CN102410306B - Linear slider and manufacturing method thereof - Google Patents

Abstract

A linear slider and a manufacturing method thereof, in the manufacturing process, firstly, a slider with a plurality of grooves is provided; then, a groove extending along the groove is formed in each groove, so that the groove is separated by the groove to form two curved surfaces, and a non-grinding area and a grinding area are defined in the groove by the groove and the two curved surfaces respectively; finally, the groove is ground with a grinding tool to complete the manufacturing of the linear slider. The grinding tool contacts the grinding area but does not contact the non-grinding area, which can reduce the friction resistance between the grinding tool and the groove, thereby increasing the grinding rate.

Description

Linear slider and manufacturing method thereof

technical field

The invention relates to a slider, in particular to a linear slider and a manufacturing method thereof.

Background technique

The quality of machine tools produced by domestic manufacturers has been affirmed by users in recent years and has a certain status in the world. The export value of machine tools has reached the fifth place in the world; in order to strengthen the competitiveness of products, it is an inevitable trend to propose more precise and high-speed operation technologies. The transmission mechanism in the machine tool is its core. There are many ways to actuate the transmission mechanism, among which the linear transmission system is the most common. Among various linear transmission systems, linear guides are the most common, and are widely used in various machine tools or other automated industrial production equipment.

A general linear slide rail system includes a long moving slide rail and a linear slide block arranged on the slide rail. At the same time, a slide groove and a ball circulation system are arranged on the linear slide block. The linear slider is fitted on the slide rail with a chute, and a plurality of balls of the ball circulation system are in contact between the linear slider and the slide rail, so that the linear slider can pass the balls on the slide rail along the direction of the slide rail. Move back in the direction of the central axis. Among them, the linear slider is provided with a return channel and a ball channel for accommodating balls. The return channel runs through the opposite sides of the linear slider, and the ball channel is a semi-arc groove set in the chute of the linear slider. , a plurality of balls are disposed between the return channel and the ball channel in a circular manner. Therefore, when the linear slider fits on the slide rail, a plurality of balls located in the ball channel contact the contact surface of the slide rail, so as to clamp the linear slider and the slide rail through the contact surface of the ball channel and the slide rail. Between the rails, it is used as a medium for the linear slider to slide relative to the slide rail.

At present, in the manufacture of linear slide rails, the slide rail body is usually subjected to a series of processes such as rough grinding, cutting, forging, shape modification, broaching, tube hole processing, heat treatment, shape initial grinding, and grinding. , forming a chute, a return channel and a ball channel on the slide rail body. Wherein, since the function of the ball channel is to enable the balls to move smoothly on the slide rail and the linear slider, the requirements for the smoothness (or precision) of the surface of the ball channel are very strict. Therefore, in the final grinding process stage, a grinding tool is inserted into the chute, so that the ball channel is in contact with the grinding tool, and accompanied by precise grinding at a certain speed, in order to obtain fine surface smoothness.

However, during the grinding process, since the inner wall surface of the ball channel must completely contact the grinding tool, the contact area between the two is too large and there is considerable friction resistance, which often causes the grinding tool to wear in the ball channel Speed cannot be increased. Moreover, after a period of grinding operation, it is easy to generate high-temperature heat due to the friction between the grinding tool and the ball channel, thereby reducing the service life of the grinding tool and causing structural disintegration of the linear slider from the position of the ball channel. At the same time, due to the close contact between the grinding tool and the ball channel, it is impossible to provide a proper cooling mechanism between the grinding tool and the ball channel. Therefore, there is still room for improvement in the current structural design of the linear slider to overcome the above-mentioned problems.

Contents of the invention

In view of the above problems, the technical problem to be solved by the present invention is to provide a linear slider and its manufacturing method, so as to improve the problems that the existing linear slider cannot increase the wear speed and cannot effectively provide a cooling mechanism during the grinding process. .

In order to achieve the above object, the present invention discloses a linear slider, which has a chute, and has at least one groove on opposite sides of the chute respectively. There are two curved surfaces and a ditch in the groove, and the two curved surfaces are in the groove. A grinding area is defined in the groove, and a non-abrasive area is defined in the groove by the trench. The two curved surfaces have the same center of curvature, the ditch is arranged between the two curved surfaces and extends along the groove, and the distance from the center of curvature of the two curved surfaces to the ditch is greater than the radius of curvature of the two curved surfaces.

