CN109559715B

CN109559715B - Manufacturing method of wooden drum

Info

Publication number: CN109559715B
Application number: CN201811518209.1A
Authority: CN
Inventors: 梁耀京
Original assignee: Mashan County Shancheng Zhuanggu Association
Current assignee: Mashan County Shancheng Zhuanggu Association
Priority date: 2018-12-12
Filing date: 2018-12-12
Publication date: 2020-11-20
Anticipated expiration: 2038-12-12
Also published as: CN109559715A

Abstract

The invention discloses a method for manufacturing a wooden drum, which comprises the following steps: step one, soaking peach wood and redwood, and airing; burning to obtain a core material; soaking the core material, drying, and sawing into a peach wood board and a red vertebral plate; soaking the peach wood plate and the red vertebral plate, and then naturally drying, wherein the peach wood plate is used as a main plate, and the red vertebral plate is used as an auxiliary plate; thirdly, splicing the main plate block and the auxiliary plate block into a drum body, and wrapping cloth outside the drum body; fourthly, covering a metal layer on the inner wall of the drum body; fifthly, soaking the cattle hide to obtain the oxhide without blood; sixthly, drying the bloodless cowhide in air to obtain semi-dry cowhide; seventhly, drying the semi-dried cowhide to obtain dried cowhide; eighthly, standing the dried cowhide to obtain drum skin; ninth, a vibration increasing device is arranged in the drum body; tenthly, expanding the drum skin by using a hoop to form a drum surface; eleven, sleeving the hoop into two ends of the drum body to obtain the strong drum. In the manufacturing method of the wooden drum, the metal layer is attached to the inner wall of the drum cavity, so that the drum cavity has good reverberation effect, high resonance strength and enough sound.

Description

Manufacturing method of wooden drum

Technical Field

The invention relates to the technical field of musical instruments, in particular to a manufacturing method of a wooden drum.

Background

The wooden drum has a long history, and is quite loud in sound and great in vigor, and is commonly used in grand and cultural performance on the scene or in a great sport meeting.

According to the traditional drum manufacturing method, harder wood is sawed into plates, the plates are polished and bright and then spliced to form a drum body, and after being dried by cow leather, the plates are sleeved on two ends of the drum body and tensioned to form drum leather. The drum thus produced has several problems: firstly, the vibration damping capacity of wood is strong, the drum cavity made of pure wood has poor reverberation effect and is louder in sound, although the sound is thick enough, the loudness is not enough, and the drum sound penetrability is not enough; secondly, compared with metal, the wood has lower density and insufficiently tight molecular arrangement, and even after being polished for many times, the surface of the wood still has more pits and pores which accelerate the attenuation of sound and influence resonance; in addition, the naturally air-dried cowhide has the problems of large thickness, heavy drum sound, poor toughness and easy cracking.

In addition, the drum body of the wooden drum is easy to collide in the carrying process to cause drum body depression and even damage the influence of the drum body, and the structural design of the existing wooden drum is insufficient for protecting the drum body.

Therefore, it is desirable to design a method for manufacturing a wooden drum that can solve the above problems.

Disclosure of Invention

It is an object of the present invention to address at least the above-mentioned deficiencies and to provide at least the advantages which will be described hereinafter.

Another object of the present invention is to provide a method of manufacturing a wooden drum capable of protecting a drum shell.

To achieve these objects and other advantages in accordance with the purpose of the invention, the present invention provides a method for manufacturing a wooden drum, comprising the steps of:

firstly, peach wood and redwood are placed in lime water to be soaked for 1-2 days and then taken out to be dried in the sun, so that parasites on the surfaces of the wood can be effectively removed, and rotting of parts of materials which are not tough enough is accelerated so as to be removed conveniently; placing the dried peach wood and the rose cone wood in water for soaking for 5-6 months, taking out and drying in the air, releasing the internal stress of the soaked wood, and reducing the cracking phenomenon; burning the peach wood and the redcone which are dried again to form a 1-2 cm carbonized layer on the surface of the wood, removing the carbonized layer to obtain a core material, obtaining the wood with poor surface quality, simultaneously, forming an oxide layer on the surface of the wood through the burning treatment to reduce insect damage, enabling the wood after burning to be harder and more crisp, and enabling the prepared drum cavity to have better echo effect; cutting the core material into plates, then soaking the plates in resin for 15-20 days, and drying to obtain dry peach wood and dry russet vertebra wood, wherein the resin can effectively improve the corrosion resistance of the wood, the dry peach wood is sawn into a peach wood plate with a certain specification, and the dry russet vertebra wood is sawn into a red vertebral plate with a certain specification.

