CN111775107A

CN111775107A - Press-fitting tool and press-fitting method for camshaft gear and signal panel

Info

Publication number: CN111775107A
Application number: CN202010639247.3A
Authority: CN
Inventors: 梁振杰
Original assignee: Guangxi Yuchai Machinery Co Ltd
Current assignee: Guangxi Yuchai Machinery Co Ltd
Priority date: 2020-07-06
Filing date: 2020-07-06
Publication date: 2020-10-16
Anticipated expiration: 2040-07-06
Also published as: CN111775107B

Abstract

The invention discloses a press mounting tool and a press mounting method for a camshaft gear and a signal panel, which comprises the following steps: positioning the camshaft in the axial direction, the radial direction and the circumferential direction; rotating a hand wheel of the gear ring shaft to align the movable pin of the rack with the guide pin; pulling the handle to enable the positioning shaft sliding block component to slide backwards to make room for the installation space of the camshaft gear; sleeving a camshaft gear on a positioning shaft, and simultaneously inserting a guide pin into a phase positioning hole of the camshaft gear from one side; the end face of the positioning shaft is attached to the end face of the camshaft again, and the circumferential positioning pin is inserted into the circumferential positioning hole again; rotating a hand wheel of the gear ring shaft to enable a rack movable pin to be inserted from the other side of the phase positioning hole; the pressing sleeve component applies pressing force to the end face of the camshaft gear to press and mount the camshaft gear in place. Wherein, the guide pin and the rack movable pin are always inserted into the phase positioning hole from two sides in the press fitting process. The press fitting method can ensure accurate phase positioning of the cam shaft gear.

Description

Press-fitting tool and press-fitting method for camshaft gear and signal panel

Technical Field

The invention relates to the field of engine manufacturing, in particular to a press-fitting tool and a press-fitting method capable of ensuring accurate phase positioning of a camshaft gear and a signal panel.

Background

At present, a camshaft is generally vertically placed by pressing (shrink-fit) a camshaft gear and a signal panel at the end part of the camshaft, positioning pins fixed on a tool frame are used for positioning (phase positioning) the camshaft gear and the signal panel, and a press machine is used for pressing in or manually pressing in the camshaft gear and the signal panel to perform shrink-fit.

Although the structure of the press-fitting tool in the prior art is simple, the diameter of the positioning pin is reduced when the tool is designed because the diameter of the positioning pin fixed on the tool frame covers the camshaft gear and the signal panel product of all pin hole positions, so that the uniformity of pin hole phase positioning in the process of pressing (sleeving) the camshaft gear and the signal panel product is poor, and the phenomenon of large phase deviation occurs.

In order to improve the defects, an additional more reliable structure is needed, and the technical problem to be solved by the proposal of the application is to design a device for pressing and assembling the camshaft gear and the signal panel, so as to ensure the phase positioning consistency of the pin hole in the process of pressing (sleeving) the camshaft gear and the signal panel product.

The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person skilled in the art.

Disclosure of Invention

The invention aims to provide a press-fitting tool and a press-fitting method for a camshaft gear and a signal disc, which can ensure that a rack movable pin and a guide pin are inserted from two ends of a phase positioning hole of the camshaft gear simultaneously in the whole press-fitting process under the condition that the axial positioning, the radial positioning and the circumferential positioning of the camshaft are determined, and can ensure the accurate phase positioning of the camshaft gear.

In order to achieve the purpose, the invention provides a press-fitting tool for a camshaft gear and a signal disc, which comprises a guide sliding base assembly, a camshaft positioning block assembly, a camshaft radial pressing assembly and a positioning shaft sliding block assembly.

The guide sliding base component comprises a base, a tightening bolt, a first guide sliding block and a second guide sliding block. The jacking bolt is arranged at one end of the base, and the central axis of the jacking bolt is superposed with the overlooking longitudinal central line of the base; the first guide sliding block and the second guide sliding block are arranged at the other end of the base, the first guide sliding block and the second guide sliding block are arranged oppositely, a guide sliding groove is formed between the first guide sliding block and the second guide sliding block, and the longitudinal center line of the guide sliding groove is superposed with the overlooking longitudinal center line of the base;

the camshaft positioning block assembly is arranged between the tightening bolt and the first guide sliding block and the second guide sliding block and comprises a V-shaped positioning block, an end limiting plate and a rack movable pin. The V-shaped positioning block is provided with two V-shaped positioning notches which are symmetrically arranged, and the central connecting line of the two V-shaped positioning notches is superposed with the overlooking longitudinal central line of the base; the end limiting plate is arranged on one side of the V-shaped positioning block, which is far away from the puller bolt; the rack movable pin and the central connecting line of the two V-shaped positioning notches are arranged on one side of the V-shaped positioning block in parallel, and the rack movable pin can longitudinally and horizontally move along the central axis of the rack movable pin;

the radial camshaft pressing component is arranged on the other side of the V-shaped positioning block and is perpendicular to the upper plane of the base, and comprises a radial pressing block with a through hole; and

the positioning shaft sliding block assembly is arranged in the guide sliding groove and can move horizontally in the longitudinal direction of the guide sliding groove, and the positioning shaft sliding block assembly comprises a positioning shaft, a circumferential positioning pin and a guide pin. The positioning shaft is arranged at one end of the positioning shaft sliding block assembly, the central axis of the positioning shaft is overlapped with the overlooking longitudinal central line of the base, and the end face of the positioning shaft faces the end limiting plate; the circumferential positioning pin is arranged on the end surface of the positioning shaft, and the end part of the circumferential positioning pin is provided with a pin head conical part; the central axis of the guide pin is arranged on one side of the positioning shaft in parallel with the central axis of the positioning shaft, and the central axis of the guide pin is coaxial with the central axis of the rack movable pin

Wherein the location axle inserts the centre bore of camshaft gear, and rack movable pin and uide pin insert simultaneously from the both ends of camshaft gear's phase position hole, can guarantee that the phase position of camshaft gear is fixed a position accurately.

In a preferred embodiment, the camshaft positioning block assembly further comprises a movable pin guide sleeve and a ring gear shaft. The movable pin guide sleeve is arranged on one side of the upper part of the V-shaped positioning block and comprises a movable pin guide hole and a gear ring shaft mounting hole. The rack movable pin penetrates through the movable pin guide hole, and a rack perpendicular to the central axis of the rack movable pin is arranged on the rack movable pin; the gear ring shaft mounting hole and the movable pin guide hole are crossed and vertically arranged below the movable pin guide hole. The gear ring shaft is arranged in the gear ring shaft mounting hole, a gear ring is arranged at one end of the gear ring shaft, a hand wheel is arranged at the other end of the gear ring shaft, the gear ring is meshed with the rack, the hand wheel is rotated, the gear ring rotates to drive the rack movable pin to move in the movable pin guide hole through the rack, and therefore the rack movable pin is inserted into or pulled out of one end of the phase positioning hole of the camshaft gear.

In a preferred embodiment, the camshaft radial compression assembly further comprises a threaded pull rod, a return spring, and a lock nut. The threaded pull rod is vertically arranged on a threaded pull rod mounting hole of the base together with the upper plane of the base, a locking section is arranged at the lower end of the threaded pull rod and inserted into the threaded pull rod mounting hole, the threaded pull rod mounting hole is positioned on one side of the V-shaped positioning block and positioned between the two V-shaped positioning notches, and threads are arranged at the upper section of the threaded pull rod; the reset spring is sleeved on the middle section of the threaded pull rod; the locking nut is screwed on the thread at the upper end of the threaded pull rod; wherein the through-hole cover of radial compact heap is set up on the screw thread pull rod, and is located between lock nut and the reset spring, and rotatory lock nut downwards can drive radial compact heap and overcome reset spring's tension downstream to make the compress tightly cantilever of radial compact heap compress tightly the camshaft on two V-arrangement location breachs.

