CN119347463A - Axial positioning device for rotary tool - Google Patents
Axial positioning device for rotary tool Download PDFInfo
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- CN119347463A CN119347463A CN202411518335.2A CN202411518335A CN119347463A CN 119347463 A CN119347463 A CN 119347463A CN 202411518335 A CN202411518335 A CN 202411518335A CN 119347463 A CN119347463 A CN 119347463A
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- cutter
- chuck
- hole
- positioning device
- handle
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Milling Processes (AREA)
Abstract
The invention relates to an axial positioning device for a revolving body cutter, which is characterized by comprising an aligning circular table (1), a spring chuck assembly (2), an outer diameter screw micrometer (4) and a connecting device (3), wherein the aligning circular table (1) is arranged at the outer side position of one end of a ruler frame (8) of the outer diameter screw micrometer (4) with an anvil, the anvil of the outer diameter screw micrometer (4) is removed, namely the anvil is replaced by the aligning circular table (1), and the quick installation and positioning of the cutter can be realized, and the consistency of the size and the shape of a product is ensured.
Description
Technical Field
The invention relates to an axial positioning device for a revolving body cutter, in particular to an axial positioning device for a revolving body cutter such as a cylindrical milling cutter, a reamer, a countersink, a tap, a twist drill, a center drill, a reamer and the like used for machining equipment such as a CNC machine tool, a robot and the like.
Background
In the cutting processing of mass products, CNC equipment and industrial robots are widely used as processing equipment, and the processing equipment is characterized in that the processing equipment automatically completes the cutting processing of product elements according to a processing program which is programmed in advance. After the processing equipment and the processing program are fixed, the shape and the dimensional accuracy of the product are determined by the relative position accuracy of the product and the cutter. If the axial position of the cutter changes, the cutting path of the cutter is affected, and the shape and the size of the product are changed. Therefore, the consistency of the mounting positions of the cutters directly determines the machining precision of the product.
At present, two main methods for ensuring the consistent axial installation positions of the revolving body cutters are ①, namely, the length of the extending cutter is measured approximately by utilizing a vernier depth gauge equivalent tool, then the cutters are installed according to the measured length, and the installation deviation of the cutters is measured through repeated trial cutting, so that the positions of the cutters are adjusted. ② The customized cutter is used for processing the positioning element on the cutter handle, so that the cutter can be only installed at a fixed position.
The two methods have the following problems that ① is complex to operate, low in efficiency and high in skill requirement on operators by means of trial cutting and calibrating the positions of the cutters, the cutters are replaced once in a plurality of hours, the custom cutters are used for guaranteeing the consistent installation positions, custom cutters and corresponding custom fixtures are required to be equipped, and the custom cutters and the custom fixtures are very small in production batch, so that the manufacturing cost is very high, and the price is often several times that of a large number of general cutters and fixtures.
Disclosure of Invention
Aiming at the problems existing in the prior art, the invention provides an axial positioning device for a revolving body cutter. The quick installation and positioning of the revolving body cutter can be realized, and the axis position of the cutter, namely the consistency of the extension length, is ensured.
An axial positioning device of a revolving body cutter is characterized by comprising an aligning round table 1, a collet chuck assembly 2, an outer diameter screw micrometer 4 and a connecting device 3; the spring chuck assembly 2 comprises a lock nut 5, an ER spring chuck 6 and a chuck handle 7, wherein the lock nut 5 is connected with the chuck handle 7 through threads, the ER spring chuck 6 is arranged in a space surrounded by the lock nut 5 and the chuck handle 7, the lock nut 5 is spirally connected to a spiral rod which is externally measured by the chuck handle 7, the lock nut 5 is spirally connected to the head of the ER spring chuck 6, one end of the chuck handle 7 is fixed at one end of the outside diameter screw micrometer 4 with a measuring rod 41 of the ruler frame 8 by the spring chuck assembly 2 through the connecting device 3, and the measuring rod 41 is inserted into a round hole in the center of the chuck handle 7;
During operation, the locking nut 5 of the revolving body cutter positioning device is loosened, the measuring rod 41 of the external diameter screw micrometer 4 is pushed to the corresponding position according to the value of the length of the cutter to be stretched, the measuring rod 41 is locked, the cutter 100 to be measured is inserted into the collet chuck assembly 2 through the aligning circular table 1, the cutter 100 to be measured is in actual contact with the end face of the measuring rod 41, the locking nut 5 is screwed, the cutter handle of the cutter 100 to be measured is inserted into the machine tool fixture 300, the end face of the aligning circular table 1 is tightly propped against and aligned with the end face 301 of the machine tool fixture, the machine tool fixture 300 is locked, and then the tool holder 300 is removed, so that the stretching length of the cutter 100 to be measured can be ensured to be equal to a specified value.
