A polishing aid jig for balancing a shaft support

Abstract

The present application belongs to the technical field of polishing clamps, and relates to a polishing auxiliary clamp for a balance shaft support. The polishing auxiliary clamp comprises a base, a first electric push rod fixed to the base, a connecting rod fixed to the extension end of the first electric push rod, a fixed disc fixed to the connecting rod, a plurality of top rods evenly distributed in the circumferential direction of the fixed disc, and a rotating frame rotatably connected to the fixed disc. A sliding block is slidably connected to the rotating frame, a sliding shell is slidably connected to the sliding block, and a resistance spring is fixed between the sliding block and the sliding shell. The resistance spring between the sliding block and the sliding shell applies resistance to the up-and-down sliding of the sliding shell, limits the initial horizontal height of the hand grinder, makes the hand grinder quickly and stably adhere to the balance shaft support at the moment of starting, reduces the time from the starting state to the dynamic balance state and the beginning of polishing, and thus reduces the influence of hand grinder vibration on the operator's arm.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of polishing clamps, in particular to a polishing auxiliary clamp for a balance shaft support. BACKGROUND

[0002] The balance shaft support is a key component of the vehicle power transmission system. During the use of the balance shaft support, the balance shaft support is affected by sulfur compounds in the engine oil, and a large number of corrosion layers are generated on the surface, which leads to a decrease in surface hardness, and even causes fatigue fracture under long-term alternating load. The probability of damage to the balance shaft support due to no polishing is as high as 3.2%, the probability of damage to the balance shaft is as high as 18.7%, and the probability of failure of the sealing element is as high as 42.5%. The input-output ratio (ROI) of polishing maintenance can reach 1:8.5, which is a key measure to avoid systemic risks. Therefore, the balance shaft support needs to be polished regularly, and the polished balance shaft support needs to be maintained. The structure of the existing balance shaft support is irregular and diverse. Generally, a hand grinder is used to polish the balance shaft support, which requires the balance shaft support to be fixed in advance by an auxiliary clamp.

[0003] During the research and development process, we found that:

[0004] 1. The existing clamp directly clamps the balance shaft support to prevent the clamp and the balance shaft support from shaking. When the hand grinder starts, it accelerates from a stationary state to a high speed (usually more than 10,000 revolutions). The rotational centrifugal force of the motor rotor on the hand grinder increases sharply, so the hand grinder produces a large amplitude of vibration at the moment of starting. The existing clamp and the balance shaft support cannot buffer the vibration generated by the hand grinder, which reduces the stability of the hand grinder and causes the operator's arm to be uncomfortable when using the hand grinder, and even causes the hand grinder to be thrown off.

[0005] 2. During polishing, the hand grinder is prone to backflushing. Backflushing refers to the phenomenon that when the grinding wheel or cutting piece of the hand grinder is blocked, the rotational kinetic energy of the grinding wheel is suddenly converted into a reverse impact force, causing the handle of the hand grinder to rotate around the rotational axis of the grinding wheel, resulting in a sudden loss of control of the hand grinder and causing the hand grinder to pop up, thereby affecting the safety of the operator.

[0006] Therefore, our R&D personnel have developed a polishing auxiliary clamp for a balance shaft support to stabilize the polishing of the balance shaft support. SUMMARY

[0007] In order to overcome the shortcomings pointed out in the above background art, the present application provides a polishing auxiliary clamp for a balance shaft support.

[0008] The technical scheme of the present application is as follows: a polishing auxiliary clamp for a balance shaft support, comprising:

[0009] The base is fixedly connected with a first electric push rod, the telescopic end of the first electric push rod is fixedly connected with a connecting rod, the connecting rod is fixedly connected with a fixed disc, the fixed disc is provided with top rods uniformly distributed in the circumferential direction, and the fixed disc is rotationally connected with a rotating frame;

[0010] The sliding block is slidingly connected to the rotating frame, the sliding block is slidingly connected with a sliding shell, a resistance spring is fixedly connected between the sliding block and the sliding shell, the sliding shell is provided with a sliding rod, the sliding rod is installed with a universal joint, and the universal joint is detachably connected with a hoop.

