Tool, device and method for processing blind holes on inner wall of shaft sleeve

Abstract

The present invention provides a tool, a processing device and a processing method for a blind hole in the inner wall of a sleeve, and belongs to the field of sleeve processing. The tool for processing a blind hole in the inner wall of a sleeve includes a force transmission member and a pressure head. The force transmission member has a pressure-bearing part and a pressure-applying part; the pressure head is provided on the pressure-applying part; the pressure-applying part is suitable for entering the sleeve so that the pressure head is aligned with the inner wall of the sleeve and the pressure-applying part is exposed outside the sleeve; the force transmission member transmits the force of the pressure-bearing part to the pressure head so that the pressure head presses a hole on the inner wall of the sleeve. The device for processing a blind hole in the inner wall of the sleeve includes the above-mentioned tool for processing a blind hole in the inner wall of the sleeve; a positioning seat for processing a blind hole in the inner wall of the sleeve has a seat body suitable for supporting a horizontal sleeve. The method for processing a blind hole in the inner wall of the sleeve includes: using a stamping process to press out a blind hole on the inner wall of the sleeve; and processing to obtain a finished sleeve. The stamping process is used instead of the drilling process to reduce the difficulty of processing the blind hole in the inner wall of the sleeve.

Description

Technical Field

[0001] The present invention belongs to the technical field of shaft sleeve processing, and more specifically, relates to a shaft sleeve inner wall blind hole processing tool, a processing device and a processing method. Background Art

[0002] The shaft sleeve is an important component in mechanical equipment. The existing shaft sleeve inner hole oil storage and lubrication methods generally use various forms of circulating oil tanks to store and distribute oil. However, the oil tank will destroy the bearing capacity of the inner wall of the shaft sleeve and reduce the service life of the shaft sleeve. In addition, the oil storage capacity is limited, the oil distribution is uneven, and frequent maintenance is required during use. In the process of realizing the invention, the inventor found that if a blind hole is machined on the inner wall of the shaft sleeve as an oil tank, the above defects of the circulating oil tank can be completely avoided, which is a revolutionary innovation in the oil storage and lubrication method of the shaft sleeve. However, there are many limitations to machining blind holes on the inner wall of the shaft sleeve. A drill needs to be inserted into the shaft sleeve to drill a blind hole on the inner wall of the shaft sleeve. Due to the limited internal space of the shaft sleeve, the requirements for the drill are high, and it is even impossible to process on a smaller shaft sleeve. Therefore, how to reduce the machining difficulty of the blind hole oil tank is a problem that needs to be solved urgently. Summary of the Invention

[0003] The purpose of the present invention is to provide a tool, a device and a method for machining a blind hole in the inner wall of a shaft sleeve, so as to solve the technical problem in the prior art that machining a blind hole oil groove is difficult.

[0004] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is to provide a tool for processing blind holes in the inner wall of a sleeve, comprising:

[0005] a force transmission member having a pressure-bearing portion and a pressure-applying portion; and

[0006] A pressure head, provided on the pressure-applying portion;

[0007] The pressure-applying portion is suitable for entering the sleeve so that the pressure head is aligned with the inner wall of the sleeve and the pressure-bearing portion is exposed outside the sleeve; the force transmission member transmits the force of the pressure-bearing portion to the pressure head so that the pressure head presses a hole on the inner wall of the sleeve.

[0008] As another embodiment of the present application, the pressure head is provided on the side of the pressure-applying part, and the pressure-bearing parts are respectively provided at both ends of the pressure-applying part.

[0009] As another embodiment of the present application, the pressure-bearing part is provided with a supporting surface and a pressure-bearing surface that matches the press, and the supporting surface and the pressure-bearing surface are respectively located on two opposite sides of the pressure-bearing part; the pressure-bearing surface is in opposite directions to the pressure head.

[0010] As another embodiment of the present application, a mounting hole is provided on the pressure-applying portion, and the tail end of the pressure head is inserted into the mounting hole and is tightened and fixed by a top screw on the side wall of the mounting hole.

[0011] The beneficial effect of the blind hole processing tool for the inner wall of the sleeve provided by the embodiment of the present invention is that: compared with the prior art, the blind hole processing tool for the inner wall of the sleeve provided by the embodiment of the present invention, the pressure-applying part of the force transmission member extends into the sleeve, so that the pressure head is aligned with the inner wall of the sleeve, and pressure is applied to the pressure-bearing part exposed outside the sleeve through a press or other pressurizing equipment. The force transmission member transmits the pressure to the pressure head, so that the pressure head presses a blind hole shape on the inner wall of the sleeve, thereby replacing the drilling process and reducing the difficulty of processing the blind hole on the inner wall of the sleeve.

