Sapphire machining clamp for machining center
By designing a sapphire machining fixture for machining centers, using cylinder-driven OK clamps and adjustable positioning blocks, the problems of cumbersome operation and low positioning accuracy of traditional fixtures are solved, and efficient multi-workpiece machining is achieved.
Patent Information
- Application Number
- CN202422285830.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-19
- Publication Date
- 2025-08-05
- Estimated Expiration
- 2034-09-19
AI Technical Summary
In the prior art, when processing sapphires, traditional fixtures are cumbersome to operate, have low positioning accuracy, low production efficiency, and have limited number of clamps that can be clamped in a single time.
A sapphire machining fixture for machining centers is designed, and the sapphire workpiece is directly fixed with cylinder-driven OK clamps. Combined with adjustable positioning blocks and workpiece positioning seats, it realizes high-precision positioning and simultaneous machining of multiple workpieces.
It improves the positioning accuracy and production efficiency of sapphire, and can clamp multiple workpieces at the same time, simplifies the operation process and improves processing efficiency.
Smart Images
Figure CN223186754U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of sapphire processing, in particular to a sapphire processing fixture for a machining center. Background Technique
[0002] Sapphire has the characteristics of high hardness and high brittleness, and cannot be directly clamped by traditional fixtures such as flat-jaw vice and three-jaw chuck. Therefore, in the prior art, when machining sapphire workpieces such as sheet sapphire plates on a machining center by grinding, cutting, etc., the hot bonding method or the cold bonding method is adopted to fix the sapphire on a metal workpiece fixture, and fixtures such as flat-jaw vice and three-jaw chuck are used to fix the metal workpiece fixture, so as to indirectly clamp and position the sapphire.
[0003] However, in this method, clamping the metal workpiece fixture by fixtures such as flat-jaw vice and three-jaw chuck is cumbersome, the loading and unloading time is long, and the production efficiency is low; by using the hot bonding method or the cold bonding method to fix the sapphire workpiece such as a sapphire plate on the metal workpiece fixture and then fixing the metal workpiece fixture, the positioning accuracy is greatly affected by the clamping and tightening force and the clamping offset of fixtures such as flat-jaw vice and three-jaw chuck, and the positioning accuracy of the sapphire is low; the fixtures such as flat-jaw vice and three-jaw chuck are relatively large in volume, the clamping stations of the machining center are limited, and the number of sapphires that can be clamped at one time is limited, which limits the processing efficiency. Summary of the Invention
[0004] The purpose of the utility model is to provide a sapphire processing fixture for a machining center aiming at the problems existing in the prior art. The sapphire is fixed on the workpiece bonding surface provided on the workpiece positioning seat of the fixture, and the fixture is directly fixed in the clamping seat of the machining center. The spindle of the machining center is connected with a tool to process the sapphire. Therefore, the fixture is easy to operate, the positioning accuracy of the sapphire is high, the fixture can fix multiple groups of sapphires at one time and perform machining such as grinding and cutting simultaneously, and the production efficiency is high.
[0005] The technical solution of the utility model is realized as follows:
[0006] A sapphire processing fixture for a machining center, comprising a mounting plate, at the lower end of the mounting plate, a plurality of cylinders arranged linearly are mounted, at the upper end of the mounting plate, OK clamps with the same number as the cylinders are provided, the wedge parts of each OK clamp are connected to the piston rods of the corresponding cylinders, both sides of the wedge part of each OK clamp are clamping parts, workpiece positioning seats are respectively placed on both sides of each OK clamp, the workpiece positioning seats on each side are arranged linearly, the outer parts of the workpiece positioning seats on both sides are respectively positioned by the provided positioning blocks, the inner parts of the workpiece positioning seats on both sides are clamped and fixed by the clamping parts of the OK clamps, at the upper end of each workpiece positioning seat, a workpiece bonding surface for bonding a workpiece is provided, the positioning blocks are adjustable positioning blocks, and are installed on both sides of the upper end of the mounting plate by screws, an isolation limiting block is provided between two adjacent workpiece positioning seats arranged linearly, and at both sides of the lower end of the mounting plate, a plurality of support columns are provided, and the mounting plate is installed on the machining center through the support columns.
[0007] Preferably, inclined surfaces extending inwards are provided on both clamping parts on both sides of the OK clamp, and the inclined surfaces extending inwards cooperate with the inclined surfaces extending outwards provided on the inner part of the workpiece positioning seat to clamp and fix the workpiece positioning seat.
[0008] Preferably, an inwardly extending slope is provided on the inner part of the positioning block, and the inwardly extending slope cooperates with the outwardly extending slope provided on the outer part of the workpiece positioning seat to position the workpiece positioning seat.
[0009] Preferably, strip-shaped mounting holes extending towards both sides are provided in the positioning block, and screws pass through the strip-shaped mounting holes to adjustably fix the positioning block on both sides of the upper end of the mounting plate.
