CNC (Computer Numerical Control) clamp for processing thin surface of glass

Abstract

A CNC clamp for glass thin surface machining comprises a mounting base, a floating air cylinder, a fixed base and a floating adjusting assembly, an air pipe connector is arranged on the side face of the mounting base, a vacuum air channel which is communicated with the air pipe connector and penetrates through the upper surface of the mounting base to form an air vent is arranged in the mounting base, and a mounting groove is formed in the upper surface of the mounting base; the floating cylinder is fixed in the mounting groove, and the telescopic end extends out of the mounting groove; the fixed base is fixed on the upper surface of the mounting base, a non-circular guide hole and a plurality of adsorption holes are formed in the upper surface of the fixed base, and a penetrating hole communicated with the non-circular guide hole is formed in the side surface of the fixed base; the floating connecting plate is embedded into the non-circular guide hole and fixed to the telescopic end of the floating air cylinder, the vacuum suction head is fixed to the floating connecting plate, the vacuum air nozzle penetrates through the penetrating hole and is fixedly connected with the vacuum suction head, and an air suction groove communicated with the vacuum air nozzle is formed in the upper surface of the vacuum suction head. And the upper surface of the fixed base and the upper surface of the vacuum suction head form a product mounting surface.

Description

TECHNICAL FIELD

[0001] The utility model relates to glass processing technical field especially a kind of CNC fixture for glass thin surface processing. BACKGROUND

[0002] In the CNC (Computer Numerical Control, computer numerical control) processing of glass product, glass product needs to be fixed on the base of CNC machine to realize the alignment of glass product and CNC cutter. At present, the industry mainly processes CNC base according to the median value of product size, and the product is placed on the surface of CNC base by artificial feeding, then pressed flat, and at the same time, the vacuum suction fixing device on the CNC base is opened, so that the product is fixed before processing. Then start the CNC machine, after the machine processes according to the program, take out the product by artificial way to complete the CNC processing of glass product. In the case of using the above CNC base, since the CNC base is processed according to the median value of product size, the glass and CNC base may have a small gap at the bonding surface due to the influence of glass feeding size and CNC base processing tolerance, which is difficult to detect and correct by artificial naked eye or manual method. When processing glass thin surface, the part corresponding to the gap at the lower part of the thin surface is difficult to be fully fixed and supported, which may cause processing lines, product cracking and large stress in the product due to vibration during processing. The above phenomena will affect the product quality and yield. SUMMARY

[0003] Therefore, it is necessary to provide a CNC fixture for glass thin surface processing, which can compensate for product processing tolerance and fixture manufacturing tolerance, provide stable support for the product, and improve product processing quality and yield.

[0004] A CNC fixture for glass thin surface processing, comprising:

[0005] An installation base is provided with a gas pipe interface on the side surface for communication with an external vacuum device, and a vacuum air duct is arranged in the installation base. The vacuum air duct penetrates the side surface of the installation base and communicates with the gas pipe interface. The vacuum air duct penetrates the upper surface of the installation base and forms an air outlet. An installation groove is formed on the side of the upper surface of the installation base beside the air outlet.

[0006] A floating air cylinder is embedded in the installation groove and fixedly connected with the installation base. The air inlet end of the floating air cylinder communicates with an external air pressure device, and the telescopic end of the floating air cylinder extends out of the installation groove.

[0007] A fixed base is fixed to the upper surface of the mounting base and sealingly engages with the mounting base, the upper surface of the fixed base is provided with a plurality of adsorption holes communicated with the air vent and a non-circular guide hole corresponding to the telescopic end of the floating cylinder, the side surface of the fixed base is provided with a through hole communicated with the non-circular guide hole; and

[0008] A floating adjusting assembly includes a floating connecting plate embedded in the non-circular guide hole and sleeved and fixed to the telescopic end of the floating cylinder, a vacuum suction head fixed to the upper surface of the floating connecting plate, a vacuum nozzle penetrating the through hole and fixedly connected with the vacuum suction head, the annular side surface of the vacuum suction head and the annular side surface of the floating connecting plate are adapted to the inner contour shape of the non-circular guide hole, the upper surface of the vacuum suction head is provided with an air suction groove, the vacuum nozzle is communicated with the air suction groove and an external vacuum equipment, and the upper surface of the fixed base and the upper surface of the vacuum suction head jointly form a product mounting surface.