In a preferred embodiment, the press-fitting tool for the camshaft gear and the signal panel further comprises a pressing sleeve assembly arranged on the first guide slide block and the first guide slide block, and the pressing sleeve assembly comprises a pressing sleeve guide base, a pressing sleeve, a pressure transmission rod, a force transmission spring and a return spring. The pressing sleeve guide base is arranged on the first guide sliding block and comprises a cylindrical hole coinciding with the overlooking longitudinal center line of the base and a spring ring sinking groove annularly arranged on the outer side of the cylindrical hole and concentric with the cylindrical hole. One end of the pressing sleeve is arranged in the cylindrical hole in a penetrating mode, the pressing sleeve can reciprocate in the cylindrical hole along the axis of the cylindrical hole, and the pressing sleeve comprises a clearance cylindrical hole, a clearance through groove hole, a pressure transmission hole and a return flange. The hollow cylindrical hole and the hollow through groove hole are arranged at one end of the pressing sleeve, and the hollow through groove hole is positioned right below the hollow cylindrical hole; the pressure transmission hole is arranged at the other end of the pressing sleeve. The pressure transmission rod penetrates through the pressure transmission hole, and one end of the pressure transmission rod comprises a force transmission spring counter bore which is coaxial with the pressure transmission rod. One end of the force transmission spring is inserted in the force transmission spring counter bore, and the other end of the force transmission spring is propped against the bottom of the pressure transmission hole. One end of the return spring is arranged in the spring ring sinking groove, and the other end of the return spring is propped against the root of the return flange of the pressing sleeve.

In a preferred embodiment, the tool for press-fitting the camshaft gear and the signal panel further comprises an eccentric wheel assembly arranged at the front part of the second guide sliding block, and the eccentric wheel assembly comprises an assembly support, an eccentric shaft and a handle. The component support is arranged on the upper plane of the front part of the second guide sliding block and comprises a through hole which is crossed and vertical to the overlooking longitudinal center line of the base; the eccentric shaft penetrates through the through hole of the assembly support, an eccentric disc type flange is arranged at the end of the eccentric shaft, and a threaded hole is formed in the other end of the eccentric shaft; the handle sets up on the screw hole of eccentric shaft, pulls the handle and can drive the eccentric shaft and rotate, causes eccentric disk flange to deflect along with the rotation of eccentric shaft simultaneously.

In a preferred embodiment, the positioning shaft slider assembly further comprises a positioning shaft slider and a positioning shaft support. The positioning shaft sliding block is arranged in the guide sliding groove and can longitudinally and horizontally move in the guide sliding groove. The positioning shaft support is arranged at the front part of the positioning shaft sliding block and comprises a positioning shaft mounting hole, a guide pin mounting hole, a limiting block and a compression spring counter bore; the central axes of the shaft axis jacking bolts of the positioning shaft mounting holes are coaxial; the guide pin mounting hole is arranged on one side of the positioning shaft mounting hole, the central axis of the guide pin mounting hole is parallel to the axis line of the positioning shaft mounting hole and is positioned on the same horizontal plane, and meanwhile, the central axis of the guide pin mounting hole is coaxial with the central axis of the rack movable pin; the limiting block is arranged on one side of the rear part of the positioning shaft support, and the outer side surface of the limiting block extends out of the guide pin; the compression spring counter bore is located below the positioning shaft mounting hole and located on one side back to the camshaft positioning block assembly, and the central axis of the compression spring counter bore coincides with the central axis of the positioning shaft mounting hole in the overlooking direction.

In a preferred embodiment, the pressing sleeve assembly further comprises a spring guide rod and a pressing spring. The spring guide rod is arranged at the front end of the pressing sleeve guide base and is positioned right below the cylindrical hole; one end of the compression spring is sleeved on the spring guide rod, the other end of the compression spring is arranged in the compression spring counter bore, and the compression spring is used for keeping the end face of the positioning shaft and the end face of the camshaft in a compression state all the time in the press mounting process; wherein the compressed length of the compression spring is greater than the length of the spring guide rod.

In a preferred embodiment, the handle of the positioning shaft sliding block assembly is rotated to rotate the eccentric shaft, and the eccentric disc type flange is abutted against the limiting block of the positioning shaft sliding block assembly, so that the positioning shaft sliding block assembly can overcome the tension of the compression spring to move, and the end face of the positioning shaft is separated from the end face of the cam shaft.

In order to achieve another purpose, the invention provides a press-fitting method of a camshaft gear and a signal disc, which comprises the following steps: the camshaft is placed on the two V-shaped positioning notches of the V-shaped positioning block, and the camshaft is axially, radially and circumferentially positioned through the jacking bolt, the end limiting plate, the positioning shaft sliding block assembly and the circumferential positioning pin on the end surface of the positioning shaft; the installation sections of the camshaft gear and the signal panel of the camshaft penetrate through the half-moon-shaped limiting holes and then extend out of the end limiting plate; rotating a hand wheel of a gear ring shaft of the camshaft positioning block assembly to align a movable pin head of a movable pin of the rack with a guide pin of the positioning shaft sliding block assembly; pulling a handle of the eccentric wheel assembly to enable the eccentric shaft to rotate clockwise, and contacting a limiting block at one side of a positioning shaft support of the positioning shaft sliding block assembly by using an eccentric disc type flange at the other end of the eccentric shaft to enable the positioning shaft sliding block assembly to integrally overcome the resistance of a compression spring of the pressing sleeve assembly and slide backwards, so that the end face of the positioning shaft is separated from the end face of the camshaft, and a sufficient mounting space is provided for the camshaft gear; sleeving a camshaft gear on a positioning shaft of a positioning shaft sliding block assembly, and simultaneously inserting a guide pin into a phase positioning hole of the camshaft gear from one side; loosening a handle of the eccentric wheel assembly to enable the positioning shaft sliding block assembly to slide forwards by means of the tension of a pressing spring of the pressing sleeve assembly, enabling the end face of the positioning shaft and the end face of the camshaft to be attached and pressed tightly again, and enabling the circumferential positioning pin to be inserted into the circumferential positioning hole of the end face of the camshaft again; rotating a hand wheel of a gear ring shaft of the camshaft positioning block assembly to enable a movable pin head of a movable pin of the rack to be inserted from the other side of the phase positioning hole of the camshaft gear; applying external force to a pressure transmission rod of the pressing sleeve assembly, applying pressing force to the end face of the camshaft gear through a force transmission spring and a pressing sleeve, avoiding the positioning shaft support of the positioning shaft sliding block assembly by the pressing sleeve, positioning, and pressing the camshaft gear in place; during the press mounting process, the camshaft always keeps the absolute positioning in the axial direction, the radial direction and the circumferential direction, the end face of the camshaft is always pressed and attached to the end face of the positioning shaft, the circumferential positioning pin is always inserted into the circumferential positioning hole, and the guide pin and the rack movable pin are always inserted into the cam shaft gear from two sides of the phase positioning hole of the cam shaft gear.

In a preferred embodiment, the press-fitting step is repeated to press-fit the signal panel in place.

Compared with the prior art, the press-fitting tool and the press-fitting method for the camshaft gear and the signal panel have the following beneficial effects: when the position degree of the phase positioning pinhole of camshaft gear or signal disc was too big, the rack movable pin can overcome positioning spring's tension and roll back through the hand wheel of rotating the ring gear axle, rely on the end conical surface of rack movable pin still to aim at the phase positioning pinhole of camshaft gear and signal disc and carry out single or colleague pressure equipment simultaneously, reach the purpose of safety protection frock, and in the whole pressure equipment in-process of camshaft gear and signal disc, rack movable pin and uide pin insert wherein simultaneously from the both ends of the phase positioning pinhole of camshaft gear or signal disc all the time, can ensure the uniformity of the phase positioning of axle gear and signal disc.