[0012] Another technical solution adopted by the present invention is to provide a device for machining a blind hole in the inner wall of a sleeve, comprising:

[0013] The tool for machining blind holes in the inner wall of a sleeve as described in any one of the above items; and

[0014] The shaft sleeve inner wall blind hole processing positioning seat is arranged below the shaft sleeve inner wall blind hole processing tool and has a seat body suitable for supporting the horizontal shaft sleeve.

[0015] As another embodiment of the present application, the top of the seat body is provided with an arc-shaped groove extending in both ends;

[0016] The blind hole processing positioning seat on the inner wall of the sleeve also includes:

[0017] Indexing springs; and

[0018] The positioning piece is located at the open end of the arc-shaped groove and is connected to the seat body through the indexing elastic piece. It is suitable for being elastically clamped into the indexing groove of the shaft sleeve through the indexing elastic piece.

[0019] As another embodiment of the present application, the bushing inner wall blind hole processing positioning seat also includes two depth limiting members respectively located on the two end sides of the seat body, and the depth limiting members are suitable for being supported between the seat body and the bushing inner wall blind hole processing tool to limit the downward pressing distance of the bushing inner wall blind hole processing tool.

[0020] As another embodiment of the present application, the bushing inner wall blind hole processing positioning seat further includes two sub-guide members, the two sub-guide members are suitable for guiding the force transmission member of the bushing inner wall blind hole processing tool in a direction away from or close to the seat body, the two sub-guide members are respectively located at the two end sides of the seat body, and the two sub-guide members are respectively provided with a bracket and a clamping member;

[0021] The brackets on the two sub-guide members are suitable for supporting the pressure-bearing portion of the force transmission member and positioning the force transmission member in the radial direction of the shaft sleeve;

[0022] The clamping members on the two sub-guide members are respectively located at the two end sides of the seat body and clamp and position the two pressure-bearing parts of the force transmission member in the axial direction of the shaft sleeve.

[0023] As another embodiment of the present application, the sub-guide member includes:

[0024] a cylinder body, fixed to the base body; and

[0025] The top head has a lower end inserted into the cylinder body and slidably connected to the cylinder body, and an upper end provided with the bracket and the clamping member, and the clamping member is located on the side of the bracket away from the base body;

[0026] The clamping members on the two sub-guide members are arranged facing each other;

[0027] A reset elastic member supporting the plug is provided in the bottom of the cylinder.

[0028] The beneficial effect of the blind hole processing device for the inner wall of the sleeve provided by the embodiment of the present invention is that compared with the prior art, the blind hole processing device for the inner wall of the sleeve provided by the embodiment of the present invention adopts the blind hole processing tool for the inner wall of the sleeve described in any one of the above items, the sleeve is placed horizontally on the seat body of the blind hole processing positioning seat of the inner wall of the sleeve, the pressure-applying part of the force transmission member extends into the sleeve, so that the pressure head is aligned with the inner wall of the sleeve, and pressure is applied to the pressure-bearing part exposed outside the sleeve through a press or other pressurizing equipment. The force transmission member transmits the pressure to the pressure head, so that the pressure head presses a blind hole shape on the inner wall of the sleeve, thereby replacing the drilling process and reducing the difficulty of processing the blind hole on the inner wall of the sleeve.

[0029] Another technical solution adopted by the present invention is to provide a method for machining a blind hole in the inner wall of a sleeve, comprising:

[0030] A blind hole is pressed out on the inner wall of the sleeve using a stamping process;

[0031] The finished shaft sleeve is obtained by processing.

[0032] The beneficial effect of the blind hole processing method of the inner wall of the sleeve provided by the embodiment of the present invention is that: compared with the existing technology, the blind hole processing method of the inner wall of the sleeve provided by the embodiment of the present invention adopts a stamping process instead of a drilling process, does not require drilling equipment, and reduces the difficulty of processing the blind hole in the inner wall of the sleeve. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0034] Figure 1 A front view of a positioning seat for processing a blind hole in the inner wall of a sleeve provided by an embodiment of the present invention;

[0035] Figure 2 for Figure 1 Bottom view of the tool for machining the blind hole on the inner wall of the center sleeve;

[0036] Figure 3 A front view of a positioning seat for processing a blind hole in the inner wall of a sleeve provided by an embodiment of the present invention;

[0037] Figure 4 for Figure 3 A top view of the blind hole machining locating seat on the inner wall of the middle shaft sleeve;

[0038] Figure 5 for Figure 3 Blind hole processing positioning seat on the inner wall of the middle shaft sleeve Figure 1 Cross-sectional view of the combination of tools for machining blind holes on the inner wall of the center sleeve;

[0039] Figure 6 for Figure 5 A sectional view of the center guide member as viewed from the side;

[0040] Figure 7 for Figure 5 Side view of the center seat.

