CNC numerical control machine tool with high workpiece positioning performance

Abstract

The utility model discloses a CNC (computer numerical control) machine tool with strong workpiece positioning performance, which comprises a base and a frame movably arranged on the base, a detachable workbench is arranged on the base, a connecting seat and a guide rail are arranged at the joint of the frame and the base, the frame is further provided with a pushing mechanism, a processing module and a transverse frame used for connecting the processing module, and the transverse frame is provided with a plurality of positioning holes. The rack moves in the Z-axis direction of the base through a pushing mechanism, and the workbench is provided with a plurality of clamping mechanisms, a longitudinal positioning adjusting mechanism and a transverse positioning adjusting mechanism. Clamping can be carried out according to the shape of a workpiece, flexibility is high, reliability is high, the transverse positioning adjusting mechanism and the longitudinal positioning adjusting mechanism are arranged on the workbench, the workbench is further connected with the clamping mechanism of the longitudinal positioning adjusting mechanism, multi-size positioning can be carried out through the structure, and the positioning function is powerful.

Description

Technical Field

[0001] The utility model relates to the technical field of numerical control machine tools, in particular to a CNC numerical control machine tool with strong workpiece positioning performance. Background Art

[0002] When machining workpieces on CNC machine tools, positioning structures are required to clamp and position the workpieces. A fixture, also known as a fixture, is a device used during the mechanical manufacturing process to secure the workpiece in the correct position for construction or inspection. A fixture typically consists of a positioning element (to determine the correct position of the workpiece in the fixture), a clamping device, a tool guide element (to determine the relative position of the tool and workpiece or guide the tool's direction), an indexing device (to enable the workpiece to be processed in multiple locations in a single installation, with rotary indexing devices and linear indexing devices being two types), connecting elements, and a fixture base (fixture base). Examples include welding fixtures, inspection fixtures, assembly fixtures, and machine tool fixtures, with machine tool fixtures being the most common and often referred to as fixtures. When machining a workpiece on a machine tool, the workpiece must be properly mounted (positioned) and clamped (clamped) before machining to ensure that the workpiece surface meets the technical requirements for dimensions, geometry, and relative positional accuracy with other surfaces specified in the drawings. However, currently in CNC machine tools, general fixtures can only position and clamp a single workpiece. After processing, the processed workpiece is removed and the new workpiece blank is repositioned, which makes it impossible to clamp efficiently. Quick-release fixtures can only clamp specific workpieces of a single shape and size. This type of fixture is not conducive to improving CNC production efficiency and also increases the labor intensity of operators. Utility Model Content

[0003] In order to overcome the deficiencies of the existing technical solutions, the utility model provides a CNC numerically controlled machine tool with strong workpiece positioning performance, which can effectively solve the problems raised by the background technology.

[0004] The technical solution adopted by the utility model to solve its technical problems is:

[0005] A CNC machine tool with strong workpiece positioning performance, comprising a base and a frame movably mounted on the base, the base being provided with a detachable workbench, the connection between the frame and the base being provided with a connecting seat and a guide rail, the frame further being provided with a pushing mechanism, a processing module and a cross frame for connecting the processing module, the frame being moved along the Z-axis direction of the base by the pushing mechanism, wherein the workbench is provided with a plurality of clamping mechanisms, a longitudinal positioning adjustment mechanism and a transverse positioning adjustment mechanism;

[0006] The clamping mechanism includes a group of workpiece clamps, guide seats and locking bolts, the workpiece clamps are connected to the guide seats, the workpiece clamps are connected to the longitudinal positioning adjustment mechanism, the longitudinal positioning adjustment mechanism is connected to the transverse positioning adjustment mechanism, the workpiece clamps are provided with a plurality of clamping parts for clamping the workpiece, the longitudinal positioning adjustment mechanism includes a first positioning controller and a first positioning rod, the transverse positioning adjustment mechanism includes a second positioning controller and a plurality of adjustment rails, the first positioning controller and the second positioning controller are respectively provided with a first positioning rod and a second positioning rod.

[0007] As a further description of the above technical solution, the frame is symmetrically arranged on the workbench, the connecting seat is fixedly connected to the frame, and the connecting seat is connected to the workbench through a guide rail, wherein the pushing mechanism is arranged above the frame, and the pushing mechanism includes a cylinder and a push rod.

[0008] As a further description of the above technical solution, the workbench is provided with a number of first positioning holes arranged in sequence, the first positioning holes are connected to the first positioning rod, the first positioning rod is made of iron, a first return spring is sleeved on the first positioning rod, and the first positioning rod is magnetically connected to the first positioning controller.

