Hydraulic collet collet for numerical control machine tool

Abstract

The utility model discloses a hydraulic collet chuck for a numerical control machine tool, which relates to the technical field of collet chucks and comprises a collet chuck body, four cracks are arranged on the periphery of the collet chuck body, and a clamping mechanism is fixedly connected to the middle of the outer surface of the collet chuck body. A mounting mechanism is movably connected to the bottom of the spring chuck body, and the clamping mechanism comprises four threaded inclined plates. According to the hydraulic collet chuck for the numerical control machine tool, through the arrangement of the containing groove, no protruding part exists on the outer surface of the connecting base, meanwhile, the upper side and the lower side of the containing groove are both in a semi-cylindrical shape, the pulling plate can be pulled out easily, the connecting block and the connecting groove which are matched with each other in size are arranged in a matched mode, and therefore the pulling plate can be pulled out easily. The stability after connection is ensured, so that the spring chuck main body can be conveniently mounted on hydraulic equipment, and parts with different specifications can be conveniently clamped.

Description

Technical Field

[0001] The utility model relates to the technical field of spring chucks, in particular to a hydraulic spring chuck for numerically controlled machine tools. Background Art

[0002] The spring chuck is a spare workpiece clamping device. The spring chuck can be used to locate and clamp the workpiece for turning. It can also be used to locate and clamp the tool, grinding and milling workpiece or many other occasions. It is mainly connected to the spindle of the hydraulic equipment on the CNC machine tool.

[0003] For example, Chinese patent publication number CN205437203U discloses a spring chuck, which solves the problem that when the spring chuck is in use, the chuck clamps the part, and the part is subjected to milling or drilling operations with other parts, it is easy to vibrate and wear, resulting in the spring chuck being unable to tighten with the part during processing, resulting in gaps, causing looseness, and prone to danger. The key point of its technical solution is that the inner wall of the clamping hole is provided with anti-slip patterns, and the anti-slip patterns are evenly distributed on the inner wall of the clamping hole. With the spring chuck of the utility model, when the chuck clamps the part, operations such as milling or drilling with the part and other parts can be carried out safely, reducing gaps and looseness, and having high safety performance.

[0004] The existing technology has the following problems:

[0005] When the spring chuck is in use, the chuck clamps the parts. When the parts are operated, vibration and wear are likely to occur, resulting in the spring chuck being unable to clamp the parts, which is prone to certain dangers. At the same time, the existing spring chuck is not easy to replace and cannot be adjusted to adapt to parts of different specifications, and its practicality is low. Utility Model Content

[0006] The utility model provides a hydraulic spring chuck for a numerically controlled machine tool to solve the problems raised in the above background technology.

[0007] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0008] A hydraulic spring chuck for a numerically controlled machine tool comprises a spring chuck body, four slits are formed around the spring chuck body, a clamping mechanism is fixedly connected to the middle position of the outer surface of the spring chuck body, and a mounting mechanism is movably connected to the bottom of the spring chuck body.

[0009] Preferably: the clamping mechanism includes four threaded inclined plates, the opposite surfaces of the four threaded inclined plates are fixedly connected to the lower end of the outer surface of the spring chuck body, a threaded rotating sleeve is movably connected to the middle position of the outer surface of the spring chuck body, four baffles are fixedly connected to the lower end of the outer surface of the spring chuck body, and a connecting block is fixedly connected to the middle position of the bottom of the spring chuck body.

[0010] Preferably, three rubber strips are fixedly connected around the upper end of the inner wall of the spring clamp body, and the three rubber strips are all in the shape of semi-cylindrical strips.

[0011] Preferably, the threaded portion of the outer surface of the threaded inclined plate is threadedly connected to the threaded portion of the inner wall of the threaded sleeve, and the outer surface of the threaded inclined plate is inclined.

[0012] Preferably: the mounting mechanism comprises a connecting seat, the top of the connecting seat is movably connected to the bottom of the spring chuck body, the front and rear sides of the right end of the connecting seat are movably connected to two connecting rods, the right ends of the two connecting rods are fixedly connected to a pull plate, the middle positions of the outer surfaces of the two connecting rods are fixedly connected to a slide plate, the right ends of the outer surfaces of the two connecting rods are movably connected to a spring, the left end of the spring is fixedly connected to the right side of the slide plate, and sliding grooves are provided on the front and rear sides of the middle right end of the connecting seat.

[0013] Preferably, a placement groove is provided in the middle of the right end of the connecting seat, the shape and size of the middle part of the placement groove are consistent with the shape and size of the pull plate, and the shapes of the upper and lower sides of the placement groove are both semi-cylindrical.

[0014] Preferably, a connecting groove is provided in the middle of the top of the connecting seat, and the shape and size of the connecting groove are consistent with those of the connecting block.