In order to achieve the above object, the present invention also discloses a method for manufacturing a linear slider, the steps of which include: providing a slider body, the slider body has a chute, and the opposite sides of the chute have at least one groove respectively ; Next, form a ditch in the groove, the ditch extends along the groove to form two curved surfaces in the groove, the two curved surfaces define a grinding area in the groove, and the ditch defines a non-abrasive area in the groove; And grinding the groove with a grinding tool, wherein the groove is in contact with the grinding tool with the grinding area, and the non-grinding area avoids the grinding tool, and there is a gap between the grinding tool and the grinding tool.

The effect of the present invention is that the grooves provided in the grooves of the linear slider can reduce the contact area between the grinding tool and the groove, so as to increase the wear rate of the grinding tool on the groove. At the same time, during the grinding process, the cooling fluid such as cooling liquid or lubricating liquid is provided through the ditch to flow into the groove, which can provide cooling for the grinding tool and the slider body, so as to prevent the grinding tool and the slider body from being generated due to high temperature. damage, and at the same time, the wear rate of the grinding tool can be further improved.

The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments, but not as a limitation of the present invention.

Description of drawings

Fig. 1 is the combination schematic diagram of the first embodiment of the present invention;

2A is a schematic plan view of a linear slider according to a first embodiment of the present invention;

2B is a partially enlarged schematic diagram of a linear slider according to the first embodiment of the present invention;

Fig. 3 is the manufacturing flowchart of the linear slider of the first embodiment of the present invention;

4 is a flow chart of forming a trench opening according to the first embodiment of the present invention;

Fig. 5 is a partially enlarged schematic view of the groove of the first embodiment of the present invention;

6 is a schematic plan view of a grinding tool in contact with a groove according to the first embodiment of the present invention;

7 is a schematic plan view of a linear slider according to a second embodiment of the present invention;

Fig. 8 is a partially enlarged schematic view of a groove of a second embodiment of the present invention;

FIG. 9 is a flow chart of forming trench openings according to the second embodiment of the present invention.

Among them, reference signs

10 linear sliders

110 chute

111 Groove

112 first surface

113 second surface

114 ditch

120 ball circulation system

121 ball

130 return channels

140 slider body

20 end caps

30 oil supply components

40 linear slides

50 grinding tools

510 grinding block

O center of curvature

r radius of curvature

L1 first reference line

L2 second reference line

L3 third reference line

L4 fourth reference line

L5 fifth reference line

θ23 Angle between the second reference line and the third reference line

θ24 Angle between the second reference line and the fourth reference line

θ34 Angle between the third reference line and the fourth reference line

θ35 Angle between the third reference line and the fifth reference line

Detailed ways

Below in conjunction with accompanying drawing, structural principle and working principle of the present invention are specifically described:

Please refer to Fig. 1, Fig. 2A and Fig. 2B, the opposite sides of the linear slider 10 disclosed in the first embodiment of the present invention are respectively provided with end caps 20, and one of the end caps 20 is combined with the oil supply assembly 30, and Together with the end cover 20 and the oil supply assembly 30 , they fit on the linear slide rail 40 and can move back and forth relative to the linear slide rail 40 . At the same time, during the reciprocating movement, the oil supply assembly 30 provides an oil on the linear slider 10 , so that there is a lubricating effect between the linear slider 10 and the linear slide rail 40 .

The linear slider 10 has a chute 110 and a ball circulation system 120, and the linear slider 10 is provided with a plurality of return channels 130, and these return channels 130 run through the opposite sides of the linear slider 10 combined with the end cover 20 . The linear slider 10 fits on the linear slide rail 40 through the sliding groove 110 , and a plurality of grooves 111 are disposed in the sliding groove 110 , and the plurality of grooves 111 are respectively disposed on opposite sides of the sliding groove 110 . And, there is a first curved surface 112, a second curved surface 113 and a ditch 114 in each groove 111, and the ditch 114 extends along the groove 111 between the first curved surface 112 and the second curved surface 113, wherein The first curved surface 112 and the second curved surface 113 have the same center of curvature (center of curvature) O, and the ditch 114 is recessed in the groove 111, so that the distance from the center of curvature O of the first curved surface 112 and the second curved surface 113 to the ditch 114 greater than the radius of curvature r (radius of curvature) of the first curved surface 112 and the second curved surface 113.

