An inner wall grinding device for deep hole precision parts

Abstract

The present application relates to the technical field of grinding devices, and discloses an inner wall grinding device for deep hole precision parts, which is used to solve the problem of difficulty in judging whether the axis of the grinding component and the axis of the deep hole are offset. An inspection groove is provided in a circular array on the grinding component, a slider, an extrusion rod, a support spring and a coolant are provided in the inspection groove, an inspection hole and a slide needle are provided at the upper end of the inspection groove, an observation groove is provided on the side wall of the rotating shaft, a T-block and a reset spring are provided in the observation groove, and the slide needle is fixedly connected to the T-block; when the grinding component is placed in the deep hole, the side wall of the deep hole squeezes the extrusion rod and the slider, so that the slider squeezes the coolant, and the coolant pushes the slide needle and the T-block upward, and the position difference of the upward movement of several T-blocks is used to judge whether the axis of the grinding component and the axis of the deep hole of the precision component are in the same straight line, so as to judge the position of the axis of the grinding component before grinding, and prevent the situation where the deep hole precision of the precision component becomes low after grinding.

Description

Technical Field

[0001] The present application relates to the technical field of grinding devices, and in particular to a device for grinding the inner wall of a deep-hole precision component. Background Art

[0002] The processing of deep holes in precision parts is a complex and high-precision process involving multiple technologies and equipment. In order to reduce the roughness of the deep holes in precision parts and improve the dimensional accuracy, the inner wall of the deep holes in precision parts needs to be further polished to improve the wear resistance and sealing of the deep holes in precision parts.

[0003] When using a grinding device to grind deep holes in precision parts, it is necessary to first place the grinding component of the grinding device in the deep hole of the precision part, and then use a power motor to drive the grinding component to grind the deep hole. However, when placing the grinding component in the deep hole, it is only judged based on experience that the axis of the grinding component and the axis of the deep hole of the precision part are in the same straight line. If there is a certain deviation, when the grinding component grinds the deep hole of the precision part, the side wall of the deep hole of the precision part will move outward, thereby causing the diameter of the deep hole of the precision part to become larger, affecting the processing accuracy of the deep hole of the precision part. Summary of the invention

[0004] The present application proposes an inner wall grinding device for deep-hole precision parts, which has the advantages of magnifying the offset state between the axis of the grinding component and the axis of the deep hole, and being able to visually judge whether the axis of the grinding component and the axis of the deep hole are in the same straight line, so as to solve the problem of difficulty in judging whether there is an offset between the axis of the grinding component and the axis of the deep hole.

[0005] To achieve the above-mentioned purpose, the present application adopts the following technical scheme: a device for grinding the inner wall of a deep-hole precision component, comprising a base, a fixed component, a synchronous cylinder, a support plate, a power motor, a rotating shaft, a grinding component and a control device, wherein the grinding component comprises: an inspection groove, an annular array of which is opened in the grinding component; a slider, a sliding seal is installed in the inspection groove; an extrusion rod, fixedly connected to the side of the slider facing the outer wall of the grinding component, the extrusion rod penetrates and extends out of the side wall of the grinding component; a support spring, fixedly connected to the side of the slider facing the axis of the grinding component, the inspection groove and The side of the slider connected to the support spring is filled with coolant; an inspection hole is opened at the innermost top of the inspection groove; a sliding needle is installed in the inspection hole with a sliding seal, and the top end extends out of the inspection hole; the rotating shaft is provided with: an observation groove, a circular array is opened in the side wall of the rotating shaft; a T-block is slidably installed in the observation groove, one side extends out of the observation groove and is fixedly connected to the top of the sliding needle; a reset spring, one end of which is fixedly connected to the top of the T-block, and the other end is fixedly connected to the top of the observation groove; the side wall of the grinding component is provided with a grinding groove in a circular array, and a grinding block is provided in the grinding groove.

[0006] Furthermore, a ball is movably embedded in one end of the extrusion rod extending out of the inspection slot.

