CN101947672A - Method for manufacturing profiled hole shaft sleeve with logarithmic concavity through electrochemical machining technology - Google Patents

Abstract

The invention discloses a method for manufacturing a profiled hole shaft sleeve with logarithmic concavity through the electrochemical machining technology, which comprises the following steps of: preparing a cathode bar with logarithmic concavity, wherein the interior part of the cathode bar is a metal core, and the exterior part is a metal plating layer; coaxially installing a shaft sleeve before profiling and the cathode bar, placing the shaft sleeve and the cathode bar in a water base electrolyte of an electrolyte, and controlling the gap between the shaft sleeve and the cathode sleeve; connecting the shaft sleeve with the positive pole of a DC power supply, and connecting the cathode bar with the negative pole of the DC power supply; starting a pump to enable the electrolyte to flow across the gap between the shaft sleeve and the cathode bar; and switching on the power supply to start processing. The method can avoid the difficulty of machining on the profiled hole shaft sleeve with logarithmic concavity, and a profiled hole shaft sleeve with any given logarithmic concavity can be manufactured only by replacing different cathode bars; the cathode bar has no abrasion loss because of no direct contact with the shaft sleeve during the process for manufacturing the profiled hole shaft sleeve with logarithmic concavity, so that the processability of the cathode bar can be ensured after multiple uses, and the processing accuracy is not influenced. Thus, a simple, convenient, practical and economical method is provided for manufacturing the profiled hole shaft sleeve with logarithmic concavity.

Description

The electrochemistry process technology is made the method for logarithm concavity correction of the flank shape hole axle sleeve

Technical field

The present invention relates to a kind of method of making logarithm concavity correction of the flank shape hole axle sleeve, especially relate to the method that a kind of electrochemistry process technology is made logarithm concavity correction of the flank shape hole axle sleeve.

Background technology

The electrochemistry process technology has been widely used in the processing of component of machine, can be divided into electroplating processing and Electrolyzed Processing, and Electrolyzed Processing is meant anodic-cathodic when energising, and anode workpiece is dissolved according to the shape of tool cathode, thereby obtains required shape.But this technology is still waiting development in the application aspect the axle sleeve correction of the flank shape.

There is the interaction of limit for width sliding bearing axle sleeve and axle journal to cause concentrating at sleeve end generation stress, thus the wear-out life and the fatigue life of having reduced sliding bearing.Can reduce this stress after the correction of the flank shape of axle sleeve hole process logarithm concavity and concentrate, thus bearing capacity and the fatigue life that can improve sliding bearing.But the correction of the flank shape of present this axle sleeve hole logarithm concavity also is difficult to realize by machining, causes this axle sleeve with superperformance to be widely used in the engineering practice.

Summary of the invention

The object of the present invention is to provide a kind of electrochemistry process technology to make the method for logarithm concavity correction of the flank shape hole axle sleeve, avoiding the difficulty of machining logarithm concavity correction of the flank shape hole axle sleeve, thereby provide a kind of easy and practical method for making logarithm concavity correction of the flank shape hole axle sleeve.

The step of the technical method that the present invention adopts is as follows:

(1) preparation of cathode bar: cathode bar has logarithm concavity, and its inside is metal-cored, and the outside is the coat of metal, and coating material is the metal that chemical activity is lower than copper, and metal layer thickness is 0.5～1.5mm;

(2) axle sleeve and the coaxial installation of above-mentioned cathode bar before the correction of the flank shape, placing electrolyte quality concentration is 10%～20% water base electrolyte, preceding axle sleeve and the gap between the cathode bar of control correction of the flank shape is 0.1～1mm;

(3) axle sleeve before the correction of the flank shape is connect the positive pole of 10～24V dc source, cathode bar connects the negative pole of this dc source;

(4) start pump make electrolyte stream before correction of the flank shape axle sleeve and cathode bar between the flow velocity in gap be 6～30m/s;

(5) connect above-mentioned power supply, electrochemistry processing beginning, be given by the following formula the conduction time of electrochemistry processing:

v _a＝ηωi； $i=k\frac{U_R}{\mathrm{\Δ}};$

U _R＝U-δE； $t=\frac{h}{v_a}$

In the formula: v _aBe the axle sleeve electrochemistry process velocity before the correction of the flank shape, cm/s; η current efficiency; ω is the volume electrochemical equivalent, cm ³/ Amin; I is a current density, A/cm ²K is the electrolyte conductance, 1/ Ω cm; Δ is an interelectrode gap, mm; U _RBe the voltage drop in axle sleeve before the correction of the flank shape and the cathode bar gap electrolyte, V; U is preceding axle sleeve of correction of the flank shape and the voltage between the cathode bar, V; Axle sleeve and cathode bar electrode potential value summation when δ E is Electrolyzed Processing before the correction of the flank shape, V; T is axle sleeve electrochemistry process time, second; H is the profiling quantity of the axle sleeve hole surface normal before the correction of the flank shape, mm.

