Part deep hole measuring device

Abstract

The utility model discloses a component deep hole measuring device which is characterized in that the component deep hole measuring device comprises a deep hole measuring mechanism and a protective shell, the deep hole measuring mechanism comprises a mounting plate partially arranged in the protective shell and a measuring rod arranged on the mounting plate, and one end of the measuring rod far away from the protective shell is provided with a deep hole elastic contact; the deep hole elastic contact is matched with the inner wall of the deep hole, the deep hole elastic contact is connected with a first sensor, the first sensor is used for calculating the diameter of the deep hole, and the end, located in the protective shell, of the mounting plate is connected with the protective shell through a flexible connecting piece; through the above mode, the device can automatically measure the diameters of deep holes and shallow holes of parts in a high-precision manner.

Description

TECHNICAL FIELD

[0001] The utility model relates to deep hole measuring technical field, in particular to a kind of deep hole measuring device of spare part. BACKGROUND

[0002] Full-automatic equipment replaces manual labor, which is an irreversible industrial development trend. Therefore, enterprises have been committed to developing and researching full-automatic measuring equipment for high-precision electromechanical products. However, it is found that the detection and measurement of deep holes of many special parts are still in the artificial detection and verification stage. For example, there are a large amount of cutting fluid and impurities in the bottom hole of the diesel engine cylinder cover guide pipe during the machining process. The artificial use of pneumatic measuring rod is unstable, the hole diameter is limited, multiple sensors cannot be arranged, and the measurement of the extended rod is too long, resulting in large error.

[0003] Moreover, artificial detection is low in efficiency and cannot guarantee accuracy. During the measurement process, measurement deviation may occur due to process technology such as measurement personnel's operation method, which cannot guarantee product quality. INVENTION CONTENTS

[0004] The utility model mainly solves the technical problem to provide a kind of deep hole measuring device of spare part, can be automatically to the deep hole and shallow hole of spare part carry out the diameter of high-precision measurement.

[0005] To solve the above technical problems, one technical scheme of the utility model is provided: a kind of deep hole measuring device of spare part, characterized by comprising: deep hole measuring mechanism and protective shell, deep hole measuring mechanism includes installation plate partially arranged in protective shell and measuring rod installed on installation plate, the end of measuring rod away from protective shell is provided with deep hole elastic contact, deep hole elastic contact is matched with the inner wall of deep hole, deep hole elastic contact is connected with first sensor, first sensor is used to calculate the diameter of deep hole, one end of installation plate in protective shell is connected with protective shell by flexible connecting piece.

[0006] Preferably, a center adjusting mechanism is arranged in the protective shell, the center adjusting mechanism includes a first center adjusting bolt and a second center adjusting bolt, the first center adjusting bolt is threadedly connected with the protective shell and abuts against one side of the installation plate at one end, the head of the second center adjusting bolt is limitingly movably connected with the protective shell, and the rod portion of the second center adjusting bolt is threadedly connected with the installation plate, and the swinging amount of the measuring rod in the direction of the measuring point is adjusted and limited by adjusting the positions of the first center adjusting bolt and the second center adjusting bolt.

[0007] Preferably, a self-adapting mechanism is arranged in the protective shell, the self-adapting mechanism includes a self-adapting screw and a first spring, the self-adapting screw is connected with the protective shell, and the two ends of the first spring abut against one end of the self-adapting screw and one side of the installation plate, respectively, and the self-adapting mechanism is used to stabilize the position of the measuring rod.

[0008] Preferably, the anti-collision mechanism comprises an anti-collision shell, a telescopic rod, a compression spring, a swing adjusting ring and a signal detection ring, the telescopic rod is sleeved with the anti-collision shell, the telescopic rod is in sliding fit with the anti-collision shell, the swing adjusting ring is sleeved on the telescopic rod, the telescopic rod is adjusted and limited in angle swing through the swing adjusting ring so as to adapt to the position of the deep hole, the compression spring is sleeved on the telescopic rod and the two ends of the compression spring are respectively abutted with the inside of the anti-collision shell and the outer edge of the telescopic rod, the telescopic rod is moved along the axial direction through the compression spring, the signal detection ring is arranged at one end of the telescopic rod to cooperate with the proximity switch to detect the position of the signal detection ring, and one end of the telescopic rod is connected with the protective shell.

