JP5898822B1 - Work holding device and dovetail sliding stage with work holding device - Google Patents

Abstract

Work holding that securely holds a workpiece having a shape that is difficult to grasp or clamp as a single tool or as a workpiece fixing jig that is fastened to a dovetail slide stage. An apparatus and a dovetail slide stage with a workpiece holding device are provided. A work holding device (1) penetrates a front side work holding part (2a) having a work holding surface for holding a work (10) on each of a front surface and a back surface, and a fastening bolt (4) composed of a head part (5) and a shaft part (6). A fastening bolt hole 3 for fastening to the fastening bolt hole of the dovetail slide stage 30, and the fastening hole bolt 3 has a head accommodating portion for accommodating the head 5 of the fastening bolt 4 at both ends. The head holding groove 7 communicates with the shaft through hole through which the shaft of the fastening bolt passes. [Selection] Figure 1

Description

  The present invention relates to a workpiece holding device and a dovetail sliding stage with a workpiece holding device, and in particular, a workpiece positioning by a workpiece holding device that holds a workpiece and a dovetail type sliding mechanism to which the workpiece holding device is attached. The present invention relates to a dovetail sliding stage with a workpiece holding device.

  The dovetail slide stage is mainly used in precision equipment such as electrical equipment and electronic equipment such as CCD cameras and sensors, optical equipment such as lenses and microscopes, and lighting equipment such as LEDs, and for precise positioning and position adjustment such as focusing. Used as Even after these precision devices are attached to the dovetail slide stage, the position may be finely adjusted by the dovetail slide stage.

  Since this dovetail slide stage can be precisely adjusted by a scale, it is used not only for the precision instrument described above but also for a wide range of articles. That is, an object to be subjected to position adjustment or the like is fixed on the stage surface of the dovetail slide stage, and precise positioning is performed by the dovetail slide mechanism.

  FIG. 7 shows a configuration of a general dovetail slide stage 30. In the dovetail slide stage 30, a slide unit 34 having a trapezoid dovetail 32 is movably fitted to a fixed unit 33 having a trapezoid dovetail 31. The fixing unit 33 is fixed to a base (not shown) through a base 39 having a fixing hole 35. The sliding unit 34 is connected to a workpiece fixing jig (not shown) via a bolt (not shown) inserted into the jig mounting hole 36. The sliding unit 34 moves in the direction of the arrow in the figure by rotating the handle 37. Further, a sliding fixing screw 42 for fixing the sliding unit 34 at the position and a pressurizing adjusting screw 41 for adjusting the sliding condition of the sliding unit 34 are provided.

  In this specification, an article that is a target of the work holding device is referred to as a “work”. However, this "workpiece" is not limited to the general object to be machined, but includes, for example, the above-described precision instrument parts, specimen preparations to be observed with a microscope, specimens for inspecting surface scratches, etc. Also included are objects that are not particularly machined.

  The dovetail sliding stage 30 is provided with a jig mounting hole 36 to which a precision instrument and a jig are mounted. The user may manufacture a fixing jig in order to fix the target workpiece to the sliding unit 34 serving as a stage. That is, when the dovetail slide stage 30 is used in-house, a fixing jig is manufactured in-house according to the target workpiece. The produced fixing jig is fixed to the jig mounting hole 36 via a fastener such as a bolt.

  On the other hand, when a workpiece is processed in the field of machining or the like, it is fixed by a method of gripping (gripping) the workpiece itself or a method of clamping (holding). For example, a jig called a vise or a vise is used. However, the following technique has been devised as a mechanism for holding a workpiece against a workpiece having a material or shape that is difficult to grip (hold) or pinch (clamp) the workpiece itself.

  Patent Document 1 discloses a stage device that performs processing of a workpiece on a stage, measurement of an inspection object, and the like with high accuracy. This stage apparatus has a fixed base (base) in which a pair of guide portions are provided at predetermined intervals in the X-axis direction, and a single guided portion extended in the X-axis direction (fixed direction). And an X-axis stage (stage) supported and guided by the portion and moving in the X-axis direction, and the guide portion of the fixed base is formed as a V-shaped guide groove that intersects a pair of inclined guide surfaces. Is described.

  Patent Document 2 discloses a workpiece transfer device that can easily adjust the positions of a gripping claw and a workpiece receiver. Here, the flat gripping surface provided for gripping the workpiece on the lower gripping claw is formed on a flat surface, and the upper gripping claw is formed with a V-shaped groove for gripping the workpiece, and the flat gripping surface and the V-shaped groove are formed. There is a description that the workpiece is supported by 3 points.

