Numerically controlled machine tool fixture

Abstract

The application discloses a numerical control machine tool clamp and relates to the technical field of numerical control machine tools, and solves the technical problem that the holding force of the existing numerical control machine tool clamp is difficult to control and that the workpiece is prone to deformation and damage during the clamping process; the numerical control machine tool clamp comprises a base, a portal frame installed on the top of the base and a hydraulic cylinder installed on the portal frame, the top of the base is symmetrically provided with clamping pieces, the clamping pieces comprise movable seats and clamping plates, the clamping plates are installed on the top of the movable seats close to one side, adjusting assemblies for controlling the movement of the movable seats are installed in the base, the output end of the hydraulic cylinder is connected with a cross beam, a T-shaped sliding groove is formed in the bottom of the cross beam, T-shaped sliding blocks are symmetrically and slidably arranged at the bottom of the T-shaped sliding groove, and sleeves are fixedly connected with the bottom of the T-shaped sliding blocks. The application not only facilitates multi-directional limiting of the workpiece and improves the stability of positioning, but also facilitates the control of the pressing force applied to the workpiece, and the workpiece can be prevented from being deformed and damaged due to excessive pressure.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of numerical control machine tools, and particularly relates to a numerical control machine tool clamp. BACKGROUND

[0002] A numerical control machine tool is an automatic machine tool equipped with a program control system. The control system can logically process programs with control codes or other symbolic instructions and translate them into code numbers, which are then input into the numerical control device through an information carrier. After operation and processing, the numerical control device sends various control signals to control the machine tool, automatically processing parts according to the required shape and size on the drawing.

[0003] One of the main functions of a numerical control lathe clamp is to clamp the workpiece being processed, ensuring the accurate positioning of the workpiece during processing, which is crucial for ensuring processing accuracy. Any slight positional deviation can lead to a decline in product quality. By ensuring stable clamping and precise positioning of the workpiece, the numerical control lathe clamp helps to reduce errors and vibrations during processing, thereby improving product quality, which is particularly important for enterprises producing high-precision parts.

[0004] In the prior art, when clamping a workpiece, the clamp jaw or clamp block of the clamp is usually used to fix the workpiece on the machine tool, and the clamping force is provided by the mechanical structure of the clamp. However, the clamping force of mechanical clamping is often large and difficult to control accurately, making it difficult to grasp the clamping force of the clamp on the workpiece. During the process of tight clamping, the workpiece is prone to deformation and damage, affecting the normal use of the workpiece. Therefore, a numerical control machine tool clamp is proposed to solve the above problems. SUMMARY

[0005] The present application relates to the technical field of numerical control machine tools, and particularly relates to a numerical control machine tool clamp.

[0006] The purpose of the present application can be achieved by the following technical solutions:

[0007] The utility model provides a numerical control machine tool clamp, including the base, gantry installed on the top of base and hydraulic cylinder installed on the gantry, the top of base is provided with the clamping piece symmetrically, the clamping piece includes movable seat and clamping plate, the clamping plate is installed on the top of movable seat near one side, be installed in the base for the adjusting assembly of control movable seat moves, the output of hydraulic cylinder is connected with crossbeam, the bottom of crossbeam is provided with T -shaped sliding slot, and the bottom of T -shaped sliding slot is symmetrically slidably provided with T -shaped sliding block, the bottom of T -shaped sliding block is fixedly connected with sleeve, the sleeve is slidably provided with movable block, the bottom of movable block is connected with the slide bar of through sleeve bottom, and the bottom of slide bar is connected with the pressing plate of sliding sleeve in clamping plate, the top of movable block is installed with spring, and the spring is installed with pressure sensing assembly between sleeve.

[0008] As a further scheme of the utility model: the pressure sensing assembly includes the pressure block of cross section T-shaped structure, the upper surface of sleeve interior is provided with recess for installing pressure block, and pressure sensor is installed between the groove bottom of pressure block and recess.

