Surface heat treatment device for hard alloy machining

Abstract

The utility model discloses a surface heat treatment device for hard alloy processing. The surface heat treatment device comprises a rotary table, a rotary driving mechanism, a workpiece clamp, a lifting mechanism, a double-shaft adjusting mechanism, a high-frequency power supply and a heating coil, the multiple workpiece clamps are arranged in the circumferential direction of the rotary table, the rotary driving mechanism is connected with the rotary table, the lifting mechanism is connected with the double-shaft adjusting mechanism, the high-frequency power source is arranged on the double-shaft adjusting mechanism, and the heating coils are used for conducting surface induction heating treatment on the hard alloy rod-shaped workpieces on the workpiece clamps. A plurality of workpiece clamps are arranged in the circumferential direction of the rotary table, a plurality of hard alloy workpieces can be loaded at the same time, continuous machining of pre-clamping, heat treatment and cooling is achieved, frequent shutdown for workpiece replacement is avoided, and production efficiency is improved; the spiral annular heating coil can ensure that the surface of a workpiece is uniformly heated, and heating blind areas and overheating areas are reduced; and the lifting mechanism is combined with the double-shaft adjusting mechanism, so that the position of the heating coil can be flexibly adjusted to meet the machining requirements of different workpieces.

Description

TECHNICAL FIELD

[0001] The utility model relates to heat treatment device field especially relates to a surface heat treatment device for hard alloy processing. BACKGROUND

[0002] As a kind of material with high hardness, high wear resistance and good fatigue resistance, hard alloy is widely used in industrial manufacturing field, especially in cutter, die and other parts production requiring high strength and wear resistance;In order to further improve the surface performance of hard alloy, surface heat treatment is usually needed to improve its surface hardness, wear resistance and fatigue resistance, thereby prolonging the service life of workpiece.

[0003] In prior art, traditional hard alloy surface heat treatment device has certain limitation when processing rod-shaped workpiece, first, existing heat treatment device can usually only process single workpiece, and the efficiency of one-time processing is low, and workpiece needs to be manually replaced after processing, which leads to frequent shutdown operation in production process, greatly affecting overall processing efficiency;Second, the relative position between heating coil and workpiece is difficult to flexibly adjust when existing high-frequency quenching device works, leading to uneven heating of workpiece surface in heating process, affecting final quenching effect and hardness distribution of hard alloy surface.

[0004] Therefore, prior art has defects and needs to be improved. INVENTION CONTENTS

[0005] The utility model solves technical problems that provide a kind of surface heat treatment device for hard alloy processing to improve production efficiency, improve workpiece heat treatment effect.

[0006] To achieve this purpose, the utility model adopts the following technical solutions: a kind of surface heat treatment device for hard alloy processing, including rotary table, rotary drive mechanism, workpiece clamp, lifting mechanism, double-shaft adjusting mechanism, high-frequency power supply and heating coil;

[0007] A plurality of workpiece clamps are arranged along the circumferential direction of the rotary table, and the workpiece clamps are used to clamp the hard alloy rod-shaped workpiece to be heat treated, and the rotary drive mechanism is connected with the rotary table to rotate and switch the processing position of the workpiece clamp.

[0008] The lifting mechanism is arranged at the side end of the rotary table, the lifting mechanism is connected with the double-shaft adjusting mechanism, the movable end of the double-shaft adjusting mechanism is connected with the base, the high-frequency power supply is arranged on the base, the heating coil is connected with the positive and negative poles of the high-frequency power supply, the high-frequency power supply is used to provide high-frequency current for the heating coil, the heating coil is in spiral ring structure, and the heating coil is used to perform surface induction heating treatment on the hard alloy rod-shaped workpiece on the workpiece clamp.

[0009] According to the technical scheme, the surface heat treatment device for hard alloy machining, the workpiece clamp comprises a bottom plate, clamping plates, first clamping rollers, second clamping rollers, a connecting push plate and an eccentric clamping handle.

[0010] The bottom plate is arranged on the rotary table, the two clamping plates are arranged on the bottom plate in parallel, and the inner side wall of the clamping plate is provided with a plurality of semicircular clamping holes in the length direction, which are used to form positioning clamping holes for clamping the hard alloy rod-shaped workpiece when the two clamping plates are close to each other.

