CN220740403U

CN220740403U - Numerical control machining mistake proofing frock

Info

Publication number: CN220740403U
Application number: CN202223362308.XU
Authority: CN
Inventors: 常作伟; 秦世俊; 揣云冬; 段德进
Original assignee: Harbin Aircraft Industry Group Co Ltd
Current assignee: Harbin Aircraft Industry Group Co Ltd
Priority date: 2022-12-14
Filing date: 2022-12-14
Publication date: 2024-04-09
Anticipated expiration: 2032-12-14

Abstract

The utility model discloses a numerical control machining error-proofing tool, and relates to the technical field of numerical control machining. One specific embodiment of the tool comprises: the tool comprises a tool body 1, a first boss 11 and a second boss 12 are respectively connected to two ends of the tool body, the diameter of the first boss 11 and/or the diameter of the second boss 12 are larger than that of the tool body 1, and the central axis of the first boss 11 and/or the central axis of the second boss 12 are coincided with the central axis of the tool body 1; the outer edges of the first boss 11 and/or the second boss 12 further comprise chamfer angles 2, and the inner edges of the first boss 11 and/or the second boss 12 comprise step surfaces 4; the outer ends of the first boss 11 and/or the second boss 12 further comprise screw holes 5, and the screw holes 5 are located on the central axis of the first boss 11. The method is used for testing the cutter of the numerical control machine tool.

Description

Numerical control machining mistake proofing frock

Technical Field

The utility model relates to the technical field of numerical control machining, in particular to a numerical control machining error-proofing tool.

Background

With the wide application of numerical control processing technology, particularly in the aviation field, the numerical control processing efficiency and the processing quality have very high requirements. The numerical control machining center operator needs to manually input tool data information into the machine tool system when preparing tools and adjusting the sizes of workpieces. Such as: cutter length, radius, etc. In the input tool values, if the input values are wrong, the parts are out of tolerance or scrapped, and the quality and delivery schedule of the parts are affected. The utility model provides a practical and feasible numerical control error proofing tool application method, which can realize the functions of program and station or station-station association control, station or station-station association management, program and processing direction or angle distribution association management, warning information process management and the like, and further reduce the human loss in the numerical control processing process and the quality hidden trouble in the numerical control processing of a machining enterprise through on-site processing verification.

And preparing a cutter and a tool by an operator according to the specification of the technical procedure during numerical control processing. By applying the numerical control error proofing tool, on one hand, the error tools can be prevented from being used by operators during processing, and on the other hand, the tools and regulations given by technicians in programming can be prevented from being inconsistent. The specific application method comprises the following steps: and manufacturing a universal I-shaped error-proofing tool, and compiling an error-proofing macro program aiming at the FANUC system numerical control system. When the numerical control machine tool operator needs to preset the upper and lower error ranges (N20-N70) allowed by the cutter length and radius in application, after the cutter parameters are finely adjusted, the program is operated by testing cutting on an error-proof tool. If the numerical value is wrong, the machine tool stops running, and the corresponding parameter information and the error value of the wrong cutter are prompted on the operation panel. Meanwhile, the program can be added to the next machine tool changing program section by a subprogram method, so that the quality problem of parts caused by errors is effectively prevented, and the labor intensity of operators is reduced.

Disclosure of Invention

In view of this, the disclosure provides a numerical control processing error-proofing tool, through trial cutting on the error-proofing tool, an operator can quickly find errors of the numerical value, the coordinate system and the Z value of a cutter (length, radius and bottom R of the cutter), and can prevent the quality from being out of tolerance or scrapped due to the errors.