[0007] Furthermore, the distance between the top of the ball and the axis of the grinding component is greater than the distance between the outer wall of the grinding block and the axis of the grinding component.

[0008] Furthermore, two groups of blocking cloths are provided at the opening of the observation slot, and the two groups of blocking cloths are respectively located at the upper and lower ends of the T-shaped block, the top end of the blocking cloth at the upper end is fixedly connected to the top end of the observation slot, the bottom end of the blocking cloth at the lower end is fixedly connected to the bottom end of the observation slot, and the side walls of the blocking cloths are slidably connected to the side walls of the observation slot.

[0009] Furthermore, the support spring and the return spring are always in a compressed state.

[0010] Furthermore, the grinding block sliding seal is installed in the grinding groove, and the grinding component is provided with: an elastic block, one side of which is fixedly connected to the side of the grinding block facing the axis of the grinding component, and the other side is fixedly connected to the inner wall of the grinding groove; a plurality of groups of connecting holes I and connecting holes II are opened in the grinding component, and each group of connecting holes I and connecting holes II is used to connect the inspection groove and the grinding groove on the same side of the inspection groove; a normally closed solenoid valve is fixedly installed at the connection between the connecting hole I and the inspection groove; a one-way valve is fixedly installed at the connection between the connecting hole II and the inspection groove; an electromagnetic block is fixedly installed in the middle and lower position of the grinding component; the electromagnetic block and the normally closed electromagnetic valve are electrically connected to the control device.

[0011] Furthermore, the slider is a permanent magnet block, and the electromagnetic block generates a magnetic force that attracts the slider when energized.

[0012] Furthermore, the flow direction of the normally closed solenoid valve is from the inspection groove to the connecting hole I; the flow direction of the one-way valve is from the connecting hole II to the inspection groove.

[0013] Furthermore, a connecting rod is fixedly connected to the side wall of the inspection hole through which the sliding needle extends, and the connecting rod is N-shaped. The bottom end of the connecting rod passes through the grinding component and extends into the grinding groove. Wedge blocks are fixedly connected to both ends of the inspection hole; wedge grooves are provided on the side walls on both sides of the grinding block, and the inclined surface of the wedge block is close to the inclined surface of the wedge groove.

[0014] This application has the following beneficial effects:

[0015] 1. The present application provides an inner wall grinding device for deep-hole precision parts, wherein an inspection groove is opened in a ring array on the grinding component, a slider, an extrusion rod, a supporting spring and a coolant are arranged in the inspection groove, an inspection hole is opened at the upper end of the inspection groove, a sliding needle is arranged in the inspection hole, an observation groove is opened on the side wall of the rotating shaft, a T-block and a reset spring are arranged in the observation groove, and the sliding needle is fixedly connected to the T-block; when the grinding component is placed in the deep hole of the precision part, the side wall of the deep hole squeezes the extrusion rod and the slider, so that the slider squeezes the coolant in the inspection groove, and the coolant pushes the sliding needle and the T-block to move upward, and the position difference of the upward movement of several T-blocks is used to judge whether the axis center of the grinding component and the axis center of the deep hole of the precision part are in the same straight line, thereby judging the position of the axis center of the grinding component before grinding, and preventing the situation where the accuracy of the deep hole of the precision part becomes lower after grinding.

[0016] 2. The present application provides a device for grinding the inner wall of a deep-hole precision component, in which grinding grooves are opened in a ring array on a grinding component, a grinding block is slidably arranged in the grinding groove, a connecting hole I and a connecting hole II are opened between the inspection groove and the grinding block, a normally closed solenoid valve is arranged in the connecting hole I, a one-way valve is arranged in the connecting hole II, and an electromagnetic block is arranged in the grinding component; when starting, the electromagnetic block and the normally closed solenoid valve are energized by a control device, so that the electromagnetic block attracts the slider, and the coolant in the inspection groove enters the grinding groove through the normally closed solenoid valve and the connecting hole I, pushing the grinding block to move toward the side wall of the deep hole of the precision component, so that the grinding block is close to the inner wall of the deep hole, preventing the grinding block from being unable to grind the inner wall of the deep hole after being worn out after a period of use, thereby extending the service life of the grinding block.