[0041] Among them, the reference numerals in the figures are:

[0042] 1-force transmission member; 11-pressure-bearing part; 111-pressure-bearing surface; 112-support surface; 12-pressure-applying part; 121-mounting hole; 122-top screw; 13-positioning section; 2-pressing head; 3-seat body; 31-arc-shaped groove; 32-arc-shaped baffle; 33-avoidance gap; 4-dividing guide member; 41-bracket; 42-telescopic member; 421-fixing part; 422-top part; 43-cylinder; 431-external spiral oil groove; 44-top head; 45-resetting elastic member; 5-depth limiting member; 6-sleeve; 61-indexing groove; 71-indexing elastic member; 72-positioning member. DETAILED DESCRIPTION

[0043] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0044] Please also refer to Figures 1 to 7 The following describes a tool for machining a blind hole in the inner wall of a shaft sleeve provided by an embodiment of the present invention. A tool for machining a blind hole in the inner wall of a shaft sleeve comprises:

[0045] The force transmission member 1 has a pressure-bearing portion 11 and a pressure-applying portion 12; and

[0046] The pressure head 2 is provided on the pressure portion 12;

[0047] The pressure-applying portion 12 is adapted to enter the sleeve 6 so that the pressure head 2 is aligned with the inner wall of the sleeve 6 and the pressure-bearing portion 11 is exposed outside the sleeve 6; the force transmission member 1 transmits the force of the pressure-bearing portion 11 to the pressure head 2 so that the pressure head 2 presses a hole on the inner wall of the sleeve 6.

[0048] Compared with the prior art, in the blind hole processing tool for the inner wall of the sleeve of the embodiment of the present invention, the pressure-applying portion 12 of the force transmission member 1 extends into the sleeve 6, so that the pressure head 2 is aligned with the inner wall of the sleeve 6, and pressure is applied to the pressure-bearing portion 11 exposed outside the sleeve 6 through a press or other pressurizing equipment. The force transmission member 1 transmits the pressure to the pressure head 2, so that the pressure head 2 presses a blind hole shape on the inner wall of the sleeve 6, thereby replacing the drilling process and reducing the difficulty of processing the blind hole on the inner wall of the sleeve.

[0049] In a specific implementation, the force transmission member 1 can be made of a hard material so that it can withstand a certain pressure and transmit the pressure to the pressure head 2. The size of the pressure portion 12 of the force transmission member 1 is based on being able to extend into the shaft sleeve 6, so that the pressure head 2 on the pressure portion 12 can be aligned with the inner wall of the shaft sleeve 6. The pressure-bearing portion 11 can be set at one end of the pressure portion 12. When the pressure portion 12 extends into the shaft sleeve 6, the pressure-bearing portion 11 is exposed outside the shaft sleeve 6. One or more pressure heads 2 can be set on the pressure portion 12 of the force transmission member 1. The pressure head 2 protrudes from the surface of the pressure portion 12, so that a blind hole can be pressed out on the inner wall of the shaft sleeve 6 to form an oil groove.

[0050] Of course, using the blind hole processing tool on the inner wall of the sleeve 6 of this embodiment to press out a blind hole will cause the sleeve 6 to deform to a certain extent. Therefore, after the blind hole is pressed out on the inner wall of the sleeve 6, the sleeve 6 can be further processed to ensure that the size of the sleeve 6 meets the requirements.

[0051] See also Figure 1 、 Figure 2 and Figure 5 As a specific embodiment of the blind hole processing tool for the inner wall of the sleeve provided by the present invention, a pressure head 2 is provided on the side of the pressure-applying part 12, and pressure-bearing parts 11 are respectively provided at both ends of the pressure-applying part 12.

[0052] In this embodiment, the force transmission member 1 can pass through the sleeve 6. The pressure-applying portion 12 in the middle section is located inside the sleeve 6, while the pressure-bearing portions 11 at both ends are exposed outside the sleeve 6. The pressure heads 2 on the side of the pressure-applying portion 12 face the inner wall of the sleeve 6. A press is used to apply pressure to the two pressure-applying portions 12, so that the pressure heads 2 on the side of the pressure-applying portions 12 press out blind holes in the inner wall of the sleeve 6, forming an oil groove. The pressure-bearing portions 11 at both ends are subjected to force, making the pressure on the pressure-applying portion 12 in the middle section more balanced.

