Clamping device for harmonic oscillator electrode five-axis linkage machining

Abstract

The utility model discloses a clamping device for harmonic oscillator electrode five-axis linkage machining. The clamping device comprises a positioning column, an installation base and a pressing block. The positioning column is installed on five-axis linkage machining equipment through a grabbing and clamping assembly, the installation base comprises a connecting part and an installation part, the connecting part is detachably connected with the positioning column, the surface, facing the pressing block, of the installation part is provided with a boss, the surface of the boss is provided with a positioning hole matched with a harmonic oscillator electrode, and the hole bottom face of the positioning hole is provided with a first through hole penetrating through the installation base. The first through hole is matched with a to-be-processed area of the harmonic oscillator electrode; the surface, facing the boss, of the pressing block is provided with a stepped groove matched with the boss, the groove bottom face of the stepped groove is provided with a second through hole penetrating through the pressing block, the inner diameter of the second through hole is smaller than that of the positioning hole and larger than that of the first through hole, and the pressing block is installed on the installation part through cooperation of the boss and the stepped groove. And the pressing block and the mounting part are detachably connected through a first fastening structure. According to the clamping device, the machining precision and efficiency of the harmonic oscillator electrode can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of inertial navigation device preparation, in particular to a clamping device used for five-axis linkage processing of resonator electrodes. Background Art

[0002] The hemispherical resonant gyroscope is an advanced inertial navigation sensor with the characteristics of high reliability, high precision, long life and low noise. It is a type of gyroscope widely used in various strategic / tactical weapon navigation, guidance and control systems in aviation, aerospace, navigation and ground fields.

[0003] The hemispherical resonator electrode is the core component of the hemispherical resonator gyroscope. The material of the hemispherical resonator electrode is high-purity fused quartz or piezoelectric ceramic material, which belongs to the hard and brittle material, has excellent thermal, elastic modulus and low damping mechanical properties, corrosion resistance and other characteristics, and is the most ideal material for manufacturing hemispherical resonator electrodes. However, due to the characteristics of high hardness and brittleness, coupled with the particularity of the hemispherical resonator gyroscope structure, it has the disadvantages of being difficult to process, easy to break and having low toughness. Generally, after the hemispherical resonator electrode is finely ground to the required size, it is necessary to process the grooves of the electrode, mainly including grinding and chamfering the resonator assembly hole on the front side of the electrode, processing multiple conductive holes and through holes for vacuuming, and processing the PCB assembly groove and chamfering, vacuuming and avoiding holes on the back side of the electrode. Traditionally, three-axis CNC is generally used to complete the processing of the hemispherical resonator electrode slots. The processing of the front and back sides requires secondary clamping and the accuracy of the fixture is required to be very accurate. Generally, general clamps such as suction cups, chucks, and flat-nose pliers are used for clamping, which can easily cause local damage to the hemispherical resonator electrode and the shape and position tolerance of the hemispherical resonator electrode is too large, thus affecting the assembly accuracy of the hemispherical resonator gyroscope. In addition, hard and brittle materials cannot be repaired after being damaged and can only be scrapped, which leads to a significant increase in material and processing costs.

[0004] With the new development of machine tool composite technology, five-axis CNC as a representative has begun to be widely used. Five-axis linkage machining has the characteristics of high efficiency and high precision. The machining of the workpiece polyhedron can be completed in one clamping, which can significantly improve the machining accuracy of the workpiece. When five-axis CNC machining, good positioning and clamping, and easy disassembly and assembly are important prerequisites for ensuring the machining accuracy and efficiency of the workpiece. Through fixture clamping, the interference of the spindle and tool can be reduced, the complex movement of the five axes can be reduced, and the machining efficiency can be improved. Therefore, it is necessary to provide a five-axis special fixture specifically for the machining of hemispherical resonator electrode slots, which can effectively solve the difficulties and shortcomings of traditional three-axis CNC machining and improve the efficiency of five-axis machining. Summary of the invention