[0011] The two sides of the clamping plate are respectively provided with a first guide slope and a second guide slope, the width of the first guide slope and the second guide slope gradually decreases in the first direction, the first clamping roller is located at the side end of the first guide slope, and the second clamping roller is located at the side end of the second guide slope.

[0012] The connecting push plate is slidably connected with the side of the two clamping plates, the eccentric clamping handle is arranged on the bottom plate at the side end of the connecting push plate, and the eccentric clamping handle is used to drive the connecting push plate to move in the first direction, so that the two clamping plates are close to each other.

[0013] According to the technical scheme, the surface heat treatment device for hard alloy machining, the wall surface of the clamping plate close to the side of the eccentric clamping handle is provided with a sliding groove, and the wall surface of the connecting push plate is provided with a sliding block matched with the sliding groove.

[0014] According to the technical scheme, the surface heat treatment device for hard alloy machining, the lifting mechanism comprises a support seat, a driving motor, a lifter, guide sliding rods and a lifting seat.

[0015] The lifter is arranged on the support seat, the output shaft of the driving motor is connected with the input end of the lifter, the output shaft of the lifter is connected with the lifting seat, a plurality of guide sliding rods are vertically arranged on the support seat, and the guide sliding rods are slidably connected with the lifting seat through linear bearings.

[0016] According to the technical scheme, the surface heat treatment device for hard alloy machining, the biaxial adjusting mechanism comprises an X-axis adjusting assembly and a Y-axis adjusting assembly, the X-axis adjusting assembly is arranged on the lifting seat, and the movable end of the X-axis adjusting assembly is connected with the base through the Y-axis adjusting assembly.

[0017] Adopting the technical scheme, the surface heat treatment device for hard alloy machining further comprises a cooling fan, the cooling fan is arranged at the side of the rotary table, and an air outlet of the cooling fan is arranged towards the group of workpiece clamps, so as to cool the hard alloy rod-shaped workpiece after heat treatment.

[0018] Adopting the technical scheme, the surface heat treatment device for hard alloy machining further comprises a cooling fan, the cooling fan is arranged at the side of the rotary table, and an air outlet of the cooling fan is arranged towards the group of workpiece clamps, so as to cool the hard alloy rod-shaped workpiece after heat treatment.

[0019] Adopting the technical scheme, the surface heat treatment device for hard alloy machining further comprises a cooling fan, the cooling fan is arranged at the side of the rotary table, and an air outlet of the cooling fan is arranged towards the group of workpiece clamps, so as to cool the hard alloy rod-shaped workpiece after heat treatment.

[0020] Compared with the prior art, the surface heat treatment device for hard alloy machining has the following beneficial effects:

[0021] The plurality of workpiece clamps are arranged in the circumferential direction of the rotary table, so that a plurality of hard alloy rod-shaped workpieces can be simultaneously loaded, the workpiece on one workpiece clamp is being subjected to heat treatment, and other workpieces can be pre-clamped or cooled at the same time, when one workpiece is completed, the next workpiece can be moved to the heating position through the rotary driving mechanism, so that continuous machining is realized, and it is not necessary to frequently stop and change the workpiece, thereby greatly improving the production efficiency; the heating coil in the spiral ring structure can uniformly cover the workpiece surface in the alternating magnetic field, so that efficient and uniform heating is realized, and the heating blind area or overheating area is reduced; the lifting mechanism and the double-shaft adjusting mechanism are combined, so that the position of the heating coil can be flexibly adjusted to adapt to the machining requirements of different workpieces. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed in the following embodiment or prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and those skilled in the art can also obtain other drawings according to these drawings without creating any creative labor.

[0023] The structures, proportions, sizes, etc. shown in the drawings of the present application are only used to cooperate with the content disclosed in the specification, so that those skilled in the art can understand and read, and are not used to limit the implementation conditions of the present application, so they do not have technical significance. Any modification of structure, change of proportion relationship or adjustment of size, without affecting the effect and purpose of the present application, should still fall within the scope of the technical content disclosed by the present application.

[0024] Figure 1 It is a schematic diagram of the overall structure of the present application;

[0025] Figure 2The utility model discloses a protective cover mounting structure schematic view.

[0026] Figure 3 The utility model discloses a lifting mechanism structure schematic view.

