Workpiece size measuring device and workpiece processing equipment

Abstract

The utility model relates to the field of workpiece processing, and provides a workpiece dimension measuring device and workpiece processing equipment, and the workpiece dimension measuring device comprises a probe assembly which is provided with a probe, and the probe is used for being in contact with a workpiece; and the flexible mechanism is flexibly connected with the probe assembly, and the flexible mechanism is used for resetting deflection generated by the probe assembly when the probe is in contact with the workpiece. The workpiece size measuring device is used for overcoming the defect that the surface of a workpiece is damaged due to the fact that the workpiece is in hard contact with the workpiece in the prior art, the flexible mechanism is flexibly connected with the probe assembly, the probe assembly is deflected when the probe is in contact with the workpiece, the hard contact between the probe and the workpiece is avoided, and the measuring accuracy is improved. Certain buffering is generated; and after the probe is separated from the workpiece, the flexible mechanism is used for resetting, so that the surface damage of the workpiece is avoided, the surface precision of the workpiece is improved, and the service life of the probe is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of workpiece processing, in particular to a workpiece size measuring device and workpiece processing equipment. Background Art

[0002] In the existing workpiece processing process, multiple dimensional measurements and adjustments are required. For example, the railway vehicle axle processing process route is mainly divided into turning and grinding; the axle processing procedure is divided into multiple steps, and multiple manual dimensional measurements and adjustments are required during processing. The manual dependence is high, which reduces product production efficiency and increases product quality risks. In order to ensure the service performance of the axle, the axle processing technology has high requirements, and the axle clamping and positioning accuracy must be strictly guaranteed during the processing. The traditional process includes multiple clamping and measurement adjustments. Each clamping and measurement process requires fixture and tool installation adjustment, fixture positioning accuracy detection, turning accuracy detection, etc., which prolongs the axle processing auxiliary time and restricts the improvement of axle processing accuracy.

[0003] Therefore, existing workpiece processing mostly uses automatic equipment for mechanical measurement to provide accuracy. However, the existing measuring equipment may cause damage to the workpiece during the hard contact with the workpiece, thereby affecting the surface accuracy of the workpiece. Utility Model Content

[0004] The utility model provides a workpiece size measuring device and workpiece processing equipment, which are used to solve the defect in the prior art that the workpiece surface is damaged due to hard contact between the measuring process and the workpiece, realize the flexible connection between the probe assembly and the flexible mechanism, avoid the hard contact between the workpiece and the probe, and ensure the surface accuracy of the workpiece.

[0005] The utility model provides a workpiece size measuring device, comprising:

[0006] A probe assembly, wherein the probe assembly is provided with a probe, and the probe is used to contact the workpiece;

[0007] A flexible mechanism is flexibly connected to the probe assembly, and is used to reset the deflection of the probe assembly when the probe contacts the workpiece.

[0008] According to the workpiece size measuring device provided by the utility model, the probe assembly includes a probe and a connecting rod, the probe is installed on the connecting rod, the probe is provided on the probe, and the connecting rod is inserted into the flexible mechanism and flexibly connected to the flexible mechanism.

[0009] According to the workpiece size measuring device provided by the utility model, the flexible mechanism includes a shell and a flexible connector, the connecting rod is inserted into the shell, the flexible connector is arranged between the shell and the connecting rod, and the flexible connector is used to reset the deflection between the connecting rod and the shell.

[0010] According to the workpiece size measuring device provided by the utility model, the flexible mechanism includes at least four flexible connecting members, and the flexible connecting members are arranged at equal angles in the circumference of the connecting rod.

[0011] According to the workpiece size measuring device provided by the utility model, the flexible connecting member is a spring.

[0012] According to the workpiece size measuring device provided by the utility model, the probe comprises four probes, and adjacent probes are vertically arranged.

[0013] According to the workpiece size measuring device provided by the utility model, the length of one of the probes of the probe head is longer than the lengths of the other three probes, and is used for detecting the inner hole of the workpiece.

[0014] According to the workpiece dimension measuring device provided by the utility model, the probe is a contact sensor for triggering an in-position signal.

[0015] The utility model also provides a workpiece processing device, comprising a machine tool, a mounting seat and the above-mentioned workpiece size measuring device, wherein the flexible mechanism is detachably arranged on the machine tool through the mounting seat.

[0016] According to the workpiece processing equipment provided by the utility model, at least one probe of the probe assembly is parallel to the axial direction of the machine tool.

[0017] The workpiece size measuring device provided by the utility model is flexibly connected to the probe assembly through a flexible mechanism, so that when the probe contacts the workpiece, the probe assembly is deflected to avoid hard contact between the probe and the workpiece and to produce a certain buffer; after the probe is separated from the workpiece, it is reset through the flexible mechanism to avoid surface damage of the workpiece, improve the surface accuracy of the workpiece, and thus extend the service life of the probe.

