CN203449092U

CN203449092U - Transverse finishing oil cylinder supporting seat of screw tap relief grinding machine

Info

Publication number: CN203449092U
Application number: CN201320561218.5U
Authority: CN
Inventors: 张耀良; 金立峰; 王跃慧; 张哮良
Original assignee: PINGHU TOOL FACTORY ZHEJIANG
Current assignee: PINGHU TOOL FACTORY ZHEJIANG
Priority date: 2013-09-11
Filing date: 2013-09-11
Publication date: 2014-02-26
Anticipated expiration: 2023-09-11

Abstract

The utility model discloses a transverse finishing oil cylinder supporting seat of a screw tap relief grinding machine. The transverse finishing oil cylinder supporting seat is provided with a cuboid metal seat, wherein a round through hole is drilled from the center of the front to the rear of the metal seat; first large and small round holes which are of concentric circles and are communicated to form a through hole are drilled in the front of the metal seat and from the upper left surface to the rear of the round through hole; second large and small round holes are symmetrically drilled in the front of the metal seat and the upper right surface of the round through hole; third large and small round holes which are of concentric circles and are communicated to form a through hole are drilled in the front of the metal seat and from the lower left surface to the rear of the round through hole; fourth large and small round holes are symmetrically drilled in the front of the metal seat and the lower right surface of the round through hole; fifth large and small round holes which are of concentric circles and are communicated to form a through hole are drilled in the rear of the metal seat and from the left side to the front of the first large round hole; sixth large and small round holes are symmetrically drilled in the rear of the metal seat and the right side of the second large round hole; seventh large and small round holes which are of concentric circles and are communicated to form a through hole are drilled in the rear of the metal seat and from the left side to the front of the third large round hole; eighth large and small round holes which are of concentric circles and are communicated to form a through hole are symmetrically drilled in the rear of the metal seat and the right side of the fourth large round hole; each side of the metal seat is cut into a chamfer.

Description

The horizontal finishing oil cylinder supporting seat of screw tap Special Turbine Grinding Machine

Technical field

The utility model belongs to the horizontal finishing oil cylinder supporting seat of screw tap Special Turbine Grinding Machine, the instrument to using on Digit Control Machine Tool specifically---the blade of screw tap carries out the horizontal finishing oil cylinder supporting seat of the screw tap Special Turbine Grinding Machine that relief grinding is sharp, is that the instrument that lathe is used is a kind of new equipment that screw tap is processed---the vitals of screw tap Special Turbine Grinding Machine.

Background technology

Conventionally, in machine-building, processing factory, must use: the one, lathe, the 2nd, the instrument using on lathe, indispensable, good lathe is as Digit Control Machine Tool, the instrument using is as screw tap, and the blade of screw tap makes it sharp, allows the class qualitatively of screw tap, need to process screw tap, relief grinding, allow the keen edge of screw tap, the quality of screw tap is good, and the product of making is just superior; And to reach this object, need Special Turbine Grinding Machine to complete; The mostly import of existing Special Turbine Grinding Machine, expensive; Seldom domestic, and impracticable, use inconvenience, miss one's aim; This enterprise is in years of researches, experiment, and novel Special Turbine Grinding Machine novel, practical, with low cost has been manufactured in innovation, and crudy is good, can be beautiful with import Special Turbine Grinding Machine one's deceased mother; And the horizontal finishing oil cylinder supporting seat of this screw tap Special Turbine Grinding Machine is one of them vitals, design correct, rational in infrastructure, can make Special Turbine Grinding Machine good stability, working stability, action is correct, keen edge, the precision of the screw tap that relief grinding goes out are high, relief grinding puts in place, the defect such as overcome Special Turbine Grinding Machine relief grinding dislocation that the horizontal finishing oil cylinder supporting seat of common Special Turbine Grinding Machine causes because of design mistake, unreasonable structure, precision is not high, the knife edge is turned.

