Grinding machine end face positioning device

Abstract

The utility model relates to a grinding machine end face positioning device which comprises an installation base. One end of the swing arm is rotationally connected to the mounting seat, and the other end of the swing arm is provided with a switch probe; the driving structure is mounted on the mounting seat and is used for driving the swing arm to rotate; when the swing arm is in an initial state, the switch probe is located in a non-working area. The driving structure drives the swing arm to rotate to be inclined, so that the switch probe enters and is kept in the working area; and in a natural state, the swing arm is vertical under the action of gravity. When the driving structure fails, the swing arm returns to the initial state again under the action of gravity, and the effect of inhibiting further expansion of loss is achieved.

Description

Technical Field

[0001] The present application relates to the field of numerically controlled grinding machines, and in particular to an end face positioning device for a grinding machine. Background Art

[0002] As high-precision processing equipment, CNC grinding machines play an important role in the fields of machinery manufacturing, mold processing, aerospace, etc. In the processing of CNC grinding machines, the end face positioning device is one of the key components to ensure processing accuracy and efficiency. The end face positioning device is used to measure the end face position of the workpiece, so as to determine the initial position of the grinding wheel during rapid feed grinding.

[0003] At present, the end face positioning device of the grinding machine mainly adopts a combination of sensor technology and mechanical transmission technology. Mechanical transmission technology generally adopts a suspended sliding method, and sensor technology generally adopts a switch probe. When it is necessary to detect the end face position of the workpiece, the end face positioning device slides downward so that the switch probe at the end of the end face positioning device is located in the axial feed direction of the workpiece, and then the workpiece and the switch probe move relative to each other until the switch probe contacts the end face of the workpiece. After the switch probe is subjected to force, the signal is transmitted back to determine the position of the end face of the workpiece. After the measurement is completed, the end face positioning device slides up to leave the working area.

[0004] However, in actual practical use, the mechanical transmission part of the end face positioning device may fail. Once failure occurs, the end face positioning device will slide down under the action of gravity, causing the end face positioning device to enter the working area, which is also the area where the grinding wheel grinds the workpiece, causing damage to the switch probe at the end of the end face positioning device, resulting in increased loss costs. Utility Model Content

[0005] In order to prevent the loss from further increasing after the mechanical transmission part of the end face positioning device fails, the present application provides a grinding machine end face positioning device, which adopts the following technical solution:

[0006] A grinding machine end face positioning device comprises: a mounting seat; a swing arm, one end of the swing arm is rotatably connected to the mounting seat, and the other end is equipped with a switch probe; a driving structure, the driving structure is installed on the mounting seat and is used to drive the swing arm to rotate; wherein, in the initial state of the swing arm, the switch probe is located in a non-working area; the driving structure drives the swing arm to rotate and tilt, so that the switch probe enters and remains in the working area; in the natural state, the swing arm is vertical under the action of gravity.

[0007] By adopting the above technical solution, in the initial state, the swing arm is in a vertical state, and the switch probe is located in the non-working area. When it is necessary to measure the end face position of the workpiece, the drive structure starts to work, and the swing arm rotates to a tilted state. At this time, the switch probe enters and remains in the working area, and the end face position of the workpiece can be accurately measured. When the end face positioning device fails, such as when the drive structure fails, under the action of gravity, the swing arm returns to the initial state, that is, the swing arm is in a vertical state. At this time, the swing arm and the switch probe are located in the non-working area and will not interfere with other components of the grinding process of the grinder. Therefore, the switch probe will not be damaged due to the failure of the drive structure. On the one hand, the further expansion of the loss is suppressed, and on the other hand, the end face positioning device will not interfere with the operation of other components of the grinder.

[0008] Optionally, the driving structure includes a rotating shaft rotatably connected to the mounting seat, one end of the rotating shaft is fixedly connected to the swing arm, and the driving structure also includes a driving member that drives the rotating shaft to rotate.

[0009] By adopting the above technical solution, the driving member drives the rotating shaft to rotate, so as to drive the swing arm to rotate.

