CN113088665B

CN113088665B - Special camshaft high-frequency quenching equipment

Info

Publication number: CN113088665B
Application number: CN202110314197.6A
Authority: CN
Inventors: 李宏; 张玉斌; 杨善华; 程强; 张义奎; 李海平; 黄永键
Original assignee: Shiyan Hongzhao Auto Accessories Industrial Co ltd
Current assignee: Shiyan Hongzhao Auto Accessories Industrial Co ltd
Priority date: 2021-03-24
Filing date: 2021-03-24
Publication date: 2023-02-03
Anticipated expiration: 2041-03-24
Also published as: CN113088665A

Abstract

The invention discloses special camshaft high-frequency quenching equipment, relates to the technical field of heat treatment equipment, and solves the problems that when the existing camshaft is quenched, an opening of an existing induction coil is easy to heat unevenly, burn, crack, uneven hardness, uneven depth of a quenching layer and the like are easy to occur during heating, cracks are easy to occur, and the product quality is influenced; the lower part of the front end surface of the mounting base is fixedly connected with a group of camshaft rotary driving pieces; the top of the mounting base is fixedly connected with a group of lifting driving pieces; the left side of the mounting base is connected with a group of lifting sliding seats in a sliding manner; the rear end face of the lifting sliding seat is fixedly connected with a group of sliding driving pieces. The invention solves the problems of burn, crack, uneven hardness, uneven depth of a quenching layer and the like in the heat treatment process, improves the quality of the camshaft, cleans oxidation residues on the surface of a part and improves the processing quality of the part.

Description

Special camshaft high-frequency quenching equipment

Technical Field

The invention relates to the technical field of heat treatment equipment, in particular to special high-frequency quenching equipment for a camshaft.

Background

The quenching is a heat treatment process of heating the steel to a temperature above a critical temperature Ac3 (hypoeutectoid steel) or Ac1 (hypereutectoid steel), preserving heat for a period of time to make the steel completely or partially austenitized, and then rapidly cooling to a temperature below Ms (or isothermal near Ms) at a cooling speed greater than a critical cooling speed to perform martensite (or bainite) transformation, so as to greatly improve the rigidity, hardness, wear resistance, fatigue strength, toughness and the like of the steel, and therefore, the camshaft is often required to be quenched in the camshaft machining process.

For example, application No.: the invention discloses a CN201510531499.3 intelligent full-automatic high-frequency quenching machine, which comprises: the automatic feeding and conveying device comprises an automatic feeding conveying belt, a distributing positioning mechanism, a feeding mechanical arm, an interval adjusting positioning mechanism, a rotating tip mechanism and a finished product discharging conveying belt. The invention relates to a new processing device which is suitable for high-frequency quenching of an optical axis and a step shaft in a full-automatic mode, so that a workpiece can be simultaneously subjected to rotation, heating, movement and spraying treatment, after quenching is finished, the workpiece automatically falls into a finished product blanking conveyer belt for recovery, the quenching processing hardness is uniform, a hardness layer and a transition region can be fully automatically adjusted according to production requirements, the operation mode is computer-intelligentized, the whole process does not need manual participation, the positioning is accurate, the rotating speed of a left material ejecting tip and a right material ejecting tip can reach more than 800 revolutions per minute, and the diameter range of the metal part suitable for processing is as follows: 5mm-80mm, the output can reach more than 600 pieces per hour, the high-frequency quenching quality is high, the speed is high, and the automation degree is high.

Based on the above, the existing camshaft generally carries out high-frequency heating through coil induction during quenching processing, and the existing induction coils all have an opening, so that the problems of uneven opening heating, burn, crack, uneven hardness, uneven depth of a quenching layer and the like easily occur during heating, cracks are easily caused, and the product quality is influenced; therefore, the existing requirements are not met, and a special camshaft high-frequency quenching device is provided for the requirement.

Disclosure of Invention

The invention aims to provide special camshaft high-frequency quenching equipment, which aims to solve the problems that the conventional camshaft generally carries out high-frequency heating through coil induction during quenching processing, the conventional induction coils are provided with one opening, the heating of the opening is uneven during heating, the problems of burning, cracking, uneven hardness, uneven depth of a quenching layer and the like are easily caused, the cracking is easily caused, and the product quality is influenced.

