Lathe internal and external grinding machining equipment

Abstract

The invention relates to the technical field of suite machining, in particular to lathe internal and external grinding machining equipment which comprises a rack, a moving seat, an abrasive belt grinding machine, a lathe center frame, an L-shaped rod, a grinding roller and a power assembly and further comprises a mounting plate, a mounting mechanism, a driving mechanism and three supporting plates. The abrasive belt grinding machine is arranged on the moving seat, the lathe center frame is arranged above the rack and fixedly connected with the moving seat through an L-shaped rod, and the grinding roller is driven by the power assembly to rotate. The three supporting plates are used for supporting the inner wall of a sleeve part, the height position of the grinding roller is kept fixed, the grinding roller is driven to rotate through the independently-arranged power assembly, the situation that the grinding roller swings in the working process due to a lathe center frame and the gravity problem of the grinding roller is avoided, and the machining precision of the grinding roller is improved. And therefore, the grinding roller is prevented from colliding with the inner wall of the sleeve part, and the product percent of pass is effectively guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of kit processing, in particular to internal and external cylindrical grinding processing equipment for a lathe. Background Art

[0002] In the manufacturing industry, the finish of the outer and inner circles of parts is crucial to their performance and service life. In particular, the processing and sharpening of larger sleeve parts are usually carried out on heavy equipment. Due to the size of the workpiece, the speed and measurement accuracy during processing are limited, and it is impossible to obtain good processing accuracy, especially the surface roughness of the workpiece.

[0003] In the prior art, when grinding larger and longer sleeve-type parts, the lathe center frame will push the grinding roller into the sleeve-type parts during the reverse rotation of the sleeve-type parts, so that the inner wall of the sleeve-type parts will contact the grinding roller during the reverse rotation of the grinding roller, thereby grinding the inner circle of the sleeve-type parts. However, as the lathe center frame extends inside the sleeve-type parts, the grinding roller installed at the end of the lathe center frame and the influence of the lathe center frame's own gravity will cause the grinding roller and the end of the lathe center frame to deviate from the axial position of the lathe center frame, so that the lathe center frame will drive the grinding roller to swing to a large extent during the rotation, which can easily cause the grinding roller to collide with the inner wall of the sleeve-type parts, causing the inner wall of the sleeve-type parts to dent and reduce the qualified rate of the product.

[0004] Therefore, a lathe internal and external cylindrical grinding processing equipment is proposed. Summary of the invention

[0005] The purpose of the present invention is to provide an internal and external cylindrical grinding processing equipment for a lathe, which solves the problem that the grinding roller will collide with the inner wall of the sleeve-like parts due to swinging during the processing, and effectively ensures the qualified rate of the product. On the one hand, by supporting the inner wall of the sleeve-like parts circumferentially through three support plates, the height position of the grinding roller can be fixed, avoiding the collision of the grinding roller with the inner wall of the sleeve-like parts due to the rotation of the lathe center frame; on the other hand, by designing the size of the two through holes inside the connecting block, the end of the lathe center frame can rotate when it bends due to gravity, avoiding the change in the supporting strength of the three support plates, while ensuring that the lathe center frame can be pushed forward normally.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A lathe internal and external cylindrical grinding processing equipment includes a frame, a movable seat, a belt grinder, a lathe center frame, an L-shaped rod, a grinding roller and a power assembly, and also includes a mounting plate, a mounting mechanism, a driving mechanism and three supporting plates. The movable seat is arranged above the frame, the belt grinder is arranged on the movable seat, the lathe center frame is arranged above the frame and is fixedly connected to the movable seat through the L-shaped rod, the grinding roller is driven to rotate by the power assembly, the mounting plate is arranged above the frame and is connected to the lathe center frame through the mounting mechanism, the driving mechanism is arranged on the side wall of the mounting plate, the frame is provided with sleeve-type parts, and the mounting plate drives the three supporting plates to fit the inner wall of the sleeve-type parts through the driving mechanism, and moves the grinding roller to a working position.

[0008] By adopting the above technical solution, the grinding roller can be driven to automatically approach the inner wall of the sleeve-like parts when the three support plates are moving away from each other, and when the outer walls of the three support plates are pressed and fitted with the inner wall of the sleeve-like parts, the grinding roller and the inner wall of the sleeve-like parts are driven to be in a state of extrusion contact. At the same time, the height position of the grinding roller can be fixed, avoiding collision with the inner wall of the sleeve-like parts due to shaking during the grinding process, and effectively ensuring the qualified rate of the product.

