JPH063536U - Mounting device - Google Patents

Abstract

(57) [Summary] [Object] The T-nut 16 is provided with the engaging portions 22 having a plurality of sizes, and is used not only for the first mounting groove 24 but also for the second and third mounting grooves. [Structure] The first engaging portion 30 of the T-nut 16 is in the first mounting groove 24, the second engaging portion 32 is in the second mounting groove, and the third engaging portion
The engaging portion 34 engages with the third mounting groove, and the T-nut 16
Is prevented from rotating together with the bolt 14, and the bolt 14 is prevented from coming out upward.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention is intended to fix a workpiece, a jig, etc. to a table by mounting a workpiece, a jig, etc. on a table etc. of a machine tool in cooperation with a groove provided in a table etc. and a nut. The present invention relates to a mounting device.

[0002]

[Prior art]

 Conventionally, a mounting device using a nut that engages with a mounting groove when mounting a workpiece, a jig, or the like on a table of a machine tool is known from the mounting device disclosed in Japanese Utility Model Laid-Open No. 58-132629. Has been.

The table of the machine tool is formed with a mounting groove extending along the mounting surface of the workpiece and having an inverted T-shaped cross section, and the mounting groove is opened on the mounting surface of the table. The opening and a deep portion that is continuous with the opening and is wider than the opening. The T-nut used for mounting is composed of a planar-shaped substantially parallelogram-shaped head portion and a female screw portion provided substantially at the center of the head portion. The width of the substantially parallelogram-shaped head portion in one direction is narrower than the width of the opening portion so that the head portion can be inserted into the mounting groove through the opening portion, and the width of the head portion in the other direction substantially orthogonal to the one direction is small. The short side of the parallelogram (hereinafter referred to as the engaging surface) whose width is set to be approximately equal to the width of the deep portion of the mounting groove and which is substantially orthogonal to the other directions is referred to as the engaging surface. It can be engaged with the side wall surface of the mounting groove as it rotates. In addition, a presser foot that presses the workpiece at the upper end of the bolt that fits into the female thread at the lower end is provided. Further, the head is slightly cut off at the parallelogram obtuse apex so that the parallelogram obtuse apex of the T-nut does not collide with the sidewall surface of the mounting groove when attaching the workpiece.

To mount the work piece on the table of the machine tool, the T-nut is inserted together with the bolt from the opening of the mounting groove with the tip of the bolt slightly fitted in the female thread portion of the T-nut. The bolt is rotated. Then, the engaging surface of the T-nut engages with the side wall surface of the mounting groove as the bolt rotates, and stops, so that the bolt is further rotated and the bolt fits into the T-nut as the bolt rotates. In this way, the length of the bolt portion protruding from the table is shortened, and the work piece is pressed and fixed by the presser foot.

[0005]

[Problems to be solved by the device]

 However, the width of the mounting groove differs slightly for each machine tool and table. Therefore, in order to mount the work piece on each machine tool or table, T-nuts of different sizes must be prepared for each machine tool or table. I had to use multiple T-nuts. Owning multiple T-nuts is troublesome to manage, and it is troublesome to select and use different types of T-nuts for each machine tool and table.

The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to reduce the time and effort required for nut management and to provide a mounting device that is easy to use.

[0007]

[Means for Solving the Problems]

 In order to achieve this object, the mounting device of the present invention is inserted into a mounting groove consisting of an opening opening on the surface of a table for fixing a workpiece or the like and a deep part wider than the width of the opening. In addition, the nut has an engaging portion whose width in one direction is set to a plurality of dimensions according to the type of the width of the deep portion of the mounting groove.

[0008]

[Action]

 In the mounting apparatus of the present invention having the above structure, the nut and the bolt inserted in the mounting groove are engaged with each other to fix the presser foot, and accordingly the work piece is fixed to the table by the presser foot. It

[0009]

【Example】

 Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

First, the structure of the mounting device will be described with reference to FIGS.

As shown in FIG. 1, a mounting device capable of mounting the workpiece 10 on the first table 12 a to the third table 12 c of three types of machine tools (not shown) is a bolt 14 and a bolt 14 thereof. It is composed of a T-nut 16 fitted at the lower end and a presser foot 18 provided at the upper end of the bolt 14 for pressing the workpiece 10. This mounting device is composed of an opening opening in the mounting surface of the work piece of the first table 12a to the third table 12c of each machine tool, and a deep part continuous with the opening and wider than the opening. Is inserted into the mounting grooves 24, 26, 28 having an inverted T-shaped cross section, and the T-nut 16 is engaged with the downward surface D of the mounting grooves 24, 26, 28 and the inner side walls M1, M2, M3. It is fixed in the state and the workpiece 10 is fixed as illustrated.

