CN214350921U

CN214350921U - Anti-loosening cutter bar group

Info

Publication number: CN214350921U
Application number: CN202120231116.1U
Authority: CN
Inventors: 陈本泓
Original assignee: Zhangzhou Shengyuan Machinery Industrial Co ltd
Current assignee: Zhangzhou Shengyuan Machinery Industrial Co ltd
Priority date: 2021-01-27
Filing date: 2021-01-27
Publication date: 2021-10-08
Anticipated expiration: 2031-01-27

Abstract

The utility model discloses an anti-loose cutter bar group, which comprises a cutter bar body, a bearing ring, a cutter, a packing nut and an elastic ring, wherein a clamping hole is arranged inside the cutter bar body; the bearing ring is sleeved on the outer peripheral surface of the cutter bar body, which is provided with the clamping hole; one end of the cutter is arranged in the clamping hole of the cutter bar body; the packing nut is sleeved outside the bearing ring; one side of the elastic ring is abutted against the cutter bar body, the other side of the elastic ring is abutted against the packing nut, the elastic ring is provided with at least two grooves, each groove penetrates through the elastic ring, and the at least two grooves are provided with overlapped parts in the axial direction of the elastic ring, so that the elastic ring can deform along the axial direction of the elastic ring, and a thrust is applied to the cutter bar body and the packing nut respectively. Compared with the prior art, the utility model discloses can prevent effectively that the cutter pine from taking off, be favorable to keeping the machining precision of cutter.

Description

Anti-loosening cutter bar group

Technical Field

The utility model relates to a cutter arbor group field, concretely relates to locking release cutter arbor group.

Background

The conventional straight collet tool bar set mainly comprises a tool bar body, a bearing ring, a tool and a packing nut. The bearing ring is sleeved on the outer peripheral surface of the cutter bar body. The cutter extends into the cutter bar body and is surrounded by the bearing ring. The tightening nut is sleeved outside the bearing ring, when the tightening nut is screwed on the bearing ring, the tightening nut clamps the cutter bar body through the bearing ring, and the cutter bar body clamps the cutter.

However, when the conventional straight collet knife bar set is used, the clamping nut is loosened relative to the bearing ring, and if the clamping nut is loosened relative to the bearing ring, the knife cannot be clamped and loosened. Therefore, the machining precision of the workpiece by the conventional straight collet tool bar assembly is reduced. In view of the above, the applicant has made an intensive study to solve the above problems and has made the present invention.

SUMMERY OF THE UTILITY MODEL

The main object of the utility model is to provide an anti-loosening cutter bar group, which has the characteristic of good anti-loosening effect.

In order to achieve the above purpose, the solution of the present invention is:

a looseness-proof cutter bar group comprises a cutter bar body, a bearing ring, a cutter, a packing nut and an elastic ring, wherein a clamping hole is formed in the cutter bar body; the bearing ring is sleeved on the outer peripheral surface of the cutter bar body, which is provided with the clamping hole; one end of the cutter is arranged in the clamping hole of the cutter bar body; the packing nut is sleeved outside the bearing ring;

one side of the elastic ring is abutted against the cutter bar body, the other side of the elastic ring is abutted against the packing nut, the elastic ring is provided with at least two grooves, each groove penetrates through the elastic ring, and the at least two grooves are provided with overlapped parts in the axial direction of the elastic ring, so that the elastic ring can deform along the axial direction of the elastic ring, and a thrust is applied to the cutter bar body and the packing nut respectively.

Furthermore, each groove of the elastic ring is provided with two telescopic grooves and a telescopic groove, the two telescopic grooves of each groove are arranged at two ends of the telescopic groove and are communicated with the telescopic groove, and the width of the telescopic groove in the axial direction of the elastic ring is smaller than that of each telescopic groove in the axial direction of the elastic ring.

Further, each of the expansion grooves of each of the grooves and the expansion groove of the other groove have an overlapping portion in the axial direction of the elastic ring.

Furthermore, the extending direction of each groove of the elastic ring is parallel to two sides of the elastic ring along the length direction.

Further, the cutter arbor body is equipped with the relay segment, the middle-section portion of cutter arbor body is located to the relay segment, the relay segment is equipped with and leans on the flange, lean on the protruding outer peripheral face of locating the relay segment of flange annular, one side of elastic ring leans on in the cutter arbor body to lean on the flange.

Further, the width of the elastic ring is larger than the distance between the abutting flange of the tightening nut and the cutter bar body.

