Clamp for automatic machining and grinding of balance shaft support

Abstract

The invention relates to the technical field of automobile part machining, in particular to a balance shaft support automatic machining and polishing clamp which comprises a workbench, a cylinder, a positioning plate, a mounting frame and an electric push rod and further comprises a positioning table used for bearing an European balance shaft support, a main positioning assembly, a positioning roller, a connecting rod and a driving assembly. Through the arrangement of the connecting rod, the hinge rod and the rotating rod, in the process that the hinge rod moves downwards or upwards, the Eucmann balance shaft support placed on one positioning table can be positioned and fixed, and in the positioning and fixing process, through extrusion of the inner wall of a spiral groove formed in the surface of the rotating rod and a driving rod, the Eucmann balance shaft support can be positioned and fixed; the position of the two positioning tables is changed, so that the European balance shaft support can rotate towards the grinding station in the positioning and fixing process, accurate positioning and fixing are achieved at the moment when the European balance shaft support rotates to the grinding station, the downtime when the European balance shaft support is assembled and disassembled is effectively shortened, and the working efficiency during mass production of a factory is improved.

Description

Technical Field

[0001] The invention relates to the technical field of automobile parts processing, in particular to a fixture for automatic processing and polishing of a balance shaft bracket. Background Art

[0002] The balance shaft bracket is a component for fixing and installing the balance shaft and longitudinal thrust rod of heavy vehicles. It mainly bears the longitudinal force from the thrust rod and the vertical force of the balance shaft. Its structural strength directly affects the driving safety of the vehicle. During the production and processing of the balance shaft bracket, the internal burrs of the bearing holes opened inside it need to be polished. If the burrs in the bearing holes are not removed, the mounting surface of the bearing is uneven, which will cause unstable friction during the operation of the bearing, thereby causing vibration. This vibration not only affects the working performance of the balance shaft, but also affects the handling and comfort of the entire vehicle.

[0003] Before grinding the balance shaft bracket, the staff needs to use a clamp to clamp it. After grinding, the staff needs to release the clamp and replace the new balance shaft bracket. The conventional loading and unloading process takes a long time, affecting the work efficiency of the factory. In response to the above problems, there are good solutions in the prior art, such as the patent number: CN111604764B, which uses air pressure to automatically clamp the temperature and control the grinding of automotive supplies. By pushing the clamping slider that is movably connected inside the clamping track to compress the clamping spring to move to the middle position, the clamping slider that is movably connected inside the clamping track clamps the workpiece above the clamping track, realizing automatic clamping of the workpiece, thereby improving work efficiency. However, there are still the following defects: for the Auman balance shaft bracket, due to its large weight, the loading and unloading process will be more frequent, and the downtime of the entire grinding device will be longer during the loading and unloading process. Under the demand for large-scale production operations in the factory, it will still affect the work efficiency.

[0004] Therefore, in order to solve the above-mentioned problem, a fixture for automatic machining and polishing of a balance shaft bracket is proposed. Summary of the invention

[0005] The purpose of the present invention is to provide a fixture for automatic processing and grinding of a balancing shaft bracket, which solves the problem that the loading and unloading of the Auman balancing shaft bracket will cause a long downtime and seriously reduce the work efficiency. By setting the connecting rod, hinged rod and rotating rod, the Auman balancing shaft bracket placed on one of the positioning tables can be positioned and fixed during the downward or upward movement of the hinged rod, and the positions of the two positioning tables can be exchanged by squeezing the inner wall of the spiral groove opened on the surface of the driving rod and the rotating rod during the positioning and fixing process, so that the Auman balancing shaft bracket can be rotated toward the grinding station during the positioning and fixing process, and accurate positioning and fixing can be achieved at the moment of rotating to the grinding station, which effectively shortens the downtime when loading and unloading the Auman balancing shaft bracket and improves the work efficiency of the factory during mass production.

[0006] To achieve the above object, the present invention provides the following technical solutions: A fixture for automatic processing and polishing of a balancing shaft bracket comprises a workbench, a cylinder, a positioning plate, a mounting frame and an electric push rod, wherein the cylinder is arranged on the workbench, the positioning plate is rotatably arranged on the upper end of the cylinder, the mounting frame is arranged on the workbench, and the electric push rod is arranged on the mounting frame, and also comprises a positioning table, a main positioning assembly, a positioning roller, a connecting rod and a driving assembly for carrying the Auman balancing shaft bracket, the positioning table is arranged on the positioning plate, the main positioning assembly is arranged above the positioning table, the positioning roller and the connecting rod are both connected to the main positioning assembly, when the connecting rod moves in the horizontal direction, the main positioning assembly drives the positioning roller to engage or separate with the Auman balancing shaft bracket, the driving assembly is arranged at the output end of the electric push rod, when the output end of the electric push rod moves up and down, the driving assembly drives the positioning table to rotate forward or reverse 180° through the cylinder, and when the positioning table rotates, the driving assembly drives the positioning table to move along the central axis direction of the connecting rod through the connecting rod.

