JP3893523B2 - Linear guide - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an improvement of a linear guide.
[0002]
[Prior art]
Linear guides consisting of a slider for attaching a work device and a guide for holding the slider and moving it linearly include those equipped with a saddle-like slider used for table movement of machine tools, automatic machines, etc. A simple type having a slider for attaching a small working device to be used is known.
[0003]
For those equipped with a saddle-shaped slider, one using a wide-type guide with a wide constraint in the direction perpendicular to the guide direction (so-called English type), and supporting the load of the saddle on both slopes of the mountain-shaped guide surface Narrow type guides (so-called rice type) are known, but any of them requires extremely high processing accuracy for its production, and the production cost is high. It is difficult to apply to a small linear guide used in the above.
[0004]
On the other hand, a small linear guide used in an automatic machine or the like is generally one in which the slider is slid into the guide by simple T-slot fitting, and the slider is reciprocated by an air cylinder or the like, but the components are small. In addition, it is difficult to process the grooves provided in the slider and the guide, in particular, the inside polishing (grinding using the side surface of the grindstone) and the like, and in order to obtain sufficient processing accuracy, the manufacturing cost is high as described above. There are disadvantages. Small linear guides that use ball spline shafts, as well as small linear guides that form a ball screw shaft and ball spline shaft on the same axis to achieve linear feed have been proposed. Since the ball spline shaft and the ball screw shaft themselves are extremely expensive, the price of the linear guide manufactured using this is also expensive.
[0005]
In the case of a small linear guide used for an automatic machine or the like, an air cylinder or a spring is generally used as a drive source for reciprocating the slider. However, these drive sources are positioned by themselves. Therefore, in order to precisely control the movement limit of the slider, it is necessary to provide a mechanical adjusting member between the guide and the slider.
[0006]
This adjusting member is provided with a long slot or groove in the longitudinal direction in the center of the guide so as to allow movement of a stopper fixed on the lower surface of the slider, and the long end from the longitudinal end surface of the guide. In general, it is configured by a screw per thread that is inserted into a hole or groove and screwed, and the stop position of the stopper, that is, the slider movement limit is regulated by adjusting the amount of protrusion of the screw per time. ing.
[0007]
As a means to prevent loosening of the screw per degree due to the collision of the stopper, a double nut is screwed into the degree screw that becomes the adjustment member, or the screw is pressed from the side by a set screw. Is common. However, in the former case, the double nut may be loosened relatively easily due to repeated collision of the stopper, and depending on the location equipped with the linear guide, it may be inconvenient to use the tool to turn the nut. There is also.
[0008]
[Problems to be solved by the invention]
An object of the present invention is to provide a linear guide that is inexpensive and has a practically sufficient accuracy.
[0009]
[Means for Solving the Problems]
The present invention achieves the above-mentioned object by configuring the main part of the linear guide using inexpensive and highly accurate machine elements that are generally commercially available.
[0010]
The main part of the linear guide, that is, the means for slidably attaching the slider to the guide and assuring its linear movement, is a combination of a V pulley and a round bar (the former), and a bearing and a square bar. (The latter) can be adopted.
[0011]
A specific configuration of the former includes a guide that is positioned so as to sandwich both sides of the slider, a slider that is slidably mounted between the guides, and an inner portion of the guide along the moving direction of the slider. It consists of a round bar attached to the straight groove formed, and a V pulley fitted and fitted in a deep groove formed on both sides of the slider. V pulleys (JIS B 1854 and non-standard commercial products) and round bars with high cross-sectional roundness (JIS G 3192 and non-standard commercial products) are provided as low-cost machine elements in advance. Can be obtained.
[0012]
The direct means for guiding the slider is constituted by a round bar having a high cross-sectional roundness attached to the linear groove of the guide. Therefore, unlike the conventional T-groove fitting in which the slider and the guide are directly fitted, there is no need to finish the inside of the guide with high accuracy overall, and only the straight groove needs to be precisely machined. Is simplified.
[0013]
The processing on the slider side is the same as this, and it is not necessary to finish the outer circumference of the slider with high accuracy overall. The mounting position of the V pulley that fits the round bar and the deep groove that prevents the wobbling by pinching the V pulley Since only the groove width needs to be precisely processed, the processing process is simplified.
