Five-axis milling clamp facilitating curved surface machining

Abstract

The utility model relates to the technical field of clamps, in particular to a five-axis milling clamp convenient for curved surface machining, which comprises a clamp bottom plate, a plurality of moving grooves are arranged on two sides of the top end of the clamp bottom plate, a first clamping plate is slidably connected in the moving grooves, and a second clamping plate is movably clamped at the top end of the first clamping plate. A machining workpiece is placed between the clamp bottom plate and the second clamping plate, the outer wall of the machining workpiece is attached to one side of the first clamping plate, a limiting assembly is arranged at one end of the second clamping plate, and the limiting assembly fixes the position of the machining workpiece by limiting the position of the second clamping plate. Compared with the prior art, the position of the machined workpiece is not prone to shaking when the machined workpiece rotates or moves during machining, the effect that the machined workpiece is fixed during curved surface machining is better, and the size error of the machined workpiece is smaller.

Description

Technical Field

[0001] The utility model relates to the technical field of fixtures, in particular to a five-axis milling fixture which is convenient for curved surface processing. Background Art

[0002] Milling is a mechanical processing method that uses a milling cutter as a tool to process the surface of an object. Milling refers to the use of a rotating multi-edge tool to cut the workpiece. It is a highly efficient processing method. During milling, the cutting force is large, and it is intermittent cutting, resulting in large vibrations. Therefore, the clamping force of the milling machine fixture is required to be large, and the fixture stiffness and strength requirements are relatively high.

[0003] In the prior art, Chinese patent publication number CN215967480U proposes a five-axis milling fixture with a single-shot clamp applier. The fixture can perfectly adapt to raw materials of different lengths, reduce costs, reduce waiting time caused by fixture changeover, avoid clamping errors caused by dimensional errors between raw and unfinished materials, and can adapt to the processing of multiple raw materials, avoiding errors caused by raw material differences. The design and use costs are greatly reduced. However, in actual application, there are still problems when the five-axis milling fixture is used to process curved workpieces. Since the processing of curved surfaces requires the coordination of multiple axes and multi-faceted processing, the clamping requirements of the fixture are relatively high. It is necessary to ensure that the workpiece can be rotated or moved on multiple sides during processing without falling. However, the existing fixture only fixes the workpiece by fixing the side of the workpiece to fix the entire workpiece. This makes the relative position of the workpiece and the fixture easily change when processing certain angles during curved surface processing, resulting in large dimensional errors of the workpiece after processing. Therefore, we disclose a five-axis milling fixture that is convenient for curved surface processing. Utility Model Content

[0004] In view of this, the purpose of the present invention is to propose a five-axis milling fixture that is convenient for curved surface processing, so as to solve the problem that the existing fixture is prone to relative movement between the workpiece and the fixture when processing the curved surface of the workpiece, resulting in large dimensional errors of the workpiece after processing.

[0005] Based on the above-mentioned purpose, the utility model provides a five-axis milling fixture that is convenient for curved surface processing, including a fixture base plate, and a number of movable grooves are opened on both sides of the top of the fixture base plate. A first clamping plate is slidably connected in the movable groove, and a second clamping plate is movably clamped at the top of the first clamping plate. A workpiece is placed between the fixture base plate and the second clamping plate, and the outer wall of the workpiece is in contact with one side of the first clamping plate. A limiting component is provided at one end of the second clamping plate, and the limiting component fixes the position of the workpiece by limiting the position of the second clamping plate.

[0006] Preferably, both sides of the second clamp are fixedly connected with positioning plates, the bottom end of the positioning plate is penetrated by a first fixing rod, the top end of the clamp bottom plate is provided with several positioning grooves along the movable groove, the lower end of the first fixing rod is provided with a thread, and the positioning groove and the first fixing rod are threadedly connected.

[0007] Preferably, a second fixing rod passes through the upper end of the first fixing rod, a limiting slot is provided in the middle of the positioning plate, the second fixing rod passes through one side of the positioning plate and is movably engaged with the limiting slot, a slot is provided in the middle of the first fixing rod, and a blocking block is fixedly connected to the middle of the second fixing rod, and the blocking block is movably engaged with the slot.

