Machine tool capable of detecting size of round hole of workpiece without shutdown

Abstract

A machine tool capable of detecting the size of a round hole of a workpiece without shutdown comprises a machine tool shell, a machine head provided with a chuck, an automatic workpiece feeding device and a tool rest device are arranged in the machine tool shell, the tool rest device comprises a dragging plate driven by a motor, and the dragging plate is provided with a tool rest and an automatic detection device; the automatic detection device comprises a round hole diameter automatic detection device, the round hole diameter automatic detection device comprises a second rotating shaft connected with the go gauge, the second rotating shaft is connected with a second connecting rod device, the second connecting rod device comprises a disc connected with the second rotating shaft, the side edge of the disc is connected with a second elastic rod, and the second elastic rod is connected with a second sensor. According to the machine tool capable of detecting the size of the round hole of the workpiece without shutdown, the size of the round hole of the workpiece is detected through the automatic detection device, so that the size detection of each workpiece can be completed on the machine tool, additional detection equipment and secondary detection work are reduced, and the workpiece machining efficiency and the product yield are improved.

Description

Technical Field

[0001] The utility model relates to a machine tool tool for processing hole-type workpieces, a device and a method for detecting the size of workpiece circular holes, in particular to a method for detecting the size of workpiece circular holes without stopping the machine and a method for alarming tool wear. Background Art

[0002] Currently, after a workpiece hole is machined, additional equipment or expensive visual inspection is required to verify that the hole meets the required dimensions. This is often done with other equipment, lacking the machine tool's own built-in inspection devices or structures. Technologically skilled personnel are exploring how to perform workpiece dimensional inspection and tool wear alarms without stopping the machine. Utility Model Content

[0003] The purpose of the utility model is to address the defects and shortcomings of the existing technology and provide a machine tool that can detect the size of the circular hole of the workpiece without stopping the machine. It can monitor the size status of the circular hole of the workpiece in real time and detect tool wear or damage in time, thereby improving production efficiency and processing accuracy.

[0004] In order to achieve the above-mentioned purpose, the present invention provides a machine tool capable of detecting the size of a circular hole in a workpiece without stopping, comprising a machine tool housing, a machine head for mounting a chuck, an automatic loading device for the workpiece, and a tool holder device, wherein the tool holder device comprises a motor-driven carriage, the carriage being equipped with a tool holder and an automatic detection device; the automatic detection device comprises an automatic circular hole diameter detection device, the circular hole diameter detection device comprising a second rotating shaft connected to a through gauge, the second rotating shaft being connected to a second connecting rod device, the second connecting rod device comprising a disc connected to the second rotating shaft, the side of the disc being connected to a second elastic rod, and the second elastic rod being connected to a second sensor. The automatic circular hole diameter detection device matches the circular hole on the workpiece with a through gauge, and the through gauge can not only clean the cutting powder in the circular hole, but can also determine whether the circular hole meets the technical requirements through the magnitude of the rotational force exerted on the second elastic rod through the second sensor, thereby achieving the technical purpose of detecting the size of the circular hole in the workpiece without stopping. The utility model is a machine tool for detecting the size of a circular hole in a workpiece without stopping. The tool holder and the automatic detection device are installed on the carriage. The tool on the tool holder completes the chip cutting of the workpiece, and then the circular hole size of each workpiece is detected by the automatic detection device. Therefore, the size detection of each workpiece is completed on the machine tool, which reduces the need for additional detection equipment and secondary detection work, thereby improving the workpiece processing efficiency and product yield. The circular hole size detection of each workpiece by the automatic detection device indirectly reflects the wear of the cutting tool. As long as the workpiece is within the specified size range, it means that the cutting tool is within the normal range. Once the detection alarm is issued, it means that the cutting tool is excessively worn and needs to be replaced. The wear of the tool is discovered in time to avoid the production of batches of unqualified products.

