CN114473384B - Precision machining process for main motor supporting plate hole system of numerical control mine rope saw - Google Patents

Precision machining process for main motor supporting plate hole system of numerical control mine rope saw Download PDF

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CN114473384B
CN114473384B CN202210123801.1A CN202210123801A CN114473384B CN 114473384 B CN114473384 B CN 114473384B CN 202210123801 A CN202210123801 A CN 202210123801A CN 114473384 B CN114473384 B CN 114473384B
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motor
supporting plate
hole
main motor
motor supporting
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CN114473384A (en
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顾立志
宋金玲
高善平
顾春阳
肖俊彦
陈核炉
梁成龙
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Quanzhou Institute of Information Engineering
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B27/00—Tools for turning or boring machines; Tools of a similar kind in general; Accessories therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B29/00—Holders for non-rotary cutting tools; Boring bars or boring heads; Accessories for tool holders
    • B23B29/02—Boring bars

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Abstract

The invention provides a precision machining process for a main motor supporting plate hole system of a numerical control mine rope saw, which comprises the following steps: s1, obtaining a rough blank motor supporting plate after precision casting and demolding; s2, carrying out tempering heat treatment on the rough blank motor supporting plate to obtain a heat treatment tray; s3, carrying out magnetic flaw detection on the heat treatment motor supporting plate, if the heat treatment motor supporting plate is qualified, carrying out milling in the next step, and if the heat treatment motor supporting plate is not qualified, eliminating the heat treatment motor supporting plate and carrying out weighing; s4, roughly milling a motor bracket, a first side plate and a second side plate of the heat treatment motor supporting plate, and finely milling the upper surface of the motor bracket to obtain a fine blank tray; and S5, taking the upper surface of the motor bracket as a fixed reference, taking the output shaft hole shaft of the stepping motor and the adjusting and mounting hole shaft of the main motor as a positioning reference, and precisely adjusting the cutter through an adjusting screw rod with an ultra-large diameter-micro lead ratio to open holes on two side plates on the side surface of the fine blank motor supporting plate.

Description

Precision machining process for main motor supporting plate hole system of numerical control mine rope saw
Technical Field
The invention belongs to the field of finish machining, and particularly relates to a precision machining process for a supporting plate hole system of a main motor of a numerical control mine rope saw.
Background
The main motor supporting plate is a key part for supporting the main motor of the numerical control mine rope saw, not only provides main power for the rope saw, but also directly influences the working state of the whole machine by connecting the saw rope with the supporting plate and connecting the saw rope with a driving wheel. The hole system of installation lead screw mechanism and guide pillar on the layer board, it is high to the required precision, and because the lead screw structure in the different sides of layer board all has the difference with the installation aperture of guide pillar, and then leads to its hole system processing degree of difficulty big to lead to the finished product to accomplish the cycle length.
Disclosure of Invention
In order to solve the technical problems, the invention provides a precision machining process for a supporting plate hole system of a main motor of a numerical control mine rope saw, which aims to solve the existing problems.
To overcome the defects of the prior art, the invention provides the purpose and the effect of the precision machining process of the main motor supporting plate hole system of the numerical control mine rope saw, which are achieved by the following specific technical means: a numerical control mine rope saw main motor supporting plate hole system precision machining process comprises the following steps:
s1, obtaining a rough blank motor supporting plate after precision casting and demolding;
s2, carrying out tempering heat treatment on the rough blank motor supporting plate to obtain a heat treatment tray;
s3, carrying out magnetic flaw detection on the heat treatment motor supporting plate, if the heat treatment motor supporting plate is qualified, carrying out milling in the next step, and if the heat treatment motor supporting plate is not qualified, eliminating the heat treatment motor supporting plate and carrying out recasting;
s4, roughly milling a motor bracket, a first side plate and a second side plate of the heat treatment motor supporting plate, and finely milling the upper surface of the motor bracket to obtain a fine blank tray;
s5, taking the upper surface of a motor bracket as a fixed reference, taking a hole shaft of an output shaft of a stepping motor and a shaft of a main motor adjusting and mounting hole as positioning references, accurately adjusting a cutter through an adjusting screw rod with an ultra-large diameter-micro lead ratio, and perforating two side plates on the side surface of the fine blank motor supporting plate;
and S6, detecting the aperture of the motor supporting plate with the holes, the parallelism of the holes and the perpendicularity of the axis of each hole and the end face of the motor supporting plate with the holes by using an instrument.
