JP7049091B2 - Tightening device - Google Patents

Description

The present invention relates to a tightening device for fixing a length measuring probe on a carrier.

Patent Document 1 discloses a tightening device in the form described at the beginning.
The tightening device includes a tightening sleeve that grips the probe shaft of the length-measuring probe from the periphery and tightens in a circumferential shape. The tightening sleeve is slit and has two tightening surfaces that are axially separated from each other, point inward, and extend strip-likely around the perimeter. Axial, between these tightening surfaces, a position adjusting member acts on the tightening sleeve, where the working surface is radially flexible via the solid link portion, the tightening sleeve. It is provided in.

In the structure according to this prior art, it is a problem that the tightening force is unevenly distributed over the surroundings and exerts a sufficient tightening force for tightening the probe shaft through the solid link portion. That is a disadvantage.

German Federal Republic Utility Model No. 202 15 754 U1

An object underlying the present invention is to provide a tightening device, which optimizes the circumferential tightening of the probe shaft of the length measuring probe.

This problem is solved by a tightening device having the characteristics of claim 1 according to the present invention.

Tightening devices configured in accordance with the present invention have a tightening sleeve for gripping from around the probe shaft, wherein the tightening sleeve is a plurality of bending beams distributed around the perimeter and extending axially. It has an array and these bending beams are movable with respect to the probe shaft.
This tightening device also has a tensioning device.
This tensioning device surrounds the tightening sleeve (umvibt) and
This tensioning device is about the diameter of this tensioning device
The tensioning device exerts an inwardly oriented radial force on the tightening sleeve, thereby moving the bending beam with respect to the probe shaft.
The position is adjustable .
The tightening sleeve and the tensioning device perform the force action of the tensioning device on the arrangement of the bending beams on a first plane of action provided at a first position in the axial direction, and. It is formed so as to be performed on a second working surface provided at a second position in the axial direction separated from the first position in the axial direction.

An advantageous embodiment of the present invention is given from the configuration described in the dependent claims.

The first surface of action and the second surface of action can be provided, respectively, in the manner of a ridge in a bending beam or in a tensioning device. The tensioning device may be configured as a tensioning ring or tensioning clamp known per se.
The tensioning device is formed from a plurality of shell bodies that are provided around the tightening sleeve and grip the tightening sleeve from the surroundings, especially when these shell bodies are movable inward relative to each other. It is advantageous. Due to the radial mobility of these tightening sleeves, and thus the probe shaft, towards the center, these multiple shells, the symmetrical introduction of radial forces to this tightening sleeve induces misturning. Guaranteed, with no force component to do.
In particular, in that case, each shell body of the shell body grips a plurality of bending beams among the bending beams provided over the surroundings from the surroundings, and each shell body of these shell bodies grips the plurality of bending beams from the surroundings. , The same number of bending beams are gripped from the surroundings, so that the force action of each shell of the shell on the arrangement of these bending beams is a plurality of first working surfaces within the first working surface, and , Acts on a plurality of second working surfaces within the second working surface.

Bending beams are attached on both sides, and each bending beam of these bending beams is on one of these first working surfaces, and from this first working surface. It is particularly advantageous to have one of these second working surfaces in a state of being separated in the axial direction.
In particular, at that time, the first working surface and the second working surface are provided symmetrically in the axial direction with respect to the center (Mitte) of the bending beam.

The tightening sleeve has a ring, one at each end, which is rigid against bending and thus advantageously closed, to which the bending beam is provided. That is, it is attached (eingespannt).
The first working surface and the second working surface are each provided at a distance from the ring on the end side, that is, from the mounting position. The end-side portion of the bending beam, located between each ring and the adjacent working surface, serves as a bending position when a radial force acts on these working surfaces. This bending position on the end side acts as a kind of link portion, and the bending beam bends inward around this link portion when a radial force acts.
The intermediate portion of each bending beam between the first working surface and the second working surface is elastically displaced in the radial direction and is flexibly configured. During the action of radial forces on these planes of action, this causes, first of all, the middle portion of the bend beam to bend inward and with the inner surface of the bend beam, the probe shaft. Contact with. With the increasing radial force, the area (inner surface) that each of these bending beams presses against the probe shaft also increases. The elasticity of this intermediate portion serves to ensure that the inner surface of this portion of each of these bend beams is in uniform contact with the probe shaft.
These end-side bending positions are further increased-induced by the tensioning device-with increasing radial forces, and similarly the forces from both rings are also captured and thereby the probe shaft. It works for the avoidance of unacceptable deformation of.

