Double-station milling jig for control rod

Abstract

The invention relates to the technical field of milling machine fixtures, and particularly discloses a double-station milling machine fixture for a control rod, which comprises a base, a turntable capable of rotating is arranged on the base, a rotating seat is fixedly arranged on the turntable, a clamping mechanism is mounted on the rotating seat, and a pressing strip and four jacking mechanisms are arranged on the clamping mechanism. The four jacking and pressing mechanisms correspond to the four matching holes in the two control rods correspondingly. According to the double-station milling machine fixture for the control rods, the control pressing strip drives the four pushing pieces and the four driven frames to move downwards, the four pushing pieces extend into the four matching holes in the two control rods correspondingly, the driven frames move downwards to move along the inclined faces on the guide frames, the driven frames move to drive the pushing pieces to move through the clamping heads, and therefore the control rods are driven to move. And the pushing balls on the pushing pieces push the inner walls of the matching holes of the control rods, so that the control rods are forced to deflect and automatically straighten, the two control rods are aligned to form a straight line shape, and the technical requirements on operators and the operation difficulty are reduced.

Description

Technical Field

[0001] The invention relates to the technical field of milling machine fixtures, and in particular to a double-station milling machine fixture for a control rod. Background Art

[0002] A milling machine is a machine tool that uses a milling cutter to process various surfaces of a workpiece. The milling cutter mainly moves in rotation, and the movement of the workpiece and the milling cutter is the feed motion. It can process planes, grooves, various curved surfaces, gears, etc. In addition, it can also be used to process the surface of a rotating body, inner holes, and cut off. When a milling machine processes a workpiece, it needs to fix the workpiece with a fixture. In order to improve production efficiency, a double-station milling machine fixture has appeared on the market. The double-station milling machine fixture can clamp two workpieces at a time, greatly improving the processing efficiency of the workpiece.

[0003] Existing double-station milling machine fixtures usually use four clamping blocks, each of which is fixed to the workbench of the milling machine through studs and clamping blocks. The four clamping blocks are grouped in twos, and the two groups of clamping blocks correspond to two workpieces respectively. The two clamping blocks on each group are controlled to clamp the two sides of the workpiece to clamp and fix the workpiece.

[0004] When milling the control rod, a double-station milling machine fixture is often used to clamp the two control rods. This type of workpiece has two matching holes, such as Figure 1 and Figure 2 The control rod on the market is shown in the figure. The control rod 70 has a protruding shaft 71, a first milling hole 72, a milling surface 73, a second milling hole 74 and two matching holes 75. The center position of the protruding shaft 71 and the center position of the two matching holes 75 are on the same straight line. The first milling hole 72, the milling surface 73 and the second milling hole 74 are milled by a milling machine. When the control rod 70 is processed on the milling machine using a double-station milling machine fixture, the control rod 70 is first placed upright on the workbench of the milling machine, and then the two clamping blocks on each group are controlled to clamp the two sides of the control rod 70, and the control rod 70 is milled to form the first milling hole 72. After the first milling hole 72 is processed, the control rod 70 is disassembled and reassembled to make the control rod 70 stand on its side, and then the control rod 70 is milled to form the milling surface 73 and the second milling hole 74.

[0005] However, before clamping the two control rods each time, in order to facilitate the milling process of the milling cutter and reduce the processing deviation, it is necessary to first align the positions of the control rods so that the two control rods are in an "I" shape and the center positions of the four matching holes on the two control rods are in the same straight line. The existing method of aligning the operating rods is to do it manually with the help of measuring tools, which has high technical requirements on the operator, requires a lot of energy, and is difficult to operate. Summary of the invention

[0006] The invention provides a double-station milling machine fixture for a control rod, aiming to solve the problem in the related art that the adjustment of the operating rod is performed manually with the aid of a measuring tool, which has high technical requirements on the operator and is difficult to operate.

[0007] The double-station milling machine fixture for a control rod of the present invention comprises a base, the base is provided with a rotatable turntable, and further comprises:

[0008] A rotating seat, fixed on the rotating disk, capable of carrying two control rods at the same time;

[0009] A clamping mechanism is installed on the rotating seat, and the clamping mechanism has a pressure strip that can move up and down and four pressing mechanisms, and the four pressing mechanisms correspond to the four matching holes on the two control rods respectively;

[0010] Each of the pressing mechanisms comprises a guide frame fixed on the rotating seat, a clamp head slidably connected to the pressure strip with a single degree of freedom, an avoidance hole provided on the pressure strip, a limiting block fixed on the pressure strip, and a push piece fixed on the clamp head, a first elastic piece is fixed between the limiting block and the clamp head, and a passive frame penetrating the avoidance hole is fixed on the clamp head;

[0011] When the passive frame moves downward, the passive frame can move along the guide of the inclined surface, and the ejecting member can eject the inner wall of the matching hole on the control rod.

