CN110712072A

CN110712072A - Non-ferrous metal slide plate thickness grinding machining method

Info

Publication number: CN110712072A
Application number: CN201910853306.4A
Authority: CN
Inventors: 郭军旗; 陈政权; 李锋; 陆安; 王林青
Original assignee: MCC SFRE Heavy Industry Equipment Co Ltd
Current assignee: MCC SFRE Heavy Industry Equipment Co Ltd
Priority date: 2019-09-10
Filing date: 2019-09-10
Publication date: 2020-01-21

Abstract

The invention discloses a thickness grinding processing method of a non-ferrous metal sliding plate, which adopts a mould body and comprises the following steps: step 1) hoisting the mould body on a surface grinding machine workbench by using a magnet sucker, aligning the mould body, magnetizing, and adsorbing and fixing the mould body; step 2) mounting the copper sliding plate in a groove of the tire body, and positioning through a horizontal positioning surface and a vertical positioning surface; fixing the copper sliding plate firmly in the groove of the mould body by using each set screw; and 3) after one surface of the copper sliding plate with the thickness is ground, turning the copper sliding plate for 180 degrees, mounting and clamping the copper sliding plate by using the tire body and the set screw again according to the steps, and grinding the other surface of the copper sliding plate with the thickness. The method of the invention ensures that the processing of the thickness of the copper sliding plate on the hydraulic loop becomes more convenient and reliable, and the tooling has simple structure, convenient process operation and strong practicability.

Description

Non-ferrous metal slide plate thickness grinding machining method

Technical Field

The invention belongs to the technical field of heavy machinery equipment manufacturing, and relates to a thickness grinding processing method for a non-ferrous metal sliding plate.

Background

The non-ferrous metal sliding plate has wide application in the field of mechanical equipment and is an important component of some heavy-load sliding devices. A copper sliding plate on a hydraulic loop is taken as an example for explanation: the thickness tolerance, the form and position tolerance and the surface roughness of the sliding plate are all high (the requirement of the size tolerance is 0.01, the requirement of the planeness and the parallelism is 0.005, and the requirement of the surface roughness is Ra0.2), and the thickness surface is not provided with a handle and a hole, so the requirement of the manufacturing process is also high.

Under the condition of the prior art, the processing method of the copper sliding plate comprises the following steps: the upper milling machine is inconvenient to install and clamp, the pressing plate needs to be moved in series in the machining process, the milling machining can cause the thermal deformation of the copper sliding plate, and a certain thermal deformation can be generated no matter how the control is carried out, so that the copper sliding plate machined by the method always generates a certain deformation, the thickness dimensional tolerance, the form and position tolerance and the surface roughness of the copper sliding plate can not strictly meet the requirements of a drawing, and the copper sliding plate can only be finally scrapped or withdrawn for secondary yielding use.

Disclosure of Invention

The invention aims to provide a thickness grinding processing method of a non-ferrous metal sliding plate, which solves the problems that the conventional method in the prior art is unscientific in process, and the thickness dimensional tolerance, form and position tolerance and surface roughness of the processed copper sliding plate can not strictly meet the requirements of drawings.

The technical scheme adopted by the invention is that the thickness grinding processing method of the non-ferrous metal sliding plate adopts a mould body and is implemented according to the following steps:

step 1) hoisting the mould body on a surface grinding machine workbench by using a magnet sucker, aligning the mould body, magnetizing, and adsorbing and fixing the mould body;

step 2) mounting the copper sliding plate in a groove of the tire body, and positioning through a horizontal positioning surface and a vertical positioning surface; fixing the copper sliding plate firmly in the groove of the mould body by using each set screw;

and 3) after one surface of the copper sliding plate with the thickness is ground, turning the copper sliding plate for 180 degrees, mounting and clamping the copper sliding plate by using the tire body and the set screw again according to the steps, and grinding the other surface of the copper sliding plate with the thickness.

The invention has the beneficial effects that the stability of the qualification rate of the finished product of the copper sliding plate during processing can be obviously improved, the complete qualification of the thickness processing becomes possible, and the overall performance of the hydraulic loop tends to be excellent. By the method, the thickness of the copper sliding plate on the hydraulic loop can be processed more conveniently and reliably, and the tool is simple in structure, convenient to operate and high in practicability.

Drawings

FIG. 1 is a front view of a copper slide plate on a hydraulic looper of a processing object of the present invention;

FIG. 2 is a top view of a copper slide plate on the hydraulic looper of FIG. 1;

FIG. 3 is a left side view of the copper slide plate on the hydraulic looper of FIG. 1;

FIG. 4 is a front view of a mold body for use in the method of the invention;

FIG. 5 is a top view of the tire body of FIG. 4;

FIG. 6 is a front assembly view of a copper slide plate being ground to a thickness using the method of the present invention;

FIG. 7 is a top assembly view of a copper slide plate ground to a thickness using the method of the present invention.