[0009] In one of the embodiments, the lower surface of the floating connecting plate is provided with a limiting groove, the floating adjusting assembly further includes a linear bearing fixed in the limiting groove, a dirt-proof mounting piece fixed to the bottom end of the linear bearing, and a deflection-preventing pin fixed to the upper surface of the mounting base, the deflection-preventing pin penetrates the dirt-proof mounting piece and is inserted into the linear bearing, and the deflection-preventing pin is slidingly engaged with the linear bearing.

[0010] In one of the embodiments, the floating adjusting assembly further includes a dirt-proof washer, one side of the dirt-proof mounting piece adjacent to the linear bearing is provided with a clamping groove, the dirt-proof washer is sleeved on the deflection-preventing pin and embedded in the clamping groove, and the dirt-proof washer is respectively abutted with the groove bottom surface of the clamping groove and the bottom of the linear bearing.

[0011] In one of the embodiments, the upper surface of the mounting base is provided with a threaded hole, the lower part of the deflection-preventing pin is provided with a positioning ring, the lower part of the positioning ring is provided with a screw rod rotatingly inserted into the threaded hole and threadedly engaged with the threaded hole, and the diameter of the positioning ring or the minimum width on the positioning ring is greater than the inner diameter of the threaded hole.

[0012] In one of the embodiments, the upper surface of the mounting base is provided with a recess, the fixed base is arranged in the recess and screw-connected with the mounting base, and the mounting groove and the air vent are both provided on the groove bottom surface of the recess.

[0013] In one of the embodiments, a plurality of positioning pins are arranged and fixed on the groove bottom surface of the recess at intervals, and the lower surface of the fixed base is provided with a plurality of positioning holes corresponding to the positioning pins.

[0014] In one of the embodiments, the upper surface of the mounting base is further provided with an avoiding groove located at the edge of the recess and penetrating the groove bottom surface of the recess.

[0015] In one of the embodiments, the installation groove penetrates through the side surface of the installation base and forms a penetrating gap, the air inlet end of the floating cylinder penetrates through the penetrating gap and communicates with the external air pressure device.

[0016] In one of the embodiments, the installation groove penetrates through the lower surface of the installation base and forms an installation opening in the lower surface of the installation base, the groove edge of the installation groove is raised towards the middle part of the installation groove to form a limiting baffle, and the floating cylinder is screw-connected with the limiting baffle.

[0017] The CNC clamp for glass thin surface processing is implemented, the height of the vacuum suction head is adjusted through the floating cylinder, when a gap is left after the upper surface of the fixed base and the product are attached due to the product incoming tolerance or the clamp manufacturing tolerance, the telescopic end of the floating cylinder will automatically float up and lift the vacuum suction head, the product is adsorbed through the vacuum suction head and the fixed base, the lower surface of the product is attached to the vacuum suction head and the fixed base, the product processing tolerance and the clamp manufacturing tolerance are compensated, the stable support of the product can be realized, the machining vibration problem caused by the large-area vacancy under the product machining surface is avoided, and then the product vibration deformation problem caused by the cutting pressure is avoided, so that the product surface machining quality and the machining yield are improved. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a structural schematic view of the CNC clamp in one of the embodiments of the utility model;

[0019] Figure 2 It is an exploded structural schematic view of the CNC clamp in one of the embodiments of the utility model;

[0020] Figure 3 It is a structural schematic view of the floating cylinder and the anti-deflection pin fixed in the installation base in one of the embodiments of the utility model;

