JP2006090510A - Sliding device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an innovative sliding device capable of dispensing with troublesome adjustment of accuracy, and inexpensively achieving sliding of longitudinal curved line in the X-Y biaxial direction with high accuracy, and having superior practical utility. <P>SOLUTION: In this sliding device composed of a shaft body 1 and a sliding body 2 sliding on the longitudinal curved line to the shaft body 1, a longitudinally-curved load path 6 is formed between the shaft body 1 and the sliding body 2, a plurality of rolling elements 3 rolled and moved on the load path 6 are mounted on the load path 6, the shaft body 1 is mounted on a first rotary table 4, the sliding body 2 is mounted on a second rotary table 5, the shaft body 1, the sliding body 2 and the second rotary table 5 are rotated when the first rotary table 4 is rotated, and the sliding body 2, the shaft body 1 and the first rotary table 4 are not rotated when the second rotary table 5 is rotated. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a sliding device.

  Conventionally, there has been proposed a sliding device shown in FIG. 1 in which a sliding body 42 is provided so as to slide along a longitudinal curved line with respect to a shaft body 41.

  Specifically, the shaft body 41 is provided with a first load portion constituent material 47 in which a first load groove 47a having a longitudinally curved shape is formed, while the second load groove 48a having a longitudinally curved shape is provided in the sliding body 42. The first load groove 47a and the second load groove 48a are opposed to each other to form a load path 43, and the load path 43 is transferred to the load path 43. A plurality of rolling elements (not shown) that move and move are disposed, and these rolling elements are disposed at predetermined intervals by a plate-shaped rolling element holder (not illustrated) that moves on the load path 43. .

  In the case of the sliding device of FIG. 1, the load path 43 is provided at one place on each side. In the figure, reference numeral 44 is a servo motor for driving the worm 46, 45 is a bearing for receiving the worm 46, and 49 is a stopper screw for preventing the rolling element cage from falling off.

  Incidentally, the sliding device of FIG. 1 slides in a longitudinal curve line in one axial direction. For example, when it is desired to obtain longitudinal curvature line sliding in the XY biaxial direction, these two conventional sliding devices are used. A device in which one side is rotated 90 degrees with respect to the other is used.

  That is, for example, as shown in FIGS. 2 and 3, when the sliding device A that slides in the vertical direction in the X direction and the sliding device B that slides in the direction Y in the Y direction are overlapped, If one of them is moved, it is possible to slide in the longitudinal curve line in the X direction or the Y direction. Of course, it is possible to slide in the longitudinal curve line in the XY direction by moving both of them simultaneously. In the figure, reference numeral 50 denotes a scale plate indicating the amount of movement of the sliding body 42.

  Also, for example, in Japanese Patent Laid-Open No. 3-270817 (Patent Document 1), the sliding body of the lower sliding device and the shaft of the upper sliding device are integrated, so that the two are simply as described above. Japanese Patent Laid-Open No. 2002-189089 (Patent Document 2) discloses a structure that can be made lower than when two sliding devices are stacked. There is also disclosed a configuration in which a sliding body formed on a partially spherical convex surface that fits with a concave surface is provided to achieve longitudinal curve line sliding in the XY direction.

JP-A-3-270817 JP 2002-189089 A

  However, when two sliding devices are overlapped, the height of the longitudinal curved line sliding center of one sliding device and the longitudinal curved line sliding center of the other sliding device are not the same, It is designed so that the vertical bending line sliding radius of the lower sliding device is larger than the vertical bending line sliding radius of the upper sliding device so that the two vertical bending line sliding centers coincide with each other. However, a minute error due to a processing error or the like is inevitable, and in order to achieve high accuracy, the cost has to be high.

  In addition, the shaft body, the sliding body, the first load part constituent material, the second load part constituent material, etc., which constitute the sliding device that slides in the longitudinally curved line in the first place, form a longitudinally curved load groove, etc. Special processing is required and it is very expensive, and a sliding device in which two of them are stacked is extremely expensive.

