CN101898293B

CN101898293B - Method for surface treatment of encloser inner wall

Info

Publication number: CN101898293B
Application number: CN201010209747XA
Authority: CN
Inventors: 许敏田
Original assignee: ZHEJIANG SHIMGE PUMP INDUSTRY Co Ltd
Current assignee: Zhejiang Shimge Pump Co Ltd
Priority date: 2010-06-25
Filing date: 2010-06-25
Publication date: 2012-05-23
Anticipated expiration: 2030-06-25
Also published as: CN101898293A

Abstract

The invention discloses a method for surface treatment of an encloser inner wall, which belongs to mechanical processing methods. The surface of the existing encloser inner wall is not bright and clean enough, and precipitates can be precipitated on the surface of the encloser inner wall easily to influence the normal operation of a pump. An encloser is formed by stretching, and the surface of an outer wall of an encloser main body is turned out; then a clamp splice inosculated with the surface of the outer wall of the encloser main body is used for clamping the encloser main body, a flange face of the encloser is pressed on the clamp splice by using a pressure plate, and simultaneously the pressure plate is used for pressing a small end face; the surface of the inner wall of the encloser main body is reamed into a mirror plane by using a reamer which is fed into the encloser main body from one end of an opening of the encloser; and the bottom surface is leveled, a bearing block is welded on the bottom surface and the coaxiality of a bearing block hole and an encloser axis is corrected in turn. By using the method, the surface of the encloser inner wall is reamed into the mirror plane to reduce the adhesive force of the precipitates on the surface of the encloser inner wall, so the pump can use the flowage of a conveying medium during working to wash away the precipitates so as to prevent the precipitates from being precipitated on the surface of the encloser inner wall and ensure the normal operation of the pump.

Description

A kind of method for surface treatment of encloser inner wall

Technical field

The invention belongs to machining process, specifically is a kind of method for surface treatment of encloser inner wall.

Background technology

Case is the critical component of canned motor pump, is prone to produce sediments such as incrustation scale when especially canned motor pump is used for the delivering hot water, but owing to the bright and clean inadequately normal operation that causes sediment to be deposited on encloser inner wall surface influence pump in existing encloser inner wall surface.

Summary of the invention

The technical problem that the present invention will solve and the technical assignment of proposition are that to overcome existing encloser inner wall surface bright and clean inadequately and cause the defective of precipitate in the normal operation of encloser inner wall surface influence pump; A kind of method for surface treatment of encloser inner wall is provided, avoids sediment to be deposited on the normal operation of encloser inner wall surface influence pump in order to process the higher encloser inner wall surface of fineness.For this reason, the present invention adopts following technical scheme:

A kind of method for surface treatment of encloser inner wall; The main body of said case is cylindric; One end of said case is uncovered and have small end face and a flange face, the other end of said case have be used to weld the bottom surface of bearing block and by this bottom surface to the through hole that the case axle center extends to form, it is characterized in that:

Described case is formed by stretching, and car goes out the outer wall of said case main body;

Use the outer wall of the fixture block clamping case main body that the outer wall with said case main body matches afterwards, and with pressing plate with the flange face pressure holding of said case on described fixture block, use pressing plate pressure holding small end face simultaneously;

Through the feeding in the main body of said case of the uncovered end of said case the inwall of case main body is hinged into minute surface with reamer again;

The axiality that flattens the bottom surface successively at last, on the bottom surface, welds bearing block and correct bearing saddle bore and said case axle center.

As the optimization technique measure; Described leveling bottom surface is that described case is enclosed within on the bed die; Minute surface that utilization is processed into and the periphery of bed die location are realized the perpendicularity of bottom surface with respect to the case axle center with the lower surface of a mold with the bottom surface pressure holding again on the upper surface of bed die.Further, with the lower surface of mold with the upper surface of bottom surface pressure holding at bed die on the time to the stroke location of said mold, bed die; To be the minute surface that is hinged into of first clamping carry out the secondary Vehicle Processing and described flange face machined the outer wall of case main body the axiality in described rectification bearing saddle bore and said case axle center, and the outer wall of clamping case main body is to bearing saddle bore with small end face machines and flange face is carried out the secondary Vehicle Processing afterwards.

