Screw nut seat processing tooling

Abstract

The present invention discloses a screw nut seat processing tool, comprising a screw nut seat to be processed, a base fixed to a machining center, and a workbench fixedly connected to the base, wherein the screw nut seat comprises an L-shaped thin-walled portion and a thick-walled portion connected integrally, and a first positioning assembly, a first clamping assembly, a second clamping assembly, and a second positioning assembly are sequentially installed on the workbench in a clockwise direction. The present invention respectively arranges a first positioning assembly, a first clamping assembly, a second clamping assembly, and a second positioning assembly on the same workbench, which are respectively suitable for fixing and clamping the thin-walled portion and the thick-walled portion, and can achieve stable and reliable fixing and clamping of workpieces according to different machining procedures and related process requirements, and can achieve synchronous processing of the thin-walled portion and the thick-walled portion through a set of machining tooling and one-time fixing and clamping, thereby saving costs and occupying space and improving machining efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of screw rod and nut seat processing, in particular to a screw rod and nut seat processing tool. Background Art

[0002] Doors are a crucial component of urban rail transit vehicles and are closely linked to operational safety. The door system consists of doors, mechanical locks, emergency unlocking devices, transmissions, and isolation locking devices. These doors primarily include the passenger compartment door, driver's cab door, partition door between the driver's cab and passenger compartment, and emergency evacuation doors. The screw nut housing, a crucial structural component in the door system, typically undergoes machining after being cast into a blank.

[0003] At present, the cast screw nut seat blank includes an L-shaped thin-walled part and a thick-walled part that are integrally connected. In the machining center, it is necessary to turn and mill the surfaces of the thin-walled part and the thick-walled part respectively, and to drill and bore the thin-walled part and the thick-walled part respectively. This requires the use of machining tooling. Before machining, the thin-walled part and the thick-walled part are fixed and clamped respectively so that they are stably and reliably fixed to the machining center, which is conducive to the implementation of subsequent machining.

[0004] Since the processing locations and processing procedures of thin-walled parts and thick-walled parts are different, it is often necessary to design corresponding processing tooling separately for thin-walled parts and thick-walled parts. This not only increases costs and occupies more space, but also requires multiple clamping, resulting in low processing efficiency. Summary of the Invention

[0005] The purpose of the present invention is to overcome the defects and shortcomings of the prior art and provide a screw nut seat processing tooling. Based on the ability to achieve stable and reliable fixation and clamping of workpieces, the thin-walled and thick-walled parts can be processed simultaneously through a set of processing tooling and one-time fixation and clamping, thereby saving costs and space and improving processing efficiency.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A screw nut seat processing tool comprises a screw nut seat to be processed, a base fixed to a machining center, and a workbench fixedly connected to the base, wherein the screw nut seat comprises an L-shaped thin-walled portion and a thick-walled portion connected integrally, and is characterized in that a first positioning assembly, a first clamping assembly, a second clamping assembly, and a second positioning assembly are sequentially installed on the workbench in a clockwise direction.

[0008] The first positioning assembly is used to fix the thick-walled portion so that the outer side of the thin-walled portion is arranged upward. The workbench is provided with a floating support mechanism on the front side of the first positioning assembly for supporting the inner side of the thin-walled portion from the bottom side. The workbench is installed on one side of the first positioning assembly for clamping the outer side of the thin-walled portion from the top side.

[0009] The first clamping assembly is used to clamp the screw nut seat so that one side of the screw nut seat is set upward; the second clamping assembly is used to clamp the thick-walled part so that the inner side of the thick-walled part is set upward; the second positioning assembly is used to fix the thin-walled part from one side, and support and fix the inner side of the thick-walled part from the bottom side, so that the outer side of the thick-walled part is set upward.

[0010] Furthermore, the first positioning assembly includes a first base, a first vertical plate, a positioning block, a first positioning column and a first cylinder, the first base is fixedly mounted on the upper surface of the workbench, the first vertical plate is fixedly connected to the first base and is perpendicular to the first base, the positioning block is fixedly connected to one side of the front side of the first vertical plate and is perpendicular to the first vertical plate; the first cylinder is fixedly mounted on the rear side of the first vertical plate, the piston rod of the first cylinder extends horizontally backward and is fixedly connected to the first cross plate, the end of the first cross plate is fixedly connected to the first telescopic rod extending forward, the first telescopic rod passes through the first vertical plate and extends to the other side of the front side of the first vertical plate, and the first positioning column is fixedly connected to the front end of the first telescopic rod.

