CN114801564A - Curved surface relief fixed-point positioning method - Google Patents

Abstract

The invention discloses a fixed point positioning method for curved surface relief, which comprises the steps of material selection, clamping, coarse centering, fine centering and column forming, wherein a cutter is aligned with a vertical plane where a rotation axis of a cylinder to be processed is located through two steps of coarse centering and fine centering, the contact ratio of the cutter relative to a vertical plane where the rotation axis of the cylinder is located is corrected, the cylinder with a target diameter can be conveniently processed, and meanwhile, the quality and the consistency of relief processing can be improved by ensuring the cutter centering degree.

Description

Curved surface relief fixed-point positioning method

Technical Field

The invention relates to the technical field of plane and curved surface relief processing, in particular to a fixed point positioning method for curved surface relief.

Background

The relief is a kind of carving, in which the carving person carves the figure to be shaped on a flat plate to make it depart from the plane of the original material. The relief is a product combining sculpture and painting, and the object is processed by a compression method, and the three-dimensional space is expressed by the factors of perspective and the like and is only viewed from one side or two sides.

The traditional relief sculpture is manually carved, and the problems of low efficiency and low quality exist completely depending on the experience and the technology of a carver. For the demand of high-standard and large-volume products in the modern society, the traditional embossing process can obviously not meet the demand of the modern society.

Machine tool processing relief (sculpture) is in due charge, the face of processing is milled with the removal through the feeding of the high-speed rotatory cutter to relief (sculpture) engraver, but the processing of the relief (sculpture) of plane that is used for more, to curved surface relief (sculpture), all need carve the dragon on the surface and draw the phoenix as ancient style of calligraphy building upright post usually, because the particularity of relief (sculpture) attached to the object, carry out relief (sculpture) on the cylinder surface and can not directly go on like plane relief (sculpture), the cutter is for the position of cylinder, the diameter of cylinder all can produce the influence to curved surface relief (sculpture), for example, when the cutter is poor for the cylinder centering, can't be perpendicular with the cylinder curved surface during the cutter is down cut, must influence relief (sculpture) effect.

Disclosure of Invention

The invention provides a fixed-point positioning method for curved surface relief, which has the following specific technical scheme:

1. a fixed-point positioning method for curved surface relief comprises the following steps:

s1, selecting materials, selecting a cylinder to be processed according to the diameter of the target cylinder, wherein the diameter of the cylinder to be processed is larger than that of the target cylinder;

s2, clamping, namely horizontally clamping the cylinder to be processed on the clamping jaw disc;

s3, roughly centering, starting the cutter and the clamping jaw disc, and controlling the cutter and the clamping jaw disc to move along the radial direction of the cylinder to be processed until the axis of the cutter and the rotation axis of the cylinder to be processed are close to the same plane;

s4, precisely centering, controlling the cutter to vertically feed downwards until the cutter contacts the cylinder to be processed and generates processing waste chips, stopping the vertical feed of the cutter, keeping the cutter and the clamping jaw disc rotating, controlling the cutter and the clamping jaw disc to continuously and horizontally move in opposite directions at intervals along the radial direction of the cylinder to be processed according to a preset step length, stopping the action of the cutter and the clamping jaw disc moving in opposite directions until no processing waste chips are generated at the moment when the cutter and the clamping jaw disc start moving in opposite directions, and stopping the cutter and the clamping jaw disc moving in opposite directions along the radial direction of the cylinder to be processed by the preset step length;

and S5, forming a column, controlling the cutter to vertically feed according to the diameter of the target column, and processing to obtain the target column.

Preferably, the preset step length is not less than the moving precision of the cutter or the clamping jaw disc.

The invention has the beneficial effects that: aiming at the requirement of the curved surface embossment of the cylinder, the invention provides a fixed point positioning method to correct the contact ratio of the cutter relative to the vertical surface of the rotation axis of the cylinder based on the technical basis of automatic processing, which not only facilitates the processing of the cylinder with the target diameter, but also improves the quality and consistency of the embossment processing by ensuring the cutter to be in the middle.

Drawings

FIG. 1 is a state of the tool after rough centering is performed;

FIG. 2 is a state of readiness for performing a fine centering;

FIG. 3 is a state one in which fine centering is performed;

FIG. 4 is state two when fine centering is performed;

fig. 5 shows state three in which fine centering is performed.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the embodiments.

Examples

A fixed-point positioning method for curved surface relief comprises the following steps:

s1, selecting materials, selecting a cylinder to be processed according to the diameter of the target cylinder, wherein the diameter of the cylinder to be processed is larger than that of the target cylinder; for example, the diameter of the target column is 30cm, the column to be processed with a diameter exceeding 30cm needs to be selected, and may be 35cm or 40cm, for example.

