Heat treatment device for engine gear machining

Abstract

The utility model relates to the technical field of engine gear machining, in particular to a heat treatment device for engine gear machining, which comprises a heat treatment box, a heat treatment device and a heat treatment device. When heat treatment is carried out on the gear, the fixing assembly is arranged, the gear is arranged on a circular pipe in a sleeving mode, a containing ring is used for supporting the gear, a circular rod is pushed to move upwards, two transverse rods are pushed to be far away from each other under the action of a moving plate, a circular plate and a connecting rod, the surface of the fixing plate can be pushed to make contact with and abut against the inner wall of the gear, and fixing of the gear is achieved; a motor is started to drive a reciprocating lead screw to rotate, under the action of a circular ring and a rack, a first gear can drive a circular pipe to rotate in a reciprocating mode, a gear is driven to rotate in a reciprocating mode under the action of a fixing plate, and the surface of the gear can make full contact with hot air when the gear is heated, so that the surface of the gear is heated evenly; and the heat treatment effect on the gear is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of engine gear processing, in particular to a heat treatment device for engine gear processing. Background Art

[0002] Gears are common parts in mechanical transmission systems, used to transmit power and motion. They are composed of multiple teeth (also called tooth profiles) that transmit power and torque through meshing. In the process of gear processing and production, in order to increase the service life of the gear, it is necessary to first perform heat treatment through a heat treatment device.

[0003] The Chinese patent "A heat treatment device for engine gear processing" authorization announcement number "CN215209565U" can enable multiple engine gears to be heat treated simultaneously through the provision of brackets, fixing plates and support rods, thereby improving work efficiency.

[0004] In the above scheme, support rods are used to fix the gears during heat treatment. However, when the gears are placed on the support rods, a gap will be generated between the surfaces of two adjacent gears. When the gap is small, hot air cannot fully enter the gap, resulting in uneven surface heating of the gears during heat treatment, thereby affecting the heat treatment effect of the gears.

[0005] Therefore, a heat treatment device for engine gear machining is proposed to solve the above problems. Utility Model Content

[0006] The purpose of the utility model is to provide a heat treatment device for engine gear processing in order to solve the above-mentioned problem, thereby improving the problem that when the gear is placed on the support rod, a gap will be generated between the surfaces of two adjacent gears. When the gap is small, hot air cannot fully enter the gap, which will cause uneven heating of the surface of the gear during heat treatment, thereby affecting the heat treatment effect of the gear.

[0007] The utility model achieves the above-mentioned purpose through the following technical scheme: a heat treatment device for engine gear processing, comprising: a heat treatment box, wherein a driving mechanism is arranged inside the heat treatment box; wherein the driving mechanism comprises a mounting frame fixedly connected to the inner wall of the heat treatment box, a fixing block is fixedly connected to the inner bottom wall of the mounting frame, a reciprocating screw is rotatably connected to one side of the fixing block, a motor is fixedly connected to one side of the heat treatment box, the other end of the reciprocating screw passes through the mounting frame and the heat treatment box in sequence and is fixedly connected to the output shaft of the motor, a circular ring is arranged on the surface of the reciprocating screw, a rack is slidably connected to the inner wall of the mounting frame, the upper end of the surface of the circular ring is fixedly connected to the bottom end of the rack, the surface of the rack is meshingly connected to first gears distributed in equal rows, and a fixing component is arranged on the inner wall of the first gear.