In order to achieve the purpose, the invention provides the following technical scheme: a special camshaft high-frequency quenching device comprises a mounting base; the lower part of the front end face of the mounting base is fixedly connected with a group of camshaft rotary driving parts; the lower part of the mounting base is rotatably connected with a group of camshaft fixing clamps; the top of the mounting base is fixedly connected with a group of lifting driving pieces; the left side of the mounting base is connected with a group of lifting sliding seats in a sliding manner; the rear end face of the lifting sliding seat is fixedly connected with a group of sliding driving pieces; the left end face of the lifting sliding seat is connected with a group of up-and-down sliding seats in a sliding mode.

Preferably, the camshaft rotary driving part further comprises a rotary driving worm, a group of rotary driving worms is coaxially and fixedly connected to a rotating shaft of the camshaft rotary driving part, the camshaft fixing clamp further comprises a rotary driven worm wheel, a group of rotary driven worm wheels is coaxially and fixedly connected to the bottom of the camshaft fixing clamp, and the rotary driving worm and the rotary driven worm wheels are meshed to form a worm and gear transmission mechanism.

Preferably, the lifting driving part further comprises a lifting driving lead screw, the bottom of the lifting driving part is coaxially and fixedly connected with a group of lifting driving lead screws, and the lifting driving lead screws and the lifting sliding seats are in threaded transmission connection to form a lead screw nut transmission pair together.

Preferably, the upper and lower sliding seat is further provided with a sliding guide groove, the front and rear end faces of the upper and lower sliding seat are provided with a group of sliding guide grooves, and the upper and lower sliding seat is connected with the lifting sliding seat in a sliding manner through the sliding guide grooves.

Preferably, the sliding driving part further comprises a sliding driving cam, a group of sliding driving cams are eccentrically and fixedly connected to a rotating shaft of the sliding driving part, the upper and lower sliding seats further comprise a sliding driven frame, a group of sliding driven frames are fixedly connected to the right sides of the upper and lower sliding seats, the sliding driven frame is sleeved on the outer side of the sliding driving cam, and the sliding driven frame and the sliding driving cam jointly form an equal-diameter cam transmission mechanism.

Preferably, the upper and lower sliding seat further comprises a cooling liquid pipe and cooling liquid nozzles, the top of the upper and lower sliding seat is fixedly connected with a group of cooling liquid pipes, ten groups of cooling liquid nozzles are arranged on the left side of the cooling liquid pipe in a circumferential array, and the ten groups of cooling liquid nozzles are installed downwards.

Preferably, the up-down sliding seat further comprises an induction heating assembly, four groups of induction heating assemblies are fixedly connected to the left side of the up-down sliding seat, and the shape of each induction heating assembly is consistent with that of the cam structure.

Preferably, the four groups of induction heating assemblies have the same shape, but the winding opening directions of the induction heating wires are different.

Preferably, the upper and lower sliding seat further comprises a washing water pipe, the top of the upper and lower sliding seat is fixedly connected with a group of washing water pipes, the front end of each washing water pipe is provided with a flat nozzle, the flat nozzle of each washing water pipe faces to the part to be processed, and each washing water pipe is connected with an external high-pressure water pipe.

Compared with the prior art, the invention has the beneficial effects that:

when the camshaft fixing clamp is used, the camshaft is fixed through the camshaft fixing clamp, the camshaft rotary driving piece drives the camshaft fixing clamp to rotate through a worm gear transmission mechanism formed by meshing a rotary driving worm and a rotary driven worm gear, the camshaft is rotated through the rotation of the camshaft fixing clamp, and the rotation of the camshaft is realized; the lifting driving piece drives the lifting sliding seat to slide up and down through a screw nut transmission pair formed by the threaded transmission connection of a lifting driving screw and the lifting sliding seat, so that the feeding of the height position is realized, and the quenching treatment on different height positions of the camshaft can be realized; the sliding driving piece drives the upper sliding seat and the lower sliding seat to slide up and down in a reciprocating manner through the equal-diameter cam transmission mechanism jointly formed by the sliding driven frame and the sliding driving cam, the gap between the two groups of induction heating assemblies is heated through the upper sliding mechanism and the lower sliding mechanism of the upper sliding seat and the lower sliding mechanism of the lower sliding seat, the induction openings of the induction heating assemblies are heated simultaneously, the heating uniformity of the camshaft is guaranteed, the camshaft is better quenched and processed, and the oxidized residues on the surface of a part are cleaned through high-pressure water for washing the flat nozzle of the water pipe, so that the processing quality of the part is improved.