[0009] Preferably, the position adjusting mechanism further comprises a supporting plate and a spring plunger arranged on the supporting plate, the supporting plate is connected with the anti-collision shell, and the spring plunger is abutted with the mounting plate so as to balance the self weight of the measuring rod and reduce the lateral force of the measuring rod on the parts.

[0010] Preferably, the end of the measuring rod is connected with a positioning base, and a guide chamfer is arranged at the end, away from the measuring rod, of the positioning base.

[0011] Preferably, a shallow hole elastic contact is arranged at the end, close to the measuring rod, of the protective shell, the shallow hole elastic contact is matched with the inner wall of the shallow hole, the shallow hole is coaxial with the deep hole, the shallow hole elastic contact is connected with a second sensor, and the second sensor is used for calculating the diameter of the shallow hole.

[0012] Preferably, an output signal integrated module is arranged on the protective shell, and the output signal integrated module is electrically connected with the first sensor and the second sensor.

[0013] Preferably, the flexible connecting piece is a spring steel sheet.

[0014] The utility model discloses a kind of automatic measurement devices for deep hole parts, which can automatically measure the diameter of deep hole and shallow hole of parts with high precision, and has flexibility. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is the overall exploded schematic view of the utility model;

[0016] Figure 2 It is the overall sectional view of the utility model;

[0017] Figure 3 It is Figure 2 A enlarged schematic view of part A in Fig.

[0018] Figure 4 is a sectional view of the anti-collision mechanism of the utility model;

[0019] Figure 5 is a structural schematic view of the position adjusting mechanism of the utility model;

[0020] Figure 6 is a schematic view of the position relationship between the shallow-hole elastic contact and the protective shell of the utility model;

[0021] Figure 7 is a structural schematic view of the measuring rod of the utility model.

[0022] The marks of the components in the drawings are as follows:

[0023] 1, protective shell; 11, shallow-hole elastic contact;

[0024] 21, mounting plate; 22, measuring rod; 221, deep-hole elastic contact;

[0025] 31, first center adjusting bolt; 32, second center adjusting bolt;

[0026] 41, self-adapting screw; 42, first spring;

[0027] 51, anti-collision shell; 52, telescopic rod; 53, compression spring; 54, swing adjusting ring; 55, signal detection ring;

[0028] 61, support plate; 62, spring plunger;

[0029] 7, positioning base;

[0030] 8, output signal integrated module;

[0031] 91, flexible connecting piece. DETAILED DESCRIPTION

[0032] In order to make the above purpose, features and advantages of the utility model more obvious and easy to understand, the specific embodiments of the utility model are described in detail below in combination with the drawings. In the following description, a lot of specific details are set forth in order to fully understand the utility model. But the utility model can be implemented in many other ways different from the description, and those skilled in the art can make similar improvements without departing from the connotation of the utility model, so the utility model is not limited by the following disclosed specific embodiments.

[0033] In the description of the utility model, it is understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like is the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.

[0034] In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first" and "second" can explicitly or implicitly include at least one of the features. In the description of the utility model, the meaning of "multiple" is at least two, for example, two, three, etc., unless otherwise specifically limited.

[0035] In the utility model, unless otherwise specifically defined and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrated; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium, it can be the communication or interaction relationship between two elements, unless otherwise specifically limited. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0036] In the utility model, unless otherwise specifically defined and limited, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact between the first and second features through intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be directly above or obliquely above the first feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be directly below or obliquely below the first feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.

[0037] It is to be understood that when an element as a preamble is referred to as being "on" or "connected" to" another element, it can be directly on or connected to the other element or intervening elements can also be present. In the description of the disclosure, the terms "vertical", "horizontal", "upper", "lower", "left", "right", and similar expressions are used for the purpose of explanation only and are not intended to be limiting.

[0038] In the formula, the physical quantity, if not marked separately, should be understood as the basic quantity of the basic unit of the International System of Units, or the derived quantity derived from the basic quantity by multiplication, division, differentiation or integration, etc. Mathematical operation.