[0011] Further description, the base is fixedly connected with a second electric push rod, the telescopic rod of the second electric push rod is fixedly connected with a support ring, the sliding rod is fixedly connected with a circular truncated cone trigger block, the sliding shell is slidingly connected with a trigger rod, the trigger block is attached to the trigger rod, the trigger block is used for extruding the trigger rod to move, the sliding shell is installed with a pressure sensor, the trigger rod and the pressure sensor are fixedly connected with an elastic member, the trigger rod extrudes the pressure sensor through the elastic member, the sliding shell is fixedly connected with symmetrically distributed liquid capsules, the sliding rod slides horizontally and rotates on the sliding shell, and the symmetrically distributed liquid capsules are located on both sides of the sliding rod respectively, so that when the sliding rod slides, the liquid capsules are extruded by the sliding rod, and the liquid capsules are provided with damping liquid, so as to exert resistance on the sliding of the sliding rod.

[0012] Further description, the number of top rods is double and at least four, and two top rods at opposite angles are fixedly connected with a connecting rod, the top rods are slidingly connected with the fixed disc, and one of the top rods on the same connecting rod is threadedly connected with a knob.

[0013] Further description, the connecting rod is fixedly connected with a positioning block, the axis of the positioning block, the axis of the fixed disc and the axis of the support ring are collinear.

[0014] Further description, the positioning block is a circular truncated cone, and the diameter of the positioning block gradually increases from top to bottom.

[0015] Further description, on the same horizontal plane, the distance from the axis of the fixed disc to the farthest point on the rotating frame is A, the distance from the axis of the fixed disc to the farthest point on the connecting rod is B, and the thickness of the connecting rod is C, B-C>A.

[0016] Further description, the positioning block is fixedly connected with a motor, the output shaft of the motor is fixedly connected with a polishing member, and the polishing member is located above the positioning block.

[0017] Further description, the side of the top rod close to the support ring is fixedly connected with a flexible block.

[0018] Further illustrate, the contact surface between the liquid bag and the sliding rod is rough.

[0019] Further illustrate, the resistance exists between the rotating frame and the fixed disc, and the resistance received by the sliding rod is less than the resistance required for rotating the rotating frame.

[0020] The beneficial effects of the present application are as follows: 1. The present application applies resistance to the up and down sliding of the sliding shell through the resistance spring between the sliding block and the sliding shell, limits the horizontal height of the hand grinder at the initial time, makes the hand grinder quickly and stably close to the balance shaft support at the opening moment, reduces the time from the opening state to the dynamic balance state and the start of grinding, thereby reducing the influence of hand grinder vibration on the operator's arm;

[0021] 2. The horizontal sliding of the sliding rod drives the trigger block to extrude the trigger rod, adjusts the pressure received by the pressure sensor when the hand grinder produces a recoil phenomenon, drives the supporting ring to move downward through the extension rod of the second electric push rod, and the balance shaft support moves downward under the influence of its own gravity, so that the balance shaft support quickly moves away from the hand grinder, when the balance shaft support quickly moves away from the hand grinder, the hand grinder no longer continues to produce a recoil phenomenon and restores dynamic balance, the extension rod of the second electric push rod drives the supporting ring to reset, so that the balance shaft support slowly resets, and the corrosion layer and the structure protrusion on the balance shaft support gradually and actively contact the grinding wheel of the hand grinder, which gradually grinds the corrosion layer and the structure protrusion on the balance shaft support, so as to reduce the risk of recoil when the side surface of the hand grinder grinding wheel contacts the corrosion layer and the structure protrusion, and improve the safety of the hand grinder during grinding. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is a schematic diagram of the three-dimensional structure of the present application;

[0023] Figure 2 It is a schematic diagram of the three-dimensional structure of the fixed disc of the present application;

[0024] Figure 3 It is a schematic diagram of the three-dimensional structure of the present application;

[0025] Figure 4 It is a schematic diagram of the three-dimensional structure of the motor and grinding part of the present application;

[0026] Figure 5 It is a schematic diagram of the three-dimensional structure of the liquid bag of the present application;

[0027] Figure 6 It is a schematic diagram of the three-dimensional structure of the trigger block and trigger rod of the present application.

[0028] The figure is marked: 1-base, 2-the first electric push rod, 3-connecting rod, 4-fixed disc, 401-top rod, 5-rotary frame, 6-sliding block, 7-sliding shell, 8-sliding rod, 9-gimbal, 10-hoop, 11-the second electric push rod, 12-support ring, 13-trigger block, 14-trigger rod, 15-pressure sensor, 16-liquid capsule, 17-link, 18-knob, 19-positioning block, 20-motor, 21-polishing piece, 22-flexible block. DETAILED DESCRIPTION

[0029] The application is further described in detail below with reference to the accompanying drawings and specific embodiments, but the protection scope and application scope of the application are not limited. Example 1

[0030] The embodiment discloses a polishing auxiliary clamp for a balance shaft support, which is used for assisting in fixing the balance shaft support when an operator uses a hand grinder to polish the balance shaft support.

