CN116900362A

CN116900362A - Numerical control boring machine for machining knuckle taper holes

Info

Publication number: CN116900362A
Application number: CN202311009410.8A
Authority: CN
Inventors: 陈功文; 伍福生; 邱旭东; 黄明因
Original assignee: Jiangxi Qinrui Intelligent Technology Co ltd
Current assignee: Jiangxi Qinrui Intelligent Technology Co ltd
Priority date: 2023-08-11
Filing date: 2023-08-11
Publication date: 2023-10-20

Abstract

The application relates to a numerical control boring machine, in particular to a numerical control boring machine for machining a knuckle taper hole. The application provides a stable numerical control boring machine for machining a knuckle taper hole. The utility model provides a numerical control boring machine of processing knuckle taper hole, includes support, first cylinder, electric drill, rotary mechanism and fixed establishment, installs first cylinder in the middle of the support top, and the end connection of first cylinder telescopic link has the electric drill, is equipped with rotary mechanism on the support, is equipped with fixed establishment between the telescopic link of support and first cylinder. When the electric drill moves downwards, the driving sliding rod clamps the first rotating frame leftwards, so that the first rotating frame cannot rotate, meanwhile, the first clamping block is driven to clamp the first rotating frame leftwards, so that the first rotating frame cannot move up and down, the workpiece is fixed, random movement of the workpiece during drilling is avoided, and the stability of drilling is improved.

Description

Numerical control boring machine for machining knuckle taper holes

Technical Field

The application relates to a numerical control boring machine, in particular to a numerical control boring machine for machining a knuckle taper hole.

Background

When the taper hole processing is carried out on the knuckle, the universal joint is required to be placed on a numerical control boring machine, the knuckle is fixed during processing, then the knuckle is turned over, and the taper hole processing can be carried out on both sides of the knuckle.

The patent with the publication number of CN209919394U discloses a numerical control boring machine for machining a knuckle taper hole, belongs to the technical field of numerical control boring machines, and comprises a workbench, the top of workstation is provided with the mounting groove, the interior bottom wall rectangular array of mounting groove is provided with four guide posts, and sliding fit is provided with the lifter plate on four guide posts, the bottom of lifter plate is provided with down elevating gear, the top center department of lifter plate is fixed with elevating gear, the upper end of upper elevating gear is fixed with the layer board, top one side of lifter plate is fixed with the motor cabinet, gear motor is installed at the top of motor cabinet, gear motor's output is fixed with the cylinder block, install pneumatic clamp on the cylinder block, the top of workstation is provided with drilling machine.

After the steering knuckle is driven to turn by the speed reducing motor, the closed output shaft of the speed reducing motor can still rotate under force, so that the steering knuckle is easy to rotate under force, and a downward force can be applied to the steering knuckle when a drill bit processes a taper hole downwards, so that the steering knuckle is unstable in processing, drilling is affected, and the stable steering knuckle taper hole numerical control boring machine is provided.

Disclosure of Invention

In order to overcome the defect of instability in the process of machining the knuckle by the existing device, the application provides a stable numerical control boring machine for machining the taper hole of the knuckle.

The utility model provides a numerical control boring machine of processing knuckle taper hole, includes support, first cylinder, electric drill, rotary mechanism and fixed establishment, installs first cylinder in the middle of the support top, and the end connection of first cylinder telescopic link has the electric drill, is equipped with rotary mechanism on the support, is equipped with fixed establishment between the telescopic link of support and first cylinder.

As the improvement of above-mentioned scheme, rotary mechanism is including second cylinder, first slider, first revolving rack, the second slider, first gear, first rack, slide and first spring, the second cylinder is installed on support right side upper portion, the support left and right sides is sliding type respectively and is connected with second slider and first slider, the rotation type is connected with first revolving rack between first slider and the second slider, first revolving rack right side is connected with first gear, be connected with first rack about the support right side, first rack and first gear engagement, first revolving rack both sides all are sliding type is connected with the slide, both sides all around the slide have first spring, the inside and outside both ends of first spring are connected with slide and first revolving rack respectively.