To achieve the above object, according to one aspect of the present disclosure, there is provided a numerical control machining error-proofing tool, including: the tool comprises a tool body 1, a first boss 11 and a second boss 12 are respectively connected to two ends of the tool body, the diameter of the first boss 11 and/or the diameter of the second boss 12 are larger than that of the tool body 1, and the central axis of the first boss 11 and/or the central axis of the second boss 12 are coincided with the central axis of the tool body 1; the outer edges of the first boss 11 and/or the second boss 12 further comprise chamfer angles 2, and the inner edges of the first boss 11 and/or the second boss 12 comprise step surfaces 4; the outer ends of the first boss 11 and/or the second boss 12 further comprise screw holes 5, and the screw holes 5 are located on the central axis of the first boss 11.

Optionally, the tool body further includes a holding portion 10, and the holding portion 10 is a groove surrounding the tool body 1.

Optionally, the screw hole 5 is a countersunk screw hole.

Optionally, the depth of the screw hole 5 does not exceed the thickness of the first boss 11 and/or the second boss 12.

Optionally, the method further comprises: the machine tool comprises a connecting base 7 and a connecting screw rod 9, wherein one end of the connecting screw rod 9 is connected with the screw hole 5, the other end of the connecting screw rod is connected with the connecting base 7, and the connecting base 7 is used for being connected with a machine tool.

Optionally, the connection base 7 is a T-shaped base.

According to the method, an error-proofing tool is fastened on the surface of a numerical control machine tool, a numerical control detection tool program is executed, a tool can move on the upper surface of the tool, and the numerical value error of the length of the tool is detected; the cutter moves along the outer contour, and the numerical error of the radius of the cutter is detected; detecting the numerical error of the R angle at the bottom of the tool by moving the tool in the standard chamfering of the tool; and (3) detecting the error of the reverse elongation degree of the tool by using the T-shaped tool and reversely pulling the tool stage surface.

Further effects of the above-described non-conventional alternatives are described below in connection with the embodiments.

Drawings

The drawings are included to provide a better understanding of the utility model and are not to be construed as unduly limiting the utility model. Wherein:

FIG. 1 is a cross-sectional view of a schematic structural diagram of a numerical control machining error-proofing tool according to the utility model;

FIG. 2 is a top view of a numerical control machining error proofing fixture according to the present utility model mounted on a numerically controlled machine tool bed;

FIG. 3 is a side view of a tool for preventing error in numerical control machining mounted on a surface of a numerical control machine tool according to the present utility model;

reference numerals illustrate: the tool comprises a 1-tool body, a 11-first boss, a 12-second boss, a 2-chamfer, a 3-tool outer contour, a 4-step surface, a 5-threaded hole, a 6-tool lower surface, a 7-connection base, an 8-machine tool surface, a 9-connection screw and a 10-clamping part.

Detailed Description

Exemplary embodiments of the present utility model will now be described with reference to the accompanying drawings, in which various details of the embodiments of the present utility model are included to facilitate understanding, and are to be considered merely exemplary. Accordingly, those of ordinary skill in the art will recognize that various changes and modifications of the embodiments described herein can be made without departing from the scope and spirit of the utility model. Also, descriptions of well-known functions and constructions are omitted in the following description for clarity and conciseness.

Fig. 1 is a cross-sectional view of a schematic structural diagram of a numerical control machining error-proofing tool according to the present utility model, as shown in fig. 1, a tool body 1 is cylindrical, two ends of the tool body are respectively connected with a first boss 11 and a second boss 12, the diameter of the first boss 11 and/or the second boss 12 is larger than that of the tool body 1, and the central axis of the first boss 11 and/or the central axis of the second boss 12 coincides with the central axis of the tool body 1; the outer edges of the first boss 11 and/or the second boss 12 further comprise a chamfer 2, and the inner edges of the first boss 11 and/or the second boss 12 comprise a step surface 4; the outer ends of the first boss 11 and/or the second boss 12 further comprise screw holes 5, and the screw holes 5 are located on the central axis of the first boss 11. The shape of the outer contour of the error-proofing tool is set according to the movement track of the numerical control machining tool, so that whether the numerical control program is set correctly can be verified.

