High-precision rotatable auxiliary supporting device

Abstract

The utility model relates to the technical field of machining, in particular to a high-precision rotatable auxiliary supporting device which comprises a rotating center frame body, a rotating body arranged on one side of the rotating center frame body, four adjusting cavities arranged on the rotating body and clamping contacts arranged in the adjusting cavities in a sliding fit mode. The clamping contact comprises a flange cover arranged on the outer wall of the rotating body, a lead screw rotationally connected with the flange cover through a bearing, a nut and a threaded sleeve which are in threaded fit with the lead screw, a sliding sleeve connected with one end of the threaded sleeve, an ejector head arranged at one end of the sliding sleeve and located at one end of the lead screw, and a limiting open groove formed in the outer wall of the sliding sleeve. The locking mechanism is in threaded fit with one side of the rotating body and is in sliding fit with the limiting open slot; according to the device, the swing of the workpiece during supporting is reduced, the machining precision and the qualified rate are improved, the vibration problem in the high-precision machining process of the deep hole drilling and boring machine is solved, the machining precision of the whole machine is guaranteed, the industry development is promoted, and the machining efficiency and the product quality are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to mechanical processing technical field, concretely is a kind of high-precision rotatable auxiliary support device. BACKGROUND

[0002] At present, in domestic special industry, especially when the shaft parts of relatively long length are processed, special equipment such as numerical control deep hole drilling and boring machine needs to be processed, and such machine tool needs to increase auxiliary support device such as center stand on machine tool when processing workpiece.

[0003] However, the widely used center stand is mostly ordinary center stand with three claws or four claws, and the part contacting the workpiece is prone to swing when supporting the workpiece, and the manufacturing error and assembly error affect the working accuracy, and it is difficult to ensure the stability and rotation accuracy of the processed parts during processing, especially for the high-precision deep hole processing of deep hole drilling and boring machine industry, it is more difficult to ensure the accuracy, thereby affecting the machining accuracy of the whole machine, and seriously limiting the development of deep hole drilling and boring machine industry. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a kind of high-precision rotatable auxiliary support device, to solve the problem that the widely used three claws or four claws center stand is prone to swing when supporting the workpiece, and is affected by manufacturing and assembly error, it is difficult to ensure the stability and rotation accuracy of the processed parts, especially not conducive to the high-precision processing of deep hole drilling and boring machine, and limit the development of industry.

[0005] To achieve the above object, the utility model provides the following technical scheme: a kind of high-precision rotatable auxiliary support device, including rotating center stand body, further including rotating body being located at one side of rotating center stand body, four adjusting cavities being annularly spaced apart and being located on rotating body, clamping contact being slidably fitted in adjusting cavity, the clamping contact is connected with rotating body;The clamping contact includes flange cover being located on the outer wall of rotating body, screw rod being rotatably connected with flange cover by bearing, nut and threaded sleeve being threadedly engaged with screw rod and being respectively located at both ends of flange cover, sliding sleeve being connected with one end of threaded sleeve and being sleeved on the outer wall of screw rod, top being located at one end of sliding sleeve and being located at one end of screw rod, limiting open slot being located on the outer wall of sliding sleeve, locking mechanism being threadedly engaged with one side of rotating body and being slidably fitted with limiting open slot, one end of the nut is abutted with the outside of flange cover, one end of the flange cover extends to the inside of adjusting cavity, the threaded sleeve is located in the inside of adjusting cavity, and the sliding sleeve is slidably fitted with the inner wall of adjusting cavity.

[0006] Further, the locking mechanism includes handle being located at one side of rotating body, locking screw being connected with one end of handle, limiting locking block being rotatably connected with one end of locking screw, the limiting locking block is slidably fitted with limiting open slot, and the locking screw is threadedly engaged with rotating body.

[0007] Further, the rotating center frame body comprises a base, a center frame rotating sleeve arranged on the base, a rotating cylindrical main shaft rotatably connected in the center frame rotating sleeve through a bearing, and a rotating body connected with one end of the rotating cylindrical main shaft and arranged on the same central axis.

[0008] Further, the lower side of the base is provided with two spaced-apart pressing plates.

[0009] Compared with the prior art, the high precision rotatable auxiliary supporting device has the following beneficial effects:

[0010] The device reduces the swing of the contact part of the workpiece in the supporting process, thereby improving the machining precision and the qualified rate of the product, and eliminating the vibration problem generally faced by the deep hole drilling and boring machine industry during high-precision deep hole machining, avoiding the adverse effects of the vibration on the machining precision of the whole machine, not only injecting strong power for the continuous progress of the deep hole drilling and boring machine industry, but also laying a solid foundation for improving the machining efficiency and the product quality. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 is a sectional view of the high precision rotatable auxiliary supporting device of the utility model;

[0012] Figure 2 is a sectional view of the high precision rotatable auxiliary supporting device of the utility model; Figure 1 is an enlarged view of A in the figure.

