coordinate measuring machine

Abstract

The present invention relates to a coordinate measuring instrument having a sleeve and a probe or sensor or a rotation / pivot joint, the probe or sensor being disposed on the rotation / pivot joint, and / or an interface, wherein the probe or sensor or the adapter of the rotation / pivot joint and / or the interface are at least partially disposed within the sleeve.

Description

Technical Field

[0001] This invention relates to a coordinate measuring instrument having a pinole and a probe or sensor or a rotating / pivoting joint or rotary joint, along with a probe or sensor mounted on the rotating / pivoting joint and / or an interface. The interface is used for the installation and / or replacement of the probe or sensor or the rotating / pivoting joint with high positioning accuracy. Background Technology

[0002] Practice has shown that tactile and non-tactile sensors can be used to measure workpiece dimensions with a coordinate measuring machine, and these sensors can be fixedly or detachably mounted on the coordinate measuring machine.

[0003] Coordinate measuring instruments, as we know from practice, consist of multiple moving axes that allow the sensor to move in three dimensions, thus enabling the measurement of workpiece dimensions.

[0004] The sensor or rotating / pivoting joint is also called the probe head, and the probe head is called the sensor or rotating / pivoting joint.

[0005] The tactile probe consists of a fixed part and a movable part. The fixed part is fixedly or detachably connected to a shaft of a coordinate measuring machine, typically a sleeve. The movable part is movable relative to the fixed part and carries a stylus, which is a long, narrow rod with a contact, such as a ball, attached to one end. Other contacts include points or spherical discs. The other end of the stylus is fixed to the movable part of the probe, which moves relative to the fixed part when the contact contacts the workpiece surface. If the stylus deviates above a predetermined value, contact with the workpiece is detected.

[0006] The so-called measuring probe also includes a fixed part and a movable part that moves relative to the fixed part. The fixed part is fixedly or detachably connected to the shaft of the coordinate measuring instrument, typically a sleeve. Using a suitable measuring mechanism, the offset of the movable part relative to the fixed part is continuously measured. In the case of a so-called switch probe, the offset is displayed only by means of an electrical switch pulse. A reset force acts on the movable part of the probe so that the probe is in a predetermined position relative to the fixed part of the probe when no external force is applied to the stylus.

[0007] In addition, the following coordinate measuring instrument belongs to the prior art (DE102004010083B4), in which the probe has multiple cradles interconnected by spring parallelogram plates.

[0008] To meet as many different measurement tasks as possible, the tactile probe or measurement probe has a mechanical interface into which different stylus configurations can be inserted or automatically swapped.

[0009] Furthermore, optical sensors are existing technology (DE102007054915A1), and non-contact optical measurement methods can be performed using optical sensors.

[0010] To measure complex objects such as engine units using a coordinate measuring machine (CMM), not only is frequent changing of the stylus configuration necessary, but also relatively frequent changing of the probe or sensor. The probe or sensor is typically mounted on a sleeve of the CMM. Different probes or sensors can be installed in what is called a probe mount or sensor mount for different measurement tasks. The probe or sensor is frequently and automatically changed by the CMM, depending on which measurement task requires a specific probe or sensor to be changed. However, manual changing is also possible.

[0011] When a rotating / pivoting joint, probe, sensor, or stylus is received from the storage room, i.e., the device that stores rotating / pivoting joints, probes, sensors, or styluses that are not needed, a number of movements of the coordinate measuring machine are performed along at least two axes, such as the insertion of the clamping hook, the movement of the clamping hook, and the protrusion of the stylus seat from the support.

[0012] Coordinate measuring instruments with a portal frame structure, especially those with a sleeve, are known from practice to have a probe, sensor, or rotation / pivot joint that can be interchangeably mounted on the sleeve.

[0013] The following implementation method has also been learned from practice, in which a so-called interface is installed on the sleeve. A rotating / pivoting joint, a probe, or a sensor can be interchangeably installed on the interface.

[0014] In particular, in coordinate measuring machines with an automated or manual probe changing device, such as the portal-type coordinate measuring machine according to DE102019122049A1, the probe changing device reduces the predetermined measurement height that is fixed by the portal-type coordinate measuring machine. Therefore, the usable measurement area height is reduced by the probe changing device.

[0015] This means that with the measurement space reduced, users must use larger coordinate measuring machines, which are expensive and have large measurement errors. Summary of the Invention

[0016] The technical problem upon which this invention is based is to provide a coordinate measuring instrument having a probe or sensor or a rotation / pivot joint or a rotation / pivot joint and / or an interface having a probe or sensor mounted on the rotation / pivot joint, which still has a large measuring space.

[0017] This technical problem is solved by a coordinate measuring instrument having the features of the first aspect of the present invention.

[0018] The coordinate measuring instrument according to the present invention has a sleeve and

[0019] - Probe head, or

[0020] -Sensor, or

[0021] - Rotation / pivot joint, or

[0022] - A rotating / pivoting joint, with a probe or sensor mounted on the rotating / pivoting joint, and / or

[0023] -interface,

[0024] Its characteristic is that the probe or sensor or the adapter of the rotation / pivot joint and / or the interface is at least partially housed within the sleeve.

[0025] The sleeve is typically designed in a tubular shape. Electrical wires or, for example, fiberglass cables that should not be bent are usually housed within the sleeve. However, sufficient space is provided within the sleeve to at least partially house the interface, probe, sensor, or adapter for a rotating / pivoting joint.