[0009] Preferably, the grinding points of the grinding roller and the belt grinder are arranged at the same height, and the grinding points of the grinding roller and the belt grinder are arranged on the same diameter line of the sleeve-type parts.

[0010] It can be seen that there are many choices for grinding points. Taking into account the actual processing situation, if the diameter line where the two grinding points are located is not level with the bottom of the frame, the extrusion pressure at the two grinding points will cause the sleeve parts to tend to deflect, thereby affecting the grinding quality. By adopting the above-mentioned technical scheme, the inner and outer walls of the grinding points of the sleeve parts can be ground synchronously, effectively avoiding the tendency of the sleeve parts to tilt due to the inconsistency of the grinding points of the inner and outer walls during the grinding process.

[0011] Preferably, the driving mechanism includes an electric cylinder, a push block and three triangular blocks, the electric cylinder is fixedly arranged on a side of the mounting plate away from the center frame of the lathe, the output end of the electric cylinder is fixedly connected to the three triangular blocks through the push block, the inclined surface of each triangular block is provided with a slide groove, each of the slide grooves is slidably provided with a push rod, one end of each push rod away from the push block is fixedly connected to the support plate, the angle between two adjacent support plates is set to 120°, the side wall of each slide groove is symmetrically provided with two notches, each of the notches is slidably provided with a limit block, each of the limit blocks is fixedly connected to the corresponding push rod, the side wall of the power assembly is provided with a connecting mechanism, and the power assembly is connected to two of the push rods through the connecting mechanism.

[0012] It can be seen that there are many ways to drive the three support plates to move synchronously. Conventional driving methods include the cooperation of gears and racks and the cooperation of lead screws and threaded blocks. Considering the space limitations of actual work and the synchronous adjustment of the positions of the three support plates, this solution is adopted. During the operation of the electric cylinder, the three push rods can be driven to move synchronously through the three triangular blocks, so that after the three support plates are squeezed and fitted with the inner wall of the sleeve-like parts, the axis of the output end of the electric cylinder can be located at the same axis of the sleeve-like parts, and the angles between the two adjacent support plates are set equally, so that they can be clamped inside the sleeve-like parts with the least number of support plates, achieving the effect of fixing the height position of the grinding roller.

[0013] Preferably, the mounting mechanism includes a connecting block and two U-shaped rods, the connecting block is fixedly arranged at the end of the lathe center frame, two through holes are symmetrically opened inside the connecting block, the two U-shaped rods are movably inserted into the corresponding through holes, the two U-shaped rods are symmetrically arranged on the side walls of the mounting plate, and the length of the through hole in the axial direction of the lathe center frame is greater than the diameter of the U-shaped rod.

[0014] It can be seen that in the actual advancement process, using the lathe center frame to push the grinding roller to move and drive the grinding roller to rotate will cause the grinding roller to swing to a large extent under the influence of the bending moment of the lathe center frame, thereby causing the grinding roller to collide with the inner wall of the sleeve part during the rotation process. By adopting the above technical solution, only the lathe center frame is used to drive the grinding roller to move, and the power component is used to drive the grinding roller to rotate alone during the movement of the grinding roller, which can effectively avoid the swing of the grinding roller, thereby avoiding the grinding roller from colliding with the inner wall of the sleeve part during the rotation process.

[0015] Preferably, the connecting mechanism includes a limit plate, an insert, a fixed plate, an insert rod, a bolt, two connecting rods, a hinge seat, a telescopic rod and a constant pressure spring. The limit plate is fixedly arranged on the side wall of the mounting plate, one end of the insert tube is fixedly sleeved with the limit plate, and the other end of the insert tube is movably sleeved with the fixed plate. The insert rod is passed through the interior of the insert tube and fixedly connected to the power assembly, the bolt is passed through the interior of the insert tube and clamped with the insert rod, the two ends of each of the connecting rods are respectively hinged to the corresponding push rod through the hinge seat, the telescopic rod is fixedly arranged between the power assembly and the fixed plate, the constant pressure spring is sleeved on the rod wall of the telescopic rod, and the two ends of the constant pressure spring are respectively connected to the limit plate and the fixed plate.

[0016] It can be known that there are many ways to drive the grinding roller to contact the inner wall of the sleeve-type parts. Considering the defect of needing an additional power source to drive the position of the grinding roller, this solution is adopted. The grinding roller can be driven to move in the process of the three support plates moving away from each other and approaching the inner wall of the sleeve-type parts, and the inner wall of the sleeve-type parts first contacts the grinding roller before contacting the outer walls of the three support plates. The grinding roller can also keep in contact with the inner wall of the sleeve-type parts when processing sleeve-type parts of different sizes. Under the action of the constant pressure spring, the extrusion force between the grinding roller and the inner wall of the sleeve-type parts is constant. Under the action of the bolt, the position of the grinding roller can be fixed, so that the grinding roller maintains rigid contact with the inner wall of the sleeve-type parts, avoiding the impact of vibrations generated during the working process on the grinding accuracy.

