Multi-process multi-linkage five-axis numerical control grinding machine mechanism

Abstract

The utility model relates to a kind of multi-process multi-link five-axis numerical control grinding machine mechanism, including rack, the rack upper end front side is equipped with double rotary table, the double rotary table includes A-axis rotary table and C-axis rotary table, the A-axis rotary table upper end evenly distribution flow guide groove, the C-axis rotary table is located A-axis rotary table upper end center, and C-axis rotary table upper end is equipped with clamping seat, and the rack upper end left and right side is symmetrically equipped with X-axis electric screw rod assembly, each X-axis electric screw rod assembly is thread transmission cooperation connection X-axis crossbeam, the X-axis crossbeam transmission connection Z-axis grinding assembly, with the advantages that workpiece clamping stability is strengthened, effective wide-angle heat dissipation, prevent chip accumulation.

Description

Technical Field

[0001] This utility model relates to the field of five-axis grinding machine technology, and in particular to a multi-process, multi-linkage five-axis CNC grinding machine mechanism. Background Technology

[0002] A five-axis CNC grinding machine is a process testing device that uses a CNC system to control five motion axes to achieve complex surface machining. It adopts linear grinding wheel continuous grinding technology, and the linear motor transmission system can achieve a contour machining accuracy of 0.002mm. The equipment integrates an automatic tool changer system and a modular grinding wheel group structure, supports synchronous machining of irregular workpieces with dual grinding heads, and has built-in loading and unloading robotic arms and intelligent detection mechanisms to significantly improve the level of automation.

[0003] Patent application number CN202320962170.2 is a Chinese utility model patent, disclosing a five-axis CNC grinding machine. The five-axis CNC grinding machine includes a grinding machine body; a base is provided at the bottom of the grinding machine body, and a fixed plate is fixedly connected inside the base. Several fixedly connected cylinders and columns are provided on the top of the fixed plate, and a movable mounting plate is provided above the cylinders. In this utility model, the extended cylinders can lift the corresponding first protrusion through the universal joint at the top. The bottom end of the corresponding first protrusion rotates and tilts inside the universal joint, allowing for easy adjustment of the tilt direction of the grinding machine body via the mounting plate at the top. The entire adjustment process is very convenient and quick. However, this device has the following problems: firstly, it cannot effectively cool the grinding area; secondly, the stability of the device in clamping the workpiece is poor. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies. This device uses a quick-connect coolant inlet on the spray shroud and a built-in fan-shaped nozzle to uniformly spray coolant into the grinding area in a fan-shaped atomization. At the same time, the spray shroud can cover the contact surface between the grinding head and the workpiece, preventing water splashing and contamination. Meanwhile, the guide groove of the A-axis rotary table can quickly remove chips. This device uses a clamping seat to firmly fix the workpiece, solving the technical problems of ineffective cooling of the grinding area and poor workpiece stability in existing technologies.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A multi-process, multi-linkage five-axis CNC grinding machine mechanism includes a frame. The upper front side of the frame is provided with a double rotary table, which includes an A-axis rotary table and a C-axis rotary table. The upper part of the A-axis rotary table is evenly distributed with guide grooves. The C-axis rotary table is located at the center of the upper part of the A-axis rotary table and is provided with a clamping seat on the upper part of the C-axis rotary table. The upper left and right sides of the frame are symmetrically provided with X-axis electric lead screw assemblies. Each X-axis electric lead screw assembly is threadedly connected to an X-axis crossbeam. The X-axis crossbeam is driven to connect to a Z-axis grinding assembly.

[0007] As a preferred embodiment, the clamping base includes a base plate, on the left and right sides of which protrusions are integrally formed to form a U-shaped structure. The front and rear sides of the right protrusion are provided with through guide holes, and each guide hole is slidably fitted with a guide post. The left sides of the two guide posts are fixedly connected to clamping blocks, and the clamping blocks are located at the center of the clamping base.

[0008] As a preferred embodiment, the clamping block is divided into two independent blocks, which are fixedly connected to two guide posts respectively, and the upper end of the clamping block is flush with the upper end of the two side protrusions.

[0009] As a preferred embodiment, the Z-axis grinding assembly includes a slide block, with a motor located at the center of the upper end of the slide block. The output shaft of the motor's front center output end is connected to a first helical gear via a keyway. The first helical gear meshes with and drives a second helical gear. The lower end of the second helical gear is fixedly connected to a Z-axis lead screw, which is located at the center of the front end of the slide block. Guide rods are provided on both the left and right sides of the Z-axis lead screw, and the guide rods are fixedly connected to the left and right sides of the front end of the slide block. The Z-axis lead screw is threadedly connected to a grinding seat, and the grinding seat slides with the guide rods. A spray nozzle and a grinding head are bolted to the front end of the grinding seat, and the grinding head is located at the center of the spray nozzle.