Compared with the prior art, the invention has the following advantagesAdvantageous effects：
According to the numerical control mountain rope saw, the hole system of the supporting plate on which a main motor of the numerical control mountain rope saw is supported is precisely processed, the single-end floating boring tool is precisely regulated and controlled through the micro lead ratio precision adjusting screw rod, and further the hole system used for mounting the screw rod mechanism and the guide pillar on the supporting plate is precisely processed, so that the feeding of the tool is finely adjusted, the dimensional precision is improved, and the high precision of the position of the hole system is ensured; the hole systems on the supporting plate are positioned by adopting a mutual reference positioning method, so that the hole systems are parallel to each other and vertical to the end surface; the optimal positioning scheme with zero theoretical positioning error is adopted, so that the high precision of the hole system position is ensured; and the machining precision and the productivity are further improved by adopting the single-head floating boring cutter.
Drawings
FIG. 1 is a flow chart of the precision processing technology of the main motor supporting plate hole system of the numerical control mine rope saw of the invention.
FIG. 2 is a schematic diagram of a main motor support plate structure of the numerical control wire saw of the invention.
Fig. 3 is an assembly structure diagram of a main motor supporting plate of a numerical control mine rope saw according to the present invention.
Fig. 4 is a schematic structural view of a fine adjustment screw assembly.
Fig. 5 is a schematic view of the installation and fitting of the lead screw.
FIG. 6 is a schematic view of the assembly structure of the single-head floating boring cutter assembly.
Fig. 7 is a schematic cross-sectional view of a tool tip.
Fig. 8 is a schematic view of a tool tip configuration.
Fig. 9 is a schematic view of a tool tip configuration.
Fig. 10 is an assembly structure view of the double single-head floating boring tool boring mechanism.
Detailed Description
The embodiments of the present invention will be described in further detail with reference to the drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
In the description of the present invention, "a plurality" means two or more unless otherwise specified; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, e.g., as being fixed or detachable or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Examples
As shown in figures 1 to 3:
the invention provides a 1-hole system precision machining process for a main motor supporting plate of a numerical control mine rope saw, which comprises the following steps of:
s1, obtaining a rough blank motor supporting plate 1 after precision casting and demolding;
s2, carrying out tempering heat treatment on the rough blank motor supporting plate 1 to obtain a heat treatment tray;
s3, carrying out magnetic flaw detection on the heat treatment motor supporting plate 1, if the heat treatment motor supporting plate is qualified, carrying out milling in the next step, and if the heat treatment motor supporting plate is not qualified, eliminating the heat treatment motor supporting plate and carrying out recasting;
s4, roughly milling a motor bracket, a first side plate 11 and a second side plate 12 of the heat treatment motor supporting plate 1, and finely milling the upper surface of the motor bracket to obtain a fine blank tray;
s5, taking the upper surface of a motor bracket as a fixed reference, and then taking a hole shaft of an output shaft of a stepping motor and a hole shaft of a main motor adjusting and mounting hole as positioning references, accurately adjusting a cutter through an adjusting screw rod with an ultra-large diameter-micro lead ratio, and tapping two side plates on the side surface of the fine blank motor supporting plate 1;
and S6, detecting the aperture of the motor supporting plate with holes 1, the parallelism of each hole and the perpendicularity of the axis of each hole and the end face where the hole is located by using an instrument.
In step S3, magnetic flaw detection is performed on the pallet 1, and it is mainly detected whether there is a defect on the upper surface of the pallet 1 for the main motor mounting surface.
In step S5, the output shaft hole of the stepping motor and the adjustment mounting hole of the main motor are each a positioning reference, and the method includes: the output shaft hole of the stepping motor is positioned in the middle of the first side plate 11 and is set as a first hole; the main motor adjusting and mounting hole on the first side plate 11 is provided with a second hole and a third hole, the second side plate 12 is coaxially provided with a fourth hole corresponding to the second hole and a fifth hole corresponding to the third hole, and the main motor adjusting and mounting hole is used for mounting the screw rod mechanism.
