JP6601939B2 - Measuring device - Google Patents

Description

  The present invention relates to a length measuring device that measures the length of a workpiece processed by a processing device.

  Conventionally, a length measuring device for measuring the length of a workpiece has been provided. For example, a length measuring device disclosed in Patent Document 1 below is known. In Patent Document 1, a slide body having a measuring instrument that is slidably mounted on a slide rail is provided with a contact portion that contacts the end surface of the workpiece, and the contact portion is in contact with the end surface of the workpiece. The structure which measures the length of a workpiece | work from the measured value of the measuring device in is disclosed.

  On the other hand, a processing apparatus that performs various processes such as cutting, drilling, and drawing on a workpiece that is a workpiece is widely known. In such a processing apparatus, an accurate cutting position with respect to the work, In order to perform processing at a processing position such as a drilling position or a drawing position, it is necessary to accurately measure the length of a workpiece from a desired location to the processing position.

  For this reason, in the length measuring device disclosed in Patent Document 1, the measuring device (sliding body) is slid along the slide rail, and the clamp lever is operated to place the measuring device at a position corresponding to the desired length. It is configured so that it can be fixed.

JP 2012-002706 A

  However, conventionally, when the measuring instrument slides slightly when fixing the measuring instrument with respect to the slide rail, if it has shifted from the desired fixing position, it is necessary to repeat the fixing operation from the beginning, It was difficult to accurately fix the desired position. If the slide body cannot be accurately fixed at a desired position, the length of the workpiece cannot be measured with high accuracy.

  This invention is made | formed in view of such a subject, can fix a measuring device to a desired position correctly with respect to a slide rail, and can measure the length of a workpiece | work with high precision. An object is to provide a length measuring device.

In order to solve the above-mentioned problem, a length measuring device according to the present invention is used in combination with a workpiece processing device, and in the length measuring device for measuring the length of a workpiece processed by the workpiece processing device, the workpiece processing device. A slide rail that is integrally fixed to the slide rail, a slide portion that is slidably installed on the slide rail, and has a linear guide that is slidably attached to the slide rail, and the slide main body is the slide A length measuring device that measures the distance moved along the rail, a temporary fixing body, a fine adjustment mechanism that connects the slide main body and the temporary fixing body so as to be relatively movable in the sliding direction of the slide main body, A first clamp for fixing the slide body to the slide rail, and the temporary fixing body are connected to the slide lever. A temporary fixing clamp for fixing against Le, was closed, the linear guide, characterized in that it comprises a slide portion which is installed only on the slide body.

  According to the length measuring device according to the present invention, the measuring instrument can be accurately fixed to a desired position with respect to the slide rail, and the length of a predetermined portion of the workpiece can be accurately measured.

FIG. 1 is a perspective view of a length measuring device according to an embodiment of the present invention. FIG. 2 is an enlarged perspective view of a main part of the length measuring device according to the embodiment of the present invention. FIG. 3 is an enlarged perspective view of the main part of the length measuring apparatus according to the embodiment of the present invention. FIG. 4 is an enlarged view of a main part of the length measuring apparatus according to the embodiment of the present invention. FIG. 5 is an enlarged view of a main part of the length measuring device according to the embodiment of the present invention. FIG. 6 is an enlarged view of a main part of the length measuring device according to the embodiment of the present invention. FIG. 7 is an enlarged view of a main part of the length measuring device according to the embodiment of the present invention. FIG. 8 is a perspective view showing a usage state of the length measuring device according to the embodiment of the present invention.

  Hereinafter, a length measuring device according to an embodiment of the present invention will be described with reference to the drawings. In the present embodiment, a length measuring device that measures the length of a workpiece cut to a predetermined length by a cutting device will be described. FIG. 1 is a perspective view of a length measuring device according to this embodiment.

  2 and 3 are enlarged perspective views of main parts (a part of the base part and the slide part) of the length measuring device according to the present embodiment. In FIG. 3, some members are shown transparent. . 4 to 7 are enlarged views of the main part of the length measuring device. 4A is a side view of the main part (a part of the base part and the slide part) of the length measuring device, and FIG. 4B is a horizontal sectional view taken along line AA in FIG. 4A. It is.