[0026] The design saves space used for measuring workpieces.

[0027] By means of the coordinate measuring instrument of the present invention, the measuring space is increased, thereby enabling the measurement of larger workpieces.

[0028] According to the present invention, the probe or sensor or adapter or the interface of the rotating / pivoting joint is at least partially housed within the sleeve.

[0029] In the case of a rotary / pivot joint, a portion of the rotary / pivot joint, namely the fixed portion of the rotary / pivot joint, is advantageously at least partially housed within the sleeve. This fixed portion of the rotary / pivot joint is referred to as an adapter.

[0030] A probe or sensor is preferably mounted on the rotation / pivot joint. The probe or sensor is preferably removably mounted on the rotation / pivot joint.

[0031] If an interface is provided, the probe or sensor or rotation / pivot joint is preferably replaceable and at least partially housed in the interface in a most reproducible support manner.

[0032] If no interface is provided, the probe, sensor, or rotation / pivot joint can be at least partially replaceably housed within the sleeve in a best reproducible support manner.

[0033] If an interface is provided, it can be detachably and securely housed at least partially within the sleeve. A detachable and secure connection is a connection that can be separated without damage. It can be, for example, a threaded connection or a clamping connection.

[0034] It is also possible to detach and fix at least partially the probe, sensor, or rotation / pivot joint within the sleeve.

[0035] According to another advantageous embodiment, the interface is at least partially housed within the sleeve, and the probe or sensor or the adapter of the rotation / pivot joint is at least partially housed within the interface.

[0036] This implementation offers the advantage of significant space savings. Because the probe, sensor, or adapter for the rotating / pivoting joint is at least partially housed within the interface, which in turn is at least partially housed within the sleeve, the measuring volume of the coordinate measuring machine is significantly increased.

[0037] According to another advantageous embodiment of the invention, the probe, sensor, or rotating / pivoting joint adapter and / or interface is completely housed within the sleeve. The probe, sensor, or rotating / pivoting joint can preferably be reproducibly and interchangeably positioned at the interface.

[0038] According to another advantageous embodiment, the interface and probe, or the interface and sensor, or the interface and rotating / pivoting joint adapter can be completely housed within the sleeve.

[0039] This implementation method achieves the maximum increase in measurement space in the Z direction, i.e., in the direction of the sleeve's longitudinal axis.

[0040] Using the coordinate measuring instrument of the present invention, it is possible to at least partially embed the probe or sensor or the adapter or interface of the rotation / pivot joint within the sleeve.

[0041] According to a preferred embodiment of the invention, the interface is detachably and fixedly housed within the sleeve, and the probe or sensor or the adapter of the rotation / pivot joint can be reproducibly and replaceably housed at or within the interface.

[0042] The interface can be housed, for example, within or at least partially within the sleeve via a threaded connection. The threaded connection itself can be located inside the sleeve, at the point of contact with the sleeve, or outside the sleeve.

[0043] According to a particularly preferred embodiment of the invention, the interface is at least partially housed within the sleeve, and the probe or sensor or the adapter of the rotation / pivot joint located at the interface is at least partially housed within the interface and therefore also at least partially housed within the sleeve.

[0044] Another embodiment is that the interface is only partially housed within the sleeve, or the probe or sensor or the adapter of the rotating / pivoting joint is only partially housed within the sleeve.

[0045] If an interface is provided on which a probe, sensor, or rotating / pivoting joint is also mounted, it is possible to house the interface entirely within the sleeve and to house the adapter portion of the probe, sensor, or rotating / pivoting joint located at the interface within the sleeve. It is also possible to house both the interface and the adapter portion of the probe, sensor, or rotating / pivoting joint located at the interface entirely within the sleeve.

[0046] According to another advantageous embodiment of the invention, the probe or sensor or rotation / pivot joint can be reproducibly and at least partially housed within the sleeve.

[0047] If no interface is provided, the probe or sensor or the adapter of the rotation / pivot joint can be reproducibly and replaceably fixed at least partially within the sleeve.

[0048] If an interface is provided, it can be at least partially housed within the sleeve.

[0049] According to an advantageous embodiment of the invention, a replaceable probe or sensor or rotation / pivot joint is reproducibly mounted on the interface, or a replaceable probe or sensor or rotation / pivot joint is reproducibly mounted on the sleeve.

[0050] This implementation allows for a space-saving arrangement of the probe, sensor, or rotating / pivoting joint adapter, thereby increasing the measurement space of the coordinate measuring machine and enabling high-precision replacement of the probe, sensor, or rotating / pivoting joint.

[0051] According to one embodiment of the invention, the support is arranged to be reproducibly mounted on the end of the interface or sleeve on the probe side, sensor side, or rotation / pivot joint side. This means that the support can be readily and conveniently positioned at the end of the sleeve.

[0052] According to another embodiment of the invention, the support for the reproducible support is disposed on the probe side or sensor side or rotation / pivot joint side end of the interface or sleeve and is outside the interface or sleeve or inside the interface or sleeve.

[0053] The probe, sensor, rotation / pivot joint, or interface is mounted on the end of the sleeve on the probe side, sensor side, or rotation / pivot joint side. According to an advantageous embodiment of the invention, the three-point support is also provided on this end.

