A coaxial positioning tool clamp

Abstract

The utility model relates to the technical field of fixture, disclose a coaxial positioning frock fixture, including bottom plate, install quick -joint on the bottom plate, still include clamping frock, clamping frock installs on the bottom plate, and clamping frock includes clamping part, power part, clamping part includes support plate, a plurality of clamping units, and clamping unit two two a group, and the clamping unit of same group is opposite and sets up, and clamping unit includes transmission shaft, bevel gear, mobile group, clamping rod, clamping spring, and power part is used for driving transmission shaft rotation, the utility model discloses through setting up a plurality of clamping units mutual cooperation transmission, has realized to the positioning clamping of electrode head only needs single power input effect, that is through reducing the setting of power source, has simplified the operation step, is convenient for pipeline layout of integral equipment simultaneously, makes appearance more neat and beautiful, sets up the size of input air pressure, adjusts the clamping force of clamping rod to electrode head, and for the electrode head of different material quality can adjust the suitable clamping force quickly.

Description

Technical Field

[0001] This utility model relates to the field of fixture technology, specifically, a coaxial positioning tooling fixture. Background Technology

[0002] Electrochemical machining (ECM) is a machining method that removes metal materials through electrochemical reactions. Its basic principle is to utilize electrolysis, where an electric current in an electrolyte causes a redox reaction on the workpiece surface, thereby removing the metal. During the machining process, coaxial positioning fixtures are required to clamp the electrode head, ensuring accurate relative positioning between the electrode head and the working shaft of the EDM machine. This ensures the dimensional accuracy of the machined workpiece.

[0003] The existing Chinese utility model patent with publication number CN218396335U provides a spark gap machine clamp, including a mounting base, a first adjusting member, a second adjusting member, a clamping member, a first slider, and a second slider. The first and second sliding grooves intersect to form a cross shape, and the first sliding groove slidably connects two first sliders, etc. It uses two sets of independent clamps to center and clamp electrode heads of different models. However, because the two sets of clamps are independent of each other, they need to be controlled separately to complete the clamping operation; this process is not only cumbersome to operate, but also difficult to control the clamping force. Utility Model Content

[0004] The purpose of this utility model is to provide a coaxial positioning tooling fixture to solve the problems of existing fixtures that require the control of multiple sets of fixtures to complete the positioning, which is cumbersome and difficult to control the clamping force.

[0005] This utility model is achieved through the following technical solution: a coaxial positioning fixture, including a base plate, on which a quick connector is mounted, and a clamping fixture, which is mounted on the base plate, and the clamping fixture includes a clamping part and a power part; The clamping part includes a support plate and multiple clamping units, which are arranged in pairs with the clamping units in the same group facing each other. Each clamping unit includes a drive shaft, bevel gears, a moving assembly, a clamping rod, and a clamping spring. The drive shaft is rotatably connected to the base plate, the bevel gears are mounted on the drive shaft, and adjacent bevel gears mesh. The drive shaft is provided with external threads, the moving assembly is engaged with the external threads, the clamping rod is slidably connected to the moving assembly, the clamping spring is disposed between the clamping rod and the moving assembly, and the support plate is mounted on the base plate. The power unit is used to drive the transmission shaft to rotate.

[0006] To better realize this utility model, the movable assembly further includes a movable base, an adjusting component, and a mounting base. The base plate includes a plate body and a sliding groove disposed on the plate body. The movable base is slidably connected to the sliding groove, and the clamping rod is slidably connected to the mounting base. The adjusting component is used to adjust the distance between the movable base and the mounting base, thereby adjusting the longitudinal height of the clamping rod.

[0007] To better realize this utility model, the adjusting component further includes an adjusting screw and a guide rod, both of which are rotatably connected to the movable base. The mounting base is slidably engaged with the guide rod, and the adjusting screw is threadedly connected to the mounting base.

[0008] To better realize this utility model, the power unit further includes multiple independently arranged power units, each power unit corresponding to a clamping unit, and driving any one of the power units can drive the clamping unit.

[0009] To better realize this utility model, the power unit further includes a pneumatic assembly, a push plate, and a threaded engagement protrusion. The pneumatic assembly is mounted on the base plate, the push plate is mounted on the output end of the pneumatic assembly, and the threaded engagement protrusion is mounted on the side wall of the push plate. The transmission shaft also includes an internal thread, and the threaded engagement protrusion engages with the internal thread.