Drawings

Fig. 1 is a schematic front view of a press-fitting tool according to an embodiment of the present invention;

fig. 2 is a left side schematic view of a press fitting tool according to an embodiment of the invention;

fig. 3 is a schematic right-view diagram of a press-fitting tool according to an embodiment of the invention;

FIG. 4 is a schematic top view of a press-fitting tool according to an embodiment of the invention;

fig. 5 is a rear view schematic diagram of a press fitting tool according to an embodiment of the invention;

FIG. 6 is a schematic cross-sectional view taken at A-A of FIG. 4;

FIG. 7 is a schematic front view of a slide guide base assembly according to an embodiment of the present invention;

FIG. 8 is a schematic top view of a slide guiding base assembly according to an embodiment of the present invention;

FIG. 9a is a schematic left side view of a slide guiding base assembly according to an embodiment of the present invention;

FIG. 9b is a schematic view in the direction P of FIG. 9 a;

FIG. 10 is a schematic cross-sectional view taken at B-B of FIG. 8;

FIG. 11 is a schematic front view of a jack bolt according to an embodiment of the present invention;

FIG. 12 is a schematic front view of a camshaft positioning block assembly according to an embodiment of the present invention;

FIG. 13 is a left side schematic view of a camshaft positioning block assembly according to an embodiment of the present invention;

FIG. 14 is a schematic top view of a camshaft positioning block assembly according to an embodiment of the present invention;

FIG. 15 is a schematic right view of a camshaft positioning block assembly according to an embodiment of the present invention;

FIG. 16 is a schematic cross-sectional view taken at C-C of FIG. 12;

FIG. 17 is a rear schematic view of a camshaft positioning block assembly according to an embodiment of the present invention;

FIG. 18 is a schematic cross-sectional view taken at D-D of FIG. 14;

FIG. 19 is a schematic front view of a V-shaped locating block in accordance with an embodiment of the present invention;

FIG. 20 is a schematic left side view of a V-shaped locating block in accordance with an embodiment of the present invention;

FIG. 21 is a schematic top view of a V-shaped locating block in accordance with an embodiment of the present invention;

FIG. 22 is a schematic right view of a V-shaped locating block in accordance with an embodiment of the present invention;

FIG. 23 is a front view of an end limiting plate according to an embodiment of the invention;

FIG. 24 is a schematic left view of an end limiting plate according to an embodiment of the invention;

FIG. 25 is a schematic top view of an end retainer plate according to an embodiment of the present invention;

FIG. 26 is a rear schematic view of an end limiting plate according to an embodiment of the invention;

FIG. 27 is a schematic front view of a ring gear shaft according to an embodiment of the present invention;

FIG. 28 is a schematic right view of a ring gear shaft according to an embodiment of the present invention;

FIG. 29 is a schematic front view of a rack cam pin according to an embodiment of the present invention;

FIG. 30 is a schematic front view of a removable pin guide sleeve according to one embodiment of the present invention;

FIG. 31 is a left side schematic view of a removable pin guide sleeve according to one embodiment of the present invention;

FIG. 32 is a schematic top view of a removable pin guide sleeve according to an embodiment of the present invention;

FIG. 33 is a schematic cross-sectional view taken at E-E of FIG. 30;

FIG. 34 is a schematic bottom view of a removable pin guide sleeve according to an embodiment of the present invention;

FIG. 35 is a schematic cross-sectional view taken at F-F of FIG. 30;

FIG. 36 is a schematic front view of a camshaft radial compression assembly according to an embodiment of the present invention;

FIG. 37 is a left side schematic view of a camshaft radial compression assembly according to an embodiment of the present invention;

FIG. 38 is a schematic illustration in top view of a camshaft radial compression assembly according to an embodiment of the present invention;

FIG. 39 is a schematic front view of a compression sleeve assembly according to an embodiment of the present invention;

FIG. 40 is a left side schematic view of a compression sleeve assembly according to an embodiment of the present invention;

FIG. 41 is a schematic top view of a compression sleeve assembly according to an embodiment of the present invention;

FIG. 42 is a schematic right view of a compression sleeve assembly according to an embodiment of the present invention;

FIG. 43 is a schematic cross-sectional view taken at G-G of FIG. 41;

FIG. 44 is a cross-sectional rotated schematic view at H-H of FIG. 42;

FIG. 45 is a schematic front view of an eccentric wheel assembly according to an embodiment of the present invention;

FIG. 46 is a schematic cross-sectional view taken at I-I of FIG. 45;

FIG. 47 is a schematic top view of an eccentric wheel assembly according to an embodiment of the present invention;

FIG. 48 is a schematic front view of a positioning shaft slide assembly according to an embodiment of the present invention;

FIG. 49 is a left side schematic view of a positioning shaft slide assembly according to an embodiment of the present invention;

FIG. 50 is a schematic top view of a positioning shaft slide assembly according to an embodiment of the present invention;

FIG. 51 is a schematic right view of a positioning shaft slide assembly according to an embodiment of the present invention;

FIG. 52 is a schematic front view of a circumferential locating pin according to an embodiment of the present invention;

FIG. 53 is a schematic left side view of a circumferential locating pin according to one embodiment of the present invention;

FIG. 54 is a schematic top view of a circumferential locating pin according to an embodiment of the present invention;

FIG. 55 is a schematic cross-sectional view taken at J-J of FIG. 48;

FIG. 56 is a schematic front view of a guide pin according to an embodiment of the invention;

FIG. 57 is a left side schematic view of a guide pin according to an embodiment of the present invention;

FIG. 58 is a schematic front view of a first step in a press-fitting process according to one embodiment of the present invention;

fig. 59 is a schematic top view of a first step in a press-fitting process according to an embodiment of the present invention;

FIG. 60 is a schematic front view of a second step of a press-fitting process according to one embodiment of the present invention;

FIG. 61 is a schematic top view of a second step in a press-fitting process according to one embodiment of the present invention;

fig. 62 is a front view of a third step in the press-fitting process according to an embodiment of the present invention;

FIG. 63 is a schematic top view of a third step in the press-fitting process according to one embodiment of the present invention;

fig. 64 is a front view schematic diagram of a fourth step in the press-fitting process in accordance with an embodiment of the present invention;

FIG. 65 is a schematic top view of a fourth step in the press-fitting process according to one embodiment of the present invention;

fig. 66 is a front view of a fifth step in the press-fitting process according to an embodiment of the present invention;

FIG. 67 is a schematic top view of a fifth step in the press-fitting process according to one embodiment of the present invention;

fig. 68 is a front view of a sixth step in the press-fitting process according to an embodiment of the present invention;

FIG. 69 is a schematic top view of a sixth step in the press-fitting process according to one embodiment of the present invention;

fig. 70 is a front view schematic diagram of a seventh step in a press-fitting process in accordance with an embodiment of the present invention;

FIG. 71 is a schematic top view of a seventh step in a press-fitting process according to one embodiment of the present invention;

fig. 72 is a flow chart of a press-fitting method according to an embodiment of the present invention.

Description of the main reference numerals:

