CN-121989089-A - Positioning device for processing tool apron for flying shears and numerical control boring machine

CN121989089ACN 121989089 ACN121989089 ACN 121989089ACN-121989089-A

Abstract

The invention provides a positioning device of a tool apron for a processing flying shear and a numerical control boring machine, and relates to the technical field of workpiece fixing, wherein the positioning device comprises a circular rotary table and a circular positioning table; the circular positioning table is provided with an upper tool apron positioning groove and a lower tool apron positioning groove, the upper tool apron positioning groove and the lower tool apron positioning groove are distributed in a central symmetry mode, the cross section shapes of the upper tool apron positioning groove and the lower tool apron positioning groove comprise a short straight line section, a vertical straight line section and a long straight line section which are connected end to end in sequence, the circular positioning table is coaxially fixed with the circular rotary table, and the rotary mechanism drives the circular rotary table to rotate around the axis of the rotary table. The invention realizes the processing of the upper tool apron and the lower tool apron simultaneously, reduces the mounting and dismounting processes and improves the processing efficiency. Meanwhile, the rotation centers of the upper tool apron and the lower tool apron can be ensured to be consistent with the rotation center of the numerical control machining boring machine, so that the rotation center of the tool apron can be positioned during machining conveniently, and the machining precision is improved.

Inventors

Fang Qunchang
Lv Jingan
XUE HUI
WANG LI
CHI CHENG
YU ZHENGTAO

Assignees

一重集团(黑龙江)重工有限公司
一重集团大连工程技术有限公司
中国第一重型机械股份公司

Dates

Publication Date: 20260508
Application Date: 20260309

Claims (10)

