CN215199227U

CN215199227U - End cover reaming die

Info

Publication number: CN215199227U
Application number: CN202121516261.0U
Authority: CN
Inventors: 申传春
Original assignee: Wuxi Shenbo Machinery Manufacturing Co ltd
Current assignee: Wuxi Shenbo Machinery Manufacturing Co ltd
Priority date: 2021-07-05
Filing date: 2021-07-05
Publication date: 2021-12-17
Anticipated expiration: 2031-07-05

Abstract

The utility model discloses an end cover reaming die, which provides the following technical scheme aiming at the problem of low reaming precision and comprises an upper movable die component and a fixed die component, wherein the fixed die component comprises a base, a fixed die plate fixed on the base and at least two positioning columns detachably connected with the base, the fixed die plate is fixedly provided with an end face shaping component, the end face shaping component is used for positioning an end cover, and when the end cover is pressed tightly, the shape of the end face of the end cover is fixed; go up the movable mould subassembly and include last movable mould backup pad, fixed connection in the reaming pole of last movable mould backup pad and can dismantle two at least movable mould guide pin bushings of connecting in last movable mould backup pad, the movable mould guide pin bushing is equipped with the through-hole, the reference column to the through-hole extension of movable mould guide pin bushing and with the minimum clearance fit between the through-hole. The positioning column is in clearance fit with the movable die guide sleeve to achieve accurate positioning between the hole expanding rod and the end cover, and hole expanding precision is improved.

Description

End cover reaming die

Technical Field

The utility model relates to a reaming mould technical field, more specifically say, it relates to an end cover reaming mould.

Background

The reaming die is a die for enlarging the inner diameter of a smaller basic hole.

At present, the chinese patent with the publication number CN204503937U discloses a motor end cover reaming device, which comprises a supporting beam, a main hydraulic cylinder, a left upright post support, a hydraulic cylinder push rod, a movable mold supporting plate, a spring, a movable mold outer support, a supporting hydraulic cylinder, a movable mold, a supporting hydraulic cylinder push rod, second grade push rod, the machine tool base, supporting platform left side spring, platform left branch vaulting pole, the platform backing plate, the reaming post, supporting platform right side spring, platform right branch vaulting pole, reaming platform and right stand support, install main hydraulic cylinder on the supporting beam, the one end of pneumatic cylinder push rod is installed on main hydraulic cylinder, the other end of pneumatic cylinder push rod is installed in the movable mould backup pad, two support pneumatic cylinders are installed to movable mould backup pad lower extreme, install the movable mould in the movable mould outer support, install reaming post and platform backing plate on the machine tool base, reaming platform lower extreme is equipped with platform left branch vaulting pole and platform right branch vaulting pole.

The motor end cover reaming device only places the motor end cover on the reaming platform, has no positioning structure, has low positioning precision, can not meet the requirement of concentricity between a basic hole of the motor end cover and a reaming column, and can not meet the reaming requirement of a high-precision workpiece, particularly the precision requirement is 10^-3The reaming of the end caps of automotive cushions in the meter range requires end cap reaming dies of higher positioning accuracy. Referring to fig. 1, the end cap 16 is in a stepped shaft shape, a base hole is formed inside the end cap 16, two first end surfaces 161 are respectively arranged at two ends of the end cap 16, and two second end surfaces 162 are respectively arranged at two ends of the step of the end cap 16.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims to provide an end cover reaming mould adopts the location structure of high accuracy, improves the reaming precision.

In order to achieve the above purpose, the utility model provides a following technical scheme:

an end cover reaming die comprises an upper moving die assembly and a fixed die assembly, wherein the fixed die assembly comprises a base, a fixed die plate fixed on the base and at least two positioning columns detachably connected to the base, the fixed die plate is fixedly provided with an end face shaping assembly, the end face shaping assembly is used for positioning an end cover, and when the end cover is pressed tightly, the shape of the end face of the end cover is fixed; go up the movable mould subassembly and include last movable mould backup pad, fixed connection in the reaming pole of last movable mould backup pad and can dismantle two at least movable mould guide pin bushings of connecting in last movable mould backup pad, the movable mould guide pin bushing is equipped with the through-hole, the reference column extend to the through-hole of movable mould guide pin bushing and with the minimum clearance fit between the through-hole.