S51, reaming a main motor adjusting installation hole in the side plate by taking the lower surface of the first side plate 11, the upper surface of the motor bracket and an output shaft hole of the stepping motor as references;
s511, reaming the second hole and the third hole on the first side plate 11 and the fourth hole and the fifth hole on the second side plate 12 with the lower surface of the first side plate 11, the upper surface of the motor bracket, and the first hole as references;
s512, initially punching a first hole, a second hole, a third hole, a fourth hole and a fifth hole on the first side plate 11 and the second side plate 12 to reach the size of R27mm;
s513, reaming the first side plate 11 and the second side plate 12 for the first time to reach the size of R29mm;
s514, reaming the first side plate 11 for the second time to reach the size of R42mm;
s52, carrying out semi-finish boring on the output shaft hole of the stepping motor by taking two main motor adjusting and mounting holes coaxially corresponding to the two side plates and the upper surface of the motor bracket as references;
s521, performing semi-fine boring on the first hole by taking the second hole, the fourth hole and the upper surface of the motor bracket as references;
s53, carrying out semi-fine boring on the main motor adjusting mounting hole on the side plate by taking the output shaft hole of the stepping motor and the upper surface of the motor bracket as references;
s531, carrying out semi-finish boring on the second hole, the fourth hole, the third hole and the fifth hole by taking the first hole and the upper surface of the motor bracket as references;
s54, taking two main motor adjusting and mounting holes coaxially corresponding to the two side plates and the upper surface of the motor bracket as references, and machining an output shaft hole of the stepping motor by adopting floating fine boring;
s541, floating fine boring is adopted to machine the first hole by taking the second hole, the fourth hole and the upper surface of the motor bracket as references;
s55, carrying out floating fine boring on the main motor adjusting mounting hole on the side plate by taking the output shaft hole of the stepping motor and the upper surface of the motor bracket as references;
s551, carrying out floating fine boring processing on the second hole, the fourth hole, the third hole and the fifth hole by taking the first hole and the upper surface of the motor bracket as references;
s56, carrying out finish reaming processing on the output shaft hole of the stepping motor by taking two main motor adjusting mounting holes coaxially corresponding to the two side plates and the upper surface of the motor bracket as references;
s561, fine-hinging the first hole by taking the second hole, the fourth hole and the upper surface of the motor bracket as references;
s57, carrying out finish reaming on main motor adjusting mounting holes on the two side plates by taking the output shaft hole of the stepping motor and the upper surface of the motor bracket as references;
and S571, performing finish reaming on the second hole, the fourth hole, the third hole and the fifth hole by taking the first hole and the upper surface of the motor bracket as references.
In step S51, the distance from the axis of the first hole to the upper surface of the motor bracket is 115mm, and the distance to the two side surfaces of the motor bracket is 355mm;
the distance between the axle centers of the second hole and the first hole and the distance between the axle centers of the third hole and the first hole are 250mm;
the axle center interval of second hole and third hole is 500mm, the second hole is coaxial with the fourth hole, third hole and fifth hole are coaxial.
Further, layer board 1 is after processing is accomplished, the first hole diameter in the middle of first curb plate 11 is 65mm, and second hole and third hole diameter are 95mm, fourth hole and fifth hole diameter on the second curb plate 12 are 70mm.
In step S55, the floating fine boring process uses a floating single-head precision boring cutter, and the front angle of the cutter head of the boring cutter: γ o = -14 ° -16 °, rear angle: alpha o = 6.5-8 °, main deflection angle: khosam r = 74-75.5 °, auxiliary declination: xr' =13.5 ° to 15 °, blade inclination angle: λ s = -7 ° -9 °. The angle of the boring cutter head is further optimized through inspection, and the front angle of the boring cutter head is as follows: γ o = -15 °, relief angle: α o =7 °, main bias angle: -r =75 °, minor deviation angle: xr' =14 °, blade inclination angle: λ s = -8 °, when the boring cutter head performs hole machining, stability of the cutter head in a working state can be improved through optimization of a cut-in angle and a stress structure, micro deviation of the cutter head can be reduced, and cutting noise generated in a working process of the cutter head can be reduced.
In step S5, the semi-finish boring is fed to a length of 2mm, the floating finish boring is fed to a length of 1mm, the finish-reaming of the second side plate 12 is fed to a length of 1mm, and the finish-reaming of the first side plate 11 is fed to a length of 0.5mm.
