CN210059843U

CN210059843U - Grooving boring bar device of double-suction centrifugal pump

Info

Publication number: CN210059843U
Application number: CN201920520288.3U
Authority: CN
Inventors: 何智东; 吴虹达; 吴川; 杨怀学; 叶明中; 陈林
Original assignee: Xinda Pump & Valve Co Ltd
Current assignee: Xinda Pump & Valve Co Ltd
Priority date: 2019-04-17
Filing date: 2019-04-17
Publication date: 2020-02-14
Anticipated expiration: 2029-04-17

Abstract

The utility model discloses a double suction centrifugal pump grooving boring bar device, which comprises a boring bar, a hand wheel driving mechanism positioned at the end part of the boring bar, a transmission mechanism connected with the hand wheel driving mechanism, a cutting cutter head mechanism connected with the transmission mechanism, and a positioning sleeve and a transmission disc which are arranged at the end part of the boring bar far away from the hand wheel driving mechanism, wherein the positioning sleeve is positioned between the cutting cutter head mechanism and the transmission disc; the device is convenient to disassemble and assemble, accurate in positioning, capable of realizing quick clamping and quick and accurate cutting, long in replacement time of the positioning sleeve, capable of realizing axial movement and wide in adaptive size range.

Description

Grooving boring bar device of double-suction centrifugal pump

Technical Field

The utility model relates to a double entry centrifugal pump technical field, concretely relates to double entry centrifugal pump grooving boring bar device.

Background

In the machining process, it is relatively common to carry out in-hole grooving by a common lathe, when grooving machining is carried out on a pump body, grooving is carried out by adopting a boring bar device with a boring cutter, the existing grooving boring bar device is inconvenient to disassemble and assemble, rapid clamping cannot be realized, a positioning mechanism is easy to wear, positioning is inaccurate, cutting feed cannot be accurately carried out, and the use performance is poor.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a double entry centrifugal pump grooving boring bar device to solve the problem that current grooving boring bar device dismouting is inconvenient, can not accurately carry out the cutting feed.

The utility model provides an above-mentioned technical problem's technical scheme as follows: the grooving and boring bar device of the double suction centrifugal pump comprises a boring bar, a hand wheel driving mechanism positioned at the end part of the boring bar, a transmission mechanism connected with the hand wheel driving mechanism, a cutting cutter head mechanism connected with the transmission mechanism, and a positioning sleeve and a transmission disc which are arranged at the end part of the boring bar far away from the hand wheel driving mechanism, wherein the positioning sleeve is positioned between the cutting cutter head mechanism and the transmission disc;

the hand wheel driving mechanism comprises a hand wheel, a support sleeve connected with the hand wheel and a push screw rod positioned in the support sleeve, the push screw rod is connected with the hand wheel, and a dial is arranged between the support sleeve and the hand wheel;

the transmission mechanism comprises a pushing sleeve which is positioned in the supporting sleeve and connected with the pushing screw rod and a pushing shaft which is connected to the end part of the pushing sleeve far away from the pushing screw rod;

the cutting cutter head mechanism comprises a first cutter head shaft and a second cutter head shaft which are respectively sleeved on the periphery of the pushing shaft, a cutter head connected between the first cutter head shaft and the second cutter head shaft and a cutting boring cutter assembly arranged in the cutter head, and the pushing shaft is abutted to the bottom end of the cutting boring cutter assembly.

Furthermore, the locating sleeve comprises a tapered bearing bush sleeved on the boring rod, a tapered expansion sleeve sleeved on the periphery of the tapered bearing bush and pressing pieces respectively connected to two ends of the tapered bearing bush, and the pressing pieces are abutted to end faces of the tapered expansion sleeve.

Furthermore, an oil filling hole is formed in the conical expansion sleeve, an oil guide hole communicated with the oil filling hole is formed in the conical bearing bush, an oil storage tank communicated with the bottom end of the oil guide hole is formed in the inner wall of the conical bearing bush, and a fixed anti-rotation part is arranged between the conical bearing bush and the conical expansion sleeve.

