Clamping tool of numerical control milling machine

Abstract

The invention discloses a numerical control milling machine clamping tool which comprises a base, a containing groove is formed in the upper surface of the base, a positioning piece for positioning the tool is arranged in the containing groove, a positioning plate is arranged at the bottom of the base, and a plurality of sets of evenly-distributed fan-shaped grooves are formed in the bottom of the positioning plate. A rotating shaft is rotationally arranged in the fan-shaped groove, a cam is arranged on the side face of the part, located in the fan-shaped groove, of the rotating shaft, a gear is arranged on the side face of the part, located in the positioning plate, of the rotating shaft, and a worm meshed with the gear is rotationally arranged in the positioning plate. According to the clamping tool of the numerical control milling machine, a part can be restrained and positioned from three directions, and the part can be conveniently and rapidly aligned, so that the working efficiency is improved; and the cam can be adjusted according to the size of the groove in the workbench, so that the positioning plate can be suitable for grooves of different sizes, clamping and positioning of the tool are facilitated, and therefore cost is saved, operation is easy, and use is convenient.

Description

Technical Field

[0001] The invention relates to the technical field of machining centers, in particular to a clamping tool for a numerically controlled milling machine. Background Art

[0002] In mechanical processing production, there are many square parts on CNC milling machines and machining center machines, especially for the processing of large quantities or square parts of similar sizes. When processing such parts, vises are mainly used for clamping, but vise clamping can only be clamped from two sides, without constraints in other directions, so it will increase the single-piece alignment time of batch parts, thereby reducing work efficiency; and the groove widths used for clamping fixtures on different milling machine workbenches are different, resulting in the need to design the positioning strip at the bottom of the clamping fixture according to the grooves, which increases costs and is inconvenient to use. Summary of the invention

[0003] The technical problem to be solved by the present invention is to overcome the existing defects and provide a CNC milling machine clamping tooling that can constrain and position parts from three directions, facilitate rapid alignment of parts, and thus improve work efficiency; the cam can also be adjusted according to the size of the groove on the workbench so that the positioning plate can be suitable for grooves of different sizes, which is convenient for the clamping and positioning of the tooling, thereby saving costs, being simple to operate, and easy to use, and can effectively solve the problems in the background technology.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a CNC milling machine clamping tool, comprising a base, a placement groove is provided on the upper surface of the base, a positioning piece for positioning the tool is provided inside the placement groove, a positioning plate is provided at the bottom of the base, a plurality of groups of evenly distributed fan-shaped grooves are provided at the bottom of the positioning plate, a rotating shaft is rotatably provided inside the fan-shaped groove, a cam is provided on the side of the rotating shaft located inside the fan-shaped groove, a gear is provided on the side of the rotating shaft located inside the positioning plate, and a worm gear meshing with the gear is rotatably provided inside the positioning plate.

[0005] As a preferred technical solution of the present invention, the positioning member includes a slide groove opened at one end of the placement groove, and a positioning slider is slidably arranged inside the slide groove.

[0006] As a preferred technical solution of the present invention, a lug plate is provided on one side of the positioning slider close to the edge of the base, and a fastening bolt is threadedly connected inside the threaded hole on the lug plate.

[0007] As a preferred technical solution of the present invention, the positioning member further comprises a tooling strip, a screw hole is provided on the side of the base, and the internal thread of the screw hole is connected with a clamping screw for squeezing the tooling strip.

[0008] As a preferred technical solution of the present invention, positioning grooves are provided on the sides of the tooling pressure strip corresponding to the clamping screws.

[0009] As a preferred technical solution of the present invention, a handle is provided at one end of the worm exposed on the outside of the positioning plate, and a groove is provided at the bottom of the base corresponding to the handle.

[0010] As a preferred technical solution of the present invention, the protrusions at the front and rear ends of the base are provided with pressure plate grooves, one of the protrusions is provided with two pressure plate grooves, and the other protrusion is provided with a pressure plate groove in the middle.

