CN216096500U - Small-size compressor connecting rod bore hole device - Google Patents

Abstract

The utility model discloses a boring device for a connecting rod of a small compressor, which comprises two main shafts, wherein the two main shafts are parallel to each other and comprise a boring head body and two cutter bars, the two main shafts penetrate through the boring head body, the two main shafts are rotatably connected with the boring head body, synchronous belt pulleys are fixedly arranged at the tops of the two main shafts, eccentric holes are respectively formed at the bottoms of the two main shafts, one ends of the cutter bars are inserted into the eccentric holes and rotatably arranged on the main shafts, and boring cutters are fixedly arranged on the cutter bars. The structure of double main shafts and double cutter bars is adopted, two holes of the compressor connecting rod can be bored at one time, and the boring machine is high in working efficiency and high in precision. The cutter arbor inserts in the eccentric hole and rotatable fixes on the main shaft, when rotating the cutter arbor, can adjust the swing angle of cutter arbor, and then realizes the fine setting in aperture on the connecting rod, avoids the trouble of tool changing like this, and further improvement work efficiency guarantees machining precision and part quality.

Description

Small-size compressor connecting rod bore hole device

Technical Field

The utility model relates to the field of compressor manufacturing, in particular to a boring device for a connecting rod of a small compressor.

Background

The center distance adjusting mechanism of the original compressor connecting rod boring device is an eccentric sleeve structure, and the eccentric sleeve has low yield due to inconsistent heat treatment deformation in the eccentric sleeve processing process because the eccentric sleeve has uneven thickness; and in the using process of the connecting rod boring device, the cutting thermotropic device is deformed, so that the bearing is quickly failed, and the bearing needs to be replaced every day in the mass production process. The processing cost is too high and the production benefit is low due to the two reasons. This patent improves the device, has the position precision height, and thick, the processing of smart boring is integrative, need not the tool changing, has reduced the process, shortens processing cycle, has improved production efficiency, the cost is reduced to simple structure, characteristics that the reliability is high have embodied the practicality. The patent document with publication number CN106363208B discloses a boring machine for connecting rod special-shaped holes, which includes a first boring mechanism and a second boring mechanism, the first boring mechanism and the second boring mechanism are arranged in parallel on a machine body, a connecting rod clamp is arranged on the machine body, the second boring mechanism and an oval adjusting mechanism are arranged in a mutually matched manner, the oval adjusting mechanism includes a driving part and a driven part, the driven part is fixedly connected with the second boring mechanism, the driving part operates to drive the driven part to rotate so as to make the axis of the second boring mechanism shift, and the connecting rod clamp drives a connecting rod to feed to complete the machining of the special-shaped holes. The first boring mechanism matched with the connecting rod big end hole and the second boring mechanism matched with the connecting rod small end hole are arranged, and the machining of the connecting rod big end hole and the connecting rod small end hole can be completed after one-time positioning and clamping. Although the boring machine can finish the boring of the large and small holes at two ends of the connecting rod at one time, the boring machine can only work on large parts, and the hole diameter of the boring hole cannot be finely adjusted uniformly.

SUMMERY OF THE UTILITY MODEL

In order to solve the above problems, an object of the present invention is to provide a small-sized compressor connecting rod boring device for processing a compressor connecting rod, which facilitates fine adjustment of a bore diameter.

In order to achieve the purpose, the utility model adopts the following technical scheme: the boring machine comprises two main shafts and two cutter bars, wherein the two main shafts are parallel to each other and comprise a boring head body and two cutter bars, the two main shafts penetrate through the boring head body, the two main shafts are rotatably connected with the boring head body, synchronous belt pulleys are fixedly mounted at the tops of the two main shafts, eccentric holes are formed in the bottoms of the two main shafts, one ends of the cutter bars are inserted into the eccentric holes and are rotatably mounted on the main shafts, and boring cutters are fixedly mounted on the cutter bars.

Preferably, the boring head body is provided with a plurality of fixing holes, and the fixing holes are perpendicular to the main shaft. Therefore, the verticality of the cutter bar and the main shaft during machining is ensured.

Preferably, the boring cutter comprises a rough boring cutter and a fine boring cutter, the rough boring cutter and the fine boring cutter are fixedly arranged on a cutter rod, and the rough boring cutter is positioned below the fine boring cutter. Therefore, the hole to be bored can be machined at one time, and the working efficiency is improved.

Preferably, the dust sealing device further comprises a plurality of upper dust sealing rings and lower dust sealing rings for sealing dust, and the upper dust sealing rings and the lower dust sealing rings are arranged between the two main shafts and the boring head body.

Preferably, the outer circular surfaces of the two cutter bars are provided with locking parts in a protruding mode, each cutter bar is sleeved with a pressing plate, the locking parts are located between the pressing plates and the main shaft, and each pressing plate presses the locking parts and the main shaft through a fastening piece. Thus, the cutter bar is convenient to position and adjust.

