LT5107B - Apdirbimo staklemis apdirbamos detales tvirtinimo itaiso savarzine plokste ir tvirtinimo itaisas su viena ar daugiau savarziniu ploksciu - Google Patents

Abstract

Tvirtinimo itaisas turi staciakampi rema (1), ant kurio isilginiu atramu (4, 5) yra uztvirtintos savarzos plokstes (7, 8, 9, 10). Kiekviena plokste yra numatyta su daugybe srieginiu greztiniu kiaurymiu (15), kurios yra isplestos iki nominalaus dydzio. Taip galima detales (16, 19) suspaudimui ir pozicionavimui i kiekviena greztine kiauryme (15) ikistus srieginius kaiscius (17), i greztines kiaurymes (15) isuktus specialius sraigtus (22) arba atramos strypus (22) naudoti su nominalaus dydzio skersmeniu. Sprendimas skiriasi tuo, kad tikras suspaudimas vyksta savarzos plokstemis (7, 8, 9, 10), rema (1) galima lengvai prilaikyti, cia jis yra islaisvinamas nuo visu suspaudimo jegu.

Description

Machine-tool fastener clamping plate 5 and clamping device with one or more clamping plates.

The present invention encompasses a clamping plate for use in a machine tool fixture fastener in accordance with the general part of the first claim of the invention and also a fastening device with one or more clamping plates in accordance with the general part of the claim 11.

When the workpiece is machined, it must be fixed on the workbench at the workstation. It is known that a machining table has a groove passing through its rear end, into which movable clamping screws are placed. Thanks to the latter and the bow-shaped fasteners, the part can be clamped on the lathe workbench. This method is cumbersome and time consuming and is often unsuitable for small details.

There are known fasteners which have a frame with provided clamping means. According to the known variant of CH-A-467 647, one side of the frame is made as a rigid clamping pad and a movable clamping pad is mounted within the frames and is actuated by one or more fastening screws, shafts or the like. This allows the piece to be secured between the sturdy and movable mounting pads. The disadvantage of such fasteners is that only a single piece can be fixed, but not a few identical pieces of exactly the same size. Another disadvantage is that this type of frame, when it is required to be used for fastening large or many small parts, is too flexible when it is plastically deformed during compression, or extremely heavy and difficult to handle when made rigid enough. In most applications, most where the part is machined by stratified erosion is v

it is imperative that the frame is open. This requirement additionally makes it difficult to construct a frame of acceptable weight that is sufficiently stable.

The object of the present invention is to provide this type of clamping plate and fastening device 5 so that they are light enough and can be lifted by hand, and require extremely high resistance to elastic deformation during compression, while at the same time larger, even irregularly shaped details, or many times smaller details, including various sizes.

According to the present invention, this is achieved by the features of the clamping plate set forth

And the features of the anchorage set forth in

Definition II.

This design allows the piece to be secured between two clamping plates, which are set at a desired distance, that is, according to the width or length of the part to be fastened, and temporarily secured on both sides of the frame. The part or parts are clamped in the auxiliary frame at a location optimally chosen for this purpose, so that the carrier frame is released from any clamping forces.

The clamping plates intended for use in such anchoring devices may have a plurality of projected threaded holes of optimum size, extended through, perpendicular to the direction of expansion of the clamping plate.

Threaded holes can perform three functions:

1. To prevent buckling of the clamping plate, it is possible to adequately provide both boreholes of both clamping plates, located directly below the part, with through-going threaded pins, which are freely inserted in a single line and fixed by a nut.

2. Separate boreholes may be provided with screws positioned in front of the part. In particular, it allows for irregularly shaped or unsustainable details to be fixed.

3. Separate boreholes may be provided with cylindrical support bars on which the workpiece is to be mounted or held; this is especially convenient when one after the other many details are fixed in the frame in the same position.

The examples of the fastening device according to the present invention and the clamping plate according to the present invention are further illustrated with reference to the accompanying drawings. The drawings show:

FIG. 1 is a side view of a clamping plate according to a first embodiment;

FIG. 2 is a bottom view of the clamping plate according to FIG.

FIG. 3 is a partial section through the clamping plate along line III-III. 1.

FIG. 4 is a side view of a clamping plate according to a second embodiment;

Figure 5 is a bottom view of the clamping plate according to Figure 4;

Fig. 6 is a partial view through the clamping plate of Fig. 5, taken along line VI-VI in Fig. 5;

Fig. 7 is a top plan view of a mounting frame in which a plurality of details are mounted; and

Fig. 8 is a top plan view of a mounting frame in which a plurality of details are mounted.