[0010] To better realize this utility model, the pneumatic assembly further includes a pneumatic tube and an actuating rod, the actuating rod being slidably connected to the pneumatic tube, and the push plate being mounted on the actuating rod.

[0011] To better realize this utility model, a return spring is further installed on the transmission shaft, and the other end of the return spring abuts against the push plate.

[0012] Compared with the prior art, this utility model has the following advantages and beneficial effects: (1) By setting up multiple clamping units to cooperate and drive each other, this utility model realizes that only a single power input is needed to position and clamp the electrode head. That is, by reducing the setting of power sources, the operation steps are simplified, and the pipeline layout of the overall equipment is facilitated, making the appearance more neat and beautiful. (2) By setting an adjustment component, this utility model enables the tooling to position and clamp electrode heads of different thicknesses. (3) By setting the input air pressure, the clamping force of the clamping rod on the electrode head can be adjusted, that is, the clamping force on the electrode head can be changed at will. For electrode heads of different materials, the appropriate clamping force can be quickly adjusted. At the same time, compared with the motor as the driving source, pneumatic can reduce the layout of related cables, and it is also more convenient to change the clamping force by adjusting the air pressure. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of the present utility model. Figure 1 .

[0014] Figure 2 This is a schematic diagram of the overall structure of the present utility model. Figure 2 .

[0015] Figure 3 This is a cross-sectional view of the overall structure of this utility model.

[0016] Figure 4 This is a schematic diagram of the drive shaft and bevel gear structure.

[0017] Figure 5 This is a schematic diagram of the clamping unit structure.

[0018] Figure 6 This is a cross-sectional view of the power unit structure.

[0019] Figure 7 This is a schematic diagram of the power unit structure.

[0020] Wherein: 10-base plate; 20-quick connector; 30-clamping fixture; 40-electrode head; 101-plate body; 102-slide groove; 301-drive shaft; 3011-external thread; 3012-internal thread; 302-pneumatic pipe; 303-bevel gear; 304-moving base; 305-clamping rod; 306-clamping spring; 307-adjusting screw; 308-mounting seat; 309-smooth rod; 310-reset spring; 311-acting rod; 312-push plate; 313-threaded engagement protrusion; 314-support plate. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0023] Example 1: This embodiment provides a coaxial positioning fixture, specifically as follows: Figures 1-5 As shown, the device includes a base plate 10 on which a quick connector 20 is mounted, and a clamping fixture 30 mounted on the base plate 10. The clamping fixture 30 includes a clamping part and a power part. The clamping part includes a support plate 314 and multiple clamping units, which are arranged in pairs, with the clamping units in the same group facing each other. Each clamping unit includes a drive shaft 301, a bevel gear 303, a moving part, a clamping rod 305, and a clamping spring 306. The drive shaft 301 rotates... The bevel gear 303 is mounted on the transmission shaft 301 and connected to the base plate 10. Two adjacent bevel gears 303 mesh with each other. The transmission shaft 301 is provided with an external thread 3011. The moving assembly cooperates with the external thread 3011. The clamping rod 305 is slidably connected to the moving assembly. The clamping spring 306 is disposed between the clamping rod 305 and the moving assembly. The support plate 314 is mounted on the base plate 10. The power unit is used to drive the transmission shaft 301 to rotate.

[0024] When clamping the electrode head 40, the electrode head 40 is placed on the support plate 314, which supports the electrode head 40. Then, the power unit drives a transmission shaft 301 to rotate. At this time, the transmission shaft 301 drives the corresponding bevel gear 303 to rotate. Since adjacent bevel gears 303 are meshed, the bevel gears 303 will be driven in sequence, so that all the transmission shafts 301 start to rotate. At this time, the two bevel gears 303 in the same clamping unit have opposite rotation directions. Therefore, the two moving groups will move closer to each other under the action of the external thread 3011, that is, the two clamping rods 305 start to approach the electrode head 40 until... The electrode head 40 contacts the surface of the electrode head 40, and then the moving assembly continues to move, and the electrode head 40 begins to center. Then the clamping spring 306 is compressed, so that the clamping rod 305 presses tightly on the electrode head 40, thus realizing the centering function in one direction. Since multiple clamping units are provided, centering in multiple directions can be performed. That is, through multi-directional positioning, the clamping and fixing of the electrode head 40 and the coaxiality of the electrode head 40 and the quick connector 20 are realized. Then the quick connector 20 is installed on the EDM machine. At this time, the electrode head 40 is in a coaxial state with the working shaft of the EDM machine, thereby ensuring that the electrode head 40 can accurately process the workpiece.