[0010] Preferably, a plurality of U-shaped holes are provided on both sides of the mounting plate, and the support columns are fixed to the lower ends of the U-shaped holes by bolts.
[0011] Preferably, the height of the support columns is higher than the height of the cylinders.
[0012] Preferably, the workpiece bonding surface for bonding a workpiece is perpendicular to the machine tool spindle.
[0013] With the above scheme, the sapphire processing fixture can directly clamp and position sapphire workpieces such as sheet sapphire plates. Compared with the indirect fixing form of first bonding the sapphire workpiece to a metal tooling and then fixing the metal tooling to fixtures such as a flat-jaw vice and a three-jaw chuck, it has the advantages of higher positioning accuracy and simple operation; the workpiece positioning seat is designed to be detachable, which is convenient for bonding and clamping the sapphire workpiece, and corresponding workpiece positioning seats can be selected according to the size and shape of the sapphire workpiece, with a wide range of applications; the utility model has a plurality of workpiece positioning seats, can clamp a plurality of sapphire workpieces, and simultaneously perform processing such as grinding and cutting. Compared with the traditional clamping method, it has the advantage of high production efficiency. Description of the Drawings
[0014] Figure 1 is a schematic structural view of the present utility model;
[0015] Figure 2 is a front view of the present utility model;
[0016] Figure 3 is a top view of the present utility model;
[0017] Figure 4 is a bottom view of the present utility model. Specific embodiments
[0018] The OK clip adopted in this embodiment is a wedge-type expansion clip. The OK clip 6 is a two-way OK clip, including a wedge block portion 6.1 and clip mouth portions 6.2 provided on both sides of the wedge block portion 6.1. The wedge block portion 6.1 contacts the clip mouth portions 6.2 through a V-groove structure. The wedge block portion 6.1 is connected to the piston rod of the air cylinder 7, and the OK clip 6 is fixed on the mounting plate 2. During operation, under the action of the air cylinder 7, the wedge block portion 6.1 drives the clip mouth portions 6.2 to move towards both sides to complete the clamping and loosening of the workpiece.
[0019] See Figures 1 to 4, a sapphire processing fixture for a machining center. A plurality of cylinders 7 arranged linearly are bolted to the lower end of the mounting plate 2. In this embodiment, two cylinders 7 are used, and the cylinders are arranged on the central axis of this processing fixture. The same number of OK clamps 6 as the number of cylinders 7 are provided at the upper end of the mounting plate 2. The number of the OK clamps 6 is two. The wedge parts 6.1 of each OK clamp 6 are connected to the piston rods of the corresponding cylinders 7. On both sides of the wedge part 6.1 of each OK clamp 6 are clamping parts 6.2. Workpiece positioning seats 4 are placed on both sides of each OK clamp 6 respectively. The number of the workpiece positioning seats 4 is 4. The workpiece positioning seats 4 are rectangular bodies with inclined surfaces 9 extending outward on both lower ends. Inwardly extending inclined surfaces 10 are provided on both clamping parts 6.2 on both sides of the OK clamp 6. The inwardly extending inclined surfaces 10 cooperate with the outwardly extending inclined surfaces 9 provided on the inner sides of the workpiece positioning seats 4. The OK clamp 6 applies outward and downward forces to the workpiece positioning seats 4 to position the workpiece positioning seats 4. Corresponding workpiece positioning seats 4 with corresponding specifications and dimensions can be selected according to the size of the sapphire workpiece 5. The workpiece positioning seats 4 on each side are arranged linearly. The outer sides of the workpiece positioning seats 4 on both sides are respectively positioned by positioning blocks 3 provided. The number of the positioning blocks 3 is four. The positioning blocks 3 are rectangular bodies with inwardly extending slopes 11 provided on the inner sides. The inwardly extending slopes 11 cooperate with the outwardly extending inclined surfaces 9 provided on the outer sides of the workpiece positioning seats 4. The positioning blocks 3 apply inward and downward forces to the workpiece positioning seats 4 to position the workpiece positioning seats 4. Through the cooperation of the OK clamps 6 and the positioning blocks 3, the workpiece positioning seats 4 are fixed to the upper end of the mounting plate 2. Workpiece bonding surfaces for bonding the workpiece 5 are provided at the upper ends of each workpiece positioning seat 4. The number of the workpiece bonding surfaces is four. The workpiece bonding surfaces are arranged perpendicular to the machine tool spindle. The positioning blocks 3 are adjustable positioning blocks. Two strip-shaped mounting holes 12 extending towards both sides are provided in the positioning blocks 3. Screws pass through the strip-shaped mounting holes 12 to fix the positioning blocks 3 adjustably to both sides of the upper end of the mounting plate 2. According to the size of the workpiece positioning seats 4, the fixing positions of the screws are set along the strip-shaped mounting holes 12 extending towards both sides. Isolation limit blocks 8 are provided between two adjacent workpiece positioning seats 4 arranged linearly. The isolation limit blocks 8 are rectangular bodies and the number is two. They are fixed to the upper end of the mounting plate 2 by screws and are used to position the adjacent workpiece positioning seats 4. Three U-shaped holes are provided on both sides of the mounting plate 2 respectively. Six support columns 1 with heights higher than the cylinders 7 are fixed to the lower ends of the corresponding U-shaped holes by bolts. The support columns 1 are fixedly connected to the machining table of the machining center by T-shaped screws.