FIG. 1-3 illustrate a clamping plate (7) according to a first embodiment, wherein the clamping plate (7) is presented in a side view, a bottom view and also in a partial section. The clamping plate (7) is formed of an elongated steel member having a rectangular cross-section. At both ends, the clamping plate (7) has a flattened protrusion (11). The length of the clamping plate (7) without protrusions (11) corresponds to the measured width of the mounting frame (1) between the longitudinal supports (4) and (5), as illustrated in FIG. 8. The projections (11) are so dimensioned that they overlap at least partially with the upper sides of the threaded holes (6) provided in the longitudinal supports (4) and (5) of the mounting frame (1).

The projections (11) are provided with elongated holes (12) extending transversely to the clamping plate (7) and arranged so that the clamping plate (7) in the frame (1) lies above the threaded holes (6) and uses them (cf. FIG. .8). The length of the hole (12) is slightly more than the distance between adjacent threaded holes (6) so that each clamping plate (7), respectively (8), (Fig.8) can be placed in a desired position inside the frame (1) parallel to the transverse for supports (2) and (3). As is apparent from FIG. 8, screws (13) are provided which pass through holes (12) and are screwed into threaded holes (6) to hold the clamping plates in position.

The rear edge of the clamping plate (7) is provided with a plurality of evenly spaced prismatic recesses (14). Between the recesses (14) there is provided a narrow, smooth section of the longitudinal end edge. Further, the clamping plate is provided with a plurality of bore holes (15) disposed in the plane of the frame, transversely in the longitudinal direction of the clamping plate (7). They lie on the longitudinal end edges of the clamping plate (7) in a narrow flat area between the prismatic recesses. In addition to these, there may be many more bore holes (15a) located in the region of the clamping plate end.

The view of the drilled holes (15), respectively (15a), is clearly visible in FIG. These are threaded holes, which are, however, expanded to the exact nominal size. Preferably, this nominal size is approximately between the internal thread diameter (k) and the nominal thread diameter (g). For example, the drilled threaded hole (15), respectively, (15a) is provided with a metric M 10 thread having a nominal thread diameter of 10 mm. Internal thread diameter

The M 10 is approximately 8.2 mm. Consequently, it has a nominal diameter n up to which the threaded boreholes 15, respectively (15a), 9 mm, are expanded.

This variant allows the boreholes (15), respectively (15a), to be used in three ways: first, it is possible to tighten the M 10 screw or the screw; secondly, it is possible to insert round bars 9 mm in diameter which are reliable and can be inserted widely and easily into the boreholes (15), respectively (15a); and third, M8 screws or M8 screws can be pierced.

FIG. 4-6 is a second exemplary embodiment of a clamping plate 107, showing a side and bottom cross-sectional view of the clamping plate (107). The clamping plate (107) is manufactured as an elongated steel member with a rectangular cross-section. A flat projection (111) is provided at both ends of the clamping plate (107). The length of the clamping plate (107) without protrusions (111) corresponds to the measured empty width of the frame (101) between the two longitudinal supports (104) and (105), which are exemplified in FIG. The projections (111) are dimensioned such that they overlap at least partially the visible tops of the longitudinal carrier (104) and (105) threaded boreholes (106) and lie on them.

The projections (111) are provided with elongated holes (112) disposed transversely to the clamping plate (112) so that they position and release the clamping plate (107) placed on the frame (101). The length of the hole (112) is slightly more than the distance between adjacent threaded bore holes (106), so that each clamping plate (106), respectively (108), (Fig. 7) could be positioned at a desired location in the center of the frame (101). parallel to the transverse supports (102) and (103). As can be seen in FIG. 7, screws (113) are provided which are pierced through holes (112) and screwed into threaded drill holes (106), thereby holding the clamping plate in its position.

The clamping plate (107) (cf. Fig. 4) is provided with a plurality of bore holes (115) disposed in the longitudinal direction of the clamping plate (107) in the plane of the frame 5. These are arranged respectively in a narrow, low area of the longitudinal end of the clamping plane (107) in relation to each other. Further, further boreholes (123) (Figs. 5 and 6), which are perpendicular to the boreholes (115) and in a plane perpendicular to the frame, still exist. The boreholes (123), the exact view of which is seen in the section shown in (Fig.6), have a normal thread and serve to accommodate the clamping hoop (not shown). Finally, the clamping plate (107) is provided with guide planes (124) extending along adjacent longitudinal edges.