[0015] Preferably, connection holes are provided at the front and rear sides of the connection block, and the inner wall diameter of the connection hole is consistent with the outer surface diameter of the connection rod.

[0016] Due to the adoption of the above technical solution, the utility model has achieved the following technical progress compared with the prior art:

[0017] 1. The utility model provides a hydraulic spring chuck for CNC machine tools. By setting a placement groove, there is no convex part on the outer surface of the connecting seat. At the same time, the upper and lower sides of the placement groove are both semi-cylindrical, so that the pull plate can be pulled out more easily. The connecting blocks and connecting grooves that match each other in size are matched to ensure the stability after connection, so that the spring chuck body can be easily installed on the hydraulic equipment, so as to facilitate the clamping of parts of different specifications.

[0018] 2. The utility model provides a hydraulic spring chuck for CNC machine tools. By rotating the threaded sleeve, the four petals of the spring chuck body are gathered inward to clamp the parts. The multiple rubber strips with softer materials are contacted with the parts and compressed under extrusion, and a large friction force is generated between the parts, so that the parts will not fall off easily, ensuring a certain safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 This is a schematic cross-sectional view of the clamping mechanism of the utility model;

[0021] Figure 3 It is a partial structural schematic diagram of the clamping mechanism of the utility model;

[0022] Figure 4 This is a schematic diagram of the installation mechanism structure of the utility model;

[0023] Figure 5 It is a cross-sectional structural schematic diagram of the installation mechanism of the utility model.

[0024] In the figure: 1. spring chuck body; 2. clamping gap; 3. mounting mechanism; 4. clamping mechanism; 41. threaded inclined plate; 42. baffle; 43. threaded rotating sleeve; 44. rubber strip; 45. connecting block; 46. connecting hole; 31. connecting seat; 32. connecting groove; 33. pull plate; 34. placement groove; 35. connecting rod; 36. slide plate; 37. spring; 38. slide groove. DETAILED DESCRIPTION

[0025] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0026] like Figure 1 As shown, a hydraulic spring chuck for a CNC machine tool comprises a spring chuck body 1, four slits 2 are formed around the spring chuck body 1, a clamping mechanism 4 is fixedly connected to the middle position of the outer surface of the spring chuck body 1, and a mounting mechanism 3 is movably connected to the bottom of the spring chuck body 1.

[0027] It should be noted that, by setting the placement groove 34, there will be no raised part on the outer surface of the connecting seat 31. At the same time, the upper and lower sides of the placement groove 34 are both semi-cylindrical, so that the pull plate 33 can be pulled out relatively easily, and the connecting block 45 and the connecting groove 32 that are matched in size are provided to ensure the stability after connection, so that the spring chuck body 1 can be easily installed on the hydraulic equipment, so as to facilitate the clamping of parts of different specifications. By rotating the threaded sleeve 43, the four petals of the spring chuck body 1 are gathered inwardly, and then the parts are clamped. The multiple rubber strips 44 made of softer material are provided, which will contact and compress the parts under extrusion, and generate greater friction between the parts, so that the parts will not fall off easily, ensuring a certain safety.

[0028] like Figure 2 , Figure 3 As shown, the clamping mechanism 4 includes four threaded inclined plates 41, the opposite surfaces of the four threaded inclined plates 41 are fixedly connected to the four sides of the lower end of the outer surface of the spring chuck body 1, a threaded rotating sleeve 43 is movably connected to the middle position of the outer surface of the spring chuck body 1, four baffles 42 are fixedly connected to the four sides of the lower end of the outer surface of the spring chuck body 1, and a connecting block 45 is fixedly connected to the middle position of the bottom of the spring chuck body 1.

[0029] It should be noted that the part to be clamped is placed in the middle position of the spring chuck body 1 and moved downward, and then the threaded sleeve 43 is slid upward so that the threaded sleeve 43 contacts the threaded inclined plate 41, and then the threaded sleeve 43 is rotated clockwise. Since the outer surface of the threaded inclined plate 41 and the inner wall of the threaded sleeve 43 are threadedly connected, the threaded sleeve 43 continues to rise. At this time, the threaded inclined plate 41 will gather inward under the squeezing of the threaded sleeve 43, and then the part is clamped. When the threaded sleeve 43 cannot be rotated, it means that the clamping is to the maximum extent. The width of the gap 2 ensures that the maximum specification of the part can be supported. A plurality of rubber strips 44 are arranged at the upper end of the spring chuck body 1. The material of the rubber strips 44 is relatively soft. Under squeezing, it will contact and compress the part, and at the same time generate a large friction between the parts, so that the parts will not fall off easily, ensuring a certain degree of safety.

[0030] like Figure 2 As shown, three rubber strips 44 are fixedly connected around the upper end of the inner wall of the spring clamp body 1, and the three rubber strips 44 are all in the shape of semi-cylindrical strips.