[0007] By adopting the above scheme, the distance between the two main positioning components and the electric push rod can be adjusted during the operation of the electric push rod. In the process of clamping one of the Auman balancing shaft brackets, the other Auman balancing shaft bracket that has been polished can be automatically disassembled. In the process of adjustment, the positioning plate can be driven to rotate forward or reverse half a circle, and the unpolished Auman balancing shaft bracket can be adjusted to the polishing station, thereby realizing semi-automatic loading and unloading of the Auman balancing shaft bracket, effectively shortening the downtime during loading and unloading, and effectively ensuring the work efficiency under large-scale production operations in the factory.

[0008] Preferably, the main positioning assembly includes a mounting plate, two sleeves, two movable rods, two U-shaped plates, two springs, an auxiliary positioning assembly and a pressure roller, the mounting plate is arranged at one end of the connecting rod, the two sleeves are symmetrically fixed and penetrated into the interior of the mounting plate, the two movable rods are respectively movably penetrated into the interior of the corresponding sleeves, the two U-shaped plates are respectively arranged at the ends of the corresponding movable rods, the positioning roller is rotatably arranged inside the corresponding U-shaped plate, the two springs are respectively arranged between the corresponding mounting plate and the U-shaped plate, and are respectively sleeved with the corresponding sleeves, the elastic force of the two springs is greater than the friction force between the Auman balance shaft bracket and the corresponding positioning platform, the auxiliary positioning assembly is arranged on the U-shaped plate, the pressure roller is connected to the auxiliary positioning assembly, when the mounting plate moves to the left, the auxiliary positioning assembly drives the pressure roller on the left to move upward, and when the mounting plate moves to the right, the auxiliary positioning assembly drives the pressure roller on the right to move downward.

[0009] By adopting the above scheme, under the connecting action of the connecting rod, the positioning rollers on the left and right sides can be driven to move in the same direction, so that in the process of positioning and clamping the Auman balancing shaft bracket that has not been polished, the clamping state of the Auman balancing shaft bracket that has been polished can be released, so that the Auman balancing shaft bracket that has been polished can be replaced easily, and the replacement process will not affect the polishing process of the Auman balancing shaft bracket that is being polished. There is no need to stop the machine when replacing the Auman balancing shaft bracket, which effectively ensures work efficiency.

[0010] Preferably, the auxiliary positioning assembly includes two screws, two sliders, two gears and two racks. The two screws are symmetrically rotatably arranged on the U-shaped plate and are threadedly sleeved with the corresponding sliders. The two pressure rollers are respectively rotatably arranged on the side walls of the corresponding sliders. The two gears are respectively arranged under the corresponding sliders and fixedly sleeved with the corresponding screws. The two racks are respectively arranged on the corresponding mounting plates and are respectively meshed with the corresponding gears. The two pressure rollers are symmetrically arranged about the mounting plate.

[0011] By adopting the above scheme, after the Auman balancing shaft bracket is positioned in the left and right directions, the corresponding pressure rollers can be driven to move in the up and down directions as the output end of the electric push rod continues to move. For the Auman balancing shaft bracket that has not been polished, the two pressure rollers can press down the Auman balancing shaft bracket from above and from both sides, thereby realizing automatic positioning of the Auman balancing shaft bracket in the front and rear directions, further simplifying the positioning process and effectively ensuring work efficiency.

[0012] Preferably, a limiting rod is arranged between the two sliders, and the limiting rod includes a main rod and two auxiliary rods. The two ends of the main rod are respectively connected to the corresponding sliders, and the two auxiliary rods are symmetrical and arranged in an "eight" shape. When the auxiliary rod contacts the Auman balancing shaft bracket, it is located at the uppermost end of the arc surface of the outer wall of the Auman balancing shaft bracket.

[0013] By adopting the above scheme, the two sliders can be limited, so that the two screws can synchronously drive the two sliders to move up and down during the rotation process, and then the auxiliary rod can further assist in positioning when driving the two pressure rollers to press down the Auman balance shaft bracket, effectively ensuring the stability of the Auman balance shaft bracket during the grinding process, thereby ensuring work efficiency.

[0014] Preferably, the driving assembly includes a U-shaped rod, a rotating rod, a driving rod and a hinged rod, the U-shaped rod is arranged at the output end of the electric push rod, the rotating rod is arranged on the positioning plate and is located inside the U-shaped rod, the rod wall of the rotating rod is provided with a spiral groove, the number of spiral turns of the spiral groove is half a turn, the driving rod is arranged on the U-shaped rod and is slidably connected to the inner wall of the spiral groove, the hinged rod is arranged on the outside of the U-shaped rod, and the two ends of the hinged rod are respectively hinged to the connecting rod with the U-shaped rod.