[0009] As a further scheme of the utility model: the pressure block is slidably penetrated with stand, the bottom of stand is connected with movable block through spring, the top of stand is sequentially slidably penetrated sleeve top and T-shaped sliding block and extends upwards, the top of T-shaped sliding block is installed with the shell cover of sleeveing on stand, the top of crossbeam is provided with the slide way of shell cover sliding, and slide way is communicated with T-shaped sliding slot, and the positioning assembly is installed between shell cover and stand.

[0010] As a further scheme of the utility model: the adjusting assembly includes the first lead screw of rotation installation in the base, the first lead screw is provided with two opposite directions threads, the bottom of movable seat is installed with moving block, the top of base is provided with the first through slot of moving block passing through, and the first lead screw is threadedly connected with moving block.

[0011] As a further scheme of the utility model: the positioning assembly includes the rack of inlay installation on one side of stand, the inner wall of one side of shell cover is provided with the movable slot corresponding with rack, the matching tooth block is slidably arranged in the movable slot, the screw rod is rotatably installed on the side of tooth block close to the movable slot bottom, the screw rod penetrates the movable slot bottom and extends outward, and the screw rod is threadedly connected with the movable slot bottom.

[0012] As a further scheme of the utility model: the pressure sensor is electrically connected with display through wire, and the display is inlayed and installed on the outer cylinder wall of sleeve.

[0013] As a further scheme of the present application: the movable seat is rotatably installed with a second screw rod, the second screw rod is provided with threads in two opposite directions, and the second screw rod is sleeved with two symmetrical side clamping blocks through the threads, the side wall of the movable seat is provided with a second through groove for the side clamping blocks to pass through, and the side clamping blocks are in sliding connection with the second through groove.

[0014] As a further scheme of the present application: the top end of the stand passes through the top of the portal frame, the top of the portal frame is provided with two symmetrical guide grooves, the stand passes through the guide grooves, and the stand is in sliding connection with the guide grooves.

[0015] The present application has the following beneficial effects:

[0016] 1. In the present application, the two clamping pieces are conveniently controlled to slide towards each other along the base by the adjusting assembly, so as to conveniently limit the workpiece placed on the base left and right, the second screw rod in the movable seat is conveniently controlled to move the two side clamping blocks towards each other, so as to conveniently limit the workpiece front and back, thereby conveniently achieving multi-directional limiting of the workpiece, so that the workpiece is not easy to displace, and the stability of positioning is improved.

[0017] 2. In the present application, the cross beam is conveniently driven to descend by the hydraulic cylinder, the sleeve is synchronously descended by the cross beam, the clamping plate is conveniently slid along the clamping plate until the top of the workpiece is in contact, the sleeve and the slide rod are relatively slid to make the spring continuously compressed as the cross beam continues to descend, the spring's reaction force is conveniently used to compress and position the workpiece by the clamping plate, the specific reaction force of the spring is conveniently known by cooperating with the pressure sensing assembly, so that the compression force of the clamping plate on the workpiece can be controlled according to needs, and deformation and damage of the workpiece caused by excessive pressure is avoided.

[0018] 3. In the present application, the position of the stand is conveniently locked according to needs by the positioning assembly, the stand and the slide rod are synchronously moved, so as to conveniently position the slide rod, so that the slide rod will not displace after the spring is compressed to an appropriate degree, not only effectively ensuring the stability of the compression force of the clamping plate, but also making the clamping plate not jump, which is conducive to further improving the clamping and limiting effect on the workpiece. BRIEF DESCRIPTION OF DRAWINGS

[0019] The present application will be further described below with reference to the drawings.

[0020] Figure 1 is a structural schematic view of a numerical control machine tool clamp of the present application;

[0021] Figure 2 is a structural schematic view of a clamping piece in a numerical control machine tool clamp of the present application;

[0022] Figure 3 is a side view structural schematic view of a sleeve and cross beam connecting part in a numerical control machine tool clamp of the present application;

[0023] Figure 4 is a structure diagram of the connecting part of the clamping piece and the base in the numerical control machine tool clamp of the present application;

[0024] Figure 5 is a structure diagram of the connecting part of the movable seat and the side clamping block in the numerical control machine tool clamp of the present application;

[0025] Figure 6 is Figure 3 is an enlarged view of part A in the figure.

