ER chuck cutter dismounting auxiliary tool

Abstract

A special nut is connected to an external thread of a cutter handle, two countersunk threaded holes are formed in one side of the special nut, and a semicircular right blocking pad and a semicircular left blocking pad are arranged on the front end face of the special nut; the inner sides of the arcs of the right blocking pad and the left blocking pad are each provided with a semicircular concave edge, one end of the concave edge of the right blocking pad protrudes out of the right blocking pad, one end of the concave edge of the left blocking pad protrudes out of the left blocking pad, and the protruding ends of the two concave edges are each provided with a through hole. The semicircular concave edges of the right blocking pad and the left blocking pad are inserted into the annular grooves of the ER chuck in a matched mode respectively. The protruding end of the concave edge of the right blocking pad is adjacent to the protruding end of the concave edge of the left blocking pad, and the right blocking pad and the left blocking pad are combined to form a circular ring with a notch. Studs of the two screws penetrate through the two positioning sleeves in a matched mode respectively, the two positioning sleeves are located in the two through holes in a matched mode respectively, and the studs of the two screws are connected with the two countersunk threaded holes in the special nut. The tool is rapid in adjustment, reliable in disassembly and suitable for being used during tool disassembly of the whole series of ER chucks.

Description

Technical Field

[0001] The invention relates to an ER chuck tool removing auxiliary tool, belonging to the technical field of machinery. Background Art

[0002] ER chucks are widely used in the clamping of CNC tools due to their reliable clamping and convenient operation. ER chucks are often used to clamp tools in the production process. The tool was originally designed very delicately. The eccentric groove hook in the nut is hung in the annular groove of the ER chuck. The nut and the two sets of inner cones on the tool handle axially press the ER chuck to clamp the tool. When disassembling the tool, the axial force of the nut is loosened to drive the axial unloading of the ER chuck to disassemble the tool. However, during the frequent installation and disassembly of the tool, the eccentric groove of the nut and the annular groove of the ER chuck are severely worn. It is often the case that the nut is removed, but the ER chuck and the tool are still clamped in the tool handle. The only way to disassemble the ER chuck and the tool is to use an iron chisel to hammer the ER chuck. This method has low operating efficiency and is likely to cause damage to the spindle precision of the machine tool and harm the operator during the disassembly process. Summary of the invention

[0003] In order to overcome the deficiencies of the prior art, the present invention provides an ER chuck tool removal auxiliary tool, which has a simple structure, quick adjustment, reliable disassembly, and is suitable for use in tool removal of a full range of ER chucks.

[0004] The technical solution adopted by the present invention to solve its technical problem is: an ER chuck tool removal auxiliary tool, including a special nut, a right stop pad, a left stop pad, a positioning sleeve, a screw and a stop sleeve, the special nut is threadedly connected to the external thread of the tool handle, two axial countersunk threaded holes are arranged in one side of the special nut, and the front end surface of the special nut is provided with a semicircular right stop pad and a left stop pad; the inner side of the arc of the right stop pad and the left stop pad are both provided with a semicircular concave edge, one end of the concave edge on the right stop pad protrudes from the right stop pad, and the left stop pad is provided with a semicircular concave edge on the left stop pad. One end of the upper concave edge protrudes from the left stop pad, and a through hole is provided on the protruding end of the two concave edges; the semicircular concave edges of the right stop pad and the left stop pad are respectively inserted into the annular groove of the ER chuck; the protruding end of the upper concave edge of the right stop pad and the protruding end of the upper concave edge of the left stop pad are adjacent to each other, and the right stop pad and the left stop pad are combined into a circular ring with a notch; the studs of the two screws are respectively cooperated to pass through the two positioning sleeves, and the two positioning sleeves are respectively cooperated to be located in the two through holes, and the studs of the two screws are threadedly connected with the two countersunk threaded holes in the special nut.

[0005] Furthermore, the height of the positioning sleeve is higher than the heights of the right stop pad and the left stop pad.

[0006] The beneficial effects of the present invention are as follows: the present invention is suitable for the disassembly of the tool in the ER chuck, has a simple structure and a low manufacturing cost, and only requires the manufacture of a special nut, a left and a right stopper, a positioning sleeve, a screw and a stopper sleeve; the operation process is convenient, safe and reliable, and the wear on the annular groove of the ER chuck is effectively reduced without causing damage to the precision of the machine tool spindle; the present invention can be widely used in the disassembly of the tool in the ER chuck, and has a broad market prospect. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments.

[0008] Figure 1 It is a structural schematic diagram of the present invention.

[0009] Figure 2 It is a three-dimensional schematic diagram of the present invention.

[0010] Figure 3 It is a schematic diagram of the right stop pad of the present invention.

[0011] Figure 4 It is a schematic diagram of the present invention after the stop sleeve and the left stop pad are disassembled.