[0015] By adopting the above scheme, in the process of driving the U-shaped rod up and down by the output end of the electric push rod, the sliding connection between the driving rod and the spiral groove can be utilized to drive the rotating rod to drive the positioning plate to rotate forward or reverse half a circle, thereby realizing the position adjustment of the positioning rollers and the stop rollers on the left and right sides. After the grinding of the Auman balancing shaft bracket on the left is completed, when the Auman balancing shaft bracket that has not been ground and placed on the right positioning table is limited and fixed, the positions of the two Auman balancing shaft brackets can be automatically changed during the fixing process, thereby shortening the downtime of the staff when loading and unloading the Auman balancing shaft bracket, and thus improving the work efficiency during mass production in the factory.

[0016] Preferably, the positioning platform includes a support plate, a support roller and a stop roller, the support plate is arranged on the positioning plate, the support roller is arranged on the side of the support plate, the stop roller is arranged on the top of the support plate, a support block is arranged on the top of the support plate, an opening is opened inside the support block, and the connecting rod is passed through the inside of the opening.

[0017] By adopting the above scheme, the opening is utilized to support the connecting rod and reduce the traction on the output end of the electric push rod. During the left and right movement of the connecting rod, the blocking roller can be utilized to limit the Auman balancing shaft bracket, and the support roller and the support plate can be rotatably connected to reduce the resistance encountered by the Auman balancing shaft bracket during loading and unloading, thereby effectively reducing the work intensity of the staff and effectively ensuring work efficiency.

[0018] Preferably, the connecting rod includes a left section, a middle section and a right section, the middle section is arranged in a "U" shape, the rotating rod is arranged inside the middle section, two support blocks are provided, the length of the middle section is greater than the distance between the two support blocks, and the outer width of the middle section is greater than the width of the opening.

[0019] By adopting the above scheme, the connecting rod is divided into three sections, and under the setting conditions of length and width, no matter how the connecting rod moves, the middle section always exists inside at least one opening, thereby limiting the connecting rod, so that the connecting rod can only move horizontally in the connection direction of the two support blocks, thereby achieving the effect of adjusting the distance between the positioning rollers on both sides and the electric push rod, thereby realizing automatic positioning or disassembly of the Auman balance shaft bracket, effectively improving work efficiency.

[0020] Preferably, a first positioning hole is formed at the top of the support block, a second positioning hole is formed inside the left section and the right section, a positioning pin is passed through the first positioning hole, and the second positioning hole matches the positioning pin.

[0021] By adopting the above scheme, by utilizing the connection between the locating pin and the corresponding locating hole one and the corresponding locating hole two, the position of the connecting rod can be fixed, thereby stabilizing the position of the connecting rod during the grinding process, reducing the vibration of the electric push rod, and effectively ensuring the stable clamping of the Auman balance shaft bracket, thereby ensuring the grinding effect.

[0022] Compared with the prior art, the present invention has the following beneficial effects: 1. By setting up the articulated rod and utilizing the articulation effect between the articulated rod, the U-shaped rod and the connecting rod, the position of the connecting rod in the left and right directions can be adjusted during the process of the electric push rod driving the U-shaped rod to move up and down. Therefore, during the process of positioning the unpolished Auman balancing shaft bracket, the limit of the polished Auman balancing shaft bracket can be released, and then the polished Auman balancing shaft bracket can be replaced while the Auman balancing shaft bracket on the left side after positioning is polished, which effectively shortens the downtime during the replacement process, thereby effectively ensuring work efficiency.

[0023] 2. Through the set gears and racks, in the process of positioning the Auman balancing shaft bracket in the left and right directions, the relative movement between the mounting plate and the U-shaped plate can make the rack drive the gear to drive the screw to rotate, thereby realizing the vertical position adjustment of the pressure roller. In the process of positioning the Auman balancing shaft bracket in the left and right directions, synchronous positioning in the vertical direction can be realized, effectively ensuring the positioning accuracy, and the positioning process does not require manual participation of the staff, reducing the work intensity of the staff while improving work efficiency.

[0024] 3. Through the setting of the rotating rod and the spiral groove on the surface of the rotating rod, during the process of the U-shaped rod moving up and down (that is, during the positioning or releasing of the Auman balance shaft bracket in the left and right directions), the driving rod set on the U-shaped rod and the extrusion of the spiral groove can drive the rotating rod to drive the positioning plate to rotate forward or reverse, thereby realizing the position exchange of the two positioning tables, further shortening the downtime, and further improving the work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 It is a state diagram after the positions of the two positioning platforms of the present invention are swapped; Figure 3 It is a schematic diagram of the connection structure of the connecting rod and two main positioning components and corresponding auxiliary positioning components of the present invention; Figure 4 For the present invention Figure 3 An enlarged view of the local A in the middle; Figure 5 It is a schematic diagram of the connection structure between the driving assembly of the present invention and two positioning platforms and a positioning plate; Figure 6 For the present invention Figure 5 An enlarged view of the local B portion; Figure 7 It is a schematic diagram of the connection structure between the positioning platform and the workbench of the present invention; Figure 8 For the present invention Figure 7 Enlarged view of the local C part.