100: press fitting tool, 1: guide slide base assembly, 101: jacking bolt, 102: eye screw (M10), 103: socket head cap screw (M12 × 60), 104: tailstock, 105: base, 1051: threaded tie rod mounting hole, 1052: locking hole, 106: socket head cap screw (M8 × 80), 107: cylindrical pin (Φ 8 × 80), 108: first guide shoe, 109: socket head cap screw (M8 × 80), 110: cylindrical pin (Φ 8 × 80), 111: second guide slide block, 2: camshaft positioning block assembly, 201: v-shaped positioning block, 202: end portion limit plate, 2021: half-moon shaped limiting hole, 203: cylindrical pin (Φ 8 × 60), 204: socket head cap screw (M8 × 65), 205: socket head cap screw (M6 × 55), 206: cylindrical pin (Φ 6 × 25), 207: steel ball (SD8), 208: ring gear shaft, 2081: ring gear, 2082: locating counterbore, 209: socket head cap screw (M4 × 16), 210: first gasket, 211: positioning spring, 212: bowl plug (Φ 32.5), 213: socket head cap screw (M6 × 20), 214: second gasket, 215: rack sliding pin, 2151: movable pin head, 2152: rack, 216: movable pin guide sleeve, 2161: moving pin guide hole, 2162: ring gear shaft mounting hole, 2163: countersink, 3: socket head cap screw (M8 × 65), 4: camshaft radial compression assembly, 401: threaded tie rod, 4011: locking pin holes, 402: lock nut, 403: radial compact block, 404: gasket, 405: return spring, 5: cylindrical pin (Φ 10 × 115), 6: socket head cap screw M10 × 120, 7: pressing sleeve component, 701: pressing sleeve, 7011: void-free cylindrical hole, 7012: keep away empty slotted hole, 7013: pressure transfer orifice, 7014: return flange, 7015: u-shaped spacing groove, 702: eye screw (M10), 703: limit screw, 704: force transmission spring, 705: return spring, 706: pressure transmission rod, 7061: force transfer spring counterbore, 707: spacing flange, 708: compression spring, 709: spring guide rod, 710: pressing sleeve guide base, 7101: cylindrical bore, 7102: spring ring sink, 711: socket head cap screw (M6 × 35), 8: socket head cap screw (M8 × 45), 9: eccentric wheel assembly, 901: module mount, 902: handle, 903: antifriction washer, 904: locking nut, 905: eccentric shaft, 9051: eccentric disc flange, 9052: threaded hole, 10: socket head cap screw (M8 × 90), 11: positioning shaft slider assembly, 1101: socket head cap screw (M6 × 70), 1102: socket head cap screw (M8 × 60), 1103: cylindrical pin (Φ 8 × 45), 1104: positioning shaft support, 11041: positioning shaft mounting hole, 11042: guide pin mounting hole, 11043: stopper, 11044: hold-down spring counter bore, 1105: positioning shaft slider, 1106: socket head cap screw (M8 × 100), 1107: circumferential locating pin, 11071: pin head taper, 1108: positioning shaft, 1109: guide pin, 11091: pin nose cone, 1110: fixing pin, 12: cylindrical pin (Φ 8 × 40), 13: cylindrical pin (Φ 8 × 60), 200: camshaft, 300: camshaft gear, 400: and a signal panel.

Detailed Description

The following detailed description of the present invention is provided in conjunction with the accompanying drawings, but it should be understood that the scope of the present invention is not limited to the specific embodiments.

Throughout the specification and claims, unless explicitly stated otherwise, the word "comprise", or variations such as "comprises" or "comprising", will be understood to imply the inclusion of a stated element or component but not the exclusion of any other element or component.

As shown in fig. 1 to 6, a press-fitting tool for a camshaft gear and a signal panel according to a preferred embodiment of the present invention mainly includes a guide sliding base assembly 1, a camshaft positioning block assembly 2, a camshaft radial pressing assembly 4, a pressing sleeve assembly 7, an eccentric wheel assembly 9, a positioning shaft slider assembly 11, and the like.

As shown in fig. 7 to 11, the slide guiding base assembly 1 includes: the bolt comprises a puller bolt 101, a puller bolt 102(M10), an inner hexagonal socket head cap screw 103(M12 × 60), a tailstock 104, a base 105, an inner hexagonal socket head cap screw 106(M8 × 80), a cylindrical pin 107(Φ 8 × 80), a first guide block 108, an inner hexagonal socket head cap screw 109(M8 × 80), a cylindrical pin 110 (Φ 8 × 80), and a second guide block 111. The jacking bolt 101 is arranged at one end of the base 105, and the central axis of the jacking bolt 101 is superposed with the overlooking longitudinal central line of the base 105; the first guide slide block 108 and the second guide slide block 111 are arranged at the other end of the base 105, the first guide slide block 108 and the second guide slide block 111 are arranged oppositely, a guide sliding groove is formed between the first guide slide block and the second guide slide block, and the longitudinal center line of the guide sliding groove is superposed with the overlooking longitudinal center line of the base 105. The sliding guide base 105 assembly 1 further comprises a tail seat 104 disposed at one end of the base 105, the tail seat 104 is provided with a screw hole coinciding with the overlooking longitudinal center line of the base 105, and the screw hole is used for installing the puller bolt 101.

As shown in fig. 12 to 18, the camshaft positioning block assembly 2 is disposed between the tightening bolt 101 and the first and

second guide sliders

108 and 111, and the camshaft positioning block assembly 2 further includes: the positioning device comprises a V-shaped positioning block 201, an end limiting plate 202, a cylindrical pin 203 (phi 8 x 60), an inner hexagonal socket head screw 204(M8 x 65), an inner hexagonal socket head screw 205(M6 x 55), a cylindrical pin 206 (phi 6 x 25), a steel ball 207(SD8), a gear ring shaft 208, an inner hexagonal socket head screw 209(M4 x 16), a first gasket 210, a positioning spring 211, a bowl-shaped plug 212 (phi 32.5), an inner hexagonal socket head screw 213(M6 x 20), a second gasket 214, a rack movable pin 215 and a movable pin guide sleeve 216.

As shown in fig. 19 to 22, the V-shaped positioning block 201 has two V-shaped positioning notches symmetrically arranged, and a central connecting line of the two V-shaped positioning notches coincides with a top-view longitudinal central line of the base 105.

As shown in fig. 23 to 26, an end restriction plate 202 is provided on a side of the V-shaped positioning block 201 away from the jack bolt 101. A half-moon-shaped limiting hole 2021 is formed in the middle of the upper portion of the end limiting plate 202. Spacing hole 2021's effect is that the camshaft gear who lets lie in the camshaft and the installation section of signal disc extend to outside the tip limiting plate 202, but the shaft shoulder that supports the camshaft is used for cooperating the puller bolt 101 to carry out axial spacing to the camshaft.

As shown in fig. 27 to 28, the gear ring shaft 208 is disposed in the gear ring shaft mounting hole 2162, one end of the gear ring shaft 208 is provided with a gear ring 2081, and the other end is provided with a hand wheel, the gear ring 2081 is engaged with the rack 2152, and when the hand wheel is rotated, the gear ring 2081 rotates to drive the rack moving pin 215 to move in the moving pin guide hole 2161 through the rack 2152, so that the rack moving pin 215 is inserted into or pulled out of one end of the phase positioning hole of the camshaft gear.

As shown in fig. 29 to 35, the movable pin guide sleeve 216 is provided on one side of the upper portion of the V-shaped positioning block 201, and the movable pin guide sleeve 216 includes a movable pin guide hole 2161 and a ring gear shaft mounting hole 2162. The rack moving pin 215 is inserted into the moving pin guide hole 2161, and the rack moving pin 215 is provided with a rack 2152 perpendicular to the central axis thereof. The rack moving pin 215 is disposed on one side of the V-shaped positioning block 201 in parallel with a central line of the two V-shaped positioning notches, the rack moving pin 215 can horizontally move longitudinally in the moving pin guide hole 2161 along its central axis, and the moving pin head 2151 of the rack moving pin 215 has a tapered head. A ring gear shaft mounting hole 2162 is vertically crossed with the moving pin guide hole 2161 and is disposed below the moving pin guide hole 2161.

Referring to fig. 29 to 35 again, the camshaft positioning block assembly 2 further includes a step positioning mechanism of the rack movable pin 215, which includes a plurality of positioning counterbores 2082, positioning springs 211, a plurality of counter bores 2163, and a plurality of steel balls 207. A plurality of locating counterbores 2082 are provided on the ring gear shaft 208, with the apertures of the plurality of locating counterbores 2082 facing the ring gear shaft mounting hole 2162. A positioning spring 211 is disposed within each positioning counterbore 2082. The plurality of countersunk holes 2163 are uniformly distributed and annularly arranged around the gear ring shaft mounting hole 2162, and the positions of the plurality of countersunk holes 2163 correspond to the positions of the plurality of positioning counterbores 2082. A plurality of steel balls 207 are disposed between the positioning spring 211 and the counter-bore 2163. The plurality of steel balls 207 are kept in the plurality of countersunk holes 2163 by means of the tension of the positioning spring 211 so as to lock the gear ring shaft 208 against random rotation and ensure that the rack movable pin 215 cannot move randomly in the whole press fitting process, and when an external force is applied to a hand wheel of the gear ring shaft 208 to rotate the gear ring shaft 208, the steel balls 207 roll out of the countersunk holes 2163 against the tension of the positioning spring 211 until falling into the next countersunk hole again, so that the step movement of the rack movable pin 215 is achieved. The number of the positioning counterbores 2082, the positioning springs 211, the counter bores 2163, and the steel balls 207 of the present embodiment is only four, and they are uniformly distributed at 90 degrees, but the present invention is not limited thereto, and the corresponding step positions can be increased or decreased as required.