  5A is a plan view of the main part (a part of the base part and the slide part) of the length measuring device, and FIG. 5B is a vertical sectional view taken along line BB in FIG. 5A. It is. 6A is a plan view of the main part (a part of the base part and the slide part) of the length measuring device, and FIG. 6B is a vertical sectional view taken along the line CC in FIG. 6A. It is. FIG. 7A is a plan view of the main part (a part of the base part and the slide part) of the length measuring device, and FIG. 7B is a vertical sectional view taken along the line DD in FIG. 7A. It is. 4 to 7 schematically show a part of the configuration.

  The length measuring device 1 includes a base portion 10 that is fixed to a cutting device that will be described later, and a slide portion 20 that is slidably installed with respect to the base portion 10. The base 10 includes a long plate-shaped base 11, a slide rail 13 installed on the base 11, and a slide stopper 15 installed at one end (substantially right end in FIG. 1) of the slide rail 13. With.

  The slide rail 13 is formed with a pair of slide grooves 14 extending in the slide direction on both side surfaces in the slide direction. The slide stopper 15 prevents the slide portion 20 from being detached from the end of the slide rail 13.

  The slide unit 20 includes a slide main body 30, a temporary fixing body 40, a fine adjustment mechanism 50 that finely adjusts the relative position of the slide main body 30 and the temporary fixing body 40 in the sliding direction, an arm unit 60, and a digital length measuring device. 70, and is slidably installed on the slide rail 13 via the slide body 30.

  The slide body 30 includes a housing 31, a first clamp 35 for fixing the housing 31 to the slide rail 13, and a linear guide 39 fixed to the lower surface of the housing 31. The casing 31 is formed with an enclosed space 341 for accommodating the temporarily fixed body 40. FIG. 4B is a horizontal sectional view of a portion of the enclosed space 341. A male screw insertion hole 32 through which a feed screw 51 of a fine adjustment mechanism 50 to be described later passes is formed in a portion of the housing 31 facing the enclosed space 341. The inner diameter of the male screw insertion hole 32 is larger than the shaft outer diameter of the feed screw 51 described later.

  Further, the housing 31 is formed with a flange groove 321 for fitting a flange 53 formed on the feed screw 51 at an outer inlet portion on the opposite side to the enclosed space 341 of the male screw insertion hole 32. The housing 31 includes a flange fixing plate 33 for pressing and fixing the flange 53 of the feed screw 51 from the outside in a state where the flange 53 is fitted in the flange groove 321. The housing 31 includes an arm holding part 342 for holding an arm part 60 described later.

The first clamp 35 includes a clamp lever 36, a sandwiching body 37, and a clamp shaft 38, and is fixed to the housing 31. FIG. 5B is a vertical cross-sectional view perpendicular to the sliding direction of the portion where the first clamp 35 is installed. The clamp shaft 38 is disposed in a direction orthogonal to the slide direction. The clamp lever 36 is fixedly installed at one end of the clamp shaft 38. By rotating the clamp lever 36 around the clamp shaft 38, the clamp shaft 38 can be rotated around the shaft.

  The sandwiching body 37 is composed of a pair of blocks that are pivotally supported by the clamp shaft 38 and arranged so as to sandwich the slide rail 13. The clamp shaft 38 is provided with a thread groove, and the interval between the pair of blocks constituting the sandwiching body 37 can be adjusted by rotating the clamp shaft 38.

  Therefore, the first clamp 35 operates the clamp lever 36 to fix the slide body 30 to the slide rail 13 and to release the slide body 30 to be slidable with respect to the slide rail 13. The state can be switched. As shown in FIG. 5B, in the fixed state, the sandwiching body 37 sandwiches and holds the slide rail 13, and in the fixed release state, the sandwiching body 37 is retracted away from the slide rail 13.

  The linear guide 39 is fixed to the lower surface of the housing 31 and is attached to the slide rail 13 so as to be smoothly slidable. FIG. 6B is a vertical sectional view perpendicular to the sliding direction of the portion where the linear guide 39 is installed.

  The temporary fixing body 40 includes a temporary fixing block 41 disposed in the enclosed space 341 of the slide main body 30 and a temporary fixing clamp 45 for fixing the temporary fixing block 41 to the slide rail. The temporary fixing block 41 has a shape and a size that can move relative to the slide body 30 in the sliding direction in the enclosed space 341. The temporary fixing block 41 is formed with a female screw hole 42 extending in the sliding direction into which a feed screw 51 of a fine adjustment mechanism 50 described later is screwed.