JP 2007-136039 A JP 2013-43228 A

  In general, users of conventional dovetail slide stages have designed and manufactured jigs themselves in order to fix a target workpiece on the surface of the dovetail slide stage. This is because the configuration and shape of articles to be attached to the dovetail slide stage are diverse, and the user must design and manufacture the product.

  However, when a user designs and manufactures a workpiece fixing jig himself / herself, it is difficult to prepare a general-purpose jig if there are variations in the configuration, specifications, shape, dimensions, etc. of the target article. There is a problem. There are various types of dovetail slide stages, but there is a problem that it is difficult to design and manufacture general-purpose jigs corresponding to them.

  On the other hand, there is a workpiece 10 that is difficult to stably hold in a fixed position on a plane, such as a cylindrical or rod-shaped workpiece. For objects that are not particularly machined, such as specimens for specimens observed with a microscope and specimens for inspecting surface flaws, a method of picking (gripping) or pinching (clamping) a workpiece itself Sometimes it is better not to fix.

  There is a method of simply placing (holding) an object other than a method of gripping (gripping) the workpiece itself or a method of pinching (holding) the workpiece itself. There must be. In addition, the material, shape, and size of the object may vary widely, and it is necessary to be able to select an appropriate holding means in accordance with that.

  The purpose of the present application is to solve such problems, and the front or back surface can be freely selected, and it is difficult to grasp or clamp as a single tool or as a workpiece fixing jig fastened to a dovetail sliding stage. It is an object to provide a workpiece holding device that securely holds a workpiece and a dovetail sliding stage with the workpiece holding device.

  In order to achieve the above object, a work holding device according to the present invention includes a work holding part having a work holding surface for holding a work on the front and back surfaces, and a fastening bolt including a head part and a shaft part, and a dovetail groove. A fastening bolt hole for fastening to the fastening bolt hole of the sliding stage, and the fastening bolt hole has a head accommodating portion for accommodating the head of the fastening bolt at both ends, and the head accommodating The portion communicates with a shaft portion through hole through which the shaft portion of the fastening bolt passes.

  With the above configuration, the work holding device according to the present invention can be used alone, but can be used by being fastened to an existing dovetail slide stage and is gripped by the dovetail slide stage. Alternatively, it is possible to reliably hold a workpiece having a shape that is difficult to sandwich. In addition, the user of the dovetail slide stage can be an optional part that does not require the user to design and manufacture the workpiece fixing jig himself, thereby saving the user's trouble and time.

  Moreover, the fastening bolt hole has a head accommodating portion for accommodating the head of the fastening bolt at both ends. With the configuration of the fastening bolt hole, the workpiece holding device according to the present invention can select and use the workpiece holding portion provided on the front surface or the back surface so as to be reversible.

  Moreover, it is preferable that the fastening bolt holes are provided in at least two locations according to the pitch of the fastening bolt holes of the dovetail sliding stage. This makes it possible to adapt the pitch of the fastening bolt holes of the existing dovetail slide stage and to freely use the work holding device as an optional part of the dovetail slide stage.

  Further, in the workpiece holding device, the groove provided on the front surface or the back surface of the workpiece holding portion includes a V-shaped groove, a hemispherical groove, an intersecting V-shaped groove, and an intersecting hemispherical groove. Is preferred. Thereby, it is possible to select an appropriate work holding unit depending on the type, shape, size, and the like of the work.

  Moreover, as for a workpiece | work holding | maintenance apparatus, it is preferable that planar adhesive materials, such as an adhesive sheet, are affixed on the workpiece | work holding part provided in the surface or a back surface, for example. Thereby, when hold | maintaining a workpiece | work, it can be used by adhere | attaching and fixing a workpiece | work to a workpiece holding part with planar adhesive materials, such as an adhesive sheet.

  In the workpiece holding device, it is preferable that the workpiece holding portion is selected such that either the front surface or the back surface of the workpiece holding surface is replaceable. Thereby, the surface suitable for holding | maintenance of a workpiece | work can be selected and used among different workpiece holding parts. In addition, when it is desired to use a different workpiece, it can be used by exchanging with another workpiece holder.

  In the work holding device, it is preferable that a guide line indicating a center point of the groove portion is provided in the work holding portion. Accordingly, the center point of the workpiece can be easily positioned at the time when the workpiece is held, and accurate centering can be performed.