In the figure, 1, a copper sliding plate, 2, a fastening surface, 3, a first positioning surface, 4, a second positioning surface, 5, a third positioning surface, 6, a tire body, 7, a horizontal positioning surface, 8, a vertical positioning surface, 9, a fastening threaded hole, 10, a clearance groove, 11, a positioning supporting surface and 12, a fastening screw.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

According to the method, the fixture body 6 is used as a mounting and positioning tool, and the copper sliding plate 1 is firmly mounted and fixed in the groove of the fixture body 6 through horizontal supporting positioning, vertical positioning and fastening structures.

Referring to fig. 1, a first positioning surface 3 on the copper sliding plate 1 is a reference surface matched with a vertical positioning surface 8 on the tire body 6, and a fastening surface 2 on the copper sliding plate 1 corresponds to a fastening threaded hole 9 on the tire body 6.

Referring to fig. 2, a second positioning surface 4 on the copper sliding plate 1 is a reference surface matched with a horizontal positioning surface 7 on the clamping fixture 6, and a third positioning surface 5 on the copper sliding plate 1 exists as a surface to be ground; and when the copper sliding plate 1 is mounted on the mould body 6 in a turned way by 180 degrees, the positioning surface III 5 is a reference surface matched with the horizontal positioning surface 7 on the mould body 6, and the positioning surface II 4 on the copper sliding plate 1 exists as a surface to be ground.

Referring to fig. 3, the second positioning surface 4 on the copper sliding plate 1 is a key functional surface, which is used as a supporting and positioning reference for grinding the thickness of the copper sliding plate 1 for the first time, and is a positioning reference surface and a horizontal supporting surface, so that relatively strict requirements on form and position accuracy are required between the second positioning surface and the first positioning surface 3.

In fig. 4, the left-right direction is hereinafter referred to as the lateral direction, and the front-back direction is hereinafter referred to as the longitudinal direction.

In fig. 5, the vertical direction is hereinafter referred to as the vertical direction, and the horizontal direction is hereinafter referred to as the horizontal direction.

In fig. 6, the left-right direction is hereinafter referred to as the lateral direction, and the front-back direction is hereinafter referred to as the longitudinal direction.

Referring to fig. 4, 5 and 6, a fixture body 6 adopted by the invention is integrally processed by a thick steel plate, the fixture body 6 has a specific structure that a groove with an upward opening is longitudinally formed on the fixture body 6, recessed clearance grooves 10 are formed at the root parts of two longitudinal sides of the groove (if the clearance grooves 10 at the two sides are ignored, the cross section of the groove is similar to a rectangle), the bottom surface inside the groove is called a horizontal positioning surface 7, the horizontal positioning surface 7 plays a role of a grinding wheel overtravel groove of a grinding machine and is used for supporting and positioning the copper sliding plate 1 in the horizontal direction, and the form and position accuracy of the horizontal positioning surface 7 is favorably ensured so as to meet the requirements of size tolerance and form and position accuracy when the fixture body 6 is used for grinding the thickness on the copper sliding plate 1; the external bottom surface of the tire body 6 is called a supporting and positioning surface 11, and the supporting and positioning surface 11 is used for the adsorption supporting and positioning of the tire body 6 on the surface grinding machine workbench; the inner vertical surface (the left inner vertical surface in fig. 4) of one side of the groove along the longitudinal direction is called a vertical positioning surface 8 and is used for supporting and positioning the copper sliding plate 1 in the vertical direction; the groove is horizontally provided with a plurality of fastening threaded holes 9 (five fastening threaded holes 9 in the embodiment of fig. 5) in parallel along the other vertical surface (the right vertical surface in fig. 4) in the longitudinal direction, and a corresponding fastening screw 12 is arranged in each fastening threaded hole 9 and used for clamping and fixing the copper sliding plate 1 on the tire body 6 when the thickness of the copper sliding plate 1 is ground.

Fig. 5 is a plan view of the mold 6 according to the present invention. The selection of the longitudinal length of the groove, the processing of each positioning surface and each supporting surface, and the arrangement of the long direction of each fastening threaded hole 9 mainly take the functional requirements into consideration; the total thickness and the total width of the clamping fixture 6 are selected, and the size and the position of the diameter of each fastening threaded hole 9 need to be comprehensively considered for the dual requirements of the structural rigidity and the functionality.

The tool set provided by the invention not only considers a plurality of factors such as structural rigidity, functional requirements, dimensional tolerance, surface roughness requirements, safety and reliability, but also has adaptive shape and position precision requirements aiming at the requirements of higher dimensional tolerance, shape and position precision and surface roughness finally to be achieved in the thickness grinding processing of the copper sliding plate.

