A supercharger main shaft mortise broaching tool and its assembly and detection method

Abstract

The present application relates to the technical field of machining, in particular to a supercharger spindle mortise broaching tool and its assembly and detection method, the supercharger spindle mortise broaching tool comprises a positioning body, two hanging ring screws, a bushing, a plurality of first screws, a second positioning pin, a broach guide body, a plurality of third washers, a plurality of sixth screws, two third positioning pins, a bottom guide plate, a plurality of fourth screws, two side guide plates, a plurality of eighth screws, a right upper pressing plate, a left upper pressing plate, a plurality of third screws, a bottom plate, a plurality of seventh screws, a plurality of fourth positioning pins, a positioning ring, a plurality of fifth screws, four sleeve rings, four second washers, four screw rods, four springs, four pressing plates, four first washers, four hexagonal nuts, a protractor disc, a positioning disc, a second screw, a first positioning pin, a spindle, a tension nut, a positioning bolt and a positioning bushing; the present application provides a spindle mortise broaching tool, which can assist in the mortise processing of the spindle.

Description

Technical Field

[0001] The present invention relates to the technical field of mechanical processing, and in particular to a supercharger main shaft tenon-groove broaching tool and an assembly and detection method thereof. Background Art

[0002] In recent years, with changes in the international landscape, my country's shipbuilding industry has experienced rapid growth, maintaining a leading global market share. As a key component of marine diesel engines, the primary propulsion system for ships, the technical level of the turbocharger directly impacts their efficiency, presenting both opportunities and challenges for the company's development. The main shaft is the core component of the turbocharger, primarily responsible for transmitting torque. Its operating environment is subject to high temperatures and torsional stress during operation. The main shaft structure primarily consists of a multi-stage shaft diameter and a turbine disk. The turbine disk is circumferentially equipped with evenly distributed, tree-like grooves for assembling turbine blades. The symmetrical centerline of the grooves forms an angle with the centerline of the turbine disk, and the intersection of the two projections is on the turbine disk. This intersection serves as the design center of the grooves, which have a precise positional relationship on the turbine disk. This type of structure is difficult to machine and requires high precision. The machining accuracy and quality of the main shaft grooves directly impact the airflow, efficiency, and service life of the turbocharger.

[0003] To improve processing quality and production efficiency, the spindle's tenon and groove are processed by broaching with a broach. This method has high processing efficiency, is suitable for mass production, and has a good cost-effectiveness. However, broaching this type of structure requires the use of special auxiliary tools for clamping and positioning, so a spindle tenon and groove broaching tool is needed. Summary of the Invention

[0004] The purpose of the present invention is to provide a supercharger spindle tenon broaching tool and an assembly and detection method thereof, aiming to provide a spindle tenon broaching tool that can assist in the tenon processing of the spindle.

[0005] To achieve the above objectives, in a first aspect, the present invention provides a supercharger spindle tenon and groove broaching tool, comprising a positioning body, two eye screws, a bushing, a plurality of first screws, a second locating pin, a broach guide body, a plurality of third washers, a plurality of sixth screws, two third locating pins, a bottom guide plate, a plurality of fourth screws, two side guide plates, a plurality of eighth screws, a right upper pressure plate, a left upper pressure plate, a plurality of third screws, a bottom plate, a plurality of seventh screws, a plurality of fourth locating pins, a positioning ring, a plurality of fifth screws, four ferrules, four second washers, four screws, four springs, four pressure plates, four first washers, four hexagonal nuts, a dividing plate, a positioning plate, a second screw, a first locating pin, a spindle, a tightening nut, a positioning pin, and a positioning bushing;

[0006] The two eye screws are respectively arranged on the positioning body; the bushing is located on the side of the positioning body; multiple first screws are respectively threadedly connected to the positioning body and respectively pass through the bushing; the second positioning pin passes through the bushing and is inserted into the positioning body; the broach guide body is located on the side of the positioning body; multiple third washers are respectively located on the side of the broach guide body; multiple sixth screws are respectively threadedly connected to the positioning body and respectively pass through the broach guide body and multiple washers; two third positioning pins respectively pass through the broach guide body and are respectively inserted into the positioning body; the bottom guide plate is located on one side of the broach guide body; multiple fourth screws are respectively threadedly connected to the bottom guide plate and respectively pass through the broach guide body; each side guide plate is fixed to the broach guide body by multiple eighth screws; the upper right pressure plate and the upper left pressure plate are both fixed to the broach guide body by multiple third screws; the bottom plate is located on the side of the positioning body; multiple seventh screws are respectively threadedly connected to the positioning body and respectively pass through the The lockhole that is formed on the locking sprocket wheel is formed in the direction of sliding, and the locking sprocket wheel is located on the top of the locking sprocket. The locking sprocket wheel is located on the top of the locking sprocket. The locking sprocket is controlled by a pin of the locking sprocket. When the locking sprocket is controlled by a pin of the locking sprocket, the locking sprocket is controlled by a pin of the locking sprocket. When the locking sprocket is controlled by a pin of the locking sprocket, the locking sprocket is controlled by a pin of the locking sprocket.