[0053] In a specific implementation, the force transmission member 1 can be a round rod, and the middle section is the pressure-applying part 12, and the parts at both ends of the pressure-applying part 12 are respectively the pressure-bearing parts 11, and one or more pressure heads 2 are protruding from the lower side of the middle section.

[0054] See also Figure 1 、 Figure 2 and Figure 5 As a specific embodiment of the blind hole processing tool for the inner wall of the sleeve provided by the present invention, the pressure-bearing part 11 is provided with a supporting surface 112 and a pressure-bearing surface 111 that matches the press, and the supporting surface 112 and the pressure-bearing surface 111 are respectively located on two opposite sides of the pressure-bearing part 11; the pressure-bearing surface 111 is in the opposite direction to the pressure head 2.

[0055] In this embodiment, the pressure-bearing surface 111 can withstand the pressure in the same direction as the pressure head 2, thereby better providing pressure to the pressure head 2. Moreover, the press machine presses against the pressure-bearing surface 111 of the pressure-bearing part 11, and can also control the direction of the pressure head 2 to prevent the pressure head 2 from tilting.

[0056] By supporting the support surface 112 through the depth limiter 5 or other structure on the positioning seat, the pressing depth of the force transmission member 1 can be controlled, thereby controlling the depth of the blind hole pressed by the pressure head 2 on the inner wall of the sleeve 6. The pressure-bearing surface 111 and the support surface 112 of the pressure-bearing part 11 are opposite each other. The pressure-bearing surface 111 of the pressure-bearing part 11 is compressed and the support surface 112 is supported, which can prevent excessive deformation of the pressure-bearing part 11 when it is subjected to force.

[0057] In practice, the force transmission member 1 can be a round rod, with a middle section serving as a pressure-applying portion 12 and two ends serving as pressure-bearing portions 11. Each pressure-bearing portion 11 has two opposing planes machined onto the sides, forming a pressure-bearing surface 111 and a support surface 112. The pressure head 2 is positioned on the pressure-applying portion 12, on the same side as the support surface 112.

[0058] See also Figure 1 and Figure 2 As a specific embodiment of the blind hole processing tool for the inner wall of the sleeve provided by the present invention, a mounting hole 121 is provided on the pressure-applying part 12, and the tail end of the pressure head 2 is inserted into the mounting hole 121 and is tightened and fixed by the top screw 122 on the side wall of the mounting hole 121.

[0059] In this embodiment, the pressure head 2 is detachably provided on the pressure-applying portion 12 , and a suitable pressure head 2 can be selected and replaced according to the required blind hole size and shape; it is also convenient to replace a damaged pressure head 2 .

[0060] In practice, the pressure portion 12 is provided with a row of mounting holes 121, each of which is threaded through the side of the mounting hole 121. The ram 2 is cylindrical, with its tail end inserted into the mounting hole 121. The ram 2 is secured in the mounting hole 121 by installing a set screw 122 in a threaded hole on the side wall of the mounting hole 121.

[0061] In other examples, the force transmission member 1 further includes positioning segments 13 located at both ends of the pressure-applying portion 12, and the positioning segments 13 are adapted to be snapped into the brackets 41 of the blind hole processing positioning seat on the inner wall of the sleeve to position the force transmission member 1 in the radial direction of the sleeve 6. In this embodiment, the positioning segments 13 can be snapped into the brackets 41 of the two sub-guide members 4 on the blind hole processing positioning seat on the inner wall of the sleeve to limit the radial position of the force transmission member 1 on the sleeve 6. In a specific implementation, the left and right ends of the force transmission member 1 are positioning segments 13, and the positioning segments 13 at both ends of the force transmission member 1 are snapped into the two brackets 41. The shape of the positioning segments 13 matches the shape of the brackets 41, and the side walls of the brackets 41 limit the radial position of the force transmission member 1 on the sleeve 6. The clamping members on the side of the brackets 41 press against the two end faces of the force transmission member 1 to clamp the force transmission member 1, thereby achieving the fixation of the blind hole processing tool on the inner wall of the sleeve.

[0062] In other examples, the head end of the ram 2 includes an annular conical surface and a conical surface provided on the small end of the annular conical surface, and the cone angle of the annular conical surface is smaller than the cone angle of the conical surface. In this embodiment, the annular conical surface of the ram 2 forms the side wall of the blind hole, so that the side wall of the machined blind hole is slightly inclined, which is convenient for bringing out the lubricating oil in the blind hole when the rotating shaft in the sleeve 6 rotates; and a conical surface with a larger cone angle is provided on the small end of the annular conical surface to facilitate stamping, while reducing the height of the ram 2 and the depth of the blind hole. In a specific implementation, the tail end of the ram 2 is cylindrical, and a conical surface is machined at the top of the head end of the ram 2, and then a circle of annular conical surface is machined between the conical surface and the outer surface of the tail end of the ram 2 as a transition.