[0017] 3. The present application provides a device for grinding the inner wall of a deep-hole precision component. After grinding, the normally closed solenoid valve and the solenoid block are powered off. Under the action of the elastic force of the supporting spring, a negative pressure is generated in the inspection tank, so that the coolant in the grinding tank flows back from the connecting hole II and the one-way valve. The circulating coolant cools the grinding block in the grinding tank to prevent the grinding block from being in a high-temperature state for a long time, which affects the grinding effect of the grinding block on the inner wall of the deep hole of the precision component.

[0018] 4. The present application provides a device for grinding the inner wall of a deep-hole precision component, which is characterized in that a connecting rod is fixedly connected to the top of a sliding needle, a wedge block is connected to the connecting rod, and a wedge groove is opened on the side wall of the grinding block; when the normally closed solenoid valve is energized and opened, the coolant in the inspection tank enters the grinding tank to push the grinding block. When the grinding block is positioned, under the action of the elastic force of a reset spring, the T-block and the sliding needle move downward, thereby driving the connecting rod and the wedge block to move downward until the inclined surface of the wedge block abuts against the inclined surface of the wedge groove, thereby limiting the grinding block to prevent the grinding block from being subjected to the action of centrifugal force during subsequent grinding, squeezing the inner wall, resulting in excessive grinding force, and affecting the grinding accuracy of the inner wall of the precision component. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings, which constitute a part of the specification, illustrate embodiments disclosed in the present application and, together with the description, serve to explain the principles disclosed in the present application.

[0020] The present disclosure may be more clearly understood from the following detailed description with reference to the accompanying drawings, in which:

[0021] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0022] Figure 2 It is a schematic diagram of the structure of the grinding component of the present invention;

[0023] Figure 3 is a cross-sectional view of a grinding component of the present invention;

[0024] Figure 4 A partial diagram of a grinding component of the present invention;

[0025] Figure 5 For the present invention Figure 4 A magnified view of the local structure at center A;

[0026] Figure 6 For the present invention Figure 4 View the diagram from the right.

[0027] In the figure: 1. base; 2. fixing member; 3. synchronous cylinder; 4. support plate; 401. extrusion spring; 402. guide shaft; 403. fixing ring; 5. power motor; 6. rotating shaft; 601. observation groove; 602. T-block; 603. reset spring; 604. cloth; 7. grinding member; 701. inspection groove; 702. slider; 703. extrusion rod; 704. ball; 705. inspection hole; 706. slide needle; 707. grinding groove; 708. grinding block; 709. elastic block; 710. connecting hole I; 711. normally closed solenoid valve; 712. solenoid block; 713. connecting hole II; 714. one-way valve; 715. connecting rod; 716. wedge block; 717. wedge groove; 718. support spring. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0029] Embodiment 1

[0030] See also Figure 1, a device for grinding the inner wall of a deep-hole precision component, comprising a base 1, a fixing member 2, a synchronous cylinder 3, a support plate 4, a power motor 5, a rotating shaft 6, a grinding member 7 and a control device (existing structure, not shown in the figure), two groups of fixing members 2 are fixedly installed on both sides of the top of the base 1, and the fixing member 2 is used to fix the precision components, and the top of the base 1 is fixedly connected with four synchronous cylinders 3 arranged in an array, and the synchronous cylinders 3 are arranged longitudinally, and the output ends of the four synchronous cylinders 3 are fixedly connected to the same support plate 4, and a power motor 5 is fixedly installed in the middle position of the top of the support plate 4, and the output end of the power motor 5 passes through the support plate 4, and the output end of the power motor 5 A rotating shaft 6 is fixedly connected to the top, and a grinding component 7 is fixedly connected to the bottom end of the rotating shaft 6. The output end of the power motor 5, the axis of the rotating shaft 6 and the grinding component 7 are on the same straight line. A plurality of extrusion springs 401 arranged in an array are fixedly connected to the bottom end of the support plate 4. A guide shaft 402 is movably sleeved in the extrusion spring 401. The top end of the guide shaft 402 passes through the support plate 4. The bottom ends of the plurality of guide shafts 402 are fixedly connected to the same fixed ring 403, and the top end of the fixed ring 403 is fixedly connected to the bottom end of the extrusion spring 401. The fixed ring 403 is movably sleeved on the outside of the grinding component 7, and the lowest point of the fixed ring 403 is lower than the position of the lowest point of the grinding component 7.