[0012] Take two control rods and place them on the rotating seat respectively, and make the four matching holes on the two control rods be placed under the four ejecting members respectively, control the pressure strip to move toward the control rod, the pressure strip drives the four ejecting members and the four passive frames to move downward, the four ejecting members extend into the four matching holes on the two control rods respectively, at the same time, the passive frame moves down and falls on the inclined surface on the guide frame, and moves along the guide of the inclined surface on the guide frame, the movement of the passive frame drives the clamping head to overcome the elastic force of the first elastic member and move, the movement of the clamping head drives the ejecting member to move, so that the top ball on the ejecting member pushes the inner wall of the matching hole of the control rod, forcing the control rod to deflect and automatically align, so that the center positions of the four matching holes on the two control rods are on the same straight line, and then the two control rods are aligned and form a "one" shape.

[0013] Preferably, the base comprises a bottom plate, two bearing seats are fixedly arranged on the bottom plate, a turntable is rotatably connected to the two bearing seats, and the rotating seat is fixedly arranged between the two turntables.

[0014] By controlling the rotation of the turntable, the entire rotating seat can be driven to deflect, and the rotating seat can then drive the control rod to deflect through the clamping mechanism, so that the milling position of the control rod can be switched.

[0015] Preferably, the rotating seat includes a support plate, both sides of which are fixed with connecting disks, and the two connecting disks are respectively fixed on two rotating disks. There are two symmetrical support platforms above the support plate to support the control rod. The hub shape of the support platform is consistent with the contour shape of the control rod. A positioning hole is also provided on the support platform for the convex shaft on the control rod to be inserted.

[0016] The position of the control rod can be adjusted with reference to the contour of the support platform, thereby improving the accuracy of the placement of the control rod. The convex shaft on the control rod can be inserted into the positioning hole to locate the placement of the control rod, further improving the accuracy of the placement of the control rod.

[0017] Preferably, the clamping mechanism further comprises a guide rod fixed on the rotating seat, the pressure strip is slidably connected to the guide rod with a single degree of freedom, and a driving structure is installed between the pressure strip and the support plate to drive the pressure strip to move up and down.

[0018] Preferably, the driving structure includes a through hole opened on the pressure strip and a screw hole opened on the support plate, a first bolt is passed through the through hole, a limiting plate is fixed on the first bolt, the limiting plate is located directly below the pressure strip, and the first bolt is threadedly connected to the screw hole on the support plate.

[0019] When the first bolt is controlled to rotate, the threaded connection between the threaded section on the first bolt and the screw hole can drive the first bolt to move up and down. When the first bolt moves downward, the bolt head on the first bolt will press the pressure strip downward; when the first bolt moves upward, the limiting plate on the first bolt can push the pressure strip upward.

[0020] Preferably, the passive frame comprises a bracket fixed on the top of the clamping head, the bottom of the bracket is rotatably connected to a roller, and the roller can fall on the inclined plane when it moves downward.

[0021] The passive frame moves downward so that the roller can fall on the inclined plane on the guide frame and roll along the guide of the inclined plane, thereby reducing the friction between the passive frame and the guide frame.

[0022] Preferably, the ejector member includes a fixed seat fixed at the bottom of the chuck, the fixed seat is provided with a second guide groove, a push head is slidably connected with a single degree of freedom in the second guide groove, a second elastic member is fixed between the push head and the inner wall of the second guide groove, and at least one push ball is rollingly connected to the push head.

[0023] Preferably, the double-station milling machine fixture for control rods of the present invention also includes two reinforcement components, and the two reinforcement components are respectively used to clamp the two control rods. Each of the reinforcement components includes two side pressure pieces and two upper pressure pieces. The two side pressure pieces are symmetrically arranged on both sides of the support plate for clamping the side edges of the control rods, and the two upper pressure pieces are symmetrically arranged on both sides of the support plate for clamping the top surfaces of the control rods.