[0026] In the figure: 1, base; 2, gantry; 3, hydraulic cylinder; 4, clamping piece; 401, movable seat; 402, clamping plate; 5, cross beam; 6, T-shaped sliding block; 7, sleeve; 8, movable block; 9, sliding rod; 10, pressing plate; 11, spring; 12, pressing block; 13, pressure sensor; 14, stand column; 15, shell; 16, slide; 17, first lead screw; 18, moving block; 19, first through slot; 20, rack; 21, movable groove; 22, tooth block; 23, screw; 24, display; 25, second lead screw; 26, side clamping block; 27, second through slot; 28, guide groove. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the present application.

[0028] Please refer to Figures 1-6 The present application is a numerical control machine tool clamp, as shown in the figure, which comprises a base 1, a gantry 2 installed on the top of the base 1, and a hydraulic cylinder 3 installed on the gantry 2. The top of the base 1 is symmetrically provided with a clamping piece 4, which facilitates the positioning and clamping of the workpiece. The clamping piece 4 comprises a movable seat 401 and a clamping plate 402. The clamping plate 402 is installed on the top of the movable seat 401 near one side. In order to facilitate the clamping of higher workpieces, in this embodiment, the side of the clamping plate 402 is flush with the side of the movable seat 401. An adjusting assembly for controlling the movement of the movable seat 401 is installed in the base 1.

[0029] The adjusting assembly comprises a first screw rod 17 rotatably arranged in the base 1, the first screw rod 17 is provided with threads in two opposite directions, the bottom of the movable seat 401 is provided with a moving block 18, the top of the base 1 is provided with a first through slot 19 for the moving block 18 to pass through, the first screw rod 17 is threadedly connected with the moving block 18, the first screw rod 17 is conveniently rotated to drive the moving block 18 to move the movable seat 401, and the two movable seats 401 facilitate the positioning of the left and right sides of the workpiece.

[0030] The second screw rod 25 is rotatably arranged in the movable seat 401, the second screw rod 25 is provided with threads in two opposite directions, and the second screw rod 25 is threadedly sleeved with two symmetrical side clamping blocks 26, the side wall of the movable seat 401 is provided with a second through slot 27 for the side clamping block 26 to pass through, and the side clamping block 26 is slidably connected with the second through slot 27, the second screw rod 25 is rotated to conveniently control the two side clamping blocks 26 to move towards or away from each other, so that the workpiece positioned on the left and right sides is conveniently positioned on the front and back sides, and the stability of the workpiece is further improved, so that the workpiece is not easy to displace, and the stability of positioning is improved.

[0031] The output end of the hydraulic cylinder 3 is connected with the cross beam 5, the hydraulic cylinder 3 is started to conveniently control the cross beam 5 to ascend and descend, the bottom of the cross beam 5 is provided with a T-shaped sliding groove, the bottom of the T-shaped sliding groove is symmetrically and slidably provided with a T-shaped sliding block 6, the bottom of the T-shaped sliding block 6 is fixedly connected with a sleeve 7, the sleeve 7 is slidably provided with a movable block 8, the bottom of the movable block 8 is connected with a sliding rod 9 penetrating through the bottom of the sleeve 7, and the bottom end of the sliding rod 9 is connected with a pressing plate 10 slidably sleeved on the clamping plate 402, so that the pressing plate 10 can slide downward along the clamping plate 402 after the cross beam 5 descends, the top of the movable block 8 is provided with a spring 11, and the reaction force generated by the compressed spring 11 can press and position the workpiece.

