CN218657189U

CN218657189U - Nut internal thread channel grinding frock

Info

Publication number: CN218657189U
Application number: CN202222872422.0U
Authority: CN
Inventors: 周吉贞; 刘丹; 王彩年; 吕军; 张广明; 赵宏安; 孙造; 贾伟东; 陈凯
Original assignee: General Technology Group Dalian Machine Tool Co ltd
Current assignee: General Technology Group Dalian Machine Tool Co ltd
Priority date: 2022-10-31
Filing date: 2022-10-31
Publication date: 2023-03-21
Anticipated expiration: 2032-10-31

Abstract

The utility model discloses a nut internal thread channel grinding frock, its characterized in that: the frock include outer position sleeve (1), emery wheel feeler block (2) have been cup jointed in outer position sleeve (1), emery wheel feeler block (2) comprises interconnect's location barrel (3) and arc feeler piece (4) two parts, and the external diameter of location barrel (3) matches each other with the internal diameter of outer position sleeve (1), threaded connection has positioning bolt (5) on outer position sleeve (1), and then be provided with on location barrel (3) with positioning bolt (5) assorted locating hole (6), observation window (7) have still been seted up on location barrel (3), be provided with many constant head tanks (8) on the inner wall of arc feeler piece (4).

Description

Nut internal thread channel grinding frock

Technical Field

The utility model relates to a frock, especially a nut internal thread channel grinding frock.

Background

In mechanical machining, according to the change of machining equipment and the change of parts to be machined, a specific process is often established, and a special part clamping mode and a positioning method in the machining process are designed, namely, the clamping mode and the positioning method are important contents in the production and machining links. A reliable clamping mode and an accurate positioning mode are one of important guarantee means of the precision level of batch products in machining.

The ball nut is a common mechanical part, a fixed phase relation exists between a thread channel and a mounting hole of a reverser, the ball nut is a difficult point in production and processing, and the phase precision of the machining nut is difficult to guarantee due to the structural particularity of the ball nut.

Traditional finished product abrasive machining of ball nut spiral groove adopts the internal thread grinding lathe, and the four-jaw chuck presss from both sides tight square worker and is given first place to mostly, and the manual alignment part of cooperation operating personnel finds the corresponding relation of emery wheel and screw groove manually, just can start the abrasive machining of spiral raceway. The dependence degree of the processing mode on the technical level of operators and the working responsibility is too high, and the precision consistency of products can not be ensured during batch production, so that the design requirements of the products are difficult to meet. In order to solve the problem, some manufacturers provide that a measuring head capable of automatically measuring and a related sensor are additionally arranged on a machine tool, so that equipment can automatically measure the position of a spiral channel of a processed nut, the automatic alignment function of the equipment is further realized, and dependence on personnel is reduced. However, the equipment after the improvement is expensive, and brings huge cost pressure to production enterprises.

There is therefore a need for a method or apparatus that addresses the above-mentioned problems.

SUMMERY OF THE UTILITY MODEL

The utility model relates to a solve above-mentioned technical problem, provide a simple structure, design benefit, rationally distributed, can guarantee positioning accuracy's nut internal thread channel grinding frock under the prerequisite of low cost.

The technical solution of the utility model is that: the utility model provides a nut internal thread channel grinding frock which characterized in that: the tool comprises an outer positioning sleeve 1, a grinding wheel feeler block 2 is sleeved in the outer positioning sleeve 1, the grinding wheel feeler block 2 consists of a positioning cylinder 3 and an arc-shaped feeler block 4 which are connected with each other, the outer diameter of the positioning cylinder 3 is matched with the inner diameter of the outer positioning sleeve 1, a positioning bolt 5 is connected on the outer positioning sleeve 1 in a threaded manner, a positioning hole 6 matched with the positioning bolt 5 is arranged on the positioning cylinder 3, an observation window 7 is also arranged on the positioning cylinder 3,

be provided with many constant head tanks 8 on the inner wall of arc to blade 4, constant head tank 8 is the same with the internal screw thread orbit of nut, has still seted up precision calibration hole 9 simultaneously on arc to blade 4.

The observation windows 7 are a plurality of observation windows 7, the observation windows 7 are uniformly distributed in the circumferential direction, and different observation windows are staggered in the axial direction of the outer positioning sleeve 1.

Compared with the prior art, the utility model, have following advantage:

the nut internal thread groove grinding tool with the structure is simple in structure, ingenious in design and reasonable in layout, aims at solving the problems existing in the traditional method of grinding the spiral groove of the ball nut in a manual alignment mode, and designs a special tool. The tool has the advantages of simple manufacturing process and low manufacturing cost, so the tool is particularly suitable for popularization and application in the field and has a very wide market prospect.

Drawings

Fig. 1 is a schematic view of an assembled state of an embodiment of the present invention.