1. The positioning device for the tool apron for processing the flying shears is characterized by comprising a circular rotary table (2) and a circular positioning table (1); The top surface of the circular positioning table (1) is provided with an upper cutter seat positioning groove (3) for installing an upper cutter seat (9) and a lower cutter seat positioning groove (4) for installing a lower cutter seat (10); The upper tool apron positioning groove (3) and the lower tool apron positioning groove (4) are distributed in a central symmetry mode by taking the center of the circle of the circular positioning table (1) as the center, and penetrate through the circumferential wall of the circular positioning table (1); The cross section shapes of the upper tool apron positioning groove (3) and the lower tool apron positioning groove (4) respectively comprise a short straight line section (26), a vertical straight line section (27) and a long straight line section (28) which are connected end to end in sequence; One end of the vertical straight line section (27) is vertically connected with one end of the short straight line section (26), and the other end of the vertical straight line section (27) is vertically connected with one end of the long straight line section (28); -the length of the long straight line segment (28) is greater than the length of the short straight line segment (26); the bottom walls of the upper tool apron positioning groove (3) and the lower tool apron positioning groove (4) are respectively provided with a notch (7) for accommodating a cutting tool; the circular positioning table (1) and the circular rotary table (2) are coaxially fixed; The circular rotary table (2) is used for being connected with a rotating mechanism, and the rotating mechanism is used for driving the circular rotary table (2) to rotate around the axis of the circular rotary table.
2. The positioning device for the tool apron for the flying shears according to claim 1, wherein the top surface of the circular positioning table (1) is also provided with an upper tool apron mounting groove (5) and a lower tool apron mounting groove (6); The upper tool apron mounting groove (5) is positioned at one side of the upper tool apron positioning groove (3) close to the long straight line section (28); The upper tool apron mounting groove (5) and the lower tool apron mounting groove (6) are distributed in a central symmetry mode by taking the circle center of the circular positioning table (1) as the center; The cross section shapes of the upper tool apron mounting groove (5) and the lower tool apron mounting groove (6) respectively comprise a first straight line section (30) and a second straight line section (31) which are connected end to end in sequence; One end of the first straight line segment (30) is vertically connected with one end of the second straight line segment (31), and the other end of the first straight line segment (30) and the other end of the second straight line segment (31) extend to the circumferential wall of the circular positioning table (1); -said first straight line segment (30) is parallel to said long straight line segment (28); A first upper cutter holder fixing threaded hole (8) is formed in the side wall, close to the upper cutter holder mounting groove (5), of the upper cutter holder positioning groove (3); The side wall of the lower cutter holder positioning groove (4) close to the lower cutter holder mounting groove (6) is provided with a first lower cutter holder fixing threaded hole.
3. The positioning device for a tool apron for a flying shear according to claim 1, further comprising a square positioning strip (11); the square positioning strip (11) is vertically arranged on the top surface of the circular positioning table (1); Two opposite vertical surfaces of the square positioning strip (11) are respectively provided with a plurality of second upper cutter holder fixing threaded holes (12) and a plurality of second lower cutter holder fixing threaded holes; a plurality of third upper cutter holder fixing threaded holes (13) and a plurality of third lower cutter holder fixing threaded holes are respectively arranged on the other two vertical surfaces of the square positioning strip (11); The second upper tool holder fixing threaded holes (12), the second lower tool holder fixing threaded holes, the third upper tool holder fixing threaded holes (13) and the third lower tool holder fixing threaded holes are distributed in rectangular arrays and are in two rows; The distance between the two rows of the second upper tool holder fixing threaded holes (12) is the same as the distance between the two rows of the second lower tool holder fixing threaded holes; The distance between the two rows of the third upper tool holder fixing threaded holes (13) is the same as the distance between the two rows of the third lower tool holder fixing threaded holes; the distance between the two rows of the second upper tool holder fixing threaded holes (12) is different from the distance between the two rows of the third upper tool holder fixing threaded holes (13).
4. The positioning device for a blade holder for a flying shear according to claim 3, further comprising a leveling mechanism; The leveling mechanism comprises a supporting column (14) and two jacks (15); The support column (14) and the jack (15) are vertically arranged on the top surface of the circular rotary table (2); The top surface of the supporting column (14) and the telescopic rod of the jack (15) are propped against the bottom surface of the circular positioning table (1); the support column (14) and the two jacks (15) are respectively positioned at three corners of a triangle.
5. The positioning device for a tool apron for a flying shear according to claim 4, further comprising a double-ended fixing screw (34); the top surface of the round rotary table (2) is provided with a T-shaped mounting groove (16), and the vertical section of the T-shaped mounting groove (16) is inverted T-shaped; The T-shaped mounting groove (16) is a through groove penetrating through the circular rotary table (2) in the horizontal direction; a first T-shaped mounting block is arranged in the T-shaped mounting groove (16), and is matched with the T-shaped mounting groove (16), and a lower threaded hole is formed in the top surface of the first T-shaped mounting block; The circular positioning table (1) is provided with a mounting hole (29), the mounting hole (29) comprises an upper mounting hole (291) and a lower mounting hole (292) which are sequentially connected from top to bottom, the upper mounting hole (291) and the lower mounting hole (292) are all circular, the diameter of the upper mounting hole (291) is larger than that of the lower mounting hole (292), and an annular step (32) is formed at the joint of the upper mounting hole (291) and the lower mounting hole (292); The axis of the upper mounting hole (291), the axis of the lower mounting hole (292), the axis of the circular positioning table (1) and the vertical axis of the square positioning strip (11) are overlapped; The lower end of the double-head fixing screw rod (34) is screwed in the lower threaded hole, the lower end of the double-head fixing screw rod (34) is sleeved with a lower fixing nut (36), and the bottom surface of the lower fixing nut (36) is tightly pressed on the top surface of the first T-shaped mounting block; the upper end of the double-head fixing screw rod (34) passes through the lower mounting hole (292) and is positioned in the upper mounting hole (291), the upper end of the double-head fixing screw rod (34) is sleeved with an upper fixing nut (35), and the bottom surface of the upper fixing nut (35) is pressed on the annular step (32); the bottom surface of the square positioning strip (11) is covered at the upper end of the upper mounting hole (291).
6. The positioning device for a tool apron of a flying shear according to claim 5, further comprising a hold-down mechanism; The pressing mechanism comprises a pressing block (23), a pressing plate (17), an upper double-headed screw (19) and a lower double-headed screw (21); a second T-shaped mounting block (24) is further arranged in the T-shaped mounting groove (16), the second T-shaped mounting block (24) is matched with the T-shaped mounting groove (16), a lower connecting hole is formed in the second T-shaped mounting block (24), and a rotary table connecting hole is formed in the circular rotary table (2); One end of the pressing plate (17) is pressed on the top surface of the square positioning strip (11), and the other end of the pressing plate is pressed on the top surface of the pressing block (23); the pressing plate (17) is provided with a waist-shaped hole; The upper end of the upper double-headed screw rod (19) is arranged in the waist-shaped hole in a penetrating way, the upper end of the upper double-headed screw rod (19) is sleeved with an upper connecting nut (18), and the bottom surface of the upper connecting nut (18) is tightly pressed on the top surface of the pressing plate (17); The lower end of the upper double-headed screw (19) and the upper end of the lower double-headed screw (21) are both screwed at two ends of the middle connecting nut (20) so as to fix the upper double-headed screw (19) and the lower double-headed screw (21); The lower end of the lower double-headed screw rod (21) penetrates through the lower connecting hole and the rotary table connecting hole, a first lower connecting nut (22) and a second lower connecting nut (33) are sleeved at the lower end of the lower double-headed screw rod (21), the bottom surface of the first lower connecting nut (22) is tightly pressed on the top surface of the second T-shaped mounting block (24), and the top surface of the second lower connecting nut (33) is propped against the bottom surface of the round rotary table (2).
7. The positioning device for a tool apron for a flying shear according to claim 6, wherein the number of the pressing mechanisms is two; The two pressing mechanisms are positioned on two opposite sides of the square positioning strip (11); the lower double-headed screw (21) of each pressing mechanism is connected with one second T-shaped mounting block (24) respectively.
8. The positioning device of a tool apron for a flying shear according to claim 6, wherein the pressing block (23) includes a sizing block (231) and a plurality of square blocks (232); The square blocks (232) are sequentially stacked from top to bottom, the sizing block (231) is placed on the uppermost square block (232), and the pressing plate (17) is pressed on the top surface of the sizing block (231).
9. The positioning device for the tool apron for the flying shears according to claim 1, wherein the two vertical corners of the upper tool apron positioning groove (3) and the two vertical corners of the lower tool apron positioning groove (4) are respectively provided with an avoidance groove (25), and the cross section of the avoidance groove (25) is arc-shaped.
10. A numerical control boring machine, characterized by comprising a rotating mechanism and a positioning device of the tool apron for flying shears according to any one of claims 1 to 9; the rotating mechanism is connected with the circular rotary table (2) and is used for driving the circular rotary table (2) to rotate around the axis of the circular rotary table.