[0005] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a clamping device for five-axis linkage processing of a resonator electrode, which can improve the processing accuracy and efficiency of the resonator electrode.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0007] A clamping device for five-axis linkage machining of a resonator electrode, comprising a positioning column, a mounting seat and a pressing block;

[0008] The positioning column is installed on the five-axis linkage processing equipment through a grab assembly, and the mounting seat includes a connecting portion and a mounting portion, the connecting portion is detachably connected to the positioning column, and the surface of the mounting portion facing the pressing block has a boss, and the surface of the boss is provided with a positioning hole matched with the resonator electrode, and the bottom surface of the positioning hole is provided with a first through hole that penetrates the mounting seat, and the first through hole matches the area to be processed of the resonator electrode;

[0009] The surface of the pressing block facing the boss is provided with a stepped groove matching the boss, and the bottom surface of the stepped groove is provided with a second through hole penetrating the pressing block, the inner diameter of the second through hole is smaller than the positioning hole and larger than the inner diameter of the first through hole.

[0010] The pressing block is installed on the mounting portion through the cooperation of the boss and the stepped groove, and the pressing block and the mounting portion are detachably connected through a first fastening structure.

[0011] Optionally, the first fastening structure includes a bolt, a threaded hole opened on the surface of the mounting portion and cooperating with the stud of the bolt, and a mounting hole group opened on the pressing block, the mounting hole group includes a first mounting through hole and a second mounting through hole, the first mounting through hole cooperates with the corresponding threaded hole, the second mounting through hole has a hole diameter larger than the outer diameter of the nut of the bolt, and the first mounting through hole extends toward the corresponding second mounting through hole to be connected thereto; the pressing block can rotate along the circumference of the boss to the first mounting through hole or the second mounting through hole to correspond to the corresponding bolt when the bolt is loosened.

[0012] Optionally, a section of the second mounting through hole close to the mounting portion extends toward the first mounting through hole to form a waist-shaped groove.

[0013] Optionally, a plurality of the first fastening structures are provided, and the plurality of first fastening structures are distributed on the outer side of the boss at intervals along the circumferential direction.

[0014] Optionally, a slot for the connecting part to be inserted into is formed on an end surface of the positioning column facing the connecting part, and after the connecting part is inserted into the slot, it is detachably connected to the positioning column via a second fastening structure.

[0015] Optionally, the second fastening structure includes a top screw structure, which includes a top screw, a first thread hole and a second thread hole that cooperate with the top screw, the first thread hole is opened on the circumferential surface of the positioning column and is connected to the card slot, and the second thread hole is opened on one end of the surface of the connecting part facing the first thread hole, and the top screw passes through the first thread hole and the second thread hole to detachably connect the positioning column and the connecting part.

[0016] Optionally, the second fastening structure also includes a positioning pin structure, the positioning pin structure includes a positioning pin, a first pin hole and a second pin hole cooperating with the positioning pin, the first pin hole is opened on the circumferential surface of the positioning column and is connected to the card slot, and the second pin hole is opened on the surface of the connecting part at one end facing the first pin hole, and the positioning pin passes through the first pin hole and the second pin hole to detachably connect the positioning column and the connecting part.

[0017] Optionally, the top screw structure is provided with two groups, and the two groups of top screw structures are respectively arranged on both sides of the positioning pin structure.

[0018] Optionally, the clamping groove extends from both ends of the positioning post in the radial direction to pass through the circumferential surface of the positioning post.

[0019] Optionally, the gripper assembly includes a connecting disk mounted on a workbench of a five-axis linkage machining device, a chuck detachably connected to the connecting disk, and a plurality of grippers slidably mounted on the chuck. The plurality of grippers are spaced apart along the circumference of the chuck and can slide radially relative to the chuck to clamp or release the positioning column.

