CN111331428A - Zero coordinate conversion tool, device and method for machining center machine tool inclined plane clamp - Google Patents
Zero coordinate conversion tool, device and method for machining center machine tool inclined plane clamp Download PDFInfo
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- CN111331428A CN111331428A CN202010192926.0A CN202010192926A CN111331428A CN 111331428 A CN111331428 A CN 111331428A CN 202010192926 A CN202010192926 A CN 202010192926A CN 111331428 A CN111331428 A CN 111331428A
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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
- B23Q17/00—Arrangements for observing, indicating or measuring on machine tools
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- 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
- B23Q17/00—Arrangements for observing, indicating or measuring on machine tools
- B23Q17/22—Arrangements for observing, indicating or measuring on machine tools for indicating or measuring existing or desired position of tool or work
Abstract
The invention provides a zero coordinate conversion tool for a machine tool inclined plane fixture of a machining center, which comprises a regular three-dimensional structure, a base and a positioning mechanism, wherein the regular three-dimensional structure can determine the three-dimensional shape of the machine tool inclined plane fixture through a limited number of points which are not on the same plane, the three-dimensional structure is arranged at the upper end of the base, the positioning mechanism is arranged at the bottom of the base, the three-dimensional structure comprises a sphere or a cylinder, and the axis extension line of the base passes through the center of the sphere or is intersected with the center line of the. The tool is combined with a clamping element and a machine tool to form a universal conversion condition and a conversion formula, the conversion formula is substituted into the known part size, the coordinate required by part machining can be obtained immediately, and after the coordinate is converted into a zero coordinate, the zero coordinate can be machined directly by using a program, so that the tool is very quick.
Description
Technical Field
The invention relates to the field of bevel machining of machining center parts, in particular to a zero coordinate conversion tool, a zero coordinate conversion device and a zero coordinate conversion method for a bevel clamp of a machining center machine tool.
Background
Currently, the machining center mostly adopts the following three methods for machining the inclined surface of the part:
1. method for drawing scriber by workpiece edge angle
After a workpiece is clamped by a clamp, a scriber of a machine tool is aligned with the edge of the workpiece by visual observation of a worker to find a numerical value Z1, then the vertical distance Z2 from the edge angle of the workpiece to the processed inclined plane is calculated according to the dimension provided on a drawing, and the zero point coordinate of the processed part is set by utilizing Z1-Z2. The existing disadvantages are: the edge of the workpiece has a chamfer or a burr, the front end of the scriber cannot be made too thin, the superposition of the chamfer and the burr can cause errors, the operation depending on visual inspection is too dependent on the capability of workers, errors are easy to occur, and if a detection program is added, the whole process is too long, and the efficiency is low.
2. By drawing the drawings directly
The size of the clamping tool and the size of the workpiece are obtained, the clamping tool and the workpiece with standard sizes are drawn on a drawing, and then required data are obtained by means of ruler or operation. The existing disadvantages are: the drawing structure size needs to be measured firstly, then drawing software is used, a computer is configured, the calculation amount is too large, the calculation is too complex, in addition, the number of clamp elements of each combination is extremely large, a drawing needs to be drawn in each batch, and for a highly customized production line, the workload is huge, and special people are needed for operation.
3. Simulated assembly through three-dimensional software
The three-dimensional software assembly mode is accurate, but needs to be trained, and has certain requirements on the performance of a computer in the processes of assembling, modeling and the like of a clamping die, and is difficult, time-consuming and easy to make mistakes for a common production worker.
In order to solve the above problems, people are always seeking an ideal technical solution.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, and provides a machining center machine tool inclined plane clamp zero point coordinate conversion tool, a device and a method which are quick, simple, strong in universality and convenient to operate.
In order to achieve the purpose, the invention adopts the technical scheme that: the utility model provides a machining center lathe inclined plane anchor clamps zero point coordinate conversion instrument, includes that can confirm the regular spatial structure of its three-dimensional shape through the finite point that is not on the coplanar, for example spheroid or cylinder, spatial structure installs in the base upper end, and positioning mechanism sets up in the bottom of base, and positioning mechanism is used for confirming the position of instrument on the clamping instrument, and spatial structure's shape setting then helps the user to obtain data as early as possible.