As shown in fig. 36 to 38, the camshaft radial pressing assembly 4 includes: the device comprises a threaded pull rod 401, a locking nut 402, a radial pressing block 403, a washer 404 and a return spring 405. The threaded pull rod 401 is vertically arranged on a threaded pull rod mounting hole 1051 of the base 105 with the upper plane of the base 105, the lower end of the threaded pull rod 401 is provided with a locking section which is inserted into the threaded pull rod mounting hole 1051, the locking section is provided with a locking pin hole 4011, the threaded pull rod mounting hole 1051 of the base 105 is provided with a locking hole 1052 matched with the locking pin hole 4011, and the threaded pull rod 401 is arranged in the locking pin hole 4011 and the locking hole 1052 in a penetrating manner through a pin shaft and used for locking the axial movement of the threaded pull rod 401. The threaded pull rod mounting hole 1051 is located on one side of the V-shaped positioning block 201 and located between the two V-shaped positioning notches, and the upper section of the threaded pull rod 401 has threads. The return spring 405 is sleeved on the middle section of the threaded pull rod 401. A lock nut 402 is screwed on the thread at the upper end of the threaded pull rod 401. The through hole sleeve of the radial pressing block 403 is arranged on the threaded pull rod 401 and is located between the locking nut 402 and the return spring 405, and the locking nut 402 is rotated downwards to drive the radial pressing block 403 to move downwards against the tension of the return spring 405, so that the pressing cantilever of the radial pressing block 403 presses the camshaft onto the two V-shaped positioning notches.

As shown in fig. 39 to 42, the tool for press-fitting the camshaft gear and the signal disc further includes a pressing sleeve assembly 7 disposed on the first guide block 108 and the first guide block 108. The pressing sleeve component 7 comprises: the pressure sleeve 701, an eye screw 702(M10), a limit screw 703, a force transmission spring 704, a return spring 705, a pressure transmission rod 706, a limit flange 707, a compression spring 708, a spring guide rod 709, a pressure sleeve guide base 710 and an inner hexagon socket head cap screw 711(M6 × 35). The pressing sleeve guide base 710 is disposed on the first guide sliding block 108 and the first guide sliding block 108, and the pressing sleeve guide base 710 includes a cylindrical hole 7101 coinciding with a top-view longitudinal center line of the base 105 and a spring ring sinking groove 7102 annularly disposed outside the cylindrical hole 7101 and concentric therewith. One end of the pressing sleeve 701 penetrates through the cylindrical hole 7101, the pressing sleeve 701 can reciprocate in the cylindrical hole 7101 along the axis of the pressing sleeve, and the pressing sleeve 701 comprises a clearance cylindrical hole 7011, a clearance through slot 7012, a pressure transmission hole 7013 and a return flange 7014. The clearance cylindrical hole 7011 and the clearance through groove 7012 are arranged at one end of the pressing sleeve 701, the clearance through groove 7012 is located right below the clearance cylindrical hole 7011, and the clearance cylindrical hole 7011 and the clearance through groove 7012 are used for accommodating and avoiding the positioning shaft 1108 and the positioning shaft support 1104. The pressure transmission hole 7013 is arranged at the other end of the pressing sleeve 701, and the pressure transmission hole 7013 and the clearance cylindrical hole 7011 are coaxial but not communicated. A return flange 7014 is provided at the other end of the pressing sleeve 701. The pressure transfer rod 706 is inserted into the pressure transfer hole 7013, and one end of the pressure transfer rod 706 includes a force transfer spring counter bore 7061 coaxial therewith. One end of the force transfer spring 704 is inserted into the force transfer spring counter bore 7061 and the other end abuts the bottom of the pressure transfer aperture 7013. One end of the return spring 705 is disposed in the spring ring sink 7102 and the other end abuts against the root of the return flange 7014 of the compression sleeve 701.

The pressing sleeve assembly 7 further comprises a limit screw 703, a U-shaped limit groove 7015, a limit flange 707, a pressure transmission section and an external force application section of the pressure transmission rod 706, a spring guide rod 709, and a compression spring 708. The limit screw 703 is arranged in a limit screw hole at the top of the pressing sleeve guide base 710. The U-shaped limiting groove 7015 is arranged at the top of the pressing sleeve 701, the U-shaped limiting groove 7015 is communicated with the pressure transmission hole 7013, the U-shaped limiting groove 7015 has a certain length in the axial direction of the pressure transmission hole 7013, the limiting screw 703 penetrates through the limiting screw hole and extends into the U-shaped limiting groove 7015, and the limiting screw 703 and the U-shaped limiting groove 7015 limit the rotation of the pressing sleeve 701 in the circumferential direction. A stop flange 707 is provided on the side of the return flange 7014 facing away from the spring ring recess 7102. The force transmission spring counter bore 7061 is arranged on the pressure transmission section, the pressure transmission section is used for penetrating in the pressure transmission hole 7013 and transmitting force to the pressing sleeve 701 through the force transmission spring 704, the external force application section extends out of the pressure transmission hole 7013 and is used for applying external force, a shaft shoulder is arranged between the pressure transmission section and the external force application section, the diameter of a central hole of the limiting flange 707 is smaller than that of the pressure transmission section and larger than that of the external force application section, the limiting flange 707 abuts against the shaft shoulder, and the limiting pressure transmission section cannot be pulled out of the pressure transmission hole 7013. The spring guide bar 709 is provided at the front end of the sleeve guide base 710, and is located right below the cylindrical hole 7101. One end of the hold-down spring 708 is sleeved on the spring guide rod 709, the other end is arranged in the hold-down spring counter bore 11044, and the hold-down spring 708 is used for keeping the end face of the positioning shaft 1108 and the end face of the camshaft in a hold-down state all the time in the press-fitting process. Wherein the compressed length of the pressing spring 708 is greater than the length of the spring guide 709.

As shown in fig. 45 to 47, the tool for press-fitting the camshaft gear and the signal disc further includes an eccentric wheel assembly 9 disposed at the front portion of the second guide slider 111. The eccentric wheel assembly 9 includes: assembly mount 901, handle 902, friction reducing washer 903, locking nut 904, eccentric shaft 905. The component mount 901 is disposed on the upper plane of the front portion of the second guide slider 111, and the component mount 901 includes a through hole intersecting and perpendicular to the top-view longitudinal center line of the base 105; the eccentric shaft 905 is inserted into a through hole of the assembly support 901, an eccentric disc flange 9051 is arranged at the end of the eccentric shaft 905, and a threaded hole is formed in the other end of the eccentric shaft. The handle 902 is arranged on a threaded hole of the eccentric shaft 905, and pulling the handle 902 can drive the eccentric shaft 905 to rotate, and simultaneously cause the eccentric disc flange 9051 to deflect along with the rotation of the eccentric shaft 905.

As shown in fig. 48 to 56, the positioning shaft slider assembly 11 is disposed in the guide groove and is capable of horizontal movement in the longitudinal direction of the guide groove. The positioning shaft slider assembly 11 is in turn comprised of: the positioning device comprises an inner hexagonal socket head cap screw 1101(M6 × 70), an inner hexagonal socket head cap screw 1102(M8 × 60), a cylindrical pin 1103(Φ 8 × 45), a positioning shaft support 1104, a positioning shaft slider 1105, an inner hexagonal socket head cap screw 1106(M8 × 100), a circumferential positioning pin 1107, a positioning shaft 1108, a guide pin 1109 and a fixing pin 1110.

The positioning shaft 1108 is provided at one end of the positioning shaft slider assembly 11, the central axis of the positioning shaft 1108 coincides with the vertical center line of the base 105 in plan view, and the end surface of the positioning shaft 1108 faces the end stopper plate 202. A circumferential positioning pin 1107 is provided on an end surface of the positioning shaft 1108, and an end portion of the circumferential positioning pin 1107 has a pin nose tapered portion. The guide pin 1109 is provided on one side of the positioning shaft 1108 with its center axis parallel to the center axis of the positioning shaft 1108, the guide pin 1109 has its center axis coaxial with the center axis of the rack moving pin 215, and the guide pin 1109 has a pin nose cone at its end.