[0039] Embodiments:

[0040] Reference Figures 1-7 A kind of component deep hole measuring device, comprising: deep hole measuring mechanism and protective shell 1, deep hole measuring mechanism includes part installation plate 21 installed in protective shell 1 and measuring rod 22 installed on installation plate 21, the end of measuring rod 22 away from protective shell 1 is equipped with deep hole elastic contact 221, deep hole elastic contact 221 is matched with the inner wall of deep hole, deep hole elastic contact 221 is connected with first sensor, by inserting measuring rod 22 into the deep hole of component (such as machine cylinder cover guide pipe), deep hole elastic contact 221 on measuring rod 22 is mechanically limited by the inner wall of deep hole, so that first sensor compresses or extends to make deep hole elastic contact 221 always contact with the inner wall of deep hole, the position of deep hole elastic contact 221 is limited by deep hole, so that the magnetic core in sensor is driven to change by deep hole elastic contact 221 installed on first sensor, then the change amount of first sensor is output, so as to calculate the diameter of the measured deep hole by comparing the change of the calibration value of standard part. Therefore, the first sensor is used to calculate the diameter of the deep hole. One end of installation plate 21 in protective shell is connected with protective shell 1 by flexible connecting piece 91, flexible connecting piece 91 is spring steel sheet, flexible connecting piece 91 can swing measuring rod 22 along the direction of measuring point by installation plate 21, ensure that the contact can be completely contacted with the inner wall of deep hole, avoid the error caused by the contact and workpiece not being contacted.

[0041] Figures 1-3, the center adjusting mechanism is arranged in the protective shell 1, and the center adjusting mechanism comprises a first center adjusting bolt 31 and a second center adjusting bolt 32. The first center adjusting bolt 31 is in threaded connection with the protective shell 1 and abuts against one side of the mounting plate 21 at one end. The head of the second center adjusting bolt 32 is in limitingly movable connection with the protective shell 1, and the rod of the second center adjusting bolt 32 is in threaded connection with the mounting plate 21. That is, a hole is formed in the interior of the protective shell 1, and only the rod of the second center adjusting bolt 32 can pass through the hole. The rod of the second center adjusting bolt 32 passes through the hole, so that the head of the second center adjusting bolt 32 cannot pass through the hole, thereby realizing the sliding fit of the second center adjusting bolt 32 with the protective shell 1 with certain limitation. Therefore, the positions of the first center adjusting bolt 31 and the second center adjusting bolt 32 are adjusted by adjusting and limiting the swing amount of the mounting plate 21 along the direction of the measuring point, so as to adjust and limit the swing amount of the measuring rod 22 along the direction of the measuring point. Therefore, the measuring rod 22 can have certain adaptability and will not be damaged due to the swing amplitude being too large.

[0042] Reference Figure 3 In order to further improve the stability of the measuring rod 22 and protect the measuring rod 22, an adaptive mechanism is arranged in the protective shell 1. The adaptive mechanism comprises an adaptive screw rod 41 and a first spring 42. The adaptive screw rod 41 is in threaded connection with the protective shell 1, so that the adaptive screw rod 41 can be adjusted. The two ends of the first spring 42 abut against one end of the adaptive screw rod 41 and one side of the mounting plate 21 respectively, so that the first spring 42 further supports and stabilizes the position of the supporting plate 61, and further stabilizes the position of the measuring rod 22.

[0043] Reference Figures 1-4 In order to avoid damage to the measuring rod 22 and the device when the measuring rod 22 is stuck or not in position when entering the deep hole, a collision prevention mechanism is further provided. The collision prevention mechanism comprises a collision prevention shell 51, an extension rod 52, a compression spring 53, a swing adjustment ring 54 and a signal detection ring 55. The extension rod 52 is sleeved on the collision prevention shell 51 and is in sliding fit with the collision prevention shell 51. The swing adjustment ring 54 is sleeved on the extension rod 52, and the extension rod 52 is adjusted in angle swing and limited in position through the swing adjustment ring 54 so as to adapt to the position of the deep hole. The compression spring 53 is sleeved on the extension rod 52 and abuts against the interior of the collision prevention shell 51 and the outer edge of the extension rod 52 at two ends respectively. The extension rod 52 moves along the axial direction through the compression spring 53. The signal detection ring 55 is installed at one end of the extension rod 52 to cooperate with the proximity switch to detect the position of the signal detection ring 55. One end of the extension rod 52 is connected with the protective shell 1. The collision prevention mechanism allows the extension rod 52 to swing in the circumferential direction of the axis of the extension rod 52 by 0.3 degrees in positive and negative directions, so as to make the measuring rod 22 more easily enter the deep hole.

