CN205414498U - Tight jig of gland locating clip - Google Patents

Abstract

This patent discloses a gland positioning and clamping drilling mold, which relates to a positioning drilling mold; the gland positioning and clamping drilling mold includes a base, a turntable, a pressing table, a drilling mold and a cam; the cam is an eccentric cam, including a rotating shaft and a cam. The convex edge, and the rotating shaft and the convex edge are both cylinders, and the convex edge is set eccentrically on the rotating shaft; the cam is connected to the base in rotation, the turntable is set above the base, and is spline connected with the driving end of the cam; the upper end of the pressing table is provided with a truncated cone The central positioning boss and the peripheral positioning ring, the center of the peripheral positioning ring is provided with a positioning taper hole, and the lower end of the pressing table is connected with a driving rod through a thread; The outer periphery of the edge is in contact; the drilling mold is set above the pressing table and fixedly connected to the base, and the drilling mold is provided with a drilling mold positioning hole. This patent intends to improve processing precision and simplify process steps.

Description

A Gland Positioning and Clamping Drilling Die

technical field

The utility model relates to a positioning drilling mold, in particular to a gland positioning and clamping drilling mold.

Background technique

Some compression parts are often used in auto parts, among which there is a gland with a sealing ring. Now due to technological upgrading, it is necessary to improve the processing accuracy and production progress of the gland, especially the position accuracy of the hole on the gland; due to the original Some drilling processes are as follows: draw a line on the workpiece first, and then clamp the end cover. In order to ensure better self-locking performance when clamping the gland, a screw clamping device is now used, that is, bolts are used to clamp the end cover. Realize the advancement of the clamping surface and clamp the workpiece. Because the bolts have good self-locking properties, the clamping effect is good; but the screw clamping device adopts the characteristics of bolt drive, which makes the clamping stroke too large, so that The clamping process is time-consuming, and in order to balance the clamping force, it is generally driven by multiple bolts, so when clamping the workpiece, the bolts must be tightened one by one, and when the workpiece is loosened, the workpieces must be loosened one by one, so that The clamping process is complicated and lengthy; and the line drawing processing cannot meet the precision requirements required after the upgrade.

Utility model content

The utility model intends to provide a gland positioning and clamping drilling mold so as to improve the machining accuracy and simplify the process steps.

The basic solution of the utility model is to position and clamp the drilling mold by the gland, including: a base, a turntable, a pressing table and a drilling mold, and a cam; the cam is an eccentric cam, including a rotating shaft and a convex edge, and the rotating shaft and the convex edge are It is a cylinder, and the rotating shaft is fixed on both ends of the convex edge, but the convex edge is set eccentrically to the rotating shaft; the base is provided with a mounting cavity, and the cam is installed in the mounting cavity, and the cam is rotatably connected with the base, and has a part of the rotating shaft The disbursement base is the driving end of the cam; the turntable is arranged above the base and splined to the driving end of the cam; the upper end of the pressing table is provided with a central positioning boss in the shape of a truncated cone and a peripheral positioning ring, and the peripheral positioning ring The center is provided with a positioning taper hole, and the lower end of the pressing platform is connected with a driving rod through a thread; above the platform, and fixedly connected to the base, and the drilling template is provided with a drilling template positioning hole

Because the turntable is splined with the cam, the cam will also rotate when the turntable is turned; since the convex edge of the cam is eccentrically arranged with the rotating shaft, when the cam rotates, the drive rod in contact with the outer periphery of the convex edge will be squeezed by the outer periphery of the convex edge. Press and be ejected; thereby changing the distance between the pressing table and the drilling mold, the pressing of the workpiece can be realized. In order to achieve the positioning effect on the workpiece, a central positioning boss is set. The central positioning boss is set in the shape of a cone, so that the pressing table can align the axis of the workpiece to the center positioning table during the process of pressing the workpiece. However, since the drilling position of the workpiece is located on the outer periphery of the central positioning table, when the drill bit exerts pressure on the workpiece, the pressing force will be unevenly distributed on the workpiece, so that the outer peripheral positioning ring can be set from the workpiece. The outer circumference is further pressed and positioned to make the force of the workpiece more uniform and prevent the workpiece from deflecting. The drilling jig has the function of positioning the drill bit, so as to save the line drawing process.

The problems of insufficient precision and lengthy process in the background art can be solved by this basic solution.