Step two, mixing silicon dioxide particles with the particle size of 10-50 microns and wood wax oil according to the mass ratio of 1:10 to obtain an immersion liquid, placing the peach wood board and the red vertebral plate in the immersion liquid for soaking for 25-30 days, taking out the peach wood board and the red vertebral plate, and naturally drying the peach wood board and the red vertebral plate, wherein the peach wood board is used as a main plate, and the red vertebral plate is used as an auxiliary plate; oil in the wood wax oil can penetrate into the wood to provide deep moistening and maintenance for the wood; the wax can be tightly combined with wood fibers, the surface hardness is enhanced, and the wood is waterproof, antifouling, wear-resistant and scratch-resistant, so that the gold combination provides the most excellent maintenance and decoration effects for the wood; meanwhile, the macropores of the wood are generally about 50 microns, the macropores play a great role in attenuating sound, in order to fill the macropores, the invention uses 10-50 micron silicon dioxide particles, the particles penetrate into the wood along with the wood wax oil, and the macropores of the wood are filled, so that the surface of the wood is smoother, and the prepared drum chamber reverberation effect is better.

Thirdly, combining and splicing three main plates and a plurality of auxiliary plates to form a drum body with a cylindrical structure, wherein the auxiliary plates with the same number are arranged between the main plates, a layer of cloth is wrapped outside the drum body, the thickness of the cloth is 0.5-1 cm, then the drum body is hooped by an outer ring, and the drum body is supported by an inner ring; the structural strength of the drum body can be effectively improved by the inner ring and the outer ring. The cloth can reduce the injury of outside collision to the drum body on the one hand, and the cloth can increase the friction between outer ring and the outside of drum body simultaneously, makes the outer ring be difficult to take place the offset, avoids the outer ring to hoop the drum body simultaneously and hinders.

Step four, set up the piece of affiliated to on the outer ring, the piece of affiliated to includes: the first snare is hinged to the outer side of the outer ring, the second snare is fixed to the outer side of the outer ring, and the pocket is arranged under the second snare; the traditional drum is not provided with a component for hanging and accommodating the knocking stick, so that the knocking stick needs to be carried additionally, and the carrying is inconvenient; meanwhile, the hanging piece can stably contain the knocking stick due to the structural design, the knocking stick is prevented from falling out, the hanging piece is simple in structure, and the vibration of the drum body during knocking cannot be influenced, so that the sound of the wooden drum cannot be influenced; covering a metal layer on the inner wall of the drum body, wherein the area of the metal layer accounts for one half or more than one half of the area of the inner wall of the drum body; compared with wood, the metal material has higher surface smoothness after being polished smoothly, and has better sound feedback effect, so that the echo in the drum cavity is stronger, the drum sound is also larger and thicker, and the problems that the drum body of the traditional wooden drum is too clumsy and is not loud enough are solved.

Step five, adding 20-30 ml of acetic acid into each liter of water, uniformly mixing to obtain an acetic acid solution, heating the acetic acid solution to 45-50 ℃, then soaking the cowhide for 1-2 hours, cooling the acetic acid solution to 5-8 ℃, and continuously soaking for 1-2 days to obtain the bloodless cowhide; more blood water is adhered to the surface of the cowhide, the color of the drum skin is influenced after the blood water is solidified, insect damage is easily caused, and the quality guarantee of the drum skin is influenced, so that the blood water can be removed by soaking the cowhide in warm water, and part of grease can be removed; the acetic acid has the function of softening the cow leather, so that the cow leather has better toughness.

Step six, hanging and air-drying the obtained buffalo hide, performing gravity stretching in the air-drying process until the water content is 45-50%, and then stripping off fat blocks on the surface of the buffalo hide to obtain semi-dry buffalo hide; excess grease tends to affect the quality of the drum skin and is also subject to insect infestation and must be removed.

