Shaft part supporting device and machine tool

Abstract

The utility model relates to the technical field of shaft part machining, in particular to a shaft part supporting device and a machine tool. The shaft part supporting device comprises a rolling wheel set and a supporting block, the rolling wheel set comprises at least two rolling wheels, the rolling wheels are rotationally connected with the supporting block, and the two rolling wheels are arranged on the supporting block in a spaced mode. The two rolling wheels are arranged on the peripheral side of the overhanging part of the shaft part and make contact with the peripheral face of the shaft part, and the rolling wheels rotate along with the shaft part. The roller set is provided with at least two rollers, the rollers can support the overhanging part of the shaft part in multiple directions, the shaft part is not prone to vibration in the rotating machining process, and then cutter vibration is not prone to occurring. And the roller is in contact with the peripheral surface of the shaft part and can rotate along with the shaft part, so that the surface of the shaft part is not easily damaged.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of shaft parts processing, and specifically relates to a shaft part supporting device and machine tool. BACKGROUND

[0002] A CNC (Computer Numerical Control) machine tool is a high-precision machining equipment controlled by a computer, which is widely used in the fields of mechanical manufacturing, aerospace, automobile industry, etc. The CNC machine tool controls the movement of the cutter through a pre-written program to realize the precision machining of materials such as metal and plastic. Compared with the traditional manual machine tool, the CNC machine tool has higher machining precision and higher production efficiency.

[0003] When machining shaft parts by a machine tool, the part is usually clamped at one end first, and then the part is driven to rotate and machined by a cutter. In this clamping mode, the part of the shaft part that is not clamped is in a cantilevered state, which can usually meet the requirements of machining precision when machining short shaft parts. However, when the length of the shaft part is relatively long, the phenomenon of tool vibration is likely to occur, which leads to a decrease in machining precision or even damage to the cutter. SUMMARY

[0004] The utility model mainly solves the problem that the tool is easy to vibrate when the machine tool machines a long shaft part.

[0005] According to a first aspect, an embodiment provides a shaft part supporting device, comprising a roller set and a supporting block, the roller set comprising at least two rollers, the rollers being rotationally connected with the supporting block, and the two rollers being arranged on the supporting block at intervals,

[0006] Among them, two said rollers are configured to contact the outer circumferential side of the cantilevered part of the shaft part and the outer circumferential surface of the shaft part, and the rollers rotate with the shaft part.

[0007] In some embodiments, the supporting block is provided with a clearance groove, and the two rollers are respectively located on both sides of the clearance groove, and the clearance groove is used to avoid the shaft part.

[0008] In some embodiments, the shaft part supporting device comprises a fixing block, the fixing block is used to fix the supporting block, and one side of the supporting block is rotationally connected with the fixing block to be able to swing relative to the fixing block.

[0009] In some embodiments, the shaft part supporting device comprises an adjusting member, the adjusting member is supported between the supporting block and the fixing block, and is used to adjust the swing angle of the supporting block.

[0010] In some embodiments, the first end of the adjusting member is threadedly connected with the fixing block, and the second end of the adjusting member is supported on the supporting block.

[0011] In some embodiments, the supporting block is provided with a groove, and the second end of the adjusting member is fitted in the groove.

[0012] In some embodiments, the middle part of the adjusting member is provided with an annular protrusion for rotating the adjusting member.

[0013] In some embodiments, the fixing block is provided with a first protrusion and a second protrusion, and the shaft part supporting device further comprises a connecting shaft, the supporting block is located between the first protrusion and the second protrusion, and is rotatably connected with the fixing block through the connecting shaft.

[0014] In some embodiments, the fixing block is provided with a fixing hole for fixedly connecting the fixing block with a machine tool.

[0015] According to the second aspect, in an embodiment, a machine tool is provided, comprising a machine tool body and the shaft part supporting device according to any one of the above embodiments.

[0016] According to the shaft part supporting device of the above embodiments, the roller set is provided with at least two rollers, the rollers can support the overhanging part of the shaft part from multiple directions, the shaft part is not prone to vibration during the turning process, and the tool is not prone to tool breakage.