Summary of the invention

The purpose of this utility model is to provide the horizontal finishing oil cylinder supporting seat of screw tap Special Turbine Grinding Machine, the horizontal finishing oil cylinder supporting seat of screw tap Special Turbine Grinding Machine is a vitals of Special Turbine Grinding Machine, design correct, rational in infrastructure, can make Special Turbine Grinding Machine good stability at work, guarantee Special Turbine Grinding Machine working stability, action is correct, keen edge, the precision of the screw tap that relief grinding goes out are high, relief grinding puts in place, the defect such as overcome Special Turbine Grinding Machine relief grinding dislocation that the horizontal finishing oil cylinder supporting seat of common Special Turbine Grinding Machine causes because of design mistake, unreasonable structure, precision is not high, the knife edge is turned.

Technical scheme: the horizontal finishing oil cylinder supporting seat of screw tap Special Turbine Grinding Machine, comprise metal pedestal and round tube hole, it is characterized in that metal pedestal is the metal pedestal of a cuboid, the left and right length of metal pedestal is 80 ㎜, that upper and lower is highly 50 ㎜, and forward and backward width is 16 ㎜; Metal pedestal above among the heart, be drilled with a round tube hole backward, the diameter of round tube hole is 32 ㎜; Round tube hole be through hole, from metal pedestal drill through above always metal pedestal after.

Before metal pedestal and in face place, the upper left of round tube hole, be drilled with first circular hole backward, the diameter of first circular hole is 10 ㎜, and the degree of depth is 8 ㎜; After first circular hole, be drilled with backward the first small sircle hole, the diameter of the first small sircle hole is 6.5 ㎜ again, and the degree of depth is 8 ㎜; First circular hole and the first small sircle hole are concentric circles; First circular hole and the first small sircle hole be communicated with into through hole, from metal pedestal drill through above always metal pedestal after; The distance of center circle of first circular hole and the first small sircle hole is 21.5 ㎜ from the left side of metal pedestal.

Before metal pedestal and in face place, the upper right of round tube hole, be drilled with second largest circular hole backward, the diameter of second largest circular hole is 10 ㎜, and the degree of depth is 8 ㎜; After second largest circular hole, be drilled with backward the second small sircle hole, the diameter of the second small sircle hole is 6.5 ㎜ again, and the degree of depth is 8 ㎜; Second largest circular hole and the second small sircle hole are concentric circles; Second largest circular hole and the second small sircle hole be communicated with into through hole, from metal pedestal drill through above always metal pedestal after; The distance of center circle of second largest circular hole and the second small sircle hole is 21.5 ㎜ from the right side of metal pedestal; Second largest circular hole and the second small sircle hole and first circular hole and the corresponding symmetry of the first small sircle hole.

Before metal pedestal and in face place, the lower-left of round tube hole, be drilled with the third-largest circular hole backward, the diameter of the third-largest circular hole is 10 ㎜, and the degree of depth is 8 ㎜; After the third-largest circular hole, be drilled with backward the 3rd small sircle hole, the diameter of the 3rd small sircle hole is 6.5 ㎜ again, and the degree of depth is 8 ㎜; The third-largest circular hole and the 3rd small sircle hole are concentric circles; The third-largest circular hole and the 3rd small sircle hole be communicated with into through hole, from metal pedestal drill through above always metal pedestal after; The distance of center circle of the third-largest circular hole and the 3rd small sircle hole is 21.5 ㎜ from the left side of metal pedestal.

Before metal pedestal and in face place, the bottom right of round tube hole, be drilled with the fourth-largest circular hole backward, the diameter of the fourth-largest circular hole is 10 ㎜, and the degree of depth is 8 ㎜; After the fourth-largest circular hole, be drilled with backward the 4th small sircle hole, the diameter of the 4th small sircle hole is 6.5 ㎜ again, and the degree of depth is 8 ㎜; The fourth-largest circular hole and the 4th small sircle hole are concentric circles; The fourth-largest circular hole and the 4th small sircle hole be communicated with into through hole, from metal pedestal drill through above always metal pedestal after; The distance of center circle of the fourth-largest circular hole and the 4th small sircle hole is 21.5 ㎜ from the right side of metal pedestal; The fourth-largest circular hole and the 4th small sircle hole and the third-largest circular hole and the corresponding symmetry of the 3rd small sircle hole.