Step seven, drying the obtained semi-dried cowhide at the temperature of 50-55 ℃, and mechanically stretching the semi-dried cowhide at the same time of drying, wherein the drying time is 1-2 days to obtain the dried cowhide; under this temperature environment, the softening degree of cow hide is good, and surface molecule activity is high, remains simultaneously and begins to melt at the fat on cow hide surface, continues to stretch again this moment and can make the cow hide thinner and thinner, and elasticity is better and better, and the drum body that the vibration produced is more luminous, and the fat that melts simultaneously can be tensile start-up lubrication action, avoids mechanical damage.

Step eight, standing the obtained dried cowhide in a ventilated environment for more than half a month to obtain a drum skin; and standing and shaping the stretched cowhide.

Step nine, arranging a vibration increasing device on the inner wall of the drum body, wherein the vibration increasing device comprises at least four springs, a disc and a metal sheet, the first ends of the springs are buckled on the inner ring, the second ends of the springs are buckled on the disc, the disc is dragged from the periphery by the springs to be suspended, the first ends of the metal sheet are fixed on the disc, the second ends of the metal sheet extend outwards, the length of the metal sheet is half of that of the springs, the thickness of the disc is not more than 1 cm, and the thickness of the metal sheet is not more than 0.5 cm; through increasing vibrating device for strong drum is at the in-process of strikeing, and the vibrating device of drum intracavity forms resonance, and the amplitude is bigger, and the sound that the vibration produced is also deep and muddy, makes strong drum sound potential stronger, and sound passes farther. The vibration increasing device comprises a spring and a metal sheet, the spring and the metal sheet are respectively connected with the disc, in the knocking process, the spring and the elastic sheet strip vibrate together, the amplitude is larger than that of the metal sheet which is arranged purely, and therefore the generated sound is thicker than that of the metal sheet which is arranged purely in the drum cavity. In addition, the vibration increasing device can also adjust the vibration sound of the drum head, so that the excessively sharp drum sound is avoided.

And step ten, expanding the drum head to form a drumhead by using a hoop, fixing the hoop and the drum head mutually, and setting the size of the hoop to be just capable of being sleeved at two ends of the drum body.

Step eleven, sleeving the hoops at the two ends of the drum body, connecting the hoops at the two ends of the drum body through the screw rods, and adjusting the distance between the two hoops through the screw rods to enable the drum skin to be tightly covered at the two ends of the drum body, so that the drum is obtained.

Preferably, in the method for manufacturing a wooden drum, the resin in the first step is an epoxy resin. Has better corrosion resistance.

Preferably, in the method for manufacturing the wood drum, the thickness of the peach wood board is 5 cm, and the width of the peach wood board is 8 cm; the thickness of the red vertebral plate is 3 cm, and the width of the red vertebral plate is 8 cm. The peach wood board serving as the main board can structurally enhance the structural strength and stability of the drum body; meanwhile, the sound beam has the function of bearing the sound beam, has the function of adjusting the sound, keeps the sound balance and conduction, and enables the muddy sound to be more easily transmitted.

Preferably, in the manufacturing method of the wooden drum, the outer rings are provided with 3, and the 3 outer rings are arranged at equal intervals; the inner ring is provided with 3, and 3 inner rings equidistance settings, just outer ring and inner ring are corresponding.

Preferably, in the method for manufacturing a wooden drum, the metal layer is a copper foil or an iron sheet.

Preferably, in the method for manufacturing the wooden drum, the copper foil or the iron sheet has the same width as that of the sub-board blocks, and one copper foil or one iron sheet is attached to every other sub-board block.

Preferably, in the method of manufacturing a wooden drum, the inner wall of the drum body is divided into three annular regions having equal areas, and the metal layer is attached to the upper, middle and lower annular regions.

Preferably, in the method for manufacturing a wooden drum, in the sixth step, the buffy coat is stretched using a weight block of 20kg or more.