[0010] As a preferred embodiment, the upper end and the front sides of the left and right ends of the spray hood are provided with quick-connect coolant inlets. Each quick-connect coolant inlet is threaded to an external pipe, and a fan-shaped nozzle is fixedly connected to the inner side of each quick-connect coolant inlet. The fan-shaped nozzle is located on the inner wall of the spray hood.

[0011] As another preferred embodiment, the internal space of the spray hood is adapted to accommodate the grinding head, and the lower space of the spray hood is adapted to accommodate the upper part of the double turntable.

[0012] The beneficial effects of this utility model are:

[0013] (1) In this utility model, the workpiece clamping stability is enhanced by setting a clamping seat and a clamping block. When the workpiece size changes, the two independent clamping blocks slide in the hole through the guide post. The clamping position can be adjusted according to the workpiece size. The workpiece can be reliably fixed at any angle, adapting to workpieces of different shapes. The sliding cooperation between the clamping block and the guide post allows for fine-tuning of the clamping force of the clamping block according to the workpiece, avoiding workpiece deformation and improving yield.

[0014] (2) In this utility model, the contact surface between the grinding head and the workpiece is efficiently cooled by the spray hood and the quick coolant inlet. When the device is grinding, the inside of the spray hood can accommodate the grinding head and the double turntable. The coolant is sprayed evenly to the grinding area in the form of a fan-shaped atomization through the nozzle, which can cover the contact surface between the grinding head and the workpiece. The high temperature generated during the grinding process can easily cause the workpiece or grinding head to burn. The wide-angle spray of the fan-shaped nozzle can provide effective and efficient heat dissipation.

[0015] (3) In this utility model, the guide grooves evenly distributed on the upper end of the A-axis can quickly discharge the coolant and chips from the grinding area while rotating during the grinding process, which can effectively prevent chip accumulation.

[0016] In summary, this device has the advantages of enhancing workpiece clamping stability, effectively dissipating heat over a wide angle, and preventing chip accumulation, making it particularly suitable for the field of five-axis grinding technology. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0019] Figure 2 This is a schematic diagram of the double turntable structure in this utility model.

[0020] Figure 3 This is a schematic diagram of the clamping seat structure in this utility model.

[0021] Figure 4 This is a schematic diagram of the Z-axis grinding assembly in this utility model.

[0022] Figure 5 This is a schematic diagram showing the position of the grinding head in this utility model.

[0023] Figure 6 This is a schematic diagram of the liquid spray hood structure in this utility model. Detailed Implementation

[0024] The technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings.

[0025] Example 1

[0026] like Figures 1 to 6As shown, this utility model provides a multi-process, multi-linkage five-axis CNC grinding machine mechanism, including a frame 1. A double rotary table 2 is provided on the front upper side of the frame 1. The double rotary table 2 includes an A-axis rotary table 21 and a C-axis rotary table 22. Guide grooves 211 are evenly distributed on the upper end of the A-axis rotary table 21, with a depth of 2mm. When the double rotary tables 2 rotate, centrifugal force guides the coolant and chips to the edge of the rotary table. The C-axis rotary table 22 is located at the center of the upper end of the A-axis rotary table 21. The A-axis rotary table 21 achieves 120° rotation via a motor on its right side. The high-precision swing, the linkage C-axis turntable realizes the rotation of the AC axis through the continuous 360° rotation of the turntable motor at the lower end, and the upper end of the C-axis turntable 22 is provided with a clamping seat 23, and the upper end of the frame 1 is symmetrically provided with X-axis electric lead screw assemblies 3 on the left and right sides. The servo motor drives the lead screw 3 through a coupling. The lead screw nut is fixed on the X-axis crossbeam 4. The guide rail ensures that the X-axis crossbeam 4 moves along a straight line. Each X-axis electric lead screw assembly 3 is threadedly connected to the X-axis crossbeam 4. The X-axis crossbeam 4 is connected to the Z-axis grinding assembly 5.

[0027] Furthermore, the clamping base 23 includes a base plate 231, on which protrusions 232 are integrally formed on the left and right sides, forming a U-shaped structure. The front and rear sides of the right protrusion 232 are provided with through guide holes, and each guide hole is slidably fitted with a guide post 24. The guide post 24 is clearance-fitted with the guide hole, and the right end of the guide post 24 is provided with a threaded locking mechanism. The left sides of the two guide posts 24 are fixedly connected to clamping blocks 241, and the clamping blocks 241 are located at the center of the clamping base 23. After the workpiece is placed in the center of the base plate 231, the guide post 24 can be manually pushed to drive the clamping block 241 to clamp the workpiece.