[0008] Preferably, the second fixing rod and the first fixing rod are both T-shaped columns, and the positioning plate is an L-shaped plate.

[0009] Preferably, a plurality of limiting rods are fixedly connected to the bottom end of the second splint, and the limiting rods are movably sleeved with the corresponding first splints.

[0010] Preferably, the movable groove is a T-shaped groove, the first clamping plate is a T-shaped plate, and two first clamping plates form a group and are respectively fitted with two adjacent side surfaces of the workpiece.

[0011] The beneficial effects of the utility model are as follows: the clamp bottom plate limits the moving position of the first clamping plate and the second clamping plate through the moving groove, and the workpiece is restricted by the first clamping plate and the second clamping plate, so that the workpiece is not easily shaken when rotating or moving during processing, so that the workpiece is better fixed when processing curved surfaces, and the dimensional error of the workpiece after processing is smaller;

[0012] The positions of the first clamping plate and the second clamping plate can be adjusted according to the specifications of the workpiece to be processed. After that, the first fixing rod passes through the positioning plate and is fixed relatively to the fixture base plate through the positioning groove. The connection direction of the first fixing rod and the fixture base plate is perpendicular to the movement direction of the first clamping plate and the second clamping plate after being subjected to force, so that the position of the first fixing rod after connecting the positioning plate and the clamp base plate is not easy to move, so that the positions of the positioning plate and the second clamping plate are fixed, thereby fixing the position of the workpiece to be processed, making the practicality of the fixture better. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only for the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0014] Figure 1This is a schematic diagram of an embodiment of the utility model;

[0015] Figure 2 This is a schematic diagram of the connection structure of the positioning plate, the positioning groove and the first fixing rod of the utility model;

[0016] Figure 3 This is a partially cutaway three-dimensional structural diagram of the first splint of the present invention;

[0017] Figure 4 It is a partially cutaway three-dimensional structural schematic diagram of the first fixing rod of the present invention.

[0018] The following are marked in the figure:

[0019] 1. Fixture base; 2. Moving slot; 3. First clamping plate; 4. Second clamping plate; 5. Positioning plate; 6. Positioning slot; 7. First fixing rod; 8. Second fixing rod; 9. Limiting slot; 10. Workpiece; 11. Limiting rod; 12. Clamping block; 13. Clamping slot. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with specific embodiments.

[0021] It should be noted that, unless otherwise defined, the technical or scientific terms used in this utility model should have the usual meanings understood by people with ordinary skills in the field to which this utility model belongs. The "first", "second" and similar words used in this utility model do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative position relationships. When the absolute position of the object being described changes, the relative position relationship may also change accordingly.