[0018] Furthermore, in the workpiece processing equipment provided by the present invention, since it is provided with the workpiece dimension measuring device as described above, it also has the various advantages as described above. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the present invention or the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 It is a schematic diagram of the overall structure of the workpiece size measuring device provided by the utility model;

[0021] Figure 2 This is a schematic diagram of the deflected state of the connecting rod provided by the utility model;

[0022] Figure 3 This is one of the schematic diagrams of the flexible connector structure provided by the utility model;

[0023] Figure 4 This is the second schematic diagram of the flexible connector structure provided by the utility model.

[0024] Reference numerals:

[0025] 100: probe assembly; 110: probe; 120: connecting rod; 101: first probe; 102: second probe; 103: third probe; 104: fourth probe; 105: mounting box; 200: flexible mechanism; 201: flexible connector; 202: housing; 210: mounting seat; 300: workpiece. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be described clearly and completely in conjunction with the drawings in the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] In the description of the embodiments of the present utility model, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the embodiments of the present utility model. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0028] In the description of the embodiments of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present utility model can be understood according to specific circumstances.

[0029] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model embodiment. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0030] Combine the following Figures 1 to 4 It should be understood that the following description is only an illustrative embodiment of the present invention and does not constitute a limitation on the present invention.

[0031] like Figure 1 and Figure 2 As shown, the utility model provides a device for measuring the size of a workpiece 300, including: a probe assembly 100 and a flexible mechanism 200, wherein the probe assembly 100 is provided with a probe, and the probe is used to contact the workpiece 300; the flexible mechanism 200 is flexibly connected to the probe assembly 100, and the flexible mechanism 200 is used to reset the deflection generated by the probe assembly 100 when the probe contacts the workpiece 300. In other words, when the probe 110 is in contact with the workpiece 300, the flexible mechanism 200 and the probe assembly 100 generate elastic deformation.

[0032] Specifically, during the measurement of the workpiece 300, the probe assembly 100 moves from the initial position to the position of the workpiece 300, and the probe of the probe assembly 100 contacts the workpiece 300. During the contact between the probe and the workpiece 300, a deflection is generated between the probe assembly 100 and the flexible mechanism 200. The deflection is a small swing or a small offset, which is used to buffer the contact between the probe and the workpiece 300 and avoid damage to the probe at the moment of contact. When there is a gap between the probe and the workpiece 300, the probe assembly 100 and the flexible mechanism 200 are reset to the initial state. Among them, the distance moved by the probe can be used to determine the size of the workpiece 300, thereby realizing the measurement of the workpiece 300.

[0033] The device for measuring the size of a workpiece 300 provided by the utility model is flexibly connected to the probe assembly 100 through a flexible mechanism 200, so that when the probe contacts the workpiece 300, the probe assembly 100 is deflected, thereby avoiding hard contact between the probe and the workpiece 300 and generating a certain buffer; after the probe is separated from the workpiece 300, it is reset through the flexible mechanism 200, thereby avoiding surface damage to the workpiece 300, improving the surface accuracy of the workpiece 300, and thus extending the service life of the probe.

[0034] The elastic deformation between the probe assembly 100 and the flexible mechanism 200 includes: the relative position between the probe assembly 100 and the flexible mechanism 200 is offset and can be reset. For example, when there is a gap between the probe and the workpiece 300, the probe assembly 100 and the flexible mechanism 200 are coaxial, and when the probe and the workpiece 300 are in contact, the probe assembly 100 and the flexible mechanism 200 are not colinear, for example, the angle between the probe assembly 100 and the flexible mechanism 200 is less than 180 degrees.

[0035] Continue to refer Figure 1 In one embodiment of the present invention, the probe assembly 100 includes a probe 110 and a connecting rod 120, the probe 110 is mounted on the connecting rod 120, a probe is provided on the probe 110, and the connecting rod 120 is inserted into the flexible mechanism 200 and flexibly connected to the flexible mechanism 200.

[0036] Specifically, the probe 110 is installed at one end of the connecting rod 120, and the other end of the connecting rod 120 is connected to the flexible mechanism 200, wherein the flexible connection between the connecting rod 120 and the flexible mechanism 200 includes that the connecting rod 120 can be deflected in any direction relative to the flexible mechanism 200, and can be reset. In addition, the connecting rod 120 and the flexible mechanism 200 have an axial limit along the axial direction of the connecting rod 120 to prevent the connecting rod 120 from moving up and down relative to the flexible mechanism 200 when the probe contacts the workpiece 300.

[0037] For example, the connecting rod 120 may be a single rod structure or a multi-rod telescopic connecting structure. When the connecting rod 120 is a multi-rod telescopic connecting structure, the length of the connecting rod 120 may be adjusted. The connecting rod 120 may be a hollow pipe.