[0024] Preferably, each of the side pressure members comprises a side pressure seat fixed on the support plate, a screw hole is provided on the side pressure seat, and a second bolt is threadedly connected to the screw hole on the side pressure seat;

[0025] Each of the upper pressing members comprises an upper pressing seat, a through hole is formed on the upper pressing seat, a third bolt is passed through the through hole on the upper pressing seat, and the third bolt is threadedly connected to the support plate.

[0026] Preferably, the double-station milling machine fixture for a control rod of the present invention further comprises an impact mechanism;

[0027] The impact mechanism includes a seat frame fixed on the support plate and a lever hinged on the fixed seat, the seat frame is fixed with a guide rail, a driving bar is slidably connected with a single degree of freedom in the guide rail, a fourth elastic member is provided between the driving bar and the guide rail, the driving bar has a latch tooth, a third elastic member is fixed between the lever and the fixed seat, the lever has an impact portion and a second connecting portion abutting against the inner wall of the avoidance hole, and the deflection of the lever can make the second connecting portion contact the latch tooth and the impact portion contact the top head.

[0028] The beneficial effect of the present invention is that when in use, two control rods are respectively placed on the rotating seats, the control pressure strip moves toward the control rod, the pressure strip drives four ejection pieces and four passive frames to move downward, the four ejection pieces are respectively extended into the four matching holes on the two control rods, as the passive frame moves downward and moves along the inclined surface on the guide frame, the passive frame drives the clamping head to move, and the movement of the clamping head drives the ejection piece to move, so that the ejection ball on the ejection piece pushes the inner wall of the matching hole of the control rod, forcing the control rod to deflect and automatically align, so that the center positions of the four matching holes on the two control rods are on the same straight line, and then the two control rods are aligned to form an "I" shape, without the aid of operating tools, effectively reducing the technical requirements for operators, reducing energy consumption, and reducing the difficulty of operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a structural schematic diagram of the control rod in the present invention.

[0030] Figure 2 It is another structural schematic diagram of the control rod in the present invention.

[0031] Figure 3It is a schematic structural diagram of the first embodiment of the present invention.

[0032] Figure 4 It is a schematic structural diagram of a base and a rotating base in the first embodiment of the present invention.

[0033] Figure 5 It is a schematic structural diagram of the rotating seat and the clamping mechanism of the first embodiment of the present invention.

[0034] Figure 6 It is a schematic structural diagram of the driving structure of the first embodiment of the present invention.

[0035] Figure 7 It is a schematic structural diagram of a support plate, a guide rod, a pressure strip, a guide frame, a passive frame and an ejector member in a first embodiment of the present invention.

[0036] Figure 8 It is a three-dimensional cross-sectional view of a pressure strip and an ejector member according to a first embodiment of the present invention.

[0037] Fig. 9 It is a structural schematic diagram of the state in which the ejection member of the first embodiment of the present invention pushes the inner wall of the matching hole on the ejection control rod.

[0038] Fig.10 It is a schematic structural diagram of a reinforcement component of the first embodiment of the present invention.

[0039] Fig.11 It is a schematic structural diagram of the second embodiment of the present invention.

[0040] Fig.12 It is a schematic structural diagram of the impact mechanism of the second embodiment of the present invention.

[0041] Fig.13 It is a schematic structural diagram of a fixing seat, a lever and a third elastic member of a second embodiment of the present invention.

[0042] Fig.14 It is a structural schematic diagram of the state in which the ejection member of the second embodiment of the present invention pushes the inner wall of the matching hole on the ejection control rod.

[0043] Reference numerals:

[0044] 10. base; 11. bottom plate; 12. bearing seat; 13. turntable; 14. rotation drive device; 20. rotating seat; 21. support plate; 211. support platform; 212. positioning hole; 22. connecting plate; 30. clamping mechanism; 31. guide rod; 32. pressure strip; 321. first guide groove; 33. driving structure; 331. perforation; 332. first bolt; 333. limiting plate; 34. pressing mechanism; 341. guide frame; 3411. inclined surface; 342. clamping head; 343. avoidance hole; 344. limiting block; 345. first elastic member; 346. passive frame; 3461. bracket ; 3462, roller; 347, push piece; 3471, fixed seat; 3472, second guide groove; 3473, top head; 3474, second elastic member; 3475, top ball; 40, reinforcement assembly; 41, side pressure piece; 411, side pressure seat; 412, second bolt; 42, upper pressure piece; 421, upper pressure seat; 422, third bolt; 50, impact mechanism; 51, seat frame; 52, lever; 521, impact part; 522, first connecting part; 523, second connecting part; 53, guide rail; 54, drive bar; 541, latching tooth; 55, third elastic member; 56, fourth elastic member. DETAILED DESCRIPTION

[0045] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.