After metal pedestal and in the left side of first circular hole and the first small sircle hole, locate, be drilled with the fifth-largest circular hole forward, the diameter of the fifth-largest circular hole is 10 ㎜, and the degree of depth is 8 ㎜; Before the fifth-largest circular hole, be drilled with forward the 5th small sircle hole, the diameter of the 5th small sircle hole is 6 ㎜ again, and the degree of depth is 8 ㎜; The fifth-largest circular hole and the 5th small sircle hole are concentric circles; The fifth-largest circular hole and the 5th small sircle hole be communicated with into through hole, from metal pedestal drill through below always metal pedestal before; The distance of center circle of the fifth-largest circular hole and the 5th small sircle hole is 7.5 ㎜ from the left side of metal pedestal.

After metal pedestal and in the right side of second largest circular hole and the second small sircle hole, locate, be drilled with the sixth-largest circular hole forward, the diameter of the sixth-largest circular hole is 10 ㎜, and the degree of depth is 8 ㎜; Before the sixth-largest circular hole, be drilled with forward the 6th small sircle hole, the diameter of the 6th small sircle hole is 6 ㎜ again, and the degree of depth is 8 ㎜; The sixth-largest circular hole and the 6th small sircle hole are concentric circles; The sixth-largest circular hole and the 6th small sircle hole be communicated with into through hole, from metal pedestal drill through below always metal pedestal before; The distance of center circle of the sixth-largest circular hole and the 6th small sircle hole is 7.5 ㎜ from the right side of metal pedestal; The sixth-largest circular hole and the 6th small sircle hole and the fifth-largest circular hole and the corresponding symmetry of the 5th small sircle hole.

After metal pedestal and in the left side of the third-largest circular hole and the 3rd small sircle hole, locate, be drilled with the seventh-largest circular hole forward, the diameter of the seventh-largest circular hole is 10 ㎜, and the degree of depth is 8 ㎜; Before the seventh-largest circular hole, be drilled with forward the 7th small sircle hole, the diameter of the 7th small sircle hole is 6 ㎜ again, and the degree of depth is 8 ㎜; The seventh-largest circular hole and the 7th small sircle hole are concentric circles; The seventh-largest circular hole and the 7th small sircle hole be communicated with into through hole, from metal pedestal drill through below always metal pedestal before; The distance of center circle of the seventh-largest circular hole and the 7th small sircle hole is 7.5 ㎜ from the left side of metal pedestal.

After metal pedestal and in the right side of the fourth-largest circular hole and the 4th small sircle hole, locate, be drilled with the eighth-largest circular hole forward, the diameter of the eighth-largest circular hole is 10 ㎜, and the degree of depth is 8 ㎜; Before the eighth-largest circular hole, be drilled with forward the 8th small sircle hole, the diameter of the 8th small sircle hole is 6 ㎜ again, and the degree of depth is 8 ㎜; The eighth-largest circular hole and the 8th small sircle hole are concentric circles; The eighth-largest circular hole and the 8th small sircle hole be communicated with into through hole, from metal pedestal drill through below always metal pedestal before; The distance of center circle of the eighth-largest circular hole and the 8th small sircle hole is 7.5 ㎜ from the right side of metal pedestal; The eighth-largest circular hole and the 8th small sircle hole and the seventh-largest circular hole and the corresponding symmetry of the 7th small sircle hole.

On the left side of metal pedestal, limit is lathed to first chamfering of 45 °, and chamfering distance is 0.5 ㎜; Under the left side of metal pedestal, limit is lathed to second chamfering of 45 °, and chamfering distance is 0.5 ㎜; On the right side of metal pedestal, limit is lathed to the 3rd chamfering of 45 °, and chamfering distance is 0.5 ㎜; Under the right side of metal pedestal, limit is lathed to the 4th chamfering of 45 °, and chamfering distance is 0.5 ㎜; The left side above in metal pedestal is lathed to the 5th chamfering of 45 °, and chamfering distance is 0.5 ㎜; The right above in metal pedestal is lathed to the 6th chamfering of 45 °, and chamfering distance is 0.5 ㎜; On before metal pedestal, limit is lathed to the 7th chamfering of 45 °, and chamfering distance is 0.5 ㎜; Under before metal pedestal, limit is lathed to the 8th chamfering of 45 °, and chamfering distance is 0.5 ㎜; The left side below in metal pedestal is lathed to the 9th chamfering of 45 °, and chamfering distance is 0.5 ㎜; The right below in metal pedestal is lathed to the tenth chamfering of 45 °, and chamfering distance is 0.5 ㎜; On after metal pedestal, limit is lathed to the 11 chamfering of 45 °, and chamfering distance is 0.5 ㎜; Under after metal pedestal, limit is lathed to the 12 chamfering of 45 °, and chamfering distance is 0.5 ㎜; The horizontal finishing oil cylinder supporting seat of screw tap Special Turbine Grinding Machine can be made of materials such as steel or copper material or aluminium alloys.