Furthermore, the transmission disc comprises a clamping jaw, a sliding sleeve arranged on the clamping jaw, and an elastic part and a positioning disc which are respectively connected to the two ends of the clamping jaw, wherein a locking screw used for fixing the sliding sleeve is arranged on the sliding sleeve, and a clamping piece is arranged on the inner wall of the clamping jaw and is matched with a clamping groove formed in the boring rod.

Furthermore, the cutting boring cutter assembly comprises a boring cutter box positioned in the cutter head and a boring cutter arranged at the end part of the boring cutter box, and the pushing shaft is abutted against the boring cutter box.

Furthermore, a groove with an inclined surface is formed in the pushing shaft, and the groove is matched with the boring cutter box.

Furthermore, the pushing shaft is connected in the pushing sleeve through a transmission pin, and a bearing is arranged between the pushing shaft and the pushing sleeve.

Further, the end face of the dial away from the support sleeve is connected with a conical bearing, and the conical bearing is sleeved on the end face of the first cutter head shaft away from the cutter head.

Further, a compression nut and a washer are arranged between the conical bearing and the first cutter head shaft.

Further, a gland is arranged on the outer wall of the conical bearing.

The utility model discloses following beneficial effect has: the groove cutting and boring rod device of the double suction centrifugal pump provided by the utility model has the advantages that after the positioning of the conical bearing and the positioning sleeve, the gland is pressed, the clamping transmission disc can realize accurate positioning, and the positioning effect is good; the transmission disc is clamped and disassembled quickly by clamping and loosening the clamping claws and the positioning disc; the lead screw drives the pushing sleeve by rotating the hand wheel to accurately read on the dial, and further drives the transmission shaft to move to a corresponding position, so that the cutter box drives the boring cutter to feed the required cutting amount, the cutting amount is accurate, the control is reliable, and the rapid and accurate cutting operation is realized; when the positioning sleeve is worn, automatic centering is realized through the pressing conical expansion sleeve and the conical bearing bush in the positioning sleeve, and the accurate positioning effect is ensured; when the end face of the conical bearing bush of the positioning sleeve is propped against the compression nut, the conical expansion sleeve cannot be further expanded, the conical expansion sleeve needs to be replaced, the replacement time of the positioning sleeve is prolonged, the replacement period is long, the use performance of the positioning sleeve is improved, and after the lubricating oil is filled into the conical bearing bush of the positioning sleeve, an oil film is formed inside the positioning sleeve, the conical bearing bush can axially and freely slide, and the size range of positioning is wide.

Drawings

FIG. 1 is a schematic view of the structure of the present invention

FIG. 2 is a schematic view of the structure of the positioning sleeve of the present invention;

FIG. 3 is a schematic view of the structure of the driving plate of the present invention;

FIG. 4 is a schematic view taken along line B-B in FIG. 1;

the reference numerals shown in fig. 1 to 4 are respectively expressed as: 1-boring bar, 2-positioning sleeve, 3-driving disc, 4-hand wheel, 5-supporting sleeve, 6-pushing screw rod, 7-dial, 8-pushing sleeve, 9-pushing shaft, 10-first cutter shaft, 11-second cutter shaft, 12-cutter head, 13-cutting and boring cutter component, 20-conical bearing bush, 21-conical expansion sleeve, 22-pressing piece, 23-oil injection hole, 24-oil guide hole, 25-oil storage tank, 26-fixed anti-rotation piece, 31-claw, 32-sliding sleeve, 33-elastic piece, 34-positioning disc, 35-snap fastener, 131-boring cutter box, 132-boring cutter, 90-groove, 14-driving pin, 15-bearing, 16-conical bearing, 17-pressing nut, 18-gasket, 19-gland.

Detailed Description

The principles and features of the present invention are described below in conjunction with the following drawings, the examples given are only intended to illustrate the present invention and are not intended to limit the scope of the present invention.

