CN217617892U

CN217617892U - Crankshaft pin oil hole drilling equipment

Info

Publication number: CN217617892U
Application number: CN202221508810.4U
Authority: CN
Inventors: 张绍全; 王继国; 张家庚
Original assignee: Chongqing Yunyang Crankshaft Co ltd
Current assignee: Chongqing Yunyang Crankshaft Co ltd
Priority date: 2022-06-16
Filing date: 2022-06-16
Publication date: 2022-10-21
Anticipated expiration: 2032-06-16

Abstract

The utility model provides a crankshaft pin oil hole drilling device, which comprises an operating platform and a drill bit arranged on the operating platform; further comprising: the supporting base is fixedly arranged on the operating table and provided with a first supporting arm and a second supporting arm which slide relatively, and a clamping position for axially clamping the crank pin is defined between the first supporting arm and the second supporting arm; the fixing piece comprises a supporting part and an abutting part which is arranged opposite to the supporting part, the supporting part is arranged on the first supporting arm and is provided with a first opening for supporting one end face of the crank pin, the abutting part is arranged on the second supporting arm and is provided with a second opening for supporting the other end face of the crank pin, and the first opening and the second opening are coaxially arranged; and the positioning column is coaxially arranged in the first opening. The utility model provides a traditional frock easily make the bent axle round pin take place to remove and influence its drilling accuracy's technical problem at drilling process.

Description

Crankshaft pin oil hole drilling equipment

Technical Field

The utility model relates to a bent axle round pin processing technology field especially relates to a bent axle round pin bores oilhole equipment.

Background

The crankpin is an important component of the engine to connect the engine crankshaft to the big end of the connecting rod and to provide sufficient lubricating oil for the crankshaft. Referring to fig. 1, a crankpin 1 has a cylindrical structure, and includes an oil hole 11 formed in a side surface thereof and a positioning hole 12 formed in an end surface thereof, the oil hole 11 being adapted to communicate with the outside, and the positioning hole 12 being adapted to assist assembly. The utility model discloses a chinese utility model patent that publication number is CN204673013U, name are a crank pin bores oilhole frock specifically discloses "clamping device is fixed in the upper portion of workstation, and clamping device adopts cylindrically and is provided with horizontal through-hole, and the diameter of through-hole slightly about the diameter of crank pin, and the length of through-hole is half of crank pin length". The tool clamps one end face of the crankpin through the transverse through hole, the other end face of the crankpin extends out of the transverse through hole, and when a central oil hole drill bit, an inclined hole drill bit, a positioning hole drill hole and an inclined hole chamfering drill bit simultaneously operate, the crankpin can axially move under the pushing of the positioning hole drill bit, so that corresponding hole positions machined by the drill bits are not in ideal positions; in addition, since the diameter of the transverse through-hole is larger than that of the crank pin, a gap may exist therebetween, and the gap may also affect the drilling accuracy of the crank pin.

SUMMERY OF THE UTILITY MODEL

Not enough to exist among the prior art, the utility model provides a bent axle bores oilhole equipment to traditional frock easily makes the bent axle round pin take place to remove and influence its drilling precision's technical problem in the drilling process among the solution correlation technique.

The utility model provides a crankshaft pin oil hole drilling device, which comprises an operating platform and a drill bit arranged on the operating platform; further comprising:

the supporting base is fixedly arranged on the operating platform and provided with a first supporting arm and a second supporting arm which slide relatively, and a clamping position for axially clamping the crank pin is defined between the first supporting arm and the second supporting arm;

the fixing piece comprises a supporting part and an abutting part which is arranged opposite to the supporting part, the supporting part is arranged on the first supporting arm and is provided with a first opening for supporting one end face of the crank pin, the abutting part is arranged on the second supporting arm and is provided with a second opening for supporting the other end face of the crank pin, and the first opening and the second opening are coaxially arranged;

the positioning column is coaxially arranged in the first opening.

The utility model discloses an effect object is the bent axle round pin (all being abbreviated as "bent axle round pin" hereafter) that has accomplished the locating hole processing, the utility model discloses a theory of operation: the end face of the crank pin extends into the first opening, the positioning column extends into the positioning hole of the crank pin, then the first supporting arm and the second supporting arm are driven to slide relatively until the other end face of the crank pin extends into the second opening and abuts against the abutting portion, and then the drill bit is driven to drill the side face of the crank pin.

