Anti-collision contourgraph measuring rod

Abstract

The utility model discloses an anti-collision contourgraph measuring rod, which relates to the field of contourgraphs, and adopts the technical scheme that the anti-collision contourgraph measuring rod comprises a sliding table seat and a fixed seat, a first contact surface is arranged on the side part of the sliding table seat, a second contact surface is arranged on the side part of the fixed seat, and the first contact surface is in contact fit with the second contact surface; the first contact surface and the second contact surface are respectively provided with magnets which attract each other and positioning structures which are matched with each other; the first contact surface is provided with a first contact probe and a second contact probe which are electrically connected with each other; the second contact surface is provided with a third contact probe corresponding to the first contact probe, the second contact surface is provided with a fourth contact probe corresponding to the second contact probe, and the third contact probe and the fourth contact probe are electrically connected to the main controller. When a needle is collided, the relative position of the sliding table seat and the fixed seat can be automatically released, the third contact probe and the fourth contact probe are disconnected, the operation of the measuring probe, including a measuring rod and an object, is stopped, and the safety is higher.

Description

Technical Field

[0001] The utility model relates to the field of profilometers, in particular to an anti-collision profilometer measuring rod. Background Art

[0002] A profilometer is an instrument used to test and inspect an object's contour, two-dimensional dimensions, and two-dimensional displacement. As a precision measuring instrument, it is widely used in the automotive and railway industries. A key component of a profilometer is the stylus. For example, the stylus structure of a gyroscope-based profilometer is disclosed in patent publication number CN117405064B. Currently, the stylus of such profilometers is rigidly fixed. During contact measurement, collision with an object can damage the object and the stylus. Utility Model Content

[0003] In order to solve the above technical problems, the utility model provides a collision-proof contour meter measuring rod, which can automatically release the relative position of the slide seat and the fixed seat when a needle collision occurs, and disconnect the third contact probe and the fourth contact probe, stopping the operation of the measuring needle, including the measuring rod and the object, which is safer.

[0004] The technical solution adopted by the utility model to solve the technical problem is: an anti-collision profilometer measuring rod, comprising a sliding seat and a fixed seat;

[0005] The side of the slide seat is provided with a first contact surface, and the side of the fixed seat is provided with a second contact surface, and the first contact surface and the second contact surface are in contact and fit;

[0006] The first contact surface and the second contact surface are respectively provided with mutually attractive magnets and mutually adapted positioning structures;

[0007] The first contact surface is provided with a first contact probe and a second contact probe electrically connected to each other;

[0008] The second contact surface is provided with a third contact probe corresponding to the first contact probe, and the second contact surface is provided with a fourth contact probe corresponding to the second contact probe. The third contact probe and the fourth contact probe are electrically connected to the main controller respectively.

[0009] In this solution, the sliding seat and the fixed seat utilize a first contact surface and a second contact surface to achieve contact between them, and a positioning structure is used to determine their relative position. After the positioning structure is engaged, the only degree of freedom is limited by magnetic attraction. When the first contact surface and the second contact surface are closed, the first contact probe and the third contact probe are in contact and communication, and the second contact probe and the fourth contact probe are in contact and communication. Since the first contact probe and the second contact probe are electrically connected, the third contact probe and the fourth contact probe can be connected. The third contact probe and the fourth contact probe are each electrically connected to the main controller. Therefore, when the third contact probe and the fourth contact probe are in contact, a connection signal can be sent to the main controller.

[0010] Since the magnetic force of the magnet is limited, if the slide is subjected to a force exceeding the limit force provided by the magnet, the first contact surface and the second contact surface will separate, and the main controller will receive a disconnect signal, thereby stopping the movement of the side rod and avoiding further striker.

[0011] Preferably, the positioning structure includes a positioning groove and a positioning protrusion that adapt to each other, wherein the positioning protrusion is provided on one of the first contact surface and the second contact surface, and the positioning groove is provided on the other surface. The positioning groove and the positioning protrusion can well realize the relative position determination of the first contact surface and the second contact surface.

[0012] Preferably, the positioning structure includes several groups, so as to determine the relative position of the first contact surface and the second contact surface at an angle.

[0013] Preferably, each group of the positioning structures is distributed around the periphery of the magnet, so as to more evenly determine the relative position of the first contact surface and the second contact surface.

[0014] Preferably, the positioning protrusion is a curved protrusion, so that the positioning protrusion can be separated from the positioning groove when a collision occurs and the force exceeds the rated limit.

[0015] Preferably, the positioning protrusion is a round ball that is clamped on the first contact surface or the second contact surface, which makes it easier to process the positioning protrusion and more durable.

[0016] Preferably, the positioning groove is an arc-surface groove, which makes it easier to separate the positioning protrusion from the positioning groove.