Preferably, two waist-shaped holes are formed in the locking portion and penetrate through the locking portion, the two waist-shaped holes are symmetrically arranged, and the fastening piece penetrates through the waist-shaped holes and is in threaded connection with the spindle. Therefore, the cutter bar can be conveniently rotated and positioned.

Preferably, the bottom surfaces of the two main shafts are provided with reticle groups for representing rotation angles, the reticle groups are arranged around the eccentric hole, and the reticle groups can represent the maximum adjustment angle beta. Thus, the adjustable range of the cutter rod can be clearly reflected.

Preferably, the fastening piece is a locking screw, the main shaft is provided with two threaded holes, and the axis of one threaded hole is intersected with the scribing line of one scribing group. Therefore, the initial position of the cutter bar can be rapidly determined, and the working efficiency is improved.

Preferably, the maximum angle through which the blade holder can be rotated is α.

Preferably, the angle α is smaller than the angle β. Therefore, the cutter bar can clearly show the adjusting angle in the adjusting range.

The technical scheme of the utility model has the beneficial effects that:

the device has simple and reliable structure, can process the connecting rod with small size and also can process parts with large size. The structure of double main shafts and double cutter bars is adopted, two holes of the compressor connecting rod can be bored at one time, and the boring machine is high in working efficiency and high in precision. The cutter arbor inserts in the eccentric hole and rotatable fixes on the main shaft, when rotating the cutter arbor, can adjust the swing angle of cutter arbor, and then realizes the fine setting in aperture on the connecting rod, avoids the trouble of tool changing like this, and further improvement work efficiency guarantees machining precision and part quality.

Drawings

FIG. 1 is a schematic structural view of a small compressor connecting rod boring device;

FIG. 2 is a first schematic structural view of the spindle;

FIG. 3 is a second schematic structural view of the spindle;

FIG. 4 is a first schematic view of the knife bar;

FIG. 5 is a second schematic view of the structure of the knife bar;

FIG. 6 is a schematic structural view of the bore body;

fig. 7 is a schematic view of a compressor connecting rod.

Reference numerals: 1. a boring head body; 11. an inner bore; 12. a limiting part; 13. a fixing hole; 2. a main shaft; 21. a bearing; 22. an inner spacer ring; 23. an outer space ring; 24. a long space ring; 25. pressing the helicoids; 26. a top section; 27. a second shoulder; 271. a reticle group; 272. a first shoulder; 28. an eccentric hole; 29. a threaded hole; 3. a synchronous pulley; 4. a cutter bar; 41. an upper side section; 42. a locking portion; 421. a kidney-shaped hole; 44. finely boring the mounting hole; 45. roughly boring a mounting hole; 5. a lower dust sealing ring; 51. an upper dust sealing ring; 6. a spacer sleeve; 7. a fastener; 8. pressing a plate; 9. a compressor connecting rod; 91. a first link hole; 92. a second link hole.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the utility model and are not to be construed as limiting the utility model.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be considered as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, unless otherwise specified, "a plurality" means two or more unless explicitly defined otherwise.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

As shown in fig. 1, a small compressor connecting rod boring device comprises two main shafts 2, the two main shafts 2 are parallel to each other, the small compressor connecting rod boring device further comprises a boring head body 1 and two cutter bars 4, the two main shafts 2 penetrate through the boring head body 1 from top to bottom, the main shafts 2 are rotatably connected with the boring head body 1, synchronous pulleys 3 are fixedly mounted at the tops of the two main shafts 2, eccentric holes 28 are formed at the bottoms of the two main shafts 2, upper side sections 41 of the cutter bars 4 are inserted into the eccentric holes 28 and rotatably mounted on the main shafts 2, and boring cutters are fixedly mounted on the cutter bars 4