As the improvement of above-mentioned scheme, fixed establishment is including first dead lever, first wedge plate, the expansion plate, the slide bar, the second spring, first fixture block and second fixture block, be connected with first dead lever on the expansion lever of first cylinder, support upper portion front side slidingtype is connected with the slide bar, the slide bar moves left and blocks first revolving rack, it has the second spring to wind on the slide bar, both ends are controlled with slide bar and leg joint respectively about the second spring, the slide bar left end is connected with first wedge plate, first wedge plate and first dead lever extrusion fit, first wedge plate bottom right side is connected with the expansion plate, slide bar right part intermediate junction has first fixture block, first fixture block moves left and blocks into first revolving rack, slide bar right side downside is connected with the second fixture block, second fixture block moves left and blocks into first revolving rack.

As the improvement of above-mentioned scheme, still including protection machanism, protection machanism is including second revolving rack, guard plate, second gear and second rack, and first cylinder top rotation is connected with the second revolving rack, and second revolving rack top is connected with the guard plate, and second revolving rack lower part is connected with the second gear, is connected with the second rack through L shape pole on the slide bar, second rack and second gear engagement.

As the improvement of above-mentioned scheme, still including clearance mechanism, clearance mechanism is including second dead lever, third spring and second wedge plate, and support left side lower part is connected with the second dead lever, and second dead lever front portion slidingtype is connected with the second wedge plate, and second wedge plate rear end is supported by the guard plate, winds on the second dead lever and has the third spring, and both ends are connected with second wedge plate and second dead lever respectively around the third spring.

As the improvement of above-mentioned scheme, still including positioning mechanism, positioning mechanism is including third dead lever, cardboard and fourth spring, and symmetrical about first revolving rack left part is connected with the third dead lever, and second slider upper portion slidingtype is connected with the cardboard, cardboard right side and third dead lever contact, winds on the cardboard and has the fourth spring, and both ends are connected with second slider and cardboard respectively about the fourth spring.

The electric drill is characterized by further comprising a pushing mechanism, the pushing mechanism comprises a third rack, a third gear, a fourth rack and a third wedge plate, the right upper part of the support is connected with the third rack and the fourth rack in a sliding mode, the right side of the shell of the electric drill is connected with the bottom end of the third rack through a cross rod, the right upper part of the support is rotatably connected with the third gear, the third gear is located between the third rack and the fourth rack, the third rack and the fourth rack are meshed with the third gear, the bottom end of the fourth rack is connected with the third wedge plate, the third wedge plate moves downwards to be in contact with the sliding plate, and the sliding plate is extruded by the third wedge plate to slide outwards.

As an improvement of the scheme, two glass windows are arranged on the protection plate.

The application has the following beneficial effects:

1. when the electric drill moves downwards, the driving sliding rod clamps the first rotating frame leftwards, so that the first rotating frame cannot rotate, meanwhile, the first clamping block is driven to clamp the first rotating frame leftwards, so that the first rotating frame cannot move up and down, the workpiece is fixed, random movement of the workpiece during drilling is avoided, and the stability of drilling is improved.

2. During processing, the protection plate keeps off in the front, avoids the waste material that splashes to hurt the people when drilling, plays the protection effect, improves the security of processing.

3. When the protection plate is turned to the rear, the protection plate pushes the second wedge-shaped plate to slide forwards, so that the second wedge-shaped plate can automatically push out waste materials generated during processing forwards.

4. The first rotating frame which is turned over can be positioned through the third fixing rod, and the rotating angle of the third fixing rod can be judged to be one hundred eighty degrees.

5. When the electric drill moves upwards, the third wedge plate moves downwards to be in contact with the sliding plate, and then the sliding plate is extruded to slide outwards, so that people can conveniently take and put workpieces.

Drawings

Fig. 1 is a schematic perspective view of the present application.

Fig. 2 is a schematic view of a partial perspective structure of the present application.

Fig. 3 is a schematic perspective view of a rotary mechanism according to the present application.

Fig. 4 is a schematic view of a part of a rotating mechanism of the present application.

Fig. 5 is a schematic perspective view of a first view of the fixing mechanism of the present application.

Fig. 6 is a schematic perspective view of a second view of the fixing mechanism of the present application.

Fig. 7 is a schematic perspective view of a protection mechanism of the present application.

Fig. 8 is a schematic view of a part of a perspective structure of the protection mechanism of the present application.

Fig. 9 is a schematic perspective view of a cleaning mechanism according to the present application.

Fig. 10 is a schematic perspective view of a positioning mechanism according to the present application.

Fig. 11 is a schematic view of a part of a perspective structure of a positioning mechanism of the present application.

Fig. 12 is a schematic perspective view of the push-away mechanism of the present application.

