CN204434670U - Engine crank crank throw through hole quenching fixture - Google Patents
Engine crank crank throw through hole quenching fixture Download PDFInfo
- Publication number
- CN204434670U CN204434670U CN201420830563.9U CN201420830563U CN204434670U CN 204434670 U CN204434670 U CN 204434670U CN 201420830563 U CN201420830563 U CN 201420830563U CN 204434670 U CN204434670 U CN 204434670U
- Authority
- CN
- China
- Prior art keywords
- hole
- crank
- curved bar
- strongback
- camshaft
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Abstract
The utility model proposes a kind of engine crank crank throw through hole quenching fixture, comprise base plate, pillar, strongback, hold-down mechanism and steady brace; Circular bottom plate and circular strongback are coaxially connected to form skeleton construction by four pillars; The center of strongback is provided with pilot hole, the radial direction of strongback is provided with curved bar groove; Hold-down mechanism is arranged on the side relative with curved bar groove, comprise support plate, rotating shaft, pressing plate, camshaft and spanner, two pieces of support plates are oppositely arranged and parallel with curved bar trough rim, the through hole installing rotating shaft is provided with in a prelaminar part, rear portion is provided with the through hole installing camshaft, and spanner is fixed on one end of camshaft, and described pressing plate is door shape, two leg extends to curved bar groove both sides, and the rear side of pressing plate is in directly over camshaft; Steady brace is cylinder with the level.Advantageous Effects of the present utility model is the needs of the crank throw hole quenching that can meet different size model, and easy to operate, structure is simple, is easy to install and maintenance.
Description
Technical field
The utility model relates to engine crank crank throw through hole quenching technology, is related specifically to a kind of engine crank crank throw through hole quenching fixture.
Background technology
Engine crankshaft assembly comprises left and right two cranks, and the shape of described crank is similar to mushroom, and its integrated disc portions is referred to as shank usually, and its bar portion is referred to as curved bar usually.Be provided with the through hole press-fiting pitman shaft at shank, be usually referred to as crank throw through hole or crank throw hole.Described crank throw through hole and curved bar are provided with eccentricity, after press-fiting pitman shaft, form bent axle.For ensureing intensity and the mechanical property of crank throw through hole, usually need to carry out quench treatment to crank throw through-hole inner surface.Prior art engine crank crank throw through hole quenching method adopts high frequency or Frequency Induction Heating, and namely when crank, ruhmkorff coil extend in crank throw through hole, carries out induction heating to crank throw through-hole inner surface.Because crank throw through hole and curved bar are provided with eccentricity, therefore, be not rotate according to the axis of crank curved bar during crank, but rotate according to the axis of crank throw through hole.Therefore, when clamping crank, need the axis of crank throw through hole and pivot center to clamp on the same line.Prior art engine crank crank throw through hole quenching method adopts curved bar and the dual fixing mode of crank throw through hole to realize the location of crank throw through-bore axis, namely the crank throw pilot hole of axis and coaxial is set on fixture, the curved bar hole that curved bar penetrates is set in the position of setting eccentricity, before clamping, crank curved bar is inserted curved bar hole, steady brace is inserted crank throw pilot hole through crank throw through hole, after being gripped by crank, take off steady brace, crank throw through hole and coaxial can be ensured.Obviously, adopt aforesaid method to grip crank, the eccentricity on its fixture, crank throw pilot hole must be identical with the relative dimensions of crank to be quenched with curved bar hole size.Because the specifications and models of crank are more, therefore, need to process some sleeve clamps, and when changing crank to be quenched, also to change fixture frequently to go forward side by side Row sum-equal matrix, obviously, prior art engine crank crank throw through hole quenching method also exists needs many sleeve clamps for subsequent use and need to change fixture frequently, the problem such as cause tooling cost to increase and working (machining) efficiency is lower.