[0054] According to another advantageous embodiment of the invention, the support is disposed on the end of the interface or sleeve on the probe side, sensor side, or rotation / pivot joint side, and outside the sleeve. This ensures good accessibility of the support so that it can be easily cleaned, for example, when dirty.

[0055] The support can also be installed inside the sleeve at the end of the sleeve on the probe side, sensor side, or rotation / pivot joint side. This achieves maximum space saving.

[0056] According to a preferred embodiment, a fixing device for the interface is mounted outside the sleeve on the end of the probe or sensor or rotation / pivot joint away from the support. This fixing device may be constructed of screws or designed as a clamping device.

[0057] The fixing device for the interface, probe, sensor or rotation / pivot joint is advantageously positioned within the sleeve at the end of the probe, sensor or rotation / pivot joint away from the support.

[0058] The fixing device for the interface of the probe, sensor or rotating / pivoting joint is advantageously housed at least partially within a sleeve on the end of the probe, sensor or rotating / pivoting joint away from the support.

[0059] According to a particularly preferred embodiment of the invention, the support is designed as a three-point support. A replaceable probe or sensor or rotation / pivot joint is advantageously and reproducibly mounted on the interface by means of the three-point support, or a replaceable probe or sensor or rotation / pivot joint is advantageously and reproducibly mounted on the sleeve by means of the three-point support.

[0060] It can also replace the three-point support base to set other reproducible support structures.

[0061] In the case of a reproducible support, there is one support and one mating support. The support and the mating support have cooperating elements to form a reproducible connection.

[0062] This ensures that micrometer-level precision is achieved.

[0063] A three-point support consists, for example, of three spheres or spherical segments, which engage with a V-support or plane support, a Trippellager support, and a V-support. Alternatively, two parallel columns can be used instead of a V-support. In a three-point support, the spheres or spherical segments are generally paired and supported at six points.

[0064] The highly accurate and reproducible support eliminates the need for recalibration after sensor replacement.

[0065] The support and fixing devices cooperate. Through the cooperation of the blocking force system and the precise positioning mechanism, a reproducible support is formed.

[0066] As already described, the support can be designed as a three-point support. Other implementations of the support are also possible.

[0067] According to another advantageous embodiment of the invention, a fixing device is provided for separably and reproducibly securing the probe or sensor or rotation / pivot joint within the sleeve at the end of the probe or sensor or rotation / pivot joint remote from the support.

[0068] As already described, the support is mounted on the end of the sleeve on the probe side, sensor side, or rotation / pivot joint side. A fixing device for the probe, sensor, or rotation / pivot joint is housed within the sleeve. This fixing device is positioned axially relative to the distal end of the sleeve on the probe side, sensor side, or rotation / pivot joint side. The same applies when an interface is provided. The fixing device for the interface of the probe, sensor, or rotation / pivot joint is at least partially housed within the sleeve, specifically, spaced apart from the support on the distal end of the sleeve on the probe side, sensor side, or rotation / pivot joint side when viewed axially. This fixing device is axially positioned away from the support within the sleeve such that the probe, sensor, or rotation / pivot joint is partially or completely housed within the sleeve.

[0069] The interface can be partially or completely housed within the sleeve. Alternatively, the probe, sensor, or adapter for the rotating / pivoting joint can be partially or completely housed within the interface.

[0070] The fixing device for the interface, probe, sensor, or rotation / pivot joint advantageously has a first and second sleeve for separable connection, wherein the second sleeve is connected to the interface, probe, sensor, or rotation / pivot joint. The first and second sleeves are designed such that they are separably connected to each other.

[0071] If an interface is provided, it is also possible that the first component is mounted on the interface, and the second component is mounted on the probe head or sensor or the adapter of the rotation / pivot joint. The first and second components are designed such that they can be detachably connected to each other to apply a holding force.

[0072] The fixing device for this interface can be designed as a hook in one advantageous embodiment. Alternatively, other fixing devices such as magnets or electromagnets may be used.

[0073] If a hook is provided, the probe, sensor, or rotating / pivoting joint adapter has a corresponding groove for the hook. The hook must be inserted into this groove to secure the probe, sensor, or rotating / pivoting joint. When the probe, sensor, or rotating / pivoting joint is released, the hook must be protruded.

[0074] According to an advantageous embodiment of the invention, the hook swings out laterally when opened. When the sensor, probe, or rotation / pivot joint is secured, the hook rotates from the lateral position to a position for insertion into a hook receiving groove on the adapter of the probe, sensor, or rotation / pivot joint.

[0075] The hook can be housed within a sleeve used for a probe head, sensor, or rotation / pivot joint. Alternatively, it can be housed within an interface used for a probe head, sensor, or rotation / pivot joint.

[0076] As already described, the interface may be designed with a clamping mechanism or a threaded connection mechanism, with the fixing mechanism housed within the sleeve. Other connection mechanisms are also possible.

[0077] According to another advantageous embodiment of the invention, at least one sensor is provided for monitoring the locking state of the fixing device. Especially when a hook is provided, the position (open / closed) of the hook is monitored by this at least one sensor. According to a particularly preferred embodiment of the invention, the at least one sensor is designed as a Hall effect sensor.

[0078] Advantageously, at least one sensor for monitoring the locking status of the fixing device can be housed within the sleeve or the interface. The locking status of the fixing device, including the probe head, sensor, or the interface or sleeve of the rotating / pivoting joint, is monitored.