As shown in fig. 1, the grooving and boring bar device of the double suction centrifugal pump comprises a boring bar 1, a hand wheel driving mechanism positioned at the end part of the boring bar 1, a transmission mechanism connected with the hand wheel driving mechanism, a cutting cutter head mechanism connected with the transmission mechanism, and a positioning sleeve 2 and a transmission disc 3 which are arranged at the end part of the boring bar 1 far away from the hand wheel driving mechanism, wherein the positioning sleeve 2 is positioned between the cutting cutter head mechanism and the transmission disc 3. The hand wheel driving mechanism is an active part and is used for driving the transmission mechanism to move and transmitting the transmission force to the cutting cutter head mechanism, so that the cutting cutter head 12 assembly is driven to perform corresponding cutting operation, and the operation is simple, convenient and fast.

The hand wheel driving mechanism comprises a hand wheel 4, a supporting sleeve 5 connected with the hand wheel 4 and a pushing screw rod 6 positioned inside the supporting sleeve 5, the pushing screw rod 6 is connected with the hand wheel 4, and a dial 7 is arranged between the supporting sleeve 5 and the hand wheel 4. The hand wheel 4 is matched with the dial 7 to control the displacement of the push screw rod 6, so that the feed cutting amount of the cutting cutter head mechanism is controlled, and the feed cutting amount is matched with the index of the dial 7. During processing, a user rotates the hand wheel 4 to accurately read on the dial 7, so that the screw rod drives the transmission mechanism to move.

The transmission mechanism comprises a pushing sleeve 8 which is positioned in the supporting sleeve 5 and connected with the pushing screw rod 6 and a pushing shaft 9 which is connected with the end part of the pushing sleeve 8 far away from the pushing screw rod 6. The pushing screw rod 6 drives the pushing sleeve 8 to move, and further drives the transmission shaft to move to a corresponding position, so that the cutter box drives the boring cutter 132 to feed the required cutting amount.

The cutting cutter head mechanism comprises a first cutter head shaft 10 and a second cutter head shaft 11 which are respectively sleeved on the periphery of the pushing shaft 9, a cutter head 12 connected between the first cutter head shaft 10 and the second cutter head shaft 11 and a cutting boring cutter assembly 13 arranged in the cutter head 12, and the pushing shaft 9 is abutted to the bottom end of the cutting boring cutter assembly 13. The cutting boring cutter assembly 13 includes a boring cutter box 131 in the cutter head 12 and boring cutters 132 provided at an end of the boring cutter box 131, and the push shaft 9 abuts against the boring cutter box 131. Wherein, the pushing shaft 9 is provided with a groove 90 with an inclined surface, and the groove 90 is matched with the boring cutter box 131. The cutter head is provided with a guide screw, when the hand wheel 4 controls the pushing screw rod 6 to move so as to drive the pushing shaft 9 to move, the inclined surface of the groove 90 is abutted to the boring cutter box 131, the height of the contact surface of the inclined surface of the groove 90 to the boring cutter box 131 is increased along with the increase of the movement amount, and further the feed cutting amount of the boring cutter 132 is increased, otherwise, when the hand wheel 4 controls the pushing screw rod 6 to move in the opposite direction, the contact height of the boring cutter box 131 and the inclined surface of the groove 90 is reduced along with the contact height until the contact height is matched with the bottom of the groove 90, and the feed cutting amount of the boring cutter 132 is reduced. The control is accurate, convenient and reliable.

For better play the positioning action, the location of avoiding behind the 2 wearing and tearing of position sleeve is inaccurate, as shown in fig. 2, the utility model discloses in, position sleeve 2 establishes taper bush 20, the cover on boring bar 1 including the cover and establishes taper bush 20 outlying toper expands cover 21 and connects respectively and compress tightly a 22 at taper bush 20 both ends, and compress tightly the terminal surface looks butt that a 22 and toper expand cover 21. The tapered bearing bush 20 is sleeved on the periphery of the boring rod 1, the diameter of the tapered bearing bush is matched with that of the boring rod 1, the matching connection reliability can be improved, the radial positioning of the positioning sleeve 2 is realized through the pressing piece 22, the circumferential positioning of the positioning sleeve 2 is realized through the fixed anti-rotation piece 26, the positioning accuracy is guaranteed, the relative rotation between the tapered expansion sleeve 21 and the tapered bearing bush 20 is avoided, and the fixed anti-rotation piece 26 adopts an anti-rotation pin. When the positioning sleeve 2 is worn, the pressing piece 22 presses the conical expansion sleeve 21 and the conical bearing bush 20 to realize automatic centering and positioning of the positioning sleeve 2, so that inaccurate positioning after wear is avoided; and after the position sleeve 2 is worn and torn, through compressing tightly toper cover 21 and toper axle bush 20 that expands, the toper expands that cover 21 further expands tightly for position sleeve 2 still can continue to use, prolongs the life of position sleeve 2, and the top dies need only be changed when compressing tightly the unable further toper cover 21 that expands of piece 22 when toper axle bush 20 terminal surface, effectual extension position sleeve 2's replacement cycle.

