Workbench with protective structure

Abstract

The utility model relates to the technical field of workbenches, and discloses a workbench with a protective structure, which comprises a machine body, a workbench, a machine door and a milling cutter seat, an air cylinder is fixedly connected in the machine body, a positioning part for preventing a workpiece from shifting is arranged in the machine body, and the positioning part comprises a connecting column. When a rotating plate rotates, an abutting groove can abut against an abutting block, due to the fact that a sliding block is limited by a sliding groove and a positioning rod, when the abutting block is abutted, the sliding block can slide along the positioning rod and the sliding groove, a telescopic spring is compressed, and the sliding block can drive the positioning block to clamp a workpiece through a connecting rod; the clamping force of the top end and the bottom end of the workpiece can be kept consistent through the symmetrically-arranged positioning parts, the clamping positions are kept aligned, and the situation that during symmetrical boring and milling, due to the fact that the fixing force of the workpiece is different, the workpiece deviates, and left-right symmetrical boring and milling are not accurate enough is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of workbenches, in particular to a workbench with a protective structure. Background Art

[0002] Double-sided boring and milling machining center is a machine tool equipment that can perform boring and milling on both sides of the workpiece at the same time. It is efficient, precise and flexible, and is widely used in the fields of automobile, aerospace, mold manufacturing, machinery manufacturing, etc. Double-sided boring and milling machining center usually consists of two workbenches, two spindles and a tool magazine. During the working process, the two workbenches can perform boring and milling operations at the same time, which greatly improves the processing efficiency. At the same time, the two spindles can clamp different tools respectively to complete different processing tasks. The tool magazine stores tools of various specifications and types, and tool change operations can be performed as needed to achieve processing with various process requirements.

[0003] However, the existing double-sided boring and milling machining centers still use fixtures to position the workpiece. Since the double-sided boring and milling machining centers turn and mill the workpiece on both sides, the clamping position of the workpiece will be lower. However, if the workpiece is fixed in this way, the vibration of the milling cutter may cause vibration on the top of the workpiece during symmetrical boring and milling, causing the workpiece to shift, thereby making the symmetrical milling and turning of the milling cutter less precise and symmetrical. Utility Model Content

[0004] The purpose of the utility model is to provide a workbench with a protective structure to solve the problems raised in the above background technology.

[0005] To achieve the above object, the utility model provides the following technical solution: a workbench with a protective structure, comprising a machine body, a workbench, a machine door and a milling cutter seat, wherein a cylinder is fixedly connected to the interior of the machine body, and a positioning part for preventing the workpiece from shifting is arranged inside the machine body, and the positioning part comprises:

[0006] A connecting column, wherein the bottom surface of the connecting column is fixedly connected to the top surface of the workbench, the top surface of the connecting column is fixedly connected to a fixing plate, the top surface of the fixing plate is provided with a limiting groove, the inner side of the limiting groove is slidably connected to a limiting block, the top surface of the limiting block is fixedly connected to a rotating plate, and the surface of the rotating plate is provided with a conflicting groove;

[0007] A circular plate, the bottom surface of which is in contact with the top surface of the rotating plate, a sliding groove is provided on the surface of the rotating plate, a positioning rod is fixedly connected to the inner side of the sliding groove, a sliding block is penetrated and slidably connected to the positioning rod, and a telescopic spring is fixedly connected between the sliding block and the sliding groove;

[0008] The top surface of the resistance block is fixedly connected to the bottom surface of the slider, the top surface of the slider is fixedly connected to a connecting rod, and the top surface of the connecting rod is fixedly connected to a positioning block. The slider will drive the positioning block to clamp the workpiece through the connecting rod, and the symmetrically arranged positioning parts can make the clamping force of the top and bottom ends of the workpiece consistent.

[0009] Preferably, a return spring is fixedly connected to the top surface of the circular plate, and the placement plate is subjected to a relative thrust, further gradually shortening the distance between the placement plate and the circular plate. The end of the return spring away from the circular plate is fixedly connected to the placement plate.

[0010] Preferably, a groove is provided on the top surface of the fixed plate, and a triangular block is fixedly connected to the inner side of the groove. During the engagement of the trapezoidal block and the triangular block, the inclined surface of the trapezoidal block will contact the inclined surface of the triangular block, thereby causing the triangular block to drive the rotating plate to rotate.