[0032] A pressure sensing assembly is arranged between the spring 11 and the sleeve 7, so as to conveniently master the specific reaction force of the compressed spring 11, the pressure sensing assembly comprises a pressure block 12 with a T-shaped cross section, a groove for arranging the pressure block 12 is arranged on the upper surface in the sleeve 7, and a pressure sensor 13 is arranged between the pressure block 12 and the groove bottom, the pressure sensor 13 is electrically connected with a display 24 through wires, so as to conveniently display the specific pressure value detected by the pressure sensor 13 on the display 24, and the display 24 is inlaidly arranged on the outer cylinder wall of the sleeve 7, so as to conveniently master the specific pressure value in real time, and avoid deformation and damage of the workpiece caused by excessive pressure.

[0033] The column 14 is slidably arranged on the pressing block 12, the bottom end of the column 14 is connected with the movable block 8 through the spring 11, the top end of the column 14 is sequentially slidably arranged through the top of the sleeve 7 and the T-shaped sliding block 6 and extends upward, the top end of the column 14 passes through the top of the portal frame 2, the top of the portal frame 2 is provided with two symmetrical guide grooves 28, the column 14 passes through the guide grooves 28 and is slidably connected with the guide grooves 28, so as to play a guiding role and improve the stability of the lifting of the cross beam 5, the top of the T-shaped sliding block 6 is provided with the shell sleeve 15 which is sleeved on the column 14, the top of the cross beam 5 is provided with the slide 16 for the shell sleeve 15 to slide, and the slide 16 is communicated with the T-shaped sliding groove.

[0034] The positioning assembly is arranged between the shell sleeve 15 and the column 14, so as to lock the position of the column 14, the positioning assembly comprises the rack 20 which is inlaidly arranged on one side of the column 14, the inner wall of one side of the shell sleeve 15 is provided with the movable groove 21 which corresponds to the rack 20, the matching tooth block 22 is slidably arranged in the movable groove 21, the screw rod 23 is rotatably arranged on the side of the tooth block 22 which is close to the groove bottom of the movable groove 21, the screw rod 23 passes through the groove bottom of the movable groove 21 and extends outward, and the screw rod 23 is threadedly connected with the groove bottom of the movable groove 21, rotating the screw rod 23 drives the tooth block 22 to slide along the movable groove 21, and locking the position of the column 14 by controlling the tooth block 22 to engage with the rack 20.

[0035] The working principle of the present application is as follows: the workpiece to be positioned is placed on the base 1, the first screw rod 17 is rotated to drive the two moving blocks 18 to move towards each other, and the two movable seats 401 are driven to move towards each other until the movable seats 401 are in close contact with the left and right sides of the workpiece, thereby completing the positioning in the left and right directions, then the second screw rod 25 is rotated to drive the two side clamping blocks 26 to slide towards each other along the second through slot 27 until the side clamping blocks 26 are in close contact with the front and rear sides of the workpiece, thereby completing the positioning in the front and rear directions, finally the hydraulic cylinder 3 is started to drive the cross beam 5 to move downward, at this time the pressing plate 10 will slide downward along the clamping plate 402, when the pressing plate 10 contacts the top of the workpiece, with the continuous downward movement of the cross beam 5, the sleeve 7 and the slide rod 9 will slide relative to each other and the spring 11 will be continuously compressed, the pressing plate 10 can be pressed and positioned on the top of the workpiece by using the reaction force of the spring 11, during the compression of the spring 11, the pressure sensor 13 can detect the specific reaction force of the compressed spring 11, and the specific pressure value can be displayed on the display 24, so that the pressing force on the workpiece can be easily controlled, and deformation and damage of the workpiece caused by excessive pressure can be avoided, when the pressing force of the pressing plate 10 on the workpiece is adjusted to an appropriate size, the screw rod 23 is rotated to drive the tooth block 22 to slide towards the slot opening of the movable slot 21 until the tooth block 22 is engaged with the rack 20 embedded on one side of the column 14, thereby preventing the column 14 from moving, which not only effectively ensures the stability of the pressing force of the pressing plate 10, but also prevents the pressing plate 10 from jumping, which is beneficial to further improve the clamping and positioning effect of the workpiece.