The positioning shaft slider assembly 11 further includes a positioning shaft slider 1105 and a positioning shaft support 1104. The positioning shaft slider 1105 is disposed in the guide chute and can move horizontally in the longitudinal direction of the guide chute. The positioning shaft support 1104 is disposed at the front of the positioning shaft slider 1105, and the positioning shaft support 1104 includes a positioning shaft mounting hole 11041, a guide pin mounting hole 11042, a stopper 11043, and a compression spring counter bore 11044. The center axis of the positioning shaft mounting hole 11041 is coaxial with the center axis of the puller bolt 101. The guide pin mounting hole 11042 is provided on one side of the positioning shaft mounting hole 11041, the center axis of the guide pin mounting hole 11042 is parallel to the axis line of the positioning shaft mounting hole 11041 and the two are in the same horizontal plane, and the center axis of the guide pin mounting hole 11042 is coaxial with the center axis of the rack movable pin 215. The stopper 11043 is provided on the side of the rear portion of the positioning shaft support 1104, and the outer side surface of the stopper 11043 extends beyond the guide pin 1109. The hold-down spring counterbore 11044 is located below the positioning shaft mounting hole 11041 and on the side facing away from the camshaft positioning block assembly 2, and the central axis of the hold-down spring counterbore 11044 coincides with the central axis of the positioning shaft mounting hole 11041 in the top view direction.

Referring to fig. 1 to 6 and the accompanying drawings of each component, the position and motion relationship of the camshaft gear and signal disc press-fitting tool of the present invention for each component is as follows:

wherein, the base 105 of the guide sliding base 105 component 1 is a basic assembly body, one end of the guide sliding base is provided with a tailstock 104 and a puller bolt 101 for longitudinal adjustment and support (puller) of the camshaft, the other end of the guide sliding base is provided with a first guide sliding block 108 and a second guide sliding block 111 for guiding the positioning shaft sliding block component 11, and the middle part of the guide sliding base is provided with a screw hole group and a pin hole group for installing the camshaft positioning block component 2 and the eccentric wheel component 9. The V-shaped positioning block 201 of the camshaft positioning block component 2 is provided with two V-shaped positioning notches and is fastened on the base 105 of the slide guiding base 105 component 1 through a cylindrical pin 203 (phi 8 multiplied by 60) and an inner hexagonal socket head cap screw 213(M6 multiplied by 20), and the end surface of the V-shaped positioning block 201 is also provided with a screw hole group and a pin hole group which are connected with the end limiting plate 202. The end limiting plate 202 is provided with a half-moon-shaped limiting hole 2021 for axially limiting the camshaft. The rack moving pin 215 can slide toward both ends along the axis of the moving pin guide hole 2161 in the moving pin guide sleeve 216, and the protruding distance is adjusted by the rotation of the ring gear shaft 208. A gear ring 2081 matched with the rack movable pin 215 is arranged at one end of the gear ring shaft 208, a knob handle is arranged at the other end of the gear ring shaft 208, a positioning counter hole 2082 is arranged at the other end of the gear ring shaft and used for installing a steel ball 207(SD8) and a positioning spring 211, and the gear ring shaft is matched with a counter hole 2163 on the movable pin guide sleeve 216 to perform stepping adjustment and positioning on the extending distance of the rack movable pin 215 through the rotation of the gear ring shaft 208. The camshaft radial compression assembly 4 compresses the camshaft by causing the radial compression block 403 to move through rotation of a lock nut 402 connected in series with the threaded pull rod 401, and causes the radial compression block 403 to return through a washer 404 and a return spring 405 (at which time the lock nut 402 is loosened). One end of a pressing sleeve 701 of the pressing sleeve component 7 is provided with a clearance cylindrical hole 7011 of a positioning shaft 1108 of the positioning shaft sliding block component 11, the lower side is also provided with a clearance through groove 7012 of a positioning shaft support 1104 of the positioning shaft sliding block component 11, the other end is provided with a pressure transmission hole 7013 matched with the pressure transmission rod 706, a return flange 7014 is arranged at the end part, a screw hole group for installing a limiting flange 707 is arranged on the return flange 7014, and the upper side is also provided with a U-shaped limiting groove 7015. The pressure transfer rod 706 is provided with two stepped cylindrical surfaces, namely a pressure transfer section and an external force application section, wherein the cylindrical surface of the pressure transfer section at the large end is matched with a pressure transfer hole 7013 in the pressing sleeve 701, and a force transfer spring counter bore 7061 is formed for installing a force transfer spring 704. The middle of the pressing sleeve guide base 710 is provided with a cylindrical hole 7101 matched with the pressing sleeve 701, and is provided with a screw hole for installing a limit screw 703 and a pressing spring 708 and a spring ring sinking groove 7102 for installing a return spring 705. The limit screw 703 and the limit flange 707 limit the pressure sleeve 701 and the pressure transmission rod 706, respectively. The component support 901 of the eccentric wheel component 9 is fastened on the base 105 through an inner hexagonal socket head cap screw 8 (M8X 45) and an inner hexagonal socket head cap screw 10 (M8X 90), one end of the eccentric shaft 905 is made into an eccentric disc flange 9051, the eccentric shaft 905 is driven to rotate through the handle 902, the contact position of the eccentric disc flange 9051 and a limit block 11043 of a positioning shaft sliding block 1105 on the positioning shaft sliding block component 11 can be changed, and therefore the position of the positioning shaft sliding block component 11 relative to the base 105 can be changed (after right movement, a larger space is provided, and the arrangement and extraction of a camshaft gear, a signal disc and a camshaft component are facilitated). The positioning shaft slider 1105 of the positioning shaft slider assembly 11 is installed in the guide slot formed by the first guide slider 108 and the second guide slider 111, can slide along the guide slot, and is pressed against the eccentric shaft 905 by the pressing spring 708. The positioning shaft support 1104 is fastened to the positioning shaft slider 1105 by a socket head cap screw 1102(M8 × 60), a cylindrical pin 1103(Φ 8 × 45), a socket head cap screw 1106(M8 × 100), and a fixing pin 1110, and a circumferential positioning pin 1107, a positioning shaft 1108, and a guide pin 1109 are mounted on the positioning shaft support 1104, and all have correct positional relationships therebetween.

As shown in fig. 58 to 72, the press-fitting process of the press-fitting tool for camshaft gears and signal discs of the present invention is schematically illustrated as follows: (the cam shaft gear and the signal disc can be sleeved at the same time, and the cam shaft is pressed in at one time).

The first step is as follows: the camshaft is placed on the two V-shaped positioning notches of the V-shaped positioning block 201, the jacking bolt 101 is used for abutting against the tail of the camshaft, the shaft shoulder of the camshaft is abutted against the end limiting plate 202, and the installation sections of the camshaft gear and the signal panel of the camshaft penetrate through the half-moon-shaped limiting hole 2021 and then extend out of the end limiting plate 202. And at the same time, the circumferential positioning pin 1107 at the end face of the positioning shaft 1108 of the positioning shaft slider assembly 11 is inserted into the circumferential positioning hole at the end face of the camshaft. Tightening the jack bolts 101 and tightening the lock nuts 402 of the camshaft radial compression assembly 4 causes the radial compression blocks 403 to compress the camshaft against the two V-shaped positioning notches so that the camshaft is fully positioned from the axial, radial, and circumferential directions. At this time, the hand wheel of the gear ring shaft 208 of the camshaft positioning block assembly 2 is rotated, so that the movable pin head 2151 of the rack movable pin 215 is aligned with the guide pin 1109 of the positioning shaft slide block assembly 11, and after the coaxiality of the two is confirmed, the camshaft positioning is completed.

The second step is that: the handle 902 of the eccentric wheel assembly 9 is pulled to enable the eccentric shaft 905 to rotate clockwise, the eccentric disc flange 9051 at the other end of the eccentric shaft 905 contacts the limit block 11043 at one side of the locating shaft support 1104 of the locating shaft sliding block assembly 11, so that the locating shaft sliding block assembly 11 integrally overcomes the resistance of the compression spring 708 of the pressing sleeve assembly 7 to slide backwards, the end face of the locating shaft 1108 is separated from the end face of the camshaft, and a sufficient installation space is provided for the camshaft gear.