[0031] As Figures 1-5As shown, it comprises a base 1, the base 1 is provided with a control terminal not shown in the figure, the base 1 is fixedly connected with the first electric push rod 2 electrically connected with the control terminal, the telescopic end of the first electric push rod 2 is fixedly connected with the connecting rod 3, the first electric push rod 2 is used to drive the connecting rod 3 to move up and down, the connecting rod 3 is fixedly connected with the fixed disc 4, the connecting rod 3 is used to drive the fixed disc 4 to move upward, the fixed disc 4 is provided with the top rod 401 which is uniformly distributed in the circumferential direction, in this example, the balance shaft support is directly pressed between the top rod 401 and the base 1, before clamping the balance shaft support, the connecting rod 3 drives the fixed disc 4 to move upward, the fixed disc 4 drives all the top rods 401 to move upward, the distance between the top rod 401 and the base 1 is adjusted to the distance that can accommodate the balance shaft support, then the balance shaft support is placed between the top rod 401 and the base 1, when the balance shaft support is clamped, the connecting rod 3 drives all the top rods 401 to move downward through the fixed disc 4, the top rod 401 presses the balance shaft support on the base 1, the fixed disc 4 is rotatably connected with the rotating frame 5; the sliding block 6 is slidably connected to the rotating frame 5, the sliding block 6 is slidably connected with the sliding shell 7, the resistance spring is fixedly connected between the sliding block 6 and the sliding shell 7, the resistance spring between the sliding block 6 and the sliding shell 7 is used to increase the resistance when the sliding shell 7 slides up and down, the sliding shell 7 is provided with the sliding rod 8, the universal joint 9 is installed on the sliding rod 8, the clamp 10 is detachably connected to the universal joint 9, before polishing the balance shaft support, the hand grinder is installed on the clamp 10, and the sand disc of the hand grinder is in contact with the upper surface of the balance shaft support, the surface of the balance shaft support is polished, during the process of polishing the balance shaft support, the rotating frame 5 is manually rotated, the rotating frame 5 drives the sliding block 6, the sliding shell 7, the sliding rod 8, the universal joint 9, the clamp 10 and the hand grinder to rotate around the axis of the fixed disc 4, the sliding block 6 slides horizontally along the rotating frame 5, the sliding block 6, the sliding shell 7, the sliding rod 8, the universal joint 9, the clamp 10 and the hand grinder slide horizontally along the rotating frame 5, the sliding shell 7 slides up and down along the sliding block 6, the sliding shell 7, the sliding rod 8, the universal joint 9, the clamp 10 and the hand grinder slide up and down along the sliding block 6, the inclination angle of the clamp 10 is adjusted through the universal joint 9, so that the inclination angle of the hand grinder is changed, through the above steps, the position and inclination angle of the hand grinder are adjusted.

[0032] On the same horizontal plane, the distance from the axis of the fixed disc 4 to the farthest point on the rotating frame 5 is A, the distance from the axis of the fixed disc 4 to the farthest point on the connecting rod 3 is B, the thickness of the connecting rod 3 projected behind is C, B-C>A, during the rotation of the rotating frame 5, it does not contact the connecting rod 3.

[0033] The use process of the polishing auxiliary clamp in this embodiment is as follows:

[0034] Before use:

[0035] The first electric push rod 2 is controlled by the control terminal to drive the connecting rod 3 to move upward, the connecting rod 3 drives the fixed disc 4 to move upward, the fixed disc 4 drives all the top rods 401 to move upward, the distance between the top rods 401 and the base 1 is adjusted to the extent that the balance shaft support can be placed, and then the balance shaft support is placed between the top rods 401 and the base 1, and then the hand grinder is installed on the clamp 10.

[0036] Start using:

[0037] First, the control terminal is used to start the first electric push rod 2 to move downward, the first electric push rod 2 drives the connecting rod 3 to move downward, the connecting rod 3 drives the fixed disc 4 to move downward, the fixed disc 4 drives all the top rods 401 to move downward, the top rods 401 move downward and press the balance shaft support, the balance shaft support is clamped between the top rods 401 and the base 1, and then the control terminal is used to turn off the first electric push rod 2.