[0017] In addition, the rollers are in contact with the outer circumferential surface of the shaft part and can rotate with the shaft part, and the surface of the shaft part is not prone to damage. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 An application scenario diagram of an embodiment of the shaft part supporting device of the utility model;

[0019] Figure 2 For Figure 1 A perspective structural diagram of the shaft part supporting device;

[0020] Figure 3 For Figure 1 A front view of the shaft part supporting device;

[0021] Figure 4 For Figure 1 A side view of the shaft part supporting device;

[0022] Figure 5 For Figure 1 A top view of the shaft part supporting device;

[0023] Figure 6For Figure 4 Cross-sectional view at A-A.

[0024] Reference signs:

[0025] 1, roller; 11, rotating shaft; 2, supporting block; 21, avoiding groove; 3, fixed block; 31, fixed hole; 32, first protruding part; 33, second protruding part; 4, connecting shaft; 5, adjusting part; 51, annular protrusion; 6, three-jaw chuck; 7, shaft part. DETAILED DESCRIPTION

[0026] The utility model will be further described in detail below through specific implementation modes combined with the drawings. Similar elements in different implementation modes adopt relevant similar element signs. In the following implementation modes, many details are described in order to make the present application be better understood. However, the person skilled in the art can easily realize that part of the features can be omitted in different cases or can be replaced by other elements, materials or methods. In some cases, some operations related to the present application are not shown or described in the specification in order to avoid the core part of the present application being overwhelmed by too much description, and it is not necessary to describe these related operations in detail for the person skilled in the art according to the description in the specification and general technical knowledge in the art.

[0027] In addition, the features, operations or characteristics described in the specification can be combined in any appropriate way to form various implementation modes. Meanwhile, the steps or actions in the method description can also be sequentially replaced or adjusted in a manner that is obvious to the person skilled in the art. Therefore, the various sequences in the specification and the drawings are only for the purpose of clearly describing a certain embodiment and do not mean that the sequence is necessary, unless otherwise stated that a certain sequence must be followed.

[0028] The serial numbers of components in the text, such as "first", "second", etc., are only used to distinguish the described objects and do not have any sequence or technical meaning. The "connection" and "coupling" in the present application include direct and indirect connection (coupling) unless otherwise specified.

[0029] When machining a shaft part through a machine tool, the end of the shaft part generally needs to be clamped, and the clamping is generally carried out through a three-jaw chuck, and the other end of the shaft part is in a cantilevered state. During the machining process, the three-jaw chuck generally drives the shaft part to rotate, and the cutter cuts the shaft part on one side of the shaft part.

[0030] When the shaft part is long, the length of the overhanging part of the shaft part is long due to the limited length of clamping, the long overhanging part is insufficient in rigidity and is prone to swing in the radial direction, and in the process of contacting with the tool, the shaft part is prone to interact with the tool, resulting in tool vibration.

[0031] To solve the above problems, the overhanging part of the shaft part can be supported, and the support adopts the form of a roller, which does not affect the rotation of the shaft part and is not easy to damage the surface of the shaft part. After supporting the overhanging part of the shaft part, the above swing can be weakened or eliminated, thereby solving the problem of tool vibration.

[0032] Please refer to Figures 2-5 An embodiment provides a shaft part supporting device, which comprises a roller set and a supporting block 2. The roller set comprises at least two rollers 1, and the rollers 1 are rotationally connected with the supporting block 2. In this embodiment, two rollers 1 are provided, and the rollers 1 can be rotationally connected with the supporting block 2 in various ways.

[0033] Optionally, the end surface of the roller 1 is provided with a rotating shaft 11, and the supporting block 2 is provided with a mounting hole, and the rotating shaft 11 is assembled in the mounting hole and can rotate in the mounting hole.

[0034] Optionally, a bearing is arranged between the rotating shaft 11 and the mounting hole, which can reduce the resistance of the roller 1 rotating, and the roller 1 can rotate with the shaft part without easily damaging the surface of the shaft part. Alternatively, the rotating shaft 11 is arranged on the supporting block 2, and the roller 1 is rotationally assembled on the rotating shaft 11 of the supporting block 2.

[0035] The two rollers 1 are arranged at intervals on the supporting block 2, and the two rollers 1 are configured to contact the outer circumferential side of the overhanging part of the shaft part and the outer circumferential surface of the shaft part to support the shaft part, and the roller 1 rotates with the shaft part. The two rollers 1 are arranged at intervals, the overhanging part of the shaft part is located between the two rollers 1, and the two rollers 1 can support the shaft part from two directions, so that the shaft part is not prone to vibrate during rotation machining, thereby avoiding tool vibration.

