CN209953829U - Boring device for lathe - Google Patents

Abstract

The utility model relates to a boring device for lathe installs lathe tool, smooth sword and woodkey on the boring head. The boring head is connected with a boring rod through a boring rod joint, a hoop is arranged on the boring rod, and the hoop is flatly attached to the reference surface of the lathe tool apron and connected by a bolt. Adopt the utility model discloses, utilize the advantage of deep hole boring machine bore hole on the lathe, utilize boring bar device wood key from the centering effect, the hole wall is polished to the finishing tool, processes out the hole of high accuracy fast on the lathe. The bore diameter is 110-300 mm and the length is 1000 mm. Use the utility model discloses a boring diameter is phi 150mm, and length is 670 mm's hole, uses the utility model discloses processing the back on the lathe, the size tolerance area in hole is steerable at 0.07mm, and the roughness in hole can reach Ra3.2 under the condition of not polishing and grinding, under the same machining allowance condition, shortens 1/3, production efficiency height more in the processing man-hour of bore hole on the lathe usually.

Description

Boring device for lathe

Technical Field

The utility model relates to a bore hole device for lathe.

Background

At present, the requirements on the dimensional tolerance and the form and position tolerance of two end stop holes of a first super-long ship type propeller shaft in China are high, and when a common boring bar is used on a lathe for machining, the machining speed is extremely low, and the machining quality is extremely poor. In general, a plain boring bar 11 as shown in fig. 5 is used for boring a hole in a lathe, and when the depth of the machined hole exceeds 400mm, the surface of the workpiece has many chatter marks and is deep, and the time for polishing the hole is too long.

Disclosure of Invention

The utility model aims at the above-mentioned current situation, aim at providing one kind can accomplish the processing in high accuracy hole on all lathes fast, the hole face is smooth, the bore hole device for the lathe that production efficiency is high.

The utility model aims at realizing the boring device for the lathe, wherein the boring head is provided with a lathe tool hole for mounting a lathe tool and a smooth tool hole for mounting a smooth tool; 1-4 turning tool holes are arranged in the horizontal direction, and the distance between the turning tool holes is 40 mm; the highest point of the finishing cutter arranged in the finishing cutter hole is 0.25mm higher than the highest point of the turning cutter arranged in the turning cutter hole;

the boring head is provided with a plurality of wood key holes for installing wood keys, and after the wood keys are plugged into the wood key holes, the wood keys are 1-2mm higher than the hole openings of the holes to be bored; the boring head is connected with a boring rod through a boring rod joint, and a clamp arranged on the boring rod is flatly attached to a reference surface of a lathe tool apron and connected by a bolt; the centers of the coupling holes of the hoop and the boring rod and the center of the cutter holder are on the same line; a key groove is formed in the outer circle of the boring rod.

Adopt the utility model discloses, can only adorn the lathe tool during rough bore hole, do not adorn the smooth sword. The smooth cutter is installed to improve the roughness of the processed hole. The wood key is arranged on the boring head and is tightly attached to the wall of the wood key hole, so that the whole boring bar is supported, and vibration generated in the machining process of the boring bar is avoided. The utility model discloses the rigidity of more ordinary boring bar is good, and the wall thickness difference in processing back hole is little, and the straightness accuracy in hole is high.

The boring bar is provided with a hoop which is flatly attached to the reference surface of the lathe tool apron and connected by a bolt. The center of clamp and boring bar hookup hole and the certain collineation of the central line of blade holder guarantee the utility model discloses it is general to all lathes. A key groove is formed in the outer circle of the boring rod, so that the clamp and the boring rod are prevented from moving during machining.

The utility model provides a boring quality is poor, the difficult problem of man-hour overlength on the lathe. By adopting the utility model, the bore hole has the diameter of phi 110-phi 300mm and the length within 1000mm, and the best effect is achieved. To a diameter for phi 150mm, length is 670 mm's hole, uses the utility model discloses processing the back on the lathe, the size tolerance area in hole is steerable at 0.07mm, and the hole face is smooth, and the roughness in hole can reach Ra3.2 under the condition of not polishing and grinding, under the same allowance condition, shortens 1/3, production efficiency height more often in the processing man-hour of bore hole on the lathe.

The utility model discloses be fit for all lathes, can satisfy the processing requirement, again can reduction in production cost. The support of the wood key of the boring head is removed, and the taper hole can be turned.

Drawings

Figure 1 is a schematic structural view of the present invention,

figure 2 is a view from a-a of figure 1,

FIG. 3 is a schematic view showing the connection of the clamp, the tool post and the lathe,

figure 4 is the working state diagram of the utility model,

fig. 5 is a schematic view of a structure of a general boring bar.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings.

Referring to fig. 1, 2 and 3, the boring head 1 of the present invention has a turning tool hole 6 for installing a turning tool and a finishing tool hole 7 for installing a finishing tool. The number of the turning tool holes is 1-4, the turning tool holes are arranged in the horizontal direction, and the distance between the turning tool holes is 40 mm. The highest point of the smooth cutter arranged in the smooth cutter hole is 0.25mm higher than the highest point of the turning cutter arranged in the turning cutter hole.