Basically, the axis extension line of the base passes through the center of the sphere or intersects with the center line of the cylinder, so that the calculation is convenient.
Basically, the base is in the shape of a column base.
Basically, the positioning mechanism comprises a positioning key.
Basically, the bottom of base is provided with magnet.
The utility model provides a machining center lathe inclined plane anchor clamps zero point coordinate conversion equipment, including angle support, foundatin plate and machining center lathe inclined plane anchor clamps zero point coordinate conversion instrument, the angle is supported including horizontally bottom surface and support inclined plane, the lower surface assembly of foundatin plate is on the support inclined plane that the angle was supported, the upper surface of foundatin plate sets up the location wire casing of grid formula, machining center lathe inclined plane anchor clamps zero point coordinate conversion instrument's positioning mechanism with the location wire casing matches, the foundatin plate is iron plate.
A method for carrying out zero coordinate conversion according to a zero coordinate conversion device of a machine tool inclined plane clamp of a machining center comprises the steps of selecting angle supports with complementary angles according to angles of inclined planes to be machined on workpieces, assembling the angle supports and a foundation plate, placing the inclined planes to be machined on the workpieces upwards, mounting the workpieces on the foundation plate, adjusting the lower end surface of each workpiece to be parallel to the edge of one positioning slot, mounting a zero coordinate conversion tool of the machine tool inclined plane clamp of the machining center on the foundation plate, and positioning the zero coordinate conversion tool and the positioning slots through a positioning mechanism;
the conversion is performed by:
1) a component physical model, which obtains a distance operation formula between an inclined plane to be processed on the workpiece and the center or the central line of the three-dimensional structure;
2) and starting the processing machine tool, controlling the probe to approach the three-dimensional structure from different directions, acquiring coordinates of a plurality of points on the surface of the three-dimensional structure, automatically calculating a central coordinate of the three-dimensional structure, and setting the central point as a workpiece zero point of a processing program.
3) Substituting the central coordinate or the central line equation of the three-dimensional structure into the distance operation formula obtained in the step 1) to obtain the actual coordinate of the bevel to be machined on the workpiece.
As mentioned above, in step 1), the distance operation formula is obtained as follows: according to the design size of a positioning wire groove of a foundation plate and the design size of a zero coordinate conversion tool of a machine tool slope clamp of a machining center, respectively obtaining the distance N between the lower end face of a workpiece and the center or the center line of the three-dimensional structure and the distance M between the center or the center line of the three-dimensional structure and the upper surface of the foundation plate, and then according to the design size of the workpiece, obtaining an operational formula of the distance oa between the center coordinate or the center line coordinate of the three-dimensional structure and the slope to be machined of the workpiece.
Compared with the prior art, the invention has outstanding substantive characteristics and remarkable progress, and particularly, the invention adopts the arrangement of a sphere and a cylinder, and obtains a central line equation of the centers of the sphere and the cylinder through formula operation by a probe on a machine tool of a machining center depending on at least four different positions of the sphere, namely a Z-axis coordinate, and then substitutes a relation equation between the design size of a tool, the size of a clamping tool and the size of a part to obtain the distance between the to-be-machined inclined plane of a workpiece and the center of the sphere and the center of the cylinder, further obtains the Z-axis coordinate of the to-be-machined inclined plane of the workpiece, sets the Z-axis coordinate as a zero point coordinate, and the coordinate of X, Y axis belongs to an intuitive assembly size, and can be directly obtained through assembly.
Through the addition of above-mentioned instrument, the data relation of the inclined plane Z axle coordinate is waited to process to the central point coordinate that has obtained a instrument and work piece in essence, this relation has the universality, the workman is when using, only need be close to spheroidal a plurality of difference through the probe, the lathe obtains the position at centre of sphere place automatically, just can wait to process the true Z axle coordinate on inclined plane through the operation equation that sets for the work piece, through operating the lathe, set it for the zero point coordinate of processing just can, it is very convenient to use, more importantly, use the probe to acquire spheroidal a plurality of difference, the lathe is automatic to be accomplished, only need to call out measure spheroidal procedure command can, can guarantee the accuracy of operation.