[0036] The above describes one embodiment of the present application in detail, but the above description is only a preferred embodiment of the present application and cannot be considered as limiting the scope of the present application. Any equivalent changes and improvements made according to the scope of the present application should still belong to the scope of the present application.

Claims

1. A CNC machine tool fixture, comprising a base (1), a gantry frame (2) mounted on top of the base (1), and a hydraulic cylinder (3) mounted on the gantry frame (2), characterized in that, The base (1) is symmetrically provided with clamping members (4) on its top. The clamping members (4) include a movable seat (401) and a clamping plate (402). The clamping plate (402) is installed on the top of the movable seat (401) near one side. An adjustment component for controlling the movement of the movable seat (401) is installed inside the base (1). The output end of the hydraulic cylinder (3) is connected to a crossbeam (5). A T-shaped groove is provided at the bottom of the crossbeam (5), and the bottom of the T-shaped groove is symmetrically slidably arranged. There is a T-shaped slider (6), and a sleeve (7) is fixedly connected to the bottom of the T-shaped slider (6). A movable block (8) is slidably arranged inside the sleeve (7). A sliding rod (9) passing through the bottom of the sleeve (7) is connected to the bottom of the movable block (8), and a pressure plate (10) that is slidably sleeved on the clamping plate (402) is connected to the bottom end of the sliding rod (9). A spring (11) is installed on the top of the movable block (8), and a pressure sensing component is installed between the spring (11) and the sleeve (7). The pressure sensing component includes a pressure block (12) with a T-shaped cross-section. The upper surface inside the sleeve (7) is provided with a groove for installing the pressure block (12), and a pressure sensor (13) is installed between the pressure block (12) and the bottom of the groove. A column (14) is slidably installed on the pressure block (12). The bottom end of the column (14) passes through the spring (11) and is connected to the movable block (8). The top end of the column (14) slides through the top of the sleeve (7) and the T-shaped slider (6) and extends upward. A shell sleeve (15) is installed on the top of the T-shaped slider (6) and sleeved on the column (14). A slide rail (16) is opened on the top of the crossbeam (5) for the shell sleeve (15) to slide. The slide rail (16) is connected to the T-shaped slide groove. A positioning component is installed between the shell sleeve (15) and the column (14). The pressure sensor (13) is electrically connected to a display (24) via a wire, and the display (24) is embedded in the outer wall of the sleeve (7).

2. A CNC machine tool fixture according to claim 1, characterized in that, The adjustment assembly includes a first lead screw (17) rotatably mounted in the base (1), the first lead screw (17) having two threads in opposite directions, a moving block (18) mounted on the bottom of the movable seat (401), and a first through slot (19) for the moving block (18) to pass through on the top of the base (1), the first lead screw (17) being threadedly connected to the moving block (18).

3. A CNC machine tool fixture according to claim 1, characterized in that, The positioning component includes a rack (20) embedded in one side of the column (14). A movable groove (21) corresponding to the rack (20) is provided on one side of the inner wall of the housing (15). A matching tooth block (22) is slidably arranged in the movable groove (21). A screw (23) is rotatably installed on the side of the tooth block (22) near the bottom of the movable groove (21). The screw (23) passes through the bottom of the movable groove (21) and extends outward. The screw (23) is threadedly connected to the bottom of the movable groove (21).

4. A CNC machine tool fixture according to claim 1, characterized in that, The movable seat (401) is rotatably installed with a second lead screw (25). The second lead screw (25) has two threads in opposite directions, and two symmetrical side clamps (26) are threaded onto the second lead screw (25). The side wall of the movable seat (401) is provided with a second through groove (27) for the side clamps (26) to pass through, and the side clamps (26) are slidably connected to the second through groove (27).

5. A CNC machine tool fixture according to claim 1, characterized in that, The top of the column (14) passes through the top of the gantry (2), and two symmetrical guide grooves (28) are opened through the top of the gantry (2). The column (14) passes through the guide grooves (28), and the column (14) and the guide grooves (28) are slidably connected.

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