[0063] In other examples, the conical surface has a conical angle ranging from 145° to 155°, and the annular conical surface has a conical angle ranging from 55° to 65°. In this embodiment, the annular conical surface has a conical angle ranging from 55° to 65°, and the sidewalls of the processed blind hole are tilted at a corresponding angle, which facilitates the shaft to remove lubricating oil from the blind hole. The conical surface has a conical angle ranging from 145° to 155°, which can reduce the height of the head of the press head 2 and the depth of the blind hole while maintaining high punching efficiency.

[0064] See also Figures 1 to 7 The embodiment of the present invention further provides a device for machining a blind hole in the inner wall of a sleeve, the device comprising:

[0065] Any of the above tools for machining blind holes in the inner wall of a sleeve; and

[0066] The shaft sleeve inner wall blind hole processing positioning seat is arranged below the shaft sleeve inner wall blind hole processing tool, and has a seat body 3 suitable for supporting the horizontal shaft sleeve 6.

[0067] Compared with the prior art, the blind hole processing device for the inner wall of the sleeve of the embodiment of the present invention adopts any of the above-mentioned blind hole processing tools for the inner wall of the sleeve, and the sleeve 6 is placed horizontally on the seat body 3 of the blind hole processing positioning seat of the inner wall of the sleeve. The pressure-applying part 12 of the force transmission member 1 extends into the sleeve 6, so that the pressure head 2 is aligned with the inner wall of the sleeve 6, and pressure is applied to the pressure-bearing part 11 exposed outside the sleeve 6 through a press or other pressurizing equipment. The force transmission member 1 transmits the pressure to the pressure head 2, so that the pressure head 2 presses a blind hole shape on the inner wall of the sleeve 6, thereby replacing the drilling process and reducing the difficulty of blind hole processing on the inner wall of the sleeve.

[0068] See also Figures 3 to 5 and Figure 7 As a specific embodiment of the blind hole processing device for the inner wall of the sleeve provided by the present invention, the top of the seat body 3 is provided with an arc-shaped groove 31 extending in the direction of both ends;

[0069] The blind hole processing locating seat on the inner wall of the sleeve also includes:

[0070] Indexing elastic member 71; and

[0071] The positioning member 72 is located at the open end of the arc-shaped groove 31 and is connected to the base body 3 through the indexing elastic member 71 . The positioning member 72 is adapted to be elastically snapped into the indexing groove 61 of the shaft sleeve 6 through the indexing elastic member 71 .

[0072] In this embodiment, the positioning member 72 is snapped into the indexing groove 61 on the end surface of the shaft sleeve 6, so as to more accurately position the shaft sleeve 6 in the circumferential direction.

[0073] In practice, multiple circumferentially distributed indexing grooves 61 can be pre-machined on the end surface of the sleeve 6 based on the circumferential position of the blind hole. After the sleeve 6 is placed horizontally in the arcuate groove 31, the elastic force of the indexing elastic member 71 engages the positioning member 72 in the indexing groove 61, ensuring that the sleeve 6 is rotated to the predetermined angle, thereby accurately machining the blind hole on the inner wall of the sleeve 6. The indexing grooves 61 on the end surface of the sleeve 6 can be removed after machining is completed.

[0074] In a specific implementation, the positioning member 72 is secured to the base 3 via the indexing elastic member 71, positioned at the open end of the arcuate groove 31. When the sleeve 6 is positioned horizontally within the arcuate groove 31, the positioning member 72 faces the end face of the sleeve 6. The indexing elastic member 71 can be a spring, or other elastic structure, providing a force to press the positioning member 72 against the end face of the sleeve 6. The positioning member 72 is pointed and faces the arcuate groove 31, adapted to engage with the indexing groove 61 on the end face of the sleeve 6.

[0075] For example, one end of the base body 3 is provided with an indexing elastic member 71 and a positioning member 72, and the other end is provided with an arcuate retaining bar 32. The arcuate retaining bar 32 is arranged along the edge of one end of the arcuate groove 31, and the area surrounded by the arcuate retaining bar 32 forms an escape notch 33. The limit stop can limit the axial position of the sleeve 6 in the arcuate groove 31. The provision of the escape notch 33 prevents the limit stop from interfering with the tool for machining the blind hole in the sleeve inner wall, thereby preventing it from affecting the operation of the tool.