[0005] The outer periphery of the second rotating shaft is provided with a first rubber pad and a second box body, and the side of the second box body is connected to the protective cover of the second connecting rod device; the rod body of the second elastic rod is a third spring, and the outer periphery of the third spring is sleeved with the second sensor. The rotational force of different forces applied to the third spring determines whether the second sensor triggers the machine tool to generate an alarm, which not only detects the aperture of the circular hole, but also automatically determines the status of the cutting tool.

[0006] The automatic detection device includes an automatic hole expansion detection device, which includes a third rotating shaft connected to a reamer, which is connected to a third connecting rod assembly, which includes a third swing arm connected to the third rotating shaft, the third swing arm connected to one end of a fourth spring via a third screw, the other end of the fourth spring connected to a fourth screw, the fourth screw connected to a first elastic force adjustment bracket, and the first elastic force adjustment bracket connected to a third housing; the third swing arm cooperates with a first sensing rod that contacts a third sensor. The automatic hole expansion detection device cooperates with a reamer to expand the circular hole in a workpiece. The reamer not only re-expands the circular hole to remove residual cutting powder, but also uses the rotational force exerted on the third swing arm to determine whether the circular hole meets technical requirements via a third sensor, thereby achieving the technical purpose of detecting the circular hole size in the workpiece without stopping the machine.

[0007] The first elastic force adjustment bracket is provided with more than two second adjustment holes, and the second adjustment holes are matched with the fourth screw. By adjusting the different connection distances between the second adjustment hole and the fourth spring, the adjustment of different sensing cutting forces required for different circular hole enlargements is achieved to solve the adaptive detection performance of the automatic detection device for different circular holes; the first sensing rod is a spring rod, which avoids damage to the first sensing rod during the contact process and extends the service life of the sensor and the reliability of the sensing; the third sensor is connected to the second connecting rod through the second connecting column, and the second connecting rod is connected to the first elastic force adjustment bracket or the third box. The second connecting rod and the first sensing rod are parallel to each other, and the distance between the first sensing rod and the second connecting rod is the swing range of the third swing arm. The adjustment of the distance between the second connecting rod and the first sensing rod realizes the adjustment ability of the detection range of the automatic circular hole detection device.

[0008] A second sleeve is sleeved in the middle of the third rotating shaft, and second rubber pads are sleeved at both the front and rear ends of the second sleeve. This second rubber pad structure prevents damage to the workpiece caused by the reamer impacting the workpiece. A second positioning screw is connected to the outer periphery of the second sleeve, which connects the third housing and the third rotating shaft. This second positioning screw structure can limit the position of the second rotating shaft to prevent accidental deflection of the second rotating shaft.

[0009] A method for detecting the size of a circular hole in a workpiece without stopping the machine, the method comprising the following steps:

[0010] Step 1: The workpiece is machined into a circular hole by a cutting tool on a tool holder;

[0011] Step 2: For the processed circular hole, only the aperture is detected. An automatic circular hole diameter detection device is selected to fit the circular hole with a through gauge. When the circular hole meets the design requirements, the second rotating shaft drives the second elastic rod connected to the side of the circular disc to rotate at an angle insufficient to trigger the second sensor. When the circular hole is too small, the second rotating shaft drives the second elastic rod connected to the side of the circular disc to rotate and trigger the second sensor. The machine tool displays the detection result and an alarm is processed, indicating that the cutting tool is worn or damaged and needs to be replaced.

[0012] When the processed circular hole needs to be enlarged and the hole diameter is automatically detected, the automatic enlargement detection device cooperates with the circular hole through the reamer. When the circular hole meets the design requirements, the reamer drives the third rotating shaft to rotate, but the rotation angle does not trigger the first sensing rod of the third sensor; when the circular hole is too small, the reamer drives the third rotating shaft to rotate, triggering the first sensing rod of the third sensor, and the machine tool displays the detection result and alarms. This indicates that the cutting tool is worn or damaged and needs to be replaced.