The optional configuration of the tightening sleeve is a plurality of first bending beams that are distributed around and separated from each other, mounted on one side and extending in the first axial direction starting from the mounting position. The first bending beam of these first bending beams can be pressed inwardly against the probe shaft, and the first bending beam of each of the first bending beams is said to have. It has one first working surface of the first working surface and
Further, it has a plurality of second bending beams distributed around the periphery and separated from each other, mounted on one side and extending in the direction opposite to the first axial direction, starting from the mounting position. The second bending beam can be pressed inward against the probe shaft, and the second bending beam of each of the second bending beams is the second bending beam. It has one second working surface among the working surfaces of the above.

The tightening sleeve has one bend-rigid, especially closed ring at each end, in which case.
One of these rings is provided with a mounting position for the first bending beam mounted on one side, and the other ring of both rings is mounted on one side. It is advantageous if a bending beam mounting position is provided.

Similarly, the first working surface and the second working surface are provided again, respectively, apart from the ring on the end side, that is, from the mounting position. The end-side portion of the bending beam, located between each ring and the adjacent working surface, serves as a bending position when a radial force acts on these working surfaces. This bending position on the end side acts as a kind of link portion, and the bending beam bends inward around this link portion when the radial force acts.
The portion of each bending beam that extends further behind each working surface is elastically configurable and flexible in the radial direction. During the action of radial forces on these planes of action, this causes, first of all, the further extending portion of the bending beam to bend inward and with the inner surface of the bending beam. , Contact the probe shaft. With the increasing radial force, the area (inner surface) that each of these bending beams presses against the probe shaft increases.

Yet another optional configuration of the tightening sleeve has one closed ring, in which the ring is provided with a mounting position for a first bending beam mounted on one side. , And a mounting position for the second bending beam mounted on one side is provided.

The first working surface and the second working surface are also provided here, respectively, at a distance from the ring, i.e., from the attachment position (Einspanstelle). The portion of the bending beam that exists between this ring and the adjacent working surfaces serves as a bending position when the radial force acts on these working surfaces. This bending position acts as a kind of link portion, and the bending beam bends inward around this link portion when the radial force acts.
The portion of each bending beam that extends further behind each working surface is elastically configurable and flexible in the radial direction. During the action of radial forces on these planes of action, this causes, first of all, the further extending portion of the bending beam to bend inward and with the inner surface of the bending beam. , Contact the probe shaft. With the increasing radial force, the area (inner surface) that each of these bending beams presses against the probe shaft increases.

Further details and advantages of the present invention will be described in the context of the drawings, based on the following description of the Examples.

It is a figure of the length measuring device fixed to the carrier by the tightening device formed according to this invention. It is a perspective view of a tightening device. It is sectional drawing in the longitudinal direction of a tightening apparatus. It is a perspective view of the tightening sleeve of the tightening apparatus according to 1st Embodiment. It is a perspective view of the tensioning device of a tightening device. FIG. 3 is a perspective view of the second configuration of the tightening sleeve. FIG. 3 is a perspective view of a third configuration of the tightening sleeve. It is a perspective view of the 4th structure of a tightening sleeve. FIG. 5 is a perspective view of the fifth configuration of the tightening sleeve.

1-5 show a first embodiment of the invention, described in detail below.

FIG. 1 shows a device for length measurement, which comprises a length measuring probe 1 having a probe shaft 3 and a contact pin 4 guided in the longitudinal direction X within the probe shaft. There is.
For the measurement work, the probe shaft 3 of the length measuring probe 1 is tightened in a circumferential shape in the longitudinal perforation of the carrier 2, and the length measuring probe 1 is an immovable carrier 2. It is fixed to. For this purpose, a tightening device formed according to the present invention is fitted in the longitudinal perforation, which tightens the probe shaft 3 of the length measuring probe 1 in a circumferential shape. A screw 5 is provided for this tightening, and the screw is screwed laterally into the carrier 2 with respect to the longitudinal direction X and exerts a radial force.
This tightening device holds the probe shaft 3 of the length measuring probe 1 on the carrier 2 in a fixed position on the one hand, and on the other hand, with respect to the probe shaft 3 of the length measuring probe 1 over the periphery. However, it is formed to exert only a tightening force as large as necessary for stable holding. To achieve a space-saving structure for the length measuring probe 1, i.e., the guides for the contact pins 4 are often provided within the region of the tightening position. This guide is usually a ball guide or a slide guide between the probe shaft 3 and the contact pin 4.

