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 dismounting device is rapid in adjustment, reliable in dismounting and suitable for being used during tool dismounting of the whole series of ER chucks.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of ER chuck unloading tool aids, belong to mechanical technical field. BACKGROUND

[0002] ER chuck is widely used in the clamping of numerical control cutter because of reliable clamping and convenient operation, and ER chuck is often used to clamp cutter in production and processing process. Cutter is originally designed very ingenious, eccentric groove in nut is hooked in annular groove of ER chuck, and cutter is clamped by relying on the axial compression of two groups of inner cone on nut and shank to ER chuck;When disassembling cutter, unscrew nut axial force drives ER chuck axial force to be unloaded, and cutter is disassembled. But in the process of frequent cutter assembly and disassembly, nut eccentric groove and ER chuck annular groove are seriously worn, and nut is often disassembled, and ER chuck and cutter are still clamped in shank. Only the method of using iron hammer to knock ER chuck is used to disassemble ER chuck and cutter. This method is low in operating efficiency, and the precision of machine tool spindle is easily damaged and the operator is hurt in disassembly process. SUMMARY

[0003] In order to overcome the deficiencies of the prior art, the utility model provides a kind of ER chuck unloading tool aid, the auxiliary simple structure, adjustment is rapid, disassembly is reliable, and it is suitable for the use when the whole series ER chuck is unloaded.

[0004] The technical scheme that the utility model solves its technical problem is as follows: a kind of ER chuck unloading tool aid, including special nut, right blocking pad, left blocking pad, positioning sleeve, screw and blocking sleeve, the special nut is connected in the outer thread of shank by thread, one side of special nut is equipped with two axial counterbore threaded holes, and the front end face of special nut is provided with the right blocking pad and the left blocking pad of semicircular ring shape;The inside of the arc of right blocking pad and left blocking pad is all with a semicircular recess, and the recess of right blocking pad is protruded from right blocking pad at one end, and the recess of left blocking pad is protruded from left blocking pad at one end, and the recess of right blocking pad and left blocking pad is all equipped with a through hole at the end of protrusion;The semicircular recess of right blocking pad and left blocking pad is respectively inserted into the annular groove of ER chuck;The recess protruded from right blocking pad at one end and the recess protruded from left blocking pad at one end are adjacent in position, and right blocking pad and left blocking pad are combined into a circular ring with an opening;The stud of two screws is respectively inserted into two positioning sleeves, and two positioning sleeves are respectively located in two through holes, and the stud of two screws is connected with two counterbore threaded holes in special nut by thread.

[0005] Further, the height of positioning sleeve is higher than the height of right blocking pad and left blocking pad.

[0006] The utility model discloses a beneficial effect is: the utility model discloses be applicable to the dismounting work of ER chuck inner cutter, simple structure, lower production cost, and the special nut, left, right fender pad, positioning sleeve, screw and fender sleeve can be made, convenient operation, safe and reliable, effectively reduce the wear and tear of ER chuck annular groove, will not cause damage to machine tool spindle precision, can be widely applied to the dismounting of ER chuck inner cutter, and the market prospect is wide. BRIEF DESCRIPTION OF DRAWINGS

[0007] The utility model is further explained below in combination with the drawings and specific embodiment.

[0008] Figure 1 It is the structural schematic diagram of the utility model.

[0009] Figure 2 It is the three-dimensional schematic diagram of the utility model.

[0010] Figure 3 It is the schematic diagram of the right fender pad of the utility model.

[0011] Figure 4 It is the schematic diagram of the utility model after fender sleeve and left fender pad are dismounted.

[0012] Figure 5 It is the schematic diagram of the utility model after another side left fender pad, screw, positioning sleeve and fender sleeve are dismounted.

[0013] Figure 6 It is the schematic diagram of the special nut of the utility model.

[0014] Figure 7 It is the schematic diagram of the positioning sleeve of the utility model.