[0013] Using the above-mentioned technical solution, a machine tool that detects the size of a workpiece's circular hole without stopping uses a tool holder and an automatic detection device mounted on a carriage. The tool on the tool holder completes the chipping of the workpiece, and then the automatic detection device detects the size of the workpiece's circular hole on each workpiece. This allows each workpiece to complete the size detection on the machine tool, reducing the need for additional detection equipment and secondary inspection work, thereby improving workpiece processing efficiency and product yield. The automatic detection device indirectly reflects the wear of the cutting tool by detecting the size of the workpiece's circular hole on each workpiece. As long as the workpiece is within the specified size range, the cutting tool is within the normal range. Once a detection alarm is issued, it indicates that the cutting tool is excessively worn and needs to be replaced. Tool wear can be detected in a timely manner to avoid the production of batches of unqualified products. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0015] FIG1 is a schematic diagram of the three-dimensional structure of a machine tool for detecting the size of a circular hole in a workpiece without stopping the machine;

[0016] FIG2 is a schematic diagram of the internal three-dimensional structure of a machine tool for detecting the size of a circular hole in a workpiece without stopping the machine in the present invention;

[0017] FIG3 is a schematic diagram of the internal three-dimensional structure of a machine tool for detecting the size of a circular hole in a workpiece without stopping the machine in another angle according to the present invention;

[0018] FIG4 is a schematic diagram of the three-dimensional structure of the automatic hole expansion detection device of the present invention;

[0019] FIG5 is a schematic diagram of the internal three-dimensional structure of the automatic hole expansion detection device of the present invention;

[0020] FIG6 is a schematic diagram of the reamer installation structure of the automatic hole expansion detection device of the present invention;

[0021] FIG7 is a schematic diagram of the installation structure of the third rotating shaft of the automatic hole expansion detection device of the present invention;

[0022] FIG8 is a schematic diagram of the three-dimensional structure of the automatic detection device for the diameter of a circular hole in the utility model;

[0023] FIG9 is a schematic diagram of the internal three-dimensional structure of the automatic detection device for the diameter of a circular hole of the present invention;

[0024] FIG10 is a schematic diagram of the three-dimensional structure of the automatic loading device for workpieces in the present invention;

[0025] FIG11 is a schematic diagram of the three-dimensional structure of the workpiece holder in the automatic loading device of the workpiece of the present invention. DETAILED DESCRIPTION

[0026] The following is a clear and complete description of the technical solutions in the embodiments of the present invention, in conjunction with the accompanying drawings. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of them. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without creative work are within the scope of protection of the present invention.

[0027] like Figure 1-11 As shown, a machine tool for detecting the size of a circular hole in a workpiece without stopping the machine comprises a machine tool housing 1, in which a machine head 5 for mounting a chuck 3, an automatic loading device 2 for a workpiece 66 and a tool holder device 4 are provided, the tool holder device 4 comprises a carriage 6 driven by a motor 8, the carriage 6 is mounted with a tool holder 84 and an automatic detection device comprising an automatic circular hole diameter detection device 7, the automatic circular hole diameter detection device 7 comprises a second rotating shaft 54 connected to a through gauge 50, the second rotating shaft 54 is connected to a second connecting rod device, the second connecting rod device comprises a disc 58 connected to the second rotating shaft 54, the side of the disc 58 is connected to a second elastic rod 55, and the second elastic rod 55 is connected to a second sensor 56.

[0028] The outer periphery of the second rotating shaft 54 is provided with a first rubber pad 53 and a second box body 51. The side of the second box body 51 is connected to the protective cover 52 of the second connecting rod device. The rod body of the second elastic rod 55 is a third spring 57. The outer periphery of the third spring 57 is sleeved with a second sensor 56.