[0021] Figure 4 It is a sectional structural schematic view of the CNC clamp in one of the embodiments of the utility model;

[0022] Figure 5 It is a sectional structural schematic view of the CNC clamp clamping the product in one of the embodiments of the utility model. DETAILED DESCRIPTION

[0023] In order to make the above-mentioned purpose, features and advantages of the utility model more obvious and easy to understand, the specific implementation of the utility model is described in detail below. In the following description, a lot of specific details are set forth in order to fully understand the utility model. However, the utility model can be implemented in many other ways different from the description, and those skilled in the art can make similar improvements without departing from the connotation of the utility model, so the utility model is not limited by the specific embodiments disclosed below.

[0024] Please combine Figures 1-5 The utility model discloses a CNC clamp for glass thin surface processing which can compensate product processing tolerance and clamp manufacturing tolerance, provide stable support for products, improve product processing quality and yield, which comprises a mounting base 100, a floating cylinder 200, a fixed base 300 and a floating adjusting assembly 400. The side surface of the mounting base 100 is provided with a gas pipe interface 110 for communicating with external vacuum equipment. A vacuum air duct is arranged in the mounting base 100, which penetrates the side surface of the mounting base 100 and communicates with the gas pipe interface 110. The vacuum air duct penetrates the upper surface of the mounting base 100 and forms an air vent 120. An installation groove 130 is formed on the side of the upper surface of the mounting base 100 beside the air vent 120, which is used to provide an installation position of the floating cylinder 200. The floating cylinder 200 is embedded in the installation groove 130 and fixedly connected with the mounting base 100. The air inlet end of the floating cylinder 200 communicates with external air pressure equipment, and the telescopic end of the floating cylinder 200 extends out of the installation groove 130. The fixed base 300 is fixed on the upper surface of the mounting base 100 and sealingly cooperates with the mounting base 100. The upper surface of the fixed base 300 is provided with a plurality of adsorption holes 310 which communicate with the air vent 120 and a non-circular guide hole 320 corresponding to the telescopic end of the floating cylinder 200. The side surface of the fixed base 300 is provided with a through hole 330 which communicates with the non-circular guide hole 320. Preferably, the cross section of the non-circular guide hole 320 is in strip structure or waist structure. The floating adjusting assembly 400 comprises a floating connecting plate 410 which is embedded in the non-circular guide hole 320 and sleeved and fixed on the telescopic end of the floating cylinder 200, a vacuum suction head 420 which is fixed on the upper surface of the floating connecting plate 410, and a vacuum air nozzle 430 which penetrates the through hole 330 and is fixedly connected with the vacuum suction head 420. The vacuum suction head 420 is fixed on the floating connecting plate 410 by screws. The ring side surface shape of the vacuum suction head 420 and the ring side surface shape of the floating connecting plate 410 are adapted to the inner contour shape of the non-circular guide hole 320. The circumferential limiting of the vacuum suction head 420 and the floating connecting plate 410 is realized by the abutment of the vacuum suction head 420 and the inner wall of the non-circular guide hole 320 and the abutment of the floating connecting plate 410 and the inner wall of the non-circular guide hole 320, so as to prevent the rotation of the vacuum suction head 420 and the floating connecting plate 410 in the non-circular guide hole 320. The upper surface of the vacuum suction head 420 is provided with a suction groove 421. The vacuum air nozzle 430 communicates with the suction groove 421 and external vacuum equipment. The upper surface of the fixed base 300 and the upper surface of the vacuum suction head 420 jointly form a product mounting surface.

[0025] In this embodiment, the upper surface of the fixed base 300 is used to provide a first support surface for the product, and the upper surface of the vacuum chuck 420 is used to provide a second support surface for the product. When the product is clamped, the first support surface receives and corresponds to the main body portion of the product, and the second support surface receives and corresponds to the thin surface portion (the part to be machined on the product) on the product. In order to avoid the problem of breakage of the product due to insufficient support caused by the hollow area below the thin surface area during machining, the height of the upper surface of the vacuum chuck 420 is adjusted by the up-and-down floating of the floating cylinder 200, so that the upper surface of the vacuum chuck 420 can always fit the lower surface area of the thin surface of the product, thereby realizing stable support for the thin surface area of the product.