[0026] In the figure: 1, workbench; 2, cylinder; 3, positioning plate; 4, mounting frame; 5, electric push rod; 6, positioning table; 61, support plate; 62, support roller; 63, stop roller; 64, support block; 641, opening; 642, positioning hole 1; 643, positioning hole 2; 644, positioning pin; 7, main positioning assembly; 71, mounting plate; 72, sleeve; 73, movable rod; 74, U-shaped plate; 75, spring; 76, auxiliary positioning assembly Parts; 761, screw; 762, slider; 763, gear; 764, rack; 765, limit rod; 7651, main rod; 7652, auxiliary rod; 77, pressure roller; 8, positioning roller; 9, connecting rod; 91, left section; 92, middle section; 93, right section; 10, drive assembly; 101, U-shaped rod; 102, rotating rod; 1021, spiral groove; 103, drive rod; 104, hinged rod; 11, Auman balance shaft bracket. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] See also Figures 1 to 8 The present invention provides a fixture for automatic processing and polishing of a balance shaft bracket, and the technical solution is as follows: For details, please refer to Figure 1 , Figure 2 , Figure 3 and Figure 4 A fixture for automatic processing and grinding of a balancing shaft bracket, comprising a workbench 1, a cylinder 2, a positioning plate 3, a mounting frame 4 and an electric push rod 5, wherein the cylinder 2 is arranged on the workbench 1, the positioning plate 3 is rotatably arranged on the upper end of the cylinder 2, the mounting frame 4 is arranged on the workbench 1, and the electric push rod 5 is arranged on the mounting frame 4, and further comprising a positioning table 6 for carrying an Auman balancing shaft bracket 11, a main positioning assembly 7, a positioning roller 8, a connecting rod 9 and a driving assembly 10, the positioning table 6 is arranged on the positioning plate 3, the main positioning assembly 7 is arranged above the positioning table 6, and the positioning roller 8 and the connecting rod 9 are both connected to the main positioning assembly 7; The main positioning assembly 7 includes a mounting plate 71, two sleeves 72, two movable rods 73, two U-shaped plates 74, two springs 75, an auxiliary positioning assembly 76 and a pressure roller 77. The mounting plate 71 is arranged at one end of the connecting rod 9, the two sleeves 72 are symmetrically fixedly penetrated inside the mounting plate 71, the two movable rods 73 are respectively movably penetrated inside the corresponding sleeves 72, the two U-shaped plates 74 are respectively arranged at the ends of the corresponding movable rods 73, the positioning roller 8 is rotatably arranged inside the corresponding U-shaped plate 74, and the two springs 75 are arranged at the ends of the corresponding movable rods 73. 5 are respectively arranged between the corresponding mounting plate 71 and the U-shaped plate 74, and are respectively sleeved with the corresponding sleeves 72. The elastic forces of the two springs 75 are greater than the friction between the Auman balancing shaft bracket 11 and the corresponding positioning platform 6. The auxiliary positioning assembly 76 is arranged on the U-shaped plate 74, and the pressure roller 77 is connected to the auxiliary positioning assembly 76. When the mounting plate 71 moves to the left, the auxiliary positioning assembly 76 drives the pressure roller 77 on the left to move upward. When the mounting plate 71 moves to the right, the auxiliary positioning assembly 76 drives the pressure roller 77 on the right to move downward.

[0029] Under the above setting conditions, when the mounting plate 71 is away from the electric push rod 5, the mounting plate 71 can use the elastic force of the spring 75 to squeeze the U-shaped plate 74, and the U-shaped plate 74 drives the positioning roller 8 to move during the movement. When the movement of the positioning roller 8 is blocked after squeezing the Auman balancing shaft bracket 11, as the mounting plate 71 continues to move, the spring 75 begins to shrink, and the end of the sleeve 72 inserted inside the mounting plate 71 will gradually approach the U-shaped plate 74 and finally squeeze the U-shaped plate 74 until the movement of the positioning roller 8 inside the U-shaped plate 74 is completely blocked, so that the position of the Auman balancing shaft bracket 11 that has not started grinding can be fixed in the left and right directions. As can be seen from the accompanying drawings, there are two mounting plates 71. When one of the mounting plates 71 is away from the electric push rod 5, the other mounting plate 71 will approach the electric push rod 5, so that the Auman balancing shaft bracket 11 that has completed the grinding operation can be automatically disassembled without manual intervention by the staff, which effectively reduces the work intensity of the staff and improves work efficiency.

