CN113182931B

CN113182931B - Auxiliary tool for measuring BOT value of blade tenon and using method thereof

Info

Publication number: CN113182931B
Application number: CN202110665468.2A
Authority: CN
Inventors: 唐波; 周晓伟; 邓杰; 周林; 裴聪
Original assignee: Aecc Aero Science And Technology Co ltd
Current assignee: Aecc Aero Science And Technology Co ltd
Priority date: 2021-06-16
Filing date: 2021-06-16
Publication date: 2023-01-10
Anticipated expiration: 2041-06-16
Also published as: CN113182931A

Abstract

The invention discloses a BOT value measurement auxiliary tool for a blade tenon and a use method of the BOT value measurement auxiliary tool, and belongs to the technical field of measurement tools. The utility model provides a blade tenon BOT value measurement auxiliary fixtures, includes: the measuring ball head is matched with the limiting assembly and used for clamping the standard block, and the other end of the lever is in contact fit with a mark post of a dial indicator. According to the invention, the standard block is placed above the cushion block, two sides of the standard block are respectively contacted with the measuring ball head and the limiting component, the change of the measuring ball head and the change of the dial indicator mark post are reversely synchronous, the dial indicator can be firstly calibrated through the standard block, then the standard block moving auxiliary tool is taken down, and the BOT value measurement can be directly carried out on the workpiece tenon on the machine tool, if the difference exists, the measured workpiece can be directly debugged and reprocessed, so that waste products in the debugging process are reduced, and the problem that the BOT value measurement is inconvenient to carry out on the blade tenon on the machine tool is solved.

Description

Auxiliary tool for measuring BOT value of blade tenon and using method thereof

Technical Field

The invention relates to the technical field of measuring tools, in particular to a BOT value measuring auxiliary tool for a blade tenon and a using method of the BOT value measuring auxiliary tool.

Background

The blade is a part with complex shape, multiple sizes and strict tolerance requirements, the dovetail tenon is the most common tenon structure of an aeroengine, the width value of the pressure surface of the dovetail tenon is called as BOT value for short, and is the width value of the intersection point of the inclined planes which are perpendicular to the bottom surface of the tenon and start from the bottom surface of the tenon and are fixed in height. The general measuring method is that after the part is machined, the part is detached from a machine tool and is measured on a special measuring tool or is detected by three coordinates, so that the dimension of the part is qualified. Along with the increasing degree of integrated processing of parts, the integrated processing technology is also adopted in the processing of the dovetail-shaped tenon, namely, the tenon is processed in all sizes by clamping once in a blank state. Such processing has the following disadvantages:

1. in the debugging process of the tenon, the measurement of the BOT size cannot be completed on a machine tool, and the part needs to be disassembled for measurement;

2. when the part is unqualified in measurement on the special measuring tool, the part cannot be restored and clamped on a machine tool, the repair processing cannot be realized, and the part can only be scrapped.

Because the blade belongs to the part of processing in batches, when processing the tenon at every turn, all need carry out repeated debugging, then scrap two or three, then scrap five or six as transferring the test piece more, the size just can satisfy the drawing requirement. In the course of working, when carrying out the tool changing because of cutter wearing and tearing midway, face the difficult problem of scrapping the part equally, wasted a large amount of manpowers and financial resources. Therefore, the prior art has the problem that the BOT value measurement of the blade tenon on the machine tool is inconvenient.

Disclosure of Invention

The invention aims to provide a BOT value measurement auxiliary tool for a blade tenon and a use method thereof, and aims to solve the problem that the BOT value measurement of the blade tenon on a machine tool is inconvenient in the prior art.

The technical scheme for solving the technical problems is as follows:

the utility model provides a blade tenon BOT value measurement auxiliary fixtures, includes: the device comprises a base, a cushion block, a sliding seat, a limiting component and a standard block;

the base comprises a clamping surface and a sliding surface which are arranged oppositely, and a middle hole which penetrates through the clamping surface and the sliding surface is formed in the base;

the cushion block and the limiting component are positioned on the clamping surface;

the slide sets up on the glide plane, and the rotation is connected with the lever on the slide, and the one end that the lever passed middle hole and was located the clamping face is equipped with the measurement bulb, measures the bulb and is used for the centre gripping standard block with spacing subassembly cooperation, and the other end of lever and the sighting rod contact cooperation of percentage table.