[0010] Optionally, the rotating shaft is coaxially fixedly connected with an outer gear ring, the driving structure also includes a rack meshing with the outer gear ring, and the driving member is used to drive the rack to move to drive the rotating shaft to rotate.

[0011] By adopting the above technical solution, the driving member drives the rack to move, and the ring gear meshing with the rack rotates, thereby driving the rotating shaft to rotate, thereby driving the swing arm.

[0012] Optionally, the driving member is a cylinder, a linear motor or a hydraulic cylinder.

[0013] By adopting the above technical solution, there is generally no self-locking structure in the cylinder, linear motor or oil cylinder drive component. When the drive component fails, the drive component can be reversed under the action of the gravity of the swing arm to leave the working area.

[0014] Optionally, the mounting base is equipped with a detection structure for detecting the swing arm posture.

[0015] Optionally, the detection structure includes a first proximity switch and a second proximity switch installed on a mounting base, and the rotating shaft is fixedly connected with a baffle for triggering the first proximity switch and the second proximity switch; when the swing arm is in a vertical state, the baffle triggers the first proximity switch; when the swing arm is tilted and the switch probe is located in a working area, the baffle triggers the second proximity switch.

[0016] By adopting the above technical solution, the triggering conditions of the first proximity switch and the second proximity switch are utilized to monitor the posture (vertical or tilted) of the swing arm to determine whether the switch probe is located in the working area or the non-working area.

[0017] Optionally, the swing arm includes a connecting section and an extending section. One end of the connecting section is fixedly connected to the rotating shaft, and the other end is perpendicularly arranged with respect to the extending section. When the extending section is in a vertical state, the extending section is in a horizontal state.

[0018] Optionally, the mounting base is fixedly connected with a positioning block, and the positioning block is threadedly connected with an adjusting bolt. One end of the adjusting bolt extends out of the positioning block for limiting the swing arm. The adjusting bolt is inclined. When the swing arm is inclined and the switch probe is located within the working area, the connecting section abuts against the adjusting bolt.

[0019] By adopting the above technical solution, the angle of the swing arm when it is inclined is adjusted by the adjusting bolt, thereby adjusting the position of the switch probe.

[0020] Optionally, the mounting base is installed on the rotary table of the grinding wheel of the grinding machine, and the rotating shaft is arranged parallel to the rotation axis of the grinding wheel.

[0021] In summary, the present application includes at least one of the following beneficial technical effects:

[0022] 1. When it is necessary to measure the position of the workpiece end face, the swing arm is inclined. When the driving structure fails, under the action of gravity, the swing arm returns to the initial state, that is, the swing arm is in a vertical state. At this time, the swing arm and the switch probe are located in the non-working area and will not interfere with other components during the grinding process of the grinding machine, effectively suppressing the further expansion of losses.

[0023] 2. A detection structure is adopted to monitor the position of the switch probe. Through the triggering situation of the proximity switch, the states of the swing arm and the probe can be accurately judged, further improving the safety and reliability of the device. Description of the Drawings

[0024] Figure 1 is a schematic structural diagram of the positioning device in the embodiment.

[0025] Figure 2 is a schematic cross-sectional view of the driving structure in the embodiment.

[0026] Figure 3 is the embodiment for showing Figure 1 A perspective view of

[0027] Figure 4 is a schematic diagram of the detection structure in the embodiment.

[0028] Description of reference numerals: 100, mounting base; 101, positioning block; 102, adjusting bolt; 200, swing arm; 201, switch probe; 210, connecting section; 220, extension section; 300, driving structure; 310, rotating shaft; 320, driving member; 330, external gear ring; 340, rack; 400, detection structure; 410, first proximity switch; 420, second proximity switch; 430, baffle; 440, mounting plate. Detailed implementation manners

[0029] The following further elaborates on this application Figures 1-4 in conjunction with the accompanying drawings.

[0030] This embodiment discloses a grinding machine end face positioning device. Referring to Figure 1 the drawings, this device mainly includes a mounting base 100, a swing arm 200, and a driving structure 300.

