Quick-mounting fixture for five-axis machining

Abstract

The utility model belongs to processing fixture technical field especially is concerned about a kind of quick mounting fixture for five-axis machining.The kind of quick mounting fixture for five-axis machining, including main body, quick change mechanism and transmission mechanism, the main body includes connecting seat, is equipped with several mounting holes on the connecting seat, the upper end of the connecting seat is fixedly installed with connecting table;The quick change mechanism includes base, the bottom end of the base is connected with the top end of connecting table, the upper end of the base is fixedly installed with mounting seat, the upper end of the mounting seat is equipped with the first docking hole and the second docking hole for inserting workpiece pin shaft or cylindrical boss, and the inner clamping block can be radially clamped into the workpiece positioning feature;The transmission mechanism includes power box, and two-way screw rod and wedge mechanism are driven by knob operation, and the synchronous action of clamping block is realized.The utility model replaces point-by-point bolt fixation by unified knob operation, improves workpiece mounting and dismounting efficiency, satisfies five-axis machining center continuous efficient production demand.

Description

Technical Field

[0001] This utility model belongs to the field of machining fixture technology, specifically a quick-assembly fixture for five-axis machining. Background Technology

[0002] In the high-precision manufacturing scenario of a five-axis machining center, rapid loading and unloading of workpieces is the key to achieving efficient processing of multiple varieties and small batches of workpieces, which directly affects equipment downtime and production efficiency.

[0003] Existing methods for securing workpieces to fixtures typically require pre-drilling threaded holes on the side of the fixture. Bolts are then manually or electrically screwed into the corresponding threaded holes, using the axial force of the bolts to lock and secure the workpiece. While this method ensures connection strength and positioning accuracy, in actual loading and unloading operations, operators must first loosen and remove each bolt from the fixture, replace it with a new workpiece, and then tighten the bolts one by one. This process is time-consuming and cannot fully utilize the high-speed and high-efficiency advantages of a five-axis machining center. Utility Model Content

[0004] In view of the technical problems existing in the background art, this utility model provides a quick-assembly fixture for five-axis machining.

[0005] To achieve the above objectives, the technical solution provided by this utility model is as follows: A quick-setup fixture for five-axis machining includes a main body and a quick-change mechanism. The main body includes a connecting seat with several mounting holes and a connecting platform fixedly mounted on the top of the connecting seat. The quick-change mechanism includes a base fixedly connected to the top of the connecting table. A mounting seat is fixedly installed on the top of the base. A pair of first mating holes are opened on each side of the top surface of the mounting seat, and a pair of second mating holes are opened in the middle of the top surface of the mounting seat. Several positioning holes are also opened on the top surface of the mounting seat. The first mating holes and the second mating holes clamp the pins or bosses of the workpiece.

[0006] Optionally, a first movable groove is provided on the inner side of each first docking hole, and a first clamping block is slidably connected inside each first movable groove.

[0007] Optionally, a second movable groove is provided on both sides of the interior of the second mating hole, and a second clamping block is slidably connected inside the second movable groove, with each pair of second clamping blocks arranged symmetrically.

[0008] Optionally, both sides of the inner side wall of the mounting base are rotatably connected to a bidirectional screw, and both ends of the bidirectional screw are threaded to a trapezoidal slider.

[0009] Optionally, wedge blocks are installed on the opposing surfaces of the first clamping block and the second clamping block, and the two sides of the trapezoidal slider abut against the wedge blocks at their adjacent positions.

[0010] Optionally, each pair of wedges has a T-slot on its facing surface, and the two sides of the trapezoidal slider are slidably connected to the T-slots at their corresponding positions.

[0011] Optionally, it also includes a transmission mechanism, which includes a power box, one side of which is connected to one side of the mounting base. A pair of worm gears are rotatably connected to the inside of the power box, and the central shafts on one side of the pair of worm gears are respectively connected to one end of a pair of bidirectional screws.

[0012] Optionally, a rotating shaft is rotatably connected to the upper part of the power box. A worm is fitted on the upper end of the worm wheel on the rotating shaft. The worm meshes with the worm wheel. A knob is rotatably connected to one end of the power box. The central shaft on one side of the knob is connected to one end of the rotating shaft.

