Coreless grinder for small cylinder liner

Abstract

The application relates to the technical field of grinding machines, in particular to a coreless grinding machine for small cylinder sleeve machining, which comprises a grinding machine base, a grinding wheel and a guide wheel, the grinding wheel and the guide wheel are arranged on the grinding machine base, a workpiece supporting plate is arranged between the grinding wheel and the guide wheel, a return lifting shaft is arranged above the workpiece supporting plate between the grinding wheel and the guide wheel, the return lifting shaft is parallel to the axis of the grinding wheel, and a mounting hidden groove is arranged in the return lifting shaft; after the cylinder sleeve grinding machining moves to the position of a cylinder sleeve position sensor, the cylinder sleeve is lifted by the return lifting shaft, and automatically slides back to the side where the staff is located, so that the personnel on the other side for taking the machined cylinder sleeve is saved.

Description

Technical Field

[0001] This invention relates to the field of grinding technology, specifically to a centerless grinding machine for machining small cylinder liners. Background Technology

[0002] A centerless grinder, also known as a centerless grinding machine, is a type of grinding machine that does not require the workpiece to be positioned by an axis. It mainly consists of three mechanisms: a grinding wheel, a guide wheel, and a workpiece support. The grinding wheel is responsible for the actual grinding work, the guide wheel controls the rotation of the workpiece and the feed rate of the workpiece, and the workpiece support supports the workpiece during grinding. Because cylinder liners have thin walls and are easily deformed when clamped, centerless grinders are usually used for grinding.

[0003] During the grinding process, axial feed is achieved by adjusting the tilt angle of the guide wheel axis. Therefore, during the grinding of cylinder liners in a centerless grinder, they are usually placed between the grinding wheel and the guide wheel from one side of the grinder. As grinding progresses, the cylinder liner is automatically fed axially and moved out from the other side of the grinder. In the prior art, a workpiece basket is usually set up on the other side to receive the automatically removed workpiece. However, because the cylinder liner wall is thin, the impact of falling into the basket can affect the quality of the cylinder liner and even cause slight deformation. Some companies set up a receiving position on the other side and assign separate staff to receive the cylinder liners that have been automatically removed after grinding, which significantly increases the cost. Summary of the Invention

[0004] The purpose of this invention is to provide a centerless grinding machine for machining small cylinder liners, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a centerless grinding machine for machining small cylinder liners, comprising a grinding machine base, a grinding wheel, and a guide wheel. Both the grinding wheel and the guide wheel are mounted on the grinding machine base. A workpiece support plate is disposed between the grinding wheel and the guide wheel. A return lifting shaft is disposed above the workpiece support plate between the grinding wheel and the guide wheel. The return lifting shaft is parallel to the axis of the grinding wheel. A mounting concealed groove is formed in the return lifting shaft, and a cylinder liner position sensor is embedded and fixed in the mounting concealed groove. The cylinder liner position sensor is used to... The position of the cylinder liner is detected. A control slider is provided at one end of the return lifting shaft. A limit slide is provided on the outside of the control slider. The limit slide is fixedly installed with the grinding machine base. The control slider can slide up and down inside the limit slide. A swing control mechanism is provided inside and outside the control slider. When the cylinder liner position sensor detects the cylinder liner, the swing control mechanism drives the control slider to move upward inside the limit slide. After moving a certain distance, it controls the end of the return lifting shaft away from the control slider to swing downward.

[0006] The lowering control mechanism includes a slider inner groove, a fixed horizontal shaft, and a control swing plate. The slider inner groove is provided inside the slider, and a fixed horizontal shaft is fixedly installed on the inner wall of the slider inner groove. The control swing plate is oscillatingly installed on the outside of the fixed horizontal shaft, and the control swing plate is integrally fixed to the end of the return lifting shaft.

[0007] The lower surface of the control swing plate is provided with a positioning blind groove, and a support spring is provided in the positioning blind groove. A limit pressure edge is fixedly provided on the upper surface of the inner groove of the slider. The support spring provides an upward elastic thrust to the control swing plate, so that the control swing plate makes contact with the limit pressure edge. At this time, the return lifting shaft is in a horizontal state.

[0008] A lifting control cylinder is provided below the sub-control slider. The lifting control cylinder drives the sub-control slider to slide up and down along the length of the limiting slide. A right-angle pressure plate is fixedly provided at the upper end of the limiting slide. When the sub-control slider rises to a certain height relative to the limiting slide, the right-angle pressure plate will press against the upper surface of the control swing plate, causing the control swing plate to swing. At this time, the end of the return lifting shaft away from the sub-control slider swings downward.