[0014]
As a result, although the number of parts itself is increased compared with the conventional linear guide using T-groove fitting, the material cost and labor cost are integrated because the material is inexpensive and the machining process is simplified. As a result, it is possible to provide an inexpensive linear guide as compared with the conventional linear guide, and the accuracy of the linear guide itself is not significantly impaired.
[0015]
In addition, since there is no surface contact portion between the slider and the guide, a light operation of the slider is possible.
[0016]
Also, the specific configuration of the latter includes a guide that is positioned so as to sandwich both sides of the slider, a slider that is slidably attached between the guides, and an inner portion of the guide along the moving direction of the slider. It consists of a square bar attached to a provided linear groove and a bearing embedded in a deep groove carved on both sides of the slider. Bearings (JIS B 1512 and non-standard commercial products) are provided in advance as a low-cost machine element. Also, for square bars, those used for parallel key (JIS B 1301) material removal, or non-standard Commercial products can be easily obtained.
[0017]
The direct means for guiding the slider is constituted by a square bar attached to the linear groove of the guide. Therefore, unlike the conventional T-groove fitting in which the slider and the guide are directly fitted, there is no need to finish the inside of the guide with high accuracy overall, and only the straight groove needs to be precisely machined. Is simplified.
[0018]
The processing on the slider side is the same as this, and it is not necessary to finish the outer circumference of the slider with high accuracy overall, but only the mounting position of the bearing that fits the square bar and the groove width of the deep groove that slides on the square bar are precise. Therefore, the machining process is simplified.
[0019]
Similar to the above, although the number of parts itself is increased compared to the conventional linear guide using T-groove fitting, the material cost and labor cost are comprehensive because the material is inexpensive and the machining process is simplified. As a result, it is possible to provide an inexpensive linear guide as compared with the conventional linear guide, and the accuracy of the linear guide itself is not significantly impaired.
[0020]
In addition, for each of the above-described configurations, as means for adjusting the movement limit of the slider, a stopper fixed on the lower surface of the slider, a slot or groove in the center of the guide provided to allow the movement, and a guide It is possible to apply an adjusting means including a screw for each time the stop position of the stopper is adjusted by entering the elongated hole or groove from one end face in the longitudinal direction.
[0021]
Each time the stopper stop position is adjusted, the screw is inserted through a first through hole communicating with the slot or groove from one end face in the longitudinal direction of the guide. Further, a second hole intersecting with the first through hole is provided from the side of the guide, and a locking member provided with a female screw that is screwed with the screw is inserted in the second hole. Screws are screwed in once, and the amount of protrusion of the screw into the slot or groove is adjusted to adjust the slider movement limit.
[0022]
The fixing screw for preventing the adjustment member from loosening is attached by screwing into a fixing screw hole provided in the guide, and the locking member is pressed in the axial direction at the tip of the fixing screw to become an adjustment member. The rotation of the contact screw, that is, the loosening is prevented.
[0023]
Since the contact screw serving as the adjusting member is pressed and fixed by the fixing screw through the locking member screwed into the adjustment member, the surface of the contact screw itself is not damaged. Further, since the contact screw serving as the adjusting member is supported by a surface contact portion formed between the female screw of the locking member and the inner peripheral surface of the first through hole, the conventional screw 1 is used. As compared with the case of point support, it is possible to reliably prevent loosening and falling off due to rotation.
[0024]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings. 1 to 4 show a linear guide 1 as a first embodiment of the present invention. 1 is a plan view of a linear guide 1 including a partial cross section, FIG. 2 is a front view of the linear guide 1 including a partial cross section, and FIG. 3 is a cross sectional view of the linear guide 1 seen from the left side by dividing the linear guide 1 by a plane orthogonal to the longitudinal direction. It is.
[0025]
In general, the linear guide 1 in this embodiment includes a slider 3 for attaching the working device 2, a guide 4 for holding the slider 3 and moving it linearly, and four V attached to the slider 3. The pulley 5 and the round bars 7 and 7 interposed between the linear groove 6 of the guide 4 and the V pulley 5 are configured.
[0026]
As shown in FIG. 3, the guide 4 is integrally formed by a rail member having a substantially concave cross section, and the slider 3 is slidably attached in the longitudinal direction between the wall portions 8 and 8 located on both sides thereof. Yes. In addition, the fitting state is a complete clearance. Further, linear grooves 6 and 6 having a rectangular cross section along the moving direction of the slider 3 are engraved in the inner portions of the walls 8 and 8 over the entire length in the longitudinal direction.
