High-precision positioning device for milling machine

Abstract

The utility model relates to the technical field of positioning, in particular to a high-precision positioning device for a milling machine, which comprises a base, positioning mechanisms are respectively arranged at two ends of the base in a sliding manner, a groove is arranged in the base, and an adjusting mechanism for adjusting the distance between the two positioning mechanisms is arranged in the groove. The positioning mechanism comprises a]-shaped mounting frame and a positioning clamping plate mounted on the mounting frame through a dismounting assembly, the dismounting assembly comprises a mounting groove formed in the vertical portion of the mounting frame, a connecting plate is arranged in the mounting groove in a matched mode, the bottom of the positioning clamping plate is fixed to the connecting plate, and a fixing plate is connected between the two transverse portions of the mounting frame. An inserting rod movably penetrates through the fixing plate, an inserting groove correspondingly matched with the inserting rod is formed in one side of the connecting plate, the inserting rod penetrates through the vertical portion of the mounting frame and then is inserted into the inserting groove, a limiting plate is fixed to the end, close to the vertical portion of the mounting frame, of the inserting rod, and the portion, between the limiting plate and the fixing plate, of the inserting rod is sleeved with a telescopic spring. And the other ends of the two insertion rods are connected with the same pull rod.

Description

Technical Field

[0001] The utility model relates to the technical field of positioning, in particular to a high-precision positioning device for a milling machine. Background Art

[0002] Milling machines mainly refer to machine tools that use milling cutters to process various surfaces of workpieces. Usually, the milling cutter mainly moves in rotation, and the movement of the workpiece and the milling cutter is the feed motion. It can process planes, grooves, various curved surfaces, gears, etc. In order to facilitate the positioning and processing of parts, most milling machines are equipped with positioning devices to fix the parts to ensure accurate positioning. The clamping head clamps the workpiece. Due to the variety of workpiece sizes, when clamping workpieces of different shapes, its clamping part cannot adapt to a variety of workpiece shapes, and its clamping part is not convenient to replace, resulting in poor clamping and positioning effects for workpieces of different shapes. Utility Model Content

[0003] In order to solve the above technical problems, the utility model specifically adopts the following technical solutions.

[0004] A high-precision positioning device for a milling machine is designed, comprising a base, positioning mechanisms are slidably provided at both ends of the base, and the two positioning mechanisms are symmetrically arranged, a groove is opened in the base, and an adjustment mechanism for adjusting the distance between the two positioning mechanisms is provided in the groove;

[0005] The positioning mechanism includes a "]"-shaped mounting frame and a positioning clamping plate installed on the mounting frame through a disassembly component, the disassembly component includes a mounting groove opened on the vertical part of the mounting frame, a connecting plate is matched in the mounting groove, the bottom of the positioning clamping plate is fixed to the connecting plate, a fixing plate is connected between the two lateral parts of the mounting frame, an insertion rod is movably inserted on the fixing plate, a slot corresponding to the insertion rod is opened on one side of the connecting plate, the insertion rod passes through the vertical part of the mounting frame and is inserted into the slot, a limiting plate is fixed on one end of the insertion rod close to the vertical part of the mounting frame, a telescopic spring is mounted on the insertion rod between the limiting plate and the fixing plate, and the other ends of the two insertion rods are connected to the same pull rod.

[0006] Preferably, the adjustment mechanism includes a bidirectional threaded rod rotatably arranged in the groove, a driving motor driving the bidirectional threaded rod to rotate, and a U-shaped moving block threadably matched with the bidirectional threaded rod, the two ends of the U-shaped moving block respectively slidingly extending out of the upper surface of the base and fixedly connected to the mounting frame.

[0007] Preferably, sliding openings slidably connected to the two ends of the moving block are respectively provided on the upper surface of the base, a sliding groove is provided between the two sliding openings on the same side of the base, a slider is slidably connected in the sliding groove, the two horizontal parts of the mounting frame are respectively connected to the top of the moving block, and the vertical part is connected to the slider.