[0031] See also Figure 2 and Figure 3 , an inspection groove 701 is provided in an annular array inside the grinding component 7, a slider 702 is installed in the inspection groove 701 for sliding sealing, an extrusion rod 703 is fixedly connected to the middle position of the slider 702 on the side of the outer wall of the grinding component 7, the extrusion rod 703 penetrates and extends out of the side wall of the grinding component 7, a support spring 718 is fixedly connected to the side of the slider 702 facing the axis of the grinding component 7, the other end of the support spring 718 is fixedly connected to the inner wall of the inspection groove 701, and the inspection groove 701 and the side where the slider 702 is connected to the support spring 718 are filled with coolant; an inspection hole 705 that penetrates the grinding component 7 is provided at the innermost top of the inspection groove 701, a sliding needle 706 is installed in the inspection hole 705 for sliding sealing, and the sliding needle 706 An inspection hole 705 extends out from the top, and a limit ring is fixedly installed at the bottom end of the inspection hole 705. The limit ring limits the sliding needle 706 to prevent the bottom end of the sliding needle 706 from entering the inspection groove 701; an observation groove 601 is provided in an annular array on the side wall of the rotating shaft 6, and a T-block 602 is slidably installed in the observation groove 601, and one side of the T-block 602 extends out of the observation groove 601, and the bottom end of the T-block 602 extending out of the observation groove 601 is fixedly connected to the top of the sliding needle 706, and a return spring 603 is fixedly connected to the top of the observation groove 601, and the other end of the return spring 603 is fixedly connected to the top of the observation groove 601; a grinding groove 707 is provided in an annular array on the side wall of the grinding component 7, and a grinding block 708 for grinding is provided in the grinding groove 707.

[0032] See also Figure 3 One end of the extrusion rod 703 extending out of the inspection slot 701 is movably embedded with a ball 704. When one end of the extrusion rod 703 extending out of the inspection slot 701 contacts the inner wall of the deep hole of the precision component, the ball 704 is in rolling contact with the inner wall of the deep hole of the precision component, reducing the wear of the ball 704.

[0033] The distance between the top of the ball 704 and the axis of the grinding member 7 is greater than the distance between the outer wall of the grinding block 708 and the axis of the grinding member 7. When the grinding member 7 is inserted into the deep hole of the precision component, the ball 704 will first contact the inner wall of the deep hole of the precision component, so that the squeezing rod 703 and the slider 702 squeeze the coolant in the inspection groove 701.

[0034] See also Figure 3 Two sets of blocking cloths 604 are provided at the opening of the observation slot 601, and the two sets of blocking cloths 604 are respectively located at the upper and lower ends of the T-shaped block 602. The top end of the blocking cloth 604 at the upper end is fixedly connected to the top end of the observation slot 601, and the bottom end of the blocking cloth 604 at the lower end is fixedly connected to the bottom end of the observation slot 601. The side walls of the blocking cloth 604 are slidably connected to the side walls of the observation slot 601. When the T-shaped block 602 moves up and down in the observation slot 601, it drives the blocking cloth 604 to move, so that the blocking cloth 604 blocks the opening of the observation slot 601 to prevent grinding debris from entering the observation slot 601 during grinding.

[0035] The support spring 718 and the return spring 603 are always in a compressed state. The support spring 718 in the compressed state provides support force for the slider 702 and the extrusion rod 703, so that the slider 702 and the extrusion rod 703 can support the inner wall of the deep hole of the precision component; and the return spring 603 in the compressed state provides force for the T-block 602 and the slide needle 706 to return downward.