[0009] The return lifting shaft has a cylindrical shaft cavity inside, with one end of the cylindrical shaft cavity open away from the location of the control slider. A dynamic extension inner shaft is inserted into the cylindrical shaft cavity, and the dynamic extension inner shaft is in sealed contact with the cylindrical shaft cavity. The return lifting shaft and the control swing plate have an interconnecting flow channel. One end of the interconnecting flow channel is connected to a movable connecting pipe, and the other end of the interconnecting flow channel is connected to the cylindrical shaft cavity.

[0010] The upper surface of the control slider is fixedly provided with a slider vertical shaft, the upper surface of the limiting slide is fixedly provided with a medium cylinder, a piston is provided in the medium cylinder, the piston is in sealed contact with the inner wall surface of the medium cylinder, and the piston is fixedly connected to the upper end of the slider vertical shaft.

[0011] The vertical shaft of the slider has an inner cavity. The upper end of the inner cavity of the vertical shaft passes through the piston body and communicates with the inner cavity of the medium cylinder. The lower end of the inner cavity of the vertical shaft is connected to the movable connecting pipe. The upper surface of the limiting slide has a vent hole that communicates with the lower part of the medium cylinder.

[0012] The dynamic extension inner shaft has an inner cavity, in which an electromagnet module is installed. A contact spring is fixedly installed at the end of the dynamic extension inner shaft. The contact spring makes slidable conductive contact with the inner wall surface of the cylindrical shaft cavity. A first guide plate is fixedly installed on the outside of the control swing plate. The power supply of one pole of the electromagnet module is sequentially connected to the first guide plate through the contact spring, the return lifting shaft, the control swing plate, and the first guide plate.

[0013] A spiral wire is provided inside the cylindrical shaft cavity, and a second guide plate is embedded on the outside of the return lifting shaft. The return lifting shaft and the second guide plate are in an insulated and sealed contact. The other pole of the electromagnet module is powered through the spiral wire and connected to the second guide plate.

[0014] A tool table is provided on the outside of the grinding machine base, and a control cabinet is provided on the tool table. A drive motor, a transmission chamber and a guide wheel control chamber are fixedly provided on the upper part of the grinding machine base. The drive motor drives the grinding wheel to rotate through the transmission chamber, and the guide wheel control chamber drives and controls the angle of the guide wheel. A limit stop is fixedly provided on the outer surface of the return lifting shaft.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] The present invention relates to a small coreless grinding machine for machining cylinder liners. Through the cooperation of a return lifting shaft, a split control slider, and a swing control mechanism, the cylinder liner can be lifted by the return lifting shaft after the grinding process moves to the position of the cylinder liner position sensor. The cylinder liner will then automatically slide back to the side where the operator is located, saving the personnel occupied on the other side when receiving the processed cylinder liner. This allows the cylinder liner workpiece to be put in and returned on the same side.

[0017] This invention, through the coordinated arrangement of a dynamically extended inner shaft, a medium cylinder, a slider vertical shaft, and a swing control mechanism, enables the dynamically extended inner shaft to automatically extend during the lifting and return of the cylinder liner, in conjunction with the movement of the separately controlled slider. This extends the length of the return lifting shaft, ensuring that the return position is far away from the grinding wheel and guide wheel, thus improving safety. Furthermore, during placement and processing, the dynamically extended inner shaft retracts, resulting in a shorter overall length of the return lifting shaft and avoiding interference with the placement and processing of the cylinder liner.

[0018] By using an electromagnet module, contact springs, and spiral wires, the electromagnet module can be powered and controlled without affecting the dynamic extension and retraction of the inner shaft. When the cylinder liner slides down and moves near the electromagnet module, the electromagnet module can generate magnetic restraint, thereby achieving a deceleration effect and making it easier for workers to retrieve the cylinder liner. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0020] Figure 2 This is a front view of the overall structure of the present invention.

[0021] Figure 3 This is a schematic diagram of the structure at the return lifting shaft of the present invention.

[0022] Figure 4 for Figure 3Enlarged schematic diagram of region A in the middle.

[0023] Figure 5 for Figure 4 Enlarged schematic diagram of region B in the middle.