Drawings
Fig. 1 is a schematic structural diagram of a machining center machine tool slope clamp zero-point coordinate conversion device in an application state.
Fig. 2 is a side view of fig. 1.
Fig. 3 is a schematic structural diagram of a zero coordinate conversion tool of a machine tool bevel clamp of a machining center.
Fig. 4-6 are conversion relation operation diagrams of the zero point coordinate conversion device of the inclined plane clamp of the machining center under different conditions.
FIG. 7 is a schematic diagram of a prior art scriber in a state of application to a workpiece chamfering method.
In the figure: 1. a zero coordinate conversion tool of a machining center machine tool inclined plane clamp; 2. a sphere; 3. a base; 4. a positioning key; 5. a magnet; 6. a foundation plate; 7. supporting at an angle; 8. a workpiece; 9. an inclined plane is to be processed; 10. a probe.
Detailed Description
The technical solution of the present invention is further described in detail by the following embodiments.
Example 1
As shown in fig. 1-3, a zero coordinate transformation device for a bevel fixture of a machining center machine tool comprises a zero coordinate transformation tool 1 for a bevel fixture of a machining center machine tool, an angle support 7, and a base plate 6, wherein the tool comprises a regular three-dimensional structure capable of determining a three-dimensional shape of the tool through a limited number of points which are not on the same plane, in this embodiment, a sphere 2 is adopted, the sphere 2 is installed at the upper end of a base 3, a positioning key 4 is arranged at the bottom of the base 3, and a magnet 5 is further installed at the bottom to help the fixation of the tool.
In other embodiments, the three-dimensional structure may also be a cylinder or other three-dimensional structures capable of achieving the function;
the angle support 7 comprises a horizontal bottom surface and a support inclined surface, the lower surface of the foundation plate 6 is assembled on the support inclined surface of the angle support, the angle of the support inclined surface is set according to the inclination angle of the to-be-processed inclined surface of the to-be-processed workpiece, so that the to-be-processed inclined surface of the to-be-processed workpiece is a horizontal plane after the workpiece is clamped.
The upper surface of the foundation plate 6 is provided with a grid type positioning wire slot, and a positioning key is clamped in the positioning wire slot and used for determining the position of the zero coordinate conversion tool of the machine tool inclined plane fixture of the machining center on the foundation plate.
For convenience of operation, the base 3 is designed to be a pillar stand shape, and an axis extension line of the base 3 passes through the center of the sphere 2.
The method for performing zero coordinate conversion by adopting the zero coordinate conversion device of the machine tool inclined plane clamp of the machining center comprises the following steps:
firstly, a component physical model is set according to an assembled workpiece as a basis.
The method comprises the following steps of selecting an angle support 7 with a complementary angle according to the angle of an inclined plane 9 to be machined on a workpiece 8, assembling the angle support 7 and a foundation plate 6, placing the inclined plane to be machined of the workpiece 8 upwards, installing the workpiece 8 on the foundation plate 6, adjusting the lower end face of the workpiece 8 to be aligned with the edge of one positioning line slot, installing a zero coordinate conversion tool 1 of a machine tool inclined plane fixture of a machining center on the foundation plate 6, and positioning the zero coordinate conversion tool and the positioning line slot through a positioning key 4, which is also a real step of a scene to be machined by the workpiece 8, wherein the basis of a physical model depends on the structure, and under the structure, a physical model is constructed.
Under the physical model, the known data includes the following aspects: the drawing size of the workpiece 8, the distance between the center of a circle of the machining center machine tool inclined plane clamp zero-point coordinate conversion tool 1 and the foundation plate 6, and the distance between the center of a circle of the machining center machine tool inclined plane clamp zero-point coordinate conversion tool 1 and the lower end face of the workpiece 8.
The drawing size of the workpiece 8 is obtained through a drawing, the distance between the circle center of the machining center machine tool slope clamp zero-point coordinate conversion tool 1 and the foundation plate 6 is directly obtained through the design size of the tool, and the size between the circle center of the machining center machine tool slope clamp zero-point coordinate conversion tool 1 and the lower end face of the workpiece 8 is obtained through calculation according to the installation position of the tool and the size of the positioning wire slot in the foundation plate.
