Workpiece clamping mechanism for milling machine

Abstract

The workpiece clamping mechanism for the milling machine comprises a base and a supporting shell arranged on the base, a plurality of clamping jaws are evenly arranged on the outer cylindrical face of the supporting shell, the middle positions of the clamping jaws are connected with the supporting shell in a rotating mode, and a driving disc is arranged on the portion, located in the supporting shell, of the base. The outer cylindrical surface of the driving disc is provided with protrusions in one-to-one correspondence with the clamping jaws, the bottoms of the clamping jaws are provided with supporting rods penetrating through the supporting shell, the supporting rods penetrate through the supporting shell and then are matched with the outer cylindrical surface of the driving disc, and compression springs are arranged between the upper ends of the clamping jaws and the outer cylindrical surface of the supporting shell. Under the normal condition, under the action of the elastic force of the compression spring, when a workpiece is machined, the upper end of the clamping jaw expands outwards, the workpiece is placed at the upper end of the supporting shell, the driving disc rotates, and when the protrusion makes contact with one end of the inner side of the supporting rod, the lower end of the clamping jaw is driven to swing outwards, and the upper end of the clamping jaw swings inwards to clamp the workpiece. Air cylinder driving clamping is not needed, and the cost is low.

Description

Technical Field

[0001] The utility model relates to the technical field of machining, in particular to a workpiece clamping mechanism for a milling machine. Background Art

[0002] Milling machines mainly refer to machine tools that use milling cutters to process various surfaces of workpieces. Milling machines can process planes (horizontal and vertical surfaces), grooves (keyways, T-slots, dovetail grooves, etc.), toothed parts (gears, spline shafts, sprockets), spiral surfaces (threads, spiral grooves) and various curved surfaces. In addition, they can also be used to process the surface of rotating bodies, internal holes, and cut off.

[0003] During milling machine processing, the workpiece needs to be clamped to prevent it from moving. The existing workpiece clamping method is to fix the workpiece by a cylinder-driven clamp, which is costly and easy to damage. Utility Model Content

[0004] The utility model aims to solve the above problems and provide a workpiece clamping mechanism for a milling machine, which can realize the clamping of the workpiece and has low cost and long service life.

[0005] The technical solution adopted by the utility model to solve its technical problems is:

[0006] A workpiece clamping mechanism for a milling machine comprises a base and a supporting shell arranged on the base, a plurality of clamping jaws are evenly arranged on the outer cylindrical surface of the supporting shell, the middle position of the clamping jaws is rotatably connected to the supporting shell, a driving disk is arranged on the part of the base located inside the supporting shell, protrusions corresponding to the clamping jaws are arranged on the outer cylindrical surface of the driving disk, a supporting rod passing through the supporting shell is arranged at the bottom of the clamping jaw, the supporting rod cooperates with the outer cylindrical surface of the driving disk after passing through the supporting shell, and a compression spring is arranged between the upper end of the clamping jaw and the outer cylindrical surface of the supporting shell.

[0007] Furthermore, a rotating shaft is provided on the base, and the driving disc is sleeved on the rotating shaft and rotates on the rotating shaft.

[0008] Furthermore, a handle is provided at the lower end of the driving disk.

[0009] Furthermore, an opening is provided at the lower end of the support shell, and the handle passes through the opening.

[0010] Furthermore, through holes corresponding one to one with the support rods are provided on the outer cylindrical surface of the support shell.

[0011] Furthermore, the diameter of the through hole is greater than the diameter of the support rod.

[0012] The beneficial effects of the utility model are:

[0013] 1. The utility model includes a base, a support shell arranged on the base, a plurality of clamping jaws are evenly arranged on the outer cylindrical surface of the support shell, the middle position of the clamping jaws is rotatably connected with the support shell, a driving disk is arranged on the part of the base located inside the support shell, a protrusion corresponding to the clamping jaws is arranged on the outer cylindrical surface of the driving disk, a support rod passing through the support shell is arranged at the bottom of the clamping jaw, the support rod cooperates with the outer cylindrical surface of the driving disk after passing through the support shell, and a compression spring is arranged between the upper end of the clamping jaw and the outer cylindrical surface of the support shell. Under normal circumstances, under the action of the elastic force of the compression spring, when processing a workpiece, the upper end of the clamping jaw opens outward, and the workpiece is placed on the upper end of the support shell, and the driving disk rotates. When the protrusion contacts the inner end of the support rod, the lower end of the driving clamping jaw swings outward, and the upper end of the clamping jaw swings inward to clamp the workpiece. No cylinder drive is required for clamping, the cost is low, and the mechanical drive method has a long service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the utility model or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0015] Figure 1 It is a schematic diagram of the structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the internal structure of the utility model;

[0017] Figure 3 It is a top view of the internal structure of the utility model.

