CN219869468U - Auxiliary detection tool for special-shaped groove on flange end face - Google Patents

Abstract

The utility model discloses an auxiliary detection tool for a flange end face special-shaped groove, which comprises a base, wherein a vertically arranged driving mechanism is arranged on the base, a vertically reciprocating support is arranged on the driving mechanism, a rotating shaft is arranged on the support, a traction device is arranged on the support and is connected with the upper end of the rotating shaft, the rotating shaft vertically reciprocates under the driving of the driving mechanism and simultaneously rotates around a shaft in a rotating angle limited by the traction device in a reciprocating manner, a detection device is arranged at the lower end of the rotating shaft, the detection device at least comprises a profiling detection plate, and a clamping device is arranged on the base corresponding to the lower part of the profiling detection plate; the driving mechanism and the traction device realize that the rotating shaft moves up and down and simultaneously rotates reciprocally in a certain angle range, so that the profiling detection plate can be ensured to rotate to a position which coincides with the section of the special-shaped groove in a vertical state, and the outer contour of the profiling detection plate is matched with the inner contour of the special-shaped groove.

Description

Auxiliary detection tool for special-shaped groove on flange end face

Technical Field

The utility model relates to the technical field of detection measuring tools, in particular to an auxiliary detection tool for a flange end surface special-shaped groove.

Background

As shown in fig. 4, the flange end face is provided with a special-shaped groove for installing a sealing ring, the upper end opening of the special-shaped groove is small, the lower opening is large, in order to ensure the tightness after flange installation, the special-shaped groove is detected and dimensioned by a profiling plate, one profiling detection plate is vertically plugged into the special-shaped groove, the profiling detection plate rotates to a position which coincides with the section of the special-shaped groove, the outer contour of the profiling detection plate is matched with the inner contour of the special-shaped groove, then the profiling detection plate is plugged into a gap between the outer contour of the profiling detection plate and the inner contour of the special-shaped groove by a plug gauge, the plug gauge is not passed, namely, the product is qualified, the detection mode is generally manually operated by a detector, and as the detector cannot ensure whether the outer contour of the profiling detection plate is matched with the inner contour of the special-shaped groove in a vertical state, the possibility that the profiling detection plate deflects in the detection process, and the plug gauge can pass through the gap, so that a product which is qualified by itself can be mistakenly detected as a defective product, and meanwhile, the defective product can be provided to a qualified product by a detector because of the inclination of the plate can not pass through the gap.

Disclosure of Invention

The utility model aims to solve the technical problems, and provides an auxiliary detection tool for a flange end surface special-shaped groove, which can ensure that the detection plate is in a vertical state and is in a position overlapped with the section of the special-shaped groove, so that the outer contour of the detection plate is matched with the inner contour of the special-shaped groove.

In order to achieve the above purpose, the present utility model adopts the following technical scheme: the utility model provides a flange terminal surface dysmorphism groove auxiliary detection frock, includes the base, be equipped with the actuating mechanism of vertical setting on the base, be equipped with vertical reciprocating motion's support on the actuating mechanism, be equipped with the pivot on the support, be equipped with draw gear and pivot upper end connection on the support, the pivot is in the reciprocating rotation of rotation angle that draw gear prescribes a limit to around the axle when vertical reciprocating motion under actuating mechanism's drive, the pivot lower extreme is equipped with detection device, detection device includes at least one profile modeling pick-up plate, profile modeling pick-up plate below corresponds be equipped with clamping device on the base.

In order to provide a stable in structure has the actuating mechanism of good precision, further preferred technical scheme still, actuating mechanism includes a pair of guide arm of vertical setting, the guide arm upper end is equipped with the top cap, a pair of be equipped with the lead screw of vertical placement between the guide arm, lead screw one end pass through the bearing with the base rotates to be connected, the other end pass through the bearing with the top cap rotates to be connected, still be equipped with servo motor on the top cap, servo motor's output shaft run through the top cap with the lead screw is connected.