[0007] In a second aspect, the present invention further provides a method for assembling a supercharger spindle mortise and tenon broaching tool, the specific steps comprising:

[0008] Assemble the bushing on the positioning body with a first screw and use a second positioning pin to limit the circumference;

[0009] Assemble the broach guide body to the positioning body using the third washer and the sixth screw, and use the third positioning pin to limit the left and right positions;

[0010] Assemble the bottom guide plate to the broach guide body with the fourth screw;

[0011] Assemble the side guide plate to the broach guide body with the eighth screw;

[0012] Assemble the right upper pressure plate and the left upper pressure plate to the broach guide body with the third screw;

[0013] Assemble the bottom plate to the positioning body with the seventh screw and limit it with the fourth positioning pin;

[0014] Assemble the locating ring to the base plate with the fifth screw;

[0015] Thread the ferrule onto the positioning body and place a second washer on the bottom end;

[0016] Assemble the screw thread onto the ferrule, assemble the spring into the inner hole of the ferrule step, and sleeve it onto the screw;

[0017] Assemble the pressing plate onto the ferrule, pass the screw through the axial through hole of the pressing plate, and assemble the first washer and the hexagonal nut onto the screw;

[0018] Assemble the indexing plate and the positioning plate into a whole with the second screw, and use the first positioning pin to limit the circumference, and then place the whole onto the bushing;

[0019] After the vortex end of the main shaft is aligned with the assembled indexing plate and positioning plate, the outer diameter of the threaded end of the tightening nut is extended into the inner hole of the indexing plate. The inner thread of the tightening nut is matched with the outer thread of the shaft diameter of the main shaft vortex end, and tightened until the step end face and the small end face of the indexing plate are tightly fitted and limited, and the main shaft, positioning plate and indexing plate are connected and fixed;

[0020] Assemble the positioning pin on the bushing, match the flat surface with the vertical rectangular notch on the large end face of the bushing, and insert it into the radial pin hole of the dividing plate below the bushing, and set the positioning bushing accordingly.

[0021] In a third aspect, the present invention further provides a method for detecting a supercharger spindle mortise broaching tool, the specific steps comprising:

[0022] Place the whole consisting of the positioning body, bushing and broach guide body on the inspection work platform;

[0023] Use a height gauge to roughly measure the pin hole height T';

[0024] Then, using a standard measuring tool, gauge blocks of different specifications are wiped clean according to the roughly measured height dimension T′ and combined into gauge blocks of a certain height dimension R, and the height dimension R of the combined gauge blocks is recorded;

[0025] The combined gauge block is the measurement reference. Use the lever dial indicator to calibrate the dial indicator to zero based on the measurement reference. Push the lever dial indicator to measure the lowest point of the pin hole. Read and record the lever dial indicator reading Q1.

[0026] Calculate the actual measured dimension T of the pin hole height: T = R + Q1;

[0027] Use a height gauge to roughly measure the height dimension X' of the broach guide body;

[0028] Use standard measuring tools, gauge blocks, to roughly measure the height dimension X′. Wipe the gauge blocks of different specifications clean and combine them into a gauge block of a certain height dimension P. Record the height dimension P of the combined gauge blocks.

[0029] The combined gauge block is the measurement reference. Use the lever dial indicator to calibrate the dial indicator to zero based on the measurement reference. Push the lever dial indicator to measure the U-groove positioning surface M of the broach guide body. Read and record the lever dial indicator reading Q2.

[0030] Calculate the actual measured dimension X of the height of the U-groove positioning surface M of the broach guide body: X=P+Q2;

[0031] Use an electronic three-jaw internal micrometer to measure the pin hole diameter Φ and record it;

[0032] Use a slot micrometer to measure the width dimension Z of the U-shaped slot of the broach guide;

[0033] Calculate the measured value of the space dimension H′, H′=(X+Z / 2)-(T+Φ / 2);

[0034] Determine whether the projection of the second fixed body's spatial design center point, i.e., the spindle tenon and groove broaching tool's spatial design center point, is on the symmetrical center line of the broaching tool guide's U-shaped groove or within the allowable deviation range, and whether the measured spatial dimension H' is within the tolerance of the spindle tenon and groove broaching tool's design drawing dimension H±0.01. If so, the broaching tool guide assembly is qualified. If not, adjust the broaching tool guide position until the adjustment test meets the dimension H±0.01 requirement, and record the final H±0.01.

[0035] Tighten the screws of the broach guide body and the positioning body to connect them firmly, assemble them into a whole, and then drill and hinge the pin holes;

[0036] The positioning pins are matched according to the size of the drilled and reamed pin holes, and the pin holes and pins are required to have a transition fit to prevent the fit clearance from being too large and the positioning from being inaccurate;

[0037] Assemble the locating pin into the pin hole, which can be assembled by press-fitting or cold-fitting, thus completing the assembly limit and detection of the broach guide body.

[0038] According to the recorded final H±0.01 dimension, grind the thickness of the side guide plate and inspect the side guide plate to ensure that the side guide plate meets the width of the tool cavity after assembly. The spatial design center point of the spindle tenon and groove broaching tool is projected onto the symmetrical center line of the broach guide body cavity or within the allowable deviation range.

[0039] The present invention provides a supercharger spindle tenon broaching tool and an assembly and inspection method thereof. When in use, the spindle tenon broaching tool is assembled and fixed as required and connected and fixed to an ordinary horizontal internal broaching machine. The machine tool is started, and the broaches are manually fed into the broaching tool tool cavity in the order of the tools. The machine tool drives the broaches to perform linear motion for cutting. After the entire set of broaches has broached once, a tenon is processed; the hexagonal nut on the pressure plate is loosened, the positioning pin is taken out, the fixed body composed of the dividing plate, the positioning plate, the spindle and the tightening nut is rotated for indexing, the positioning pin is reinserted to limit, the hexagonal nut is tightened and pressed, and the broaches are fed in order of the tools for broaching. This operation is repeated until the entire spindle tenon contour is processed, thereby assisting the tenon processing of the spindle. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art.

[0041] Figure 1 It is a cross-sectional view of the spindle tenon and groove broaching tool of the present invention.

[0042] Figure 2 yes Figure 1 Cross-sectional view along direction BB.

[0043] Figure 3 It is a structural schematic diagram of the spindle tenon and groove broaching tool of the present invention.