Summary of the invention
For the many sleeve clamps of needs solving the existence of prior art engine crank crank throw through hole quenching method are for subsequent use and need to change fixture frequently, cause the problems such as tooling cost increases and working (machining) efficiency is lower, the utility model proposes a kind of engine crank crank throw through hole quenching fixture.The utility model engine crank crank throw through hole quenching fixture, comprises base plate, pillar, strongback, hold-down mechanism and steady brace; Circular bottom plate and circular strongback are coaxially connected to form skeleton construction by four pillars; The center of strongback is provided with pilot hole, the radial direction of strongback is provided with curved bar groove; Hold-down mechanism is arranged on the side relative with curved bar groove, comprise support plate, rotating shaft, pressing plate, camshaft and spanner, two pieces of support plates are oppositely arranged and parallel with curved bar trough rim, be provided with the through hole installing rotating shaft in a prelaminar part, rear portion is provided with the through hole installing camshaft, and pressing plate is sleeved in rotating shaft, spanner is fixed on one end of camshaft, described pressing plate is door shape, and two leg extends to curved bar groove both sides, and the rear side of pressing plate is in directly over camshaft; Steady brace is cylinder with the level, and external diameter and the pilot hole diameter of small stair match, and external diameter and the crank throw bore dia of large step match.
Further, the utility model engine crank crank throw through hole quenching fixture, is provided with adjustment bolt in two leg terminations of pressing plate.
The Advantageous Effects of the utility model engine crank crank throw through hole quenching fixture is the needs of the crank throw hole quenching that can meet different size model, and easy to operate, structure is simple, is easy to install and maintenance.
Accompanying drawing explanation
Accompanying drawing 1 is the schematic three dimensional views of engine crank;
Accompanying drawing 2 is the schematic three dimensional views of the utility model engine crank crank throw through hole quenching fixture;
The schematic three dimensional views that accompanying drawing 3 decomposes for the utility model hold-down mechanism.
Below in conjunction with the drawings and specific embodiments, the utility model engine crank crank throw through hole quenching fixture is further described.
Embodiment
Accompanying drawing 1 is the schematic three dimensional views of engine crank, and as seen from the figure, the shape of engine crank is similar to mushroom, and its integrated disc portions is referred to as shank usually, and its bar portion is referred to as curved bar usually.Be provided with the through hole press-fiting pitman shaft at shank, be usually referred to as crank throw through hole or crank throw hole.Described crank throw through hole and curved bar are provided with eccentricity, after press-fiting pitman shaft, form bent axle.For ensureing intensity and the mechanical property of crank throw through hole, usually need to carry out quench treatment to crank throw through-hole inner surface.Prior art engine crank crank throw through hole quenching method adopts high frequency or Frequency Induction Heating, and namely when crank, ruhmkorff coil extend in crank throw through hole, carries out induction heating to crank throw through-hole inner surface.Because crank throw through hole and curved bar are provided with eccentricity, therefore, be not rotate according to the axis of crank curved bar during crank, but rotate according to the axis of crank throw through hole.