According to one embodiment of the disclosure, before numerical control machining of a product, a numerical control macro program mode is adopted to carry out feature programming on a tool, a preset error proofing subprogram is called, the tool executes error proofing motion corresponding to the error proofing tool, and parameters such as correctness of program origin setting, correct use of the diameter and the root R of the tool, correct input of a tool setting Z value and the like are detected and identified. Processing according to the specific situation of error warning, if the cutter directly collides with the error-proof tool in the movement process, indicating that the original point value is wrong, and determining the original point of the coordinate value again; when the chamfer 2 part is milled and damaged in the circular movement process of the cutter, the improper use of the cutter R or the cutter blade is reflected; when the tool circularly moves to mill a cylindrical part (namely, the tool outer contour 3), the error of the diameter selection of the tool is indicated; when the top surface (i.e., the top surface of the first boss 11) is milled during the transverse rectilinear motion of the tool, it is explained that the input of the tool setting Z value is problematic. Meanwhile, the programmed numerical control macro program is embedded into the next row of tool changing instructions of the machining program in a numerical control subprogram mode, so that the tool of the main shaft of the numerical control machine tool is controlled to be detected at the tool when the tool is replaced each time, the contact clearance between the tool and the tool is required to be observed visually during each detection, the clearance between the conventional vertical tool is larger than the set range, the numerical value of the tool is larger and wrong, the clearance is smaller than the set range and the tool is damaged, the numerical value of the tool is smaller and wrong, the judgment of the tool length clearance of the reverse-pulling T-shaped (namely the step surface 4) tool is opposite, and an operator of the numerical control machining center can find problems in time and prevent errors by detecting the numerical value of the tool at the tool.

The macro program error-proofing application is mainly characterized by that in the course of main program operation, the difference value of previous stage angle, original point and tool setting position value is recorded by calling sub-macro program, then the correspondent parameter difference value is compared, and the code section is preset so as to prompt alarm or interrupt operation. The statement of the error-proofing program module is generally placed after the first Z-axis positioning (such as G90G 0G 54Z 300) program section in the main program and before translation, rotation, mirroring, proportional polar coordinates and quick positioning X, Y axes, and the main purpose of the statement is to raise the cutter to a safe position, so that the error-proofing module is prevented from cutting a workpiece when the current coordinate system and coordinate values are identified.

(1) FANUC system error-proofing procedure call

G65 P80000 Dxx Rxx Qxx Sxx

Annotation: xx is a numerical value; dxx is the cutter diameter; rxx is a tool fillet/tool attribute value; qxx is the error proofing table diameter; sxx is a station number.

(2) Error-proofing macro-ingredient program description:

％

n20#11= 188.188 (TOOL_L preset knife length)

N30#12=0.10 (+l knife length forward tolerance)

N40#13= -0.10 (-L knife length negative tolerance)

N50#14=10 (TOOL_R preset TOOL radius)

N60#15=0.1 (+r radius forward tolerance)

N70# 16= -0.1 (-R radius negative tolerance)

N80#17＝#[2200+#4111]

N90#18＝#[2000+#4111]

N100#19＝#[13000+#4107]

N110#20＝#[12000+#4107]

N111IF[#11NE#17]GOTO150

N112IF[#20NE0]GOTO156

N120IF[#12LT#18]GOTO160

N110IF[#18LT#13]GOTO200

N130IF[#15LT[#19-#14]]GOTO240

N140IF[[#19-#14]LT#16]GOTO280

M99

N150#3000＝5(TOOL L ERROR)

N153M00

N155GOTO150

N156#3000＝6(TOOL WR ERROR)

N157M00

N158GOTO156

N160#3000＝1(TOOL+WL ERROR)

N170M00

N180GOTO160

N200#3000＝2(TOOL-WL ERROR)

N210M00

N220GOTO200

N240#3000＝3(TOOL+R ERROR)

N250M00

N260GOTO240

N280#3000＝4(TOOL-R ERROR)

N290M00

N300GOTO280

N310M30

％

(3) Macro program error-proof alarm

And when the value of the variable #3000 is 0-200, the CNC stops running and alarms, and the report number and the alarm information of 26 characters are not more than reality on the CNC screen, wherein the report number is the value of the variable #3000 plus 3000.