The utility model has the advantages that: the horizontal finishing oil cylinder supporting seat that screw tap Special Turbine Grinding Machine is provided, the horizontal finishing oil cylinder supporting seat of screw tap Special Turbine Grinding Machine is a vitals of Special Turbine Grinding Machine, design correct, rational in infrastructure, can make Special Turbine Grinding Machine good stability at work, thereby guarantee Special Turbine Grinding Machine working stability, action is correct, keen edge, the precision of the screw tap that relief grinding goes out are high, relief grinding puts in place, the defect such as overcome Special Turbine Grinding Machine relief grinding dislocation that the horizontal finishing oil cylinder supporting seat of common Special Turbine Grinding Machine causes because of design mistake, unreasonable structure, precision is not high, the knife edge is turned; Can meet enterprise's Production requirement.

Accompanying drawing explanation

The main TV structure schematic diagram of the horizontal finishing oil cylinder supporting seat of Fig. 1 screw tap Special Turbine Grinding Machine

The relevant sectional structure schematic diagram of overlooking of the horizontal finishing oil cylinder supporting seat of Fig. 2 screw tap Special Turbine Grinding Machine

The relevant sectional structure schematic diagram that a left side for the horizontal finishing oil cylinder supporting seat of Fig. 3 screw tap Special Turbine Grinding Machine is looked

The relevant sectional structure schematic diagram that the right side of the horizontal finishing oil cylinder supporting seat of Fig. 4 screw tap Special Turbine Grinding Machine is looked

The specific embodiment

Below in conjunction with accompanying drawing in detail the utility model is described in detail:

The horizontal finishing oil cylinder supporting seat of screw tap Special Turbine Grinding Machine, comprises metal pedestal and round tube hole, it is characterized in that metal pedestal 1 is the metal pedestal of a cuboid, and the left and right length of metal pedestal 1 is 80 ㎜, and that upper and lower is highly 50 ㎜, and forward and backward width is 16 ㎜; Metal pedestal 1 above among the heart, be drilled with a round tube hole 2 backward, the diameter of round tube hole 2 is 32 ㎜; Round tube hole 2 be through hole, from metal pedestal 1 drill through above always metal pedestal 1 after.

Before metal pedestal 1 and in face place, the upper left of round tube hole 2, be drilled with first circular hole 11 backward, the diameter of first circular hole 11 is 10 ㎜, and the degree of depth is 8 ㎜; The diameter that is drilled with backward again the first small sircle hole 12, the first small sircle holes 12 below at first circular hole 11 is 6.5 ㎜, and the degree of depth is 8 ㎜; First circular hole 11 and the first small sircle hole 12 are concentric circles; First circular hole 11 and the first small sircle hole 12 be communicated with into through hole, from metal pedestal 1 drill through above always metal pedestal 1 after; The distance of center circle of first circular hole 11 and the first small sircle hole 12 is 21.5 ㎜ from the left side of metal pedestal 1.

Before metal pedestal 1 and in face place, the upper right of round tube hole 2, be drilled with second largest circular hole 13 backward, the diameter of second largest circular hole 13 is 10 ㎜, and the degree of depth is 8 ㎜; The diameter that is drilled with backward again the second small sircle hole 14, the second small sircle holes 14 below at second largest circular hole 13 is 6.5 ㎜, and the degree of depth is 8 ㎜; Second largest circular hole 13 and the second small sircle hole 14 are concentric circles; Second largest circular hole 13 and the second small sircle hole 14 be communicated with into through hole, from metal pedestal 1 drill through above always metal pedestal 1 after; The distance of center circle of second largest circular hole 13 and the second small sircle hole 14 is 21.5 ㎜ from the right side of metal pedestal 1; Second largest circular hole 13 and the second small sircle hole 14 and first circular hole 11 and the corresponding symmetry of the first small sircle hole 12.

