CN201006601Y

CN201006601Y - Pressing cover tools

Info

Publication number: CN201006601Y
Application number: CNU2007200337792U
Authority: CN
Inventors: 陈忠民
Original assignee: Nanjing Jincheng Machinery Co Ltd
Current assignee: Nanjing Jincheng Machinery Co Ltd
Priority date: 2007-01-24
Filing date: 2007-01-24
Publication date: 2008-01-16
Anticipated expiration: 2017-01-24

Abstract

The utility model discloses a press sheath tool, for pressing and assembling a liner into a hole, wherein a support is provided with a through hole vertical to the bottom of a base, the press rod portion and the press head portion of the press rod are arranged with a limit step between, the press rod portion is mounted in the liner, which can axially move along the liner, a nut can be adjustably mounted on the upper end of the press rod portion, the upper and lower ends of the spring are respectively contacted on the end faces of the liner and the nut, the press head portion is clearance fit with the inner diameter of a work-piece, the press head portion is arranged with a blind hole radial, the blind hole contains a small spring and a steel ball, the outlet of the blind hole is reduced for avoiding dropping the steel ball, the lower end face of the limit step can be arranged with a cam for adjusting installment clearance. The utility model can avoid heating or cooling device, simplify operation, improve working efficiency, support batch production, and avoid deformation of work-piece in hand-operated hammer process or the like, thereby improving assembly accuracy.

Description

The gland instrument

One, technical field

The utility model relates to a kind of frock, and a kind of specifically being convenient to is pressed into gland instrument in the workpiece installing hole with lining, and it is applicable to the occasion that installation accuracy is had relatively high expectations.

Two, background technology

In mechanical installation process, the installation of lining is a loaded down with trivial details job, because lining and the workpiece that is mated are generally transition or interference fit, during installation, must use external force to impact or push along the lining axis is pressed into lining in the workpiece, install for the equipment that required precision is not high, generally use the wooden mallet pad on axle sleeve, to slow down and impact and the destruction bush end face, knock wooden mallet with iron hammer again lining is squeezed into; In addition, common heating or cooling method are in addition promptly utilized the principle of expanding with heat and contracting with cold mounting bush, but two kinds of methods all must heat or the cooling workpiece, not only need use heating or cooling device, and complex operation, need veteran workman to operate.In addition, above several method all may make lining and workpiece deform, and has reduced the quality of fit of workpiece, so only be applicable to the less demanding occasion of installation accuracy.

Three, utility model content

Technical problem to be solved in the utility model is in order to overcome the deficiencies in the prior art, a kind of installation accuracy height to be provided, special-purpose gland instrument easy to use, and it is simple to operate, has improved operating efficiency greatly.

A kind of gland instrument described in the utility model, it is characterized in that: it comprises base, support, lining, spring, nut and pressure bar, described support is fixed on the base that is used for place work piece, has a vertical through hole on the support, lining is installed in this through hole, pressure bar comprises the depression bar portion of upside and the pressure head portion of downside, be provided with limited step between depression bar portion and the pressure head portion, depression bar portion is contained in the lining and can moves along its axis, nut is adjustable and be contained in the upper end of depression bar portion, and spring is against respectively on the end face of lining and nut at two ends up and down.

Between general pressure head portion and the workpiece diameter is matched in clearance, and this is in pressure head portion and radially is provided with blind hole, and little spring and steel ball are housed in blind hole, and the blind hole exit has the closing in that prevents that steel ball from coming off.

Can also be provided with the boss that is used to adjust assemblage gap on the limited step lower surface, the external diameter of this boss is slightly less than the external diameter of lining, and the height of boss is the assemblage gap between lining and the workpiece end face.

