A device and method for quickly detecting tool errors

Abstract

The present invention discloses a device and method for quickly detecting tool errors, and specifically relates to the field of tool error detection. The device comprises: a machine tool, a detection mechanism is arranged on the machine tool, and the detection mechanism is used to detect tool errors; the detection mechanism comprises a reference piece and a test piece, a workbench is arranged on the machine tool, and the reference piece and the test piece are both mounted on the workbench, and the detection mechanism also comprises a measuring piece, and the measuring piece is used to measure the distance between the side of the test piece and the reference piece; during detection, the machine tool drives the tool to be detected to perform a trial cut on the test piece, and the measuring piece measures the distance between the trial cut surface and the reference piece to detect the tool error. The present invention detects tool errors by setting a detection mechanism to perform a trial cut on the test piece, and by setting a reference piece to record the theoretical distance before the trial cut and the actual distance after the trial cut, so as to detect tool errors. The error values ​​of multiple tools can be quickly detected, and the problem of rework or scrap rate caused by tool errors can be conveniently and accurately solved.

Description

Technical Field

[0001] The present invention relates to the technical field of tool error detection, and more specifically, to a device and method for quickly detecting tool errors. Background Art

[0002] A milling cutter is a rotating tool used for milling. It has one or more teeth and is used to cut on the surface of a workpiece to form the desired shape and size. Milling cutters are widely used in mechanical processing and can process planes, grooves, forming surfaces and cut off workpieces.

[0003] At present, in the process of using milling cutters, in order to ensure the processing accuracy, it is necessary to frequently detect and correct the tool errors. At present, there are usually three ways to detect the tool errors of milling cutters. The first way is to make tool compensation based on experience, but occasionally due to unstable tool tolerance, the data exceeds the requirements of the drawing, resulting in scrapped workpieces. The second way is to use a milling cutter to mill an outline and then program it according to the actual tool size after using a micrometer. This method is acceptable, but it requires finding materials for machining, and the efficiency is too low. The third method mainly uses a laser tool setting instrument to detect tool errors, but the laser will offset and cannot be measured accurately after being used for a long time. There are also debris on the tool and the tool swing and cannot be measured accurately. It is unreliable. The three methods mentioned above all have certain limitations, and there is a problem that the tool error detection of the milling cutter cannot be realized quickly and accurately. Summary of the invention

[0004] The present invention provides a device and method for quickly detecting tool errors, and aims to solve the following problem: in order to ensure machining accuracy during the use of existing milling cutters, it is necessary to frequently detect and correct their tool errors. Currently, tool error detection for milling cutters is usually performed based on experience, the milling cutter is programmed according to the actual tool size after milling an outline with a micrometer, and a laser tool setting instrument is used to detect tool errors. However, all of these methods have certain limitations, and there is a problem that tool error detection for milling cutters cannot be realized quickly and accurately.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solution: a device for quickly detecting tool errors, comprising: a machine tool, a detection mechanism is provided on the machine tool, and the detection mechanism is used to detect tool errors;

[0006] The detection mechanism includes a reference piece and a test piece. The machine tool is provided with a workbench. The reference piece and the test piece are both mounted on the workbench. The detection mechanism also includes a measuring piece, which is used to measure the distance between the side of the test piece and the reference piece.

[0007] During the inspection, the machine tool drives the tool to be inspected to perform a test cut on the test piece, and the measuring piece measures the distance between the test cut surface and the reference piece to detect the tool error.

[0008] In a preferred embodiment, a fixing mechanism is provided on the workbench, and the fixing mechanism includes a base, a top seat is fixedly provided on the base, a through hole matched with the top seat is opened on the test piece, a screw rod is threadedly connected to the top seat, the end of the screw rod extends into the top seat, and an extrusion seat is fixedly provided, a side block is slidably provided in the top seat, the extrusion seat is movably abutted against the side block, an elastic piece is provided on the side block, and the end of the side block extends out of the top seat and movably abuts against the test piece.

[0009] In a preferred embodiment, a positioning plate is fixedly provided on the top of the base, and a positioning hole matched with the positioning plate is opened on the test piece.

