CN220612436U - Bar cutter shearing device - Google Patents
Bar cutter shearing device Download PDFInfo
- Publication number
- CN220612436U CN220612436U CN202321853992.3U CN202321853992U CN220612436U CN 220612436 U CN220612436 U CN 220612436U CN 202321853992 U CN202321853992 U CN 202321853992U CN 220612436 U CN220612436 U CN 220612436U
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- CN
- China
- Prior art keywords
- blade
- sliding block
- fixed
- fixed blade
- seat
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- 238000010008 shearing Methods 0.000 title claims abstract description 21
- 238000005520 cutting process Methods 0.000 claims abstract description 20
- 238000010438 heat treatment Methods 0.000 claims description 4
- 229910000954 Medium-carbon steel Inorganic materials 0.000 claims description 3
- 238000009434 installation Methods 0.000 abstract description 10
- 230000002035 prolonged effect Effects 0.000 abstract description 5
- 239000002184 metal Substances 0.000 description 4
- 229910001208 Crucible steel Inorganic materials 0.000 description 1
- 229910001209 Low-carbon steel Inorganic materials 0.000 description 1
- 229910001315 Tool steel Inorganic materials 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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- Accessories And Tools For Shearing Machines (AREA)
Abstract
The utility model discloses a bar cutting machine shearing device which comprises a square sliding block blade, a square fixed blade, a sliding block blade seat and a square fixed blade seat, wherein semicircular arc-shaped cutting edges matched with the diameter of a cut bar are respectively arranged at the four sides of the square, and fastening screws are respectively screwed into the threaded through holes through stepped through holes, so that the sliding block blade is fixed on the sliding block blade seat, and the fixed blade is fixed on the fixed blade seat. The center of the sliding block blade and the center of the fixed blade are respectively provided with a cross key slot, the centers of the sliding block blade seat and the fixed blade seat are respectively transversely provided with a straight key slot, one side of the positioning key is embedded into the fixed straight key slot, and the other side of the positioning key is respectively embedded into the cross key slot. The utility model has simple structure, convenient installation and use, obviously prolonged service life, reduced use cost and improved use efficiency.
Description
Technical Field
The utility model relates to a cutting die of a metal section, in particular to a cutting die which is arranged on a bar cutting machine and used for cutting bars with medium and small specifications (the diameter is 50mm or less), and belongs to the technical field of metal punching and cutting.
Background
The small and medium-sized metal bars are cut rapidly using a cutting die mounted on a bar cutter to obtain the desired length dimension. The bar cutting machine generally adopts a crank sliding block mechanism or a hydraulic cylinder as driving power of a sliding block, and cuts off the metal bar through relative movement between the circular arc-shaped cutting edge of the sliding block blade arranged on the sliding block blade seat and the circular arc-shaped cutting edge of the fixed blade arranged on the fixed blade seat of the lower workbench.
At present, the slider blade and the fixed blade are vertically embedded in the corresponding slider blade seat mounting groove and fixed blade seat mounting groove respectively, and are fixedly connected with the slider blade seat or the fixed blade seat respectively through 2 fastening screws, and the bottom surface of the slider blade and the bottom surface of the fixed blade are respectively supported on the corresponding bottom positioning surface of the slider blade seat mounting groove and the bottom positioning surface of the fixed blade seat mounting groove. The sliding block blade and the fixed blade are both made of alloy tool steel, and the quenching hardness of the sliding block blade and the fixed blade reaches HRC 58-64. The slider blade seat and the fixed blade seat are welded by cast steel or low carbon steel, and the hardness of the slider blade seat and the fixed blade seat is far lower than those of the slider blade and the fixed blade. When the bar is cut off, the bottom surfaces of the installation groove of the sliding block blade seat and the bottom surfaces of the installation groove of the fixed blade seat bear huge shearing forces transmitted instantaneously when the bar is cut off, and when the number of the cut bars is not large, the bottom positioning surfaces of the installation groove of the sliding block blade seat and the bottom positioning surfaces of the installation groove of the fixed blade seat collapse and deform, so that 2 fastening screws bear huge shearing forces to be sheared and lose efficacy, and a new sliding block blade seat, a new fixed blade seat, a new sliding block blade and a new fixed blade are required to be stopped and replaced, so that the operation efficiency is reduced, and the manufacturing cost is increased.
Disclosure of Invention
The utility model aims to provide a bar cutting machine shearing device with simple structure and long service life.