The ball circulation system 120 has a plurality of balls 121 , and the plurality of balls 121 surround between the return channel 130 and the groove 111 . Moreover, the ball 121 located in the groove 111 is arranged in the groove 111 in an eccentric manner, that is, the center position of the ball 121 in the groove 111 deviates from the center of curvature O of the first curved surface 112 and the second curved surface 113, and only contacts on the first curved surface 112 . In addition, the balls 121 located in the groove 111 are in contact with the first curved surface 113 and the linear slide rail 40 respectively in an arc-shaped two-point 45°-45° (45°-45°) contact manner, so that the linear slide block 10 The balls 121 can move back and forth relative to the linear slide rail 40 . At the same time, in the process of reciprocating movement, the oil provided by the oil supply assembly 30 can flow through the groove 114 through the arrangement of the groove 114, and can be attached to a plurality of balls 121 through the groove 114 to lift the linear slider. 10 and the lubrication effect between the linear slide rail 40.

Referring to Fig. 2A, Fig. 2B and Fig. 3, in the manufacture of the linear slider 10 disclosed in the first embodiment of the present invention, a slider body 140 is firstly provided (S101), and the slider body 140 is a workpiece (Fig. (not shown) are obtained through rough grinding, cutting, forging and shape finishing (cutting) and other mechanical processing procedures. The slider body 140 is provided with a chute 110 and a plurality of return passages 130 passing through the slider body 140 , and at least one arc-shaped groove 111 is formed on two opposite sides of the chute 110 . Then, use a broaching machine or a milling machine to form a ditch 114 in each groove 111 by means of a broach (S102), and the ditch 114 extends along the direction of the groove 111, so that the groove 111 is subjected to The trench 114 is cut to form the first curved surface 112 and the second curved surface 113 having the same center of curvature O. As shown in FIG. At the same time, a non-grinding area is defined by the trench 114 and a grinding area is defined by the first curved surface 112 and the second curved surface 113 in the groove 111 . Moreover, the size of the grinding area must be sufficient for the ball 121 to be clamped between the first curved surface 112 and the linear slide rail after the linear slide block 10 fits on the linear slide rail (not shown in the figure).

Wherein, the size of the abrasive area is inversely proportional to the area of the non-abrasive area, which is determined by the width of the opening formed by the trench 114 on the wall surface of the groove 111 . As shown in Fig. 4 and Fig. 5, the forming method of the opening width of the ditch includes the following steps: first, the center of the groove 111 (that is, the center of curvature O of the first curved surface 112 and the second curved surface 113) is perpendicular to the opposite sides of the chute 110. The direction of the two sides defines a first reference line L1 (S201); then defines a second reference line L2 at a position at an angle of 45 degrees relative to the first reference line L1 (S202); then on the first reference line A third reference line L3 is defined between L1 and the second reference line L2 (S203), and there is an included angle θ23 less than or equal to 25 degrees between the third reference line L3 and the second reference line L2, such as the angle Be the included angle θ23 of 15 degrees or 25 degrees; Afterwards, define a fourth reference line L4 (S204) along the direction of the third reference line L3 toward the first reference line L1 (S204), make the third reference line L3 and the fourth reference line There is an included angle θ34 between L4 that is less than or equal to 70 degrees, for example, the included angle θ34 is 25 degrees or 70 degrees. Wherein, the angle between the first reference line L1 and the third reference line L3 is less than 25 degrees. Moreover, the first reference line L1 , the second reference line L2 , the third reference line L3 and the fourth reference line L4 intersect at the center of curvature O of the first curved surface 112 and the second curved surface 113 .