[0010] In a preferred embodiment, an air blowing mechanism is installed on the base, and the air blowing mechanism includes an air inlet pipe and an air outlet pipe, both of which are installed on the base, the air inlet pipe and the air outlet pipe are connected, and the air inlet end of the air inlet pipe is connected to the air inlet assembly, and the air outlet end of the air outlet pipe is connected to the air outlet head, and the air outlet end of the air outlet head points to the test cutting surface of the test piece.

[0011] In a preferred embodiment, blowing mechanisms are arranged on four sides of the reference member, and the air outlet ends of the blowing mechanisms are all directed toward the reference member.

[0012] In a preferred embodiment, a cooling mechanism is provided in the positioning plate, and the cooling mechanism is used to cool the test cutting surface of the test piece during the test cutting.

[0013] In a preferred embodiment, the cooling mechanism includes a flow channel opened in the positioning plate, and the liquid inlet end and the liquid outlet end of the flow channel are respectively connected to a liquid inlet pipe and a liquid outlet pipe, and the liquid inlet end of the liquid inlet pipe is connected to a liquid inlet assembly.

[0014] In a preferred embodiment, a positioning mechanism is provided on the base, and the positioning mechanism includes a vertical plate, which is arranged at the bottom of the test piece, and a vertical groove is opened on the base, and the vertical plate is inserted into the vertical groove. A threaded rod is threadedly connected to one side of the base, and the end of the threaded rod extends into the vertical groove and is fixedly connected to a support plate.

[0015] In a preferred embodiment, a mounting mechanism is provided on the workbench, the mounting mechanism includes a mounting seat, the mounting seat is fixedly mounted on the base, and mounting plates are installed on both sides of the workbench, fasteners are provided on the mounting seat, and the mounting seat is fixedly mounted on the mounting plate through the fasteners.

[0016] A method for using a device for quickly detecting tool errors comprises the following steps:

[0017] Step 1: Install the test piece on the workbench through the installation mechanism;

[0018] Step 2: Measure and record the distance between the reference piece and the side of the test piece by using the measuring piece;

[0019] Step 3: Test-cut the test piece using a machine tool, and record the theoretical distance between the reference piece and the test-cut surface;

[0020] Step 4: Measure and record the actual distance between the reference part and the test cutting surface, and calculate the tool error.

[0021] The beneficial effects of the present invention are:

[0022] The present invention detects tool errors by setting up a detection mechanism, performing trial cutting on a test piece, and setting up a reference piece to record the theoretical distance before the trial cutting and the actual distance after the trial cutting. The error values ​​of multiple tools can be detected quickly, and the problem of rework or scrap rate caused by tool errors can be solved conveniently and accurately. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0024] Figure 2 It is a three-dimensional schematic diagram of the reference piece, the test piece and the workbench of the present invention.

[0025] Figure 3 It is a schematic diagram of the three-dimensional structure of the test piece and the fixing mechanism of the present invention.

[0026] Figure 4 It is a schematic diagram of the front cross-sectional structure of the fixing mechanism of the present invention.

[0027] Figure 5 It is a schematic diagram of another working state of the fixing mechanism of the present invention.

[0028] Figure 6 It is a three-dimensional schematic diagram of the blowing mechanism of the present invention.

[0029] Figure 7 It is a structural schematic diagram of the cooling mechanism of the present invention.

[0030] Figure 8 It is a structural schematic diagram of the positioning mechanism of the present invention.

[0031] Fig. 9 It is a three-dimensional structural schematic diagram of the mounting mechanism of the present invention.

[0032] Fig.10 The present invention is a flow chart of the method.