[0008] Preferably, the fixing assembly includes a round tube fixedly connected to the inner wall of the first gear, the top and bottom ends of the round tube both pass through the mounting frame, the upper end of the inner wall of the mounting frame is slidably connected with two cross bars, the bottom end of the round tube is rotatably connected with a round bar, the top end of the round bar passes through the inside of the round tube and is fixedly connected with a movable plate, the top end of the movable plate is rotatably connected with a circular plate, the lower end of the surface of the cross bar is hinged with a connecting rod, the other ends of the two connecting rods are hinged with the circular plate, one end of the cross bar passes through the round tube and is fixedly connected with a fixed plate. When the gear is heat treated, the setting of the fixing assembly is to put the gear on the round tube, support the gear with a placement ring, and push the round bar upward, and push the two cross bars away from each other under the action of the movable plate, the circular plate and the connecting rod, which is conducive to pushing the surface of the fixed plate to contact and press against the inner wall of the gear, thereby fixing the gear.

[0009] Preferably, an electric push rod is fixedly connected to the inner wall of the mounting frame, the bottom end of the electric push rod passes through the mounting frame and is fixedly connected to the mounting plate, and the bottom end of the round rod is fixedly connected to the top end of the mounting plate. Under the action of the electric push rod and the mounting plate, it is conducive to promoting the synchronous movement of multiple round rods and driving multiple fixing plates to fix the gears at the same time.

[0010] Preferably, a placement ring is fixedly connected to the surface of the circular tube, and the placement ring is configured to be hollow, which is beneficial for providing preliminary support for the gear, and under the action of the placement ring, it is beneficial for creating a certain distance between the gear and the mounting frame, and the hollow shape is beneficial for reducing the contact area between the placement ring and the gear.

[0011] Preferably, an annular groove is provided at the top of the movable plate, the inner wall of the annular groove is slidably connected to a limit block, and the top of the limit block is fixedly connected to the bottom of the circular plate. Under the action of the limit block and the annular groove, the movable plate is prevented from rotating synchronously when the circular plate rotates, thereby ensuring the stability of the round rod during operation.

[0012] Preferably, a ball is rotatably connected to the bottom end of the limit block, and the surface of the ball fits the inner bottom wall of the annular groove, thereby reducing the friction force of the limit block when it moves on the inner wall of the annular groove.

[0013] Preferably, a slide groove is provided on the inner wall of the mounting frame, a moving block is fixedly connected to one side of the rack, and the surface of the moving block is slidably connected to the inner wall of the slide groove. Under the action of the slide groove and the moving block, it is beneficial to limit the movement of the rack, ensuring the stability of the reciprocating screw rotating to drive the ring to drive the rack to reciprocate horizontally.

[0014] Preferably, the surface of the fixing plate is provided with grooves distributed in equal rows, which is beneficial to increase the stability of the fixing plate when fixing the gear.

[0015] The beneficial effects of the utility model are:

[0016] 1. When heat treating the gear, the setting of the fixing assembly is to put the gear on the round tube, support the gear with the placement ring, and push the round rod upward. Under the action of the moving plate, the round plate and the connecting rod, the two cross bars are pushed away from each other, which is conducive to pushing the surface of the fixing plate to contact and press against the inner wall of the gear, so as to fix the gear, and start the motor to drive the reciprocating screw rod to rotate. Under the action of the ring and the rack, it is conducive to the first gear to drive the round tube to reciprocate, and drive the gear to reciprocate under the action of the fixing plate, which is conducive to making the surface of the gear fully contact with the hot air during the heating treatment, so that the surface of the gear is heated evenly, and the heat treatment effect of the gear is improved;

[0017] 2. When fixing the gear, under the action of the connecting rod and the cross bar, it is helpful for the fixing plate to fix the gears of different diameters. When fixing, the gear is pressed against by the fixing plate, which ensures the stability of the gear during heat treatment; BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the driving mechanism structure of the utility model;

[0020] Figure 3 This is a cross-sectional view of the installation frame of the utility model

[0021] Figure 4 This is a schematic diagram of the structure of the fixing assembly of the utility model;

[0022] Figure 5 It is a schematic diagram of the connection structure of the cross bar and the connecting rod of the utility model.