[0011] Furthermore, the first positioning column has a tapered structure that is larger at the front and smaller at the back.

[0012] Furthermore, the floating support mechanism includes a seat sleeve, a second cylinder, a compression sleeve, a push rod, a pin, a spring collet, a pressure cap and a support head. The seat sleeve is fixedly mounted on the upper surface of the workbench, and the second cylinder is fixedly mounted on the lower surface of the workbench. The piston rod of the second cylinder passes through the workbench upward and extends to the bottom of the seat sleeve; the compression sleeve, push rod and pin are all located inside the seat sleeve, the bottom end of the compression sleeve is fixedly connected to the free end of the piston rod of the second cylinder, and the lower end of the push rod is slidably sleeved on the compression sleeve The lower end of the pin is inserted into the bottom end of the compression sleeve, and the upper end of the pin is slidably sleeved on the lower end of the push rod; the lower part of the spring chuck is located in the upper port of the compression sleeve, and is beveled with the inner edge of the upper port of the compression sleeve. The lower part of the pressure cap is fixedly sleeved on the upper end of the seat sleeve, and the upper part of the pressure cap is sleeved on the upper part of the spring chuck, and is beveled with the upper part of the spring chuck. The upper end of the push rod passes through the compression sleeve and the spring chuck in sequence and extends out, and the support head is fixedly connected to the extended end of the push rod.

[0013] Furthermore, a first spring is mounted on the outside of the pin between the bottom end of the push rod and the inner bottom surface of the compression sleeve, an annular step is provided in the middle of the inner wall of the compression sleeve, and a second spring is mounted on the outside of the push rod between the bottom end of the spring chuck and the lateral step surface of the annular step.

[0014] Furthermore, the top end of the seat cover is fixedly sleeved with a dust cap.

[0015] Furthermore, the first clamping assembly includes a second base, two second vertical plates distributed in an L shape, a limit block, a right-angled triangle top block and a third cylinder. The second base is fixedly mounted on the upper surface of the workbench, and the two second vertical plates and the limit block are fixedly connected to the second base and are perpendicular to the second base; the limit block is located on the hypotenuse of the right-angled triangle where the two second vertical plates are located, and the right-angled triangle top block is located on the inner side of the limit block, and the hypotenuse of the right-angled triangle top block and the inner side surface of the limit block are beveled. The third cylinder is fixedly mounted on the lower surface of the workbench, and the piston rod of the third cylinder passes through the workbench upward and is fixedly connected to the bottom of the right-angled triangle top block.

[0016] Furthermore, the bottoms of the inner sides of the two second vertical plates are fixedly connected with cross bars for supporting the other side of the screw nut seat from the bottom.

[0017] Furthermore, the second clamping assembly includes a third base, two second telescopic rods, two pressure blocks and a third cylinder. The third base is fixedly mounted on the upper surface of the workbench, and the third cylinder is fixedly mounted on the lower surface of the workbench. The piston rod of the third cylinder extends vertically downward and is fixedly connected to the second cross plate. The lower ends of the two second telescopic rods are respectively fixedly connected to the two ends of the second cross plate, and the upper ends of the two second telescopic rods pass through the workbench upward and extend to both sides above the third base. The two pressure blocks are respectively fixedly connected to the upper ends of the two second telescopic rods.

[0018] Furthermore, the second positioning assembly includes a third vertical plate and a fourth vertical plate arranged opposite to each other, a fourth cylinder, a transverse push rod, two second positioning columns and two support columns, the third vertical plate and the fourth vertical plate are fixedly connected to the workbench and are perpendicular to the workbench; the fourth cylinder is fixedly installed on the inner side surface of the third vertical plate, the piston rod of the fourth cylinder extends toward the third vertical plate, and its end is fixedly connected to the vertical plate, the transverse push rod is fixedly connected to the bottom of the vertical plate, the two second positioning columns are fixedly connected to the inner side surface of the fourth vertical plate, and the two support columns are fixedly connected to the workbench and are located between the third vertical plate and the fourth vertical plate.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] The present invention respectively arranges a first positioning component, a first clamping component, a second clamping component and a second positioning component on the same workbench, which are respectively suitable for fixing and clamping thin-walled parts and thick-walled parts. According to different processing procedures and related process requirements, stable and reliable fixing and clamping of workpieces can be achieved, and synchronous processing of thin-walled parts and thick-walled parts can be achieved through a set of processing tooling and one-time fixing and clamping, thereby saving costs and occupied space and improving processing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 The structure of the present invention is schematically shown Figure 1 .

