Drill rod supporting device of deep hole drilling and boring machine

Abstract

The invention discloses a drill rod supporting device of a deep hole drilling and boring machine, which is used for supporting a drill rod and comprises a supporting seat and a drill rod supporting device, the transmission sleeve is rotatably arranged in the supporting seat; the supporting sleeve and the locking check ring are coaxially arranged in the transmission sleeve in a linkage mode, the supporting sleeve can deform under the action of external force, and the supporting sleeve is used for being connected with a drill rod in a sleeved mode; the buffering assembly is coaxially arranged in the transmission sleeve in a linkage mode, the buffering assembly is arranged between the supporting sleeve and the locking check ring, and the buffering assembly has elasticity and can stretch out and draw back under the action of external force. When the drill rod is assembled, stable supporting is provided, meanwhile, a loosening space is provided when the drill rod retreats, locking is avoided, the service life is guaranteed, meanwhile, assembling and using are facilitated, and the operation difficulty is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of machine tool accessories, and in particular to a drill rod supporting device of a deep hole drilling and boring machine used for deep hole processing. Background Art

[0002] The support structure of the drill pipe is a key component required in the deep hole drilling process, such as a drill pipe vibration reduction device disclosed in Patent No. CN206028805U, which includes a support sleeve, a flange cover, a sleeve, an adjusting nut, a vibration reduction sleeve, a bearing and a sealing ring, wherein the bearing is installed on the outer circle at both ends of the sleeve, and the bearing is further installed in the inner hole of the support sleeve, the outer circle of the bearing matches the inner hole of the support sleeve, threaded holes are arranged at both ends of the support sleeve, two flange covers are respectively fixed at both ends of the support sleeve, the flange cover contacts the outer ring of the bearing, the sealing ring is installed in the inner cavity of the flange cover, the vibration reduction sleeve and the adjusting nut are sequentially installed in the inner hole of the sleeve, and the end face of the vibration reduction sleeve contacts the end face of the adjusting nut.

[0003] In this device, when the adjustment nut is locked, the gap can only be adjusted by the operator's feel. If the locking force is too large, the middle vibration damping sleeve will completely lock with the tool rod, and the tool rod will crawl when performing linear feed motion, which greatly reduces the stability during processing. When the tool rod is retracted, the taper direction of the vibration damping sleeve is forward, and it is very easy to lock with the tool rod in the reverse direction when retracting, thereby causing torque overload of the Z-axis servo motor and reducing the service life of the machine tool. Summary of the invention

[0004] The present invention aims to avoid the deficiencies of the prior art and provides a drill rod supporting device for a deep hole boring machine which is easy to install, provides buffering and shock absorption, and is convenient for withdrawing the rod.

[0005] The present invention solves the technical problem by adopting the following technical solution: a drill rod support device for a deep hole drilling and boring machine, used to support the drill rod, comprising:

[0006] Support seat;

[0007] A transmission sleeve rotatably disposed in the support seat;

[0008] A support sleeve and a locking retaining ring are coaxially and linkedly arranged in the transmission sleeve, wherein the support sleeve can be deformed under the action of external force, and the support sleeve is used to sleeve the drill pipe;

[0009] A buffer component is coaxially and linkedly arranged in the transmission sleeve, wherein the buffer component is arranged between the support sleeve and the locking retaining ring, and the buffer component is elastic and can be extended and retracted under the action of external force.

[0010] In several embodiments, the buffer assembly includes a first pressure ring, a second pressure ring and an elastic member, and the plurality of elastic members are arranged between the first pressure ring and the second pressure ring. One end of the first pressure ring abuts against the support sleeve, and one end of the second pressure ring abuts against the locking retaining ring.

[0011] In several embodiments, at least one guide shaft is disposed on the second pressure ring, and at least one guide hole is disposed on the first pressure ring. The guide shaft can move along the guide hole, and the guide shaft is disposed parallel to the axis of the second pressure ring.

[0012] In several embodiments, the guide shaft is connected to the second pressure ring via a first locking member.