[0017] Preferably, one of the first and second contact surfaces is provided with a strip guide groove, the strip guide groove being arranged axially along the side rod, and the other surface is provided with a guide pin extending into the strip guide groove. This ensures that when subjected to an external force exceeding the rated force, even though the positioning protrusion and the positioning groove separate, the strip guide groove and the guide pin can still provide a certain degree of guidance, thereby preventing the first and second contact surfaces from completely separating.

[0018] Preferably, the strip-shaped guide grooves and the guide pins include at least two groups, which can better play a guiding role.

[0019] Beneficial effects of the utility model:

[0020] This solution can automatically release the relative position of the slide seat and the fixed seat when a needle strike occurs, and disconnect the third contact probe and the fourth contact probe, stopping the operation of the probe, including the measuring rod and the object, which is safer. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only three of the drawings of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0022] Figure 1 A perspective view of an embodiment of the present utility model;

[0023] Figure 2 This is an axial cross-sectional view of an embodiment of the present utility model;

[0024] Figure 3 A schematic diagram of a fixing base according to an embodiment of the present invention;

[0025] Among them, 1. fixed seat; 2. sliding seat; 3. first contact probe; 4. second contact probe; 5. third contact probe; 6. fourth contact probe; 7. positioning groove; 8. positioning protrusion; 9. magnet; 10. strip guide groove; 11. guide pin. DETAILED DESCRIPTION

[0026] In order to deepen the understanding of the present invention, the present invention will be described in further detail below with reference to the accompanying drawings and embodiments. The embodiments are only used to explain the present invention and do not limit the scope of protection of the present invention.

[0027] Example

[0028] like Figure 1As shown, a collision-proof contour meter measuring rod includes a sliding seat 2 and a fixed seat 1; the side of the sliding seat 2 is provided with a first contact surface, and the side of the fixed seat 1 is provided with a second contact surface, and the first contact surface and the second contact surface are in contact and matched; the first contact surface and the second contact surface are respectively provided with mutually attractive magnets 9 and mutually adaptive positioning structures; the first contact surface is provided with a first contact probe 3 and a second contact probe 4 electrically connected to each other; the second contact surface is provided with a third contact probe 5 corresponding to the first contact probe 3, and the second contact surface is provided with a fourth contact probe 6 corresponding to the second contact probe 4, and the third contact probe 5 and the fourth contact probe 6 are respectively electrically connected to the main controller.

[0029] In this solution, the sliding seat 2 and the fixed seat 1 utilize the first contact surface and the second contact surface to achieve contact between the two, and the relative position between the two is determined by the positioning structure. After the positioning structure cooperates, the only degree of freedom is limited by attraction by the magnet 9. When the first contact surface and the second contact surface are closed, the first contact probe 3 and the third contact probe 5 are in contact and communication, and the second contact probe 4 and the fourth contact probe 6 are in contact and communication. Since the first contact probe 3 and the second contact probe 4 are electrically connected, the third contact probe 5 and the fourth contact probe 6 can be connected. The third contact probe 5 and the fourth contact probe 6 are respectively electrically connected to the main controller. Therefore, when the third contact probe 5 and the fourth contact probe 6 are in contact, a connection signal can be given to the main controller.

[0030] Since the magnetic force of the magnet 9 is limited, if the slide seat 2 is subjected to a force exceeding the limiting force provided by the magnet 9, the first contact surface and the second contact surface will separate, and the main controller will receive a disconnection signal, thereby stopping the movement of the side rod and avoiding further striker.

[0031] The positioning structure includes a mutually adapted positioning groove 7 and a positioning protrusion 8. One of the first contact surface and the second contact surface is provided with the positioning protrusion 8, and the other surface is provided with the positioning groove 7. The positioning groove 7 and the positioning protrusion 8 can effectively determine the relative position of the first contact surface and the second contact surface.

[0032] The positioning structure includes several groups, so as to determine the relative position of the first contact surface and the second contact surface at an angle.

[0033] Each group of positioning structures is distributed around the periphery of the magnet 9, so as to more evenly determine the relative position of the first contact surface and the second contact surface.

[0034] The positioning protrusion 8 is a curved protrusion. This facilitates separation of the positioning protrusion 8 from the positioning groove 7 when a collision occurs and the force exceeds the rated limit. The positioning protrusion 8 is a round ball that is clamped onto the first contact surface or the second contact surface. This makes the positioning protrusion 8 easier to process and more durable.

[0035] The positioning groove 7 is a curved groove, which makes it easier to separate the positioning protrusion 8 from the positioning groove 7. The positioning structure includes three groups, wherein the round balls are three 2mm steel balls.

