CN218487832U

CN218487832U - Outer diameter coaxiality machining tool

Info

Publication number: CN218487832U
Application number: CN202222931846.XU
Authority: CN
Inventors: 何正伟; 张中俊; 徐跃德
Original assignee: Chengdu Tianchen Compressor Manufacturing Co ltd
Current assignee: Chengdu Tianchen Compressor Manufacturing Co ltd
Priority date: 2022-11-03
Filing date: 2022-11-03
Publication date: 2023-02-17
Anticipated expiration: 2032-11-03

Abstract

The utility model discloses an external diameter axiality processing frock, including the core axis body and the cover that expands, the core axis body divides the three-section, and both ends are for rotating the linkage segment, and the middle part is the cover installation section that expands, the cover installation section that expands is located treats processing workpiece, the cover that expands is installed in the cover installation section that expands, and is located the cover installation section that expands and treats processing workpiece between, it has the cover positioning seat that expands to process on the cover installation section that expands. Compared with the prior art, the utility model discloses a guarantee the interior external diameter of cylinder liner and add the axiality requirement man-hour, designed the dabber processing technology equipment of bloated shell type, design benefit, use reliably, loading and unloading are convenient, the cost is low, the partial standardized production that can also of bloated cover to can guarantee the product design requirement completely, whole product reasonable in design, simple structure are reliable, low in manufacturing cost, product part machining precision easily guarantee.

Description

Outer diameter coaxiality machining tool

Technical Field

The utility model relates to a processing is with the tooling field, especially relates to an external diameter axiality processing frock.

Background

In order to ensure the product quality and prolong the service life of equipment, more domestic compressor enterprises adopt a design scheme of embedding a cylinder sleeve for a compressor cylinder, and when the cylinder sleeve of the compressor cylinder operated by a user is worn too much, the product performance and the yield are influenced, the product motion precision is reduced, the safety and the reliability are reduced, and an old cylinder sleeve needs to be replaced; after the new cylinder sleeve is embedded into the cylinder, the precision of the cylinder is required to be kept unchanged, and the coaxial precision of the inner diameter and the outer diameter of the cylinder sleeve must be ensured. The current technological procedure for finish machining of the new cylinder sleeve comprises the steps of honing the inner diameter of the cylinder sleeve, then finish machining the outer diameter, and when the outer diameter is machined, the coaxiality of the outer diameter and the inner diameter is required to be guaranteed.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an external diameter axiality processing frock to solve the processing difficult problem of cylinder liner external diameter, ensure that the axiality of external diameter and internal diameter is unanimous.

In order to realize the purpose, the utility model discloses a technical scheme is: the utility model provides an external diameter axiality processing frock, includes the core axis body and expands the cover, the core axis body divides the three-section, and both ends are for rotating the linkage segment, and the middle part is the cover installation section that expands, the cover installation section that expands is located and treats the processing work piece, the cover that expands is installed on the cover installation section that expands, and is located the cover installation section that expands and treats between the processing work piece, it has the cover positioning seat that expands to process on the cover installation section that expands.

Preferably, the two ends of the expansion sleeve mounting section are respectively provided with an expansion sleeve and an expansion sleeve positioning seat which are distributed in bilateral symmetry.

Preferably, the expansion sleeve is a taper ring expansion sleeve, the taper ring expansion sleeve mainly comprises an inner positioning taper sleeve, an outer positioning taper sleeve, an expansion taper ring A, an expansion taper ring B and an expansion screw, a double-taper-ring cavity is reserved between the inner positioning taper sleeve and the outer positioning taper sleeve, the expansion taper ring A and the expansion taper ring B are symmetrically arranged in the double-taper-ring cavity, and the expansion screw penetrates through the expansion taper ring A and is in threaded fastening connection with the expansion taper ring B.

Preferably, the inner positioning taper sleeve is sleeved on the expansion sleeve mounting section.

Preferably, the outer diameter of the inner positioning taper sleeve is provided with a circle of annular boss, the outer positioning taper sleeve is composed of a left taper sleeve and a right taper sleeve, and the left taper sleeve and the right taper sleeve are located on the left side and the right side of the boss.

Preferably, the expansion screws are distributed at intervals along the circumferential direction of the expansion conical ring A, through holes matched with the expansion screws are formed in the expansion conical ring A and the boss, and internal thread holes matched with the expansion screws are formed in the expansion conical ring B.

