FR2468027A1 - ROLLING CIRCULATION SKATE - Google Patents

Abstract

The technical field of the invention is that of runners with roller circulation of the type comprising a carrier body with a flat surface, two return elements and roller guide members. The technical problem posed consists in providing such a pad whose manufacture is more economical. According to the invention, the bearing surface of the bearing body 1 coincides with the plane which limits the bearing body 1 on the side of this bearing surface, a plane in which only holes and at least one groove 38 are formed, and in that the members guide rollers 5, interconnected by assembly elements threaded through the bores, are fixed on the carrier body 1. The invention is mainly used for tool trolleys, sliding tables.

Description

Roller skate.

  The present invention relates to a skid

  roller circulation for supporting with the possibility of moving

  longitudinally and to guide in a straight line the machine

  such as, for example, tool trolleys, sliding tables

  etc., on a flat running surface.

  When using such constructions

  on machine tools, the high rigidity of these skids in the direction

  perpendicular to the guide plane is a fundamental specification.

  mental, apart from the precision of the rectilinearity of displacement and

the reliability of the service.

  Roller skid constructions such as, for example, the solutions described in U.S. Patent are already known. 3,111,350 or in the Patents of the Federal Republic of Germany DT-TS 2,239,782 and 2,416,198, in which are

  provided, between the rollers or on the journals of these rollers,

  intermediates that prevent the rollers from escaping from the skids

  and guarantee the parallelism of the axes of the rollers. However, the

  the presence of these intermediate elements reduces the number of carrier rollers on the loaded segment, which also reduces the load capacity, the

  useful life and the rigidity of these constructions.

  We also know constructions of

  rollers such as, for example,

  according to the patents of the Federal Republic of Germany DT-TS 2,116,322 and 2,421,328 or the U.S. patents. 3,230,018 and 3,920,289, in which the rollers are prevented from falling during assembly and transport by providing journal journals which are engaged in

  a groove in the carrier body. That they be trained directly

  on the carrier rollers or that they be formed on

  intermediaries or on intermediate rolls, these

  roller grooves require groove machining which is an ope-

  costly and laborious anti-economic ration; on the other hand, in the case of the use of additional intermediate pieces, due to the decrease in the numbers of the load-bearing rollers, the capacity of the

  load and the useful life of the roller circulation pad are reduced.

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  In all roller skates

  As already known, the bearing surface of the carrier body, that is to say the bearing surface, is provided in its lower part with a trench-shaped recess. The precise machining of this recess can only be performed by a delicate and expensive operation of grinding ribs, the production and control of flatness are very problematic and the surface condition that can be obtained in this way is much rougher than that obtained by honing plan. In most constructions already known, the screws that fix the return elements of the rollers to the body

  carrier are screwed into threaded holes in the carrier body.

  Such constructions are described, for example, in the US Pat.

  Federal Republic of Germany 2 202 085 or in the U.S. Patent

  This fastening method assumes the presence of a soft core in the carrier body so that threads can be cut in this carrier body. Unfortunately, a carrier body having a soft core has a lower load capacity and a shorter life

  that the homogeneous carrier bodies hardened to heart.

  The object of the invention is to create a

  roller skate truction, in particular roller circulation slider for longitudinally displacing and guiding movable machine elements in a straight line, which can be manufactured more economically than the already known constructions, while maintaining or improving operating characteristics

the most essential.

  According to the invention, the carrier body which transmits the charge is of a configuration such that the surface plane

  carrier carrying the load is not interrupted by any part

  lante, so that this bearing surface can be machined in large

  series, economically and very precisely on flat grinding machines.

  The surface defect can be measured reliably and can be

  kept at a low value since, by ground breaking, it is possible to obtain a

very smooth surface.

