Precision-adjustable hydraulic jacket for ER cutter handle

Abstract

The utility model relates to the field of ER cutter handles, in particular to a precision-adjustable hydraulic jacket for an ER cutter handle, which comprises an ER cutter handle body, a main body and a mounting groove, the main body is butted with a cutter, and the mounting groove is arranged on one side of the ER cutter handle body and is used for inserting the cutter into the ER cutter handle body. The hydraulic jacket for the ER knife handle is provided with the internal thread nut sleeve, the hydraulic power knife sleeve, the adjusting bolt, the stress screw hole, the stress bolt, the fastening gasket and the stress block, and when the hydraulic jacket for the ER knife handle is used, the internal thread nut sleeve can be twisted to be close to the hydraulic power knife sleeve to reduce the distance between the internal thread nut sleeve and the hydraulic power knife sleeve; the butt-joint screw hole of the internal thread nut sleeve is matched with the mounting screw hole of the hydraulic power tool sleeve, so that the hydraulic power tool sleeve is connected through the adjusting bolts, and after the hydraulic power tool sleeve is inserted into a machining tool, the internal thread nut sleeve can move towards the hydraulic power tool sleeve by twisting the four sets of adjusting bolts on the premise of the initial run-out value; the distance is reduced, the center torsion is improved, and therefore the jerk value is reduced.

Description

Technical Field

[0001] The utility model relates to the field of ER tool handles, in particular to a hydraulic clamping sleeve for an ER tool handle with adjustable precision. Background Art

[0002] ER toolholder is a type of CNC toolholder with a wide range of applications and multiple models. ER toolholder is a machine tool accessory used to connect tools on the spindle of drilling, tapping, milling machines or machining centers. It is also called ER toolholder or ER elastic toolholder. There are multiple models of ER toolholders, such as BT30, BT40, BT50, etc. Each model contains multiple specific specifications. ER toolholders require hydraulic jackets during the assembly of tools. Hydraulic jackets, as a mechanical accessory, are usually combined with hydraulic systems to achieve automatic positioning, support and clamping of tools through hydraulic control.

[0003] During the process of installing the cutting tool on the existing ER tool holder, due to the different types of cutting tools, if the cutting tool is directly connected and tightened with the ER tool holder without adjustment, the center accuracy of the cutting tool installed on the ER tool holder will be insufficient and the accuracy cannot be adjusted. In this way, when encountering some workpieces with high precision requirements, the processing requirements cannot be met, which will not only cause defective workpieces, but also cause certain losses to the cutting tool connected with the ER tool holder.

[0004] Therefore, it is necessary to invent a precision-adjustable hydraulic chuck for ER toolholders to solve the above problems. Utility Model Content

[0005] The utility model aims to provide a hydraulic collet for an ER toolholder with adjustable precision. Through an internal threaded nut sleeve, a hydraulic power tool sleeve, an adjusting bolt, a stress screw hole, a stress bolt, a fastening gasket and a stress block, the hydraulic power tool sleeve has two adjustment methods, thereby achieving the purpose of adjusting the tool precision of the hydraulic collet for the ER toolholder. In this way, in the processing of workpieces with some high-precision requirements, different processing requirements can be met, the probability of defective workpieces can be reduced, and the loss caused by the tool docked with the ER toolholder can be reduced, so as to solve the problem in the prior art that, due to the different types of tools, the ER toolholder is directly docked and tightened with the ER toolholder without adjustment, which will result in the center precision of the tool installed in the ER toolholder being insufficient and the precision cannot be adjusted. In this way, in the processing of workpieces with some high-precision requirements, the processing requirements cannot be met, which will not only cause defective workpieces, but also cause certain losses to the tool docked with the ER toolholder.