[0017] Preferably, one of the push rods is horizontally arranged with the frame, and the horizontally arranged push rod and the grinding roller are arranged in the same horizontal plane and their axes are perpendicular to each other.

[0018] It can be seen that the three support plates can squeeze and fit multiple different positions of the inner wall of the sleeve-like parts, but considering that the grinding points of the grinding roller correspond to the grinding points of the belt grinder set outside the sleeve-like parts, this solution is adopted. During the grinding process, the grinding roller and the horizontally arranged push rod can squeeze the inner wall of the sleeve-like parts in opposite directions, thereby offsetting the tendency of the grinding roller to tilt when the inner wall is squeezed, effectively ensuring the stability of the sleeve-like parts during the grinding process.

[0019] Preferably, the surface of each support plate is mirror-polished, the width of the support plate is smaller than the length of the grinding roller, the grinding roller includes a front section, a middle section and a rear section, the support plate is arranged at the rear section, the lengths of the middle section and the rear section are equal, and the length of the front section is equal to the sum of the lengths of the middle section and the rear section.

[0020] It can be seen that the debris generated by the grinding roller during operation will fall in the propulsion direction of the support plate. In order to prevent the debris from scratching the support plate and the sleeve parts, this solution is adopted. The support plate is arranged at the rear position to prevent the debris generated by the grinding roller during the grinding of the inner wall of the sleeve parts from falling between the bottom support plate and the inner wall of the sleeve parts, thereby preventing the support plate from being worn by the debris generated by grinding and the inner wall of the sleeve parts during the movement.

[0021] Preferably, the curvature of the outer wall of each support plate is equal, and the curvature of the outer wall of each support plate decreases from the middle to both ends.

[0022] It can be seen that the three support plates can match the sleeve parts of different sizes, and the support plates of different shapes can be replaced, but considering that the replacement process is cumbersome, this solution is adopted. The curvature of the outer wall of the support plate is gradually reduced from the middle to the two ends, so that the support plate can adapt to sleeve parts of different sizes, so that sleeve parts of different sizes can be processed.

[0023] Preferably, the surface of the front half of the front section is truncated cone-shaped and is provided with a spiral groove, and the inclination direction of the spiral groove is opposite to the propulsion direction of the lathe center frame.

[0024] It can be seen that in order to prevent the protruding particles on the inner wall of the sleeve-like parts from affecting the movement of the grinding roller, they can be processed manually before processing, but considering the limited processing of longer sleeve-like parts, this solution is adopted. Under the action of the truncated cone surface, the protruding particles on the inner wall of the sleeve-like parts can be gradually ground to prevent the grinding roller from being blocked during the advancement process. The airflow generated by the spiral groove can be used to blow away the floating debris during the high-speed rotation of the grinding roller, further preventing the bottom support plate from contacting the fallen debris during the movement.

[0025] Preferably, the inclination angle of the truncated cone-shaped end face arranged on the surface of the front section is 45°, and the surface of the spiral groove close to the middle section is perpendicular to the axial direction of the grinding roller.

[0026] Taking into account that the debris generated by the raised particles after being ground will fall and come into contact with the bottom support plate, by adopting the above-mentioned technical solution, the ground particle debris can be blocked under the action of the inclined surface of the spiral groove, and the side wall of the spiral groove can be used to hit the debris under the high-speed rotation of the grinding roller, so that the debris falls in the propulsion direction of the grinding roller and the three support plates, thereby preventing the debris from causing wear of the support plate and the inner wall of the sleeve-type parts.

[0027] Compared with the prior art, the present invention has the following beneficial effects:

[0028] 1. The existing lathe internal and external cylindrical grinding processing equipment uses a rotating lathe center frame to push the grinding roller to grind the inner wall of the sleeve parts while moving. However, as the lathe center frame continues to advance, the grinding roller and the lathe center frame will bend and deform under the action of their own gravity, and the degree of deformation will be aggravated under the rotation of the lathe center frame, causing the grinding roller to swing during rotation and collide with the inner wall of the sleeve parts, thereby reducing the qualified rate. In order to improve this problem, three support plates are used to support the inner wall of the sleeve parts, so that the height position of the grinding roller remains fixed, and the grinding roller is driven to rotate by an independently set power component, which avoids the grinding roller from swinging during operation due to the lathe center frame and its own gravity, thereby avoiding the collision of the grinding roller with the inner wall of the sleeve parts, effectively ensuring the product qualified rate.