[0022] Figure 2 It is a structural schematic diagram of the first positioning component in the present invention.

[0023] Figure 3 It is a structural schematic diagram of the floating support mechanism in the present invention.

[0024] Figure 4 It is a structural schematic diagram of the first clamping assembly in the present invention.

[0025] Figure 5 It is a structural schematic diagram of the second clamping assembly in the present invention.

[0026] Figure 6 Schematic diagram of the structure of the second positioning component in the present invention.

[0027] Figure 7 It is a structural cross-sectional view of the present invention.

[0028] Figure 8 The structure of the present invention is schematically shown Figure 2 .

[0029] Figure 9 It is a schematic structural diagram of the present invention when clamping a workpiece (screw nut seat).

[0030] Figure 10 Schematic diagram of the structure of the workpiece (screw nut seat) clamped by the present invention Figure 1 .

[0031] Figure 11 Schematic diagram of the structure of the workpiece (screw nut seat) clamped by the present invention Figure 2 . DETAILED DESCRIPTION

[0032] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0033] See also Figure 1-11 A screw nut seat processing tool includes a screw nut seat 1 to be processed, a base 2 fixed to a machining center, and a workbench 3 fixedly connected to the base 2. The screw nut seat 1 includes an L-shaped thin-walled portion 101 and a thick-walled portion 102 that are integrally connected. A first positioning component 4, a first clamping component 5, a second clamping component 6, and a second positioning component 7 are sequentially installed on the workbench 3 in a clockwise direction.

[0034] The first positioning assembly 4 is used to fix the thick-walled portion 102 so that the outer side of the thin-walled portion 101 is facing upward. A floating support mechanism 8 is provided on the workbench 3 on the front side of the first positioning assembly 4 for supporting the inner side of the thin-walled portion 101 from the bottom. A rotary clamping cylinder 9 is installed on one side of the first positioning assembly 4 on the workbench 3 for clamping the outer side of the thin-walled portion 101 from the top, thereby enabling turning and milling of the outer side of the thin-walled portion 101, and drilling and boring of the thin-walled portion 101.

[0035] The first clamping component 5 is used to clamp the screw nut seat 1 so that one side surface of the screw nut seat 1 is set upward, so as to realize turning and milling processing on the side surface of the screw nut seat 1; the second clamping component 6 is used to clamp the thick-walled portion 102 so that the inner side surface of the thick-walled portion 102 is set upward, so as to realize turning and milling processing on the inner side surface of the thick-walled portion 102, and realize drilling and boring processing on the thick-walled portion 102; the second positioning component 7 is used to fix the thin-walled portion 101 from one side, and support and fix the inner side surface of the thick-walled portion 102 from the bottom side, so that the outer side surface of the thick-walled portion 102 is set upward, so as to realize turning and milling processing on the outer side surface of the thick-walled portion 102, and realize drilling and boring processing on the thick-walled portion 102.

[0036] In the present invention, the first positioning assembly 4 includes a first base 41, a first vertical plate 42, a positioning block 43, a first positioning column 44 and a first cylinder 45. The first base 41 is fixedly installed on the upper surface of the workbench 3, the first vertical plate 42 is fixedly connected to the first base 41 and is perpendicular to the first base 41. The positioning block 43 is fixedly connected to one side of the front side of the first vertical plate 42 and is perpendicular to the first vertical plate 42; the first cylinder 45 is fixedly installed on the rear side of the first vertical plate 42, the piston rod of the first cylinder 45 extends horizontally backward and is fixedly connected to the first cross plate 46, the end of the first cross plate 46 is fixedly connected to the first telescopic rod 47 extending forward, the first telescopic rod 47 passes through the first vertical plate 42 and extends to the other side of the front side of the first vertical plate 42, and the first positioning column 44 is fixedly connected to the front end of the first telescopic rod 47.

[0037] In the present invention, the first positioning post 44 has a tapered structure that is larger at the front and smaller at the back, so as to better fix the thick-walled portion 102 and quickly release the fixation of the thick-walled portion 102 .