Described water base electrolyte is NaNO ₃Solution, NaCl solution or NaClO ₃Solution.

Its bus of described cathode bar has logarithm concavity, and the inner concave curve formula of its bus is:

$T\left(x\right)=\left\{\begin{array}{cc}\frac{2K_{1}Q}{\mathrm{\&pi;l}{E}^{\&prime;}}\mathrm{<figure-callout\; id="1"\; label="ln"\; filenames="HSA00000256322700011.png"\; state="\{\{state\}\}">ln</figure-callout>}\frac{1}{1-[1-\exp (-\frac{z_m\mathrm{\&pi;l}{E}^{\&prime;}}{2K_{1}Q})]{(\frac{-x-a}{K_{2}a}+1)}^2}& -a\&le;x<-K_{2}a\\ 0& -K_{2}a\&le;x<K_{2}a\\ \frac{2K_{1}Q}{\mathrm{\&pi;l}{E}^{\&prime;}}\mathrm{<figure-callout\; id="1"\; label="ln"\; filenames="HSA00000256322700011.png"\; state="\{\{state\}\}">ln</figure-callout>}\frac{1}{1-[1-\exp (-\frac{z_m\mathrm{\&pi;l}{E}^{\&prime;}}{2K_{1}Q})]{(\frac{x-a}{K_{2}a}+1)}^2}& K_{2}a\&le;x\&le;a\end{array}\right.$

In the formula: K ₁-loading coefficient; K ₂The ratio of-correction of the flank shape length and effective contact length; Q-load, kN; The l-bearing width, mm; The elastic constant of E '-contact, GPa; A-bearing half width, mm; The value of x-bearing width direction, mm; z _mThe profiling quantity of-sliding bearing end, mm; T (x)-dead eye convex value, m.

The beneficial effect that the present invention has is:

1, the method for this electrochemistry process technology manufacturing logarithm concavity correction of the flank shape hole axle sleeve can be avoided the difficulty of machining logarithm concavity correction of the flank shape hole axle sleeve, thereby makes this axle sleeve become actual product from the theory design.

2, this method only need be changed different negative electrodes and can produce given logarithm concavity correction of the flank shape hole axle sleeve arbitrarily by rod, thereby manufacture process is simplified, and also can reduce manufacturing cost.

3, using this method to make in the process of logarithm concavity correction of the flank shape hole axle sleeve, cathode bar does not directly contact with axle sleeve, so cathode bar do not have attrition, thereby repeatedly still guaranteeing its processing characteristics after the use, does not influence machining accuracy.Thereby provide a kind of simple, practical, economic method for making logarithm concavity correction of the flank shape hole axle sleeve.

Description of drawings

Fig. 1 is the schematic diagram that the electrochemistry process technology is made logarithm concavity correction of the flank shape hole axle sleeve.

Fig. 2 is the sliding bearing axle sleeve structure Parameter Map before the correction of the flank shape in the instantiation.

Fig. 3 is the structural representation of cathode bar.

Fig. 4 is the enlarged diagram of the axle sleeve hole bus after the correction of the flank shape in the instantiation.

Among the figure: 1, dc source; 2, the axle sleeve before the correction of the flank shape; 3, electrolyte; 4, cathode bar; 5, the axle sleeve hole bus after the correction of the flank shape; 6, seal diaphragm; 7, the coat of metal.

The specific embodiment

The present invention is further illustrated below in conjunction with accompanying drawing and instantiation.