In order to realize that the rotating shaft moves up and down and moves back and forth in a certain angle range, the further preferred technical scheme is that the traction device comprises a section of annular support, a section of annular support is coaxially arranged on the support corresponding to the outer side of the upper end of the rotating shaft, a deflector rod extending outwards along the radial direction of the rotating shaft is arranged at the upper end of the rotating shaft, one side, which is close to the rotating shaft, of the deflector rod penetrates through the annular support to the inner annular of the annular support through the annular support, an annular groove is further formed in the annular support, one end, which is far away from the screw rod, of the annular support is provided with a plug, the plug is in threaded connection with the annular support, one end, which is located in the annular ring, is provided with a first spring, one end of the first spring is connected with the plug, the other end of the first spring stretches out and draws back along the inner annular ring of the annular support and is connected with one end of a steel wire rope, the other end of the steel wire rope extends outwards along the inner annular ring of the annular support to the other end of the annular support to a position, which is close to the screw rod, one end of the guide ring is further arranged on the support corresponding to the front of the screw rod, one end, which is located in the guide ring, and the guide ring is located in the upper end, which is connected with the steel wire rope.

In order to make the annular support stable in structure and strong in visibility, be convenient for maintenance, further preferred technical scheme still, the cross-section upper portion at annular support both ends is the ring form, and the lower part is rectangular, the upper portion of the cross-section of annular support middle section is the semicircle ring form, and the lower part is rectangular, the annular opening orientation of semicircle is kept away from the direction of pivot.

In order to prevent the wire rope from being pulled and deformed or the deflector rod and the annular support from being pulled and deformed, a further preferable technical scheme is that one end of the wire rope, which is close to the top cover, is provided with a second spring, the top cover is provided with a hanging ring, and the corresponding end of the second spring is provided with a hanging hook which is connected with the hanging ring on the top cover.

In order to prevent the detection plate from transitionally colliding with the bottom surface of the flange, the further preferred technical scheme is that the detection device comprises a detection seat, a mounting seat hole is formed in the lower end of the rotating shaft, the detection seat is in threaded connection with the mounting seat hole, a telescopic rod penetrating through the detection seat is arranged on the detection seat, one end of the telescopic rod, which is located in the mounting seat hole, is provided with a set of guide parts which are arranged around a collar shape, one end of the detection seat hole is provided with a set of guide grooves which are matched with the corresponding guide parts respectively, one end of the telescopic rod, which is located in the mounting seat hole, is also provided with a third spring which is in butt joint with the bottom surface of the mounting seat hole, the telescopic rod is propped against the bottom of the guide groove of the detection seat, the lower end of the telescopic rod is provided with a mounting groove, a detection head is arranged in the mounting groove, the position, which corresponds to the mounting groove, is radially provided with a wire hole and is communicated with the mounting groove, one end of the detection head, which is located in the mounting groove, is fixed in the mounting groove through a jackscrew, and the lower end of the detection head is provided with a right-angle ladder-shaped profiling plate.

In order to provide a clamping device with stable structure and good precision, a further preferable technical scheme is that the clamping device comprises a pair of V-shaped clamping blocks symmetrically arranged on a base, one V-shaped clamping block is fixed on the base, the other V-shaped clamping block is in sliding connection with the base through a guide rail, a cylinder is arranged on the base, which is far away from one side of the centers of the pair of V-shaped clamping blocks, of the guide rail, and the end part of a piston rod of the cylinder is connected with the V-shaped clamping block on the guide rail.

Compared with the prior art, the utility model has the beneficial effects that:

the driving mechanism and the traction device realize that the rotating shaft moves up and down and simultaneously rotates reciprocally in a certain angle range, so that the profiling detection plate can be ensured to rotate to a position overlapped with the section of the special-shaped groove in a vertical state, the outer contour of the profiling detection plate is matched with the inner contour of the special-shaped groove, a stable auxiliary detection tool is provided for detection personnel, the detection accuracy is improved, the labor intensity of the detection personnel can be reduced, and the production efficiency is improved;

the second spring is arranged at one end of the top cover and connected with the steel wire rope, so that the steel wire rope is prevented from being pulled to deform or the deflector rod and the annular bracket are prevented from being pulled to deform when the baffle rod abuts against the annular groove, and the precision and the service life of the detection tool are improved;

through the setting of telescopic link, can prevent the detection head with the work piece takes place collision deformation, causes detection device or flange's damage, has improved detection device's self preservation protects the function.