Reference numerals in the figures: 1. the support, 2, first cylinder, 3, electric drill, 4, rotary mechanism, 41, second cylinder, 42, first slider, 43, first revolving rack, 44, second slider, 45, first gear, 46, first rack, 47, slide, 48, first spring, 5, fixed mechanism, 51, first fixed lever, 52, first wedge plate, 53, expansion plate, 54, slide bar, 55, second spring, 56, first fixture block, 57, second fixture block, 6, guard mechanism, 61, second revolving rack, 62, guard plate, 63, second gear, 64, second rack, 7, cleaning mechanism, 71, second fixed lever, 72, third spring, 73, second wedge plate, 8, positioning mechanism, 81, third fixed lever, 82, clamp plate, 83, fourth spring, 9, push mechanism, 91, third wedge plate, 92, third gear, 93, fourth rack, 94, third wedge plate.

Detailed Description

The above-described aspects are further described below in conjunction with specific embodiments. It should be understood that these examples are illustrative of the present application and are not intended to limit the scope of the present application. The implementation conditions used in the examples may be further adjusted according to the conditions of the specific manufacturer, and the implementation conditions not specified are generally those in routine experiments.

Example 1

A numerical control boring machine for machining taper holes of steering knuckles is shown in fig. 1 and 2, and comprises a support 1, a first cylinder 2, an electric drill 3, a rotating mechanism 4 and a fixing mechanism 5, wherein the first cylinder 2 is arranged in the middle of the top of the support 1 through bolts, the electric drill 3 is connected to the end part of a telescopic rod of the first cylinder 2, the rotating mechanism 4 is arranged on the support 1, and the fixing mechanism 5 is arranged between the support 1 and the telescopic rod of the first cylinder 2.

As shown in fig. 1, 3 and 4, the second cylinder 41, the first slider 42, the first rotating frame 43, the second slider 44, the first gear 45, the first rack 46, the slide plate 47 and the first spring 48 form the rotating mechanism 4, the second cylinder 41 is mounted on the upper right side of the bracket 1, the second slider 44 is slidably connected on the left side of the bracket 1, the first slider 42 is slidably connected on the right side of the bracket 1, the first rotating frame 43 is rotatably connected between the first slider 42 and the second slider 44, the first gear 45 is connected on the right side of the first rotating frame 43, the first rack 46 is connected between the upper right side and the lower right side of the bracket 1, the first rack 46 is meshed with the first gear 45, the slide plate 47 is slidably connected on the left side and the right side of the first rotating frame 43, the slide plate 47 is wound with the first spring 48 on the front and the rear sides, and the inner and outer ends of the first spring 48 are respectively connected with the slide plate 47 and the first rotating frame 43.

As shown in fig. 1, 5 and 6, the fixing mechanism 5 is formed by a first fixing rod 51, a first wedge plate 52, a telescopic plate 53, a sliding rod 54, a second spring 55, a first clamping block 56 and a second clamping block 57, the first fixing rod 51 is connected to the telescopic rod of the first cylinder 2, the sliding rod 54 is slidably connected to the front side of the upper portion of the support 1, the sliding rod 54 moves leftwards to clamp the first rotating frame 43, the second spring 55 is wound on the sliding rod 54, the left end and the right end of the second spring 55 are respectively connected with the sliding rod 54 and the support 1, the first wedge plate 52 is connected to the left end of the sliding rod 54, the first wedge plate 52 is in press fit with the first fixing rod 51, the telescopic plate 53 is connected to the right side of the bottom of the first wedge plate 52, the first clamping block 56 is connected to the middle of the right portion of the sliding rod 54, the first clamping block 56 moves leftwards to clamp the first rotating frame 43, the second clamping block 57 is connected to the right lower side of the sliding rod 54, and the second clamping block 57 moves leftwards to clamp the second clamping block 57 into the first rotating frame 43.