According to the invention, four groups of induction heating assemblies with different opening positions are adopted, the up-and-down sliding of the induction heating assemblies is realized through the cam mechanism, the gap between the two groups of induction heating assemblies is heated, and the induction openings of the induction heating assemblies are heated simultaneously, so that the uniform heating of the camshaft is ensured, the camshaft is better quenched, the problems of burn, crack, uneven hardness, uneven depth of a quenching layer and the like in the heat treatment process are solved, the quality of the camshaft is improved, the oxidized residues on the surface of a part are cleaned, and the processing quality of the part is improved.

Drawings

FIG. 1 is a schematic side view of the present invention;

FIG. 2 is a schematic side view of a camshaft fixing fixture drive shaft of the present invention;

FIG. 3 is a schematic view of the side structure of the transmission shaft of the lifting sliding seat of the present invention;

FIG. 4 is a schematic structural view of the transmission shaft side of the up-down sliding seat of the present invention;

FIG. 5 is a schematic side view of the shaft of the up-down sliding seat of the present invention;

FIG. 6 is a schematic axial side view of an induction heating assembly of the present invention;

FIG. 7 is a schematic side view of an induction heating assembly according to the present invention;

FIG. 8 is a schematic view of the coolant tube side structure of the present invention;

in the figure: 1. installing a base; 2. a camshaft rotary drive; 201. rotating the drive worm; 3. a camshaft fixing clamp; 301. rotating the driven worm gear; 4. a lifting drive member; 401. lifting the driving screw; 5. a lifting sliding seat; 6. a sliding drive member; 601. a sliding drive cam; 7. an up-down sliding seat; 701. sliding the driven frame; 702. a sliding guide groove; 703. a coolant tube; 704. a cooling liquid spray head; 705. an induction heating assembly; 706. the water pipe is flushed.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

Referring to fig. 1 to 8, an embodiment of the present invention includes: a special camshaft high-frequency quenching device comprises a mounting base 1; the lower part of the front end surface of the mounting base 1 is fixedly connected with a group of camshaft rotary driving pieces 2; the lower part of the mounting base 1 is rotatably connected with a group of camshaft fixing clamps 3; the top of the mounting base 1 is fixedly connected with a group of lifting driving pieces 4; the left side of the mounting base 1 is connected with a group of lifting sliding seats 5 in a sliding manner; the rear end face of the lifting sliding seat 5 is fixedly connected with a group of sliding driving pieces 6; the left end surface of the lifting sliding seat 5 is connected with a group of up-down sliding seats 7 in a sliding manner.

Further, camshaft rotary driving piece 2 is still including rotary driving worm 201, a set of rotary driving worm 201 of coaxial fixedly connected with in camshaft rotary driving piece 2's the pivot, camshaft mounting fixture 3 is still including rotatory driven worm wheel 301, a set of rotatory driven worm wheel 301 of coaxial fixedly connected with in camshaft mounting fixture 3's bottom, rotary driving worm 201 and rotatory driven worm wheel 301 meshing constitute worm gear drive jointly, in use, camshaft rotary driving piece 2 drives camshaft mounting fixture 3 rotatory through the worm gear drive that constitutes jointly with rotatory driven worm wheel 301 meshing by rotary driving worm 201, the rotation to the camshaft is realized through camshaft mounting fixture 3's rotation.

Further, the lifting driving member 4 further comprises a lifting driving lead screw 401, the bottom of the lifting driving member 4 is coaxially and fixedly connected with a group of lifting driving lead screws 401, the lifting driving lead screws 401 and the lifting sliding seat 5 are in threaded transmission connection to form a lead screw nut transmission pair together, and in use, the lifting driving member 4 drives the lifting sliding seat 5 to slide up and down through the lead screw nut transmission pair formed by the lifting driving lead screws 401 and the lifting sliding seat 5 in threaded transmission connection together, so that feeding at a height position is realized.