[0006] In order to achieve the above-mentioned object, the utility model provides the following technical solutions: a hydraulic collet for an ER toolholder with adjustable precision, comprising an ER toolholder body, a main body for docking and mounting with a tool;

[0007] A mounting groove is provided on one side of the ER tool handle body, and is used for inserting the tool into the ER tool handle body. A threaded mounting tube is fixedly installed on one side of the mounting groove, an inner conventional tool sleeve is provided inside the threaded mounting tube, an inner threaded nut sleeve is movably connected to the outside of the threaded mounting tube, and a docking screw hole is provided on the outside of the threaded mounting tube;

[0008] The hydraulic power tool sleeve is arranged on the other side of the internal threaded nut sleeve and is used for docking and installing the tool. A mounting screw hole is opened on one side of the hydraulic power tool sleeve, and an adjusting bolt is movably connected inside the mounting screw hole. A stress screw hole is opened outside the hydraulic power tool sleeve, and a stress bolt is arranged inside the stress screw hole. A fastening gasket is arranged at the bottom of the stress bolt, and a stress block is arranged at the bottom of the fastening gasket. A processing tool is movably connected inside the hydraulic power tool sleeve.

[0009] Preferably, the internally threaded nut sleeve is movably connected to the threaded mounting tube, and the center line of the internally threaded nut sleeve coincides with the center line of the threaded mounting tube.

[0010] Preferably, a resistance screw sleeve is provided on one side of the internal threaded nut sleeve, an embedded groove is provided on the outside of the resistance screw sleeve, a telescopic support sleeve is provided inside the embedded groove, and a fastening bolt penetrates the outside of the telescopic support sleeve.

[0011] Preferably, the telescopic support sleeve is movably connected to the abutment screw sleeve, and the fastening bolts are distributed at equal intervals on the telescopic support sleeve.

[0012] Preferably, the number of the mounting screw holes is set to four, and the four mounting screw holes are distributed in a circular array on the hydraulic power tool sleeve.

[0013] Preferably, the stress bolt is threadedly connected to the hydraulic power tool sleeve, and the center line of the machining tool coincides with the center line of the hydraulic power tool sleeve.

[0014] In the above technical solution, the technical effects and advantages provided by the utility model are:

[0015] The utility model is provided with an internal thread nut sleeve, a hydraulic power tool sleeve, an adjusting bolt, a stress screw hole, a stress bolt, a fastening gasket and a stress block. When the hydraulic clamping sleeve for the ER tool holder is used, the internal thread nut sleeve can be twisted to be close to the hydraulic power tool sleeve to reduce the distance between the two, so that the docking screw hole of the internal thread nut sleeve matches the mounting screw hole of the hydraulic power tool sleeve, so as to connect them by adjusting the bolts. In this way, after the hydraulic power tool sleeve is inserted into the processing tool, under the premise of the initial run-out amount, the internal thread nut sleeve can be moved toward the hydraulic power tool sleeve by twisting four sets of adjusting bolts, so as to reduce the distance and increase the center torque, thereby reducing the run-out amount. A stress screw hole and a stress bolt are also provided above the internal threaded nut sleeve. By continuously twisting the stress bolt, the stress bolt cooperates with the tightening gasket to press down the stress block, so that the stress block generates stress on the position of the hydraulic power tool sleeve close to the processing tool, thereby strengthening the clamping force of the processing tool and adjusting the runout. In this way, the hydraulic power tool sleeve has two adjustment methods, and the purpose of adjusting the tool precision for the hydraulic clamping sleeve of the ER tool holder is achieved. In this way, when encountering some workpieces with high precision requirements, different processing requirements can be met, the probability of defective workpieces is reduced, and the loss caused by the tool docked with the ER tool holder is reduced;