[0044] Figure 4 It is a structural schematic diagram of the spindle tenon and groove broaching tool of the present invention from another angle.

[0045] Figure 5 It is a structural schematic diagram of the main shaft of the present invention.

[0046] Figure 6 It is a structural schematic diagram of the bushing of the present invention.

[0047] Figure 7 It is a structural schematic diagram of the positioning plate of the present invention.

[0048] Figure 8 It is a structural schematic diagram of the indexing plate of the present invention.

[0049] Figure 9 It is a structural schematic diagram of the pressing plate of the present invention.

[0050] Figure 10 It is a structural schematic diagram of the screw of the present invention.

[0051] Figure 11 It is a structural schematic diagram of the spring of the present invention.

[0052] Figure 12It is a structural schematic diagram of the ferrule of the present invention.

[0053] Figure 13 It is a structural schematic diagram of the positioning body of the present invention.

[0054] Figure 14 It is a structural schematic diagram of the tightening nut of the present invention.

[0055] Figure 15 It is a structural schematic diagram of the positioning latch of the present invention.

[0056] Figure 16 It is a structural schematic diagram of the positioning ring of the present invention.

[0057] Figure 17 It is a structural schematic diagram of the right upper pressing plate of the present invention.

[0058] Figure 18 It is a structural schematic diagram of the side guide plate of the present invention.

[0059] Figure 19 It is a structural schematic diagram of the bottom guide plate of the present invention.

[0060] Figure 20 It is a structural schematic diagram of the upper left pressing plate of the present invention.

[0061] Figure 21 It is a structural schematic diagram of the base plate of the present invention.

[0062] Figure 22 It is a structural schematic diagram of the broach guide body of the present invention.

[0063] Figure 23 It is a structural schematic diagram of the positioning body, bushing and broach guide body of the present invention.

[0064] Figure 24 It is a partial flow chart of an assembly method of a supercharger spindle tenon and groove broaching tool according to the present invention.

[0065] Figure 25 It is a partial flow chart of an assembly method of a supercharger spindle tenon and groove broaching tool according to the present invention.

[0066] Figure 26 It is a partial flow chart of a method for detecting a supercharger spindle tenon broaching tool according to the present invention.

[0067] Figure 27 It is a partial flow chart of a method for detecting a supercharger spindle tenon broaching tool according to the present invention.

[0068] 1-first screw, 2-bushing, 3-positioning plate, 4-second screw, 5-indexing plate, 6-third screw, 7-fourth screw, 8-first positioning pin, 9-pressure plate, 10-screw, 11-hexagonal nut, 12-first washer, 13-spring, 14-ring, 15-second washer, 16-positioning body, 17-second positioning pin, 18-tensioning nut, 19-positioning bushing, 20-positioning pin, 21-positioning ring, 22-fifth screw, 23-third washer, 24-sixth screw, 25-upper right pressure plate, 26-side guide plate, 27-bottom guide plate, 28-upper left pressure plate, 29-third positioning pin, 30-eye screw, 31-fourth positioning pin, 32-bottom plate, 33-seventh screw, 34-eighth screw, 35-broaching guide, 36-spindle. DETAILED DESCRIPTION

[0069] See also Figure 1-Figure 27 In a first aspect, the present invention provides a supercharger spindle tenon and groove broaching tool:

[0070] It includes a positioning body 16, two eye screws 30, a bushing 2, multiple first screws 1, a second positioning pin 17, a broach guide body 35, multiple third washers 23, multiple sixth screws 24, two third positioning pins 29, a bottom guide plate 27, multiple fourth screws 7, two side guide plates 26, multiple eighth screws 34, an upper right pressure plate 25, an upper left pressure plate 28, multiple third screws 6, a bottom plate 32, multiple seventh screws 33, multiple fourth positioning pins 31, a positioning ring 21, multiple fifth screws 22, four ferrules 14, four second washers 15, four screws 10, four springs 13, four pressure plates 9, four first washers 12, four hexagonal nuts 11, an indexing plate 5, a positioning plate 3, a second screw 4, a first positioning pin 8, a spindle 36, a tightening nut 18, a positioning pin 20 and a positioning bushing 19;

[0071] The two eye screws 30 are respectively arranged on the positioning body 16; the bushing 2 is located on the side of the positioning body 16; the plurality of the first screws 1 are respectively threadedly connected to the positioning body 16 and respectively pass through the bushing 2; the second positioning pin 17 passes through the bushing 2 and is inserted on the positioning body 16; the broach guide 35 is located on the side of the positioning body 16; the plurality of the third washers 23 are respectively located on the side of the broach guide 35; the plurality of the sixth screws 24 are respectively threadedly connected to the positioning body 16 and respectively pass through the broach guide 35 and the plurality of washers; the two third positioning pins 29 respectively pass through the broach guide 35 and the plurality of washers. The tool guide body 35 is provided with a plurality of the fourth screws 7 and the plurality of the eighth screws 34, and the plurality of the eighth screws 34 are fixed to the tool guide body 35; the upper right pressure plate 25 and the upper left pressure plate 28 are fixed to the tool guide body 35 by the plurality of the third screws 6; the bottom plate 32 is provided on the side of the positioning body 16; the plurality of the seventh screws 33 are respectively threadedly connected to the positioning body 16 and respectively pass through the bottom plate 3 2; the plurality of fourth positioning pins 31 pass through the base plate 32 respectively and are respectively inserted into the positioning body 16; the positioning ring 21 is located on the side of the base plate 32; the plurality of fifth screws 22 are respectively threadedly connected to the base plate 32 and pass through the positioning ring 21 respectively; each of the ferrules 14 is threadedly connected to the positioning body 16 and is located on one side of the positioning body 16; each of the ferrules 14 is provided with a second washer 15 on the side close to the positioning body 16; each of the ferrules 14 is threadedly installed with a screw rod 10; each of the screw rods 10 is sleeved with a spring 13; each of the pressure plates 9 is threadedly connected with a The first washer 12 and the hexagonal nut 11 are arranged on the screw 10; the dividing plate 5 is located on the inner side of the bushing 2; the positioning plate 3 is located on one side of the dividing plate 5; the second screw 4 is threadedly connected to the dividing plate 5 and passes through the positioning plate 3; the first positioning pin 8 passes through the positioning plate 3 and is inserted on the dividing plate 5; the main shaft 36 is located on the inner side of the dividing plate 5; the tightening nut 18 is threadedly connected to the main shaft 36 and is located on one side of the dividing plate 5; the positioning pin 20 is inserted in the radial pin hole of the dividing plate 5; the positioning bushing 19 is arranged on one side of the positioning pin 20.