[0079] According to another advantageous embodiment of the invention, an emergency unlocking mechanism for the interface is provided. When no interface is provided, an emergency unlocking mechanism may also be provided for the probe head, sensor, or rotation / pivot joint.

[0080] According to a preferred embodiment, a disassembly mechanism is advantageously provided. The interface and probe, or the interface and sensor, or the interface and rotating / pivoting joint, or the probe, sensor, or rotating / pivoting joint at least partially housed within the sleeve, can be released using this mechanism to disassemble the interface together with the probe, or the interface together with the sensor, or the interface together with the rotating / pivoting joint, or the probe, sensor, or rotating / pivoting joint. If, in the event of a malfunction, the fixing device of the interface, along with the inserted probe, sensor, or rotating / pivoting joint, cannot be released, then the interface must be removed from the sleeve as a unit containing the probe, sensor, or rotating / pivoting joint, or the probe, sensor, or rotating / pivoting joint must be removed to inspect and perhaps repair the fixing device.

[0081] For this purpose, a mechanism, for example, consisting of screws, is provided so that the interface, together with the probe or sensor, or together with the rotation / pivot joint, or the probe or sensor or rotation / pivot joint, together with the complete fixing device, can be removed from the sleeve.

[0082] Particularly preferably, the interface, together with the probe head, sensor, or rotation / pivot joint mounted on the interface, can be removed from the sleeve.

[0083] According to another advantageous embodiment of the invention, a grating is provided for identifying the probe or sensor or rotation / pivot joint after it has been fitted.

[0084] According to this embodiment, the fixing device, such as the locking of a hook, or after the correct insertion of a probe, sensor, or rotation / pivot joint, is triggered by a force generated by a magnet through a grating.

[0085] With the help of the fixing device of this interface, a force-transmitting fit connection can be achieved in the sleeve, wherein the form fit connection is formed by placing three points on the probe end of the sleeve.

[0086] According to another advantageous embodiment of the invention, at least one additional supply port for a probe head or sensor or a rotating / pivoting joint or interface is disposed within the plane of the support. The support can advantageously be designed as a three-point support. The plane of the support, preferably the three-point support, is advantageously arranged outside the sleeve. Electrical contacts and / or pneumatic ports and / or hydraulic ports and / or optical ports can also be disposed within the plane of the support, preferably the three-point support.

[0087] Another advantageous embodiment of the invention specifies that the optical interface is arranged axially towards the fixing device from the support plane. The support can advantageously be a three-point support. This means that the optical interface is advantageously housed within the sleeve. However, in principle, the optical interface can also be housed within the plane of the support, preferably a three-point support.

[0088] The support can be advantageously positioned outside the sleeve. Alternatively, the support can be positioned inside the sleeve.

[0089] Advantageously, the probe or sensor or rotation / pivot joint is designed to be automatically or manually replaceable into the interface.

[0090] Particularly preferred is the automatic replacement of the probe or sensor or the rotating / pivoting joint into the interface or on the sleeve.

[0091] However, it is also possible that the change of clothes was done manually.

[0092] Automatic mounting has the following advantages: the measurement process can be performed fully automatically, and the required probes, sensors, or rotation / pivot joints can be changed individually.

[0093] During manual garment changing, additional visual inspections can be advantageously performed by the operator.

[0094] According to another advantageous embodiment of the invention, a switch is provided for triggering the replacement in order to manually change the probe, sensor, or rotating / pivoting joint. This switch serves as a safety feature during manual replacement. It is a "confirmation switch" that triggers the manual replacement of the probe, sensor, or rotating / pivoting joint.

[0095] According to an advantageous embodiment of the invention, the fixing device of the interface preferably does not require energy during operation. For example, the fixing device can be designed as a hook that uses a compression spring to reliably hold the probe or sensor or rotation / pivot joint in place without requiring further energy supply or, for example, air during the measurement process.

[0096] Removing the probe, sensor, or rotating / pivoting joint from the interface is advantageously initiated via software commands. During manual replacement, as already described, it is advantageous to operate a switch. Energy is then supplied to the system, for example, by applying pressure to a compression spring, causing the hook to open and the sensor, probe, or rotating / pivoting joint to disengage from the interface.

[0097] According to another embodiment of the invention, the fixing device of the interface must receive energy during operation. This embodiment has the advantage that the fixing device can be released by shutting off the energy supply.

[0098] According to another advantageous embodiment of the invention, at least one centering pin is provided on the sleeve, on the interface, on the probe head, or on the sensor or rotation / pivot joint. Preferably, at least two centering pins are provided.

[0099] The probe, sensor, or rotation / pivot joint can be pre-positioned when inserted into the interface or mounted on the sleeve using a centering pin.

[0100] If an asymmetrically arranged centering pin is used, the probe, sensor, or rotation / pivot joint will not be able to rotate within the interface, meaning it will be incorrectly installed.

[0101] As already described, the fixing device for the probe head or sensor or the rotating / pivoting joint is housed within the interface or within the sleeve, i.e., spaced apart from the probe head end of the sleeve when viewed axially. In principle, it is also feasible to provide an interface within this plane for, for example, air, electronic, hydraulic, or optical connection mechanisms.