[0031] First of all, the mounting base 100 serves as the foundation of the entire positioning device and is firmly installed on the grinding machine. One end of the swing arm 200 is connected to the mounting base 100, and the swing arm 200 can rotate under the action of the driving structure 300. A switch probe 201 is installed at the end of the swing arm 200 far from the rotation center, and this probe is used to play a role when measuring the position of the workpiece end face.

[0032] The driving structure 300 is installed on the mounting base 100, and its output end is connected to the swing arm 200. In the initial state and natural state, the switch probe 201 is located in the non-working area, and at this time, the swing arm 200 is in a vertical state under the action of gravity. When it is necessary to measure the position of the workpiece end face, the driving structure 300 starts to work, driving the swing arm 200 to rotate, so that the switch probe 201 enters the working area. At this time, the swing arm 200 is in an inclined state, and the switch probe 201 can then measure the position of the workpiece end face.

[0033] Referring to Figure 2 the drawings, the driving structure 300 includes a rotating shaft 310 and a driving member 320 for driving the rotating shaft 310 to rotate.

[0034] Specifically, the rotating shaft 310 is rotatably connected to the mounting base 100 through a bearing, and one end is fixedly connected to the swing arm 200. An external gear ring 330 is coaxially and fixedly connected to the rotating shaft 310. A rack 340 is slidably connected to the mounting base 100, and the rack 340 meshes with the external gear ring 330. The driving member 320 pushes the rack 340 to move along its length direction. Because the external gear ring 330 and the rack 340 mesh, the rotating shaft 310 also rotates accordingly to drive the swing arm 200 to rotate. The driving member 320 can be a cylinder, a linear motor, or an oil cylinder. In this embodiment, the driving member 320 adopts a cylinder.

[0035] Referring to Figure 3 and Figure 4, in order to ensure the posture of the swing arm 200 and the position of the switch probe 201, a detection structure 400 is further provided on the mounting base 100 in this embodiment. The detection structure 400 includes a first proximity switch 410 and a second proximity switch 420. The mounting base 100 is fixedly connected with a mounting plate 440 by bolts. The mounting plate 440 is inclined. The first proximity switch 410 and the second proximity switch 420 are fixedly connected to the mounting plate 440 and are arranged obliquely.

[0036] Referring to Figure 3 and Figure 4 , the detection structure 400 further includes a baffle 430. One end of the baffle 430 is fixedly connected with the end of the rotating shaft 310 far from the swing arm 200 by bolts. When the swing arm 200 rotates to different positions, the baffle 430 will trigger different proximity switches accordingly. Specifically, when the swing arm 200 is in a vertical state, the baffle 430 triggers the first proximity switch 410 ( Figure 4 the state shown); and when the swing arm 200 is inclined and the switch probe 201 enters the working area, the baffle 430 triggers the second proximity switch 420.

[0037] Referring to Figure 1 , the swing arm 200 in this embodiment includes two parts, a connecting section 210 and an extending section 220, and the two parts are integrally formed. One end of the connecting section 210 is sleeved on the rotating shaft 310 and the two are fixedly connected. The other end of the connecting section 210 is perpendicular to the extending section 220. Therefore, when the extending section 220 is in a vertical state, the connecting section 210 is in a horizontal position.

[0038] A positioning block 101 is also fixedly connected to the mounting base 100, and an adjusting bolt 102 is threadedly connected to the positioning block 101. One end of the adjusting bolt 102 extends out of the positioning block 101 and is used to limit the swing arm 200.

[0039] Specifically, the adjusting bolt 102 is inclined. When the swing arm 200 is inclined and the switch probe 201 is located within the working area, the connecting section 210 will abut against the adjusting bolt 102. By rotating the adjusting bolt 102, the inclination angle of the swing arm 200 and the working position of the switch probe 201 can be finely adjusted. This design not only improves the applicability and flexibility of the positioning device, but also further enhances the accuracy and reliability of the processing process.

