CN205270891U - Top guiding mechanism of lathe outer support - Google Patents

Abstract

The utility model discloses a tip adjustment mechanism for an outer bracket of a machine tool, which belongs to the technical field of machine tool components, and comprises a tip and a tip sleeve set on the tip, the tip sleeve is fixed with an outer bracket through an adjustment assembly, and the outer bracket is used for There is an adjustment gap between the through hole where the top sleeve is installed and the top sleeve, and there are three sets of adjustment components, which are evenly distributed along the circumferential direction of the through hole. Through the adjustment mechanism, the utility model makes the concentric adjustment operation process of the top on the outer bracket and the machine tool workbench simple and direct, saves manpower, improves work efficiency, not only can be used on gear hobbing machines, but also can be popularized and applied to gear grinding on board.

Description

A top adjustment mechanism of machine tool outer support

technical field

The utility model belongs to the technical field of machine tool components, and in particular relates to an adjustment mechanism for the concentricity between the top of a machine tool outer support and a workbench.

Background technique

During the processing of gear hobbing machine tools, the top mechanism is often used to center the workpiece, because it will directly affect the machining accuracy of the workpiece. The concentricity between the top of the small column on the existing outer support and the machine table can only be adjusted by tapping the small column to move, that is, when the top part is moved up and down many times, there may be a problem that the coaxiality between the top and the center of the worktable is out of tolerance , in the original traditional structure, after the tip is adjusted, if the coaxiality is out of tolerance, it can only be adjusted by moving the entire small column, so the fine-tuning effect of the tip is not good, and its fine-tuning accuracy cannot be accurately controlled, and it is time-consuming and expensive. It is laborious and inconvenient, which seriously affects the machining accuracy of the workpiece, so it is urgent to solve the above technical problems.

Utility model content

In view of this, the purpose of this utility model is to provide an adjustment mechanism that can precisely control and adjust the concentricity between the center and the worktable.

In order to achieve the above object, the utility model is achieved through the following technical solutions:

The utility model provides a top adjustment mechanism for the outer bracket of a machine tool, which includes a top and a top sleeve set on the top, the top sleeve is fixed with the outer bracket through an adjustment assembly, and the through hole for installing the top sleeve on the outer bracket There is an adjustment gap between the top sleeve and the adjustment assembly, and there are three sets of adjustment components, which are evenly distributed along the circumferential direction of the through hole.

Preferably, the adjustment assembly includes an adjustment screw, an adjustment sleeve, a connection plate, a lock nut and a limit nail; The position part and both sides of the limiting part are respectively provided with external threads; the adjustment sleeve is matched with the external thread of the adjustment screw through the internal thread and is located at the opposite end of the flat side end; the adjustment sleeve can slide set on the outer bracket, the connecting plate is fixed with the outer bracket, and there is a groove for accommodating the limit part of the adjusting screw on it, and the adjusting screw is fixedly connected to the connecting plate through the lock nut, and the locking The nut is matched with the external thread of the adjusting screw through the internal thread, and is close to the flat side end; the adjusting sleeve is provided with a waist-shaped groove matching the limiting nail, and the limiting nail is fixed on the outer bracket.

Preferably, a washer is further provided between the outer bracket and the connecting plate.

Preferably, the external thread on the adjusting screw is a fine thread.

Preferably, the value range of the adjustment gap is 1-3mm.

The beneficial technical effects of the utility model are: the utility model uses the adjustment mechanism to make the concentricity of the top on the outer bracket and the machine tool worktable be fine-tuned precisely, and the fine-tuning operation process becomes simple and direct, saving manpower, The work efficiency is improved, not only can be used on the gear hobbing machine, but also can be popularized and applied to the gear grinding machine.

Other advantages, objectives and features of the present utility model will be set forth in the following description to some extent, and to some extent, based on the investigation and research below, it will be obvious to those skilled in the art, or can be Get teaching from the practice of the utility model. The objectives and other advantages of the utility model can be realized and obtained through the following description.

Description of drawings

In order to make the purpose, technical solutions and advantages of the utility model clearer, the utility model will be described in detail below in conjunction with the accompanying drawings, wherein:

Fig. 1 is the structural representation of adjustment mechanism of the present utility model;

Fig. 2 is the top view of Fig. 1;

Fig. 3 is an enlarged view of part I of Fig. 1;

Fig. 4 is an enlarged view of part P of Fig. 3 (the structural schematic diagram of the adjustment assembly);

Figure 5 is an exploded view of the adjustment assembly in the adjustment mechanism of the present embodiment;

Reference signs: 1-top; 2-top sleeve; 3-adjustment assembly, 31-adjustment screw, 311-flat square, 312-limiting part, 313-external thread, 32-adjustment sleeve, 321-waist groove, 33-connection plate, 331-groove, 34-lock nut, 35-limit nail, 36-washer; 4-outer support; 5-workbench; 6-adjustment gap.

detailed description

The preferred embodiments of the present utility model will be described in detail below in conjunction with the accompanying drawings; it should be understood that the preferred embodiments are only for illustrating the present utility model, rather than limiting the protection scope of the present utility model.