According to the invention, the standard block is placed above the cushion block, two sides of the standard block are respectively contacted with the measuring ball head and the limiting component, the change of the measuring ball head and the change of the dial indicator mark post are reversely synchronous, the dial indicator can be firstly calibrated through the standard block, then the standard block moving auxiliary tool is taken down, and the BOT value measurement can be directly carried out on the workpiece tenon on the machine tool, if the difference exists, the measured workpiece can be directly debugged and reprocessed, so that waste products in the debugging process are reduced, and the problem that the BOT value measurement is inconvenient to carry out on the blade tenon on the machine tool is solved.

Furthermore, the limiting assembly comprises two limiting blocks arranged on the base in a sliding mode, a positioning ball head matched with the measuring ball head is arranged on each limiting block, and the positioning ball head is located on the clamping surface.

The limiting block can slide along the base, so that tenons of workpieces with different specifications and sizes can be conveniently measured, and the positioning ball head can be conveniently in direct contact with the workpieces.

Furthermore, a plurality of first threaded holes are formed in the clamping surface, U-shaped sinking grooves with vertical openings are formed in the two ends of the cushion block respectively, and the U-shaped sinking grooves are connected with the first threaded holes through sunk screws respectively.

The cushion block can be connected with different first screw top blocks for position adjustment, and is used for handling workpiece tenons of different specifications and sizes. The opening mutually perpendicular of U type heavy groove can rotate under the condition of not taking off countersunk screw and take out the cushion to the convenience of use has been improved.

Furthermore, the sliding seat comprises a first side surface which is contacted with the sliding surface, a second side surface which is used for placing the dial indicator, a third side surface which is convenient for placing the lever and is arranged opposite to the second side surface, and a fourth side surface which is arranged opposite to the first side surface;

the first side surface is provided with a convex block, and the sliding surface is provided with a sliding groove matched with the convex block.

The sliding seat is provided with four working surfaces, so that the sliding seat is convenient to connect and fix with other components. And through setting up the lug with sliding tray complex for the slide can slide along the glide plane.

Furthermore, a mark post hole for placing a mark post of the dial indicator is formed in the second side face, and a clamp spring bushing is arranged in the mark post hole; the second side face is further provided with a stepped hole, a first limiting pin and a spring are arranged in the stepped hole, and the spring is abutted to the lever.

The dial indicator hole is convenient for placing a dial indicator of the dial indicator, the first limiting pin is used for limiting the rotation angle of the lever, and the spring can provide certain elastic force for the lever, so that the measuring ball head is always close to the positioning ball head under the action of the elastic force.

Furthermore, a guide groove for placing the lever is formed in the third side face, the marker rod hole is communicated with the guide groove, guide plates are further connected to two sides of the guide groove, a hinge hole matched with the guide plate is formed in the guide plate, and a rotating hole corresponding to the hinge hole is formed in the lever.

According to the dial indicator, the guide groove is used for placing the lever and is communicated with the marker post hole, so that the rotation of the lever can cause the pointer of the dial indicator to rotate through the marker post; the guide plate is used for guiding the lever, the hinge hole corresponds to the rotating hole, and the hinge hole can be connected with the rotating hole through a pin to be a fulcrum for the rotation of the lever.

Furthermore, a pin hole is formed in the side wall of the guide groove, and a second limiting pin matched with the first limiting pin is connected to the pin hole.

The invention is connected with the second limiting pin through the pin hole and is used for limiting the rotation angle of the lever by matching with the first limiting pin.

Furthermore, the sliding surface is provided with a second threaded hole, the fourth side surface is provided with an oval counter bore, and the oval counter bore is connected with the second threaded hole through a countersunk head screw.

According to the oval counter bore, the sliding seat and the base are fixed through the countersunk head screws, so that the sliding seat can be prevented from sliding along the base in the using process, and the measuring precision is prevented from being influenced.

Furthermore, the fourth side surface is also provided with an adjusting hole communicated with the mark post hole, and the adjusting hole is in threaded connection with a knurled screw in contact with the clamp spring bushing.