[0011] Preferably, the bottom surface of the placement plate is fixedly connected with trapezoidal blocks, the number of the trapezoidal blocks is six groups, and the trapezoidal blocks are embedded with the triangular blocks. When the placement plate gradually moves toward the fixed plate, the placement plate will drive the trapezoidal blocks to gradually embed with the triangular blocks.

[0012] Preferably, a slide groove is provided on the surface of the placement plate, and the connecting rod passes through the slide groove provided on the surface of the placement plate.

[0013] Preferably, the shape of the interference groove is arc-shaped, and the interference block passes through the interference groove. When the rotating plate rotates, the interference groove will interfere with the interference block, and the sliding block will slide along the positioning rod and the sliding groove.

[0014] Preferably, there are two groups of positioning parts, and the bottom surface of the connecting column in one group of positioning parts is fixedly connected to the top surface of the workbench, and the connecting column in the other group of positioning parts is fixedly connected to the output shaft of the cylinder, and the two groups of positioning parts are symmetrically arranged. The cylinder is started to push the upper positioning part downward, and when the upper placement plate moves a certain distance, it will conflict with the top surface of the workpiece, so that the placement plate is subjected to relative thrust.

[0015] Compared with the prior art, the utility model provides a workbench with a protective structure, which has the following beneficial effects:

[0016] 1. The workbench with a protective structure will cause the interference groove to interfere with the interference block when the rotating plate rotates. Since the slider is limited by the slide groove and the positioning rod, when the interference block is interfered, the slider will slide along the positioning rod and the slide groove, and the telescopic spring will be compressed, and the slider will drive the positioning block to clamp the workpiece through the connecting rod. The symmetrically arranged positioning parts can keep the clamping force of the top and bottom ends of the workpiece consistent, and the clamping positions can be kept aligned, so as to prevent the workpiece from being offset due to different fixing forces during symmetrical boring and milling, resulting in inaccurate left-right symmetrical boring and milling.

[0017] 2. The workbench with a protective structure can also position some columnar workpieces through the positioning blocks of the circular array when positioning the workpiece in the positioning part, and keep the upper and lower axes of the columnar workpieces perpendicular to the workbench, so that the columnar workpieces are more stable and accurate during symmetrical boring and milling. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the front view structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the positioning part structure of the utility model;

[0020] Figure 3 This is a schematic diagram of the top view of the positioning part of the utility model;

[0021] Figure 4 This is a bottom view of the positioning part of the utility model;

[0022] Figure 5 It is a partial enlarged structural diagram of the positioning part of the utility model.

[0023] In the figure: 1. machine body; 2. positioning part; 21. connecting column; 22. fixing plate; 23. groove; 24. triangular block; 25. limiting groove; 26. limiting block; 27. rotating plate; 28. interference groove; 29. ​​round plate; 210. telescopic spring; 211. slide groove; 212. positioning rod; 213. slider; 214. interference block; 215. connecting rod; 216. positioning block; 217. reset spring; 218. placement plate; 219. trapezoidal block; 3. machine door; 4. milling cutter seat; 5. cylinder; 6. workbench. DETAILED DESCRIPTION

[0024] like Figure 1-Figure 5As shown, the utility model provides a technical solution: a workbench with a protective structure, including a body 1, a workbench 6, a machine door 3 and a milling cutter seat 4, the inside of the body 1 is fixedly connected with a cylinder 5, the inside of the body 1 is provided with a positioning part 2 for preventing the workpiece from shifting, and the positioning part 2 includes: a connecting column 21, a fixing plate 22, a groove 23, a triangular block 24, a limiting groove 25, a limiting block 26, a rotating plate 27, an abutment groove 28, a circular plate 29, a telescopic spring 210, a slide groove 211, a positioning rod 212, a slider 213, an abutment block 214, a connecting rod 215, a positioning block 216, a reset spring 217, a placement plate 218, and a trapezoidal block 219.