[0102] The probe-side end of the sleeve refers to the end in which the probe or sensor or rotation / pivot joint or interface is at least partially housed.

[0103] When the sensor, probe, or rotating / pivoting joint adapter is inserted into the interface or sleeve, the final position of the sensor, probe, or rotating / pivoting joint adapter is automatically identified, thereby enabling the probe, sensor, or rotating / pivoting joint to be secured within the interface or sleeve.

[0104] As already explained, the probe can be designed as a tactile probe. It can also be configured as a measurement-type probe.

[0105] Sensors can be, for example, optical point sensors, cameras for image processing, roughness sensors, triangulation sensors, or Barkhausen sensors.

[0106] The probe or sensor can be replaced depending on the requirements of the measurement task. A rotation / pivot joint can also be installed.

[0107] If an automatic change occurs in the probe, sensor, or rotating / pivoting joint, the measurement accuracy is reduced and the measurement time is shortened during hybrid measurements (optical / tactile).

[0108] According to another advantageous embodiment of the invention, an optical status display mechanism is provided at least in segments on the interface, on the probe head, on the sensor, or on the rotation / pivot joint.

[0109] The optical status display mechanism is advantageously designed as a lamp, a light guiding mechanism, and / or a light-emitting ring. According to a preferred embodiment, the optical status display mechanism has at least one LED.

[0110] Advantageously, the optical status display mechanism is mounted on the interface, probe or sensor or rotation / pivot joint at a point away from the fixed end.

[0111] An optical status display mechanism can be used to display, for example, the complete and orderly placement of the probe or sensor or the adapter of the rotation / pivot joint at the interface or within the sleeve, or the functional capability or measurement status / progress of the interface, probe or sensor or rotation / pivot joint.

[0112] According to another advantageous embodiment of the invention, a protective device for the probe head or sensor or rotation / pivot joint is provided within and / or above the interface.

[0113] According to another advantageous embodiment of the invention, a protective device for the interface, probe, sensor, or rotation / pivot joint is provided inside and / or above the sleeve.

[0114] The protective device is designed to protect, during replacement, an interface at least partially housed within the sleeve, a probe at least partially housed within the sleeve, a sensor at least partially housed within the sleeve, or a rotating / pivoting joint at least partially housed within the sleeve from damage caused by collision with the inner surface of the sleeve.

[0115] Particularly advantageously, a protective device is provided within and / or at the interface to protect the replaceable probe, replaceable sensor, or replaceable rotating / pivoting joint from damage caused by collision with the inner surface of the interface.

[0116] The protective device is advantageously constructed of a material with low surface roughness. Therefore, in the event of contact, the probe, sensor, or rotating / pivoting joint can slide along the protective device without damage.

[0117] The protective device is advantageously made of plastic. Plastic has a low surface roughness. Plastic has a lower hardness than metal, so the housing of the probe, sensor, or interface, which is usually made of metal, will not be damaged when it comes into contact with the protective device.

[0118] The interface is advantageously designed as a universal probe interface, sensor interface, or rotary / pivot joint interface, which consists of mechanical, electronic, optical, pneumatic, and / or hydraulic connection mechanisms between the interface and the probe, or between the interface and the sensor, or between the interface and the rotary / pivot joint. Attached Figure Description

[0119] Other features and advantages of the invention can be seen by referring to the accompanying drawings, which are merely illustrative examples of various embodiments of the coordinate measuring instrument of the invention, but the invention is not limited to the described embodiments. The drawings show:

[0120] Figure 1 A perspective view shows a coordinate measuring instrument in a portal frame configuration;

[0121] Figure 2 A sleeve with an interface, probe head, and stylus seat is shown in a partial longitudinal section.

[0122] Figure 3 A perspective view showing the sensor / probe / rotation / pivot joint positioned within the sleeve, but without the sleeve housing;

[0123] Figure 4 Showing a hook and centering pin Figure 3 A partial view;

[0124] Figure 5 Show Figure 3 Another partial view;

[0125] Figure 6 The three-point support is shown in the longitudinal section diagram;

[0126] Figure 7 The three-point support is shown in a top view;

[0127] Figure 8 Shown in top view Figure 7 Three-point support fittings;

[0128] Figure 9 A device with a centering pin is shown in longitudinal section.

[0129] Figure 10 A longitudinal cross-sectional view of a sleeve having an interface, a probe head, and a stylus reservoir is shown.

[0130] Figure 11 An embodiment of a sleeve with an interface, probe head, and stylus receptacle is shown in longitudinal cross-section.

[0131] Figure 12 An embodiment of a sleeve with a probe head and stylus groove is shown in longitudinal section.

[0132] Figure 13 An embodiment of a sleeve with a rotating / pivoting joint and a probe head is shown in longitudinal section; and

[0133] Figure 14 An embodiment of a sleeve with a rotation / pivot joint, probe head, and stylus receptacle is shown in longitudinal cross-section.