[0011] Compared with the prior art, the present invention has the following beneficial effects: The CNC milling machine clamping tooling of the example of the present invention can constrain and position parts from three directions, which is convenient for rapid alignment of parts, thereby improving work efficiency; the cam can also be adjusted according to the size of the groove on the workbench so that the positioning plate can be suitable for grooves of different sizes, which is convenient for the clamping and positioning of the tooling, thereby saving costs, simple operation, and easy use. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 for Figure 1 Schematic diagram of the left view structure; Figure 3 for Figure 1 Schematic diagram of the structure viewed from above; Figure 4 It is a schematic diagram of the matching structure of the gear and the worm of the present invention; Figure 5 It is a schematic diagram of the present invention when used.

[0013] In the figure: 1 base, 2 pressure plate groove, 3 positioning plate, 4 screw hole, 41 clamping screw, 5 tooling pressure strip, 51 positioning groove, 6 slide groove, 7 positioning slide block, 71 ear plate, 72 fastening bolt, 8 rotating shaft, 81 gear, 82 cam, 9 worm, 91 handle. DETAILED DESCRIPTION

[0014] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0015] See also Figure 1-5The present invention provides a technical solution: a CNC milling machine clamping tool, comprising a base 1, a placement groove is provided on the upper surface of the base 1, a positioning piece for positioning the tool is provided inside the placement groove, a positioning plate 3 is provided at the bottom of the base 1, and a plurality of evenly distributed fan-shaped grooves are provided at the bottom of the positioning plate 3, a rotating shaft 8 is rotatably arranged inside the fan-shaped groove, a cam 82 is provided on the side of the rotating shaft 8 located inside the fan-shaped groove, a gear 81 is provided on the side of the rotating shaft 8 located inside the positioning plate 3, a worm 9 meshing with the gear 81 is rotatably arranged inside the positioning plate 3, and the positioning plate 3 is adjusted according to the width of the groove at the milling machine worktable. Specifically, the worm 9 is rotated by the handle 91, and the gear 81 is driven to rotate when the worm 9 rotates, and the gear 81 drives the cam 82 to rotate through the rotating shaft 8. During the rotation of the cam 82, the protruding part rotates outward from the fan-shaped groove, so that the cam 82 is clamped into the inside of the groove of the milling machine worktable to complete the tool positioning.

[0016] Furthermore, the positioning member includes a slide groove 6 opened at one end of the placement groove, a positioning slider 7 is slidably arranged inside the slide groove 6, an ear plate 71 is provided on the side of the positioning slider 7 close to the edge of the base 1, and a fastening bolt 72 is threadedly connected to the threaded hole on the ear plate 71. The positioning slider 7 is moved along the slide groove 6 to a suitable position, and the fastening bolt 72 is rotated to position the ear plate 71, thereby positioning the positioning slider 7.

[0017] Furthermore, the positioning part also includes a tooling strip 5, a screw hole 4 is opened on the side of the base 1, and the internal thread of the screw hole 4 is connected to a clamping screw 41 for squeezing the tooling strip 5. A positioning groove 51 is opened on the side of the tooling strip 5 corresponding to the clamping screw 41. The part is placed in the placement groove, and the part is in contact with a side of the placement groove away from the tooling strip 5 and the positioning slider 7; the tooling strip 5 is placed in contact with the part, and the clamping screw 41 is turned, and the clamping screw 41 extrude and position the tooling strip 5, thereby completing the fixation of the part.

[0018] Furthermore, a handle 91 is provided at one end of the worm 9 exposed outside the positioning plate 3 , and a groove is provided at the bottom of the base 1 corresponding to the handle 91 , so that the worm 9 can be rotated by the handle 91 .