  Further, the sliding device described in Patent Document 2 does not require the work of making the two longitudinal curved line sliding centers coincide with each other, but it is extremely important to precisely control the sliding body that makes sliding contact with the rotary table on the spherical surface. In addition to being troublesome, it can be used only in a very limited part of the structure due to its very low load. In addition, lack of rigidity is unavoidable, and it is extremely impractical and cannot be practically used. Met.

  The present invention solves the above-mentioned problems, and realizes longitudinal curve line sliding in the XY biaxial direction with a pair of shaft bodies and sliding bodies, and does not require troublesome precision adjustment and is highly accurate. It is an object of the present invention to provide an epoch-making sliding device excellent in practicality that can obtain a longitudinal curved line sliding in the XY biaxial direction at a low cost.

  The gist of the present invention will be described with reference to the accompanying drawings.

  A sliding device including a shaft body 1 and a sliding body 2 that slides in a longitudinally curved line relative to the shaft body 1, and a longitudinally curved load path 6 between the shaft body 1 and the sliding body 2. The load path 6 is provided with a plurality of rolling elements 3 that roll along the load path 6, the shaft body 1 is provided on the first rotary table 4, and the sliding body 2 is When the first rotary table 4 rotates, the shaft body 1, the slide body 2 and the second rotary table 5 rotate, and when the second rotary table 5 rotates, the slide body is provided on the second rotary table 5. 2. The sliding device is characterized in that the shaft body 1 and the first rotary table 4 are configured not to rotate.

  Further, in the sliding device according to claim 1, the second rotary table 5 is provided with a second shaft 5a, and the sliding body 2 is provided on a bearing 7a for receiving the second shaft 5a. This relates to a sliding device.

  Further, in the sliding device according to claim 2, the sliding body 2 is connected to the second gear 12 fitted on the second shaft 5 a, and the second gearing 13 that meshes with the second gear 12. Is related to a sliding device characterized in that it is supported by a second rotary table 5.

  Further, in the sliding device according to any one of claims 1 to 3, the first rotary table 4 is provided with a first shaft 4a, and the shaft body 1 is provided on a bearing 7a that receives the first shaft 4a. The present invention relates to a sliding device.

  Further, in the sliding device according to claim 4, the shaft body 1 is connected to a first gear 8 fitted on the first shaft 4 a, and a first toothed body 9 that meshes with the first gear 8. Is related to a sliding device characterized by being supported by a first rotary table 4.

  Further, in the sliding device according to any one of claims 1 to 5, the longitudinal curved line sliding center of the sliding body 2 and the rotational centers of the first rotary table 4 and the second rotary table 5 are matched. The present invention relates to a sliding device.

  Further, in the sliding device according to any one of claims 1 to 6, when the sliding body 2 is in a horizontal state with respect to the shaft body 1, the rotation center of the second rotary table 5 and the rotation of the first rotary table 4 are provided. The present invention relates to a sliding device characterized in that the center is matched.

  Further, in the sliding device according to any one of claims 1 to 7, the load path 6 is provided with a rolling element holder 14 for holding the rolling elements 3 at a predetermined interval. This relates to a sliding device.

  Since the present invention is configured as described above, it is an epoch-making slidable excellent in practicality that does not require troublesome accuracy adjustment and can obtain a highly accurate longitudinal curve line sliding in the XY biaxial direction at low cost. It becomes a moving device.

  An embodiment of the present invention which is considered to be suitable will be briefly described with reference to the drawings showing the operation of the present invention.

  By changing the sliding direction of the sliding body 2, the same movement as the conventional device in which two sliding devices are superposed (inclination of the second rotary table 5) is possible, and the desired vertical bending line sliding is achieved. Can be realized easily. Therefore, it is not necessary to use two sets of the shaft body 1 and the sliding body 2, and it is possible to slide the longitudinal curved line in the XY biaxial direction by one set.

  Specific embodiments of the present invention will be described with reference to the drawings.