[0029] 2. Through the set driving component, the three support plates can be pushed to move synchronously during the operation of the electric cylinder, so that the outermost edges of the three support plates are squeezed on the inner wall of the sleeve parts and remain fixed, thereby achieving the effect of fixing the height position of the grinding roller. The grinding roller is driven to rotate by the power component, so that the rotation direction of the grinding roller and the sleeve parts is opposite, which can prevent the grinding roller from swinging during the grinding process.

[0030] 3. By setting up two telescopic rods and constant pressure springs, when the three support plates support the inner walls of sleeve parts of different sizes, the grinding roller can maintain an extrusion fit with the inner walls of the sleeve parts, and under the action of the constant pressure spring, the extrusion force can be kept constant. After the three support plates are extruded and fitted with the inner walls of the sleeve parts, the position of the insertion rod is fixed by bolts, so that the grinding roller maintains a rigid contact with the inner wall of the sleeve parts, thereby ensuring a constant grinding force.

[0031] 4. The L-shaped rod can be set to drive the moving seat to drive the belt grinder to move during the movement of the lathe center frame, ensuring the synchronous movement of the grinding roller and the belt grinder, and realizing the synchronous grinding of the inner and outer circles of the same point of the sleeve parts, avoiding the problem of tilting of the sleeve parts due to inconsistent grinding points.

[0032] 5. By setting the front half of the front section of the grinding roller into a truncated cone-shaped end face, the raised particles on the inner wall of the sleeve-type parts can be ground while the grinding roller is pushed by the lathe center frame, avoiding the raised particles from blocking the movement of the grinding roller. At the same time, the debris can be guided through the spiral groove during the grinding of the raised particles to avoid falling to one side of the bottom support plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a structural schematic diagram of the present invention;

[0034] Figure 2 It is a schematic diagram of the connection structure between the slide rail 1 and the belt grinder of the present invention;

[0035] Figure 3 It is a schematic diagram of the connection structure between the lathe center frame and the grinding roller, the power assembly and the mounting plate of the present invention;

[0036] Figure 4 For the present invention Figure 3 A magnified view of a local part A;

[0037] Figure 5 A schematic diagram of the connection structure of the lathe center frame and the grinding roller, the power assembly and the mounting plate from another perspective of the present invention;

[0038] Figure 6 For the present invention Figure 5 A magnified view of a local portion B;

[0039] Figure 7 It is a schematic diagram of the planar connection structure of the grinding roller and three support plates of the present invention;

[0040] Figure 8 It is a schematic structural diagram of the grinding roller of the present invention.

[0041] In the figure: 1, frame; 2, moving seat; 21, slide rail 1; 22, slide seat 1; 23, slide rail 2; 24, slide seat 2; 25, bracket; 3, belt grinder; 4, lathe center frame; 5, L-shaped rod; 6, grinding roller; 61, front section; 62, middle section; 63, rear section; 611, spiral groove; 7, power assembly; 71, motor; 72, L-shaped plate; 8, mounting plate; 9, mounting mechanism; 91, connecting block; 92, U-shaped rod; 93, through hole ; 10. Driving mechanism; 101. Electric cylinder; 102. Push block; 103. Triangular block; 104. Push rod; 105. Limit block; 1031. Slide groove; 1032. Notch; 11. Support plate; 12. Sleeve parts; 13. Connecting mechanism; 131. Limit plate; 132. Insert pipe; 133. Fixing plate; 134. Insert rod; 135. Bolt; 136. Connecting rod; 137. Articulated seat; 138. Telescopic rod; 139. Constant pressure spring. DETAILED DESCRIPTION

[0042] 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.