[0046] like Figures 3 to 10 As shown, the first embodiment of the double-station milling machine fixture for control rods of the present invention mainly includes a base 10, the base 10 is provided with a rotatable turntable 13, the turntable 13 is fixedly connected with a rotating seat 20, two control rods can be placed on the rotating seat 20, and a clamping mechanism 30 is installed on the rotating seat 20. The clamping mechanism 30 can clamp the two control rods placed on the rotating seat 20, and can force the positions of the control rods to be aligned so that the center positions of the four matching holes on the two control rods are in the same straight line. The rotation of the turntable 13 can drive the rotation of the rotating seat 20, and the rotation of the rotating seat 20 can drive the rotation of the clamping mechanism 30, thereby driving the control rod clamped on the clamping mechanism 30 to deflect, so as to adjust the milling position of the control rod to cooperate with the milling cutter on the milling machine for milling processing.

[0047] refer to Figure 3 and Figure 4As shown, the base 10 includes a bottom plate 11, which can be installed on the working platform of the milling machine so that the milling machine fixture of the present invention can be connected to the milling machine. Two bearing seats 12 are fixedly installed on the bottom plate 11, and the two bearing seats 12 are rotatably connected to the turntable 13 through bearings. The rotating seat 20 is fixedly installed between the two turntables 13 to support both sides of the rotating seat 20. A rotating drive device 14 is also fixedly installed on one of the bearing seats 12, and the turntable 13 rotatably connected on the bearing seat 12 is connected to the output end of the rotating drive device 14. By starting the rotating drive device 14, the turntable 13 can be driven to rotate, and the rotation of the turntable 13 drives the entire rotating seat 20 to deflect, so as to realize the switching of the milling position of the control rod. Exemplarily, the rotating drive device 14 includes a motor and a reducer both installed on the bottom plate 11, the output end of the motor is connected to the input end of the reducer, and the output end of the reducer is fixedly connected to the turntable 13.

[0048] refer to Figures 3 to 5 As shown, the rotating seat 20 includes a support plate 21, and connecting plates 22 are welded on both sides of the support plate 21. The two connecting plates 22 are fixedly connected to the two rotating disks 13 respectively. There are two supporting platforms 211 symmetrically arranged above the support plate 21. The supporting platforms 211 are used to carry the control rod. It should be noted that the hub shape of the supporting platform 211 is consistent with the contour shape of the control rod. When placing the operating rod, the position of the control rod can be adjusted with reference to the supporting platform 211, thereby reducing the deviation of the position of the control rod. A positioning hole 212 is also provided on the supporting platform 211 for the cam on the control rod to be inserted, so as to position the control rod and further reduce the deviation of the position of the control rod.

[0049] refer to Figure 3 , Figures 5 to 10 As shown, the clamping mechanism 30 includes a guide rod 31 welded to the upper surface of the support plate 21, and the outer surface of the guide rod 31 is slidably connected with a pressure strip 32 in a single degree of freedom. The lower surface of the pressure strip 32 is provided with a first guide groove 321, and a driving structure 33 is installed between the pressure strip 32 and the support plate 21. The driving structure 33 can drive the pressure strip 32 to move up and down to realize the movement function of the pressure strip 32 approaching and moving away from the support plate 21. Four pressing mechanisms 34 are installed in the first guide groove 321 and on the support plate 21. The four pressing mechanisms 34 can respectively correspond to the matching holes on the two control rods. When the pressure strip 32 moves close to the support plate 21, the four pressing mechanisms 34 can respectively push the inner walls of the four matching holes on the two control rods to force the control rods to deflect and automatically adjust their positions, so that the center positions of the four matching holes on the two control rods are on the same straight line, thereby improving the accuracy of the placement of the control rods.

