CN115351575A - Angle-variable knife handle mechanism for numerical control machine tool - Google Patents
Angle-variable knife handle mechanism for numerical control machine tool Download PDFInfo
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- CN115351575A CN115351575A CN202211199733.3A CN202211199733A CN115351575A CN 115351575 A CN115351575 A CN 115351575A CN 202211199733 A CN202211199733 A CN 202211199733A CN 115351575 A CN115351575 A CN 115351575A
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- numerical control
- tool
- control machine
- shaft
- bearing seat
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
- B23Q3/12—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for securing to a spindle in general
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- Mechanical Engineering (AREA)
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Abstract
The invention discloses a variable-angle knife handle mechanism for a numerical control machine tool, which comprises a knife handle shaft sleeved with a main shaft of the numerical control machine tool, a cutter mounting shaft for sleeved connection of a cutter and a driving assembly for realizing axial movement of the cutter mounting shaft; the tool mounting shaft and the tool mounting shaft realize the rotary motion of the tool mounting shaft relative to the tool shank shaft through a first universal joint; the cutter handle shaft and the cutter mounting shaft are respectively mounted on the numerical control machine tool through a first bearing seat and a second bearing seat; the first bearing seat and the second bearing seat are respectively hinged with the connecting rod assembly. The numerical control machining center is simple in structure and low in cost, can effectively expand and improve the machining function of the numerical control machining center under the condition of not changing the basic structure of the conventional numerical control machining center, realizes transformation and upgrading of the numerical control machining center, and has the technical advantage of high cost performance.
Description
Technical Field
The invention belongs to the technical field of numerical control machining, and particularly relates to a variable-angle tool shank mechanism for a numerical control machine tool, which can be used for the numerical control machine tool.
Background
With the social development, the numerical control machine tool becomes a new processing device, and the numerical control processing technology is taken as the basis of the modern mechanical manufacturing technology, so that the mechanical manufacturing process is changed remarkably. Compared with the traditional machining technology, the modern numerical control machining technology has a multi-axis linkage function. The multi-axis generally means that one machine tool has motion characteristics of 4 axes and more, so that the surface cutting machining function of more complex parts can be realized. The existing industrial multi-shaft processing equipment has the defects of complex structure, large occupied area, high cost, difficult operation, high danger coefficient degree, difficult processing of tiny fine components and the like.
Disclosure of Invention
The invention mainly solves the technical problem of providing a variable-angle tool holder mechanism for a numerical control machine tool, applies a ball cage type universal joint transmission device to constant-speed rotary motion transmission under the condition of variable included angle between a tool holder shaft and a tool mounting shaft of a numerical control machining center, breaks through the limitation that the tool holder of a spindle of the existing machine tool only has one fixed and rigid axis, and can only realize relative translation motion between a tool and a workpiece along the directions of X, Y and Z on the three-axis numerical control machining center, so that the azimuth angle of the tool of the three-axis numerical control machining center can also realize rotation around the ball cage type universal joint center, thereby achieving the function of a four-axis numerical control machine tool on the cutting function, namely realizing the rotary upgrading of the numerical control machining center.
In order to solve the technical problems, the invention adopts a technical scheme that: a variable-angle knife handle mechanism for a numerical control machine tool comprises a knife handle shaft sleeved with a main shaft of the numerical control machine tool, a cutter mounting shaft for sleeved connection of a cutter and a driving assembly for realizing axial movement of the cutter mounting shaft;
the tool mounting shaft and the tool mounting shaft realize the rotary motion of the tool mounting shaft relative to the tool mounting shaft through a first universal joint;
the cutter handle shaft and the cutter mounting shaft are respectively mounted on a numerical control machine through a first bearing seat and a second bearing seat;
the first bearing seat and the second bearing seat are respectively hinged with the connecting rod assembly.
The driving assembly comprises a servo electric cylinder, a first rotating winch and a second rotating winch, wherein the first rotating winch and the second rotating winch are respectively connected with a first bearing seat and a second bearing seat through a push-pull rod;
the cylinder body end of the servo electric cylinder is hinged with the push-pull rod of the first bearing seat through the first rotating hinge, and the telescopic rod end of the servo electric cylinder is hinged with the push-pull rod of the second bearing seat through the second rotating hinge.