[0030] As an embodiment of the present invention, refer to Figure 3 and Figure 4 The auxiliary positioning assembly 76 includes two screw rods 761, two sliders 762, two gears 763 and two racks 764. The two screw rods 761 are symmetrically rotatably arranged on the U-shaped plate 74 and are threadedly sleeved with the corresponding sliders 762. The two pressure rollers 77 are rotatably arranged on the side walls of the corresponding sliders 762. The two gears 763 are respectively arranged under the corresponding sliders 762 and are fixedly sleeved with the corresponding screw rods 761. The two racks 764 are respectively arranged on the corresponding mounting plates 71 and are respectively meshed and connected with the corresponding gears 763. The two pressure rollers 77 are symmetrically arranged about the mounting plate 71.

[0031] Under the above setting conditions, when the spring 75 contracts, as the mounting plate 71 continues to move toward the corresponding U-shaped plate 74, the rack 764 arranged on the mounting plate 71 will move relative to the U-shaped plate 74. Since the rack 764 and the gear 763 are in a meshing state, and the gear 763 is fixedly sleeved with the screw 761, the screw 761 can be driven to rotate through the gear 763 during the movement of the rack 764, and the slider 762 threadedly sleeved with the screw 761 can be driven to move downward. Since the side wall of the slider 762 is rotatably provided with a pressure roller 77, the pressure roller 77 can be driven to move downward during the downward movement of the slider 762. Since the pressure roller 77 is provided with two and The mounting plate 71 is symmetrically arranged, so the two pressure rollers 77 can press down from the top of the Auman balancing shaft bracket 11 until the two pressure rollers 77 are symmetrical with respect to the Auman balancing shaft bracket 11, at which time the automatic positioning of the Auman balancing shaft bracket 11 in the vertical direction is completed; and when the spring 75 is reset from the contracted state, the mounting plate 71 will move away from the U-shaped plate 74, thereby driving the corresponding pressure rollers 77 to move upward, and while releasing the limit on the left and right directions of the Auman balancing shaft bracket 11, the limit in the vertical direction can be automatically released. The entire positioning process only requires the electric push rod 5 to work, which effectively simplifies the fixing and disassembly process, thereby effectively ensuring work efficiency.

[0032] As an embodiment of the present invention, refer to Figure 1 , Figure 2 and Figure 3 A limiting rod 765 is arranged between the two sliders 762. The limiting rod 765 includes a main rod 7651 and two auxiliary rods 7652. The two ends of the main rod 7651 are respectively connected to the corresponding sliders 762. The two auxiliary rods 7652 are symmetrical and arranged in an "eight" shape. When the auxiliary rod 7652 contacts the Auman balancing shaft bracket 11, it is located at the uppermost end of the arc surface of the outer wall of the Auman balancing shaft bracket 11.

[0033] Under the above-mentioned setting conditions, the two sliders 762 can be limited so that the two sliders 762 can only move up and down synchronously in the vertical direction, and in the process of moving downward, the auxiliary rod 7652 can be used to assist in positioning the Auman balance shaft bracket 11 in the vertical direction, and the position where the auxiliary rod 7652 contacts the Auman balance shaft bracket 11 is the position of the maximum thickness in the vertical direction, thereby avoiding deformation of the Auman balance shaft bracket 11 during the clamping process, effectively ensuring the stability of the Auman balance shaft bracket 11 during the grinding process, and thus ensuring work efficiency.

[0034] As an embodiment of the present invention, refer to Figure 5 and Figure 6The driving assembly 10 is arranged at the output end of the electric push rod 5. The driving assembly 10 includes a U-shaped rod 101, a rotating rod 102, a driving rod 103 and a hinged rod 104. The U-shaped rod 101 is arranged at the output end of the electric push rod 5. The rotating rod 102 is arranged on the positioning plate 3 and is located inside the U-shaped rod 101. The rod wall of the rotating rod 102 is provided with a spiral groove 1021, and the number of spiral turns of the spiral groove 1021 is half a turn. The driving rod 103 is arranged on the U-shaped rod 101 and is slidably connected to the inner wall of the spiral groove 1021. The hinged rod 104 is arranged on the outside of the U-shaped rod 101, and the two ends of the hinged rod 104 are respectively hinged to the connecting rod 9 with the U-shaped rod 101.