Drawings

FIG. 1 is one of the isometric views of the present utility model;

FIG. 2 is a second perspective view of the present utility model;

FIG. 3 is a top view of the present utility model;

FIG. 4 is a cross-sectional view A-A of FIG. 3 in accordance with the present utility model;

FIG. 5 is an enlarged view of part B of FIG. 4 in accordance with the present utility model;

in the figure: 10. a base; 20. a clamping device; 21. a cylinder; 22. a guide rail; v-shaped clamp blocks; 30. a flange; 31. a special-shaped groove; 40. a detection device; 41. a telescopic rod; 411. a guide part; 412. a wire hole; 413. a mounting groove; 42. a detection head; 43. profiling detection plate; 44. a detection seat; 441. a guide groove; 50. a traction device; 51. an annular groove; 52. a deflector rod; 53. an annular bracket; 54. a wire rope; 55. a first spring; 56. a rotating shaft; 561. a mounting seat hole; 57. a plug; 58. a guide rope ring; 59. a second spring; 60. a driving mechanism; 61. a servo motor; 62. a top cover; 63. a screw rod; 64. a guide rod; 65. a hanging ring; 70. a bracket; 80. a rolling bearing.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.

Examples

As shown in fig. 1 and fig. 2, the auxiliary detection tool for the flange end surface special-shaped groove comprises a base 10, wherein a vertically arranged driving mechanism 60 is arranged on the base 10, a vertically reciprocating support 70 is arranged on the driving mechanism 60, a rotating shaft 56 is arranged on the support 70, a traction device 50 is connected with the upper end of the rotating shaft 56, the rotating shaft 56 reciprocates around a shaft within a rotation angle defined by the traction device 50 while vertically reciprocating under the driving of the driving mechanism 60, a detection device 40 is arranged at the lower end of the rotating shaft 56, the detection device 40 at least comprises a profiling detection plate 43, and a clamping device 20 is arranged on the base corresponding to the lower part of the profiling detection plate 43;

specifically, a pair of vertically arranged guide rods 64 are arranged on the base 10, a top cover 62 is arranged at the upper end of each guide rod 64, a vertically arranged screw rod 63 is arranged between each guide rod 64, one end of each screw rod 63 is rotationally connected with the base 10 through a bearing, the other end of each screw rod 63 is rotationally connected with the top cover 62 through a bearing, a servo motor 61 is further arranged on the top cover 62, an output shaft of each servo motor 61 penetrates through the top cover 62 and is connected with each screw rod 63 through a key connection or a coupling, a pair of supports 70 in sliding fit with each guide rod 64 are arranged on each guide rod 64, each support 70 is in threaded fit with each screw rod 63, the support 70 moves along the corresponding guide rod 64 under the driving of each servo motor 61, a rotating shaft 56 is arranged on each support 70, a bearing seat is arranged on each support 70, and a rolling bearing 80 is in each bearing seat and is in rotational fit with each rotating shaft 56;

the bracket 70 is provided with a traction device 50 connected with the upper end of the rotating shaft 56, the traction device comprises a section of annular bracket 53, the bracket 70 corresponding to the outer side of the upper end of the rotating shaft 56 is also provided with a section of annular bracket 53 coaxial with the rotating shaft 56, the upper part of the section of the two ends of the annular bracket 53 is in a circular ring shape, the lower part of the section of the middle section of the annular bracket 53 is in a rectangular shape, the upper part of the section of the middle section of the annular bracket 53 is in a semicircular ring shape, the lower part of the section of the middle section of the annular bracket 53 is in a rectangular shape, the opening of the semicircular ring faces the direction away from the rotating shaft 56, the upper end of the rotating shaft 56 is provided with a deflector rod 52 extending radially outwards along the rotating shaft 56, one side of the annular bracket 53, which is close to the rotating shaft 56, penetrates through the upper half-ring of the annular bracket 53 to the semicircular ring, the upper half-ring of the annular bracket 53 is also provided with a section of annular groove 51 corresponding to the deflector rod 52, the end of the annular bracket 53 far away from the screw rod 63 is provided with a plug 57, the plug 57 is in threaded connection with the annular bracket 53, one end of the plug 57, which is positioned in the annular ring of the annular bracket 53, is provided with a first spring 55, one end of the first spring 55 is fixedly connected with the plug 57, the other end of the first spring 55 stretches out and draws back along the annular ring of the annular bracket 53 and is fixedly connected with one end of a steel wire rope 54, the other end of the steel wire rope 54 passes through the semicircular ring in the annular bracket 53 along the annular bracket 53 to the other end of the annular bracket 53 and extends outwards to a position close to the screw rod 63, a guide rope ring 58 is also arranged on the bracket 70 corresponding to the front of the screw rod 63, the guide rope ring 58 is fixed on the bracket 70, the other end of the steel wire rope 54 passes through the guide rope ring 58 to vertically extend upwards to the lower part of the top cover 62, the second spring 59 is fixedly connected with one end of the second spring 59, the other end of the second spring 59 is fixed on the top cover 62, one end of the deflector rod 52 positioned in the semicircular ring is fixed on the steel wire rope 54, and the deflector rod 52 drives the rotating shaft 56 to rotate reciprocally in an angle defined by the annular groove 51 of the annular bracket 53 under the traction of the steel wire rope 54;