[0036] The position of the roller 1 supporting the shaft part can be the end of the shaft part away from the clamping chuck, can be the middle of the overhanging part of the shaft part, or can be the position close to the tool machining position on the overhanging part.

[0037] In some embodiments, please refer to Figures 1-3The support block 2 is provided with an avoiding groove 21, and the two rollers 1 are respectively located at two sides of the avoiding groove 21. The avoiding groove 21 is used for avoiding the shaft part. In the embodiment, the avoiding groove 21 is in an arc shape, and the two rollers 1 are respectively located at two sides of the arc-shaped avoiding groove 21. When the roller 1 supports the shaft part, the avoiding groove 21 on the support block 2 can avoid the shaft part, so as to avoid damage caused by the contact between the support block 2 and the shaft part.

[0038] In other embodiments, the avoiding groove 21 can also be in a square shape, a rectangular shape or a V shape.

[0039] In some embodiments, please refer to Figures 2-5 The shaft part supporting device comprises a fixing block 3, which is used for fixing the support block 2. One side of the support block 2 is rotationally connected with the fixing block 3, so as to be able to swing relative to the fixing block 3. The fixing block 3 can be arranged below the support block 2 and is used for supporting the support block 2.

[0040] The fixing block 3 can be provided with a fixing hole 31. After the support block 2 is adjusted to a suitable position so that the roller 1 supports the shaft part, the fixing block 3 can be fixed with the machine tool by using a fastener such as a fastening bolt through the fixing hole 31. Specifically, the fixing hole 31 can be provided with two fixing holes 31, and the two fixing holes 31 are respectively located at two ends of the fixing block 3. After the fixing block 3 is fixed with the machine tool, the support of the roller 1 to the shaft part is more stable.

[0041] One side of the support block 2 is rotationally connected with the fixing block 3, so that the support block 2 can swing relative to the fixing block 3. Since the roller 1 is arranged on the fixing block 3, the position and height of the roller 1 will change in the process of swinging of the support block 2. The swinging of the support block 2 can make the support of the roller 1 to the shaft part more sufficient.

[0042] In the specific adjustment process, the shaft part supporting device can be first moved as a whole to the lower side of the shaft part, and then the swinging angle of the support block 2 is adjusted to make the roller 1 fully contact with the shaft part. After the adjustment is completed, the fixing block 3 can be fixed by using a fastener.

[0043] In some embodiments, please refer to Figures 2-5 The fixing block 3 is provided with a first protruding part 32 and a second protruding part 33. The shaft part supporting device further comprises a connecting shaft 4. The support block 2 is located between the first protruding part 32 and the second protruding part 33 and is rotationally connected with the fixing block 3 through the connecting shaft 4.

[0044] The first and second protrusions 32 and 33 can be first and second protruding blocks arranged opposite to and spaced apart from each other on the fixed block 3, one end of the support block 2 is located between the first and second protruding blocks, and the connecting shaft 4 passes through the first protruding block, the support block 2 and the second protruding block in sequence to rotationally connect the support block 2 with the fixed block 3.

[0045] In some embodiments, referring to Figures 2-3 , the shaft part support device comprises an adjusting member 5 supported between the support block 2 and the fixed block 3 and used to adjust the swing angle of the support block 2. Since one end of the support block 2 is rotationally connected with the fixed block 3, the adjusting member 5 can be arranged at the other end of the support block 2 to adjust the swing angle of the support block 2.

[0046] Specifically, the adjusting member 5 can be a support column supported between the fixed block 3 and the support block 2 through support columns of different lengths to adjust the swing angle of the support block 2.

[0047] In some embodiments, referring to Figure 6 , a first end of the adjusting member 5 is threadedly connected with the fixed block 3, and a second end of the adjusting member 5 is supported on the support block 2. When it is necessary to adjust the swing angle of the support block 2, the adjusting member 5 can be rotated to change the length of the adjusting member 5 extending out, so that the support block 2 swings and the roller 1 fully contacts the shaft part.