As shown in Figures 1-5, the utility model provides a top adjustment mechanism for the outer bracket of a machine tool, including a top 1, and a top sleeve 2 set on the top 1, and the top sleeve 2 is connected with the outer bracket through the adjustment assembly 3. 4 is fixed, there is an adjustment gap 6 between the through hole (unmarked) for installing the top sleeve 2 on the outer bracket 4 and the top sleeve 2, the adjustment assembly 3 is three sets, and along the through hole Evenly distributed in the circumferential direction, the three sets of adjustment assemblies 3 are arranged at an angle of 120° to each other. The adjustment assembly 3 includes an adjustment screw 31, an adjustment sleeve 32, a connecting plate 33, a lock nut 34 and a stop screw 35; The square 311 is provided with a limiting portion 312 at a certain distance and external threads 313 are respectively provided on both sides of the limiting portion 312. The dimensions of the external threads 313 on both sides are consistent, which is beneficial to the processing of the adjusting screw 31. The flat square 311 is used An external wrench can make the adjusting screw 3 rotate in its radial direction; the adjusting sleeve 32 is matched with the external thread 313 of the adjusting screw 31 through an internal thread (unmarked), and is located at the opposite end of one end of the flat square 311 The adjusting sleeve 32 is slidably arranged on the outer bracket 4, and the connecting plate 33 is fixed with the outer bracket 4, and a groove 321 for accommodating the limit portion 312 of the adjusting screw 31 is provided on it, and is passed through the locking nut 34 to fix the adjusting screw 31 on the connecting plate 33. Simply speaking, when the adjusting sleeve 32 is screwed to the appropriate position of the adjusting screw 31, the limit part 312 on the adjusting screw 31 and the lock nut 34 are connected together. Cooperate so that the adjusting screw 31 is fixedly connected with the connecting plate 33, and the lock nut 34 is matched with the external thread 313 of the adjusting screw 31 through an internal thread (unmarked), and is close to one end of the flat square 311; the adjusting sleeve 32 is provided with There is a waist-shaped groove 321 cooperating with the stop nail 35, and the stop nail 35 is fixed on the outer bracket 4, so that the stop nail 35 can limit the radial direction movement of the adjustment sleeve 32, that is, the adjustment screw 31 is rotating During the process, the adjustment sleeve 32 set on it will not be driven to follow it to make radial rotation, and can only move left and right in the axial direction under the cooperation of the thread, so as to achieve the purpose of adjusting the adjustment sleeve 32, that is, through The three adjusting sleeves 32 can move the center sleeve 2 in any angle range in the inner through hole of the outer bracket 4, so that the concentricity between the center point and the workbench can be adjusted precisely.

In this embodiment, a washer 36 is provided between the outer support 4 and the connecting plate 33, which can make the connecting plate and the outer support more stable.

In this embodiment, the external thread 313 on the adjusting screw 31 is a fine thread, because the adjustment of the top 1 in the through hole of the outer bracket 4 is fine-tuning, and the fine-tuning series is the thread level, so it can be fine-threaded by using the fine thread. To achieve the purpose of precise adjustment.

In this embodiment, the value range of the adjustment gap 6 is 1-3 mm, and the preferred gap value is 2 mm, which can meet the conditions of use.

The working principle of the adjustment mechanism of the utility model is: install the entire top part in the top sleeve, and then leave a gap of 2mm between the top sleeve and the through hole of the outer bracket. , when the adjusting screw is turned in different directions, the adjusting sleeve on it will move back and forth in the axial direction. It can be known that when the three uniform directions in the circumference are adjusted simultaneously, the coaxiality between the top and the center of the worktable can be adjusted to a qualified range. This method is simple and practical to adjust, and it is not necessary to beat Move the small column to achieve.

The utility model uses the adjustment mechanism to make the concentricity between the top of the outer bracket and the machine tool worktable be fine-tuned precisely, and the fine-tuning operation process becomes simple and direct, which saves manpower and improves work efficiency. It can be used not only in hobbing machines On, but also can be extended to the gear grinding machine.

Finally, it is noted that the above embodiments are only used to illustrate the technical solutions of the present utility model without limitation. Although the utility model has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the utility model can be Modifications or equivalent replacements of the technical solutions without departing from the spirit and scope of the technical solutions shall be covered by the claims of the present utility model.

Claims (5)

1. A machine tool outer bracket top adjustment mechanism, comprising a top, characterized in that: it also includes a top sleeve set on the top, the top sleeve is fixed with the outer bracket by an adjustment assembly, and the outer bracket is used to install the top sleeve There is an adjustment gap between the through hole and the top sleeve, and there are three sets of adjustment components, which are evenly distributed along the circumferential direction of the through hole. 2. The top adjustment mechanism of the machine tool outer support according to claim 1, characterized in that: the adjustment assembly includes an adjustment screw, an adjustment sleeve, a connection plate, a lock nut and a limit nail; the adjustment screw includes a The flat square at one end is provided with a limiting part at a certain distance from the flat side, and external threads are respectively provided on both sides of the limiting part; the adjusting sleeve is matched with the external thread of the adjusting screw through the internal thread, And it is located at the opposite end of the flat side end; the adjusting sleeve is slidably arranged on the outer bracket, the connecting plate is fixed with the outer bracket, and there is a groove for accommodating the limit part of the adjusting screw on it, and through The lock nut cooperates to fix the adjusting screw on the connecting plate, and the lock nut is matched with the external thread of the adjusting screw through the internal thread, and is close to the flat end; the adjusting sleeve is provided with the limit nail The matching waist-shaped groove, the limit nail is fixed on the outer bracket. 3 . The top adjustment mechanism of the outer support of the machine tool according to claim 2 , wherein a washer is provided between the outer support and the connection plate. 4 . 4. The top adjustment mechanism of the machine tool outer support according to claim 2, characterized in that: the external thread on the adjusting screw is a fine thread. 5 . The top adjustment mechanism of the machine tool outer support according to claim 1 , wherein the value range of the adjustment gap is 1-3 mm. 5 .