  The present embodiment is a sliding device that includes a shaft body 1 and a sliding body 2 that slides in a longitudinally curved line with respect to the shaft body 1, and the longitudinally curved portion between the shaft body 1 and the sliding body 2. A load path 6 having a shape is provided, and a plurality of rolling elements 3 that roll and move along the load path 6 are provided in the load path 6, and the shaft body 1 is provided on the first rotary table 4. The sliding body 2 is provided on the second rotary table 5, and when the first rotary table 4 rotates, the shaft body 1, the sliding body 2 and the second rotary table 5 rotate, and the second rotary table 5 rotates. In this case, the sliding body 2, the shaft body 1 and the first rotary table 4 are configured not to rotate.

  Specifically, in this embodiment, the shaft body 1 is provided on the first rotary table 4, the first rotary table 4 is installed and fixed, and the sliding body 2 is provided on the first rotary table 4. The sliding body 2 is provided with a second rotary table 5, and a workpiece is placed on the second rotary table 5 to cut the workpiece, or an optical fiber cable is placed to join the optical fiber cable. It is used for alignment of the time axis.

  Each part will be specifically described.

  As shown in FIG. 7, the shaft body 1 has two ridges 15 provided on the upper surface, and between the ridges 15, the shaft body 1 is screwed and rotated with a screwing portion 16 provided on the lower surface of the sliding body 2. A worm 17 is provided.

  Bearings 18 are respectively provided at both front and rear ends of the shaft body 1 on which the worm 17 is disposed, and a bearing fixing nut 35 is provided at an outer position of the bearing 18. The worm 17 is connected to a drive shaft of a drive motor 19 via a connecting body 36.

  Moreover, the 1st load part component material 20 in which the 1st load groove | channel 20a of the longitudinal curve shape was formed is attached to the outer side of the two convex strips 15, respectively.

  The shaft body 1 is fitted with a sliding body 2 having a substantially reverse concave shape in cross-sectional view in which sleeve portions 2b and 2c whose lower edges are curved on the left and right of the base portion 2a are suspended.

  On the inner side of both sleeve portions 2b and 2c of the sliding body 2, a second load portion constituting material 21 in which a second load groove 21a is formed is attached.

  A scale plate 22 is provided on one side of the shaft body 1 and the sliding body 2 to indicate the amount of movement of the sliding body 2 relative to the shaft body 1.

  In this embodiment, the first load portion constituting material 20 or the second load portion constituting material 21 in which the first load groove 20a or the second load groove 21a is formed on the shaft body 1 and the sliding body 2 is provided. However, the first load groove 20a may be directly formed on the shaft body 1 or the second load groove 21a may be formed on the slide body 2. In this case, the number of parts and the manufacturing process may be reduced. It will be possible to reduce the production cost.

  A load in which the rolling element 3 is disposed so that the first load groove 20a of the first load portion constituting member 20 of the shaft body 1 and the second load groove 21a of the second load portion constituting member 21 of the sliding body 2 face each other. A path 6 is formed.

  The first load groove 20a and the second load groove 21a are each formed in a substantially V shape in sectional view, and thus the load path 6 has a substantially rhomboid shape in sectional view.

  A rolling element cage 14 is disposed in the load path 6. This rolling element holder 14 is provided with a plurality of rolling element holding windows 14b, which are held in a state in which the rolling element 3 can roll, on the plate body 14a at predetermined intervals. Is inserted into a groove 37 formed at the center of the first load groove 20a and the second load groove 21a.

  The rolling element holder 14 holds a plurality of cylindrical rolling elements 3 at predetermined intervals. Specifically, the cylindrical rolling element 3 is disposed in a state where the rotation axis is inclined by 90 degrees with respect to the rotation axis of the adjacent rolling element 3. Reference numeral 23 in the figure denotes a stopper screw that prevents the rolling element holder 14 from falling off.