As shown in FIGS. 1 and 2, the T-nut 16 has a cylindrical female screw portion 20 that fits with the lower end of the bolt 14, and a planar shape that horizontally projects from the lower end of the female screw portion 20. It is composed of a plate-shaped engaging portion 22 having a quadrilateral shape. As shown in FIGS. 2 to 5, the width of the engaging portion 22 of the T-nut 16 in the lateral direction is L, and the width of the engaging portion 22 in the lateral direction is such that the T-nut 16 has each mounting groove. It is narrower than the width W of each opening of the mounting groove 24, 26, 28 so that it can be inserted into the groove 24, 26, 28. On the other hand, on both side surfaces of the engaging portion 22 extending substantially parallel to the lateral direction, the first engaging width L1, the second engaging width L2, and the third engaging width L3 are different between the both side surfaces. The first engagement portion 30, the second engagement portion 32, and the third engagement portion 34 are formed so that three types of widths are generated.

As shown in FIG. 3, the first engaging width L1 of the T nut 16 generated between the first engaging portions 30 is equal to the width dimension W1 of the deep portion of the first mounting groove 24 of the first table 12a. Therefore, the first engaging portion 30 can be engaged with the inner wall M1 of the first mounting groove 24.

As shown in FIG. 4, the second engagement width L2 of the T nut 16 between the second engagement portions 32 is equal to the width dimension W2 (= 2) of the deep portion of the mounting groove 26 of the second table 12b. W1 + P), and therefore the second engaging portion 32 is engageable with the inner side wall M2 of the second mounting groove 26.

As shown in FIG. 5, the third engagement width L3 of the T nut 16 between the third engagement portions 34 is equal to the width dimension W3 (= 3) of the deep portion of the mounting groove 28 of the third table 12c. W1 + Q), the third engaging portion 34 can engage with the inner side wall M3 of the third mounting groove 28.

Although not shown, the obtuse angle portion of the engaging portion 22 is slightly notched, and the T-nut 16 is rotatable in the mounting grooves 24, 26, 28. The magnitude relationship between the widths of the three types of mounting grooves 24, 26, 28 is P <Q, and W1 <W2 <W3. Also, the width W and the depth of the openings of the mounting grooves 24, 26, 28 are equal.

Therefore, the first engaging portion 30 has three kinds of widths of the first engaging width L1, the second engaging width L2, and the third engaging width L3 on both side surfaces in the longitudinal direction of the T-nut 16. By forming the second engaging portion 32 and the third engaging portion 34, the T-nut 16 is commonly engaged with the three types of the first attaching groove 24, the second attaching groove 26, and the third attaching groove 28. Therefore, it is possible to commonly use the tables 12a to 12c of the three types of machine tools. Therefore, the number of holding the presser foot 18 and the T-nut 16 is the minimum, and the storage place and the manufacturing cost can be reduced. Further, since which T-nut 16 to be used for which machine tool can be selected without hesitation, the setup time for fixing the workpiece 10 can be shortened.

A through hole 36 is vertically provided at one end of the presser foot 18, and the bolt 14 is inserted into the through hole 36. The inner diameter of the through hole 36 of the presser foot 18 is larger than the outer diameter of the bolt 14, and the presser foot 18 does not rotate together with the bolt 14 even if the bolt 14 rotates. This presser foot 18 is fixed to the upper end of the bolt 14 so that when it moves up and down, it moves up and down together with the bolt 14. Since the lower tip of the bolt 14 is inserted into the mounting grooves 24, 26, 28, the length dimension of the bolt 14 below the lower surface of the presser foot 18 is longer than the height dimension of the workpiece 10, It is shorter than the combined size of the height of the object 10 and the depth of the mounting grooves 24, 26, 28.

The attaching operation of the work piece 12 will be described below with reference to FIGS. 1 to 5.