The third step: the camshaft gear is fitted over the positioning shaft 1108 of the positioning shaft slider assembly 11, while the guide pin 1109 is inserted into the phase positioning hole of the camshaft gear from one side. The handle 902 of the eccentric wheel assembly 9 is released, the positioning shaft sliding block assembly 11 slides forwards by the tension of the pressing spring 708 of the pressing sleeve assembly 7, the end surface of the positioning shaft 1108 is attached to and pressed against the end surface of the camshaft again, and the circumferential positioning pin 1107 is inserted into the circumferential positioning hole of the end surface of the camshaft again. The hand wheel of the gear ring shaft 208 of the camshaft positioning block assembly 2 is rotated, so that the movable pin head 2151 of the rack movable pin 215 is inserted into the other side of the phase positioning hole of the camshaft gear, the hand wheel is adjusted to enable the movable pin head 2151 of the rack movable pin 215 to be close to but not in contact with the guide pin 1109, and meanwhile, the steel balls 207 of the stepping positioning mechanism of the camshaft positioning block assembly 2 are all located in the countersunk holes 2163 at the corresponding positions, so that the rack movable pin 215 cannot move freely in the whole press fitting process. Because the ends of the circumferential locating pin 1107, the movable pin head 2151, and the guide pin 1109 are all tapered, they can be automatically fine-tuned during locating in the locating pin holes to ensure the consistency and accuracy of phase location.

A fourth step of: an external force is applied to a pressure transmission rod 706 of the pressing sleeve assembly 7, a pressing force is applied to the end face of the camshaft gear through the force transmission spring 704 and the pressing sleeve 701, and due to the arrangement of the clearance cylindrical hole 7011 and the clearance through groove 7012 at the front end of the pressing sleeve 701, the pressing sleeve 701 can avoid parts such as a positioning shaft support 1104 and a positioning shaft 1108 of the positioning shaft sliding block assembly 11 in the pressing process and cannot interfere with each other. The pressing sleeve 701 slowly presses the cam shaft gear in place, the cam shaft always keeps absolute positioning in the axial direction, the radial direction and the circumferential direction in the whole pressing process, the end face of the cam shaft is always pressed and attached to the end face of the positioning shaft 1108, and the circumferential positioning pin 1107 is also always inserted into the circumferential positioning hole. While the guide pin 1109 and the rack moving pin 215 are always inserted into the cam gear from both sides of the phase positioning hole thereof. Thus, the consistency and the accuracy of the phase positioning after the camshaft gear is pressed in place are ensured.

The fifth step, the sixth step and the seventh step: almost the second step, the third step and the fourth step are repeated, but the press mounting process of the signal panel is only performed, and the details are not repeated.

In addition, the fifth step, the sixth step and the seventh step of the above process can be performed in a manner of being overlapped with the second step, the third step and the fourth step, that is, the signal panel and the camshaft gear are simultaneously installed on the positioning shaft 1108, and press fitting is completed together after the positioning is confirmed, so that the consistency and the accuracy of phase positioning after the camshaft gear and the signal panel are pressed in place can be ensured.

In conclusion, the press-fitting tool and the press-fitting method for the camshaft gear and the signal panel have the following beneficial effects: when the position degree of the phase positioning pinhole of camshaft gear or signal disc was too big, the rack movable pin can overcome positioning spring's tension and roll back through the hand wheel of rotating the ring gear axle, rely on the end conical surface of rack movable pin still to aim at the phase positioning pinhole of camshaft gear and signal disc and carry out single or colleague pressure equipment simultaneously, reach the purpose of safety protection frock, and in the whole pressure equipment in-process of camshaft gear and signal disc, rack movable pin and uide pin insert wherein simultaneously from the both ends of the phase positioning pinhole of camshaft gear or signal disc all the time, can ensure the uniformity of the phase positioning of axle gear and signal disc.

The foregoing descriptions of specific exemplary embodiments of the present invention have been presented for purposes of illustration and description. It is not intended to limit the invention to the precise form disclosed, and obviously many modifications and variations are possible in light of the above teaching. The exemplary embodiments were chosen and described in order to explain certain principles of the invention and its practical application to enable one skilled in the art to make and use various exemplary embodiments of the invention and various alternatives and modifications as are suited to the particular use contemplated. It is intended that the scope of the invention be defined by the claims and their equivalents.

Claims

1. The utility model provides a pressure equipment frock of camshaft gear and signal disc which characterized in that includes:

lead smooth base subassembly, it includes:

a base;

the jacking bolt is arranged at one end of the base, and the central axis of the jacking bolt is superposed with the overlooking longitudinal central line of the base; and

the first guide sliding block and the second guide sliding block are arranged at the other end of the base, the first guide sliding block and the second guide sliding block are arranged oppositely, a guide sliding groove is formed between the first guide sliding block and the second guide sliding block, and the longitudinal center line of the guide sliding groove is superposed with the overlooking longitudinal center line of the base;

camshaft locating piece subassembly, its setting is in the puller bolt with first guide slider with between the slider is led to the second, camshaft locating piece subassembly includes:

the V-shaped positioning block is provided with two V-shaped positioning notches which are symmetrically arranged, and the central connecting line of the two V-shaped positioning notches is superposed with the overlooking longitudinal central line of the base;

the end limiting plate is arranged on one side, away from the puller bolt, of the V-shaped positioning block; and

the rack movable pin is arranged on one side of the V-shaped positioning block in parallel with the central connecting line of the two V-shaped positioning notches, the rack movable pin can longitudinally and horizontally move along the central axis of the rack movable pin, and the movable pin head of the rack movable pin is provided with a conical head;

the camshaft radial pressing assembly is arranged on the other side of the V-shaped positioning block and is perpendicular to the upper plane of the base, and the camshaft radial pressing assembly comprises a radial pressing block with a through hole; and

the location axle slider subassembly, it sets up in the spout and can be in the vertical horizontal migration of spout, the location axle slider subassembly includes:

the positioning shaft is arranged at one end of the positioning shaft sliding block assembly, the central axis of the positioning shaft is overlapped with the overlooking longitudinal central line of the base, and the end face of the positioning shaft faces the end limiting plate;

a circumferential positioning pin provided on an end surface of the positioning shaft, an end portion of the circumferential positioning pin having a pin nose cone; and

the center axis of the guide pin is arranged on one side of the positioning shaft in parallel with the center axis of the positioning shaft, the center axis of the guide pin is coaxial with the center axis of the rack movable pin, and a pin head guide cone is arranged at the end part of the guide pin;

the camshaft is arranged on the two V-shaped positioning notches, and the axis of the camshaft is ensured to be coaxial with the central axis of the jacking bolt and the central axis of the positioning shaft;

the jacking bolt and the end limiting plate control the axial positioning of the camshaft, the two V-shaped positioning notches and the radial pressing block control the radial positioning of the camshaft, and the circumferential positioning pin and the circumferential positioning hole in the end face of the camshaft control the circumferential positioning of the camshaft;

the positioning shaft is inserted into a center hole of the cam shaft gear, and the rack movable pin and the guide pin are simultaneously inserted from two ends of a phase positioning hole of the cam shaft gear, so that accurate phase positioning of the cam shaft gear can be guaranteed.

2. A press fitting tool for a camshaft gear and a signal disc as claimed in claim 1, wherein the camshaft positioning block assembly further comprises:

the activity round pin uide bushing, its setting is in one side on V-arrangement locating piece upper portion, the activity round pin uide bushing includes:

the rack movable pin penetrates through the movable pin guide hole, and a rack perpendicular to the central axis of the rack movable pin is arranged on the rack movable pin; and

the gear ring shaft mounting hole is intersected with the movable pin guide hole and is vertically arranged below the movable pin guide hole; and

and the gear ring shaft is arranged in the gear ring shaft mounting hole, one end of the gear ring shaft is provided with a gear ring, the other end of the gear ring shaft is provided with a hand wheel, the gear ring is meshed with the rack, the hand wheel is rotated, and the gear ring rotates to drive the rack movable pin to move in the movable pin guide hole through the rack, so that the rack movable pin is inserted into or pulled out of one end of the phase positioning hole of the camshaft gear.