In order to facilitate the axial slip of position sleeve 2, the utility model discloses in, seted up oil filler point 23 in the toper is expanded to overlap 21, seted up in the toper axle bush 20 and led oilhole 2 that is linked together with oil filler point 23, and the inner wall of toper axle bush 20 sets up the oil storage tank 25 that is linked together with leading oilhole 24 bottom, is provided with fixed rotation-proof piece 26 between toper axle bush 20 and the toper is expanded to overlap 21. After the internally tapered bearing bush 20 of the locating sleeve 2 is filled with lubricating oil, an oil film is formed inside the locating sleeve, the locating sleeve can axially and freely slide, and the locating size range is wide.

In order to improve the quick clamping ability, as shown in fig. 3, the utility model discloses in, driving plate 3 includes jack catch 31, sets up the sliding sleeve 32 on jack catch 31 and connects elastic component 33 and the positioning disk 34 at jack catch 31 both ends respectively, is provided with the locking screw who is used for fixed sliding sleeve 32 on the sliding sleeve 32, and the inner wall of jack catch 31 is provided with buckle piece 35, buckle piece 35 with set up the draw-in groove looks adaptation on boring bar 1. The clamping jaw 31 is connected to the periphery of the boring rod 1 in a matching mode, and a clamping groove is formed in the boring rod 1 and matched with the clamping piece 35 on the clamping jaw 31. The positioning disc 34 is provided with a spline which is a spline disc, and the end part of the clamping jaw 31 is matched with the spline on the positioning disc 34 to realize assembling and positioning. The elastic element 33 is a return spring, one end of which is connected to the jaw 31, and the other end extends into the shaft of the boring bar 1. The locking assembly is used for positioning the position of the sliding sleeve 32, the sliding sleeve 32 is locked or loosened through the locking assembly, the sliding sleeve 32 moves on the clamping jaws 31, the clamping jaws 31 and the positioning disc 34 are further clamped and loosened, and the transmission disc 3 is rapidly clamped and disassembled.

In order to facilitate the movement of the pushing sleeve 8, the utility model discloses in, push shaft 9 passes through drive pin 14 to be connected in pushing sleeve 8, and is provided with bearing 15 between pushing shaft 9 and the pushing sleeve 8. The friction force can be effectively reduced through the bearing 15, and the moving smoothness can be improved.

In order to improve the stability and the fastness of clamping, the utility model discloses in, the terminal surface that calibrated scale 7 was kept away from to support cover 5 is connected with conical bearing 16, and the 16 covers of conical bearing establish on the terminal surface that blade disc 12 was kept away from to first blade disc axle 10. A compression nut 17 and a washer 18 are arranged between the conical bearing 16 and the first cutter head spindle 10. The outer wall of the conical bearing 16 is provided with a gland 19. The tightness of the connection is improved by the compression nut 17 and the washer 18, avoiding loosening. When the clamping device is installed and positioned, the pressing cover 19 is pressed, and the transmission disc 3 is clamped, so that the whole reliable clamping can be completed.

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.