Before metal pedestal 1 and in face place, the lower-left of round tube hole 2, be drilled with the third-largest circular hole 15 backward, the diameter of the third-largest circular hole 15 is 10 ㎜, and the degree of depth is 8 ㎜; The diameter that is drilled with backward again the 3rd small sircle hole 16, the three small sircle holes 16 below at the third-largest circular hole 15 is 6.5 ㎜, and the degree of depth is 8 ㎜; The third-largest circular hole 15 and the 3rd small sircle hole 16 are concentric circles; The third-largest circular hole 15 and the 3rd small sircle hole 16 be communicated with into through hole, from metal pedestal 1 drill through above always metal pedestal 1 after; The distance of center circle of the third-largest circular hole 15 and the 3rd small sircle hole 16 is 21.5 ㎜ from the left side of metal pedestal 1.

Before metal pedestal 1 and in face place, the bottom right of round tube hole 2, be drilled with the fourth-largest circular hole 17 backward, the diameter of the fourth-largest circular hole 17 is 10 ㎜, and the degree of depth is 8 ㎜; The diameter that is drilled with backward again the 4th small sircle hole 18, the four small sircle holes 18 below at the fourth-largest circular hole 17 is 6.5 ㎜, and the degree of depth is 8 ㎜; The fourth-largest circular hole 17 and the 4th small sircle hole 18 are concentric circles; The fourth-largest circular hole 17 and the 4th small sircle hole 18 be communicated with into through hole, from metal pedestal 1 drill through above always metal pedestal 1 after; The distance of center circle of the fourth-largest circular hole 17 and the 4th small sircle hole 18 is 21.5 ㎜ from the right side of metal pedestal 1; The fourth-largest circular hole 17 and the 4th small sircle hole 18 and the third-largest circular hole 15 and the corresponding symmetry of the 3rd small sircle hole 16.

After metal pedestal 1 and in the left side of first circular hole 11 and the first small sircle hole 12, locate, be drilled with the fifth-largest circular hole 27 forward, the diameter of the fifth-largest circular hole 27 is 10 ㎜, and the degree of depth is 8 ㎜; The diameter that is drilled with forward again the 5th small sircle hole 3, the five small sircle holes 3 above at the fifth-largest circular hole 27 is 6 ㎜, and the degree of depth is 8 ㎜; The fifth-largest circular hole 27 and the 5th small sircle hole 3 are concentric circles; The fifth-largest circular hole 27 and the 5th small sircle hole 3 be communicated with into through hole, from metal pedestal 1 drill through below always metal pedestal 1 before; The distance of center circle of the fifth-largest circular hole 27 and the 5th small sircle hole 3 is 7.5 ㎜ from the left side of metal pedestal 1.

After metal pedestal 1 and in the right side of second largest circular hole 13 and the second small sircle hole 14, locate, be drilled with the sixth-largest circular hole forward, the diameter of the sixth-largest circular hole is 10 ㎜, and the degree of depth is 8 ㎜; The diameter that is drilled with forward again the 6th small sircle hole 5, the six small sircle holes 5 above at the sixth-largest circular hole is 6 ㎜, and the degree of depth is 8 ㎜; The sixth-largest circular hole and the 6th small sircle hole 5 are concentric circles; The sixth-largest circular hole and the 6th small sircle hole 5 be communicated with into through hole, from metal pedestal 1 drill through below always metal pedestal 1 before; The distance of center circle of the sixth-largest circular hole and the 6th small sircle hole 5 is 7.5 ㎜ from the right side of metal pedestal 1; The sixth-largest circular hole and the 6th small sircle hole 5 and the fifth-largest circular hole 27 and the corresponding symmetry of the 5th small sircle hole 3.