After the structure of the oil adding device is adopted, the utility model relates to a locking cutter arbor group that takes off compares with prior art, the utility model has the following beneficial effect, through add the elastic ring between cutter arbor body and compel tight nut, when compeling tight nut and cutter arbor body to support mutually and lean on, the elastic ring can warp in its axial, and then applys a thrust respectively to cutter arbor body and compel tight nut, when the elastic ring applys a thrust to compeling tight nut, compel tight nut to be difficult for the relative bearing ring rotation. Therefore, the problem that in the conventional straight collet cutter bar set, when the packing nut is loosened relative to the bearing ring, the cutter cannot be tightly pressed, and the machining precision of the workpiece is reduced by the conventional straight collet cutter bar set is solved. Therefore, the novel anti-loosening cutter bar group has the beneficial effect of maintaining the machining precision.

Drawings

Fig. 1 is a perspective view of the present invention.

Fig. 2 is a perspective sectional view of a quarter of the present invention.

Fig. 3 is a schematic exploded perspective view of the present invention.

Fig. 4 is a schematic perspective view of the elastic ring of the present invention.

Fig. 5 is a top view of the elastic ring of the present invention.

Fig. 6 is a cross-sectional side view of the present invention.

Fig. 7 is a partially enlarged cross-sectional view of fig. 6.

Fig. 8 is a side view of the present invention without the elastic ring.

In the figure:

a cutter bar body-10; binding segment-11; a conical section-12; a clamping hole-121;

hop-13; against the flange-131; a bearing ring-20; needle roller-21;

a cutter-30; a packing nut-40; an elastic ring-50; grooving-51; a telescopic groove-511;

a telescoping trench-512; distance-W1; width-W2; centerline-C.

Detailed Description

In order to further explain the technical solution of the present invention, the present invention is explained in detail by the following embodiments.

As shown in fig. 1-8, the new anti-loose tool bar set as shown in fig. 1, 2, 3 and 6 comprises a tool bar body 10, a bearing ring 20, a tool 30, a clamping nut 40 and an elastic ring 50, wherein:

as shown in fig. 2, 3 and 6, the tool body 10 has a coupling section 11, a tapered section 12 and a middle section 13. The combining section 11 is disposed at one end of the tool bar body 10, and the combining section 11 is used for combining with a spindle of a processing machine. The taper section 12 is arranged at one end of the cutter bar body 10 far away from the combining section 11, the taper section 12 is in a gradually expanding shape from the direction far away from the combining section 11 to the direction close to the combining section 11, and a clamping hole 121 is arranged inside the taper section 12. The middle section 13 connects the combining section 11 and the tapered section 12, and is provided with an abutting flange 131, and the abutting flange 131 is annularly and convexly arranged on the outer peripheral surface of the middle section 13.

Preferably, as shown in fig. 2, 3 and 6, the bearing ring 20 is sleeved on the outer circumferential surface of the tapered section 12 of the tool holder body 10, and the bearing ring 20 is provided with a plurality of roller pins 21, each roller pin 21 is capable of rotating relative to the bearing ring 20, and an axial extending direction of each roller pin 21 forms an included angle with an axial extending direction of the bearing ring 20.

Preferably, as shown in fig. 2, 3 and 6, one end of the cutter 30 is disposed in the clamping hole 121 of the tapered section 12 of the tool holder body 10.

Preferably, as shown in fig. 2, 3 and 6, the clamping nut 40 is sleeved outside the bearing ring 20, so that each of the roller pins 21 of the bearing ring 20 abuts against the tapered section 12 of the tool holder body 10 and the clamping nut 40. Due to the fact that the axial extension direction of the needle rollers 21 of the bearing ring 20 forms an included angle with the axial extension direction of the bearing ring 20, and the needle rollers 21 can rotate relative to the bearing ring 20, when a user rotates the clamping nut 40 in different directions, the clamping nut 40 can move towards the direction adjacent to the joint section 11 of the tool holder body 10 or move away from the joint section 11 of the tool holder body 10, when the clamping nut 40 moves towards the direction adjacent to the joint section 11 of the tool holder body 10, due to the fact that the tapered section 12 is gradually expanded towards the direction close to the joint section 11 from the direction away from the joint section 11, the clamping nut 40 can clamp the tapered section 12 through the bearing ring 20, and the clamping hole 121 of the tapered section 12 can clamp the tool 30. As shown in fig. 8, when the clamping nut 40 is sleeved outside the bearing ring 20, the distance between the clamping nut 40 and the abutting flange 131 of the middle section 13 of the tool shank body 10 is W1.