[0072] In this embodiment, the bushing 2 has the functions of transition positioning and indexing limit. It is assembled on the positioning body 16. The outer circle of the boss and the stepped end face of the bushing 2 match the inclined central inner hole and the sink end face of the front part of the positioning body 16. The axial screw holes are aligned, and the rectangular notch on the large end face of the bushing 2 is vertically upward. It is connected and fixed by the first screw 1. After the fixation is completed, a pin hole is drilled along the axial direction on the end face and a second positioning pin 17 is installed to perform circumferential limit.

[0073] The function of the positioning plate 3 is to connect and position the main shaft 36; it is connected and fixed with the indexing plate 5 as a whole; the convex circle and the step end face of the small end of the positioning plate 3 cooperate with the step inner hole and the large end face of the indexing plate 5, the axial screw holes are aligned, and it is connected and fixed by the second screw 4. After the fixation is completed, a pin hole is drilled along the axial direction on the end face and a first positioning pin 8 is installed for circumferential limit. The large end countersunk hole and the large end face of the positioning plate 3 cooperate with the outer circle of the step of the vortex end of the main shaft 36 and the tenon end face for positioning: Requirements: a. The positioning plate 3 and the indexing plate 5 cannot be disassembled after they are assembled, connected, fixed and limited; b. After the main shaft tenon and groove broaching tool is assembled, before processing the main shaft 36 tenon, it is necessary to first broach the guide tenon on the outer ring of the positioning plate 3 before the main shaft 36 tenon can be assembled to process the main shaft 36 tenon;

[0074] The function of the indexing plate 5 is: rotation indexing; the indexing plate 5 is provided with radial pin holes on the outer circle of the large diameter, and the number of the pin holes is the same as the number of the tenon grooves on the main shaft 36, that is, 42. The 42 pin holes are distributed on three circumferential sections, and the angular spacing of adjacent pin holes is the same, and the angular spacing is only allowed to deviate by ±0.01°; it is connected and fixed to the positioning plate 3 as a whole, and the inner hole and large end surface of the step of the indexing plate 5 match the convex circle and the step end surface of the small end of the positioning plate 3, and the axial screw holes are aligned. It is connected and fixed by the second screw 4. A pin hole is drilled axially on the end face and the first positioning pin 8 is installed to limit the circumference. After the indexing plate 5 and the positioning plate 3 are assembled and fixed, the main shaft 36 and the tightening nut 18 are assembled and fixed to the fixed indexing plate 5 and the positioning plate 3 as a whole. The outer circle of the boss of the indexing plate 5 and the step end face of the positioning plate 3 are matched with the inner hole and large end face of the assembled and fixed bushing 2. The whole assembly is then positioned on the main shaft tenon and groove broaching tool: Requirements: a. The indexing plate 5 and the positioning plate 3 cannot be disassembled after being assembled, connected and fixed;

[0075] The function of the pressure plate 9 is to press and fix the main shaft 36, indexing plate 5, positioning plate 3, and tightening nut 18, which have been assembled and fixed as a whole, to the main shaft tenon broaching tool; it is assembled on the ring 14, and the axial through hole of the pressure plate 9 passes through the screw 10 and is sleeved on the ring 14. The outer circle of the step of the pressure plate 9 matches the inner hole of the step of the ring 14, and the inner hole step surface of the pressure plate 9 contacts and is positioned by the spring 13;

[0076] The function of the screw 10 is to cooperate with the pressure plate 9 and the hexagonal nut 11 to fasten the main shaft 36, the indexing plate 5, the positioning plate 3, and the tightening nut 18, which are assembled and fixed as a whole, to the main shaft tenon and groove broaching tool; assembled on the ring 14, the external thread of the screw 10 cooperates with the internal thread of the stepped inner hole of the ring 14 to limit the connection;

[0077] The function of the spring 13 is to support the pressure plate 9 and reset the pressure plate 9; it passes through the screw 10 and is assembled in the inner hole of the step of the ring 14;

[0078] The function of the ferrule 14 is to limit the pressure plate 9; it is assembled on the positioning body 16, and the external thread of the small end of the ferrule 14 cooperates with the threaded hole on the inclined large end face of the front of the positioning body 16, and the step surface is flat and limited.