as shown in fig. 4 and 5, a mounting seat hole 561 is formed at the lower end of the rotating shaft 56, the detecting device 40 is vertically disposed in the mounting seat hole 561, the detecting device 40 includes a detecting seat 44, the detecting seat 44 is in threaded connection with the mounting seat hole 561, a telescopic rod 41 penetrating through the detecting seat is disposed on the detecting seat 44, three guide portions 411 disposed around a collar are disposed at one end of the mounting seat hole 561, three guide grooves 441 are disposed at one end of the detecting seat 44 and are respectively matched with the corresponding guide portions 411, the guide grooves 441 do not penetrate through the detecting seat 44 in the axial direction from one end of the mounting seat hole 56, so that the telescopic rod 41 is vertically and downwardly abutted to the bottom of the guide groove 441, a third spring 45 is disposed at one end of the mounting seat hole 561 and abutted to the bottom surface of the mounting seat hole 561, the telescopic rod 41 is abutted to the bottom of the guide groove 413, the guide groove 41 is abutted to the mounting groove 413 of the detecting seat 44, the guide groove 41 is disposed in the mounting groove 413 along the radial direction, and is in a right-angle groove 413 formed at one end of the detecting head 41;

the base 10 below the detection device 40 is provided with a clamping device 20, the clamping device 20 comprises symmetrically placed V-shaped clamping blocks 23, one V-shaped clamping block 23 is fixed on the base 10, the other V-shaped clamping block 23 is in sliding connection with the base 10 through a guide rail 22, a cylinder 21 is arranged on the base 10 on one side, far away from the center of the pair of V-shaped clamping blocks 23, of the guide rail 22, and the end part of a piston rod of the cylinder 21 is connected with the V-shaped clamping block 23 on the guide rail 22.

Working principle: placing the flange 30 on a pair of V-shaped clamping blocks 23, driving the cylinder 21 to clamp the flange 30, and enabling the flange 30 to be offset relative to the detection head 42, enabling the detection plate 43 to be aligned with the special-shaped groove 31 on the flange 30, wherein the alignment needs to be corrected when the detection tool is assembled, and the correction is carried out through a standard block before each detection, and the detection can be used after the correction is qualified;