In this embodiment, as shown in fig. 1, 2, and 6, two inner holes 11 are formed in the boring body 1, the two inner holes 11 are parallel to each other, the two inner holes 11 penetrate the boring body 1 from bottom to bottom, and a limiting portion 12 protrudes from an inner circular end wall of the inner holes 11. The bottom section of each main shaft 2 is provided with a shaft shoulder which is formed by protruding outwards, the shaft shoulder comprises a first shaft shoulder 272 and a second shaft shoulder 27, the first shaft shoulder 272 is positioned on the upper side of the second shaft shoulder 27, the outer diameter of the first shaft shoulder 272 is smaller than that of the second shaft shoulder 27, the first shaft shoulder 272 is inserted into the inner hole 11 of the boring head body 1, and the second shaft shoulder 27 is positioned on the lower side of the boring head body 1. In this embodiment, each spindle 2 is sleeved with four sets of bearings 21, two of the bearings 21 are located on the lower side of the limiting portion 12 in the boring head body 1, the other two bearings 21 are located on the upper side of the limiting portion 12, the two bearings 21 located on the lower side are isolated from each other by an inner spacer 22 and an outer spacer 23, the inner spacer 22 is located between the inner rings of the two bearings 21 on the lower side, the outer spacer 23 is located between the outer rings of the two bearings 21 on the lower side, the bottoms of the two inner holes 11 are both provided with pressing helicoids 25 in a threaded connection manner, the pressing helicoids 25 are located on the lower sides of all the bearings 21, the first shoulders 272 are located on the inner sides of the pressing helicoids 25, the pressing helicoids are located on the upper side of the second shoulders 27, the pressing helicoids 25 abut against the outer rings of the bottom bearings 21, and the inner rings of the bearings 21 located on the lower sides abut against the first shoulders 272 of the spindles 2; the limiting part 12 abuts against the outer rings of the bearings 21, a long space ring 24 is arranged between the two bearings 21 in the middle, the long space ring 24 is sleeved on the main shaft 2, the long space ring 24 penetrates through the limiting part 12, and the long space ring 24 abuts against the inner rings of the two bearings 21 in the middle; the two bearings 21 on the upper side are isolated by an inner spacer 22 and an outer spacer 23, wherein the inner spacer 22 is positioned between the inner rings of the two bearings 21 on the lower side, and the outer spacer 23 is positioned between the outer rings of the two bearings 21 on the lower side; a spacer 6 is arranged between the bearing 21 on the upper side and the synchronous pulley 3, the spacer 6 is sleeved on the main shaft 2, and the spacer 6 abuts against the inner ring of the bearing 21 on the upper side. An upper dust sealing ring 51 is arranged between the spacer 6 and the inner hole 11 of the boring head body 1, and a lower dust sealing ring 5 is arranged at the bottom of the boring head body 1. A plurality of fixing holes 13 are formed in the boring head body 1, the plurality of fixing holes 13 penetrate through the boring head body 1 in the front-back direction, and the axes of the fixing holes 13 are perpendicular to the axis of the inner hole 11. The two main shafts 2 comprise top sections 26, threads are arranged on the top sections 26, and the synchronous belt wheels 3 are in threaded connection with the top sections 26 of the main shafts 2

In this embodiment, as shown in fig. 2 and 3, the bottom of the main shaft 2 is provided with two threaded holes 29, the two threaded holes 29 are located at two sides of the eccentric hole 28, the bottom of the main shaft 2 is provided with a reticle group 271 for indicating an angle, the maximum angle that can be expressed by the reticle group 271 is β, and the reticle group 271 is disposed around the eccentric hole 28 at the bottom surface of the main shaft 2. Therefore, the angle of adjustment of the cutter bar 4 is convenient to observe and judge, and the diameter of the hole formed by the compressor connecting rod 9 is convenient to control. Further, the scribe lines on the left side in the scribe line group 271 intersect the axis of one of the threaded holes 29.

In the embodiment, as shown in fig. 4 and 5, two cutter bars 4 are fixedly installed by two pressing plates 8, a locking portion 42 is protruded from the outer circle end of each cutter bar 4, each locking portion 42 is provided with two waist-shaped holes 421, the pressing plate 8 is located below the locking portion 42, the pressing plate 8 is sleeved on the cutter bars 4, and each pressing plate 8 is provided with two unthreaded holes; when the cutter bar 4 is installed, the fastening piece 7 sequentially penetrates through the unthreaded hole of the pressing plate 8 and the waist-shaped hole 421 of the locking part 42 on the cutter bar 4 and then is in threaded connection with the threaded hole 29 at the bottom of the main shaft 2, and then the cutter bar 4 is fixed at the bottom of the main shaft 2 through the pressing plate 8. The axis of the center line of the kidney-shaped hole 421 is arc-shaped, the angle of the arc is α, the angle α also represents the maximum rotation angle of the cutter bar 4, and the angle α is smaller than the angle β. The fastener 7 is a locking stud. Like this, locking screw's position can be fixed, and locking screw's axis intersects with the line of drawing on the leftmost, and when rotating cutter arbor 4, when waist type hole 421 conflicts with the bolt, the initial position of confirming cutter arbor 4 that can be quick improves work efficiency, guarantees the uniformity in the hole of processing at every turn. The cutter bar 4 is provided with mounting holes, the mounting holes comprise a rough boring mounting hole 45 and a fine boring mounting hole 44, the rough boring mounting hole 45 is positioned at the lower side of the fine boring mounting hole 44, the boring cutter comprises a rough boring cutter and a fine boring cutter, the rough boring cutter is fixed at the rough boring mounting hole 45 at the lower side through a locking screw, and the fine boring cutter is fixed in the fine boring mounting hole 44 at the upper side through the locking screw. Therefore, the compressor connecting rod 9 is processed by one-step forming, and the processing efficiency is improved.

