Gear grinding mechanism of hard alloy band saw blade

Abstract

The utility model discloses a hard alloy band saw blade gear grinding mechanism which comprises a base plate, a movable seat, a machine box, a motor, a grinding wheel and an air cylinder, positioning holes are formed in the four corners of a bottom plate of the movable seat, positioning columns matched with the positioning holes are arranged on the base plate, the machine box is fixedly connected to the movable seat, and the motor is movably connected with the machine box through a radian adjusting assembly. The motor is movably connected into the case, the grinding wheel is located outside the movable base and connected with the motor through a connecting shaft, the air cylinder is fixedly connected to the fixed body, and an air cylinder piston rod is fixedly connected to the side wall of the side, away from the movable base, of the top wall of the case.

Description

TECHNICAL FIELD

[0001] The utility model relates to a band saw blade equipment technical field, especially a kind of hard alloy band saw blade gear grinding mechanism. BACKGROUND

[0002] Gear grinding is the gear processing machine tool using grinding wheel as abrasive tool to process cylindrical gear or the tool face of some gears (helical gear, bevel gear etc.), mainly used to eliminate the deformation after heat treatment and improve gear accuracy;

[0003] Traditional bimetallic band saw blade adopts bimetal welding, after bimetal welding, tooth material and back material become an integral whole, then through gear cutting process, tooth shape is formed once, and hard alloy saw blade only cuts tooth to back material of saw blade, and spherical or cylindrical alloy is welded to tooth tip part of back material after cutting tooth, the spherical or cylindrical alloy needs to be processed through four processes of rake angle, relief angle, both sides and chamfer to form a tooth shape meeting processing requirements;

[0004] The process needs to preinstall band saw blade on table top, uses sending and pushing part to push the clamping tooth of saw blade to move, so that grinding wheel assembly intermittently collides with saw blade tooth to complete gear grinding, but the tooth groove depth and inclination degree of different specifications of band saw blade are different, so when grinding tooth for different band saw blades, the inclination of grinding wheel assembly or table top needs to be adjusted according to the specification of band saw blade in advance;

[0005] Therefore, there is an urgent need for a hard alloy band saw blade gear grinding mechanism to solve the above problems. INVENTION CONTENTS

[0006] The utility model aims at providing a hard alloy band saw blade gear grinding mechanism to solve the above problems.

[0007] In order to achieve the above object, the utility model adopts the following technical scheme: a hard alloy band saw blade gear grinding mechanism, comprising:

[0008] Base plate, movable seat, case, motor, grinding wheel and cylinder, movable seat bottom plate four corners are equipped with positioning hole, base plate is equipped with the positioning column matched with positioning hole, case is fixedly connected in movable seat, motor is movably connected with case through radian adjusting assembly, and motor is movably connected in case, grinding wheel is located outside movable seat, and it is connected with motor through connecting shaft, cylinder is fixedly connected on fixed body, and cylinder piston rod is fixedly connected on the side wall of the top wall of case away from movable seat.

[0009] Preferably, the radian adjusting assembly comprises two sets of U-shaped fixing plates, a plurality of elastic connecting assemblies, a cam assembly and a support frame, the U-shaped fixing plates are fixedly connected to the side walls of the motor close to the movable seat and close to the cylinder respectively, one end of the plurality of elastic connecting assemblies is symmetrically hinged to the side walls of the U-shaped fixing plates away from the motor, the other end is fixedly connected to the inner wall of the machine box, the cam assembly is movably connected in the machine box, the support frame is located between the machine box and the grinding wheel, and the support frame is fixedly connected to the movable seat, and the connecting shaft passes through the support frame and is connected with the support frame through a joint bearing.

[0010] Preferably, the elastic connecting assembly comprises an outer tube, an inner tube and a spring, the outer tube is fixedly connected to the inner wall of the machine box, one end of the inner tube is sleeved in the outer tube, the other end is hinged to the U-shaped fixing plate, and the spring is located in the outer tube and fixedly connected to the outer tube and the inner tube at two ends.