[0023] In the figure: 1, heat treatment box; 2, driving mechanism; 201, mounting frame; 2011, moving block; 2012, slide groove; 202, motor; 203, fixed block; 204, reciprocating screw; 205, circular ring; 206, rack; 207, first gear; 208, fixed assembly; 2081, circular tube; 2082, cross bar; 2083, circular rod; 2084, moving plate; 2085, circular plate; 2086, connecting rod; 2087, fixed plate; 2088, electric push rod; 2089, mounting plate; 20810, round ball; 20811, annular groove; 20812, limit block; 209, placement ring. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] When implementing: Figure 1-5 As shown, a heat treatment device for engine gear processing comprises: a heat treatment box 1, wherein a driving mechanism 2 is arranged inside the heat treatment box 1; wherein the driving mechanism 2 comprises a mounting frame 201 fixedly connected to the inner wall of the heat treatment box 1, a fixing block 203 is fixedly connected to the inner bottom wall of the mounting frame 201, a reciprocating screw 204 is rotatably connected to one side of the fixing block 203, a motor 202 is fixedly connected to one side of the heat treatment box 1, the other end of the reciprocating screw 204 passes through the mounting frame 201 and the heat treatment box 1 in sequence and is fixedly connected to the output shaft of the motor 202, a circular ring 205 is arranged on the surface of the reciprocating screw 204, a rack 206 is slidably connected to the inner wall of the mounting frame 201, the upper end of the surface of the circular ring 205 is fixedly connected to the bottom end of the rack 206, the surface of the rack 206 is meshingly connected to first gears 207 distributed in equal rows, and a fixing component 208 is arranged on the inner wall of the first gear 207.

[0026] The mounting frame 201 is made of high temperature resistant material, and an openable cabinet door is provided at the front end of the heat treatment box 1. When heat treating the gear, the cabinet door of the heat treatment box 1 is opened, and the gear is placed inside the heat treatment box 1. A heating system is provided inside the heat treatment box 1, and the air in the box is heated to the required temperature by electric heating to heat the gear. After the treatment is completed, the next cooling treatment is performed to fix the gear structure and performance.

[0027] like Figure 2 , Figure 3 , Figure 4 and Figure 5As shown, the fixing assembly 208 includes a circular tube 2081 fixedly connected to the inner wall of the first gear 207, the top and bottom ends of the circular tube 2081 both pass through the mounting frame 201, and the upper end of the inner wall of the mounting frame 201 is slidably connected with two cross bars 2082, the bottom end of the circular tube 2081 is rotatably connected with a circular rod 2083, the top end of the circular rod 2083 passes through the interior of the circular tube 2081 and is fixedly connected with a movable plate 2084, the top end of the movable plate 2084 is rotatably connected with a circular plate 2085, the lower end of the surface of the cross bar 2082 is hinged with a connecting rod 2086, the other ends of the two connecting rods 2086 are hinged to the circular plate 2085, and one end of the cross bar 2082 passes through the circular tube 2081 and is fixedly connected with a fixed plate 2087. The inner wall of the mounting frame 201 is fixedly connected with an electric push rod 2088, the bottom end of the electric push rod 2088 passes through the mounting frame 201 and is fixedly connected with a mounting plate 2089, and the bottom end of the round rod 2083 is fixedly connected with the top end of the mounting plate 2089. The surface of the round tube 2081 is fixedly connected with a placement ring 209, and the placement ring 209 is set to a hollow shape. The surface of the fixing plate 2087 is provided with grooves distributed in equal rows.