A kind of as shown in Figure 1 electrochemistry process technology is made the method for logarithm concavity correction of the flank shape hole axle sleeve, and the step of this method is as follows:

(1) preparation of cathode bar: cathode bar 4 has logarithm concavity, and its inside is metal-cored, and as steel, copper etc., the outside is the coat of metal 7, and coating material is the metal that chemical activity is lower than copper, and as silver or golden, metal layer thickness is 0.5～1.5mm, as shown in Figure 3;

(2) axle sleeve 2 and above-mentioned cathode bar 1 coaxial installation before the correction of the flank shape, placing electrolyte quality concentration is 10%～20% water base electrolyte 3, preceding axle sleeve 2 and the gap between the cathode bar 4 of control correction of the flank shape is 0.1～1mm;

(3) axle sleeve before the correction of the flank shape 2 is connect the positive pole of 10～24V dc source 1, cathode bar connects the negative pole of this dc source 1;

(4) start pump, under the partition effect of seal diaphragm 6, electrolyte 3 is flowed through, and the flow velocity in gap is 6～30m/s between axle sleeve before the correction of the flank shape and the cathode bar;

(5) connect above-mentioned power supply, electrochemistry processing beginning, be given by the following formula the conduction time of electrochemistry processing:

v _a＝ηωi； $i=k\frac{U_R}{\mathrm{\&Delta;}};$

U _R＝U-δE； $t=\frac{h}{v_a}$

In the formula: v _aBe the axle sleeve electrochemistry process velocity before the correction of the flank shape, cm/s; η current efficiency; ω is the volume electrochemical equivalent, cm ³/ Amin; I is a current density, A/cm ²K is the electrolyte conductance, 1/ Ω cm; Δ is an interelectrode gap, mm; U _RBe the voltage drop in axle sleeve before the correction of the flank shape and the cathode bar gap electrolyte, V; U is preceding axle sleeve of correction of the flank shape and the voltage between the cathode bar, V; Axle sleeve and cathode bar electrode potential value summation when δ E is Electrolyzed Processing before the correction of the flank shape, V; T is axle sleeve electrochemistry process time, second; H is the profiling quantity of the axle sleeve hole surface normal before the correction of the flank shape, mm.The processing back forms the axle sleeve hole bus 5 after the correction of the flank shape.

Described water base electrolyte is NaNO ₃Solution, NaCl solution or NaClO ₃Solution.

Sliding bearing axle sleeve among the embodiment before the correction of the flank shape as shown in Figure 2, axle sleeve is wide to be 10mm, external diameter is 28mm, the axle sleeve aperture is 25mm.The convex that the Fujiwara of the Japanese NTN of this example employing company and Kawase proposed in 2006, convex formula following (this convex formula is applied to be among the present invention spill):

$T\left(x\right)=\left\{\begin{array}{cc}\frac{2K_{1}Q}{\mathrm{\&pi;l}{E}^{\&prime;}}\mathrm{<figure-callout\; id="1"\; label="ln"\; filenames="HSA00000256322700011.png"\; state="\{\{state\}\}">ln</figure-callout>}\frac{1}{1-[1-\exp (-\frac{z_m\mathrm{\&pi;l}{E}^{\&prime;}}{2K_{1}Q})]{(\frac{-x-a}{K_{2}a}+1)}^2}& -a\&le;x<-K_{2}a\\ 0& -K_{2}a\&le;x<K_{2}a\\ \frac{2K_{1}Q}{\mathrm{\&pi;l}{E}^{\&prime;}}\mathrm{<figure-callout\; id="1"\; label="ln"\; filenames="HSA00000256322700011.png"\; state="\{\{state\}\}">ln</figure-callout>}\frac{1}{1-[1-\exp (-\frac{z_m\mathrm{\&pi;l}{E}^{\&prime;}}{2K_{1}Q})]{(\frac{x-a}{K_{2}a}+1)}^2}& K_{2}a\&le;x\&le;a\end{array}\right.$

In the formula, K ₁-loading coefficient; K ₂The ratio of-correction of the flank shape length and effective contact length; Q-load, kN; L-axle sleeve width, mm; The elastic constant of E '-contact, GPa; A-axle sleeve half width, mm; The value of x-axle sleeve width, mm; z _mThe profiling quantity of-sliding bearing sleeve end, mm; T (x)-axle sleeve hole convex value, m.