[0018] In the figure: base 1, supporting shell 2, clamping claw 3, driving disk 4, protrusion 5, supporting rod 6, compression spring 7, rotating shaft 8, handle 9, opening 10. DETAILED DESCRIPTION

[0019] In order to enable those skilled in the art to better understand the technical solutions in the present invention, 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 them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0020] like Figure 1 and Figure 3As shown, a workpiece clamping mechanism for a milling machine comprises a base 1, a support shell 2 arranged on the base 1, a plurality of clamping jaws 3 are evenly arranged on the outer cylindrical surface of the support shell 2, the middle position of the clamping jaws 3 is rotatably connected with the support shell 2, a driving disk 4 is arranged on the part of the base 1 located inside the support shell 2, a protrusion 5 corresponding to the clamping jaws 3 is arranged on the outer cylindrical surface of the drive disk 4, a support rod 6 passing through the support shell 2 is arranged at the bottom of the clamping jaw 3, the support rod 6 is matched with the outer cylindrical surface of the drive disk 4 after passing through the support shell 2, and a compression spring 7 is arranged between the upper end of the clamping jaw 3 and the outer cylindrical surface of the support shell 2. Under normal circumstances, under the action of the elastic force of the compression spring 7, when processing a workpiece, the upper end of the clamping jaw 3 opens outwards, the workpiece is placed on the upper end of the support shell 2, the drive disk 4 rotates, and when the protrusion 5 contacts the inner end of the support rod 6, the lower end of the driving clamping jaw 3 swings outwards, and the upper end of the clamping jaw 3 swings inwards to clamp the workpiece. No cylinder drive clamping is required, the cost is low, the mechanical drive method has a long service life.

[0021] like Figure 2 As shown, a rotating shaft 8 is provided on the base 1, and the driving disc 4 is sleeved on the rotating shaft 8 and rotates on the rotating shaft 8, and the driving disc 4 is rotatably connected to the rotating shaft 8 through a bearing.

[0022] like Figure 2 As shown, a handle 9 is provided at the lower end of the driving disk 4, and the driving disk 4 can be easily rotated by the handle.

[0023] like Figure 1 As shown, an opening 10 is provided at the lower end of the support shell 2 , and the handle 9 passes through the opening 10 .

[0024] like Figure 1 As shown, the outer cylindrical surface of the support shell 2 is provided with through holes corresponding to the support rods 6. The diameter of the through holes is larger than the diameter of the support rods 6, and the support rods 6 are movable in the through holes without being locked.

[0025] In the description of the present invention, it should be noted that the terms "left", "right", "up", "down", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0026] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it 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, it can be an indirect connection through an intermediate medium, and it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

Claims

1. A workpiece clamping mechanism for a milling machine, characterized in that: The invention comprises a base (1), a support shell (2) arranged on the base (1), a plurality of clamping jaws (3) being evenly arranged on the outer cylindrical surface of the support shell (2), the middle position of the clamping jaws (3) being rotatably connected to the support shell (2), a driving disk (4) being arranged on the part of the base (1) located inside the support shell (2), a protrusion (5) corresponding to the clamping jaws (3) being arranged on the outer cylindrical surface of the driving disk (4), a supporting rod (6) passing through the support shell (2) being arranged at the bottom of the clamping jaw (3), the supporting rod (6) being matched with the outer cylindrical surface of the driving disk (4) after passing through the support shell (2), and a compression spring (7) being arranged between the upper end of the clamping jaw (3) and the outer cylindrical surface of the support shell (2).

2. A workpiece clamping mechanism for a milling machine as claimed in claim 1, characterized in that: The base (1) is provided with a rotating shaft (8), and the driving disc (4) is sleeved on the rotating shaft (8) and rotates on the rotating shaft (8).

3. A workpiece clamping mechanism for a milling machine as claimed in claim 2, characterized in that: A handle (9) is provided at the lower end of the driving disc (4).

4. A workpiece clamping mechanism for a milling machine as claimed in claim 3, characterized in that: The lower end of the support shell (2) is provided with an opening (10), and the handle (9) passes through the opening (10).

5. A workpiece clamping mechanism for a milling machine as claimed in claim 1, characterized in that: The outer cylindrical surface of the support shell (2) is provided with through holes corresponding one to one with the support rods (6).

6. A workpiece clamping mechanism for a milling machine as claimed in claim 5, characterized in that: The diameter of the through hole is greater than the diameter of the support rod (6).

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