CN102148024B - Manufacturing process of Erhu cylinder - Google Patents

Abstract

The invention relates to a manufacturing process of an Erhu cylinder, which comprises the steps of preparing materials: selecting the whole piece of wood; marking: firstly making a foundation, marking a hexagon and a center line on the big head end, and then crossing to the small head end for marking a hexagon with coaxial two ends and parallel edges; cutting the shape: cutting off the outer six edges after marking the hexagonal frustum lines of the cylinder, and simultaneously drilling and punching the hexagon to a semi rough finished product; rough and fine planing the shape: rough and fine planing the outer hexagonal edges and milling, shoveling and filing the inner hexagonal edges and machining the whole cylinder to a semi fine finished product in a hexagonal frustum in the inner chamber; finishing: milling, filing, digging, punching and polishing two ends to be big and small inner-sucking inner semicircular arcs; grinding: milling the outer waist arc of the cylinder, grinding the outer opening of the big head, the outer six surfaces of the cylinder, the waist arc and the six edges; and stringing: flattening the arc and trimming the three strings to complete the manufacture of the cylinder. In the invention, the problems of tone quality, resonance and impure pitch and bass areas of the traditional spliced Erhu cylinder are solved and the cylinder has the characteristics of natural tone, tone quality and resonance and attractive appearance, and is processed delicately.

Description

A kind of two-stringed piano drum manufacture craft

Technical field

The present invention relates to a kind of two-stringed piano drum manufacture craft.

Background technology

Traditional two-stringed piano drum, it is made and mostly to be that the timber assembly processes six terrace with edge shapes, and one is big hexagon, and one is little hexagon, and its weak point of depositing is that produced qin tube exists tonequality, sympathetic response, the impure defective of high-low sound area.

Summary of the invention

Its purpose of the present invention just is to provide a kind of two-stringed piano drum manufacture craft, has tone color, tonequality, the natural characteristics that form of sympathetic response, and processing is exquisite, attractive in appearance.

Realize above-mentioned purpose and color technical scheme of getting, may further comprise the steps:

1) gets the raw materials ready: select monoblock timber for use;

2) line: perform foundation stone earlier, with hexagon and center lines such as end major part pictures, cross line then and draw equilateral hexagon in other end microcephaly, require the two ends major part coaxial, each limit correspondence is parallel;

3) cut the saw profile: saw outer hexagon down after having drawn qin tube six terrace with edge lines, simultaneously with boring, cut a hole interior hexagon to half thick finished product;

4) thick, adjustable cast iron planes profile: outer six seamed edges of thick, adjustable cast iron planes, mill, six seamed edges in the shovel, file finishing, whole tube is processed into inner room six terrace with edges half smart finished product;

5) arrangement: mill, make smooth with a file, dig, cutter, large and small the internal orifice in light qin tube two ends and in semi arch;

6) polishing: mill the outer oval arc of qin tube, grinding major part lateral port place, outer six of polishing qin tube, oval arc, six ribs;

7) draw three-way: smooth circular arc is also repaired three-way completion qin tube and is made.

Compared with prior art, beneficial effect of the present invention is,

Owing to has adopted empty hexagonal manufacture craft in the monoblock timber, thereby had tone color, tonequality, the natural characteristics that form of sympathetic response, and processing is exquisite, good looking appearance.

Embodiment

May further comprise the steps,

1) gets the raw materials ready: select monoblock timber for use;

2) line: perform foundation stone earlier, with hexagon and center lines such as end major part pictures, cross line then and draw equilateral hexagon in other end microcephaly, require the two ends major part coaxial, each limit correspondence is parallel;

3) cut the saw profile: saw outer hexagon down after having drawn qin tube six terrace with edge lines, simultaneously with boring, cut a hole interior hexagon to half thick finished product;

4) thick, adjustable cast iron planes profile: outer six seamed edges of thick, adjustable cast iron planes, mill, six seamed edges in the shovel, file finishing, whole tube is processed into inner room six terrace with edges half smart finished product;

5) arrangement: mill, make smooth with a file, dig, cutter, large and small the internal orifice in light qin tube two ends and in semi arch;

6) polishing: mill the outer oval arc of qin tube, grinding major part lateral port place, outer six of polishing qin tube, oval arc, six ribs;

7) draw three-way: smooth circular arc is also repaired three-way completion qin tube and is made.

Adopt monoblock timber; Wood fibre density; Annual ring, ripple, mechanism are consistent naturally; Manually chisel and carve meticulously, making each item index such as tone color, tonequality, sympathetic response of qin tube all is natural forming, breakthrough improvement traditional urheen technology impure defective of tonequality, sympathetic response, high-low sound area of piecing together the qin tube mutually.

Claims (1)

1. a two-stringed piano drum manufacture craft is characterized in that, may further comprise the steps:

1) gets the raw materials ready: select monoblock timber for use;

2) line: perform foundation stone earlier, with hexagon and center lines such as end major part pictures, cross line then and draw equilateral hexagon in other end microcephaly, require two ends coaxial, each limit correspondence is parallel;

3) cut the saw profile: saw outer hexagon down after having drawn qin tube six terrace with edge lines, simultaneously with boring, cut a hole interior hexagon to half thick finished product;

4) thick, adjustable cast iron planes profile: outer six seamed edges of thick, adjustable cast iron planes, mill, six seamed edges in the shovel, file finishing, whole tube is processed into inner room six terrace with edges half smart finished product;

5) arrangement: mill, make smooth with a file, dig, cutter, large and small the internal orifice in light qin tube two ends and in semi arch;

6) polishing: mill the outer oval arc of qin tube, grinding major part lateral port place, outer six of polishing qin tube, oval arc, six ribs;

7) draw three-way: smooth circular arc is also repaired three-way completion qin tube and is made.