[0043] See also Figures 1 to 8 The present invention provides a lathe internal and external cylindrical grinding processing equipment, and the technical solution is as follows:

[0044] For details, please refer to Figure 1 , Figure 2 and Figure 3A lathe internal and external cylindrical grinding processing equipment, including a frame 1, a moving seat 2, a belt grinder 3, a lathe center frame 4, an L-shaped rod 5, a grinding roller 6 and a power assembly 7, and also includes a mounting plate 8, a mounting mechanism 9, a driving mechanism 10 and three support plates 11. The moving seat 2 is arranged above the frame 1, the belt grinder 3 is arranged on the moving seat 2, the lathe center frame 4 is arranged above the frame 1 and is fixedly connected to the moving seat 2 through the L-shaped rod 5. The moving seat 2 includes a slide rail 21, a slide seat 22, a slide rail 23, a slide seat 24 and a bracket 25. The slide rail 21 is fixedly arranged on the upper surface of the frame 1, the slide seat 22 is slidably arranged on the slide rail 21 and is fixedly connected to the lathe center frame 4 through the L-shaped rod 5. Rail 2 23 is an electric slide rail and is fixedly arranged on slide seat 1 22, slide seat 24 is slidably arranged on slide rail 23, bracket 25 is fixedly arranged on slide seat 24 and fixedly connected to belt grinder 3, grinding roller 6 and grinding point of belt grinder 3 are arranged at the same height, frame 1 is provided with sleeve-like parts 12, grinding roller 6 and grinding point of belt grinder 3 are arranged on the same diameter line of sleeve-like parts 12, grinding roller 6 is driven to rotate by power assembly 7, power assembly 7 comprises motor 71 and L-shaped plate 72, motor 71 is fixedly arranged on the side wall of L-shaped plate 72, output end of motor 71 passes through L-shaped plate 72 and is fixedly connected to grinding roller 6, L-shaped plate 72 is fixedly connected to the end of two telescopic rods 138.

[0045] Under the action of the L-shaped rod 5, the lathe center frame 4 can push the slide 1 22 to move. Under the action of the slide rail 23, the slide 2 24 can be driven through the bracket 25 to drive the belt grinder 3 to approach the sleeve part 12 and contact the outer wall of the sleeve part 12, so that the belt grinder 3 can grind the outer wall of the sleeve part 12 during operation, and can synchronously grind the inner and outer walls of the sleeve part 12 grinding points, effectively avoiding the tilting tendency of the sleeve part 12 due to the inconsistency of the grinding points of the inner and outer walls during the grinding process.

[0046] As an embodiment of the present invention, refer to Figure 3 and Figure 4The driving mechanism 10 is arranged on the side wall of the mounting plate 8. The mounting plate 8 drives the three support plates 11 to fit the inner wall of the sleeve-like parts 12 through the driving mechanism 10, and at the same time moves the grinding roller 6 to the working position. The driving mechanism 10 includes an electric cylinder 101, a push block 102 and three triangular blocks 103. The electric cylinder 101 is fixedly arranged on the side of the mounting plate 8 away from the center frame 4 of the lathe. The output end of the electric cylinder 101 is fixedly connected to the three triangular blocks 103 through the push block 102. Each triangular block 103 The inclined surfaces are all provided with sliding grooves 1031, and a push rod 104 is slidably provided inside each sliding groove 1031. The end of each push rod 104 away from the push block 102 is fixedly connected to the support plate 11, and the angle between two adjacent support plates 11 is set to 120°. The side walls of each sliding groove 1031 are symmetrically provided with two notches 1032, and a limit block 105 is slidably provided inside each notch 1032, and each limit block 105 is fixedly connected to the corresponding push rod 104.

[0047] As an embodiment of the present invention, refer to Figure 5 The mounting plate 8 is arranged above the frame 1 and connected to the lathe center frame 4 through the mounting mechanism 9. The mounting mechanism 9 includes a connecting block 91 and two U-shaped rods 92. The connecting block 91 is fixedly arranged at the end of the lathe center frame 4. Two through holes 93 are symmetrically opened inside the connecting block 91. The two U-shaped rods 92 are movably penetrated into the corresponding through holes 93 respectively. The two U-shaped rods 92 are symmetrically arranged on the side wall of the mounting plate 8. The length of the through hole 93 in the axial direction of the lathe center frame 4 is greater than the diameter of the U-shaped rod 92.

[0048] As the lathe center frame 4 gradually extends inside the sleeve-like part 12, its own gravity and the gravity of the grinding roller 6 will cause the end position of the lathe center frame 4 to bend. By utilizing the set through hole 93, when the end of the lathe center frame 4 bends due to its own gravity and the gravity of the grinding roller 6, the connecting block 91 can be driven to rotate, and the rotating connecting block 91 still maintains a sleeve connection with the two parts. As the lathe center frame 4 is advanced, the grinding roller 6 can still be pushed to move.