This tightening device will be described in detail below with reference to FIGS. 2-5.
The tightening device comprises a tightening sleeve 61, which is a main component, and a tensioning device in the form of a plurality of shells 7 and 8 that are rigid against bending. FIG. 4 shows a first embodiment of the tightening sleeve 61.

FIG. 5 shows an array of shells 7 and 8, which can be used in combination with the tightening sleeves 61-65 of all the embodiments described in more detail below. And, therefore, a tightening device is formed.

The inner wall of the tightening sleeve 61 grips the probe shaft 3 from the periphery and forms a tightening surface for tightening the probe shaft 3. The tightening sleeve 61 is provided over the periphery and is surrounded by shell bodies 7 and 8 that grip the tightening sleeve 61 from the periphery.
By the action of the screw 5, these shells 7 and 8 are movable relative to each other inward and toward the center of the tightening sleeve 61 and thus of the probe shaft 3 to be tightened. .. As a result, the shell bodies 7 and 8 exert a force necessary for tightening the probe shaft 3 on the tightening sleeve 61.

In the tightening sleeve 61 and the shell bodies 7 and 8, the force action of the shell bodies 7 and 8 is provided at the first position X1 in the axial direction with respect to the tightening sleeve 61. As performed at K1 to K4 and at second working surfaces K5 to K8 provided at the second axial position X2 separated from the axial first position X1. It is formed.
These working surfaces K1 to K8 are formed as planar ridges in the tightening sleeve 61. In a method not shown, however, ridges in shell bodies 7 and 8 are also possible.

The tightening sleeve 61 has a plurality of bending beams 100 that are evenly distributed around the perimeter and are circumferentially spaced apart from each other, each mounted on both sides and extending in the axial direction X (longitudinal direction). There is. Each-four in this embodiment-to this bending beam 100, respectively, one of the first working surfaces K1 to K4, and the axial direction from this first working surface. A second working surface of the second working surfaces K5 to K8 is provided in a state of being separated from the second working surface.
Both of these first working surfaces K1 to K4 are provided at positions X1 in the same axial direction. Both of these second working surfaces K5 to K8 are provided in the axial direction X at the axial position X2 separated from the first position X1 in the axial direction.

The positions X1 and X2 in the axial direction are provided symmetrically with respect to the center of the bending beam 100, respectively. Further, these positions X1 and X2 are each separated from the mounting position on the end side of the bending beam 100. These mounting positions are then formed by rings 13 and 14 that are rigid against bending on the end side, respectively.

The first working surfaces K1 to K4 and the second working surfaces K5 to K8 are provided apart from the rings 13 and 14 to which they belong, respectively, in the axial direction.
The end-side portions of the bending beams 100, 101 between the mounting position and the working surfaces K1 to K8, respectively, are elastically formed in the radial direction.

Similarly, between the first working surfaces K1 to K4 and the second working surfaces K5 to K8, the bending beams 100 and 101 are elastically formed in the radial direction, respectively.

It is particularly advantageous when one of the shell bodies 7 and 8 grips a plurality of bending beams in the bending beam 100 from the surroundings, respectively. Each of the shell bodies 7 and 8 that are rigid against bending applies a radial force to the tightening sleeve 61, to the first working surfaces K1 to K4, and to the second working surfaces K5 to K8. Communicate to. By this, the introduction of uniform force on the inner surface of the bending beam and the close contact are ensured through the axially extended surface.

In particular, each of the shell bodies 7 and 8 holds the same number of bending beams 100 from the surroundings. With this configuration, symmetrical force transmission from the shells 7 and 8 to the tightening sleeve 61 and further to the probe shaft 3 is achieved over the entire perimeter.

In a specific embodiment, the tightening sleeve 61 has four bending beams 100 that are evenly distributed over the perimeter (360 °) and mounted on both sides, in which the tightening sleeve 61 is mounted from the perimeter. Two shell bodies 7 and 8 to be gripped are provided, and each shell body in these shell bodies grips two bending beams in each of these bending beams 100 from the surroundings.