[0134] List of reference numerals

[0135] 1 Coordinate Measuring Instrument

[0136] 2 tool benches

[0137] 3 gantry

[0138] 4 crossbeams

[0139] 5 carriages

[0140] 6 sleeves

[0141] 7 probes

[0142] 8 styluses

[0143] 9 workpieces

[0144] 10 scale

[0145] 11 scale

[0146] 12 scale

[0147] 13 gantry legs

[0148] 14 gantry legs

[0149] 15 Computers

[0150] 16 hooks

[0151] 17 Three-point support

[0152] 18 stylus bases

[0153] 19 contact elements

[0154] 20 Three-point support

[0155] 21. Probe holding device

[0156] 22 clamping units

[0157] 23 sensors

[0158] 24 compression springs

[0159] 25 sensors

[0160] 26 fixed-line sales

[0161] 27 fixed sales

[0162] 28 screws

[0163] 29 Compressed air port

[0164] 30 Compressed Air Port

[0165] 31 electrical ports

[0166] 32 Air port for external sensors

[0167] 33 optical ports

[0168] 34 Confirmation Switch

[0169] 35 Three-point supported plane

[0170] 36 ball segments

[0171] 37 support

[0172] 38 columnar bodies

[0173] 39-slot

[0174] 40 fixed center pin trough

[0175] 41. Center pin groove

[0176] 42 interface

[0177] 43 Three-point support

[0178] 44 Three-point support

[0179] 45 probe side end

[0180] 46 Holding device

[0181] 47. Light guiding mechanism (LED)

[0182] 49 Protective Devices

[0183] 50 covers

[0184] 51 internal interface

[0185] 52 Rotation / Pivot Joints

[0186] 53. Adaptor for rotating / pivoting joints Detailed Implementation

[0187] Figure 1 A coordinate measuring machine 1 is shown in a portal frame configuration, comprising a worktable 2 and a gantry 3. The gantry 3 has a crossbeam 4. A carriage 5 is mounted on the crossbeam 4, and a sleeve 6 is mounted on the carriage. The gantry 3 is movable in the X direction, the carriage 5 is movable in the Y direction, and the sleeve 6 is movable in the Z direction. A probe head 7, carrying a stylus 8, is mounted on the sleeve 6. A workpiece 9 is placed on the measuring table 2 of the coordinate measuring machine.

[0188] A scale 10 is set on the measuring table 2, a scale 11 is set on the crossbeam 4, and a scale 12 is set on the sleeve 6. The position of the stylus 8 can be measured by a corresponding displacement measuring system (not shown). The gantry 3 has gantry legs 13 and 14, by which the gantry 3 is movably mounted on the measuring table 2. The measured value is acquired and processed by a computer 15, which also includes a control unit.

[0189] In principle, it is also possible that the gantry 3 is fixed in place while the worktable moves relative to the gantry with the workpiece.

[0190] We also learned, for example, how to place the turntable on tool table 2.

[0191] Figure 2 The sleeve 6 is shown schematically. An interface 42 and a probe head 7 are housed within the sleeve 6. The probe head 7 is secured within the sleeve 6 by means of a hook 16 that is pivotable in the Y direction and movable in the Z direction, supported by a three-point support 17. A stylus holder 18 is provided on the probe head 7, which carries a stylus 8 with a contact element 19. The stylus holder 18 is also detachably mounted on the probe head 7 by means of a three-point support 20. A retaining mechanism for the stylus holder 18 is provided... Figure 2 It is not shown in the text.

[0192] exist Figure 2 Only one interface 42 is schematically shown. Interface 42 has a retaining device 46 for hook 16. A three-point support 17 is also provided on interface 42.

[0193] Interface 42 is housed within sleeve 6. Interface 42 is secured to sleeve 6 by screw 28. Interface 42 can be removed from sleeve 6 by loosening screw 28.

[0194] To ensure that the probe 7 will not be damaged during replacement if it comes into contact with the inner wall of the interface 42, a protective device 49 is provided. The protective device 49 is, for example, made of plastic. The protective device 49... Figure 2 The sleeve 6 is designed to be flat. In this embodiment, the protective device 49 is mounted as a segment on the inner surface 51 of the interface 42. The protective device 49 may also have a larger diameter than the sleeve 6 along its longitudinal axis. Figure 2 The larger axial extension dimension is shown. It can be designed in sections with at least one segment or in a continuous configuration.

[0195] Figure 3 The probe holding device 21 is shown, which is mounted on the sleeve 8 (in Figure 3 (Not shown in the image). The probe holding device 21 has a clamping unit 22. The clamping unit 22 has a hook 16 (in...). Figure 2 (As shown in the image). Sensor 23 can detect whether the probe 7 has moved into the probe holding device 21. Sensor 23 can be designed as a grating. If sensor 23 is triggered, hook 16 is activated by means of compression spring 24 (e.g., ...). Figure 2 (As shown) is compressed upwards in the Z-axis direction. A compression spring 24 ensures that no external energy is supplied while the probe head 7 is fixed within the sleeve 6 and maintains the fixation of the probe head 7. To release the probe head 7, compressed air is introduced into the system, causing the hook 16 to move in the negative Z-direction towards the three-point support 17, and subsequently rotate to... Figure 2 The position indicated by the dashed line allows the probe 7 to be replaced.

[0196] according to Figure 3Other sensors 25 are configured to identify the piston position.

[0197] A device 23 is also provided, which identifies whether a probe head 7 or a sensor is installed. Device 23 may be designed as a grating.

[0198] The probe head 7 has a light guiding mechanism 47. The light guiding mechanism 47 is in the form of a light-emitting strip composed of LEDs.