[0049] As an embodiment of the present invention, refer to Figure 5 and Figure 6The side wall of the power assembly 7 is provided with a connecting mechanism 13, and the power assembly 7 is connected to two of the push rods 104 through the connecting mechanism 13. The connecting mechanism 13 includes a limit plate 131, a plug 132, a fixing plate 133, a plug 134, a bolt 135, two connecting rods 136, a hinge seat 137, a telescopic rod 138 and a constant pressure spring 139. The limit plate 131 is fixedly arranged on the side wall of the mounting plate 8, one end of the plug 132 is fixedly sleeved with the limit plate 131, and the other end of the plug 132 is fixedly sleeved with the fixing plate 1 33 movable sleeve, the insertion rod 134 is inserted into the interior of the insertion tube 132 and is fixedly connected to the power component 7, the bolt 135 is inserted into the interior of the insertion tube 132 and is clamped with the insertion rod 134, the two ends of each connecting rod 136 are respectively hinged to the corresponding push rod 104 through the hinge seat 137, the telescopic rod 138 is fixedly set between the power component 7 and the fixed plate 133, the constant pressure spring 139 is sleeved on the rod wall of the telescopic rod 138, and the two ends of the constant pressure spring 139 are respectively connected to the limit plate 131 and the fixed plate 133.

[0050] It can be seen that under the action of the two connecting rods 136 and the corresponding articulated seats 137, the three push rods 104 can drive the power assembly 7 to drive the grinding roller 6 to move in the process of moving away from each other. Under the action of the constant pressure spring 139, on the one hand, the grinding roller 6 can be squeezed to a state of contact with the inner wall of the sleeve part 12, and on the other hand, the squeezing force can always be kept constant, so that the grinding effect on each sleeve part 12 is the same.

[0051] As an embodiment of the present invention, refer to Figure 7 One of the push rods 104 is horizontally arranged with the frame 1, and the horizontally arranged push rod 104 and the grinding roller 6 are arranged in the same horizontal plane and the axes of the two are perpendicular to each other.

[0052] During the grinding process, the grinding roller 6 and the horizontally arranged push rod 104 can squeeze the inner wall of the sleeve-like part 12 in opposite directions, thereby offsetting the tilting tendency of the grinding roller 6 when the inner wall is squeezed, and effectively ensuring the stability of the sleeve-like part 12 during the grinding process.

[0053] As an embodiment of the present invention, refer to Figure 5 , Figure 7 and Figure 8 The surface of each support plate 11 is mirror-polished, the width of the support plate 11 is smaller than the length of the grinding roller 6, the grinding roller 6 includes a front section 61, a middle section 62 and a rear section 63, the support plate 11 is arranged at the rear section 63, the lengths of the middle section 62 and the rear section 63 are equal, and the length of the front section 61 is equal to the sum of the lengths of the middle section 62 and the rear section 63.

[0054] Setting the support plate 11 at the rear section 63 position can prevent the debris generated by the grinding roller 6 during the grinding of the inner wall of the sleeve-like part 12 from falling directly between the bottom support plate 11 and the inner wall of the sleeve-like part 12, thereby preventing the support plate 11 from being worn by the inner wall of the sleeve-like part 12 due to the debris generated by grinding during the movement.

[0055] As an embodiment of the present invention, refer to Figure 7 The curvature of the outer wall of each support plate 11 is equal, and the curvature of the outer wall of each support plate 11 decreases from the middle to both ends.

[0056] By gradually decreasing the curvature of the outer wall of the support plate 11 from the middle to both ends, the support plate 11 can adapt to sleeve parts 12 of different sizes, so that sleeve parts 12 of different sizes can be processed. When clamping a sleeve part 12 with a larger inner diameter, the clamping point is located near the middle of the outer wall of the support plate 11, and when clamping a sleeve part 12 with a smaller inner diameter, the clamping point is located close to the two ends of the outer wall of the support plate 11.

[0057] As an embodiment of the present invention, refer to Figure 8 The surface of the front half of the front section 61 is in a truncated cone shape and is provided with a spiral groove 611 . The inclination direction of the spiral groove 611 is opposite to the propulsion direction of the lathe center frame 4 .

[0058] Under the action of the truncated cone surface, the protruding particles on the inner wall of the sleeve-type parts 12 can be gradually ground to prevent the grinding roller 6 from being blocked during the advancement process. The airflow generated by the spiral groove 611 can be used to blow away the floating debris during the high-speed rotation of the grinding roller 6 to prevent the bottom support plate 11 from contacting the fallen debris during the movement.

[0059] As an embodiment of the present invention, refer to Figure 8 The inclination angle of the truncated cone-shaped end face arranged on the surface of the front section 61 is 45°, and the surface of the spiral groove 611 close to the middle section 62 is perpendicular to the axial direction of the grinding roller 6.