Preferably, in the method for manufacturing a wooden drum, the semi-dried cowhide is mechanically stretched by using a stretching device in the seventh step; the stretching device includes: an eccentric drum which is driven by a motor to eccentrically rotate; the surface of the driven roller is provided with a plurality of spherical bulges, and the driven roller is parallel to the eccentric roller; the distance adjusting guide rail is arranged between the eccentric roller and the driven roller, a base is arranged on the distance adjusting guide rail in a matched mode, the driven roller is erected on the base, and the base moves along the distance adjusting track to adjust the distance between the driven roller and the eccentric roller; the heating module comprises heating wires, a power supply and a temperature control switch which are connected in series to form a loop, the heating wires are distributed on the inner wall of the driven roller and used for heating the driven roller, the temperature control switch is arranged in the driven roller and configured to be an open circuit at the temperature of more than 55 ℃ and a closed circuit at the temperature of less than 55 ℃. During the use, connect the cow hide and form the annular structure like the belt, then the cover is between eccentric cylinder and driven cylinder, adjusts the base and makes the cow hide by driven cylinder tensioning, then starter motor drives eccentric cylinder and rotates and carry out mechanical stretching to the cow hide, and eccentric cylinder can carry out a strong weak stretching that has rhythm to the cow hide for the cow hide obtains fully dragging, and elasticity and toughness become better. Set up the temperature that heating module can improve the cylinder surface for tensile in-process can heat the cow hide, can improve the toughness of cow hide on the one hand, avoids being broken, and such temperature of on the other hand can make the fat on cow hide surface melt and form emollient, avoids cylinder surface scratch cow hide.

The invention at least comprises the following beneficial effects:

the manufacturing method of the wooden drum enables the drum body to reduce cracking, meanwhile, the drum cavity of the inner wall of the drum body has better echo effect and brighter sound, and solves the problems that the drum body of the traditional wooden drum is easy to crack, the drum sound is too loud, the loudness is insufficient, and the penetrating power is poor.

According to the manufacturing method of the wooden drum, the metal layer is attached to the inner wall of the drum cavity, so that the drum cavity is good in reverberation effect, high in resonance intensity and loud enough in sound, and the problems that wood is used as a drum body in a traditional drum is large in surface depression and fast in sound attenuation are solved.

According to the manufacturing method of the wooden drum, the stretching device is designed to stretch the cowhide, the stretched cowhide has better elasticity, higher toughness, strong vibration and sound, cracking is reduced, and the problems of heaviness of the drum body, poor toughness and easy cracking of drum skin of the traditional natural air-dried cowhide are solved.

Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.

Drawings

FIG. 1 is a schematic structural diagram of a vibration increasing device according to the present invention;

FIG. 2 is a schematic structural view of a stretching apparatus according to the present invention;

fig. 3 is a schematic structural view of the attachment member of the present invention.

Detailed Description

The present invention is further described in detail below with reference to the attached drawings so that those skilled in the art can implement the invention by referring to the description text.

As shown in fig. 1, the vibration increasing device 2 is disposed inside the shell 1, an inner ring is disposed on the inner wall of the shell 1 to support the shell, and the vibration increasing device 2 includes: spring 3, disc 4 and sheetmetal 5, on the inner ring of spring 3's first end lock joint, second end lock joint is on disc 4, spring 3 drags disc 4 from a plurality of directions and makes disc 4 unsettled, sheetmetal 5's first end is fixed on disc 4, the outside extension of second end, sheetmetal 5's length is half of 3 lengths of spring, disc 4's thickness is no longer than 1 centimetre, sheetmetal 5's thickness is no longer than 0.5 centimetre, so that the vibration takes place more easily.

As shown in fig. 2, the stretching apparatus includes: an eccentric drum 6 which is driven by a motor to eccentrically rotate; a driven roller 7, the surface of which is provided with a plurality of spherical bulges, wherein the driven roller 7 is parallel to the eccentric roller 6; the distance adjusting guide rail 9 is arranged between the eccentric roller 6 and the driven roller 7, a base 8 is arranged on the distance adjusting guide rail 9 in a matching mode, a groove is formed in the base 8, the groove clamps the distance adjusting guide rail 9 to form matching, a tightening screw is arranged on the base, the tightening screw can be used for propping against the distance adjusting guide rail when being tightened to enable the base and the distance adjusting guide rail to be relatively fixed, the tightening screw can enable the base to slide relative to the distance adjusting guide rail after being loosened, the driven roller 7 is erected on the base 8, and the base 8 moves along the distance adjusting rail 9 to adjust the distance between the driven roller 7 and the eccentric roller 6; the heating module is arranged in the driven roller 7 and comprises heating wires, a power supply and a temperature control switch which are connected in series to form a loop, the heating wires are distributed on the inner wall of the driven roller 7 and used for heating the driven roller, and the temperature control switch is arranged in the driven roller 7 and configured to be an open circuit at a temperature of more than 55 ℃ and a closed circuit at a temperature of less than 55 ℃. When the device is used, the cow leather 10 is connected into a ring shape, then sleeved on the eccentric roller and the driven roller, tensioned by adjusting the base, and then stretched by starting the motor.