The aligning round table 1 is made of bearing steel GCr15, the heat treatment hardness is HRC 61-66, and the diameter of the center round hole is in clearance fit with the diameter of the measuring tool 100.
The chuck handle 7 is made of bearing steel GCr15, the heat treatment hardness is HRC 61-66, and the conical angle of the conical surface of the center conical hole is equal to the conical angle of the outer conical surface of the ER spring chuck 6.
After the whole device is fixed, the central hole of the round table 1 and the central taper hole of the chuck handle 7 are matched and processed, so that the two are ensured to be strictly coaxial.
The axial positioning device for the revolving body cutter has the advantages that the cutter mounting and positioning operation is simple, the repeated precision of the cutter mounting position can reach 0.01mm, the quick mounting and positioning of the cutter can be realized without using expensive custom cutters and custom clamps, and the consistency of the size and the shape of the product is ensured.
Drawings
FIG. 1 is a schematic diagram of a structure of a tool 100 to be tested according to the present invention;
FIG. 2 is an enlarged view of the structure A in FIG. 1;
FIG. 3 is a structural diagram of the aligning round table 1;
FIG. 4 is a block diagram of a chuck shank according to the present invention;
FIG. 5 is a schematic diagram showing the relative positions of the present invention, the tool holder 300 and the tool 100 under test during operation;
FIG. 6 is an enlarged view of the structure at B in FIG. 5;
Wherein 1 is an alignment round table, 2 is a spring chuck assembly, 3 is a connecting device, 4 is an outer diameter screw micrometer, 5 is a lock nut, 6 is an ER spring chuck, 7 is a chuck handle, 41 is a measuring rod, 100 is a measured tool, 300 is a machine tool clamp, 301 is a machine tool clamp end face, and 400 is the invention.
Detailed Description
The axial positioning device of the revolving body cutter consists of an aligning circular table 1, a spring chuck assembly 2, an outer diameter screw micrometer 4, a connecting device 3 and a fastener. The spring chuck assembly comprises a lock nut 5, an ER spring chuck 6 and a chuck handle 7, wherein the ER spring chuck 6 is positioned in a space surrounded by the lock nut 5 and the chuck handle 7. The specific structure is shown in fig. 1 and 2.
The alignment circular table 1 is in a shape of a cylinder connected with a U-shaped structure, a round hole slightly larger than the maximum diameter of the measured tool 100 is formed in the center of the cylinder, the diameter of the round hole is in clearance fit with the diameter of the measured tool 100, and the round hole is strictly coaxial with the measuring rod 41 of the external diameter screw micrometer 4. The part is used for aligning the invention with a clamp 300 on a machine tool, is arranged on the outer side of one end of a ruler frame 8 of the external diameter screw micrometer 1 with a measuring anvil, is made of bearing steel GCr15, and has heat treatment hardness HRC 61-66, and the specific structure is shown in figure 3.
The collet assembly 2 is used to grip the calibrated tool 100 and prevent tilting or shifting of the tool. The lock nut 5 and the ER spring collet 6 are both standardized products. The shape of the chuck handle 7 is two connected cylinders, the outer surface of the cylinder with small diameter is provided with a thread matched with the locking nut 5, the center of the cylinder is provided with a conical hole matched with the outer conical surface of the ER spring chuck 6, the conical surface in the conical hole is strictly coaxial with the measuring rod, and the structure of the chuck handle 7 is shown in figure 4. The clamp handle 7 is made of bearing steel GCr15, the heat treatment hardness is HRC 61-66,
An outside diameter micrometer 4 for measuring the value of the extension of the tool 100 to be calibrated, and also as a frame for the whole positioning device, provides the mounting position for the alignment circular table 1 and the collet assembly 2. The outer diameter screw micrometer 4 is modified by disassembling the anvil, expanding the anvil mounting hole into a through hole with a diameter slightly larger than the outer diameter of the largest measured tool, and processing the mounting hole and the mounting reference surface on the ruler frame 8 for mounting the alignment circular table 1 and the collet chuck assembly 2.
The ruler frame 8 of the external diameter screw micrometer 4 of the alignment circular table 1 is in interference fit with the fit precision H7/p6. The coaxiality precision phi is 0.08mm when the round hole of the round table 1, the inner conical surface of the chuck handle 7 and the measuring rod 41 of the outer diameter screw micrometer 4 are aligned. In order to ensure that the center hole of the aligning round table 1 and the center taper hole of the chuck handle 7 are coaxial, the whole device is matched for processing after being fixed.
