Cutter position detection structure

Abstract

The utility model relates to the field of machine tool accessories, in particular to a tool position detection structure which comprises a spindle, a driving part, a detection module and a control module, the spindle is used for mounting a tool, the driving part is used for driving the spindle to rotate, and the detection module is used for detecting the circumferential position of the spindle and outputting a position signal to the control module. The control module is used for controlling the driving part to rotate according to the position signal so that the main shaft can rotate by a set angle. And after boring is finished every time, the boring cutter is far away from the workpiece and moves the workpiece up and down. At the moment, the detection module outputs a position signal, the control module enables the main shaft to rotate by a set angle according to the position signal, then the blade of the boring cutter rotates to be away from the workpiece moving path, and the probability that the workpiece collides with the boring cutter is reduced.

Description

Technical Field

[0001] This application relates to the field of machine tool accessories, and particularly to a tool position detection structure. Background Art

[0002] Boring is a machining process mainly used for further processing of holes forged, cast or drilled to enlarge the hole diameter, improve the dimensional accuracy of the hole, reduce the surface roughness, and can better correct the deflection of the original hole axis.

[0003] During boring, the cutting edge of the boring tool is eccentric relative to the rotation axis of the boring tool. During the process of loading and unloading the workpiece, there may be a situation where the workpiece collides with the cutting edge of the boring tool, affecting the service life of the boring tool and the machining quality of the workpiece. Utility Model Content

[0004] In order to reduce the probability of collision between the workpiece and the boring tool, this application provides a tool position detection structure.

[0005] A tool position detection structure provided by this application adopts the following technical solutions:

[0006] A tool position detection structure includes a main shaft, a driving member, a detection module and a control module.

[0007] The main shaft is used for installing the tool.

[0008] The driving member is used to drive the main shaft to rotate.

[0009] The detection module is used to detect the circumferential position of the main shaft and output a position signal to the control module.

[0010] The control module is used to control the operation of the driving member according to the position signal so that the main shaft rotates a set angle.

[0011] By adopting the above technical solutions, after each boring process is completed, the boring tool moves away from the workpiece to load and unload the workpiece. At this time, the detection module outputs a position signal, and the control module rotates the main shaft a set angle according to the position signal, so that the cutting edge of the boring tool rotates away from the moving path of the workpiece, reducing the probability of collision between the workpiece and the boring tool.

[0012] Preferably, the detection module includes a connecting member and a sensor.

[0013] The connecting member is connected to one end of the main shaft.

[0014] The sensor is used to detect the circumferential position of the connecting member around the axis of the main shaft and output a position signal to the control module.

[0015] The other end of the main shaft is used for installing the tool.

[0016] By adopting the above technical solution, the tool and the connecting piece are both connected to the main shaft. By detecting the position of the connecting piece, the position of the tool can be indirectly detected. The detection module is far away from the tool, and the detection module will not affect the machining of the workpiece by the tool.

[0017] Preferably, a plurality of the connecting pieces are arranged at equal intervals along the circumferential direction of the main shaft.

[0018] By adopting the above technical solution, the detection range is increased to ensure that the position of the tool can be indirectly detected by detecting the position of the connecting piece.

[0019] Preferably, a positioning piece is further included.

[0020] The connecting piece has magnetism.

[0021] The magnetic force between the positioning piece and the connecting piece is an attractive force.

[0022] By adopting the above technical solution, the control module makes the main shaft rotate by a set angle. When the rotation speed of the main shaft is reduced to 0, the magnetic force between the positioning piece and the connecting piece helps the main shaft to stop more accurately at the target angle, so that the tool rotates away from the moving path of the workpiece.

[0023] Preferably, the positioning piece and the sensor are located on both sides of the main shaft.

[0024] By adopting the above technical solution, the influence of the positioning piece on the sensor is reduced.

[0025] Preferably, the detection module further includes an installation ring and a locking mechanism.

[0026] The installation ring is coaxially rotatably connected to the main shaft, and the connecting piece is connected to the installation ring.

[0027] The locking mechanism is used to lock the relative position between the installation ring and the main shaft.

[0028] By adopting the above technical solution, the relative position between the connecting piece and the tool can be accurately adjusted by rotating the installation ring, ensuring that the position of the tool can be indirectly detected by detecting the position of the connecting piece.

[0029] Preferably, the locking mechanism includes a screw rod and two nuts.

[0030] The screw rod is coaxially connected to the main shaft, and the installation ring is sleeved outside the screw rod.

[0031] The nuts are threadedly connected to the screw rod, and the installation ring is located between the two nuts.

[0032] By adopting the above technical solution, when the installation ring is adjusted to a proper position, the relative position between the installation ring and the main shaft can be locked by tightening the two nuts.

[0033] Preferably, the locking mechanism further includes two elastic pads.