Compared with the prior art, the utility model discloses following beneficial effect has: the first supporting arm and the second supporting arm which slide relatively are respectively provided with a supporting part and a butting part which are matched with each other, and the supporting part and the butting part are respectively provided with a first opening and a second opening which are coaxially arranged, so that two end faces of the crankpin are respectively inserted and butted on the supporting part and the butting part through the first opening and the second opening, preliminary axial positioning is carried out on the crankpin, and the crankpin is prevented from moving radially due to the pushing of a drill bit; in addition, a positioning column is arranged in the first opening and is used for being matched with a positioning hole in the end face of the crank pin, when the end face of the crank pin is inserted into the first opening, the positioning column is inserted into the positioning hole, and the positioning hole of the crank pin is located on the axis of the crank pin, so that the positioning column inserted into the positioning hole is used for axially positioning the crank pin again, the crank pin can be fixed on the clamping position under the matching of the supporting portion and the abutting portion, and then the drill bit convenient to operate drills an oil hole in the crank pin.

Furthermore, a driving block is arranged in the first opening, and one end of the positioning column is screwed in the driving block.

Further, the driving block is driven by a first air cylinder arranged on the supporting portion, so that the driving block and the positioning column move synchronously along the axial direction of the first opening.

Further, a first limiting block is screwed on one end, close to the abutting portion, of the supporting portion, and the first limiting block is of a hollow cavity structure and communicated with the first opening.

Furthermore, a moving groove is formed in the supporting base, and the second supporting arm is arranged on the supporting base in a sliding mode through the moving groove, so that the second supporting arm is close to or far away from the first supporting arm.

Further, the abutting portion is driven by a second cylinder provided on the second support arm so as to be close to or away from the support portion.

Further, a second limiting block is arranged in the second opening in a screwed mode, and the second limiting block is of a hollow cavity structure and communicated with the second opening.

Furthermore, a clamping part is arranged between the supporting part and the abutting part in a sliding mode, and the sliding direction of the clamping part is perpendicular to the sliding direction of the second supporting arm.

Further, a V-shaped opening is formed in the clamping portion, and two ends of the V-shaped opening face the supporting portion and the abutting portion respectively.

Furthermore, an elastic pad is arranged on the inner wall of the V-shaped opening.

Drawings

FIG. 1 is a schematic view of a crankshaft pin configuration;

fig. 2 is a schematic structural view of an oil hole drilling device for a crankpin according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a support base according to an embodiment of the present invention;

fig. 4 is a schematic structural view of a supporting portion according to an embodiment of the present invention;

fig. 5 is a schematic structural diagram of the engaging portion according to an embodiment of the present invention.

The reference numbers illustrate:

1. a crank pin; 11. an oil hole; 12. positioning holes; 2. an operation table; 3. a drill bit; 4. a support base; 41. a first support arm; 42. a second support arm; 43. clamping; 5. a fixing member; 51. a support portion; 511. a first opening; 512. a drive block; 513. a first stopper; 52. an abutting portion; 521. a second opening; 522. a second limiting block; 6. a positioning column; 7. a moving groove; 8. a fastening part; 9. and a V-shaped opening.

The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.

Detailed Description

In order to make the objects, technical solutions and advantageous effects of the present invention more clearly understood, the following technical solutions of the present invention are further described with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

Referring to fig. 2 to 5, the utility model provides a crankshaft pin oil hole drilling device, which comprises an operating platform 2 and a drill bit 3 arranged on the operating platform 2; further comprising:

the supporting base 4 is fixedly arranged on the operating platform 2, and is provided with a first supporting arm 41 and a second supporting arm 42 which slide relatively, and a clamping position 43 for axially clamping the crank pin is defined between the first supporting arm and the second supporting arm;

a fixing member 5, the fixing member 5 including a support portion 51 and an abutting portion 52 disposed opposite to the support portion 51, the support portion 51 being provided on the first support arm 41 and having a first opening 511 for supporting one end surface of the crankpin, the abutting portion 52 being provided on the second support arm 42 and having a second opening 521 for supporting the other end surface of the crankpin, the first opening 511 and the second opening 521 being coaxially disposed;

the positioning column 6 is coaxially arranged in the first opening 511, and the positioning column 6 is coaxially arranged in the first opening 511.