[0013] In several embodiments, a bearing seat is provided in the support seat at one end away from the locking retaining ring, a first bearing is provided between the bearing seat and the transmission sleeve, and a second bearing is provided between the transmission sleeve and the support seat.

[0014] In several embodiments, a bearing retaining ring is disposed on the bearing seat, and the support sleeve abuts between the bearing retaining ring and the first pressure ring.

[0015] In several embodiments, a sealing nut is disposed in the support seat, and the sealing nut is screwed onto the transmission sleeve. A locking nut is also screwed onto the transmission sleeve, and the locking nut can abut against the sealing nut.

[0016] In several embodiments, the locking ring is threadably matched with the transmission sleeve, a deformation hole is radially arranged inside the locking ring, and at least one second locking member penetrates the locking ring axially and passes through the deformation hole.

[0017] In several embodiments, a front retaining ring is provided on the front side of the bearing seat, and the front retaining ring is fixedly connected to the bearing seat via a third locking member.

[0018] In several embodiments, when the drill rod is inserted forward from one side of the locking ring, the support sleeve is forced to contract and clamp the drill rod, and when the drill rod is withdrawn backward, the buffer assembly contracts and the support sleeve relaxes to loosen the drill rod.

[0019] The beneficial effects of the present invention are:

[0020] The present invention greatly reduces the machining vibration generated by the rotation of the tool bar and the linear feed motion when machining deep holes through the buffer component, which not only improves the accuracy of the deep hole machining and the rough surface, but also reduces the influence on the accuracy of the machine tool body caused by the vibration.

[0021] The invention is easy to assemble and use, does not require sufficient experience to adjust the locking gap, and reduces the skill level requirements of workers.

[0022] The present invention provides stable support when the drill rod is assembled through the structure of the buffer assembly, and provides a loosening space when the drill rod is withdrawn, thereby avoiding locking and ensuring the service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The drawings described herein are for illustrative purposes only of selected embodiments and do not represent all possible implementations, and should not be considered to limit the scope of the present invention.

[0024] Figure 1 The side view structure of the drill rod supporting device of the deep hole drilling and boring machine in Example 1 is schematically shown;

[0025] Figure 2 Schematically shows Figure 1 The cross-sectional structure in the middle AA direction;

[0026] Figure 3 Schematically shows Figure 2 The enlarged structure of the middle A part;

[0027] Figure 4 Schematically shows Figure 1 Side view structure. DETAILED DESCRIPTION

[0028] Below, embodiments of the present invention are described in detail with reference to the accompanying drawings. To make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying 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.

[0029] Therefore, the following detailed description of the embodiments of the present invention provided in conjunction with the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. All other embodiments obtained by ordinary technicians in the field based on the embodiments of the present invention without making any creative work are within the scope of protection of the present invention.

[0030] Example 1

[0031] As Figure 1-Figure 4 As shown, the drill rod supporting device of the deep hole drilling and boring machine in this embodiment is used to support the drill rod, and mainly includes a supporting seat 10, a transmission sleeve 20 rotatably arranged in the supporting seat 10, a supporting sleeve 30 and a locking retaining ring 40 coaxially and linkedly arranged in the transmission sleeve 20, a buffer assembly 50 coaxially and linkedly arranged in the transmission sleeve 20, a bearing seat 60 coaxially arranged on the supporting seat 10, a bearing retaining ring 70, a sealing nut 81, a locking nut 82, and a front retaining ring 90.

[0032] Among them, the support sleeve 30 is made of flexible material and has openings on the surface. The support sleeve 30 can be deformed under the action of external force. The support sleeve 30 is used to socket the drill pipe. The buffer assembly 50 is arranged between the support sleeve 30 and the locking retaining ring 40. The buffer assembly 50 is elastic and can be retracted and contracted under the action of external force.