[0022] like Figure 1-Figure 4As shown, a five-axis milling fixture convenient for curved surface processing includes a fixture base plate 1, a plurality of movable grooves 2 are opened on both sides of the top of the fixture base plate 1, a first clamping plate 3 is slidably connected in the movable groove 2, and a second clamping plate 4 is movably clamped on the top of the first clamping plate 3, a workpiece 10 is placed between the fixture base plate 1 and the second clamping plate 4, the outer wall of the workpiece 10 is fitted with one side of the first clamping plate 3, a limiting component is provided at one end of the second clamping plate 4, and the limiting component fixes the position of the workpiece 10 by limiting the position of the second clamping plate 4, a positioning plate 5 is fixedly connected on both sides of the second clamping plate 4, and a first fixing rod 7 is passed through the bottom end of the positioning plate 5. The top of the base plate 1 is provided with a plurality of positioning grooves 6 along the movable groove 2, and the lower end of the first fixing rod 7 is provided with a thread, and the positioning groove 6 and the first fixing rod 7 are threadedly connected. When in use, a plurality of movable grooves 2 are provided on both sides of the top of the clamp base plate 1, and the first clamping plate 3 is slidably connected in the movable groove 2. The top of the first clamping plate 3 is movably connected with the second clamping plate 4, so that the clamp base plate 1 limits the moving position of the first clamping plate 3 and the second clamping plate 4 through the movable groove 2. A workpiece 10 is placed between the clamp base plate 1 and the second clamping plate 4, and the outer wall of the workpiece 10 is fitted with one side of the first clamping plate 3. The position of the second clamping plate 4 is fixed by limiting the position of the second clamping plate 4 through the limit assembly. The position of the workpiece 10 is such that the position of the workpiece 10 placed on the top of the fixture base plate 1 is limited by the first clamping plate 3 and the second clamping plate 4, so that the workpiece 10 is not easily shaken when it is rotated or moved during processing, so that the workpiece 10 is better fixed when performing curved surface processing, and the dimensional error of the workpiece 10 after processing is smaller. The positioning plates 5 are fixedly connected on both sides of the second clamping plate 4 so that the positioning plates 5 can limit the position of the second clamping plate 4. The first fixing rod 7 is passed through the bottom end of the positioning plate 5. The top of the fixture base plate 1 is provided with a plurality of positioning grooves 6 along the movable groove 2. The first fixing rod 7 is fixed to the bottom end of the second clamping plate 5. The lower end is provided with a thread, and the positioning groove 6 and the first fixing rod 7 are threadedly connected, so that the position of the first clamping plate 3 and the second clamping plate 4 can be adjusted according to the specifications of the workpiece 10 to be processed. After that, the first fixing rod 7 passes through the positioning plate 5 and is relatively fixed to the clamp base plate 1 through the positioning groove 6, and the connection direction of the first fixing rod 7 and the clamp base plate 1 is perpendicular to the movement direction of the first clamping plate 3 and the second clamping plate 4 after being subjected to force, so that the position of the first fixing rod 7 after connecting the positioning plate 5 and the clamp base plate 1 is not easy to move, so that the position of the positioning plate 5 and the second clamping plate 4 is fixed, thereby fixing the position of the workpiece 10 to be processed, making the clamp more practical.

[0023] As a preferred implementation in this embodiment, Figure 2-Figure 4As shown, the upper end of the first fixing rod 7 is penetrated by the second fixing rod 8, the middle part of the positioning plate 5 is provided with a limiting slot 9, the second fixing rod 8 is penetrated to one side of the positioning plate 5 and is movably engaged with the limiting slot 9, the middle part of the first fixing rod 7 is provided with a slot 13, the middle part of the second fixing rod 8 is fixedly connected with a clamping block 12, the clamping block 12 is movably engaged with the slot 13, the second fixing rod 8 and the first fixing rod 7 are both T-shaped columns, the positioning plate 5 is an L-shaped plate, the bottom end of the second splint 4 is fixedly connected with a plurality of limiting rods 11, the limiting rods 11 are movably sleeved with the relative first splint 3, the movable groove 2 is a T-shaped slot, the first splint 3 is a T-shaped plate, the two first splints 3 are a group and are respectively fitted with the two side surfaces adjacent to the workpiece 10, The second fixing rod 8 is passed through the upper end of the first fixing rod 7, and a limiting groove 9 is provided in the middle of the positioning plate 5. The second fixing rod 8 passes through one side of the positioning plate 5 and is movably engaged with the limiting groove 9, so that the second fixing rod 8 is engaged with the limiting groove 9 after passing through the first fixing rod 7, so that the second fixing rod 8 limits the relative position of the first fixing rod 7 and the positioning plate 5 to be fixed, so that when the first fixing rod 7 moves due to vibration during processing, the position of the first fixing rod 7 is limited by the second fixing rod 8, thereby preventing the first fixing rod 7 from shaking due to vibration, further enhancing the stability of the first fixing rod 7, thereby improving the clamping stability of the first clamping plate 3 and the second clamping plate 4 on the processing workpiece 10, A slot 13 is provided in the middle of the first fixing rod 7, and a block 12 is fixedly connected to the middle of the second fixing rod 8. The block 12 is an elastic telescopic structure, and the block 12 is movably connected to the slot 13, so that when the second fixing rod 8 passes through the first fixing rod 7, the block 12 is driven and squeezed into the slot 13, so that the slot 13 limits the position of the second fixing rod 8 through the block 12, so that the relative positions of the second fixing rod 8, the first fixing rod 7 and the positioning plate 5 are fixed, so that when the fixture base plate 1 drives the workpiece 10 to rotate, the position of the second fixing rod 8 is fixed, thereby ensuring the normal use of the fixture. Since the second fixing rod 8 and the first fixing rod 7 are both T-shaped columns, the second fixing rod 8 and the first fixing rod 7 are easy to use. The positioning plate 5 is an L-shaped plate, which makes it easy to fix the positioning plate 5. A number of limit rods 11 are fixedly connected to the bottom end of the second clamping plate 4. The limit rods 11 are movably connected to the corresponding first clamping plate 3, so that the second clamping plate 4 can move vertically, so that the second clamping plate 4 can clamp workpieces of different specifications, making the device more practical. The movable groove 2 is a T-shaped groove and the first clamping plate 3 is a T-shaped plate, so that the moving direction of the first clamping plate 3 is fixed. The two first clamping plates 3 are grouped together and respectively fit with the two side surfaces adjacent to the workpiece 10, so that the first clamping plate 3 can cooperate with the second clamping plate 4 to fix the position of the workpiece 10 in all directions, ensuring that the position of the workpiece 10 is still effectively fixed after rotation.