In the present embodiment, as shown in fig. 1, a drill 3 and a support base 4 for supporting a crank pin are provided on an operation table 2 (the operation mode of the drill 3 in the present embodiment is the prior art, and is not described in detail here); as shown in fig. 2, in order to clamp the crank pin in the axial direction (the object of action of the present embodiment is the crank pin with a finished positioning hole, which is hereinafter referred to as "crank pin"), a support portion 51 and an abutting portion 52 are respectively provided on the opposite end surfaces of the first support arm 41 and the second support arm 42, and a first opening 511 and a second opening 521 coaxially arranged are respectively provided on the support portion 51 and the abutting portion 52, so that the two end surfaces of the crank pin are respectively inserted into the first opening 511 and the second opening 521 and respectively abut against the support portion 51 and the abutting portion 52, thereby realizing axial clamping of the crank pin, and positioning the two ends thereof, not only facilitating the drilling of the oil hole on the side surface of the crank pin by the drill 3, but also avoiding the crank pin from moving in the axial direction during the drilling process; in addition, in order to facilitate taking and placing the crank pin, the first support arm 41 and the second support arm 42 are in a relative sliding state (the relative sliding of the first support arm 41 and the second support arm 42 can be defined as: only the first support arm 41 or the second support arm 42 slides, in this embodiment, the second support arm 42 can slide towards the first support arm 41, and in other embodiments, the second support arm 42 can be in other forms without too much limitation), so that the first support arm 41 and the second support arm 42 have a first state close to each other and a second state away from each other, and the sliding second support arm 42 can switch between the first state and the second state, so as to change the size of the clamping position 43, thereby facilitating quick taking and placing of the crank pin; furthermore, in order to further axially position the crankpin so that the crankpin can be maintained in a state of being coaxially arranged with the first opening 511 and the second opening 521 during drilling, a positioning column 6 is provided in the first opening 511, the positioning column 6 is adapted to a positioning hole in an end surface of the crankpin so that the positioning column 6 can be inserted into the crankpin through the positioning hole when the end surface of the crankpin abuts against the support portion 51, and since the positioning hole of the crankpin is located on the axis thereof, the positioning column 6 is inserted into the positioning hole to perform clamping and positioning in the axial direction of the crankpin, thereby improving the drilling accuracy.

A driving block 512 is arranged in the first opening 511, and one end of the positioning column 6 is screwed in the driving block 512.

In this embodiment, in order to adapt to different types of crankpins (or positioning holes of the crankpins), a driving block 512 is disposed in the first opening 511, and the positioning column 6 is screwed in the driving block 512, so that the positioning column 6 is detachably connected with the supporting portion 51 through the driving block 512, and therefore the positioning column 6 with different sizes can be replaced according to actual needs, and the positioning column 6 can be better attached to the inner wall of the positioning hole of the crankpin.

The driving block 512 is driven by a first cylinder disposed on the supporting portion 51, so that the driving block 512 and the positioning column 6 move synchronously along the axial direction of the first opening 511.

In this embodiment, in order to facilitate discharging after drilling, the driving block 512 is slidably disposed in the first opening 511 along the axial direction of the first opening 511, and is driven by a first cylinder (not shown) disposed on the supporting portion 51, after drilling is completed, the second supporting arm 42 drives the abutting portion 52 to gradually move in a direction away from the first supporting arm 41, and at this time, the first cylinder drives, and the driving block 512 and the positioning column 6 push the crank pin (part of the crank pin) out of the first opening 511, so that rapid discharging can be achieved; conversely, in order to facilitate the end surface of the crank pin to contact the supporting portion 51 (i.e., the bottom of the first opening 511) in the largest area during clamping, the telescopic portion of the first cylinder is retracted, so that the surface of the driving block 512 is flush with the bottom of the first opening 511, and the positioning column 6 can be inserted into the positioning hole of the crank pin.

A first limiting block 513 is screwed on one end of the supporting portion 51 close to the abutting portion 52, and the first limiting block 513 is a hollow cavity structure and is communicated with the first opening 511.

In this embodiment, as shown in fig. 3, in order to reduce the gap between the first opening 511 and the crank pin, a first limiting block 513 is screwed on one end of the supporting portion 51 close to the abutting portion 52, the first limiting block 513 can compensate the gap generated therebetween, and meanwhile, in order not to affect the installation of the crank pin, the first limiting block 513 is a hollow cavity structure so as to be communicated with the first opening 511; on the other hand, the first limiting blocks 513 arranged in the thread can be rapidly detached or installed, so that the first limiting blocks 513 with different sizes can be replaced according to crank pins with different models (namely, different diameters), and therefore the universality of the equipment is improved.

The support base 4 is provided with a moving slot 7, and the second support arm 42 is slidably disposed on the support base 4 through the moving slot 7, so that the second support arm 42 is close to or far away from the first support arm 41.

In this embodiment, in order to achieve the purpose that the second supporting arm 42 can slide on the supporting base 4, as shown in fig. 3, a moving slot 7 is provided on the supporting base 4, and the second supporting arm 42 is slidably provided on the moving slot 7 (the sliding direction of the second supporting arm 42 is driven in the present embodiment, which is a prior art, and is not described in detail here).

The abutting portion 52 is driven by a second cylinder provided in the second support arm 42 so that the abutting portion 52 approaches or separates from the support portion 51.