According to the dial indicator, the knurled screws are connected through the adjusting holes in a threaded mode, so that the tightness of the clamp spring bushing can be conveniently adjusted by controlling the engagement depth of the knurled screws, and the dial indicator post can be conveniently and better assembled and disassembled.

The use method of the auxiliary tool for measuring the BOT value of the blade tenon comprises the following steps:

s1: selecting a proper cushion block and a standard block according to the size of the processing tenon, connecting the cushion block with a proper first threaded hole, and sliding the limiting block to a proper position;

s2: tilting the measuring ball head end of the lever, and placing the standard block between the positioning ball head and the measuring ball head;

s3: shaking the standard block to make the standard block effectively contact with the positioning ball head and the measuring ball head respectively;

s4: inserting a mark post of the dial indicator into a bushing in a mark post hole, and performing zero calibration on a pointer of the dial indicator;

s5: pressing the lever through the third side surface to tilt the measuring ball head, and taking out the standard block;

s6: the auxiliary tool is held by hand to enable the dial indicator to be in a vertical state, so that the positioning ball head and the measuring ball head clamp the workpiece tenon on the machine tool clamp after machining is completed;

s7: and reading the dial indicator after the positioning ball head and the measuring ball head are effectively contacted with the tenon of the workpiece, and recording a change value.

The invention has the following beneficial effects:

(1) According to the invention, the standard block is placed above the cushion block, two sides of the standard block are respectively contacted with the measuring ball head and the limiting component, the change of the measuring ball head and the change of the dial indicator mark post are reversely synchronous, the dial indicator can be firstly calibrated through the standard block, then the standard block moving auxiliary tool is taken down, and the BOT value measurement can be directly carried out on the workpiece tenon on the machine tool, if the difference exists, the measured workpiece can be directly debugged and reprocessed, so that waste products in the debugging process are reduced, and the problem that the BOT value measurement is inconvenient to carry out on the blade tenon on the machine tool is solved.

(2) The cushion block can be connected with different first screw top blocks for position adjustment, and is used for handling workpiece tenons of different specifications and sizes. The openings of the U-shaped sunk grooves are perpendicular to each other, and the cushion block can be taken out in a rotating mode under the condition that the sunk screw is not taken down, so that the use convenience is improved.

Drawings

FIG. 1 is a schematic structural diagram of a BOT value measurement auxiliary tool for a blade tenon according to the present invention;

FIG. 2 is a top view of the BOT value measurement auxiliary tool for the blade tenon of the invention;

FIG. 3 is a side view of the BOT value measurement auxiliary tool for the blade tenon of the invention

FIG. 4 is a schematic structural diagram of a base according to the present invention;

FIG. 5 is a schematic view of a sliding slot of the base of the present invention;

FIG. 6 is a schematic view of the structure of the spacer of the present invention;

FIG. 7 is a schematic structural view of the slider according to the present invention;

FIG. 8 is a schematic illustration of the position of a second side of the slider according to the present invention;

FIG. 9 is a schematic view of the third side of the slider according to the present invention;

FIG. 10 is a cross-sectional view of the stepped bore, the first limit pin and the spring of the present invention;

FIG. 11 is a schematic view of a fourth side of the carriage according to the present invention;

FIG. 12 is a schematic view of the position of the stop assembly and base of the present invention;

FIG. 13 is a schematic diagram of a lever according to the present invention.

In the figure: 10-a base; 11-a clamping surface; 12-a sliding surface; 13-middle hole; 15-a first threaded hole; 16-a sliding groove; 17-a second threaded hole; 18-T-shaped grooves;

30-cushion block; 31-U type sink; 37-a spring; 38-a first restraint pin; 39-stepped holes;

40-a slide seat; 41-a first side; 42-a second side; 43-a third side; 44-a fourth side; 45-bumps; 46-a marker post hole; 47-a guide groove; 48-a guide plate; 49-hinge hole;

50-a spacing assembly; 51-a limiting block; 52-a locating ball head; 55-pin hole; 56-a second limit pin; 57-an oval counter bore; 58-adjusting holes; 59-knurled screws;

60-lever; 61-measuring ball head; 62-rotating the hole; 70-standard block

Detailed Description

The principles and features of this invention are described below in conjunction with the following drawings, which are set forth by way of illustration only and are not intended to limit the scope of the invention.