[0027]
In this embodiment, the groove widths of the straight grooves 6 and 6 are the same as the diameter of the round bar 7. Actually, in order to prevent the round bar 7 from rattling, +0 to -a (where a is 1). / Tolerance of machining (positive minute value on the order of 100 mm) is allowed. Further, the groove depth of the straight grooves 6 and 6 is the same as or slightly deeper than the radius of the round bar 7. This is because it is necessary to firmly restrict the mounting position of the round bar 7 in the vertical direction by the upper and lower surfaces of the linear groove 6 with the round bar 7 in close contact with the groove bottom of the linear groove 6.
[0028]
When machining the straight groove 6, the most important thing is to maintain the parallelism of the groove bottom by keeping the distance between the two straight grooves 6, 6. After either one of the linear grooves 6 is processed, the linear scale is referred to or the automatic control is used without changing the setup, and the other linear groove 6 is continued as it is. It is better to have processed. Since the processing accuracy of the inner surface of the walls 8 and 8 is not questioned, it is not necessary to perform troublesome inside polishing or the like on this portion.
[0029]
The slider 3 fitted in the guide 4 is formed in a substantially H-shaped cross section as shown in FIG. 3, and has deep grooves 9 having a groove width comparable to the thickness of the V pulley 5 on both sides thereof. The groove depth of the deep groove 9 does not necessarily need to be comparable to the diameter of the V pulley 5, but in order to suppress the fluctuation of the V pulley 5, as shown in FIG. It is desirable to do. Of course, it is meaningless if a dimensional error or a shape error has occurred on the upper and lower surfaces of the deep groove 9, and it is necessary to obtain sufficient processing accuracy by adopting inside polishing or the like only for this portion. Regarding the processing tolerance, it is + b to −0 (where b is a positive minute value on the order of 1/100 mm) with respect to the thickness of the V pulley 5.
[0030]
In addition, instead of the deep groove 9 as in this embodiment, it is also possible to use a horseshoe-shaped groove formed by inserting a milling cutter or the like from the side for each arrangement position of the V pulley 5. In some cases, heat generated by machining may accumulate in the workpiece, resulting in machining errors due to thermal expansion, and the identity of the dimensions and shape of the four grooves provided individually may not be completely guaranteed. Therefore, the groove for attaching the V pulley 5 should be a through groove as shown in FIG.
[0031]
Two V pulleys 5 on one side of each of the deep grooves 9 and 9 of the slider 3 are rotatably attached by a shaft 10. The presence or absence of rattling of the slider 3 with respect to the round bars 7 and 7 attached to the straight grooves 6 and 6 is finally determined by the distance between the V pulleys 5 and 5 provided in the direction orthogonal to the moving direction of the slider 3. Therefore, care must be taken when holes for passing the respective shafts 10 are formed in the slider 3. As already described, since the slider 3 is fitted to the guide 4 in a clearance state, there is no problem even if the slider 3 is attached to the guide 4 with a slight offset. In relation to the positional relationship between the shaft holes, in particular, in the two sets of V pulleys 5 arranged in the direction orthogonal to the moving direction of the slider 3, the accuracy of the separation distance between the V pulleys 5 and 5 in each set is maximized. Priority should be given.
[0032]
In the example shown in FIGS. 1 and 2, each of the four pulleys 5 is arranged close to the base side (right side) of the slider 3 as a whole in order to earn a protruding stroke of the slider 3 with respect to the guide 4. However, in order to prevent the slider 3 from wobbling, the above-described sets of V pulleys 5 should be arranged as far apart as possible along the moving direction of the slider 3 as long as the protruding stroke of the slider 3 is not impaired. Is desirable. Since the shaft 10 is attached in such a manner that it is press-fitted into the aforementioned shaft hole, no special retaining means is required.
[0033]
In this embodiment, as shown in FIG. 1 and FIG. 3, screw holes that penetrate from the outer surface of one wall portion 8 of the guide 4 to the groove bottom of the linear groove 6 are extended along the linear groove 6 at a plurality of locations. The three set screws 20 (a, b, c) can be screwed together in series. Therefore, even if a slight error occurs in the processing of the straight groove 6 and a problem occurs in the parallelism of the round bars 7, 7, this can be corrected to some extent. When sufficient parallelism can be obtained, two set screws may be used, and further, adhesive fixing may be performed with one set screw. Specifically, the following work may be performed.