[0038] Then the operator determines that the switch of the hand grinder is in the off state, the operator inserts the power cord of the hand grinder, turns on the switch of the hand grinder, and uses the hand grinder to grind the balance shaft support, through the movement of the rotating frame 5, the sliding block 6, the sliding shell 7, the sliding rod 8, the universal joint 9 and the clamp 10, the hand grinder can rotate around the axis of the fixed disc 4, slide horizontally along the rotating frame 5, slide up and down along the sliding block 6, and adjust the inclination angle of the clamp 10, so as to change the inclination angle of the hand grinder, and the position and inclination angle of the hand grinder are adjusted through the above steps.

[0039] When the balance shaft support needs to be ground, the hand grinder accelerates from static to high speed (usually more than 10,000 revolutions) in an instant when it starts, which will cause the rotation centrifugal force of the motor rotor on the hand grinder to increase sharply, so the hand grinder will vibrate greatly in an instant when it is turned on, and the vibration amplitude of the hand grinder will be greatly reduced until it reaches a dynamic balance state. The resistance spring between the sliding block 6 and the sliding shell 7 applies resistance to the up and down movement of the sliding shell 7, so that the up and down movement of the sliding rod 8, the universal joint 9, the clamp 10 and the hand grinder is blocked, the initial horizontal height of the hand grinder is limited, the hand grinder is quickly and stably attached to the balance shaft support in an instant when it is turned on, the time from the start state to the dynamic balance state is reduced, and the grinding is started, so as to reduce the influence of the hand grinder vibration on the operator's arm.

[0040] When the grinding is finished, the operator turns off the hand grinder switch, unplugs the hand grinder power cord, and controls the first electric push rod 2 to move upward through the control terminal. The first electric push rod 2 drives the fixed disc 4 to move upward through the connecting rod 3. The fixed disc 4 drives all the jacks 401 to move upward, and the jacks 401 no longer press the balance shaft support. The operator removes the balance shaft support, and finally repeats the above steps to grind the other side of the balance shaft support.

[0041] If the side of the balance shaft support needs to be ground, the hand grinder is removed from the clamp 10 after the switch is turned off. Then the hand grinder is turned over by 90° and reinstalled on the clamp 10, so that the grinding wheel of the hand grinder is tightly attached to the side of the balance shaft support. The above steps are repeated to grind the side of the balance shaft support. Example 2

[0042] This embodiment discloses a grinding auxiliary clamp for a balance shaft support. On the basis of example 1, the grinding auxiliary clamp further has an emergency treatment structure when the hand grinder handle shakes due to the grinding wheel being blocked.

[0043] As Figures 1-3 , Figure 5 and Figure 6As shown, the base 1 is fixedly connected with a second electric push rod 11 electrically connected with the control terminal, the telescopic rod of the second electric push rod 11 is fixedly connected with a support ring 12, the telescopic end of the second electric push rod 11 is used to drive the support ring 12 to move up and down, the middle part of the support ring 12 is provided with a hole, in the above embodiment, the balance shaft support is placed on the base 1, in this embodiment and the following embodiments, the balance shaft support is placed on the support ring 12, the upper side surface area of the support ring 12 is smaller than the upper side surface area of the base 1, so as to reduce the placement area of the balance shaft support, so that the balance shaft support with irregular lower surface shape can be placed stably, the sliding rod 8 is fixedly connected with a circular truncated cone-shaped trigger block 13, the diameter of the trigger block 13 gradually increases from top to bottom, the sliding rod 8 is used to drive the trigger block 13 to move horizontally, the sliding shell 7 is slidably connected with a trigger rod 14, the lower side of the trigger rod 14 is provided with an inclined surface, the trigger block 13 is attached to the inclined surface of the trigger rod 14, the trigger block 13 is used to extrude the trigger rod 14 to move, in the grinding process, if the hand grinder produces a recoil phenomenon, the recoil phenomenon refers to that when the grinding wheel or cutting piece of the hand grinder is blocked, the rotational kinetic energy of the grinding wheel will suddenly be converted into a reverse impact force, so that the handle of the hand grinder is instantly rotated around the rotation axis of the grinding wheel, causing the hand grinder to be suddenly out of control and pop up, at this time, the handle of the hand grinder is swung and drives the sliding rod 8 to move horizontally through the clamp 10 and the universal joint 9, generally, the rotating direction of the hand grinder is fixed, so the direction of the handle swing when the hand grinder shakes is also single, the sliding rod 8 will only drive the trigger block 13 to move towards the trigger rod 14, so that the trigger block 13 extrudes the trigger rod 14 to move upward, the sliding shell 7 is installed with a pressure sensor 15 electrically connected with the control terminal, the trigger rod 14 and the pressure sensor 15 are fixedly connected with an elastic element, wherein the elastic element is a compression spring, the trigger rod 14 extrudes the pressure sensor 15 through the elastic element, once the pressure sensor 15 is pressed, the control terminal will control the telescopic rod of the second electric push rod 11 to retract, the sliding shell 7 is fixedly connected with front and back symmetrically distributed liquid capsules 16, the sliding rod 8 horizontally slides and rotates on the sliding shell 7, the symmetrically distributed liquid capsules 16 are respectively located on the front and back of the sliding rod 8, so that when the sliding rod 8 slides, the liquid capsules 16 are extruded by the sliding rod 8, the liquid capsules 16 are provided with damping liquid, so as to exert resistance to the sliding of the sliding rod 8.