[0033] The accompanying drawings are marked as follows: 1. machine tool; 11. workbench; 2. detection mechanism; 21. reference part; 22. test piece; 221. through hole; 222. positioning hole; 23. measuring piece; 3. fixing mechanism; 31. base; 311. top seat; 32. positioning plate; 33. screw rod; 34. extrusion seat; 35. side block; 36. elastic part; 4. blowing mechanism; 41. air inlet pipe; 42. air outlet pipe; 43. air outlet head; 5. cooling mechanism; 51. liquid inlet pipe; 52. liquid outlet pipe; 53. flow channel; 6. positioning mechanism; 61. vertical plate; 62. vertical groove; 63. threaded rod; 64. abutment plate; 7. mounting mechanism; 71. mounting seat; 72. mounting plate; 73. fastener. DETAILED DESCRIPTION

[0034] The present application is further described in detail below in conjunction with the accompanying drawings. It is necessary to point out here that the following specific implementation methods are only used to further illustrate the present application and cannot be understood as limiting the scope of protection of the present application. Technical personnel in this field can make some non-essential improvements and adjustments to the present application based on the above application content.

[0035] Refer to the instruction manual Figures 1 to 9 , a device for quickly detecting tool errors, comprising: a machine tool 1, on which a detection mechanism 2 is provided, the detection mechanism 2 is used to detect tool errors;

[0036] The detection mechanism 2 includes a reference piece 21 and a test piece 22. The machine tool 1 is provided with a workbench 11. The reference piece 21 and the test piece 22 are both mounted on the workbench 11. The detection mechanism 2 also includes a measuring piece 23. The measuring piece 23 is used to measure the distance between the side of the test piece 22 and the reference piece 21.

[0037] During the inspection, the machine tool 1 drives the tool to be inspected to perform a test cut on the test piece 22 , and the measuring piece 23 measures the distance between the test cut surface and the reference piece 21 to detect the tool error.

[0038] It should be noted that the reference piece 21 is a reference block fixedly installed on the workbench 11, which is used as a reference during inspection. The test piece 22 is a workpiece used for trial cutting, and the test piece 22 is replaceable. The measuring piece 23 is a high-precision measuring probe, and the trial cutting surface is the surface of the test piece 22 after the trial cutting is completed.

[0039] The specific implementation scenario is as follows: first, the distance between the side of the reference piece 21 and the test piece 22 is measured and recorded by a high-precision measuring probe, and then the machine tool 1 drives the tool to be tested to test cut the side of the test piece 22, and records the theoretical distance between the reference piece 21 and the test cutting surface. Before the test cutting, the machine tool 1 is used to estimate the amount of test piece 22 to be cut, as well as the sum of the distances between the side of the reference piece 21 and the test piece 22. After the test cutting is completed, the actual distance between the reference piece 21 and the test cutting surface is measured and recorded, and the tool error value can be calculated by the theoretical distance and the actual distance. By using the test piece 22 and testing the test piece 22 to detect the tool error, the error values ​​of multiple tools can be quickly detected, and the rework or scrap rate caused by the tool error can be easily and accurately solved.

[0040] For further information, please refer to the attached manual. Figures 3 to 5 A fixing mechanism 3 is provided on the workbench 11, and the fixing mechanism 3 includes a base 31, on which a top seat 311 is fixedly provided, and a through hole 221 adapted to the top seat 311 is opened on the test piece 22, and a screw rod 33 is threadedly connected to the top seat 311, and the end of the screw rod 33 extends into the top seat 311 and is fixedly provided with an extrusion seat 34, and a side block 35 is slidably provided in the top seat 311, and the extrusion seat 34 is movably abutted against the side block 35, and an elastic member 36 is provided on the side block 35, and the end of the side block 35 extends out of the top seat 311 and movably abuts against the test piece 22.

[0041] It should be noted that there are three side blocks 35, the bottom of the extrusion seat 34 is a semi-sphere, and the elastic member 36 is a spring. When the test piece 22 needs to be replaced, the spring is in a compressed state, and the screw rod 33 can be turned to drive the extrusion seat 34 to move upward, so that the three side blocks 35 can move centripetally synchronously through the elastic deformation of the spring. The three side blocks 35 can be put into the top seat 311 to release the fixation of the test piece 22, and then the test piece 22 can be removed and a new test piece 22 can be installed. Then the screw rod 33 is turned in the reverse direction to make the three side blocks 35 move outward synchronously, so that the three side blocks 35 can press and fix the test piece 22.