[0027] Figure 4 The utility model discloses a heating coil mounting structure schematic view.

[0028] Figure 5 The utility model discloses a workpiece clamp is in clamping state structure schematic view.

[0029] Figure 6 The utility model discloses a workpiece clamp structure schematic view. DETAILED DESCRIPTION

[0030] In order to make the utility model of the utility model purpose, feature, advantage can be more obvious and easy to understand, below will combine the drawings in the utility model embodiment, the technical scheme in the utility model embodiment is clearly, completely described, obviously, the embodiment described below only a part of the embodiment of the utility model, not all the embodiment. Based on the embodiment in the utility model, all other embodiments obtained by the ordinary skill in the art without making creative labor are within the scope of the utility model protection.

[0031] In the description of the utility model, it is understood that the terms "upper", "lower", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation on the utility model. It should be noted that when a component is considered to be "connected" to another component, it can be directly connected to the other component or there can be a component disposed therebetween.

[0032] The technical scheme of the utility model will be further illustrated by specific embodiments in combination with the drawings.

[0033] As Figures 1 to 6 The utility model embodiment provides a surface heat treatment device for hard alloy processing, including revolving stage 1, rotation drive mechanism 2, workpiece clamp 3, lifting mechanism 4, biaxial adjusting mechanism 5, high frequency power supply 6 and heating coil 7.

[0034] A plurality of workpiece clamps 3 are arranged along the circumferential direction of the turntable 1, and are used to clamp the hard alloy rod-shaped workpieces to be heat treated. The rotary drive mechanism 2 is connected with the turntable 1 to rotate and switch the machining position of the workpiece clamps 3. By arranging a plurality of workpiece clamps 3, a plurality of hard alloy rod-shaped workpieces can be loaded at the same time. While the workpiece on one workpiece clamp 3 is being heat treated, other workpieces can be pre-clamped or cooled. When one workpiece completes the treatment, the next workpiece can be moved to the heating position by the rotary drive mechanism 2, so as to realize continuous machining without frequent shutdown and replacement of workpieces, thereby greatly improving the production efficiency.

[0035] The lifting mechanism 4 is arranged at the side end of the turntable 1, and is connected with the biaxial adjusting mechanism 5. The movable end of the biaxial adjusting mechanism 5 is connected with the base 50. The high-frequency power supply 6 is arranged on the base 50. The heating coil 7 is connected with the positive and negative electrodes of the high-frequency power supply 6. The high-frequency power supply 6 is used to provide high-frequency current for the heating coil 7. The heating coil 7 has a spiral ring structure, and is used to perform surface induction heating treatment on the hard alloy rod-shaped workpiece on the workpiece clamp 3. The spiral ring structure of the heating coil 7 can make the workpiece surface uniformly cover in the alternating magnetic field, so as to realize efficient and uniform heating, reduce the heating blind area or overheating area. The combination of the lifting mechanism 4 and the biaxial adjusting mechanism 5 can flexibly adjust the position of the heating coil 7 to adapt to the machining requirements of different workpieces.