[0044] The contact surfaces between the liquid capsules 16 and the sliding rod 8 are rough surfaces, so as to increase the resistance when the sliding rod 8 rotates and horizontally slides.

[0045] There is resistance between the rotating frame 5 and the fixed disc 4, the resistance that the sliding rod 8 slides is smaller than the resistance that the rotating frame 5 rotates, when the sliding rod 8 is instantaneously impacted, the sliding rod 8 will quickly horizontally slide and extrude the liquid capsules 16, and will not make the rotating frame 5 rotate along the fixed disc 4.

[0046] The emergency treatment process when the handle of the hand grinder shakes in this embodiment is as follows:

[0047] In the process of polishing the balance shaft support on the hand grinder, if there are different degrees of corrosion layer and structural protrusions on the upper surface of the balance shaft support, the resistance received by the grinding wheel of the hand grinder changes during movement, causing the hand grinder to produce a recoil phenomenon, and the handle of the hand grinder will swing and move the sliding rod 8 horizontally through the clamp 10 and the universal joint 9, the front liquid bag 16 is compressed, the sliding rod 8 drives the trigger block 13 to move, the trigger block 13 extrudes the trigger rod 14 to move upward, the trigger rod 14 extrudes the pressure sensor 15 through the elastic element, so that the extrusion force received by the pressure sensor 15 increases, the pressure sensor 15 transmits an electrical signal to the control terminal, the control terminal controls the extension rod of the second electric push rod 11 to move downward, the extension rod of the second electric push rod 11 drives the support ring 12 to move downward, in the process of the extension rod of the second electric push rod 11 driving the support ring 12 to move downward, the extension end of the first electric push rod 2 drives the fixed disc 4 to move downward through the connecting rod 3, the fixed disc 4 drives all the jacks 401 to move downward, the jacks 401 keep the balance shaft support compressed to prevent the balance shaft support from shaking, the balance shaft support is pushed by the jacks 401 and moves downward under the influence of its own gravity, so that the balance shaft support quickly moves away from the hand grinder, the grinding wheel of the hand grinder is no longer blocked and returns to the initial dynamic balance state, so that the handle of the hand grinder is no longer affected by the torque.

[0048] When the balance shaft support quickly moves away from the hand grinder, the hand grinder returns to the dynamic balance state, the operator controls the movement of the hand grinder, and the liquid bag 16 no longer deforms, so that the hand grinder drives the sliding rod 8, the universal joint 9 and the clamp 10 to move, the sliding rod 8 drives the trigger block 13 to move, the trigger block 13 no longer compresses the trigger rod 14, the elastic element of the trigger rod 14 rebounds, the trigger rod 14 moves downward, the pressure sensor 15 is no longer pressed, the control terminal controls the extension rod of the second electric push rod 11 to slowly extend, the extension rod of the second electric push rod 11 drives the support ring 12 to slowly move upward, the support ring 12 drives the balance shaft support to move upward, when the extension rod of the second electric push rod 11 extends to the reset state, the control terminal closes the second electric push rod 11, the corrosion layer and the structural protrusion on the balance shaft support gradually and actively contact the grinding wheel of the hand grinder, and the corrosion layer and the structural protrusion on the balance shaft support are gradually ground to reduce the risk of recoil when the side of the hand grinder grinding wheel contacts the corrosion layer and the structural protrusion, and improve the safety of the hand grinder during polishing.