[0024] Figure 6 This is a three-dimensional half-section diagram of the return lifting axis of the present invention.

[0025] Figure 7 for Figure 6 Enlarged schematic diagram of region C in the middle.

[0026] Figure 8 for Figure 7 Enlarged schematic diagram of region D in the middle.

[0027] Figure 9 for Figure 7 Enlarged schematic diagram of region E in the middle.

[0028] Figure 10 for Figure 9 Enlarged schematic diagram of region F in the middle.

[0029] In the diagram: 1. Grinding machine base; 2. Grinding wheel; 3. Guide wheel; 4. Workpiece support plate; 5. Return lifting shaft; 6. Hidden mounting slot; 7. Cylinder liner position sensor; 8. Sub-control slider; 9. Limiting slide rail; 801. Slider inner groove; 802. Fixed horizontal axis; 803. Control swing plate; 804. Positioning blind groove; 805. Support spring; 806. Limiting pressure edge; 807. Lifting control cylinder; 808. Right-angle pressure edge; 809. Cylindrical shaft cavity; 810. Dynamic extension inner shaft; 811. Interconnecting flow channel; 812, movable connecting pipe; 813, slider vertical shaft; 814, medium cylinder; 815, piston body; 816, vertical shaft inner cavity; 817, breather hole; 501, receiving inner cavity; 502, electromagnet module; 503, contact spring; 504, spiral wire; 505, first guide plate; 506, second guide plate; 101, tool table; 102, control cabinet; 201, drive motor; 202, transmission compartment; 301, guide wheel control compartment; 507, limit stop bar. Detailed Implementation

[0030] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] Please see Figures 1 to 10 This invention provides a technical solution: a centerless grinding machine for machining small cylinder liners, such as... Figure 1As shown, the grinding machine includes a grinding machine base 1, a grinding wheel 2, and a guide wheel 3. Both the grinding wheel 2 and the guide wheel 3 are mounted on the grinding machine base 1. The guide wheel 3 is made of rubber. A workpiece support plate 4 is provided between the grinding wheel 2 and the guide wheel 3. Figure 4 and Figure 5 As shown, a return lifting shaft 5 is provided above the workpiece support plate 4 between the grinding wheel 2 and the guide wheel 3. The return lifting shaft 5 is parallel to the axis of the grinding wheel 2. A mounting hidden groove 6 is provided in the return lifting shaft 5. A cylinder liner position sensor 7 is embedded and fixed in the mounting hidden groove 6. The cylinder liner position sensor 7 is used to detect the position of the cylinder liner. The cylinder liner position sensor 7 can be an inductive sensor or a capacitive sensor, as long as it can detect foreign objects above the cylinder liner position sensor 7.

[0032] A control slider 8 is provided at one end of the return lifting shaft 5. A limit slide 9 is provided on the outside of the control slider 8. The limit slide 9 is fixedly installed with the grinding machine base 1. The control slider 8 can slide up and down inside the limit slide 9. A swing control mechanism is provided inside and outside the control slider 8. When the cylinder liner position sensor 7 detects the cylinder liner, the swing control mechanism drives the control slider 8 to move upward inside the limit slide 9. After moving a certain distance, it controls the end of the return lifting shaft 5 away from the control slider 8 to swing downward.

[0033] like Figure 9 As shown, the lowering control mechanism includes a slider inner groove 801, a fixed horizontal shaft 802, and a control swing plate 803. The slider inner groove 801 is opened inside the slider 8. The fixed horizontal shaft 802 is fixedly installed on the inner wall of the slider inner groove 801. The control swing plate 803 is swung and installed on the outside of the fixed horizontal shaft 802. The control swing plate 803 is integrally fixed to the end of the return lifting shaft 5.

[0034] The lower surface of the control plate 803 is provided with a positioning blind groove 804, and a support spring 805 is provided in the positioning blind groove 804. The upper surface of the inner surface of the slider inner groove 801 is fixedly provided with a limiting pressure rib 806. The support spring 805 provides an upward elastic thrust to the control plate 803, so that the control plate 803 makes limited contact with the limiting pressure rib 806. At this time, the return lifting shaft 5 is in a horizontal state. The supporting elastic force of the support spring 805 must be strong enough so that the return lifting shaft 5 can still maintain a horizontal state after lifting the cylinder liner.

