Workpiece clamping structure for numerical control machine tool

Abstract

The workpiece clamping structure for the numerical control machine tool comprises a T-shaped base, a plurality of guide stand columns are detachably installed at the top end of the T-shaped base, guide adjusting rods are installed on the outer sides of the guide stand columns in a sliding mode, and a sliding adjusting rod is connected to one end of each guide adjusting rod in a sliding and inserted mode. And a center rod is fixed to the other end of the sliding adjusting rod, lifting supporting cushion blocks are movably installed at the upper end and the lower end of the center rod, two internal thread sleeves are installed in the center rod, and transmission gears are fixed to the outer surfaces of the two internal thread sleeves. The center rod, the lifting supporting cushion block and the guide stand column are connected through the guide adjusting rod and the sliding adjusting rod, so that parts needed for clamping a workpiece are integrated, a clamping tool does not need to be found when the workpiece is clamped, the use time needed in the workpiece clamping process is shortened, the preparation time for machining is shortened, and the machining efficiency is improved. The working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of workpiece clamping tools for numerically controlled machine tools, in particular to a workpiece clamping structure for numerically controlled machine tools. Background Art

[0002] CNC machine tool is the abbreviation of digital control machine tool. It is an automated machine tool equipped with a program control system. The control system can logically process programs specified by control codes or other symbolic instructions, decode them, and express them in coded numbers. The information is input into the CNC device through the information carrier. After calculation and processing, the CNC device sends various control signals to control the movement of the machine tool and automatically process the parts according to the shape and size required by the drawing.

[0003] CNC machine tools include tool magazines, spindles, processing tables, drive structures, cooling systems, etc. The processing table is used to place processed parts. In order to recover the coolant and fix the parts, there will be a coolant tank with a T-shaped cross-section on the processing table. After the workpiece is placed on the processing table of the CNC machine tool, clamping components are required to clamp and support the workpiece. The clamping components include T-shaped sliders, guide screws, fastening nuts, workpiece support blocks, pressure plates, pressure plate support blocks, etc. These supporting components are independent of each other.

[0004] However, there are many tools used to clamp workpieces on CNC machine tools, and multiple parts are required to clamp the workpiece. It takes time to find them when using them, and the operation time is long, resulting in reduced work efficiency. Therefore, it does not meet the existing needs. In this regard, we propose a workpiece clamping structure for CNC machine tools. Utility Model Content

[0005] The purpose of the utility model is to provide a workpiece clamping structure for a CNC machine tool, so as to solve the problems proposed in the above-mentioned background technology that there are many tools for clamping the workpiece on the CNC machine tool, multiple components are required to clamp the workpiece, time is spent on searching when using it, the operation time is long, resulting in reduced work efficiency, etc.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a workpiece clamping structure for a CNC machine tool, comprising a T-shaped base, a plurality of guide columns are detachably installed on the top of the T-shaped base, a guide adjusting rod is slidably installed on the outer side of the guide column, a sliding adjusting rod is slidably inserted at one end of the guide adjusting rod, and a center rod is fixed on the other end of the sliding adjusting rod, and a lifting support pad is movably installed on the upper and lower ends of the center rod, two internal threaded sleeves are installed inside the center rod, and transmission gears are fixed on the outer surfaces of the two internal threaded sleeves, and the two transmission gears are meshed with each other, and one side of one of the transmission gears is meshedly connected with an adjusting gear, a short shaft is fixed through the middle of the adjusting gear, and the end of the short shaft is rotatably connected to the center rod, an adjusting screw is inserted through the inside of the internal threaded sleeve, and one end of the adjusting screw is fixed to the lifting support pad.

[0007] Preferably, the outer surface of the adjusting screw and the inner surface of the internal threaded sleeve are provided with the same downward threads, and the adjusting screw and the internal threaded sleeve are transmitted by threads.

[0008] Preferably, the positions of the two adjusting screw rods are rotationally symmetrical, and the threads on the outer surfaces of the two adjusting screw rods are identical downwards.

[0009] Preferably, a threaded hole is provided at the top end of the guide column, and a parts pressing plate is installed above the guide column.

[0010] Preferably, a fastening screw is inserted through one end of the part pressing plate, and the bottom end of the fastening screw is screwed into the interior of the threaded hole through a thread, and a gasket is detachably placed between the part pressing plate and the guide column.