[0011] Preferably, the cam assembly comprises two sets of cams, two sets of rotating shafts, two sets of rotating discs and a transmission belt, the two sets of cams are located in the machine box and contact with the two sets of U-shaped fixing plates respectively, one end of the two sets of rotating shafts is bearing-connected to the inner wall of the machine box, the other end passes through the two sets of cams and the side wall of the machine box and is connected to the rotating discs located outside the machine box respectively, and the rotating shafts are key-connected with the cams and the rotating discs and bearing-connected with the machine box, and the transmission belt is wound on the two sets of rotating discs.

[0012] Preferably, the long axes of the two sets of cams are in a relative vertical state.

[0013] Preferably, one of the rotating discs is provided with a connecting hole and a hand crank matched with the connecting hole.

[0014] Preferably, a saw blade feeding groove is arranged on the base plate, a reverse convex groove matched with the position of the saw blade feeding groove is arranged at the bottom of the movable seat, and a saw blade locking assembly is arranged in the reverse convex groove.

[0015] Preferably, the saw blade locking assembly comprises two sets of hinged plates, two sets of locking plates and a plurality of locking columns, one end of the two sets of hinged plates is symmetrically hinged in the reverse convex groove, the other end is fixedly connected with the two sets of locking plates respectively, the plurality of locking columns are located on both sides of the saw blade feeding groove, one end of each locking column is fixedly connected to the base plate, the other end passes through the groove wall of the reverse convex groove and contacts with the hinged plate, and the locking column is slidingly connected with the movable seat.

[0016] Compared with the prior art, the radian adjusting assembly is arranged, the inclination degree of the motor located in the machine box is directly adjusted outside the machine box, the inclination degree of the grinding wheel connected with the motor through the connecting shaft is changed, and the purpose of being suitable for various specifications of band saw blades is achieved.

[0017] The radian adjusting assembly is arranged, the inclination degree of the motor located in the machine box is directly adjusted outside the machine box, the inclination degree of the grinding wheel connected with the motor through the connecting shaft is changed, and the purpose of being suitable for various specifications of band saw blades is achieved. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the grinding mechanism of the hard alloy band saw blade;

[0019] Figure 2 It is a schematic diagram of the cross-sectional structure of the grinding mechanism of the hard alloy band saw blade;

[0020] Figure 3 It is an enlarged schematic diagram of A in the accompanying Figure 2

[0021] Figure 4 It is a schematic diagram of the cross-sectional structure of the saw blade locking assembly in the utility model;

[0022] Figure 5 It is a schematic diagram of the cross-sectional structure inside the convex groove in the utility model.

[0023] In the figure: 1, base plate; 10, positioning column; 11, saw blade feeding groove; 2, movable seat; 20, positioning hole; 21, inverted convex groove; 22, saw blade locking assembly; 220, hinged plate; 221, locking plate; 222, locking upright; 3, machine box; 4, motor; 40, connecting shaft; 400, knuckle bearing; 5, grinding wheel; 6, air cylinder; 7, radian adjusting assembly; 70, U-shaped fixed plate; 71, elastic connecting assembly; 710, outer tube; 711, inner tube; 712, spring; 72, cam assembly; 720, cam; 721, rotating shaft; 722, rotating disc; 7220, connecting hole; 723, transmission belt; 73, support frame. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments.

[0025] Please refer to the accompanying Figures 1-5 A grinding mechanism of a hard alloy band saw blade, comprising:

[0026] Base plate 1, movable seat 2, machine box 3, motor 4, grinding wheel 5 and air cylinder 6, the movable seat 2 bottom plate four corners are provided with positioning holes 20, the base plate 1 is provided with positioning columns 10 matched with the positioning holes 20, the machine box 3 is fixedly connected to the movable seat 2, the motor 4 is movably connected with the machine box 3 through the radian adjusting assembly 7, and the motor 4 is movably connected in the machine box 3, the grinding wheel 5 is located outside the movable seat 2, which is connected with the motor 4 through the connecting shaft 40, the air cylinder 6 is fixedly connected to the fixed body, and the piston rod of the air cylinder 6 is fixedly connected to the side wall of the top wall of the machine box 3 away from the movable seat 2.​

[0027] The movable seat 2 is driven by the air cylinder 6 to move vertically, and then the motor 4 in the machine box 3 and the grinding wheel 5 outside the machine box 3 are driven to move vertically, so that the grinding wheel 5 contacts the saw blade to complete the tooth grinding operation. It should be noted that the radius of the grinding wheel 5 should be greater than the distance from the connecting shaft 40 to the movable seat 2, otherwise the lowest position of the grinding wheel 5 cannot contact the saw blade.

