Drill bit for processing water chestnut seat of circular knitting machine

Abstract

The utility model discloses a circular knitting machine corner seat processing drill bit, which belongs to the field of drill bits, and comprises a base body, a first drilling body and a second drilling body, a first inner cooling channel is arranged at the upper part in the base body, and two second inner cooling channels are arranged in the base body below the first inner cooling channel; the bottom of each second inner cooling channel communicates with a third inner cooling channel, the inner diameter of a top end opening of the first inner cooling channel is larger than that of a bottom end opening of the first inner cooling channel, and the inner diameter of a top end opening of the second inner cooling channel is larger than that of a bottom end opening of the second inner cooling channel. The inner diameter of the top opening of the third inner cooling channel is larger than that of the bottom opening of the third inner cooling channel. The inner diameter of the first inner cooling channel, the inner diameter of the second inner cooling channel and the inner diameter of the third inner cooling channel are arranged, the flow speed of cooling liquid can be increased at each section, the cooling liquid can be rapidly discharged, heat can be rapidly taken away, and the cooling effect is good.

Description

Technical Field

[0001] The utility model belongs to the field of drill bits, in particular to a drill bit for machining diamond-corner seats of large circular machines. Background Art

[0002] The circular knitting machine's saddle, also known as the saddle, is a key component for placing the saddle. During the operation of the circular knitting machine, the saddle controls the knitting needles and sinkers to reciprocate in the needle cylinder groove according to the different needs of the knitting varieties, so as to achieve the knitting of different fabrics and textures.

[0003] When processing the diamond-shaped seat of a large circular machine, the processing of the screw hole requires the use of a fixed-point drill, a φ10.0 drill bit, a φ16 end mill and a chamfering cutter. Since there are many diamond-shaped seats on a large circular machine, it takes a lot of time to process. In addition, high temperatures will be generated during the processing, which will affect the diamond-shaped seat and drill bit of the large circular machine, affecting the processing quality and the service life of the drill bit. Utility Model Content

[0004] The utility model aims to provide a drill bit for machining diamond-corner seats of a large circular machine, so as to overcome at least one of the above-mentioned defects in the prior art.

[0005] To achieve this purpose, the utility model adopts the following technical solutions:

[0006] The utility model provides a large circular machine diamond seat processing drill bit, comprising a base, a first drilling body, and a second drilling body, the base is provided with the first drilling body at the bottom, the second drilling body is provided with the second drilling body at the bottom, the diameter of the first drilling body is larger than the diameter of the second drilling body, the bottom of the second drilling body is provided with two grooves, a first inner cooling channel is provided above the base, two second inner cooling channels are provided inside the base below the first inner cooling channel, the two second inner cooling channels are respectively connected to the left and right sides of the bottom of the first inner cooling channel, and the bottom of each second inner cooling channel is connected to a third inner cooling channel, the third inner cooling channel sequentially penetrates the first drilling body and the second drilling body from the base, and is connected to the groove, the inner diameter of the top opening of the first inner cooling channel is larger than the inner diameter of the bottom opening of the first inner cooling channel, and is consistent with the inner diameter of the bottom opening of the first inner cooling channel, the inner diameter of the top opening of the second inner cooling channel is larger than the inner diameter of the bottom opening of the second inner cooling channel, the inner diameter of the top opening of the third inner cooling channel is larger than the inner diameter of the bottom opening of the third inner cooling channel, and is consistent with the inner diameter of the bottom opening of the second inner cooling channel.

[0007] Preferably, the first internal cooling channel includes a first hole and a second hole, the first hole is connected to the bottom of the second hole, the inner diameter of the first hole decreases from top to bottom, the inner diameter of the second hole decreases from top to bottom, the inner diameter of the second internal cooling channel decreases from top to bottom, and the inner diameter of the third internal cooling channel decreases from top to bottom.

[0008] Preferably, a chip removal groove is provided on the outer side of the groove, the chip removal groove passes through the first drilling body upward from the second drilling body and extends to the lower part of the base body, the chip removal groove is communicated with the groove, and the chip removal groove is spirally arranged.

[0009] Preferably, the base body and the first drilling body are integrally formed, and the first drilling body and the second drilling body are integrally formed or connected in a split manner.

[0010] Preferably, the diameter of the base is 20 mm, the height of the base is 47.5 mm, the diameter of the first drilling body is 16 mm, the height of the first drilling body is 7.5 mm, the diameter of the second drilling body is 10 mm, and the height of the second drilling body is 25.0 mm.

[0011] Preferably, the drill point angle of the second drilling body is 90°.