[0079] The function of the positioning body 16 is: it has a special-shaped structure and plays a supporting, positioning and connecting role; the rear end face of the positioning body 16 cooperates with the end face of the boss of the bottom plate 32, the two end faces below the inclined central inner hole of the front of the positioning body 16 cooperate with the two end faces of the rear of the broach guide body 35, the inclined central inner hole and the sink end face of the front of the positioning body 16 cooperate with the outer circle and step end face of the boss of the bushing 2, and the inclined large end face of the front of the positioning body 16 and its threaded hole cooperate with the external thread and step face of the small end of the ring 14;

[0080] The function of the tightening nut 18 is to connect and fix the main shaft 36 parts with the assembled and fixed positioning plate 3 and indexing plate 5 as a whole; after the vortex end of the main shaft 36 is positioned with the assembled and fixed indexing plate 5 and positioning plate 3, the outer circle of the threaded end of the tightening nut 18 is extended into the inner hole of the indexing plate 5, and the inner thread of the tightening nut 18 is tightened with the outer thread of the shaft diameter of the vortex end of the main shaft 36 until the step end face and the small end face of the indexing plate 5 are tightly fitted and limited, thereby connecting and fixing the main shaft 36 and the positioning plate 3 and indexing plate 5;

[0081] The function of the positioning pin 20 is to limit the position and prevent rotation. It is assembled on the bushing 2, with the flat surface matching the vertical rectangular notch on the large end face of the bushing 2 and inserted into the radial pin hole of the indexing plate 5 below the bushing 2, thereby achieving the function of limiting the position and preventing rotation.

[0082] The function of the positioning ring 21 is to position the spindle tenon and groove broaching tool with the machine tool. It is assembled on the base plate 32. The small outer circle of the boss is fixed with the circular inner hole and end face of the base plate 32. The fifth screw 22 is used to fix it. The large outer circle is fixed with the inner hole of the workbench of the ordinary horizontal internal broaching machine. When in use, the broach passes through the inner hole of the positioning ring 21 and makes a linear motion.

[0083] The function of the upper right pressure plate 25 is: to cooperate with the broach guide body 35 to limit the broach in the vertical direction, so that the broach can only move linearly perpendicular to the U-shaped groove on the broach guide body 35; assembled on the broach guide body 35, the lower end face of the upper right pressure plate 25 is flush with the upper plane on the right side of the U-shaped groove on the broach guide body 35, the vertical hole axis is aligned, and it is connected and fixed with the third screw 6; requirements: a. The assembly sequence must be that the positioning body 16, bushing 2, broach guide body 35, bottom guide plate 27, and side guide plate 26 are all assembled and fixed before the upper right pressure plate 25 is assembled; b. When assembling the upper right pressure plate 25, it is necessary to control the upper right pressure plate 25 to be close to the outside of the U-shaped groove to ensure that there is a gap at the throat to facilitate the passage of the broach.

[0084] The function of the side guide plate 26 is to adjust the width of the tool cavity, cooperate with the broach guide body 35, limit the broach in the horizontal direction, so that the broach can only move linearly perpendicular to the U-shaped groove on the broach guide body 35. At the same time, the tool cavity is easy to wear, and the side guide plate 26 is easy to replace, and the tool maintenance is simple and low cost; it is assembled on the broach guide body 35, and the back of the groove of the side guide plate 26 is flush with the left and right planes of the U-shaped groove on the broach guide body 35, and there is one piece on the left and right sides of the U-shaped groove, and the horizontal hole axis is aligned, and it is connected and fixed with the eighth screw 34; requirements: a. The assembly sequence requires that the side guide plate 26 can be assembled only after the positioning body 16, bushing 2, broach guide body 35, and bottom guide plate 27 are all assembled and fixed; b. The thickness size of the side guide plate 26 needs to be specifically ground, and it must meet the tool cavity width size after grinding and assembly.

[0085] The function of the bottom guide plate 27 is to adjust the bottom plane of the tool cavity to the center height dimension of the spindle 36 part axis, cooperate with the broach guide body 35 to limit the broach in the vertical direction, so that the broach can only move linearly perpendicular to the U-shaped groove on the broach guide body 35. At the same time, the tool cavity is easy to wear, and the bottom guide plate 27 is easy to replace, which makes tool maintenance simple and low-cost. It is assembled on the broach guide body 35, with the end face of the groove of the bottom guide plate 27 flush with the bottom plane of the U-shaped groove on the broach guide body 35, and the vertical hole axis is aligned, and it is connected and fixed with the fourth screw 7. Requirements: a. The assembly sequence must be completed after the positioning body 16, bushing 2, and broach guide body 35 are assembled and fixed before the bottom guide plate 27 is assembled; b. The thickness dimension of the bottom guide plate 27 needs to be specifically ground, and after grinding and assembly, it must meet the center height dimension of 208±0.02;

[0086] The function of the upper left pressure plate 28 is: to cooperate with the broach guide body 35 to limit the broach in the vertical direction so that the broach can only move linearly perpendicular to the U-shaped groove on the broach guide body 35; assembled on the broach guide body 35, the lower end face of the upper left pressure plate 28 is flush with the upper plane on the left side of the U-shaped groove on the broach guide body 35, the vertical hole axis is aligned, and it is connected and fixed with the third screw 6; requirements: a. The assembly sequence requires that the positioning body 16, bushing 2, broach guide body 35, bottom guide plate 27, and side guide plate 26 are all assembled and fixed before the upper left pressure plate 28 is assembled; b. When assembling the upper left pressure plate 28, it is necessary to control the upper left pressure plate 28 to be close to the outside of the U-shaped groove to ensure that there is a gap at the throat to facilitate the passage of the broach.