[0034]
The slider 3 is assembled in the guide 4, and the assembled screw is set so that the left and right round bars 7 are up and down, and the set screw 20a, 20b located on the upper side with the guide rod 4 standing and the piston rod 13 of the air cylinder 12 pulled in. Screw the round bar 7 against the V pulley 5 and remove it. Next, the piston rod 13 of the air cylinder 12 is protruded, the set screw 20c is screwed in, the round bar 7 is pressed against the V pulley 5 and the play is removed. Further, the piston rod 13 is retracted, and the posture of the guide 4 is turned upside down, and similarly, it is confirmed whether there is any play between the slider 3 and the round bar 7 originally located on the lower side.
[0035]
A fixing member 11 is attached to the base side of the slider 3. The fixing member 11 includes horizontal portions 14a and 14a on both the left and right sides and a vertical portion 14b that connects them on the air cylinder 12 side (FIG. 2). The horizontal portion 14a is fitted into the deep groove 9 of the slider 3, and the upper portion of the vertical portion 14b The lower part is attached to the slider 3 by a press-fit pin 16 that abuts the end face of the slider 3 on the air cylinder 12 side and fixes the horizontal part 14a.
A U-shaped hole 17 is formed in the central portion in the left-right direction of the vertical portion 14b, and a small diameter portion of a spool-like engagement piece 15 provided at the tip of the piston rod 13 is inserted into the hole 17 so that the slider 3 The piston rod 13 is fixed in the axial direction (FIG. 1).
[0036]
A rectangular flange 18 is integrally fixed to the cylinder head portion of the air cylinder 12, and the air cylinder 12 is attached to the guide 4 by a female screw 19 on the base side of the guide 4 through a bolt from the back side of the rectangular flange 18. This is done by screwing into The rectangular flange 18 of the air cylinder 12 constitutes a retaining means for the round bar 7 together with a cover member 31 fixed to the tip of the guide 4. Although the shape of the cover member 31 is substantially the same as the cross-sectional shape of the guide 4, the cover member 31 does not have a cutout portion corresponding to the linear groove 6, so that the round bar 7 can be prevented from protruding forward.
[0037]
Further, a long slot 21 in the longitudinal direction as shown in FIGS. 2 and 4 is provided at the center of the guide 4 to allow the stopper 23 fixed to the lower surface of the slider 3 with a bolt 22 to move. .
[0038]
Further, a first through hole 24 that penetrates from the distal end surface of the guide 4 to the long hole 21 is formed in the distal end portion of the guide 4, and a screw 25 that passes through the first through hole 24 serving as an adjustment member is passed through the first through hole 24. . The thread eye between the through hole 24 and the screw 25 per degree is a gap and is not screwed together. In addition, a second hole 26 is formed through one side of the guide 4 so as to cross the first through hole 24 so that a cylindrical rod member 27 serving as a locking member can slide in the axial direction. Has been inserted.
[0039]
The inner diameter of the second hole 26 and the outer diameter of the rod member 27 are larger than the outer diameter of the screw 25 per degree, and a female screw 28 for screwing the screw 25 per degree penetrates the rod member 27 in the diameter direction. Is provided. Further, a fixing screw hole 29 is threaded from the other side of the guide 4 so as to face the second hole 26, and a fixing screw 30 for pressing the rod member 27 in the axial direction is screwed.
[0040]
The limit position of the protrusion stroke of the slider 3 is adjusted by rotating the screw 25 with the fixing screw 30 loosened to adjust the amount of protrusion of the screw 25 into the elongated hole 21 to adjust the stopper 23 and the screw per degree. 25 by adjusting the abutting position with 25. When the fixing screw 30 is tightened after the adjustment is completed, the rod member 27 presses the screw 25 against the one side of the through hole 24 and prohibits the rotation of the screw 25 per degree. As a result, the screw 25 against the guide 4 The axial position of is fixed.
[0041]
Since the rod member 27 screwed with the screw 25 as the adjusting member is pressed and fixed by the fixing screw 30, the surface of the screw 25 is not damaged. Further, the screw 25 serving as the adjusting member is supported by a surface contact portion generated between the female screw 28 of the rod member 27 serving as the locking member and the inner peripheral surface of the first through hole 24. As a result, the screw 25 can be loosened and fallen off due to the rotation of the screw 25 as compared to the conventional method in which the screw 25 is supported directly from the side with a thin set screw or the screw 25 itself is fixed with a double nut. Can be prevented.