[0012] Preferably, the top of the first drilling body has a first chamfered cutting edge, and the top of the second drilling body has a second chamfered cutting edge.

[0013] Preferably, a plurality of fourth inner cooling channels are provided between the third inner cooling channel and the chip removal groove.

[0014] Preferably, the first drilling body is detachably connected to the second drilling body.

[0015] Preferably, a plurality of slots are provided at the bottom of the first drilling body, and arc-shaped slots are connected on both sides of the slots. A clamping block is fixed on the top of the second drilling body, and arc-shaped spring pieces are fixed on both sides of the clamping block. The clamping block cooperates with the slots, and the arc-shaped spring pieces cooperate with the arc-shaped slots.

[0016] The beneficial effects of the utility model are:

[0017] 1. Through the setting of the first drilling body and the second drilling body with different diameters, the required holes for the diamond-shaped seat of the large circular machine can be processed at one time, which greatly shortens the processing time; the inner diameter setting of the first inner cooling channel, the second inner cooling channel, and the third inner cooling channel can increase the flow rate of the coolant in each section, which is more conducive to the rapid discharge of the coolant, quickly taking away the heat, and having a good cooling effect.

[0018] 2. The channel is divided into two, so that the coolant and the drill bit are in more comprehensive contact, improving the cooling effect.

[0019] 3. By setting the first hole and the second hole with decreasing inner diameters, a two-stage acceleration effect is achieved in the first inner cooling channel.

[0020] 4. Further acceleration after diversion is achieved through the second inner cooling channel with decreasing inner diameter, and the coolant discharge speed is further increased through the third inner cooling channel with decreasing inner diameter.

[0021] 5. The spiral chip groove can make the waste chips escape quickly, avoiding the influence of processing caused by the accumulation of waste chips.

[0022] 6. By setting the first chamfering cutting edge and the second chamfering cutting edge, the chamfering operation on the hole end face can be completed in one processing process, thus shortening the processing time.

[0023] 7. The fourth inner cooling channel connected to the chip groove not only further improves the heat exchange between the coolant and the drill bit and the cooling effect, but also is more conducive to discharging the waste chips from the chip groove.

[0024] 8. The first drilling body and the second drilling body are fixed once by the cooperation of the clamping block and the clamping slot, and the first drilling body and the second drilling body are fixed twice by the cooperation of the arc-shaped spring piece and the arc-shaped slot, so that the connection between the first drilling body and the second drilling body is stable and easy to disassemble and assemble. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of the first embodiment of the utility model.

[0026] Figure 2 yes Figure 1 Schematic diagram of the enlarged structure of A.

[0027] Figure 3 It is a schematic diagram of the top structure of the first embodiment of the utility model.

[0028] Figure 4 yes Figure 3 Schematic diagram of the cross-sectional structure along the AA axis.

[0029] Figure 5 yes Figure 4 Schematic diagram of the enlarged structure of B.

[0030] Figure 6 It is a bottom view structural schematic diagram of the first embodiment of the utility model.

[0031] Figure 7 It is a structural schematic diagram of the second embodiment of the present utility model.

[0032] Figure 8 It is a partial cross-sectional structural schematic diagram of the third embodiment of the present utility model.

[0033] Fig. 9 It is a partial cross-sectional structural schematic diagram of the first drilling body of the third embodiment of the utility model.

[0034] The markings in the accompanying drawings are: 1-base, 2-first drilling body, 3-second drilling body, 4-groove, 5-first internal cooling channel, 6-second internal cooling channel, 7-third internal cooling channel, 51-first hole, 52-second hole, 8-chip groove, 9-first chamfer cutting edge, 10-second chamfer cutting edge, 11-fourth internal cooling channel, 12-slot, 13-arc groove, 14-block, 15-arc-shaped spring piece. DETAILED DESCRIPTION

[0035] The utility model is now further described in conjunction with the accompanying drawings and specific implementation methods.

[0036] Contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field. In the description of the present utility model, it should be understood that the terms "center", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", "third" and the like are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0037] Embodiment 1:

[0038] like Figures 1 to 6As shown, a large circular machine diamond seat processing drill bit provided in this embodiment includes a base 1, a first drilling body 2, and a second drilling body 3. The first drilling body 2 is arranged at the bottom of the base 1, and the second drilling body 3 is arranged at the bottom of the first drilling body 2. The diameter of the first drilling body 2 is larger than the diameter of the second drilling body 3. Two grooves 4 are provided at the bottom of the second drilling body 3. A first inner cooling channel 5 is provided above the inside of the base 1, and two second inner cooling channels 6 are provided inside the base 1 below the first inner cooling channel 5. The two second inner cooling channels 6 are respectively connected to the left and right sides of the bottom of the first inner cooling channel 5, and each second inner cooling channel The bottom of each channel 6 is connected to a third inner cooling channel 7, which passes through the first drilling body 2 and the second drilling body 3 from the base body 1 in sequence and is connected to the groove 4. Each groove 4 is connected to a third inner cooling channel 7. The inner diameter of the top opening of the first inner cooling channel 5 is larger than the inner diameter of the bottom opening of the first inner cooling channel 5, the inner diameter of the top opening of the second inner cooling channel 6 is larger than the inner diameter of the bottom opening of the second inner cooling channel 6, and is consistent with the inner diameter of the bottom opening of the first inner cooling channel 5. The inner diameter of the top opening of the third inner cooling channel 7 is larger than the inner diameter of the bottom opening of the third inner cooling channel 7, and is consistent with the inner diameter of the bottom opening of the second inner cooling channel 6. By setting the first drilling body 2 and the second drilling body 3 with different diameters, the required hole position of the diamond-shaped seat of the large circular machine can be processed at one time, which greatly shortens the processing time. The coolant enters the first inner cooling channel 5, and then enters the left and right second inner cooling channels 6 respectively, enters the third inner cooling channel 7 from the second inner cooling channel 6, and is discharged to the groove 4. The coolant circulates inside the drill bit to achieve a cooling effect. The channel is divided into two, so that the coolant contacts the drill bit more completely, improving the cooling effect. The inner diameters of the first inner cooling channel 5, the second inner cooling channel 6, and the third inner cooling channel 7 are set to increase the flow rate of the coolant in each section, which is more conducive to the rapid discharge of the coolant, quickly taking away the heat, and achieving a good cooling effect.

[0039] Among them, the first inner cooling channel 5 includes a first hole 51 and a second hole 52, the first hole 51 is connected to the lower part of the second hole 52, the inner diameter of the first hole 51 decreases from top to bottom, the inner diameter of the second hole 52 decreases from top to bottom, the inner diameter of the second inner cooling channel 6 decreases from top to bottom, and the inner diameter of the third inner cooling channel 7 decreases from top to bottom. Through the setting of the first hole 51 and the second hole 52 with decreasing inner diameters, a two-stage acceleration effect is achieved at the first inner cooling channel 5. The second inner cooling channel 6 with decreasing inner diameter is used to achieve further acceleration after diversion, and the third inner cooling channel 7 with decreasing inner diameter is used to further increase the coolant discharge speed.

[0040] Among them, a chip removal groove 8 is provided on the outer side of the groove 4, and the chip removal groove 8 passes through the first drilling body 2 upward from the second drilling body 3 and extends to the lower part of the base 1. The chip removal groove 8 is connected with the groove 4, and the chip removal groove 8 is spirally arranged. The chip removal effect is achieved by the arrangement of the chip removal groove 8. The spirally arranged chip removal groove 8 can quickly separate the waste chips and avoid the processing influence caused by the accumulation of waste chips.

[0041] In this embodiment, the base body 1 and the first drilling body 2 are integrally formed, and the first drilling body 2 and the second drilling body 3 are integrally formed. The diameter of the base body 1 is 20 mm, the height of the base body 1 is 47.5 mm, the diameter of the first drilling body 2 is 16 mm, the height of the first drilling body 2 is 7.5 mm, the diameter of the second drilling body 3 is 10 mm, and the height of the second drilling body 3 is 25.0 mm. The drill point angle of the second drilling body 3 is 90°. The top of the first drilling body 2 has a first chamfering cutting edge 9, and the top of the second drilling body 3 has a second chamfering cutting edge 10. By setting the first chamfering cutting edge 9 and the second chamfering cutting edge 10, the chamfering operation of the hole end surface can be completed in one processing process, shortening the processing time.

[0042] Embodiment 2:

[0043] like Figure 7 As shown, the difference between this embodiment and the first embodiment is that:

[0044] A plurality of fourth inner cooling channels 11 are provided between the third inner cooling channel 7 and the chip removal groove 8. The fourth inner cooling channels 11 connected to the chip removal groove 8 not only further improve the heat exchange between the coolant and the drill bit and the cooling effect, but also facilitate the discharge of waste chips from the chip removal groove 8.