[0199] In addition, the probe 7 has a cover 50. A mechanical connection (e.g., a clamping mechanism or a threaded connection mechanism) (not shown) is provided beneath each cover 50. By releasing this mechanism, the entire probe... Figure 3 The probe holding device 21 shown can be removed from the sleeve 6 along with the probe, sensor, or adapter of the rotation / pivot joint. If hook 16 (in Figure 3 If the probe head 7 or the sensor or the adapter of the rotation / pivot joint (not shown) fails to release due to a malfunction, it is an emergency unlocking mechanism in this case.

[0200] Figure 4 The upper part of the probe holding device 21 is shown. Figure 4 Hook 16 is shown. In addition, there are multiple centering pins 26 and 27 and a sensor 23, which identifies whether a probe head 7 is placed in the probe head holding device 21.

[0201] Additionally, two compressed air ports 29 and 30 are provided. Compressed air port 30 is configured to release hook 16.

[0202] In addition, electrical port 31 is provided for powering the sensor and transmitting data from the probe, sensor or interface, etc.

[0203] Figure 5 The lower portion of the probe holding device 21 is shown. The lower portion has an air port 32 for an external sensor. It also includes an optical port 33 and a so-called confirmation switch 34. The probe holding device 21 has a plane 35 with three-point support. The optical port 33 is axially movable in the Z direction relative to the plane 35 with three-point support towards a fixing device with a hook 16.

[0204] exist Figure 3 , Figure 4 and Figure 5 The housing of sleeve 6 is not shown. However, housing 6 extends to the plane 35 of the three-point support.

[0205] Plane 35 with three-point support Figure 6The details are shown in the diagram. The three-point support consists of three balls or ball segments 36. In addition, the centering pins 26 and 27 are provided, which on the one hand pre-center the probe 7 during installation, and on the other hand prevent the probe 7 from being mistakenly, i.e., twistedly, installed in the case of the asymmetrical design of the centering pins 26 and 27.

[0206] Figure 7 The three-point support is shown in a top view. Figure 7 A sleeve 6 with three supports 37 is shown. Each support 37 has two cylindrical bodies 38. A hook 16 is also provided.

[0207] Figure 8 The probe head 7 is shown, in which a hemisphere 36 is mounted. The hemisphere 36 contacts the cylinder 38 at six points when the probe head 7 is mounted on the sleeve 6. This provides reproducible, highly accurate support. The probe head 7 has a groove 39 for receiving the hook 16.

[0208] Figure 9 The lower portion of the probe holding device 21 with centering pins 26 and 27 is shown. The centering pins are inserted into the receiving slots 40 and 41 of the probe 7. The centering pins 26 and 27 are designed to be of different lengths. Therefore, the centering pin 27 can only be inserted into the receiving slot 41. Therefore, it is not possible to rotate the probe 7 180°.

[0209] exist Figures 1 to 9 The invention shown includes an interface 42 housed within a sleeve 6 and a probe 7. Interface 42 is based on... Figure 10 It is detachably and securely mounted on the sleeve. For detachable and secure connection, for example, screw 28 can be provided (in...). Figure 10 (Not shown in the image). According to Figure 10 The probe head 7 can be repositioned and replaced on the interface 42. For this purpose, the interface 42 has a three-point support 43. The probe head 7 also has a three-point support 44 for the stylus seat 18, which carries the sleeve 8 and the contact element 19.

[0210] Instead of probe 7, a sensor (not shown) can also be used. In this case, it can be, for example, an optical sensor, an optical probe, or a roughness sensor.

[0211] The three-point supported plane 35 is arranged on the probe end 45 of the sleeve 6. Figure 5 ).

[0212] Figure 11 Showing according to Figure 10 Variations of the embodiments are described. Identical components are labeled with the same reference numerals.

[0213] Interface 42 according to Figure 11 It is arranged inside the sleeve 6. The probe head 7 and the stylus seat 18 are arranged outside the sleeve 6.

[0214] Figure 12 Another embodiment is shown. According to... Figure 12 There is only one probe 7 installed inside the sleeve 6.

[0215] The probe head 7 has a three-point support 44 for the probe holder 18. A probe 8 with a contact element 19 is mounted on the probe holder 18. According to... Figure 12 No interface is provided.

[0216] Figure 13 The sleeve 6 is shown together with the interface 42 housed within the sleeve 6. An adapter 53 for a rotating / pivoting joint 52 is housed within the interface 42. Replacing the probe 7, as... Figure 2 As shown, an adapter 53 for a rotating / pivoting joint 52 is disposed in interface 42. A probe 7 is disposed on the rotating / pivoting joint 52, on which a probe 8 with a contact ball 19 is replaceably disposed. The probe 8 can be rotated to the position shown by the dashed line.

[0217] The adapter 53 of the rotating / pivoting joint 52 is reproducibly housed within the interface 42 by means of the hook 16 and the three-point support 17. The protective device 49 protects the adapter 53 from damage during replacement.

[0218] Interface 42 is housed within sleeve 6. Interface 42 is secured to sleeve 6 by screw 28. Interface 42 can be removed from sleeve 6 by loosening screw 28.

[0219] Figure 14 The sleeve 6 is shown, with the interface 42 located within it. A rotating / pivoting joint 52 is mounted on the sleeve 6. A probe head 7, which carries a stylus seat 18, is mounted on the rotating / pivoting joint 52. A stylus 8 with a contact ball 19 is mounted on the stylus seat 18. Three-point supports 44 are provided between the interface 42, the rotating / pivoting joint 52, the probe head 7, and the stylus seat 18.