[0028] Furthermore, the clamping block 241 is divided into two independent blocks, which are fixedly connected to the two guide posts 24 respectively. The upper end of the clamping block 241 is flush with the upper end of the two side protrusions 232. The two independent clamping blocks 241 slide in the guide hole through the guide post 24. The clamping position can be adjusted according to the workpiece size. The workpiece can be reliably fixed at any angle, which can adapt to workpieces of different shapes. The sliding cooperation between the clamping block 241 and the guide post 24 allows for fine-tuning of the clamping force of the clamping block according to the workpiece, avoiding workpiece deformation and improving the yield rate.

[0029] Furthermore, the Z-axis grinding assembly 5 includes a slide 51, with a motor 52 located at the center of the upper end of the slide 51. The output shaft of the motor 52 is connected to a first helical gear 521 via a keyway at its front center output end. The first helical gear 521 meshes with and drives a second helical gear 522. The lower end of the second helical gear 522 is fixedly connected to a Z-axis lead screw 53. The Z-axis lead screw 53 is located at the center of the front end of the slide 51. Guide rods 54 are provided on both the left and right sides of the Z-axis lead screw 53. The guide rods 54 are fixedly connected to the left and right sides of the front end of the slide 51. The Z-axis lead screw 53 is threadedly connected to a grinding seat 55. The grinding seat 55 is slidably fitted with the guide rods 54. The front end of the grinding seat 55 is bolted to a spray nozzle 551 and a grinding head 552. The grinding head 552 is located at the center of the spray nozzle 551.

[0030] Furthermore, the upper end and the front sides of the left and right ends of the spray cover 551 are provided with quick-connect coolant inlets 5511. The quick-connect coolant inlets 5511 adopt quick-connect connectors. Each quick-connect coolant inlet 5511 is threaded to an external pipe. The pipe is connected to an external high-pressure pump. A fan-shaped nozzle 5512 is fixedly connected to the inner side of each quick-connect coolant inlet 5511. The spray angle of the fan-shaped nozzle 5512 is 60°. The fan-shaped nozzle 5512 has a vortex chamber inside to atomize the coolant and increase the coverage area. The fan-shaped nozzle 5512 is located on the inner wall of the spray cover 551.

[0031] Furthermore, the internal space of the spray nozzle 551 is adapted to accommodate the grinding head 552, and the lower space of the spray nozzle 551 is adapted to accommodate the upper end of the double rotary table 2. When the device is performing grinding, the inside of the spray nozzle 551 accommodates the grinding head 552 and the double rotary table 2. The coolant is evenly sprayed to the grinding area in a fan-shaped atomization form through the fan-shaped nozzle 5512, which can cover the contact surface between the grinding head 552 and the workpiece. The high temperature generated during the grinding process can easily cause the workpiece or grinding head to burn out. The wide-angle fan-shaped spray of the fan-shaped nozzle 5512 can provide effective and efficient heat dissipation.

[0032] Working process: First, the operator places the workpiece to be processed in the center of the base plate 231 of the clamping seat 23. According to the size of the workpiece, the operator manually adjusts the two independent clamping blocks 241 in the guide hole of the right protrusion 232. The clamping blocks 241 slide along the guide post 24 and fit tightly against both sides of the workpiece. Then, they are fixed by the threaded locking mechanism at the right end of the guide post 24. Next, the A-axis turntable 21 and C-axis turntable 22 of the double turntable drive the workpiece to rotate and swing. Then, the servo motor in the X-axis electric lead screw assembly 3 synchronously drives the ball screw to move the X-axis crossbeam 4 laterally along the linear guide rail, positioning the Z-axis grinding assembly 5 above the workpiece. Then, the motor 52 of the Z-axis grinding assembly 5 drives the Z-axis lead screw 53 to rotate through the meshing of the first helical gear 521 and the second helical gear 522, causing the grinding seat 55 to descend along the guide rod 54 until the grinding head 552 contacts the surface of the workpiece. Then, the grinding head 552 grinds the surface of the workpiece to realize the processing operation.