  In the body support surface of the body

  carrier, that is to say in the carrier surface, are formed one or more

  grooves or one or more holes which allow the use, centering and fixing of guiding members; inexpensively manufactured rolls, for example by precision foundry, and injection molded return elements. The screws for fixing the internal roller guide members can be screwed into the threaded holes of the upper roller guide members, so that the mounting of the device is very simple; In the body hardened to the heart, do not

  are formed that grooves and holes, the holes provided for the two ex-

  trenches of the carrier body for receiving mild steel rods. In

  these rods are provided with threaded holes intended for mounting the ele-

removals.

  The injection molded return elements are provided with cavities forming lubricant reserves and, moreover, they form the guide for the substantially semi-cylindrical shaped inserts, which constitute the raceway of the

  rollers in the return areas. -

  Other features and benefits of

  the invention will become apparent from the following description. the

  attached drawings, given by way of example only - FIG. 1 is a longitudinal section of a roller circulation pad according to the invention taken along line I-I of FIG. 2; FIG. 2 is a section of the pad of FIG. 1, taken along the line II-II; FIG. 3 is a longitudinal section

  horizontal taken along the line III-III of FIG. 1.

  Figs. 1 to 3 show a construction in which the rollers are protected from falling during transport and mounting of the lower guide bars independent of each other, these guide bars also guiding the rollers

- straight line during the service.

  Fig. 4 shows, on the left, a view of

  in another embodiment of the roller circulation pad according to the invention and, on the right, the bottom view of the carrying body provided with

  a single groove s.ervant to guide the guide frame of the rollers.

  FIG. 5 is a longitudinal section of the construction according to FIG. 4; FIG. 6 is an axonometric view of a frame for guiding rolls in one piece;

  FIG. 7 is a section of the construction

  the roller circulation pad according to FIG. 5.

  Figs. 4, 6 and 7 relate to a construction in which the rollers are protected from falling during the

  transport and assembly by a single frame in one piece, the orientation of which

  tation is provided by means of a single groove.

  FIG. 8 is a section of a roller circulation pad according to the invention, taken through the screws for fixing the lower and upper roller guide members; FIG. 9 is a section of the next skate

  there Fig. 8, taken through the screws which serve to fix the skate to

  the application of rollers to the machine tool which is equipped with this pad; FIG. 10 is a half section of the roller circulation pad according to the invention, which comprises an oblique groove and a lower roller guide member adapted in this groove. Figs. 8 to 10 are cuts of a skate

  roller circulation according to the invention.

  FIG. 11 is a cross-section of another roller circulation pad according to the invention taken along the line XI-XI of FIG. 12; FIG. 12 is a top view of the skate

  roller circulation of FIG. 11.

  In the drawings, it is obvious that the

  The essential element of the roller circulation pad according to the invention consists of the carrier body 1 made of hardened core material in which cylindrical through-holes 34, 35, 36 are formed.

  39 as well as grooves 8, 38. The load which is exerted on the body

  tor is transmitted by rollers 2 to a plane rolling surface 3, and vice versa. In the plane that limits the carrier body and that faces

  at the running surface 3 is the carrier surface 4, by the in-

- 5 - 2468027

  intermediary from which the transmission of forces occurs. In the plane of the carrier surface 4, are formed one or more grooves or

  one or more holes used to mount the shoe.

  The rollers 2 are guided laterally by lower guide bars 5 whose ribs 6 are engaged in the shoulders 28 formed at the ends of the rollers, so that

  that they prevent the rollers 2 from falling during transport and the

  floor. The ribs 7 of the lower guide bars 5 are engaged in grooves 8 or 38 of the carrier body 1 and, in this way, they positively define the position of the lower guide bars.

  - 5. The lower guide bars 5 are connected to a top plate

  10 with screws 9, these screws 9 being threaded through the holes 34 of the carrier body 1 and screwed into the threaded holes 32 of

  the upper guide plate 10, as shown in FIG. 8.

  The rollers 11 which are not in contact with the bearing surface 4 are guided by the return elements 12 towards the return segment 13 of the raceway and, from there, returned under

  the carrier surface 4. The return elements 12 are attached to the carrier body

  1 by screws 14 and their position is defined by studs 29.