[0038] Therefore, after the screw nut seat 1 is placed on the first base 41, the bottom surface of the thick-walled portion 102 abuts against the upper surface of the first base 41, the outer side surface of the thick-walled portion 102 abuts against the front side surface of the first vertical plate 42, and one side of the thick-walled portion 102 abuts against the inner side surface of the positioning block 43, forming three-surface positioning, and the piston rod of the first cylinder 45 is extended to drive the first cross plate 46 to move backward, driving the first telescopic rod 47 and the first positioning column 44 to retract (move backward), so that the front end (large end) of the first positioning column 44 abuts against the other side of the thick-walled portion 102, forming a point positioning, thereby fixing the thick-walled portion 102 and setting the outer side surface of the thin-walled portion 101 upward.

[0039] By retracting the piston rod of the first cylinder 45, the first transverse plate 46 is driven forward, causing the first telescopic rod 47 and the first positioning column 44 to extend (move forward), releasing the positioning of the front end (large end) of the first positioning column 44 on the other side of the thick-walled portion 102, and the screw nut seat 1 can be removed (the turning and milling processing of the outer side surface of the thin-walled portion 101 and the drilling and boring processing of the thin-walled portion 101 are completed).

[0040] In the present invention, the floating support mechanism 8 includes a seat sleeve 81, a second cylinder 82, a pressing sleeve 83, a push rod 84, a pin 85, a spring collet 86, a pressure cap 87 and a support head 88. The seat sleeve 81 is fixedly mounted on the upper surface of the workbench 3, and the second cylinder 82 is fixedly mounted on the lower surface of the workbench 3. The piston rod of the second cylinder 82 passes through the workbench 3 upward and extends to the bottom 81 of the seat sleeve; the pressing sleeve 83, the push rod 84 and the pin 85 are all located inside the seat sleeve 81, the bottom end of the pressing sleeve 83 is fixedly connected to the free end of the piston rod of the second cylinder 82, and the lower end of the push rod 84 is slidingly sleeved. Inside the compression sleeve 83, the lower end of the pin 85 is inserted into the bottom end of the compression sleeve 83, and the upper end of the pin 85 is slidably sleeved on the lower end of the push rod 84; the lower part of the spring collet 86 is located in the upper port of the compression sleeve 83, and is beveled with the inner edge of the upper port of the compression sleeve 83. The lower part of the pressure cap 87 is fixedly sleeved on the upper end of the seat sleeve 83, and the upper part of the pressure cap 87 is sleeved on the upper part of the spring collet 86, and is beveled with the upper part of the spring collet 86. The upper end of the push rod 84 passes through the compression sleeve 83 and the spring collet 86 in sequence and extends out, and the support head 88 is fixedly connected to the extended end of the push rod 84.

[0041] In the present invention, a first spring 89 is mounted on the outside of the pin 85 between the bottom end of the push rod 84 and the inner bottom surface of the clamping sleeve 83, an annular step is provided in the middle of the inner wall of the clamping sleeve 83, and a second spring 810 is mounted on the outside of the push rod 84 between the bottom end of the spring clamp 86 and the lateral step surface of the annular step.

[0042] Therefore, when the thick-walled portion 102 is fixed, the thin-walled portion 101 is pressed against the floating support mechanism 8. Under the action of gravity, the support head 88 squeezes the push rod 84 to move slightly downward, and the first spring 89 is slightly compressed. At this time, the piston rod of the second cylinder 82 is extended to push the clamping sleeve 83 upward, and the second spring 810 is compressed. During the upward movement, the clamping sleeve 83 squeezes the lower part of the spring collet 86, causing the lower part of the spring collet 86 to contract, holding the push rod 84 tightly, and fixing the push rod 84. On the basis of supporting the inner side surface of the thin-walled portion 101 from the bottom side, a constant supporting force is applied to the thin-walled portion 101, so that the thin-walled portion 101 will not shake or vibrate due to the pressure of the machining tool during the machining process, so as to ensure the machining accuracy.

[0043] In the present invention, a dust cap 811 is fixedly mounted on the top end of the seat cover 81 to provide protection and dustproofing.

[0044] In the present invention, the first clamping assembly 5 includes a second base 51, two second vertical plates 52 distributed in an L shape, a limit block 53, a right-angled triangle top block 54 and a third cylinder 55. The second base 51 is fixedly installed on the upper surface of the workbench 3. The two second vertical plates 52 and the limit block 53 are fixedly connected to the second base 51 and are perpendicular to the second base 51; the limit block 53 is located on the hypotenuse of the right-angled triangle where the two second vertical plates 52 are located, and the right-angled triangle top block 54 is located on the inner side of the limit block 53, and the hypotenuse of the right-angled triangle top block 54 and the inner side surface of the limit block 53 are inclined. The third cylinder 55 is fixedly installed on the lower surface of the workbench 3, and the piston rod of the third cylinder 55 passes through the workbench 3 upward and is fixedly connected to the bottom of the right-angled triangle top block 54.

