CN216542682U - Cutter assembly - Google Patents
Cutter assembly Download PDFInfo
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- CN216542682U CN216542682U CN202122856029.8U CN202122856029U CN216542682U CN 216542682 U CN216542682 U CN 216542682U CN 202122856029 U CN202122856029 U CN 202122856029U CN 216542682 U CN216542682 U CN 216542682U
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- oil supply
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- hydraulic oil
- handle
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Abstract
The utility model discloses a cutter assembly, which comprises a cutter, a cutter handle, a shell and a pressure control valve, wherein the cutter handle is arranged on the shell; a hydraulic oil cavity and a hydraulic oil conveying hole are arranged in the cutter handle; a piston rod is arranged at the connecting end of the cutter and is arranged in the hydraulic oil cavity; the cutter handle is also provided with an end cover, and the position where the inner wall of the end cover through hole is contacted with the cutter is provided with a spline and a key groove which are matched and in sliding connection; the outer shell is sleeved outside the knife handle and is connected with the knife handle through a bearing; an oil supply ring groove is arranged in the shell, and the position of the oil supply ring groove is matched with the position of a hydraulic oil conveying hole in the cutter handle; an oil supply channel is arranged in the shell, an oil supply interface is arranged at the tail end of the oil supply channel, and a stop block is also arranged on the shell and is used for being fixedly connected with the basic equipment; the output end of the pressure control valve is connected with the oil supply interface through an oil pipe, and the input end of the pressure control valve is connected with the hydraulic source through an oil pipe. Therefore, the utility model has constant processing pressure and high processing precision.
Description
Technical Field
The utility model relates to the field of machining, in particular to a cutter assembly.
Background
The rolling method is a non-cutting method in the field of machining, and can not only make the surface of the workpiece to be machined reach very high smoothness, but also can raise the mechanical property of the workpiece to be machined. The essence of the rolling process is the use of high hardness, blade-free tools, steel balls or rollers, which create localized high pressures on the surface being worked. As the tool rolls along the surface to be processed, the elastic-plastic deformation of the surface material is formed, so that the microscopic peaks on the surface of the workpiece are flattened, and a strengthening layer with a certain thickness is formed on the surface. The wear resistance and fatigue strength of the parts are greatly improved due to the smooth surface and the increased hardness.
The engine is internally provided with a part called an oil sprayer sleeve, the conical surface of the oil sprayer sleeve needs to be rolled when the oil sprayer sleeve is installed, the current rolling mode is to fix a bush of a cutter at an oil sprayer sleeve opening, position the cutter so that the cutter does not swing in an oil sprayer sleeve hole, and roll the conical surface of the oil sprayer sleeve by utilizing the rotation of the cutter. There are the following problems:
firstly, the manual operation efficiency is low, the existing equipment used by people is the rocker drill processing, the problems are that the tool is frequently changed, the operation is totally dependent on manual operation, and the efficiency is difficult to improve because the manual operation causes 100% of total inspection of workpieces;
the second force is not easy to control, the tissue of the rolling area of the oil sprayer sleeve is weak, and in the rolling process, the rolling force is controlled, so that the force is larger than the local stress on the surface of the part, and the body is cracked; the force is small, the roughness cannot reach the ideal condition, the oil sprayer sleeve and the body are not in place to be attached, and the sealing is poor;
thirdly, the standard is not easy to grasp, and in the rolling process, because rigid processing is adopted, workers need to judge whether rolling is in place by using an empirical method, and repeated adjustment is carried out, so that the processing time is prolonged, and the requirement on the skills of the workers is high.
SUMMERY OF THE UTILITY MODEL
The technical problem to be solved by the utility model is as follows: a cutter assembly is provided.
In order to solve the technical problems, the technical scheme adopted by the utility model is as follows:
a cutter assembly comprises a cutter and a cutter handle;
the cutter handle comprises a connecting end and a power end, the connecting end is used for connecting an external power source, the power end comprises a hydraulic oil cavity, and an opening of the hydraulic oil cavity is formed in the end part, far away from the connecting end, of the power end; and
and one end of the piston rod is connected with the hydraulic oil cavity through the opening, and the other end of the piston rod is connected with the cutter.
Compared with the prior art, the utility model has the following technical effects:
constant-pressure hydraulic oil is conveyed to a hydraulic cavity in the cutter, the pressure compensation effect is realized by utilizing the constant pressure of the hydraulic oil, and the working end of the cutter is ensured to work under constant pressure all the time.
On the basis of the technical scheme, the utility model can be further improved as follows.
Further, the end connection of power end has the end cover, the end cover is used for the restriction the stroke of piston rod, the end cover includes apron and drum, the drum passes the apron, and with apron fixed connection, the drum constitutes the through-hole of end cover for supply the cutter to pass through, be equipped with the spline on the inner wall of drum, the position of cutter adaptation is equipped with the keyway or be equipped with the keyway on the inner wall of drum, the position of cutter adaptation is equipped with the spline, spline and keyway sliding connection.