[0040] The implementation principle of this embodiment is as follows: In the initial state, the swing arm 200 is in a vertical state, and the switch probe 201 is located in the non-working area. When it is necessary to measure the position of the workpiece end face, the driving structure 300 starts to work. The rotation shaft 310 is rotated by the driving of the driving member 320, and then the swing arm 200 is driven to rotate to an inclined state. At this time, the switch probe 201 enters the working area, and the position of the workpiece end face can be accurately measured. When the driving structure 300 fails, under the action of gravity, the swing arm 200 returns to the initial state again, that is, the swing arm 200 is in a vertical state. At this time, the swing arm 200 and the switch probe 201 are located in the non-working area and will not interfere with other components during the grinding process of the grinding machine, effectively suppressing the further expansion of losses.

[0041] The above are all the preferred embodiments of this application. The protection scope of this application is not limited accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of this application should be covered within the protection scope of this application.

Claims

1. A grinding machine end face positioning device, characterized in that: include: Mounting seat (100); A swing arm (200), one end of the swing arm (200) being rotatably connected to the mounting seat (100), and the other end of the swing arm (200) being mounted with a switch probe (201); A driving structure (300), the driving structure (300) is mounted on the mounting seat (100) and is used to drive the swing arm (200) to rotate; Wherein, in the initial state of the swing arm (200), the switch probe (201) is located in a non-working area; the drive structure (300) drives the swing arm (200) to rotate and tilt, so that the switch probe (201) enters and remains in the working area; in the natural state, the swing arm (200) is vertical under the action of gravity and returns to the non-working area.

2. The end face positioning device for a grinding machine according to claim 1, characterized in that: The driving structure (300) comprises a rotating shaft (310) rotatably connected to the mounting seat (100), one end of the rotating shaft (310) being fixedly connected to the swing arm (200), and the driving structure (300) further comprises a driving member (320) for driving the rotating shaft (310) to rotate.

3. The end face positioning device for a grinding machine according to claim 2, characterized in that: The rotating shaft (310) is coaxially fixedly connected to an outer gear ring (330), the driving structure (300) further comprises a rack (340) meshing with the outer gear ring (330), and the driving member (320) is used to drive the rack (340) to move so as to drive the rotating shaft (310) to rotate.

4. The end face positioning device for a grinding machine according to claim 3, characterized in that: The driving member (320) is a cylinder, a linear motor or an oil cylinder.

5. The end face positioning device for a grinding machine according to claim 2, characterized in that: The mounting seat (100) is mounted with a detection structure (400) for detecting the posture of the swing arm (200).

6. The end face positioning device for a grinding machine according to claim 5, characterized in that: The detection structure (400) comprises a first proximity switch (410) and a second proximity switch (420) mounted on a mounting seat (100); the rotating shaft (310) is fixedly connected with a baffle (430) for triggering the first proximity switch (410) and the second proximity switch (420); when the swing arm (200) is in a vertical state, the baffle (430) triggers the first proximity switch (410); when the swing arm (200) is tilted and the switch probe (201) is located in a working area, the baffle (430) triggers the second proximity switch (420).

7. The end face positioning device for a grinding machine according to claim 1, characterized in that: The swing arm (200) comprises a connecting section (210) and an extending section (220); one end of the connecting section (210) is fixedly connected to the rotating shaft (310), and the other end is arranged vertically with the extending section (220); when the extending section (220) is in a vertical state, the extending section (220) is in a horizontal state.

8. The end face positioning device for a grinding machine according to claim 7, characterized in that: The mounting seat (100) is fixedly connected to a positioning block (101), the positioning block (101) is threadedly connected to an adjusting bolt (102), one end of the adjusting bolt (102) extends out of the positioning block (101) for limiting the position of the swing arm (200), the adjusting bolt (102) is arranged in an inclined manner, and when the swing arm (200) is inclined and the switch probe (201) is located in the working area, the connecting section (210) abuts against the adjusting bolt (102).

9. A grinding machine end face positioning device according to any one of claims 2 to 6, characterized in that: The mounting seat (100) is mounted on a rotary table of a grinding wheel of a grinding machine, and the rotating shaft (310) is arranged parallel to the rotation axis of the grinding wheel.

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