[0028] Specifically, the arc adjusting assembly 7 includes two groups of U-shaped fixed plates 70, a plurality of elastic connecting assemblies 71, a cam assembly 72, and a support frame 73. The U-shaped fixed plates 70 are fixedly connected to the side walls of the motor 4 near the movable seat 2 and near the air cylinder 6, respectively. One end of the plurality of elastic connecting assemblies 71 is symmetrically hinged to the side walls of the U-shaped fixed plates 70 away from the motor 4, and the other end is fixedly connected to the inner wall of the machine box 3. The cam assembly 72 is movably connected to the machine box 3. The support frame 73 is located between the machine box 3 and the grinding wheel 5, and is fixedly connected to the movable seat 2. The connecting shaft 40 passes through the support frame 73 and is connected to the support frame 73 through a joint bearing 400.

[0029] When the motor 4 and the grinding wheel 5 are adjusted in inclination by the arc adjusting assembly 7, the relative position of the motor 4 changes. In order to avoid the sliding of the motor position caused by the inclination of the motor, two groups of U-shaped fixed plates 70 are used to protect and position limit the motor 4. At the same time, when the U-shaped fixed plates 70 are inclined, the plurality of elastic connecting assemblies 71 are used to ensure the connection between the U-shaped fixed plates 70 and the machine box 3. In order to facilitate the inclination adjustment, the cam assembly 72 and the support frame 72 are provided. The cam assembly 72 adjusts the inclination of the motor 4 in the machine box 3, and the support frame 72 forms a lever structure with the motor 4, so as to achieve the purpose of adjusting the inclination of the grinding wheel 5 by the cam assembly 72.

[0030] Specifically, the elastic connecting assembly 71 includes an outer tube 710, an inner tube 711, and a spring 712. The outer tube 710 is fixedly connected to the inner wall of the machine box 3. The inner tube 711 is sleeved in the outer tube 710 at one end and is hinged to the U-shaped fixed plate 70 at the other end. The spring 712 is located in the outer tube 710, and its two ends are fixedly connected to the outer tube 710 and the inner tube 711, respectively.

[0031] When the U-shaped fixing plate 70 is inclined, the distance between the U-shaped fixing plate 70 and the inner wall of the cabinet 3 changes. In order to adapt to the change, a variable length sleeve structure is adopted. At the same time, considering that the angle between the inner tube 711 and the U-shaped fixing plate 70 also changes when the U-shaped fixing plate 70 is inclined, the inner tube 711 is hinged on the U-shaped fixing plate 70.

[0032] Specifically, the cam assembly 72 includes two groups of cams 720, two groups of rotating shafts 721, two groups of rotating discs 722, and a transmission belt 723. The two groups of cams 720 are located in the cabinet 3, and the two groups of cams 720 are in contact with the two groups of U-shaped fixing plates 70, respectively. One end of the two groups of rotating shafts 721 is bearing connected to the inner wall of the cabinet 3, and the other end passes through the two groups of cams 720 and the side wall of the cabinet 3, respectively, and is connected to the rotating disc 722 located outside the cabinet 3. The rotating shaft 721 is key connected with the cam 720 and the rotating disc 722, and is bearing connected with the cabinet 3. The transmission belt 723 is wound on the two groups of rotating discs 722.

[0033] By changing the relative position of the motor 4 through the cam 720, the inclination of the motor 4 is adjusted. Considering that only one group of cams 720 may cause a large vibration of the motor 4 in the working state, two groups of cams 720 are adopted to ensure the stability of the motor 4.