The cutter comprises a cutter handle, a cutter head and a shell, wherein the cutter handle is sleeved with the shell; the hydraulic oil cavity is communicated with the hydraulic oil conveying hole in the cutter handle; an oil supply channel communicated with the oil supply annular groove is arranged in the shell, and an oil supply connector is arranged at the tail end of the oil supply channel.
The function of processing on a numerical control machine tool is realized by adopting a structure that a rolling bearing is arranged between a shell and a tool handle;
furthermore, the housing is also provided with a stop block for fixedly connecting with an infrastructure, which is a housing of a machine tool or other power source for fixing the tool assembly, a support of a table, or the like.
Further, the hydraulic control system also comprises a pressure control valve, wherein the output end of the pressure control valve is connected with the oil supply interface through an oil pipe, and the input end of the pressure control valve is connected with a constant-pressure hydraulic source through an oil pipe.
The method of controlling the oil pressure by adopting the pressure control valve further ensures the effect of constant pressure;
preferably, in the oil supply annular groove, be located hydraulic oil delivery hole both sides are equipped with rotation axis lip seal, ensure sealed effect, avoid hydraulic oil to leak.
Preferably, a sealing ring groove is formed in the piston rod, and an O-shaped sealing ring is sleeved in the sealing ring groove.
Preferably, the oil supply port of the housing is connected with a first automatic on-off valve. The first automatic switch valve is opened by applying a certain pressure to the outside, the valve body inside the first automatic switch valve is displaced, the outside pressure is removed, the first automatic switch valve is under the action of the internal elastic device, and the valve body is restored to be closed. So with outside hydraulic pipe fitting setting in suitable position, when the installation that realizes the handle of a knife, first automatic switch valve can be extrudeed in step to hydraulic pipe fitting, realizes hydraulic line's automatic connection. The effect of oil circuit self-locking after the cutter is pulled out from the main shaft is realized.
Preferably, the output end of the pressure control valve is connected with a second automatic switch valve, and the first automatic switch valve and the second automatic switch valve are in opposite flushing to realize communication of the oil supply pipeline. The communication of the closed hydraulic pipeline becomes very simple and convenient.
Preferably, an O-ring is disposed between the first automatic on-off valve and the second automatic on-off valve.
Preferably, the first automatic switching valve is provided in the stopper block. The occupied space of parts is reduced.
Preferably, the knife handle is further provided with a directional ring, the directional ring is provided with a positioning groove, the housing is further provided with a positioning key matched with the positioning groove, the positioning key is fixed at the end part of the positioning column, and the positioning column is arranged in a column groove in the housing through a spring. The positioning key structure is adopted on the positioning column to realize the self-locking effect of the knife handle and the shell.
Preferably, the oil supply channel is arranged in the column groove and the positioning column, and the first automatic switch valve is arranged at the end part of the positioning column. The space that equipment occupy has been reduced, and opening of first automatic switch valve needs certain stroke, and the separation of navigation key and constant head tank also needs certain stroke, unites two into one these two strokes, has simplified installation time.
Preferably, the number of the hydraulic conveying holes is 4, and the hydraulic conveying holes are uniformly arranged along the circumferential direction.
Drawings
FIG. 1 is a schematic view of the construction of the cutter assembly of the present invention;
fig. 2 is a partial cross-sectional structural schematic view of the cutter assembly of the present invention.
In the drawings, the parts names represented by the respective reference numerals are listed as follows:
1. a knife handle; 1.1, a hydraulic oil cavity; 1.2, hydraulic oil conveying holes; 1.3, end cover; 1.3.1, splines; 1.4, an orientation ring; 1.4.1, positioning grooves;
2. a housing; 2.1, oil supply ring groove; 2.2, an oil supply channel; 2.3, an oil supply interface; 2.4, a positioning key; 2.5, positioning columns; 2.6, column slots;
3. rolling and pressing a cutter; 3.1, a piston rod;
4. a pressure control valve; 5. a bearing; 6. a stopper block; 7. a lip-shaped seal ring; 8. an O-shaped sealing ring; 9. A first automatic on-off valve; 10. a second automatic on-off valve; 11. a spring.
Detailed Description
The principles and features of this invention are described below in conjunction with the following drawings, which are set forth by way of illustration only and are not intended to limit the scope of the utility model.
Fig. 1 and fig. 2 are schematic structural views of a cutter assembly according to the present invention. Comprises a knife handle 1, a shell 2, a rolling knife 3 (namely a knife tool) and a pressure control valve 4;
the tool holder 1 is used for connecting a machine tool main shaft, and a hydraulic oil cavity 1.1 and a hydraulic oil conveying hole 1.2 communicated with the hydraulic oil cavity 1.1 are arranged in the tool holder 1; the hydraulic oil conveying holes 1.2 are uniformly distributed in 4 along the circumferential direction.