Axial positioning of rotary body cutter the device using method comprises the following steps:
Tool axial position measurement, namely, loosening a lock nut 5 of a rotary body tool positioning device and retracting a measuring rod 41 of an external diameter screw micrometer 4. The measured tool 100 is inserted from a round hole in the center of the aligning round table 1, the aligning round table 1 is tightly propped against the front end face of the machine tool fixture 300, the locking spring chuck assembly 2 is locked, the tool 100 is tightly locked and held, and the numerical value of the extending length of the tool is measured by the external diameter screw micrometer 4.
Positioning the axial position of a cutter:
According to the value of the extension length of the cutter, the measuring rod 41 of the external diameter screw micrometer 4 is pushed to the corresponding position, and the position of the measuring rod 41 is locked. The tool 100 to be measured is inserted into the collet chuck assembly 2 from the alignment circular table 1, and is in actual contact with the measuring rod of the external diameter screw micrometer 4, and the locking nut 5 is screwed to firmly hold the tool 100. The shank of the tool 100 is inserted into the tool holder 300, and the end surface of the alignment table 1 is brought into abutment with the end surface of the holder 300, thereby locking the tool holder 300. The rotary body cutter positioning device is disassembled, the extension length of the cutter can be ensured to be equal to a specified value.
When the rotary tool axial positioning device is in use, the relative positions of the tool holder 300, the tool 100, and the rotary tool positioning device are as shown in fig. 2.
The invention is illustrated by one example.
An axial positioning device for a cutter with the diameter phi of 6 mm-phi of 6.5mm and the extending length of 20 mm-45 mm is taken as an embodiment.
The outer diameter screw micrometer is mechanical, the measuring range is 0-25 mm, the precision is not lower than 0.01mm, and the length of the opening of the ruler frame is not less than 40mm.
The lock nut 5 is ER 11-A-M14X0.75, is made of high-strength fastener steel SCM-440 and has heat treatment hardness HRC 41-45.
ER spring chuck 6, specification is ER11-6~7, within precision A level (0.015 mm), material spring steel 65Mn, HRC44~52.
The aligning round table 1 is made of bearing steel GCr15, heat treatment hardness HRC 61-66, and the diameter of a round hole in the middle is
The clamp handle is made of bearing steel GCr15, heat treatment hardness is HRC 61-66, the cone angle of the inner conical surface is 16 degrees+/-10', the surface profile degree phi is 0.04mm, the roughness Ra is 1.6, the coaxiality phi of the inner conical surface and the outer cylindrical surface is 0.06mm, the threads are M14 multiplied by 0.75 triangular threads, and the precision is 6h.
The outer diameter screw micrometer is modified, the anvil is removed, the anvil mounting hole is expanded to phi 6.7 plus or minus 0.04, and the diameter of the measuring rod is reduced to
The coaxiality phi of the inner conical surface of the chuck handle and the measuring rod is 0.05, and the coaxiality phi of the round hole of the aligning round table 1 and the mounting hole of the measuring anvil is 0.05.
According to the embodiment, the axial position accuracy of rotary body cutters such as cylindrical milling cutters, reamers, countersinks, screw taps, twist drills, center drills and reamer drills with the diameter of phi 6 mm-phi 6.5mm and the extension length of 20 mm-45 mm can be guaranteed to be 0.01mm, and the positioning and mounting time of the cutters is only a few minutes.
The invention relates to an axial positioning device for a revolving body cutter, in particular to an axial positioning device for a revolving body cutter such as a cylindrical milling cutter, a reamer, a countersink, a tap, a drill and the like used for machining equipment such as a CNC machine tool, a robot and the like. The axial positioning device of the revolving body cutter consists of an aligning circular table 1, a spring chuck assembly 2, an outer diameter screw micrometer 4 and a connecting device 3. The spring chuck assembly 2 comprises a lock nut 5, an ER spring chuck 6 and a chuck handle. The axial positioning device of the revolving body cutter has simple positioning operation, the repeated precision of the cutter mounting position can reach 0.01mm, the quick mounting and positioning of the cutter can be realized without using expensive custom cutters and custom fixtures, and the consistency of the size and the shape of the product is ensured.