Examples

Referring to fig. 1, 2 and 3, a blade tenon BOT value measurement auxiliary fixtures includes: base 10, cushion block 30, slide 40, spacing subassembly 50, lever 60 and standard block 70.

Referring to fig. 1, 4 and 5, the base 10 includes a clamping surface 11 and a sliding surface 12, which are oppositely disposed, the clamping surface 11 is used for placing the position limiting assembly 50 and the standard block 70, and the sliding surface 12 is used for slidably connecting the sliding seat 40. The base 10 further has a middle hole 13, and the middle hole 13 is oval-shaped, so as to communicate the clamping surface 11 with the sliding surface 12 and facilitate the rotation of the lever 60 inside the middle hole 13.

The clamping surface 11 is provided with a plurality of groups of first threaded holes 15, so that the cushion block 30 can be conveniently fixed on the clamping surface 11 through threaded connection. The position of the cushion block 30 can be adjusted according to the specifications and the sizes of the workpiece tenon and the standard knot 70, and the cushion block 30 is connected with different first threaded holes 15 to realize adjustment.

Seted up sliding tray 16 on the glide plane 12, the contact through sliding tray 16 and slide 40 makes things convenient for slide 40 to slide along sliding tray 16 to second screw hole 17 has still been seted up to the edge of glide plane 12, and the position of slide 40 is fixed through threaded connection conveniently, avoids sliding along sliding tray 16 taking place carrying out BOT value measurement in-process slide 40, thereby causes the influence to measurement accuracy. A T-shaped groove 18 is also arranged on the side surface between the sliding surface 12 and the clamping surface 11 and is used for connecting and fixing the limiting component 50.

Referring to fig. 2 and 6, U-shaped countersunk grooves 31 are respectively formed at both ends of the spacer 30 and are connected to the first screw holes 15 by countersunk screws. The opening direction of two U type heavy grooves 31 is to perpendicular, and when cushion 30 need be changed, the accessible unscrews the countersunk head screw, makes cushion 30 rotatory to take off the opening of cushion 30 accessible U type heavy groove 31 from between countersunk head screw and the base 10, increased the convenience of whole frock in the use.

Referring to fig. 7, 8, 9 and 11, the slider 40 includes: a first side surface 41 contacted with the sliding surface 12, a second side surface 42 for placing the dial indicator, a third side surface 43 arranged opposite to the second side surface 42 and a fourth side surface 44 arranged opposite to the first side surface 41, wherein a convex block 45 is arranged at the middle position of the first side surface 41, and the size of the convex block 45 is matched with that of the sliding groove 16 so as to slide along the sliding groove 16.

A marker post hole 46 for placing a marker post of the dial indicator is formed in the second side face 42, the marker post hole 46 penetrates through to the third side face 43, and a clamp spring bushing is further arranged inside the marker post hole 46, so that the placed marker post can be conveniently and better fixed. A stepped hole 39 is further formed beside the marker post hole 46, the stepped hole 39 also penetrates through the third side surface 43, and the aperture of the part communicated with the third side surface 43 is larger than that of the part communicated with the second side surface 42.

The middle part of the third side surface 43 is provided with a guide groove 47 for placing the lever 60, and the guide groove 47 is respectively communicated with the mark post hole 46 and the stepped hole 39, so that the lever 60 is conveniently contacted with the mark post of the dial indicator, the spring 37 and the first limit pin 38 respectively. The guide plate 48 extends in the same direction as the guide groove 47.

Two oval counterbores 57 are formed in the fourth side 44, and the oval counterbores 57 respectively penetrate through the first side 41 for fixing the sliding base 40 on the base 10 by countersunk screws. The oblong counterbore 57 is oblong, and the position of the countersunk screw in the oblong counterbore 57 changes when the carriage 40 moves. Two sides of the guide slot 47 are provided with pin holes 55, the pin holes 55 further pass through an oval counter bore 57, and a second limit pin 56 is connected in the pin holes 55 and is used for matching with the first limit pin 38, so as to limit the rotation angle of the lever 60 in two directions.