Preferred solution 1, as a further optimization of the basic solution, the base includes a housing and a cam support ring, the installation cavity is arranged on the housing, and the cam support ring is fixed on the housing with screws, and connected to one end of the cam Cooperate with the rotating shaft; this optimization can make the assembly of the base and the cam simple and reliable.

Preferred option 2, as a further optimization of the basic solution, two handles are provided on the turntable, the handles are threadedly connected to the turntable, and the angle between the center of the handle and the center of the turntable is 30o; this optimization is more convenient to turn the turntable, and the handles are threaded The connection is easy to disassemble.

Preferred option three, as a further optimization of the basic solution, the contact surface between the drive rod and the outer circumference of the convex edge is set as an arc surface; this optimization can make the outer circumference of the convex edge contact with the drive rod to prevent the cam from contacting the drive rod. Transition wear between.

Preferred option 4, as a further optimization of the basic solution, the outer periphery of the drive rod is also sleeved with a compression spring, the drive rod is also provided with a spring limit convex edge, the base is provided with a spring limit end cover, and the spring limit The bit end cover is set on the driving rod and fixed on the base by screws; due to the sliding connection between the driving rod and the base, it is very easy to increase the friction force due to the filling of iron slag in the gap between the driving rod and the base, resulting in After the workpiece is released, the compression table cannot return to its position under the action of gravity, so setting the compression spring will help the return of the compression table.

Preferred option five, as a further optimization of the basic solution, the outer peripheral positioning ring is screwed to the outer periphery of the compression table, and a rotating handle is also provided on the outer peripheral compression ring; since each workpiece has a certain error, through Relatively fixed central positioning table and outer peripheral positioning ring to achieve positioning and compression, it is possible that the edge pressing force is smaller than the central pressing force, resulting in slight deflection of the workpiece, so by turning the handle to screw the outer peripheral positioning ring to the workpiece Further pressing and positioning on the outer periphery can further improve the positioning accuracy.

Description of drawings

Fig. 1 is a schematic diagram of the mechanism of the embodiment of the gland positioning and clamping drilling mold of the present invention.

detailed description

The utility model is described in further detail below by means of specific embodiments:

The reference signs in the drawings of the description include: base 1, turntable 2, cam 3, pressing table 4, drilling mold 5, workpiece 6, housing 11, cam support ring 12, spring limit end cap 13, handle 21, The convex edge 31 , the rotating shaft 32 , the driving rod 41 , the compression spring 42 , the peripheral positioning ring 43 , and the spring limiting convex edge 411 .

The embodiment is basically shown in Figure 1: the gland positioning clamping jig includes a base 1, a turntable 2, a cam 3, a pressing table 4 and a jig 5; the base 1 includes a housing 11, a cam support ring 12; the cam 3 It is an eccentric cam 3, including a rotating shaft 32 and a convex edge 31, and the rotating shaft 32 and the convex edge 31 are cylinders, and the rotating shaft 32 is fixed on the two ends of the convex edge 31, but the convex edge 31 is set eccentrically on the rotating shaft 32, that is, the convex edge 31 and the The rotating shaft 32 is not coaxial; the housing 11 is provided with an installation cavity, the cam 3 is installed in the installation cavity, and the cam 3 is connected to the base 1 in rotation, wherein the rotating shaft 32 at one end of the cam 3 is supported by the housing 11, and the cam support ring 12 Detained on the housing 11, it cooperates with the rotating shaft 32 at the other end of the cam 3, and part of the rotating shaft 32 exits the base 1, which is the driving end of the cam 3, and the supporting ring of the cam 3 is fixed on the housing 11 with screws; the turntable 2 is arranged on Above the base 1, it is spline connected with the driving end of the cam 3. Two handles 21 are also arranged on the turntable 2. The handles 21 are screwed to the turntable 2, and the angle between the center of the handle 21 and the center of the turntable 2 is 30°; The upper end is provided with a truncated conical central positioning boss, the lower end of the pressing table 4 is connected with a drive rod 41 by a screw thread, and the outer circumference of the pressing table 4 is also threaded with a peripheral positioning ring 43 with a rotating handle 21, and the outer peripheral positioning The upper end of the ring 43 is provided with a positioning taper hole; the housing 11 is provided with a corresponding sliding rod mounting hole, the driving rod 41 is inserted in the sliding rod mounting hole, and is slidably connected with the base 1, and the driving rod 41 is mounted on the base 1 along the The axial direction of the drive rod 41 slides, and one end of the drive rod 41 is set so that the arc surface contacts with the outer periphery of the convex edge 31 of the cam 3, and the outer periphery of the drive rod 41 is also sleeved with a compression spring 42, so that the compression spring 42 is easy to install , The driving rod 41 is also provided with a spring limit convex edge 41131 and a spring limit end cover 13, the spring limit end cover 13 is sleeved on the drive rod 41 and fixed on the housing 11 by screws. The jig 5 is arranged above the pressing table 4, and is fixedly connected to the base 1, and the jig 5 is provided with a jig 5 positioning hole.