[0034] The two elastic pads are located between the two nuts, and the mounting ring is located between the two elastic pads.

[0035] By adopting the above technical solution, when it is necessary to adjust the axial position between the mounting ring and the main shaft, one nut is stationary relative to the main shaft, and the other nut is tightened. Both elastic pads undergo elastic deformation, so that the axial displacement of the mounting ring is half of the axial displacement of the other nut, improving the adjustment accuracy.

[0036] Preferably, it further includes an interaction module.

[0037] The interaction module is used to output a tool change signal.

[0038] The control module is used to control the operation of the driving member according to the tool change signal and the position signal so that the main shaft rotates by a set angle.

[0039] By adopting the above technical solution, when it is necessary to change the tool, the operator operates on the interaction module, and the interaction module outputs a tool change signal. According to the tool change signal and the position signal, the main shaft rotates by a set angle, so that the tool rotates to be close to the operation area, facilitating the operator to change the tool.

[0040] In summary, the present application includes at least one of the following beneficial technical effects:

[0041] 1. After each boring process is completed, the boring tool moves away from the workpiece to load and unload the workpiece. At this time, the detection module outputs a position signal, and the control module makes the main shaft rotate by a set angle according to the position signal, so that the cutting edge of the boring tool rotates away from the moving path of the workpiece, reducing the probability of collision between the workpiece and the boring tool.

[0042] 2. The tool and the connecting member are both connected to the main shaft. By detecting the position of the connecting member, the position of the tool can be indirectly detected. The detection module is far away from the tool, and the detection module will not affect the machining of the workpiece by the tool.

[0043] 3. The relative position between the connecting member and the tool is accurately adjusted to ensure that the position of the tool can be indirectly detected by detecting the position of the connecting member. Description of the Drawings

[0044] Figure 1 is a schematic diagram of the machine tool.

[0045] Figure 2 is a schematic diagram of the tool position detection structure.

[0046] Figure 3 is a schematic diagram of the detection module.

[0047] Description of reference numerals: 1, main shaft; 2, driving member; 3, detection module; 31, mounting ring; 32, locking mechanism; 321, screw; 322, nut; 323, elastic pad; 33, connecting member; 34, sensor; 35, positioning member; 4, interaction module; 5, control module. Detailed implementation manners

[0048] The present application will be further described in detail below with reference to the accompanying drawings.

[0049] Refer to Figure 1 , the machine tool includes a bed, a fixture, a protective plate and a control box.

[0050] The fixture is connected to the bed for clamping a workpiece. The protective plate is slidably connected to the bed in the horizontal direction. The protective plate includes side plates and a top plate. The side plates are located on one side of the bed in the horizontal direction, and the top plate is connected to the upper ends of the side plates and is located on the top of the bed. The control box is connected to the bed, and the control box is used to control the operation of components such as the fixture.

[0051] Refer to Figure 1 and Figure 2 , an embodiment of the present application discloses a tool position detection structure, including a main shaft 1, a driving member 2, a detection module 3, an interaction module 4 and a control module 5.

[0052] The driving member 2 is used to drive the main shaft 1 to rotate. The detection module 3 is connected to one end of the main shaft 1. The detection module 3 detects the circumferential position of the connecting member 33 around the axis of the main shaft 1 and outputs a position signal to the control module 5. The interaction module 4 is used to output a tool change signal in response to the operation of a person. The control module 5 is used to control the operation of the driving member 2 according to the position signal so that the main shaft 1 rotates by a set angle, and the control module 5 is used to control the operation of the driving member 2 according to the tool change signal and the position signal so that the main shaft 1 rotates by a set angle.

[0053] The tool position detection structure is applied to a machine tool. The other end of the main shaft 1 is used for installing a tool. The interaction module 4 and the control module 5 can both be integrated into the control box. After each boring process is completed, the boring tool moves away from the fixture to load and unload the workpiece. At this time, the detection module 3 outputs a position signal, and the control module 5 rotates the main shaft 1 by a set angle according to the position signal, so that the cutting edge of the boring tool rotates away from the moving path of the workpiece.

[0054] For example: Figure 1 In, when using a manipulator to load and unload the workpiece above the bed, the control module 5 rotates the main shaft 1 by a set angle according to the position signal, so that the boring tool faces downwards (away from the protective plate).

[0055] In the case where the tool needs to be replaced, the operator operates on the interaction module 4, and the interaction module 4 outputs a tool change signal. The control module 5 rotates the main shaft 1 by a set angle according to the tool change signal and the position signal, so that the tool rotates towards the protective plate (specifically, the tool can be made to face the side plate), facilitating the operator to replace the tool.

[0056] The driving member 2 can be a motor and drives the main shaft 1 to rotate through a transmission mechanism. For example, a gear or a pulley is coaxially connected to the middle of the main shaft 1.