[0013] This utility model has the following advantages and beneficial effects: This invention achieves rapid insertion and radial clamping of workpiece pins or cylindrical bosses by setting up a multi-hole quick-change structure and a wedge-shaped clamping assembly. By setting up a transmission mechanism, combined with worm gear self-locking transmission and unified knob operation, and utilizing the technical characteristics of mechanical transmission amplification and wedge mechanical amplification, it provides a fast and accurate synchronous clamping function. This method can effectively clamp the workpiece pins or cylindrical bosses and maintain the stability and uniform force distribution during the clamping process.

[0014] Compared to the traditional point-by-point bolt tightening method, this design avoids production efficiency issues caused by long equipment downtime and complex operation, achieving integrated insertion, positioning, and clamping operations, and significantly improving workpiece changeover efficiency. Through a multi-hole collaborative clamping design, when a workpiece needs to be changed, all clamping points can be simultaneously released via a unified knob operation, ensuring rapid workpiece loading and unloading and consistent clamping force, meeting the technical requirements of multi-variety, small-batch continuous production in five-axis machining centers. Attached Figure Description

[0015] Figure 1 The overall structure of the five-axis machining quick-set fixture of this utility model Figure 1 ; Figure 2 The overall structure of the five-axis machining quick-set fixture of this utility model Figure 2 ; Figure 3 This is a partial view of the quick-setup fixture for five-axis machining according to this utility model. Figure 1 ; Figure 4 This is a partial view of the quick-setup fixture for five-axis machining according to this utility model. Figure 2 ; Figure 5 This is a partial view of the quick-setup fixture for five-axis machining according to this utility model. Figure 3 .

[0016] Reference numerals: 1. Main body; 101. Connecting seat; 102. Connecting platform; 103. Mounting hole; 2. Quick-change mechanism; 201. Base; 202. Mounting seat; 203. First mating hole; 204. Positioning hole; 205. Second mating hole; 206. First movable groove; 207. Second movable groove; 208. Bidirectional screw; 209. First clamping block; 210. Second clamping block; 211. Wedge block; 212. T-slot; 213. Trapezoidal slider; 3. Transmission mechanism; 301. Power box; 302. Knob; 303. Rotating shaft; 304. Worm; 305. Worm wheel. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments.

[0018] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0019] Example like Figures 1-5 As shown, a quick-assembly fixture for five-axis machining includes a main body 1, a quick-change mechanism 2 and a transmission mechanism 3. The main body 1 includes a connecting seat 101, which has several mounting holes 103. A connecting platform 102 is fixedly installed on the top of the connecting seat 101. The quick-change mechanism 2 includes a base 201 fixedly connected to the top of the connecting platform 102. A mounting seat 202 is fixedly installed on the top of the base 201. A pair of first mating holes 203 are opened on each side of the top surface of the mounting seat 202. A pair of second mating holes 205 are opened in the middle of the top surface of the mounting seat 202. Several positioning holes 204 are also opened on the top surface of the mounting seat 202. The first mating holes 203 and the second mating holes 205 clamp the pins or bosses of the workpiece. The positioning pins on the workpiece are inserted into the positioning holes 204 for positioning.

[0020] Furthermore, each of the first mating holes 203 has a first movable groove 206 on its inner side. Each of the first movable grooves 206 has a first clamping block 209 slidably connected inside. The first movable groove 206 inside the first mating hole 203 provides sliding space for the first clamping block 209. The first clamping block 209 can move in the groove to form a lateral clamping of the workpiece inserted into the first mating hole 203, thereby enhancing the connection stability between the tooling and the mounting base 202 and preventing the tooling from shaking during five-axis machining.

[0021] Furthermore, a second movable groove 207 is provided on both sides of the interior of the second docking hole 205. A second clamping block 210 is slidably connected inside the second movable groove 207. Each pair of second clamping blocks 210 is symmetrically arranged. The second movable groove 207 on both sides of the second docking hole 205 provides a sliding path for the second clamping blocks 210. The symmetrically arranged second clamping blocks 210 can clamp the tooling from both sides simultaneously, forming a lateral clamping on both sides of the workpiece inserted into the second docking hole 205, forming a complementary clamping with the first clamping block 209, further improving the tooling fixing effect.