[0035] A lifting control cylinder 807 is provided below the sub-control slider 8. The lifting control cylinder 807 drives the sub-control slider 8 to slide up and down along the length of the limit slide 9. A right-angle pressure plate 808 is fixedly provided at the upper end of the limit slide 9. When the sub-control slider 8 rises to a certain height relative to the limit slide 9, the right-angle pressure plate 808 will press against the upper surface of the control swing plate 803, causing the control swing plate 803 to swing. At this time, the end of the return lifting shaft 5 away from the sub-control slider 8 swings downward.

[0036] The return lifting shaft 5 has a cylindrical shaft cavity 809 inside. The cylindrical shaft cavity 809 is open at one end away from the location of the control slider 8. A dynamic extension inner shaft 810 is inserted into the cylindrical shaft cavity 809. The dynamic extension inner shaft 810 is in sealed contact with the cylindrical shaft cavity 809. An interconnecting flow channel 811 is provided in the return lifting shaft 5 and the control swing plate 803. One end of the interconnecting flow channel 811 is connected to a movable connecting pipe 812, and the other end of the interconnecting flow channel 811 is connected to the cylindrical shaft cavity 809.

[0037] The upper surface of the control slider 8 is fixedly provided with a slider vertical shaft 813, and the upper surface of the limit slide 9 is fixedly provided with a medium cylinder 814. A piston 815 is provided in the medium cylinder 814. The piston 815 is in sealed contact with the inner wall surface of the medium cylinder 814. The piston 815 is fixedly connected to the upper end of the slider vertical shaft 813. The medium in the medium cylinder 814 can be hydraulic oil or air, etc.

[0038] The vertical shaft 813 of the slider has an inner cavity 816. The upper end of the inner cavity 816 passes through the piston body 815 and communicates with the inner cavity of the medium cylinder 814. The lower end of the inner cavity 816 is connected to the movable connecting pipe 812. The upper surface of the limiting slide 9 has a vent hole 817, which is connected to the lower part of the medium cylinder 814.

[0039] The dynamic extension inner shaft 810 has an inner cavity 501, in which an electromagnet module 502 is installed. A contact spring 503 is fixedly installed at the end of the dynamic extension inner shaft 810. The contact spring 503 makes sliding conductive contact with the inner wall surface of the cylindrical shaft cavity 809. A first guide plate 505 is fixedly installed on the outside of the control swing plate 803. The power supply of one pole of the electromagnet module 502 is connected to the first guide plate 505 through the contact spring 503, the return lifting shaft 5, the control swing plate 803, etc. The return lifting shaft 5 and the control swing plate 803 are all made of metal conductive material.

[0040] A helical wire 504 is installed inside the cylindrical shaft cavity 809, and a second guide plate 506 is embedded on the outside of the return lifting shaft 5. The return lifting shaft 5 and the second guide plate 506 are in an insulated and sealed contact; that is, the surface of the second guide plate 506 is covered with an insulating layer. While maintaining a sealed contact with the return lifting shaft 5, they are not electrically connected. The other pole of the electromagnet module 502 is powered through the helical wire 504 and connected to the second guide plate 506. The conductive connection between the electromagnet module 502 and the helical wire 504 is insulated and protected (not shown in detail in the figure). This allows the helical wire 504 to be inserted into the interior of the dynamic extension inner shaft 810 and welded to the power supply contacts of the electromagnet module 502. The outer surface of the helical wire 504 is covered with an insulating layer, thus achieving insulation separation between the helical wire 504 and the dynamic extension inner shaft 810.

[0041] A tool table 101 is provided on the outside of the grinding machine base 1. A control cabinet 102 is provided on the tool table 101. A drive motor 201, a transmission chamber 202 and a guide wheel control chamber 301 are fixedly provided on the upper part of the grinding machine base 1. The drive motor 201 drives the grinding wheel 2 to rotate through the transmission chamber 202. The guide wheel control chamber 301 drives and controls the angle of the guide wheel 3. A limit stop 507 is fixedly provided on the outer surface of the return lifting shaft 5.

[0042] When using the centerless grinding machine of this invention, as follows: Figure 1 and Figure 2 As shown, the cylinder liner workpiece is placed between the grinding wheel 2 and the guide wheel 3, above the workpiece support plate 4. The guide wheel 3 has a certain angle relative to the axis of the grinding wheel 2. During the grinding process, the cylinder liner will move from one side of the centerless grinder to the other side along the length of the workpiece support plate 4.