As shown in fig. 3, the attaching member includes: the knocking device comprises a first snare 12 hinged to the outer side of the outer ring 11, a second snare 13 fixed to the outer side of the outer ring 11, and a pocket 14 arranged under the second snare 13, wherein the second snare 13 is coaxially arranged under the first snare 12 in parallel and is as large as the first snare 12, a pocket opening of the pocket 14 is sleeved under the second snare 13 and is as large as the second snare 13, and spaces for containing knocking sticks 15 are formed inside the first snare 12, the second snare 13 and the pocket 14.

Example 1

A method of manufacturing a wooden drum, comprising the steps of:

firstly, placing peach trees and redwood into lime water for soaking for 1-2 days, and then taking out and drying in the sun; soaking the sun-dried peach wood and redwood in water for 5 months, taking out and drying in the air; burning the aired peach wood and the redcone to form a 1 cm carbonized layer on the surface of the wood, and removing the carbonized layer to obtain a core material; cutting the core material into plates, then placing the plates in resin to soak for 15 days, drying the plates to obtain dry peach wood and dry russet vertebra wood, sawing the dry peach wood into peach wood plates with the length of 1.5 m, the width of 8 cm and the thickness of 5 cm, and sawing the dry russet vertebra wood into red vertebral plates with the length of 1.5 m, the width of 8 cm and the thickness of 3 cm.

And step two, mixing silicon dioxide particles with the particle size of 50 microns and wood wax oil according to the mass ratio of 1:10 to obtain an immersion liquid, placing the peach wood board and the red vertebral plate in the immersion liquid, immersing for 30 days, taking out and naturally drying, and using the peach wood board as a main plate and the red vertebral plate as an auxiliary plate.

And thirdly, combining and splicing three main plates and 33 auxiliary plates to form a drum body with a cylindrical structure, wherein the auxiliary plates with the same number are arranged between the main plates, a layer of cloth is wrapped outside the drum body, the thickness of the cloth is 0.5 cm, then the drum body is hooped by an outer ring, and the drum body is supported by an inner ring.

Step four, set up the piece of affiliated to on the outer ring, the piece of affiliated to includes: the first snare is hinged to the outer side of the outer ring, the second snare is fixed to the outer side of the outer ring, and the pocket is arranged under the second snare; and covering the inner wall of the drum body with a copper foil, wherein the area of the copper foil accounts for one half of the area of the inner wall of the drum body.

And step five, adding 20 milliliters of acetic acid into each liter of water, uniformly mixing to obtain an acetic acid solution, heating the acetic acid solution to 45 ℃, then soaking the cowhide for 2 hours, cooling the acetic acid solution to 8 ℃, and continuously soaking for 2 days to obtain the cowhide without blood.

And step six, hanging and air-drying the obtained buffalo hide, stretching the buffalo hide by 20kg of gravity in the air-drying process until the water content is 50%, and then stripping off fat blocks on the surface of the buffalo hide to obtain the semi-dry buffalo hide.

And seventhly, drying the obtained semi-dried cowhide at the temperature of 50 ℃, and mechanically stretching the semi-dried cowhide at the same time of drying, wherein the drying time is 2 days to obtain the dried cowhide.

And step eight, standing the obtained dried cowhide in a ventilated environment for half a month to obtain the drum skin.

And step nine, arranging a vibration increasing device on the inner wall of the drum body, wherein the vibration increasing device is as described above.