[0016] The utility model is provided with an installation groove, a threaded installation tube, an internally threaded nut sleeve, a resistance screw sleeve, an embedded groove and a telescopic support sleeve. In order to avoid the vibration generated when the tool and the workpiece contact, the internally threaded nut sleeve is offset on the threaded installation tube, thereby affecting the accuracy of the hydraulic power tool sleeve. Before installing the internally threaded nut sleeve, a resistance screw sleeve and a telescopic support sleeve of appropriate length can be sleeved on the threaded installation tube. In this way, after the accuracy adjustment of the internally threaded nut sleeve and the hydraulic power tool sleeve is completed, the resistance screw sleeve can also be twisted to make the resistance screw sleeve fit on the other side of the internally threaded nut sleeve. The telescopic support sleeve connected to the resistance screw sleeve through the embedded groove strengthens the contact area of ​​the resistance screw sleeve on the threaded installation tube. In this way, when the vibration generated when the tool and the workpiece contact is transmitted to the internally threaded nut sleeve, it is dispersed and transmitted by the resistance screw sleeve and the telescopic support sleeve, thereby ensuring the position of the internally threaded nut sleeve on the threaded installation tube, reducing the probability of fluctuation of the vibration amount caused by the hydraulic power tool sleeve to the hydraulic power tool sleeve, and ensuring the accuracy of the processing tool during installation and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the conventional inner knife seat structure of the utility model;

[0020] Figure 3 This is a schematic diagram of the telescopic support sleeve structure of the utility model;

[0021] Figure 4 This is a schematic diagram of the structure of the hydraulic power tool sleeve of the utility model;

[0022] Figure 5 This is a schematic diagram of the machining tool structure of the utility model.

[0023] Description of reference numerals:

[0024] 1. ER tool holder body; 2. Mounting groove; 3. Threaded mounting tube; 4. Inner conventional tool sleeve; 5. Inner threaded nut sleeve; 6. Resistance screw sleeve; 7. Embedded groove; 8. Telescopic support sleeve; 9. Fastening bolt; 10. Docking screw hole; 11. Hydraulic power tool sleeve; 12. Mounting screw hole; 13. Adjusting bolt; 14. Stress screw hole; 15. Stress bolt; 16. Fastening gasket; 17. Stress block; 18. Processing tool. DETAILED DESCRIPTION

[0025] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0026] The utility model provides Figure 1-5 A hydraulic chuck for an ER toolholder with adjustable precision is shown, comprising an ER toolholder body 1, a main body for docking and mounting with a tool;

[0027] The mounting groove 2 is arranged on one side of the ER tool handle body 1, and is used for inserting the tool into the ER tool handle body 1. A threaded mounting tube 3 is fixedly installed on one side of the mounting groove 2, and an inner conventional tool sleeve 4 is arranged inside the threaded mounting tube 3. An inner threaded nut sleeve 5 is movably connected to the outside of the threaded mounting tube 3, and a docking screw hole 10 is opened on the outside of the threaded mounting tube 3;

[0028] The hydraulic power tool sleeve 11 is arranged on the other side of the internal threaded nut sleeve 5 for docking and installing the tool, and a mounting screw hole 12 is provided on one side of the hydraulic power tool sleeve 11, and an adjusting bolt 13 is movably connected inside the mounting screw hole 12. A stress screw hole 14 is provided outside the hydraulic power tool sleeve 11, and a stress bolt 15 is arranged inside the stress screw hole 14. A fastening gasket 16 is arranged at the bottom of the stress bolt 15, and a stress block 17 is arranged at the bottom of the fastening gasket 16. A processing tool 18 is movably connected inside the hydraulic power tool sleeve 11, and the internal threaded nut sleeve 5 can be twisted to be close to the hydraulic power tool sleeve 11 to reduce the distance between the two, so that the docking screw hole 10 of the internal threaded nut sleeve 5 matches the mounting screw hole 12 of the hydraulic power tool sleeve 11, so as to be connected by the adjusting bolt 13. In this way, after the hydraulic power tool sleeve 11 is inserted into the processing tool 18, under the premise of the initial run-out, the internal threaded nut sleeve 5 can be moved toward the hydraulic power tool sleeve 11 by twisting four sets of adjusting bolts 13, thereby reducing the distance and increasing the central torque, thereby reducing the run-out.