3. A camshaft gear and signal disc press-fitting tool as claimed in claim 1, wherein said camshaft radial compression assembly further comprises:

the threaded pull rod is arranged on a threaded pull rod mounting hole of the base in a manner of being perpendicular to the upper plane of the base, a locking section is arranged at the lower end of the threaded pull rod and is inserted into the threaded pull rod mounting hole, the threaded pull rod mounting hole is positioned on one side of the V-shaped positioning block and is positioned between the two V-shaped positioning notches, and threads are arranged at the upper section of the threaded pull rod;

the return spring is sleeved on the middle section of the threaded pull rod; and

the locking nut is screwed on the thread at the upper end of the threaded pull rod;

the through hole sleeve of the radial pressing block is arranged on the threaded pull rod and is positioned between the locking nut and the return spring, and the locking nut is rotated downwards to drive the radial pressing block to overcome the tension of the return spring to move downwards, so that the pressing cantilever of the radial pressing block presses the camshaft on the two V-shaped positioning notches.

4. A press fitting tool for a camshaft gear and a signal disc as claimed in claim 1, further comprising a press sleeve assembly disposed on the first guide block and the first guide block, the press sleeve assembly comprising:

the pressing sleeve guide base is arranged on the first guide sliding block and comprises a cylindrical hole which is superposed with the overlooking longitudinal center line of the base and a spring ring sinking groove which is annularly arranged on the outer side of the cylindrical hole and is concentric with the cylindrical hole;

the pressure cover, its one end is worn to establish in the cylindrical hole, and the pressure cover can be in its axis reciprocating motion is downthehole in the cylindrical, press the cover and include:

the clearance through groove hole is positioned right below the clearance cylindrical hole; and

a pressure transmission hole provided at the other end of the pressure sleeve;

the pressure transmission rod is arranged in the pressure transmission hole in a penetrating mode, and one end of the pressure transmission rod comprises a force transmission spring counter bore which is coaxial with the pressure transmission rod;

one end of the force transmission spring is inserted into the force transmission spring counter bore, and the other end of the force transmission spring abuts against the bottom of the pressure transmission hole; and

and one end of the return spring is arranged in the spring ring sinking groove, and the other end of the return spring is propped against the root part of the return flange of the pressing sleeve.

5. A press fitting tool for a camshaft gear and a signal disc as claimed in claim 5, further comprising an eccentric wheel assembly disposed at a front portion of the second guide slider, the eccentric wheel assembly comprising:

the component support is arranged on the upper plane of the front part of the second guide sliding block and comprises a through hole which is crossed and vertical to the overlooking longitudinal center line of the base;

the eccentric shaft penetrates through the through hole of the assembly support, an eccentric disc type flange is arranged at the end of the eccentric shaft, and a threaded hole is formed in the other end of the eccentric shaft; and

the handle is arranged on the threaded hole of the eccentric shaft, and the eccentric shaft can be driven to rotate by pulling the handle, so that the eccentric disc type flange deflects along with the rotation of the eccentric shaft.

6. A camshaft gear and signal disc press-fitting tool as claimed in claim 6, wherein the positioning shaft slider assembly further comprises:

the positioning shaft sliding block is arranged in the guide sliding groove and can longitudinally and horizontally move in the guide sliding groove; and

a positioning shaft supporter provided at a front portion of the positioning shaft slider, the positioning shaft supporter including:

the axis of the positioning shaft mounting hole is coaxial with the central axis of the puller bolt;

the guide pin mounting hole is arranged on one side of the positioning shaft mounting hole, the central axis of the guide pin mounting hole is parallel to the axis line of the positioning shaft mounting hole, the central axis of the guide pin mounting hole and the axis line of the positioning shaft mounting hole are positioned on the same horizontal plane, and the central axis of the guide pin mounting hole is coaxial with the central axis of the rack movable pin;

a stopper provided at one side of a rear portion of the positioning shaft support, an outer side surface of the stopper extending beyond the guide pin; and

and the compression spring counter bore is positioned below the positioning shaft mounting hole and positioned on one side back to the camshaft positioning block assembly, and the central axis of the compression spring counter bore is coincided with the central axis of the positioning shaft mounting hole in the overlooking direction.

7. A press fitting tool for a camshaft gear and a signal disc as claimed in claim 7, wherein the pressing sleeve assembly further comprises:

the spring guide rod is arranged at the front end of the pressing sleeve guide base and is positioned right below the cylindrical hole; and

the end face of the positioning shaft and the end face of the camshaft are always kept in a pressing state in the pressing process;

wherein the compressed length of the hold-down spring is greater than the length of the spring guide rod.

8. A tool for press-fitting a camshaft gear and a signal disc as set forth in claim 8, wherein the eccentric shaft is rotated by rotating the handle of the positioning shaft slider assembly, and the eccentric disc flange abuts against the stopper of the positioning shaft slider assembly, so that the positioning shaft slider assembly can move against the tension of the compression spring, and the end face of the positioning shaft is disengaged from the end face of the camshaft.

9. A press-fitting method for a camshaft gear and a signal disc, which adopts the press-fitting tool according to claim 1, wherein the press-fitting method comprises the following steps:

the camshaft is placed on the two V-shaped positioning notches of the V-shaped positioning block, and the camshaft is axially, radially and circumferentially positioned through the jacking bolt, the end limiting plate, the positioning shaft sliding block assembly and the circumferential positioning pin on the end surface of the positioning shaft;

the installation sections of a camshaft gear and a signal disc of the camshaft penetrate through the half-moon-shaped limiting holes and then extend out of the end limiting plate;

rotating a hand wheel of a gear ring shaft of the camshaft positioning block assembly to align a movable pin head of a movable pin of the rack with a guide pin of the positioning shaft sliding block assembly;

pulling a handle of the eccentric wheel assembly to enable the eccentric shaft to rotate clockwise, and contacting a limiting block at one side of a positioning shaft support of the positioning shaft sliding block assembly by using an eccentric disc type flange at the other end of the eccentric shaft to enable the positioning shaft sliding block assembly to integrally overcome the resistance of a compression spring of the pressing sleeve assembly and slide backwards, so that the end face of the positioning shaft is separated from the end face of the camshaft, and a sufficient mounting space is provided for the camshaft gear;

sleeving a camshaft gear on a positioning shaft of a positioning shaft sliding block assembly, and simultaneously inserting a guide pin into a phase positioning hole of the camshaft gear from one side;

loosening a handle of the eccentric wheel assembly to enable the positioning shaft sliding block assembly to slide forwards by means of the tension of a pressing spring of the pressing sleeve assembly, enabling the end face of the positioning shaft and the end face of the camshaft to be attached and pressed tightly again, and enabling the circumferential positioning pin to be inserted into the circumferential positioning hole of the end face of the camshaft again;

rotating a hand wheel of a gear ring shaft of the camshaft positioning block assembly to enable a movable pin head of a movable pin of the rack to be inserted from the other side of the phase positioning hole of the camshaft gear; and

applying external force to a pressure transmission rod of the pressing sleeve assembly, applying pressing force to the end face of the camshaft gear through a force transmission spring and a pressing sleeve, avoiding the positioning shaft support of the positioning shaft sliding block assembly by the pressing sleeve, positioning, and pressing the camshaft gear in place;

during the press mounting process, the camshaft always keeps the absolute positioning in the axial direction, the radial direction and the circumferential direction, the end face of the camshaft is always pressed and attached to the end face of the positioning shaft, the circumferential positioning pin is always inserted into the circumferential positioning hole, and the guide pin and the rack movable pin are always inserted into the cam shaft gear from two sides of the phase positioning hole of the cam shaft gear.

10. A method of press fitting a camshaft gear and a signal plate as claimed in claim 9, wherein the steps of claim 9 are repeated to press fit the signal plate into place.