[0009] As a further description of the above technical solution, the longitudinal positioning adjustment mechanism includes four connecting rods, which are symmetrically arranged on the workbench, the connecting rods are connected to the guide seat, and the guide seat is slidingly connected to the adjustment rail, wherein the workpiece clamp and the guide seat are integrally formed, the second positioning controller is arranged in the guide seat, and a plurality of second positioning holes are provided on the adjustment rail, the second positioning holes are arranged along the length direction of the adjustment rail, and the second positioning rods are connected to the second positioning holes.

[0010] As a further description of the above technical solution, a driving structure connected to the guide seat is provided in the connecting rod, and the guide seat moves along the axial direction of the connecting rod through the driver, wherein the adjustment track is symmetrically arranged, and the connecting rod slides in conjunction with the adjustment track.

[0011] As a further description of the above technical solution, the second positioning rod is made of iron, a second return spring is sleeved on the second positioning rod, and the first positioning rod is magnetically connected to the first positioning controller.

[0012] As a further description of the above technical solution, a plurality of threaded holes are provided on the workpiece clamp, wherein the locking bolts are connected to the threaded holes, a clamping cavity is formed between the workpiece clamps, and the workpiece clamps are brought close to each other through the locking bolts.

[0013] As a further description of the above technical solution, the clamping portion includes a clamping block and a clamping groove, the clamping block and the workpiece clamping seat are integrally formed, and the clamping groove is semi-arc-shaped.

[0014] As a further description of the above technical solution, a translation mechanism is also provided at the connection between the frame and the cross frame. The translation mechanism includes a servo motor and a drive shaft. The drive shaft is provided with a bearing seat connected to the cross frame. The cross frame moves along the Z-axis direction of the base through the drive shaft.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] The CNC machine tool with strong workpiece positioning performance of the present invention has at least one of the following beneficial effects during use:

[0017] The frame moves along the front-to-back direction of the workbench through a pushing mechanism, wherein the pushing mechanism consists of a cylinder and a push rod. The cylinder is independently connected, and the push rod generates a pushing force for the frame through the cylinder. After the movement, the frame is offset from the base, wherein the workbench is exposed. This structure can facilitate the installation of the workpiece on the workpiece clamp, can facilitate the clamping of the workpiece, and can clamp according to the shape of the workpiece, with high flexibility and strong reliability. A lateral positioning adjustment mechanism and a longitudinal positioning adjustment mechanism are set on the workbench, and a clamping mechanism of the longitudinal positioning adjustment mechanism is also connected to the workbench. The number of connecting rods in the longitudinal positioning adjustment mechanism is 4, which is the same as the number of adjustment rails of the lateral positioning adjustment mechanism. The clamping mechanism includes two workpiece clamps in a group, and both workpiece clamps are provided with guide seats. This structure can perform multi-size positioning, and the positioning function is powerful. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall structure of a CNC machine tool with strong workpiece positioning performance in the utility model;

[0019] Figure 2 This is a schematic diagram of the first side structure of a CNC machine tool with strong workpiece positioning performance according to the present invention;

[0020] Figure 3 This is a schematic diagram of the second side structure of a CNC machine tool with strong workpiece positioning performance according to the present invention;

[0021] Figure 4 This is a schematic diagram of the workbench structure of a CNC machine tool with strong workpiece positioning performance in the utility model;

[0022] Figure 5 This is a partial perspective structural diagram of a CNC machine tool with strong workpiece positioning performance according to the present invention.

[0023] Numbers in the figure:

[0024] 1. Frame; 101. Pushing mechanism; 102. Cross frame; 103. Connecting seat; 104. Cylinder; 105. Push rod; 106. Processing module; 2. Base; 201. Workbench; 202. Translation mechanism; 203. Servo motor; 204. Drive shaft; 205. Guide rail; 206. First positioning hole; 3. Clamping mechanism; 301. Workpiece clamping seat; 302. Longitudinal positioning adjustment mechanism; 303. Lateral positioning adjustment mechanism; 304. Adjustment rail; 305. Second positioning hole; 306. Guide seat; 307. Drive structure; 308. First positioning controller; 309. First positioning rod; 310. Second positioning rod; 311. Second positioning controller; 312. Locking bolt; 313. Clamping part. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] like Figure 1-5 As shown, the utility model provides a CNC machine tool with strong workpiece positioning performance, including a base 2 and a frame 1 movably arranged on the base 2, the base 2 is provided with a detachable workbench 201, the connection between the frame 1 and the base 2 is provided with a connecting seat 103 and a guide rail 205, the frame 1 is further provided with a pushing mechanism 101, a processing module 106 and a cross frame 102 for connecting the processing module 106, the frame 1 is moved along the Z-axis direction of the base 2 by the pushing mechanism 101, wherein the workbench 201 is provided with multiple clamping mechanisms 3, a longitudinal positioning adjustment mechanism 302 and a transverse positioning adjustment mechanism 303.