Get K ₁=2.779, K ₂=0.5, Q=10kN, l=10mm, E '=226GPa, a=5mm, z _m=16.253 * 10 ^-3Mm.Trying to achieve profiling quantity thus is

${\mathrm{\&delta;}}^{\&prime;}\left(x\right)=\left\{\begin{array}{cc}7.903\&times;{10}^{-3}\mathrm{<figure-callout\; id="1"\; label="ln"\; filenames="HSA00000256322700011.png"\; state="\{\{state\}\}">ln</figure-callout>}\frac{1}{1-0.875\&times;{(0.4x+1)}^2}& -5\&le;x<-2.5\\ 0& -2.5\&le;x<2.5\\ 7.903\&times;{10}^{-3}\mathrm{<figure-callout\; id="1"\; label="ln"\; filenames="HSA00000256322700011.png"\; state="\{\{state\}\}">ln</figure-callout>}\frac{1}{1-0.875\&times;{(0.4x-1)}^2}& 2.5\&le;x\&le;5\end{array}\right.$

In view of the above, get the profiling quantity h=0.517mm of the preceding axle sleeve hole surface normal of correction of the flank shape.Cathode bar inside is general copper core, and the outside is a silvering, and thickness of coating is taken as 1mm.

Embodiment 1:

Axle sleeve and the coaxial installation of above-mentioned cathode bar before the correction of the flank shape, placing mass concentration is 10% NaCl electrolyte, making preceding axle sleeve of correction of the flank shape and the gap between the above-mentioned cathode bar is 1mm, is Δ.By pump make electrolyte stream before correction of the flank shape axle sleeve and above-mentioned cathode bar between the flow velocity in gap be 20m/s.Axle sleeve before the correction of the flank shape is connect the positive pole of dc source 12V, and above-mentioned cathode bar connects the negative pole of this dc source.Start pump, connect above-mentioned power supply again, electrochemistry processing beginning.Be given by the following formula the conduction time of electrochemistry processing:

v _a＝ηωi； $i=k\frac{U_R}{\mathrm{\&Delta;}};$

U _R＝U-δE； $t=\frac{h}{v_a}$

In the formula: v _aBe axle sleeve electrochemistry process velocity (cm/s); η current efficiency; I is current density (A/cm ²); K is electrolyte conductance (1/ Ω cm); Δ is interelectrode gap (mm); U _RBe the voltage drop (V) in axle sleeve before the correction of the flank shape and the cathode bar gap electrolyte; U is axle sleeve and the voltage between the cathode bar (V) before the correction of the flank shape; Axle sleeve and cathode bar electrode potential value summation (V) when δ E is Electrolyzed Processing before the correction of the flank shape; T is axle sleeve electrochemistry process time; H is the profiling quantity (mm) of the axle sleeve hole surface normal before the correction of the flank shape.

Material, axle sleeve is based on copper, and the electrode potential that checks in copper is 0.340V, and the electrode potential of silver is 0.7996V, i.e. δ E=1.1396V, U _R=10.8604V, mass concentration is that 10% NaCl electrolyte current efficiency η is taken as 70%, and Δ is 1mm, and used mass concentration is 10% NaCl electrolyte conductance k=0.206 (1/ Ω cm), by Get current density i=22.4A/cm ², volume electrochemical equivalent ω=0.0033cm ³/ Amin, thus can be regarded as v _a=0.008624mm/s, t=60.0s process time obtains switching on.

As shown in Figure 1, axle sleeve 2 coaxial installations before cathode bar 4 and the correction of the flank shape place electrolyte 3, leaving the gap between the axle sleeve 2 before cathode bar 4 (as shown in Figure 3) and the correction of the flank shape is 1mm, cathode bar 4 connects power cathode, and the axle sleeve 2 before the correction of the flank shape connects positive source, starts pump, make electrolyte stream before correction of the flank shape axle sleeve and above-mentioned cathode bar between the flow velocity in gap be 20m/s, connect above-mentioned power supply again, behind the energising 60.0s, machine.

Embodiment 2:

Axle sleeve and the coaxial installation of above-mentioned cathode bar before the correction of the flank shape, placing mass concentration is 15% NaClO ₃In the electrolyte, making preceding axle sleeve of correction of the flank shape and the gap between the above-mentioned cathode bar is 1mm, is Δ.By pump make electrolyte stream before correction of the flank shape axle sleeve and above-mentioned cathode bar between the flow velocity in gap be 30m/s.Axle sleeve before the correction of the flank shape is connect the positive pole of dc source 24V, and above-mentioned cathode bar connects the negative pole of this dc source.Start pump, connect above-mentioned power supply again, electrochemistry processing beginning.Be given by the following formula the conduction time of electrochemistry processing:

v _a＝ηωi； $i=k\frac{U_R}{\mathrm{\&Delta;}};$

U _R＝U-δE； $t=\frac{h}{v_a}$

In the formula: v _aBe axle sleeve electrochemistry process velocity (cm/s); η current efficiency; I is current density (A/cm ²); K is electrolyte conductance (1/ Ω cm); Δ is interelectrode gap (mm); U _RBe the voltage drop (V) in axle sleeve before the correction of the flank shape and the cathode bar gap electrolyte; U is axle sleeve and the voltage between the cathode bar (V) before the correction of the flank shape; Axle sleeve and cathode bar electrode potential value summation (V) when δ E is Electrolyzed Processing before the correction of the flank shape; T is axle sleeve electrochemistry process time; H is the profiling quantity (mm) of the axle sleeve hole surface normal before the correction of the flank shape.

Material, axle sleeve is based on copper, and the electrode potential that checks in copper is 0.340V, and the electrode potential of silver is 0.7996V, i.e. δ E=1.1396V, U _R=22.8604V, mass concentration is 15% NaClO ₃Electrolyte current efficiency η is taken as 85%, and Δ is 1mm, and used mass concentration is 15% NaClO ₃Electrolyte conductance k=0.088 (1/ Ω cm), by

Get current density i=20.1A/cm ², volume electrochemical equivalent ω=0.0033cm ³/ Amin, thus can be regarded as v _a=0.009397mm/s, t=55.0s process time obtains switching on.

As shown in Figure 1, axle sleeve 2 coaxial installations before cathode bar 4 and the correction of the flank shape place electrolyte 3, leaving the gap between the axle sleeve 2 before cathode bar 4 (as shown in Figure 3) and the correction of the flank shape is 1mm, cathode bar 4 connects power cathode, and the axle sleeve 2 before the correction of the flank shape connects positive source, starts pump, make electrolyte stream before correction of the flank shape axle sleeve and above-mentioned cathode bar between the flow velocity in gap be 30m/s, connect above-mentioned power supply again, behind the energising 55.0s, machine.

Embodiment 3:

Axle sleeve and the coaxial installation of above-mentioned cathode bar before the correction of the flank shape place 20% NaNO ₃In the electrolyte, making correction of the flank shape preceding axle sleeve and the gap between the above-mentioned cathode bar is 1mm (being Δ).By pump make electrolyte stream before correction of the flank shape axle sleeve and above-mentioned cathode bar between the flow velocity in gap be 20m/s.Axle sleeve before the correction of the flank shape is connect the positive pole of dc source (10V), and above-mentioned cathode bar connects the negative pole of this dc source.Start pump, connect above-mentioned power supply again, electrochemistry processing beginning.Be given by the following formula the conduction time of electrochemistry processing:

v _a＝ηωi； $i=k\frac{U_R}{\mathrm{\&Delta;}};$

U _R＝U-δE； $t=\frac{h}{v_a}$

In the formula: v _aBe axle sleeve electrochemistry process velocity (cm/s); η current efficiency; I is current density (A/cm ²); K is electrolyte conductance (1/ Ω cm); Δ is interelectrode gap (mm); U _RBe the voltage drop (V) in axle sleeve before the correction of the flank shape and the cathode bar gap electrolyte; U is axle sleeve and the voltage between the cathode bar (V) before the correction of the flank shape; Axle sleeve and cathode bar electrode potential value summation (V) when δ E is Electrolyzed Processing before the correction of the flank shape; T is axle sleeve electrochemistry process time; H is the profiling quantity (mm) of the axle sleeve hole surface normal before the correction of the flank shape.

Material, axle sleeve is based on copper, and the electrode potential that checks in copper is 0.340V, and the electrode potential of silver is 0.7996V, i.e. δ E=1.1396V, U _R=8.8604V, 20% NaNO ₃Electrolyte current efficiency η generally is higher than 80%, is taken as 90%, and Δ is 1mm, used 20% NaNO ₃Electrolyte conductance k=0.171 (1/ Ω cm), by

Get current density i=15.2A/cm ², volume electrochemical equivalent ω=0.0033cm ³/ Amin, thus can be regarded as v _a=0.006688mm/s, t=77.3s process time obtains switching on.