[0008] Preferably, a clamping groove is provided on one side opposite to the two positioning clamping plates, and an anti-slip groove is provided in the clamping groove.

[0009] The beneficial effects of the utility model are:

[0010] The utility model can compress the compression spring under the action of the limit plate by pulling the pull rod, and then the insertion rod can be drawn out of the slot, thereby releasing the restriction on the connecting plate, and then the connecting plate and the positioning clamping plate are taken out, and then the positioning clamping plate adapted to the shape of the workpiece is replaced. When replacing, the connecting plate at the bottom of the positioning clamping plate is inserted into the installation groove, the pull rod is loosened, and the insertion rod is inserted into the slot on the connecting plate under the elastic action of the telescopic spring, so that the positioning clamping plate can be installed and fixed, and then different positioning clamping plates can be quickly replaced, so that it can meet the clamping and positioning of workpieces of different shapes. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0012] Figure 2 It is a schematic diagram of the structure of the cooperation between the moving block and the sliding opening, and between the slider and the opening;

[0013] Figure 3 It is a structural diagram of the regulating mechanism;

[0014] Figure 4 It is a schematic diagram of the main cross-sectional structure of the utility model;

[0015] Figure 5 yes Figure 1 A is an enlarged structural diagram;

[0016] Figure 6 It is a structural schematic diagram of the positioning splint;

[0017] The numbers in the figure are: 1 base, 2 driving motor, 3 sliding port, 4 sliding groove, 5 bidirectional threaded rod, 6 mounting frame, 7 mounting groove, 8 connecting plate, 9 slider, 10 moving block, 11 groove, 12 positioning splint, 13 limit plate, 14 plug rod, 15 telescopic spring, 16 fixed plate, 17 pull rod. DETAILED DESCRIPTION

[0018] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0019] Example 1

[0020] A high-precision positioning device for a milling machine, such as Figure 1 to Figure 2 As shown, it includes a base 1, and positioning mechanisms are slidably provided at both ends of the base 1, and the two positioning mechanisms are symmetrically arranged. A groove 11 is opened in the base 1, and an adjustment mechanism for adjusting the distance between the two positioning mechanisms is provided in the groove 11; the adjustment mechanism includes a bidirectional threaded rod 5 that rotates in the groove 11, a driving motor 2 that drives the bidirectional threaded rod 5 to rotate, and a U-shaped moving block 10 that is threadedly matched with the bidirectional threaded rod 5, and the two ends of the U-shaped moving block 10 slide and extend out of the upper surface of the base 1, respectively, and are fixedly connected to the mounting frame 6. The rotation of the bidirectional threaded rod 5 drives the two U-shaped moving blocks 10 to move closer to or away from each other, thereby driving the positioning mechanism to move.

[0021] The upper surface of the base 1 is provided with sliding openings 3 that are slidably connected to the two ends of the moving block 10. The cooperation between the sliding openings 3 and the moving block 10 limits the moving block 10 when the bidirectional threaded rod 5 drives the moving block 10 to move. A slide groove 4 is provided between the two sliding openings 3 on the same side of the base 1. A slider 9 is slidably connected in the slide groove 4. The two horizontal parts of the mounting frame 6 are respectively connected to the top of the moving block 10, and the vertical part is connected to the slider 9. The above structure makes the mounting frame 6 more stable when driving the positioning mechanism to move.

[0022] The positioning mechanism includes a "]"-shaped mounting frame 6 and a positioning clamping plate 12 installed on the mounting frame 6 through a disassembly component. A clamping groove is opened on the opposite side of the two positioning clamping plates 12, and anti-slip grooves are provided in the clamping groove. The disassembly component includes a mounting groove 7 opened on the vertical part of the mounting frame 6, and a connecting plate 8 is matched in the mounting groove 7. The bottom of the positioning clamping plate 12 is fixed to the connecting plate 8. A fixing plate 16 is connected between the two transverse parts of the mounting frame 6. An insertion rod 14 is movably penetrated on the fixing plate 16. A slot corresponding to the insertion rod 14 is opened on one side of the connecting plate 8. The insertion rod 14 passes through the vertical part of the mounting frame 6 and is inserted into the slot. A limiting plate 13 is fixed on one end of the insertion rod 14 close to the vertical part of the mounting frame 6. A telescopic spring 15 is installed on the insertion rod 14 between the limiting plate 13 and the fixing plate 16, and the other end of the two insertion rods 14 is connected to the same pull rod 17. The above structure cooperates with the insertion rod 14 and the slot on the connecting plate 8, and under the action of the telescopic spring 15, it is convenient to disassemble and assemble the positioning clamping plate 12, so as to facilitate the rapid replacement of the positioning clamping plate 12 to achieve the clamping and positioning of workpieces of different shapes.