  The threaded barrels of the screws 14 are threaded through bores 39 of the return elements 12 and screwed into threaded bores 33 of the rods 15.

  housed in the cylindrical through holes 36 of the carrier body 1.

  The ground surface 16 of the rods 15 serves to positively determine posicion

  rods 15 which is suitable for screwing.

  The ribs 17 of the deflection elements 12 define

  the position of an insert 18 for guiding the rollers

  11 in the direction change segment of the tan

  say that the shoulder 24 forms a lateral limitation. The ribs 19 of the deflection elements 12 contribute to return the rollers 2 or 11 of 180 to move them from the bearing surface 4 to the return segment 13 of the raceway and vice versa. The ribs 20 of the return elements 12 are in contact with the rolling surface of the rollers 2 or 11. The cavity 22, used for lubricating the rollers, is closed by

  a stopper 21 provided with a rim. For cleaning the rolling surface

  3, there are provided squeegees 23 engaged in the grooves of the ele-

references 12.

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  The indications given above concern

  also the construction shown in Figs. 4 to 7, at this

  simple difference that this latter construction includes, replacing

  lower guide bars 5, a one-piece guide frame 25 which differs from the guide bars 5 only by its

  construction, while it is identical to these bars in that

  identify his mode of work. The centering of the guide frame 25 is

  by a single groove 8, as can be seen in FIG. 4. The guiding frame 25 is shown in FIG. 6 by an axonometric view. Fig. 7 is a section of a skate construction to

  roller circulation which is equipped with the aforementioned guide frame 25.

  Fig. 8 is a section of a circular skate

  rolls according to the invention, taken through the screws 9 which re-

  connect to each other the lower or upper roller guide members. The rib 26 of the upper guide plate 10 prevents the rollers from falling during transport and assembly of the same

  way that the rib 6 of the lower guide bars 5.

  Fig. 9 is a section of a circular skate

  tion of rollers according to the invention, taken through the screws 27 which

  assemble the roller circulation pad with the machine which is equipped with

Pee.

  Fig. 10 shows a form that can be adopted

  ter for the section of the roller circulation pad according to the invention

  in which the grooves 38 of the carrier body 1 have a configuration

  oblique, similar to that of the bearing surfaces 31 of the ribs 37 of the lower guide bars 5 which cooperate with these grooves. Figs. 11 and 12 show a form of construction of a roller circulation pad in which the lower guide member of the rollers, which may be constituted by a guide bar 5 as well as by a guide frame 25, is centered at by means of studs 34 which are threaded into bores 35. Between the upper guide plate 10 and the carrier is clamped a bent plate 36 which covers the unloaded upper row of rollers 11 and the ends of the return members 12 which are open up and, in any case, avoids falling rollers

  It during transportation or assembly.

  It can be seen in Figs. 2, 7, 8 and 9 that the section of the carrier body 1 has approximately the shape of a U,

  the plane of the bearing surface being interrupted only by grooves

  holes and holes, that is to say that this plane does not have a protruding part, so that the bearing surface can be machined so

  accurate and economical on flat grinders or rotary machines

  flatness and that their flatness can be easily and easily controlled

  decision. Since the carrier body 1 is not interrupted by any sharp-angled cavity, it can be achieved without inconvenience in a material

  hardened to the heart, which guarantees a longer life.

  The rollers are also made of hardened steel. The rollers are contiguous over the entire length of the raceway, that is to say also under the carrying surface 4, of

  so that the space below the carrier surface 4 is effectively used.

  because of this fact, one can obtain from the construction a great

charge capacity.

  The rods 15 are advantageously manufactured

  made of mild steel, as well as the assembly screws 9 and 27.