  The temporary fixing clamp 45 includes a clamp lever 46, a sandwiching body 47, and a clamp shaft 48, and is fixed and installed on the lower surface of the temporary fixing block 41. FIG. 7B is a vertical sectional view perpendicular to the sliding direction of the portion where the temporary fixing clamp 45 is installed. The clamp shaft 48 is arranged in a direction orthogonal to the sliding direction.

  The clamp lever 46 is fixedly installed at one end of the clamp shaft 48, and can be switched between a state where the clamp lever 46 is laid down substantially parallel to the clamp shaft 48 and a state where the clamp lever 46 is raised substantially vertically. The clamp shaft 48 can be reciprocated in the axial direction by tilting or raising the clamp lever 46.

  The sandwiching body 47 is composed of a pair of blocks that are pivotally supported by the clamp shaft 48 and arranged so as to sandwich the slide rail 13. By sliding the clamp shaft 48 in the axial direction, the distance between the pair of blocks constituting the holding body 47 can be adjusted.

  Therefore, the temporary fixing clamp 45 operates the clamp lever 46 to release the fixed state in which the temporary fixing body 40 is fixed to the slide rail 13 and the temporary fixing body 40 to be slidable with respect to the slide rail 13. The fixed release state can be switched. As shown in FIG. 7B, in the fixed state, the sandwiching body 47 sandwiches and holds the slide rail 13, and in the fixed release state, the sandwiching body 47 is retracted away from the slide rail 13. As the temporary fixing clamp 45, one having a weaker clamping force (fixing force) than the first fixing clamp 35 is used.

  The fine adjustment mechanism 50 is a screw feed mechanism that connects the slide body 30 (housing 31) and the temporary fixing body 40 (temporary fixing block 41) so as to be relatively movable, and includes a feed screw 51 that is a male screw. Yes. The feed screw 51 includes a handle 52 installed on the head, a flange 53 formed near the head, and a male screw portion 54 formed on the distal end side (see FIG. 4B, etc.). .

  The feed screw 51 is pressed by the flange fixing plate 33 so that the flange 53 does not come out of the flange groove 321 in a state where the flange 53 is fitted in the flange groove 321 formed at the inlet of the screw insertion hole 32 of the housing 31. It is attached. Therefore, the feed screw 51 is restricted from moving in the sliding direction with respect to the housing 31, and the relative position of the feeding screw 51 and the housing 31 in the sliding direction is fixed.

  The male screw portion 54 of the feed screw 51 is screwed into the female screw hole 42, and when the feed screw 51 rotates about the axis, the feed screw 51 and the female screw hole 42 are screwed together to temporarily fix the feed screw 51. The block 41 is relatively moved by screw feed in the sliding direction.

  As described above, the feed screw 51 and the casing 31 are relatively fixed in the sliding direction. Therefore, when the feed screw 51 rotates around the axis, the slide main body 30 and the temporarily fixed body 40 move relatively in the slide direction.

  In the present embodiment, the feed screw 51 and the housing 31 are configured to move 0.8 mm in the slide direction when the feed screw 51 rotates once. By rotating the feed screw 51, the slide body 30 and the temporary body 31 are temporarily moved. The relative position with respect to the fixed body 40 can be finely adjusted.

  Here, as described above, the temporary fixing body 40 is disposed in the enclosed space 341 formed in the vicinity of the center of the housing 31 of the slide body 30 (see FIG. 2, FIG. 4B, etc.). For this reason, when the relative position of the temporarily fixed body 40 and the slide main body 30 in the slide direction is finely adjusted by the fine adjustment mechanism 50, the relative movement range of the temporarily fixed body 40 is limited within the enclosed space 341. . Thereby, it is possible to prevent the feed screw 51 from being detached from the female screw hole 42 due to excessive rotation of the feed screw 51.

  Of course, the installation location of the temporarily fixed body 40 can be appropriately changed as long as it can be slidably connected to the slide main body 30 by the fine adjustment mechanism 50. May be.

  Further, as the fine adjustment mechanism 50, a structure other than the screw feed mechanism may be adopted, and any structure that can finely adjust the relative positional relationship between the slide main body 30 and the temporarily fixed body 40 along the slide direction can be used. For example, a rack and pinion type or a push screw type structure can be adopted.

  The arm unit 60 includes an arm support shaft 62 held by the arm holding unit 342 of the slide body 30, a spring 63, and a work contact arm 64. The tip portion of the workpiece contact arm 64 becomes a workpiece contact portion 65 that contacts the workpiece when measuring the length.