With reference to fig. 4, it is assumed that the sizes of the workpieces are known as B, C and α, the distance between the center of the zero point coordinate transformation tool of the bevel clamp of the machining center and the base plate is N, and the distance between the center of the zero point coordinate transformation tool of the bevel clamp of the machining center and the lower end surface of the workpiece is M.
The o-crossing point is taken as the perpendicular oa of the hypotenuse bc, connected to ob,
perpendicular od for drawing bd through o point
In the Rt △ odb, the first step,
db==C+N=C+6=42.453+6=48.453
ob=＝＝52.418
β=arcsin＝arcsin＝22.430°
γ=α－β=60°-22.430°=37.570°
in the Rt △ oab, the first,
oa=ob×sinγ=52.418×sin37.570°=31.961
∵ ob=......①
Od=M-B……②
db=C+N……③
bringing ②③ into ①
ob=……④
④ with γ = α - β β = arcsin ═ arcsin
β= arcsin（（M-B）/）
γ=α - arcsin（（M-B）/）…..⑤
Also has No. oa = ob × sin gamma … … ⑥
Substituting formula ④⑤ into ⑥ to obtain
oa=×sin［α－arcsin（（M-B）/）］
The relation equation between oa and the known data M, B, C, N and α is obtained, the equation is directly input into a background program of the machine tool, or an operation small program is separately manufactured, then, a worker only needs to operate a probe on the machine tool to obtain the coordinates of the o point at the center of the sphere and substitute the coordinates into the equation to obtain the coordinates Z of the to-be-machined inclined plane of the workpiece, and the X and Y coordinates are determined according to naked eyes without influencing the machining precision of the inclined plane.
Example 2
As shown in fig. 5, the workpiece sizes are H, B, A and α, the distance between the center of the machining center machine tool inclined plane fixture zero point coordinate conversion tool and the base plate is N, and the distance between the center of the machining center machine tool inclined plane fixture zero point coordinate conversion tool and the lower end surface of the workpiece is M.
In the Rt △ ebc, the content,
eb =ec/tgα=(B-A)/tg60°=(30-10) /tg60°=11.547
c=H-eb=H-(B-A)/tg60°=54-(30-10) /tg60°=42.453
∴c= H-(B-A)/tgα°
∴oa=×sin［α－arcsin（（M-B）/）］
the equation of the relationship between oa and the known data M, H, B, A, N and α is obtained, and the coordinate Z of the bevel to be machined can be obtained by the same subsequent processing steps as in example 1.
Example 3
As shown in fig. 6, it is known that the workpiece size is H, B, A, C, the distance between the center of the zero point coordinate transformation tool of the bevel fixture of the machining center and the base plate is N, and the distance between the center of the zero point coordinate transformation tool of the bevel fixture of the machining center and the lower end surface of the workpiece is M.
In the Rt △ ebc, the content,
tgα=ec/eb
tgα=（B-A）/（H-C）
α=arctg（B-A）/（H-C）……⑦
bring ⑦ into
oa=×sin［α－arcsin（（M-B）/）］
Give oa = × sin [ arctg (B-A)/(H-C) -arcsin ((M-B) /) ]
The equation of the relationship between oa and the known data M, H, B, A, C, N is obtained, and the coordinate Z of the bevel to be machined can be obtained by the same subsequent processing steps as in example 1.
Through the three embodiments, different drawing data are provided, the relation between oa and the drawing data and the relation between M and N can be obtained, the vertical distance from the center of the sphere to the machined inclined plane is calculated, and the purpose is finally achieved.
In the actual use process, the relation equations constructed in the three modes are made into a program, 7 input items of M, H, B, A, C, N and α are set, wherein M is usually a fixed value, after a tool is assembled on a foundation plate, an N value can be obtained, then a plurality of data given in a drawing are respectively filled in, the oa value can be automatically calculated, the G54-59 code carried by a machine tool is utilized, the central coordinate of a sphere is measured by a probe, the Z-axis coordinate of the inclined plane to be machined is finally obtained, and the establishment of the workpiece coordinate is completed through setting.