[0033] Among them, the locking retaining ring 40 is threadedly matched with the transmission sleeve 20, and a deformation hole is arranged in the inner radial direction of the locking retaining ring 40. At least one second locking member 102 is inserted into the locking retaining ring 40 from the axial direction and passes through the deformation hole. The second locking member 102 can be a bolt. After the bolt is screwed in, the deformation hole is deformed, so that the external thread on the locking retaining ring 40 is also deformed, and locked.

[0034] Specifically, the buffer assembly 50 includes a first pressure ring 51, a second pressure ring 52 and an elastic member 53. The elastic member 53 is a spring structure. The first pressure ring 51 and the second pressure ring 52 are circular ring structures. A plurality of the elastic members 53 are arranged between the first pressure ring 51 and the second pressure ring 52. One end of the first pressure ring 51 abuts against the support sleeve 30, and one end of the second pressure ring 52 abuts against the locking retaining ring 40. The second pressure ring 52 is provided with at least one guide shaft 54. The first pressure ring 51 is provided with at least one guide hole 511. The guide shaft 54 ​​can move along the guide hole 511. The guide shaft 54 ​​is arranged parallel to the axis of the second pressure ring 52, and the guide shaft 54 ​​is connected to the second pressure ring 52 through the first locking member 101. The first locking member 101 can be bolted. Thus, the movement guidance between the first pressure ring 51 and the second pressure ring 52 is realized through the guide shaft 54 ​​and the guide hole 511.

[0035] Among them, the bearing seat 60 is threadedly screwed on one end of the support seat 10 away from the locking ring 40, a first bearing 61 is arranged between the bearing seat 60 and the transmission sleeve 20, a second bearing 62 is arranged between the transmission sleeve 20 and the support seat 10, and a bearing retaining ring 70 is arranged on the bearing seat 60, and the support sleeve 30 is abutted between the bearing retaining ring 70 and the first pressure ring 51.

[0036] In addition, the front retaining ring 90 is arranged on the front side of the bearing seat 60, and the front retaining ring 90 and the bearing seat 60 are fixedly connected by a third locking member 103. The third locking member 103 can be a bolt. At the same time, a groove can be made on the bearing seat 60, and the fourth locking member 104 can be screwed into the groove from the position of the front retaining ring 90, such as a bolt being screwed into the groove, so that the external thread on the bearing seat 60 is deformed, so that it cannot be loosened and shifted in the support seat 10 and is fixed.

[0037] In addition, a sealing nut 81 is provided in the support seat 10, and the sealing nut 81 is screwed on the transmission sleeve 20. A locking nut 82 is also screwed on the transmission sleeve 20, and the locking nut 82 can abut against the sealing nut 81. Through the cooperation of the sealing nut 81 and the locking nut 82, the bearings at the corresponding positions inside are sealed, which prevents impurities and dirt from entering the bearings and limits the position of the bearings.

[0038] When assembling the present invention, the transmission sleeve 20, the support sleeve 30, the buffer assembly 50, the locking retaining ring 40, the bearing seat 60, the bearing retaining ring 70, the sealing nut 81, the locking nut 82, the front retaining ring 90 and the like are assembled to the support seat 10, the locking retaining ring 40 is rotated to squeeze the buffer assembly 50 until the spring is deformed, the support sleeve 30 is abutted and fixed, and then the second locking member 102 is screwed in to lock the position of the locking retaining ring 40, when the drill rod is inserted forward from one side of the locking retaining ring 40, the support sleeve 30 is forced to contract and clamp the drill rod, and when the drill rod is withdrawn backward, the support sleeve 30 will drive the first pressure ring 51 to overcome the elastic force of the spring and move backward, so that the buffer assembly 50 is contracted, and the space given to the support sleeve 30 is increased, and the support sleeve 30 is thereby relaxed and expanded to loosen the drill rod.

[0039] All the methods described herein can be performed in any suitable order. Any and all examples used, or exemplary language (such as "for example") provided herein are merely to better illustrate the present invention and are not intended to limit the scope of the present invention, unless the claims are included. The language in the detailed description should not be construed as indicating any essential factors for practicing the present invention that are not claimed.