[0015] Mark in the drawing:

[0016] 1, special nut, 2, right fender pad, 3, left fender pad, 4, positioning sleeve, 5, screw, 6, fender sleeve, 7, handle, 8, ER chuck, 9, cutter, 10, through hole, 11, concave edge, 12, annular groove, 13, countersunk screw hole. PREFERRED EMBODIMENT

[0017] For example, Figure 1As shown in Fig. 7, an ER chuck tool unloading auxiliary tool includes a special nut 1, a right blocking pad 2, a left blocking pad 3, a positioning sleeve 4, a screw 5 and a blocking sleeve 6. The special nut 1 is threadedly connected to the outer thread of a tool shank 7. Two axial counter sunk threaded holes 13 are arranged in one side of the special nut 1. A semicircular right blocking pad 2 and a semicircular left blocking pad 3 are arranged on the front end face of the special nut 1. The semicircular right blocking pad 2 and the semicircular left blocking pad 3 are respectively provided with a semicircular recess 11. One end of the recess 11 of the right blocking pad 2 protrudes from the right blocking pad 2, and one end of the recess 11 of the left blocking pad 3 protrudes from the left blocking pad 3. A through hole 10 is arranged on the protruding end of the recess 11 of the right blocking pad 2 and the protruding end of the recess 11 of the left blocking pad 3. The semicircular recess 11 of the right blocking pad 2 and the semicircular recess 11 of the left blocking pad 3 are respectively inserted into the annular groove 12 of the ER chuck 8. The protruding end of the recess 11 of the right blocking pad 2 and the protruding end of the recess 11 of the left blocking pad 3 are adjacent to each other. The right blocking pad 2 and the left blocking pad 3 are combined into a circular ring with an opening. The threaded shanks of the two screws 5 are respectively inserted through the two positioning sleeves 4, and the two positioning sleeves 4 are respectively arranged in the two through holes 10. The height of the positioning sleeve 4 is higher than the height of the right blocking pad 2 and the left blocking pad 3. The threaded shanks of the two screws 5 are threadedly connected to the two counter sunk threaded holes 13 of the special nut 1.

[0018] In use, the screw cap at the front end of the tool 9 is removed, and the special nut 1 is screwed onto the outer thread of the tool shank 7 at the appropriate position. The left blocking pad 3 and the right blocking pad 2 can rotate around the respective positioning sleeves 4. The left blocking pad 3 and the right blocking pad 2 at the front end of the special nut 1 are respectively pushed around the left and right positioning sleeves 4, so that the semicircular recesses on the two blocking pads are buckled in the annular groove 12 of the ER chuck 8. The blocking sleeve 6 on the outer side of the special nut 1 is pushed along the axial direction of the special nut 1 to wrap the outer diameter of the left blocking pad 3 and the right blocking pad 2, so as to limit the rotation of the two blocking pads around the opening and closing of the ER chuck 8. At this time, the special nut 1 is unscrewed. Under the action of the axial force, the two blocking pads drive the ER chuck 8 to move axially, so as to realize the dismounting of the ER chuck 8 and the tool 9 in the chuck.

Claims

1. An ER chuck tool unloading tool, characterized in that: The device includes a special nut (1), a right retaining washer (2), a left retaining washer (3), a positioning sleeve (4), a screw (5), and a retaining sleeve (6). The special nut (1) is threaded to the external thread of the tool holder (7). Two axial countersunk threaded holes (13) are provided on one side of the special nut (1). The front end face of the special nut (1) is provided with a semi-circular right retaining washer (2) and a left retaining washer (3). The inner side of the arc of the right retaining washer (2) and the left retaining washer (3) are both provided with a semi-circular concave edge (11). One end of the concave edge (11) of the right retaining washer (2) protrudes out of the right retaining washer (2), and one end of the concave edge (11) of the left retaining washer (3) protrudes out of the left retaining washer (3). Each of the two concave edges has a through hole (10) on its protruding end; the semi-circular 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 of the right stop pad (2) and the protruding end of the concave edge (11) of the left stop pad (3) are adjacent to each other, and the right stop pad (2) and the left stop pad (3) are combined to form a ring with a notch; the studs of the two screws (5) are respectively inserted through the two positioning sleeves (4), 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 to the two countersunk threaded holes (13) in the special nut (1).

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

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