[0020] Compared with the prior art, the advantages of the utility model are:

[0021] 1. The clamping device for processing a resonator electrode of the utility model is designed with a mounting structure suitable for processing the front and back surfaces of the resonator electrode. Specifically, the mounting structure includes a mounting seat and a pressing block. The mounting seat has a boss on the surface facing the pressing block, and a positioning hole matching the resonator electrode is provided on the surface of the boss. A first through hole penetrating the mounting seat is provided on the bottom surface of the positioning hole, and the first through hole matches the area to be processed of the resonator electrode; a stepped groove matching the boss is provided on the surface of the pressing block, and a second through hole penetrating the pressing block is provided on the bottom surface of the stepped groove, and the inner diameter of the second through hole is smaller than the positioning hole and larger than the inner diameter of the first through hole. After the resonator electrode is installed in the positioning hole, the pressing block is installed on the mounting portion through the matching of the boss and the stepped groove, and the pressing block and the mounting portion are detachably connected through the first fastening structure, so that the resonator electrode can be firmly clamped without interfering with the processing of the resonator electrode. Furthermore, after the resonator electrode is installed on the five-axis machining equipment through the clamping device, the front and back slots can be machined without re-clamping and calibration, thus saving machining time and cost while ensuring machining accuracy.

[0022] 2. The clamping device for processing the resonator electrode of the utility model connects the mounting seat to the gripping assembly of the resonator electrode five-axis linkage processing equipment through the positioning column, which can reduce the interference between the spindle and the tool, reduce the complex movement of the five axes, and improve the processing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A schematic diagram of the structure of a clamping device for processing a resonator electrode according to Example 1 of the utility model;

[0024] Figure 2 It is a schematic diagram of the exploded structure of the clamping device for processing the resonator electrode of Example 1 of the utility model;

[0025] Figure 3 It is a schematic diagram of the three-dimensional structure of the briquette;

[0026] Figure 4 It is a schematic diagram of the three-dimensional structure of the pressing block from another perspective;

[0027] Figure 5 is a front view of the briquette;

[0028] Figure 6 is a back view of the briquette;

[0029] Figure 7 It is a structural diagram of the card grabbing assembly.

[0030] Legend: 1. Resonator electrode; 2. Mounting seat; 21. Connecting portion; 211. Second thread hole; 212. Second pin hole; 22. Mounting portion; 221. Boss; 222. Positioning hole; 223. First through hole; 224. Threaded hole; 3. Positioning column; 31. Slot; 32. First thread hole; 33. First pin hole; 4. Positioning pin; 5. Top screw; 6. Press block; 61. Step groove; 62. First mounting through hole; 63. Second mounting through hole; 64. Second through hole; 7. Bolt; 8. Chuck; 9. Connecting plate; 10. Grab; 11. Fastener. DETAILED DESCRIPTION

[0031] The present invention is further described below in conjunction with specific preferred embodiments, but the protection scope of the present invention is not limited thereby.

[0032] like Figure 1 and Figure 2 As shown, the clamping device for five-axis linkage machining of resonator electrodes in this embodiment includes a positioning column 3, a mounting seat 2 and a pressing block 6;

[0033] The positioning column 3 is installed on the five-axis linkage processing equipment through a grab assembly, and the mounting seat 2 includes a connecting portion 21 and a mounting portion 22, the connecting portion 21 is detachably connected to the positioning column 3, and the surface of the mounting portion 22 facing the pressing block 6 has a boss 221, and the surface of the boss 221 is provided with a positioning hole 222 that matches the resonator electrode 1, and the bottom surface of the positioning hole 222 is provided with a first through hole 223 that penetrates the mounting seat 2, and the first through hole 223 matches the area to be processed of the resonator electrode 1;

[0034] The surface of the pressing block 6 facing the boss 221 is provided with a stepped groove 61 that matches the boss 221. The bottom surface of the stepped groove 61 is provided with a second through hole 64 that penetrates the pressing block 6. The inner diameter of the second through hole 64 is smaller than the inner diameter of the positioning hole 222 and larger than the inner diameter of the first through hole 223.