The plurality of shell bodies 7 and 8 are connected to each other via the coupling means 9. In each of these coupling means 9, two shell bodies of the shell bodies 7 and 8 are immovably connected to each other in the axial direction X, and can move relative to the center of the tightening sleeve 61. It is formed so as to be connected to each other. A particularly simple structure is given when the binding means 9 are each formed by at least one solid link portion.
In a specific embodiment, the connecting means 9 between the two shell bodies 7 and 8 that are adjacent to each other in a circumferential direction extend relative to each other in the axial direction and are displaced in a staggered manner in a circumferential shape. Formed by the two cuts formed, the axially extending web that remains between these cuts forms an axially rigid solid link.

It is possible that a morphologically engaging joint is provided between the tightening sleeve 61 and the shells 7 and 8 to prevent erroneous rotation. In the illustrated embodiment, this geometrically engaging coupling is with the outer flat portion 11 in at least one of the rings 13, 14 and in the shell bodies 7, 8. It is formed by a contact surface 12 corresponding to this flat portion in at least one shell body.

One of the rings 13 and 14 provided on the end side comprises a chamfered portion 15 on the end side. The chamfered portion 15 is an insertion assisting portion, and the tightening sleeve 61 is inserted into the arrangement of the shell bodies 7 and 8 in the axial direction, and is pre-assembled-the tightening sleeve 61 and the shell body 7. Consists of 8-Structural units can be manufactured.
This pre-assembly is carried out in such a way that the tightening sleeve 61 having the chamfered portion 15 is slid with respect to the shell bodies 7 and 8 in the axial direction, and the shell bodies 7 and 8 are in that case. In addition, under the radial deviation of the coupling means (solid link portion) 9, these shell bodies 7 and 8 are radially expanded until they are located between both rings 13 and 14. ..
At this position, the elastic coupling means 9, respectively, in such a way that the collar portions of the rings 13 and 14 pointing outward in the radial direction grip these shell bodies 7 and 8 from above (ueberglift). The shell bodies 7 and 8 again occupy the starting position of these shell bodies, and both rings 13 and 14 hold the shell bodies 7 and 8 axially on the tightening sleeve 61. To work.

The radial tightening of the probe shaft 3 on the carrier 2 is such that the screw 5 is radial with respect to one of the shell bodies 7 and 8 and more advantageously, the first working surface K1. It is introduced in such a way that it acts at a central position in the axial direction between the K4 and the second working surfaces K5 to K8. At the position of the screw 5, a notch 10 is formed in the shell body 7 for positioning the screw 5.

FIG. 6 illustrates a second embodiment of the tightening sleeve 62.
In the difference from the first embodiment, the bending beam 101 is weakened, respectively, between the first working surface K1, K2, K3, K4 and the second working surface K5, K6, K7, K8. It is composed of. The weakening portion 16 is advantageously provided at the center between the first position X1 in the axial direction and the second position X2 in the axial direction. The weakening portion 16 of the bending beam 101 can achieve a relatively uniform planar contact of the bending beam 101 with respect to the probe shaft 3.

A third embodiment of the tightening sleeve 63 will be described with reference to FIG. 7.
In the differences from the embodiments described above, the first working surfaces K1 to K4 are attached to the first bending beam 102 mounted on one side, and the second working surfaces K5 to K8 are mounted on one side. It is provided on the second bending beam 103.

The first bending beam 102 mounted on one side is evenly distributed over the perimeter and is circumferentially spaced apart from each other. The first bending beam mounted on one side extends in the first axial direction + X from the ring 13 (mounting position) which is closed to the bending on the upper side.
The second bending beam 103 mounted on one side is similarly evenly distributed over the perimeter and, starting from the lower ring 14 (mounting position), in the opposite direction of the first axis, i.e. , Extends in the axial direction-X. The first bending beam 102 and the second bending beam 103 can be displaced in the direction of the probe shaft 3 and can be pressed against the probe shaft 3.

Both rings 13 and 14 are coupled to each other via a rigid web 17.

In the embodiments already described, the bending beams 100, 101, 102, 103 are at least sufficiently uniform and sufficiently inside one of the first working surfaces K1 to K4. It is guaranteed to press against the probe shaft 3 with the end of the second working surface reaching the other end of the second working surface K5 to K8 (reichend).

A fourth embodiment of the tightening sleeve 64 will be described with reference to FIG.
There is also a first bending beam 104 that is similarly distributed and separated from each other, mounted on one side and extending in the first axial direction + X with the mounting position as the starting point. Each first bending beam in one bending beam has one first working surface among the first working surfaces K1 to K4.
Further, a plurality of second bends that are distributed across the perimeter and separated from each other, mounted on one side, and extend in the opposite direction of the first axis, i.e., in the -X direction, starting from the mounting position. A beam 105 is provided, and each second bending beam of these second bending beams has one second working surface among the second working surfaces K5 to K8.
In a difference from the previous embodiment, only one closed ring 20 is provided, the ring being provided with a first bending beam 104 and a second bending beam 105, i.e., mounting. Has been done.