When the taper hole is required to be machined on the steering knuckle, the steering knuckle can be placed on the numerical control boring machine for machining, people pull the sliding plate 47 outwards, the first spring 48 deforms, after a workpiece to be machined is clamped on the first rotating frame 43, the sliding plate 47 is loosened, the first spring 48 resets to drive the sliding plate 47 to move inwards to press the workpiece, then the electric drill 3 is started and the telescopic rod of the first air cylinder 2 is controlled to extend downwards, the electric drill 3 is driven to move downwards to drill one surface of the workpiece, the electric drill 3 moves downwards to drive the first fixing rod 51 to move downwards, so that the first wedge plate 52 is extruded to move leftwards, the sliding rod 54 is driven to clamp the first rotating frame 43 leftwards, the second spring 55 deforms, the first rotating frame 43 cannot rotate, the first clamping block 56 is driven to clamp the first rotating frame 43 leftwards, the first rotating frame 43 cannot move upwards and downwards, so that the workpiece is fixed, the workpiece is prevented from moving randomly during drilling, the stability of drilling is improved, the electric drill 3 continues to drill downwards, at this time, the first fixed rod 51 moves downwards to contact with the telescopic plate 53 and drive the telescopic plate 53 to extend downwards, after drilling is completed, the telescopic rod of the first air cylinder 2 is controlled to shorten upwards and reset, the first air cylinder 2 drives the electric drill 3 to move upwards, thereby driving the first fixed rod 51 to move upwards, the first fixed rod 51 moves upwards to separate from the telescopic plate 53 and drive the telescopic plate 53 to shorten upwards, the second spring 55 resets and drives the sliding rod 54 to move rightwards, thereby driving the first clamping block 56 to separate from the first rotating frame 43, the sliding rod 54 and the first clamping block 56 are not clamped on the first rotating frame 43 any more, the telescopic rod of the second air cylinder 41 is controlled to extend downwards, the first sliding block 42 is driven to slide downwards, and thus the first rotating frame 43, the second sliding block 44, the first gear 45, the sliding plate 47 and the first spring 48 are driven to move downwards integrally, under the action of the first rack 46, the first gear 45 drives the first rotating frame 43 to rotate, when the first rotating frame 43 drives the sliding plate 47 and the first spring 48 to turn over for one hundred eighty degrees, the telescopic rod of the second cylinder 41 is controlled to stop, then the telescopic rod of the first cylinder 2 is controlled to extend downwards, so that the electric drill 3 is driven to drill the reverse side of a workpiece downwards, at the moment, under the action of the first fixing rod 51 and the first wedge plate 52, the sliding rod 54 and the second clamping block 57 clamp the first rotating frame 43 leftwards, then the telescopic rod of the first cylinder 2 is controlled to shorten upwards for resetting, so that the electric drill 3 moves upwards, at the moment, the sliding rod 54 and the second clamping block 57 loosen the first rotating frame 43, and finally the telescopic rod of the second cylinder 41 shortens upwards for resetting, the first rotating frame 43, the second sliding block 44, the first gear 45, the sliding plate 47 and the first spring 48 integrally also move upwards, and under the action of the first rack 46, the first gear 45 drives the first rotating frame 43 to reversely rotate for resetting, and when the workpiece with holes needs to be removed, people pull the sliding plate 47 outwards.

Example 2

On the basis of embodiment 1, as shown in fig. 1, 7 and 8, the device further comprises a protection mechanism 6, a second rotating frame 61, a protection plate 62, a second gear 63 and a second rack 64 form the protection mechanism 6, the second rotating frame 61 is rotatably connected to the top of the first cylinder 2, the protection plate 62 is connected to the top of the second rotating frame 61, two glass windows are arranged on the protection plate 62, the second gear 63 is connected to the lower part of the second rotating frame 61, the second rack 64 is connected to the sliding rod 54 through an L-shaped rod, and the second rack 64 is meshed with the second gear 63.

When the slide bar 54 moves leftwards, the slide bar 54 drives the second rack 64 to move leftwards, so that the second gear 63 is driven to rotate anticlockwise by one hundred and eighty degrees, the second rotating frame 61 is driven to rotate anticlockwise by one hundred and eighty degrees, the protection plate 62 is blocked in front, waste splashed during drilling is prevented from injuring workers, the protection effect is achieved, machining safety is improved, people can observe machining conditions through glass windows, when the slide bar 54 moves rightwards, the slide bar 54 drives the second gear 63 to rotate clockwise by one hundred and eighty degrees through the second rack 64, the second gear 63 drives the protection plate 62 to rotate clockwise by one hundred and eighty degrees through the second rotating frame 61, and at the moment, the protection plate 62 is not blocked in front any more, so that people can conveniently pick and place workpieces in front.

As shown in fig. 1 and 9, the cleaning mechanism 7 is further included, the second fixing rod 71, the third spring 72 and the second wedge plate 73 form the cleaning mechanism 7, the second fixing rod 71 is connected to the left lower portion of the support 1, the second wedge plate 73 is slidably connected to the front portion of the second fixing rod 71, the rear end of the second wedge plate 73 is propped against the protection plate 62, the third spring 72 is wound on the second fixing rod 71, and the front end and the rear end of the third spring 72 are respectively connected with the second wedge plate 73 and the second fixing rod 71.