[0029] As a preferred structure, the automatic detection device also includes an automatic hole expansion detection device 30, which includes a third rotating shaft 44 connected to the reamer 28, and the third rotating shaft 44 is connected to the third connecting rod device. The third connecting rod device includes a third swing arm 41 connected to the third rotating shaft 44, and the third swing arm 41 is connected to one end of the fourth spring 35 through the third screw 38, and the other end of the fourth spring 35 is connected to the fourth screw 34, and the fourth screw 34 is connected to the first elastic force adjustment bracket 32, and the first elastic force adjustment bracket 32 is connected to the third box body 31; the third swing arm 41 cooperates with the first sensing rod 40 that contacts the third sensor 39.

[0030] The first elastic force adjustment bracket 32 is provided with more than two second adjustment holes 33, and the second adjustment holes 33 are matched with the fourth screw 34; the first sensing rod 40 is a spring rod; the third sensor 39 is connected to the second connecting rod 36 through the second connecting column 37, and the second connecting rod 36 is connected to the first elastic force adjustment bracket 32 or connected to the third box body 31. The second connecting rod 36 is parallel to the first sensing rod 40, and the distance between the first sensing rod 40 and the second connecting rod 36 is the swing range of the third swing arm 41.

[0031] The second sleeve 43 is sleeved in the middle of the third rotating shaft 44 . The second rubber pads 42 are sleeved at the front and rear ends of the second sleeve 43 . The outer periphery of the second sleeve 43 is connected to the second positioning screw 29 . The second positioning screw 29 connects the third box 31 and the third rotating shaft 44 .

[0032] A method for detecting the size of a circular hole in a workpiece without stopping the machine comprises the following steps:

[0033] Step 1: The workpiece 66 is machined into a circular hole by the cutting tool on the tool holder 84;

[0034] Step 2: For the round hole processed, only the diameter is detected. The round hole diameter automatic detection device 7 is selected to fit the round hole through the through gauge 50. When the round hole meets the design requirements, the second rotating shaft 54 drives the second elastic rod 55 connected to the side of the disc 58 to rotate at an angle that is insufficient to trigger the second sensor 56. When the round hole is too small, the second rotating shaft 54 drives the second elastic rod 55 connected to the side of the disc 58 to rotate and trigger the second sensor 56. The machine tool displays the detection result and alarms, indicating that the cutting tool is worn or damaged and needs to be replaced.

[0035] When the processed circular hole needs to be enlarged and the hole diameter is automatically detected, the automatic enlargement detection device 30 cooperates with the circular hole through the reamer 28. When the circular hole meets the design requirements, the reamer 28 drives the third rotating shaft 44 to rotate, but the rotation angle does not trigger the first sensing rod 40 of the third sensor 39; when the circular hole is too small, the reamer 28 drives the third rotating shaft 44 to rotate, triggering the first sensing rod 40 of the third sensor 39, and the machine tool displays the detection result alarm processing, which indicates that the cutting tool has been worn or damaged and needs to be replaced.

[0036] The automatic loading device 2 for the workpiece 66, which is a preferred structure, includes a lateral adjustment seat 62 and a longitudinal adjustment seat 61 that are connected to each other. The longitudinal adjustment seat 61 is connected to a vertical connecting plate 63. The vertical connecting plate 63 is connected to a first slider 60. The first slider 60 is connected to a workpiece clamp base 64. The workpiece clamp base 64 is respectively connected to a vertical cylinder 72, a longitudinal cylinder mounting seat 71, and a workpiece clamp. The workpiece clamp includes a fixed clamping seat 65 and a rotating clamping frame 73 that are connected to each other. The fixed clamping seat 65 and the rotating clamping frame 73 clamp the workpiece 66, and the workpiece 66 is arranged along a guide groove 75. The longitudinal cylinder mounting seat 71 is connected to a second slider 69. The second slider 69 is connected to a horizontal cylinder 68. The horizontal cylinder 68 is connected to a pressing plate 67. The cylinder push rod 70 of the horizontal cylinder 68 is connected to the workpiece clamp base 64.