[0029] like Figure 1 , Figure 2 and Figure 3 As shown, the internal threaded nut sleeve 5 is movably connected with the threaded mounting tube 3, and the center line of the internal threaded nut sleeve 5 coincides with the center line of the threaded mounting tube 3. The internal threaded nut sleeve 5 has a simple structure and is easy to operate, and it is convenient and quick to dock and install the processing tool 18 with the ER tool handle. A resistance screw sleeve 6 is provided on one side of the internal threaded nut sleeve 5, and an embedded groove 7 is provided on the outside of the resistance screw sleeve 6. A telescopic support sleeve 8 is provided inside the embedded groove 7, and a fastening bolt 9 penetrates the outside of the telescopic support sleeve 8. After the internal threaded nut sleeve 5 and the hydraulic power tool sleeve 11 are close to each other and the precision adjustment is completed, the resistance screw sleeve can also be twisted. 6, let the abutment screw sleeve 6 fit on the other side of the internal threaded nut sleeve 5, and the telescopic support sleeve 8 connected to the abutment screw sleeve 6 through the embedded groove 7 strengthens the contact area of ​​the abutment screw sleeve 6 on the threaded mounting tube 3, the telescopic support sleeve 8 is movably connected to the abutment screw sleeve 6, and the fastening bolts 9 are evenly distributed on the telescopic support sleeve 8. When the vibration generated when the tool and the workpiece contact is transmitted to the internal threaded nut sleeve 5, it is dispersedly transmitted by the abutment screw sleeve 6 and the telescopic support sleeve 8, thereby ensuring the position of the internal threaded nut sleeve 5 on the threaded mounting tube 3 and reducing the probability of fluctuation of the vibration amount caused by the hydraulic power tool sleeve 11.

[0030] like Figure 1 , Figure 4 and Figure 5As shown, the number of mounting screw holes 12 is set to four, and the four mounting screw holes 12 are distributed in a circular array on the hydraulic power tool sleeve 11, so that the docking screw hole 10 of the internal threaded nut sleeve 5 matches the mounting screw hole 12 of the hydraulic power tool sleeve 11, so as to be connected by adjusting the bolt 13, which is also convenient for adjusting the accuracy of the processing tool 18. The stress bolt 15 is threadedly connected to the hydraulic power tool sleeve 11, and the center line of the processing tool 18 coincides with the center line of the hydraulic power tool sleeve 11. By continuously twisting the stress bolt 15, the stress bolt 15 cooperates with the fastening gasket 16 to press down the stress block 17, so that the stress block 17 generates stress on the position inside the hydraulic power tool sleeve 11 close to the processing tool 18, thereby strengthening the clamping force of the processing tool 18 to adjust the runout amount.

[0031] The working principle of the utility model is as follows: before installing the processing tool 18, the inner conventional tool sleeve 4 on the ER tool handle is first removed, and then the interference screw sleeve 6 and the telescopic support sleeve 8 of suitable length are first installed on the threaded installation tube 3, so that after the precision adjustment of the inner thread nut sleeve 5 and the hydraulic power tool sleeve 11 is completed, the interference screw sleeve 6 can also be twisted to make the interference screw sleeve 6 fit on the other side of the inner thread nut sleeve 5, and the telescopic support sleeve 8 connected with the interference screw sleeve 6 through the embedded groove 7 strengthens the contact area of ​​the interference screw sleeve 6 on the threaded installation tube 3, and then the inner thread nut sleeve 5 and the hydraulic power tool sleeve 11 are installed on the threaded installation tube 3. The hydraulic power tool sleeve 11 is pressed, and the processing tool 18 is inserted into the interior of the hydraulic power tool sleeve 11. Then, the internal threaded nut sleeve 5 is twisted close to the hydraulic power tool sleeve 11 to reduce the distance between the two, so that the docking screw hole 10 of the internal threaded nut sleeve 5 matches the mounting screw hole 12 of the hydraulic power tool sleeve 11, and then connected by adjusting the bolt 13. In this way, after the hydraulic power tool sleeve 11 is inserted into the processing tool 18, under the premise of the initial run-out amount, the internal threaded nut sleeve 5 can be moved toward the hydraulic power tool sleeve 11 by twisting the four sets of adjusting bolts 13, thereby reducing the distance and increasing the center torque, thereby reducing the run-out amount, and then the internal threaded nut sleeve 5 is adjusted. A stress screw hole 14 and a stress bolt 15 are also provided above the threaded nut sleeve 5. By continuously twisting the stress bolt 15, the stress bolt 15 cooperates with the fastening gasket 16 to press down the stress block 17, so that the stress block 17 generates stress on the position of the hydraulic power tool sleeve 11 near the processing tool 18, thereby strengthening the clamping force of the processing tool 18 and adjusting the runout amount. In this way, the hydraulic power tool sleeve 11 has two adjustment methods, realizing the purpose of adjusting the tool precision of the hydraulic clamping sleeve for the ER tool holder. At this time, the hydraulic clamping sleeve for the ER tool holder has been fully installed and adjusted, and the processing tool 1 can be used normally. 8. The workpiece is processed. When the vibration generated when the tool and the workpiece are in contact during the processing is transmitted to the internal threaded nut sleeve 5, it is dispersed and transmitted by the abutting screw sleeve 6 and the telescopic support sleeve 8 to ensure the position of the internal threaded nut sleeve 5 on the threaded mounting tube 3, reduce the probability of vibration fluctuations in the hydraulic power tool sleeve 11, and ensure the accuracy of the processing tool 18 during installation and use. Finally, after completing the installation and use of all the hydraulic jackets for ER tool holders according to the above operations, the device can be maintained daily. In this way, the use process of the hydraulic jacket for ER tool holders with adjustable precision is completed.