[0036] The working principle of the first embodiment of the present invention is as follows:

[0037] See also Figure 1 Before using the grinding device to grind the inner wall of the deep hole of the precision component, the precision component needs to be placed on the base 1, and the deep hole of the precision component is aligned with the grinding component 7. At this time, the precision component is fixed and clamped by the fixing component 2.

[0038] See also Figure 1-Figure 3, start the synchronous cylinder 3, so that the output end of the synchronous cylinder 3 drives the support plate 4, the power motor 5, the rotating shaft 6 and the grinding component 7 to move downward, so that the grinding component 7 enters the deep hole of the precision component. In the process of the grinding component 7 entering the deep hole of the precision component, the ball 704 of the grinding component 7 first contacts the side wall of the deep hole of the precision component, and the side wall of the deep hole squeezes the ball 704, the extrusion rod 703 and the slider 702, so that the ball 704, the extrusion rod 703 and the slider 702 move into the inspection groove 701. In this process, the slider 702 squeezes the coolant in the inspection groove 701, so that the coolant in the inspection groove 701 enters the inspection hole 705, thereby pushing the sliding needle 706 to move upward. In the process of the sliding needle 706 moving upward, the sliding needle 706 The top end drives the T-block 602 to move in the observation slot 601. By observing the height difference of several T-blocks 602 in the observation slot 601, the amount of coolant squeezed by the slider 702 in the inspection slot 701 can be judged. If the slider 702 squeezes the coolant in the inspection slot 701 in the same amount, the distance of the upward movement of the slide needle 706 is the same, and the height difference of the T-block 602 will be within the corresponding error range, indicating that the axis of the grinding component 7 and the axis of the deep hole of the precision component are in the same straight line; if the slider 702 squeezes the coolant in the inspection slot 701 in different amounts, the distance of the upward movement of the slide needle 706 is different, and the height difference of the T-block 602 will not be within the corresponding error range, indicating that the axis of the grinding component 7 and the axis of the deep hole of the precision component are not in the same straight line. By judging the position of the axis of the grinding component 7 and the axis of the deep hole of the precision component before grinding, the deep hole of the precision component is prevented from being ground when the axis is offset, thereby avoiding the situation where the precision of the deep hole of the precision component becomes low after grinding.

[0039] Embodiment 2

[0040] Embodiment 2 is a further improvement on embodiment 1.

[0041] The difference from the first embodiment is that, please refer to Figure 3 The grinding block 708 is installed in the grinding groove 707 in a sliding seal. The side of the grinding block 708 facing the axis of the grinding member 7 is fixedly connected with an elastic block 709. The other side of the elastic block 709 is fixedly connected to the inner wall of the grinding groove 707. Please refer to Figure 3-Figure 5 A plurality of groups of connecting holes Ⅰ 710 and connecting holes Ⅱ 713 are provided in the polishing member 7. Each group of connecting holes Ⅰ 710 and connecting holes Ⅱ 713 is used to connect the inspection slot 701 and the polishing slot 707 on the same side of the inspection slot 701. A normally closed electromagnetic valve 711 is fixedly installed at the connection between the connecting hole Ⅰ 710 and the inspection slot 701. A one-way valve 714 is fixedly installed at the connection between the connecting hole Ⅱ 713 and the inspection slot 701. Please refer to Figure 3 and Figure 4An electromagnetic block 712 is fixedly installed at the lower middle position of the polishing component 7. The electromagnetic block 712 and the normally closed electromagnetic valve 711 are electrically connected to the control device through a power line provided at the center of the polishing component 7 and the rotating shaft 6.

[0042] The slider 702 is a permanent magnet block, and when the electromagnetic block 712 is energized, a magnetic force is generated to attract the slider 702. When the electromagnetic block 712 is energized, the magnetic force of the electromagnetic block 712 pulls the slider 702 to move, so that the slider 702 squeezes the coolant in the inspection tank 701.