[0057] In this embodiment: The driving member 2 and the main shaft 1 adopt an electric spindle 1.

[0058] Refer to Figure 3 , the detection module 3 includes a mounting ring 31, a locking mechanism 32, a connecting member 33, and a sensor 34.

[0059] The locking mechanism 32 includes a screw 321, two nuts 322, and two elastic pads 323.

[0060] The screw 321 is coaxially and fixedly connected to the main shaft 1. The mounting ring 31 and the two elastic pads 323 are sleeved outside the screw 321, and the mounting ring 31 is located between the two elastic pads 323. The nut 322 is threadedly connected to the screw 321, and the mounting ring 31 and the two elastics are both located between the two nuts 322. The elastic pad 323 can be a rubber pad.

[0061] The mounting ring 31 is coaxially and rotatably connected to the main shaft 1, and the locking mechanism 32 is used to lock the relative position between the mounting ring 31 and the main shaft 1.

[0062] The connecting member 33 has magnetism. The connecting member 33 is fixedly connected to the outer periphery of the mounting ring 31, and a plurality of connecting members 33 are arranged at equal intervals along the circumference of the mounting ring 31.

[0063] The relative position between the sensor 34 and the housing of the driving member 2 remains fixed. For example: The sensor 34 is directly fixedly connected to the housing of the driving member 2, or a bracket is provided between the sensor 34 and the housing of the driving member 2. The sensor 34 can be a proximity switch or a Hall element. The sensor 34 is used to detect the circumferential position of the connecting member 33 around the axis of the main shaft 1 and output a position signal to the control module 5.

[0064] The tool position detection structure further includes a positioning member 35. The relative position between the positioning member 35 and the housing of the driving member 2 remains fixed. The positioning member 35 and the sensor 34 are symmetrically arranged about the axis of the mounting ring 31, and the magnetic force between the positioning member 35 and the connecting member 33 is an attractive force.

[0065] The implementation principle of a tool position detection structure according to an embodiment of the present application is as follows: After each boring process is completed, the boring tool moves away from the workpiece, above and below the workpiece. At this time, the detection module 3 outputs a position signal, and the control module 5 rotates the main shaft 1 by a set angle according to the position signal, so that the cutting edge of the boring tool rotates to a position away from the moving path of the workpiece, reducing the probability of collision between the workpiece and the boring tool.

[0066] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A tool position detection structure, characterized in that, It includes a main shaft (1), a driving member (2), a detection module (3) and a control module (5). The main shaft (1) is used for installing a tool. The driving member (2) is used to drive the main shaft (1) to rotate. The detection module (3) is used to detect the circumferential position of the main shaft (1) and output a position signal to the control module (5). The control module (5) is used to control the operation of the driving member (2) according to the position signal so that the main shaft (1) rotates by a set angle.

2. The tool position detection structure according to claim 1, characterized in that The detection module (3) includes a connecting member (33) and a sensor (34). The connecting member (33) is connected to one end of the main shaft (1). The sensor (34) is used to detect the circumferential position of the connecting member (33) around the axis of the main shaft (1) and output a position signal to the control module (5). The other end of the main shaft (1) is used for installing a tool.

3. The tool position detection structure according to claim 2, characterized in that A plurality of the connecting members (33) are arranged at equal intervals along the circumference of the main shaft (1).

4. The tool position detection structure according to claim 3, characterized in that, It further includes a positioning member (35). The connecting member (33) has magnetism. The magnetic force between the positioning member (35) and the connecting member (33) is an attractive force.

5. The tool position detection structure according to claim 4, characterized in that The positioning member (35) and the sensor (34) are located on both sides of the main shaft (1).

6. The tool position detection structure according to claim 2, wherein, The detection module (3) further includes a mounting ring (31) and a locking mechanism (32). The mounting ring (31) is coaxially and rotatably connected to the main shaft (1), and the connecting member (33) is connected to the mounting ring (31). The locking mechanism (32) is used to lock the relative position between the mounting ring (31) and the main shaft (1).

7. The tool position detection structure according to claim 6, characterized in that The locking mechanism (32) includes a screw (321) and two nuts (322). The screw (321) is coaxially connected to the main shaft (1), and the mounting ring (31) is sleeved outside the screw (321). The nuts (322) are threadedly connected to the screw (321), and the mounting ring (31) is located between the two nuts (322).

8. The tool position detection structure according to claim 7, characterized in that The locking mechanism (32) further includes two elastic pads (323). The two elastic pads (323) are located between the two nuts (322), and the mounting ring (31) is located between the two elastic pads (323).

9. The tool position detection structure according to claim 1, characterized in that It further includes an interaction module (4). The interaction module (4) is used to output a tool change signal. The control module (5) is used to control the operation of the driving member (2) according to the tool change signal and the position signal so that the main shaft (1) rotates by a set angle.

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