The utility model is realized by the following technical scheme:
the bar cutter shearing device comprises a sliding block blade and a fixed blade which are the same in structure, wherein the sliding block blade seat and the fixed blade seat are vertically embedded and positioned in a sliding block blade seat mounting groove; the sliding block blade and the fixed blade are square, and semicircular arc-shaped cutting edges matched with the diameters of the cut bars are respectively arranged in the centers of four sides of the square; the sliding block blade and the fixed blade are respectively provided with 4 threaded through holes which are arranged in a square manner, and the square center is the center of the sliding block blade or the center of the fixed blade; the slider blade seat and the fixed blade seat are respectively provided with 4 stepped through holes corresponding to the positions of the threaded through holes, and the fastening screws are respectively screwed into the threaded through holes through the stepped through holes, so that the slider blade is fixed on the slider blade seat, and the fixed blade is fixed on the fixed blade seat.
The object of the present utility model can be further achieved by the following technical means.
Further, the center of the sliding block blade and the center of the fixed blade are respectively provided with a cross key slot, the centers of the sliding block blade seat and the fixed blade seat are respectively transversely provided with a straight key slot, and the straight key slots respectively correspond to the transverse slot positions of the cross key slots; one side of the positioning key is embedded into a straight key slot, and the positioning key is respectively fixed in the straight key slot of the sliding block blade seat and the straight key slot of the fixed blade seat through a central screw; the other sides of the positioning keys are respectively embedded into the cross key grooves, so that the sliding block blade is positioned on the sliding block blade seat, and the fixed blade is positioned on the fixed blade seat.
Further, the relation among the depth A of the cross key slot, the depth B of the straight key slot and the thickness C of the positioning key is as follows: a+b-c=2 to 2.5mm.
Furthermore, the positioning key is made of high-quality medium carbon steel, and the heat treatment hardness of the positioning key is HRC 26-32.
The square sliding block blade and the square fixed blade can increase one semicircular arc-shaped cutting edge of the existing bar shearing blade to four semicircular arc-shaped cutting edges, so that the service lives of the sliding block blade and the square fixed blade are prolonged to 4 times that of the existing bar shearing blade. One side of the positioning key is respectively embedded in the cross key grooves corresponding to the sliding block blade and the fixed blade, the other side of the positioning key is respectively embedded and fixed in the straight key grooves corresponding to the sliding block blade seat and the fixed blade seat, and when bars are sheared, the positioning key subjected to heat treatment bears most of shearing force transmitted instantaneously when the bars are cut off, so that the shearing force born by the bottom positioning surface of the installation groove of the sliding block blade seat and the bottom positioning surface of the installation groove of the fixed blade seat is obviously reduced, and the bottom positioning surface of the installation groove of the sliding block blade seat and the bottom positioning surface of the installation groove of the fixed blade seat are effectively protected, so that the bar cannot collapse and deform; meanwhile, the number of the fastening screws is increased from 2 to 4, and once the fastening screws need to bear shearing load, the shearing stress of the fastening screws is reduced to 1/2 of the existing shearing stress, so that the use reliability of the fastening screws is obviously improved. The utility model has simple structure, convenient installation and use, obviously prolonged service life, reduced use cost and improved use efficiency.
Advantages and features of the utility model will be illustrated and explained by the following non-limiting description of preferred embodiments, given by way of example only with reference to the accompanying drawings.
Drawings
FIG. 1 is a front view of a stationary blade;
FIG. 2 is a front view of the stationary blade mount;
fig. 3 is a cross-sectional view of the present utility model.
Detailed Description
The utility model is further described below with reference to the drawings and examples.
As shown in fig. 1 to 3, the present embodiment includes a slider blade 1 and a fixed blade 2 having the same structure, a slider blade holder 3 and a fixed blade holder 4, the slider blade 1 is vertically inserted and positioned in a slider blade holder mounting groove 31, the slider blade holder 3 is vertically fixed in a slider lower end of the bar cutter, the fixed blade 2 is vertically inserted and positioned in a fixed blade holder mounting groove 41, the fixed blade holder 4 is vertically fixed on a lower table side of the bar cutter, and the slider blade shearing surface 11 and the fixed blade shearing surface 21 are adjacent up and down.
The sliding block blade 1 and the fixed blade 2 are square, and semicircular cutting edges 12 matched with the diameter of the cut bar are respectively arranged in the centers of the four sides of the square. The slider blade 1 and the fixed blade 2 are respectively provided with 4 threaded through holes 13 which are arranged in a square shape, and the square center is the center of the slider blade 1 or the center of the fixed blade 2, so that the slider blade 1 or the fixed blade 2 can be rotated by 90 degrees to use the other semicircular arc-shaped cutting edge 12. The slider blade holder 3 and the fixed blade holder 4 are respectively provided with 4 stepped through holes 32 corresponding to the positions of the threaded through holes 13, and the fastening screws 5 are respectively screwed into the threaded through holes 13 through the stepped through holes 32, thereby fixing the slider blade 1 on the slider blade holder 3 and the fixed blade 2 on the fixed blade holder 4.