[0044] Reference Figure 1 And Figure 5Further comprising a position adjusting mechanism, the position adjusting mechanism comprises a support plate 61 and a spring plunger 62 mounted on the support plate 61, the support plate 61 is connected with the anti-collision shell 51, and the spring plunger 62 abuts against the mounting plate 21 to balance the self weight of the measuring rod 22 to reduce the lateral force of the parts on the measuring rod 22. The support plate 61 serves as a force support of the spring plunger 62, and the length of the spring plunger 62 extending from the support plate 61 can be adjusted to balance the self weight of the measuring rod 22. The self weight of the measuring rod 22 is balanced through the compression of the plunger spring, the measuring rod 22 is more easily swung when entering the deep hole, the lateral force of the parts on the measuring rod 22 is reduced, and the deformation of the measuring rod 22 and the friction on the parts are reduced.

[0045] Reference Figure 1 , Figure 3 , Figure 7 The end of the measuring rod 22 is connected with a positioning base 7, and a guide chamfer is arranged at the end away from the measuring rod 22. The positioning base 7 provides protection for the measuring rod 22 and facilitates the precise positioning of the measuring rod 22 on the parts. The positioning base 7 is first contacted with the measured deep hole during measurement, and the front end is provided with a chamfer for guiding. The circumferential swing and forward and backward movement of the anti-collision mechanism ensure that the measuring rod 22 can smoothly enter the deep hole for measurement.

[0046] Reference Figure 1 and Figure 6 In order to synchronously measure different diameters of shallow holes concentric with the deep hole of the part, and realize the function of measuring multiple measurement items at the same time, the protective shell 1 is provided with a shallow hole elastic contact 11 at the end close to the measuring rod 22. The shallow hole elastic contact 11 cooperates with the inner wall of the shallow hole, the shallow hole is coaxial with the deep hole, the shallow hole elastic contact 11 is connected with a second sensor, and the second sensor is used to calculate the diameter of the shallow hole. The principle of shallow hole diameter detection is the same as that of deep hole diameter detection.

[0047] Reference Figure 1 The protective shell 1 is provided with an output signal integrated module 8, and the output signal integrated module 8 is electrically connected with the first sensor and the second sensor. The output signal integrated module 8 integrates the signal lines of multiple sensors and is welded on one circuit board, and is output through one or more multi-core wires, thereby reducing the joint connection and avoiding the signal interference or poor contact caused by the splashing of cutting fluid.

[0048] Reference Figures 1-7In the initial adjustment of the device, the position adjustment mechanism can be used to adjust the position of the front end of the measuring rod 22 to compensate for the position error caused by the installation and debugging of the external structure. After the position is adjusted, the automatic feeding mechanism can drive the structure into the measured part, and the base 7 is first positioned in contact with the measured deep hole. If the position deviation of the measured deep hole and the position of the positioning base 7 exceeds the floating range of the anti-collision mechanism, the position of the measuring rod 22 remains unchanged, the position of the signal detection ring 55 of the anti-collision mechanism moves, and an alarm signal is triggered. The automatic feeding mechanism stops moving forward, retreats to the starting position and stops working, and an alarm is given. Human intervention is required to handle the problem. If the anti-collision mechanism does not alarm, the feeding mechanism drives the automatic measurement structure to advance to the measured section of the measured workpiece, and the deep groove elastic contact on the measuring rod 22 is mechanically limited by the hole wall of the measured part deep hole. The first sensor is compressed or extended, and the deep groove elastic contact is kept in contact with the hole wall of the deep hole. The change of the first sensor is output to the industrial computer through the output signal integrated module 8, and the change of the calibration value of the standard part is compared. The actual value of the measured hole is calculated. After the automatic feeding mechanism is fed to the shallow hole concentric with the measured deep hole, the shallow hole elastic contact 11 is compressed, and the shallow hole can be measured at the same time. At this time, the device completes the measurement process of the part. After the data acquisition and analysis are completed, the data can be fed back to the workpiece machining center. The machining center adjusts the machining parameters of the next part in time according to the tolerance data analysis and corrects the size deviation to ensure that the size detection of the workpiece meets the tolerance requirements. The device has short measurement cycle time, real-time data acquisition and analysis, and uploading system. The production line realizes the full-automatic process from production and measurement to detection, improves the production efficiency of enterprises, and improves the product quality. The device reduces the manufacturing cost of enterprises.