  In this embodiment, as the plate member 14a of the rolling element retainer 14, a thin metal plate is subjected to curved plastic processing so as to match the R shape of the groove 37, but the R shape of the groove 37 is adopted. You may employ | adopt what has flexibility in a curve direction so that it may become easy to adjust. This flexibility is caused by a flexible material such as a synthetic resin, or the plate body is composed of a fine plate body, and the fine plate body is flexibly connected via a link mechanism or the like. It may be caused by the configuration.

  As described above, this embodiment employs a known cross roller mechanism as a sliding mechanism, but other sliding mechanisms such as a configuration in which balls are arranged as rolling elements may be employed.

  The shaft body 1 is provided on a bearing 7 a that receives a first shaft 4 a provided on the first rotary table 4. As the bearing 7a, a cross roller bearing is adopted which is composed of an inner ring and an outer ring, and a plurality of rollers are disposed between the inner ring and the outer ring.

  The first shaft 4a is connected to a connecting lid 24a fitted to the central portion of the first rotary table 4 with a bolt 11a.

  The shaft body 1 is connected to a first gear 8 (worm wheel) fitted on the first shaft 4a.

  Specifically, the first gear 8 and the shaft body 1 are connected by a bolt via a support portion 25a that supports the bearing 7a.

  In addition, a first toothed body 9 (worm) that meshes with the first gear 8 is supported by the first rotary table 4.

  Specifically, as shown in FIG. 4, the first toothed joint 9 is inserted into an insertion hole (not shown) formed in the peripheral wall of the first rotary table 4, as in the second toothed body 13 described later. One end is supported by a bearing 30a and a fixing nut 29a provided outside the insertion hole, and the other end is connected to a motor 27a via a connecting body 26a and a U-shaped connecting body 33a. The U-shaped coupling body 33a includes a bearing (not shown), and the other end of the first toothed joint 9 is supported by a bearing and a fixing nut (not shown).

  Further, the first toothed joint 9 is prevented from moving outside the first rotary table 4 by the bearing fixing nut 29a for fixing the bearing 30a, and rotates by rotating the first rotary table 4 by driving the motor 27a. It is configured as follows.

  Further, as shown in FIG. 6, the sliding body 2 is provided with a bearing 7b, and a second shaft 5a provided on the second rotary table 5 is supported by the bearing 7b. As the bearing 7b, a cross roller bearing is adopted which is composed of an inner ring and an outer ring, and a plurality of rollers are disposed between the inner ring and the outer ring.

  The second shaft 5a is coupled to the coupling lid 24b fitted to the central portion of the second rotary table 5 with a bolt 11b.

  The sliding body 2 is connected to a second gear 12 (worm wheel) fitted on the second shaft 5a.

  Specifically, the second gear 12 and the sliding body 2 are connected by a bolt (not shown) via a support body 25b that supports the bearing 7b.

  Further, a second toothed body 13 (worm) that meshes with the second gear 12 is supported by the second rotary table 5.

  Specifically, as shown in FIG. 8, the second toothed joint 13 is inserted into the insertion holes 38b and 39b drilled in the peripheral wall of the second rotary table 5, and one end is located outside the insertion hole 38b. It is supported by a bearing 30b and a fixing nut 29b provided, and a motor 27b is connected to the other end via a connecting body 26b and a U-shaped connecting body 33b. The U-shaped coupling body 33b is provided with a bearing 10b, and the other end of the second toothed body 13 is supported by the bearing 10b and a fixing nut 28b.

Further, the second tooth combination 13 includes bearing fixing nuts 28b and 29 for fixing the bearings 10b and 30b.
The movement to the outside of the second rotary table 5 is prevented by b, and the second rotary table 5 is rotated by rotation by driving of the motor 27b.

  In the figure, reference numerals 31a and 31b are nuts for tightening the bearings 7a and 7b, 32 is a blocking lid for preventing foreign matter from entering the first rotary table 4, and 34a and 34b are supports for supporting the bearings 7a and 7b. Is the body.