[0038] In addition, the flexible mechanism 200 can be a cylindrical barrel structure, and a connecting hole is provided at one end of the flexible mechanism 200 close to the connecting rod 120. The connecting rod 120 is inserted into the connecting hole. An anti-collision ring can be provided between the connecting hole and the connecting rod 120, and there is a gap between the connecting hole and the connecting rod 120.

[0039] like Figure 3 and Figure 4 As shown, in another embodiment of the utility model, the flexible mechanism 200 includes a shell 202 and a flexible connector 201, the connecting rod 120 is inserted into the shell 202, and a flexible connector 201 is arranged between the shell 202 and the connecting rod 120, and the flexible connector 201 is used to reset the deflection between the connecting rod 120 and the shell 202.

[0040] In other words, a connection hole is provided at the end of the housing 202, one end of the connection rod 120 is inserted into the connection hole, and a flexible connector 201 is provided between the connection rod 120 and the inner wall of the housing 202. In addition, an annular boss may be provided on the connection rod 120, and the diameter of the annular boss is larger than the diameter of the connection hole, so as to limit the connection rod 120 in the housing 202. When the probe contacts the workpiece 300, an offset occurs between the connection rod 120 and the housing 202, and the flexible connector 201 is deformed at this time; when a gap is generated between the probe and the workpiece 300, the connection rod 120 and the housing 202 are also reset under the reset of the flexible connector 201.

[0041] Furthermore, in an optional embodiment of the present invention, the flexible mechanism 200 further includes a sensor, which is installed in the housing 202, and is used to detect the position change between the connecting rod 120 and the housing 202. The sensor sends the position change in the form of an electrical signal to the controller of the workpiece 300 dimension measuring device, and the controller obtains the electrical signal of the sensor to stop the probe from moving.

[0042] For example, the sensor may be a distance sensor. A plurality of sensors may be provided in the housing 202, and when one of the sensors sends an electrical signal, the controller controls the probe to stop moving.

[0043] In addition, in another optional embodiment of the present invention, the probe is a contact sensor for triggering an in-position signal. When the probe contacts the workpiece 300, the in-position signal of the probe is triggered, and the probe sends the in-position signal to the controller of the workpiece 300 dimension measuring device. The controller receives the in-position signal and stops the probe from moving, that is, the probe assembly 100 stops moving.

[0044] like Figure 3 As shown, in other embodiments of the present invention, the flexible mechanism 200 includes at least four flexible connectors 201, and the flexible connectors 201 are arranged at equal angles around the connecting rod 120. The connecting rod 120 and the flexible mechanism 200 can be deflected in different directions to achieve the effect of resetting.

[0045] Specifically, in some embodiments of the present invention, the flexible connection member 201 is a spring, for example, a cylindrical spring.

[0046] Continue to refer Figure 1 In a specific embodiment of the present invention, the probe 110 includes four probes, and the adjacent probes are arranged vertically. The four probes can correspond to the positions of the four elastic flexible members one by one, thereby achieving a better resetting effect.

[0047] Among them, the four probes can measure the size of the workpiece 300 without rotating when the workpiece 300 size measuring device measures the size of the workpiece 300, thereby reducing the setting of the rotating structure, reducing costs, and simplifying the operation logic.

[0048] For example, the probe 110 includes a mounting box 105, a first probe 101, a second probe 102, a third probe 103, and a fourth probe 104. The first probe 101, the second probe 102, the third probe 103, and the fourth probe 104 are all mounted on the mounting box 105, and the first probe 101, the second probe 102, the third probe 103, and the fourth probe 104 are coplanar. The first probe 101 and the third probe 103 are arranged oppositely and collinearly, the second probe 102 and the fourth probe 104 are arranged oppositely and collinearly, and the first probe 101 and the second probe 102 are arranged vertically. The second probe 102 and the fourth probe 104 can be used to measure the radial dimension of the workpiece 300; the first probe 101 and the second probe 102 can be used to measure the axial dimension of the workpiece 300.

[0049] In addition, in some embodiments of the present invention, the length of one of the probes of the probe 110 is longer than the lengths of the other three probes, and is used to detect the inner hole of the workpiece 300. For example, the length of the first probe 101 is greater than the lengths of the second probe 102, the third probe 103, and the fourth probe 104, and the lengths of the second probe 102, the third probe 103, and the fourth probe 104 are equal.

[0050] The utility model also provides a workpiece 300 processing device, including a machine tool, a mounting seat 210 and the workpiece 300 dimension measuring device of the above embodiment, wherein the flexible mechanism 200 is detachably arranged on the machine tool through the mounting seat 210. Specifically, the mounting seat 210 is fastened to the tool position of the machine tool turret by a locking bolt.