In step S5, the inner side of the second side plate 12 is provided with an inner extension cylinder, the feeding distance between the left side and the right side of the cutter has a difference of 50mm, the inner sides of the fourth hole and the fifth hole are provided with inner extension cylinders with a length of 50mm, and the feeding depth of the cutter needs to be increased by 50mm.
In step S6, an on-line digital aperture detector is used to detect the aperture of the motor pallet 1 with holes, and a digital profiler is used to detect the parallelism of each hole and the perpendicularity of the axis of each hole and the end surface on which the hole is located on line.
In this embodiment, the same set of positioning elements is used, the wear of the working surfaces of the positioning elements being ignored, i.e. wear
Tb1≈0,Tb2≈0
Is provided with
Figure GDA0003888070250000071
The hole site size is manufactured according to 7 grades of precision, and then:
Δh＝46μm,Δq＝63μm
Figure GDA0003888070250000072
by adopting the positioning method of the process, the positioning reference of the process is superposed with the design reference of the guaranteed size, and the positioning error is obviously reduced and is close to zero theoretically. The specific positioning scheme is shown in the figure, and the positioning error is calculated as follows:
the position error in the vertical direction is calculated by a positioning error calculation formula:
Δdw(Y)＝Δjw+Δjb
Δ jw = Tb1, maximum variation range of the positioning element working surface in the vertical direction (same above); Δ jb =0, and since the two references overlap each other and the variation value in the vertical direction from the design reference for the guaranteed dimension to the machining reference of the present step is zero, Δ dw (Y) = Tb1.
Position error in horizontal direction:
Δdw(X)＝Δjw+Δjb
Δ jw = Tb2, maximum variation range of the positioning element working surface in the horizontal direction; Δ jb =0, and since the two references overlap each other and the variation value in the horizontal direction from the design reference for the guaranteed dimension to the machining reference of the present step is zero, Δ dw (X) = Tb2;
taken together, the hole has a positioning position error of
Figure GDA0003888070250000081
Considering that a batch of pallets 1 (for example 20) is processed, the positioning surfaces of the workpieces have already been processed (see the processing of the corresponding surfaces of the new process), the positioning elements use narrow support plates and do not need to be replaced, namely:
Figure GDA0003888070250000082
at this time, the positioning error is basically eliminated
Figure GDA0003888070250000083
Thereby greatly improving the processing precision.
As shown in fig. 3, a numerical control mine rope saw main motor supporting plate comprises a supporting plate 1 and a main motor 2 arranged above the supporting plate 1, wherein a stepping motor 3 is arranged on the side surface of the supporting plate 1, a screw rod rotating shaft 4 inserted into the side surface of the supporting plate 1 is arranged on the side surface of the stepping motor 3, two guide rods 5 are arranged inside the lower portion of the supporting plate 1, a support piece 6 is slidably mounted on each guide rod 5, a screw rod rotating shaft 4 is rotatably mounted on the side surface of the support piece 6, the upper portion of the support piece 6 is connected with the main motor 2, and when the stepping motor 3 drives the screw rod rotating shaft 4 to rotate, the screw rod rotating shaft 4 controls the support piece 6 to move left and right through the push-pull force generated by a threaded hole inside the support piece 6 during rotation, so that the main motor 2 is controlled to move left and right on the supporting plate 1.
The utility model discloses a two guide arms of motor 2 installation, including layer board 1, the inboard face of layer board is equipped with the extension section of thick bamboo and is used for connecting two guide arms, 1 top of layer board is equipped with two support bars rather than laminating mutually when installing with main motor 2, 1 intermediate position of layer board is equipped with a plurality of rectangle through groove, and the medial surface is equipped with a plurality of strengthening rib be equipped with the extension section of thick bamboo on the second side panel 12 and be used for connecting two guide arms.
As shown in fig. 10, the double-single-head floating boring cutter hole boring mechanism comprises a frame 7, a single-head floating boring cutter assembly 8 and a precision adjusting lead screw assembly 9, wherein the frame 7 is provided with the precision adjusting lead screw assembly 9, the frame 7 is provided with two single-head floating boring cutter assemblies 8, and the single-head floating boring cutter assemblies 8 are connected with the precision adjusting lead screw assembly 9.