[0025] The bottom surface of the connecting column 21 is fixedly connected to the top surface of the workbench 6, and the top surface of the connecting column 21 is fixedly connected to a fixing plate 22, and a limiting groove 25 is provided on the top surface of the fixing plate 22, and a limiting block 26 is slidably connected to the inner side of the limiting groove 25, and a rotating plate 27 is fixedly connected to the top surface of the limiting block 26, and a resisting groove 28 is provided on the surface of the rotating plate 27, and the bottom surface of the circular plate 29 is fitted with the top surface of the rotating plate 27, and a sliding groove 211 is provided on the surface of the rotating plate 27, and a positioning rod 212 is fixedly connected to the inner side of the sliding groove 211, and the positioning rod 212 penetrates and slides The slider 213 is connected to the slide 213, and a telescopic spring 210 is fixedly connected between the slider 213 and the slide slot 211. The top surface of the abutment block 214 is fixedly connected to the bottom surface of the slider 213. The top surface of the slider 213 is fixedly connected to a connecting rod 215, and the top surface of the connecting rod 215 is fixedly connected to a positioning block 216. The slider 213 drives the positioning block 216 to clamp the workpiece through the connecting rod 215. The symmetrically arranged positioning part 2 can keep the clamping force of the top and bottom ends of the workpiece consistent, and the clamping position is aligned. The top surface of the circular plate 29 is fixedly connected to a reset spring 217, and the placement plate 218 is subjected to a relative thrust, which further shortens the distance between the placement plate 218 and the circular plate 29. At the same time, the reset spring 217 is compressed, and the end of the reset spring 217 away from the circular plate 29 is fixedly connected to the placement plate 218. The top surface of the fixed plate 22 is provided with a groove 23, and the inner side of the groove 23 is fixedly connected with a triangular block 24. When the trapezoidal block 219 and the triangular block 24 are engaged, the inclined surface of the trapezoidal block 219 will contact the inclined surface of the triangular block 24, so that the triangular block 24 drives the rotating plate 27 to rotate. The bottom surface of the placement plate 218 is fixedly connected with a trapezoidal block 219, and the number of the trapezoidal blocks 219 is six groups, and the trapezoidal blocks 219 and the triangular blocks 24 are engaged. When the placement plate 218 gradually moves toward the direction of the fixed plate 22, the placement plate 218 will drive the trapezoidal blocks 219 to gradually engage with the triangular block 24. The surface of the placement plate 218 is provided with a slide groove 211, and the connecting rod 215 passes through the slide groove 211 provided on the surface of the placement plate 218. The shape of the interference groove 28 is arc-shaped, and the interference block 214 passes through the interference groove 28. When the rotating plate 27 rotates, the interference groove 28 will interfere with the interference block 214. Since the slider 213 is limited by the slide groove 211 and the positioning rod 212, when the interference block 214 is interfered, the slider 213 will slide along the positioning rod 212 and the slide groove 211. There are two groups of positioning parts 2, and the bottom surface of the connecting column 21 in one group of positioning parts 2 is fixedly connected to the top surface of the workbench 6, and the connecting column 21 in the other group of positioning parts 2 is fixedly connected to the output shaft of the cylinder 5, and the two groups of positioning parts 2 are symmetrically arranged. When in use, open the machine door 3, place the workpiece to be milled on the top surface of the placement plate 218, and then start the cylinder 5, so that the cylinder 5 pushes the upper positioning part 2 to move downward, and when the upper placement plate 218 moves a certain distance, it will interfere with the top surface of the workpiece, so that the placement plate 218 is subjected to relative thrust.

[0026] Based on the above embodiment, when in use, the machine door 3 is opened, and the workpiece to be milled is placed on the top surface of the placement plate 218, and then the cylinder 5 is started, so that the cylinder 5 pushes the upper positioning part 2 to move downward. When the upper placement plate 218 moves a certain distance, it will contact with the top surface of the workpiece, so that the placement plate 218 is subjected to a relative thrust, and further the distance between the placement plate 218 and the circular plate 29 is gradually shortened. At the same time, the reset spring 217 is compressed, and when the placement plate 218 gradually moves toward the direction of the fixed plate 22, the placement plate 218 will drive the trapezoidal block 219 to gradually fit with the triangular block 24, and in the process of the trapezoidal block 219 fitting with the triangular block 24, the inclined surface of the trapezoidal block 219 will contact with the triangular block 24. The inclined surface of the triangular block 24 drives the rotating plate 27 to rotate. When the rotating plate 27 rotates, the abutment groove 28 abuts against the abutment block 214. Since the slider 213 is limited by the slide groove 211 and the positioning rod 212, when the abutment block 214 is abutted, the slider 213 slides along the positioning rod 212 and the slide groove 211, and the telescopic spring 210 is compressed, and the slider 213 drives the positioning block 216 to clamp the workpiece through the connecting rod 215. The symmetrically arranged positioning part 2 can make the clamping force of the top and bottom ends of the workpiece consistent, and the clamping positions are kept aligned, so as to prevent the workpiece from being offset due to different fixing forces during symmetrical boring and milling, resulting in inaccurate left-right symmetrical boring and milling.