By adopting the technical scheme, the end cover is placed on the end face shaping assembly, so that the end cover is accurately positioned on the fixed template. The upper movable die supporting plate drives the movable die guide sleeve to move towards the positioning column, and the hole expanding rod penetrates through the base hole of the end cover. The positioning column is in minimum clearance fit with the movable mould guide sleeve, so that the hole expanding rod is accurately positioned on the fixed mould plate, the concentricity of the hole expanding rod and a basic hole of the end cover meets the requirement, the hole expanding precision is improved, and the positioning column and the movable mould guide sleeve can conveniently move. When the abrasion between the positioning column and the movable mold guide sleeve is large, the movable mold guide sleeve is detached from the upper movable mold support plate, the movable mold guide sleeve is replaced, the positioning column is detached from the base, the positioning column is replaced, and the reaming precision is guaranteed. In addition, in the reaming process, the end cover is possibly stretched towards two ends due to the tensile force, when the end cover is pressed between the upper movable die supporting plate and the end face shaping assembly, the shape of the end face of the end cover is shaped on the end face shaping assembly, the length of the end cover is pressed to the original length, and the change of the appearance of the end cover caused by reaming is avoided.

Further, the reaming rod comprises a guide part and at least two reaming parts, the guide part is arranged at one end, far away from the upper movable die supporting plate, of the reaming rod, the diameter of each reaming part is larger than the basic hole of the end cover, and the diameter of the guide part is smaller than the basic hole of the end cover.

By adopting the technical scheme, the diameter of the guide part of the reaming rod is smaller than that of the basic hole, the reaming rod can be smoothly guided into the basic hole of the end cover, the diameter of the reaming part of the reaming rod is larger than that of the basic hole, the basic hole is extruded and expanded outwards, and the diameter expansion of the basic hole is realized. The hole extruded once can extrude the basic hole for at least two times by the at least two reaming parts due to the elastic recovery of the original small diameter, so that the basic hole is expanded for multiple times, and the expansion is effective. Repeated reaming can be completed through one-time pressing-in action, and the hole expanding device is simple in structure and convenient and fast to use.

The lower moving die supporting plate is connected to the fixed die plate in a sliding mode, and the buffer assembly is used for buffering pressing force between the reaming rod and the end cover during die assembly and assisting in separation of the reaming rod and the end cover during demolding.

By adopting the technical scheme, when the upper movable die supporting plate moves towards the fixed die plate, the buffer assembly on the lower movable die supporting plate buffers the pressing force of the upper movable die supporting plate, so that the hole expanding rod can slowly expand the end cover, the end cover is prevented from being pulled out of cracks by the too-fast pressing force, and the yield is ensured. When the die is removed, the upper movable die supporting plate stops pressing the lower movable die supporting plate, and the buffer assembly helps the hole expanding rod to be slowly separated from the end cover. Realize slow compound die and divide the mould, still guarantee the yields of reaming when guaranteeing that the reaming is effectual.

Further, the buffer assembly comprises a buffer rod fixedly connected to the lower movable die supporting plate and an elastic element arranged on the buffer rod, the fixed die plate is provided with a through hole for the buffer rod to pass through, one end of the elastic element is abutted to the lower movable die supporting plate, and the other end of the elastic element is abutted to the fixed die plate.