As shown in Figure 1, axle sleeve 2 coaxial installations before cathode bar 4 and the correction of the flank shape place electrolyte 3, leaving the gap between the axle sleeve 2 before cathode bar 4 (as shown in Figure 3) and the correction of the flank shape is 1mm, cathode bar 4 connects power cathode, axle sleeve 2 before the correction of the flank shape connects positive source, starts pump, make electrolyte stream before correction of the flank shape axle sleeve and above-mentioned cathode bar between the flow velocity in gap be that 25m/s connects above-mentioned power supply again, behind the energising 77.3s, machine.

Three embodiment obtain this axle sleeve hole bus modification curve as shown in Figure 4 after the correction of the flank shape.

Claims (3)

1. an electrochemistry process technology is made the method for logarithm concavity correction of the flank shape hole axle sleeve, it is characterized in that the step of this method is as follows:

(1) preparation of cathode bar: cathode bar has logarithm concavity, and its inside is metal-cored, and the outside is the coat of metal, and coating material is the metal that chemical activity is lower than copper, and metal layer thickness is 0.5～1.5mm;

(2) axle sleeve and the coaxial installation of above-mentioned cathode bar before the correction of the flank shape, placing electrolyte quality concentration is 10%～20% water base electrolyte, preceding axle sleeve and the gap between the cathode bar of control correction of the flank shape is 0.1～1mm;

(3) axle sleeve before the correction of the flank shape is connect the positive pole of 10～24V dc source, cathode bar connects the negative pole of this dc source;

(4) start pump make electrolyte stream before correction of the flank shape axle sleeve and cathode bar between the flow velocity in gap be 6～30m/s;

(5) connect above-mentioned power supply, electrochemistry processing beginning, be given by the following formula the conduction time of electrochemistry processing:

v _a＝ηωi； $i=k\frac{U_R}{\mathrm{\&Delta;}};$

U _R＝U-δE； $t=\frac{h}{v_a}$

In the formula: v _aBe the axle sleeve electrochemistry process velocity before the correction of the flank shape, cm/s; η current efficiency; ω is the volume electrochemical equivalent, cm ³/ Amin; I is a current density, A/cm ²K is the electrolyte conductance, 1/ Ω cm; Δ is an interelectrode gap, mm; U _RBe the voltage drop in axle sleeve before the correction of the flank shape and the cathode bar gap electrolyte, V; U is preceding axle sleeve of correction of the flank shape and the voltage between the cathode bar, V; Axle sleeve and cathode bar electrode potential value summation when δ E is Electrolyzed Processing before the correction of the flank shape, V; T is axle sleeve electrochemistry process time, second; H is the profiling quantity of the axle sleeve hole surface normal before the correction of the flank shape, mm.

2. a kind of electrochemistry process technology according to claim 1 is made the method for logarithm concavity correction of the flank shape hole axle sleeve, and it is characterized in that: described water base electrolyte is NaNO ₃Solution, NaCl solution or NaClO ₃Solution.

3. a kind of electrochemistry process technology according to claim 1 is made the method for logarithm concavity correction of the flank shape hole axle sleeve, and it is characterized in that: its bus of described cathode bar has logarithm concavity, and the inner concave curve formula of its bus is:

$T\left(x\right)=\left\{\begin{array}{cc}\frac{2K_{1}Q}{\mathrm{\&pi;l}{E}^{\&prime;}}\ln \frac{1}{1-[1-\exp (-\frac{z_m\mathrm{\&pi;l}{E}^{\&prime;}}{2K_{1}Q})]{(\frac{-x-a}{K_{2}a}+1)}^2}& -a\&le;x<-K_{2}a\\ 0& -K_{2}a\&le;x<K_{2}a\\ \frac{2K_{1}Q}{\mathrm{\&pi;l}{E}^{\&prime;}}\ln \frac{1}{1-[1-\exp (-\frac{z_m\mathrm{\&pi;l}{E}^{\&prime;}}{2K_{1}Q})]{(\frac{x-a}{K_{2}a}+1)}^2}& K_{2}a\&le;x\&le;a\end{array}\right.$

In the formula: K ₁-loading coefficient; K ₂The ratio of-correction of the flank shape length and effective contact length; Q-load, kN; The l-bearing width, mm; The elastic constant of E '-contact, GPa; A-bearing half width, mm; The value of x-bearing width direction, mm; z _mThe profiling quantity of-sliding bearing end, mm; T (x)-dead eye convex value, m.

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