A fifth embodiment of the tightening sleeve 65 will be described with reference to FIG.
The tightening sleeve 65 has a plurality of bend beams 106 that are distributed across the perimeter and separated from each other, mounted on one side and extending in the axial direction, with these bend beams inward. , Can be pressed against the probe shaft 3. One of these bending beams 106 has a bending beam, one of the first working surfaces K1 to K4, and one of the second working surfaces K5 to K8, respectively. Have. All of these bending beams 106 are provided in one ring 21, and all of them are directed in the direction starting from this ring 21.

1 Length measuring probe 2 Carrier 3 Probe shaft 4 Contact pin 5 Screw 7, 8 Tensioning device, shell body 9 Coupling means 10 Notch 11 Flat part 12 Contact surface 13, 14 Ring 15 Chamfering part 16 Weak part 17 Web 20 , 21 Ring 61, 62, 63, 64, 65 Tightening Sleeve 100, 101, 102, 103, 104, 105, 106 Bending Beam 100
K1, K2, K3, K4 1st working surface K5, K6, K7, K8 2nd working surface X1 1st position in the axial direction X2 2nd position in the axial direction X Longitudinal direction, + X 1st Axial direction-X Axial direction

Claims (19)

A tightening device for fixing the length measuring probe (1) on the carrier (2), and this tightening device
-Has a tightening sleeve (61-65) for gripping the length measuring probe (1) from around the probe shaft (3).
The tightening sleeves (61-65) have an array of plurality of bend beams (100-106) distributed around and extending axially, and these bend beams are attached to the probe shaft (3). On the other hand, it is movable
-Has a tensioning device (7, 8) and
This tensioning device surrounds the tightening sleeves (61 to 65) and
This tensioning device is about the diameter of this tensioning device
The tensioning device exerts an inwardly oriented radial force on the tightening sleeves (61-65), which causes the bending beam (100-106) to act on the probe shaft (3). To move
Adjustable position ,
The tightening sleeves (61 to 65) and the tensioning device (7, 8)
The force action of the tensioning device (7, 8) on the arrangement of the bending beams (100 to 106) is provided at the first position (X1) in the axial direction, and the first action surface (K1 to K4) is provided. ), And at the second working surface (K5 to K8) provided at the second position (X2) in the axial direction separated from the first position (X1) in the axial direction. like,
Being formed and
The tensioning device is a plurality of shell bodies (7, 8) provided around the tightening sleeve (61 to 65) and gripping the tightening sleeve from the surroundings, and these shell bodies are radially the tightening. Being movable to the center of the sleeve (61-65),
A tightening device characterized by. The first working surfaces (K1 to K4) are provided, respectively, in the form of a ridge in the bending beam (100 to 106) or in the tensioning device (7, 8), and.
With the second working surface (K5 to K8) separated from the raised portion in the axial direction, the second working surfaces (K5 to K8) are respectively in the bending beam (100 to 106) or in the tensioning device (7, 8). ), The tightening device according to claim 1, wherein the tightening device is provided in the form of a raised portion. Each of the shell bodies (7, 8) grips a plurality of bending beams among the bending beams (100 to 106) provided over the periphery from the surroundings, and the shell body. Each shell body of (7, 8) grips the same number of the bending beams (100 to 106) from the surroundings, and
The force action of each shell body of the shell bodies (7, 8) on the arrangement of the bending beams (100 to 106) is a plurality of first working surfaces in the first working surface (K1 to K4). , And the tightening device according to claim 1 , wherein the tightening device acts on a plurality of second working surfaces among the second working surfaces (K5 to K8). The shell bodies (7, 8) are connected to each other via one connecting means (9), and the connecting means are connected to each other.
As such as the coupling means, each of which has two shells (7, 8) connected to each other immovably in the axial direction X and movably connected to each other in the radial direction.
The tightening device according to any one of claims 1 to 3, wherein the tightening device is formed. The tightening device according to claim 4, wherein the coupling means (9) is formed as a solid link portion. An erroneous rotation prevention is formed between the tightening sleeves (61 to 65) and the shell bodies (7, 8) between the tightening sleeves (61 to 65) and these shell bodies (7, 8). The tightening device according to any one of claims 1 to 5, wherein a joint portion that engages in shape is provided. At least one shell body (7) in the shell body is for positioning the screw 5 between the axial first position (X1) and the axial second position (X2). The invention according to any one of claims 1 to 6 , wherein the shell body (7) has a notch portion (10) and is movable in the radial direction by the screw. Tightening device. The bending