Inner diameter size and roundness detection machine

Abstract

The utility model relates to the technical field of machine tool accessories, in particular to an inner diameter size and roundness detection machine. In the production of bearing rings, especially inner rings, the problems of product deformation and end face bumping easily caused by the detection of the inner diameter size and ovality of a product of which the height is less than 8mm and the single-face wall thickness is less than 1mm are solved. An inner diameter size and roundness detection machine comprises a workpiece and a rack, and the rack is provided with a measuring mechanism and a feeding mechanism. The measuring mechanism comprises a base, a measuring frame bottom plate, a left measuring head and a right measuring head, and the left measuring head and the right measuring head are used for measuring the inner diameter or the roundness; the left measuring head and the right measuring head are in sliding connection with the measuring claw folding and unfolding guide plate, and the measuring claw folding and unfolding guide plate drives the left measuring head and the right measuring head to be unfolded for detection. The device is simple to operate and debug, reliable in action and high in response speed.

Description

Technical Field

[0001] The utility model relates to the technical field of machine tool accessories, and more particularly to an inner diameter size and roundness detection machine. Background Art

[0002] In the production of bearing rings, especially inner rings, the detection of the inner diameter is particularly important. In the hydraulic lathe processing production line, the requirements for the inner diameter size and ovality detection of products with short ring height (less than 8mm) and thin single-sided wall thickness (less than 1mm) are met. The ordinary hydraulic loading and clamping methods are prone to cause product deformation and end face damage. Utility Model Content

[0003] The purpose of the utility model is to provide an inner diameter size and roundness detection machine with simple operation, reliable action and fast response speed in view of the shortcomings of the existing technology.

[0004] An inner diameter size and roundness detection machine includes a workpiece and a frame. The workpiece is sucked or released by an electromagnetic chuck on a main shaft. A measuring mechanism and a feeding mechanism are provided on the frame.

[0005] The measuring mechanism includes a base mounted on a machine frame, a measuring frame base plate above the base, a first slider assembly mounted on the measuring frame base plate, a first measuring head mounted on the first slider assembly, and a first measuring head driven by a first pneumatic cylinder. The first measuring head is provided with a second slider assembly on the workpiece side, and a left probe and a right probe are provided on either side of the second slider assembly for measuring inner diameter or roundness. The left and right probes are slidably connected to a measuring claw retraction and extension guide plate, which is driven by a second pneumatic cylinder. When the second cylinder moves forward, the measuring claw retraction and extension guide plate drives the left and right probes to open, and when the second cylinder retracts, the left and right probes return to their original positions. A displacement sensor is provided on one side of the left or right probe to read data used to retract and extend the left and right probes. This practical device is simple and easy to debug, using the measuring claw retraction and extension guide plate to control the retraction and extension of the probes. It features simple operation and debugging, reliable operation, and fast response speed, and can meet the tempo and inspection requirements of automated production lines for automotive parts.

[0006] As a further improvement and supplement to the above solution, the present invention also includes the following additional technical features:

[0007] The loading mechanism includes a loading panel and a discharge panel, with a feed channel and discharge rod on the loading panel, and a discharge channel on the discharge panel. The discharge rod is driven by a fourth cylinder. An "NG" door is located behind the discharge panel and driven by an "NG" cylinder to remove rejected parts. A pusher block, driven by a third cylinder, is flanked by a loading stopper and a pressure block, each with a needle cylinder attached. A stopper is located on either side of the loading stopper and pressure block, and a photoelectric switch is located on the outside of the pressure block to detect the presence of workpieces. This rational structure ensures stable and reliable loading and unloading.

[0008] A first tension spring is provided between the measuring claw retraction and extension guide plate and the retraction and extension cylinder fixing plate, which has a reasonable structure, performs auxiliary stretching for forward and backward movement, and makes the action more reliable.