[0022] Furthermore, both sides of the inner sidewalls of the mounting base 202 are rotatably connected to bidirectional screws 208. Both ends of the bidirectional screws 208 are threadedly connected to trapezoidal sliders 213. The threads of the two ends of the bidirectional screws 208 inside the mounting base 202 are opposite in direction. When rotated, they can drive the trapezoidal sliders 213 at both ends to move synchronously towards or away from each other, providing synchronous driving force for the clamping action of the first clamping block 209 and the second clamping block 210, ensuring uniform clamping force on both sides, and avoiding uneven force on the tooling leading to displacement.

[0023] Furthermore, wedge blocks 211 are installed on the opposing surfaces of the first clamping block 209 and the second clamping block 210. The two sides of the trapezoidal slider 213 abut against the wedge blocks 211 at their adjacent positions. The wedge blocks 211 of the first clamping block 209 and the second clamping block 210 abut against the trapezoidal slider 213. When the trapezoidal slider 213 moves, it squeezes the wedge blocks 211 through the wedge surface, converting the lateral movement of the trapezoidal slider 213 into the longitudinal clamping action of the clamping block, thereby achieving tight clamping of the workpiece inserted into the first docking hole 203 and the second docking hole 205. The wedge structure has high transmission efficiency and stable clamping force.

[0024] Furthermore, T-slots 212 are provided on the opposing surfaces of the wedge blocks 211. The two sides of the trapezoidal slider 213 are slidably connected to the corresponding T-slots 212. The T-slots 212 of the wedge blocks 211 and the trapezoidal slider 213 are slidably connected, which guides the relative movement of the two, prevents the trapezoidal slider 213 from separating from or deviating from the wedge blocks 211 when it moves, and limits the trapezoidal slider 213 to ensure that it moves linearly with the rotation of the bidirectional screw 208.

[0025] Furthermore, it also includes a transmission mechanism 3, which includes a power box 301. One side of the power box 301 is connected to one side of the mounting base 202. A pair of worm gears 305 are rotatably connected to the inside of the power box 301. The central shafts on one side of the pair of worm gears 305 are respectively connected to one end of a pair of bidirectional screws 208. The worm gears 305 in the power box 301 are connected to the bidirectional screws 208, which can convert the power transmitted by the worm 304 into the rotational power of the bidirectional screws 208. The worm gears 305 have a large and stable transmission torque, which can ensure that the bidirectional screws 208 drive the trapezoidal slider 213 to move smoothly.

[0026] Furthermore, it also includes a transmission mechanism 3, which includes a power box 301. One side of the power box 301 is connected to one side of the mounting base 202. The upper part of the power box 301 is rotatably connected to a rotating shaft 303. Worms 304 are fitted on the upper end of the worm wheel 305 on the rotating shaft 303. The worms 304 mesh with the worm wheel 305. A knob 302 is rotatably connected to one end of the power box 301. The central shaft of the knob 302 is connected to one end of the rotating shaft 303. The rotating shaft 303 drives the worms 304 on both sides to mesh synchronously with the worm wheel 305, realizing the synchronous rotation of a pair of bidirectional screws 208, ensuring that the clamping mechanisms on both sides move in unison. The knob 302 allows the operator to manually drive the rotating shaft 303, which is convenient to operate and can accurately control the clamping force. At the same time, the worm wheel 305 and worm 304 transmission has self-locking properties, which can fix the position of the bidirectional screws 208, prevent the clamping blocks from loosening, and ensure the stability of the tooling clamping.