  Further, the work holding device is preferably fastened to the dovetail slide stage. Thus, accurate positioning can be performed by the sliding mechanism of the dovetail sliding stage while holding the workpiece. In addition, since the work holding device is an optional part of the dovetail slide stage, the user does not need to design and manufacture a work fixing jig himself.

  As described above, according to the workpiece holding device and the dovetail sliding stage with the workpiece holding device according to the present invention, the front surface or the back surface can be freely selected, and is fastened as a single tool or to the dovetail sliding stage. As a workpiece fixing jig, it is possible to provide a workpiece holding device that reliably holds a workpiece having a shape that is difficult to grip or clamp, and a dovetail slide stage with a workpiece holding device.

It is a perspective view which shows schematic structure of 1st Embodiment of the workpiece holding apparatus which concerns on this invention in the state fastened by the dovetail groove slide stage. It is a perspective view which shows schematic structure of 2nd Embodiment of the workpiece | work holding | maintenance apparatus which concerns on this invention in the state fastened to the dovetail slide stage. It is sectional drawing which shows the relationship between the bolt hole for fastening of a workpiece | work holding device, and a fastening bolt. It is the front view and top view which show the detail of a workpiece holding part. It is the front view and top view which show the other Example of the V-shaped groove part in a workpiece holding part. It is the front view and top view which show the Example by the hemispherical groove part in a workpiece | work holding part. It is a perspective view which shows the structure of a general dovetail slide stage.

(Configuration of work holding device)
Below, it demonstrates in detail about 1st Embodiment of the workpiece holding apparatus 1 which concerns on this invention using drawing. FIG. 1 is a perspective view showing a schematic configuration of the first embodiment of the workpiece holding device 1 in a state where the workpiece holding device 1 is fastened to a dovetail slide stage. FIG. 2 is a perspective view showing a schematic configuration of the second embodiment of the workpiece holding device 1 in a state where the workpiece holding device 1 is fastened to the dovetail sliding stage 30. The workpiece holding device 1 of the second embodiment in FIG. 2 is a case where the workpiece holding device 1 of the first embodiment in FIG. 1 is turned upside down. That is, the work holding device 1 is configured to be reversibly used on both the front and back surfaces with different holding means for the work 10. Further, FIG. 3 shows a fastening means for the dovetail sliding stage 30 and the work holding device 1 by a sectional view showing the relationship between the fastening bolt hole 3 and the fastening bolt 4 of the work holding device 1. In this specification, “holding” a workpiece is not a method of processing by gripping (gripping) or pinching (holding) the workpiece, but by placing (holding) the workpiece against the workpiece. Processing, observation, or inspection. In addition, regarding drawings in the present specification, descriptions of fasteners such as the fastening bolts 4 are omitted in order to avoid complexity of the drawings.

  As shown in FIGS. 1 and 2, the workpiece holding device 1 includes workpiece holding portions 2 a and 2 b and a fastening bolt hole 3. The work holding unit 2 has a work holding surface for holding the work 10 on each of the front surface 13 and the back surface 14. 1 has a V-shaped groove 15 and, for example, a workpiece 10 that is difficult to stably hold in a fixed position on a plane, such as a cylindrical workpiece 10 such as a drill. Suitable for holding. The back-side work holding part 2b of FIG. 2 has a flat plate groove part 19 provided with a sheet-like adhesive material 11 such as an adhesive tape, to which the work 10 is bonded, for example, like a work 10 such as a ring or a sphere. A workpiece that cannot be stably held at a fixed position on a plane can be held.

  Further, as shown in FIG. 3, the fastening bolt hole 3 passes through the fastening bolt 4 including the head portion 5 and the shaft portion 6, and passes through the jig mounting hole 36 of the dovetail sliding stage 30 shown in FIG. Fasten and fasten. Therefore, the fastening bolt hole 3 includes head receiving portions 9 a and 9 b that hold the head 5, a shaft through hole 8 through which the shaft 6 of the fastening bolt 4 passes, and a head holding that holds the head 5. It is composed of a groove 7. The head receiving portions 9 a and 9 b are communicated with the head holding groove 7 through a shaft portion through hole 8 through which the shaft portion 6 of the fastening bolt 4 passes. With this configuration, the front surface 13 and the back surface 14 of the work holding device 1 can be used reversibly. In other words, the fastening bolt hole 3 can be fastened to the jig mounting hole 36 of the dovetail sliding stage 30 even if the fastening bolt 4 is inserted from either the front surface 13 or the back surface 14 side.