Example 2

A method of manufacturing a wooden drum, comprising the steps of:

firstly, placing peach trees and redwood into lime water for soaking for 2 days, and then taking out and drying in the sun; soaking the sun-dried peach wood and redwood in water for 6 months, taking out and drying in the air; burning the aired peach wood and the redcone to form a 2 cm carbonized layer on the surface of the wood, and removing the carbonized layer to obtain a core material; cutting the core material into plates, then placing the plates in epoxy resin for soaking for 20 days, and drying to obtain dry peach wood and dry russet vertebra wood, wherein the peach wood plate is 5 cm in thickness and 8 cm in width; the thickness of the red vertebral plate is 3 cm, the width is 8 cm, and the length is 1.2 m.

And step two, mixing silicon dioxide particles with the particle size of 0 micron with wood wax oil according to a mass ratio of 1:10 to obtain an immersion liquid, placing the peach wood board and the red vertebral plate in the immersion liquid, immersing for 30 days, taking out and naturally drying, wherein the peach wood board is used as a main plate, and the red vertebral plate is used as an auxiliary plate.

Thirdly, combining and splicing three main plates and 33 auxiliary plates to form a drum body with a cylindrical structure, wherein the auxiliary plates with the same number are arranged between the main plates, a layer of cloth is wrapped outside the drum body, the thickness of the cloth is 1 cm, the drum body is hooped by an outer ring, and the drum body is supported by an inner ring; 3 outer rings are arranged, and the 3 outer rings are arranged at equal intervals; the inner ring is provided with 3, and 3 inner rings equidistance settings, just outer ring and inner ring are corresponding.

Step four, set up the piece of affiliated to on the outer ring, the piece of affiliated to includes: the first snare is hinged to the outer side of the outer ring, the second snare is fixed to the outer side of the outer ring, and the pocket is arranged under the second snare; the inner wall of the drum body is divided into an upper section, a middle section and a lower section of annular regions with equal area, and iron sheets are covered on the upper section and the lower section of annular regions.

And step five, adding 30 milliliters of acetic acid into each liter of water, mixing uniformly to obtain an acetic acid solution, heating the acetic acid solution to 50 ℃, then soaking the cowhide for 2 hours, cooling the acetic acid solution to 8 ℃, and continuing to soak for 2 days to obtain the cowhide without blood.

And step six, hanging and air-drying the obtained buffalo hide, stretching by 20kg of gravity in the air-drying process until the water content is 50%, and then stripping off fat blocks on the surface of the buffalo hide to obtain the semi-dry buffalo hide.

And step seven, drying the obtained semi-dried cowhide at the temperature of 55 ℃, and simultaneously mechanically stretching the semi-dried cowhide by using a stretching device for 2 days to obtain the dried cowhide, wherein the stretching device is as described above.

While embodiments of the invention have been disclosed above, it is not intended to be limited to the uses set forth in the specification and examples. It can be applied to all kinds of fields suitable for the present invention. Additional modifications will readily occur to those skilled in the art.

Claims

1. A method of manufacturing a wooden drum, comprising the steps of:

firstly, placing peach trees and redwood into lime water for soaking for 1-2 days, and then taking out and drying in the sun; soaking the sun-dried peach wood and redwood in water for 5-6 months, taking out and drying in the air; burning the aired peach wood and the redcone to form a 1-2 cm carbonized layer on the surface of the wood, and removing the carbonized layer to obtain a core material; cutting the core material into plates, then placing the plates in resin for soaking for 15-20 days, drying to obtain dry peach wood and dry russet vertebra wood, sawing the dry peach wood into a peach wood plate with a certain specification, and sawing the dry russet vertebra wood into a red vertebral plate with a certain specification;

step two, mixing silicon dioxide particles with the particle size of 10-50 microns and wood wax oil according to the mass ratio of 1:10 to obtain an immersion liquid, placing the peach wood board and the red vertebral plate in the immersion liquid for soaking for 25-30 days, taking out the peach wood board and the red vertebral plate, and naturally drying the peach wood board and the red vertebral plate, wherein the peach wood board is used as a main plate, and the red vertebral plate is used as an auxiliary plate;

thirdly, combining and splicing three main plates and a plurality of auxiliary plates to form a drum body with a cylindrical structure, wherein the auxiliary plates with the same number are arranged between the main plates, a layer of cloth is wrapped outside the drum body, the thickness of the cloth is 0.5-1 cm, then the drum body is hooped by an outer ring, and the drum body is supported by an inner ring;