[0048] In some embodiments, referring to Figure 6 , the support block 2 is provided with a recess, and the second end of the adjusting member 5 is fitted in the recess. Specifically, the recess can be a semispherical recess, and correspondingly, the second end of the adjusting member 5 is semispherical.

[0049] The second end of the adjusting member 5 is fitted in the recess, and due to the semispherical arrangement, the adjusting member 5 can be freely rotated to facilitate adjustment of the swing angle of the support block 2. On the other hand, the semispherical arrangement increases the contact area between the second end of the adjusting member 5 and the support block 2, and the support effect of the adjusting member 5 on the support block 2 is more stable.

[0050] In some embodiments, referring to Figures 2-3 , a middle part of the adjusting member 5 is provided with an annular protrusion 51 for rotating the adjusting member 5. Since the adjusting member 5 is located between the support block 2 and the fixed block 3, it is inconvenient to grip the adjusting member 5 when rotating it. After the annular protrusion 51 is arranged, it is convenient for an operator to grip the adjusting member 5, and thus it is convenient to rotate the adjusting member 5 to adjust the swing angle of the support block 2.

[0051] According to the second aspect, referring to Figure 1 , in an embodiment, a machine tool (only part of the structure of the machine tool is shown in the figure) is provided, which comprises a machine tool body and the shaft part support device in any of the above embodiments.

[0052] The machine tool body comprises a three-jaw chuck 6 for clamping the shaft part 7, one end of the shaft part 7 is clamped in the three-jaw chuck 6, and the other end is supported by the shaft part supporting device. The shaft part supporting device can be fixed on the machine tool body through the fixing block 3.

[0053] The shaft part supporting device is provided with a roller 1, the roller 1 can support the overhanging part of the shaft part 7, the shaft part 7 is not easy to vibrate during the process of rotary machining, and in turn, the tool is not easy to shake. At the same time, the roller 1 is in contact with the outer peripheral surface of the shaft part 7 and can rotate with the shaft part 7, and the surface of the shaft part 7 is not easy to be damaged.

[0054] The above application of specific examples to the utility model is described, only for help to understand the utility model, and not to limit the utility model. For the skilled in the art to which the utility model belongs, according to the idea of the utility model, a number of simple deductions, deformation or substitution can be made.

Claims

1. A support device for shaft-type parts, characterized in that, The shaft part supporting device comprises a supporting block and a roller set, the roller set comprises at least two rollers, the rollers are rotationally connected with the supporting block, and the two rollers are arranged at intervals on the supporting block, The two rollers are arranged on the outer circumferential side of the overhanging part of the shaft part and are in contact with the outer circumferential surface of the shaft part, and the rollers rotate with the shaft part.

2. The shaft part support apparatus according to claim 1, wherein The supporting block is provided with an avoiding groove, and the two rollers are respectively located on the two sides of the avoiding groove, and the avoiding groove is used for avoiding the shaft part.

3. The shaft part support apparatus according to claim 1, wherein The supporting block is provided with a fixed block, and one side of the supporting block is rotationally connected with the fixed block to be swingable relative to the fixed block.

4. The shaft part support apparatus according to claim 3, wherein The shaft part supporting device comprises an adjusting member, the adjusting member is supported between the supporting block and the fixed block, and is used for adjusting the swing angle of the supporting block.

5. The shaft part support apparatus according to claim 4, wherein The first end of the adjusting member is threadedly connected with the fixed block, and the second end of the adjusting member is supported on the supporting block.

6. The shaft part support apparatus according to claim 5, wherein The supporting block is provided with a recess, and the second end of the adjusting member is fitted in the recess.

7. The shaft part support apparatus according to claim 5, wherein The middle part of the adjusting member is provided with an annular protrusion, and the annular protrusion is used for rotating the adjusting member.

8. The shaft part support apparatus according to any one of claims 3 to 6, characterized by The fixed block is provided with a first protrusion and a second protrusion, and the shaft part supporting device further comprises a connecting shaft, the supporting block is located between the first protrusion and the second protrusion, and is rotationally connected with the fixed block through the connecting shaft.

9. The shaft part support apparatus according to any one of claims 3 to 6, characterized by The fixed block is provided with a fixed hole, and the fixed hole is used for fixedly connecting the fixed block with a machine tool.

10. A machine tool, characterized by The shaft part supporting device comprises: A machine tool body; The shaft part supporting device according to any one of claims 1-9.

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