[0087] The function of the base plate 32 is to connect with the machine tool and the positioning body 16; it is assembled on the positioning body 16, with the end face of the boss flush with the rear end face of the positioning body 16, the axis of the hole on the end face aligned, and fixed with the seventh screw 33. After the fixation is completed, a pin hole is drilled on the end face and a fourth positioning pin 31 is installed to limit the position. When in use, the back face of the boss end of the base plate 32 is positioned with the workbench of a conventional horizontal internal broaching machine, and the spindle tenon broaching tool is fixed to the equipment with a hexagonal bolt. Requirements: a. The assembly sequence must be completed after the bushing 2, positioning body 16, broaching tool guide body 35, bottom guide plate 27, side guide plate 26, upper right pressure plate 25, and upper left pressure plate 28 are completed before the base plate 32 is assembled;

[0088] The function of the broach guide body 35 is to guide the broach; it is assembled on the positioning body 16, and the two end faces below the inclined central inner hole of the rear part of the broach guide body 35 and the front part of the positioning body 16 are leveled for up and down and front and back limit. The axis of the end face hole is roughly aligned, and it is pre-connected and fixed with the third washer 23 and the sixth screw 24. According to the method described below, check whether the projection of the spatial design center point of the spindle tenon and groove broaching tool is on the symmetrical center line of the tool cavity of the broach guide body 35 (that is, the symmetrical center line of the U-shaped groove) or whether it is within the allowable deviation range. If not, it is necessary to adjust the broach guide body 35 to meet the requirements, tighten the screws to fix it, drill a pin hole at the rear part of the broach guide body 35 and install the third positioning pin 29 of the part 29 for left and right limit; requirements: a. The assembly sequence must be completed after the bushing 2 and the positioning body 16 are assembled and fixed before the broach guide body 35 is assembled;

[0089] When in use, the spindle tenon broaching tool is assembled and fixed as required and connected and fixed to an ordinary horizontal internal broaching machine, the machine tool is started, and the broaches are manually fed into the broaching tool cavity in the order of the tools. The machine tool drives the broaches to make linear motion for cutting. After the whole set of broaches has been broached once, a tenon is processed; loosen the hexagonal nut 11 on the pressure plate 9, take out the positioning pin 20, rotate the fixed body composed of the dividing plate 5, the positioning plate 3, the spindle 36 and the tightening nut 18 to index, reinsert the positioning pin 20 to limit, tighten the hexagonal nut 11 to press, feed the tools in the order of the broaching tools for broaching, repeat this operation until the entire spindle 36 tenon contour is processed, thereby assisting the tenon processing of the spindle 36.

[0090] In a second aspect, the present invention further provides a method for assembling a supercharger spindle mortise and tenon broaching tool, the specific steps comprising:

[0091] S101: Assemble the bushing 2 on the positioning body 16 with the first screw 1 and use the second positioning pin 17 to limit the circumferential position;

[0092] S102: Assemble the broach guide 35 onto the positioning body 16 using the third washer 23 and the sixth screw 24, and use the third positioning pin 29 to limit the left and right positions.

[0093] S103: Assemble the bottom guide plate 27 to the broach guide body 35 using the fourth screw 7;

[0094] S104: Assemble the side guide plate 26 to the broach guide body 35 using the eighth screw 34;

[0095] S105: Assemble the right upper pressing plate 25 and the left upper pressing plate 28 to the broach guide 35 using the third screw 6;

[0096] S106: Assemble the base plate 32 onto the positioning body 16 using the seventh screw 33 and limit the position using the fourth positioning pin 31;

[0097] S107: Assemble the positioning ring 21 onto the bottom plate 32 using the fifth screw 22;

[0098] S108: Thread the ferrule 14 onto the positioning body 16 and set a second washer 15 at the bottom end;

[0099] S109: Thread the screw 10 onto the ferrule 14, assemble the spring 13 into the stepped inner hole of the ferrule 14, and sleeve it onto the screw 10;

[0100] S110: Assemble the pressing plate 9 onto the ferrule 14, pass the screw 10 through the axial through hole of the pressing plate 9, and assemble the first washer 12 and the hexagonal nut 11 onto the screw 10;

[0101] S111 Assemble the index plate 5 and the positioning plate 3 into a whole with the second screw 4, and use the first positioning pin 8 to limit the circumferential position, and then place the whole onto the bushing 2;

[0102] S112: After the vortex end of the main shaft 36 is aligned with the assembled index plate 5 and the positioning plate 3, the outer diameter of the threaded end of the tightening nut 18 is inserted into the inner hole of the index plate 5. The inner thread of the tightening nut 18 is aligned with the outer thread of the shaft diameter of the vortex end of the main shaft 36 and tightened until the stepped end face and the small end face of the index plate 5 are tightly aligned and limited, thereby connecting and fixing the main shaft 36, the positioning plate 3, and the index plate 5.

[0103] S113 assembles the positioning pin 20 on the bushing 2, with the flat surface matching the vertical rectangular notch on the large end face of the bushing 2, and inserting it into the radial pin hole of the dividing plate 5 below the bushing 2, and correspondingly setting the positioning bushing 19.

[0104] In a third aspect, the present invention further provides a method for detecting a supercharger spindle mortise broaching tool, the specific steps comprising:

[0105] S201: Place the whole consisting of the positioning body 16, the bushing 2 and the broach guide body 35 on the inspection work platform;

[0106] Since the positioning body 16 is a special-shaped part and is cast, in order to reduce the difficulty of processing and improve the processing efficiency, the surfaces that do not participate in the positioning are not processed and are blank surfaces. The flatness is poor and cannot be directly used as a positioning reference. Therefore, a meter is used to detect the runout of the U-shaped groove positioning surface M of the broach guide body 35. By adjusting the support (or adding a pad), the second fixed body is corrected to a level with a runout of no more than 0.01. At the same time, the detection pin hole Φ on the positioning body 16 is recalibrated to be horizontal.