Furthermore, the connecting assembly includes a second universal joint, a first connecting rod, and a second connecting rod, where the first connecting rod and the second connecting rod are connected by the second universal joint, the first connecting rod is hinged to the push-pull rod of the first bearing block, and the second connecting rod is hinged to the push-pull rod of the second bearing block.
Furthermore, the tool shank shaft and the tool mounting shaft are respectively and rotatably connected with the first bearing block and the second bearing block through bearings.
Further, the cutter mounting shaft is sleeved with the spiral milling cutter, and the cutter mounting shaft and the spiral milling cutter are fixedly connected through the cutter chuck.
Furthermore, a Morse conical surface used for being connected with a main shaft of a numerical control machine tool is machined at the end part of the cutter handle shaft.
Further, the first universal joint is a rzeppa universal joint.
Further, the second universal joint is a ball hinge.
The invention has the beneficial effects that:
the invention applies the transmission principle of the rzeppa universal joint mechanism to the transmission field of the main shaft for processing the numerical control machine tool in a breakthrough way, and can dynamically change the included angle between the main shaft tool shank shaft and the tool mounting shaft through the actuation of the servo electric cylinder while realizing the stable transmission of the rotary motion of the main shaft of the machine tool to the tool; the invention has the advantages of simple structure, low cost, easy manufacture and the like.
Drawings
FIG. 1 is a schematic diagram of the present invention.
Detailed Description
The following detailed description of the preferred embodiments of the present invention, taken in conjunction with the accompanying drawings, will make the advantages and features of the invention easier to understand by those skilled in the art, and thus will clearly and clearly define the scope of the invention.
Example (b): a variable-angle tool holder mechanism for a numerical control machine tool is characterized in that as shown in figure 1, a tool holder shaft 1 serves as an input shaft of the whole angle-adjustable main shaft tool holder mechanism, a tool mounting shaft 8 serves as an output shaft, and a Morse conical surface 9 is machined at the end of the tool holder shaft 1 and used for being fixedly matched with a main shaft of the machine tool. Rotational movement between the tool shank shaft 1 and the tool mounting shaft 8 is transmitted at a constant velocity through the birfield joint 12.
The first bearing seat 2 and the second bearing seat 7 are respectively hinged with a first connecting rod 14 and a second connecting rod 15 of the connecting rod assembly, the first connecting rod 14 and the second connecting rod 15 are hinged through a spherical hinge 13, and the hinged points are positioned on a plane formed by the intersection of the tool shank shaft and the axis of the tool mounting shaft.
Through first rotation hinge 5, second rotation hinge 6, the concertina movement of servo electric cylinder 4 can be changed into the swing of cutter installation axle 8 around ball cage formula universal joint 12 center, makes the contained angle dynamic change between the axis of cutter installation axle 8 and the axis of handle axle 1, and spiral milling cutter 11 can produce the swing feed motion around ball cage formula universal joint 12 center promptly to upgrade into the four-axis numerical control machine tool with triaxial machine tool function.
The tool shank 1 and the tool mounting shaft 8 are supported by the first bearing housing 2 and the second bearing housing 7, respectively, via bearings. Push-pull rods 3 are fixed on the first bearing seat 2 and the second bearing seat 7 (or are integrated with the bearing seats), and the push-pull rods of the bearing seats on two sides are respectively hinged with a cylinder body and a telescopic rod of the servo electric cylinder 4 through a first rotating hinge 5 and a second rotating hinge 6.
The cutter mounting shaft is sleeved with a spiral milling cutter 11, and the cutter mounting shaft is fixedly connected with the spiral milling cutter through a cutter chuck 10.
The axis of the tool shank shaft is intersected with the axis of the tool mounting shaft, a Morse conical surface is processed at the end part of the tool shank shaft and is used for being fixedly matched with a main shaft, and the ball cage type universal joint is used for transmitting the rotary motion of the tool shank shaft of the main shaft. The servo electric cylinder actuates to dynamically change the included angle between the axis of the tool holder shaft and the axis of the tool mounting shaft, so that the tool has a swing freedom degree around the center of the rzeppa universal joint, and a three-axis processing machine tool can be functionally upgraded into a four-axis processing machine tool.