[0045] Therefore, after the screw nut seat 1 is placed on the second base 51, the outer side surfaces of the thin-walled portion 101 and the thick-walled portion 102 are respectively in contact with the inner side surfaces of the two second vertical plates 52, and the piston rod of the third cylinder 55 is retracted to drive the right-angled triangle top block 54 to move downward. During this process, the right-angled triangle top block 54 gradually approaches and finally abuts against the inner side surfaces of the thin-walled portion 101 and the thick-walled portion 102, thereby clamping the screw nut seat 1 and setting one side of the screw nut seat 1 upward.

[0046] The piston rod of the third cylinder 55 is extended to drive the right-angled triangle top block 54 to move upward. During this process, the right-angled triangle top block 54 gradually moves away from the inner side surfaces of the thin-walled portion 101 and the thick-walled portion 102, thereby releasing the clamping of the screw nut seat 1 and removing the screw nut seat 1 (completing the turning and milling processing of the side surface of the screw nut seat 1).

[0047] In the present invention, the bottom of the inner side surfaces of the two second vertical plates 52 are fixedly connected with a cross bar 56, which is used to support the other side surface of the screw nut seat 1 from the bottom side, so as to ensure that one side surface of the screw nut seat 1 (the surface to be processed) can be exposed, so as to facilitate turning and milling of the side surface of the screw nut seat 1.

[0048] In the present invention, the second clamping assembly 6 includes a third base 61, two second telescopic rods 62, two pressure blocks 63 and a third cylinder 64. The third base 61 is fixedly installed on the upper surface of the workbench 3, and the third cylinder 64 is fixedly installed on the lower surface of the workbench 3. The piston rod of the third cylinder 64 extends vertically downward and is fixedly connected to the second cross plate 65. The lower ends of the two second telescopic rods 62 are respectively fixedly connected to the two ends of the second cross plate 65. The upper ends of the two second telescopic rods 62 pass through the workbench 3 upward and extend to both sides above the third base 61. The two pressure blocks 63 are respectively fixedly connected to the upper ends of the two second telescopic rods 62.

[0049] Therefore, after the screw nut seat 1 is placed on the third base 61, the outer side surface of the thick-walled portion 102 is abutted against the upper surface of the third base 61, and the piston rod of the third cylinder 55 is extended to drive the second cross plate 65 to move downward, driving the two second telescopic rods 62 and the two pressure blocks 63 to retract (move downward) until the thick-walled portion 102 is clamped from both sides, thereby clamping the thick-walled portion 102 and setting the inner side surface of the thick-walled portion 102 upward.

[0050] By retracting the piston rod of the third cylinder 55, the second cross plate 65 is driven to move upward, causing the two second telescopic rods 62 and the two pressure blocks 63 to extend (move upward), releasing the clamping of the thick-walled portion 102, and the screw nut seat 1 can be removed (the turning, milling, drilling and boring processes on the inner side of the thick-walled portion 102 are completed).

[0051] In the present invention, the second positioning assembly 7 includes a third vertical plate 71 and a fourth vertical plate 72 arranged opposite to each other, a fourth cylinder 73, a horizontal push rod 74, two second positioning columns 75 and two support columns 76. The third vertical plate 71 and the fourth vertical plate 72 are both fixedly connected to the workbench 3 and are perpendicular to the workbench 3; the fourth cylinder 73 is fixedly installed on the inner side surface of the third vertical plate 71, and the piston rod of the fourth cylinder 73 extends toward the third vertical plate 72, and its end is fixedly connected to the vertical plate 77, the horizontal push rod 74 is fixedly connected to the bottom of the vertical plate 77, the two second positioning columns 75 are both fixedly connected to the inner side surface of the fourth vertical plate 72, and the two support columns 76 are fixedly connected to the workbench 3 and are located between the third vertical plate 71 and the fourth vertical plate 72.

[0052] Therefore, after the screw nut seat 1 is placed on the workbench 3, the outer side surface of the thin-walled part 101 is abutted against the inner side surface of the fourth vertical plate 72, so that the two second positioning columns 75 are respectively inserted into the through holes processed on the thin-walled part 101, and the two support columns 76 respectively support the two grooves on both sides of the inner side surface of the thick-walled part 102 from the bottom side. By extending the fourth cylinder 73, the vertical plate 77 and the horizontal push rod 74 are driven to extend (move to the left) until the end of the horizontal push rod 74 abuts against the inner side surface of the thin-walled part 101, thereby fixing the thin-walled part 101 from one side and supporting and fixing the inner side surface of the thick-walled part 102 from the bottom side, and at the same time making the outer side surface of the thick-walled part 102 face upward.