[0050] like Figure 5 and Figure 6As shown, the driving structure 33 includes a through hole 331 opened in the middle of the pressure strip 32 and a screw hole opened on the support plate 21, and a first bolt 332 is passed through the through hole 331, and a limiting plate 333 is welded on the first bolt 332, and the limiting plate 333 is located directly below the pressure strip 32, and the first bolt 332 has a threaded section, and the threaded section on the first bolt 332 is threadedly connected to the screw hole on the support plate 21. When the first bolt 332 is rotated by using a wrench, the first bolt 332 can be driven to move up and down through the threaded drive between the threaded section on the first bolt 332 and the screw hole on the support plate 21. When the first bolt 332 moves downward, the bolt head on the first bolt 332 will press down the pressure strip 32, driving the pressure strip 32 to move downward; when the first bolt 332 moves upward, the limiting plate 333 on the first bolt 332 can push up the pressure strip 32, driving the pressure strip 32 to move upward.

[0051] Continue to refer Figure 7 and Figure 8 As shown, each pressing mechanism 34 includes a guide frame 341, a clamping head 342, an avoidance hole 343 opened on the pressure strip 32, a limiting block 344 fixedly connected to the inner wall of the first guide groove 321 and a push piece 347 fixedly connected to the bottom of the clamping head 342. The guide frame 341 is welded to the support plate 21, and the top of the guide frame 341 has an inclined surface 3411. The clamping head 342 is slidably connected in the first guide groove 321 with a single degree of freedom. It should be noted that the cross-section of the first guide groove 321 is T-shaped, and the clamping head 342 is T-shaped that matches the first guide groove 321, so that the clamping head 342 can be limited in the first guide groove 321, and then move along the guide of the first guide groove 321. The avoidance hole 343 The first elastic member 345 is fixedly connected between the limiting block 344 and the clamping head 342, and in the present embodiment, the first elastic member 345 is a spring, and the top of the clamping head 342 is fixedly connected with a passive frame 346, and the passive frame 346 can move downward and fall on the inclined surface 3411 on the guide frame 341, and can move along the guide of the inclined surface 3411 on the guide frame 341, and the movement of the passive frame 346 can drive the clamping head 342 to overcome the elastic force of the first elastic member 345 and move, and the movement of the clamping head 342 can drive the ejecting member 347 to move synchronously, so that the ejecting member 347 pushes the inner wall of the matching hole on the control rod, thereby pushing the control rod to deflect for automatic correction.

[0052] In this embodiment, the passive frame 346 includes a bracket 3461 welded to the top of the clamping head 342. The bottom of the bracket 3461 is rotatably connected to a roller 3462 through a bearing. The roller 3462 moves downward and can fall on the inclined surface 3411 on the guide frame 341, and rolls along the guide of the inclined surface 3411, which can reduce the friction between the passive frame 346 and the guide frame 341. The roller 3462 moves along the guide of the inclined surface 3411 to drive the bracket 3461 to move synchronously, thereby realizing the overall movement of the passive frame 346.

[0053] Exemplarily, the guide frame 341 includes two guide plates welded to the support plate 21 , and the tops of the two guide plates are provided with inclined surfaces 3411 . When the roller 3462 moves downward, the roller 3462 can fall on the inclined surfaces 3411 on the two guide plates at the same time and roll along the guidance of the inclined surfaces 3411 .

[0054] The ejector 347 includes a fixed seat 3471 welded to the bottom of the clamp head 342, and a second guide groove 3472 is provided on the fixed seat 3471. A single-degree-of-freedom sliding connection is provided in the second guide groove 3472 with a top head 3473. For example, the cross section of the second guide groove 3472 is T-shaped, and the top head 3473 has a T-shaped protrusion that matches the second guide groove 3472. A second elastic member is fixedly connected between the top head 3473 and the inner wall of the second guide groove 3472. The second elastic member 3474 is a spring in this embodiment, and at least one top ball 3475 is rollingly connected to the top head 3473. When the push member 347 moves toward the inner wall of the matching hole of the control rod, the top ball 3475 on the push member 347 can push the inner wall of the matching hole on the control rod, thereby forcing the control rod to deflect to automatically correct its position. At the same time, the top ball 3475 can roll with the movement of the control rod to reduce the friction between the push member 347 and the control rod.

