CN216192646U - Frock is used in bent axle nitrogenize - Google Patents
Frock is used in bent axle nitrogenize Download PDFInfo
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- CN216192646U CN216192646U CN202122484198.3U CN202122484198U CN216192646U CN 216192646 U CN216192646 U CN 216192646U CN 202122484198 U CN202122484198 U CN 202122484198U CN 216192646 U CN216192646 U CN 216192646U
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- layer bracket
- crankshaft
- bottom layer
- nitriding
- bracket
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Abstract
The utility model discloses a crankshaft nitriding tool, which comprises a material tray, a bottom layer bracket and an upper layer bracket, wherein the material tray is arranged on the bottom layer bracket; the material tray is provided with a pin hole, the bottom of the bottom layer bracket is provided with a pin hole, the upper part of the bottom layer bracket is provided with a plurality of upward clamping grooves and pin holes, the distance and the number of the upward clamping grooves are set according to the radial size of the crankshaft, and the material tray is connected with the bottom layer bracket through a positioning pin in the position of the pin hole; the upper structure of the upper layer bracket is the same as that of the bottom layer bracket, and the lower part of the upper layer bracket is provided with a downward clamping groove and a pin hole; the utility model has the advantages that: the supporting position of the crankshaft is the crank of the crankshaft, and the forward through hole which is consistent with the axial direction of the crankshaft and the transverse through hole which is vertical to the axial direction of the crankshaft are arranged at the same time, so that the surface of the journal of the crankshaft to be nitrided is completely in nitriding atmosphere, the stable flowing of nitriding airflow is ensured, and the nitriding quality is improved; the original way of installing 10 crankshafts in one furnace is changed into the way of installing 30 crankshafts in three layers in one furnace, so that the nitriding production efficiency is improved.
Description
Technical Field
The utility model relates to the technical field of crankshaft machining, in particular to a tool device.
Background
In order to improve the fatigue strength of the crankshaft, the surface of the crankshaft is subjected to surface strengthening heat treatment in a surface nitriding mode, and the surface nitriding process of the crankshaft is carried out in a nitriding furnace. In order to ensure the surface nitriding effect of the crankshaft, when the crankshaft is placed in a nitriding furnace, the stable placement is ensured, and simultaneously, the surfaces of all main journals and connecting rod journals of the crankshaft are completely in nitriding atmosphere. On the other hand, in order to improve the production efficiency, the furnace charging quantity of the crankshafts needs to be improved as much as possible on the premise of ensuring the quality of the crankshafts nitrided in each furnace. The existing furnace charging mode is that crankshafts to be nitrided are supported by a layer of supporting frame, the furnace charging quantity of each furnace is 10, the furnace charging mode is low in production efficiency, and due to the blocking of the supporting device, partial position nitriding is not uniform.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problems, the utility model aims to provide a crankshaft nitriding tool, which comprises a material tray, a bottom layer bracket and an upper layer bracket; the material tray is provided with a pin hole, the bottom of the bottom layer bracket is provided with a pin hole, the upper part of the bottom layer bracket is provided with a plurality of upward clamping grooves and pin holes, the distance and the number of the upward clamping grooves are set according to the radial size of the crankshaft, and the material tray is connected with the bottom layer bracket through a positioning pin in the position of the pin hole; the upper structure of the upper layer bracket is the same as that of the bottom layer bracket, and the lower part of the upper layer bracket is provided with a downward clamping groove and a pin hole;
the downward clamping groove corresponds to the upward clamping groove in position, and the bottom layer bracket corresponds to the upper layer bracket in pin hole position;
the bottom layer bracket and the upper layer bracket are connected through a positioning pin in a pin shaft hole; the crank of the crankshaft is arranged between the upward clamping grooves;
the bottom layer bracket and the upper layer bracket are both provided with a forward through hole which is consistent with the axial direction of the crankshaft and a transverse through hole which is vertical to the axial direction of the crankshaft;
the forward through holes are arranged on the groove walls of the downward clamping groove and the upward clamping groove; the transverse through holes are formed in the outermost walls of the two ends of the bottom layer bracket and the upper layer bracket.
The bottom layer bracket is provided with 5 upward clamping grooves.
The upper bracket is provided with 5 downward clamping grooves.
The bottom layer bracket is 4 and is arranged in parallel.
The utility model has the advantages that: the supporting position of the crankshaft on the tool is the crank of the crankshaft, and the forward through hole which is consistent with the axial direction of the crankshaft and the transverse through hole which is vertical to the axial direction of the crankshaft are arranged at the same time, so that the surface of the journal of the crankshaft to be nitrided is completely in nitriding atmosphere, the stable flowing of nitriding airflow is ensured, and the nitriding quality is improved. Meanwhile, 10 crankshafts are installed in each furnace in the prior art and are changed into 30 crankshafts installed in three layers in one furnace, so that the nitriding production efficiency is improved.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a left side view of FIG. 1;
fig. 3 is a top view of fig. 1.