[0053] By retracting the fourth cylinder 73, the vertical plate 77 and the horizontal push rod 74 are driven to retract (move to the right), releasing the fixation of the thin-walled part 101, and the screw nut seat 1 can be removed (the turning, milling and drilling and boring of the outer side of the thick-walled part 102 are completed).

[0054] The present invention will be further described below with reference to the accompanying drawings:

[0055] Before processing, the screw nut seat 1 is placed on the first base 41 so that the bottom surface of the thick-walled portion 102 abuts against the upper surface of the first base 41, the outer side surface of the thick-walled portion 102 abuts against the front side surface of the first vertical plate 42, and one side of the thick-walled portion 102 abuts against the inner side surface of the positioning block 43, forming three-surface positioning.

[0056] Next, the piston rod of the first cylinder 45 extends, driving the first transverse plate 46 to move backward, driving the first telescopic rod 47 and the first positioning column 44 to retract (move backward), so that the front end (large end) of the first positioning column 44 abuts against the other side of the thick-walled portion 102, forming a point positioning, thereby fixing the thick-walled portion 102 and making the outer side surface of the thin-walled portion 101 face upward.

[0057] Then, the piston rod of the rotary clamping cylinder 9 rotates and then retracts until the outer side surface of the thin-walled portion 101 is clamped from the upper side.

[0058] At the same time, the thin-walled portion 101 is pressed against the floating support mechanism 8. Under the action of gravity, the support head 88 squeezes the push rod 84 to move slightly downward, and the first spring 89 is slightly compressed. At this time, the piston rod of the second cylinder 82 extends, pushing the clamping sleeve 83 to move upward, and the second spring 810 is compressed. During the upward movement, the clamping sleeve 83 squeezes the lower part of the spring collet 86, causing the lower part of the spring collet 86 to contract, holding the push rod 84 tightly, and fixing the push rod 84. On the basis of supporting the inner side surface of the thin-walled portion 101 from the bottom side, a constant supporting force is applied to the thin-walled portion 101, so that the thin-walled portion 101 will not shake or vibrate due to the pressure of the machining tool during the machining process.

[0059] Then, the piston rod of the rotary clamping cylinder 9 is first extended and then rotated in the opposite direction, thereby releasing the clamping of the outer side surface of the thin-walled portion 101 .

[0060] Then, the outer side surface of the thin-walled portion 101 is subjected to turning and milling, and the thin-walled portion 101 is subjected to drilling and boring.

[0061] After completing the above processing, the piston rod of the first cylinder 45 retracts, driving the first cross plate 46 to move forward, driving the first telescopic rod 47 and the first positioning column 44 to extend (move forward), releasing the front end (large end) of the first positioning column 44 from positioning on the other side of the thick-walled portion 102, and the screw nut seat 1 can be removed (the turning and milling processing of the outer surface of the thin-walled portion 101 and the drilling and boring processing of the thin-walled portion 101 are completed).

[0062] Then, the screw nut seat 1 is placed on the second base 51 so that the outer side surfaces of the thin-walled portion 101 and the thick-walled portion 102 are respectively in contact with the inner side surfaces of the two second vertical plates 52 .

[0063] Then, the piston rod of the third cylinder 55 retracts, driving the right-angled triangle top block 54 to move downward. During this process, the right-angled triangle top block 54 gradually approaches and finally abuts against the inner side surfaces of the thin-walled portion 101 and the thick-walled portion 102, thereby clamping the screw nut seat 1 and setting one side of the screw nut seat 1 upward.

[0064] Then, the side surface of the screw nut seat 1 is subjected to turning and milling.

[0065] After completing the above processing, the piston rod of the third cylinder 55 is extended to drive the right-angled triangle top block 54 to move upward. During this process, the right-angled triangle top block 54 gradually moves away from the inner side surfaces of the thin-walled portion 101 and the thick-walled portion 102, thereby releasing the clamping of the screw nut seat 1, and the screw nut seat 1 can be removed (completing the turning and milling processing of the side surface of the screw nut seat 1).