By adopting the technical scheme, the buffer rod penetrates through the through hole of the fixed die plate, the elastic element is compressed between the fixed die plate and the lower movable die supporting plate, the elastic element converts the pressing force of the upper movable die assembly into the elastic potential energy of the elastic element by utilizing the elasticity, and the pressing force between the upper movable die assembly and the fixed die assembly is buffered, so that the reaming rod slowly extends into the basic hole of the end cover, the stretching crack caused by the impact of the sudden pressing force on the end cover is prevented, the defects are reduced, and the yield is improved. In addition, after the hole expansion is finished, the pressing force is stopped to be applied, the elastic element converts elastic potential energy into kinetic energy due to elasticity, the lower movable die supporting plate is far away from the fixed die plate, the upper movable die supporting plate is far away from the fixed die plate, and therefore the hole expansion rod is driven to be far away from a basic hole of the end cover, and the slow die division is achieved.

Furthermore, the base is detachably connected with at least two fixed die guide sleeves, and the fixed die guide sleeves are fixedly connected with the positioning columns; and a flange is arranged at one end of the fixed die guide sleeve, and the end surface of the flange is mutually abutted against the end surface of the base.

By adopting the technical scheme, the end face of the flange is mutually abutted against the end face of the base, the contact area is increased, the fixed die guide sleeve and the base are more firmly fixed, and the positioning column and the base are more firmly fixed. When the locating column is abraded greatly, the fixed die guide sleeve is detached from the base, the fixed die guide sleeve and the locating column are replaced, and the locating precision of the hole expanding rod is guaranteed.

Further, the fixed die plate is fixedly connected with a reaming guide sleeve, the reaming guide sleeve is provided with a through hole, the reaming rod extends into the through hole of the reaming guide sleeve, and the reaming part of the reaming rod is in minimum clearance fit with the through hole of the reaming guide sleeve.

By adopting the technical scheme, when the reaming rod passes through the end cover, the reaming rod enters the through hole of the reaming guide sleeve. The reaming part of the reaming rod is in minimal clearance fit with the through hole of the reaming guide sleeve, so that the positioning between the reaming rod and the end cover is accurate, and the reaming precision is improved.

Furthermore, an anti-abrasion sleeve with a lubricating function is fixedly connected in the through hole of the movable die guide sleeve, and the anti-abrasion sleeve is in minimal clearance fit with the positioning column.

Adopt above-mentioned technical scheme, the abrasionproof sleeve provides the lubrication for the slide of reference column in the movable mould guide pin bushing, prevents that frequent slip from leading to the wearing and tearing of reference column and movable mould guide pin bushing, prevents the clearance grow between reference column and the movable mould guide pin bushing, guarantees reaming precision, increase of service life.

Furthermore, a guiding part with the diameter decreasing towards the direction of the movable mould guide sleeve is fixedly arranged at one end, close to the movable mould guide sleeve, of the positioning column.

By adopting the technical scheme, when the positioning column moves towards the movable mould guide sleeve, the smaller diameter of the leading-in part of the positioning column enables the positioning column to be smoothly led into the through hole of the movable mould guide sleeve, the diameter of the leading-in part gradually becomes larger, the positioning column completely extends into the through hole of the movable mould guide sleeve, and the positioning column is convenient to penetrate into the movable mould guide sleeve.

To sum up, the utility model discloses following beneficial effect has:

1. the positioning column is in clearance fit with the movable mould guide sleeve to realize accurate positioning between the hole expanding rod and the end cover;

2. the reaming rod is in minimal clearance fit with the reaming guide sleeve, so that the reaming precision is improved;

3. at least two reaming parts of the reaming rod enable the end cover to ream at least twice, and the reaming yield is improved.

Drawings

FIG. 1 is a schematic structural view of an end cap;

FIG. 2 is a schematic structural diagram of the present embodiment;

FIG. 3 is a cross-sectional view of the reamer spindle of this embodiment;

FIG. 4 is a partial cross-sectional view of the end face styling component of the present embodiment;

FIG. 5 is a partial cross-sectional view of the pilot portion of the reamer spindle of this embodiment;

fig. 6 is a cross-sectional view of the wear sleeve of the reamer spindle of this embodiment.