Specific working process and effect: Hold the handle 21 connected to the turntable 2 and turn the turntable 2. Since the turntable 2 is splined with the shaft 32 of the cam 3, the cam 3 will also rotate when the turntable 2 is turned. The convex edge 31 is eccentrically arranged with the rotating shaft 32, so when the cam 3 rotates, the driving rod 41 contacting the outer periphery of the convex edge 31 will protrude out of the housing 11 due to the extrusion of the outer periphery of the convex edge 31, and because the driving rod 41 The outer circumference is provided with a compression spring 42, so when the cam 3 rotates back and forth, the drive rod 41 will extend and retract back and forth relative to the housing 11, thereby changing the distance between the compression table 4 and the jig 5 to achieve Compression of workpiece 6. In order to achieve the positioning effect on the workpiece 6, a central positioning boss is provided. The central positioning boss is set in the shape of a cone, so that the pressing table 4 can align the axis of the workpiece 6 to the The axis of the central positioning table can be used to achieve positioning; however, since there is a certain error in each workpiece 6, positioning and pressing can only be achieved through the central positioning table, which can neither ensure the positioning accuracy nor make the pressing force on the workpiece 6 Evenly distributed, so that the outer peripheral positioning ring 43 can be further pressed and positioned from the outer periphery of the workpiece 6, thereby improving the positioning accuracy. In order to make the outer periphery of the convex edge 31 contact with the driving rod 41 and prevent the transition wear between the cam 3 and the driving rod 41, the contact surface of the driving rod 41 and the outer periphery of the convex edge 31 is set as an arc surface.

Claims (6)

1. A gland positioning clamping jig, comprising: a base, a rotating disk, a pressing table and a jig; It is characterized in that it also includes a cam; the cam is an eccentric cam, including a rotating shaft and a convex edge, and the rotating shaft and the convex The edges are all cylinders, and the rotating shaft is fixed on both ends of the convex edge, but the convex edge is set eccentrically to the rotating shaft; the base is provided with a mounting cavity, and the cam is installed in the mounting cavity, and the cam is connected to the base in rotation, and has Part of the rotating shaft comes out of the base, which is the driving end of the cam; the turntable is arranged above the base and is splined with the driving end of the cam; the upper end of the pressing table is provided with a frustum-shaped central positioning boss and an outer peripheral positioning ring, and the outer peripheral The center of the positioning ring is provided with a positioning taper hole, and the lower end of the pressing table is threadedly connected with a driving rod; the driving rod is slidably connected with the base, and one end of the driving rod is in contact with the outer periphery of the convex edge of the cam; The top of the pressing table is fixedly connected to the base, and the drilling template is provided with a drilling template positioning hole. 2. According to claim 1, the drilling mold for positioning and clamping the gland is characterized in that, the base includes a housing and a cam supporting ring, the installation cavity is arranged on the housing, and the cam supporting ring is fixed on the housing with screws. on the housing, and cooperate with the rotating shaft at one end of the cam. 3. The drilling mold for positioning and clamping the gland according to claim 1, wherein two handles are provided on the turntable, the handles are screwed to the turntable, and the angle between the center of the handle and the center of the turntable is 30o. 4 . The clamping mold for positioning and clamping the gland according to claim 1 , wherein the surface of the drive rod in contact with the outer periphery of the convex edge is set as an arc surface. 5. According to claim 1, the drilling mold for positioning and clamping by the gland is characterized in that, the outer periphery of the driving rod is also provided with a compression spring, the driving rod is also provided with a spring limit convex edge, and the base is provided with a spring The limit end cover, and the spring limit end cover is sleeved on the driving rod and fixed on the base by screws. 6 . The drilling mold for positioning and clamping the gland according to claim 1 , wherein the outer peripheral positioning ring is screwed to the outer periphery of the pressing table, and a rotating handle is provided on the outer peripheral pressing ring. 7 .