step four, set up the piece of affiliated to on the outer ring, the piece of affiliated to includes: the first snare is hinged to the outer side of the outer ring, the second snare is fixed to the outer side of the outer ring, and the pocket is arranged under the second snare; covering a metal layer on the inner wall of the drum body, wherein the area of the metal layer accounts for one half or more than one half of the area of the inner wall of the drum body;

step five, adding 20-30 ml of acetic acid into each liter of water, uniformly mixing to obtain an acetic acid solution, heating the acetic acid solution to 45-50 ℃, then soaking the cowhide for 1-2 hours, cooling the acetic acid solution to 5-8 ℃, and continuously soaking for 1-2 days to obtain the bloodless cowhide;

step six, hanging and air-drying the obtained buffalo hide, performing gravity stretching in the air-drying process until the water content is 45-50%, and then stripping off fat blocks on the surface of the buffalo hide to obtain semi-dry buffalo hide;

step seven, drying the obtained semi-dried cowhide at the temperature of 50-55 ℃ to obtain dried cowhide, and mechanically stretching the dried cowhide at the same time of drying for 1-2 days;

step eight, standing the obtained dried cowhide in a ventilated environment for more than half a month to obtain a drum skin;

step nine, arranging a vibration increasing device on the inner wall of the drum body, wherein the vibration increasing device comprises at least four springs, a disc and a metal sheet, the first ends of the springs are buckled on the inner ring, the second ends of the springs are buckled on the disc, the disc is dragged from the periphery by the springs to be suspended, the first ends of the metal sheet are fixed on the disc, the second ends of the metal sheet extend outwards, the length of the metal sheet is half of that of the springs, the thickness of the disc is not more than 1 cm, and the thickness of the metal sheet is not more than 0.5 cm;

step ten, the drum head is stretched to form a drum surface by using a hoop, the hoop and the drum head are mutually fixed, and the size of the hoop is set to be just capable of being sleeved into two ends of a drum body;

step eleven, sleeving the hoop rings into two ends of the drum body, connecting the hoop rings at the two ends of the drum body through screws, and adjusting the distance between the two hoop rings through the screws so as to enable the drum skin to be tightly covered at the two ends of the drum body, thus obtaining the wooden drum.

2. The method of manufacturing a wood drum according to claim 1, wherein the resin in the first step is an epoxy resin.

3. The method of manufacturing a wood drum according to claim 1, wherein the mahogany board has a thickness of 5 cm and a width of 8 cm; the thickness of the red vertebral plate is 3 cm, and the width of the red vertebral plate is 8 cm.

4. A wooden drum manufacturing method according to claim 1, wherein the outer rings are provided in 3, 3 being equidistantly provided; the inner ring is provided with 3, and 3 inner rings equidistance settings, just outer ring and inner ring are corresponding.

5. The method of claim 1, wherein the metal layer is made of copper foil or iron sheet.

6. The method of manufacturing a wooden drum as claimed in claim 5, wherein the copper foil or iron sheet is provided with the same width as the sub-blocks, and the copper foil or iron sheet is attached every other sub-block.

7. The method of manufacturing a wooden drum as claimed in claim 1, wherein the inner wall of the shell is divided into three annular regions having equal areas, and the metal layer is attached to the upper, middle and lower annular regions.

8. The method of manufacturing a wooden drum according to claim 1, wherein in the sixth step, the buffy coat is stretched using a weight block of 20kg or more.

9. The method for manufacturing a wood drum according to claim 1, wherein the semi-dried cowhide is mechanically stretched using a stretching device in the seventh step; the stretching device includes:

an eccentric drum which is driven by a motor to eccentrically rotate;

the surface of the driven roller is provided with a plurality of spherical bulges, and the driven roller is parallel to the eccentric roller;

the distance adjusting guide rail is arranged between the eccentric roller and the driven roller, a base is arranged on the distance adjusting guide rail in a matching mode, the driven roller is erected on the base, and the base moves along the distance adjusting guide rail to adjust the distance between the driven roller and the eccentric roller;

the heating module comprises heating wires, a power supply and a temperature control switch which are connected in series to form a loop, the heating wires are distributed on the inner wall of the driven roller and used for heating the driven roller, and the temperature control switch is arranged in the driven roller and configured to be a circuit which is more than 55 ℃ and is open and a circuit which is less than 55 ℃.