[0011] Preferably, rubber strips are provided on the upper and lower surfaces of the end portion of the sliding adjustment rod inserted into the guide adjustment rod, and the thickness of the rubber strips is greater than the spacing between the sliding adjustment rod and the guide adjustment rod.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. The utility model connects the central rod, the lifting support pad and the guide column through the guide adjustment rod and the sliding adjustment rod, so that the parts required for clamping the workpiece are integrated, and there is no need to find the clamping tool when clamping the workpiece, and the use required in the process of clamping the workpiece is shortened, the preparation time for processing is shortened, and the work efficiency is improved;

[0014] 2. The utility model rotates the adjusting gear, and when the adjusting gear rotates, it drives two transmission gears and an internal threaded sleeve to rotate. At this time, the ends of the center rods of the two adjusting screw rod layers extend out, and the adjusting screw rod drives the lifting support pads to move so that the two are respectively in contact with the workpiece and the CNC machine tool processing table to support the workpiece, thereby clamping workpieces of different shapes and thicknesses, and facilitating the CNC machine tool to process workpieces of different shapes. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the structure of the guide column of the utility model;

[0017] Figure 3 This is a structural cross-sectional view of the central rod of the utility model;

[0018] Figure 4 It is a partial structural sectional view of the guide adjustment rod of the utility model.

[0019] In the figure: 1. T-type base; 2. Guide column; 3. Guide adjustment rod; 4. Sliding adjustment rod; 5. Center rod; 6. Lifting support pad; 7. Part pressure plate; 8. Fastening screw; 9. Threaded hole; 10. Adjusting gear; 11. Internal threaded sleeve; 12. Transmission gear; 13. Adjusting screw; 14. Rubber strip. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0021] like Figures 1 to 4As shown, a workpiece clamping structure for a CNC machine tool, a plurality of guide columns 2 are detachably mounted on the top of a T-shaped base 1, a guide adjustment rod 3 is slidably mounted on the outer side of the guide column 2, a sliding adjustment rod 4 is slidably inserted at one end of the guide adjustment rod 3, a center rod 5 is fixed at the other end of the sliding adjustment rod 4, a lifting support pad 6 is movably mounted at the upper and lower ends of the center rod 5, two internally threaded sleeves 11 are mounted inside the center rod 5, a transmission gear 12 is fixed on the outer surface of the two internally threaded sleeves 11, and the two transmission gears 12 mesh with each other The adjusting gear 10 is meshed with one side of the transmission gear 12, a short shaft is fixed through the middle of the adjusting gear 10, and the end of the short shaft is rotatably connected to the center rod 5. An adjusting screw rod 13 is inserted through the inside of the internal threaded sleeve 11, and one end of the adjusting screw rod 13 is fixed to the lifting support pad 6. The adjusting gear 10, the transmission gear 12 and the internal threaded sleeve 11 are used to drive the adjusting screw rod 13 to move, thereby changing the distance between the two lifting support pads 6, and the lifting support pad 6 and the center rod 5 are used to support the workpiece.

[0022] The outer surface of the adjusting screw rod 13 and the inner surface of the internal threaded sleeve 11 are provided with the same downward threads. The adjusting screw rod 13 and the internal threaded sleeve 11 are transmitted by threads. The positions of the two adjusting screw rods 13 are rotationally symmetrical, and the threads on the outer surfaces of the two adjusting screw rods 13 are the same downward, ensuring that when the two internal threaded sleeves 11 rotate at the same time, the two adjusting screw rods 13 move in opposite or same directions, thereby changing the distance between the two center rods 5.

[0023] A threaded hole 9 is provided at the top of the guide column 2, and a part pressing plate 7 is installed above the guide column 2. A fastening screw 8 is inserted through one end of the part pressing plate 7, and the bottom end of the fastening screw 8 is screwed into the threaded hole 9 through a thread. A gasket is detachably placed between the part pressing plate 7 and the guide column 2. The height of the part pressing plate 7 is changed by the gasket, and the part pressing plate 7 and the guide column 2 are fixed by the fastening screw 8, and the workpiece is pressed by the part pressing plate 7.