As shown in fig. 4 to 5, the precision adjustment screw assembly 9 includes a screw 51, a first limiting member 52, a second limiting member 53, a connecting member 54, a shaft 55, and a motor 56, the first limiting member 52 is nested on the left side of the screw 51, the second limiting member 53 is nested on the right side of the screw 51, the connecting member 54 is rotatably mounted on the screw 51, the shaft 55 is welded to the shaft center of one side of the screw 51, the motor 56 is mounted on one side of the screw 51 where the shaft 55 is disposed, and the screw 51 is connected to the motor 56 through the shaft 55.
Further, the lead screw 51 is a micro lead screw.
In this embodiment, the screw working diameter d, the screw lead L, and the number of thread starts n are set.
When the lead screw rotates for one circle theta =360 degrees =2 pi, the nut moves along the axis by one lead L = n x t, and t is the thread pitch.
When the screw is rotated by delta theta, the nut moves
Figure GDA0003888070250000091
In order to obtain smallness at a certain angle of rotationTo obtain a small adjustment distance, taking n =1, in this case L = t.
In the examples, we take d =100, n =1, l =1; diameter-to-lead ratio q
Figure GDA0003888070250000092
When the screw rotates by 1 degree, namely theta =1/360 degrees =1/2 pi, the displacement S =1/360=0.002777 (mm) of the nut is less than 3 micrometers, and the precision level is achieved; when the stepping motor takes a smaller stepping angle, the workpiece displacement can be further refined, so that the accurate adjustment of the hole system position is ensured.
When a floating fine boring hole system is detected on line, the hole diameter gradually enters a tolerance zone from a relatively small value, and the higher the hole diameter precision is, the narrower the tolerance zone is. The lead screw and nut mechanism with the ultra-large diameter and the micro lead ratio, which is designed by the invention, can meet the requirement of aperture machining precision and obviously improve the qualified product rate.
As shown in fig. 6 to 9, the single-head floating boring cutter assembly 8 comprises a cutter head 61, a front spring 62, a spring sleeve 63, a boring bar 64, a rear spring 65, a first screw 66, a second screw 67 and a blade 68, wherein the blade 68 is mounted on one side of the cutter head 61, the front spring 62 is nested on one side of the cutter head 61 away from the blade 68, the spring sleeve 63 is nested on one side of the cutter head 61 provided with the front spring 62, the cutter head 61 is inserted into the mounting boring bar 64, the rear spring 65 is embedded on one side of the cutter head 61 away from the blade 68, the first screw 66 is embedded on one side of the boring bar 64 close to the rear spring 65 and used for adjusting the extending position of the cutter head 61 and the pre-tightening of the front and rear springs, and the boring bar 64 is provided with one side of the first screw 66 on the basis of the first screw 66 and then rotates the second screw 67 for locking the cutter head 61.
Wherein the blade 68 is made of a novel cold cutting blade material; and the geometric angle of the tool bit 61 is subjected to test and optimization design, and the design values are as follows:
front angle: γ o = -15 °, relief angle: α o =7 °, main bias angle: -r =75 °, secondary declination: xr' =14 °, blade inclination angle: λ s = -8 °.
Furthermore, the front spring 63 and the rear spring 65 play roles of vibration reduction and floating, and the front spring 63 and the rear spring 65 are two groups of serialized spring groups which are selected and matched according to the diameter of a boring hole; and then the precision machining of the floating fine boring (matched with the on-line detection and the adjusting boring) is realized by adjusting and pre-tightening the first screw 66 and locking the second screw 67.
The embodiments of the present invention have been presented for purposes of illustration and description, and are not intended to be exhaustive or limited to the invention in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiment was chosen and described in order to best explain the principles of the invention and the practical application, and to enable others of ordinary skill in the art to understand the invention for various embodiments with various modifications as are suited to the particular use contemplated.