[0035] Under the above-mentioned setting conditions, in the process of the output end of the electric push rod 5 moving downward, the U-shaped rod 101 arranged at the output end of the electric push rod 5 can move downward accordingly. Since the driving rod 103 is arranged at the lower end of the U-shaped rod 101, and the rotating rod 102 is fixedly connected to the positioning plate 3 and has a spiral groove 1021 with a spiral number of half a circle on the surface, in the process of the driving rod 103 moving from the top to the bottom, the rotating rod 102 can be driven to drive the positioning plate 3 to rotate half a circle forward, that is, to adjust the position of the positioning table 6 on the left and right sides, so as to automatically change the position of the Auman balance shaft bracket 11 that has completed grinding and has not started grinding. On the contrary, when the output end of the electric push rod 5 drives the U-shaped rod 101 to move upward, the position adjustment of the two Auman balancing shaft brackets 11 can also be achieved, and the driving effect of the driving rod 103 can be utilized during the adjustment process to achieve the positioning of the Auman balancing shaft bracket 11 that has not yet started grinding, while completing the disassembly of the Auman balancing shaft bracket 11 that has been completed grinding, thereby effectively shortening the downtime when replacing the Auman balancing shaft bracket 11 and effectively ensuring work efficiency.

[0036] As an embodiment of the present invention, refer to Figure 5 and Figure 7 The positioning platform 6 includes a support plate 61, a support roller 62 and a stop roller 63. The support plate 61 is arranged on the positioning plate 3, the support roller 62 is arranged on the side of the support plate 61, the stop roller 63 is arranged on the top of the support plate 61, and a support block 64 is arranged on the top of the support plate 61. An opening 641 is opened inside the support block 64, and the connecting rod 9 is passed through the inside of the opening 641.

[0037] Under the above-mentioned setting conditions, due to the heavy weight of the Auman balancing shaft bracket 11, the transportation process is relatively laborious. By utilizing the rotating connection between the support roller 62 and the support plate 61, after the Auman balancing shaft bracket 11 is placed, the sliding friction encountered by the Auman balancing shaft bracket 11 when moving on the positioning table 6 can be changed to rolling friction, thereby facilitating the adjustment of the Auman balancing shaft bracket 11 to the approximate position on the positioning table 6, effectively reducing the work intensity of the staff, thereby ensuring work efficiency.

[0038] As an embodiment of the present invention, refer to Figure 8 The connecting rod 9 includes a left section 91, a middle section 92 and a right section 93. The middle section 92 is arranged in a "U" shape. The rotating rod 102 is arranged inside the middle section 92. Two support blocks 64 are provided. The length of the middle section 92 is greater than the distance between the two support blocks 64. The outer width of the middle section 92 is greater than the width of the opening 641.

[0039] Under the above-mentioned setting conditions, the connecting rod 9 can be limited so that the connecting rod 9 can only move along its own central axis direction inside the two openings 641, avoiding positioning deviation due to friction during the positioning of the Auman balancing shaft bracket 11. At the same time, the normal installation of the rotating rod 102 and the U-shaped rod 101 can be guaranteed, avoiding obstruction of the U-shaped rod 101 during the downward movement, and ensuring that the positioning plate 3 can rotate normally, so that the positions of the two Auman balancing shaft brackets 11 can be automatically adjusted after each grinding operation is completed, thereby ensuring work efficiency.

[0040] As an embodiment of the present invention, refer to Figure 8 A positioning hole 1 642 is formed on the top of the support block 64 , a positioning hole 2 643 is formed inside the left section 91 and the right section 93 , a positioning pin 644 is passed through the inside of the positioning hole 1 642 , and the positioning hole 2 643 matches the positioning pin 644 .

[0041] Under the above-mentioned setting conditions, due to the vibration during the grinding process, the positioning pin 644 is connected with the positioning hole 1 642 and the positioning hole 2 643 to fix the horizontal position of the connecting rod 9, thereby avoiding the situation in which the positioning effect is reduced due to vibration during the grinding process, and further ensuring work efficiency.

[0042] Working principle: In order to shorten the downtime when replacing Auman balance shaft bracket 11, refer to Figure 1 , Figure 2 and Figure 5 , by using the two positioning tables 6, the Auman balancing shaft bracket 11 on one of the positioning tables 6 can be replaced with the Auman balancing shaft bracket 11 that has been polished on the other positioning table 6 during the polishing process; in order to release the fixing effect of the other Auman balancing shaft bracket 11 during the positioning and fixing process of one of the Auman balancing shaft brackets 11, refer to Figure 1 , Figure 2 , Figure 3 and Figure 5, by using the provided connecting rod 9, when the connecting rod 9 moves in the left and right directions, the main positioning components 7 connected at both ends can be driven to move in the same direction, so that the fixing effect of the other Auman balancing shaft bracket 11 can be released while the unpolished Auman balancing shaft bracket 11 is limited and fixed, so as to facilitate the replacement of the Auman balancing shaft bracket 11 that has been polished; in order to be able to move the Auman balancing shaft bracket 11 placed on the right to the left polishing position after the left polishing operation is completed, refer to Figure 5 and Figure 6 By utilizing the driving rod 103 arranged on the U-shaped rod 101 and the spiral groove 1021 opened on the rotating rod 102, the rotating rod 102 can be driven to rotate when the driving rod 103 drives the main positioning component 7 to work through the hinge rod 104 and the connecting rod 9, thereby realizing the position exchange of the two positioning platforms 6, effectively shortening the positioning process of the Auman balance shaft bracket 11, and ensuring the work efficiency during mass production in the factory.