Description

Positioning device for processing tool apron for flying shears and numerical control boring machine Technical Field The invention relates to the technical field of workpiece fixing, in particular to a positioning device for a tool apron for machining flying shears and a numerical control boring machine. Background ‌ Flying shears are industrial equipment ‌ for rolling pieces (such as metal plates and bars) in transverse shearing motion, realize continuous cutting through synchronous moving shearing blades, and are applied to production lines of metallurgical steel rolling, papermaking and the like. The upper cutting edge and the lower cutting edge of the flying shear device are respectively fixed on the upper cutter holder and the lower cutter holder. When the upper cutter holder and the lower cutter holder are machined, 0.65-degree spiral machining curved surfaces are required to be machined on the upper cutter holder and the lower cutter holder. At present, when the tool apron for the flying shears is machined, the upper tool apron is installed on a rotating mechanism, the rotating mechanism drives the upper tool apron to rotate, and the cutting tool machines the upper tool apron. After the upper tool apron is machined, the upper tool apron is disassembled, then the lower tool apron is installed, and the lower tool apron is machined. During processing, the mounting and dismounting processes are complex, and the processing efficiency is low. Disclosure of Invention The invention solves the problems that when the upper tool apron and the lower tool apron for the flying shears are machined, the mounting and dismounting processes are complex, and the machining efficiency is low. In order to solve the problems, the invention provides a positioning device for a tool apron for processing flying shears and a numerical control boring machine. The invention provides a positioning device for a tool holder for a flying shear, which comprises a round rotary table and a round positioning table, wherein an upper tool holder positioning groove for installing an upper tool holder and a lower tool holder positioning groove for installing a lower tool holder are arranged on the top surface of the round positioning table, the upper tool holder positioning groove and the lower tool holder positioning groove are distributed in a central symmetry mode by taking the center of the round positioning table as the center and penetrate through the circumferential wall of the round positioning table, the cross sections of the upper tool holder positioning groove and the lower tool holder positioning groove respectively comprise a short straight line section, a vertical straight line section and a long straight line section which are sequentially connected end to end, the short straight line section and the long straight line section are arranged at intervals in parallel, one end of the vertical straight line section is vertically connected with one end of the short straight line section, the other end of the vertical straight line section is vertically connected with one end of the long straight line section, the length of the long straight line section is larger than that of the short straight line section, openings for accommodating a cutting tool are formed in the bottom wall of the round positioning groove and the round positioning groove, and the round positioning mechanism is coaxially connected with the rotary table, and the rotary mechanism is used for fixing the rotary mechanism around the rotary table. The circular positioning table comprises a circular positioning table body, wherein the circular positioning table body is characterized in that the circular positioning table body comprises a circular positioning table body, the circular positioning table body is arranged at one side, close to a long straight line section, of the circular positioning table body, an upper tool holder mounting groove and a lower tool holder mounting groove are arranged on the top surface of the circular positioning table body, the upper tool holder mounting groove and the lower tool holder mounting groove are arranged on one side, close to the long straight line section, of the upper tool holder positioning groove, are symmetrically distributed around the center of the circular positioning table body, the cross section of the upper tool holder mounting groove and the cross section of the lower tool holder mounting groove respectively comprise a first straight line section and a second straight line section which are sequentially connected end to end, one end of the first straight line section is perpendicularly connected with one end of the second straight line section, the other end of the first straight line section is parallel to the long straight line section, the other end of the second straight line section extends to the circumferential wall of the circular positioning table body, the first straight line section is parallel to the long s