Automatic combined measuring device for boundary dimension and planeness of flat plate type part

Abstract

The utility model discloses an automatic combined measuring device for the boundary dimension and planeness of a flat plate part, which comprises a base, a vacuum adsorption platform, a displacement sensor, a planeness detection unit and a right-angle backer, and is characterized in that the vacuum adsorption platform is horizontally arranged on the base and can move in the X direction and the Y direction on the base; the right-angle backer is fixedly connected to the vacuum adsorption platform, the two displacement sensors are arranged on the X-direction movement path and the Y-direction movement path of the vacuum adsorption platform respectively, measuring heads of the two displacement sensors directly face the two side edges of the right-angle backer respectively, and the two flatness detection units are arranged on the machine base and can independently do Z-direction movement on the machine base. The device is simple in structure, compared with high-precision inspection equipment such as a three-coordinate and imager, the technical requirement and cost are lower, measurement and evaluation of the boundary dimension and the flatness can be completed at a time after a part is clamped, and the device is higher in practicability in the batch production verification link.

Description

Technical Field

[0001] The utility model relates to a combined measuring device for the outer dimension and flatness of automatic flat parts. Background Art

[0002] In the existing detection (outer dimension and flatness) process of rectangular flat parts, generally a high-precision image measuring instrument or a coordinate measuring device is adopted. The former cannot detect the flatness of flat parts, while the latter has a high equipment cost and high technical requirements for operators. If the operator makes an operation error, remeasurement is required, and the technical sampling points of parts with different sizes can only be realized manually. Summary of the Invention

[0003] The utility model provides a combined measuring device for the outer dimension and flatness of automatic flat parts to solve the problems existing in the above-mentioned prior art.

[0004] The technical solution adopted by the utility model is as follows:

[0005] A combined measuring device for the outer dimension and flatness of automatic flat parts includes a machine base, a vacuum adsorption platform, displacement sensors, a flatness detection unit and a right-angle backrest. The vacuum adsorption platform is horizontally arranged on the machine base and can move in the X direction and the Y direction on the machine base. The right-angle backrest is fixedly connected to the vacuum adsorption platform. Two displacement sensors are respectively arranged on the movement paths of the X direction and the Y direction of the vacuum adsorption platform. The measuring heads of the two displacement sensors are respectively facing two side edges of the right-angle backrest. Two flatness detection units are arranged on the machine base and can independently move in the Z direction on the machine base.

[0006] Further, two Z-axis movement mechanisms are arranged on the machine base, and the two flatness detection units are respectively arranged on the two Z-axis movement mechanisms.

[0007] Further, the flatness detection unit includes a horizontal air cylinder, a linkage body, rollers, a transmission wheel and an encoder. The horizontal air cylinder is fixed at the Z-axis lifting free end of the Z-axis movement mechanism. The linkage body is vertically inserted on the air cylinder shaft of the horizontal air cylinder. The rollers are rotatably connected to the linkage body. The two transmission wheels are respectively connected to the linkage body and the encoder, and the two transmission wheels are meshed with each other.

[0008] Further, the linkage body includes a first insertion rod, a second insertion rod and a connection block. The first insertion rod and the second insertion rod are both vertically arranged and are fixedly connected through the connection block. The first insertion rod is inserted on the air cylinder shaft of the horizontal air cylinder. The roller is rotatably connected to the bottom end of the first insertion rod. One of the transmission wheels is rotatably connected to the top end of the second insertion rod.

[0009] Further, an X-axis movement mechanism and a Y-axis movement mechanism are arranged on the machine base, and the Y-axis movement mechanism is arranged on the X-axis movement mechanism.

[0010] Furthermore,

[0011] The utility model has the following beneficial effects:

[0012] The utility model has a simple structure. Compared with high-precision inspection equipment such as coordinate measuring machines and image measuring instruments, the technical requirements and costs are lower. It can complete the measurement and evaluation of the outer dimensions and flatness at one time after the parts are clamped, and has higher practicability in the batch production inspection link. Description of the Drawings

[0013] Figure 1 It is a structural diagram of the utility model.

[0014] Figure 2 It is a structural diagram after removing the vacuum adsorption platform.

[0015] Figure 3 It is a structural diagram of the flatness detection unit. Specific Embodiments

[0016] The following further describes the utility model with reference to the drawings.

[0017] As Figures 1 to 3 , a combined measuring device for the outer dimensions and flatness of automatic flat parts of the utility model includes a machine base 1, a vacuum adsorption platform 2, a displacement sensor 3, a flatness detection unit 4, and a right-angle backing 5. The vacuum adsorption platform 2 is horizontally arranged on the machine base 1 and can move in the X and Y directions on the machine base 1. The right-angle backing 5 is fixedly connected to the vacuum adsorption platform 2. Two displacement sensors 3 are respectively arranged on the movement paths of the X and Y directions of the vacuum adsorption platform 2. The measuring heads of the two displacement sensors 3 are respectively facing two side edges of the right-angle backing 5. Two flatness detection units 4 are arranged on the machine base 1 and can independently move in the Z direction on the machine base 1.

[0018] The displacement sensor 3 is a Keyence displacement sensor. When measuring the outer dimensions of flat parts, first measure the distances between the two side edges of the right-angle backing 5 through the two displacement sensors 3, and then place the flat part on the vacuum adsorption platform 2. The flat part is attached to the two side edges of the right-angle backing 5, and then turn on the switch of the vacuum adsorption platform 2 to fix the flat part on the vacuum adsorption platform 2 by negative pressure to prevent the flat part from being displaced due to external factors during the movement. If the weight of the flat part is heavy enough, the switch of the vacuum adsorption platform 2 can be not turned on, and the self-gravity of the flat part can be used to prevent the displacement of the flat part. Then the two displacement sensors 3 measure the distances between the corresponding sides of the flat part, and thus calculate the length and width dimensions of the flat part.