  With reference to FIG. 4, the front surface side work holding part 2a which is the first embodiment and the back surface side work holding part 2b which is the second embodiment will be described in detail below. FIG. 4A shows a front view of the work holding device 1. FIG. 4B is a plan view of FIG. 4A viewed from the direction AA, and shows the surface-side work holding portion 2a. Moreover, FIG.4 (c) is the top view which looked at Fig.4 (a) from the BB direction, and shows the back surface side workpiece | work holding part 2b. 4A shows a rod-like work 10a as an example of the work 10 with respect to the front surface side work holding part 2a, and FIG. 4B shows the work 10 with respect to the back side work holding part 2b. A rectangular parallelepiped work 10b is shown as an example.

(Details of the first embodiment)
As shown by a broken line in FIG. 4B, the surface-side workpiece holding portion 2 a is provided with a V-shaped groove portion 15 in one direction, and an exemplary rod-shaped workpiece 10 a is disposed along the V-shaped groove portion 15. The Further, in the direction intersecting with the V-shaped groove 15, fastening bolt holes 3 are provided at two locations, and the fastening bolts 4 are inserted. Further, when the fastening bolt hole 3 is viewed in plan, a U-shaped head holding groove 7 is visible. Moreover, in this embodiment, the reference | standard line 12 is attached | subjected to four places of the surface 13, becomes a standard of a center position when installing the rod-shaped workpiece | work 10a, and can center easily.

(Details of Second Embodiment)
As shown by a broken line in FIG. 4C, the back surface side work holding portion 2 b is provided with a flat plate groove portion 19, and an illustrative rectangular parallelepiped workpiece 10 b is arranged along the flat plate groove portion 19. A planar adhesive material 11 is provided in the flat groove portion 19. The planar pressure-sensitive adhesive material 11 is a material in which two articles such as a pressure-sensitive adhesive tape are bonded to each other. Further, fastening bolt holes 3 are provided at two locations in the direction intersecting with the flat groove portion 19, and the fastening bolts 4 are inserted. Further, when the fastening bolt hole 3 is viewed in plan, a U-shaped head holding groove 7 is visible. Moreover, in this embodiment, the reference | standard line | wire 12 is attached | subjected to four places of the surface 13, becomes a standard of a center position when installing the workpiece | work 10b, and can center easily.

(Another embodiment of the work holding unit)
As another embodiment of the work holding units 2a and 2b, FIG. 5 shows a work holding device 40, and FIG. 6 shows a work holding device 50. The workpiece holding portions 2a and 2b provided on the front surface 13 or the back surface 14 of the workpiece holding device 40 and the workpiece holding device 50 include a V-shaped groove portion 15, a hemispherical groove portion 16, an intersecting V-shaped groove portion 17, and an intersecting hemispherical groove portion. 18 is included. In the intersecting V-shaped groove portion 17 and the intersecting hemispherical groove portion 18, the work 10 is installed in two directions, and the work holding device 1 becomes easier to use.

FIG. 5 shows another embodiment of the V-shaped groove 15 in the surface-side work holding part 2a. Fig.5 (a) is a front view of the surface side workpiece holding part 2a, FIG.5 (b) is a top view of the surface side workpiece holding part 2a. The surface side work holding part 2a in this embodiment is provided with an intersecting V-shaped groove part 17. That is, as shown in FIG. 5B, an intersecting V-shaped groove portion 17 is formed by a V-shaped groove portion 15a in one direction and a V-shaped groove portion 15b provided in a direction intersecting with the V-shaped groove portion 15a. Is done. Thereby, installation of the rod-shaped workpiece 10a in two intersecting directions becomes possible. However, the space for disposing the fastening bolt hole 43 is eliminated by the intersecting V-shaped groove portion 17. Therefore, as shown in FIG. 5B, fastening bolt holes 43 can be provided at the four corners of the surface-side work holding portion 2a. In this embodiment, the number and arrangement of the fastening bolts 4 may be arranged at the four corners, may be arranged only at the two opposite corners, and may not be arranged at the other two corners. Further, guide lines 42 are provided at four locations of the intersecting V-shaped groove portion 17 in FIG. 5B, so that the center point of the workpiece 10 can be easily positioned and accurate centering can be performed.