Claims (4)
1. A rotary body cutter axial positioning device is characterized by comprising an aligning circular table (1), a spring chuck assembly (2), an outer diameter screw micrometer (4) and a connecting device (3), wherein the aligning circular table (1) is arranged on a screw rod which is externally measured by the screw micrometer (4), a ruler frame (8) with one end of an anvil is arranged at the outer side position, the anvil of the outer diameter screw micrometer (4) is removed, namely the aligning circular table (1) is replaced, the spring chuck assembly (2) comprises a locking nut (5), an ER spring chuck (6) and a chuck handle (7), the locking nut (5) is connected with the chuck handle (7) through threads, the ER spring chuck (6) is arranged in a space surrounded by the locking nut (5) and the chuck handle (7), the locking nut (5) is connected with the head of the ER spring chuck (6) in a screw mode, one end of the chuck handle (7) is fixed on the outer diameter screw micrometer (4) through the connecting device (3) through the connecting device (8), one end of the chuck handle (7) is inserted into a circular hole (41) which is arranged on the outer diameter of the tool (4), and the center of the tool is enlarged by a circular hole (1), and the diameter of the tool is enlarged by one end (41) which is larger than the center hole (100) of the tool is arranged The inner conical surface of the chuck handle (7) of the spring chuck assembly (2) and the measuring rod (41) of the external diameter screw micrometer (4) are strictly coaxial;
During operation, a lock nut (5) of the revolving body cutter positioning device is loosened, a measuring rod (41) of the external diameter screw micrometer (4) is pushed to a corresponding position according to the value of the length of the cutter to be stretched, the measuring rod (41) is locked, a measured cutter (100) is inserted into a collet chuck assembly (2) through an aligning circular table (1), the measured cutter (100) is practically contacted with the end face of the measuring rod (41), the lock nut (5) is screwed, a cutter handle of the measured cutter (100) is inserted into a machine tool clamp (300), the end face of the aligning circular table (1) is tightly propped against and aligned with the end face (301) of the machine tool clamp, the machine tool clamp (300) is locked, and then the tool clamp (400) is disassembled, so that the stretching length of the measured cutter (100) is ensured to be equal to a specified value.
2. The axial positioning device of the revolving body cutter according to claim 1, wherein the aligning round table (1) is made of bearing steel GCr15, the heat treatment hardness is HRC 61-66, and the diameter of the center round hole is in clearance fit with the diameter of the measuring cutter (100).
3. The axial positioning device of the revolving body cutter according to claim 1, wherein the chuck handle (7) is made of bearing steel GCr15, the heat treatment hardness is HRC 61-66, and the conical surface of the center conical hole is equal to the conical angle of the outer conical surface of the ER spring chuck (6).
4. The axial positioning device of the rotary body cutter according to claim 1, wherein the central hole of the alignment circular table (1) and the central taper hole of the chuck handle (7) are matched and machined after the whole device is fixed, so that the central hole and the central taper hole are strictly coaxial.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202411518335.2A CN119347463B (en) | 2024-10-29 | A rotary cutting tool axial positioning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202411518335.2A CN119347463B (en) | 2024-10-29 | A rotary cutting tool axial positioning device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN119347463A true CN119347463A (en) | 2025-01-24 |
| CN119347463B CN119347463B (en) | 2025-12-02 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB595196A (en) * | 1944-11-17 | 1947-11-28 | Arthur Offen | Improvements in or relating to boring tools |
| DE202004014045U1 (en) * | 2004-09-07 | 2004-11-18 | Schunk Gmbh & Co. Kg Spann- Und Greiftechnik | Measuring adapter for presetting length of tools in tool sockets includes elastic ring element fitting into ring groove in sleeve face of shaft and protruding outwards over sleeve face of shaft to contact wall of tool socket of too holder |
| US20090214303A1 (en) * | 2005-07-27 | 2009-08-27 | Haimer Gmbh | Positioning device for cutting tools in tool cases |
| KR20110090117A (en) * | 2010-02-02 | 2011-08-10 | 한전케이피에스 주식회사 | Micrometer with adjustable anvil |
| CN105215392A (en) * | 2015-11-17 | 2016-01-06 | 上海衡拓液压控制技术有限公司 | The adjustable interior locating device of smooth turning lathe collet |
| CN216607271U (en) * | 2022-01-17 | 2022-05-27 | 陕西泰盛能源工程有限公司 | Lathe cutter bar |
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB595196A (en) * | 1944-11-17 | 1947-11-28 | Arthur Offen | Improvements in or relating to boring tools |
| DE202004014045U1 (en) * | 2004-09-07 | 2004-11-18 | Schunk Gmbh & Co. Kg Spann- Und Greiftechnik | Measuring adapter for presetting length of tools in tool sockets includes elastic ring element fitting into ring groove in sleeve face of shaft and protruding outwards over sleeve face of shaft to contact wall of tool socket of too holder |
| US20090214303A1 (en) * | 2005-07-27 | 2009-08-27 | Haimer Gmbh | Positioning device for cutting tools in tool cases |
| KR20110090117A (en) * | 2010-02-02 | 2011-08-10 | 한전케이피에스 주식회사 | Micrometer with adjustable anvil |
| CN105215392A (en) * | 2015-11-17 | 2016-01-06 | 上海衡拓液压控制技术有限公司 | The adjustable interior locating device of smooth turning lathe collet |
| CN216607271U (en) * | 2022-01-17 | 2022-05-27 | 陕西泰盛能源工程有限公司 | Lathe cutter bar |
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