[0031] It should be noted that a plurality of rubber strips 44 are provided at the upper end of the spring chuck body 1. The rubber strips 44 are made of a relatively soft material and will come into contact with and be compressed by the parts under extrusion, while generating a relatively large friction force with the parts, thereby preventing the parts from falling off easily.

[0032] like Figure 2 , Figure 3 As shown, the threaded portion of the outer surface of the threaded inclined plate 41 is threadedly connected with the threaded portion of the inner wall of the threaded rotating sleeve 43, and the outer surface of the threaded inclined plate 41 is inclined.

[0033] It should be noted that when the threaded sleeve 43 is rotated clockwise, the outer surface of the threaded inclined plate 41 and the inner wall of the threaded sleeve 43 are threadedly connected, so that the threaded sleeve 43 continues to rise. At this time, the threaded inclined plate 41 will gather inward under the pressure of the threaded sleeve 43, thereby clamping the part.

[0034] like Figure 4 , Figure 5 As shown, the mounting mechanism 3 includes a connecting seat 31, the top of the connecting seat 31 is movably connected to the bottom of the spring clamp body 1, two connecting rods 35 are movably connected to the front and rear sides of the right end of the connecting seat 31, the right ends of the two connecting rods 35 are fixedly connected to the pull plates 33, the middle positions of the outer surfaces of the two connecting rods 35 are fixedly connected to the slide plates 36, the right ends of the outer surfaces of the two connecting rods 35 are movably connected to the springs 37, the left ends of the springs 37 are fixedly connected to the right side of the slide plates 36, and the front and rear sides of the middle right end of the connecting seat 31 are provided with slide grooves 38.

[0035] It should be noted that, first, the bottom of the connecting seat 31 is connected to the main shaft of the hydraulic equipment for CNC machine tools. By pulling the pull plate 33 to the right end, the pull plate 33 is separated from the placement groove 34, and the middle of the placement groove 34 fits with the pull plate 33, so that there is no convex part on the outer surface of the connecting seat 31. At the same time, the upper and lower sides of the placement groove 34 are both semi-cylindrical, so that the pull plate 33 can be pulled out more easily, so that the connecting rod 35 moves to the right end, thereby driving the slide plate 36 to move to the right end along the slide groove 38, so that the spring 3 7 is compressed, and then the bottom of the spring chuck body 1 is moved toward the connecting seat 31, so that the connecting block 45 slides into the connecting groove 32. The connecting block 45 and the connecting groove 32 have the same shape and are relatively well matched, which ensures the stability after connection. At this time, the pull plate 33 is released, and under the action of the spring 37, the connecting rod 35 moves to the left end and then slides into the connecting hole 46. The size of the connecting hole 46 and the connecting rod 35 is the same, so the spring chuck body 1 can be easily installed on the hydraulic equipment, so as to facilitate the clamping of parts of different specifications.

[0036] like Figure 4 , Figure 5 As shown, a placement groove 34 is opened in the middle position of the right end of the connecting seat 31. The shape and size of the middle part of the placement groove 34 are consistent with the shape and size of the pull plate 33, and the shapes of the upper and lower sides of the placement groove 34 are both semi-cylindrical.

[0037] It should be noted that the middle of the placement groove 34 fits with the pull plate 33, so that there is no protrusion on the outer surface of the connecting seat 31. At the same time, the upper and lower sides of the placement groove 34 are both semi-cylindrical, so that the pull plate 33 can be pulled out more easily.

[0038] like Figure 2 , Figure 4 , Figure 5 As shown, a connection groove 32 is provided in the middle of the top of the connection seat 31 , and the shape and size of the connection groove 32 are consistent with those of the connection block 45 .

[0039] It should be noted that the connection block 45 slides into the connection groove 32 , and the connection block 45 and the connection groove 32 have the same shape and fit well, thereby ensuring stability after connection.

[0040] like Figure 2 , Figure 5 As shown, connection holes 46 are provided at the front and rear sides of the connection block 45 , and the inner wall diameter of the connection hole 46 is consistent with the outer surface diameter of the connection rod 35 .

[0041] It should be noted that the connecting rod 35 slides into the connecting hole 46 , and the connecting hole 46 and the connecting rod 35 are of the same size, so that the spring chuck body 1 can be conveniently installed on the hydraulic equipment.