  In FIG. 6, the Example by the hemispherical groove part 16 in the surface side workpiece | work holding | maintenance part 2a is shown. FIG. 6A is a front view of the surface-side workpiece holding portion 2a, and FIG. 6B is a plan view of the surface-side workpiece holding portion 2a. In this embodiment, the surface-side workpiece holding portion 2a is provided with a crossed hemispherical groove portion 18. That is, the intersecting hemispherical groove portion 18 is formed by the hemispherical groove portion 16a in one direction and the hemispherical groove portion 16b in a direction intersecting therewith. Thereby, installation of the rod-shaped workpiece 10a in two intersecting directions becomes possible. However, the space for disposing the fastening bolt hole 53 is eliminated by the intersecting hemispherical groove 18. Therefore, as shown in FIG. 6B, fastening bolt holes 53 can be provided at the four corners of the surface-side work holding portion 2a. In this embodiment, the number and arrangement of the fastening bolts 4 may be arranged at the four corners, may be arranged only at the two opposite corners, and may not be arranged at the other two corners. Furthermore, guide lines 52 are provided at four locations of the intersecting hemispherical grooves 18 in FIG. 6B, so that the center point of the workpiece 10 can be easily positioned and accurate centering can be performed.

(Fastening of work holding device and dovetail slide stage)
The workpiece holding devices 1, 40, 50 may be used alone or may be used by being fastened to the dovetail sliding stage 30. When used by being fastened to the dovetail slide stage 30, accurate positioning can be performed by the slide mechanism of the dovetail slide stage 30 while the workpiece 10 is held. In addition, since the work holding devices 1, 40, and 50 are optional parts of the dovetail sliding stage 30, it is not necessary for the user to design and manufacture a work fixing jig.

  When the workpiece holding devices 1, 40, 50 are used by being fastened to the dovetail sliding stage 30, the fastening bolt 4 that is suitable for the jig mounting hole 36 provided in the dovetail sliding stage 30 is used. Further, the pitch of the fastening bolt holes 3, 43, 53 of the work holding devices 1, 40, 50 may be matched with the pitch of the jig mounting holes 36.

  The configuration, shape, size, and arrangement relationship described in the above embodiments are merely schematically shown to the extent that the present invention can be understood and implemented. Therefore, the present invention is not limited to the described embodiments, and can be variously modified without departing from the scope of the technical idea shown in the claims.

1, 40, 50 Work holding device, 2 Work holding part, 2a Front side work holding part, 2b Back side work holding part, 3, 43, 53 Fastening bolt hole, 4 Fastening bolt, 5 head, 6 shaft part, 7, 47, 57 Head holding groove, 8 Shaft through hole, 9a, 9b Head receiving part, 10 Work, 10a Bar-shaped work, 10b Rectangular work, 11 Planar adhesive, 12, 42, 52 Reference line, 13 Front, 14 Back, 15, 15a, 15b V-shaped groove, 16, 16a, 16b Hemispherical groove, 17 Crossed V-shaped groove, 18 Crossed hemispherical groove, 19 Flat groove, 30 Dovetail slide stage 31 Dovetail , 32 ant, 33 fixing unit, 34 sliding unit, 35 fixing hole, 36 jig mounting hole, 37 handle, 38 scale, 39 base, 41 pressure adjusting screw, 42 sliding fixing screw.

Claims (7)

A work holding part having a work holding surface for holding the work on the front and back surfaces, and
A fastening bolt hole for passing through a fastening bolt composed of a head portion and a shaft portion and fastening it to a fastening bolt hole of a dovetail sliding stage;
Each of the fastening bolt holes has a head accommodating portion that accommodates the head of the fastening bolt at both ends, and the head accommodating portion communicates with a shaft portion through-hole through which a shaft portion of the fastening bolt passes. A workpiece holding device.   2. The work holding apparatus according to claim 1, wherein the fastening bolt holes are provided in at least two locations in accordance with a pitch of the fastening bolt holes of the dovetail sliding stage.   The work holding device according to claim 1 or 2, wherein the groove provided on the front surface or the back surface of the work holding part includes a V-shaped groove, a hemispherical groove, an intersecting V-shaped groove, And a workpiece holding device characterized by including a semispherical groove portion that intersects.   3. The work holding apparatus according to claim 1, wherein a planar adhesive material is attached to the work holding portion provided on the front surface or the back surface. 4.   5. The workpiece holding device according to claim 1, wherein the workpiece holding unit is selected such that the workpiece holding surface of either the front surface or the back surface is replaceable. 6. Work holding device.   6. The work holding apparatus according to claim 1, wherein a guide line indicating a center point of the groove is provided in the work holding part. A dovetail sliding stage with a work holding device to which the work holding device according to claim 1 is fastened.

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