Moreover, since it can be adjusted only with a small hexagon stick wrench, the necessary adjustment space around the periphery can be reduced.
[0042]
Compared to the slider that fits and moves in the T-groove of a precisely machined guide, the linear travel stability of the slider 3 in the linear guide 1 of this embodiment is not superior in terms of accuracy. However, since a material that can be obtained at low cost is used, the linear guide can be provided at a low price, and it has sufficient practical accuracy. Further, there is an excellent point that the slider 3 can be operated lightly.
[0043]
In other words, when a linear guide using T-groove fitting is used, the guide and slider are in direct sliding contact with each surface, so that there is no surface roughness or shape error (swell) over the entire surface. However, in this embodiment, due to the use of commercially available round bars 7 and V pulleys 5 with sufficient accuracy guaranteed, care must be taken in the actual work process. This is only grinding of the straight groove 6 and drilling of a shaft hole for pivotally supporting the V pulley 5 to the slider 3 and grinding of both sides of the deep groove 9. And not. Compared to the linear guide using T-slot fitting, the overall configuration including the number of parts is complicated, but if you combine the point that you can use commercially available parts and the simplification of the machining process, the conventional linear guide Compared to, it is possible to provide an inexpensive product.
[0044]
In addition, the linear guide using T-groove fitting or the like requires a greasing measure to reduce the friction on the sliding contact surface. Therefore, an automatic machine that works on plastic products that are not oil resistant. However, in the linear guide 1 of this embodiment, since the light guide operation of the slide guide 3 is guaranteed by the engagement of the V pulley 5 and the round bar 7, it is not always necessary. There is no need for lubrication, and it can be used with peace of mind for automatic machines that handle plastic products. Further, since the operation of the slider 3 is light, it can be suitably used for a small linear guide using a low output air cylinder or the like.
[0045]
As shown in FIGS. 2 and 3, the linear guide 1 is attached to an automatic machine or the like by passing a bolt through a counterbore screw through hole 32 drilled in the vertical direction on the base side of the guide 4, and automatically This is done by screwing into a female screw threaded on the machine side.
[0046]
FIG. 5 is a cross-sectional view showing a linear guide 33 according to another embodiment of the present invention. About the structure regarding the guide 4 and the air cylinder 12, etc., since it is the same as that of embodiment shown in FIGS. 1-4, concrete description is abbreviate | omitted.
[0047]
This embodiment differs from that shown in FIGS. 1 to 4 in that a square bar 34 and a bearing 35 are employed instead of the round bar 7 and the V pulley 5 described above. The square bar 34 may be self-made by surface grinding. However, when a square bar whose accuracy is guaranteed as a material such as a parallel key is commercially available, it can be used to perform the process of cornering and surface grinding. Can be omitted.
[0048]
The groove widths of the linear groove 6 of the guide 4 and the deep groove 9 of the slider 3 are engraved according to the thickness of the square bar 34. In particular, since the precision of the width of the deep groove 9 that is in sliding contact with the square bar 34 is required, it is desirable to perform precision processing by inside polishing or the like. Further, in this embodiment, it is necessary to slidably fit the deep groove 9 to the square bar 34 and to embed the deep groove 9 in the deep groove 9 so that the outer ring of the bearing 35 does not protrude from both side surfaces of the slider 3.
[0049]
As a result, the vertical wobbling of the slider 3 with respect to the guide 4 is prevented by the fitting of the square bar 34 and the deep groove 9, and the horizontal wobbling of the slider 3 with respect to the guide 4 is prevented between the square bar 34 and the outer ring of the bearing 35. Prevented by sliding contact.
[0050]
As in the case of the embodiment shown in FIG. 1, it is possible to provide a guide mechanism having practically sufficient accuracy using a material that can be obtained at low cost, and that the slider 3 can be operated lightly. It is effective. However, in the embodiment shown in FIG. 5, a certain amount of frictional resistance acts between the square bar 34 and the deep groove 9, so that the operation of the slider 3 is somewhat heavier than that shown in FIG.
[0051]
However, the wobbling generated in the vertical direction of the slider 3 due to the sliding contact between the square bar 34 and the deep groove 9 can be greatly improved, and since the bearing 35 is used instead of the V pulley 5, As compared with the embodiment shown in FIG.