[0020] The inwardly extending inclined surfaces 10 provided at the lower parts of the clamping parts 6.2 on both sides of the OK clamp 6 form an angle of 40° with the horizontal. The outwardly extending inclined surfaces 9 provided at both lower ends of the workpiece positioning seats 4 form an angle of 50° with the horizontal. The inwardly extending slopes 11 provided at the lower ends of the positioning blocks 3 form an angle of 35° with the horizontal.
[0021] The workpiece positioning seat 4 is made of 7075 aluminum alloy, the OK clamp 6 is made of 40Cr material with surface hardening and rust prevention treatment, the positioning block 3 is made of stainless steel or 45# steel with surface painting, the mounting plate 2 is made of stainless steel, and the support column 1 is made of 45# steel with surface painting.
[0022] During use, the workpiece positioning seat 4 can be taken out from the processing fixture, and the sapphire workpiece 5 is fixed on the workpiece bonding surface of the workpiece positioning seat 4 by means of wax bonding or the like. The cylinder 7 drives the two clamping mouth parts 6.2 of the OK clamp 6 to move towards both sides, and the clamping mouth parts 6.2 cooperate with the positioning block 3 to fix the workpiece positioning seat 4 on the mounting plate 2. The tool connected to the machine tool spindle processes the sapphire workpiece 5 such as grinding and cutting.
[0023] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. Any modifications made to the present invention by those skilled in the art without departing from the spirit of the present invention fall within the protection scope of the present invention.
Claims
1. A sapphire processing fixture for a machining center, characterized by: The invention comprises a mounting plate (2), wherein a plurality of cylinders (7) arranged in a linear manner are mounted on the lower end of the mounting plate (2), and an OK clamp (6) having the same number as the cylinders (7) is arranged on the upper end of the mounting plate (2), wherein a wedge portion (6.1) of each OK clamp (6) is connected to a piston rod of a corresponding cylinder (7), and both sides of the wedge portion (6.1) of each OK clamp (6) are clamping portions (6.2), and workpiece positioning seats (4) are respectively placed on both sides of each OK clamp (6), and the workpiece positioning seats (4) on each side are arranged in a linear manner, and the outer sides of the workpiece positioning seats (4) on both sides are provided with The positioning blocks (3) are positioned respectively, and the inner sides of the workpiece positioning seats (4) on both sides are clamped and fixed by the clamping portion (6.2) of the OK clamp (6). The upper end of each workpiece positioning seat (4) is provided with a workpiece bonding surface for bonding the workpiece (5). The positioning blocks (3) are adjustable positioning blocks and are installed on both sides of the upper end of the mounting plate (2) by screws. An isolation limit block (8) is provided between two adjacent workpiece positioning seats (4) arranged linearly. A plurality of support columns (1) are provided on both sides of the lower end of the mounting plate (2), and the mounting plate (2) is installed on the machining center through the support columns (1).
2. The sapphire processing fixture for a machining center according to claim 1, characterized in that: The clamping portions (6.2) on both sides of the OK clamp (6) are provided with inwardly extending inclined surfaces (10), and the inwardly extending inclined surfaces (10) cooperate with the outwardly extending inclined surfaces (9) provided on the inner side of the workpiece positioning seat (4) to clamp and fix the workpiece positioning seat (4).
3. The sapphire processing fixture for a processing center according to claim 1, characterized in that: The inner side of the positioning block (3) is provided with an inwardly extending slope (11), and the inwardly extending slope (11) cooperates with the outwardly extending inclined surface (9) provided on the outer side of the workpiece positioning seat (4) to position the workpiece positioning seat (4).
4. The sapphire processing fixture for a processing center according to claim 1, characterized in that: The positioning block (3) is provided with a strip-shaped mounting hole (12) extending toward both sides, and screws pass through the strip-shaped mounting hole (12) to adjustably fix the positioning block (3) to both sides of the upper end of the mounting plate (2).
5. The sapphire processing fixture for a processing center according to claim 1, characterized in that: A plurality of U-shaped holes are provided on both sides of the mounting plate (2), and the support column (1) is fixed to the lower ends of the corresponding U-shaped holes by means of bolts.
6. The sapphire processing fixture for a processing center according to claim 1, characterized in that: The height of the support column (1) is higher than the height of the cylinder (7).
7. The sapphire processing fixture for a processing center according to claim 1, characterized in that: The workpiece bonding surface for bonding the workpiece (5) is perpendicular to the main axis of the machine tool.