Claims (6)

1. A numerical control mine rope saw main motor supporting plate hole system precision machining process is characterized by comprising the following steps:
s1, obtaining a rough blank motor supporting plate after precision casting and demolding;
s2, carrying out tempering heat treatment on the rough blank motor supporting plate to obtain a heat treatment tray;
s3, carrying out magnetic flaw detection on the heat treatment motor supporting plate, if the heat treatment motor supporting plate is qualified, carrying out milling in the next step, and if the heat treatment motor supporting plate is not qualified, eliminating the heat treatment motor supporting plate and carrying out recasting;
s4, roughly milling a motor bracket, a first side plate and a second side plate of the heat treatment motor supporting plate, and finely milling the upper surface of the motor bracket to obtain a fine blank tray;
s5, the fine blank motor supporting plate takes the upper surface of a motor bracket as a fixed reference, an output shaft hole shaft of a stepping motor and a main motor adjusting and mounting hole shaft are used as positioning references, a cutter is accurately adjusted through an ultra-large diameter-micro lead ratio adjusting screw rod, and two side plates on the side surface of the fine blank motor supporting plate are perforated;
s51, reaming a main motor adjusting installation hole in the side plate by taking the lower surface of the first side plate, the upper surface of the motor bracket and an output shaft hole of the stepping motor as references;
s52, carrying out semi-finish boring on the output shaft hole of the stepping motor by taking two main motor adjusting and mounting holes coaxially corresponding to the two side plates and the upper surface of the motor bracket as references;
s53, carrying out semi-finish boring on the main motor adjusting and mounting hole on the side plate by taking the output shaft hole of the stepping motor and the upper surface of the motor bracket as references;
s54, processing an output shaft hole of the stepping motor by adopting floating fine boring on the basis of two main motor adjusting mounting holes coaxially corresponding to the two side plates and the upper surface of the motor bracket;
s55, carrying out floating fine boring on the main motor adjusting mounting hole on the side plate by taking the output shaft hole of the stepping motor and the upper surface of the motor bracket as a reference;
s56, carrying out finish reaming processing on the output shaft hole of the stepping motor by taking two main motor adjusting mounting holes coaxially corresponding to the two side plates and the upper surface of the motor bracket as references;
and S57, performing fine reaming processing on the main motor adjusting mounting holes on the two side plates by taking the output shaft hole of the stepping motor and the upper surface of the motor bracket as references.
2. The numerical control wire saw main motor support plate hole series precision machining process as claimed in claim 1, wherein the step S52 comprises:
the initial opening size of the holes in the first side plate and the second side plate is R27mm;
the holes in the first side plate and the second side plate are reamed for the first time to be R29mm;
and adjusting the mounting hole by the main motor on the first side plate, and reaming for the second time to reach the size of R42mm.
3. The precision machining process of the main motor supporting plate hole system of the numerical control mine rope saw according to claim 1, characterized by comprising the following steps of: in the step S5, the semi-finish boring is fed to a length of 2mm, the floating finish boring is fed to a length of 1mm, the hole finish-reaming on the second side plate is fed to a length of 1mm, and the hole finish-reaming on the first side plate is fed to a length of 0.5mm.
4. The precision machining process of the main motor supporting plate hole system of the numerical control mine rope saw according to claim 1, characterized by comprising the following steps of: in the step S5, the distance between the axes of the main motor adjusting mounting holes on the first side plate is 500mm, and the two main motor adjusting mounting holes on the first side plate and the two main motor adjusting mounting holes on the second side plate are two sets of coaxial hole systems.
5. The precision machining process of the main motor supporting plate hole system of the numerical control mine rope saw according to claim 1, characterized by comprising the following steps of: in the step S5, the feeding distance between the left side and the right side of the cutter has a difference of 50mm by the inner extension cylinder arranged on the inner side of the second side plate.
6. The precision machining process of the main motor supporting plate hole system of the numerical control mine rope saw according to claim 1, characterized by comprising the following steps of: the floating fine boring in the step S55 adopts a floating single-head precision boring cutter, and the front angle of the cutter head of the boring cutter: γ o = -14 ° -16 °, rear angle: alpha o = 6.5-8 °, main deflection angle:
r = 74-75.5 DEG, auxiliary deflection angle: xr' =13.5 ° to 15 °, blade inclination angle: λ s = -7 ° -9 °.
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CA2630716A1 (en) * 2007-05-08 2008-11-08 Boehler Edelstahl Gmbh Tool with a coating
CN202029245U (en) * 2011-05-10 2011-11-09 山东大学 Six-wheel multiple-rope diamond bead stringing saw

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超大功率绳锯机关键技术研究与设计;梁凤顺;《中国优秀硕士学位论文全文数据库》;20170215;第35页，37页，61页 *

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