[0026] The CNC clamp for processing the thin surface of glass described above adjusts the height of the vacuum chuck 420 by setting the floating cylinder 200. When a gap is left between the upper surface of the fixed base 300 and the product due to the tolerance of the incoming product or the tolerance of the clamp manufacturing, the telescopic end of the floating cylinder 200 will automatically float up and lift the vacuum chuck 420. The product is adsorbed by the vacuum chuck 420 and the fixed base 300 lifted by the vacuum chuck 420, so that the lower surface of the product is flatly attached to the vacuum chuck 420 and the fixed base 300. The machining tolerance of the product and the manufacturing tolerance of the clamp are compensated, and stable support for the product is realized. Thus, the problem of machining vibration caused by a large area of vacancy below the machined surface of the product is avoided, and the problem of vibration deformation of the product caused by cutting pressure is avoided, so as to improve the machining quality and yield of the product surface.

[0027] The mounting base 100 is used to support the other components and as a gas path connector of the fixed base 300. Specifically, in this embodiment, the mounting base 100 is made of aluminum alloy material, which can reduce the weight of the mounting base 100 and even the entire CNC clamp, thereby reducing the difficulty of moving the CNC clamp while ensuring the mechanical strength of the entire mounting base 100. The lower part of the two opposite sides of the mounting base 100 is protruded away from the center of the mounting base 100 to form two oppositely arranged mounting tables 101. The edges of the two mounting tables 101 are respectively provided with mounting notches 102. When the CNC clamp is installed, only the screws passing through the mounting notches 102 are needed to fix the CNC clamp on the CNC machine table.

[0028] In an embodiment, the upper surface of the mounting base 100 is provided with a groove 140, the length of the groove 140 is equal to the length of the bottom of the fixing base 300, the width of the groove 140 is equal to the width of the bottom of the fixing base 300, the fixing base 300 is arranged in the groove 140 and is screw-connected with the mounting base 100, and the mounting groove 130 and the air vent 120 are arranged on the groove bottom surface of the groove 140. Preferably, the lower part of the fixing base 300 is provided with a boss 301 on each of the two opposite side edges, each boss 301 is provided with a row of connecting holes 302, the groove 140 is provided with two rows of mounting holes 141 corresponding to the two rows of connecting holes 302, and the fixing base 300 is fixedly connected with the mounting base 100 by screws corresponding to the connecting holes 302 and the mounting holes 141. In this embodiment, by arranging the groove 140 on the upper surface of the mounting base 100, the predetermined positioning of the fixing base 300 is realized, so that the hole positions on the fixing base 300 can be quickly aligned with the corresponding hole positions on the mounting base 100, thereby reducing the installation difficulty of the fixing base 300. Further, in this embodiment, a plurality of positioning pins 150 are arranged and fixed on the groove bottom surface of the groove 140 at intervals, and the lower surface of the fixing base 300 is provided with a plurality of positioning holes corresponding to the positioning pins 150. In this embodiment, the groove bottom surface of the groove 140 is provided with a slot, the slot width or inner diameter is equal to the width or inner diameter of the positioning pin 150, and the positioning pin 150 is inserted into the slot to realize the installation of the positioning pin 150 on the mounting base 100. Preferably, the plurality of positioning pins 150 are arranged on the groove bottom surface of the groove 140 in an asymmetric manner, so that by arranging the positioning pins 150, the foolproofness of the fixing base 300 during installation on the mounting base 100 can be realized, thereby improving the assembly efficiency of the fixing base 300 and the mounting base 100.