[0009] The left and right measuring heads are respectively provided with second tension springs on both sides. The structure is reasonable, and auxiliary tension is performed during contraction and expansion, making the operation more reliable.

[0010] The main shaft is powered by a stepping motor, which is positioned correctly to ensure the position requirements of the workpiece during detection.

[0011] A third slider assembly is provided between the base and the bottom plate of the test frame, and a push rod is used to adjust the up and down position of the bottom plate of the test frame, thereby ensuring the position requirements during testing.

[0012] The measuring claw retraction and extension guide plate is provided with two symmetrical, open special-shaped grooves, so that the positions of the left measuring head and the right measuring head are reliable and stable.

[0013] The following beneficial effects can be achieved by using this utility model: the utility model is simple and easy to debug, and the retraction and extension of the measuring head is controlled by combining the retraction and extension guide plate of the measuring claw with the tension spring. It has the characteristics of simple operation and debugging, reliable action, and fast response speed, and can meet the beat requirements and detection requirements of the automatic production line of lathe parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural diagram of the present utility model.

[0015] Figure 2 It is the main view of the present utility model.

[0016] Figure 3 It is a left view of the present utility model.

[0017] Figure 4 It is a structural diagram of one side of the measuring mechanism 7 in the present invention.

[0018] Figure 5 It is a structural diagram of the other side of the measuring mechanism 7 in the present invention.

[0019] Figure 6 It is a structural diagram of one side of the feeding mechanism 8 in the present invention.

[0020] Figure 7 It is a structural diagram of the other side of the feeding mechanism 8 in the present invention.

[0021] Figure 8 It is a structural diagram of the measuring claw retraction and extension guide plate 710 in the present invention.

[0022] Figure 9 It is a structural schematic diagram of the utility model when the left and right measuring heads are opened.

[0023] Figure 10 It is a schematic structural diagram of the utility model when the left and right measuring heads are retracted. DETAILED DESCRIPTION

[0024] The specific implementation of the present utility model is described in detail below with reference to the accompanying drawings.

[0025] like Figure 1-10 As shown, the utility model is an inner diameter size and roundness detection machine.

[0026] The inner diameter and roundness inspection machine described in this embodiment includes a workpiece 1 and a frame 6. The workpiece 1 is sucked or released by an electromagnetic chuck 3 on a spindle 4, and the workpiece 1 is attached to a backing 2 of the electromagnetic chuck 3. The frame 6 is provided with a measuring mechanism 7 and a loading mechanism 8.

[0027] The measuring mechanism 7 includes a base 701 mounted on the frame 6, a measuring frame base plate 715 above the base 701, a first slider assembly 703 provided on the measuring frame base plate 715, a first measuring head 705 provided on the first slider assembly 703, the first measuring head 705 being driven by a first cylinder 714, and the first cylinder 714 being fixed to the measuring frame base plate 715 via a first cylinder seat 713; the first cylinder 714 drives the left measuring head 706 and the right measuring head 707 forward or backward, and performs inner hole or roundness detection when moving forward.

[0028] The first measuring head 705 is provided with a second slider assembly 702 on the side of the workpiece 1, and a left probe 706 and a right probe 707 are respectively provided on both sides of the second slider assembly 702 for measuring the inner diameter or roundness; the left probe 706 and the right probe 707 are slidably connected to the measuring claw retraction and extension guide plate 710, and the measuring claw retraction and extension guide plate 710 is driven by a second cylinder 711. The second cylinder 711 is fixed on the retraction and extension cylinder fixing plate 712. When the second cylinder 711 moves forward, the measuring claw retraction and extension guide plate 710 drives the left probe 706 and the right probe 707 to open, and the second cylinder 711 contracts, and the left probe 706 and the right probe 707 return to their original position; a displacement sensor 708 is provided on one side of the left probe 706 or the right probe 707 for reading data used for retraction and extension of the left probe 706 and the right probe 707. The measuring claw retraction and extension guide plate 710 is engaged by the second measuring base 709 , and the second measuring base 709 is arranged on the opposite side of the workpiece 1 on the first measuring base 705 .