Finally, it should be noted that the above examples are only used to illustrate the technical solutions of the present invention and not to limit the same; although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art will understand that: modifications to the specific embodiments of the invention or equivalent substitutions for parts of the technical features may be made; without departing from the spirit of the present invention, it is intended to cover all aspects of the invention as defined by the appended claims.
Claims (9)
1. The utility model provides a machining center lathe inclined plane anchor clamps zero point coordinate conversion instrument which characterized in that: the three-dimensional structure is arranged at the upper end of the base, and the positioning mechanism is arranged at the bottom of the base.
2. The machining center machine tool bevel fixture zero point coordinate transformation tool of claim 1, characterized in that: the three-dimensional structure comprises a sphere or a cylinder, and the axis extension line of the base passes through the center of the sphere or intersects with the center line of the cylinder.
3. The machining center machine tool bevel fixture zero point coordinate transformation tool of claim 1, characterized in that: the base is in a column base shape.
4. The machining center machine tool bevel fixture zero point coordinate conversion tool according to any one of claims 1 to 3, characterized in that: the positioning mechanism comprises a positioning key.
5. The machining center machine tool bevel fixture zero point coordinate conversion tool according to any one of claims 1 to 3, characterized in that: and a magnet is arranged at the bottom of the base.
6. The utility model provides a machining center lathe inclined plane anchor clamps zero point coordinate conversion equipment which characterized in that: including angle brace, foundatin plate and the machining center lathe inclined plane anchor clamps zero point coordinate conversion instrument of any of claims 1-5, the angle brace includes horizontally bottom surface and support inclined plane, the lower surface assembly of foundatin plate is on the support inclined plane of angle brace, the upper surface of foundatin plate sets up the location wire casing of grid formula, machining center lathe inclined plane anchor clamps zero point coordinate conversion instrument's positioning mechanism with the location wire casing matches.
7. The machining center machine tool bevel fixture zero point coordinate transformation device according to claim 6, characterized in that: the foundation plate is an iron plate.
8. A method for zero-point coordinate transformation of the machining center machine tool bevel fixture zero-point coordinate transformation device according to claim 6 or 7, characterized in that: selecting angle supports with complementary angles according to the angles of the inclined planes to be machined on the workpieces, then assembling the angle supports and the foundation plate, placing the inclined planes to be machined on the workpieces upwards, then installing the workpieces on the foundation plate, adjusting the lower end surface of the workpieces to be aligned with the edge of one positioning line slot, then installing the zero-point coordinate conversion tool of the inclined plane fixture of the machining center machine tool on the foundation plate, and positioning the zero-point coordinate conversion tool and the positioning line slot through a positioning mechanism;
the conversion is performed by:
1) a component physical model, which obtains a distance operation formula between an inclined plane to be processed on the workpiece and the center or the central line of the three-dimensional structure;
2) starting a processing machine tool, controlling the probe to approach the three-dimensional structure from different directions, acquiring coordinates of a plurality of points on the surface of the three-dimensional structure, and calculating a central coordinate or a central line equation of the three-dimensional structure;
3) substituting the central coordinate or the central line equation of the three-dimensional structure into the distance operation formula obtained in the step 1) to obtain the actual coordinate of the bevel to be machined on the workpiece.
9. The method of claim 8, wherein: in step 1), the distance operation formula is obtained by: according to the design size of a positioning wire groove of a foundation plate and the design size of a zero coordinate conversion tool of a machine tool slope clamp of a machining center, respectively obtaining the distance N between the lower end face of a workpiece and the center or the center line of the three-dimensional structure and the distance M between the center or the center line of the three-dimensional structure and the upper surface of the foundation plate, and then according to the design size of the workpiece, obtaining an operational formula of the distance oa between the center coordinate or the center line coordinate of the three-dimensional structure and the slope to be machined of the workpiece.
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| CN117492409A (en) * | 2024-01-03 | 2024-02-02 | 深圳市钧诚精密制造有限公司 | Method, system and medium for acquiring zero point coordinates by five-axis inclination single angle |
| CN117492409B (en) * | 2024-01-03 | 2024-03-08 | 深圳市钧诚精密制造有限公司 | Method, system and medium for acquiring zero point coordinates by five-axis inclination single angle |
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