[0055] When in use, take two control rods and place them on the two support platforms 211 respectively, and insert the convex shafts on the control rods into the positioning holes 212 on the support plate 21, preliminarily adjust the placement position of the control rods according to the contour of the support platform 211, and then control the driving structure 33 to drive the pressure strip 32 to move toward the control rod, and the pressure strip 32 drives the four ejection members 347 and the four passive frames 346 to move downward, and the four ejection members 347 extend into the four matching holes on the two control rods respectively. At the same time, the passive frame 346 moves downward to fall on the inclined surface 3411 on the guide frame 341, and can move along the guide of the inclined surface 3411 on the guide frame 341 The movement of the passive frame 346 drives the clamping head 342 to overcome the elastic force of the first elastic member 345 and the movement of the clamping head 342 drives the ejecting member 347 to move, so that the top ball 3475 on the ejecting member 347 pushes the inner wall of the matching hole of the ejecting control rod, and the two matching holes on each control rod are offset by the pulling force, thereby forcing the control rod to deflect and be straightened, so that the center positions of the four matching holes on the two control rods are in the same straight line, thereby making the two control rods follow and form an "I" shape, without the aid of operating tools, effectively reducing the technical requirements for operators, reducing the energy consumed, and reducing the difficulty of operation.

[0056] After the control rod is positioned correctly, it will not move any more. As the pressure strip 32 continues to move downward, the top bead 3475 is squeezed and compresses the second elastic member 3474 until the pressure strip 32 is pressed against the control rod, thereby completing the clamping of the control rod. Fig. 9 As shown, at this time, the elastic force of the second elastic member 3474 can drive the top ball 3475 to keep pressing against the inner wall of the matching hole of the control rod, so that the control rod can be milled to form a first milled hole, and then the rotation drive device 14 is controlled to drive the turntable 13 to rotate, and the rotation of the turntable 13 drives the entire rotating seat 20 to deflect, and the rotation of the rotating seat 20 drives the control rod to deflect so that the side of the control rod faces upward, and the control rod can continue to be milled to form a milling surface and a second milled hole.

[0057] When the control rod needs to be removed after milling, the control drive structure 33 drives the pressure strip 32 to move away from the control rod, and the pressure strip 32 drives each ejection member 347 and each passive frame 346 to move upward. The passive frame 346 moves upward and can separate from the inclined surface 3411. At the same time, the elastic force of the second elastic member 3474 drives the top head 3473 to move and reset, and the elastic force of the first elastic member 345 drives the clamping head 342 to move and reset, so that the ejection member 347 is separated from the inner wall of the matching hole of the control rod as a whole, and the control rod can be taken out.

[0058] In this embodiment, the double-station milling machine fixture for the control rod of the present invention also includes two reinforcement components 40, both of which are installed on the support plate 21. The two reinforcement components 40 correspond to the two control rods respectively and are used to strengthen the connection of the control rod on the support plate 21.

[0059] refer to Figure 3 and Fig.10 As shown, the reinforcing component 40 includes two side pressure members 41 and two upper pressure members 42. The two side pressure members 41 are symmetrically arranged on both sides of the support plate 21. The side pressure member 41 includes a side pressure seat 411 fixedly connected to the support plate 21 by screws. The side pressure seat 411 is provided with a screw hole. The screw hole on the side pressure seat 411 is threadedly connected with a second bolt 412. The upper pressure member 42 includes an upper pressure seat 421. The upper pressure seat 421 is provided with a through hole. A third bolt 422 is passed through the through hole. The third bolt 422 is threadedly connected to the support plate 21.

[0060] After the clamping mechanism 30 clamps the control rod, the second bolt 412 is twisted to press the second bolt 412 against the side of the control rod, thereby clamping the side direction of the control rod. Twisting the third bolt 422 can drive the upper pressure seat 421 to be pressed against the top of the control rod, thereby pressing the top of the control rod and further improving the firmness of the control rod installation.

[0061] In the first embodiment, if there are impurities between the control rod and the surface of the support platform 211, the friction between the two will increase. If the friction between the control rod and the surface of the support platform 211 is greater than the elastic force of the second elastic member 3474, the push head 3473 cannot push the control rod to deflect, causing the control rod position adjustment to fail. In order to overcome the above problem, a second embodiment is proposed to solve the above problem.

[0062] like Figures 11 to 14 FIG. 2 shows a second embodiment of a double-station milling machine fixture for a control rod of the present invention. The difference from the first embodiment is that the second embodiment further includes an impact mechanism 50 .