Referring to fig. 10, a first stopper pin 38 and a spring 37 are disposed inside the stepped hole 39, the first stopper pin 38 is engaged with a small diameter section of the stepped hole 39 to prevent the first stopper pin 38 from sliding out of the stepped hole 39, and the first stopper pin 38 can further limit a rotation limit position of the lever 60. One end of the spring 37 abuts against the end surface of the large-diameter section of the stepped hole 39, and the other end abuts against the lever 60, so that a certain elastic force can be provided for the lever 60 to rotate in the direction approaching the limiting assembly 30 without any other external force.

Referring to fig. 12, the limiting assembly 50 includes two limiting blocks 51 slidably disposed on the base 10, the limiting blocks 51 are respectively provided with a positioning ball 52, and the two positioning ball 52 are used for limiting the standard block 57 or the workpiece tenon in direct contact. The other end of the stopper 51 can slide along the T-shaped groove 18, thereby facilitating adjustment of the distance between the stoppers 51. The parts that slide in the T-shaped slot 18 may be integrally formed with the stop 51 or may be removably connected.

Referring to fig. 13, one end of the lever 60 is provided with a measuring ball 61 for contacting both sides of the standard block 70 or the tenon of the workpiece in cooperation with the positioning ball 52, thereby facilitating the measurement of the BOT value. The lever 60 has a rotation hole 62 formed in the middle thereof, and the rotation hole 62 corresponds to the hinge hole 49, so that the lever 60 can be fixed to the slider 40 by a pin connection and can rotate along the rotation hole 62. The other end of the lever 60 is in direct contact with a mark post of the dial indicator, and when the measuring ball head 61 rotates along with the size change of the standard block 70 or the tenon of the workpiece, the dial indicator also rotates correspondingly, so that reading is carried out, and the BOT value is obtained.

s1: according to the size of the processing tenon, selecting a proper cushion block 30 and a proper standard block 70, connecting the cushion block 30 with a proper first threaded hole 15, and sliding a limiting block 51 to a proper position;

s2: tilting up the measuring bulb 61 end of the lever 60, placing the standard block 70 between the locating bulb 52 and the measuring bulb 61;

s3: shaking the standard block 70 to make effective contact with the positioning ball 52 and the measuring ball 61 respectively;

s4: inserting a mark post of the dial indicator into a lining in a mark post hole 46, and zeroing a pointer of the dial indicator;

s5: the lever 60 is pressed through the third side surface 43, so that the measuring ball head 61 tilts, and then the standard block 70 is taken out;

s6: the dial indicator is in a vertical state by holding the auxiliary tool by hand, and the positioning ball head 52 and the measuring ball head 61 clamp the tenon of the workpiece which is machined on the machine tool clamp;

s7: and after the positioning ball head 52 and the measuring ball head 61 are ensured to be effectively contacted with the tenon of the workpiece, reading the dial indicator, and recording a change value.

According to the invention, the standard block 70 is placed above the cushion block 30, two sides of the standard block 70 are respectively contacted with the measuring ball head 61 and the positioning ball head 52, the change of the measuring ball head 61 and the change of the dial indicator mark rod are reversely synchronous, the dial indicator can be calibrated through the standard block 70, then the auxiliary tool for moving the standard block 70 is taken down, and the BOT value measurement reading can be directly carried out on the tenon head of the workpiece on the machine tool, if the difference exists, the measurement workpiece can be directly debugged and reprocessed, so that the waste products in the debugging process are reduced, and the problem that the BOT value measurement is inconvenient to carry out on the tenon head of the blade on the machine tool is solved.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. The utility model provides a blade tenon BOT value measurement auxiliary fixtures which characterized in that includes: the device comprises a base (10), a cushion block (30), a sliding seat (40), a limiting component (50) and a standard block (70);

the base (10) comprises a clamping surface (11) and a sliding surface (12) which are oppositely arranged, and the base (10) is provided with a middle hole (13) which penetrates through the clamping surface (11) and the sliding surface (12);

the cushion block (30) and the limiting assembly (50) are positioned on the clamping surface (11);