[0060] Under the action of the inclined surface of the spiral groove 611, the ground particle debris can be blocked, and the side wall of the spiral groove 611 can be used to hit the debris under the high-speed rotation of the grinding roller 6, so that the debris falls in the propulsion direction of the grinding roller 6 and the three support plates 11, thereby preventing the debris from causing wear on the inner wall of the support plate 11 and the sleeve-like parts 12.

[0061] Working principle:

[0062] After the sleeve-like part 12 is placed on the frame 1 and clamped, the front section 61 of the grinding roller 6 is pushed into the inside of the sleeve-like part 12 through the lathe center frame 4, and the electric cylinder 101 is started. The output end of the electric cylinder 101 drives the push block 102 to move. During the movement of the push block 102, the three triangular blocks 103 are driven to move synchronously. When each triangular block 103 moves, the notch 1032 provided on the side wall of each slide groove 1031 will squeeze the corresponding limit block 105 respectively, and the squeezed limit block 105 will drive the corresponding push rod 104 to move, so that the three push rods 104 are away from each other;

[0063] When the push rods 104 on both sides of the grinding roller 6 move, the hinge effect of the hinge seat 137 and the connecting rod 136 can drive the fixed plate 133 to move. When the fixed plate 133 moves, it can drive the power assembly 7 to drive the grinding roller 6 to keep in contact with the inner wall of the sleeve part 12 through the two telescopic rods 138 and the constant pressure spring 139. Under the action of the constant pressure spring 139, although the fixed plate 133 is constantly approaching the inner wall of the sleeve part 12, it can always ensure that the extrusion force between the grinding roller 6 and the inner wall of the sleeve part 12 is constant. After the three support plates 11 are squeezed and fitted with the inner wall of the sleeve part 12, the position of the insertion rod 134 is fixed by the bolt 135 to ensure the rigid contact between the grinding roller 6 and the inner wall of the sleeve part 12, so as to avoid the collision between the grinding roller 6 and the inner wall of the sleeve part 12 due to the vibration of the whole equipment during the grinding process, thereby effectively ensuring the grinding accuracy.

[0064] Start the belt grinder 3 and adjust the position of the belt grinder 3 through the bracket 25, so that the belt grinder 3 contacts and squeezes the outer wall of the sleeve part 12, so as to achieve synchronous grinding of the inner and outer walls of the sleeve part 12. During grinding, the lathe center frame 4 is used to push the connecting block 91 to move. During the movement of the connecting block 91, the two U-shaped rods 92 squeeze the mounting plate 8, so that the grinding roller 6 is pushed toward the inside of the sleeve part 12 during the rotation. As the lathe center frame 4 is continuously pushed, the end of the lathe center frame 4 will move toward the sleeve under the action of its own gravity. The bottom position of the sleeve-like part 12 is bent, and when the end of the lathe center frame 4 is bent, the size design of the through hole 93 can drive the connecting block 91 to rotate, and always drive the mounting plate 8 to move during the advancement process, thereby avoiding the three support plates 11 from having a tendency to tilt, so that the extrusion pressure between each support plate 11 and the inner wall of the sleeve-like part 12 can be kept constant, and under the action of the L-shaped rod 5, the moving seat 2 can drive the belt grinder 3 and the grinding roller 6 to move synchronously, always ensuring that the grinding points of the inner and outer walls of the sleeve-like part 12 move synchronously.

[0065] 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 lathe internal and external cylindrical grinding processing equipment, comprising a frame (1), a movable seat (2), a belt grinder (3), a lathe center frame (4), an L-shaped rod (5), a grinding roller (6) and a power assembly (7), characterized in that: The invention also comprises a mounting plate (8), a mounting mechanism (9), a driving mechanism (10) and three supporting plates (11); the movable seat (2) is arranged above the frame (1); the belt grinder (3) is arranged on the movable seat (2); the lathe center frame (4) is arranged above the frame (1) and is fixedly connected to the movable seat (2) through an L-shaped rod (5); the grinding roller (6) is driven to rotate by a power assembly (7); the mounting plate (8) is arranged above the frame (1) and is connected to the lathe center frame (4) through the mounting mechanism (9); the driving mechanism (10) is arranged on the side wall of the mounting plate (8); a sleeve-like part (12) is provided on the frame (1); the mounting plate (8) drives the three supporting plates (11) to fit the inner wall of the sleeve-like part (12) through the driving mechanism (10) and moves the grinding roller (6) to a working position.

2. The lathe internal and external cylindrical grinding equipment according to claim 1, characterized in that: The grinding points of the grinding roller (6) and the belt grinder (3) are arranged at the same height, and the grinding points of the grinding roller (6) and the belt grinder (3) are arranged on the same diameter line of the sleeve-type part (12).