[0019] Furthermore, pressure plate grooves 2 are provided on the protrusions at the front and rear ends of the base 1, two pressure plate grooves 2 are provided on one of the protrusions, and a pressure plate groove 2 is provided in the middle of the other protrusion, so that the external pressure plate can be pressed into the position of the pressure plate groove 2 to tighten the tooling.

[0020] When using: The positioning plate 3 is adjusted according to the width of the groove of the milling machine worktable, specifically: the worm 9 is rotated by the handle 91, and the worm 9 drives the gear 81 to rotate when the worm 9 rotates, and the gear 81 drives the cam 82 to rotate through the rotating shaft 8. During the rotation of the cam 82, the protruding part rotates outward from the fan-shaped groove, so that the cam 82 is clamped into the inside of the groove of the milling machine worktable, and the tooling positioning is completed; The external pressing plate can also be pressed at the position of the pressing plate groove 2 to tighten the tooling; Place the part in the placement groove, and make the part contact with the side of the placement groove away from the tooling pressure strip 5 and the positioning slide block 7; The tooling pressure strip 5 is placed in contact with the part, and the clamping screw 41 is turned. The clamping screw 41 squeezes and positions the tooling pressure strip 5, thereby completing the fixing of the part.

[0021] The present invention can constrain and position parts from three directions, which is convenient for rapid alignment of parts, thereby improving work efficiency; the cam 82 can also be adjusted according to the size of the groove on the workbench, so that the positioning plate 3 can be suitable for grooves of different sizes, which is convenient for the clamping and positioning of the tooling, thereby saving costs, simple operation, and easy use.

[0022] The undisclosed parts in the present invention are all prior art, and their specific structures, materials and working principles are not described in detail. Although the embodiments of the present invention have been shown and described, it is understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the attached claims and their equivalents.

Claims

1. A clamping fixture for a CNC milling machine, comprising a base (1), characterized in that: The upper surface of the base (1) is provided with a placement groove, a positioning piece for positioning the tooling is provided inside the placement groove, a positioning plate (3) is provided at the bottom of the base (1), a plurality of groups of evenly distributed fan-shaped grooves are provided at the bottom of the positioning plate (3), a rotating shaft (8) is rotatably provided inside the fan-shaped groove, a cam (82) is provided on the side of the rotating shaft (8) located inside the fan-shaped groove, a gear (81) is provided on the side of the rotating shaft (8) located inside the positioning plate (3), and a worm (9) meshing with the gear (81) is rotatably provided inside the positioning plate (3).

2. The CNC milling machine clamping fixture according to claim 1, characterized in that: The positioning member comprises a slide groove (6) provided at one end of the placement groove, and a positioning sliding block (7) is slidably arranged inside the slide groove (6).

3. The CNC milling machine clamping fixture according to claim 2 is characterized in that: A lug plate (71) is provided on one side of the positioning slide block (7) close to the edge of the base (1), and a fastening bolt (72) is threadedly connected to the inner part of the threaded hole on the lug plate (71).

4. The CNC milling machine clamping fixture according to claim 1, characterized in that: The positioning member further comprises a tooling pressure strip (5), a screw hole (4) is provided on the side of the base (1), and a clamping screw (41) for compressing the tooling pressure strip (5) is connected to the internal thread of the screw hole (4).

5. The CNC milling machine clamping fixture according to claim 4, characterized in that: A positioning groove (51) is provided on the side of the tooling pressure strip (5) corresponding to the clamping screw (41).

6. The CNC milling machine clamping fixture according to claim 1, characterized in that: The end of the worm (9) exposed outside the positioning plate (3) is provided with a handle (91), and a groove is provided at the bottom of the base (1) corresponding to the handle (91).

7. The CNC milling machine clamping fixture according to claim 1, characterized in that: The protrusions at the front and rear ends of the base (1) are provided with pressure plate grooves (2), one of the protrusions is provided with two pressure plate grooves (2), and the other protrusion is provided with a pressure plate groove (2) in the middle.

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