  The work contact arm 64 is pivotally supported by an arm support shaft 62 extending in the sliding direction so as to be slidable in the sliding direction. The spring 63 is installed coaxially with the arm support shaft 62 and urges the workpiece contact arm 64 toward the distal end where the workpiece contact portion 65 is located.

  The digital length measuring device 70 includes a distance measuring unit 71 (not shown) that measures the slide distance of the slide body 30 with respect to the slide rail 13 and a display unit 72 that displays the measurement values measured by the distance measuring unit 71. The measurement value can be reset to 0 by the operator operating the digital length measuring device 70.

  Here, the length measuring device 1 is for measuring the distance from one end of the work to a predetermined part of the work to be measured, and the distance measuring unit 71 uses the place where the slide distance is reset as the origin. The distance from the origin is output as a measured value.

  The distance measuring unit 71 measures the direction away from the processing position that is the origin (substantially right direction in FIG. 1) as the positive direction, and the slide unit 20 is not the total slide distance of the slide unit 20 from the origin but the current position. It is configured to display the distance from the origin of the place to be.

  The configuration of the length measuring device 1 has been described above. Next, a procedure for measuring the length of the workpiece by the length measuring device 1 will be described. First, a procedure for positioning and fixing the slide body 30 at a desired position of the slide rail while finely adjusting the slide position by the fine adjustment mechanism 50 will be described.

  First, as a temporary fixing step, the slide portion 20 is temporarily fixed near a desired position of the slide rail 13. Specifically, while confirming the measurement value of the display unit 72 of the digital length measuring device 70, the slide body 30 is manually slid to the position where the slide rail 13 is approximately the desired length via the linear guide 39. Let

  When the slide main body 30 is moved to the vicinity of the desired position, the temporary fixing clamp 45 of the temporary fixing body 40 is closed and the temporary fixing body 40 is firmly fixed to the slide rail 13. At this time, since the temporarily fixed body 40 is connected to the slide body 30 via the fine adjustment mechanism 50, the slide body 30 is also temporarily temporarily fixed to the slide rail 13.

  Next, as a fine adjustment step, the slide position of the slide body 30 with respect to the slide rail 13 is finely adjusted by the fine adjustment mechanism 50 and accurately positioned at a desired slide position. Specifically, the slide body 30 is moved in the sliding direction with respect to the temporarily fixed body 40 fixed to the slide rail 13 by the screw feed mechanism by turning the handle 52 while confirming the measurement value of the display unit 72 again. Move to a small distance.

  Then, fine adjustment by screw feeding is finished at the place where the measured value of the display unit 72 matches the desired length, the first clamp 35 is closed, and the slide body 30 is fixed to the slide rail 13. Thereby, the slide main body 30 can be accurately and firmly fixed to a desired position.

  As described above, according to the present embodiment including the temporary fixing step and the fine adjustment step, in the temporary fixing step, the slide unit 20 is manually moved quickly, and then the slide position is finely adjusted in the fine adjustment step. Thus, accurate positioning can be performed in a short time as a whole.

  Then, the procedure at the time of measuring the length of a workpiece | work with the length measuring apparatus 1 is demonstrated. FIG. 8 is a perspective view showing a usage state of the length measuring apparatus according to the present embodiment. In this embodiment, the length measuring device 1 is used in combination with the cutting device 5, and by measuring the length with the length measuring device 1, the cutting device 5 allows the workpiece to have a desired length at the cutting position (processing position). cut.

  Specifically, before the workpiece is set, the workpiece contact portion 65 of the arm portion 60 is positioned at the cutting position, which is the machining position, and the measured value of the digital length measuring device 70 is reset to zero. At this time, by positioning the slide position of the slide main body 30 by the method described above, the workpiece contact portion 65 can be reset in a state where it is accurately positioned at the cutting position.

  Subsequently, the slide unit 20 is slid in a direction away from the machining position (substantially rightward in FIG. 1), and the workpiece contact arm 64 is retracted from the workpiece installation location. At this time, when the slide unit 20 is slid, the display unit 72 of the digital length measuring device 70 moves on the slide body 20 from the position where the measurement value is reset, that is, the distance from the origin of the workpiece contact unit 65. Is displayed.