Preferably, the expansion taper ring A is provided with an internal thread through hole A matched with the loosening screw A, and the expansion taper ring A and the boss are provided with a through hole B convenient for the loosening screw B to pass through.

Preferably, the core shaft body is divided into an integral core shaft body and a welded core shaft body, the core shaft body of the integral core shaft body is of a solid structure, and the welded core shaft body is of a hollow structure.

Compared with the prior art, the utility model has the advantages of: the utility model discloses a guarantee the axiality requirement in the interior external diameter of cylinder liner man-hour, designed the dabber processing technology equipment of the shell type that expands, design benefit, use reliable, loading and unloading are convenient, the cost is low, the cover part that expands can also the standardized production to can protect product design requirement completely. The whole product has reasonable design, simple and reliable structure, low manufacturing cost and easy guarantee of the processing precision of parts of the product.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic end face structure diagram of the expansion conical ring a of the present invention;

FIG. 3 is a schematic view of the end face structure of the inner positioning taper sleeve of the present invention;

FIG. 4 is a schematic sectional view of the inner positioning taper sleeve of the present invention;

fig. 5 is a schematic end face structure view of the expansion cone ring B of the present invention;

fig. 6 is a schematic view of an assembly structure of each screw of the present invention.

In the figure: 1-a mandrel body, 11-a rotating connecting section, 12-an expanding sleeve mounting section, 13-an expanding sleeve positioning seat, 2-an inner positioning taper sleeve, 21-a boss, 3-an outer positioning taper sleeve, 31-a left taper sleeve, 32-a right taper sleeve, 4-an expanding taper ring A, 5-an expanding taper ring B, 6-an expanding screw, 61-a through hole, 7-an inner thread through hole A, and 71-a releasing screw A; 8-through hole B, 81-loosening screw B, 9-contracting and expanding tight seam, and 10-workpiece to be processed.

Detailed Description

It will be right below the utility model discloses make further explanation, refer to fig. 1, an external diameter axiality processing frock, including core axis body 1 and the cover that expands, core axis body 1 divides the three-section, and both ends are for rotating linkage segment 11, and the middle part is the cover erection section 12 that expands, the cover erection section 12 that expands is located wait to process work piece 10, the cover that expands is installed on the cover erection section 12 that expands, and is located the cover erection section 12 that expands and wait to process between the work piece 10, and the cover erection section 12 that expands realizes being connected between core axis body 1 and the cylinder liner as the installation position of the cover that expands, processing has the cover positioning seat 13 that expands on the cover erection section 12, and the cover positioning seat 13 plays the effect of location for the installation of the cover that expands, provides the holding power when screwing up bloated tight screw 6, avoids the cover endwise slip that expands. The utility model discloses an expand set mode and can make dabber body 1 subtract heavy, need not other frock structures, loading and unloading operation is light moreover, through twisting two wedge rings of tight screw 6 that expand and move in opposite directions and produce the tight power of expanding, can realize the fixed of cylinder liner, and high with the axiality of internal diameter.

When in work: before, the inner diameter of the cylinder sleeve is honed firstly, after the inner diameter honing is finished, a workpiece 10 to be processed and the cylinder sleeve are arranged on a core shaft body 1, then an expansion sleeve is installed, an expansion screw 6 of the expansion sleeve is rotated, the expansion sleeve is expanded between the cylinder sleeve and the core shaft body 1, the inner diameter of the core shaft body 1 is consistent with that of the cylinder sleeve at the moment, the core shaft body 1 is connected with a connecting section and a rotating shaft of a machine tool, the coaxiality of the axis of the core shaft body 1 and the rotating shaft of the machine tool is adjusted, the core shaft body 1 is driven to rotate through the machine tool, then the outer diameter of the cylinder sleeve is processed through a cutting tool on the machine tool, and the outer diameter of the processed cylinder sleeve is consistent with that of the inner diameter.

The two ends of the expansion sleeve mounting section 12 are respectively provided with an expansion sleeve and an expansion sleeve positioning seat 13 which are symmetrically distributed left and right, the expansion sleeves are symmetrically arranged at the two ends, the left and right balance and symmetry effects are achieved, the stability of cylinder sleeve mounting is ensured, and force is balanced when the expansion screw 6 is screwed up, and the expansion screw cannot be over-tightened or over-loosened.