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Claims (6)

CLAIMS) - Roller roller for longitudinally displacing and guiding in a straight line moving machine elements on a planar rolling surface of the type comprising a carrier body having a carrier surface plane facing the running surface, two return elements and roller guide members which together form, for a series of rollers closed on itself, a straight raceway segment, a return segment of the raceway and two return segments of the raceway which connect to each other the first two rolling segments, characterized in that the carrier surface (4) of the carrier body (1) coincides with the limiting plane. the carrier body (1) on the side of this carrier surface (4), plane in which are formed only bores (34, 35) and at least one groove (8, 38), and in that guide members of the rollers ux (5, 25, 10), interconnected by connecting elements threaded through the bores (34, 35), are attached to the carrier body (1).   2) - Roller slider according to Claim 1, characterized in that the lower guide member   rollers is constituted by a guide frame (25) provided with a centering pin (7).   Roller slider according to Claim 2, characterized in that on the plane which limits the carrier body (1) towards the bearing surface (4) is formed   a groove (8) for centering the guide frame (25).   40) - Roller slider next   Claim 1, characterized in that the guide member of the rollers   is composed of independent guide bars (5) provided with   each of a centering projection (7, 37).    Roller slider according to Claim 4, characterized in that, on the plane which limits the carrier body (1) towards the carrier surface (4), there are provided   grooves (8, 38) for centering the guide bars (5). 9 2468027   6) - roller roller according to claim 1, characterized in that, in the plane which limits the carrier body (1) on the side of the bearing surface (4), are provided holes   therethroughs (35) for centering the lower guide member of the rollers   WPL. ) - Roller skid following   any one of claims 1 to 5, characterized in that the sur-   lateral side for centering the grooves (38) in the carrier body (1) is arranged obliquely and in that the adjacent bearing surfaces   (31) centering protrusions (37) of the guide bars (5) which engage   in the carrier body (1) are also provided with a surface area   adapted to one of the side faces of the grooves (38).   ) - Roller skid following   any of claims 1 to 7, characterized in that at the ends   of the peripheral surfaces of the rollers (2, 11) are formed   shoulders (28) to prevent the rollers from falling out of assembly and transport.   ) - Roller skid following   any of claims 1 to 8, characterized in that the barbs   guide flanges (5) or the guide frame (25) have projections (6) which engage the shoulders (28) formed at the ends of the rollers. 0) - Roller slider next   any of the claims there9, characterized in that the persons   threaded cages (32) which receive the screws (9) for fixing the guide bars (5) are formed in the guide plate (10) provided with a projection (26) and which forms the upper guide member rollers to prevent unloaded rollers (11) from escaping from the return segment of the raceway (13).   110) - Roller skid following   any one of claims 1 to 10, characterized in that both   ends of the carrier body (1) are formed parallel holes (36). to the axis of the rollers (2, 11). - 10 -   ) - Roller skid following   any of claims 1 to 11, characterized in that, in   the bores (36) parallel to the axis of the rollers and which are provided at both ends of the carrier body (1), are provided with rods (15) in which threaded bores (36) are formed for receiving the   screw fasteners (14) of the return elements (12).   ) - Roller skid following   any of claims 1 to 12, characterized in that in   the bores (36) parallel to the axis of the rollers, open bores   (39) perpendicular to said bores (36).   14) - Roller skid following   any of claims 1 to 13, characterized in that, in   the return elements (12) are provided with cavities (22) for form a reserve of lubricant.   150) - Roller slider according to Claim 14, characterized in that the return elements (12) are provided with bores (30) which can be closed after the filling of the   cavities (22) forming lubricant reserves.   Roller slider according to Claim 15, characterized in that the bores (30) for filling the lubricant reserves are provided with a plug (21) provided with a rim.   ) - Roller skid following   any of claims 1 to 16, characterized in that   the upper guide plate (10) and the carrier body (1) are arranged with a folded plate (36) for covering the unloaded upper rollers (11) and the parts (37) of the return elements which are open upwards. as well as to prevent the rollers (11) from escaping from the pad.