[0052]
That is, in the embodiment shown in FIG. 1, the V pulley 5 needs to be rotatable with respect to the shaft 10, so the V pulley 5 and the shaft 10 have to be a gap, and this gap causes a certain amount of play. However, in this embodiment, only the outer ring of the bearing 35 needs to be rotated, so that the inner ring of the bearing 35 can be press-fitted into the shaft 10, and the position of the hole through which the shaft 10 passes is also possible. If determined accurately, finally, the sliding contact accuracy between the outer ring of the bearing 35 and the square bar 34 can be achieved with the assembling accuracy between the outer ring and the inner ring of the bearing 35.
In order to eliminate the play between the square bar 34 and the bearing 35, there is an adjusting means in which various types of the square bar 34 having different dimensions in the width direction are prepared and the square bar 34 is replaced. In this case, a set screw for pressing the square bar 34 from the side surface is unnecessary.
[0053]
【The invention's effect】
In the present invention, instead of directly sliding the slider and the guide to guide the linear motion of the slider, a commercially available inexpensive high-precision member such as a V pulley and a round bar, or a bearing and a square is provided. Since the rod is interposed between them to guide the linear motion of the slider, there is no need to apply high-precision surface roughness and shape errors to the slider and the main body of the guide. By combining the costs, a cheaper linear guide can be provided, and its accuracy can be guaranteed within a practically sufficient range.
[0054]
It also prevents loosening and falling off of the screw per degree, which is an adjustment member for adjusting the movement limit of the slider, and damage of the screw per degree, and ensures proper repeated operation of the slider over a long period of time. it can.
[Brief description of the drawings]
FIG. 1 is a partially cutaway plan view (first embodiment)
FIG. 2 is a front view with a cross-section partially cut away (first embodiment);
FIG. 3 is a side view of a section taken along the line AA in FIG. 1. FIG. 4 is a plan view showing a part of a stopper and a screw at a degree of cross section. FIG. Form)
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Linear guide 2 Working apparatus 3 Slider 4 Guide 5 V pulley 6 Linear groove 7 Round bar 8 Wall part 9 Deep groove 10 Shaft 11 Fixing member 12 Air cylinder 13 Piston rod 14a Horizontal part 14b Vertical part 15 Engagement piece 16 Press-fit pin 17 Gap 18 Rectangular flange 19 Female screw 20 Set screw 21 Long hole 22 Bolt 23 Stopper 24 First through hole Screw per 25 degrees (adjustment member)
26 Second hole 27 Rod material (locking member)
28 Female screw 29 Fixing screw hole 30 Fixing screw 31 Cover member 32 Screw through hole 33 Linear guide 34 Square bar 35 Bearing

Claims (2)

In a linear guide having a slider for attaching a working device and a guide for holding and moving the slider linearly, the slider is slidably attached to the guide positioned so as to sandwich both sides of the slider. A linear rectangular groove along the moving direction of the slider is engraved on each of the inner portions of the guide and square bars are attached thereto, while grooves equivalent to the linear groove are formed on both side surfaces of the slider facing the rectangular groove. A deep groove having a width is engraved, and an outer ring is embedded in the deep groove so as not to protrude from both sides of the slider, and two bearings are rotatably supported on one side of the slider and attached to the rectangular groove. The projecting portion of the square bar is brought into contact with the deep groove of the slider on both opposing surfaces of the groove, and the outer ring of the bearing is slidably contacted with the opposing surface of the square bar. Linear guide, characterized in that it has been adapted to guide the linear movement of the slider Te. A longitudinal long hole or groove provided in the central portion of the front Symbol guides, as well as permit movement of the elongated hole or a stopper fixedly provided on the lower surface of the slider by a groove, the elongated hole from the longitudinal end surface of the guide Alternatively, in a linear guide that adjusts the moving stroke of the slider by adjusting the amount of protrusion of the adjusting member that is provided by being inserted into the groove, the adjusting member is configured with a screw per turn, and the longitudinal direction of the guide is A first through hole communicating with the elongated hole or groove is drilled in the end face with a diameter larger than the diameter of the screw per degree, and the first through hole having a diameter larger than the diameter of the screw per degree. A second hole that intersects the through hole of the guide is provided from the side of the guide, and a locking member that is provided by penetrating the female screw that engages with the screw in the diametrical direction is fitted in the second hole. And the first through A screw is screwed into each hole passed through the hole, a fixing screw is screwed into a fixing screw hole screwed into the guide, and the locking member is pressed in the axial direction with the tip of the fixing screw to lock. The linear guide according to claim 1, wherein the member is fixed.

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