[0042] The working principle of the utility model is as follows: first, the bottom of the connecting seat 31 is connected to the main shaft of the hydraulic equipment for CNC machine tools, and the pulling plate 33 is pulled to the right end so that the pulling plate 33 is separated from the placement groove 34, and the middle of the placement groove 34 fits with the pulling plate 33, so that there is no convex part on the outer surface of the connecting seat 31, and at the same time, the upper and lower sides of the placement groove 34 are semi-cylindrical, so that the pulling plate 33 can be pulled out more easily, so that the connecting rod 35 moves to the right end, thereby driving the sliding plate 36 to move to the right end along the sliding groove 38, thereby compressing the spring 37, and then the bottom of the spring chuck body 1 is moved toward the connecting seat 31, so that the connecting block 45 slides into the connecting groove 32. The connecting block 45 and the connecting groove 32 have the same shape and fit well, which ensures the stability after connection. At this time, the pulling plate 33 is released, and under the action of the spring 37, the connecting rod 35 moves to the left end, and then slides into the connecting hole 46. The size of the connecting hole 46 and the connecting rod 35 is consistent, so it can be convenient The spring chuck body 1 is installed on the hydraulic equipment to facilitate the clamping of parts of different specifications. The parts to be clamped are placed in the middle position of the spring chuck body 1 and moved downward, and then the threaded sleeve 43 is slid upward so that the threaded sleeve 43 contacts the threaded inclined plate 41, and then the threaded sleeve 43 is rotated clockwise. Since the outer surface of the threaded inclined plate 41 and the inner wall of the threaded sleeve 43 are threadedly connected, the threaded sleeve 43 continues to rise. At this time, the threaded inclined plate 41 will gather inward under the extrusion of the threaded sleeve 43, and then the parts are clamped. When the threaded sleeve 43 cannot be rotated, it means that the clamping is to the maximum extent. The width of the gap 2 ensures that the maximum specifications of the parts can be tolerated. A plurality of rubber strips 44 are arranged at the upper end of the spring chuck body 1. The material of the rubber strips 44 is relatively soft. Under extrusion, it will contact and compress the parts, and at the same time generate a large friction between the parts, so that the parts will not fall off easily, ensuring a certain degree of safety.

[0043] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A hydraulic collet chuck for a numerically controlled machine tool, comprising a collet chuck body (1), characterized in that: Four slits (2) are formed around the spring chuck body (1); a clamping mechanism (4) is fixedly connected to the middle of the outer surface of the spring chuck body (1); and a mounting mechanism (3) is movably connected to the bottom of the spring chuck body (1).

2. The hydraulic collet chuck for CNC machine tools according to claim 1, characterized in that: The clamping mechanism (4) comprises four threaded inclined plates (41), the opposite surfaces of the four threaded inclined plates (41) are fixedly connected to the four lower ends of the outer surface of the spring chuck body (1), a threaded rotating sleeve (43) is movably connected to the middle of the outer surface of the spring chuck body (1), four baffles (42) are fixedly connected to the four lower ends of the outer surface of the spring chuck body (1), and a connecting block (45) is fixedly connected to the middle of the bottom of the spring chuck body (1).

3. The hydraulic collet chuck for CNC machine tools according to claim 2, characterized in that: Three rubber strips (44) are fixedly connected around the upper end of the inner wall of the spring clamp body (1), and the three rubber strips (44) are all in the shape of semi-cylindrical strips.

4. The hydraulic collet chuck for CNC machine tools according to claim 2, characterized in that: The threaded portion on the outer surface of the threaded inclined plate (41) is threadedly connected to the threaded portion on the inner wall of the threaded rotating sleeve (43), and the outer surface of the threaded inclined plate (41) is inclined.

5. The hydraulic collet chuck for CNC machine tools according to claim 2, characterized in that: The mounting mechanism (3) comprises a connecting seat (31), the top of the connecting seat (31) is movably connected to the bottom of the spring clamp body (1), the front and rear sides of the right end of the connecting seat (31) are movably connected to two connecting rods (35), the right ends of the two connecting rods (35) are fixedly connected to a pull plate (33), the middle positions of the outer surfaces of the two connecting rods (35) are fixedly connected to a slide plate (36), the right ends of the outer surfaces of the two connecting rods (35) are movably connected to a spring (37), the left end of the spring (37) is fixedly connected to the right side of the slide plate (36), and the front and rear sides of the middle right end of the connecting seat (31) are provided with a slide groove (38).

6. The hydraulic collet chuck for CNC machine tools according to claim 5, characterized in that: A placement groove (34) is provided in the middle of the right end of the connection seat (31). The shape and size of the middle part of the placement groove (34) are consistent with the shape and size of the pull plate (33), and the shapes of the upper and lower sides of the placement groove (34) are both semi-cylindrical.

7. The hydraulic collet chuck for CNC machine tools according to claim 5, characterized in that: A connecting groove (32) is provided in the middle of the top of the connecting seat (31), and the shape and size of the connecting groove (32) are consistent with the shape and size of the connecting block (45).

8. The hydraulic collet chuck for CNC machine tools according to claim 5, characterized in that: The front and rear sides of the connection block (45) are both provided with connection holes (46), and the inner wall diameter of the connection hole (46) is consistent with the outer surface diameter of the connection rod (35).

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