[0027] In this embodiment, the base 2 and the frame 1 are connected through a guide rail 205. The frame 1 moves along the front and rear directions of the workbench 201 through a pushing mechanism 101. The pushing mechanism 101 is composed of a cylinder 104 and a push rod 105. The cylinder 104 is independently connected. The push rod 105 generates a pushing force for the frame 1 through the cylinder 104. After the movement, the frame 1 is misaligned with the base 2, wherein the workbench 201 is exposed. This structure can facilitate the installation of the workpiece on the workpiece clamp 301.

[0028] In this embodiment, a transverse positioning adjustment mechanism 303 and a longitudinal positioning adjustment mechanism 302 are provided on the workbench 201, and a clamping mechanism 3 of the longitudinal positioning adjustment mechanism 302 is also connected to the workbench 201. The number of connecting rods in the longitudinal positioning adjustment mechanism 302 is 4, which is the same as the number of adjustment rails 304 of the transverse positioning adjustment mechanism 303. The clamping mechanism 3 includes two workpiece clamps 301 in a group. Both workpiece clamps 301 are provided with guide seats 306. The guide seats 306 are equipped with a first positioning controller 308. The first positioning controller 308 has magnetic force through an electric coil structure and can attract the first positioning rod 309 by magnetic attraction. When the power is off, the first positioning rod 309 is connected to the first positioning hole 206 on the workbench 201. This structure can be used to position and fix the workpiece clamp 301. Similarly, the second positioning controller 311 provided near the adjustment rail 304 has the same principle as the first positioning controller 308.

[0029] In this embodiment, the second positioning rod 310 is used to position and secure the second positioning hole 305 on the adjustment rail 304 via the second positioning controller 311. The difference is that the first positioning controller 308 is used to position and secure the workpiece clamp 301, while the second positioning controller 311 is used to position and secure the connecting rod on the adjustment rail 304. This structure facilitates workpiece clamping and allows clamping according to the shape of the workpiece, providing high flexibility and reliability. The workpiece clamps 301 are locked together by a locking bolt 312, and the workpiece is placed in the corresponding clamping cavity.

[0030] The clamping mechanism 3 includes a group of workpiece clamps 301, guide seats 306 and locking bolts 312, the workpiece clamps 301 are connected to the guide seats 306, the workpiece clamps 301 are connected to the longitudinal positioning adjustment mechanism 302, the longitudinal positioning adjustment mechanism 302 is connected to the transverse positioning adjustment mechanism 303, the workpiece clamps 301 are provided with a plurality of clamping parts 313 for clamping the workpiece, the longitudinal positioning adjustment mechanism 302 includes a first positioning controller 308 and a first positioning rod 309, the transverse positioning adjustment mechanism 303 includes a second positioning controller 311 and a plurality of adjustment rails 304, the first positioning controller 308 and the second positioning controller 311 are respectively provided with a first positioning rod 309 and a second positioning rod 310.

[0031] It is further explained that the frame 1 is symmetrically arranged on the workbench 201, the connecting seat 103 is fixedly connected to the frame 1, and the connecting seat 103 is connected to the workbench 201 through a guide rail 205, wherein the pushing mechanism 101 is arranged above the frame 1, and the pushing mechanism 101 includes a cylinder 104 and a push rod 105.

[0032] Further explanation is that the workbench 201 is provided with a plurality of first positioning holes 206 arranged in sequence, the first positioning hole 206 is connected with the first positioning rod 309, the first positioning rod 309 is iron material, the first positioning rod 309 is provided with a first reset spring, the first positioning rod 309 is connected with the first positioning controller 308.

[0033] Further explanation is that the longitudinal positioning adjusting mechanism 302 includes four connecting rods, the connecting rods are symmetrically arranged on the workbench 201, the connecting rods are connected with the guide base 306, the guide base 306 is connected with the adjusting track 304, the workpiece clamping seat 301 is integrally formed with the guide base 306, the second positioning controller 311 is arranged in the guide base 306, the adjusting track 304 is provided with a plurality of second positioning holes 305, the second positioning hole 305 is arranged along the length direction of the adjusting track 304, the second positioning rod 310 is connected with the second positioning hole 305.

[0034] Further explanation is that the connecting rod is provided with a driving structure 307 connected with the guide base 306, the guide base 306 moves along the axial direction of the connecting rod through the driver, the adjusting track 304 is symmetrically arranged, the connecting rod is connected with the adjusting track 304 in sliding fit.

[0035] Further explanation is that the second positioning rod 310 is iron material, the second positioning rod 310 is provided with a second reset spring, the first positioning rod 309 is connected with the first positioning controller 308.