In this embodiment, as shown in fig. 7, the left and right ends of the compressor connecting rod 9 are respectively provided with a first connecting rod hole 91 and a second connecting rod hole 92. The process of using the boring device to process the compressor connecting rod 9 comprises the following steps: fixing a compressor connecting rod 9, driving a synchronous belt pulley 3 to rotate so as to drive a main shaft 2 to rotate, driving a cutter bar 4 to rotate by the rotation of the main shaft 2, and driving a boring cutter to rotate by the rotation of the cutter bar 4; moving the boring head body 1 downwards to enable the two cutter bars 4 to enter the first connecting rod hole 91 and the second connecting rod hole 92 respectively, and enabling the rough boring cutter and the fine boring cutter to pass through the first connecting rod hole 91 and the second connecting rod hole 92 in sequence; after boring is completed, the boring head body 1 is moved upwards, so that the cutter bar 4 is separated from the compressor connecting rod 9.

When the aperture on the compressor connecting rod 9 is fine-tuned: the locking screw is rotated to gradually release the pressure plate 8, the cutter bar 4 and the main shaft 2, the cutter bar 4 is rotated, the cutter bar 4 can generate relative displacement along the eccentric hole 28 at the bottom of the main shaft 2, the rotation angle of the cutter bar 4 is judged according to the line engraving group 271, the cutting amount of the boring cutter in the next boring process can be further judged and adjusted, and the aperture of the hole on the compressor connecting rod 9 is further changed in the next boring hole; after the rotation angle of the cutter bar 4 is determined, the pressing plate 8, the cutter bar 4 and the main shaft 2 are locked and fixed with each other again through the locking screw.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made in the above embodiments by those of ordinary skill in the art without departing from the principle and spirit of the present invention.

Claims (10)

1. A small-size compressor connecting rod bore hole device, includes two main shafts (26), and two main shafts (26) are parallel to each other, its characterized in that: including boring head body (1) and two cutter arbor (4), boring head body (1) is run through in two main shaft (26), two main shaft (26) rotate with boring head body (1) and are connected, the equal fixed mounting in top of two main shaft (26) has synchronous pulley (3), two main shaft (26) bottoms all are equipped with eccentric orfice (28), cutter arbor (4) one end insert in eccentric orfice (28) and rotatable the installation on main shaft (26), fixed mounting has the boring cutter on cutter arbor (4).

2. A small compressor connecting rod boring device according to claim 1, wherein: a plurality of fixing holes (13) are formed in the boring head body (1), and the fixing holes (13) are perpendicular to the main shaft (26).

3. A small compressor connecting rod boring device according to claim 1, wherein: the boring cutter comprises a rough boring cutter and a fine boring cutter, the rough boring cutter and the fine boring cutter are both fixedly arranged on the cutter bar (4), and the rough boring cutter is positioned below the fine boring cutter.

4. A small compressor connecting rod boring device according to claim 1, wherein: the boring machine is characterized by further comprising a plurality of upper dust sealing rings (51) and lower dust sealing rings (5) for sealing dust, wherein the upper dust sealing rings (51) and the lower dust sealing rings (5) are arranged between the two main shafts (26) and the boring head body (1).

5. A small compressor connecting rod boring device according to claim 1, wherein: the outer disc of two cutter arbor (4) goes up the arch has locking portion (42), all overlaps on every cutter arbor (4) to be equipped with clamp plate (8), and locking portion (42) are located between clamp plate (8) and main shaft (26), and every clamp plate (8) are through fastener (7) with locking portion (42) and main shaft (26) compress tightly.

6. The small compressor connecting rod boring device according to claim 5, wherein: two waist-shaped holes (421) are formed in the locking portion (42), the two waist-shaped holes (421) penetrate through the locking portion (42), the two waist-shaped holes (421) are symmetrically arranged, and the fastening piece (7) penetrates through the waist-shaped holes (421) to be in threaded connection with the spindle (26).

7. The small compressor connecting rod boring device according to claim 6, wherein: the bottom surfaces of the two main shafts (26) are provided with a line scribing group (271) for representing a rotation angle, the line scribing group (271) is arranged around the eccentric hole (28), and the maximum adjustment angle beta represented by the line scribing group (271) can be obtained.

8. A small compressor connecting rod boring device according to claim 7, wherein: the fastening piece (7) is a locking screw, two threaded holes (29) are formed in the main shaft (26), and the axis of one threaded hole (29) is intersected with the scribing line of one scribing group (271).

9. The small compressor connecting rod boring device according to claim 8, wherein: the maximum angle that the cutter bar (4) can rotate is alpha.

10. The small compressor connecting rod boring device according to claim 9, wherein: the angle alpha is smaller than the angle beta.

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