[0076] See also Figures 3 to 5 As a specific embodiment of the blind hole processing device for the inner wall of the sleeve provided by the present invention, the blind hole processing positioning seat for the inner wall of the sleeve also includes two depth limiting members 5 respectively located at the two end sides of the seat body 3. The depth limiting members 5 are suitable for being supported between the seat body 3 and the blind hole processing tool for the inner wall of the sleeve to limit the downward pressing distance of the blind hole processing tool for the inner wall of the sleeve.

[0077] In this embodiment, the depth limiting member 5 limits the downward pressing distance of the blind hole machining tool on the inner wall of the sleeve, thereby controlling the depth of the blind hole pressed on the inner wall of the sleeve 6 .

[0078] In a specific implementation, the force transmission member 1 of the tool for machining blind holes in the inner wall of a sleeve can be a round rod, with a central pressure-applying portion 12, and pressure-bearing portions 11 and positioning segments 13 at each end. The positioning segments 13 are provided with support surfaces 112 on their undersides. The depth limiter 5 can be a support seat fixed to the same base plate as the seat body 3. Two depth limiters 5 are located below the positioning segments 13 at each end of the force transmission member 1, supporting the positioning segments 13 via the support surfaces 112.

[0079] See also Figures 3 to 6 As a specific embodiment of the blind hole machining device for the inner wall of the sleeve provided by the present invention, the positioning seat for machining the blind hole in the inner wall of the sleeve further includes two sub-guide members 4, which are suitable for guiding the force transmission member 1 of the blind hole machining tool for the inner wall of the sleeve in a direction away from or close to the seat body 3. The two sub-guide members 4 are respectively located at the two end sides of the seat body 3, and the two sub-guide members 4 are respectively provided with a bracket 41 and a clamping member;

[0080] The brackets 41 on the two sub-guides 4 are suitable for supporting the pressure-bearing portion 11 of the force transmission member 1 and positioning the force transmission member 1 in the radial direction of the shaft sleeve 6;

[0081] The clamping members on the two sub-guide members 4 are respectively located at the two end sides of the seat body 3 and clamp and position the two pressure-bearing parts 11 of the force transmission member 1 in the axial direction of the shaft sleeve 6 .

[0082] In this embodiment, two sub-guide members 4 are used at both ends of the seat body 3 , which can more conveniently provide two brackets 41 and two clamping members.

[0083] In a specific implementation, the two sub-guides 4 and the base 3 are fixed to the same base plate, and the two sub-guides 4 are located at both ends of the base 3. When the sleeve 6 is placed horizontally on the base 3, the two sub-guides 4 are located at both ends of the sleeve 6. After the blind hole machining tool for the sleeve inner wall passes through the sleeve 6, its ends are respectively inserted into the brackets 41 of the two sub-guides 4. Then, the clamping members on the two sub-guides 4 clamp the ends of the blind hole machining tool for the sleeve inner wall, thereby securing the tool for the blind hole machining tool for the sleeve inner wall.

[0084] For example, two brackets 41 support the force transmission member 1 of the tool for machining blind holes in the inner wall of the sleeve. The shapes of the brackets 41 of the two sub-guides 4 match the outer shapes of the positioning sections 13 at both ends of the cylindrical force transmission member 1. During use, the positioning sections 13 at both ends of the cylindrical force transmission member 1 respectively snap into the two brackets 41. Two clamping members clamp the ends of the force transmission member 1 of the tool for machining blind holes in the inner wall of the sleeve. The clamping members on the two sub-guides 4 are respectively aligned with the end surfaces of the force transmission member 1, thereby clamping the force transmission member 1 axially.

[0085] For example, the two clamping members are each a telescopic member 42 with adjustable length and fixed thereto, and the two telescopic members 42 are arranged axially opposite to each other on the sleeve 6. The two telescopic members 42 extend toward each other to clamp the blind hole machining tool on the inner wall of the sleeve in the middle. After clamping, the length of the two telescopic members 42 can be adjusted to adjust the axial position of the blind hole machining tool on the inner wall of the sleeve 6, thereby adjusting the axial position of the blind hole on the sleeve 6.