The center of the sliding block blade 1 and the center of the fixed blade 2 are respectively provided with a cross key groove 14, the centers of the sliding block blade seat 3 and the fixed blade seat 4 are respectively transversely provided with a straight key groove 22, and the straight key grooves 22 respectively correspond to the transverse grooves 141 of the cross key grooves 14. The positioning key 7 is embedded into the straight key groove 22 at one side, and the positioning key 7 is respectively fixed in the straight key groove 22 of the slider blade seat 3 and the straight key groove 22 of the fixed blade seat 4 through the center screw 6. The other sides of the positioning keys 7 are respectively embedded into the cross key grooves 14, so that the sliding block blade 1 is positioned in the sliding block blade seat 3, and the fixed blade 2 is positioned in the fixed blade seat 4. The cross key groove 14 enables the sliding block blade 1 and the fixed blade 2 to be still jointed with the positioning key 7 after rotating for 90 degrees respectively, so that the bottom positioning surface 311 of the sliding block blade seat mounting groove and the bottom positioning surface 411 of the fixed blade seat mounting groove can be effectively protected from collapsing and deforming, the service lives of the sliding block blade seat 3 and the fixed blade seat 4 are prolonged, and the reliability of the utility model is improved.
The positioning key 7 is made of high-quality medium carbon steel, the heat treatment hardness of the positioning key is HRC 26-32, and the strength and the rigidity of the positioning key 7 are improved, so that the positioning key 7 cannot generate plastic deformation when bearing most of shearing force transmitted from the moment of cutting off the bar, and the service life of the positioning key is prolonged.
In this embodiment, the relation among the depth of the cross key slot a, the depth of the straight key slot B and the thickness of the positioning key C is as follows: a+b-c=2.2 mm, the vertical sides of the slider blade 1 and the slider blade mount groove 31 can be ensured, and the vertical sides of the fixed blade 2 and the fixed blade mount groove 41 are closely attached, thereby prolonging the service life of the present utility model.
In addition to the above embodiments, other embodiments of the present utility model are possible, and all technical solutions formed by equivalent substitution or equivalent transformation are within the scope of the present utility model.
Claims (4)
1. The bar cutter shearing device comprises a sliding block blade and a fixed blade which are the same in structure, wherein the sliding block blade seat and the fixed blade seat are vertically embedded and positioned in a sliding block blade seat mounting groove; the cutting device is characterized in that the sliding block blade and the fixed blade are square, and semicircular arc-shaped cutting edges matched with the diameter of the cut bar are respectively arranged in the centers of four sides of the square; the sliding block blade and the fixed blade are respectively provided with 4 threaded through holes which are arranged in a square manner, and the square center is the center of the sliding block blade or the center of the fixed blade; the slider blade seat and the fixed blade seat are respectively provided with 4 stepped through holes corresponding to the positions of the threaded through holes, and the fastening screws are respectively screwed into the threaded through holes through the stepped through holes, so that the slider blade is fixed on the slider blade seat, and the fixed blade is fixed on the fixed blade seat.
2. The bar cutter shearing device as recited in claim 1, wherein the center of the sliding block blade and the center of the fixed blade are respectively provided with a cross key slot, the center of the sliding block blade seat and the center of the fixed blade seat are respectively transversely provided with a straight key slot, and the straight key slots respectively correspond to the transverse slot positions of the cross key slots; one side of the positioning key is embedded into a straight key slot, and the positioning key is respectively fixed in the straight key slot of the sliding block blade seat and the straight key slot of the fixed blade seat through a central screw; the other sides of the positioning keys are respectively embedded into the cross key grooves, so that the sliding block blade is positioned on the sliding block blade seat, and the fixed blade is positioned on the fixed blade seat.
3. The bar cutter shearing device as recited in claim 2, wherein the relationship of the cross key slot depth a, the linear key slot depth B and the positioning key thickness C: a+b-c=2 to 2.5mm.
4. The bar cutter shearing device as recited in claim 2, wherein the positioning key is made of high-quality medium carbon steel, and the heat treatment hardness of the positioning key is HRC 26-32.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321853992.3U CN220612436U (en) | 2023-07-14 | 2023-07-14 | Bar cutter shearing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321853992.3U CN220612436U (en) | 2023-07-14 | 2023-07-14 | Bar cutter shearing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220612436U true CN220612436U (en) | 2024-03-19 |
Family
ID=90217023
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321853992.3U Active CN220612436U (en) | 2023-07-14 | 2023-07-14 | Bar cutter shearing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220612436U (en) |
-
2023
- 2023-07-14 CN CN202321853992.3U patent/CN220612436U/en active Active
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