[0025] When the four sides of the electrode head 40 are of equal length, multiple clamping springs 306 will compress simultaneously. If the electrode head 40 is rectangular, the clamping spring 306 will compress when the clamping rod 305 of one clamping unit begins to clamp the short side. Then, the clamping rod 305 of another clamping unit begins to clamp the long side, and the corresponding clamping spring 306 will also compress. Because it is rectangular, the compression amount of the clamping springs 306 in different groups is not the same, thus ensuring that multiple moving groups can still clamp electrode heads 40 of different shapes under the same travel distance. This achieves positioning and clamping of electrode heads 40 of different shapes and specifications.

[0026] By setting up multiple clamping units that work together to drive the transmission, the electrode head 40 can be positioned and clamped with only a single power input. This simplifies the operation by reducing the number of power sources and also facilitates the overall pipeline layout of the equipment, resulting in a cleaner and more aesthetically pleasing appearance.

[0027] Example 2: This embodiment further expands the moving group based on the above embodiments, specifically as follows: Figure 5As shown, the movable assembly includes a movable base 304, an adjusting member, and a mounting base 308. The base plate 10 includes a plate body 101 and a sliding groove 102 disposed on the plate body 101. The movable base 304 is slidably connected to the sliding groove 102, and the clamping rod 305 is slidably connected to the mounting base 308. The adjusting member is used to adjust the distance between the movable base 304 and the mounting base 308, thereby adjusting the longitudinal height of the clamping rod 305.

[0028] Furthermore, the adjusting component includes an adjusting screw 307 and a guide rod 309, both of which are rotatably connected to the movable base 304. The mounting base 308 is slidably engaged with the guide rod 309, and the adjusting screw 307 is threadedly connected to the mounting base 308.

[0029] Before clamping, after the electrode head 40 is stabilized on the support plate 314, manually rotate the adjusting screw 307 to move the mounting base 308 longitudinally so that the clamping rod 305 can be accurately aligned with the side of the electrode head 40 to prevent incomplete contact during subsequent clamping. After adjusting the height of the mounting base 308, the drive shaft 301 rotates to drive the moving base 304 to move, so that the clamping rod 305 positions and clamps the electrode head 40.

[0030] By setting adjustment components, this fixture can position and clamp electrode heads 40 of different thicknesses.

[0031] The other parts of this embodiment are the same as those in the above embodiments, and will not be described again.

[0032] Example 3: This embodiment further expands the power unit based on the above embodiment, specifically as follows: Figure 2 , Figure 3 , Figure 5 , Figure 6 , Figure 7 As shown, the power unit includes multiple independently configured power units, each corresponding to a clamping unit. Driving any one of the power units will drive the clamping unit. In other words, connecting any external air pipe to any power unit will drive the clamping unit, thus simplifying the connection steps between the quick connector 20 and the EDM machine. Furthermore, the position of the external air pipe can be freely arranged, no longer limited to a specific direction.

[0033] Furthermore, the power unit includes a pneumatic assembly, a push plate 312, and a threaded engagement protrusion 313. The pneumatic assembly is mounted on the base plate 10, the push plate 312 is mounted on the output end of the pneumatic assembly, and the threaded engagement protrusion 313 is mounted on the side wall of the push plate 312. The transmission shaft 301 also includes an internal thread 3012, and the threaded engagement protrusion 313 engages with the internal thread 3012. The pneumatic assembly includes a pneumatic tube 302 and an actuating rod 311. The actuating rod 311 is slidably connected to the pneumatic tube 302, and the push plate 312 is mounted on the actuating rod 311. A return spring 310 is mounted on the transmission shaft 301, and the other end of the return spring 310 abuts against the push plate 312.

