CN-121514588-B - Clamping type high-precision counter bit tool

CN121514588BCN 121514588 BCN121514588 BCN 121514588BCN-121514588-B

Abstract

The invention discloses a clamping type high-precision counter bit tool applied to the field of counter bit tools, which comprises a radial bit-discharging transmission structure, wherein the radial bit-discharging transmission structure comprises a bit sliding table meshed with a half-tooth gear through a tooth slot, the bit sliding table realizes radial bit-discharging through a transmission shaft and a transmission assembly, and is matched with a tension spring for resetting after bit discharging, the clamping type high-precision counter bit tool also comprises a pressure sensor and a sensing column for detecting displacement pressure change, and a bit-feeding regulation and control unit for regulating the position of a supporting unit through a cylinder inserting column so as to improve the machining precision and efficiency, ensure that a bit main body can accurately reach a preset working height when the bit is discharged each time, effectively reduce the machining depth deviation caused by bit abrasion, realize real-time verification and automatic compensation of bit displacement of the bit, and effectively reduce manual intervention and downtime.

Inventors

FANG YU
HUANG JIALI
LIAO JIAWEI
LI YUXUAN
Tan Chiyi
LIU XUN
WANG ZHUOYA

Assignees

成都市技师学院(成都工贸职业技术学院、成都市高级技工学校、成都铁路工程学校)

Dates

Publication Date: 20260505
Application Date: 20260114

Claims (7)

1. The clamping type high-precision counter bit tool comprises a tool handle main body and a tool accessory (5) arranged on the tool handle main body, wherein the tool handle main body comprises a shell (1), a sliding groove is formed in one end of the shell (1), a tool sliding table (2) is connected in the sliding groove in a sliding mode, one end, far away from the tool sliding table (2), of the shell (1) is connected with a transmission shaft, the bottom end of the sliding groove is rotationally connected with a half-tooth gear (11), a tooth groove matched with the half-tooth gear (11) is formed in one end of the tool sliding table (2), and a transmission assembly is connected between the transmission shaft and the half-tooth gear (11), and the clamping type counter bit tool is characterized in that the tool sliding table (2) comprises a mounting plate (21), one end of the mounting plate (21) is connected with a sliding block main body (22) which slides relatively to the sliding groove, and the other end of the mounting plate (21) is provided with a strip-shaped groove for mounting the tool accessory (5) and a plurality of pairs of uniformly distributed fixing grooves; The upper end and the lower end of the sliding chute are fixedly connected with an upper limiting block (3) and a lower supporting block (4) respectively, the lower end of the upper limiting block (3) is fixedly connected with an induction column (31), the cutter sliding table (2) is jointed with the induction column (31) when driven by a half-tooth gear (11) to move to the maximum displacement position, two mounting holes are formed in the lower supporting block (4), a fixing unit (41) and a supporting unit (42) are respectively connected to the two mounting holes, an extension spring is connected between the fixing unit (41) and the cutter sliding table (2), and the cutter sliding table (2) is jointed with the supporting unit (42) after reset through the extension spring; The lower end of the shell (1) is fixedly connected with an anti-rotation accessory (6), the top end of the anti-rotation accessory (6) is connected with a feed regulating unit (7) matched with the supporting unit (42), and the feed regulating unit (7) is used for regulating the position of the supporting unit (42); The induction column (31) comprises a movable column (311), a limit groove matched with the movable column (311) is formed in the lower end of the upper limit block (3), an induction unit (312) is connected to the bottom end of the limit groove, a compression spring is connected between the induction unit (312) and the movable column (311), a pressure sensor is integrated on the induction unit (312), and the induction unit (312) is electrically connected with the feed regulation and control unit (7).
2. The clamping type high-precision counter bit tool as claimed in claim 1, wherein the transmission assembly comprises a transmission shaft (12) rotatably connected in the shell (1), two ends of the transmission shaft (12) are respectively connected with a shank rod and a driving gear, a worm and a worm wheel shaft for transmission are connected between the driving gear and the half-tooth gear (11), and the worm wheel shaft is meshed with the half-tooth gear (11).
3. The clamping type high-precision counter bit tool as claimed in claim 1, wherein the tool attachment (5) comprises a base plate (51), a damping sliding block matched with the strip-shaped groove is fixedly connected to the base plate (51), an internal threaded joint (52) is fixedly connected to the base plate (51), a fixing screw is detachably connected between the base plate (51) and the fixing groove, and a tool main body (53) is connected to the internal threaded joint (52) in a threaded mode.
4. The clamping type high-precision counter bit tool as claimed in claim 1, wherein the mounting hole comprises a lower half part provided with an internal thread and a smooth upper half part, and the inner diameter of the lower half part is larger than that of the upper half part.
5. The clamping type high-precision counter bit tool as claimed in claim 4, wherein the fixing unit (41) is in threaded connection with the lower half part of the mounting hole, the supporting unit (42) is in sliding connection with the upper half part of the mounting hole, a supporting cover (421) in threaded connection with the lower half part of the mounting hole is arranged on the lower side of the supporting unit (42), and a round hole is formed in the middle of the supporting cover (421).
6. The clamping type high-precision counter bit tool as claimed in claim 5, wherein the feed regulating unit (7) comprises a cylinder (71), and a plug post matched with the round hole is connected to the telescopic end of the cylinder (71).
7. The clamping type high-precision counter bit tool as claimed in claim 6, further comprising a feed compensation system, wherein the feed compensation system comprises a terminal processor electrically connected with the feed regulation and control unit (7), and the terminal processor is connected with a data acquisition module, a data processing module, a control module and a data storage module; the data acquisition module is used for acquiring pressure data acquired at the induction column (31) and state data of the feed regulation and control unit (7); the data processing module is used for analyzing and calculating the data acquired by the data acquisition module so as to judge whether the number of times of the cutter and the adjustment precision meet the requirements; The control module is used for sending an execution instruction to the feed regulation and control unit (7) according to the output result of the data processing module and adjusting the position of the supporting unit (42) so as to compensate the cutter outlet distance; and the data storage module is used for storing basic parameters, real-time data and history records required by the operation of the system.