[0029] Furthermore, the loading mechanism 8 includes a loading panel 802 and a discharge panel 808, which are fixed to the frame 6. The loading panel 802 includes a feed channel 804 and a discharge rod 801, and the discharge panel 808 includes a discharge channel 806. Workpieces 1 enter through the feed channel 804. The discharge rod 801 is driven by a fourth cylinder 814 and pressed against the loading panel 802 by a discharge rod pressure plate 815. After inspection, workpieces 1 exit through the discharge channel 806. The fourth cylinder 814 and discharge rod pressure plate 815 are located on the back of the loading panel 802. An "NG" door 816 is located behind the discharge panel 808, driven by an "NG" cylinder 817, for removing rejected parts. First and second supports 807 and 803 are located on the left and right undersides of the workpiece 1 to support it.

[0030] Pusher block 812, driven by a third air cylinder 813, is flanked by a loading stop 811 and a pressure block 810. A needle-type air cylinder 805 is mounted on the pressure block 810 to drive it. A stop block 809 is mounted on one side of the loading stop 811 and the pressure block 810 to hold the workpiece 1 in place. A photoelectric switch 818 is located on the outside of the pressure block 810 to detect the presence of a workpiece.

[0031] The baffle 811 and the clamping block 810 are set in the middle and lower part of the workpiece 1. The workpiece 1 entering from the feed channel 804 enters the pushing block 812 below the baffle 811 and the clamping block 810, and is driven by the third cylinder 813 to rise to the electromagnetic suction cup 3. The workpiece 1 is attached to the backrest 2 of the electromagnetic suction cup 3 and is inspected.

[0032] Furthermore, a first tension spring 717 is provided between the measuring claw retracting and extending guide plate 710 and the retracting and extending cylinder fixing plate 712 . The retracting and extending cylinder fixing plate 712 is provided on the side of the first measuring base 705 .

[0033] Furthermore, a second tension spring 704 is provided on both sides of the left probe 706 and the right probe 707. One side of the second tension spring 704 is connected via a pin 719 on a stopper 718. The stopper 718 is provided below both sides of the second slider assembly 702.

[0034] Furthermore, the main shaft 4 is powered by a stepping motor 5 .

[0035] Furthermore, a third slider assembly 720 is provided between the base 701 and the measuring frame bottom plate 715 , and a push rod 716 is used to adjust the upper and lower positions of the measuring frame bottom plate 715 .

[0036] Furthermore, the stylus jaw retraction and extension guide plate 710 is provided with two symmetrical, open, special-shaped slots 7101. These slots are larger on the outside and smaller on the inside, with a circular transition in the middle. A waist-shaped slot 7102 is located in the middle of the stylus jaw retraction and extension guide plate 710. Screws pass through the stylus jaw retraction and extension guide plate 710 and the waist-shaped slot 7102 to guide the stylus jaw retraction and extension guide plate 710 during operation. During testing, the left and right stylus heads 706 and 707 are pressed together within the small ends of the special-shaped slots 7101 for secure engagement. When not testing, the left and right stylus heads 706 and 707 are pressed together within the large ends of the special-shaped slots 7101.

[0037] When this inner diameter and roundness detection machine is used, its action flow is as follows:

[0038] Feeding in - filling in - excitation, detection spindle rotation start - filling retracting - feeding back - detection (test frame bottom plate in - left and right probes open - read 180° rotation sensor data, judge according to the test results: test out of tolerance, NG door open; test qualified, NG door closed - probe retracted - test retracted) - demagnetization - unloading

[0039] The workpiece 1 enters the push block 812 from the feed channel 804 and is driven by the third cylinder 813 to rise onto the electromagnetic chuck 3. The electromagnetic chuck 3 is magnetized and the detection spindle is started to rotate for detection.