The expansion sleeve is a conical ring expansion sleeve, and is mainly composed of an inner positioning conical sleeve 2, an outer positioning conical sleeve 3, an expansion conical ring A4, an expansion conical ring B5 and an expansion screw 6, wherein a double-conical-ring cavity is reserved between the inner positioning conical sleeve 2 and the outer positioning conical sleeve 3, the expansion conical ring A4 and the expansion conical ring B5 are symmetrically arranged in the double-conical-ring cavity, and the expansion screw 6 penetrates through the expansion conical ring A4 and is in threaded fastening connection with the expansion conical ring B5. The internal positioning taper sleeve 2 and the external positioning taper sleeve 3 are provided with contraction expansion tight joints 9, so that the internal positioning taper sleeve 2 and the external positioning taper sleeve 3 are convenient to contract and expand. When screwing up tight screw 6 that expands, tight taper ring A4 that expands draws close to the middle part with tight taper ring B5 that expands, because the toper structural design of tight taper ring and two taper ring chamber that expands, interior location taper sleeve 2 shrink expands with the bloated cover installation section 12 of dabber body 1 tight, and outer location taper sleeve 3 expands and expands tightly with the cylinder liner internal diameter to this realizes that dabber body 1 and cylinder liner expand tightly fixedly. The expansion screw 6 is loosened during disassembly, so that the disassembly is very convenient and fast.

The inner positioning taper sleeve 2 is sleeved on the expansion sleeve mounting section 12 and is in expansion outer diameter fit with the core shaft body 1, high precision is not needed, the outer diameter is a double conical surface, and the angle is accurate; the outer positioning taper sleeve 3 is matched with the inner diameter of a processed workpiece, high precision is not needed, the inner diameter is a conical surface, and the angle is accurate; the expansion taper ring A4 and the expansion taper ring B5 are wedge rings and are matched with the inner positioning taper sleeve 3 and the outer positioning taper sleeve 3, so that the angle is accurate and high precision is not required;

the expansion screw 6 is provided with a plurality of expansion conical rings A4 and B5 which are distributed at equal intervals along the circumferential direction, so that the radial expansion force of the conical rings is uniform, and the expansion screw 6 is a GB70 national standard screw, and is low in cost, durable and convenient to replace. The whole expansion sleeve can be machined only by once clamping, and the coaxiality and the size requirements can be completely ensured.

The expansion screw 6 is provided with a plurality of expansion screws which are evenly distributed along the circumferential direction of the expansion conical ring A4 at intervals, through holes 61 matched with the expansion screws 6 are arranged on the expansion conical ring A4 and the boss 21, and internal thread holes matched with the expansion screws 6 are arranged on the expansion conical ring B5. The expansion taper ring A4 and the expansion taper ring B5 are close to the middle by screwing the expansion screw 6, so that the outer positioning taper sleeve 5 expands upwards and expands tightly. The expansion screw 6 adopts a GB70 standard screw, and is low in cost and durable.

Be equipped with the annular boss 21 of round on the external diameter of interior location taper sleeve 4, outer location taper sleeve 5 comprises left taper sleeve 31 and right taper sleeve 32, left side taper sleeve 31, right taper sleeve 32 are located the left and right sides of boss 21, and boss 21 is to the bloated tight screw 6 and the bloated cover 3 whole location limiting displacement that plays, can play the guide effect at left taper sleeve 31, the bloated in-process of right taper sleeve 32, ensures that left taper sleeve 31, right taper sleeve 32 expand toward radial direction.

After the expansion sleeve 3 is expanded, and the expansion screw 6 is loosened, the expansion sleeve 3 is still in an expanded state, and manual disassembly is relatively laborious, so that the release screw A71, the release screw B81 and the corresponding screw hole are configured, the expansion conical ring A4 is provided with an internal thread through hole A7 matched with the release screw A71, and because the boss 21 is not provided with a through hole matched with the release screw A71, when the release screw A71 is screwed, the release screw A71 is pressed against the boss 21, and the expansion conical ring A4 is reversely pushed out, so that the disassembly of the expansion conical ring A4 is realized; set up the through-hole B8 that is convenient for relax screw B81 and pass on bloated tight taper ring A4 and the boss 21, loosen screw B81 and can pass bloated tight taper ring A4 and boss 21 support on bloated tight taper ring B5's terminal surface, can push out bloated tight taper ring B5 is reverse through strikeing to this can realize the dismantlement of whole bloated cover 3, so that overhaul and installation use next time.

