[0032] The present invention will be further described below in conjunction with the drawings and specific embodiments.
[0033] See figure 2 , image 3 , Figure 4 , The present invention is a deep hole internal thread dresser 2, which includes a positioning mandrel 2-2, a ferrule 2-6, a thread cutter 2-14, a fixing seat 2-12, a fixing sleeve 2-11 and a baffle 2 -15; The positioning mandrel 2-2 penetrates into the inner cavity of the fixed seat 2-12, and a conical surface 2-2-1 that matches the thread cutter 2-14 is provided at the lower end of the positioning mandrel 2-2; The baffle 2-15 is fixedly installed at the bottom of the fixed seat 2-12, and the baffle 2-15 is provided with a positioning spindle passing hole.
[0034] See figure 2 , image 3 , Figure 5 In the deep hole internal thread trimmer 2, the ferrule 2-6 is a stepped sleeve structure, which is embedded in the inner cavity of the fixed seat 2-12, and is locked and positioned by the locking nail 2-5, A vertical groove is arranged on the side wall of the large-diameter end sleeve of the ferrule.
[0035] See Picture 9 , Picture 10 , Picture 11 In the deep hole internal thread dresser 2, the upper end of the fixed seat 2-12 is provided with an operating handle 2-12-3, and the lower end is provided with four sets of tool accommodating grooves 2-12-1, the tool accommodating grooves 2 The cross section of -12-1 is a dovetail groove structure, and the outer wall of the fixed seat 2-12 is provided with a fixed seat external thread 2-12-2.
[0036] See Picture 12 , Figure 13 , Figure 14 In the deep hole internal thread dresser 2, the thread cutter 2-14 is composed of four sets of blades 2-14-1, and the four sets of blades 2-14-1 are all L-shaped structures; blade 2- The cross-section of the horizontal arm of 14-1 is a trapezoidal structure that matches the tool accommodating groove 2-12-1 of the dovetail structure, the blade 2-14-1 horizontal arm penetrates into the tool accommodating groove 2-12-1 of the dovetail structure, On the outer end of the blade horizontal arm, a cutting edge 2-14-3 with the same tooth profile as the deep hole internal thread 1-1 of the trimmed aircraft part 1 is provided, and a chip receiving groove 2-14 is provided at the cutting edge 2-14-3. -4; The vertical arm of the blade is provided with a wedge-shaped arc surface 2-14-2, and the wedge-shaped arc surface 2-14-2 of the vertical arm of the four sets of blades 2-14-1 is evenly arranged around the positioning mandrel.
[0037] See figure 2 , image 3 , Figure 8 In the deep hole internal thread trimmer 2, a fixed sleeve internal thread 2-11-1 is provided on the inner wall of the fixed sleeve 2-11, and the fixed sleeve internal thread 2-11-1 and the fixed seat external thread 2-12-2 Cooperate and assemble, the internal thread of the fixed sleeve 2-11-1 and the external thread of the fixed seat 2-12-2 have the same pitch as the deep hole internal thread 1-1 of the aircraft part 1 to be trimmed. 11 is provided with a fixed sleeve external thread 2-11-2 on the outer wall, and the fixed sleeve 2-11 is assembled with the trimmed aircraft part 1 through the outer fixed sleeve external thread 2-11-2.
[0038] See figure 2 , image 3 , Figure 4 In the deep hole internal thread trimmer 2, the positioning mandrel 2-2 is provided with a button 2-1 at the upper end, and the button 2-1 is assembled with the positioning mandrel 2-2 through a first pin 2-3 The middle and lower part of the positioning mandrel 2-2 is provided with a shoulder 2-2-2, a first compression spring 2-7 is provided between the sleeve 2-6 and the shoulder 2-2-2, the positioning The spindle 2-2 is further provided with a second pin 2-4, the second pin 2-4 and the first compression spring 2-7, and a vertical groove 2-6-1 provided on the ferrule 2-6 Cooperate to realize the locking positioning of the positioning spindle 2-2.