[0040] Simultaneously, the first cylinder 714 drives the left and right probes 706 and 707, along with the probe claw retraction and extension guide plate 710, forward into the inspection station. Then, the second cylinder 711 moves forward, opening the left and right probes 706 and 707 for inspection. If the inspection passes, the fourth cylinder 814 drives the discharge rod 801 diagonally upward, discharging the material from the discharge channel 806.

[0041] If the inspection fails, the NG cylinder 817 drives the NG door 816 to open and send the workpiece 1 out.

[0042] The above are preferred embodiments of the present invention and do not limit the protection scope of the present invention. Any modifications and improvements made by those skilled in the art based on the design ideas of the present invention should be considered as within the protection scope of the present invention.

Claims

1. An inner diameter size and roundness detection machine, comprising a workpiece (1) and a frame (6), wherein the workpiece (1) is sucked or released by an electromagnetic chuck (3) on a spindle (4), and characterized in that: The frame (6) is provided with a measuring mechanism (7) and a feeding mechanism (8); The measuring mechanism (7) comprises a base (701) mounted on a frame (6), a measuring frame bottom plate (715) above the base (701), a first slider assembly (703) provided on the measuring frame bottom plate (715), a first measuring seat (705) provided on the first slider assembly (703), and the first measuring seat (705) driven by a first cylinder (714); a second slider assembly (702) provided on the side of the first measuring seat (705) on the workpiece (1), and a left probe (706) and a right probe (707) provided on both sides of the second slider assembly (702) for measuring the inner diameter or roundness; the left probe (70 6) The right probe (707) is slidably connected to the probe claw retraction guide plate (710), and the probe claw retraction guide plate (710) is driven by the second cylinder (711). When the second cylinder (711) moves forward, the probe claw retraction guide plate (710) drives the left probe (706) and the right probe (707) to open. When the second cylinder (711) contracts, the left probe (706) and the right probe (707) return to their original positions. A displacement sensor (708) is provided on one side of the left probe (706) or the right probe (707) for reading data used for retraction of the left probe (706) and the right probe (707).

2. The inner diameter and roundness detection machine according to claim 1, characterized in that: The loading mechanism (8) includes a loading panel (802) and a unloading panel (808), a feeding channel (804) and an unloading rod (801) on the loading panel (802), a unloading channel (806) on the unloading panel (808), and the unloading rod (801) is driven by a fourth cylinder (814); an NG door (816) is provided on the rear side of the unloading panel (808), which is driven by an NG cylinder (817) for Unloading of qualified parts; a pusher block (812) driven by a third cylinder (813); a loading baffle (811) and a pressing block (810) are respectively provided on both sides of the pusher block (812); a needle-shaped cylinder (805) is provided on the pressing block (810); a baffle block (809) is provided on one side of the loading baffle (811) and the pressing block (810); a photoelectric switch (818) is provided on the outside of the pressing block (810) for detecting whether a workpiece is present.

3. The inner diameter and roundness detection machine according to claim 1, characterized in that: A first tension spring (717) is provided between the measuring claw retraction and extension guide plate (710) and the retraction and extension cylinder fixing plate (712).

4. The inner diameter and roundness detection machine according to claim 1, characterized in that: Second tension springs (704) are respectively provided on both sides of the left measuring head (706) and the right measuring head (707).

5. The inner diameter and roundness detection machine according to claim 1, characterized in that: The main shaft (4) is powered by a stepping motor (5).

6. The inner diameter and roundness detection machine according to claim 1, characterized in that: A third slider assembly (720) is provided between the base (701) and the measuring frame bottom plate (715), and a push rod (716) is used to adjust the upper and lower positions of the measuring frame bottom plate (715).

7. The inner diameter and roundness detection machine according to claim 1, characterized in that: The measuring claw retraction and extension guide plate (710) is provided with two symmetrical, open special-shaped grooves (7101).

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