[0034] Since the motor 4, the connecting shaft 40, the support frame 73, and the grinding wheel 5 together constitute a lever mechanism, when the cam 720 in contact with the U-shaped fixing plate 70 rotates, it forces the U-shaped fixing plate 70 and the motor 4 to rotate around the support frame 73. In this rotation, the multiple groups of elastic connection assemblies 71 are in different positions, which ensure the stability of the U-shaped fixing plate 70 and the motor 4 by different extension amounts. After the motor 4 rotates, the grinding wheel 5 also rotates, thereby changing the inclination of the grinding wheel 5 itself, and achieving the purpose that the grinding wheel 5 can adapt to more specifications of the band saw blade. It should be noted that since the connecting shaft 40 needs to rotate around the support frame 73, the connecting shaft 40 cannot use a conventional bearing, but needs to use a matching joint bearing. After the grinding wheel 5 is adjusted, the cylinder 6 can drive the cabinet 3 and the movable seat 2 to move in the vertical direction as a whole, thereby changing the contact and tooth grinding of the grinding wheel 5 and the band saw blade. During this process, the relative position of the motor 4 and the support frame 73 does not change, so the inclination of the grinding wheel 5 does not change.

[0035] It should be noted that the setting of the cylinder 6 in the present application can drive the movable seat 2 and the machine box 3 to move in the vertical direction. Considering that the tooth groove of the part of the saw blade can be arc-shaped, the one-way displacement can not meet the tooth grinding requirements, therefore, the machine box can be provided with a horizontal cylinder or a similar structure to provide horizontal movement.

[0036] Specifically, the positions of the two groups of cam shafts 720 are in a relative vertical state.

[0037] Specifically, one of the turntables 722 is provided with a connecting hole 7220 and a hand crank matched with the connecting hole 7220; the turntable 722 serves as the original power to drive the cam 720 to rotate, and the connecting hole 7220 is reserved to be matched according to actual requirements, and a manual hand crank can be used, or other driving motors can be externally connected, and it should be noted that if the hand crank is used, the locking problem after adjustment needs to be considered, for example, a locking pin is arranged on the hand crank to complete the locking of the hand crank.

[0038] Specifically, the base plate 1 is provided with a saw blade feeding groove 11, the bottom of the movable seat 2 is provided with an inverted cam groove 21 matched with the position of the saw blade feeding groove 11, and the inverted cam groove 21 is provided with a saw blade locking assembly 22.

[0039] The saw blade feeding groove 11 and the inverted cam groove 21 can complete the basic position fixing purpose of the saw blade, but in order to avoid the displacement of the saw blade during the tooth grinding process, the saw blade locking assembly 22 is arranged in the inverted cam groove 21 to prevent the saw blade from being damaged due to displacement.

[0040] Specifically, the saw blade locking assembly 22 includes two sets of hinged plates 220, two sets of locking plates 221, and a plurality of locking columns 222. One end of the two sets of hinged plates 220 is hinged in a symmetrical position in the inverted convex groove 21, and the other end is fixedly connected with the two sets of locking plates 221, respectively. The plurality of locking columns 222 are located on both sides of the saw blade feeding groove 11, one end of which is fixedly connected to the base plate 1, and the other end penetrates the groove wall of the inverted convex groove 21 and contacts the hinged plate 220, and the locking column 222 is slidingly connected with the movable seat 2. When the cylinder 6 drives the movable seat 2 to displace away from the base plate 1, the locking column 222 gradually separates from the inverted convex groove 21, at which time the band saw blade can move freely in the horizontal direction. After the band saw blade is moved to complete the tooth feeding, when the cylinder 6 drives the movable seat 2 to displace towards the base plate 1, the locking column 222 gradually inserts into the convex groove 21 and contacts the hinged plate 220, pushes the hinged plate 220 to rotate, and forces the locking plate 221 to contact the band saw blade and complete the clamping of the band saw blade through the two sets of locking plates 221. It should be noted that, in order to avoid the locking plate 221 leaving marks on the band saw blade, the locking plate 221 is provided with a ball at the end contacting the band saw blade, and the band saw blade can only displace in the vertical direction in the clamped state, and cannot displace in other directions.