[0027] When the positioning part 2 positions the workpiece, some columnar workpieces can also be positioned through the circular array of positioning blocks 216, and the upper and lower axes of the columnar workpieces are kept perpendicular to the worktable 6, making the columnar workpieces more stable and accurate during symmetrical boring and milling.

[0028] The above generally describes the present invention in detail, but it is obvious to a person skilled in the art that some modifications or improvements can be made to the present invention. Therefore, modifications or improvements that do not deviate from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. A workbench with a protective structure, comprising a machine body (1), a workbench (6), a machine door (3) and a milling cutter seat (4), characterized in that: The body (1) is fixedly connected to a cylinder (5), and the body (1) is provided with a positioning portion (2) for preventing the workpiece from shifting. The positioning portion (2) comprises: A connecting column (21), wherein the bottom surface of the connecting column (21) is fixedly connected to the top surface of the workbench (6), the top surface of the connecting column (21) is fixedly connected to a fixing plate (22), the top surface of the fixing plate (22) is provided with a limiting groove (25), the inner side of the limiting groove (25) is slidably connected to a limiting block (26), the top surface of the limiting block (26) is fixedly connected to a rotating plate (27), and the surface of the rotating plate (27) is provided with a resisting groove (28); A circular plate (29), wherein the bottom surface of the circular plate (29) is in contact with the top surface of the rotating plate (27), a sliding groove (211) is provided on the surface of the rotating plate (27), a positioning rod (212) is fixedly connected to the inner side of the sliding groove (211), a sliding block (213) is passed through and slidably connected to the positioning rod (212), and a telescopic spring (210) is fixedly connected between the sliding block (213) and the sliding groove (211); A resistance block (214), the top surface of the resistance block (214) is fixedly connected to the bottom surface of the slider (213), the top surface of the slider (213) is fixedly connected to a connecting rod (215), and the top surface of the connecting rod (215) is fixedly connected to a positioning block (216).

2. A workbench with a protective structure according to claim 1, characterized in that: A return spring (217) is fixedly connected to the top surface of the circular plate (29), and a placement plate (218) is fixedly connected to one end of the return spring (217) away from the circular plate (29).

3. A workbench with a protective structure according to claim 2, characterized in that: A groove (23) is provided on the top surface of the fixing plate (22), and a triangular block (24) is fixedly connected to the inner side of the groove (23).

4. A workbench with a protective structure according to claim 3, characterized in that: The bottom surface of the placement plate (218) is fixedly connected with a trapezoidal block (219), the number of the trapezoidal blocks (219) is six groups, and the trapezoidal blocks (219) are embedded with the triangular blocks (24).

5. The workbench with a protective structure according to claim 2, characterized in that: A sliding groove (211) is provided on the surface of the placement plate (218), and the connecting rod (215) passes through the sliding groove (211) provided on the surface of the placement plate (218).

6. The workbench with a protective structure according to claim 1, characterized in that: The shape of the interference groove (28) is arc-shaped, and the interference block (214) passes through the interference groove (28).

7. The workbench with a protective structure according to claim 1, characterized in that: The number of the positioning parts (2) is two groups, and the bottom surface of the connecting column (21) in one group of the positioning parts (2) is fixedly connected to the top surface of the workbench (6), and the connecting column (21) in the other group of the positioning parts (2) is fixedly connected to the output shaft of the cylinder (5), and the two groups of the positioning parts (2) are symmetrically arranged.

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