[0045] Embodiment three:

[0046] like Figures 8 to 9 As shown, the difference between this embodiment and the first embodiment is that:

[0047] The first drilling body 2 and the second drilling body 3 are detachably connected. Specifically, a plurality of slots 12 are provided at the bottom of the first drilling body 2, and arc-shaped slots 13 are connected to the left and right sides of the slots 12. A block 14 is fixed to the top of the second drilling body 3, and arc-shaped spring pieces 15 are fixed to the left and right sides of the block 14. The block 14 cooperates with the slots 12, and the arc-shaped spring pieces 15 cooperate with the arc-shaped slots. The detachable arrangement of the first drilling body 2 and the second drilling body 3 allows the first drilling body 2 to be replaced according to usage requirements. The first drilling body 2 and the second drilling body 3 are fixed once by the cooperation of the block 14 and the slots 12, and the first drilling body 2 and the second drilling body 3 are fixed twice by the cooperation of the arc-shaped spring pieces 15 and the arc-shaped slots, so that the connection between the first drilling body 2 and the second drilling body 3 is stable and easy to disassemble and assemble.

[0048] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features thereof may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A drill bit for machining diamond-shaped seats of large circular knitting machines, characterized in that: It includes a base body, a first drilling body, and a second drilling body; A first drilling body is arranged at the bottom of the base body, and a second drilling body is arranged at the bottom of the first drilling body; The diameter of the first borehole body is greater than the diameter of the second borehole body; The bottom of the second drilling body is provided with two grooves; A first inner cooling channel is provided above the inside of the base body, and two second inner cooling channels are provided inside the base body below the first inner cooling channel, and the two second inner cooling channels are respectively connected to the left and right sides of the bottom of the first inner cooling channel; The bottom of each of the second inner cooling channels is connected to a third inner cooling channel, and the third inner cooling channel sequentially passes through the first drilling body and the second drilling body from the base body and is connected to the groove; The inner diameter of the top opening of the first inner cooling channel is greater than the inner diameter of the bottom opening of the first inner cooling channel; The inner diameter of the top opening of the second inner cooling channel is larger than the inner diameter of the bottom opening of the second inner cooling channel, and is consistent with the inner diameter of the bottom opening of the first inner cooling channel; The inner diameter of the top opening of the third inner cooling channel is greater than the inner diameter of the bottom opening of the third inner cooling channel, and is consistent with the inner diameter of the bottom opening of the second inner cooling channel.

2. The drill bit for machining diamond-shaped seats of a large circular knitting machine according to claim 1, characterized in that: The first inner cooling channel includes a first hole and a second hole; The first hole is connected to the lower part of the second hole; The inner diameter of the first hole decreases from top to bottom; The inner diameter of the second hole decreases from top to bottom; The inner diameter of the second inner cooling channel decreases from top to bottom; The inner diameter of the third inner cooling channel decreases from top to bottom.

3. The drill bit for machining diamond-corner seats of a large circular knitting machine according to claim 1, characterized in that: A chip removal groove is formed on the outer side of the groove, and the chip removal groove passes through the first drilling body upward from the second drilling body and extends to the lower part of the base body; The chip removal groove is communicated with the groove, and the chip removal groove is arranged in a spiral shape.

4. The drill bit for machining diamond-corner seats of a large circular knitting machine according to claim 1, characterized in that: The base body and the first drilling body are integrally formed, and the first drilling body and the second drilling body are integrally formed or connected in a split manner.

5. The drill bit for machining diamond-corner seats of a large circular knitting machine according to claim 1, characterized in that: The diameter of the substrate is 20 mm, and the height of the substrate is 47.5 mm; The diameter of the first drilling body is 16 mm, and the height of the first drilling body is 7.5 mm; The diameter of the second drilling body is 10 mm, and the height of the second drilling body is 25.0 mm.

6. The drill bit for machining diamond-corner seats of a large circular knitting machine according to claim 1, characterized in that: The drill point angle of the second drilling body is 90°.

7. The drill bit for machining diamond-corner seats of a large circular knitting machine according to claim 1, characterized in that: The top of the first drilling body has a first chamfered cutting edge; The top of the second drilling body has a second chamfered cutting edge.

8. The drill bit for machining diamond-corner seats of a large circular knitting machine according to claim 3, characterized in that: A plurality of fourth inner cooling channels are provided between the third inner cooling channel and the chip removal groove.

9. The drill bit for machining diamond-corner seats of a large circular knitting machine according to claim 4, characterized in that: The first drilling body is detachably connected to the second drilling body.

10. The drill bit for machining diamond-corner seats of a large circular knitting machine according to claim 9, characterized in that: A plurality of slots are provided at the bottom of the first drilling body, and arc-shaped slots are connected to the left and right sides of the slots; A clamping block is fixed on the top of the second drilling body, and arc-shaped spring pieces are fixed on both the left and right sides of the clamping block; The clamping block cooperates with the clamping slot, and the arc-shaped spring piece cooperates with the arc-shaped slot.

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