Preferably, as shown in fig. 4 to 7, the elastic ring 50 is located between the abutting flange 131 of the middle section 13 of the tool holder body 10 and the clamping nut 40, and is sleeved outside the tool holder body 10 and the clamping nut 40, so that one side of the elastic ring 50 abuts against the middle section 13 of the tool holder body 10, and the other side abuts against the clamping nut 40. The elastic ring 50 has a width W2 and at least two grooves 51, as shown in fig. 8, the width W2 of the elastic ring 50 is greater than the distance W1 between the clamping nut 40 and the abutting flange 131 of the tool holder body 10 (W2> W1), the at least two grooves 51 are arranged at intervals, each groove 51 penetrates through the elastic ring 50 and is provided with two telescopic grooves 511 and a telescopic groove 512, and the two telescopic grooves 511 of each groove 51 are arranged at two ends of the telescopic groove 512 and are communicated with the telescopic groove 512. As shown in fig. 5, each of the expansion grooves 511 and the expansion groove 512 of the other groove 51 have an overlapping portion in the axial direction of the elastic ring 50, that is, each of the grooves 51 must extend to a position beyond a center line C of the elastic ring 50. By providing the at least two grooves 51 on the elastic ring 50, the elastic ring 50 can be deformed in the axial direction. Further, the width of each expansion slot 511 in the axial direction of the elastic ring 50 is greater than the width of the expansion groove 512 in the axial direction of the elastic ring 50, so that the elastic ring 50 can generate a larger deformation amount in the axial direction.

Preferably, the extension direction of the extension groove 512 of each groove 51 is parallel to both sides of the elastic ring 50 in the longitudinal direction. Therefore, when the elastic ring 50 is deformed in the axial direction, the vector direction of the generated restoring force extends in the axial direction of the elastic ring 50.

Preferably, as shown in fig. 5 to 7, when the novel anti-loose tool bar set is used, the tool 30 is firstly inserted into the clamping hole 121 of the tapered section 12 of the tool bar body 10, then the tightening nut 40 is rotated to move the tightening nut 40 toward the direction adjacent to the joint section 11 of the tool bar body 10, the cutter 30 can be gradually tightened, when the tightening nut 40 abuts against the end face of the middle section 13 of the cutter bar body 10, due to the distance W1 between the packing nut 40 and the abutment flange 131 of the intermediate section 13 of the toolholder body 10, the resilient ring 50 having a width W2 greater than the distance W1 is compressed, and deforms along the axial direction of the elastic ring 50, and applies a pushing force to the tool bar body 10 and the packing nut 40 respectively, when the elastic ring 50 exerts a pushing force on the clamping nut 40, the clamping nut 40 is not easy to rotate relative to the bearing ring 20.

Through adopting the technical scheme of the utility model, this novel locking release cutter arbor group obtains beneficial effect has: by additionally arranging the elastic ring 50 between the cutter bar body 10 and the packing nut 40, when the packing nut 40 abuts against the cutter bar body 10, the elastic ring 50 can deform in the axial direction, so as to respectively apply a thrust to the cutter bar body 10 and the packing nut 40, and when the elastic ring 50 applies a thrust to the packing nut 40, the packing nut 40 is not easy to rotate relative to the bearing ring 20. So just can solve among the current straight collet chuck cutter arbor group, it is relative to compel tight nut when the bearing ring pine takes off, the cutter can't be compeled to tight and produce and take off, and then leads to the problem that the machining precision of current straight collet chuck cutter arbor group to work piece descends, consequently, this novel locking cutter arbor group that takes off has the favourable effect that can maintain machining precision.

The above embodiments and drawings are not intended to limit the form and style of the present invention, and any suitable changes or modifications made by those skilled in the art should not be construed as departing from the scope of the present invention.

Claims

1. An anti-loosening cutter bar group is characterized by comprising a cutter bar body, a bearing ring, a cutter, a packing nut and an elastic ring, wherein a clamping hole is formed in the cutter bar body; the bearing ring is sleeved on the outer peripheral surface of the cutter bar body, which is provided with the clamping hole; one end of the cutter is arranged in the clamping hole of the cutter bar body; the packing nut is sleeved outside the bearing ring;

2. The anti-loosening blade bar assembly as claimed in claim 1, wherein each groove of the elastic ring has two slots and a slot, the two slots of each groove are disposed at two ends of the slot and communicate with the slot, and the width of the slot in the axial direction of the elastic ring is smaller than the width of the slots in the axial direction of the elastic ring.

3. The anti-loosening blade bar assembly as claimed in claim 2, wherein each of the expansion grooves of each of the grooves has an overlapping portion with the expansion groove of the other groove in the axial direction of the elastic ring.

4. The anti-loosening blade bar assembly as claimed in any one of claims 1 to 3, wherein the grooves of the elastic ring extend in parallel with both sides of the elastic ring in the longitudinal direction.

5. The anti-loosening cutter bar set according to any one of claims 1 to 3, wherein the cutter bar body is provided with a middle section, the middle section is arranged at the middle section part of the cutter bar body, the middle section is provided with an abutting flange, the abutting flange is annularly and convexly arranged on the outer peripheral surface of the middle section, and one side of the elastic ring abuts against the abutting flange of the cutter bar body.

6. The anti-loosening tool bar set as claimed in claim 5, wherein the width of the elastic ring is larger than the distance between the clamping nut and the abutting flange of the tool bar body.