[0063] The impact mechanism 50 includes a seat frame 51 fixedly connected to the support plate 21 and a lever 52 hinged to the fixed seat 3471 through a hinge. A guide rail 53 is welded on the seat frame 51. A driving bar 54 is slidably connected to the guide rail 53 in a single degree of freedom. A fourth elastic member 56 is fixedly connected between the driving bar 54 and the guide rail 53. The elastic force of the fourth elastic member 56 can drive the driving bar 54 to move downward. It should be noted that a card slot is provided on the guide rail 53, and a protrusion matching the card slot is provided on the driving bar 54. The fourth elastic member 56 is a spring. The driving bar 54 has at least one card tooth 541. The lever 52 is fixedly connected to the fixed seat 3471. There is a third elastic member 55 in a compressed state. In the present embodiment, the third elastic member 55 is a V-shaped spring sheet. The elastic force of the third elastic member 55 can drive the lever 52 to deflect so as to move away from the fixing seat 3471. The lever 52 has a striking portion 521, a first connecting portion 522 connected to the striking portion 521, and a second connecting portion 523 connected to the first connecting portion 522. The second connecting portion 523 passes through the avoidance hole 343 and abuts against the inner wall of the avoidance hole 343. When the elastic force of the third elastic member 55 drives the lever 52 to deflect, the top end of the second connecting portion 523 on the lever 52 can overlap the latching tooth 541 on the driving bar 54.

[0064] refer to Fig.14 As shown, in the process of the clamping mechanism 30 clamping the control rod, the fixed seat 3471 can move with the clamping head 342, and the movement of the fixed seat 3471 drives the lever 52 to move, and at the same time, the third elastic member 55 recovers and drives the lever 52 to deflect, and the second connecting portion 523 on the lever 52 is offset to the top of the locking tooth 541, and at the same time, the impact portion 521 on the lever 52 abuts against the top head 3473, and at the same time, as the pressure strip 32 moves downward, the fixed seat 3471 drives the lever 52 to move downward to pass over the locking tooth 541;

[0065] Whenever the lever 52 passes over a latching tooth 541, the latching tooth 541 will deflect the lever 52 by pushing the second connecting portion 523, and cooperate with the elastic force of the third elastic member 55 to drive the lever 52 to deflect and reset, so that the impact portion 521 on the lever 52 impacts the top head 3473, and the top head 3473 is impacted and transmitted to the top bead 3475, and the top bead 3475 then impacts the inner wall of the matching hole on the control rod, shocking the control rod, and the control rod is deflected by the impact force, thereby strengthening the force forcing the control rod to deflect, and further improving the accuracy of the control rod position.

[0066] In the process of releasing the clamping mechanism 30 from clamping the control rod, the elastic force of the first elastic member 345 drives the clamping head 342 to move and reset, and the clamping head 342 drives the fixing seat 3471 to recover. The recovery action of the fixing seat 3471 plus the pressing action of the inner wall of the avoidance hole 343 on the second connecting portion 523 can force the lever 52 to overcome the elastic force of the third elastic member 55 and deflect and reset. The third elastic member 55 returns to the compressed state. During the resetting of the lever 52, the deflection action of the lever 52 will move the latch tooth 541, so that the driving bar 54 overcomes the elastic force of the fourth elastic member 56 and moves upward. Then the lever 52 disengages from the latch tooth 541, and the driving bar 54 moves downward and resets under the elastic force of the fourth elastic member 56.

[0067] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0068] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0069] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A double-station milling machine fixture for a control rod, comprising a base (10), characterized in that: The base (10) is provided with a rotatable turntable (13), and further comprises: A rotating seat (20) is fixedly mounted on the rotating disk (13) and is capable of carrying two control rods at the same time; A clamping mechanism (30) is mounted on the rotating seat (20), wherein the clamping mechanism (30) has a pressure strip (32) capable of moving up and down and four pressing mechanisms (34), wherein the four pressing mechanisms (34) respectively correspond to four matching holes on the two control rods; Each of the pressing mechanisms (34) comprises a guide frame (341) fixedly mounted on the rotating seat (20), a clamping head (342) slidably connected to the pressure strip (32) with a single degree of freedom, an avoidance hole (343) provided on the pressure strip (32), a limiting block (344) fixedly mounted on the pressure strip (32), and a pushing member (347) fixedly mounted on the clamping head (342), a first elastic member (345) fixedly mounted between the limiting block (344) and the clamping head (342), and a passive frame (346) penetrating the avoidance hole (343) fixedly mounted on the clamping head (342); When the passive frame (346) moves downward, the passive frame (346) can move along the guide of the inclined surface (3411), and the ejecting member (347) can eject the inner wall of the matching hole on the control rod.