With regard to the boreholes (115), the same conditions apply as for the boreholes (15) in the clamping plate; for this, reference may be made to Fig.3, which logically applies in both cases.

As already mentioned, Fig. 8 is a schematic representation of a common support frame denoted by a unit (1), which can be fastened by said means to the machine table (not shown). The frame (1) has two transverse supports (2) and (3) as well as two longitudinal supports (4) and (5) which form a rectangular, rigid structure. Both longitudinal supports (4) and (5) are provided with threaded drill holes (6) perpendicular to the plane of the frame and spaced in succession by longitudinal supports (4) and (5).

In this example, the frame (1) is provided with a first pair of clamp plates (7) and (8) and with a second pair of clamp plates (107) and (108). This variant is clear from FIG. 1-3, wherein the clamping plate (7) is shown from below and in partial section, and, respectively, from 4-6, where the clamping plate (107) is also shown in a side view, from below and in section. It goes without saying that the clamping plate (8) may be formed just like the clamping plate (7) and the clamping plate (108) may be formed as the clamping plate (107).

Returning to FIG. 8, the advantage of this option will be further illustrated. As an example 5, six cylindrical parts (16) may be inserted in a frame (1) perpendicular to the plane of the frame with their axes. In this orientation both clamp plates (7) and (8) are used. The parts (16) are arranged in the prismatic recesses (14) respectively and at the same time are spaced evenly. The clamping plate (7) can be firmly tightened to the desired position by the screws of the frame (1).

The clamping plate (8) is then disposed in the frame (1) until it slides into the parts (16) and is easily fixed by a screw (13) on both longitudinal supports (4) and (5). Here, M8 threaded dowels (17) are inserted through each of the sliding pairs of bore holes (15) on both clamping plates (7) and (8) and are provided with a nut (18). The latter are evenly arranged in a row such that the clamping plate (8), which is so easily fixed to the sides (4) and (5) of the frame, is attracted to the parts (16) and tightened. Finally, both screws (13) of the clamping plate (8) can be tightened securely.

Due to the provision of a threaded pin (17) on either side directly below each piece (16), any elastic deformation of the clamping plate (7) and (8) is prevented and all parts (16) are securely fastened.

As a second example, a rectangular attachment of parts (19) having an uneven upper surface and an inaccurate shape may serve. For this purpose, the clamping plate (107) is placed in a suitable position in the frame (1) and tightened by means of both screws (13) on both longitudinal supports (4) and (5). The second clamping plate (108) is then freely spaced relative to the clamping plate (108), this distance being slightly greater than the current width of the piece (19).

The part (19) can then be placed on a support plate (124) between both clamping plates (107) and (108) (the arrangement and implementation of which on the underside will be discussed below), determining their height arrangement and parallel alignment with respect to the frame plane. At the end, the clamping plate (108) is slightly moved against the upper plane (20) of the part (19) and is easily fixed by means of both screws (13) on the longitudinal supports (4) and (5) of the frame (1). The two ends of the piece (19) are then disposed between the two pairs of drilled holes (115), respectively (115a), between the two clamping plates (107) and (108).

which are screwed in with M8 threaded pins (17) and then manually screwed in so that they lie directly on the lateral plane of the clamping plate (107). The three remaining bore holes (115) of the clamping plate (108) located in the region of the upper plane (20) of the workpiece are then screwed and tightened to make the M10 screws (22) firmly pressed between the screws (22) and the clamping plate (107). ). Finally, the retaining screws (13) of the clamping plate (108) can also be tightened securely.

An advantage to be noted here is that the threaded pins (17) can be positioned so close to the ends of the parts that relatively elastic deformation of the clamping plates (107) and (108) is eliminated during clamping or, accordingly, may remain very slight.

7, there is provided a main, defined carrier frame (101) which can be mounted with said means on a machine tool table (not shown). The frame (101) has two transverse supports (102) and (103) as well as two longitudinal supports (104) and (105) which together form a rectangular rigid structure. Both longitudinal supports (104) and (105) are provided with drill holes (106) perpendicular to the plane of the frame and spaced in a row at equal distances along the longitudinal supports (104) and (105).

In this example, the frame (101) is provided with two identical clamping plates (107) and (108). Such an implementation follows directly from FIG. 4-6, where a side view, a bottom view and a cross-sectional view of the clamping plate (107) are shown. The clamping plate (107) is manufactured as an elongated steel member having a rectangular cross-section. Flat ends (III) are provided on both ends of the clamping plate (107). The length of the clamping plate (107) without protrusion (III) corresponds to the measured open width of the frame (101) between the two longitudinal supports (104) and (105). The projections (111) are dimensioned such that they overlap at least partially with the boreholes (106). which are provided on the upper sides of the longitudinal supports (104) and (105) and rest on them.