First, the lower end of the bolt 14 having the presser foot 18 fixed to the upper end is slightly fitted to the T-nut 16, and then the T-nut 16 moves in the longitudinal direction of the T-nut 16 as shown in FIG. Is parallel to the opening, and is inserted into the opening of the first mounting groove 24 from above. Next, when the bolt 14 is rotated, the first engaging portion 30 of the T nut 16 and the inner side wall M1 of the first mounting groove 26 engage with each other as shown in FIG. With the subsequent rotation of the, it cannot rotate any more. When the bolt 14 is further rotated, the fitting between the bolt 14 and the T-nut 16 is further advanced, and the upper surface of the engaging portion 22 contacts the downward surface D of the mounting groove 24 as shown in FIG. As a result, the T nut 16 is prevented from coming off above. Then, the bolt 14 is rotated until the presser foot 18 comes into contact with the upper surface of the workpiece 10 placed on the first table 12a, and the workpiece 10 is attached to the first table 12a of the machine tool.

Also, when the workpiece 10 is fixed to the second table 12b of another machine tool, the longitudinal direction of the T nut 16 is parallel to the opening, and the lower end of the bolt 14 is second mounted. It is inserted into the groove 26. Next, when the bolt 14 is rotated, the second engaging portion 32 of the T nut 16 is engaged with the inner side wall M2 of the second mounting groove 26 as shown in FIG. 10 is attached to the second table 12b.

Further, when the workpiece 10 is fixed to the third table 12c of another machine tool, the longitudinal direction of the T-nut 16 is parallel to the opening and the lower end of the bolt 14 is the third attachment. It is inserted into the groove 28. Next, when the bolt 14 is rotated, the third engaging portion 34 of the T nut 16 abuts against the inner side wall M3 of the third mounting groove 28 as shown in FIG. Is attached to the third table 12c.

The mounting grooves 24, 26, 28 provided on the table of the machine tool are not limited to the inverted T-shaped grooves of the cross section, but may have the shapes as shown in FIGS. In addition, a groove may be formed to form the mounting groove, and in that case, the shape of the T-nut 16 needs to be deformed so as to engage with the mounting groove. Further, for example, the inner wall M1 at the deep portion of the mounting groove 24 prevents the T-nut 16 from rotating, but the engaging portion 22 engages with another portion such as the sidewall E of the opening shown in FIG. Movement may be prevented. Further, the engaging portion 22 that engages with the mounting grooves 24, 26, 28 is not limited to the lower portion of the female screw portion 20, and may be provided at the substantial center or upper portion of the side surface of the female screw portion 20. Further, the engaging portion 22 is provided with three types of engaging portions 30, 32, 34, but the number of engaging portions 22 provided may be two or four depending on the number of mounting grooves. Is also good. The planar shape of the engaging portion 22 is not limited to the polygonal shape, and may be a curved shape including a spline or the like.

[0024]

[Effect of device]

 As is apparent from the above description, according to the present invention, the nut is provided with the engaging portion whose width in one direction is set to a plurality of dimensions depending on the kind of the width of the deep portion of the mounting groove. Since the number of nuts is minimized and the management labor is reduced, selection and maintenance of which nut to use becomes easier.

[Brief description of drawings]

FIG. 1 is a diagram of a machine tool including a mounting device according to an embodiment of the present invention.

FIG. 2 is a plan view of a machine tool including a mounting device.

FIG. 3 is a plan view of the T-nut when fixed, showing a state of use when the engagement width of the T-nut is the smallest.

FIG. 4 is a plan view of the T-nut when fixed, showing the use state when the engagement width of the T-nut is the second largest.

FIG. 5 is a plan view of the T-nut when fixed, showing a state of use when the engagement width of the T-nut is the largest.

FIG. 6 is a side sectional view of a main part of a machine tool showing another shape of the mounting groove.

FIG. 7 is a side sectional view of a main part of a machine tool showing another shape of the mounting groove.

[Explanation of symbols]

 10 Workpiece 12a 1st table 14 Bolt 16 T nut 20 Female thread part 22 Engagement part 24 1st mounting groove 26 1st mounting groove 28 1st mounting groove 30 1st engaging part 32 2nd engaging part 34th 3 engaging parts

Claims (1)

[Scope of utility model registration request] 1. A mounting groove formed of an opening opening on the surface of a table on which a workpiece or the like is mounted and a deep portion wider than the width of the opening, and the width in one direction is set to the mounting. An attachment device comprising a nut having an engagement portion set to a plurality of dimensions according to the type of width of the deep portion of the groove.