Referring to fig. 6 and 7, the method of the invention is a front view assembly drawing for grinding the thickness of the copper sliding plate by using the tire body 6, and the method is implemented according to the following steps:

step 1) hoisting a mould body 6 on a surface grinding machine workbench by using a magnet sucker, aligning the mould body 6, magnetizing, and adsorbing and fixing the mould body 6;

step 2), mounting the copper sliding plate 1 in a groove of the tire body 6, and positioning through a horizontal positioning surface 7 and a vertical positioning surface 8; then, fixing the copper sliding plate 1 in the groove of the mould body 6 firmly by using each set screw 12; when the set screws 12 are fastened, a torque wrench is needed, and mutual adjustment and coordination are needed, so that the stress of each set screw 12 is balanced and the tightness is proper, and the phenomenon that a gap is formed between the copper sliding plate 1 and each positioning surface of the clamping fixture 6 due to uneven stress or overlarge or undersize stress of the copper sliding plate 1 is prevented;

and 3) grinding one surface (if the positioning surface II 4 is used as a supporting surface, grinding the positioning surface III 5 firstly) of the copper sliding plate 1, turning the copper sliding plate 1 over 180 degrees, re-using the tire body 6 and the set screw 12 to clamp the copper sliding plate 1 again according to the steps, and grinding the other surface (the positioning surface II 4) of the copper sliding plate 1.

After the copper sliding plate 1 is positioned and fixed with the clamping fixture body 6 through the set screw 12, the surface to be ground of the thickness of the copper sliding plate 1 can be ground on a plane grinding machine. During grinding, semi-finish grinding and finish grinding are required to be carried out separately, sufficient cooling is required to be carried out on the sufficient cutting fluid, and reasonable and appropriate grinding parameters are required to be selected so as to prevent the copper sliding plate 1 from deforming due to insufficient cooling or unreasonable selected grinding parameters in the grinding process.

The tool adopted by the method has a simple structure, the actual operation process is convenient, the manufacturability is good, the practicability is strong, the thermal deformation generated in the thickness processing process of the hydraulic loop copper sliding plate is greatly reduced, and the grinding processing is adopted, so that the thickness dimensional tolerance, the form and position precision and the surface roughness of the hydraulic loop copper sliding plate strictly meet the requirements of a drawing, the working precision, the stability and the service life of the whole hydraulic loop are obviously improved, and the rejection rate and the yield rate of the copper sliding plate in the manufacturing process are greatly reduced by utilizing the thickness of the copper sliding plate ground by the method, so that the method brings good economic benefits and is worthy of popularization and wide application.

Claims

1. The method for grinding the thickness of the non-ferrous metal sliding plate is characterized by comprising the following steps of:

step 1), hoisting a tire body (6) on a surface grinding machine workbench by using a magnet sucker, aligning the tire body (6), magnetizing, and adsorbing and fixing the tire body (6);

step 2), mounting the copper sliding plate (1) in a groove of the tire body (6), and positioning through a horizontal positioning surface (7) and a vertical positioning surface (8); then, fixing the copper sliding plate (1) in the groove of the mould body (6) firmly by using each set screw (12);

and 3) after one surface of the copper sliding plate (1) is ground, turning the copper sliding plate (1) for 180 degrees, mounting the copper sliding plate (1) by using the fixture body (6) and the set screw (12) again according to the steps, and grinding the other surface of the copper sliding plate (1) in thickness.

2. The method for grinding the thickness of a nonferrous metal slide plate according to claim 1, wherein: the mould body (6) is structurally characterized in that a groove with an upward opening is formed in the mould body (6) along the longitudinal direction, concave clearance grooves (10) are formed in the root parts of two longitudinal sides of the groove, and the bottom surface inside the groove is called a horizontal positioning surface (7).

3. The method for grinding the thickness of a non-ferrous metal sliding plate according to claim 2, wherein: the outer bottom surface of the mould body (6) is called a supporting and positioning surface (11), the inner vertical surface of one longitudinal side of the groove is called a vertical positioning surface (8), the vertical surface of the other longitudinal side of the groove is horizontally provided with a plurality of fastening threaded holes (9) side by side, and each fastening threaded hole (9) is provided with a corresponding fastening screw (12).

4. The method for grinding the thickness of a nonferrous metal slide plate according to claim 1, wherein: in the step 2, a torque wrench is used for fastening the set screw (12).

5. The method for grinding the thickness of a nonferrous metal slide plate according to claim 1, wherein: in the step 3, the semi-finish grinding and the finish grinding are separately carried out during grinding, the foot cutting fluid is sufficiently cooled, and reasonable and appropriate grinding parameters are selected to prevent the copper sliding plate (1) from deforming due to insufficient cooling or unreasonable selected grinding parameters in the grinding process.