[0032] The above only describes some exemplary embodiments of the present invention by way of illustration. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A precision-adjustable hydraulic collet for an ER toolholder, characterized in that: include ER tool handle body (1), used for connecting and mounting with the tool; A mounting groove (2) is arranged on one side of the ER tool handle body (1) and is used for inserting a tool into the ER tool handle body (1); a threaded mounting tube (3) is fixedly mounted on one side of the mounting groove (2); an inner conventional tool sleeve (4) is arranged inside the threaded mounting tube (3); an inner threaded nut sleeve (5) is movably connected to the outside of the threaded mounting tube (3); and a docking screw hole (10) is provided on the outside of the threaded mounting tube (3); A hydraulic power tool sleeve (11) is arranged on the other side of the internal thread nut sleeve (5) and is used for docking and installing a tool. A mounting screw hole (12) is provided on one side of the hydraulic power tool sleeve (11). An adjusting bolt (13) is movably connected inside the mounting screw hole (12). A stress screw hole (14) is provided outside the hydraulic power tool sleeve (11). A stress bolt (15) is provided inside the stress screw hole (14). A fastening gasket (16) is provided at the bottom of the stress bolt (15). A stress block (17) is provided at the bottom of the fastening gasket (16). A machining tool (18) is movably connected inside the hydraulic power tool sleeve (11).

2. The precision-adjustable hydraulic collet for an ER toolholder according to claim 1, characterized in that: The internally threaded nut sleeve (5) is movably connected to the threaded mounting tube (3), and the center line of the internally threaded nut sleeve (5) coincides with the center line of the threaded mounting tube (3).

3. The precision-adjustable hydraulic collet for an ER toolholder according to claim 1, characterized in that: A resisting screw sleeve (6) is arranged on one side of the internally threaded nut sleeve (5), an inner groove (7) is provided on the outside of the resisting screw sleeve (6), a telescopic support sleeve (8) is arranged inside the inner groove (7), and a fastening bolt (9) penetrates the outside of the telescopic support sleeve (8).

4. The precision-adjustable hydraulic collet for an ER toolholder according to claim 3, characterized in that: The telescopic support sleeve (8) is movably connected to the abutment screw sleeve (6), and the fastening bolts (9) are distributed at equal intervals on the telescopic support sleeve (8).

5. The precision-adjustable hydraulic collet for an ER toolholder according to claim 1, characterized in that: The number of the mounting screw holes (12) is set to four, and the four mounting screw holes (12) are distributed in a ring array on the hydraulic power tool sleeve (11).

6. The precision-adjustable hydraulic collet for an ER toolholder according to claim 1, characterized in that: The stress bolt (15) is threadedly connected to the hydraulic power tool sleeve (11), and the center line of the machining tool (18) coincides with the center line of the hydraulic power tool sleeve (11).

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