[0036] As shown in FIG. 1, the workpiece clamps 3 are arranged along the circumferential direction of the turntable 1. The rotary drive mechanism 2 is connected with the turntable 1 to rotate and switch the machining position of the workpiece clamps 3. By arranging a plurality of workpiece clamps 3, a plurality of hard alloy rod-shaped workpieces can be loaded at the same time. While the workpiece on one workpiece clamp 3 is being heat treated, other workpieces can be pre-clamped or cooled. When one workpiece completes the treatment, the next workpiece can be moved to the heating position by the rotary drive mechanism 2, so as to realize continuous machining without frequent shutdown and replacement of workpieces, thereby greatly improving the production efficiency. Figure 5 and Figure 6As shown, further, the workpiece clamp 3 comprises a base plate 31, clamping plates 32, first clamping rollers 33, second clamping rollers 34, a connecting push plate 35, and an eccentric clamping handle 36. The base plate 31 is arranged on the rotary table 1. Two clamping plates 32 are arranged on the base plate 31 in parallel with each other. The inner side wall of each clamping plate 32 is provided with a plurality of semicircular clamping holes 320 along the length direction thereof. The semicircular clamping holes 320 are used to form positioning clamping holes for clamping the hard alloy rod-shaped workpieces when the two clamping plates 32 are close to each other. The two sides of each clamping plate 32 are respectively provided with a first guide inclined surface 321 and a second guide inclined surface 322. The widths of the first guide inclined surface 321 and the second guide inclined surface 322 gradually decrease along the first direction. The first clamping roller 33 is located at the side end of the first guide inclined surface 321, and the second clamping roller 34 is located at the side end of the second guide inclined surface 322. The connecting push plate 35 is slidably connected with the side portions of the two clamping plates 32. The eccentric clamping handle 36 is arranged on the base plate 31 at the side end of the connecting push plate 35. The eccentric clamping handle 36 is used to drive the connecting push plate 35 to move towards the first direction, so that the two clamping plates 32 are close to each other. When it is necessary to clamp the hard alloy rod-shaped workpieces, the operator can place the workpieces vertically in the positioning clamping holes, and then rotate the eccentric clamping handle 36 to move the connecting push plate 35 towards the first direction. At this time, with the movement of the clamping plates 32, the first guide inclined surface 321 and the second guide inclined surface 322 respectively abut against the first clamping roller 33 and the second clamping roller 34, thereby pushing the two clamping plates 32 to gradually close to each other, so as to stably clamp the hard alloy rod-shaped workpieces and prevent the workpieces from being deviated in position during the heat treatment process, thereby affecting the uniformity of heating and the heat treatment effect. The workpiece clamp 3 can clamp a plurality of hard alloy rod-shaped workpieces at one time, thereby greatly improving the processing efficiency of the equipment.

[0037] As shown in the drawings, Figure 6 Further, a sliding groove 323 is arranged on the wall surface of the clamping plate 32 close to the side of the eccentric clamping handle 36. A sliding block 351 is arranged on the wall surface of the connecting push plate 35 and is adapted to be connected with the sliding groove 323. In this way, the movement stability of the clamping plate 32 can be improved, and the two clamping plates 32 can be prevented from being laterally shaken when they are close to each other.

[0038] As shown in the drawings, Figure 3 and Figure 4As shown, further, the lifting mechanism 4 includes a support seat 41, a drive motor 42, a lifter 43, guide slide rods 44, and a lifting seat 45. The lifter 43 is arranged on the support seat 41. The output shaft of the drive motor 42 is connected to the input end of the lifter 43. The output shaft of the lifter 43 is connected to the lifting seat 45. The guide slide rods 44 are arranged vertically on the support seat 41. The guide slide rods 44 are slidably connected to the lifting seat 45 through linear bearings. The lifting mechanism 4 can drive the heating coil 7 to move up and down, so as to wrap the heating coil 7 around the external surface of the hard alloy rod-shaped workpiece. When the heating coil 7 is powered, an induced current, called eddy current, is generated in the workpiece. When the eddy current flows through the resistance in the workpiece, Joule heat is generated, so that the surface temperature of the workpiece rapidly rises, thereby achieving heating.

[0039] As shown in Figure 3 , further, the biaxial adjustment mechanism 5 includes an X-axis adjustment assembly 51 and a Y-axis adjustment assembly 52. The X-axis adjustment assembly 51 is arranged on the lifting seat 45. The movable end of the X-axis adjustment assembly 51 is connected to the base 50 through the Y-axis adjustment assembly 52. By arranging the X-axis adjustment assembly 51 and the Y-axis adjustment assembly 52, the position of the heating coil 7 can be flexibly adjusted on the horizontal plane, so that the device can adapt to workpieces of different sizes and shapes.

[0040] As shown in Figure 2 , further, the cooling fan 8 is arranged on the side of the turntable 1. The air outlet of the cooling fan 8 is arranged towards a group of the workpiece clamps 3, so as to cool the hard alloy rod-shaped workpiece after heat treatment. After heat treatment, the workpiece needs to be cooled to room temperature to obtain the required mechanical properties. The use of the cooling fan 8 can accelerate the cooling process of the workpiece, thereby improving production efficiency and shortening the production cycle.

[0041] As shown in Figure 1 , further, the number of the workpiece clamps 3 is four. By arranging the workpiece clamps 3 in this way, the rotation of the turntable 1 can sequentially drive each workpiece clamp 3 to enter the heating, cooling, or other processing stations, thereby forming a continuous production line, reducing the waiting time of the workpiece during processing, and improving the operating efficiency.