The invention has the beneficial effects as follows:

1, utilize reamer that the inwall (being encloser inner wall of the present invention) of case main body is hinged into the minute surface with higher fineness; Reduce the adhesive force of sediment at encloser inner wall; Can make pump when work, utilize flowing of pumped (conveying) medium that the sediment that produces is produced souring and avoids sediment to be deposited on encloser inner wall thus; Thereby guarantee the normal operation of pump, prolong the service life of pump.

2, rational deployment manufacturing procedure; When realizing processing the encloser inner wall of higher fineness; Guarantee the perpendicularity in small end face, flange face, bottom surface and the case axle center of case; Thereby guarantee that the bearing saddle bore of welding and the axiality and the pump core in case axle center are installed on the accuracy in the case, make the pump running steadily.

Description of drawings

Fig. 1 is the structural representation of the related case of the present invention.

Fig. 2 is that the present invention implements the used clamping device of hinge processing to case.

Fig. 3 places the sketch map that utilizes reamer the encloser inner wall surface to be implemented hinge processing on the clamping device shown in Figure 2 with case.

Fig. 4 is the present invention implements leveling to the case bottom surface a apparatus for leveling.

Fig. 5 is an apparatus for leveling shown in Figure 4 local enlarged diagram when leveling is implemented in the case bottom surface.

Label declaration among the figure:

The 1-case, the 11-main body, 12-is uncovered, 13-small end face, 14-flange face, 15-bearing block, 16-bottom surface, 17-through hole, the outer wall of 18-case main body, the inwall of 19-case main body, 110-bearing saddle bore, n-n-case axle center;

The 2-fixture block, 3-pressing plate, the 31-first pressure holding face, the 32-second pressure holding face, 4-reamer;

The 5-bed die, the periphery of 51-bed die, the upper surface of 52-bed die, 6-mold, the lower surface of 61-mold, 71, the 72-upper limit position block, 81, the 82-lower position block.

The specific embodiment

Below in conjunction with Figure of description the present invention is further specified.

At first the structure to the related case of the present invention describes: the related case of the present invention 1 is as shown in Figure 1; Its main body 11 is cylindric; One of which end uncovered 12 and have small end face 13 and flange face 14, its other end have and are used to weld the bottom surface 16 of bearing block 15 and the through hole 17 that is extended to form to case axle center n-n by this bottom surface 16.The case of this structure; Be used to install the pump core in its cylindrical body 11; Therefore, guarantee that the perpendicularity of small end face 13, flange face 14, bottom surface 16 and the case axle center n-n of case 1, the bearing saddle bore 110 of welding and the axiality of case axle center n-n and the accuracy that the pump core is installed in the case are to guarantee that the pump running is basic stably.

The present invention implements through following method for this reason:

Case 1 is the moulding of material drawn with SUS304 and gets blank through 1050 ° of abundant tempering of C, and car goes out outer wall 18 surfaces of case main body; So that implement postorder processing with the outer wall surface location;

Use fixture block 2 that the outer wall 18 with the case main body matches (referring to Fig. 2 afterwards; The diagram fixture block is two; It is poroid that clamping part on every is semicircle) outer wall 18 of clamping case main body; And with pressing plate 3 (shown in Figure 2 is the first pressure holding face 31 of pressing plate) with flange face 14 pressure holdings of case on the upper surface of fixture block 2, use pressing plate 3 (shown in Figure 2 be the second pressure holding face 32 of pressing plate) pressure holding small end face 13 simultaneously; After the inwall of case main body machines, discharge case according to backward;

Use reamer 4 (referring to Fig. 3) inwall 19 (being encloser inner wall of the present invention) of case main body to be hinged into minute surface again through the feeding in the main body of case of uncovered 12 1 ends of case; Because the outer wall of case main body 18 is through processing, so the outer wall of clamping case main body adds the inwall that can guarantee the case main body man-hour, the outer wall of case main body and the axiality in case axle center to the inwall of case main body;

The axiality that flattens bottom surface 16 successively at last, on bottom surface 16, welds bearing block 15 and correct bearing saddle bore 110 and said case axle center n-n.