[0049] In the process of polishing the side of the balance shaft support, if the hand grinder grinding wheel recoils, the handle of the hand grinder will vertically swing, at this time the resistance spring between the sliding block 6 and the sliding housing 7 buffers the swing of the hand grinder to reduce the swing amplitude when the hand grinder recoils, thereby improving the safety of the hand grinder during polishing. Example 3

[0050] The embodiment discloses a polishing auxiliary clamp for a balance shaft support.

[0051] As shown in Figure 3 With Figure 4 As shown in the figure, the number of the jacks 401 is double and at least four, and the two jacks 401 at opposite angles are fixedly connected with a connecting rod 17. Taking the four jacks 401 as an example, the jack 401 is in sliding connection with the fixed disc 4, one of the jacks 401 on the same connecting rod 17 is threadedly connected with a knob 18, the jack 401 of the knob 18 is provided with a threaded groove, and the knob 18 is provided with a threaded convex, so that the jack 401 can slide on the fixed disc 4. The adjacent jacks 401 are moved up and down by rotating the knob 18, the jack 401 drives the jack 401 at the opposite angle to move up and down through the connecting rod 17, and the two jacks 401 are moved up, and the other two jacks 401 at opposite angles clamp the balance shaft support. In this way, the position of the balance shaft support clamped on the upper surface is exposed to the outside, so as to polish the position of the balance shaft support clamped.

[0052] The lower side of the jack 401 is fixedly connected with a flexible block 22, and the flexible block 22 is deformed to fit the upper surface of the balance shaft support. When there is a corrosion layer and a structural protrusion on the upper surface, the deformation amounts of all the flexible blocks 22 are different, so that the upper surface of the balance shaft support and the lower surface of the fixed disc 4 remain parallel. Embodiment 4

[0053] The embodiment discloses a polishing auxiliary clamp for a balance shaft support, which further has the functions of automatic positioning and polishing of the shaft hole of the balance shaft support on the basis of embodiment 3.

[0054] As shown in Figure 3 With Figure 4 As shown in the figure, the connecting rod 3 is fixedly connected with a positioning block 19, and the connecting rod 3 is used for driving the positioning block 19 to move up and down. The axis of the positioning block 19, the axis of the fixed disc 4 and the axis of the supporting ring 12 are collinear. The positioning block 19 is fixedly connected with a motor 20 which is electrically connected with a control terminal. The output shaft of the motor 20 is fixedly connected with a polishing piece 21, the polishing piece 21 is a brush disc, the diameter of the polishing piece 21 is greater than the diameter of the shaft hole of the balance shaft support, and the polishing piece 21 is located above the positioning block 19.

[0055] The positioning block 19 is a circular truncated cone, and the diameter of the positioning block 19 gradually increases from top to bottom.

[0056] The minimum diameter of the positioning block 19 is smaller than the diameter of the shaft hole of the balance shaft support, and the maximum diameter of the positioning block 19 is greater than the diameter of the shaft hole of the balance shaft support.

[0057] The positioning and polishing steps of the shaft hole of the balance shaft support in the embodiment are as follows:

[0058] When the shaft hole of the balance shaft support needs to be polished, the operator adjusts the height of the jacks 401 by rotating the knob 18, the jacks 401 of the knob 18 drive the jacks 401 at the opposite corners to move through the connecting rods 17, so that the jacks 401 drive the flexible blocks 22 to move upward to the limit position, after the distance between the support ring 12 and the flexible blocks 22 is enough to put the balance shaft support, the operator puts the balance shaft support between the support ring 12 and the flexible blocks 22, and makes the shaft hole of the balance shaft support sleeve on the positioning block 19, and the polishing piece 21 is above the balance shaft support, the operator starts the first electric push rod 2 through the control terminal, the telescopic end of the first electric push rod 2 drives the positioning block 19 to move upward through the connecting rod 3, the positioning block 19 gradually adheres to and extrudes the inner wall of the balance shaft support, so that the axis of the balance shaft support is collinear with the axis of the positioning block 19, and the shaft hole of the balance shaft support is positioned.