[0042] For further information, please refer to the attached manual. Figure 3 A positioning plate 32 is fixedly disposed on the top of the base 31 , and a positioning hole 222 adapted to the positioning plate 32 is opened on the test piece 22 .

[0043] It should be noted that the positioning plate 32 and the positioning hole 222 can facilitate the positioning of the test piece 22 during installation.

[0044] In the above technical scheme, the test cutting is carried out by cutting the test piece 22, and debris splashing will be generated in the cutting process. The debris is easy to splash onto the reference piece 21, and it is easy to cause the debris to remain on the test cutting surface of the test piece 22. For this reason, the present invention proposes a blowing mechanism 4, which is used to blow air toward the test cutting surface and the reference piece 21 during the test cutting process, so that the debris can be blown away from the reference piece 21 and the test cutting surface.

[0045] For details, please refer to the attached manual. Figure 6 A blowing mechanism 4 is installed on the base 31, and the blowing mechanism 4 includes an air inlet pipe 41 and an air outlet pipe 42. The air inlet pipe 41 and the air outlet pipe 42 are both installed on the base 31, the air inlet pipe 41 is connected with the air outlet pipe 42, and the air inlet end of the air inlet pipe 41 is connected with an air inlet assembly, and the air outlet end of the air outlet pipe 42 is connected with an air outlet head 43, and the air outlet end of the air outlet head 43 points to the test cutting surface of the test piece 22. The blowing mechanisms 4 are arranged on the four sides of the reference piece 21, and the air outlet ends of the blowing mechanisms 4 all point to the reference piece 21.

[0046] It should be noted that the air intake assembly is an air pump, which delivers air to the air intake pipe 41, so that the air enters the air outlet pipe 42 through the air intake pipe 41, and then blows toward the test cutting surface and the reference part 21 through the air outlet head 43, so as to achieve the effect of blowing and cleaning.

[0047] In the above technical scheme, during the use of the test piece 22, since it is necessary to frequently perform test cutting to detect tool errors, in order to avoid the problem of tool damage caused by frequent test cutting, it is necessary to use a test piece 22 made of soft material, and the soft material may be polyethylene or polyurethane. However, during the test cutting process, the soft material is prone to cause a large amount of heat on the test cutting surface due to the high-speed movement of the tool, which in turn causes the test cutting surface to expand due to the high temperature, resulting in measurement errors when it is measured by the measuring piece 23. For this reason, the present invention proposes a cooling mechanism 5 for cooling the test cutting surface of the test piece 22 during the test cutting process.

[0048] For details, please refer to the attached manual. Figure 7 A cooling mechanism 5 is provided in the positioning plate 32. The cooling mechanism 5 is used to cool the test cutting surface of the test piece 22 during the test cutting. The cooling mechanism 5 includes a flow channel 53 opened in the positioning plate 32, and the liquid inlet end and the liquid outlet end of the flow channel 53 are respectively connected to a liquid inlet pipe 51 and a liquid outlet pipe 52, and the liquid inlet end of the liquid inlet pipe 51 is connected to a liquid inlet component.

[0049] It should be noted that the liquid inlet component is a water pump, which draws coolant through the water pump and transports it to the flow channel 53 through the liquid inlet pipe 51, so that the coolant flows in the flow channel 53. As a result, the test cutting surface can be cooled when the coolant flows in the flow channel 53, thereby solving the problem that the high temperature generated by cutting will cause the test cutting surface to expand due to heat and affect the measurement accuracy.

[0050] It should also be noted that the air blowing mechanism 4 can also be used to blow air and cool the test cut surface. The test cut surface can be cooled simultaneously by air blowing cooling and heat exchange cooling, so that a good cooling effect can be achieved.