[0040] The present invention describes preferred embodiments, including the best mode of carrying out the invention known to the inventors. Of course, variations of these preferred embodiments will be apparent to those skilled in the art. The inventors anticipate that the skilled artisan may use such variations as appropriate, and the inventors indicate that the present invention may be implemented in other ways than those specifically described herein. Therefore, the present invention includes all modifications encompassed by the spirit and scope of the invention as defined by the claims. Furthermore, unless otherwise stated or clearly contradictory in context, the present invention includes any of the above-described factors and all possible variations thereof.

Claims

1. A drill rod support device for a deep hole drilling and boring machine, used to support the drill rod, characterized in that: include: Support seat (10); A transmission sleeve (20) rotatably arranged in the support seat (10); A support sleeve (30) and a locking retaining ring (40) are coaxially and linkedly arranged in the transmission sleeve (20), wherein the support sleeve (30) can be deformed under the action of an external force, and the support sleeve (30) is used to sleeve the drill pipe; A buffer component (50) is coaxially and linkedly arranged in the transmission sleeve (20), wherein the buffer component (50) is arranged between the support sleeve (30) and the locking retaining ring (40), and the buffer component (50) is elastic and can be extended and retracted under the action of an external force.

2. The drill rod support device of a deep hole boring machine according to claim 1, characterized in that: The buffer assembly (50) comprises a first pressure ring (51), a second pressure ring (52) and an elastic member (53), wherein a plurality of the elastic members (53) are arranged between the first pressure ring (51) and the second pressure ring (52), wherein one end of the first pressure ring (51) abuts against the support sleeve (30), and one end of the second pressure ring (52) abuts against the locking retaining ring (40).

3. The drill rod support device of a deep hole boring machine according to claim 2, characterized in that: At least one guide shaft (54) is arranged on the second pressure ring (52), and at least one guide hole (511) is arranged on the first pressure ring (51). The guide shaft (54) can move along the guide hole (511), and the guide shaft (54) is arranged parallel to the axis of the second pressure ring (52).

4. The drill rod support device of a deep hole boring machine according to claim 3, characterized in that: The guide shaft (54) is connected to the second pressure ring (52) via a first locking member (101).

5. The drill rod support device of a deep hole boring machine according to claim 2, characterized in that: A bearing seat (60) is arranged at one end of the support seat (10) away from the locking retaining ring (40), a first bearing (61) is arranged between the bearing seat (60) and the transmission sleeve (20), and a second bearing (62) is arranged between the transmission sleeve (20) and the support seat (10).

6. The drill rod support device of a deep hole boring machine according to claim 5, characterized in that: A bearing retaining ring (70) is arranged on the bearing seat (60), and the support sleeve (30) is abutted between the bearing retaining ring (70) and the first pressure ring (51).

7. The drill rod support device of a deep hole boring machine according to claim 1, characterized in that: A sealing nut (81) is arranged in the support seat (10), and the sealing nut (81) is screwed onto the transmission sleeve (20). A locking nut (82) is also screwed onto the transmission sleeve (20), and the locking nut (82) can abut against the sealing nut (81).

8. The drill rod support device of a deep hole boring machine according to claim 1, characterized in that: The locking retaining ring (40) is threadedly matched with the transmission sleeve (20), a deformation hole is radially arranged inside the locking retaining ring (40), and at least one second locking member (102) penetrates the locking retaining ring (40) from the axial direction and passes through the deformation hole.

9. The drill rod support device of a deep hole boring machine according to claim 5, characterized in that: A front retaining ring (90) is provided on the front side of the bearing seat (60), and the front retaining ring (90) and the bearing seat (60) are fixedly connected via a third locking member (103).

10. The drill rod support device of a deep hole boring machine according to claim 1, characterized in that: When the drill rod is inserted forward from one side of the locking retaining ring (40), the support sleeve (30) is forced to contract and clamp the drill rod; when the drill rod is withdrawn backward, the buffer assembly (50) contracts and the support sleeve (30) is relaxed to loosen the drill rod.

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