[0107] S202 Use a height gauge to roughly measure the pin hole height dimension T';

[0108] S203 Then, using a standard measuring tool gauge block, according to the roughly measured height dimension T′, the gauge blocks of different specifications are wiped clean and combined into a gauge block of a certain height dimension R, and the height dimension R of the combined gauge blocks is recorded;

[0109] Requirements: a. The gauge blocks must be securely and reliably adsorbed against each other; b. The height dimension R of the combined gauge blocks must be as close as possible to dimension T′, with a difference of no more than 0.1mm. (Note: Because the final inspection space dimension tolerance is ±0.01mm, a lever dial indicator with an accuracy of 0.002mm or 0.001mm is required to meet the measurement dimension accuracy. To prevent damage to the dial indicator due to exceeding the measuring range, the dimension difference must not exceed 0.1mm).

[0110] The gauge block of the S204 assembly is used as the measurement reference. Use the lever dial indicator to calibrate the dial indicator to zero based on the measurement reference. Push the lever dial indicator to measure the lowest point of the pin hole. Read and record the lever dial indicator reading Q1.

[0111] Use a lever micrometer with an accuracy of 0.002mm or 0.001mm.

[0112] S205 calculates the actual measured dimension T of the pin hole height: T=R+Q1;

[0113] S206: Use a height gauge to roughly measure the height dimension X′ of the broach guide body 35;

[0114] S207 uses standard measuring tools, gauge blocks, to roughly measure the height dimension X′, wipe the gauge blocks of different specifications clean and combine them into a gauge block of a certain height dimension P, and record the height dimension P of the combined gauge blocks;

[0115] Requirements: a. The gauge blocks must be securely and reliably attached to each other; b. The height dimension P of the combined gauge blocks must be as close as possible to dimension X′, with a difference of no more than 0.1mm. (Note: Because the final test space dimension tolerance is ±0.01mm, a lever dial indicator with an accuracy of 0.002mm or 0.001mm is required to meet the measurement dimensional accuracy. To prevent damage to the dial indicator due to exceeding the measuring range, the dimension difference must not exceed 0.1mm).

[0116] Use the S208 assembly gauge block as the measurement reference, use a lever dial indicator to calibrate the dial indicator to zero based on the measurement reference, push the lever dial indicator to measure the 35U-shaped groove positioning surface M of the broach guide body, and read and record the lever dial indicator reading Q2;

[0117] Use a lever micrometer with an accuracy of 0.002mm or 0.001mm.

[0118] S209 calculates the actual measured dimension X of the height of the 35U-shaped groove positioning surface M of the broach guide body: X=P+Q2;

[0119] S210 uses an electronic three-jaw internal micrometer to measure the pin hole diameter Φ and record it;

[0120] The measuring range is 12-16 / 0.001 electronic three-jaw inside micrometer.

[0121] S211 Use a slot micrometer to measure the width dimension Z of the 35U slot of the broach guide;

[0122] The measuring range used is 50-75 / 0.001 groove micrometer.

[0123] S212 calculates the measured value of the space dimension H′, H′=(X+Z / 2)-(T+Φ / 2);

[0124] S213 determines whether the projection of the second fixed body's spatial design center point, i.e., the spindle tenon and groove broaching tool's spatial design center point, is on the symmetrical center line of the U-shaped groove of the broaching tool guide body 35 or within the allowable deviation range, and whether the actual measured spatial dimension H′ is within the tolerance of the spindle tenon and groove broaching tool's design drawing dimension H±0.01. If so, the broaching tool guide body 35 is assembled properly. If not, the position of the broaching tool guide body 35 needs to be adjusted until the adjustment test meets the dimension requirement of H±0.01, and the final H±0.01 is recorded.

[0125] S214: The broach guide body 35 and the positioning body 16 are screwed together and fixed firmly, and then drilled and hinged pin holes are prepared after the whole is assembled;

[0126] S215 is equipped with positioning pins according to the size of the drilled and reamed pin holes, and requires a transition fit between the pin hole and the pin to prevent excessive clearance and inaccurate positioning.

[0127] S216 assembles the positioning pin into the pin hole, which can be assembled by press-fitting or cold-fitting, thereby completing the assembly limit and detection of the broach guide body 35.

[0128] S217 grinds the thickness of the side guide plate 26 according to the recorded final H±0.01 dimension and inspects the side guide plate 26 to ensure that the side guide plate 26 meets the width dimension of the knife cavity after assembly. The spatial design center point of the spindle mortise and tenon broaching tool is projected onto the symmetrical center line of the broach guide body 35 tool cavity or within the allowable deviation range.

[0129] The same method and principle as above is adopted when detecting the side guide plate 26.

[0130] The present invention provides a supercharger spindle tenon broaching tool and its assembly and detection method. The spindle tenon broaching tool has the characteristics of manual indexing and manual knife feeding, is simple and convenient to operate, easy to repair after wear, has a long service life, is economical and applicable, has the advantages of reliable positioning connection and high broaching precision. A detection pin hole is set on the inner hole of the positioning body 16 that is positioned and matched with the bushing 2. The axis of the detection pin hole is required to be along the radial direction of the positioning inner hole and perpendicular to the positioning bottom plane (i.e., vertically upward direction) that matches the U-shaped groove of the broach guide body 35, and pass through the positioning body 16. Through the detection pin hole structure, the following problems are solved: a. In the absence of professional detection equipment, it is impossible to detect whether the projection of the spatial design center point of the spindle tenon broaching tool is on the broach guide body Whether the guide body 35 is on the symmetrical center line of the tool cavity or is within the allowable deviation range; b. In the absence of professional testing equipment, the assembly of the broach guide body 35 has no assembly measurement reference, and it is impossible to determine whether the assembly position is correct; the detection of the spatial geometric dimensions of the positioning body 16 and the broach guide body 35 is realized; the detection pin hole serves as the assembly measurement reference of the broach guide body 35, which has important guiding significance for the assembly and adjustment of the broach guide body 35 and plays a key role. The advantage of this method is that it does not require the aid of professional testing equipment to realize the detection and measurement of spatial geometric dimensions, reduce the detection cost, has the advantages of low processing difficulty and convenience, simple structure, convenient assembly operation and detection, high detection accuracy, strong practicality, and high efficiency.