The rolling cutter 3 comprises a connecting end and a working end, the connecting end is connected with a piston rod 3.1, the rolling cutter 3 is fixedly connected with the piston rod or is of an integrated structure, and the fixed connection mode comprises but is not limited to: the piston rod 3.1 is arranged in the hydraulic oil cavity 1.1 at one end far away from the connecting end; and a sealing ring groove is arranged on the outer peripheral surface of the piston rod 3.1 matched with the hydraulic oil cavity, and an O-shaped sealing ring 8 is sleeved in the sealing ring groove.
The power end of handle of a knife 1 still is connected with end cover 1.3, fixes the tip of handle of a knife 1, the through-hole in the middle of the end cover 1.3 is used for supplying rolling sword 3 to pass through, the through-hole inner wall of end cover 1.3 with the position of rolling sword 3 contact is equipped with paired, sliding connection's spline 1.3.1 and keyway, and spline 1.3.1 both can set up on end cover 1.3, also can set up on rolling sword 3, as long as can make end cover 1.3 and cutter 3 not produce the relative rotation operation in the circumferential direction, can freely slide in axial direction.
The shell 2 is sleeved outside the tool handle 1 and is connected with the tool handle 1 through a bearing 5; an oil supply ring groove 2.1 is arranged in the shell 2, and the position of the oil supply ring groove 2.1 is matched with the position of a hydraulic oil conveying hole 1.2 on the tool handle 1; and rotary shaft lip-shaped sealing rings 7 are arranged in the oil supply ring groove 2.1 and positioned at two sides of the hydraulic oil conveying hole 1.2. An oil supply channel 2.2 communicated with the common annular groove is arranged in the shell 2, and an oil supply connector 2.3 is arranged at the tail end of the oil supply channel 2.2.
And a first automatic switch valve 9 is arranged on an oil supply connector 2.3 of the shell 2. A certain pressure is applied to the outside of the first automatic switch valve 9, the valve body inside the first automatic switch valve 9 will displace, the valve is opened, the outside pressure is removed, the first automatic switch valve 9 is acted by the internal elastic device, and the valve body will restore to the original state to close the valve.
The output end of the pressure control valve 4 is provided with a second automatic switch valve 10, the first automatic switch valve 9 and the second automatic switch valve 10 are oppositely flushed to realize the communication of an oil supply pipeline, and an O-shaped sealing ring 8 is arranged between the first automatic switch valve 9 and the second automatic switch valve 10. And the input end of the pressure control valve 4 is connected with a hydraulic source through an oil pipe.
The shell 2 is also provided with a stop block 6, and the stop block 6 is used for being fixedly connected with the infrastructure equipment. The first automatic on-off valve 9 is provided in the stopper 6.
Still be equipped with directional ring 1.4 on the handle of a knife 1, be equipped with constant head tank 1.4.1 on the directional ring 1.4, still be equipped with the navigation key 2.4 with constant head tank 1.4.1 adaptation on the shell 2, navigation key 2.4 is fixed at the tip of reference column 2.5, reference column 2.5 is located in the post groove 2.6 on the shell 2 through spring 11.
The oil supply channel 2.2 is arranged in the column groove 2.6 and the positioning column 2.5, and the first automatic switch valve 9 is arranged at the end part of the positioning column 2.5.
When in use, the stop block 6 is arranged on the end surface of the main shaft of the machine tool and is butted with the end surface screw hole to limit the rotation of the shell 2.
The pressure control valve 4 is connected to the stop block 6 to control the pressure of the hydraulic oil, one end of the oil pipe is connected to the hydraulic station, and the other end of the oil pipe is connected with the pressure control valve 4 to convey the hydraulic oil.
The tool shank 1 is arranged on a main shaft of a machine tool, the automatic switch valve bodies in the stop block 6 and the positioning column 2.5 are butted to ensure that an oil path is smooth, and hydraulic oil enters an inner cavity through the pressure control valve 4 at constant pressure to provide constant pressure.
The tool handle 1 is provided with 4 hydraulic oil conveying holes 1.2 which are sealed by a rotary shaft lip-shaped sealing ring 7, so that hydraulic oil leakage is prevented, and a dustproof effect is achieved.
The middle of the knife handle 1 and the shell 2 are connected through a rolling bearing 5, so that the knife handle 1 can normally rotate along with the main shaft under the condition that the shell 2 is not moved.
After the positioning column 2.5 and the stop block 6 are butted, the positioning key 2.4 is lower than the orientation ring 1.4, the main shaft drives the cutter handle 1 to rotate, and the piston rod 3.1 is connected with the end cover of the cutter handle 1 through the spline 1.3.1 to drive the cutter to rotate.