[0028] When the gears are heated, multiple gears are placed on the corresponding round tubes 2081 at the same time, and the top of the round tube 2081 passes through the gears, so that the bottom of the gears fits with the bottom of the placement ring 209. At this time, the fixing plate 2087 is placed on the inner side of the gears. After the placement is completed, the staff starts the electric push rod 2088 through the controller, and uses the telescopic end of the electric push rod 2088 to drive the mounting plate 2089 to move upward, thereby pushing multiple round rods 2083 to move upward at the same time. At this time, the surface of the round rod 2083 slides along the inner wall of the round tube 2081. When the round rod 208 When moving upward, the movable plate 2084 and the circular plate 2085 are pushed upward at the same time. When the circular plate 2085 moves upward, it pushes the bottom ends of the two connecting rods 2086 to move upward, which will make the other ends of the two connecting rods 2086 move away from each other, and the angle between the two connecting rods 2086 gradually increases. When the other ends of the two connecting rods 2086 move away from each other, the two cross bars 2082 will push the two fixed plates 2087 away from each other, so that the surfaces of the two fixed plates 2087 are attached to the inner wall of the gear and the gear is tightly fixed. After the fixing is completed, the electric push rod 2088 is closed.

[0029] After the gears are fixed, the staff starts the motor 202 through the controller. When the motor 202 is started, it will drive the reciprocating screw 204 to rotate. The reciprocating screw is in the form of two thread grooves with the same pitch and opposite rotation direction, and the two ends are connected by a transition curve. Through the rotation of the reciprocating screw, the side of the spiral groove pushes the slider placed in the spiral groove to make axial reciprocating motion. Therefore, when the reciprocating screw 204 rotates, it will drive the ring 205 to move back and forth laterally, thereby driving the rack 206 to move back and forth laterally. When the rack 206 moves back and forth laterally, it will drive the first gear 207 to reciprocate, thereby driving the gear on the placement ring 209 to reciprocate, so that the surface of the gear is fully in contact with the hot air, and the rotation angle of the first gear 207 is greater than 90 degrees.

[0030] like Figure 4 and Figure 5 As shown, the top of the movable plate 2084 is provided with an annular groove 20811, the inner wall of the annular groove 20811 is slidably connected to a limit block 20812, and the top of the limit block 20812 is fixedly connected to the bottom of the circular plate 2085. The bottom of the limit block 20812 is rotatably connected to a ball 20810, and the surface of the ball 20810 is in contact with the inner bottom wall of the annular groove 20811.

[0031] When the round tube 2081 rotates, it will drive the cross bar 2082 and the fixed plate 2087 to rotate synchronously. When the cross bar 2082 rotates, the connecting rod 2086 will drive the circular plate 2085 to rotate synchronously, thereby driving the limit block 20812 to slide in the annular groove 20811, thereby avoiding driving the movable plate 2084 and the round rod 2083 to rotate. When the limit block 20812 slides in the annular groove 20811, the surface of the ball 20810 will rotate in accordance with the inner bottom wall of the annular groove 20811.

[0032] like Figure 2 and Figure 3 As shown, the inner wall of the mounting frame 201 is provided with a slide groove 2012, one side of the rack 206 is fixedly connected with a moving block 2011, and the surface of the moving block 2011 is slidably connected to the inner wall of the slide groove 2012. When the rack 206 moves, it drives the moving block 2011 to slide in the slide groove 2012.

[0033] When the utility model is used, when the gears are heated, a plurality of gears are placed on the corresponding round tubes 2081 at the same time, and the top of the round tubes 2081 passes through the gears, so that the bottom ends of the gears are fitted with the bottom ends of the placement rings 209. After the placement is completed, the staff starts the electric push rod 2088 through the controller, and uses the telescopic end of the electric push rod 2088 to drive the mounting plate 2089 to move upward, thereby pushing the plurality of round rods 2083 to move upward at the same time. When the round rods 2083 move upward, the moving plate 2084 and the round plate 2085 are pushed upward at the same time, thereby pushing the bottom ends of the two connecting rods 2086 to move upward, and the angle between the two connecting rods 2086 gradually increases. Become larger, so that the other ends of the two connecting rods 2086 are away from each other, and the two cross bars 2082 are pushed away from each other, thereby pushing the two fixing plates 2087 to move, and making the surfaces of the two fixing plates 2087 fit against the inner wall of the gear and fix the gear tightly. After the fixation is completed, turn off the electric push rod 2088, and the staff starts the motor 202 through the controller to drive the reciprocating screw 204 to rotate, and drives the rack 206 to move back and forth horizontally under the action of the ring 205, drives the first gear 207 to reciprocate, and drives the gear on the placement ring 209 to reciprocate under the action of the fixing plate 2087, so that the surface of the gear is fully in contact with the hot air.