[0041] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited thereto. Any skilled person in the art can make equivalent replacements or changes to the technical solution and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. A grinding mechanism for a carbide band saw blade, characterized in that, include: The base plate (1), movable seat (2), chassis (3), motor (4), grinding wheel (5) and cylinder (6) are provided. The movable seat (2) has positioning holes (20) at the four corners of its bottom plate. The base plate (1) has positioning posts (10) that match the positioning holes (20). The chassis (3) is fixedly connected to the movable seat (2). The motor (4) is movably connected to the chassis (3) through an arc adjustment component (7) and is movably connected inside the chassis (3). The grinding wheel (5) is located outside the movable seat (2) and is connected to the motor (4) through a connecting shaft (40). The cylinder (6) is fixedly connected to a fixed body, and the piston rod of the cylinder (6) is fixedly connected to the side wall of the top wall of the chassis (3) away from the movable seat (2).

2. The grinding mechanism for a carbide band saw blade according to claim 1, characterized in that: The arc adjustment component (7) includes two sets of U-shaped fixing plates (70), multiple sets of elastic connecting components (71), a cam assembly (72), and a support frame (73). The U-shaped fixing plates (70) are respectively fixedly connected to the side wall of the motor (4) near the movable seat (2) and near the cylinder (6). One end of the multiple sets of elastic connecting components (71) is symmetrically hinged to the side wall of the U-shaped fixing plates (70) away from the motor (4), and the other end is fixedly connected to the inner wall of the housing (3). The cam assembly (72) is movably connected inside the housing (3). The support frame (73) is located between the housing (3) and the grinding wheel (5), and the support frame (73) is fixedly connected to the movable seat (2). The connecting shaft (40) passes through the support frame (73) and is connected to the support frame (73) through a spherical bearing (400).

3. The grinding mechanism for a carbide band saw blade according to claim 2, characterized in that: The elastic connection assembly (71) includes an outer tube (710), an inner tube (711), and a spring (712). The outer tube (710) is fixedly connected to the inner wall of the chassis (3). One end of the inner tube (711) is sleeved inside the outer tube (710), and the other end is hinged to the U-shaped fixing plate (70). The spring (712) is located inside the outer tube (710), and its two ends are fixedly connected to the outer tube (710) and the inner tube (711) respectively.

4. The grinding mechanism for a carbide band saw blade according to claim 2, characterized in that: The cam assembly (72) includes two sets of cams (720), two sets of rotating shafts (721), two sets of turntables (722), and a transmission belt (723). The two sets of cams (720) are located inside the housing (3), and the two sets of cams (720) are in contact with the two sets of U-shaped fixing plates (70) respectively. One end of the two sets of rotating shafts (721) is connected to the inner wall of the housing (3) by a bearing, and the other end passes through the two sets of cams (720) and the side wall of the housing (3) respectively and is connected to the turntable (722) located on the outside of the housing (3). The rotating shaft (721) is keyed to the cams (720) and the turntable (722) and connected to the bearing of the housing (3). The transmission belt (723) is wound around the two sets of turntables (722).

5. The grinding mechanism for a carbide band saw blade according to claim 4, characterized in that: The long axes of the two sets of cams (720) are in a relatively perpendicular position.

6. The grinding mechanism for a carbide band saw blade according to claim 4, characterized in that: One of the turntables (722) is provided with a connection hole (7220) and a hand crank that matches the connection hole (7220).

7. The grinding mechanism for a carbide band saw blade according to claim 1, characterized in that: The base plate (1) is provided with a saw blade feeding groove (11), and the bottom of the movable seat (2) is provided with an inverted convex groove (21) that matches the position of the saw blade feeding groove (11). A saw blade locking component (22) is provided in the inverted convex groove (21).

8. The grinding mechanism for a carbide band saw blade according to claim 7, characterized in that: The saw blade locking assembly (22) consists of two sets of hinge plates (220), two sets of locking plates (221), and multiple locking posts (222). The two sets of hinge plates (220) are hinged symmetrically at one end in the inverted groove (21), and the other end is fixedly connected to the two sets of locking plates (221). The multiple sets of locking posts (222) are located on both sides of the saw blade feeding groove (11). One end of each post is fixedly connected to the base plate (1), and the other end passes through the groove wall of the inverted groove (21) and contacts the hinge plate (220). The locking posts (222) are slidably connected to the movable seat (2).

Images