[0043] like Figure 3 , Figure 4 and Figure 5 As shown, as the cylinder liner moves axially, the return lifting shaft 5 will be inserted into the cylinder liner. When the cylinder liner moves to the position of the cylinder liner position sensor 7, it can be detected by the cylinder liner position sensor 7. At this time, the lifting control cylinder 807 extends and drives the sub-control slider 8 to move upward relative to the limit slide 9.

[0044] During the upward movement of the sub-control slider 8, the sub-control slider 8 drives the return lifting shaft 5 to move upward, and the return lifting shaft 5 lifts the cylinder liner, so that the cylinder liner moves out from between the grinding wheel 2 and the guide wheel 3, and stops the grinding process; at the same time, the piston body 815 moves upward inside the medium cylinder body 814, so that the medium inside the medium cylinder body 814 flows into the movable connecting pipe 812 through the vertical shaft inner cavity 816, and then enters the cylindrical shaft cavity 809 through the interconnecting flow channel 811, pushing the dynamic extension inner shaft 810 to extend out from the return lifting shaft 5.

[0045] As the sub-control slider 8 moves upward, when the right-angle pressure plate 808 comes into contact with the control swing plate 803, the right-angle pressure plate 808 pushes the control swing plate 803 to swing, causing the support spring 805 to be forcibly compressed. At this time, the end of the return lifting shaft 5 away from the sub-control slider 8 swings downward, and the cylinder liner sleeved on the outside of the return lifting shaft 5 slides down along the axial direction of the return lifting shaft 5. Since the dynamic extension inner shaft 810 extends, the guide length of the return lifting shaft 5 is greatly extended, and the cylinder liner slides from the return lifting shaft 5 onto the dynamic extension inner shaft 810, so that when the operator picks up the cylinder liner, he / she can stay away from the grinding wheel 2 and the guide wheel 3, thus improving safety.

[0046] The positive and negative terminals of the external power supply are connected to the second conductor 506 and the first conductor 505 respectively, thereby supplying power to the electromagnet module 502 and controlling the operation of the electromagnet module 502.

[0047] When the cylinder liner slides down to the position of the electromagnet module 502, power is supplied to the electromagnet module 502 to generate a magnetic force. The magnetic force attracts and binds the cylinder liner. At the same time, the magnetic attraction increases the friction between the cylinder liner and the dynamic extension inner shaft 810, which can slow down the sliding speed of the cylinder liner and make it easier for the staff to pick it up.

[0048] After completing one operation, the lifting control cylinder 807 retracts and resets, causing the sub-control slider 8 to descend. After losing the pressure of the right-angle pressure plate 808, it returns to the lifting shaft 5 and resets to the horizontal state under the support of the support spring 805. At the same time, the piston body 815 moves down inside the medium cylinder body 814, causing the negative pressure inside the medium cylinder body 814 to draw back. At this time, the dynamic extension inner shaft 810 automatically retracts and resets.