In this embodiment, the angle between the second reference line L2 and the third reference line L3 is 25 degrees, and the angle between the third reference line L3 and the fourth reference line L4 is 70 degrees. Examples are given, but not limited to. Finally, the wall surface between the third reference line L3 and the fourth reference line L4 in the groove 111 is removed by broaching to form a trench 114 depressed on the wall surface of the groove 111 (S205). At least one rounded corner (R corner) is formed at the bottom; and the unremoved area in the groove 111 is the grinding area defined by the first curved surface 112 and the second curved surface. Meanwhile, since the ditch 114 is recessed in the groove 111 , the distance from the ditch 114 to the center of curvature O of the first curved surface 112 and the second curved surface 113 is greater than the radius of curvature r of the first curved surface 112 and the second curved surface 113 .

2, 3 and 6, after the ditch 114 is formed in the groove 111, the first curved surface 112 and the second curved surface 113 are ground with a grinding tool 50 (for example, a grinding wheel) (S103), so that The first curved surface 112 and the second curved surface 113 are finely ground by the grinding wheel 50 at the same time to have relatively smooth surfaces. During this process, when the grinding tool 50 is inserted into the chute 110 of the slider body 140, the grinding block 510 on the grinding tool 50 is correspondingly inserted into the groove 111 at the same time, and contacts the first curved surface 112 and the second curved surface 112. The grinding area defined by the two curved surfaces 113. At this time, since the non-grinding area is recessed in the wall surface of the groove 111 , the trench 114 can avoid the grinding block 510 without contacting the grinding block 510 . Therefore, when the grinding tool 50 grinds the first curved surface 112 and the second curved surface 113, the residence time of the abrasive block 510 in the groove 111 can be reduced by reducing the contact area between the groove 111 and the grinding block 510. The amount of vibration generated when the grinding block 510 wears the groove 111 saves at least 30% of the wear time, thereby speeding up the grinding operation. In addition, the groove 114 can also be set during the grinding process to fill the groove 114 with cooling liquid or lubricating liquid, so as to reduce the heat and vibration generated during grinding, and further increase the grinding speed.

Please refer to FIG. 7 to FIG. 9 , the structure of the second embodiment disclosed by the present invention is substantially the same as that of the first embodiment, the difference between the two is only the structure of the ditch 114 of the linear slider 10 and the formation of the opening width of the ditch different ways. In the second embodiment disclosed by the present invention, the opening width of the trench is formed by defining a first reference line L1 ( S301 ) in the groove 111 of the slider body 140 After the second reference line L2 (S302) is defined at the position of the degree, a third reference line L3 and a fourth reference line L4 are respectively defined on opposite sides of the second reference line L2, and the third reference line L3 is between Between the first reference line L1 and the second reference line L2 (S303), and between the third reference line L3 and the fourth reference line L4 respectively have an included angle θ23 less than or equal to 20 degrees with the second reference line L2, θ34, for example, the included angles θ23 and θ34 are 10 degrees or 15 degrees respectively. Then, define a fifth reference line L5 along the direction of the third reference line L3 towards the first reference line L1 (S304), and there is an angle less than or equal to 70 degrees between the third reference line L3 and the fifth reference line L5 The included angle θ35 is, for example, an included angle θ35 with an angle of 25 degrees or 70 degrees.

In the second embodiment of the present invention, the angle between the third reference line L3 and the fourth reference line L4 and the second reference line L2 is 20 degrees, and the third reference line L3 and the fifth reference line The angle between L5 is 70 degrees as an example, but not limited thereto. Finally, the wall surface between the third reference line L3 and the fifth reference line L5 in the groove 111 is removed by broaching to form a trench 114 recessed on the wall surface of the groove 111 and having rounded corners (S305), The unremoved area in the groove 111 is the grinding area defined by the first curved surface 112 and the second curved surface 113 . Compared with the first embodiment, since the area of the removed wall in the groove 111 is increased, the area of the grinding zone can be further reduced, thereby increasing the wear rate of the subsequent grinding operation.