[0059] When the balance shaft support is positioned, the operator controls the telescopic end of the first electric push rod 2 to move downward through the control terminal, the telescopic end of the first electric push rod 2 drives the connecting rod 3 to move downward, the connecting rod 3 drives the fixed disc 4 and the positioning block 19 to move downward, the fixed disc 4 drives all the jacks 401 to move downward, and the positioning block 19 drives the motor 20 and the polishing piece 21 to move downward, the operator starts the motor 20 through the control terminal, the output shaft of the motor 20 drives the polishing piece 21 to rotate, and the polishing piece 21 moves from top to bottom to polish the inner wall of the shaft hole of the balance shaft support.

[0060] When the inner wall of the shaft hole of the balance shaft support is polished, the operator controls the first electric push rod 2 to reset through the control terminal, and closes the first electric push rod 2 and the motor 20.

[0061] In summary, the above is only a preferred embodiment of the present application, and is not used to limit the protection scope of the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A polishing aid jig for balancing a shaft support, characterized by, The utility model relates to a kind of automatic polishing device, including: Base (1), first electric push rod (2) is fixedly connected in the base (1), the telescopic end of the first electric push rod (2) is fixedly connected with connecting rod (3), connecting rod (3) is fixedly connected with fixed disc (4), the fixed disc (4) is provided with the top rod (401) that is evenly distributed in circumference, rotating frame (5) is rotatably connected with the fixed disc (4); Sliding block (6) is slidably connected to the rotating frame (5), sliding block (6) is slidably connected with sliding shell (7), resistance spring is fixedly connected between the sliding block (6) and the sliding shell (7), the sliding shell (7) is provided with sliding rod (8), universal joint (9) is installed in the sliding rod (8), the universal joint (9) is detachably connected with hoop (10); The base (1) is fixedly connected with second electric push rod (11), the telescopic rod of the second electric push rod (11) is fixedly connected with support ring (12), the sliding rod (8) is fixedly connected with circular-truncated-cone trigger block (13), trigger rod (14) is slidably connected in the sliding shell (7), the trigger block (13) is attached to the trigger rod (14), the trigger block (13) is used to extrude the trigger rod (14) and move, pressure sensor (15) is installed in the sliding shell (7), the trigger rod (14) and the pressure sensor (15) are fixedly connected with elastic member, the trigger rod (14) extrudes the pressure sensor (15) by elastic member, the sliding shell (7) is fixedly connected with symmetrically distributed liquid bag (16), the sliding rod (8) is horizontally slid and rotated on the sliding shell (7), and the liquid bag (16) is respectively located at two sides of the sliding rod (8), so that the liquid bag (16) is extruded by the sliding rod (8) when the sliding rod (8) slides, the liquid bag (16) is provided with damping liquid, so as to exert resistance on the sliding of the sliding rod (8); The number of the top rod (401) is double and at least four, and two of the top rods (401) at opposite angles are fixedly connected with connecting rod (17), the top rod (401) is slidably connected with the fixed disc (4), and one of the top rods (401) on the same connecting rod (17) is threadedly connected with knob (18); The connecting rod (3) is fixedly connected with positioning block (19), the axis of the positioning block (19), the axis of the fixed disc (4) and the axis of the support ring (12) are collinear; The positioning block (19) is circular-truncated-cone, and the diameter of the positioning block (19) gradually increases from top to bottom; The motor (20) is fixedly connected in the positioning block (19), the output shaft of the motor (20) is fixedly connected with polishing member (21), and the polishing member (21) is located above the positioning block (19).

2. A polishing aid jig for balancing axle supports as defined in claim 1, wherein On the same horizontal plane, the distance from the axis of the fixed disc (4) to the farthest point on the rotating frame (5) is A, the distance from the axis of the fixed disc (4) to the farthest point on the connecting rod (3) is B, the thickness of the connecting rod (3) is C, and B-C>A.

3. A polishing aid jig for balancing axle supports as defined in claim 1, wherein The top rod (401) is fixed with a flexible block (22) on one side close to the support ring (12).

4. A polishing aid jig for balancing axle supports as defined in claim 1, wherein The contact surfaces between the liquid bag (16) and the sliding rod (8) are rough surfaces.

5. A polishing aid jig for balancing axle supports as defined in claim 4, wherein The rotating frame (5) and the fixed disc (4) have resistance, and the resistance received by the sliding rod (8) is smaller than the resistance required by the rotating of the rotating frame (5).

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