In the figure: 1. an upper movable mold supporting plate; 2. a movable mould guide sleeve; 3. a positioning column; 31. an introduction section; 4. fixing a template; 5. a base; 6. a hole expanding rod; 61. a guide portion; 62. a reaming section; 7. an end face sizing assembly; 71. a first hard pad; 72. a second hard pad; 73. a support; 74. a sensor; 8. a lower movable mold supporting plate; 9. a buffer rod; 10. an elastic element; 101. a stopper; 11. a fixed die guide sleeve; 111. a flange; 12. reaming the guide sleeve; 13. an anti-wear sleeve; 14. a mounting seat; 15. a guide plate; 151. a bending section; 16. an end cap; 161. a first end face; 162. a second end face; 17. and a limiting block.

Detailed Description

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

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications to the present embodiment without inventive contribution as required after reading the present specification, but all of them are protected by patent laws within the scope of the claims of the present invention.

An end cover reaming die, see fig. 2, comprises an upper moving die assembly, a lower moving die assembly arranged below the upper moving die assembly and a fixed die assembly.

Referring to fig. 2, the upper movable die assembly comprises an upper movable die supporting plate 1, two reaming rods 6 and four movable die guide sleeves 2, two mounting seats 14 are fixedly connected to the lower side surface of the upper movable die supporting plate 1, the two mounting seats 14 are fixedly connected with the two reaming rods 6 respectively, the four movable die guide sleeves 2 are connected to the upper movable die supporting plate 1 through bolts, and the two reaming rods 6 and the four movable die guide sleeves 2 are perpendicular to the upper movable die supporting plate 1.

Referring to fig. 5, each reamer 6 comprises a guide portion 61 and two reamer portions 62, the guide portion 61 is disposed at an end of the reamer 6 remote from the mounting seat 14, the diameter of the reamer portions 62 is larger than the base hole of the end cap 16, and the diameter of the guide portion 61 is smaller than the base hole of the end cap 16.

Referring to fig. 6, the movable mold guide sleeve 2 is provided with a through hole, the axis of the through hole of the movable mold guide sleeve 2 is perpendicular to the direction of the movable mold support plate 1, an abrasion-proof sleeve 13 is fixedly connected in the through hole of the movable mold guide sleeve 2, and the abrasion-proof sleeve 13 is made of graphite and embedded with a copper sleeve.

Referring to fig. 2 and 3, the lower die assembly comprises a lower die support plate 8 and a buffer assembly, the buffer assembly comprises two buffer rods 9 and two elastic elements 10, the lower die support plate 8 is parallel to the upper die support plate 1, the lower die support plate 8 is provided with two through holes for the two reaming rods 6 to pass through respectively, and the two buffer rods 9 are vertically and fixedly connected to the lower die support plate 8. The elastic element 10 is a helical compression spring, and the buffer rod 9 penetrates through a through hole of the helical compression spring. The lower movable mould supporting plate 8 is fixedly connected with two limiting blocks 17.

Referring to fig. 2 and 6, the fixed die assembly comprises a base 5, four fixed die guide sleeves 11, a fixed die plate 4 and two reaming guide sleeves 12, wherein the base 5 and the fixed die plate 4 are both parallel to a lower movable die supporting plate 8, the base 5 is fixedly connected with the fixed die plate 4, the reaming guide sleeves 12 are vertically bolted on the fixed die plate 4, the fixed die guide sleeves 11 are provided with through holes, the axis of the through holes of the fixed die guide sleeves 11 is perpendicular to the direction of the base 5, one end, close to the base 5, of the fixed die guide sleeves 11 is fixedly connected with a flange 111, the end face of the flange 111 is attached to the bottom face of the base 5, and the end part of the flange 111 is bolted with the base 5. Four positioning columns 3 are fixedly connected in through holes of the four fixed mold guide sleeves 11 respectively, the positioning columns 3 are in interference fit with the fixed mold guide sleeves 11, one ends, far away from the fixed mold guide sleeves 11, of the positioning columns 3 extend into graphite embedding copper sleeves of the movable mold guide sleeves 2 and are in minimal clearance fit with inner holes of the graphite embedding copper sleeves, one ends, close to the movable mold guide sleeves 2, of the positioning columns 3 are provided with leading-in portions 31, and the diameters of the leading-in portions 31 are gradually decreased towards the direction of the movable mold guide sleeves 2.