[0049] The above description is only an embodiment of the present application, and does not limit the patent range of the present application. Any equivalent structure or equivalent process transformation, or direct or indirect application in other related technical fields, is also included in the patent protection range of the present application.

Claims

1. A deep hole measuring device for components, characterized in that, include: The deep hole measuring mechanism and the protective housing (1) are provided. The deep hole measuring mechanism includes a mounting plate (21) partially disposed in the protective housing (1) and a measuring rod (22) mounted on the mounting plate (21). The end of the measuring rod (22) away from the protective housing (1) is provided with a deep hole elastic contact (221). The deep hole elastic contact (221) cooperates with the inner wall of the deep hole. The deep hole elastic contact (221) is connected to a first sensor. The first sensor is used to calculate the diameter of the deep hole. The end of the mounting plate (21) inside the protective housing (1) is connected to the protective housing through a flexible connector (91).

2. The deep hole measuring device for components according to claim 1, characterized in that: The protective housing (1) is provided with a center adjustment mechanism, which includes a first center adjustment bolt (31) and a second center adjustment bolt (32). The first center adjustment bolt (31) is threaded to the protective housing (1) and one end abuts against one side of the mounting plate (21). The head of the second center adjustment bolt (32) is movably connected to the protective housing (1) and the rod of the second center adjustment bolt (32) is threaded to the mounting plate (21). The swing of the measuring rod (22) along the direction of the measuring point is adjusted and limited by adjusting the position of the first center adjustment bolt (31) and the second center adjustment bolt (32).

3. The deep hole measuring device for components according to claim 1, characterized in that: An adaptive mechanism is provided inside the protective housing (1). The adaptive mechanism includes an adaptive screw (41) and a first spring (42). The adaptive screw (41) is connected to the protective housing (1). The two ends of the first spring (42) abut against one end of the adaptive screw (41) and one side of the mounting plate (21), respectively. The adaptive mechanism is used to stabilize the position of the measuring rod (22).

4. The deep hole measuring device for components according to claim 1, characterized in that: It also includes an anti-collision mechanism, which includes an anti-collision housing (51), a telescopic rod (52), a compression spring (53), a swing adjustment ring (54), and a signal detection ring (55). The anti-collision housing (51) is sleeved on the telescopic rod (52), and the telescopic rod (52) slides in conjunction with the anti-collision housing (51). The swing adjustment ring (54) is sleeved on the telescopic rod (52), and the telescopic rod (52) is angularly swung and limited by the swing adjustment ring (54) to adapt to the position of the deep hole. The compression spring (53) is sleeved on the telescopic rod (52), and its two ends abut against the inside of the anti-collision housing (51) and the outer edge of the telescopic rod (52), respectively. The telescopic rod (52) moves axially by means of the compression spring (53). The signal detection ring (55) is set at one end of the telescopic rod (52) to match the position of the proximity switch detection signal detection ring (55). One end of the telescopic rod (52) is connected to the protective housing (1).

5. The deep hole measuring device for components according to claim 1, characterized in that: It also includes a position adjustment mechanism, which includes a support plate (61) and a spring plunger (62) disposed on the support plate (61). The support plate (61) is connected to the anti-collision housing (51), and the spring plunger (62) abuts against the mounting plate (21) to balance the weight of the measuring rod (22) and reduce the lateral force of the components on the measuring rod (22).

6. The deep hole measuring device for components according to claim 1, characterized in that: The end of the measuring rod (22) is connected to a positioning base (7), and the end of the positioning base (7) away from the measuring rod (22) is provided with a guide chamfer.

7. The deep hole measuring device for components according to claim 1, characterized in that: The protective housing (1) is provided with a shallow hole elastic contact (11) at one end near the measuring rod (22). The shallow hole elastic contact (11) is engaged with the inner wall of the shallow hole. The shallow hole is coaxial with the deep hole. The shallow hole elastic contact (11) is connected to a second sensor, which is used to calculate the diameter of the shallow hole.

8. The deep hole measuring device for components according to claim 1, characterized in that: The protective housing (1) is provided with an output signal integration module (8), which is electrically connected to the first sensor and the second sensor.

9. A deep hole measuring device for components according to claim 1, characterized in that: The flexible connector (91) is a spring steel sheet.

Images