After metal pedestal 1 and in the left side of the third-largest circular hole 15 and the 3rd small sircle hole 16, locate, be drilled with the seventh-largest circular hole 28 forward, the diameter of the seventh-largest circular hole 28 is 10 ㎜, and the degree of depth is 8 ㎜; The diameter that is drilled with forward again the 7th small sircle hole 4, the seven small sircle holes 4 above at the seventh-largest circular hole 28 is 6 ㎜, and the degree of depth is 8 ㎜; The seventh-largest circular hole 28 and the 7th small sircle hole 4 are concentric circles; The seventh-largest circular hole 28 and the 7th small sircle hole 4 be communicated with into through hole, from metal pedestal 1 drill through below always metal pedestal 1 before; The distance of center circle of the seventh-largest circular hole 28 and the 7th small sircle hole 4 is 7.5 ㎜ from the left side of metal pedestal 1.

After metal pedestal 1 and in the right side of the fourth-largest circular hole 17 and the 4th small sircle hole 18, locate, be drilled with the eighth-largest circular hole forward, the diameter of the eighth-largest circular hole is 10 ㎜, and the degree of depth is 8 ㎜; The diameter that is drilled with forward again the 8th small sircle hole 6, the eight small sircle holes 6 above at the eighth-largest circular hole is 6 ㎜, and the degree of depth is 8 ㎜; The eighth-largest circular hole and the 8th small sircle hole 6 are concentric circles; The eighth-largest circular hole and the 8th small sircle hole 6 be communicated with into through hole, from metal pedestal 1 drill through below always metal pedestal 1 before; The distance of center circle of the eighth-largest circular hole and the 8th small sircle hole 6 is 7.5 ㎜ from the right side of metal pedestal 1; The eighth-largest circular hole and the 8th small sircle hole 6 and the seventh-largest circular hole 28 and the corresponding symmetry of the 7th small sircle hole 4.

On the left side of metal pedestal 1, limit is lathed to first chamfering 7 of 45 °, and chamfering distance is 0.5 ㎜; Under the left side of metal pedestal 1, limit is lathed to second chamfering 8 of 45 °, and chamfering distance is 0.5 ㎜; On the right side of metal pedestal 1, limit is lathed to the 3rd chamfering 9 of 45 °, and chamfering distance is 0.5 ㎜; Under the right side of metal pedestal 1, limit is lathed to the 4th chamfering 10 of 45 °, and chamfering distance is 0.5 ㎜; The left side above in metal pedestal 1 is lathed to the 5th chamfering 20 of 45 °, and chamfering distance is 0.5 ㎜; The right above in metal pedestal 1 is lathed to the 6th chamfering 22 of 45 °, and chamfering distance is 0.5 ㎜; On before metal pedestal 1, limit is lathed to the 7th chamfering 23 of 45 °, and chamfering distance is 0.5 ㎜; Under before metal pedestal 1, limit is lathed to the 8th chamfering 24 of 45 °, and chamfering distance is 0.5 ㎜; The left side below in metal pedestal 1 is lathed to the 9th chamfering 19 of 45 °, and chamfering distance is 0.5 ㎜; The right below in metal pedestal 1 is lathed to the tenth chamfering 21 of 45 °, and chamfering distance is 0.5 ㎜; On after metal pedestal 1, limit is lathed to the 11 chamfering 25 of 45 °, and chamfering distance is 0.5 ㎜; Under after metal pedestal 1, limit is lathed to the 12 chamfering 26 of 45 °, and chamfering distance is 0.5 ㎜; The horizontal finishing oil cylinder supporting seat of screw tap Special Turbine Grinding Machine is made of steel.