[0029] In order to realize the sealing cooperation of the fixing base 300 and the mounting base 100, in this embodiment, the upper surface of the mounting base 100 and the lower surface of the fixing base 300 are coated with sealing glue, so as to avoid air leakage at the air vent 120, thereby ensuring the stability of the air pressure at the upper surface of the fixing base 300. In another embodiment, the groove bottom surface of the groove 140 is provided with a sealing groove surrounding the air vent 120, and a sealing ring is embedded in the sealing groove. After the fixing base 300 is fixedly connected with the mounting base 100, the sealing ring is tightly abutted with the lower surface of the fixing base 300, so as to realize the sealing cooperation of the fixing base 300 and the mounting base 100.

[0030] In one embodiment, the upper surface of the mounting base 100 is further provided with an avoiding slot 142 which is located at the edge of the recess 140 and penetrates the bottom surface of the recess 140. In other words, the avoiding slot 142 is projected from the bottom surface of the recess 140, and a part of the projection is located in the recess 140, and the other part is located outside the recess 140. In this way, when the screw connecting the fixing base 300 and the mounting base 100 is loosened, the operator can put his finger or a tool into the avoiding slot 142 from the edge of the recess 140, and lift the bottom edge of the fixing base 300, so as to remove the fixing base 300 from the mounting base 100.

[0031] In order to reduce the installation difficulty of the floating cylinder 200, in one embodiment, the mounting groove 130 penetrates the side surface of the mounting base 100 and forms a through gap 131, and the air inlet end of the floating cylinder 200 penetrates the through gap 131 and communicates with the external air pressure device. Further, the mounting groove 130 penetrates the lower surface of the mounting base 100 and forms a mounting opening 132 on the lower surface of the mounting base 100, and the edge of the mounting groove 130 is protruded towards the middle part of the mounting groove 130 to form a limiting baffle, and the floating cylinder 200 is screw-connected with the limiting baffle. Preferably, the upper surface of the mounting base 100 is provided with a plurality of counterbores at the area corresponding to the limiting baffle. When the floating cylinder 200 is installed, only need to push the floating cylinder 200 into the mounting groove 130 from below the mounting base 100 through the mounting opening 132, and make the telescopic end of the floating cylinder 200 penetrate out of the slot of the mounting groove 130, and then fix the floating cylinder 200 on the mounting base 100 by screwing the screw through the counterbores and inserting into the shell of the floating cylinder 200.

[0032] The floating cylinder 200 is a cylinder provided with a floating mechanism inside. By setting the floating mechanism, the piston rod (the telescopic end of the floating cylinder 200) of the floating cylinder 200 can freely float within a certain range, so that the piston rod can adjust the position within a certain range, so as to adapt to different loads and working conditions. The floating cylinder 200 used in the present embodiment can be any floating cylinder 200 on the market which can realize the free floating of the piston rod along the longitudinal direction by force limiting mode. For example, the floating cylinder 200 which is provided with elastic elements or controls the movement range and floating characteristics of the piston rod by air pressure adjustment can be selected, and details are not described here.