Referring to fig. 5, the reaming guide sleeve 12 is provided with a through hole for the reaming rod 6 to extend into, the through hole of the reaming guide sleeve 12 is coaxial with the reaming rod 6, and the reaming part 62 of the reaming rod 6 is in minimal clearance fit with the through hole of the reaming guide sleeve 12.

Referring to fig. 2, the stationary platen 4 is provided with a through hole through which the buffer rod 9 passes. The fixed dog 101 that is equipped with in one end of keeping away from lower movable mould backup pad 8 of buffer rod 9, buffer rod 9 pass the through-hole, and dog 101 offsets with the bottom surface of fixed die plate 4, prevents that buffer rod 9 from breaking away from out from fixed die plate 4.

Referring to fig. 4, two end face sizing assemblies 7 are fixedly connected to the fixed die plate 4, each end face sizing assembly 7 includes a support 73, a first hard gasket 71 and a second hard gasket 72, each of the first hard gasket 71 and the second hard gasket 72 is annular, a groove for placing the support 73 is provided on the top surface of the fixed die plate 4, the support 73 is fixedly connected to the fixed die plate 4, each of the first hard gasket 71 and the second hard gasket 72 is placed on the support 73, each of the first hard gasket 71 and the second hard gasket 72 is in minimal clearance fit with the support 73, the second hard gasket 72 is located below the first hard gasket 71, each of the first hard gasket 71 and the second hard gasket 72 is provided with a through hole for the reaming rod 6 to pass through, the first end face 161 of the end cap 16 passes through the first hard gasket 71 to contact with the end face of the second hard gasket 72, the first hard gasket 71 is fixedly provided with a cylindrical sensor 74, the axis of the sensor 74 is perpendicular to the end face of the first hard gasket 71, the second end face 162 of the end cap 16 is in contact with the end face of the sensor 74.

Referring to fig. 3, the lower movable mold supporting plate 8 is connected with two guiding plates 15 through bolts, the two guiding plates 15 are respectively arranged on two sides of the fixed mold plate 4 and are in small clearance fit with the side surfaces of the fixed mold plate 4, and one end, far away from the lower movable mold supporting plate 8, of each guiding plate 15 is fixedly provided with a bending part 151 bent towards the bottom surface of the fixed mold plate 4. When the lower movable mold supporting plate 8 moves upward, the guide plate 15 is driven to move upward until the bent portions 151 on both sides abut against the bottom surface of the fixed mold plate 4, and the lower movable mold supporting plate 8 is restricted from continuing to move upward.

Referring to fig. 2 and 4, when the upper movable die supporting plate 1 moves downwards, the positioning column 3 penetrates into the graphite inlaid copper bush of the movable die guiding sleeve 2, the reaming rod 6 moves downwards until the mounting seat 14 contacts with the lower movable die supporting plate 8 to drive the lower movable die supporting plate 8 to move downwards, one end of the helical compression spring contacts with the lower movable die supporting plate 8, the other end of the helical compression spring contacts with the fixed die plate 4, the reaming rod 6 penetrates through the basic hole of the end cover 16 to start reaming, the reaming rod 6 sequentially penetrates through the first hard gasket 71, the second hard gasket 72 and the reaming guiding sleeve 12, the bottom surface of the lower movable die supporting plate 8 contacts with the first end surface 161 of the end cover 16, and the continuous pressing is stopped until one end of the two limiting blocks 17, which is far away from the lower movable die supporting plate 8, abuts against the fixed die plate 4. The upper movable die supporting plate 1 is lifted, the lower movable die supporting plate 8 is bounced by the helical compression spring, the reaming rod 6 is moved out of the end cover 16, and the end cover 16 can be taken out of the first hard gasket 71.