Claims

1. the horizontal finishing oil cylinder supporting seat of screw tap Special Turbine Grinding Machine, comprise metal pedestal and round tube hole, it is characterized in that metal pedestal (1) is the metal pedestal of a cuboid, the left and right length of metal pedestal (1) is 80 ㎜, that upper and lower is highly 50 ㎜, and forward and backward width is 16 ㎜; Metal pedestal (1) above among the heart, be drilled with a round tube hole (2) backward, the diameter of round tube hole (2) is 32 ㎜; Round tube hole (2) be through hole, from metal pedestal (1) drill through above always metal pedestal (1) after; Before metal pedestal (1) and in the face place, upper left of round tube hole (2), be drilled with first circular hole (11) backward, the diameter of first circular hole (11) is 10 ㎜, and the degree of depth is 8 ㎜; After first circular hole (11), be drilled with backward the first small sircle hole (12), the diameter of the first small sircle hole (12) is 6.5 ㎜ again, and the degree of depth is 8 ㎜; First circular hole (11) is concentric circles with the first small sircle hole (12); First circular hole (11) and the first small sircle hole (12) be communicated with into through hole, from metal pedestal (1) drill through above always metal pedestal (1) after; The distance of center circle of first circular hole (11) and the first small sircle hole (12) is 21.5 ㎜ from the left side of metal pedestal (1); Before metal pedestal (1) and in the face place, upper right of round tube hole (2), be drilled with second largest circular hole (13) backward, the diameter of second largest circular hole (13) is 10 ㎜, and the degree of depth is 8 ㎜; After second largest circular hole (13), be drilled with backward the second small sircle hole (14), the diameter of the second small sircle hole (14) is 6.5 ㎜ again, and the degree of depth is 8 ㎜; Second largest circular hole (13) is concentric circles with the second small sircle hole (14); Second largest circular hole (13) and the second small sircle hole (14) be communicated with into through hole, from metal pedestal (1) drill through above always metal pedestal (1) after; The distance of center circle of second largest circular hole (13) and the second small sircle hole (14) is 21.5 ㎜ from the right side of metal pedestal (1); Second largest circular hole (13) and the second small sircle hole (14) and first circular hole (11) and the corresponding symmetry of the first small sircle hole (12); Before metal pedestal (1) and in the face place, lower-left of round tube hole (2), be drilled with the third-largest circular hole (15) backward, the diameter of the third-largest circular hole (15) is 10 ㎜, and the degree of depth is 8 ㎜; After the third-largest circular hole (15), be drilled with backward the 3rd small sircle hole (16), the diameter of the 3rd small sircle hole (16) is 6.5 ㎜ again, and the degree of depth is 8 ㎜; The third-largest circular hole (15) is concentric circles with the 3rd small sircle hole (16); The third-largest circular hole (15) and the 3rd small sircle hole (16) be communicated with into through hole, from metal pedestal (1) drill through above always metal pedestal (1) after; The distance of center circle of the third-largest circular hole (15) and the 3rd small sircle hole (16) is 21.5 ㎜ from the left side of metal pedestal (1); Before metal pedestal (1) and in the face place, bottom right of round tube hole (2), be drilled with the fourth-largest circular hole (17) backward, the diameter of the fourth-largest circular hole (17) is 10 ㎜, and the degree of depth is 8 ㎜; After the fourth-largest circular hole (17), be drilled with backward the 4th small sircle hole (18), the diameter of the 4th small sircle hole (18) is 6.5 ㎜ again, and the degree of depth is 8 ㎜; The fourth-largest circular hole (17) is concentric circles with the 4th small sircle hole (18); The fourth-largest circular hole (17) and the 4th small sircle hole (18) be communicated with into through hole, from metal pedestal (1) drill through above always metal pedestal (1) after; The distance of center circle of the fourth-largest circular hole (17) and the 4th small sircle hole (18) is 21.5 ㎜ from the right side of metal pedestal (1); The fourth-largest circular hole (17) and the 4th small sircle hole (18) and the third-largest circular hole (15) and the corresponding symmetry of the 3rd small sircle hole (16); After metal pedestal (1) and in first circular hole (11) and the left side of the first small sircle hole (12), locate, be drilled with the fifth-largest circular hole (27) forward, the diameter of the fifth-largest circular hole (27) is 10 ㎜, and the degree of depth is 8 ㎜; Before the fifth-largest circular hole (27), be drilled with forward the 5th small sircle hole (3), the diameter of the 5th small sircle hole (3) is 6 ㎜ again, and the degree of depth is 8 ㎜; The fifth-largest circular