when the flange 30 is clamped by the pair of V-shaped clamping blocks 23, the servo motor 61 is started, the servo motor 61 drives the bracket 70 to move downwards along the guide rod 64, and as one end of the steel wire rope 54 is fixed on the top cover 62, when the bracket 70 moves downwards, the bracket 70 is far away from the top cover 62, the steel wire rope 54 pulls the first spring 55 to stretch along the inner circular ring of the annular bracket 53, meanwhile, the deflector rod 52 is driven by the steel wire rope 54 to rotate around the axis of the rotating shaft 56 along the annular groove 51 on the annular bracket 53, the rotating shaft 56 is driven to rotate while the deflector rod 52 rotates, namely the detection head 42 is driven to rotate, the detection head 42 synchronously rotates along with the downward movement of the bracket 70, namely, the profiling detection plate 43 at the lower end of the detection head 42 laterally enters the inside of the special-shaped groove 31 from the upper end of the special-shaped groove 31, then moves downwards while the profiling detection plate 43 rotates to a position coincident with the section of the special-shaped groove 31, the outer contour of the profiling detection plate 43 is matched with the inner circular ring of the special-shaped groove 31, the rotating angle of the deflector plate 43 is driven by the steel wire rope 54, the motor controls the axis of the annular bracket 56 to rotate along the annular groove 51, and the amount of the profiling plate 43 is kept to be contacted with the annular groove 51 when the lower end of the special-shaped groove 31 is contacted with the annular groove 51, the bottom of the servo motor, the profiling plate 43 is contacted with the bottom of the special-shaped groove 31, and the profiling plate is kept in a position, and the special-shaped groove is contacted with the special groove and the special-shaped groove 31, and the special-shaped groove is detected; so that the clearance between the special-shaped groove 31 and the profiling detection plate 43 can be plugged from the side surface of the special-shaped groove 31 through a plug gauge, if the clearance is not passed, the servo motor 61 works reversely after detection, the driving bracket 70 rises, the deflector rod 52 is driven to the other side of the annular groove 51 by the steel wire rope 54 under the action of the first spring 55, and the profiling detection plate 43 rotates to be separated from the special-shaped groove 31 while rising, so that the profile detection plate returns to the original state;

in order to prevent the profile modeling detection plate 43 from performing transitional collision with the bottom surface of the flange 30, the detection head 42 is mounted on the rotating shaft 56 through a telescopic rod 41, the upper end of the telescopic rod 41 is elastically abutted with the bottom in the mounting seat hole 561 through a third spring 45, when the detection plate 43 contacts with the bottom surface of the special-shaped groove 31, the profile modeling detection plate 43 is upwardly abutted with the third spring 45 along the guide groove 441 of the detection seat 44 along with the telescopic rod 41, and the profile modeling detection plate 43 is reversely abutted with the bottom surface of the special-shaped groove 31 due to the elastic abutment of the third spring 45 and the bottom in the mounting seat hole 561;

in order to prevent the deflector rod 52 from moving downwards to a specified displacement amount, when the deflector rod 52 is pressed against the side of the annular groove 51 of the annular bracket 53, the steel wire rope 54 is pulled to deform, or the deflector rod 52 and the annular bracket 53 are pulled to deform, one end of the steel wire rope 54, which is close to the top cover 62, is provided with a second spring 59, the rigidity of the second spring 59 is larger than that of the first spring 55, one end of the second spring 59 is fixedly connected with the steel wire rope 54, the other end of the second spring 59 is provided with a hook, the top cover 62 is correspondingly provided with a hanging ring 65, the second spring 59 is connected with the hanging ring 65 through the hook to form a connection with the top cover 62, so that the steel wire rope 54 pulls the deflector rod 52 to the side, which is close to the lead screw 63, of the steel wire rope 54 can pull the second spring 59 to deform, the detection precision is prevented from being influenced by transitional pulling on the side, which is close to the lead screw 63, of the deflector rod 52 abuts against the annular groove 51, and simultaneously, the angle of the rotating shaft is aligned with the profiled groove 31 when the side, which is close to the lead screw 63 is positioned, is aligned with the profiled groove 31;

as shown in fig. 3, a section of the annular support 53 is three-quarters of the complete annular support 53, one end of the annular support 53 is disposed right in front of the screw 63 corresponding to the support 70, so that the wire rope 54 extends outwards along one end of the annular support 53 to a position close to the front of the screw 53, the wire rope 54 is convenient to arrange, the length of the annular groove 51 controls the deflector rod 52 to rotate within a 90-degree range, and the initial position of the profiling detection plate 43 is parallel to the vertical direction of the section of the profiled groove 31, because the lower side of the profiling detection plate 43 is wider than the upper part of the profiled groove 31, the profiling detection plate 43 is convenient to enter the profiled groove 31, and interference between the profiling detection plate 43 and the profiled groove 31 is prevented.

The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical scheme of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.