2. The double-station milling machine fixture for a control rod according to claim 1, characterized in that: The base (10) comprises a bottom plate (11), two bearing seats (12) are fixedly arranged on the bottom plate (11), a rotating disk (13) is rotatably connected to the two bearing seats (12), and the rotating seat (20) is fixedly arranged between the two rotating disks (13).

3. The double-station milling machine fixture for a control rod according to claim 2, characterized in that: The rotating seat (20) comprises a support plate (21), both sides of which are fixedly provided with connecting plates (22), the two connecting plates (22) being respectively fixedly provided on two rotating disks (13), and the upper part of the support plate (21) is provided with two mutually symmetrical supporting platforms (211) for carrying a control rod, the hub shape of the supporting platform (211) being consistent with the contour shape of the control rod, and the supporting platform (211) is also provided with a positioning hole (212) for the convex shaft on the control rod to be inserted.

4. The double-station milling machine fixture for a control rod according to claim 1, characterized in that: The clamping mechanism (30) also has a guide rod (31) fixed on the rotating seat (20), the pressure strip (32) is slidably connected to the guide rod (31) with a single degree of freedom, and a driving structure (33) is installed between the pressure strip (32) and the support plate (21) to drive the pressure strip (32) to move up and down.

5. The double-station milling machine fixture for a control rod according to claim 4, characterized in that: The driving structure (33) comprises a through hole (331) formed on the pressure strip (32) and a screw hole formed on the support plate (21); a first bolt (332) is inserted into the through hole (331); a limiting plate (333) is fixed to the first bolt (332); the limiting plate (333) is located directly below the pressure strip (32); and the first bolt (332) is threadedly connected to the screw hole on the support plate (21).

6. The double-station milling machine fixture for a control rod according to claim 1, characterized in that: The passive frame (346) comprises a bracket (3461) fixedly mounted on the top of the clamping head (342); the bottom of the bracket (3461) is rotatably connected to a roller (3462); the roller (3462) can fall onto the inclined surface (3411) when it moves downward.

7. The double-station milling machine fixture for a control rod according to claim 1, characterized in that: The ejector member (347) comprises a fixed seat (3471) fixedly arranged at the bottom of the clamping head (342); a second guide groove (3472) is provided on the fixed seat (3471); a top head (3473) is slidably connected with a single degree of freedom in the second guide groove (3472); a second elastic member (3474) is fixedly arranged between the top head (3473) and the inner wall of the second guide groove (3472); and at least one top ball (3475) is rollingly connected to the top head (3473).

8. The double-station milling machine fixture for a control rod according to claim 1, characterized in that: It also includes two reinforcing assemblies (40), the two reinforcing assemblies (40) are respectively used to clamp two control rods, each reinforcing assembly (40) includes two side pressure pieces (41) and two upper pressure pieces (42), the two side pressure pieces (41) are symmetrically arranged on both sides of the support plate (21) for clamping the side edges of the control rods, and the two upper pressure pieces (42) are symmetrically arranged on both sides of the support plate (21) for clamping the top surfaces of the control rods.

9. The double-station milling machine fixture for a control rod according to claim 8, characterized in that: Each of the side pressure members (41) comprises a side pressure seat (411) fixedly mounted on the support plate (21), a screw hole being formed on the side pressure seat (411), and a second bolt (412) being threadedly connected to the screw hole on the side pressure seat (411); Each of the upper pressing members (42) comprises an upper pressing seat (421), a through hole being formed on the upper pressing seat (421), a third bolt (422) being passed through the through hole on the upper pressing seat (421), and the third bolt (422) being threadedly connected to the support plate (21).

10. The double-station milling machine fixture for a control rod according to claim 7, characterized in that: The invention also comprises an impact mechanism (50), the impact mechanism (50) comprising a seat frame (51) fixedly mounted on the support plate (21) and a lever (52) hingedly mounted on the fixed seat (3471); a guide rail (53) is fixedly mounted on the seat frame (51); a driving bar (54) is slidably connected to the guide rail (53) in a single degree of freedom; a fourth elastic member (56) is arranged between the driving bar (54) and the guide rail (53); a latching tooth (541) is arranged on the driving bar (54); a third elastic member (55) is fixedly mounted between the lever (52) and the fixed seat (3471); the lever (52) has an impact portion (521) and a second connecting portion (523) abutting against the inner wall of the avoidance hole (343); the lever (52) is deflected so that the second connecting portion (523) contacts the latching tooth (541) and the impact portion (521) contacts the top (3473).

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