the sliding seat (40) is arranged on the sliding surface (12), a lever (60) is connected to the sliding seat (40) in a rotating mode, the lever (60) penetrates through the middle hole (13) and is provided with a measuring ball head (61) at one end, located on the clamping surface (11), the measuring ball head (61) is matched with the limiting component (50) to clamp the standard block (70), and the other end of the lever (60) is in contact fit with a mark post of a dial indicator;

the limiting assembly (50) comprises two limiting blocks (51) which are arranged on the base (10) in a sliding mode, a positioning ball head (52) matched with the measuring ball head (61) is arranged on each limiting block (51), and the positioning ball head (52) is located on the clamping surface (11);

the clamping surface (11) is provided with a plurality of first threaded holes (15), two ends of the cushion block (30) are respectively provided with a U-shaped sunken groove (31) with vertical openings, and the U-shaped sunken grooves (31) are respectively connected with the first threaded holes (15) through countersunk screws;

the sliding seat (40) comprises a first side surface (41) contacted with the sliding surface (12), a second side surface (42) used for placing a dial indicator, a third side surface (43) used for placing the lever (60) and arranged opposite to the second side surface (42), and a fourth side surface (44) arranged opposite to the first side surface (41);

the first side surface (41) is provided with a convex block (45), and the sliding surface (12) is provided with a sliding groove (16) matched with the convex block (45);

a mark post hole (46) for placing a mark post of a dial indicator is formed in the second side surface (42), and a clamp spring bushing is arranged in the mark post hole (46); the second side face (42) is further provided with a stepped hole (39), a first limiting pin (38) and a spring (37) are arranged in the stepped hole (39), and the spring (37) is abutted to the lever (60);

the third side face (43) is provided with a guide groove (47) used for placing the lever (60), the marker post hole (46) is communicated with the guide groove (47), two sides of the guide groove (47) are further connected with guide plates (48), the guide plates (48) are provided with hinge holes (49) which are matched with each other, and the lever (60) is provided with rotating holes (62) corresponding to the hinge holes (49).

2. The auxiliary tool for measuring the BOT value of the blade tenon of claim 1, wherein a pin hole (55) is formed in a side wall of the guide groove (47), and a second limit pin (56) matched with the first limit pin (38) is connected to the pin hole (55).

3. The auxiliary tool for measuring the BOT value of the blade tenon of claim 2, wherein the sliding surface (12) is provided with a second threaded hole (17), the fourth side surface (44) is provided with an oval counter bore (57), and the oval counter bore (57) is connected with the second threaded hole (17) through a counter screw.

4. The auxiliary tool for measuring the BOT value of the blade tenon as claimed in claim 3, wherein the fourth side surface (44) is further provided with an adjusting hole (58) communicated with the mark rod hole (46), and the adjusting hole (58) is in threaded connection with a knurled screw (59) in contact with the clamp spring bushing.

5. A use method of a blade tenon BOT value measurement auxiliary tool is characterized in that the blade tenon BOT value measurement auxiliary tool of any one of claims 1 to 4 is adopted, and the method comprises the following steps:

s1: according to the size of the processing tenon, selecting a proper cushion block (30) and a proper standard block (70), connecting the cushion block (30) with a proper first threaded hole (15), and sliding the limiting block (51) to a proper position;

s2: tilting the end of the measuring ball head (61) of the lever (60), and placing the standard block (70) between the positioning ball head (52) and the measuring ball head (61);

s3: shaking the standard block (70) into operative contact with the locating ball head (52) and the measuring ball head (61), respectively;

s4: inserting a mark post of the dial indicator into a lining in the mark post hole (46), and performing zero calibration on a pointer of the dial indicator;

s5: the lever (60) is pressed through the third side face (43), so that the measuring ball head (61) is tilted, and then the standard block (70) is taken out;

s6: the dial indicator is in a vertical state by holding the auxiliary tool by hand, and the positioning ball head (52) and the measuring ball head (61) clamp the tenon of the workpiece which is machined on the machine tool clamp;

s7: and after the positioning ball head (52) and the measuring ball head (61) are ensured to be effectively contacted with the tenon of the workpiece, reading the dial indicator, and recording a change value.