  In the present embodiment, since the first rotary table 4 is fixed and the second rotary table 5 is set free as described above, when the first gear 9 that meshes with the first gear 8 is driven, Since the first gear 9 is connected to the fixed first rotary table 4, the first gear 9 rotates to rotate the first gear 8. On the other hand, when the second gear 13 that meshes with the second gear 12 is driven, the second gear 13 is connected to the second rotary table 5, but the second rotary table 5 is free. The second meshing body 13 rotates and rotates around the second gear 12, and the second turntable 5 also rotates with the rotation.

  In the present embodiment, the case where the first rotary table 4 is installed and fixed as described above has been described, but the same applies to the case where the second rotary table 5 is installed and fixed.

  That is, the first rotary table 4 and the second rotary table 5 are provided with driving motors 27a and 27b, respectively. The second rotary table 5 rotates separately from the rotation of the first rotary table 4. Configured to get.

  Therefore, when the shaft body 1, the sliding body 2 and the second rotary table 5 are rotated, when the second rotary table 5 is not to be rotated, that is, when the direction of the workpiece is not to be changed, the second The second toothed body 13 that meshes with the second gear 12 of the rotary table 5 is driven so that the second rotary table 5 is rotated by an equal amount in the direction opposite to the rotation of the shaft body 1 and the sliding body 2. As a result, the second rotary table 5 can be prevented from rotating, and various controls are possible.

  Further, in the present embodiment, the longitudinal curved line sliding center of the sliding body 2 and the rotational centers of the first and second rotary tables 4 and 5 coincide, and the sliding body 2 is in relation to the shaft body 1. In the horizontal state, the rotation center of the second rotary table 5 provided with the sliding body 2 and the rotation center of the rotary table 4 provided with the shaft body 1 are set to coincide with each other. In the present embodiment, the longitudinal curved line sliding center at the center position of the sliding body 2 and the rotational center of the rotary tables 4 and 5 are set so as to intersect (intersection O is shown in FIG. 7).

  That is, since the present embodiment does not overlap two sliding devices as in the prior art, the vertical bending line sliding center of one sliding device and the vertical bending line sliding center of the other sliding device. There is no possibility that the heights of the slide body 2 are not the same, and the operation of making the longitudinal curve line sliding center of the sliding body 2 coincide with the rotation center of the rotary tables 4 and 5 becomes extremely easy.

  The operation of this embodiment will be described.

  In the state of FIG. 4, sliding in the X direction similar to the longitudinal curved line sliding by the sliding device A of the conventional example of FIG. 2 can be performed. Further, from the state of FIG. 4, if the first toothed body 9 is rotated to rotate the shaft body 1 and the sliding body 2 by 90 degrees and the second rotary table 5 is rotated by 90 degrees in the reverse direction, the structure shown in FIG. The sliding in the Y direction similar to the longitudinal curved line sliding by the sliding device B of the conventional example can be performed.

  Further, when the first toothed body 9 is rotated from the state of FIG. 4 to rotate the shaft body 1 and the sliding body 2 by 45 degrees and the second rotary table 5 is rotated by 45 degrees in the reverse direction, the X-Y intermediate (Same as when the sliding devices A and B are both tilted (slid) in the conventional example of FIG. 3). That is, if the shaft body 1 and the sliding body 2 are rotated at an arbitrary angle as shown in FIG. 5, the same longitudinal curved line sliding in the XY directions as in the conventional example of FIG. 3 is possible.

  In addition, when the shaft body 1 and the sliding body 2 are rotated 90 degrees from the state of FIG. 4 and the second rotary table 5 is not rotated, the longitudinal curve line sliding direction changes to the Y direction, and the workpiece of the second rotary table 5 is changed. The mounting surface is also rotated 90 degrees. In this case, the mounting angle of the mounting surface can be freely set by rotating the second rotary table 5 at an arbitrary angle depending on the usage request.

  Naturally, if the first toothed combination 9 or the second toothed combination 13 or both are rotated, the operation of a normal rotating table (θ table) can be performed.