[0220] Interface 42 uses screw 28 (not shown) as follows Figure 2 The interface 42 is mounted on the sleeve 6 as shown. By loosening the screw 28, the interface 42 can be removed from the sleeve 6.

Claims

1. A coordinate measuring instrument, the coordinate measuring instrument having a sleeve and - Probe head, or - Sensor, or - Rotation / pivot joint, or - A rotating / pivoting joint with a probe or sensor mounted on the rotating / pivoting joint, and - Interface, characterized in that The adapter (53) of the rotation / pivot joint (52), or the probe (7), or the sensor and / or the interface (42) are at least partially housed within the sleeve (6). Furthermore, the supports (17, 43, 44) are arranged to reproducibly mount a replaceable probe (7) or sensor or the rotation / pivot joint (52) on the probe side, sensor side, or rotation / pivot joint side end of the interface (42). Furthermore, the fixing device for detachably mounting the probe (7) or the sensor or the rotation / pivot joint (52) within the sleeve (6) is arranged at the end of the probe (7) or the sensor or the rotation / pivot joint (52) away from the support. The fixing device for the probe, sensor, or rotating / pivoting joint is disposed within the interface or within the sleeve, that is, spaced apart from the probe end of the sleeve when viewed axially in the sleeve.

2. The coordinate measuring machine of claim 1, wherein, The interface (42) is at least partially housed within the sleeve (6), and the adapter (53) of the rotation / pivot joint (52), the probe (7), or the sensor is at least partially housed within the interface (42).

3. Coordinate measuring apparatus according to claim 1 or 2, characterized in that The adapter (53) of the rotating / pivoting joint (52), or the probe (7), or the sensor and / or the interface (42) is completely housed within the sleeve (6).

4. The coordinate measuring machine of claim 1, wherein, The interface (42) is detachably fixed inside the sleeve (6), and the adapter (53) of the rotation / pivot joint (52), the probe (7), or the sensor is replaceably mounted on or in the interface (42).

5. The coordinate measuring machine of claim 1, 2 or 4, wherein, The adapter (53) of the rotating / pivoting joint (52), or the probe (7), or the sensor is at least partially housed within the sleeve (6) in a replaceable manner.

6. The coordinate measuring machine of claim 1, wherein, The replaceable probe (7) or the sensor or the rotation / pivot joint (52) is reproducibly mounted on the interface (42), or the replaceable probe (7) or the sensor or the rotation / pivot joint (52) is reproducibly mounted on the sleeve (6).

7. The coordinate measuring machine of claim 6, wherein, Supports (17, 43, 44) are arranged to be mounted in a reproducible manner on the probe side, sensor side, or rotation / pivot joint side of the interface (42) or the sleeve (6).

8. The coordinate measuring instrument according to claim 7, characterized in that, The supports (17, 43, 44) are mounted on the probe side, sensor side, or rotation / pivot joint side end (45) of the interface (42) or the sleeve (6) and are located outside the interface (42) or outside the sleeve (6) or inside the interface (42) or inside the sleeve (6).

9. The coordinate measuring instrument according to claim 7 or 8, characterized in that, The supports (17, 43, 44) are designed as three-point supports (17, 43, 44).

10. The coordinate measuring instrument according to claim 1, characterized in that, The fixing device is designed as a hook (16).

11. The coordinate measuring instrument according to claim 1 or 10, characterized in that, At least one sensor (25) is used to monitor the locking status of the fixing device.

12. The coordinate measuring instrument according to claim 1, characterized in that, An emergency unlocking mechanism is provided for the interface (42), the probe (7), the sensor, or the rotation / pivot joint (52).

13. The coordinate measuring instrument according to claim 1, characterized in that, A grating (23) is provided for detecting the final position of the probe (7), sensor, or rotation / pivot joint (52) after the probe (7), sensor, or rotation / pivot joint (52) has been replaced.

14. The coordinate measuring instrument according to claim 1, characterized in that, At least one additional supply port (32) for the probe or the sensor or the rotation / pivot joint (52) or the interface is provided in the plane (35) of the support.

15. The coordinate measuring instrument according to claim 1, characterized in that, The optical interface (33) is arranged to move along the axial direction of the sleeve (6) toward the fixing device (16) from the three-point supported plane (35).

16. The coordinate measuring instrument according to claim 1, characterized in that, For manual replacement of the probe (7), the sensor, or the rotation / pivot joint (52), a switch (34) is provided to trigger the replacement process.

17. The coordinate measuring instrument according to claim 1, characterized in that, At least one centering pin (26, 27) is provided on the sleeve (6), or on the interface (42), or on the probe (7), or on the sensor, or on the rotation / pivot joint (52), preferably at least two centering pins (26, 27).

18. The coordinate measuring instrument according to claim 1, characterized in that, An optical status display mechanism (47) is provided on the interface (42), on the probe (7), on the sensor, or on the rotation / pivot joint (52).

19. The coordinate measuring instrument according to claim 1, characterized in that, A protective device (49) is provided in the sleeve (6) and / or on the sleeve (6) for the interface (42) or the probe (7) or the sensor or the rotation / pivot joint (52), or a protective device (49) is provided in the interface (42) and / or on the interface (42) for the probe (7) or the sensor or the rotation / pivot joint (52).

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