When the protection plate 62 is turned to the front, the protection plate 62 does not prop against the second wedge plate 73 any more, the third spring 72 resets to drive the second wedge plate 73 to slide backwards, when the protection plate 62 is turned to the rear, the protection plate 62 pushes the second wedge plate 73 to slide forwards, the third spring 72 deforms, and therefore the second wedge plate 73 can automatically push out the waste generated during processing forwards.

As shown in fig. 1, 10 and 11, the device further comprises a positioning mechanism 8, wherein a third fixing rod 81, a clamping plate 82 and a fourth spring 83 form the positioning mechanism 8, the left part of the first rotating frame 43 is symmetrically connected with the third fixing rod 81 up and down, the clamping plate 82 is slidably connected to the upper part of the second sliding block 44, the right side of the clamping plate 82 is contacted with the third fixing rod 81, the fourth spring 83 is wound on the clamping plate 82, and the left end and the right end of the fourth spring 83 are respectively connected with the second sliding block 44 and the clamping plate 82.

The third fixing rod 81 on the upper side can be clamped through the clamping plate 82, when the first rotating frame 43 rotates, the first rotating frame 43 drives the third fixing rod 81 to rotate, the clamping plate 82 is extruded by the third fixing rod 81 on the upper side to slide leftwards, the fourth spring 83 is compressed, when the third fixing rod 81 on the upper side is separated from the clamping plate 82, the clamping plate 82 is driven to slide rightwards by reset of the fourth spring 83, then the third fixing rod 81 on the lower side rotates to the upper side, the clamping plate 82 is extruded leftwards again, when the third fixing rod 81 on the lower side rotates upwards to the central depression of the clamping plate 82, the clamping plate 82 is driven by reset of the fourth spring 83 to clamp the third fixing rod 81, and therefore the first rotating frame 43 which is overturned can be positioned through the third fixing rod 81, and the rotating angle of the third fixing rod 81 can be judged to be one hundred eighty degrees.

As shown in fig. 1 and 12, the electric drill further comprises a pushing mechanism 9, the pushing mechanism 9 is formed by a third rack 91, a third gear 92, a fourth rack 93 and a third wedge plate 94, the third rack 91 and the fourth rack 93 are both connected to the right upper portion of the support 1 in a sliding manner, the right side of the shell of the electric drill 3 is connected with the bottom end of the third rack 91 through a cross rod, the third gear 92 is rotatably connected to the right upper portion of the support 1, the third rack 91 and the fourth rack 93 are both meshed with the third gear 92, the third gear 92 is located between the third rack 91 and the fourth rack 93, the third wedge plate 94 is connected to the bottom end of the fourth rack 93, the third wedge plate 94 moves downwards to be in contact with the sliding plate 47, and the third wedge plate 94 extrudes the sliding plate 47 to slide outwards.

When electric drill 3 upwards moves, electric drill 3 drives third rack 91 upwards to move, and third rack 91 passes through third gear 92 and drives fourth rack 93 to move down to drive third wedge plate 94 to move down, third wedge plate 94 moves down and contacts with slide 47, and then extrudes slide 47 outwards to slide, and the people of being convenient for get and put the work piece, need not manual pull open slide 47.

Finally, it should be noted that: the foregoing description is only illustrative of the preferred embodiments of the present application, and although the present application has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements or changes may be made without departing from the spirit and principles of the present application.

Claims

1. The utility model provides a numerical control boring machine for machining knuckle taper hole, including support (1), first cylinder (2) and electric drill (3), install first cylinder (2) in the middle of support (1) top, the end connection of first cylinder (2) telescopic link has electric drill (3), characterized by still including rotary mechanism (4) and fixed establishment (5), is equipped with rotary mechanism (4) on support (1), is equipped with fixed establishment (5) between the telescopic link of support (1) and first cylinder (2).