[0039] See figure 1 , figure 2 , image 3 , Image 6 , Figure 7 , The deep hole internal thread trimmer 2 of the present invention is also provided with a fixed sleeve locking mechanism, the fixed sleeve locking mechanism includes a screw sleeve 2-9, a sleeve 2-10, and a symmetrical arrangement of locking pin components 2-8 and the positioning sleeve 2-11-3 matched with the locking pin assembly; the threaded sleeve 2-9 is sleeved on the outside of the fixed seat 2-12 through a threaded fit, located above the fixed sleeve 2-11, on the screw The sleeve 2-9 is embedded with a sleeve 2-10 that cooperates with the locking pin assembly 2-8; the positioning sleeve 2-11-3 is embedded in the fixing sleeve 2-11; the locking pin assembly 2- 8 is provided with a pin 2-8-2, a locking handle 2-8-1 and a second compression spring 2-8-3; the upper end of the pin 2-8-2 is hinged to assemble the locking handle 2-8-1, The middle part of the pin 2-8-2 is provided with an annular flange 2-8-4, and the upper part of the pin 2-8-2 penetrates into the sleeve 2-10 embedded on the screw sleeve 2-9. A second compression spring 2-8-3 is installed between the top of 2-10 and the annular flange 2-8-4.
[0040] See Figure 1 to Figure 14 , The working process of the deep hole internal thread trimmer 2 of the present invention is:
[0041] 1. In the initial state, the second pin 2-4 of the positioning mandrel 2-2 is placed on the upper end surface of the ferrule 2-6, and the positioning mandrel is located at the top dead center position, arranged on the ferrule 2-6 and the shoulder 2- The first compression spring 2-7 between 2-2 is compressed, the blade return spring 2-13 is in a free state, and the four sets of blades 2-14-1 of the thread cutter 2-14 are retracted;
[0042] 2. Assemble the fixed sleeve 2-11 with the trimmed aircraft part 1 through the outer thread 2-11-2 of the outer fixed sleeve, pull up and slowly turn the button 2-1 forward to make the two ends of the second pin 2-4 fall into In the two vertical grooves 2-6-1 of the ferrule 2-6, the elastic force of the first compression spring 2-7 drives the positioning mandrel 2-2 to move downward, and the lower end conical surface of the positioning mandrel 2-2 2-1 Expand the four sets of blades 2-14-1 of the thread cutter 2-14, and at the same time, the thread cutter 2-14 penetrates to the bottom of the deep hole internal thread 1-1 of the aircraft part 1 to be trimmed;
[0043] 3. Slowly rotate the operating handle 2-12-3 in the opposite direction, so that the thread teeth of the blades of the four sets of blades 2-14-1 are matched with the internal thread 1-1 of the deep hole of the aircraft part 1 to be trimmed, and then slowly rotate the screw sleeve 2-9, align the locking pin assembly 2-8 in the fixed sleeve locking mechanism with the positioning sleeve 2-11-3 embedded in the fixed sleeve 2-11; then operate the locking pin assembly 2-8 to lock Tighten the handle 2-8-1, turn the locking handle 2-8-1 90° clockwise, and insert the pin 2-8-2 into the positioning sleeve 2-11-3 under the elastic force of the second compression spring 2-8-3 At this time, the screw sleeve 2-9, the fixed sleeve 2-11 and the trimmed aircraft part 1 are fixedly connected as a whole;
[0044] 4. Rotate the operating handle 2-12-3 on the fixed seat 2-12 counterclockwise to drive the fixed seat 2-12, positioning mandrel 2-2 and thread cutter 2-14 relative to the depth of the trimmed aircraft part 1. The inner thread 1-1 of the hole rotates in the reverse direction, and the deep hole inner thread 1-1 of the aircraft part 1 is repaired by the thread cutter 2-14;
[0045] 5. Repeat the above operation process until the deep hole internal thread 1-1 of the trimmed aircraft part 1 is completely repaired;
[0046] 6. Disassemble the deep hole internal thread trimmer 2 from the aircraft part 1 to be trimmed, and complete the trimming operation of the deep hole internal thread 1-1 of the aircraft part 1.