3. The lathe internal and external cylindrical grinding equipment according to claim 1, characterized in that: The driving mechanism (10) comprises an electric cylinder (101), a push block (102) and three triangular blocks (103); the electric cylinder (101) is fixedly arranged on a side of a mounting plate (8) away from a center frame (4) of a lathe; an output end of the electric cylinder (101) is fixedly connected to the three triangular blocks (103) via the push block (102); a sliding groove (1031) is provided on the inclined surface of each triangular block (103); a push rod (104) is slidably arranged inside each sliding groove (1031); and each push rod (104) is located away from a side of the push block (102). The ends are fixedly connected to the support plate (11), the angle between two adjacent support plates (11) is set to 120°, the side wall of each slide groove (1031) is symmetrically provided with two notches (1032), a limit block (105) is slidably provided inside each notch (1032), each limit block (105) is fixedly connected to the corresponding push rod (104), the side wall of the power assembly (7) is provided with a connecting mechanism (13), and the power assembly (7) is connected to two of the push rods (104) through the connecting mechanism (13).

4. The lathe internal and external cylindrical grinding equipment according to claim 3, characterized in that: The mounting mechanism (9) comprises a connecting block (91) and two U-shaped rods (92); the connecting block (91) is fixedly arranged at the end of a lathe center frame (4); two through holes (93) are symmetrically provided inside the connecting block (91); the two U-shaped rods (92) are movably arranged in the corresponding through holes (93); the two U-shaped rods (92) are symmetrically arranged on the side wall of the mounting plate (8); and the length of the through hole (93) in the axial direction of the lathe center frame (4) is greater than the diameter of the U-shaped rod (92).

5. The lathe internal and external cylindrical grinding equipment according to claim 4, characterized in that: The connecting mechanism (13) comprises a limit plate (131), an inserting tube (132), a fixing plate (133), an inserting rod (134), a bolt (135), two connecting rods (136), a hinge seat (137), a telescopic rod (138) and a constant pressure spring (139); the limit plate (131) is fixedly arranged on the side wall of the mounting plate (8); one end of the inserting tube (132) is fixedly sleeved with the limit plate (131); the other end of the inserting tube (132) is movably sleeved with the fixing plate (133); the inserting rod (134) is inserted into the inserting tube (132) and the fixing plate (133); ) and is fixedly connected to the power assembly (7), the bolt (135) is passed through the inside of the insertion tube (132) and is clamped with the insertion rod (134), the two ends of each connecting rod (136) are respectively hinged to the corresponding push rod (104) through a hinge seat (137), the telescopic rod (138) is fixedly arranged between the power assembly (7) and the fixed plate (133), the constant pressure spring (139) is sleeved on the rod wall of the telescopic rod (138), and the two ends of the constant pressure spring (139) are respectively connected to the limit plate (131) and the fixed plate (133).

6. The lathe internal and external cylindrical grinding equipment according to claim 5, characterized in that: One of the push rods (104) is horizontally arranged with the frame (1); the horizontally arranged push rod (104) and the grinding roller (6) are arranged on the same horizontal plane, and their axes are perpendicular to each other.

7. The lathe internal and external cylindrical grinding equipment according to claim 6, characterized in that: The surface of each support plate (11) is mirror-polished, the width of the support plate (11) is smaller than the length of the grinding roller (6), the grinding roller (6) comprises a front section (61), a middle section (62) and a rear section (63), the support plate (11) is arranged at the rear section (63), the lengths of the middle section (62) and the rear section (63) are equal, and the length of the front section (61) is equal to the sum of the lengths of the middle section (62) and the rear section (63).

8. The lathe internal and external cylindrical grinding equipment according to claim 7, characterized in that: The curvature of the outer wall of each support plate (11) is equal, and the curvature of the outer wall of each support plate (11) is arranged to decrease from the middle to both ends.

9. The lathe internal and external cylindrical grinding equipment according to claim 7, characterized in that: The surface of the front half of the front section (61) is arranged in a truncated cone shape and is provided with a spiral groove (611) on the surface. The inclination direction of the spiral groove (611) is opposite to the propulsion direction of the lathe center frame (4).

10. The lathe internal and external cylindrical grinding equipment according to claim 9, characterized in that: The inclination angle of the truncated cone-shaped end face arranged on the surface of the front section (61) is 45°, and the surface of the spiral groove (611) close to the middle section (62) is perpendicular to the axial direction of the grinding roller (6).

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