[0035] The pressing block 6 is installed on the mounting portion 22 through the cooperation between the boss 221 and the stepped groove 61 , and the pressing block 6 and the mounting portion 22 are detachably connected via a first fastening structure.

[0036] Therefore, through the structural and assembly design of the mounting seat 2 and the pressing block 6, since the first through hole 223 opened on the bottom surface of the positioning hole 222 on the mounting seat 2 matches the area to be processed of the resonator electrode, and the inner diameter of the second through hole 64 opened on the bottom surface of the stepped groove 61 on the pressing block 6 is smaller than the positioning hole 222 and larger than the inner diameter of the first through hole 223, the resonator electrode can be firmly pressed into the positioning hole 222, and the pressing block 6 and the mounting seat 2 through the matching assembly of the boss 221 and the stepped groove 61 will not interfere with the processing of the resonator electrode.

[0037] In addition, the mounting seat 2 is connected to the gripping assembly of the resonator electrode five-axis linkage processing equipment through the positioning column 3, which can reduce the interference between the main shaft and the tool, reduce the complex movement of the five axes, and improve the efficiency of the resonator electrode slot processing.

[0038] In this embodiment, Figure 3-6 As shown, the first fastening structure includes a bolt 7, a threaded hole 224 opened on the surface of the mounting portion 22 and matched with the stud of the bolt 7, and a mounting hole group opened on the pressing block 6, the mounting hole group includes a first mounting through hole 62 and a second mounting through hole 63, the first mounting through hole 62 matches with the corresponding threaded hole 224, the second mounting through hole 63 has a hole diameter larger than the nut outer diameter of the bolt 7, and the first mounting through hole 62 extends toward the corresponding second mounting through hole 63 to be connected thereto; when the bolt 7 is loosened, the pressing block 6 can rotate circumferentially along the boss 221 to the first mounting through hole 62 or the second mounting through hole 63 to correspond to the corresponding bolt 7.

[0039] When disassembling the resonator electrode 1, it is only necessary to loosen the bolt 7, and then rotate the pressing block 6 so that the second mounting through hole 63 on the pressing block 6 corresponds to the corresponding bolt 7. Since the aperture of the second mounting through hole 63 is larger than the outer diameter of the nut of the bolt 7, the pressing block 6 can be lifted, and the bolt 7 remains on the mounting seat 2, and the resonator electrode 1 can be taken out from the positioning hole 222; after installing another resonator electrode 1 in the positioning hole 222, the pressing block 6 is installed on the mounting portion 22 in a state where the second mounting through hole 63 corresponds to the corresponding bolt 7, and then the pressing block 6 is rotated so that the first mounting through hole 63 on the pressing block 6 corresponds to the corresponding bolt 7, and then the pressing block 6 can be pressed onto the mounting portion 22 by tightening the bolt 7, that is, the resonator electrode 1 is pressed into the positioning hole 222 of the mounting portion 22. Thus, the rapid disassembly and assembly of the resonator electrode can be realized, and the efficiency of the five-axis machining of the resonator electrode slot is improved.

[0040] In this embodiment, a section of the second mounting through hole 63 close to the mounting portion 22 extends toward the first mounting through hole 62 to form a waist-shaped groove. Therefore, after the resonator electrode is installed, the nut of the bolt 7 is placed in the waist-shaped groove, which will not interfere with the processing of the resonator electrode.

[0041] In this embodiment, in order to achieve a secure installation of the resonator electrode, a plurality of first fastening structures are provided, and the plurality of first fastening structures are distributed at intervals along the circumferential direction on the outer side of the boss 221 .

[0042] In this embodiment, a slot 31 for the connecting portion 21 to be inserted into is formed on one end surface of the positioning column 3 facing the connecting portion 21 . After the connecting portion 21 is inserted into the slot 31 , it is detachably connected to the positioning column 3 via a second fastening structure.