Detailed Description
The utility model is described in detail below with reference to the accompanying drawings, and as shown in the figures, the utility model comprises a tray 1, a bottom layer bracket 2 and an upper layer bracket 3.
The material tray is provided with pin holes, the bottom of the bottom layer bracket 2 is provided with pin holes, the upper part of the bottom layer bracket is provided with a plurality of upward clamping grooves 21 and pin holes, and the distance and the number of the upward clamping grooves are set according to the radial size of the crankshaft 5; the upper structure of the upper layer bracket 3 is the same as that of the lower layer bracket 2, and the lower part of the upper layer bracket 3 is provided with a downward clamping groove 31 and a pin hole;
the bottom layer bracket 2 and the upper layer bracket 3 are connected through a positioning pin 6 at the position of a pin hole; the crank of the crankshaft 5 is arranged between the upward clamping grooves;
in order to ensure uniform nitriding, the bottom layer bracket 2 and the upper layer bracket 3 are both provided with a forward through hole 8 which is consistent with the axial direction of the crankshaft and a transverse through hole 10 which is vertical to the axial direction of the crankshaft;
the forward through hole 8 is arranged on the groove wall of the downward clamping groove 31 and the upward clamping groove 21; the transverse through holes 10 are arranged on the outermost side walls at two ends of the bottom layer bracket 2 and the upper layer bracket 3.
The working principle of the utility model is as follows: fixing four bottom layer brackets 2 on the material tray 1 in parallel through positioning pins respectively, and supporting a bracket crankshaft between the upward clamping grooves 21 of the parallel bottom layer brackets 2; then, four upper-layer brackets 3 are placed on the bottom-layer bracket 2 through positioning pins 6, and downward clamping grooves 31 of the upper-layer brackets 3 correspond to upward clamping grooves 21 of the bottom-layer bracket 2 to prevent interference with a lower-layer crankshaft; the upper ends of the four upper-layer brackets 3 are provided with a second-layer crankshaft; similarly, a third tier of crankshafts is placed; a plurality of forward through holes 8 and transverse through holes 10 are formed in each layer of the bracket rib plate, so that the uniform nitriding of the crankshaft of the accessory at the position contacting with the bracket is ensured;
the supporting position of the crankshaft on the tool is the crank of the crankshaft, so that all the surfaces of main journals and connecting rod journals of the crankshaft are in nitriding atmosphere, and the nitriding quality is ensured.
Preferably, three layers (30 pieces) of crankshafts are arranged in each furnace, so that the nitriding production efficiency is improved.
Claims (4)
1. The utility model provides a frock is used in crankshaft nitrogenize which characterized in that: comprises a material tray, a bottom layer bracket and an upper layer bracket; the material tray is provided with a pin hole, the bottom of the bottom layer bracket is provided with a pin hole, the upper part of the bottom layer bracket is provided with a plurality of upward clamping grooves and pin holes, the distance and the number of the upward clamping grooves are set according to the radial size of the crankshaft, and the material tray is connected with the bottom layer bracket through a positioning pin in the position of the pin hole; the upper structure of the upper layer bracket is the same as that of the bottom layer bracket, and the lower part of the upper layer bracket is provided with a downward clamping groove and a pin hole;
the downward clamping groove corresponds to the upward clamping groove in position, and the bottom layer bracket corresponds to the upper layer bracket in pin hole position;
the bottom layer bracket and the upper layer bracket are connected through a positioning pin in a pin shaft hole; the crank of the crankshaft is arranged between the upward clamping grooves;
the bottom layer bracket and the upper layer bracket are both provided with a forward through hole which is consistent with the axial direction of the crankshaft and a transverse through hole which is vertical to the axial direction of the crankshaft;
the forward through holes are arranged on the groove walls of the downward clamping groove and the upward clamping groove; the transverse through holes are formed in the outermost walls of the two ends of the bottom layer bracket and the upper layer bracket.
2. The tool for nitriding of the crankshaft according to claim 1, wherein: the bottom layer bracket is provided with 5 upward clamping grooves.
3. The tool for nitriding of the crankshaft according to claim 1, wherein: the upper bracket is provided with 5 downward clamping grooves.
4. The tool for nitriding of the crankshaft according to claim 1, wherein: the bottom layer bracket is 4 and is arranged in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122484198.3U CN216192646U (en) | 2021-10-15 | 2021-10-15 | Frock is used in bent axle nitrogenize |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122484198.3U CN216192646U (en) | 2021-10-15 | 2021-10-15 | Frock is used in bent axle nitrogenize |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216192646U true CN216192646U (en) | 2022-04-05 |
Family
ID=80866882
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122484198.3U Active CN216192646U (en) | 2021-10-15 | 2021-10-15 | Frock is used in bent axle nitrogenize |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216192646U (en) |
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2021
- 2021-10-15 CN CN202122484198.3U patent/CN216192646U/en active Active
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