Fig. 2 is a schematic structural view of an outer positioning sleeve in the embodiment of the present invention.

Fig. 3 is a schematic structural diagram of the grinding wheel feeler block in the embodiment of the present invention.

Fig. 4 is a schematic perspective view of an embodiment of the present invention.

Detailed Description

The following description will explain embodiments of the present invention with reference to the drawings. As shown in fig. 1 to 4: the utility model provides a nut internal thread channel grinding frock, it includes an outer position sleeve 1, emery wheel feeler block 2 has been cup jointed in outer position sleeve 1, emery wheel feeler block 2 comprises interconnect's location barrel 3 and arc to blade 4 two parts, and the external diameter of location barrel 3 matches each other with the internal diameter of outer position sleeve 1, and threaded connection has positioning bolt 5 on outer position sleeve 1, and then be provided with on the location barrel 3 with positioning bolt 5 assorted locating hole 6, still seted up observation window 7 on the location barrel 3, be provided with many constant head tanks 8 on the inner wall of arc to blade 4, constant head tank 8 is the same with the internal screw thread orbit of nut, has still seted up precision calibration hole 9 on arc to blade 4 simultaneously.

The utility model discloses nut internal thread channel grinding frock's working process as follows: firstly, an outer positioning sleeve 1 is arranged on a four-jaw chuck of an internal thread grinding machine, the accuracy of the excircle and the end face of the outer positioning sleeve 1 is aligned to the requirement, the outer positioning sleeve 1 is clamped by the four-jaw chuck, then a grinding wheel feeler block 2 is inserted into an inner hole of the outer positioning sleeve 1, a positioning bolt 5 is screwed after the alignment, the grinding wheel feeler block 2 and the outer positioning sleeve 1 are connected and positioned by the positioning bolt 5,

the structure of the grinding wheel feeler block 2 completely simulates the structure of a workpiece to be machined, the arc feeler block 4 on the grinding wheel feeler block is originally a part of a thread raceway or a groove, the thread raceway or the groove which is the same as that of a target workpiece is machined, and then most of arcs are cut off in a machining mode, so that the arc feeler block 4 is obtained, and at the moment, a positioning groove 8 left on the arc feeler block 4 is the same as the track of an internal thread of the target nut; meanwhile, the machining precision of the grinding wheel feeler block 2 is required to be higher than the required progress of a target workpiece, so that after the grinding wheel on the machine tool is aligned with the grinding wheel feeler block 2, the workpieces machined in batches in the follow-up process are ensured to have high precision and good consistency;

after the tool is installed, the relative positions of a grinding wheel shaft and a grinding wheel on a grinding machine tool are adjusted, the grinding wheel is guaranteed to be simultaneously contacted with two sides of a positioning groove 8 on an arc-shaped feeler block 4, precision calibration operation before machining is achieved, then the grinding wheel is withdrawn to a safe position, and after a positioning bolt 5 is screwed out under the linkage state of a spindle chuck, the grinding wheel feeler block 2 is detached from an outer positioning sleeve 1;

then, the nuts processed in batches are arranged in the outer positioning sleeve 1, the positioning bolts 5 are screwed to position the nuts and the outer positioning sleeve 1, the processing process parameters of a grinding machine tool are adjusted according to the processing allowance left on the internal spiral channels of the nuts, then, the grinding processing can be started, and the grinding processing condition can be observed at any time through a plurality of observation ports 7 formed in the outer positioning sleeve 1 in the processing process until the grinding processing reaches the size of a finished product;

and (3) detaching the machined nut from the outer positioning sleeve 1, reinstalling a nut to be machined, and machining the nut again by the steps to finally realize batch machining of the nut.

Claims

1. The utility model provides a nut internal thread channel grinding frock which characterized in that: the tool comprises an outer positioning sleeve (1), a grinding wheel feeler block (2) is sleeved in the outer positioning sleeve (1), the grinding wheel feeler block (2) consists of a positioning cylinder body (3) and an arc-shaped feeler piece (4) which are connected with each other, the outer diameter of the positioning cylinder body (3) is matched with the inner diameter of the outer positioning sleeve (1), a positioning bolt (5) is connected with the outer positioning sleeve (1) in a threaded manner, a positioning hole (6) matched with the positioning bolt (5) is arranged on the positioning cylinder body (3), an observation window (7) is also arranged on the positioning cylinder body (3),

be provided with many constant head tanks (8) on the inner wall of arc to blade (4), constant head tank (8) are the same with the internal screw thread orbit of nut, have still seted up precision calibration hole (9) simultaneously on arc to blade (4).

2. The nut internal thread channel grinding tool according to claim 1, characterized in that: the observation windows (7) are a plurality of observation windows (7), the observation windows (7) are uniformly distributed in the circumferential direction, and different observation windows are staggered in the axial direction of the outer positioning sleeve (1).