[0033] In an embodiment, the lower surface of the floating connecting plate 410 is provided with a limiting groove 411, and the floating adjusting assembly 400 further comprises a linear bearing 440 fixed in the limiting groove 411, a dirt-proof mounting sheet 450 fixed at the bottom end of the linear bearing 440, and a deflection-preventing pin 460 fixed on the upper surface of the mounting base 100, the deflection-preventing pin 460 penetrating the dirt-proof mounting sheet 450 and being inserted into the linear bearing 440, and the deflection-preventing pin 460 being in sliding fit with the linear bearing 440. In the embodiment, the linear bearing 440 is filled with lubricating grease, and the linear bearing 440 and the deflection-preventing pin 460 are arranged to limit the lifting path of the floating connecting plate 410 and the vacuum suction head 420, so as to prevent the floating connecting plate 410 and the vacuum suction head 420 from shaking during lifting. Meanwhile, the linear bearing 440 is arranged to reduce the resistance during lifting of the floating connecting plate 410 and the vacuum suction head 420. The dirt-proof mounting sheet 450 is arranged to separate the inside of the linear bearing 440 from the lower part of the linear bearing 440, and to limit the lubricating grease in the linear bearing 440, so as to prevent the lubricating grease from flowing down along the deflection-preventing pin 460. In the embodiment, the dirt-proof mounting sheet 450 is fixed on the edge of the limiting groove 411 by screws. In addition, the deflection-preventing pin 460 is eccentrically arranged on the floating connecting plate 410. Since the floating cylinder 200 can rotate around its axis, and the vacuum suction head 420 is not allowed to have large deflection, in the embodiment, the outer contour shape of the vacuum suction head 420 and the floating connecting plate 410 is adapted to the inner contour shape of the non-circular guide hole 320 to limit the rotation of the vacuum suction head 420 and the floating connecting plate 410, and the deflection-preventing pin 460 is arranged eccentrically, so as to further prevent the vacuum suction head 420 from rotating around the axis of the piston rod of the floating cylinder 200, thereby improving the reliability of the limiting of the vacuum suction head 420.

[0034] Further, in an embodiment, the floating adjusting assembly 400 further comprises a dirt-proof washer 470, one side of the dirt-proof mounting sheet 450 adjacent to the linear bearing 440 is provided with a clamping groove 451, the dirt-proof washer 470 is sleeved on the deflection-preventing pin 460 and embedded in the clamping groove 451, and the dirt-proof washer 470 abuts against the groove bottom surface of the clamping groove 451 and the bottom of the linear bearing 440, respectively, and the clamping groove 451 is arranged to limit the dirt-proof washer 470. Preferably, the dirt-proof washer 470 is in transition fit with the deflection-preventing pin 460, so as to prevent dirt from entering the linear bearing 440. In addition, in the embodiment, the upper surface of the mounting base 100 is provided with a threaded hole, the lower part of the deflection-preventing pin 460 is provided with a positioning ring 461, the lower part of the positioning ring 461 is provided with a screw rod which is rotatably inserted into the threaded hole and in threaded fit with the threaded hole, the diameter of the positioning ring 461 or the minimum width on the positioning ring 461 is greater than the inner diameter of the threaded hole, and the positioning ring 461 is arranged to limit the maximum depth of the deflection-preventing pin 460 inserted into the threaded hole, so as to avoid damage to the threads on the screw rod caused by continuous rotation of the deflection-preventing pin 460, thereby prolonging the service life of the deflection-preventing pin 460.

[0035] In the assembly process of the above CNC clamp, first, the installation base 100 is taken, the air inlet end of the floating air cylinder 200 is connected with the air nozzle, the floating air cylinder 200 is fixed on the installation base 100 through screws, and the positioning pin 150 is inserted into the upper surface of the installation base 100, so as to prepare for subsequent installation. Then, the vacuum suction head 420, the vacuum nozzle 430, the floating connecting plate 410, the linear bearing 440, the anti-fouling washer 470, and the anti-fouling mounting piece 450 are taken, and the components are assembled in sequence. After assembly, the anti-fouling washer 470 is in transition fit with the anti-deflection pin 460, the linear bearing 440 is in sliding fit with the anti-deflection pin 460, lubricating grease is injected into the linear bearing 440, the vacuum suction head 420 is fixedly connected with the floating connecting plate 410 through screws, and finally the fixed base 300 is sleeved to complete the assembly.

[0036] The technical features of the above-described embodiments can be combined in any manner. To make the description concise, all possible combinations of the technical features in the above-described embodiments are not described, but as long as the combinations of the technical features do not exist, they should be considered as within the scope of the present disclosure.

[0037] The above-described embodiments only express several implementation manners of the present application, and the description is relatively specific and detailed, but it should not be understood as a limitation on the scope of the present application. It should be pointed out that for ordinary skilled persons in the art, some modifications and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the appended claims.