Claims

1. The grooving and boring bar device of the double suction centrifugal pump is characterized by comprising a boring bar (1), a hand wheel driving mechanism positioned at the end part of the boring bar (1), a transmission mechanism connected with the hand wheel driving mechanism, a cutting cutter head mechanism connected with the transmission mechanism, and a positioning sleeve (2) and a transmission disc (3) which are arranged at the end part of the boring bar (1) far away from the hand wheel driving mechanism, wherein the positioning sleeve (2) is positioned between the cutting cutter head mechanism and the transmission disc (3);

the hand wheel driving mechanism comprises a hand wheel (4), a supporting sleeve (5) connected with the hand wheel (4) and a pushing screw rod (6) positioned in the supporting sleeve (5), the pushing screw rod (6) is connected with the hand wheel (4), and a dial (7) is arranged between the supporting sleeve (5) and the hand wheel (4);

the transmission mechanism comprises a pushing sleeve (8) which is positioned in the supporting sleeve (5) and connected with the pushing screw rod (6) and a pushing shaft (9) which is connected to the end part, far away from the pushing screw rod (6), of the pushing sleeve (8);

the cutting cutter head mechanism comprises a first cutter head shaft (10) and a second cutter head shaft (11) which are sleeved on the periphery of the pushing shaft (9) respectively, a cutter head (12) connected between the first cutter head shaft (10) and the second cutter head shaft (11) and a cutting boring cutter assembly (13) arranged in the cutter head (12), and the pushing shaft (9) is abutted to the bottom end of the cutting boring cutter assembly (13).

2. The grooving boring bar device of the double suction centrifugal pump according to claim 1, wherein the locating sleeve (2) comprises a tapered bearing bush (20) sleeved on the boring bar (1), a tapered expansion sleeve (21) sleeved on the periphery of the tapered bearing bush (20), and pressing pieces (22) respectively connected to two ends of the tapered bearing bush (20), and the pressing pieces (22) abut against end faces of the tapered expansion sleeve (21).

3. The grooving boring bar device of the double suction centrifugal pump according to claim 2, wherein an oil injection hole (23) is formed in the conical expansion sleeve (21), an oil guide hole (24) communicated with the oil injection hole (23) is formed in the conical bearing bush (20), an oil storage groove (25) communicated with the bottom end of the oil guide hole (24) is formed in the inner wall of the conical bearing bush (20), and a fixing anti-rotation piece (26) is arranged between the conical bearing bush (20) and the conical expansion sleeve (21).

4. The grooving boring bar device of the double suction centrifugal pump according to claim 1, wherein the transmission disc (3) comprises a jaw (31), a sliding sleeve (32) arranged on the jaw (31), and an elastic member (33) and a positioning disc (34) which are respectively connected to two ends of the jaw (31), a locking screw for fixing the sliding sleeve (32) is arranged on the sliding sleeve (32), a snap sheet (35) is arranged on the inner wall of the jaw (31), and the snap sheet (35) is matched with a snap groove arranged on the boring bar (1).

5. The double-suction centrifugal pump grooving boring bar device of claim 1, wherein the cutting boring tool assembly (13) comprises a boring tool box (131) located inside a cutter head (12) and a boring tool (132) provided at an end of the boring tool box (131), the pushing shaft (9) abutting against the boring tool box (131).

6. The grooving boring bar device of the double suction centrifugal pump according to claim 5, wherein the pushing shaft (9) is provided with a groove (90) having an inclined surface, and the groove (90) is matched with the boring cutter box (131).

7. The slot-cutting boring bar device of the double suction centrifugal pump according to claim 6, characterized in that the pushing shaft (9) is connected in a pushing sleeve (8) by a driving pin (14), and a bearing (15) is arranged between the pushing shaft (9) and the pushing sleeve (8).

8. The grooving boring bar device of the double suction centrifugal pump according to claim 6, wherein a tapered bearing (16) is connected to an end surface of the support sleeve (5) far away from the dial (7), and the tapered bearing (16) is sleeved on an end surface of the first cutter shaft (10) far away from the cutter (12).

9. The double suction centrifugal pump grooving boring bar device of claim 8, wherein a compression nut (17) and a washer (18) are provided between the conical bearing (16) and the first cutter head shaft (10).

10. The slot-cutting boring bar device of the double suction centrifugal pump according to claim 9, characterized in that the outer wall of the conical bearing (16) is provided with a gland (19).