[0051] In the above technical scheme, the test piece 22 is positioned by the positioning plate 32 and the positioning hole 222. Since the test piece 22 needs to be inserted into the positioning plate 32 through the positioning hole 222 to achieve the positioning of the test piece 22, an interference fit is required between the positioning hole 222 and the positioning plate 32, or a setting is adopted in which the diameter of the positioning hole 222 is slightly larger than the positioning plate 32. However, since the interference fit will cause the test piece 22 to be difficult to disassemble when it is disassembled and replaced, it is usually adopted that the diameter of the positioning hole 222 is slightly larger than the positioning plate 32 to facilitate the insertion of the test piece 22 on the positioning plate 32. However, during the trial cutting of the test piece 22, it is easy for the test piece 22 to be offset because the diameter of the positioning hole 222 is slightly larger than the positioning plate 32, thereby causing measurement deviation during measurement and affecting the detection accuracy. For this reason, the present invention proposes a positioning mechanism 6 for further positioning and fixing the test piece 22 after the test piece 22 is installed.

[0052] For details, please refer to the attached manual. Figure 8 A positioning mechanism 6 is provided on the base 31, and the positioning mechanism 6 includes a vertical plate 61, which is provided at the bottom of the test piece 22. A vertical groove 62 is opened on the base 31, and the vertical plate 61 is inserted into the vertical groove 62. A threaded rod 63 is threadedly connected to one side of the base 31, and the end of the threaded rod 63 extends into the vertical groove 62 and is fixedly connected to a stop plate 64.

[0053] It should be noted that when installing the test piece 22, the vertical plate 61 can be inserted into the vertical groove 62, and then the threaded rod 63 can be screwed to drive the abutment plate 64 to move, and the abutment plate 64 can be used to abut the vertical plate 61, and the vertical plate 61 can be used to drive the test piece 22 to move, so that one side of the vertical plate 61 can contact the inner wall of the vertical groove 62, thereby completing the further fixation of the test piece 22, so that it can ensure the fixing effect of the test piece 22 during the test cutting process, and avoid the displacement of the test piece 22 caused by the test cutting.

[0054] For further information, please refer to the attached manual. Fig. 9A mounting mechanism 7 is provided on the workbench 11, and the mounting mechanism 7 includes a mounting seat 71, and the mounting seat 71 is fixedly mounted on the base 31, and mounting plates 72 are installed on both sides of the workbench 11, and fasteners 73 are provided on the mounting seat 71, and the mounting seat 71 is fixedly mounted on the mounting plate 72 through the fasteners 73.

[0055] It should be noted that the fastener 73 is a bolt, and the installation and fixation can be completed by placing the mounting seat 71 on the workbench 11, fitting the mounting seat 71 with the mounting plate 72, and then fastening the mounting seat 71 with the mounting plate 72 with bolts.

[0056] It should also be noted that in order to ensure full utilization of the test piece 22, after trial cutting one side of the test piece 22, when the side can no longer be trial cut, the mounting seat 71 can be removed by the mounting mechanism 7, and the other side of the test piece 22 can be adjusted to face the reference piece 21, and then the mounting seat 71 can be fixed to the mounting plate 72 by the mounting mechanism 7, and the adjustment of the test piece 22 can be completed so that the test piece 22 can be fully utilized.

[0057] Refer to the instruction manual Fig.10 , a method for using a device for quickly detecting tool errors, comprising the following steps:

[0058] Step 1: Install the test piece 22 on the workbench 11 through the installation mechanism 7;

[0059] Step 2: Measure and record the distance between the reference piece 21 and the side surface of the test piece 22 by the measuring piece 23;

[0060] Step 3: test cutting the test piece 22 by the machine tool 1, and record the theoretical distance between the reference piece 21 and the test cutting surface;

[0061] Step 4: Measure and record the actual distance between the reference piece 21 and the trial cutting surface, and obtain the tool error by calculation.