[0043] Specific: Figure 1 Taking the state of the Auman balancing shaft bracket 11 on the left side of the middle as an example, after the replaced Auman balancing shaft bracket 11 is placed on multiple placement rollers on the right side, the electric push rod 5 is started, and the output end of the electric push rod 5 drives the U-shaped rod 101 to move downward. During the downward movement of the U-shaped rod 101, the spiral groove 1021 is squeezed by the driving rod 103. Since the rotating rod 102 is fixedly connected to the positioning plate 3, and the positioning plate 3 is rotatably connected to the cylinder 2, the positioning plate 3 can be driven to rotate during the rotation of the rotating rod 102. Since the number of spiral turns of the spiral groove 1021 is half a turn, after the driving rod 103 moves to the bottom, the positions of the two positioning platforms 6 are swapped; During the downward movement of the U-shaped rod 101, the articulation of the articulated rod 104 can drive the connecting rod 9 to move rightward, thereby driving the two mounting plates 71 to move rightward synchronously. This process includes two states: State 1: The right mounting plate 71 squeezes the U-shaped plate 74 to move rightward under the elastic force of the spring 75. When the right positioning roller 8 follows the U-shaped plate 74 to move and squeezes the replaced Auman balancing shaft bracket 11 and is blocked, as the mounting plate 71 continues to move rightward, the spring 75 begins to contract, and the end of the sleeve 72 finally contacts the U-shaped plate 74. At this time, the replaced Auman balancing shaft bracket 11 is limited in the left and right directions. In the process of the spring 75 starting to contract, the gear mounted on the mounting plate 71 The bar 764 moves with the mounting plate 71, and drives the gear 763 to rotate by meshing with the gear 763. Since the slider 762 is threadedly sleeved with the screw 761 and the two sliders 762 are connected by the main rod 7651, the pressure roller 77 can be driven to move downward during the rotation of the screw 761. Since the pressure roller 77 is rotatably connected with the slider 762, the double positioning and fixing of the Auman balance shaft bracket 11 can be achieved in the vertical direction through the two pressure rollers 77 and the two auxiliary rods 7652. State 2: When the mounting plate 71 on the left moves to the right, the corresponding spring 75 can be gradually reset, so that the meshing connection between the rack 764 and the gear 763 can be used to drive the screw rod 761 to rotate in the opposite direction, so that the two pressure rollers 77 and the two auxiliary rods 7652 on the left move upward synchronously. When the two pressure rollers 77 and the two auxiliary rods 7652 on the left move to the top, the mounting plate 71 on the left pulls the U-shaped plate 74 to move through the spring 75, so that the positioning roller 8 on the left can be separated from the Auman balancing shaft bracket 11 after grinding. The above-mentioned state one and state two occur simultaneously when the rotating rod 102 drives the positioning plate 3 to rotate, that is, while realizing the position exchange of the two positioning platforms 6, the positioning of the polished Auman balancing shaft bracket 11 is also released, and the positioning and fixation of the unpolished Auman balancing shaft bracket 11 is realized, which effectively simplifies the loading and unloading and positioning process of the Auman balancing shaft bracket 11 and ensures the work efficiency of the factory during mass production operations.

[0044] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A fixture for automatic machining and polishing of a balancing shaft bracket, comprising a workbench (1), a cylinder (2), a positioning plate (3), a mounting frame (4) and an electric push rod (5), characterized in that: The invention also comprises a positioning platform (6), a main positioning assembly (7), a positioning roller (8), a connecting rod (9) and a driving assembly (10) for carrying the Auman balancing shaft bracket (11). The positioning platform (6) is arranged on the positioning plate (3), the main positioning assembly (7) is arranged above the positioning platform (6), the positioning roller (8) and the connecting rod (9) are both connected to the main positioning assembly (7), when the connecting rod (9) moves in the horizontal direction, the main positioning assembly (7) drives the positioning roller (8) to engage or separate with the Auman balancing shaft bracket (11), the driving assembly (10) is arranged at the output end of the electric push rod (5), when the output end of the electric push rod (5) moves up or down, the driving assembly (10) drives the positioning platform (6) to rotate forward or reverse 180 degrees through the cylinder (2), and when the positioning platform (6) rotates, the driving assembly (10) drives the positioning platform (6) to move along the central axis direction of the connecting rod (9) through the connecting rod (9).