2. The numerical control boring machine for machining taper holes of steering knuckles according to claim 1, wherein the rotating mechanism (4) comprises a second cylinder (41), a first sliding block (42), a first rotating frame (43), a second sliding block (44), a first gear (45), a first rack (46), a sliding plate (47) and a first spring (48), the second cylinder (41) is installed on the upper right side of the support (1), the second sliding block (44) and the first sliding block (42) are respectively connected on the left side and the right side of the support (1) in a sliding mode, the first rotating frame (43) is rotatably connected between the first sliding block (42) and the second sliding block (44), the first gear (45) is connected on the right side of the first rotating frame (43), the first rack (46) is meshed with the first gear (45), the sliding plate (47) is respectively connected on the left side and the right side of the first rotating frame (43), the first spring (48) is wound around the front and the rear side of the sliding plate (47), and the first spring (48) is respectively connected with the inner side and the outer side of the first rotating frame (47).

3. The numerical control boring machine for machining taper holes of steering knuckles according to claim 2, wherein the fixing mechanism (5) comprises a first fixing rod (51), a first wedge plate (52), a telescopic plate (53), a sliding rod (54), a second spring (55), a first clamping block (56) and a second clamping block (57), the first fixing rod (51) is connected to the telescopic rod of the first cylinder (2), a sliding rod (54) is connected to the front side of the upper portion of the support (1) in a sliding mode, the sliding rod (54) moves leftwards to clamp the first rotating frame (43), the second spring (55) is wound on the sliding rod (54), the left end and the right end of the second spring (55) are respectively connected with the sliding rod (54) and the support (1), the left end of the sliding rod (54) is connected with the first wedge plate (52), the first wedge plate (52) is in press fit with the first fixing rod (51), the right side of the bottom of the first wedge plate (52) is connected with the telescopic plate (53), the first clamping block (56) is connected to the middle of the right side of the sliding rod (54), the first clamping block (56) moves leftwards to clamp the first rotating frame (43), and the second clamping block (57) moves leftwards to the first rotating frame (57).

4. A numerical control boring machine for machining taper holes of steering knuckles according to claim 3, further comprising a protection mechanism (6), wherein the protection mechanism (6) comprises a second rotating frame (61), a protection plate (62), a second gear (63) and a second rack (64), the top of the first cylinder (2) is rotatably connected with the second rotating frame (61), the top of the second rotating frame (61) is connected with the protection plate (62), the lower part of the second rotating frame (61) is connected with the second gear (63), the slide bar (54) is connected with the second rack (64) through an L-shaped rod, and the second rack (64) is meshed with the second gear (63).

5. The numerical control boring machine for machining taper holes of steering knuckles according to claim 4, further comprising a cleaning mechanism (7), wherein the cleaning mechanism (7) comprises a second fixing rod (71), a third spring (72) and a second wedge plate (73), the second fixing rod (71) is connected to the left lower portion of the support (1), the second wedge plate (73) is connected to the front portion of the second fixing rod (71) in a sliding mode, the rear end of the second wedge plate (73) is propped against by the protection plate (62), the third spring (72) is wound on the second fixing rod (71), and the front end and the rear end of the third spring (72) are respectively connected with the second wedge plate (73) and the second fixing rod (71).

6. The numerical control boring machine for machining taper holes of steering knuckles according to claim 5, further comprising a positioning mechanism (8), wherein the positioning mechanism (8) comprises a third fixing rod (81), a clamping plate (82) and a fourth spring (83), the third fixing rod (81) is symmetrically connected to the left part of the first rotating frame (43) up and down, the clamping plate (82) is slidably connected to the upper part of the second sliding block (44), the right side of the clamping plate (82) is in contact with the third fixing rod (81), the fourth spring (83) is wound on the clamping plate (82), and the left end and the right end of the fourth spring (83) are respectively connected with the second sliding block (44) and the clamping plate (82).

7. The numerical control boring machine for machining taper holes of steering knuckles according to claim 6, further comprising a pushing mechanism (9), wherein the pushing mechanism (9) comprises a third rack (91), a third gear (92), a fourth rack (93) and a third wedge plate (94), the right upper part of the support (1) is slidably connected with the third rack (91) and the fourth rack (93), the right side of the shell of the electric drill (3) is connected with the bottom end of the third rack (91) through a cross rod, the right upper part of the support (1) is rotatably connected with the third gear (92), the third gear (92) is positioned between the third rack (91) and the fourth rack (93), the third rack (91) and the fourth rack (93) are meshed with the third gear (92), the bottom end of the fourth rack (93) is connected with the third wedge plate (94), the third wedge plate (94) moves downwards to be in contact with the sliding plate (47), and the third wedge plate (94) extrudes the sliding plate (47) outwards.

8. A numerical control boring machine for machining taper holes of steering knuckles as claimed in claim 4, wherein two glass windows are provided on the guard plate (62).