[0051] In the machine tool space, the probe 110 is equivalent to a tool on the machine tool turret. The machining program can select and instruct the probe 110 to move radially and axially to a fixed position, that is, the measuring probe 110 moves with the turret to complete the vertical or horizontal measurement operation relative to the axis of the machine tool. As long as the probe contacts the surface of the workpiece 300 in any direction, causing the connecting rod 120 to swing or move slightly, the probe will immediately generate an acoustic and optical signal to indicate its working state. There is a closed active circuit sensor inside the workpiece 300 dimension measuring device. The circuit sensor transmits the acoustic and optical signals to the data acquisition and analysis system, i.e., the controller, in real time through the transmission system. It can automatically measure and detect key dimensions, store the measured values, and establish a database of mapping relationships between actual machining conditions and tool compensation strategies. The accuracy of tool compensation is improved through in-process measurement.

[0052] like Figure 2 As shown, in one embodiment of the present invention, at least one probe of the probe assembly 100 is parallel to the axial direction of the machine tool. For example, in the initial state, the first probe 101 and the third probe 103 are parallel to the axial direction of the machine tool, and the second probe 102 and the fourth probe 104 are perpendicular to the axis of the machine tool.

[0053] Among them, the workpiece 300 processing equipment can be part of the flexible production line for railway vehicle workpiece 300 processing. Railway vehicle workpiece 300 processing mainly includes turning and grinding processes. The workpiece 300 dimension measuring device is used for online detection of key dimensions of the workpiece 300 during the processing process, driving the real-time control of process parameters, effectively ensuring the processing accuracy of the workpiece 300 and improving product quality. At the same time, it is suitable for accurate measurement of key dimensions during the trial production of new models of products, driving the dynamic modification of global variables of the data system program, realizing rapid production line change, and significantly improving the compatibility of production line products and production flexibility.

[0054] Specifically, the workpiece 300 dimension measuring device can be used for online detection of key dimensions during the processing of the workpiece 300, solving the quality problem caused by manual measurement during program interruption during the processing of the workpiece 300, and driving the real-time control of process parameters according to the trend of the size change of the workpiece 300, effectively improving the processing efficiency and quality of the workpiece 300. The operator can monitor the processing measurement data, control the processing of various parts of the workpiece 300, and realize a new processing mode of one person with multiple machines.

[0055] The workpiece 300 dimension measuring device can be used to accurately measure key dimensions during the trial production of new models, drive the dynamic modification of global variables in the data system program, realize rapid production line change, and significantly improve the compatibility of production line products and production flexibility. In line with the continuity and lean concept of the production process, the quality and efficiency of workpiece 300 processing have been comprehensively improved.

[0056] Furthermore, in the workpiece 300 processing equipment provided by the present invention, since it is provided with the workpiece 300 dimension measuring device as described above, it also has the various advantages as described above.

[0057] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. A workpiece size measuring device, characterized in that: include: A probe assembly, wherein the probe assembly is provided with a probe, and the probe is used to contact the workpiece; A flexible mechanism is flexibly connected to the probe assembly, and is used to reset the deflection of the probe assembly when the probe contacts the workpiece.

2. The workpiece dimension measuring device according to claim 1, characterized in that: The probe assembly comprises a probe and a connecting rod, the probe is mounted on the connecting rod, the probe is provided with the probe, and the connecting rod is inserted into the flexible mechanism and flexibly connected to the flexible mechanism.

3. The workpiece dimension measuring device according to claim 2, characterized in that: The flexible mechanism comprises a shell and a flexible connector. The connecting rod is inserted into the shell. The flexible connector is arranged between the shell and the connecting rod. The flexible connector is used to reset the deflection between the connecting rod and the shell.

4. The workpiece dimension measuring device according to claim 3, characterized in that: The flexible mechanism comprises at least four flexible connectors, and the flexible connectors are arranged at equal angles in the circumference of the connecting rod.

5. The workpiece dimension measuring device according to claim 4, characterized in that: The flexible connection member is a spring.

6. The workpiece dimension measuring device according to any one of claims 2 to 5, characterized in that: The probe includes four probes, and adjacent probes are vertically arranged.

7. The workpiece dimension measuring device according to claim 6, characterized in that: The length of one of the probes of the probe is longer than that of the other three probes, and the probe is used for detecting the inner hole of the workpiece.

8. The workpiece dimension measuring device according to claim 1, characterized in that: The probe is a contact sensor used to trigger an arrival signal.

9. A workpiece processing device, characterized in that: The device comprises a machine tool, a mounting seat and a workpiece dimension measuring device as claimed in any one of claims 1 to 8, wherein the flexible mechanism is detachably arranged on the machine tool via the mounting seat.

10. The workpiece processing equipment according to claim 9, characterized in that: At least one probe of the probe assembly is parallel to the axial direction of the machine tool.

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