[0066] Then, the screw nut seat 1 is placed on the third base 61 so that the outer side surface of the thick-walled portion 102 abuts against the upper surface of the third base 61 .

[0067] Next, the piston rod of the third cylinder 55 extends, driving the second cross plate 65 to move downward, causing the two second telescopic rods 62 and the two pressure blocks 63 to retract (move downward) until the thick-walled portion 102 is clamped from both sides, thereby clamping the thick-walled portion 102 and setting the inner side of the thick-walled portion 102 upward.

[0068] Then, the inner side surface of the thick portion 102 is subjected to turning, milling, drilling, and boring.

[0069] After the above processing is completed, the piston rod of the third cylinder 55 retracts, driving the second cross plate 65 to move upward, causing the two second telescopic rods 62 and the two pressure blocks 63 to extend (move upward), releasing the clamping of the thick-walled portion 102, and the screw nut seat 1 can be removed (completing the turning, milling and drilling and boring processing of the inner surface of the thick-walled portion 102).

[0070] Then, the above-mentioned rod nut seat 1 is placed on the workbench 3, so that the outer side surface of the thin-walled part 101 abuts against the inner side surface of the fourth vertical plate 72, so that the two second positioning columns 75 are respectively inserted into the through holes processed on the thin-walled part 101, and the two support columns 76 respectively support the two groove parts on both sides of the inner side surface of the thick-walled part 102 from the bottom side.

[0071] Next, the fourth cylinder 73 extends, driving the vertical plate 77 and the transverse push rod 74 to extend (move to the left) until the end of the transverse push rod 74 abuts against the inner side of the thin-walled portion 101, thereby fixing the thin-walled portion 101 from one side and supporting and fixing the inner side of the thick-walled portion 102 from the bottom, while setting the outer side of the thick-walled portion 102 upward.

[0072] Then, the outer side surface of the thick portion 102 is subjected to turning, milling, drilling, and boring.

[0073] After completing the above processing, the fourth cylinder 73 retracts, driving the vertical plate 77 and the horizontal push rod 74 to retract (move to the right), releasing the fixation of the thin-walled part 101, and the screw nut seat 1 can be removed (completing the turning, milling and drilling and boring processing of the outer side of the thick-walled part 102).

[0074] It should be noted that the above-mentioned processing of the thin-walled portion 101 and the thick-walled portion 102 is carried out simultaneously, that is, when the screw nut seat that completes a certain processing process is transferred to the next processing process, the screw nut seat that completes the previous processing process can be transferred to this processing process.

[0075] In addition, the first positioning assembly 4 , the first clamping assembly 5 , the second clamping assembly 6 and the second positioning assembly 7 in the present invention can all fix and clamp two screw nut seats 1 at the same time.

[0076] Although this specification is described according to implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

[0077] Therefore, the above description is only a preferred embodiment of the present application and is not intended to limit the scope of implementation of the present application; that is, all equivalent modifications made according to the scope of the claims of the present application are within the scope of protection of the claims of the present application.