[0013] In the figure: 1, base; 2, pressing plate; 3, center frame rotating sleeve; 4, rotating cylindrical main shaft; 5, rotating body; 6, limiting locking block; 7, adjusting cavity; 8, flange cover; 9, locking screw; 10, lead screw; 11, nut; 12, threaded sleeve; 13, sliding sleeve; 14, top head; 15, limiting open slot; 16, handle. DETAILED DESCRIPTION

[0014] Please refer to Figures 1-2The utility model provides a high-precision rotatable auxiliary support device, including rotating center frame body, still including the rotating body 5 of being established in rotating center frame body one side, four adjusting cavities 7 of being established in rotating body 5 and annular interval distribution, the clamping contact that is slidably fitted in adjusting cavity 7, clamping contact is connected with rotating body 5, clamping contact includes the flange cover 8 of being connected on the outer wall of rotating body 5 through screw, the lead screw 10 of being rotatably connected with flange cover 8 through bearing, the nut 11 and threaded sleeve 12 of being respectively located flange cover 8 both ends with lead screw 10 screw fit, the sliding sleeve 13 of being connected with threaded sleeve 12 one end and being sleeved in the outer wall of lead screw 10, the top head 14 of being connected in sliding sleeve 13 one end and being located lead screw 10 one end through the screw connection mode, the limiting open slot 15 of being established on the outer wall of sliding sleeve 13, the locking mechanism of being slidably fitted with limiting open slot 15 with rotating body 5 one side screw fit, the one end of nut 11 is abutted with the outside of flange cover 8, one end of flange cover 8 extends to the inside of adjusting cavity 7, threaded sleeve 12 is located in the inside of adjusting cavity 7, sliding sleeve 13 is slidably fitted with the inner wall of adjusting cavity 7, before workpiece processing, one end of workpiece is clamped by chuck on spindle box, and the other end is fixed by four clamping contacts on the device, this process is inserted into the rotating body 5 of the device, and enters the inside of rotating center frame body, before formal clamping and holding, through the operation of dialing and aligning, ensure that the center line of workpiece coincides with the center line of rotating center frame body and rotating body 5, so when the spindle box starts, can drive workpiece rotation, at the same time, rotating center frame body, rotating body 5 and the spindle of spindle box all keep synchronous rotation with rotating workpiece, when clamping contact clamps workpiece, specifically is through rotating lead screw 10 to drive the threaded sleeve 12 of being screw matched with displacement, further drive sliding sleeve 13 to move, the expansion of sliding sleeve 13 promotes the top head 14 of being connected with and presses workpiece, at the same time, the limiting open slot 15 on sliding sleeve 13 and locking mechanism form sliding fit, prevent unnecessary rotation of threaded sleeve 12 and sliding sleeve 13 in horizontal direction, when top head 14 tightens workpiece, through rotating locking mechanism, sliding sleeve 13 is locked in the inside of adjusting cavity 7, the device reduces the swing problem of contact part when workpiece support, thereby improves the processing precision and pass rate of product, and eliminates the common vibration phenomenon in high-precision deep hole machining process of deep hole drilling and boring machine industry, avoids the negative influence that these vibrations possibly produce to the machining precision of whole machine, not only provides strong support for the further development of deep hole drilling and boring machine industry, also lays a solid foundation for improving overall machining efficiency and product quality.

[0015] The locking mechanism comprises a handle 16 on one side of the rotating body 5, a locking screw 9 connected with one end of the handle 16, a limiting locking block 6 rotatably connected with one end of the locking screw 9, the limiting locking block 6 being slidably matched with a limiting opening slot 15, and the locking screw 9 being threadedly matched with the rotating body 5. During the extension and retraction movement of the sliding sleeve 13, the limiting locking block 6 is slidably matched with the limiting opening slot 15 designed on the sliding sleeve 13, so as to prevent the sliding sleeve 13 and the threaded sleeve 12 connected therewith from rotating in the horizontal direction. Once the workpiece is tightly pressed and fixed by the punch 14, the handle 16 is then rotated to drive the locking screw 9 to rotate and displace. With the movement of the locking screw 9, the limiting locking block 6 is abutted to the inside of the limiting opening slot 15, so as to complete the locking operation of the sliding sleeve 13. This locking mechanism not only limits the rotation of the sliding sleeve 13 and the threaded sleeve 12 in the horizontal direction, but also fixes the sliding sleeve 13, so as to ensure the stability and reliability of the whole clamping and locking process.