The boring head is provided with a plurality of wood key holes for installing wood keys, and after the wood keys are plugged into the wood key holes, the height of the wood key holes is 1-2mm higher than the hole openings of the holes to be bored; the boring head is connected with a boring rod through a boring rod joint, and a clamp arranged on the boring rod is flatly attached to a reference surface of a lathe tool apron and connected by a bolt; the centers of the coupling holes of the hoop and the boring rod and the center of the cutter holder are on the same line; a key groove is formed in the outer circle of the boring rod.

The utility model discloses a lathe tool hole has 1-4, can install three lathe tools simultaneously, can increase the cutting output of a turning, reduces the processing number of times, improves production efficiency. The boring head can be simultaneously provided with a smooth cutter, and the purpose of installing the smooth cutter is to improve the roughness of the processed hole and improve the processing quality. During rough boring, only a turning tool can be installed, and a finishing tool is not installed.

The boring head is provided with 8 wood key holes 8 for mounting wood keys, and after the eight wood keys are plugged into the wood key holes, the wood keys are 1-2mm higher than the hole openings of the holes to be bored. The wood key is tightly attached to the wall of the hole of the wood key hole, because the wood key is higher than the hole opening of the hole to be bored, the wood key is soft in material, and a part higher than the hole opening is ground off, namely the wood key is ground into the hole opening, by the rotation of a machine tool; the wood key is tightly attached to the wall of the hole of the wood key, so that the wall of the hole can be supported, vibration generated in the machining process of the boring rod is avoided, and the straightness of the hole after boring is improved. If the support of the wood key of the boring head is removed, the utility model can also be used for directly boring the taper hole.

The boring head is connected with the boring bar through a boring bar joint, and a clamp arranged on the boring bar is flatly attached to the reference surface of the lathe tool apron and connected with the reference surface by a bolt. The centers of the clamp and the boring bar connecting hole are on the same line with the center of the cutter holder. A key groove is formed in the outer circle of the boring rod.

Utilize the utility model discloses during the boring taper hole, processing on being different from deep hole drill boring machine, with a lathe tool of boring head facial make-up, do not adorn smooth sword and wood key, feed simultaneously on diameter and the length direction on the lathe, the boring goes out the conical surface. And the deep hole drilling and boring machine can only feed in the diameter direction, add and put the step hole, and finally, the one-step forming processing is carried out by using a forming cutter, so that the limitation is large.

The boring head 1 is connected with a boring rod joint 2, and then connected with a boring rod 3. The boring bar 3 is provided with a hoop 4, and the hoop 4 is flatly attached to the reference surface of a lathe tool apron 8 and connected with the lathe tool apron 8 through bolts. The center of the coupling hole of the hoop 4 and the boring bar 3 and the center line of the tool apron 8 are collinear, and the utility model is universal for all lathes. A key groove 5 is formed in the outer circle of the boring rod 3, and the clamp 4 and the boring rod 3 are prevented from moving during machining.

When the utility model is used for boring, the hole has the diameter of phi 110-phi 300mm and the length within 1000mm, and the effect is best. When a hole with the diameter of phi 150mm and the length of 670mm is roughly bored, the hole is firstly led to the depth of 200mm, two or three turning tools and one finishing tool are arranged on a boring head 1, and eight wood keys are arranged for grinding and then boring; when semi-precision boring is carried out, firstly, the hole is led to the depth of 200mm, a turning tool and a smooth cutter are arranged on the boring head 1, and the boring is carried out after wood key grinding is also arranged; when the hole is slightly arranged and finely bored, the hole is firstly led to the depth of 200mm, only a smooth cutter and a wood key are arranged on a boring head, and the wood key is ground and then bored. After two times of row-tip (or two rows of smooth cutter rows are used for one time) and one time of fine boring, the hole surface is smooth, the roughness of the hole can reach Ra3.2 under the condition of no polishing, the dimensional tolerance can be controlled to be 0.07mm, the processing time of boring on a lathe is shortened by 1/3 compared with the ordinary condition of boring on a lathe under the same processing allowance, and the production efficiency is high.

Claims (2)

1. Boring device for lathe, its characterized in that: the boring head is provided with a turning tool hole for mounting a turning tool and a smooth tool hole for mounting a smooth tool; 1-4 turning tool holes are arranged in the horizontal direction, and the distance between the turning tool holes is 40 mm; the highest point of the finishing cutter arranged in the finishing cutter hole is 0.25mm higher than the highest point of the turning cutter arranged in the turning cutter hole;

the boring head is provided with a plurality of wood key holes for installing wood keys, and after the wood keys are plugged into the wood key holes, the wood keys are 1-2mm higher than the hole openings of the holes to be bored; the boring head is connected with a boring rod through a boring rod joint, and a clamp arranged on the boring rod is flatly attached to a reference surface of a lathe tool apron and connected by a bolt; the centers of the coupling holes of the hoop and the boring rod and the center of the cutter holder are on the same line; a key groove is formed in the outer circle of the boring rod.

2. A boring device for a lathe according to claim 1, wherein: the boring head is provided with 8 wood key holes for mounting wood keys, and the wood keys are plugged into the wood key holes.

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