Claims

1. A screw nut seat processing tool, comprising a screw nut seat to be processed, a base fixed to a machining center, and a workbench fixedly connected to the base, wherein the screw nut seat includes an L-shaped thin-walled portion and a thick-walled portion that are integrally connected, and is characterized in that: The workbench is provided with a first positioning assembly, a first clamping assembly, a second clamping assembly and a second positioning assembly in sequence in a clockwise direction. The first positioning assembly is used to fix the thick-walled portion so that the outer side of the thin-walled portion is arranged upward. The workbench is provided with a floating support mechanism on the front side of the first positioning assembly for supporting the inner side of the thin-walled portion from the bottom side. The workbench is installed on one side of the first positioning assembly for clamping the outer side of the thin-walled portion from the top side. The first clamping assembly is used to clamp the screw nut seat so that one side of the screw nut seat is facing upward; the second clamping assembly is used to clamp the thick-walled portion so that the inner side of the thick-walled portion is facing upward; the second positioning assembly is used to fix the thin-walled portion from one side and support and fix the inner side of the thick-walled portion from the bottom side so that the outer side of the thick-walled portion is facing upward; The first positioning assembly includes a first base, a first vertical plate, a positioning block, a first positioning column and a first cylinder, the first base is fixedly mounted on the upper surface of the workbench, the first vertical plate is fixedly connected to the first base and is perpendicular to the first base, the positioning block is fixedly connected to one side of the front side surface of the first vertical plate and is perpendicular to the first vertical plate; the first cylinder is fixedly mounted on the rear side surface of the first vertical plate, the piston rod of the first cylinder extends horizontally backward and is fixedly connected to the first cross plate, the end of the first cross plate is fixedly connected to the first telescopic rod extending forward, the first telescopic rod passes through the first vertical plate and extends to the other side of the front side surface of the first vertical plate, and the first positioning column is fixedly connected to the front end of the first telescopic rod; The first positioning column is a tapered structure with a larger front and a smaller back; The first clamping assembly includes a second base, two second vertical plates distributed in an L shape, a limit block, a right-angled triangle top block and a third cylinder, the second base is fixedly mounted on the upper surface of the workbench, the two second vertical plates and the limit block are fixedly connected to the second base, and are perpendicular to the second base; the limit block is located on the hypotenuse of the right-angled triangle where the two second vertical plates are located, the right-angled triangle top block is located on the inner side of the limit block, and the hypotenuse of the right-angled triangle top block and the inner side surface of the limit block are beveled, the third cylinder is fixedly mounted on the lower surface of the workbench, and the piston rod of the third cylinder passes through the workbench upward and is fixedly connected to the bottom of the right-angled triangle top block; The second clamping assembly includes a third base, two second telescopic rods, two pressure blocks and a third cylinder, the third base is fixedly mounted on the upper surface of the workbench, the third cylinder is fixedly mounted on the lower surface of the workbench, the piston rod of the third cylinder extends vertically downward and is fixedly connected to the second cross plate, the lower ends of the two second telescopic rods are respectively fixedly connected to the two ends of the second cross plate, the upper ends of the two second telescopic rods upwardly penetrate the workbench and extend to both sides above the third base, the two pressure blocks are respectively fixedly connected to the upper ends of the two second telescopic rods; The second positioning assembly includes a third vertical plate and a fourth vertical plate arranged opposite to each other, a fourth cylinder, a transverse push rod, two second positioning columns and two support columns. The third vertical plate and the fourth vertical plate are fixedly connected to the workbench and are perpendicular to the workbench; the fourth cylinder is fixedly installed on the inner side surface of the third vertical plate, the piston rod of the fourth cylinder extends toward the third vertical plate, and its end is fixedly connected to the vertical plate, the transverse push rod is fixedly connected to the bottom of the vertical plate, the two second positioning columns are fixedly connected to the inner side surface of the fourth vertical plate, and the two support columns are fixedly connected to the workbench and are located between the third vertical plate and the fourth vertical plate.

2. The screw rod nut seat processing tool according to claim 1, characterized in that: The floating support mechanism includes a seat sleeve, a second cylinder, a compression sleeve, a push rod, a pin, a spring collet, a pressure cap and a support head. The seat sleeve is fixedly mounted on the upper surface of the workbench, and the second cylinder is fixedly mounted on the lower surface of the workbench. The piston rod of the second cylinder passes through the workbench upward and extends to the bottom of the seat sleeve; the compression sleeve, push rod and pin are all located inside the seat sleeve, the bottom end of the compression sleeve is fixedly connected to the free end of the piston rod of the second cylinder, and the lower end of the push rod is slidably sleeved inside the compression sleeve The lower end of the pin is inserted into the bottom end of the compression sleeve, and the upper end of the pin is slidably sleeved on the lower end of the push rod; the lower part of the spring chuck is located in the upper port of the compression sleeve, and is beveled with the inner edge of the upper port of the compression sleeve. The lower part of the pressure cap is fixedly sleeved on the upper end of the seat sleeve, and the upper part of the pressure cap is sleeved on the upper part of the spring chuck, and is beveled with the upper part of the spring chuck. The upper end of the push rod passes through the compression sleeve and the spring chuck in sequence and extends out, and the support head is fixedly connected to the extended end of the push rod.

3. The screw rod nut seat processing tool according to claim 2, characterized in that: A first spring is mounted on the outside of the pin between the bottom end of the push rod and the inner bottom surface of the compression sleeve, an annular step is provided in the middle of the inner wall of the compression sleeve, and a second spring is mounted on the outside of the push rod between the bottom end of the spring chuck and the transverse step surface of the annular step.

4. The screw rod nut seat processing tool according to claim 2, characterized in that: The top end of the seat cover is fixedly sleeved with a dust cap.

5. The screw rod nut seat processing tool according to claim 1, characterized in that: The bottoms of the inner sides of the two second vertical plates are fixedly connected with cross bars for supporting the other side of the screw nut seat from the bottom.

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