[0034] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A heat treatment device for engine gear processing, characterized in that: include: A heat treatment box (1), wherein a driving mechanism (2) is arranged inside the heat treatment box (1); The driving mechanism (2) comprises a mounting frame (201) fixedly connected to the inner wall of the heat treatment box (1); a fixing block (203) is fixedly connected to the inner bottom wall of the mounting frame (201); a reciprocating screw rod (204) is rotatably connected to one side of the fixing block (203); a motor (202) is fixedly connected to one side of the heat treatment box (1); the other end of the reciprocating screw rod (204) passes through the mounting frame (201) and the heat treatment box (1) in sequence and is fixedly connected to the output shaft of the motor (202); a circular ring (205) is provided on the surface of the reciprocating screw rod (204); a rack (206) is slidably connected to the inner wall of the mounting frame (201); the upper end of the circular ring (205) is fixedly connected to the bottom end of the rack (206); the surface of the rack (206) is meshedly connected to first gears (207) distributed in equal rows; and a fixing component (208) is provided on the inner wall of the first gear (207).

2. The heat treatment device for engine gear machining according to claim 1, characterized in that: The fixing assembly (208) comprises a circular tube (2081) fixedly connected to the inner wall of the first gear (207); the top and bottom ends of the circular tube (2081) both pass through the installation frame (201); the upper end of the inner wall of the installation frame (201) is slidably connected to two cross bars (2082); the bottom end of the circular tube (2081) is rotatably connected to a round rod (2083); the top end of the round rod (2083) passes through the circular tube (201); 081) is fixedly connected with a movable plate (2084), the top end of the movable plate (2084) is rotatably connected with a circular plate (2085), the lower end of the surface of the cross bar (2082) is hinged with a connecting rod (2086), the other ends of the two connecting rods (2086) are hinged with the circular plate (2085), and one end of the cross bar (2082) passes through the circular tube (2081) and is fixedly connected with a fixed plate (2087).

3. The heat treatment device for engine gear machining according to claim 2, characterized in that: An electric push rod (2088) is fixedly connected to the inner wall of the installation frame (201); the bottom end of the electric push rod (2088) passes through the installation frame (201) and is fixedly connected to a mounting plate (2089); and the bottom end of the round rod (2083) is fixedly connected to the top end of the mounting plate (2089).

4. The heat treatment device for engine gear machining according to claim 2, characterized in that: A placement ring (209) is fixedly connected to the surface of the circular tube (2081), and the placement ring (209) is configured to be hollow.

5. The heat treatment device for engine gear machining according to claim 2, characterized in that: The top of the movable plate (2084) is provided with an annular groove (20811), the inner wall of the annular groove (20811) is slidably connected to a limit block (20812), and the top of the limit block (20812) is fixedly connected to the bottom end of the circular plate (2085).

6. The heat treatment device for engine gear machining according to claim 5, characterized in that: The bottom end of the limit block (20812) is rotatably connected to a ball (20810), and the surface of the ball (20810) is in contact with the inner bottom wall of the annular groove (20811).

7. The heat treatment device for engine gear machining according to claim 1, characterized in that: The inner wall of the installation frame (201) is provided with a sliding groove (2012), one side of the rack (206) is fixedly connected with a moving block (2011), and the surface of the moving block (2011) is slidably connected to the inner wall of the sliding groove (2012).

8. The heat treatment device for engine gear machining according to claim 2, characterized in that: The surface of the fixing plate (2087) is provided with grooves distributed in equal rows.

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