# 3000=1 (tol NOT FOUND) alarm screen: 3001TOOL NOT FOUND cutter NOT FOUND;

# 3000=2 (COMMON OFFSET ERROR) on-screen reality: 3002COMMON OFFSET ERROR common coordinate system offset errors;

# 3000=3 (STEP ERROR) on-screen reality: 3003STEP ERROR station ERROR;

# 3000=4 (ANGLE ERROR) on-screen reality: 3004ANGLE ERRROR ANGLE error.

Fig. 3 is a side view of a tool for preventing an error in a numerical control machining process according to the present utility model mounted on a surface of a numerical control machine tool according to an embodiment of the present disclosure, and as shown in fig. 3, the tool body further includes a holding portion 10, and the holding portion 10 is a groove surrounding the tool body 1. Is used for assisting in fixing the error-proofing tool.

According to one embodiment of the present disclosure, screw 5 is a countersunk screw. The lower surface 6 of the tool can be tightly attached to the machine tool surface 8.

Fig. 2 is a top view of a tool for preventing an error in a numerical control machining process according to the present utility model mounted on a surface of a numerical control machine, and as shown in fig. 2 and 3, according to an embodiment of the present disclosure, a depth of a screw hole 5 does not exceed a thickness of a first boss 11 and/or a second boss 12. The error-proofing fixture is convenient to install and remove. Specifically, mistake proofing frock still includes: the machine tool comprises a connecting base 7 and a connecting screw rod 9, wherein one end of the connecting screw rod 9 is connected with the screw hole 5, the other end of the connecting screw rod is connected with the connecting base 7, and the connecting base 7 is used for being connected with a machine tool. And installing the error-proofing tool and a machine tool. Preferably, the connection base 7 is a T-shaped base, suitable for a machine tool with a T-shaped recess.

The above embodiments do not limit the scope of the present utility model. It will be apparent to those skilled in the art that various modifications, combinations, sub-combinations and alternatives can occur depending upon design requirements and other factors. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included in the scope of the present utility model.

Claims

1. The utility model provides a numerical control processing mistake proofing frock which characterized in that includes:

the tool body (1) is cylindrical, two ends of the tool body are respectively connected with a first boss (11) and a second boss (12), the diameter of the first boss (11) and/or the diameter of the second boss (12) are larger than the diameter of the tool body (1), and the central axis of the first boss (11) and/or the central axis of the second boss (12) coincides with the central axis of the tool body (1);

the outer edges of the first bosses (11) and/or the second bosses (12) further comprise chamfer angles (2), and the inner edges of the first bosses (11) and/or the second bosses (12) comprise step surfaces (4);

the outer ends of the first boss (11) and/or the second boss (12) further comprise screw holes (5), and the screw holes (5) are located on the central axis of the first boss (11).

2. Tool according to claim 1, characterized in that the tool body further comprises a clamping part (10), the clamping part (10) being a groove surrounding the tool body (1).

3. Tool according to claim 1, characterized in that the screw hole (5) is a countersunk screw hole.

4. Tool according to claim 1, characterized in that the depth of the screw hole (5) does not exceed the thickness of the first boss (11) and/or the second boss (12).

5. The tooling of claim 1, further comprising:

the machine tool comprises a connecting base (7) and a connecting screw rod (9), wherein one end of the connecting screw rod (9) is connected with the screw hole (5), the other end of the connecting screw rod is connected with the connecting base (7), and the connecting base (7) is used for being connected with a machine tool.

6. Tool according to claim 5, characterized in that the connection base (7) is a T-base.