[0036] Further explanation is that a plurality of threaded holes are arranged on the workpiece clamping seat 301, the locking bolt 312 is connected with the threaded hole, the clamping cavity is formed between the workpiece clamping seat 301, and the workpiece clamping seat 301 is close to each other through the locking bolt 312.

[0037] Further explanation is that the clamping part 313 includes clamping block and clamping groove, the clamping block is integrally formed with the workpiece clamping seat 301, the clamping groove is semicircular.

[0038] Further explanation is that the connecting part of the rack 1 and the cross frame 102 is also provided with a translation mechanism 202, the translation mechanism 202 includes a servo motor 203 and a driving shaft 204, the driving shaft 204 is provided with a bearing seat connected with the cross frame 102, the cross frame 102 moves along the Z axis direction of the base 2 through the driving shaft 204.

[0039] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A CNC machine tool with strong workpiece positioning performance, characterized by: The machine comprises a base and a frame movably mounted on the base, wherein a detachable workbench is provided on the base, a connecting seat and a guide rail are provided at the connection between the frame and the base, the frame is further provided with a pushing mechanism, a processing module and a cross frame for connecting the processing module, the frame is moved along the Z-axis direction of the base by the pushing mechanism, wherein the workbench is provided with a plurality of clamping mechanisms, a longitudinal positioning adjustment mechanism and a transverse positioning adjustment mechanism; The clamping mechanism includes a group of workpiece clamps, guide seats and locking bolts, the workpiece clamps are connected to the guide seats, the workpiece clamps are connected to the longitudinal positioning adjustment mechanism, the longitudinal positioning adjustment mechanism is connected to the transverse positioning adjustment mechanism, the workpiece clamps are provided with a plurality of clamping parts for clamping the workpiece, the longitudinal positioning adjustment mechanism includes a first positioning controller and a first positioning rod, the transverse positioning adjustment mechanism includes a second positioning controller and a plurality of adjustment rails, the first positioning controller and the second positioning controller are respectively provided with a first positioning rod and a second positioning rod.

2. A CNC machine tool with strong workpiece positioning performance according to claim 1, characterized in that: The frame is symmetrically arranged on the workbench, the connecting seat is fixedly connected to the frame, and the connecting seat is connected to the workbench through a guide rail, wherein the pushing mechanism is arranged above the frame, and the pushing mechanism includes a cylinder and a push rod.

3. The CNC machine tool with strong workpiece positioning performance according to claim 1, characterized in that: The workbench is provided with a plurality of first positioning holes arranged in sequence, the first positioning holes are connected to a first positioning rod, the first positioning rod is made of iron, a first return spring is sleeved on the first positioning rod, and the first positioning rod is magnetically connected to a first positioning controller.

4. The CNC machine tool with strong workpiece positioning performance according to claim 1, characterized in that: The longitudinal positioning adjustment mechanism includes four connecting rods, which are symmetrically arranged on the workbench, the connecting rods are connected to the guide seat, and the guide seat is slidably connected to the adjustment rail, wherein the workpiece clamping seat and the guide seat are integrally formed, the second positioning controller is arranged in the guide seat, and a plurality of second positioning holes are provided on the adjustment rail, the second positioning holes are arranged along the length direction of the adjustment rail, and the second positioning rods are connected to the second positioning holes.

5. The CNC machine tool with strong workpiece positioning performance according to claim 4, characterized in that: A driving structure connected to the guide seat is provided in the connecting rod, and the guide seat moves along the axial direction of the connecting rod through the driver, wherein the adjustment rails are symmetrically arranged, and the connecting rod and the adjustment rails are slidably matched.

6. A CNC machine tool with strong workpiece positioning performance according to claim 1 or 3, characterized in that: The second positioning rod is made of iron, a second return spring is sleeved on the second positioning rod, and the first positioning rod is magnetically connected to the first positioning controller.

7. The CNC machine tool with strong workpiece positioning performance according to claim 1, characterized in that: A plurality of threaded holes are provided on the workpiece clamping seat, wherein the locking bolts are connected to the threaded holes, a clamping cavity is formed between the workpiece clamping seats, and the workpiece clamping seats are brought close to each other through the locking bolts.

8. The CNC machine tool with strong workpiece positioning performance according to claim 1, characterized in that: The clamping portion includes a clamping block and a clamping groove. The clamping block and the workpiece clamping seat are integrally formed, and the clamping groove is semi-arc-shaped.

9. The CNC machine tool with strong workpiece positioning performance according to claim 1, characterized in that: A translation mechanism is also provided at the connection between the frame and the cross frame. The translation mechanism includes a servo motor and a drive shaft. The drive shaft is provided with a bearing seat connected to the cross frame. The cross frame moves along the Z-axis direction of the base through the drive shaft.

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