[0042] As shown in Figure 2 , further, the protective cover 9 is arranged inside the turntable 1. The arrangement of the protective cover 9 can isolate the turntable 1 and the workpiece from the outside, preventing the operator from contacting the high-temperature workpiece or the heating coil 7, thereby avoiding accidents.

[0043] The above-described above embodiments are only used to illustrate the technical solutions of the present application, and are not limited thereto; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that the technical solutions recorded in the foregoing embodiments can still be modified, or some technical features therein can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A surface heat treatment device for cemented carbide processing, characterized in that: It includes a turntable, a rotary drive mechanism, a workpiece fixture, a lifting mechanism, a biaxial adjustment mechanism, a high-frequency power supply, and a heating coil; A plurality of workpiece fixtures are arranged along the circumferential direction of the turntable, and the workpiece fixtures are used to clamp the hard alloy rod-shaped workpiece to be heat treated. The rotary drive mechanism is connected to the turntable to rotate and switch the processing position of the workpiece fixture; The lifting mechanism is arranged at the side end of the turntable, the lifting mechanism is connected to the biaxial adjustment mechanism, the movable end of the biaxial adjustment mechanism is connected to the base, the high-frequency power supply is arranged on the base, the heating coil is connected to the positive and negative poles of the high-frequency power supply, the high-frequency power supply is used to provide high-frequency current to the heating coil, the heating coil has a spiral ring structure, and the heating coil is used to perform surface induction heating treatment on the carbide rod-shaped workpiece on the workpiece fixture.

2. The surface heat treatment device for cemented carbide processing according to claim 1, characterized in that: The workpiece clamp comprises a base plate, a clamping plate, a first clamping roller, a second clamping roller, a connecting push plate and an eccentric clamping handle; The base plate is arranged on the turntable, and the two clamping plates are arranged on the base plate in parallel with each other. The inner side walls of the clamping plates are provided with a plurality of semicircular clamping holes along their length directions. The semicircular clamping holes are used to form positioning clamping holes for clamping the carbide rod-shaped workpiece when the two clamping plates are closed. A first guide slope and a second guide slope are respectively provided on both sides of the clamping plate, wherein the widths of the first guide slope and the second guide slope gradually decrease along a first direction, the first clamping roller is located at a side end of the first guide slope, and the second clamping roller is located at a side end of the second guide slope; The connecting push plate is slidably connected to the side portions of the two clamping plates, and the eccentric clamping handle is provided on the bottom plate at the side end of the connecting push plate. The eccentric clamping handle is used to drive the connecting push plate to move in a first direction so that the two clamping plates are close to each other.

3. The surface heat treatment device for cemented carbide processing according to claim 2, characterized in that: A sliding groove is provided on the wall surface of the clamping plate close to the eccentric clamping handle, and a sliding block adapted to be connected to the sliding groove is provided on the wall surface of the connecting push plate.

4. The surface heat treatment device for cemented carbide processing according to claim 1, characterized in that: The lifting mechanism includes a support base, a drive motor, a lifter, a guide slide and a lifting base; The lifter is arranged on the support seat, the output shaft of the drive motor is connected to the input end of the lifter, the output shaft of the lifter is connected to the lift seat, and a plurality of guide slides are vertically arranged on the support seat, and the guide slides are slidably connected to the lift seat through linear bearings.

5. The surface heat treatment device for cemented carbide processing according to claim 4, characterized in that: The dual-axis adjustment mechanism includes an X-axis adjustment component and a Y-axis adjustment component. The X-axis adjustment component is arranged on the lifting seat, and the movable end of the X-axis adjustment component is connected to the base through the Y-axis adjustment component.

6. The surface heat treatment device for cemented carbide processing according to claim 1, characterized in that: The utility model further comprises a cooling fan, which is arranged on the side of the turntable and has an air outlet facing a group of the workpiece clamps, so as to cool the hard alloy rod-shaped workpiece that has completed the heat treatment.

7. The surface heat treatment device for cemented carbide processing according to claim 1, characterized in that: The number of the workpiece fixtures is four.

8. The surface heat treatment device for cemented carbide processing according to claim 1, characterized in that: The utility model further comprises a protective cover, which covers the turntable inside the protective cover.

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