Accompanying drawing 2 is the schematic three dimensional views of the utility model engine crank crank throw through hole quenching fixture, and the schematic three dimensional views that accompanying drawing 3 decomposes for the utility model hold-down mechanism, in figure, 1 is base plate, and 2 is pillar, and 3 is strongback, 4 is hold-down mechanism, and 5 is steady brace, and 31 is pilot hole, 32 is curved bar groove, and 41 is pressing plate, and 42 is support plate, 43 is rotating shaft, 44 is spanner, and 45 is adjustment bolt, and 46 is camshaft.As seen from the figure, the utility model engine crank crank throw through hole quenching fixture, comprises base plate 1, pillar 2, strongback 3, hold-down mechanism 4 and steady brace 5; Circular bottom plate 1 and circular strongback 3 are coaxially connected to form skeleton construction by four pillars 2; The center of strongback 3 is provided with pilot hole 31, the radial direction of strongback 3 is provided with curved bar groove 32; Hold-down mechanism 5 is arranged on the side relative with curved bar groove 32, comprise support plate 42, rotating shaft 43, pressing plate 41, camshaft 46 and spanner 44, two pieces of support plates 42 are oppositely arranged and parallel with curved bar trough rim, the through hole installing rotating shaft 43 is provided with in support plate 42 front portion, rear portion is provided with the through hole installing camshaft 46, pressing plate 41 is sleeved in rotating shaft 43, spanner 44 is fixed on one end of camshaft 46, described pressing plate 41 is door shape, two leg extends to curved bar groove 32 both sides, and the rear side of pressing plate 41 is in directly over camshaft 46; Steady brace 5 is cylinder with the level, and external diameter and pilot hole 31 diameter of small stair match, and external diameter and the crank throw bore dia of large step match.When adopting the utility model engine crank crank throw through hole quenching fixture to carry out the quenching of crank throw hole, crank throw hole is aimed at pilot hole, curved bar and be in curved bar groove and be placed on strongback down, steady brace is inserted in pilot hole through crank throw hole, moving wrench, camshaft rotates under the drive of spanner, upwards pushed up at pressing plate rear portion, two legs of pressing plate front portion are pressed on crank, and crank is fixed on strongback.Then, take off steady brace, quench treatment can be carried out to crank throw hole.Because the external diameter of steady brace small stair and pilot hole diameter match, external diameter and the crank throw bore dia of large step match, and can ensure that crank throw hole is coaxial with pilot hole.Because strongback and base plate are coaxial, base plate coaxial with rotation axis (determining when fixture is installed), therefore, can ensure that crank throw hole is coaxial with rotation axis.For different size model crank, different steady braces can be adopted to meet the needs of different crank throw bore dia, and curved bar groove can meet the needs of different eccentricity and different curved bar diameter.Therefore, adopt the utility model engine crank crank throw through hole quenching fixture, only again need process shape, the simple steady brace of structure, the needs of the crank throw hole quenching of all size model can be met.For ensureing that pressing plate is to the snap-in force of different thickness crank, the utility model engine crank crank throw through hole quenching fixture is provided with adjustment bolt in the termination of pressing plate two legs, with the needs of satisfied different crank shank thickness.
Obviously, the Advantageous Effects of the utility model engine crank crank throw through hole quenching fixture is the needs of the crank throw hole quenching that can meet different size model, and easy to operate, structure is simple, is easy to install and maintenance.
Claims (2)
1. a large engine crank crank throw through hole quenching fixture, it is characterized in that, this fixture comprises base plate, pillar, strongback, hold-down mechanism and steady brace; Circular bottom plate and circular strongback are coaxially connected to form skeleton construction by four pillars; The center of strongback is provided with pilot hole, the radial direction of strongback is provided with curved bar groove; Hold-down mechanism is arranged on the side relative with curved bar groove, comprise support plate, rotating shaft, pressing plate, camshaft and spanner, two pieces of support plates are oppositely arranged and parallel with curved bar trough rim, be provided with the through hole installing rotating shaft in a prelaminar part, rear portion is provided with the through hole installing camshaft, and pressing plate is sleeved in rotating shaft, spanner is fixed on one end of camshaft, described pressing plate is door shape, and two leg extends to curved bar groove both sides, and the rear side of pressing plate is in directly over camshaft; Steady brace is cylinder with the level, and external diameter and the pilot hole diameter of small stair match, and external diameter and the crank throw bore dia of large step match.
2. engine crank crank throw through hole quenching fixture according to claim 1, is characterized in that, two leg terminations of pressing plate are provided with adjustment bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420830563.9U CN204434670U (en) | 2014-12-24 | 2014-12-24 | Engine crank crank throw through hole quenching fixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420830563.9U CN204434670U (en) | 2014-12-24 | 2014-12-24 | Engine crank crank throw through hole quenching fixture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204434670U true CN204434670U (en) | 2015-07-01 |
Family
ID=53602564
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420830563.9U Expired - Fee Related CN204434670U (en) | 2014-12-24 | 2014-12-24 | Engine crank crank throw through hole quenching fixture |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204434670U (en) |
-
2014
- 2014-12-24 CN CN201420830563.9U patent/CN204434670U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150701 Termination date: 20161224 |