In this embodiment, in order to further position the crank pin in the axial direction, the abutting portion 52 is driven by a second cylinder (not shown) provided on the second support arm 42, and when both ends of the crank pin are respectively in contact with the support portion 51 and the abutting portion 52, the second cylinder is activated to push the abutting portion 52 to move in the direction of the support portion 51, so that the support portion 51 and the abutting portion 52 are in closer contact with both end faces of the crank pin. (in order to facilitate the unloading, prevent the crank pin from moving to gradually disengage from the supporting part 51 along with the abutting part 52, the present apparatus may further be provided with a connecting rod capable of moving up and down above the supporting base 4, the connecting rod is used for contacting with the crank pin when unloading, so that the abutting part 52 disengages from the crank pin along with the second supporting arm 42 quickly).

A second limiting block 522 is screwed in the second opening 521, and the second limiting block 522 is a hollow cavity structure and is communicated with the second opening 521.

In this embodiment, in order to reduce the gap between the second opening 521 and the crank pin, a second limiting block 522 is screwed in the second opening 521, the second limiting block 522 is used to compensate the gap, and meanwhile, the second limiting block 522 with different sizes can be replaced according to different types of crank pins (the principle is the same as that of the first limiting block 513); in order to facilitate the quick installation of the crank pin in the second opening 521, the second stopper 522 is a hollow structure so as to be communicated with the second opening 521.

An engaging portion 8 is slidably provided between the support portion 51 and the abutting portion 52, and a sliding direction of the engaging portion 8 is perpendicular to a sliding direction of the second support arm 42.

In this embodiment, since the crank pin is conveniently and rapidly installed in the clamping position 43 or the crank pin is not dropped when the crank pin is taken out, as shown in fig. 3, the engaging portion 8 is slidably provided between the supporting portion 51 and the abutting portion 52, the engaging portion 8 is driven by a third cylinder (not shown) so as to be capable of moving up and down and back, and the engaging portion 8 is used for supporting the crank pin when moving up; on the contrary, when the drill bit moves downwards, the drill bit 3 can be abducted, and the collision of the rest drill bits 3 is avoided.

The engaging portion 8 is opened with a V-shaped opening 9, and both ends of the V-shaped opening 9 face the supporting portion 51 and the abutting portion 52, respectively.

In the embodiment, as shown in fig. 5, since the crank pin is a cylindrical structure, in order to adapt to crank pins of different models, the engaging portion 8 is provided with a V-shaped opening 9, and two ends of the V-shaped opening 9 respectively face the supporting portion 51 and the abutting portion 52, so that the crank pin can fall into the V-shaped opening 9, and the crank pin is prevented from rolling or falling off on the engaging portion 8; further, be equipped with the cushion on the inner wall of V type mouth 9, the cushion can completely cut off the inner wall of V type mouth 9 and the surface of crank pin, avoids the edges and corners scratch crank pin of block portion 8.

Finally, it is noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present invention can be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the scope of the claims of the present invention.

Claims

1. A crankshaft pin oil hole drilling device comprises an operating platform and a drill bit arranged on the operating platform; it is characterized by also comprising:

the positioning column is coaxially arranged in the first opening.

2. The crankshaft pin oil hole drilling equipment as claimed in claim 1, wherein a driving block is arranged in the first opening, and one end of the positioning column is screwed in the driving block.

3. The apparatus for drilling the oil hole in the crankshaft pin according to claim 2, wherein said driving block is driven by a first cylinder provided on said supporting portion, so that said driving block and said positioning post move synchronously in the axial direction of said first opening.

4. The crankshaft pin oil hole drilling device according to claim 1, wherein a first limiting block is screwed on one end of the supporting portion close to the abutting portion, and the first limiting block is a hollow cavity structure and is communicated with the first opening.

5. The crankshaft pin oil hole drilling device according to any one of claims 1 to 4, wherein a moving slot is formed on the support base, and the second support arm is slidably disposed on the support base through the moving slot, so that the second support arm is close to or away from the first support arm.

6. The crankshaft pin oil drilling apparatus as claimed in any one of claims 1 to 4, wherein said abutting portion is driven by a second cylinder provided on said second supporting arm so as to be close to or away from said supporting portion.

7. The crankshaft pin oil hole drilling device according to any one of claims 1 to 4, wherein a second limiting block is screwed in the second opening, and the second limiting block is of a hollow cavity structure and is communicated with the second opening.

8. The crankshaft pin oil hole drilling device according to any one of claims 1 to 4, wherein an engaging portion is slidably provided between the supporting portion and the abutting portion, and a sliding direction of the engaging portion is perpendicular to a sliding direction of the second supporting arm.

9. The crankshaft pin oil hole drilling equipment as claimed in claim 8, wherein a V-shaped opening is opened on the engaging portion, and both ends of the V-shaped opening face the supporting portion and the abutting portion respectively.

10. The crankshaft pin oil hole drilling equipment as claimed in claim 9, wherein an elastic pad is arranged on the inner wall of the V-shaped port.