[0043] In this embodiment, the second fastening structure includes a top screw structure, which includes a top screw 5, a first thread hole 32 and a second thread hole 211 that cooperate with the top screw 5. The first thread hole 32 is opened on the circumferential surface of the positioning column 3 and is connected to the card slot 31. The second thread hole 211 is opened on the surface of the connecting part 21 at one end facing the first thread hole 32. After the top screw 5 passes through the first thread hole 32 and the second thread hole 211, the positioning column 3 and the connecting part 21 are detachably connected.

[0044] In this embodiment, the second fastening structure also includes a positioning pin structure, the positioning pin structure includes a positioning pin 4, a first pin hole 33 and a second pin hole 212 that cooperate with the positioning pin 4, the first pin hole 33 is opened on the circumferential surface of the positioning column 3 and is connected to the slot 31, and the second pin hole 212 is opened on the surface of the connecting part 21 at one end facing the first pin hole 33. After the positioning pin 4 passes through the first pin hole 33 and the second pin hole 212, the positioning column 3 and the connecting part 21 are detachably connected.

[0045] The installation process of the positioning column 3 and the connecting part 21 is as follows: first, the connecting part 21 is embedded in the slot 31 of the positioning column 3, and then the pin 4 is inserted so that it can play a positioning role for the mounting seat 2 and the positioning column 3; then the top screw 5 is installed so that it can tighten the mounting seat 2.

[0046] In this embodiment, two groups of top screw structures are provided, and the two groups of top screw structures are respectively arranged on both sides of the positioning pin structure.

[0047] In this embodiment, the locking groove 31 extends from both ends of the positioning post 3 in the radial direction to pass through the circumferential surface of the positioning post 3 .

[0048] In this embodiment, Figure 7 As shown, the gripper assembly includes a connecting disk 9 installed on a workbench of a five-axis linkage processing device, a chuck 8 detachably connected to the connecting disk 9 via a fastener 11, and a plurality of grippers 10 slidably mounted on the chuck 8. The plurality of grippers 10 are arranged at intervals along the circumference of the chuck 8 and can slide radially relative to the chuck 8 to clamp or release the positioning column 3.

[0049] In summary, the clamping device for five-axis linkage processing of the resonator electrode of the utility model can realize one-time clamping and complete all feature processing on the front and back surfaces of the hemispherical resonator electrode, without multiple clamping corrections, which not only saves costs, but also improves quality and efficiency. The large-scale processing has high stability, which is the primary condition for batch production process development. It also avoids the operational limitations and functional limitations brought by the clamping device, reduces the interference of the spindle and the tool, reduces the complex movement of the five axes, and improves the efficiency of the resonator electrode slot processing.

[0050] The above is only a preferred embodiment of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A clamping device for five-axis linkage processing of resonator electrodes, characterized in that: It comprises a positioning column (3), a mounting seat (2) and a pressing block (6); The positioning column (3) is installed on the five-axis linkage processing equipment through a gripping assembly, the mounting seat (2) comprises a connecting portion (21) and a mounting portion (22), the connecting portion (21) is detachably connected to the positioning column (3), the mounting portion (22) has a boss (221) on its surface facing the pressing block (6), a positioning hole (222) matching the resonator electrode (1) is provided on the surface of the boss (221), a first through hole (223) penetrating the mounting seat (2) is provided on the bottom surface of the positioning hole (222), the first through hole (223) matches the area to be processed of the resonator electrode (1); The surface of the pressing block (6) facing the boss (221) is provided with a stepped groove (61) matching with the boss (221), and the bottom surface of the stepped groove (61) is provided with a second through hole (64) penetrating the pressing block (6), and the inner diameter of the second through hole (64) is smaller than the inner diameter of the positioning hole (222) and larger than the inner diameter of the first through hole (223). The pressing block (6) is mounted on the mounting portion (22) through the cooperation of the boss (221) and the stepped groove (61), and the pressing block (6) and the mounting portion (22) are detachably connected via a first fastening structure.