[0086] In a specific implementation, the length of the telescopic part 42 can be extended and retracted, and the length of the telescopic part 42 can be fixed after being extended and retracted to a suitable position. Specifically, the telescopic part 42 can adopt a telescopic sleeve structure that can be locked; the telescopic part 42 can also adopt a fixed part 421 and a top-butting part 422. The fixed part 421 is provided on the movable end of the guide assembly. The top-butting part 422 is threadedly connected to the fixed part 421 and faces the other telescopic part 42, and is suitable for abutting the blind hole processing tool on the inner wall of the sleeve. In this embodiment, the extension and retraction of the top-butting part 422 can be achieved by rotating the top-butting part 422. The fixed part 421 adopts a plate fixed on the movable end, and a horizontally through-threaded hole is provided on the fixed part 421; the top and bottom parts adopt screws or screws, which are horizontally installed in the threaded hole of the fixed part 421. Both telescopic parts 42 adopt a matching fixed part 421 and a top-butting part 422, and the top-butting parts 422 of the two telescopic parts 42 are arranged horizontally facing each other.

[0087] See also Figures 3 to 6 As a specific embodiment of the blind hole processing device for the inner wall of the sleeve provided by the present invention, the sub-guide member 4 includes:

[0088] The cylinder 43 is fixed to the base 3; and

[0089] The lower end of the plug 44 is inserted into the cylinder 43 and is slidably connected to the cylinder 43. The upper end is provided with a bracket 41 and a clamping member. The clamping member is located on the side of the bracket 41 away from the base 3.

[0090] The clamping members on the two sub-guide members 4 are arranged facing each other;

[0091] A reset elastic member 45 supporting the plug 44 is provided at the bottom of the cylinder 43 .

[0092] In this embodiment, after the blind hole processing tool on the inner wall of the sleeve is pressed down, it pushes the head 44 to compress the reset elastic part 45. When the blind hole processing tool on the inner wall of the sleeve completes the hole pressing, the elastic force of the reset elastic part 45 pushes the head 44 up, thereby resetting the blind hole processing tool on the inner wall of the sleeve.

[0093] In a specific implementation, the cylinder 43 and the base 3 are fixed on the same base plate. The cylinder 43 is a cylinder and is vertically arranged on the base plate, and the upper end of the cylinder 43 is open. The lower end of the plug 44 is cylindrical and inserted into the cylinder 43, so that the plug 44 can slide up and down. The top surface of the upper end of the plug 44 is provided with a bracket 41 extending axially along the sleeve 6. The clamping member is installed on the side of the upper end of the plug 44 away from the base 3. When the two positioning sections 13 of the force transmission member 1 are respectively inserted into the bracket 41, the clamping members on the sides of the two brackets 41 can be aligned with the end faces of the two positioning sections 13, thereby clamping the force transmission member 1. The reset elastic member 45 can be a rubber block installed in the bottom of the cylinder 43.

[0094] Illustratively, an inner spiral oil groove is provided on the inner wall of the cylinder 43, and the inner spiral oil groove extends from the bottom of the cylinder 43 to the top opening so that the bottom space of the cylinder 43 is connected to the outside; or an outer spiral oil groove 431 is provided on the outer wall of the lower end of the plug 44, and the outer spiral oil groove 431 extends from the exposed part of the lower end of the plug 44 to the inserted part and is connected with the bottom space inside the cylinder 43, so that the bottom space of the cylinder 43 is connected to the outside.

[0095] In this embodiment, the inner or outer spiral oil groove 431 stores lubricating oil to lubricate the lower end of the mandrel 44. Furthermore, the bottom space within the barrel 43 is connected to the outside world through the inner or outer oil groove. This ensures that the air pressure within the bottom space of the barrel 43 balances with the outside air pressure during the raising and lowering of the mandrel 44, allowing for smoother raising and lowering of the mandrel 44. In a specific implementation, the inner spiral oil groove is in the shape of a spiral that rotates along the inner wall of the barrel 43. The outer spiral oil groove 431 is in the shape of a spiral that surrounds the lower end of the mandrel 44.

[0096] An embodiment of the present invention further provides a method for machining a blind hole in an inner wall of a sleeve, comprising:

[0097] A blind hole is pressed out on the inner wall of the sleeve 6 by using a stamping process;

[0098] The finished shaft sleeve is obtained by processing.

[0099] Compared with the prior art, the method for machining blind holes on the inner wall of a sleeve in an embodiment of the present invention adopts a stamping process instead of a drilling process, does not require drilling equipment, and reduces the difficulty of machining blind holes on the inner wall of the sleeve.

[0100] In this embodiment, the shaft sleeve 6 may be unprocessed or only undergo simple rough processing. A blind hole is then stamped into the inner wall of the shaft sleeve 6 using a stamping process. The blind hole can be stamped into the inner wall of the shaft sleeve 6 using any stamping equipment. Specifically, the aforementioned shaft sleeve inner wall blind hole machining tool or shaft sleeve inner wall blind hole machining device can be used. The shaft sleeve 6 is then further fine-machined to obtain the finished shaft sleeve.