[0043] The flow direction of the normally closed solenoid valve 711 is from the inspection groove 701 to the connecting hole I 710 ; the flow direction of the one-way valve 714 is from the connecting hole II 713 to the inspection groove 701 .

[0044] See also Figure 3 , Figure 4 and Figure 6 The side wall of the inspection hole 705 from which the sliding needle 706 extends is fixedly connected with a connecting rod 715, the connecting rod 715 is n-shaped, the bottom end of the connecting rod 715 passes through the grinding component 7 and extends into the grinding groove 707, the two ends of the inspection hole 705 are fixedly connected with wedge blocks 716, the side walls on both sides of the grinding block 708 are provided with wedge grooves 717, the distance between the top end of the wedge groove 717 and the axis of the grinding component 7 is smaller than the distance between the bottom end of the wedge groove 717 and the axis of the grinding component 7, and the inclined surface of the wedge block 716 is close to the inclined surface of the wedge groove 717.

[0045] The working principle of the second embodiment of the present invention is as follows:

[0046] See also Figure 1-Figure 6 After determining the positions of the axis of the grinding component 7 and the axis of the deep hole of the precision component, the normally closed solenoid valve 711 and the solenoid block 712 are energized through the control device. At this time, the energized solenoid block 712 generates a force to attract the slider 702, so that the slider 702 moves toward the axis of the grinding component 7. The moving slider 702 squeezes the coolant in the inspection groove 701, so that the coolant enters the grinding groove 707 through the normally closed solenoid valve 711 and the connecting hole I 710. The coolant entering the grinding groove 707 pushes the grinding block 708 to move toward the outside of the grinding groove 707, so that the grinding block 708 is close to the inner wall of the deep hole of the precision component, the wear of the grinding block 708 after long-term use is compensated, and the service life of the grinding block 708 is extended.

[0047] At the same time, under the action of the elastic force of the return spring 603, the T-block 602 drives the sliding needle 706, the connecting rod 715 and the wedge block 716 to move downward until the inclined surface of the downwardly moved wedge block 716 is close to the inclined surface of the wedge groove 717 on the grinding block 708. The wedge block 716 limits the position of the grinding block 708 to prevent the grinding block 708 from moving toward the inner wall of the deep hole of the precision component under the action of centrifugal force during the subsequent grinding process, thereby squeezing the inner wall, resulting in excessive grinding force at the inner wall, affecting the grinding accuracy of the inner wall of the precision component.

[0048] Moreover, after the grinding is completed, the normally closed solenoid valve 711 and the solenoid block 712 are powered off. Under the action of the elastic force of the support spring 718, the support spring 718 pushes the slider 702 to move outward, and a negative pressure is generated in the inspection groove 701. The negative pressure in the inspection groove 701 absorbs the coolant in the grinding groove 707 through the one-way valve 714 and the connecting hole II 713, and the coolant flows back to the inspection groove 701. During the continuous processing, each time the coolant in the inspection groove 701 and the grinding groove 707 circulates, so that the coolant in the grinding groove 707 cools the grinding block 708 and then enters the inspection groove 701 for autonomous cooling, thereby achieving the purpose of circulating cooling of the grinding block 708, preventing the grinding block 708 from being in a high temperature state for a long time, and affecting the grinding effect of the grinding block 708 on the inner wall of the deep hole of the precision component.