[0131] The above disclosure is merely one or more preferred embodiments of the present application and is not intended to limit the scope of the present application. A person skilled in the art will understand that all or part of the processes of the above embodiments and equivalent changes made in accordance with the claims of the present application are still within the scope of the present application.

Claims

1. A method for detecting a supercharger spindle mortise and tenon broaching tool, characterized in that: The specific steps include: Place the whole consisting of the positioning body, bushing and broach guide body on the inspection work platform; Use a height gauge to roughly measure the pin hole height T'; Then, using a standard measuring tool, gauge blocks of different specifications are wiped clean according to the roughly measured height dimension T′ and combined into gauge blocks of a certain height dimension R, and the height dimension R of the combined gauge blocks is recorded; The combined gauge block is the measurement reference. Use the lever dial indicator to calibrate the dial indicator to zero based on the measurement reference. Push the lever dial indicator to measure the lowest point of the pin hole. Read and record the lever dial indicator reading Q1. Calculate the actual measured dimension T of the pin hole height: T=R+Q1; Use a height gauge to roughly measure the height dimension X' of the broach guide body; Use standard measuring tools, gauge blocks, to roughly measure the height dimension X′. Wipe the gauge blocks of different specifications clean and combine them into a gauge block of a certain height dimension P. Record the height dimension P of the combined gauge blocks. The combined gauge block is the measurement reference. Use the lever dial indicator to calibrate the dial indicator to zero based on the measurement reference. Push the lever dial indicator to measure the U-groove positioning surface M of the broach guide body. Read and record the lever dial indicator reading Q2. Calculate the actual measured dimension X of the height of the U-groove positioning surface M of the broach guide body: X=P+Q2; Use an electronic three-jaw internal micrometer to measure the pin hole diameter Φ and record it; Use a slot micrometer to measure the width dimension Z of the U-shaped slot of the broach guide; Calculate the measured value of the space dimension H′, H′=(X+Z / 2)-(T+Φ / 2); Determine whether the projection of the second fixed body's spatial design center point, i.e., the spindle tenon and groove broaching tool's spatial design center point, is on the symmetrical center line of the broaching tool guide's U-shaped groove or within the allowable deviation range, and whether the measured spatial dimension H' is within the tolerance of the spindle tenon and groove broaching tool's design drawing dimension H±0.

01. If so, the broaching tool guide assembly is qualified. If not, adjust the broaching tool guide position until the adjustment test meets the dimension H±0.01 requirement, and record the final H±0.

01. Tighten the screws of the broach guide body and the positioning body to connect them firmly, assemble them into a whole, and then drill and hinge the pin holes; The positioning pins are matched according to the size of the drilled and reamed pin holes, and the pin holes and pins are required to have a transition fit to prevent the fit clearance from being too large and the positioning from being inaccurate; Assemble the positioning pin into the pin hole, which can be assembled by press-fitting or cold-fitting, and the assembly limit and detection of the broach guide body are completed; According to the recorded final H±0.01 dimension, grind the thickness of the side guide plate and inspect the side guide plate to ensure that the side guide plate meets the tool cavity width dimension of 30 +0.015 +0.005 after assembly and the center point of the spindle mortise and tenon broaching tool space design is projected on the symmetrical center line of the broach guide body tool cavity or within the allowable deviation range; The supercharger spindle tenon broaching tool includes a positioning body, two eye screws, a bushing, a plurality of first screws, a second positioning pin, a broach guide body, a plurality of third washers, a plurality of sixth screws, two third positioning pins, a bottom guide plate, a plurality of fourth screws, two side guide plates, a plurality of eighth screws, a right upper pressure plate, a left upper pressure plate, a plurality of third screws, a bottom plate, a plurality of seventh screws, a plurality of fourth positioning pins, a positioning ring, a plurality of fifth screws, four ferrules, four second washers, four screws, four springs, four pressure plates, four first washers, four hexagonal nuts, an indexing plate, a positioning plate, a second screw, a first positioning pin, a spindle, a tightening nut, a positioning pin and a positioning bushing; The two eye screws are respectively arranged on the positioning body; the bushing is located on the side of the positioning body; multiple first screws are respectively threadedly connected to the positioning body and respectively pass through the bushing; the second positioning pin passes through the bushing and is inserted into the positioning body; the broach guide body is located on the side of the positioning body; multiple third washers are respectively located on the side of the broach guide body; multiple sixth screws are respectively threadedly connected to the positioning body and respectively pass through the broach guide body and multiple washers; two third positioning pins respectively pass through the broach guide body and are respectively inserted into the positioning body; the bottom guide plate is located on one side of the broach guide body; multiple fourth screws are respectively threadedly connected to the bottom guide plate and respectively pass through the broach guide body; each side guide plate is fixed to the broach guide body by multiple eighth screws; the upper right pressure plate and the upper left pressure plate are both fixed to the broach guide body by multiple third screws; the bottom plate is located on the side of the positioning body; multiple seventh screws are respectively threadedly connected to the positioning body and respectively pass through the The lockhole that is formed on the locking sprocket wheel is formed in the direction of sliding, and the locking sprocket wheel is located on the top of the locking sprocket. The locking sprocket wheel is located on the top of the locking sprocket. The locking sprocket is controlled by a pin of the locking sprocket. When the locking sprocket is controlled by a pin of the locking sprocket, the locking sprocket is controlled by a pin of the locking sprocket. When the locking sprocket is controlled by a pin of the locking sprocket, the locking sprocket is controlled by a pin of the locking sprocket.

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