Further, the up-down sliding seat 7 further comprises a sliding guide groove 702, a group of sliding guide grooves 702 are formed in the front end face and the rear end face of the up-down sliding seat 7, the up-down sliding seat 7 is connected with the lifting sliding seat 5 in a sliding mode through the sliding guide groove 702, and in use, the up-down sliding seat 7 is guided through the sliding guide groove 702.

Further, the sliding driving member 6 further comprises a sliding driving cam 601, a group of sliding driving cams 601 is eccentrically and fixedly connected to a rotating shaft of the sliding driving member 6, the up-down sliding seat 7 further comprises a sliding driven frame 701, a group of sliding driven frames 701 is fixedly connected to the right sides of the up-down sliding seat 7, the sliding driven frames 701 are sleeved on the outer side of the sliding driving cam 601, the sliding driven frames 701 and the sliding driving cam 601 jointly form an equal-diameter cam transmission mechanism, in use, the sliding driving member 6 drives the up-down sliding seat 7 to slide up and down in a reciprocating mode through the equal-diameter cam transmission mechanism formed by the sliding driven frames 701 and the sliding driving cam 601, and uniform heating of the camshaft is guaranteed through up-down sliding of the up-down sliding seat 7.

Further, the up-down sliding seat 7 further comprises a cooling liquid pipe 703 and cooling liquid nozzles 704, the top of the up-down sliding seat 7 is fixedly connected with a group of cooling liquid pipes 703, ten groups of cooling liquid nozzles 704 are arranged on the left side of the cooling liquid pipes 703 in a circumferential array, the ten groups of cooling liquid nozzles 704 are installed downwards, and in use, the ten groups of cooling liquid nozzles 704 spray water to the camshaft to rapidly cool the camshaft to realize quenching.

Further, the up-down sliding seat 7 further comprises an induction heating assembly 705, four groups of induction heating assemblies 705 are fixedly connected to the left side of the up-down sliding seat 7, the shape of the induction heating assembly 705 is consistent with that of the cam structure, and the cam shaft is heated through the induction heating assembly 705 in use.

Further, the four groups of induction heating assemblies 705 have the same shape, but the winding opening directions of the induction heating wires are different, so that the winding openings of the induction heating wires are prevented from being heated unevenly when in use.

Further, the up-down sliding seat 7 further comprises a washing water pipe 706, the top of the up-down sliding seat 7 is fixedly connected with a group of washing water pipes 706, the front end of the washing water pipe 706 is provided with a flat nozzle, the flat nozzle of the washing water pipe 706 faces the processed part, the washing water pipe 706 is connected with an external high-pressure water pipe, and in use, the high-pressure water of the flat nozzle of the washing water pipe 706 is used for cleaning the oxidation residues on the surface of the part, so that the processing quality of the part is improved.

The working principle is as follows: when the camshaft fixing device is used, the camshaft is fixed through the camshaft fixing clamp 3, the camshaft rotary driving piece 2 drives the camshaft fixing clamp 3 to rotate through a worm gear transmission mechanism formed by meshing the rotary driving worm 201 and the rotary driven worm gear 301 together, the camshaft is rotated through the rotation of the camshaft fixing clamp 3, and the rotation of the camshaft is realized; the lifting driving piece 4 drives the lifting sliding seat 5 to slide up and down through a screw nut transmission pair formed by the threaded transmission connection of the lifting driving screw 401 and the lifting sliding seat 5, so that the feeding of the height position is realized, and the quenching treatment on different height positions of the camshaft can be realized; the sliding driving piece 6 drives the upper and lower sliding seats 7 to slide up and down in a reciprocating manner through an equal-diameter cam transmission mechanism formed by the sliding driven frame 701 and the sliding driving cam 601, gaps between the two groups of induction heating assemblies 705 are heated through the upper and lower sliding of the upper and lower sliding seats 7, induction openings of the induction heating assemblies 705 are heated simultaneously, uniform heating of the camshaft is guaranteed, quenching processing is better performed on the camshaft, oxidation residues on the surface of a part are cleaned through high-pressure water of a flat nozzle of a flushing water pipe 706, and the processing quality of the part is improved.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. The special high-frequency quenching equipment for the camshaft is characterized in that: comprises a mounting base (1); the lower part of the front end face of the mounting base (1) is fixedly connected with a group of camshaft rotary driving pieces (2); the lower part of the mounting base (1) is rotatably connected with a set of camshaft fixing clamps (3); the top of the mounting base (1) is fixedly connected with a group of lifting driving pieces (4); the left side of the mounting base (1) is connected with a group of lifting sliding seats (5) in a sliding manner; the rear end face of the lifting sliding seat (5) is fixedly connected with a group of sliding driving pieces (6); the left end surface of the lifting sliding seat (5) is connected with a group of up-down sliding seats (7) in a sliding manner; the upper and lower sliding seat (7) further comprises an induction heating assembly (705), the left side of the upper and lower sliding seat (7) is fixedly connected with four groups of induction heating assemblies (705), and the shape of each induction heating assembly (705) is consistent with that of the cam; the four groups of induction heating assemblies (705) are the same in shape, but the winding opening directions of the induction heating wires are different.