[0036] One of the first and second contact surfaces is provided with a strip guide groove 10, which is arranged along the axial direction of the side rod, and the other surface is provided with a guide pin 11 extending into the strip guide groove 10. When subjected to an external force exceeding the rated force, although the positioning protrusion 8 separates from the positioning groove 7, the strip guide groove 10 and the guide pin 11 can still provide a certain degree of guidance, thereby preventing the first and second contact surfaces from completely separating.

[0037] The strip-shaped guide grooves 10 and the guide pins 11 include at least two groups, which can better play a guiding role.

[0038] Beneficial effects of the utility model:

[0039] This solution can automatically release the relative position of the slide seat 2 and the fixed seat 1 when a needle strike occurs, and disconnect the third contact probe 5 and the fourth contact probe 6 to stop the operation of the probe.

[0040] The first contact probe 3 and the second contact probe 4 are male probes, and the third contact probe 5 and the fourth contact probe 6 are female probes.

[0041] The probe's anti-collision slide and fixed base 1 are both made of brass. A positioning mechanism ensures the anti-collision probe resets to the same position every time. The magnetic force of magnet 9 provides the securing force. Two 1x3 guide pins 11 guide the slide 2 forward when the anti-collision function is triggered. When a force of approximately 25N is applied to the front of the slide 2, the slide 2 will deflect backward. When an upward force is applied, the slide 2 and fixed base 1 will separate.

[0042] The female and male probe heads that were originally in contact to form a closed circuit will be offset back and forth or separated up and down to form an open circuit, sending a signal to the main controller to stop movement and issue an alarm.

[0043] When the probe is working normally during testing, the axial shear force on the mechanism is much smaller than the adsorption force of the magnet 9, and almost no displacement occurs during the test, which can meet the accuracy requirements of the test contour.

[0044] In the event of a collision, the shear force on the connection becomes greater than the attraction of magnet 9, causing the probe to move backward and disconnect the wiring on the mechanism. When the controller detects a disconnection of the IO port input, the control software executes the collision exception handling routine, disabling all motor movement operations in the software and issuing a prompt.

[0045] After clicking the Confirm button in the collision prompt window, the software temporarily restores motor movement. Only movement in the opposite direction of the collision is permitted to prevent secondary collision damage to the stylus. Once the stylus has cleared the collision location, the probe will reconnect the previously uncoupled circuits to normal operation. The controller's IO ports are reconnected, and the controller returns to normal operation.

[0046] The technical features of the above embodiments can be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0047] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that a person skilled in the art could make various modifications and improvements without departing from the spirit of the present application, all of which fall within the scope of protection of the present application. Therefore, the scope of protection of the present patent application shall be determined by the appended claims.

Claims

1. A collision-proof profilometer measuring rod, characterized in that: It comprises a sliding seat (2) and a fixed seat (1); The side of the slide seat (2) is provided with a first contact surface, and the side of the fixed seat (1) is provided with a second contact surface, and the first contact surface and the second contact surface are in contact and fit; The first contact surface and the second contact surface are respectively provided with mutually attracting magnets (9) and mutually adapted positioning structures; The first contact surface is provided with a first contact probe (3) and a second contact probe (4) electrically connected to each other; The second contact surface is provided with a third contact probe (5) corresponding to the first contact probe (3), and the second contact surface is provided with a fourth contact probe (6) corresponding to the second contact probe (4). The third contact probe (5) and the fourth contact probe (6) are respectively electrically connected to the main controller.

2. The anti-collision profilometer measuring rod according to claim 1, characterized in that: The positioning structure comprises a positioning groove (7) and a positioning protrusion (8) adapted to each other; the positioning protrusion (8) is provided on one of the first contact surface and the second contact surface, and the positioning groove (7) is correspondingly provided on the other surface.

3. The anti-collision profilometer measuring rod according to claim 2, characterized in that: The positioning structure includes several groups.

4. The anti-collision profilometer measuring rod according to claim 3, characterized in that: Each group of the positioning structures is distributed around the periphery of the magnet (9).

5. The anti-collision profilometer measuring rod according to claim 2, characterized in that: The positioning protrusion (8) is a cambered protrusion.

6. The anti-collision profilometer measuring rod according to claim 5, characterized in that: The positioning protrusion (8) is a round ball clamped on the first contact surface or the second contact surface.

7. The anti-collision profilometer measuring rod according to claim 5, characterized in that: The positioning groove (7) is a cambered groove.

8. The anti-collision profilometer measuring rod according to claim 1, characterized in that: One of the first contact surface and the second contact surface is provided with a strip guide groove (10), the strip guide groove (10) being arranged along the axial direction of the side rod, and the other surface is provided with a guide pin (11) extending into the strip guide groove (10).

9. The anti-collision profilometer measuring rod according to claim 8, characterized in that: The strip-shaped guide grooves (10) and the guide pins (11) include at least two groups.

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