[0101] In specific implementation, not only can the oil groove in the form of a blind hole be processed on the sleeve 6 using this method, but other types of oil grooves can also be processed by other means. The processing of other oil grooves can be before or after the blind hole is pressed out on the inner wall of the sleeve 6 using a stamping process.

[0102] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A tool for processing blind holes on the inner wall of a bushing, characterized in that: include: A force transmission member having a pressure-bearing portion and a pressure-applying portion; as well as A pressure head, provided on the pressure-applying portion; The pressure-applying portion is adapted to enter the shaft sleeve so that the pressure head is aligned with the inner wall of the shaft sleeve and the pressure-bearing portion is exposed outside the shaft sleeve; The force transmission member transmits the force of the pressure-bearing part to the pressure head, so that the pressure head presses a hole on the inner wall of the sleeve; The pressure-bearing part is provided with a supporting surface for controlling the pressing depth of the force transmission member and a pressure-bearing surface that matches the press. The supporting surface and the pressure-bearing surface are respectively located on both sides of the pressure-bearing part, and the pressure-bearing surface is in opposite directions to the pressure head.

2. The tool for processing a blind hole in the inner wall of a sleeve according to claim 1, characterized in that: The pressure head is arranged on the side surface of the pressure-applying part, and the pressure-bearing parts are respectively arranged at both ends of the pressure-applying part.

3. The tool for machining blind holes in the inner wall of a sleeve according to claim 1, wherein: The supporting surface is arranged opposite to the pressure-bearing surface.

4. The tool for machining blind holes on the inner wall of a sleeve according to claim 1, wherein: The pressure-applying portion is provided with a mounting hole, and the tail end of the pressure head is inserted into the mounting hole and is tightly fixed by a top screw on a side wall of the mounting hole.

5. The blind hole processing device of the inner wall of the sleeve is characterized by: include: A tool for machining blind holes in the inner wall of a sleeve according to any one of claims 1 to 4; as well as The shaft sleeve inner wall blind hole processing positioning seat is arranged below the shaft sleeve inner wall blind hole processing tool and has a seat body suitable for supporting the horizontal shaft sleeve.

6. The device for machining blind holes on the inner wall of a sleeve according to claim 5, characterized in that: The top of the seat body is provided with an arc-shaped groove extending in directions of both ends; The blind hole processing positioning seat on the inner wall of the sleeve also includes: Indexing springs; and The positioning piece is located at the open end of the arc-shaped groove and is connected to the seat body through the indexing elastic piece. It is suitable for being elastically clamped into the indexing groove of the shaft sleeve through the indexing elastic piece.

7. The device for machining blind holes on the inner wall of a sleeve according to claim 5, characterized in that: The bushing inner wall blind hole processing positioning seat also includes two depth limiting parts located at both ends of the seat body, and the depth limiting parts are suitable for being supported between the seat body and the bushing inner wall blind hole processing tool to limit the downward pressing distance of the bushing inner wall blind hole processing tool.

8. The device for machining blind holes on the inner wall of a sleeve according to claim 5, characterized in that: The bushing inner wall blind hole processing positioning seat further comprises two sub-guide members, the two sub-guide members being adapted to guide the force transmission member of the bushing inner wall blind hole processing tool in a direction away from or close to the seat body, the two sub-guide members being respectively located at both end sides of the seat body, and the two sub-guide members being respectively provided with a bracket and a clamping member; The brackets on the two sub-guide members are suitable for supporting the pressure-bearing portion of the force transmission member and positioning the force transmission member in the radial direction of the shaft sleeve; The clamping members on the two sub-guide members are respectively located at the two end sides of the seat body and clamp and position the two pressure-bearing parts of the force transmission member in the axial direction of the shaft sleeve.

9. The device for machining blind holes on the inner wall of a sleeve according to claim 8, characterized in that: The sub-guide member includes: a cylinder body, fixed to the base body; and The top head has a lower end inserted into the cylinder body and slidably connected to the cylinder body, and an upper end provided with the bracket and the clamping member, and the clamping member is located on the side of the bracket away from the base body; The clamping members on the two sub-guide members are arranged facing each other; A reset elastic member supporting the plug is provided in the bottom of the cylinder.

10. A method for machining a blind hole in the inner wall of a sleeve, characterized in that: include: A blind hole is pressed out on the inner wall of the sleeve by a stamping process; the stamping process adopts the sleeve inner wall blind hole processing tool according to any one of claims 1 to 4 or the sleeve inner wall blind hole processing device according to any one of claims 5 to 9; The finished shaft sleeve is obtained by processing.

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