S2, clamping, namely horizontally clamping the cylinder to be processed on the clamping jaw disc; it should be noted that, in this embodiment, the device for curved surface relief includes a cutter with two degrees of freedom and a clamping jaw disk with two degrees of freedom, where the cutter may move in a vertical direction and move in a horizontal direction, the left and right movement is the same as an axial direction of a cylinder to be processed after being clamped, the clamping jaw disk may move in a horizontal direction back and forth, the back and forth movement is perpendicular to the axial direction of the cylinder after being clamped, and the clamping jaw disk may also rotate to drive the cylinder to rotate.

S3 roughly centering, starting the cutter and the clamping jaw disc, and controlling the cutter and the clamping jaw disc to move along the radial direction of the cylinder to be processed until the axis of the cutter is close to the same plane with the rotation axis of the cylinder to be processed, as shown in figure 1, the fact that the axis of the cutter is close to the same plane with the rotation axis of the cylinder to be processed only needs to be judged by naked eyes and experience, and the accuracy is not needed, and the time consumption of the step of S4 precise centering is mainly reduced.

S4 fine centering, as shown in fig. 2 and 3, respectively, in the initial state and the state one of performing the fine centering, controlling the tool to vertically feed downward until the tool contacts the cylinder to be processed and generates processing waste, and stopping the vertical feeding of the tool, at this time, since the tool processing has contacted the cylinder to be processed, forming a dotted line body in fig. 3; keeping the cutter and the clamping jaw disc rotating, controlling the cutter and the clamping jaw disc to continuously and horizontally move in opposite directions at intervals along the radial direction of the cylinder to be processed according to a preset step length, stopping the action of the cutter and the clamping jaw disc moving in opposite directions until no processing waste chips are generated at the moment when the cutter and the clamping jaw disc start to move in opposite directions, and controlling the cutter and the clamping jaw disc to move reversely along the radial direction of the cylinder to be processed by the preset step length and then stop; as shown in fig. 4 and 5, a second state and a third state are respectively set in the fixed-point positioning process of the tool, wherein the second state is that the tool is coplanar with the axis of the cylinder to be processed, that is, the tool has completed centering positioning, and the third state is that the tool further moves by a preset step length on the basis of the second state.

And S5, forming a column, controlling the vertical feeding of a cutter according to the diameter of the target column, and processing to obtain the target column.

In this embodiment, the relative movement between the cutter and the clamping jaw disc may be set by the structure of the device for fixing the cutter and the clamping jaw disc, or moving the cutter and the clamping jaw disc, the machining precision of the cutter is 0.005mm, and the corresponding preset step length may also be set to 0.005 mm.

As another example, it is preferable to use a step-wise preset step size, that is, the smaller the value of the preset step size, the closer to the processing precision. For example, after coarse centering is achieved, it can be ensured that the axis of the tool and the rotation axis of the cylinder to be machined are close to the same plane, at this time, in the step of fine centering, different preset step lengths are set, for example, four gradually decreasing step lengths of 1mm, 0.1mm, 0.01mm and 0.005mm, 1mm is set as a preset step length value at the beginning, step S4 is performed until no machining waste chips are generated at the moment when the tool and the clamping jaw disk start to move in the opposite direction, the motion of the tool and the clamping jaw disk in the opposite direction is stopped, 0.1mm is set as a preset step length value again, and the above steps are repeated until different preset step lengths are circularly performed.

Obviously, different preset step lengths are set for cyclic execution, so that the frequency of relative movement of the cutter and the clamping jaw disc can be greatly reduced, and the efficiency of fixed-point positioning is improved.

The above examples are only for illustrating the technical solutions of the present invention, and are not limited thereto.

Claims (2)

1. A fixed-point positioning method for curved surface relief is characterized by comprising the following steps:

s1, selecting materials, selecting a cylinder to be processed according to the diameter of the target cylinder, wherein the diameter of the cylinder to be processed is larger than that of the target cylinder;

s2, clamping, namely horizontally clamping the cylinder to be processed on the clamping jaw disc;

s3, roughly centering, starting the cutter and the clamping jaw disc, and controlling the cutter and the clamping jaw disc to move along the radial direction of the cylinder to be processed until the axis of the cutter and the rotation axis of the cylinder to be processed are close to the same plane;

s4, precisely centering, controlling the cutter to vertically feed downwards until the cutter contacts the cylinder to be processed and generates processing waste chips, stopping the vertical feed of the cutter, keeping the cutter and the clamping jaw disc rotating, controlling the cutter and the clamping jaw disc to continuously and horizontally move in opposite directions at intervals along the radial direction of the cylinder to be processed according to a preset step length, stopping the action of the cutter and the clamping jaw disc moving in opposite directions until no processing waste chips are generated at the moment when the cutter and the clamping jaw disc start moving in opposite directions, and stopping the cutter and the clamping jaw disc moving in opposite directions along the radial direction of the cylinder to be processed by the preset step length;

and S5, forming a column, controlling the cutter to vertically feed according to the diameter of the target column, and processing to obtain the target column.

2. The method of claim 1, wherein the preset step length is not less than the precision of the movement of the cutter or the gripper disc.

Images