2. The clamping device for five-axis linkage processing of resonator electrodes according to claim 1 is characterized in that: The first fastening structure comprises a bolt (7), a threaded hole (224) provided on the surface of the mounting portion (22) and cooperating with the stud of the bolt (7), and a mounting hole group provided on the pressing block (6), wherein the mounting hole group comprises a first mounting through hole (62) and a second mounting through hole (63), wherein the first mounting through hole (62) cooperates with the corresponding threaded hole (224), the second mounting through hole (63) has a hole diameter larger than the outer diameter of the nut of the bolt (7), and the first mounting through hole (62) extends toward the corresponding second mounting through hole (63) to communicate with the second mounting through hole (63); when the bolt (7) is loosened, the pressing block (6) can rotate circumferentially along the boss (221) to the first mounting through hole (62) or the second mounting through hole (63) to correspond to the corresponding bolt (7).

3. The clamping device for five-axis linkage machining of resonator electrodes according to claim 2 is characterized in that: A section of the second mounting through hole (63) close to the mounting portion (22) extends toward the first mounting through hole (62) to form a waist-shaped groove.

4. The clamping device for five-axis linkage machining of resonator electrodes according to any one of claims 1 to 3, characterized in that: A plurality of the first fastening structures are provided, and the plurality of first fastening structures are distributed at intervals along the circumferential direction on the outer side of the boss (221).

5. The clamping device for five-axis linkage machining of resonator electrodes according to any one of claims 1 to 3, characterized in that: An end surface of the positioning column (3) facing the connecting portion (21) is provided with a slot (31) into which the connecting portion (21) can extend. After the connecting portion (21) extends into the slot (31), it is detachably connected to the positioning column (3) via a second fastening structure.

6. The clamping device for five-axis linkage machining of resonator electrodes according to claim 5 is characterized in that: The second fastening structure comprises a top screw structure, the top screw structure comprising a top screw (5), a first thread hole (32) and a second thread hole (211) matched with the top screw (5), the first thread hole (32) being formed on the circumferential surface of the positioning column (3) and being connected to the slot (31), the second thread hole (211) being formed on an end of the surface of the connecting portion (21) facing the first thread hole (32), and the top screw (5) passing through the first thread hole (32) and the second thread hole (211) connects the positioning column (3) and the connecting portion (21) in a detachable manner.

7. The clamping device for five-axis linkage machining of resonator electrodes according to claim 6, characterized in that: The second fastening structure also includes a positioning pin structure, the positioning pin structure comprising a positioning pin (4), a first pin hole (33) and a second pin hole (212) cooperating with the positioning pin (4), the first pin hole (33) being arranged on the circumferential surface of the positioning column (3) and being connected to the slot (31), the second pin hole (212) being arranged on an end of the surface of the connecting portion (21) facing the first pin hole (33), and the positioning pin (4) passing through the first pin hole (33) and the second pin hole (212) removably connects the positioning column (3) and the connecting portion (21).

8. The clamping device for five-axis linkage machining of resonator electrodes according to claim 7 is characterized in that: The top screw structure is provided with two groups, and the two groups of top screw structures are respectively arranged on both sides of the positioning pin structure.

9. The clamping device for five-axis linkage machining of resonator electrodes according to claim 5, characterized in that: The clamping groove (31) extends from both ends of the positioning column (3) in the radial direction to a circumferential surface that passes through the positioning column (3).

10. The clamping device for five-axis linkage machining of resonator electrodes according to any one of claims 1 to 3, characterized in that: The gripper assembly comprises a connection disk (9) mounted on a workbench of a five-axis linkage processing device, a chuck (8) detachably connected to the connection disk (9), and a plurality of grippers (10) slidably mounted on the chuck (8); the plurality of grippers (10) are arranged at intervals along the circumference of the chuck (8) and can slide relative to the chuck (8) along its radial direction to clamp or release the positioning column (3).

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