Claims

1. A device for grinding the inner wall of a deep hole precision component, comprising a base (1), a fixing member (2), a synchronous cylinder (3), a support plate (4), a power motor (5), a rotating shaft (6), a grinding member (7) and a control device, characterized in that: The grinding component (7) comprises: Inspection grooves (701) are arranged in a circular array in the polishing member (7); A slider (702) is installed in a sliding seal in the inspection groove (701); An extrusion rod (703) is fixedly connected to a side of the slider (702) facing the outer wall of the polishing component (7), and the extrusion rod (703) penetrates and extends out of the side wall of the polishing component (7); A support spring (718) is fixedly connected to a side of the slider (702) facing the axis of the grinding component (7), and a cooling liquid is filled in the inspection groove (701) on a side of the slider (702) connected to the support spring (718); An inspection hole (705) is provided at the innermost top of the inspection groove (701); A sliding needle (706) is slidingly and sealably mounted in the inspection hole (705) and has a top end extending out of the inspection hole (705); The rotating shaft (6) is provided with: Observation slots (601) are arranged in a circular array on the side wall of the rotating shaft (6); A T-shaped block (602) is slidably mounted in the observation slot (601), one side of which extends out of the observation slot (601) and is fixedly connected to the top end of the sliding needle (706); A return spring (603), one end of which is fixedly connected to the top of the T-block (602), and the other end of which is fixedly connected to the top of the observation slot (601); The side wall of the grinding component (7) is provided with a grinding groove (707) in an annular array, and a grinding block (708) is provided in the grinding groove (707); The grinding block (708) is installed in a sliding seal in the grinding groove (707), and the grinding component (7) is provided with: An elastic block (709), one side of which is fixedly connected to the side of the grinding block (708) facing the axis of the grinding component (7), and the other side of which is fixedly connected to the inner wall of the grinding groove (707); A plurality of groups of communication holes I (710) and communication holes II (713) are provided in the polishing member (7), each group of communication holes I (710) and communication holes II (713) being used to connect the inspection groove (701) and the polishing groove (707) on the same side of the inspection groove (701); A normally closed solenoid valve (711) is fixedly installed at the connection point between the connecting hole I (710) and the inspection groove (701); A one-way valve (714) is fixedly installed at the connection point between the connecting hole II (713) and the inspection groove (701); An electromagnetic block (712) is fixedly mounted at a lower middle position of the grinding component (7); The electromagnetic block (712) and the normally closed electromagnetic valve (711) are electrically connected to the control device; The flow direction of the normally closed electromagnetic valve (711) is from the inspection groove (701) to the connecting hole I (710); the flow direction of the one-way valve (714) is from the connecting hole II (713) to the inspection groove (701); The side wall of the inspection hole (705) through which the sliding needle (706) extends is fixedly connected to a connecting rod (715), the connecting rod (715) is n-shaped, the bottom end of the connecting rod (715) passes through the grinding component (7) and extends into the grinding groove (707), and the two ends of the inspection hole (705) are fixedly connected to wedge blocks (716); The side walls on both sides of the grinding block (708) are provided with wedge-shaped grooves (717), and the inclined surface of the wedge-shaped block (716) is closely attached to the inclined surface of the wedge-shaped groove (717).

2. The inner wall grinding device for deep hole precision parts according to claim 1 is characterized in that: One end of the squeezing rod (703) extending out of the inspection slot (701) is movably embedded with a ball (704).

3. The inner wall grinding device of a deep hole precision component according to claim 2 is characterized in that: The distance between the top end of the ball (704) and the axis of the grinding component (7) is greater than the distance between the outer wall of the grinding block (708) and the axis of the grinding component (7).

4. The inner wall grinding device for deep hole precision parts according to claim 1 is characterized in that: Two sets of blocking cloths (604) are provided at the opening of the observation slot (601), and the two sets of blocking cloths (604) are respectively located at the upper end and the lower end of the T-shaped block (602), the top end of the blocking cloth (604) at the upper end is fixedly connected to the top end of the observation slot (601), the bottom end of the blocking cloth (604) at the lower end is fixedly connected to the bottom end of the observation slot (601), and the side wall of the blocking cloth (604) is slidably connected to the side wall of the observation slot (601).

5. The inner wall grinding device for deep hole precision parts according to claim 1 is characterized in that: The support spring (718) and the return spring (603) are always in a compressed state.

6. The inner wall grinding device for deep hole precision parts according to claim 1 is characterized in that: The slider (702) is a permanent magnet block, and the electromagnetic block (712) generates a magnetic force that attracts the slider (702) when power is supplied.

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