2. The special camshaft high-frequency quenching equipment as claimed in claim 1, wherein: camshaft rotary driving spare (2) are still including rotary driving worm (201), a set of rotary driving worm (201) of coaxial fixedly connected with in the pivot of camshaft rotary driving spare (2), camshaft mounting fixture (3) are still including rotatory driven worm wheel (301), the coaxial fixedly connected with in bottom of camshaft mounting fixture (3) a set of rotatory driven worm wheel (301), rotary driving worm (201) constitute worm gear drive mechanism jointly with rotatory driven worm wheel (301) meshing.

3. The special camshaft high-frequency quenching equipment as claimed in claim 1, wherein: the lifting driving piece (4) further comprises a lifting driving lead screw (401), the bottom of the lifting driving piece (4) is coaxially and fixedly connected with a group of lifting driving lead screws (401), and the lifting driving lead screws (401) are in threaded transmission connection with the lifting sliding seat (5) to form a lead screw nut transmission pair together.

4. The special camshaft high-frequency quenching equipment as claimed in claim 1, wherein: the up-down sliding seat (7) is characterized by further comprising a sliding guide groove (702), a group of sliding guide grooves (702) are formed in the front end face and the rear end face of the up-down sliding seat (7), and the up-down sliding seat (7) is connected with the lifting sliding seat (5) in a sliding mode through the sliding guide grooves (702).

5. The special camshaft high-frequency quenching equipment as claimed in claim 1, wherein: the sliding driving piece (6) further comprises a sliding driving cam (601), a group of sliding driving cams (601) are eccentrically and fixedly connected to a rotating shaft of the sliding driving piece (6), the upper sliding seat (7) and the lower sliding seat (7) further comprise sliding driven frames (701), a group of sliding driven frames (701) are fixedly connected to the right sides of the upper sliding seat (7) and the lower sliding seat (7), the sliding driven frames (701) are sleeved on the outer side of the sliding driving cam (601), and the sliding driven frames (701) and the sliding driving cam (601) jointly form an equal-diameter cam transmission mechanism.

6. The special camshaft high-frequency quenching equipment as claimed in claim 1, wherein: the up-down sliding seat (7) further comprises a cooling liquid pipe (703) and cooling liquid spray nozzles (704), the top of the up-down sliding seat (7) is fixedly connected with a group of cooling liquid pipes (703), ten groups of cooling liquid spray nozzles (704) are distributed on the left side of each cooling liquid pipe (703) in a circumferential array mode, and the ten groups of cooling liquid spray nozzles (704) are installed downwards.

7. The special camshaft high-frequency quenching equipment as claimed in claim 1, wherein: the upper and lower sliding seat (7) further comprises a washing water pipe (706), the top of the upper and lower sliding seat (7) is fixedly connected with a group of washing water pipes (706), the front end part of each washing water pipe (706) is provided with a flat nozzle, the flat nozzles of the washing water pipes (706) face to the processed part, and the washing water pipes (706) are connected with an external high-pressure water pipe.