[0049] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A coreless grinding machine for small cylinder liner machining, comprising a grinding machine base (1), a grinding wheel (2) and a guide wheel (3), the grinding wheel (2) and the guide wheel (3) are arranged on the grinding machine base (1), a workpiece supporting plate (4) is arranged between the grinding wheel (2) and the guide wheel (3), characterized in that: The return lifting shaft (5) is parallel to the axis of the grinding wheel (2), a hidden mounting groove (6) is arranged in the return lifting shaft (5), a cylinder sleeve position sensor (7) is embedded and fixed in the hidden mounting groove (6), the cylinder sleeve position sensor (7) is used for detecting the position of the cylinder sleeve, a sub-control sliding block (8) is arranged at one end of the return lifting shaft (5), a limiting sliding groove (9) is arranged outside the sub-control sliding block (8), the limiting sliding groove (9) is fixedly installed on the grinding machine base (1), the sub-control sliding block (8) can slide up and down in the limiting sliding groove (9), a lower swing control mechanism is arranged inside and outside the sub-control sliding block (8), when the cylinder sleeve position sensor (7) detects the cylinder sleeve, the lower swing control mechanism drives the sub-control sliding block (8) to move upwards in the limiting sliding groove (9), and after moving a distance, the end of the return lifting shaft (5) away from the sub-control sliding block (8) swings downwards. ​ The lower hem control mechanism comprises a slider inner groove (801), a fixed horizontal shaft (802) and a control swing plate (803), the inside of the sub-control slider (8) is provided with the slider inner groove (801), the inner wall of the slider inner groove (801) is fixedly provided with the fixed horizontal shaft (802), the outer part of the fixed horizontal shaft (802) is swingingly provided with the control swing plate (803), and the control swing plate (803) is integrally fixed with the end of the return lifting shaft (5); the lower surface of the control swing plate (803) is provided with a positioning blind groove (804), the positioning blind groove (804) is provided with a supporting spring (805), the inside upper surface of the slider inner groove (801) is fixedly provided with a limiting pressure edge (806), the supporting spring (805) provides an upward elastic thrust to the control swing plate (803), so that the control swing plate (803) is in limiting contact with the limiting pressure edge (806), and at this time, the return lifting shaft (5) is in a horizontal state; the lower part of the sub-control slider (8) is provided with a lifting control cylinder (807), the sub-control slider (8) is driven to slide up and down along the length direction of the limiting slide (9) through the lifting control cylinder (807), the upper end position of the limiting slide (9) is fixedly provided with a right-angle pressure eave (808), when the sub-control slider (8) is lifted to a certain height relative to the limiting slide (9), the right-angle pressure eave (808) is pressed on the upper surface position of the control swing plate (803), so that the control swing plate (803) swings, and at this time, the end of the return lifting shaft (5) away from the sub-control slider (8) swings downward; the inside of the return lifting shaft (5) is provided with a cylindrical shaft cavity (809), one end of the cylindrical shaft cavity (809) away from the position of the sub-control slider (8) is open, a dynamic extension inner shaft (810) is inserted into the cylindrical shaft cavity (809), the dynamic extension inner shaft (810) is in sealing contact with the cylindrical shaft cavity (809), the return lifting shaft (5) and the control swing plate (803) are provided with a mutual flow channel (811), one end of the mutual flow channel (811) is provided with a movable connecting pipe (812), the other end of the mutual flow channel (811) is in communication with the cylindrical shaft cavity (809); the upper surface of the sub-control slider (8) is fixedly provided with a slider vertical shaft (813), the upper surface of the limiting slide (9) is fixedly provided with a medium cylinder (814), the medium cylinder (814) is provided with a piston body (815), the piston body (815) is in sealing contact with the inner wall surface of the medium cylinder (814), and the piston body (815) is fixedly connected with the upper end of the slider vertical shaft (813).The slider vertical shaft (813) is provided with a vertical shaft inner cavity (816), the upper end of the vertical shaft inner cavity (816) is communicated with the inner cavity of the medium cylinder (814) through the piston body (815), the lower end of the vertical shaft inner cavity (816) is communicated with the movable connecting pipe (812), the upper surface of the limiting slide (9) is provided with a breathing hole (817), and the breathing hole (817) is communicated with the lower part of the medium cylinder (814).

2. The compact coreless grinder for cylinder liner machining according to claim 1, characterized in that: The dynamic extension inner shaft (810) is provided with a containing inner cavity (501), the containing inner cavity (501) is provided with an electromagnet module (502), the end of the dynamic extension inner shaft (810) is fixedly provided with a contact spring (503), the contact spring (503) is in sliding conductive contact with the inner wall surface of the cylindrical shaft cavity (809), the outer portion of the control swing plate (803) is fixedly provided with a first guide piece (505), one pole of the electromagnet module (502) is powered and connected in conduction with the contact spring (503), the return lifting shaft (5), the control swing plate (803) and the first guide piece (505) in sequence.

3. The compact coreless grinder for cylinder liner machining according to claim 2, characterized in that: The cylindrical shaft cavity (809) is provided with a spiral wire (504), the return lifting shaft (5) is embedded and installed with a second guide piece (506), the return lifting shaft (5) and the second guide piece (506) are in insulation sealing contact, the other pole of the electromagnet module (502) is powered and connected in conduction with the spiral wire (504) and the second guide piece (506).

4. The compact coreless cylinder liner machining grinder according to claim 1, characterized by: The outer portion of the grinding machine base (1) is provided with a tool table (101), the tool table (101) is provided with a control cabinet (102), the upper portion of the grinding machine base (1) is fixedly provided with a driving motor (201), a transmission bin (202) and a guide wheel control bin (301), the driving motor (201) drives the grinding wheel (2) to rotate through the transmission bin (202), the guide wheel control bin (301) drives and controls the angle of the guide wheel (3), and the outer surface of the return lifting shaft (5) is fixedly provided with a limiting baffle (507).

Images