2. The fixture for automatic machining and polishing of a balance shaft bracket according to claim 1, characterized in that: The main positioning assembly (7) comprises a mounting plate (71), two sleeves (72), two movable rods (73), two U-shaped plates (74), two springs (75), an auxiliary positioning assembly (76) and a pressure roller (77), wherein the mounting plate (71) is arranged at one end of the connecting rod (9), the two sleeves (72) are symmetrically fixedly arranged inside the mounting plate (71), the two movable rods (73) are respectively movably arranged inside the corresponding sleeves (72), the two U-shaped plates (74) are respectively arranged at the ends of the corresponding movable rods (73), the positioning roller (8) is rotatably arranged inside the corresponding U-shaped plate (74), and the two The springs (75) are respectively arranged between the corresponding mounting plate (71) and the U-shaped plate (74), and are respectively sleeved with the corresponding sleeves (72). The elastic force of the two springs (75) is greater than the friction force between the Auman balance shaft bracket (11) and the corresponding positioning platform (6). The auxiliary positioning component (76) is arranged on the U-shaped plate (74), and the pressure roller (77) is connected to the auxiliary positioning component (76). When the mounting plate (71) moves to the left, the auxiliary positioning component (76) drives the pressure roller (77) on the left to move upward. When the mounting plate (71) moves to the right, the auxiliary positioning component (76) drives the pressure roller (77) on the right to move downward.

3. The fixture for automatic machining and polishing of a balance shaft bracket according to claim 2, characterized in that: The auxiliary positioning assembly (76) comprises two screw rods (761), two sliders (762), two gears (763) and two racks (764); the two screw rods (761) are symmetrically rotatably arranged on the U-shaped plate (74) and are threadedly sleeved with the corresponding sliders (762); the two pressure rollers (77) are rotatably arranged on the side walls of the corresponding sliders (762); the two gears (763) are respectively arranged under the corresponding sliders (762) and are fixedly sleeved with the corresponding screw rods (761); the two racks (764) are respectively arranged on the corresponding mounting plates (71) and are respectively meshedly connected with the corresponding gears (763); and the two pressure rollers (77) are symmetrically arranged with respect to the mounting plate (71).

4. The fixture for automatic machining and polishing of a balance shaft bracket according to claim 3, characterized in that: A limit rod (765) is arranged between the two sliders (762), the limit rod (765) comprising a main rod (7651) and two auxiliary rods (7652), the two ends of the main rod (7651) are respectively connected to the corresponding sliders (762), the two auxiliary rods (7652) are symmetrically arranged in an "eight" shape, and the auxiliary rods (7652) are located at the uppermost end of the arc surface of the outer wall of the Auman balancing shaft bracket (11) when in contact with the Auman balancing shaft bracket (11).

5. The fixture for automatic machining and polishing of a balance shaft bracket according to claim 2, characterized in that: The driving assembly (10) comprises a U-shaped rod (101), a rotating rod (102), a driving rod (103) and a hinged rod (104); the U-shaped rod (101) is arranged at the output end of the electric push rod (5); the rotating rod (102) is arranged on the positioning plate (3) and is located inside the U-shaped rod (101); a spiral groove (1021) is provided on the rod wall of the rotating rod (102); the spiral groove (1021) has a spiral number of half a turn; the driving rod (103) is arranged on the U-shaped rod (101) and is slidably connected to the inner wall of the spiral groove (1021); the hinged rod (104) is arranged outside the U-shaped rod (101); and both ends of the hinged rod (104) are respectively hinged to the connecting rod (9) through the U-shaped rod (101).

6. The fixture for automatic machining and polishing of a balance shaft bracket according to claim 5, characterized in that: The positioning platform (6) comprises a support plate (61), a support roller (62) and a stop roller (63); the support plate (61) is arranged on the positioning plate (3); the support roller (62) is arranged on the side of the support plate (61); the stop roller (63) is arranged on the top of the support plate (61); a support block (64) is arranged on the top of the support plate (61); an opening (641) is provided inside the support block (64); and the connecting rod (9) is passed through the inside of the opening (641).

7. The fixture for automatic machining and polishing of a balance shaft bracket according to claim 6, characterized in that: The connecting rod (9) comprises a left section (91), a middle section (92) and a right section (93); the middle section (92) is arranged in a "U" shape; the rotating rod (102) is arranged inside the middle section (92); two supporting blocks (64) are provided; the length of the middle section (92) is greater than the distance between the two supporting blocks (64); and the outer width of the middle section (92) is greater than the width of the opening (641).

8. The fixture for automatic machining and polishing of a balance shaft bracket according to claim 7, characterized in that: A first positioning hole (642) is provided at the top of the support block (64), and second positioning holes (643) are provided inside the left section (91) and the right section (93). A positioning pin (644) is passed through the interior of the first positioning hole (642), and the second positioning hole (643) matches the positioning pin (644).

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