaded rod 404 for secondary positioning and clamping of the workpiece. More specifically, two groups of movable seats 203 drive two groups of positioning blocks 402 to approach each other so that the workpiece can be clamped. The positioning block 402 has a side with a clamping block 405 to clamp the rectangular workpiece. At the same time, the second bidirectional threaded rod 404 drives the two groups of clamping blocks 405 to approach each other to achieve secondary clamping of the rectangular workpiece, thereby improving the accuracy of clamping the rectangular workpiece. The locking frame 5 is used to release the lock of the positioning block 402, and the positioning block 402 is rotated so that the end faces of the arc-shaped portion 403 correspond to each other. The cylindrical workpiece is clamped by the arc-shaped portion 403 on the surface of the positioning block 402. The vertical height of the positioning block 402 can be adjusted by rotating the adjusting threaded rod 401, so that it can be adjusted according to the thickness of the workpiece.

[0030] The top surface of the positioning block 402 is provided with a locking recess 406, and the plug-in end of the locking frame 5 is arranged corresponding to the locking recess 406. When the locking frame 5 is inserted into the locking recess 406, the positioning block 402 is locked. More specifically, the plug-in end of the locking frame 5 is inserted into the locking recess 406 on the top surface of the positioning block 402, thereby locking the positioning block 402. By pulling up the locking frame 5, the locking of the positioning block 402 is released, allowing the positioning block 402 to be rotated, conveniently switching the positioning block 402 according to the type of workpiece, and facilitating clamping according to the type of workpiece.

[0031] In summary: the clamping part of the adjustable positioning mechanism 4 is locked and limited by the locking frame 5, and the workpiece is placed on the top surface of the base 1. The two groups of opening and closing drive mechanisms 2 and the adjustable positioning mechanism 4 are synchronously moved closer to or farther away from each other through the opening and closing drive mechanism 2. The workpiece is clamped and fixed by the clamping parts of the two groups of adjustable positioning mechanisms 4 approaching each other. Conversely, the clamping parts of the two groups of adjustable positioning mechanisms 4 move away from each other to release the clamping of the workpiece. When the locking frame 5 is lifted, the lock on the clamping part of the adjustable positioning mechanism 4 is released, so that the clamping part of the adjustable positioning mechanism 4 can be switched, so that rectangular or cylindrical workpieces can be fixed.

[0032] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions merely illustrate the principles of the present invention. Various changes and improvements are possible without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed for the present invention is defined by the appended claims and their equivalents.

Claims

1. A CNC machine tool positioning fixture, characterized in that: The invention comprises a base (1), an opening and closing driving mechanism (2) is provided on the base (1), and two movable parts of the opening and closing driving mechanism (2) are both provided with a U-shaped frame (3), an adjustable positioning mechanism (4) for clamping a workpiece is provided on the U-shaped frame (3), the opening and closing driving mechanism (2) is used to drive two sets of adjustable positioning mechanisms (4) to open and close synchronously for clamping the workpiece, and a locking frame (5) is provided on the U-shaped frame (3) for locking the movable part of the adjustable positioning mechanism (4).

2. A CNC machine tool positioning fixture according to claim 1, characterized in that: The surface of the base (1) is designed with at least four groups of lifting rings (6), and several groups of lifting rings (6) are arranged in a rectangular array, and several groups of lifting rings (6) are used for lifting and transporting the positioning tool.

3. A CNC machine tool positioning fixture according to claim 1, characterized in that: The surface of the base (1) is provided with a fixing assembly (7) for fixing the positioning fixture to the workbench of the CNC machine tool. The fixing assembly (7) comprises at least four groups of protrusions (701) fixed to the surface of the base (1). The surfaces of the protrusions (701) are movably plugged with threaded columns (702). Nuts (704) are threadedly sleeved on the surfaces of the threaded columns (702) and located on the upper side of the protrusions (701). A connecting plate (703) is fixedly installed at the end of the threaded column (702).

4. A CNC machine tool positioning fixture according to claim 1, characterized in that: The opening and closing drive mechanism (2) comprises a groove body (201) provided on the surface of a base (1); a first bidirectional threaded rod (202) is rotatably plugged into the base (1); two sets of movable seats (203) are threadedly sleeved on the surface of the first bidirectional threaded rod (202); and the movable seats (203) and the U-shaped frame (3) are fixedly installed.

5. A CNC machine tool positioning fixture according to claim 1, characterized in that: The adjustable positioning mechanism (4) comprises an adjusting threaded rod (401) threadedly plugged into the U-shaped frame (3), and a positioning block (402) is rotatably mounted on the bottom end of the adjusting threaded rod (401), an arc portion (403) is provided on one side of the positioning block (402), and a groove is provided on the other side of the positioning block (402), and a second bidirectional threaded rod (404) is rotatably mounted in the groove, and two groups of clamping blocks (405) are threadedly sleeved on the surface of the second bidirectional threaded rod (404) for positioning and secondary clamping of the workpiece.

6. A CNC machine tool positioning fixture according to claim 5, characterized in that: The top surface of the positioning block (402) is provided with a locking recess (406), and the plug-in end of the locking frame (5) is arranged corresponding to the locking recess (406). When the locking frame (5) is plugged into the locking recess (406), the positioning block (402) is in a locked state.

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