The core shaft body 1 is divided into an integral core shaft body 1 and a welding core shaft body 1, the core shaft body 1 of the integral core shaft body 1 is of a solid structure and is suitable for machining the outer diameter of a workpiece with the inner hole diameter being less than or equal to 60mm, the welding core shaft body 1 is adopted with the inner hole diameter being greater than 60mm due to the consideration of cost and weight, the welding core shaft body 1 is of a hollow structure, the rotating connecting sections 11 at two ends are integral, the inner hole can be machined to reduce weight, the middle expansion sleeve mounting section 12 can be welded into a whole by steel pipes, the weight can be reduced, materials can be saved, the cost can be reduced, the integral machining is simple, the high-precision machining requirement is avoided, and the manufacturing cost is low.

The whole product has reasonable design, simple and reliable structure, low manufacturing cost and easy guarantee of the processing precision of product parts.

The outer diameter coaxiality machining tool provided by the utility model is introduced in detail, and a specific example is applied to explain the principle and the implementation mode of the utility model, and the description of the above embodiment is only used for helping to understand the method and the core idea of the utility model; while the invention has been described in terms of specific embodiments and applications, it will be apparent to those skilled in the art that numerous variations and modifications can be made without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. The utility model provides an external diameter axiality processing frock which characterized in that: the expansion sleeve positioning device comprises a core shaft body and an expansion sleeve, wherein the core shaft body is divided into three sections, two ends of the core shaft body are rotation connecting sections, the middle of the core shaft body is an expansion sleeve mounting section, the expansion sleeve mounting section is located in a workpiece to be machined, the expansion sleeve is mounted on the expansion sleeve mounting section and located between the expansion sleeve mounting section and the workpiece to be machined, and an expansion sleeve positioning seat is machined on the expansion sleeve mounting section.

2. The outer diameter coaxiality machining tool according to claim 1, characterized in that: the two ends of the expansion sleeve mounting section are respectively provided with an expansion sleeve and an expansion sleeve positioning seat which are symmetrically distributed.

3. The outer diameter coaxiality machining tool according to claim 1, characterized in that: the expansion sleeve is a conical ring expansion sleeve which mainly comprises an inner positioning conical sleeve, an outer positioning conical sleeve, an expansion conical ring A, an expansion conical ring B and an expansion screw, a double-conical-ring cavity is reserved between the inner positioning conical sleeve and the outer positioning conical sleeve, the expansion conical ring A and the expansion conical ring B are symmetrically arranged in the double-conical-ring cavity, and the expansion screw penetrates through the expansion conical ring A and is in threaded fastening connection with the expansion conical ring B.

4. The outer diameter coaxiality machining tool according to claim 3, characterized in that: the inner positioning taper sleeve is sleeved on the expansion sleeve mounting section.

5. A compressor crankshaft coupling according to claim 3, wherein: the outer diameter of the inner positioning taper sleeve is provided with a circle of annular boss, the outer positioning taper sleeve is composed of a left taper sleeve and a right taper sleeve, and the left taper sleeve and the right taper sleeve are located on the left side and the right side of the boss.

6. The outer diameter coaxiality machining tool according to claim 5, characterized in that: the expansion screw is provided with a plurality of expansion screws which are evenly distributed along the circumferential direction of the expansion conical ring A at intervals, through holes matched with the expansion screws are formed in the expansion conical ring A and the boss, and internal thread holes matched with the expansion screws are formed in the expansion conical ring B.

7. The outer diameter coaxiality machining tool according to claim 5, characterized in that: the expansion taper ring A is provided with an internal thread through hole A matched with the loosening screw A, and the expansion taper ring A and the boss are provided with a through hole B convenient for the loosening screw B to pass through.

8. The outer diameter coaxiality machining tool according to claim 3, characterized in that: and the inner positioning taper sleeve and the outer positioning taper sleeve are both provided with contraction and expansion tight seams.

9. The outer diameter coaxiality machining tool according to claim 1, characterized in that: the core shaft body is divided into an integral core shaft body and a welding core shaft body, the core shaft body of the integral core shaft body is of a solid structure, and the welding core shaft body is of a hollow structure.