The invention applies the ball cage type universal joint transmission device to the constant speed rotation motion transmission under the condition of variable included angle between the tool shank shaft and the tool mounting shaft of the numerical control machining center, breaks through the limitation that the tool shank of the spindle of the existing machine tool only has one fixed and rigid axis, and only can realize the relative translation motion between the tool and the workpiece along the X, Y and Z directions on the three-axis numerical control machining center, so that the azimuth angle of the tool of the three-axis numerical control machining center can also realize the rotation around the ball cage type universal joint center, thereby achieving the function of a four-axis numerical control machine tool on the cutting function, namely realizing the transformation upgrading of the numerical control machining center. The numerical control machining center is simple in structure and low in cost, can effectively expand and improve the machining function of the numerical control machining center under the condition of not changing the basic structure of the conventional numerical control machining center, realizes transformation and upgrading of the numerical control machining center, and has the technical advantage of high cost performance.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all equivalent structural changes made by using the contents of the present specification and the drawings, or applied directly or indirectly to other related technical fields, are included in the scope of the present invention.
Claims (8)
1. The utility model provides a handle of a knife mechanism of variable angle for digit control machine tool which characterized in that: the numerical control machine tool comprises a tool shank shaft sleeved with a main shaft of the numerical control machine tool, a tool mounting shaft for sleeved connection of a tool and a driving assembly for realizing axial movement of the tool mounting shaft;
the tool mounting shaft and the tool mounting shaft realize the rotary motion of the tool mounting shaft relative to the tool shank shaft through a first universal joint;
the cutter handle shaft and the cutter mounting shaft are respectively mounted on the numerical control machine tool through a first bearing seat and a second bearing seat;
the first bearing seat and the second bearing seat are respectively hinged with the connecting rod assembly.
2. The variable angle shank mechanism for numerical control machine tools according to claim 1, characterized in that: the driving assembly comprises a servo electric cylinder, a first rotating winch and a second rotating winch, and the first rotating winch and the second rotating winch are respectively connected with the first bearing seat and the second bearing seat through push-pull rods;
the cylinder body end of the servo electric cylinder is hinged with the push-pull rod of the first bearing seat through the first rotating hinge, and the telescopic rod end of the servo electric cylinder is hinged with the push-pull rod of the second bearing seat through the second rotating hinge.
3. The variable angle shank mechanism for numerical control machine tools according to claim 1, characterized in that: the connecting assembly comprises a second universal joint, a first connecting rod and a second connecting rod, the first connecting rod and the second connecting rod are connected through the second universal joint, the first connecting rod is hinged to the push-pull rod of the first bearing seat, and the second connecting rod is hinged to the push-pull rod of the second bearing seat.
4. The variable angle shank mechanism for numerical control machine tools according to claim 1, characterized in that: the cutter handle shaft and the cutter mounting shaft are respectively in rotary connection with the first bearing block and the second bearing block through bearings.
5. The variable angle shank mechanism for numerical control machine tools according to claim 1, characterized in that: the cutter mounting shaft is sleeved with the spiral milling cutter, and the cutter mounting shaft is fixedly connected with the spiral milling cutter through the cutter chuck.
6. The variable angle shank mechanism for numerical control machine tools according to claim 1, characterized in that: and a Morse conical surface used for being connected with a main shaft of a numerical control machine tool is processed at the end part of the tool shank shaft.
7. The variable angle shank mechanism for numerical control machine tools according to claim 1, characterized in that: the first universal joint is a rzeppa universal joint.
8. The variable angle shank mechanism for numerical control machine tools according to claim 3, characterized in that: the second universal joint is a ball hinge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211199733.3A CN115351575A (en) | 2022-09-29 | 2022-09-29 | Angle-variable knife handle mechanism for numerical control machine tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211199733.3A CN115351575A (en) | 2022-09-29 | 2022-09-29 | Angle-variable knife handle mechanism for numerical control machine tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115351575A true CN115351575A (en) | 2022-11-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211199733.3A Pending CN115351575A (en) | 2022-09-29 | 2022-09-29 | Angle-variable knife handle mechanism for numerical control machine tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115351575A (en) |
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2022
- 2022-09-29 CN CN202211199733.3A patent/CN115351575A/en active Pending
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