Claims

1. A CNC fixture for processing thin glass surfaces, characterized in that, include: The mounting base has an air pipe interface on its side for connecting with an external vacuum device. The mounting base has a vacuum channel inside, which passes through the side of the mounting base and connects with the air pipe interface. The vacuum channel passes through the upper surface of the mounting base and forms a vent. The upper surface of the mounting base has a mounting groove next to the vent. A floating cylinder is embedded in a mounting groove and fixedly connected to a mounting base. The air inlet of the floating cylinder is connected to an external air pressure device, and the telescopic end of the floating cylinder extends out of the mounting groove. A fixed base is fixed to the upper surface of the mounting base and seals with it. The upper surface of the fixed base has several suction holes communicating with the vent and non-circular guide holes corresponding to the telescopic ends of the floating cylinder. The side of the fixed base has through holes communicating with the non-circular guide holes. A floating adjustment assembly includes a floating connecting plate embedded in a non-circular guide hole and sleeved and fixed to the telescopic end of a floating cylinder, a vacuum nozzle fixed to the upper surface of the floating connecting plate, and a vacuum nozzle passing through the through hole and fixedly connected to the vacuum nozzle. The circumferential side shape of the vacuum nozzle and the circumferential side shape of the floating connecting plate are adapted to the inner contour shape of the non-circular guide hole. An air suction groove is formed on the upper surface of the vacuum nozzle. The vacuum nozzle communicates with the air suction groove and an external vacuum device. The upper surface of the fixed base and the upper surface of the vacuum nozzle together form the product mounting surface.

2. The CNC fixture according to claim 1, characterized in that, The lower surface of the floating connecting plate is provided with a limiting groove. The floating adjustment assembly also includes a linear bearing fixed in the limiting groove, an anti-fouling mounting plate fixed at the bottom of the linear bearing, and an anti-deflection pin fixed on the upper surface of the mounting base. The anti-deflection pin passes through the anti-fouling mounting plate and is inserted into the linear bearing. The anti-deflection pin slides in conjunction with the linear bearing.

3. The CNC fixture according to claim 2, characterized in that, The floating adjustment assembly also includes an anti-fouling washer. A groove is provided on the side of the anti-fouling mounting plate adjacent to the linear bearing. The anti-fouling washer is sleeved on the anti-deflection pin and embedded in the groove. The anti-fouling washer abuts against the bottom surface of the groove and the bottom of the linear bearing.

4. The CNC fixture according to claim 2, characterized in that, The upper surface of the mounting base is provided with a threaded hole, the lower part of the anti-deflection pin is provided with a positioning ring, and the lower part of the positioning ring is provided with a screw that can be rotated and inserted into the threaded hole and threadedly engaged with the threaded hole. The diameter of the positioning ring or the minimum width on the positioning ring is greater than the inner diameter of the threaded hole.

5. The CNC fixture according to claim 1, characterized in that, The upper surface of the mounting base has a groove, the fixed base is located in the groove and connected to the mounting base with screws, and the mounting groove and the vent are both located on the bottom surface of the groove.

6. The CNC fixture according to claim 5, characterized in that, The groove bottom surface is provided with a plurality of positioning pins arranged at intervals and fixedly installed, and the lower surface of the fixed base is provided with a plurality of positioning holes corresponding to each positioning pin.

7. The CNC fixture according to claim 5, characterized in that, The upper surface of the mounting base also has a clearance groove located at the edge of the groove and extending through the bottom of the groove.

8. The CNC fixture according to claim 1, characterized in that, The mounting groove extends through the side of the mounting base and forms a through-hole. The air inlet end of the floating cylinder passes through the through-hole and is connected to an external air pressure device.

9. The CNC fixture according to claim 1, characterized in that, The mounting groove penetrates the lower surface of the mounting base and forms a mounting opening on the lower surface of the mounting base. The edge of the mounting groove protrudes towards the center of the mounting groove to form a limiting baffle. The floating cylinder is connected to the limiting baffle with screws.

Images