[0034] When the drive shaft 301 needs to be rotated, the external air pipe is connected to the connection at the end of the pneumatic pipe 302. Then, the external air pump inputs a stable air pressure into the pneumatic pipe 302. At this time, the air pressure in the pneumatic pipe 302 increases, pushing the action rod 311 to extend. The action rod 311 drives the push plate 312 to extend synchronously, and the return spring 310 is compressed. Since the threaded engagement protrusion 313 meshes with the internal thread 3012, the threaded engagement protrusion 313 can drive the drive shaft 301 to rotate. Then, the clamping rod 305 begins to position and clamp the electrode head 40. When the air pressure in the pneumatic pipe 302 is equal to the external input air pressure, the action rod 311 no longer extends, and the clamping rod 305 no longer further squeezes the electrode head 40. When it is necessary to release the electrode head 40, the external air pump stops working, and the air pressure in the pneumatic tube 302 is restored. Due to the elastic force of the return spring 310 and the clamping spring 306, the actuating rod 311 begins to retract. When the clamping rod 305 no longer contacts the electrode head 40, due to the elastic force of the return spring 310, the actuating rod 311 retracts further until the return spring 310 returns to its normal length position. At this time, the entire clamping unit returns to its initial state.

[0035] By setting the input air pressure, the clamping force of the clamping rod 305 on the electrode head 40 can be adjusted, meaning the clamping force on the electrode head 40 can be changed at will. For electrode heads 40 made of different materials, the appropriate clamping force can be quickly adjusted. Furthermore, compared to using a motor as a drive source, pneumatics reduces the amount of wiring involved, and adjusting the clamping force by regulating air pressure is also more convenient.

[0036] The other parts of this embodiment are the same as those in the above embodiments, and will not be described again.

[0037] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Any simple modifications or equivalent changes made to the above embodiments based on the technical essence of the present utility model shall fall within the protection scope of the present utility model.

Claims

1. A coaxial positioning fixture, comprising a base plate (10), wherein a quick connector (20) is mounted on the base plate (10), characterized in that, It also includes a clamping fixture (30), which is mounted on the base plate (10) and includes a clamping part and a power part; The clamping part includes a support plate (314) and multiple clamping units. The clamping units are arranged in pairs, with the clamping units in the same group facing each other. The clamping unit includes a drive shaft (301), a bevel gear (303), a moving group, a clamping rod (305), and a clamping spring (306). The drive shaft (301) is rotatably connected to the base plate (10). The bevel gear (303) is mounted on the drive shaft (301). Two adjacent bevel gears (303) mesh. The drive shaft (301) is provided with an external thread (3011). The moving group cooperates with the external thread (3011). The clamping rod (305) is slidably connected to the moving group. The clamping spring (306) is disposed between the clamping rod (305) and the moving group. The support plate (314) is mounted on the base plate (10). The power unit is used to drive the transmission shaft (301) to rotate.

2. The coaxial positioning fixture according to claim 1, characterized in that: The movable assembly includes a movable base (304), an adjusting component, and a mounting base (308). The base plate (10) includes a plate body (101) and a sliding groove (102) provided on the plate body (101). The movable base (304) is slidably connected to the sliding groove (102), and the clamping rod (305) is slidably connected to the mounting base (308). The adjusting component is used to adjust the distance between the movable base (304) and the mounting base (308), thereby adjusting the longitudinal height of the clamping rod (305).

3. The coaxial positioning fixture according to claim 2, characterized in that: The adjusting component includes an adjusting screw (307) and a guide rod (309). The adjusting screw (307) and the guide rod (309) are rotatably connected to the movable base (304). The mounting base (308) is slidably engaged with the guide rod (309). The adjusting screw (307) is threadedly connected to the mounting base (308).

4. A coaxial positioning fixture according to any one of claims 1-3, characterized in that: The power unit includes multiple independently configured power units, each power unit corresponding to a clamping unit. Driving any one of the power units will drive the clamping unit.

5. A coaxial positioning fixture according to claim 4, characterized in that: The power unit includes a pneumatic assembly, a push plate (312), and a threaded engagement protrusion (313). The pneumatic assembly is mounted on the base plate (10), the push plate (312) is mounted on the output end of the pneumatic assembly, and the threaded engagement protrusion (313) is mounted on the side wall of the push plate (312). The transmission shaft (301) also includes an internal thread (3012), and the threaded engagement protrusion (313) engages with the internal thread (3012).

6. A coaxial positioning fixture according to claim 5, characterized in that: The pneumatic assembly includes a pneumatic tube (302) and an actuating rod (311). The actuating rod (311) is slidably connected to the pneumatic tube (302), and the push plate (312) is mounted on the actuating rod (311).

7. A coaxial positioning fixture according to claim 5, characterized in that: A return spring (310) is installed on the drive shaft (301), and the other end of the return spring (310) abuts against the push plate (312).

Images