Referring back to FIG. 7, other advantages of this embodiment are illustrated. An example is a rectangular piece (116) secured in a frame (101). For this purpose, the clamping plate (107) is disposed in a suitable position in the frame (101) and is securely fastened with both screws (113) on the longitudinal supports (104) and (105). The second clamping plate (108) is then placed loosely over a distance to the clamping plate (107) so that this distance approximates the measured width of the piece (116). Finally, the support rods (121) with a diameter of 9 mm are inserted into the properly spaced holes (115) of the clamping plate (107) so that they extend somewhat into the space between the two plates (107) and (108).

The parts (116) can then be located on the plate (124) between the two plates (107) and (108) and between the two support rods (121), where they are fixed by their length and mutual distance. Finally, the clamping plate (108) is pushed a short distance from the lateral plane of the part (116) and is easily fixed by both screws (113) on the longitudinal supports (104) and (105) of the frame (101). The M8 threaded pins (117) are then inserted through both pairs of drilled holes (115) at both ends of the part (116), respectively, and are manually screwed one by one (118) so that located directly on the lateral plane of the clamping plate (108). The M10 screws (122), which are then drilled into the four suitable boreholes of the clamp plate (108), are opened and tightened so that each part (116) is firmly pressed between the screws (122) and the clamp plate (107). . Finally, the clamping screws (113) of the clamping plate (108) can also be tightened firmly.

Here, too, there is the advantage that the threaded pins (117) can be located very close to the ends of the parts, so that the possible elastic deformation of the clamping plates (107) and (108) is very small.

It goes without saying that, in a corresponding manner, many small details having different widths can be anchored side by side. Differences in dimensions can easily be compensated by deeper or smaller screwdriving (122).

The complete mounting frame (1) with clamping plates (101), respectively, of the present invention is extremely stable at a relatively low weight, since the clamping means (threaded pins (17), (117), screws (22), respectively (122) ) can always be placed directly next to or very close to the part, respectively to the parts, and at the same time the clamping plates can be placed relatively easily and in a narrow space, especially for the frame supports (2), (3), (4) and (5). ), (102), (103), (104) and (105), respectively, where they have no clamping force, they only have the function of holding the clamping plates (7) and (8), respectively (107) and (108) , and at the same time the details (16) and (19), respectively (116), in the required position The fastening plates according to the present invention can also be used in a wide variety of applications for mounting large and small, single or multiple customize only a few interconnected key elements (clamp plates, threaded pins, screws, support rods).

Claims (6)