[0033] It is worth mentioning that when the device is performing grinding, the inside of the spray shroud 551 accommodates the grinding head 552 and the double rotary table 2. The coolant is sprayed evenly to the grinding area in a fan-shaped atomization form through the fan-shaped nozzle 5512, which can cover the contact surface between the grinding head 552 and the workpiece. The high temperature generated during the grinding process can easily cause the workpiece or grinding head to burn out. The wide-angle fan-shaped spray of the fan-shaped nozzle 5512 can provide effective and efficient heat dissipation. In addition, the semi-enclosed space formed by the lower opening of the spray shroud 551 and the double rotary table 2 effectively blocks splashing. At the same time, the mixture of chips and coolant generated by grinding is discharged along the guide groove 211 under the centrifugal force of the high-speed rotation of the A-axis rotary table 21.

[0034] In the description of this utility model, it should be understood that the terms "front and back", "left and right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the utility model.

[0035] Of course, those skilled in the art should understand that the term "a" should be understood as "at least one" or "one or more". That is, in one embodiment, the number of an element can be one, while in another embodiment, the number of the element can be multiple. The term "a" should not be understood as a limitation on the quantity.

[0036] The above description is merely a preferred embodiment of this utility model, but the scope of protection of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art under the technical guidance of this utility model should be included within the scope of protection of this utility model. Therefore, the scope of protection of this utility model should be determined by the scope of the claims.

Claims

1. A multi-process, multi-linkage five-axis CNC grinding machine mechanism, characterized in that: The machine includes a frame (1), and a double rotary table (2) is provided on the front side of the upper end of the frame (1). The double rotary table (2) includes an A-axis rotary table (21) and a C-axis rotary table (22). The upper end of the A-axis rotary table (21) is evenly distributed with guide grooves (211). The C-axis rotary table (22) is located at the center of the upper end of the A-axis rotary table (21), and the upper end of the C-axis rotary table (22) is provided with a clamping seat (23). The left and right sides of the upper end of the frame (1) are symmetrically provided with X-axis electric screw assemblies (3). Each X-axis electric screw assembly (3) is threadedly connected to an X-axis crossbeam (4). The X-axis crossbeam (4) is connected to a Z-axis grinding assembly (5).

2. The mechanism of a multi-process, multi-linkage five-axis CNC grinding machine according to claim 1, characterized in that, The clamping seat (23) includes a base plate (231). The base plate (231) has protrusions (232) integrally formed on the left and right sides, forming a U-shaped structure. The right protrusion (232) has through guide holes on the front and rear sides. Each guide hole has a sliding guide post (24). The two guide posts (24) are fixedly connected to the left side of the clamping block (241), and the clamping block (241) is located at the center of the clamping seat (23).

3. The mechanism of a multi-process, multi-linkage five-axis CNC grinding machine according to claim 2, characterized in that, The clamping block (241) is divided into two independent blocks, which are fixedly connected to two guide posts (24) respectively, and the upper end of the clamping block (241) is flush with the upper end of the two side protrusions (232).

4. The mechanism of a multi-process, multi-linkage five-axis CNC grinding machine according to claim 1, characterized in that, The Z-axis grinding assembly (5) includes a slide (51), a motor (52) is provided at the center of the upper end of the slide (51), the output shaft of the motor (52) is connected to a first helical gear (521) via a keyway at the center output end of the front side of the motor (52), the first helical gear (521) meshes with a second helical gear (522), the lower end of the second helical gear (522) is fixedly connected to a Z-axis lead screw (53), the Z-axis lead screw (53) is located at the center of the front end of the slide (51), the left and right sides of the Z-axis lead screw (53) are provided with guide rods (54), the guide rods (54) are fixedly connected to the left and right sides of the front end of the slide (51), and the Z-axis lead screw (53) is threadedly connected to a grinding seat (55), the grinding seat (55) is slidably connected to the guide rods (54), the front end of the grinding seat (55) is bolted to a spray nozzle (551) and a grinding head (552), the grinding head (552) is located at the center of the spray nozzle (551).

5. The mechanism of a multi-process, multi-linkage five-axis CNC grinding machine according to claim 4, characterized in that, The spray cover (551) is provided with quick-connect coolant inlets (5511) at the upper end and the front sides of the left and right ends. Each quick-connect coolant inlet (5511) is threaded to an external pipe, and a fan-shaped nozzle (5512) is fixedly connected to the inner side of each quick-connect coolant inlet (5511). The fan-shaped nozzle (5512) is located on the inner wall of the spray cover (551).

6. The mechanism of a multi-process, multi-linkage five-axis CNC grinding machine according to claim 5, characterized in that, The internal space of the spray nozzle (551) is adapted to accommodate the grinding head (552), and the lower space of the spray nozzle (551) is adapted to accommodate the upper end of the double turntable (2).

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