Claims (7)

1. The utility model provides a flange terminal surface dysmorphism groove auxiliary detection frock, its characterized in that, the on-line screen storage device comprises a base, be equipped with the actuating mechanism of vertical setting on the base, be equipped with vertical reciprocating motion's support on the actuating mechanism, be equipped with the pivot on the support, be equipped with draw gear and pivot upper end connection on the support, the pivot is in the reciprocating rotation of rotation angle that draw gear prescribes a limit to around the axle when vertical reciprocating motion under actuating mechanism's drive, the pivot lower extreme is equipped with detection device, detection device includes at least one profile modeling pick-up plate, profile modeling pick-up plate below corresponds be equipped with clamping device on the base.

2. The flange end face abnormal-shaped groove auxiliary detection tool according to claim 1, wherein the driving mechanism comprises a pair of vertically arranged guide rods, a top cover is arranged at the upper ends of the guide rods, a vertically arranged screw rod is arranged between the pair of guide rods, one end of the screw rod is rotatably connected with the base through a bearing, the other end of the screw rod is rotatably connected with the top cover through a bearing, a servo motor is further arranged on the top cover, and an output shaft of the servo motor penetrates through the top cover and is connected with the screw rod.

3. The auxiliary detection tool for the flange end face abnormal groove according to claim 2, wherein the traction device comprises an annular support, one section of the annular support is coaxially arranged on the support corresponding to the outer side of the upper end of the rotating shaft, a deflector rod extending outwards in the radial direction of the rotating shaft is arranged at the upper end of the rotating shaft, the deflector rod penetrates through the annular support from one side, close to the rotating shaft, of the annular support to the inner annular of the annular support, an annular groove is further formed in the annular support, one end, far away from the screw rod, of the annular support is provided with a plug, the plug is in threaded connection with the annular support, one end, located in the annular ring, of the plug is provided with a first spring, one end of the first spring is connected with the plug, the other end of the first spring stretches out and draws back along the inner annular ring of the annular support and is connected with one end of a steel wire rope, the other end of the steel wire rope extends outwards from the inner annular ring of the annular support to the other end of the annular support to a position, close to the screw rod, a guide ring is further arranged on the support corresponding to the front of the screw rod, the other end of the steel wire rope penetrates through the guide ring to the upper end of the guide ring and is located in the upper end of the steel wire rope.

4. The flange end face abnormal-shaped groove auxiliary detection tool according to claim 3, wherein the upper portions of the sections of the two ends of the annular support are circular, the lower portions of the sections of the two ends of the annular support are rectangular, the upper portions of the sections of the middle section of the annular support are semicircular, the lower portions of the sections of the middle section of the annular support are rectangular, and the semicircular openings face the direction away from the rotating shaft.

5. The flange end face abnormal-shaped groove auxiliary detection tool according to claim 3, wherein a second spring is arranged at one end, close to the top cover, of the steel wire rope, a lifting ring is arranged on the top cover, and a lifting hook is arranged at the corresponding end of the second spring and is connected with the lifting ring on the top cover.

6. The flange end face abnormal-shaped groove auxiliary detection tool according to claim 1, wherein the detection device comprises a detection seat, a mounting seat hole is formed in the lower end of the rotating shaft, the detection seat is in threaded connection with the mounting seat hole, a telescopic rod penetrating through the detection seat is arranged on the detection seat, a group of guide parts which are arranged around a collar shape are arranged at one end of the telescopic rod, a group of guide grooves are formed in one end of the detection seat hole and are matched with corresponding guide parts respectively, a third spring is further arranged at one end of the telescopic rod, the telescopic rod is abutted against the bottom of the guide groove of the detection seat, a mounting groove is formed in the lower end of the telescopic rod, a detection head is arranged in the mounting groove, the position of the telescopic rod corresponding to the mounting groove is radially provided with a wire hole and is communicated with the mounting groove, one end of the detection head, which is located in the mounting groove, is fixed in the mounting groove through a jackscrew, and the lower end of the detection head is provided with a right-angle profiling plate in the shape.

7. The flange end face special-shaped groove auxiliary detection tool according to claim 1, wherein the clamping device comprises a pair of symmetrically arranged V-shaped clamping blocks on a base, one V-shaped clamping block is fixed on the base, the other V-shaped clamping block is in sliding connection with the base through a guide rail, a cylinder is arranged on the base on one side, far away from the centers of the pair of V-shaped clamping blocks, of the guide rail, and the end part of a piston rod of the cylinder is connected with the V-shaped clamping block on the guide rail.