The effect of the present invention is that a ditch is provided in the groove on the linear slider for clamping the ball with the linear slide rail, so that the number of grinding tools can be reduced by setting the ditch during the grinding operation of the linear slider at the end of the process. The contact area with the groove can accelerate the grinding operation. In addition, in addition to the grinding process in the previous stage, the groove can provide a cooling or lubricating fluid accommodation space between the groove and the grinding tool, and at the same time, when it is applied to the linear slide rail in the latter stage, the groove can also An oily flow space is provided between the groove and the ball. Therefore, in addition to shortening the grinding time of the linear slider in manufacturing, the sliding efficiency of the reciprocating movement of the linear slider relative to the linear slide rail can be improved in application.

Certainly, the present invention also can have other multiple embodiments, without departing from the spirit and essence of the present invention, those skilled in the art can make various corresponding changes and deformations according to the present invention, but these corresponding Changes and deformations should belong to the scope of protection of the appended claims of the present invention.

Claims (6)

1. the manufacture method of a linear slide block, is characterized in that, comprises the following steps:

One slide block body is provided, and the relative bi-side of the chute of this slide block body have respectively at least one groove;

Form irrigation canals and ditches in this groove, these irrigation canals and ditches are depressed in this groove wall, form at least one fillet in this irrigation canals and ditches bottom simultaneously, these irrigation canals and ditches make in this groove and form two curved surfaces along this groove extension, this two curved surface defines a milling zone in this groove, and these irrigation canals and ditches define a non-milling zone in this groove; And

Grind this groove with an abrasive tool, this groove is contacted with this abrasive tool with this milling zone, and this non-milling zone this abrasive tool of dodging, and and this abrasive tool between there is a gap,

Wherein form the step of these irrigation canals and ditches in this groove, also include:

The direction of central vertical in these bi-side with this groove defines one first reference line;

Define one second reference line in the position that this first reference line is miter angle relatively;

Define respectively one the 3rd reference line and one the 4th reference line in the relative both sides of this second reference line, respectively and have an angle that is less than or equal to 20 degree between this second reference line, and the 3rd reference line is between this first reference line and this second reference line for the 3rd reference line and the 4th reference line;

Define one the 5th reference line in the 3rd reference line towards the direction of this first reference line, and there is an angle that is less than or equal to 70 degree between the 5th reference line and the 3rd reference line; And

Remove the wall of this groove between the 3rd reference line and the 5th reference line, to form this irrigation canals and ditches.

2. the manufacture method of linear slide block according to claim 1, is characterized in that, this angle between the 3rd reference line and the 5th reference line, and its angular dimension is between 25 degree to 70 degree.

3. the manufacture method of linear slide block according to claim 1, is characterized in that, these irrigation canals and ditches are formed in this groove in the broaching tool mode.

4. the manufacture method of a linear slide block, is characterized in that, comprises the following steps:

One slide block body is provided, and the relative bi-side of the chute of this slide block body have respectively at least one groove;

Form irrigation canals and ditches in this groove, these irrigation canals and ditches are depressed in this groove wall, form at least one fillet in this irrigation canals and ditches bottom simultaneously, these irrigation canals and ditches make in this groove and form two curved surfaces along this groove extension, this two curved surface defines a milling zone in this groove, and these irrigation canals and ditches define a non-milling zone in this groove; And

Grind this groove with an abrasive tool, this groove is contacted with this abrasive tool with this milling zone, and this non-milling zone this abrasive tool of dodging, and and this abrasive tool between there is a gap,

Wherein form the step of these irrigation canals and ditches in this groove, also include:

Central vertical with this groove defines one first reference line in the direction of this two side faces;

Define one second reference line in the position that this first reference line is miter angle relatively;

Define one the 3rd reference line between this second reference line and this first reference line, there is an angle that is less than or equal to 25 degree between this second reference line and the 3rd reference line;

Define one the 4th reference line in the 3rd reference line towards the direction of this first reference line, and there is an angle that is less than or equal to 70 degree between the 3rd reference line and the 4th reference line; And

Remove the wall of this groove between the 3rd reference line and the 4th reference line, to form this irrigation canals and ditches.

5. the manufacture method of linear slide block according to claim 4, is characterized in that, this angle between the 3rd reference line and the 4th reference line, and its angular dimension is between 25 degree to 70 degree.

6. the manufacture method of linear slide block according to claim 4, is characterized in that, these irrigation canals and ditches are formed in this groove in the broaching tool mode.

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