[0023] When the utility model is used, first according to the shape of the workpiece, pull the pull rod 17, the telescopic spring 15 is in a compressed state under the action of the limit plate 13, and then drive the insertion rod 14 to be pulled out from the slot on the connecting plate 8, then take out the connecting plate 14 and the positioning clamping plate 13, replace the positioning clamping plate 13 that is adapted to the shape of the workpiece, and during installation, put the connecting plate 8 at the bottom of the positioning clamping plate into the installation groove 7, and then loosen the pull rod 17, and the insertion rod 14 is inserted into the slot on the connecting plate 8 under the action of the telescopic spring 15, that is, the replacement and installation of the positioning clamping plate is realized, and then start the driving motor 2, so that the bidirectional threaded rod 5 rotates to drive the two moving blocks 10 to approach each other, and then drive the two positioning clamping plates to approach each other, thereby realizing the clamping and positioning of workpieces of different shapes.

[0024] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A high-precision positioning device for a milling machine, characterized in that: It comprises a base (1), positioning mechanisms are slidably provided at both ends of the base (1), and the two positioning mechanisms are symmetrically arranged, a groove (11) is provided in the base (1), and an adjustment mechanism for adjusting the distance between the two positioning mechanisms is provided in the groove (11); The positioning mechanism comprises a "]"-shaped mounting frame (6) and a positioning clamping plate (12) mounted on the mounting frame (6) through a disassembly component, the disassembly component comprises a mounting groove (7) provided on a vertical portion of the mounting frame (6), a connecting plate (8) is provided in the mounting groove (7), the bottom of the positioning clamping plate (12) is fixed to the connecting plate (8), a fixing plate (16) is connected between two transverse portions of the mounting frame (6), and an insertion rod is movably provided on the fixing plate (16) (14), a slot corresponding to the insertion rod (14) is provided on one side of the connecting plate (8), the insertion rod (14) is inserted into the slot after passing through the vertical part of the mounting frame (6), a limiting plate (13) is fixed on one end of the insertion rod (14) close to the vertical part of the mounting frame (6), a telescopic spring (15) is mounted on the insertion rod (14) between the limiting plate (13) and the fixed plate (16), and the other ends of the two insertion rods (14) are connected to the same pull rod (17).

2. The high-precision positioning device for a milling machine according to claim 1, characterized in that: The adjustment mechanism comprises a bidirectional threaded rod (5) rotatably arranged in a groove (11), a driving motor (2) driving the bidirectional threaded rod (5) to rotate, and a U-shaped moving block (10) threadably matched with the bidirectional threaded rod (5), wherein both ends of the U-shaped moving block (10) respectively extend out of the upper surface of the base (1) and are fixedly connected to the mounting frame (6).

3. The high-precision positioning device for a milling machine according to claim 2, characterized in that: Sliding openings (3) slidably connected to the two ends of the moving block (10) are respectively provided on the upper surface of the base (1), a sliding groove (4) is provided between the two sliding openings (3) located on the same side of the base (1), a sliding block (9) is slidably connected in the sliding groove (4), the two transverse parts of the mounting frame (6) are respectively connected to the top of the moving block (10), and the vertical part is connected to the sliding block (9).

4. The high-precision positioning device for a milling machine according to claim 1, characterized in that: A clamping groove is provided on one side opposite to the two positioning clamping plates (12), and an anti-slip pattern is provided in the clamping groove.

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