beams (100, 101) are attached on both sides in such a way that these bending beams are pivotally attached to the ring (13, 14) on the end side, respectively, and the bending beam is used. The respective bending beams of (100, 101) are between these rings (13, 14), one of the first working surfaces (K1 to K4), and the second working surface. The tightening device according to any one of claims 1 to 7, wherein the tightening device has one second working surface among the working surfaces K5 to K8. The first working surface (K1 to K4) and the second working surface (K5 to K8) are axially separated from the rings (13, 14) provided to each of the first working surface (K1 to K4). The tightening device according to claim 8 , wherein the portion on the end side of the bending beam (100, 101) is elastically formed in the radial direction. .. The bending beam (100, 101) is elastically formed in the radial direction between the first working surface (K1 to K4) and the second working surface (K5 to K8), respectively. The tightening device according to claim 8 or 9, wherein the tightening device is provided. One of claims 8-10 , wherein the tightening sleeve (61, 62) has four bending beams (100, 101) evenly distributed over the perimeter and attached on both sides. The tightening device described in one. The tightening sleeves (63, 64) are distributed around and separated from each other, are mounted on one side and extend in the first axial direction (+ X) starting from the mounting position of the tightening sleeve. It has a plurality of first bending beams (102, 104), the first bending beam being movable inward with respect to the probe shaft (3), and these first bending beams. Each first bending beam of the bending beams has one first working surface of the first working surfaces (K1 to K4), and
The tightening sleeves (63, 64) are mounted on one side and extend from the mounting position of the tightening sleeve, which is distributed around and separated from each other, in the direction opposite to the first axial direction. It has a plurality of second bending beams (103, 105), and these second bending beams are movable inward with respect to the probe shaft (3), and these second bending beams are formed. Claim 1 is characterized in that each of the second bending beams of the two bending beams has one second working surface among the second working surfaces (K5 to K8). The tightening device according to any one of 7 to 7 . The first working surface (K1 to K4) and the second working surface (K5 to K8) are provided separately from the mounting positions of the respective bending beams (102 to 105), respectively. The tightening device according to claim 12 , wherein the end portion of the bending beam (102 to 105) is elastically formed in each of the bending beams (102 to 105). The tightening sleeve (63) has one ring (13, 14) at each end, and the tightening sleeve (63).
One of these rings (13) is provided with a mounting position for the first bending beam (102) mounted on one side and is mounted on the other ring (14) on one side. The tightening device according to claim 12 or 13, wherein the mounting position of the second bending beam (103) is provided. The tightening device according to claim 14, wherein both the rings (13, 14) are coupled to each other via a web (17) extending in the axial direction. The tightening sleeve (64) has one ring (20), which is provided with a mounting position for a first bending beam (104) mounted on one side, as well as on one side. The tightening device according to claim 12 or 13, wherein the mounting position of the mounted second bending beam (105) is provided. The tightening sleeve (65) has a plurality of unilaterally mounted and axially extending bending beams (106) that are distributed around and separated from each other, and these bending beams are contained therein. It is possible to deviate toward the probe shaft (3), and each bending beam in the bending beam is one of the first of the first working surfaces (K1 to K4). The tightening according to any one of claims 1 to 7 , wherein the working surface and one of the second working surfaces (K5 to K8) have a second working surface. Device. Use of the tightening device according to any one of claims 1 to 17 for fixing the probe shaft (3) of the length measuring probe (1) in the perforation of the carrier (2). It is a device for measuring length, and this device is
One length measuring probe (1) and one carrier (2) having a hollow cylindrical probe shaft (3) and contact pins (4) movably supported in the probe shaft. Equipped with
The probe shaft (3) of the length measuring probe (1) is fixed to this carrier.
The carrier (2) has one perforation, in which a tightening device (61-65) configured according to any one of claims 1 to 17 is loaded and ,
The length measuring device is such that the screw (5) is screwed into the carrier (2) in the radial direction and the radial force is applied to the tension device (7, 8). A device for tightening the probe shaft (3) of the probe (1) in a circumferential shape.

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