[0016] The rotating center frame body comprises a base 1, a center frame rotating sleeve 3 arranged on the base 1, a rotating cylindrical main shaft 4 rotatably connected in the center frame rotating sleeve 3, and a rotating body 5 connected with one end of the rotating cylindrical main shaft 4 and arranged on the same central axis.

[0017] The lower side of the base 1 is provided with two spaced-apart pressing plates 2. The base 1 is fixed on the machine tool bed by the two pressing plates 2, so as to fix the whole device and the machine tool.

[0018] Working principle: before workpiece machining, one end of the workpiece is clamped by the chuck on the spindle box, and the other end is fixed by the four clamping contacts on the device, the process is to pass the workpiece into the rotating body 5 of the device and into the rotating center frame body, before formal clamping and holding, through the dialing alignment operation, the center line of the workpiece is ensured to coincide with the center line of the rotating center frame body and the rotating body 5, so that when the spindle box starts, it can drive the workpiece to rotate, at the same time, the rotating center frame body, the rotating body 5 and the spindle of the spindle box are kept synchronous rotation with the rotating workpiece, when the clamping contact clamps the workpiece, the rotating screw 10 is used to drive the threaded sleeve 12 matched with it to displace, and then drive the sliding sleeve 13 to extend and retract, the extension and retraction of the sliding sleeve 13 promotes the top head 14 connected with it to press the workpiece, at the same time, in the process of extension and retraction of the sliding sleeve 13, the limiting locking block 6 and the limiting opening slot 15 designed on the sliding sleeve 13 realize sliding fit, prevent the sliding sleeve 13 and the threaded sleeve 12 connected with it from rotating in horizontal direction, once the workpiece is tightly pressed and fixed by the top head 14, then rotate the handle 16, drive the locking screw 9 to rotate and displace, with the movement of the locking screw 9, drive the limiting locking block 6 to abut to the inside of the limiting opening slot 15, so as to complete the locking operation of the sliding sleeve 13; the device reduces the swing problem of the contact part when supporting the workpiece, so as to improve the machining precision and qualified rate of the product, and eliminates the common vibration phenomenon in the process of high-precision deep hole machining in deep hole drilling and boring machine industry, avoids the negative influence of these vibrations on the machining precision of the whole machine, not only provides strong support for the further development of deep hole drilling and boring machine industry, but also lays a solid foundation for improving the overall machining efficiency and product quality.

[0019] The above is only the preferred embodiment of the present application, and is not used to limit the present application, any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A high-precision rotatable auxiliary support device comprising a rotation center stand body, characterized by, Also include set in the rotating center frame body one side of the rotating body (5), set in the rotating body (5) and annular spacing four adjusting cavity (7) arranged, sliding fit in the adjusting cavity (7) of the clamping contact, the clamping contact and rotating body (5) are connected;The clamping contact includes the flange cover (8) provided on the outer wall of the rotating body (5), the lead screw (10) connected with the flange cover (8) through the bearing rotation, the nut (11) and the threaded sleeve (12) respectively located at both ends of the flange cover (8) and threaded with the lead screw (10), the sliding sleeve (13) connected with one end of the threaded sleeve (12) and sleeved on the outer wall of the lead screw (10), the top head (14) provided on one end of the sliding sleeve (13) and located at one end of the lead screw (10), the limiting opening slot (15) provided on the outer wall of the sliding sleeve (13), the locking mechanism threaded with one side of the rotating body (5) and sliding fit with the limiting opening slot (15), one end of the nut (11) abuts with the outside of the flange cover (8), one end of the flange cover (8) extends to the inside of the adjusting cavity (7), the threaded sleeve (12) is located in the inside of the adjusting cavity (7), the sliding sleeve (13) and the inner wall of the adjusting cavity (7) are slidingly connected.

2. A high precision rotatable auxiliary support device as claimed in claim 1, characterized in that The locking mechanism includes a handle (16) located on one side of the rotating body (5), a locking screw (9) connected with one end of the handle (16), and a limiting locking block (6) rotationally connected with one end of the locking screw (9), the limiting locking block (6) is slidingly connected with the limiting opening slot (15), and the locking screw (9) is threaded with the rotating body (5).

3. A high precision rotatable auxiliary support device as claimed in claim 1, characterized in that, The rotating center frame body includes a base (1), a center frame rotating sleeve (3) provided on the base (1), and a rotating cylindrical main shaft (4) rotationally connected in the center frame rotating sleeve (3), the rotating body (5) is connected with one end of the rotating cylindrical main shaft (4) and arranged on the same central axis.

4. A high precision rotatable auxiliary support device as claimed in claim 3, characterized in that The lower side of the base (1) is provided with two spaced apart pressing plates (2).

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