[0019] An X-axis motion mechanism, a Y-axis motion mechanism and a Z-axis motion mechanism are provided on the machine base 1. The Y-axis motion mechanism is arranged on the X-axis motion mechanism. The X-axis motion mechanism and the Y-axis motion mechanism cooperate to realize the X-direction and Y-direction motions of the vacuum adsorption platform 2. Two flatness detection units 4 are respectively arranged on the two Z-axis motion mechanisms, and each flatness detection unit 4 is driven by the Z-axis motion mechanism to make a Z-direction motion alone.

[0020] Proximity switches are arranged on the X-direction and Y-direction motion paths of the vacuum adsorption platform, and are used for displacement control of the vacuum adsorption platform.

[0021] The X-axis motion mechanism, the Y-axis motion mechanism and the Z-axis motion mechanism in the present utility model can adopt a driving mechanism composed of a cylinder and a slide rail, or a driving mechanism driven by an electric lead screw.

[0022] The flatness detection unit 4 includes a horizontal cylinder 41, a linkage body 42, a roller 43, a transmission wheel and an encoder 44. The linkage body 42 includes a first plug rod 421, a second plug rod 422 and a connecting block 423. The horizontal cylinder 41 is fixed at the Z-axis lifting free end of the Z-axis motion mechanism. The first plug rod 421 and the second plug rod 422 are both vertically arranged, and the two are fixedly connected through the connecting block 423. The first plug rod 421 is inserted into the cylinder shaft of the horizontal cylinder 41. The roller 43 is rotatably connected to the bottom end of the first plug rod 421. One of the transmission wheels is rotatably connected to the top end of the second plug rod 422, and the other transmission wheel is arranged on the output shaft of the encoder 44. The two transmission wheels are meshed with each other.

[0023] The present utility model calculates the flatness based on the four-point measurement method. When measuring the flatness of a flat part, after the Z-axis motion mechanism drives the roller 43 to contact the upper end surface of the flat part, the cylinder shaft of the horizontal cylinder 41 horizontally extends to drive the overall displacement of the linkage body 42. The roller 43 walks a certain distance on the upper end surface of the flat part. During the walking process, according to the change of the flatness of the flat part, the overall linkage body 42 moves up and down, and finally the displacement amount is fed back to the encoder, and the encoder reads the data to complete the thickness and flatness detection. In this way, each flatness detection unit 4 measures two areas. Then, the flatness is calculated according to the steps of the four-point measurement method. The four-point measurement method is a common method in the field of mechanical measurement, so the content steps of the present application will not be elaborated here.

[0024] The above are only the preferred embodiments of the present utility model. It should be noted that for those of ordinary skill in the art in this technical field, several improvements can be made without departing from the principle of the present utility model, and these improvements should also be regarded as the protection scope of the present utility model.

Claims

1. An automatic combined measuring device for the external dimensions and flatness of flat-panel parts, characterized in that: It includes a machine base (1), a vacuum adsorption platform (2), a displacement sensor (3), a flatness detection unit (4) and a right-angle backrest (5). The vacuum adsorption platform (2) is horizontally arranged on the machine base (1) and can move in the X and Y directions on the machine base (1). The right-angle backrest (5) is fixedly connected to the vacuum adsorption platform (2). Two displacement sensors (3) are respectively arranged on the movement paths of the vacuum adsorption platform (2) in the X and Y directions. The measuring heads of the two displacement sensors (3) are respectively facing two side edges of the right-angle backrest (5). Two flatness detection units (4) are arranged on the machine base (1) and can independently move in the Z direction on the machine base (1).

2. The combined measuring device for the external dimensions and flatness of automatic flat parts as described in claim 1, wherein: Two Z-axis movement mechanisms are provided on the machine base (1), and the two flatness detection units (4) are respectively arranged on the two Z-axis movement mechanisms.

3. The combined measuring device for the external dimensions and flatness of automatic flat parts according to claim 2, characterized in that: The flatness detection unit (4) includes a horizontal cylinder (41), a linkage body (42), a roller (43), a transmission wheel and an encoder (44). The horizontal cylinder (41) is fixed at the free end of the Z-axis lifting of the Z-axis movement mechanism. The linkage body (42) is vertically inserted on the cylinder shaft of the horizontal cylinder (41). The roller (43) is rotatably connected to the linkage body (42). Two transmission wheels are respectively connected to the linkage body (42) and the encoder (44), and the two transmission wheels are meshed with each other.

4. The combined measuring device for the outer dimensions and flatness of automatic flat parts according to claim 3, characterized in that: The linkage body (42) includes a first insertion rod (421), a second insertion rod (422) and a connection block (423). The first insertion rod (421) and the second insertion rod (422) are both vertically arranged and are fixedly connected by the connection block (423). The first insertion rod (421) is inserted on the cylinder shaft of the horizontal cylinder (41). The roller (43) is rotatably connected to the bottom end of the first insertion rod (421). One of the transmission wheels is rotatably connected to the top end of the second insertion rod (422).

5. The combined measuring device for the external dimensions and flatness of automatic flat parts as described in claim 1, characterized in that: An X-axis movement mechanism and a Y-axis movement mechanism are provided on the machine base (1), and the Y-axis movement mechanism is arranged on the X-axis movement mechanism.

6. The combined measuring device for the external dimensions and flatness of automatic flat parts as described in claim 1, wherein: Proximity switches are provided on the movement paths of the vacuum adsorption platform (2) in the X and Y directions.

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