[0012] Figure 5 It is a schematic diagram of the present invention in which the left stopper, screws, positioning sleeve and stopper sleeve on the other side are disassembled.

[0013] Figure 6 It is a schematic diagram of the special nut of the present invention.

[0014] Figure 7 It is a schematic diagram of a positioning sleeve of the present invention.

[0015] Numbers in the figure: 1. Special nut, 2. Right stopper, 3. Left stopper, 4. Positioning sleeve, 5. Screw, 6. Stopper sleeve, 7. Tool handle, 8. ER chuck, 9. Tool, 10. Through hole, 11. Concave edge, 12. Annular groove, 13. Countersunk threaded hole. DETAILED DESCRIPTION

[0016] like Figure 1As shown in FIG. 7 , an ER chuck tool removal auxiliary tool comprises a special nut 1, a right stop washer 2, a left stop washer 3, a positioning sleeve 4, a screw 5 and a stop sleeve 6. The special nut 1 is threadedly connected to the external thread of the tool handle 7. Two axial countersunk threaded holes 13 are provided on one side of the special nut 1. The front end surface of the special nut 1 is provided with a semicircular right stop washer 2 and a left stop washer 3. The right stop washer 2 and the left stop washer 3 have a semicircular concave edge 11 on the inner side of the arc. One end of the concave edge 11 on the right stop washer 2 protrudes from the right stop washer 2, and one end of the concave edge 11 on the left stop washer 3 protrudes from the left stop washer 3. The two concave edges protrude from the right stop washer 2 and the left stop washer 3. A through hole 10 is provided on this end; the semicircular concave edges 11 of the right stop pad 2 and the left stop pad 3 are respectively inserted into the annular groove 12 of the ER chuck 8; the protruding end of the concave edge 11 on the right stop pad 2 and the protruding end of the concave edge 11 on the left stop pad 3 are adjacent to each other, and the right stop pad 2 and the left stop pad 3 are combined into a circular ring with a notch; the studs of the two screws 5 are respectively passed through the two positioning sleeves 4, and the two positioning sleeves 4 are respectively positioned in the two through holes 10, and the height of the positioning sleeves 4 is higher than the height of the right stop pad 2 and the left stop pad 3, and the studs of the two screws 5 are threadedly connected with the two countersunk threaded holes 13 in the special nut 1.

[0017] During use, remove the nut at the front end of the tool 9, replace the special nut 1 and screw it into the appropriate position on the external thread of the tool handle 7, the left stopper 3 and the right stopper 2 can rotate around their respective positioning sleeves 4, and move the left stopper 3 and the right stopper 2 at the front end of the special nut 1 around the left and right positioning sleeves 4 respectively, so that the semicircular concave edges on the two stoppers are retracted into the annular groove 12 of the ER chuck 8; push the stopper sleeve 6 on the outside of the special nut 1 along the axial direction of the special nut 1 to wrap around the outer diameters of the left stopper 3 and the right stopper 2, and limit the opening and closing rotation of the two stoppers around the ER chuck 8. At this time, unscrew the special nut 1, and under the action of the axial force, the two stoppers drive the ER chuck 8 to move axially, so as to realize the disassembly of the ER chuck 8 and the tool 9 in the chuck, which is convenient and practical.

Claims

1. An ER chuck tool removal tool, characterized in that: The invention comprises a special nut (1), a right stopper (2), a left stopper (3), a positioning sleeve (4), a screw (5) and a stopper sleeve (6); the special nut (1) is threadedly connected to the external thread of the tool handle (7); two axial countersunk threaded holes (13) are arranged in one side of the special nut (1); a semicircular right stopper (2) and a left stopper (3) are arranged on the front end surface of the special nut (1); the right stopper (2) and the left stopper (3) are both provided with a semicircular concave edge (11) on the inner side of the circular arc; one end of the concave edge (11) on the right stopper (2) protrudes from the right stopper (2); and one end of the concave edge (11) on the left stopper (3) protrudes from the left stopper (3). , a through hole (10) is provided on the protruding end of the two concave edges; the semicircular concave edges (11) of the right stopper (2) and the left stopper (3) are respectively inserted into the annular groove (12) of the ER chuck (8); the protruding end of the concave edge 11 of the right stopper (2) and the protruding end of the concave edge (11) of the left stopper (3) are adjacent to each other, and the right stopper (2) and the left stopper (3) are combined into a circular ring with a notch; the studs of the two screws (5) are respectively passed through the two positioning sleeves (4), and the two positioning sleeves (4) are respectively located in the two through holes (10), and the studs of the two screws (5) are threadedly connected with the two countersunk threaded holes (13) in the special nut (1).

2. The ER chuck removal tool according to claim 1, characterized in that: The height of the positioning sleeve (4) is higher than the heights of the right stop pad (2) and the left stop pad (3).

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