1. A clamping plate is used in a machine tool fixture, wherein the fixture has a rectangular frame (1; 101) with two 5 longitudinal supports (4, 5; 104, 105) provided with threaded bore holes (6; 106) and two transverse supports (2, 3; 102, 103), characterized in that the clamping plates (7, 8; 107, 108) respectively, at their respective ends (11; 111), are mounted on longitudinal supports (4, 5; 104, 105) in the longitudinal direction with the possibility of displacement, and that the clamp plates (7, 8; 107, 108) are in the mounting state. 10 having bore holes (15, 15a; 115) disposed parallel to the longitudinal supports (4, 5; 104, 105), optionally provided with fastening screws (17, 22; 117,122) and / or with support bars (121). 2. A clamping plate according to claim 1, characterized in that it has A plurality of predetermined nominal size (n) through-hole drilled holes (15, 15a; 115) extending perpendicular to the longitudinal direction of the perpendicular fastening plates (7, 8; 107, 108). 3. A clamping plate according to claim 1 or 2, characterized in that it 20 has a flattened end region (11; 11) that rests exactly on the intended sides of the frame (11; 11). 4, 5; 104, 105) with threaded boreholes (6; 106) and provided with a hole (12, 112) extending longitudinally in the frame, corresponding to the threaded boreholes. Clamping plate according to one of the preceding claims 1 to 3, characterized in that the threaded boreholes (15, 15a; 115) of the clamping plates (7, 8; 107,108) are widened in dimension (n) to match as closely as possible. the average value of the nominal thread diameter (g) and the internal thread diameter (k). The clamping plate according to one of the preceding claims 1 to 4, characterized in that a plurality of prismatic recesses (14) are provided on the longitudinal surface of the clamping plate (7, 8). 6. A clamping plate according to claims 2 and 5 or 4 and 5, characterized in that the individual threaded boreholes (15) of the clamping plate are disposed between adjacent prismatic recesses (14), respectively. Clamping plate according to one of the preceding claims 1 to 6, characterized in that it is provided with a plurality of identical bore holes (123) perpendicular to the plane of the frame. Clamping plate according to one of the preceding claims 1 to 7, characterized in that two adjacent edges extending parallel to the frame plane are provided with guide planes (124). A clamping plate according to any one of the preceding claims 1 to 8, wherein 15 in that the clamping plates (107,108) have separate threaded boreholes (15; 115) are provided with special screws (22; 122) for strong compression of the parts (19; 116) between the two clamp plates (107,108). Clamping plate according to one of the preceding claims 1 to 9, characterized in that 20 in that the individual threaded boreholes (15; 115) are provided with support bars (121) projecting from the threaded boreholes. 11. Attachment for workpiece machining, having a rectangular frame with two longitudinal supports and two transverse arms 25, also a clamping means for fixing the part on a frame having a continuous plate-like compression linkage slidable parallel to the transverse support, characterized in that the clamping means comprises a support frame (7) mounted at least freely on the rectangular frame (1, 101). , 8; 9, 10, 17; 107, 108, 117), which has two per 30 interlocking means (17, 18; 117, 118) for connecting the clamping plates (7, 8, 9, 10; 107, 108) to each other, which respectively have the ability to be displaced by their longitudinal supports (11,111). 4, 5: 104, 105) are secured in the longitudinal direction and mounted thereon, respectively, and have bores (15, 15a; 115) lying against each other on the clamping plates (7, 8, 9, 10; 107, 108) lying against each other during installation. arranged parallel to the longitudinal supports (4, 5; 104,105) for optionally inserting the mounting screws (17,22; 117,122). 12. Anchoring device according to claim 11, characterized in that the clamping plates (7, 8, 9, 10; 107, 108) have a plurality of boreholes (15, 15a) extending in the longitudinal direction of the clamping plates, extending through the intended nominal dimension, extending through the stator. 115). 13. Anchoring device according to claim 11 or 12, characterized in that the opposite sides (4, 5; 104, 105) of the frames (1; 101) are provided with one row of bore holes (6) perpendicular to the plane of the frame. ; 106). Anchoring device according to one of Claims 11 to 13, characterized in that the clamping plates (7, 8, 9, 10; 107, 108) have flat ends (11; 111) which lie flat on the intended sides of the frame (4, 5; 104, 105) with threaded bore holes (6; 106) and provided with a longitudinal direction of the frame 20 spaced holes (12; 112) corresponding to threaded boreholes (6; 106). Fastening device according to one of Claims 11 to 14, characterized in that the screw holes (7, 8, 9, 10; 107, 108) of the clamping plates are threaded. 25 (15, 15a; 115) are expanded by dimension (n) to correspond as closely as possible to the mean value of the nominal thread diameter (g) and the internal thread diameter (k). Anchoring device according to one of claims 11 to 15, characterized in that the longitudinal end plane of the clamping plates (7, 8, 9, 10) is provided with 30 numerous prismatic excavations (14). Fastening device according to one of Claims 12 or 15 and 16, characterized in that the individual threaded boreholes (15) of the clamping plate are respectively located between two adjacent prismatic recesses (14). Clamping device according to one of Claims 11 to 17, characterized in that the clamping plates (107, 108) are provided with a plurality of equally spaced drilled holes (123) perpendicular to the plane of the frame. Anchoring device according to one of Claims 11 to 18, characterized in that it is different 10 in that the clamping plates (107, 108) are provided with two adjacent ribs (124) extending parallel to the frame plane. Clamping device according to one of Claims 11 to 19, comprising two clamping plates (9,10; 107,108) arranged in parallel to one another, characterized in that the clamping plates (9,10; 107,108) have separate threaded boreholes (15; 115). ) are provided with special screws (22,122) for firmly clamping the part (19; 116) between the two clamp plates (9,10; 107,108). 21. Anchoring device according to claim 20, characterized in that the individual threaded boreholes (15; 115) are provided with support rods (21,121) projecting from the threaded borehole. The fastening device of claim 20 or 21, wherein 25 so that threaded pins (17,117) pass through one of a plurality of threaded boreholes (15, 15a; 115) selected from both clamping plates (7, 8, 9, 10; 107, 108).