[0037] The working process of the automatic loading device 2 is as follows: the vertical cylinder 72 drives the workpiece clamp to transport the workpiece 66 to the chuck 3 of the machine tool, and then the horizontal cylinder 68 drives the pressing plate 67 through the cylinder push rod 70 to press the workpiece 66 into the chuck 3, completing the automatic clamping function of the workpiece, and then the automatic loading device 2 is reset, and the workpiece 66 in the guide rail groove 75 automatically enters the workpiece clamp. After the workpiece is processed, it reciprocates again to cooperate with the chuck 3 to realize automated production.

[0038] Although the embodiments of the present invention have been shown and described above, it should be understood that the above embodiments are illustrative and should not be construed as limiting the present invention. Those skilled in the art may make changes, modifications, substitutions, and variations to the above embodiments without departing from the principles and purpose of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A machine tool for detecting the size of a circular hole in a workpiece without stopping the machine, comprising a machine tool housing (1), a machine head (5) for mounting a chuck (3), an automatic loading device (2) for loading a workpiece (66), and a tool holder device (4) arranged in the machine tool housing (1), characterized in that: The tool holder device (4) includes a carriage (6) driven by a motor (8), the carriage (6) is equipped with a tool holder (84) and an automatic detection device; the automatic detection device includes a circular hole diameter automatic detection device (7), the circular hole diameter automatic detection device (7) includes a second rotating shaft (54) connected to a through gauge (50), the second rotating shaft (54) is connected to a second connecting rod device, the second connecting rod device includes a disk (58) connected to the second rotating shaft (54), the side of the disk (58) is connected to a second elastic rod (55), and the second elastic rod (55) is connected to a second sensor (56).

2. The machine tool for detecting the size of a circular hole in a workpiece without stopping the machine according to claim 1, characterized in that: The outer periphery of the second rotating shaft (54) is provided with a first rubber pad (53) and a second box body (51), and the side of the second box body (51) is connected to the protective cover (52) of the second connecting rod device; the rod body of the second elastic rod (55) is a third spring (57), and the outer periphery of the third spring (57) is sleeved with the second sensor (56).

3. The machine tool for detecting the size of a circular hole in a workpiece without stopping the machine according to claim 1, characterized in that: The automatic detection device further includes an automatic hole expansion detection device (30), the automatic hole expansion detection device (30) including a third rotating shaft (44) connected to the reamer (28), the third rotating shaft (44) connected to the third connecting rod device, the third connecting rod device including a third swing arm (41) connected to the third rotating shaft (44), the third swing arm (41) connected to one end of a fourth spring (35) through a third screw (38), the other end of the fourth spring (35) connected to the fourth screw (34), the fourth screw (34) connected to the first elastic force adjustment bracket (32), the first elastic force adjustment bracket (32) connected to the third box (31); the third swing arm (41) cooperates with the first sensing rod (40) contacting the third sensor (39).

4. The machine tool for detecting the size of a circular hole in a workpiece without stopping the machine according to claim 3, characterized in that: The first elastic force adjustment bracket (32) is provided with two or more second adjustment holes (33), and the second adjustment holes (33) are matched with the fourth screw (34); the first sensing rod (40) is a spring rod; the third sensor (39) is connected to the second connecting rod (36) through the second connecting column (37); the second connecting rod (36) is connected to the first elastic force adjustment bracket (32) or the third box (31); the second connecting rod (36) and the first sensing rod (40) are parallel to each other, and the distance between the first sensing rod (40) and the second connecting rod (36) is the swing range of the third swing arm (41).

5. The machine tool for detecting the size of a circular hole in a workpiece without stopping the machine according to claim 3, characterized in that: The third rotating shaft (44) is sleeved with a second shaft sleeve (43) in the middle, the front and rear ends of the second shaft sleeve (43) are sleeved with second rubber pads (42), the outer periphery of the second shaft sleeve (43) is connected to a second positioning screw (29), and the second positioning screw (29) is connected to the third box (31) and the third rotating shaft (44).

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