Concrete; Referring to Fig. 4, Fig. 5; The leveling bottom surface is that case 1 is enclosed within on the bed die 5; The minute surface that utilization is processed into and the periphery of bed die 51 location, the lower surface 61 of using mold 6 again with bottom surface 16 pressure holdings (press force can adopt hydraulic press, and bed die 5, mold 6 are fixed on the hydraulic press as requested and get final product) on the upper surface 52 of bed die 5, realize bottom surface 16 with respect to the perpendicularity of case axle center n-n (in order to guarantee machining accuracy; The depth of parallelism of the lower surface 61 of the upper surface 52 of bed die, mold can be controlled in the 0.01mm during work, and the upper surface 52 of bed die can be controlled in the 0.01mm with the perpendicularity of the periphery 51 of bed die).Further; With the lower surface 61 of mold with bottom surface 16 pressure holdings in 52 last times of upper surface of bed die stroke location (upper

limit position block

71,72 and

lower position block

81,82 through left and right both sides position) to mold 6, bed die 5; Avoid the pressure holding excessive (in order to guarantee precision, upper and lower spacing of left and right both sides even contact that will put in place simultaneously during work) on the upper surface of bed die time of lower surface with mold with the bottom surface pressure holding.To be the minute surface that is hinged into of first clamping carry out the secondary Vehicle Processing and flange face 14 machined the outer wall 18 of case main body the axiality of correcting bearing saddle bore 110 and case axle center n-n; 18 pairs of bearing saddle bores of outer wall 110 of clamping case main body machine with small end face 13 and flange face 14 are carried out the secondary Vehicle Processing afterwards; Guarantee the perpendicularity of small end face 13, flange face 14, bottom surface 16 and the case axle center n-n of case thus; Thereby guarantee that bearing saddle bore 110 and axiality and the pump core of case axle center n-n are installed on the accuracy in the case, make the pump running steadily.

As an example; According to this method; With case main body external diameter is that Φ 39.94-39.96mm, case height overall are that inner major diameter is that the main body external diameter is Φ 40.70mm before Φ 39.39mm, the mirror finish before 74mm, the mirror finish; Inner major diameter is the specification requirement of Φ 39.50mm after the mirror finish, and can select diameter for use is the expansion reamer of Φ 39.4-39.525mm, processes and gets with the amount of feeding that 300-700 rev/min rotating speed and 0.1-0.3mm/ change.The Vehicle Processing that this method is related, available numerically controlled lathe is accomplished.

Claims

1. method for surface treatment of encloser inner wall; The main body (11) of said case (1) is cylindric; One end of said case (1) uncovered (12) and have small end face (13) and flange face (14); The other end of said case (1) have the bottom surface (16) that is used to weld bearing block (15) and by this bottom surface (16) to the through hole (17) that case axle center (n-n) extends to form, it is characterized in that:

Described case (1) is formed by stretching, and car goes out the outer wall (18) of said case main body;

Use the outer wall (18) of fixture block (2) the clamping case main body that the outer wall (18) with said case main body matches afterwards; And with pressing plate (3) with flange face (14) pressure holding of said case (1) on described fixture block (2), use pressing plate (3) pressure holding small end face (13) simultaneously;

Use reamer (4) inwall (19) of case main body to be hinged into minute surface again through the feeding in the main body (11) of said case (1) of uncovered (12) one ends of said case (1);

The axiality that flatten bottom surface (16) at last successively, (16) is gone up welding bearing block (15) and corrected bearing saddle bore and said case axle center (n-n) in the bottom surface.

2. a kind of method for surface treatment of encloser inner wall according to claim 1; It is characterized in that described leveling bottom surface (16) is that described case (1) is enclosed within on the bed die (5); Minute surface that utilization is processed into and the periphery of bed die (51) location use the lower surface (61) of a mold (6) that bottom surface (16) pressure holding is gone up the perpendicularity of realization bottom surface (16) with respect to case axle center (n-n) in the upper surface (52) of bed die again.

3. a kind of method for surface treatment of encloser inner wall according to claim 2, it is characterized in that with the lower surface (61) of mold with bottom surface (16) pressure holding in upper surface (52) last time of bed die stroke location to said mold (6), bed die (5).

4. according to claim 2 or 3 described a kind of method for surface treatment of encloser inner wall; To be the minute surface that is hinged into of first clamping carry out the secondary Vehicle Processing and described flange face (14) machined the outer wall (18) of case main body the axiality that it is characterized in that described rectification bearing saddle bore and said case axle center, and the outer wall of clamping case main body (18) machines bearing saddle bore (110) and small end face (13) and flange face (14) is carried out the secondary Vehicle Processing afterwards.