  Since the present embodiment is configured as described above, the sliding direction of the sliding body 2 can be changed, and the movement similar to that of the conventional device in which two sliding devices are overlapped (inclination of the second rotary table 5). ) Can be realized, and desired longitudinal curve line sliding can be easily realized. Therefore, it is not necessary to use two sets of the shaft body 1 and the sliding body 2, and it is possible to slide the longitudinal curved line in the XY biaxial direction by one set.

  In addition, since the longitudinally curved line sliding shaft is constituted by one, the state where the longitudinally curved sliding axis is shifted up and down in XY as in the conventional example does not occur.

  In addition, since an expensive (vertically curved line sliding) sliding mechanism can be configured in one set, an inexpensive XY gonio stage is obtained.

  In addition, the vertical curved line slide in the XY direction of the mounting surface, the rotation of the shaft body and the slide body around the first rotary table, the rotation around the second rotary table in the slid state, and all Operation can be performed independently or in conjunction.

  A compact system can be constructed by sharing the vertical curved line sliding related parts and the rotating related parts.

  Therefore, the present embodiment is an epoch-making sliding device that is excellent in practicality and can obtain a highly accurate longitudinal curve line sliding in the XY biaxial directions at low cost without requiring complicated accuracy adjustment. .

It is a structure explanatory schematic perspective view of the sliding apparatus which slides a longitudinal curve line to the uniaxial direction of a prior art example. It is a structure explanatory schematic perspective view of the sliding apparatus which carries out a longitudinal curve line slide to the biaxial direction of a prior art example. It is a structure outline explanatory perspective view which shows the operation state of the sliding apparatus which carries out a longitudinal curve line slide to the biaxial direction of a prior art example. It is a composition outline explanation perspective view of a present Example. It is a composition outline explanation perspective view showing the operation state of this example. It is a schematic explanatory sectional drawing of a present Example. It is a composition outline exploded explanation perspective view of a sliding mechanism of this example. It is a structure schematic back view of the 2nd rotation table of a present Example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Shaft body 2 Sliding body 3 Rolling body 4 1st rotation table 4a 1st axis | shaft 5 2nd rotation table 5a 2nd axis | shaft 6 Load path 7a Bearing 8 1st gearwheel 9 1st tooth combination
12 Second gear
13 Second tooth joint
14 Rolling element cage

Claims (8)

  A sliding device comprising a shaft body and a sliding body that slides in a longitudinally curved line relative to the shaft body, wherein a longitudinally curved load path is provided between the shaft body and the sliding body. The road is provided with a plurality of rolling elements that roll and move along the load path, the shaft body is provided on the first rotary table, and the sliding body is provided on the second rotary table. When the table rotates, the shaft body, the sliding body and the second rotary table rotate, and when the second rotary table rotates, the sliding body, the shaft body and the first rotary table do not rotate. A sliding device characterized by the above.   The sliding device according to claim 1, wherein the second rotary table is provided with a second shaft, and a bearing is provided on a bearing that receives the second shaft.   3. The sliding device according to claim 2, wherein the sliding body is connected to a second gear fitted on the second shaft, and the second meshing body meshing with the second gear is a bearing on the second rotary table. A sliding device characterized by being made.   The sliding device according to any one of claims 1 to 3, wherein the first rotary table is provided with a first shaft, and a shaft body is provided on a bearing that receives the first shaft. Sliding device.   5. The sliding device according to claim 4, wherein the shaft body is connected to a first gear fitted to the first shaft, and the first toothed body meshing with the first gear is a bearing on the first rotary table. A sliding device characterized by being made.   The sliding device according to any one of claims 1 to 5, wherein a longitudinal curve line sliding center of the sliding body and a rotation center of the first rotary table and the second rotary table are made to coincide with each other. A sliding device.   The sliding device according to any one of claims 1 to 6, wherein when the sliding body is in a horizontal state with respect to the shaft body, the rotation center of the second rotary table is aligned with the rotation center of the first rotary table. A sliding device characterized by that. The sliding device according to any one of claims 1 to 7, wherein a rolling element holder for holding the rolling elements at a predetermined interval is disposed in the load path.

Images