Description

Clamping type high-precision counter bit tool Technical Field The invention relates to the field of reverse countersink cutters, in particular to a clamping type high-precision reverse countersink cutter. Background The reverse countersink cutter is a special cutter for machining countersink planes and step surfaces on the back surface or the inner side of an orifice of a workpiece, is widely applied to the fields of automobiles, aerospace, engineering machinery and the like, and solves the machining requirements which are inaccessible to conventional countersink. The adjustable countersunk head is divided into an integral type, an adjustable type and a split type according to the structure, the integral type is high in rigidity and precision, the adjustable type countersunk head is suitable for machining of fixed specifications of countersunk heads, the adjustable type is radially adjusted through a blade to adapt to countersunk heads with different diameters, the flexibility is good, the split type is composed of a cutter handle and a replaceable countersink head, and the replaceable head body is used for machining of multiple specifications, so that the cost is reduced. The material is mostly high-speed steel, hard alloy or coating material, and is suitable for workpiece materials such as steel, aluminum alloy, titanium alloy and the like, so that the roughness and the dimensional accuracy of the machined surface are ensured. The invention CN114178629A discloses a mechanical automatic on-off reverse scraping cutter for machining a reverse countersink or counter bore, realizes the automatic machining task of the reverse countersink or counter bore, solves the troublesome work of installing and disassembling a cutter head when machining each hole, clamps and overturns a workpiece secondarily, saves a large amount of auxiliary time, is beneficial to high machining efficiency, reduces the operation risk caused by cutter changing, and simultaneously utilizes wireless sensing detection. The invention CN113369591B discloses a box wall through hole front and back surface flattening cutter, the friction bush and the protection bush are respectively pressed into and fixed on two ends of the basic bush, the protection bush passes through the corresponding box wall through hole, and the end cover, the support column, the cutter head, the basic bush, the friction bush and the protection bush are fixedly connected into a whole, so that the invention is suitable for processing various types of boxes and has good universality. When the reverse countersink cutter is used for machining, the machining precision of the reverse countersink cutter depends on the moving coordinate precision of the workbench to a great extent, the back and forth movement of the workbench inevitably generates return errors, and the cutter cannot be effectively compensated after being worn, so that the machining depth deviation is caused, and the stable high-precision machining requirement is difficult to maintain, so that the quality and the machining efficiency of a workpiece are both affected to a certain extent. Disclosure of Invention The invention aims at solving the problems that in the prior art, the accuracy of a counter bit tool is insufficient and the counter bit tool cannot be effectively compensated after abrasion by the synergistic effect of an upper limiting block with an induction column, a lower supporting block with a fixing unit and a supporting unit and a feed regulating and controlling unit. Meanwhile, the automatic compensation function of high-precision anti-countersink machining and cutter abrasion is realized. In order to solve the problems, the invention adopts the following technical scheme. The utility model provides a joint formula high accuracy anti-countersink cutter, includes the handle of a knife main part and installs the cutter annex on the handle of a knife main part, and the handle of a knife main part includes the casing, and the one end of casing has been seted up the spout, and sliding connection has the cutter slip table in the spout, and the one end that the cutter slip table was kept away from to the casing is connected with the transmission shaft, and the bottom rotation of spout is connected with half tooth gear, the tooth's socket that matches with half tooth gear has been seted up to the one end of cutter slip table, is connected with drive assembly between transmission shaft and the half tooth gear, and the cutter slip table includes the mounting panel, and the one end of mounting panel is connected with the slider main part that slides relatively with the spout, and the bar groove and the many pairs of evenly distributed's of fixed slots that are used for installing the cutter annex are seted up to the other end of mounting panel; The lower support block is provided with two mounting holes, a fixing unit and a support unit are respectively connected with the two mounting holes, a tension spring is