  Then, the operator fixes the slide unit 20 at a position where the measured value of the display unit 72 becomes a desired length value. At this time, by positioning the slide position of the slide main body 30 by the above-described method, the slide portion 20 can be fixed at a position where the slide unit 20 is accurately slid by a desired length.

  Then, the distance from the origin to the workpiece contact portion 65 becomes a desired length. And if a workpiece | work is installed in a cutting position so that one end may contact | connect the workpiece | work contact part 65, a workpiece | work can be cut | disconnected by desired length.

  As described above, the length measuring device 1 according to the present embodiment has been described in detail. However, according to the present embodiment, when the slide portion 20 is fixed, the temporary fixing body 40 is first fixed at an approximate position first, and thereafter By finely adjusting and fixing the slide position of the slide body 30 by the fine adjustment mechanism 50, the slide body 30 can be accurately fixed at a desired position.

  As described above, the fine adjustment mechanism 50 is configured such that when the feed screw 51 rotates once, the slide main body 30 and the temporary fixing body 40 are moved by 0.8 mm in the slide direction, and the slide main body 30 is in units of 0.1 mm. It is possible to finely adjust the slide position so that it can be accurately fixed at a desired position. If the slide body 30 can be accurately positioned at a desired position, the length of the workpiece to be processed can be accurately measured with high accuracy.

  In the present embodiment, the temporary fixing body 40 is temporarily fixed, and when the slide main body 30 is permanently fixed after fine adjustment of the slide position, the temporary fixing body 40 is not fixed to the temporary fixing body 40 but directly to the slide rail 13. Since they are fixed to each other, even if the temporary fixing clamp 45 is loosened after the main fixing, the sliding position of the slide body 30 remains firmly fixed by the first clamp 35.

  The present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the spirit of the present invention. For example, the shape and size of each member constituting the length measuring device according to the present embodiment can be changed as appropriate.

  In the present embodiment, the cutting device has been described as an example of a processing device used in combination with a length measuring device. However, a drilling device that drills a hole in a predetermined location of the workpiece or a predetermined location of the workpiece. Various other processing devices such as a drawing device for drawing a line can be used in combination.

  Moreover, in the said embodiment, although the linear guide which slides smoothly with respect to a slide rail is installed only in a slide main body, and the linear guide is not installed in a temporary fixed body, a linear guide is also installed in a temporary fixed body You may do it.

DESCRIPTION OF SYMBOLS 1 Length measuring device 10 Base part 11 Base stand 13 Slide rail 14 Slide groove 15 Slide stopper 20 Slide part 30 Slide main body 31 Housing 32 Male screw insertion hole 321 Flange groove 33 Flange fixing plate 341 Enclosed space 342 Arm holding part 35 First clamp 36 Clamp lever 37 Clamping body 38 Clamp shaft 39 Linear guide 40 Temporary fixing body 41 Temporary fixing block 42 Female screw hole 45 Temporary fixing clamp 46 Clamp lever 47 Clamping body 48 Clamp shaft 50 Fine adjustment mechanism 51 Feed screw 52 Handle 53 Flange 54 Screw part 60 Arm part 64 Work contact arm 65 Work contact part 70 Digital length measuring device 71 Distance measuring part 72 Display part

Claims (3)

In a length measuring device that is used in combination with a workpiece processing device and measures the length of a workpiece processed by the workpiece processing device,
A slide rail fixed integrally to the workpiece processing apparatus;
A slide part slidably installed on the slide rail,
A slide body having a linear guide slidably attached to the slide rail;
A length measuring device for measuring the distance the slide body has moved along the slide rail;
A temporarily fixed body,
A fine adjustment mechanism for connecting the slide body and the temporarily fixed body so as to be relatively movable in the sliding direction of the slide body;
A first clamp for fixing the slide body to the slide rail;
Have a, a temporary fixing clamp for fixing the temporarily fixed member with respect to the slide rail, said slide portion linear guide is provided only on the slide body,
A length measuring apparatus comprising: The fine adjustment mechanism, Ri screw feed mechanism der having a feed screw, a flange formed on the feed screw, and
The slide body includes a flange groove into which the flange is fitted, and a flange fixing plate that presses the flange in a state in which the flange is fitted into the flange groove,
The length measuring device according to claim 1 , wherein a relative position of the slide body and the feed screw in the sliding direction is fixed .   The temporary fixing body is installed in a space surrounded by the slide body, and a range of movement relative to the slide body in the slide direction is limited by the slide body. Or the length measuring apparatus of 2 description.

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