[0024] The upper and lower surfaces of the end of the sliding adjustment rod 4 inserted into the guide adjustment rod 3 are provided with rubber strips 14. The thickness of the rubber strips 14 is greater than the spacing between the sliding adjustment rod 4 and the guide adjustment rod 3. The rubber strips 14 are used to increase the friction between the sliding adjustment rod 4 and the guide adjustment rod 3 to ensure that the sliding adjustment rod 4 cannot fall from the guide adjustment rod 3 without human intervention.

[0025] Working principle: First, slide the T-shaped base 1 into the T-shaped slot of the CNC machine tool processing table, slide and adjust the position of the guide column 2 so that the guide column 2 is close to the workpiece to be clamped, then adjust the distance between the center rod 5 and the guide column 2 so that the center rod 5 is located between the workpiece and the CNC machine tool processing table, and rotate the adjusting gear 10. When the adjusting gear 10 rotates, it drives the two transmission gears 12 and the internal threaded sleeve 11 to rotate. At this time, the ends of the two adjusting screw rods 13 and the center rod 5 extend out, and the adjusting screw rod 13 drives the lifting support pad 6 to move so that the two 16 are in contact with the workpiece and the CNC machine tool processing table respectively, so as to support the workpiece. The support is used to level the upper surface of the workpiece, and then a suitable number of gaskets are placed between the part pressure plate 7 and the guide column 2, and the part pressure plate 7 and the guide column 2 are connected and fixed by tightening screws 8, and one end of the part pressure plate 7 is ensured to overlap the clamping position on the upper surface of the workpiece to complete the clamping and clamping of the workpiece. The center rod 5, the lifting support pad 6 and the guide column 2 are connected by the guide adjustment rod 3 and the sliding adjustment rod 4, so that the components required for clamping the workpiece are integrated, and there is no need to search for the clamping tool when clamping the workpiece, and the use required during the workpiece clamping process is shortened, shortening the preparation time for processing and improving work efficiency.

[0026] It is obvious 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 features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A workpiece clamping structure for a CNC machine tool, comprising a T-shaped base (1), characterized in that: A plurality of guide columns (2) are detachably mounted on the top of the T-shaped base (1); a guide adjustment rod (3) is slidably mounted on the outer side of the guide column (2); a sliding adjustment rod (4) is slidably inserted into one end of the guide adjustment rod (3); a center rod (5) is fixed to the other end of the sliding adjustment rod (4); a lifting support pad (6) is movably mounted on the upper and lower ends of the center rod (5); two internally threaded sleeves (11) are mounted inside the center rod (5); transmission gears (12) are fixed to the outer surfaces of the two internally threaded sleeves (11); the two transmission gears (12) are meshed with each other; one side of one of the transmission gears (12) is meshedly connected with an adjustment gear (10); a short shaft is fixedly passed through the middle of the adjustment gear (10); an end of the short shaft is rotatably connected to the center rod (5); an adjustment screw rod (13) is passed through the inside of the internally threaded sleeve (11); and one end of the adjustment screw rod (13) is fixed to the lifting support pad (6).

2. The workpiece clamping structure for a CNC machine tool according to claim 1, characterized in that: The outer surface of the adjusting screw rod (13) and the inner surface of the internal threaded sleeve (11) are provided with the same downward threads, and the adjusting screw rod (13) and the internal threaded sleeve (11) are driven by threads.

3. The workpiece clamping structure for a CNC machine tool according to claim 2, characterized in that: The positions of the two adjusting screw rods (13) are rotationally symmetrical, and the threads on the outer surfaces of the two adjusting screw rods (13) are identical downwards.

4. The workpiece clamping structure for a CNC machine tool according to claim 1, characterized in that: A threaded hole (9) is provided at the top end of the guide column (2), and a part pressing plate (7) is installed above the guide column (2).

5. The workpiece clamping structure for a CNC machine tool according to claim 4, characterized in that: A fastening screw (8) is inserted through one end of the part pressing plate (7), and the bottom end of the fastening screw (8) is screwed into the inside of the threaded hole (9) through a thread. A gasket is detachably placed between the part pressing plate (7) and the guide column (2).

6. The workpiece clamping structure for a CNC machine tool according to claim 1, characterized in that: The upper and lower surfaces of the end of the sliding adjustment rod (4) inserted into the guide adjustment rod (3) are both provided with rubber strips (14), and the thickness of the rubber strip (14) is greater than the spacing between the sliding adjustment rod (4) and the guide adjustment rod (3).

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