[0027] The working principle of this solution is as follows: In use, the main body 1 is first fixed to the five-axis equipment turntable through the mounting holes 103 of the connecting seat 101. The connecting platform 102 cooperates with the base 201 to ensure accurate positioning of the quick-change mechanism 2. The workpiece's pin or cylindrical boss is inserted into the first mating hole 203 and the second mating hole 205 of the mounting seat 202, and the tooling is initially positioned through the positioning hole 204. Rotating the knob 302 of the power box 301 drives the rotating shaft 303 to rotate, causing the worm gear 304 on the rotating shaft 303 to simultaneously mesh with the worm wheels 305 on both sides, thus driving the bidirectional screw 208 inside the mounting seat 202 to rotate. The threads at both ends of the bidirectional screw 208 drive the trapezoidal slider 213 to move synchronously in opposite directions. The trapezoidal slider 213 slides along the T-slot 212 of the wedge block 211 and squeezes the wedge block 211, converting the lateral movement into a longitudinal clamping force. This causes the first clamping block 209 to clamp the tooling docking parts synchronously along the first movable slot 206 and the second clamping block 210 along the second movable slot 207. The worm gear 305 and the worm 304 self-lock to fix the position of the bidirectional screw 208, ensuring stable clamping of the workpiece and enabling quick workpiece replacement. During disassembly, rotating the knob 302 in the opposite direction will release the clamping, allowing for convenient removal of the workpiece.

[0028] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A quick-setup fixture for five-axis machining, characterized in that, It includes a main body (1) and a quick-change mechanism (2). The main body (1) includes a connecting seat (101), and the connecting seat (101) has several mounting holes (103). A connecting platform (102) is fixedly installed on the top of the connecting seat (101). The quick-change mechanism (2) includes a base (201) fixedly connected to the top of the connecting platform (102). A mounting seat (202) is fixedly installed on the top of the base (201). A pair of first mating holes (203) are opened on both sides of the top surface of the mounting seat (202). A pair of second mating holes (205) are opened in the middle of the top surface of the mounting seat (202). A number of positioning holes (204) are also opened on the top surface of the mounting seat (202). The first mating holes (203) and the second mating holes (205) clamp the pin or boss of the workpiece.

2. The quick-setup fixture for five-axis machining according to claim 1, characterized in that: The inner side of each of the first docking holes (203) is provided with a first movable groove (206), and a first clamping block (209) is slidably connected inside each of the first movable grooves (206).

3. The quick-setup fixture for five-axis machining according to claim 2, characterized in that: The second docking hole (205) has a second movable groove (207) on both sides inside. The second movable groove (207) is slidably connected with a second clamping block (210) inside. Each pair of second clamping blocks (210) is symmetrically arranged.

4. A quick-setup fixture for five-axis machining according to claim 3, characterized in that: Both sides of the inner sidewalls of the mounting base (202) are rotatably connected to a bidirectional screw (208), and both ends of the bidirectional screw (208) are threadedly connected to a trapezoidal slider (213).

5. A quick-setup fixture for five-axis machining according to claim 4, characterized in that: The first clamping block (209) and the second clamping block (210) are each equipped with a wedge block (211) on their opposing surfaces, and the two sides of the trapezoidal slider (213) abut against the wedge block (211) at their adjacent positions.

6. A quick-setup fixture for five-axis machining according to claim 5, characterized in that: Each pair of wedge blocks (211) has a T-slot (212) on its facing surface, and the two sides of the trapezoidal slider (213) are slidably connected to the T-slot (212) at their corresponding positions.

7. A quick-setup fixture for five-axis machining according to claim 1, characterized in that: It also includes a transmission mechanism (3), which includes a power box (301). One side of the power box (301) is connected to one side of the mounting base (202). A pair of worm gears (305) are rotatably connected to the inner side of the power box (301). The central shaft of one side of the pair of worm gears (305) is connected to one end of a pair of bidirectional screws (208).

8. A quick-setup fixture for five-axis machining according to claim 7, characterized in that: The upper part of the power box (301) is rotatably connected to a rotating shaft (303). A worm (304) is fitted on the upper end of the worm wheel (305) on the rotating shaft (303). The worm (304) meshes with the worm wheel (305). A knob (302) is rotatably connected to one end of the power box (301). The central axis of one side of the knob (302) is connected to one end of the rotating shaft (303).

Images