[0024] Those skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples. Within the scope of the present invention, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in detail for the sake of simplicity.

[0025] The present invention is intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the scope of protection of the present invention.

Claims

1. A five-axis milling fixture for facilitating curved surface machining, comprising a fixture base plate (1), characterized in that: A plurality of movable grooves (2) are provided on both sides of the top of the clamp base plate (1), a first clamp plate (3) is slidably connected in the movable groove (2), a second clamp plate (4) is movably clamped at the top of the first clamp plate (3), a workpiece (10) is placed between the clamp base plate (1) and the second clamp plate (4), an outer wall of the workpiece (10) is fitted with one side of the first clamp plate (3), a limiting component is provided at one end of the second clamp plate (4), and the limiting component fixes the position of the workpiece (10) by limiting the position of the second clamp plate (4).

2. The five-axis milling fixture for curved surface machining according to claim 1, characterized in that: Both sides of the second clamping plate (4) are fixedly connected with a positioning plate (5), the bottom end of the positioning plate (5) is penetrated by a first fixing rod (7), the top end of the clamp bottom plate (1) is provided with a plurality of positioning grooves (6) along the movable groove (2), the lower end of the first fixing rod (7) is provided with a thread, and the positioning groove (6) and the first fixing rod (7) are threadedly connected.

3. The five-axis milling fixture for curved surface machining according to claim 2, characterized in that: The upper end of the first fixing rod (7) is penetrated by a second fixing rod (8), a limiting groove (9) is provided in the middle of the positioning plate (5), the second fixing rod (8) is penetrated to one side of the positioning plate (5) and is movably engaged with the limiting groove (9), a clamping groove (13) is provided in the middle of the first fixing rod (7), a clamping block (12) is fixedly connected to the middle of the second fixing rod (8), and the clamping block (12) is movably engaged with the clamping groove (13).

4. The five-axis milling fixture for facilitating curved surface machining according to claim 3, characterized in that: The second fixing rod (8) and the first fixing rod (7) are both T-shaped columns, and the positioning plate (5) is an L-shaped plate.

5. The five-axis milling fixture for curved surface machining according to claim 1, characterized in that: The bottom end of the second clamping plate (4) is fixedly connected to a plurality of limiting rods (11), and the limiting rods (11) are movably sleeved with the corresponding first clamping plates (3).

6. The five-axis milling fixture for curved surface machining according to claim 1, characterized in that: The movable groove (2) is a T-shaped groove, the first clamping plate (3) is a T-shaped plate, and two first clamping plates (3) form a group and are respectively fitted with two adjacent side surfaces of the workpiece (10).

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