The rolling cutter 3 is initially pushed to the longest state by hydraulic pressure, when the rolling cutter contacts an oil injector sleeve, part of hydraulic oil in a cylinder can be compressed to a constant-pressure hydraulic source, so that the contact pressure of the rolling cutter 3 and the oil injector sleeve is kept constant, a Z-axis depth is set in a machine tool program to ensure that the rolling cutter 3 is in contact with the oil injector sleeve, and then the required depth is removed through feeding.
After rolling, the spindle can be accurately stopped at a specified angle position through a 'spindle positioning' code of the machine tool, so that the key groove on the orientation ring 1.4 is just opposite to the positioning key 2.4, and after a cutter is pulled out, the positioning key 2.4 is bounced into the key groove to realize self-locking.
After the cutter is pulled out, the automatic switch valve bodies in the stop block 6 and the positioning column 2.5 are popped out to seal an oil way, so that hydraulic oil in the cylinder does not flow out, and air does not enter the cylinder.
According to the scheme, hydraulic oil is conveyed into the cutter, and the effect of pressure compensation is achieved by using the compressibility of the hydraulic oil;
the method of controlling the oil pressure by the pressure control valve 4 realizes the effect of constant pressure;
the function of processing on a numerical control machine tool is realized by adopting a structure that a rolling bearing 5 is arranged between the shell 2 and the tool handle 1;
the positioning column 2.5 adopts a positioning key 2.4 structure to realize the self-locking effect of the tool handle 1 and the shell 2;
the structure that the automatic switch valve body is designed inside the positioning column 2.5 and the stop block 6 realizes the self-locking effect of the oil circuit after the cutter is pulled out from the main shaft. The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. A cutter assembly comprising a cutter, characterized by further comprising:
the cutter handle comprises a connecting end and a power end, the connecting end is used for connecting an external power source, a hydraulic oil cavity is arranged in the power end, and an opening of the hydraulic oil cavity is formed in the end part, far away from the connecting end, of the power end; and
and one end of the piston rod is connected with the hydraulic oil cavity through the opening, and the other end of the piston rod is connected with the cutter.
2. The cutter assembly of claim 1, wherein an end cap is connected to the end of the power end remote from the connecting end, and a through hole in the middle of the end cap is used for a cutter to pass through;
the inner wall of the through hole is provided with a spline, and the cutter is provided with a key groove;
or, be equipped with the keyway on the inner wall of through-hole, be equipped with the spline on the cutter, spline and keyway sliding connection.
3. The cutter assembly according to claim 1 or 2, further comprising a housing, wherein the housing is sleeved outside the cutter handle and is connected with the cutter handle through a bearing; the hydraulic oil cavity is communicated with the hydraulic oil conveying hole in the cutter handle; an oil supply channel communicated with the oil supply annular groove is arranged in the shell, and an oil supply connector is arranged at the tail end of the oil supply channel.
4. The cutter assembly of claim 3, wherein the housing further comprises a stop block configured to be fixedly coupled to an infrastructure.
5. The cutter assembly according to claim 4, further comprising a pressure control valve, wherein an output end of the pressure control valve is connected with the oil supply interface through an oil pipe, and an input end of the pressure control valve is connected with a hydraulic pressure source through an oil pipe.
6. The cutter assembly according to claim 3, wherein rotary shaft lip seals are provided in the oil supply ring groove on both sides of the hydraulic oil delivery hole.
7. The cutter assembly of claim 5, wherein a first automatic on/off valve is connected to the oil supply port of the housing.
8. The cutter assembly according to claim 7, wherein the output end of the pressure control valve is connected with a second automatic switch valve, and the first automatic switch valve and the second automatic switch valve are oppositely flushed to realize the communication of the oil supply pipeline.
9. The cutting tool assembly according to claim 3, wherein the tool holder is further provided with a directional ring, the directional ring is provided with a positioning groove, the housing is further provided with a positioning key matched with the positioning groove, the positioning key is fixed at the end of a positioning column, and the positioning column is arranged in a column groove on the housing through a spring.
10. The cutting tool assembly of claim 8, wherein the oil supply passage is provided in a post groove, a positioning post, and the first automatic switching valve is provided at an end of the positioning post in the stopper block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122856029.8U CN216542682U (en) | 2021-11-19 | 2021-11-19 | Cutter assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122856029.8U CN216542682U (en) | 2021-11-19 | 2021-11-19 | Cutter assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216542682U true CN216542682U (en) | 2022-05-17 |
Family
ID=81575027
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122856029.8U Active CN216542682U (en) | 2021-11-19 | 2021-11-19 | Cutter assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216542682U (en) |
-
2021
- 2021-11-19 CN CN202122856029.8U patent/CN216542682U/en active Active
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