hole (27) is concentric circles with the 5th small sircle hole (3); The fifth-largest circular hole (27) and the 5th small sircle hole (3) be communicated with into through hole, from metal pedestal (1) drill through below always metal pedestal (1) before; The distance of center circle of the fifth-largest circular hole (27) and the 5th small sircle hole (3) is 7.5 ㎜ from the left side of metal pedestal (1); After metal pedestal (1) and in second largest circular hole (13) and the right side of the second small sircle hole (14), locate, be drilled with the sixth-largest circular hole forward, the diameter of the sixth-largest circular hole is 10 ㎜, and the degree of depth is 8 ㎜; Before the sixth-largest circular hole, be drilled with forward the 6th small sircle hole (5), the diameter of the 6th small sircle hole (5) is 6 ㎜ again, and the degree of depth is 8 ㎜; The sixth-largest circular hole and the 6th small sircle hole (5) are concentric circles; The sixth-largest circular hole and the 6th small sircle hole (5) be communicated with into through hole, from metal pedestal (1) drill through below always metal pedestal (1) before; The distance of center circle of the sixth-largest circular hole and the 6th small sircle hole (5) is 7.5 ㎜ from the right side of metal pedestal (1); The sixth-largest circular hole and the 6th small sircle hole (5) and the fifth-largest circular hole (27) and the corresponding symmetry of the 5th small sircle hole (3); After metal pedestal (1) and in the third-largest circular hole (15) and the left side of the 3rd small sircle hole (16), locate, be drilled with the seventh-largest circular hole (28) forward, the diameter of the seventh-largest circular hole (28) is 10 ㎜, and the degree of depth is 8 ㎜; Before the seventh-largest circular hole (28), be drilled with forward the 7th small sircle hole (4), the diameter of the 7th small sircle hole (4) is 6 ㎜ again, and the degree of depth is 8 ㎜; The seventh-largest circular hole (28) is concentric circles with the 7th small sircle hole (4); The seventh-largest circular hole (28) and the 7th small sircle hole (4) be communicated with into through hole, from metal pedestal (1) drill through below always metal pedestal (1) before; The distance of center circle of the seventh-largest circular hole (28) and the 7th small sircle hole (4) is 7.5 ㎜ from the left side of metal pedestal (1); After metal pedestal (1) and in the fourth-largest circular hole (17) and the right side of the 4th small sircle hole (18), locate, be drilled with the eighth-largest circular hole forward, the diameter of the eighth-largest circular hole is 10 ㎜, and the degree of depth is 8 ㎜; Before the eighth-largest circular hole, be drilled with forward the 8th small sircle hole (6), the diameter of the 8th small sircle hole (6) is 6 ㎜ again, and the degree of depth is 8 ㎜; The eighth-largest circular hole and the 8th small sircle hole (6) are concentric circles; The eighth-largest circular hole and the 8th small sircle hole (6) be communicated with into through hole, from metal pedestal (1) drill through below always metal pedestal (1) before; The distance of center circle of the eighth-largest circular hole and the 8th small sircle hole (6) is 7.5 ㎜ from the right side of metal pedestal (1); The eighth-largest circular hole and the 8th small sircle hole (6) and the seventh-largest circular hole (28) and the corresponding symmetry of the 7th small sircle hole (4); On the left side of metal pedestal (1), limit is lathed to first chamfering (7) of 45 °, and chamfering distance is 0.5 ㎜; Under the left side of metal pedestal (1), limit is lathed to second chamfering (8) of 45 °, and chamfering distance is 0.5 ㎜; On the right side of metal pedestal (1), limit is lathed to the 3rd chamfering (9) of 45 °, and chamfering distance is 0.5 ㎜; Under the right side of metal pedestal (1), limit is lathed to the 4th chamfering (10) of 45 °, and chamfering distance is 0.5 ㎜; The left side above in metal pedestal (1) is lathed to the 5th chamfering (20) of 45 °, and chamfering distance is 0.5 ㎜; The right above in metal pedestal (1) is lathed to the 6th chamfering (22) of 45 °, and chamfering distance is 0.5 ㎜; On before metal pedestal (1), limit is lathed to the 7th chamfering (23) of 45 °, and chamfering distance is 0.5 ㎜; Under before metal pedestal (1), limit is lathed to the 8th chamfering (24) of 45 °, and chamfering distance is 0.5 ㎜; The left side below in metal pedestal (1) is lathed to the 9th chamfering (19) of 45 °, and chamfering distance is 0.5 ㎜; The right below in metal pedestal (1) is lathed to the tenth chamfering (21) of 45 °, and chamfering distance is 0.5 ㎜; On after metal pedestal (1), limit is lathed to the 11 chamfering (25) of 45 °, and chamfering distance is 0.5 ㎜; Under after metal pedestal (1), limit is lathed to the 12 chamfering (26) of 45 °, and chamfering distance is 0.5 ㎜.