Operation principle: at first, this instrument is placed on press or the hydraulic press platform, workpiece to be installed is placed on the base of instrument stably, lining is enclosed within the pressure head portion of pressure bar, and its upper surface contacts with boss, owing to radially be provided with blind hole in pressure head portion, little spring and steel ball are housed in the blind hole, the blind hole exit has the closing in that prevents that steel ball from coming off, and steel ball will tightly prop up sleeve inner surface under the little spring effect like this, prevents that lining is from the landing of pressure head portion.Be adjusted to coaxial between workpiece and the lining, then move press handle (or pressing the hydraulic press starting switch) downwards, the main shaft of press (or hydraulic press) pushes pressure bar downwards, lining (can suitably be coated with a little lubricants is beneficial to be pressed into) moves down with pressure bar, and be pressed in the workpiece mounting hole gradually, in case limited step contacts with workpiece end face, main shaft is return (for hydraulic press after unclamping the press handle, adjust in advance the contact pressure put in place the back main shaft can return automatically and close), then pressure bar moves on again under spring action.Because boss contacts with the lining upper surface, limited step contacts with workpiece end face when finishing and compress, so the gap between boss and limited step promptly is the assemblage gap between lining upper surface and the workpiece upper surface.

The utility model need not to use heating or cooling device, has simplified operation, and the inexperienced operator also can be competent at, and has improved operating efficiency, is suitable for large batch of installation; Avoid the manual situation that may occur workpiece deformation in the installation process such as knock to occur simultaneously, improved the installation accuracy height.

Four, description of drawings

Fig. 1 is a working state schematic representation of the present utility model;

Fig. 2 is a structural representation of the present utility model;

Fig. 3 is that the A-A of Fig. 2 is to profile.

Five, the specific embodiment

As depicted in figs. 1 and 2, a kind of gland instrument described in the utility model, it comprises base 1, support 2, lining 3, spring 4, nut 5 and pressure bar 6, during work, the base 1 of gland instrument firmly is installed on the platform of press or hydraulic press 16, support 2 is fixed on the base 1 that is used for place work piece, has a vertical through hole on the support 2, lining 3 is installed in this through hole, pressure bar 6 comprises the depression bar portion 7 of upside and the pressure head portion 8 of downside, be provided with limited step 9 between depression bar portion 7 and the pressure head portion 8, depression bar portion 7 can move axially it along lining 3 with lining 3 matched in clearance, the upper end of depression bar portion 7 has screw thread, and two fastening screw nut 5 top loadings also can be regulated its position, and spring is against respectively on the end face of lining 3 and nut 5 at two ends about in the of 4.Adopt matched in clearance between pressure head portion 8 and the workpiece diameter, as Fig. 2, have radial blind holes 10 in pressure head portion 8, little spring 11 and steel ball 12 are housed in the blind hole 10, blind hole 10 closes up to prevent that steel ball 12 from coming off when working.When having assemblage gap between lining to be pressed into 14 and its workpiece 15 upper surfaces when requiring, need on limited step 9 lower surfaces, be provided with the boss 13 that is used to adjust assemblage gap, the external diameter of this boss 13 is slightly less than the external diameter of lining 3, boss 13 just can enter the workpiece installing hole and not interrupted like this, and the height m of boss 13 is the assemblage gap m between lining 14 and workpiece 15 end faces.

Claims

1. gland instrument, it is characterized in that: it comprises base (1), support (2), lining (3), spring (4), nut (5) and pressure bar (6), described support (2) is fixed on the base (1) that is used for place work piece, has a vertical through hole on the support (2), lining (3) is installed in this through hole, pressure bar (6) comprises the depression bar portion (7) of upside and the pressure head portion (8) of downside, be provided with limited step (9) between depression bar portion (7) and the pressure head portion (8), depression bar portion (7) is contained in the lining (3) and can moves along its axis, the adjustable upper end that is contained in depression bar portion (7) of nut (5), spring (4) two ends up and down are against respectively on the end face of lining (3) and nut (5).

2. gland instrument according to claim 1, it is characterized in that: matched in clearance between pressure head portion (8) and the workpiece diameter, radially be provided with blind hole (10) in pressure head portion (8), little spring (11) and steel ball (12) are housed in blind hole (10), and blind hole (10) exit has the closing in that prevents that steel ball (12) from coming off.

3. gland instrument according to claim 1 and 2 is characterized in that: limited step (9) lower surface is provided with the boss (13) that is used to adjust assemblage gap.