[0062] The above-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. A device for quickly detecting tool errors, characterized in that: include: A machine tool (1), wherein the machine tool (1) is provided with a detection mechanism (2), and the detection mechanism (2) is used to detect tool errors; The detection mechanism (2) comprises a reference piece (21) and a test piece (22); a workbench (11) is provided on the machine tool (1); the reference piece (21) and the test piece (22) are both mounted on the workbench (11); the detection mechanism (2) further comprises a measuring piece (23); the measuring piece (23) is used to measure the distance between the side surface of the test piece (22) and the reference piece (21); During the inspection, the machine tool (1) drives the tool to be inspected to perform a test cut on the test piece (22), and the measuring piece (23) measures the distance between the test cut surface and the reference piece (21) to detect the tool error; The workbench (11) is provided with a fixing mechanism (3), the fixing mechanism (3) comprising a base (31), a top seat (311) being fixedly provided on the base (31), a through hole (221) matching the top seat (311) being provided on the test piece (22), a screw rod (33) being threadedly connected to the top seat (311), an end of the screw rod (33) extending into the top seat (311), and a pressing seat (34) being fixedly provided thereon, a side block (35) being slidably provided in the top seat (311), the pressing seat (34) being movably abutted against the side block (35), an elastic member (36) being provided on the side block (35), and an end of the side block (35) extending out of the top seat (311) and movably abutting against the test piece (22); A positioning plate (32) is fixedly arranged on the top of the base (31), and a positioning hole (222) matching the positioning plate (32) is provided on the test piece (22).

2. A device for quickly detecting tool errors according to claim 1, characterized in that: An air blowing mechanism (4) is mounted on the base (31), the air blowing mechanism (4) comprising an air inlet pipe (41) and an air outlet pipe (42), the air inlet pipe (41) and the air outlet pipe (42) both being mounted on the base (31), the air inlet pipe (41) being connected to the air outlet pipe (42), the air inlet end of the air inlet pipe (41) being connected to an air inlet assembly, the air outlet end of the air outlet pipe (42) being connected to an air outlet head (43), the air outlet end of the air outlet head (43) being directed toward the test cutting surface of the test piece (22).

3. A device for quickly detecting tool errors according to claim 2, characterized in that: Air blowing mechanisms (4) are arranged on four sides of the reference member (21), and air outlet ends of the air blowing mechanisms (4) are all directed towards the reference member (21).

4. A device for quickly detecting tool errors according to claim 3, characterized in that: A cooling mechanism (5) is provided in the positioning plate (32), and the cooling mechanism (5) is used to cool down the test cutting surface of the test piece (22) during the test cutting.

5. The device for quickly detecting tool errors according to claim 4, characterized in that: The cooling mechanism (5) comprises a flow channel (53) opened in the positioning plate (32), and the liquid inlet end and the liquid outlet end of the flow channel (53) are respectively connected to a liquid inlet pipe (51) and a liquid outlet pipe (52), and the liquid inlet end of the liquid inlet pipe (51) is connected to a liquid inlet assembly.

6. The device for quickly detecting tool errors according to claim 5, characterized in that: The base (31) is provided with a positioning mechanism (6), the positioning mechanism (6) comprising a vertical plate (61), the vertical plate (61) being arranged at the bottom of the test piece (22), the base (31) being provided with a vertical groove (62), the vertical plate (61) being inserted into the vertical groove (62), a threaded rod (63) being threadedly connected to one side of the base (31), the end of the threaded rod (63) extending into the vertical groove (62) and being fixedly connected to a stop plate (64).

7. A device for quickly detecting tool errors according to claim 6, characterized in that: The workbench (11) is provided with a mounting mechanism (7), the mounting mechanism (7) comprising a mounting seat (71), the mounting seat (71) being fixedly mounted on the base (31), and mounting plates (72) being mounted on both sides of the workbench (11), the mounting seat (71) being provided with a fastener (73), and the mounting seat (71) being fixedly mounted on the mounting plate (72) via the fastener (73).

8. A method for using the device for rapid tool error detection as claimed in claim 1, characterized in that: The following steps are involved: Step 1: Mounting the test piece (22) on the workbench (11) using the mounting mechanism (7); Step 2: measuring and recording the distance between the reference piece (21) and the side surface of the test piece (22) by using the measuring piece (23); Step 3: test cutting the test piece (22) by using the machine tool (1), and recording the theoretical distance between the reference piece (21) and the test cutting surface; Step 4: Measure and record the actual distance between the reference piece (21) and the test cutting surface, and calculate the tool error.

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