It is above only the utility model discloses a preferred embodiment, the utility model discloses a scope of protection does not only confine above-mentioned embodiment, the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides an end cover reaming mould which characterized in that: the device comprises an upper moving die assembly and a fixed die assembly;

the fixed die assembly comprises a base (5), a fixed die plate (4) fixed on the base (5) and at least two positioning columns (3) detachably connected to the base (5), the fixed die plate (4) is fixedly provided with an end face shaping assembly (7), the end face shaping assembly (7) is used for positioning an end cover (16), and when the end cover (16) is pressed tightly, the shape of the end face of the end cover (16) is fixed;

go up the movable mould subassembly and include last movable mould backup pad (1), fixed connection in reaming pole (6) of last movable mould backup pad (1) and can dismantle two at least movable mould guide pin bushings (2) of connecting in last movable mould backup pad (1), movable mould guide pin bushing (2) are equipped with the through-hole, reference column (3) extend to the through-hole of movable mould guide pin bushing (2) and with the minimum clearance fit between the through-hole.

2. The end cap reaming die of claim 1, wherein: the reaming rod (6) comprises a guide portion (61) and at least two reaming portions (62), the guide portion (61) is arranged at one end, far away from the upper movable die supporting plate (1), of the reaming rod (6), the diameter of each reaming portion (62) is larger than the basic hole of the end cover (16), and the diameter of each guide portion (61) is smaller than the basic hole of the end cover (16).

3. The end cap reaming die of claim 1, wherein: the die comprises a fixed die plate (4), and is characterized by further comprising a lower moving die supporting plate (8) and a buffer assembly arranged on the lower moving die supporting plate (8), wherein the lower moving die supporting plate (8) is connected to the fixed die plate (4) in a sliding mode, the buffer assembly is used for buffering pressing force between the reaming rod (6) and the end cover (16) during die assembly, and the reaming rod (6) is separated from the end cover (16) during demolding.

4. The end cap reaming die of claim 3, wherein: the buffer assembly comprises a buffer rod (9) fixedly connected to a lower movable mould supporting plate (8) and an elastic element (10) arranged on the buffer rod (9), the fixed mould plate (4) is provided with a through hole for the buffer rod (9) to pass through, one end of the elastic element (10) is abutted to the lower movable mould supporting plate (8), and the other end of the elastic element (10) is abutted to the fixed mould plate (4).

5. The end cap reaming die of claim 1, wherein: the base (5) is detachably connected with at least two fixed die guide sleeves (11), and the fixed die guide sleeves (11) are fixedly connected with the positioning columns (3); one end of the fixed die guide sleeve (11) is provided with a flange (111), and the end face of the flange (111) is abutted against the end face of the base (5).

6. The end cap reaming die of claim 1, wherein: the fixed die plate (4) is fixedly connected with a reaming guide sleeve (12), the reaming guide sleeve (12) is provided with a through hole, the reaming rod (6) extends into the through hole of the reaming guide sleeve (12), and a reaming part (62) of the reaming rod (6) is in minimum clearance fit with the through hole of the reaming guide sleeve (12).

7. The end cap reaming die of claim 1, wherein: the wear-resistant device is characterized in that a wear-resistant sleeve (13) with a lubricating function is fixedly connected in the through hole of the movable die guide sleeve (2), and the wear-resistant sleeve (13) is in minimal clearance fit with the positioning column (3).

8. The end cap reaming die of claim 1, wherein: and a guiding part (31) with the diameter decreasing towards the direction of the movable mould guide sleeve (2) is fixedly arranged at one end of the positioning column (3) close to the movable mould guide sleeve (2).