Special electric spindle for internal and external thread grinding machine

Abstract

The utility model discloses a special electric main shaft for an internal and external thread grinding machine, which comprises a shaft handle, a shaft body, a shaft head, a connecting column, a column body, a pull column, a connecting rod and a positioning block, the structure of the main shaft is improved, the positioning block is inserted into a positioning hole under the action of elastic force of an elastic piece so as to fix the column body and the shaft head synchronously relative to the shaft body, and the pull column can be pulled; under the transmission of the connecting rod, the positioning block retracts backwards and then is separated from the positioning hole, then the column body can be moved to synchronously adjust the position of the shaft head, and the structure is high in operation stability.

Description

Technical Field

[0001] The utility model relates to the technical field of grinding machine devices, in particular to a special electric spindle for internal and external thread grinding machines. Background Art

[0002] Internal thread grinders or external thread grinders are mainly used for precision machining of thread gauges, thread tools, lead screws and other parts. The spindle head of a conventional grinder is fixed and cannot be adjusted. In response to this, some companies have improved the structure of the spindle so that the spindle head is slidably connected to the axial hole of the shaft body, and the spindle head is fixed to the stud at the rear. The stud is threadedly engaged with the axial hole, and the stud is turned to adjust the position of the spindle head. The threaded engagement structure is not stable enough, and problems such as screw deformation are prone to occur during long-term use, resulting in the inability to subsequently turn it and difficulty in adjusting the position of the spindle head, which needs to be improved. Utility Model Content

[0003] In order to solve at least one of the above technical defects, the utility model provides the following technical solutions:

[0004] The present application discloses a special electric spindle for internal and external thread grinding machines, including a shaft handle, a shaft body, a shaft head, a connecting column and a column, a shaft handle is arranged at the tail end of the shaft body, a through hole is arranged axially in the shaft body and the column and the connecting column are in the through hole, the shaft head is connected to the column through the connecting column, and also includes a pull column, a connecting rod and a positioning block, the column is slidably connected to the through hole, the column is formed with an installation groove, a seat body is relatively arranged in the installation groove and a guide hole is arranged on the seat body, the positioning block is slidably connected to the guide hole and a protrusion is arranged on the positioning block, a mounting hole is formed axially at the column between the two seat bodies and the pull column is slidably connected at the mounting hole, two ends of the connecting rod are pivotally connected to the pull column and the protrusion respectively, the two positioning blocks are connected by an elastic member, positioning holes are arranged at intervals on the hole wall of the through hole, the positioning block is inserted into the positioning hole by the elastic member, and the two positioning blocks are moved toward each other by moving the pull column upward under the transmission of the connecting rod, so that the positioning block is separated from the positioning hole.

[0005] In this scheme, the main shaft structure is improved. Under the action of the elastic force of the elastic part, the positioning block is inserted into the positioning hole to fix the column relative to the shaft body, and the shaft head is fixed synchronously. The pulling column can be pulled, and the positioning block is retracted under the transmission of the connecting rod to disengage from the positioning hole. After that, the column can be moved synchronously to adjust the position of the shaft head. This structure has high operational stability.

[0006] Furthermore, a groove is provided at the end of the column to facilitate the use of fingers or other tools to exert force and then pull or push the column.

[0007] Furthermore, when the positioning block is inserted into the positioning hole, the connecting rod abuts against the hole wall of the mounting hole. In this state, the pull column is moved upward, and the pull rod is conveniently moved backward to the positioning block under the abutment of the hole wall.

[0008] Furthermore, a waist hole is formed at the protrusion along the axial direction of the column, and the end of the connecting rod is pivotally connected to the waist hole through a pivot, and the shaft body can move up and down at the waist hole to meet the displacement requirements.

[0009] Furthermore, slots are provided at opposite ends of the two positioning blocks, and the ends of the elastic members are located in the slots, thereby improving stability.

[0010] Furthermore, the pulling column is T-shaped and its longitudinal end portion is slidably connected to the mounting hole, and the T-shaped structure is convenient for pulling with force.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] 1. The utility model improves the structure of the main shaft, facilitates the adjustment of the position of the shaft head, and has high structural stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0014] Figure 1 It is a schematic diagram of the structure of the main shaft in Example 1;

[0015] Figure 2 yes Figure 1 A schematic diagram of the enlarged structure of the middle part A;

[0016] Wherein, the accompanying drawings are marked as follows:

[0017] 1. Shaft handle; 2. Shaft body; 3. Shaft head; 4. Connecting column; 5. Column body; 6. Groove; 7. Pull column; 8. Connecting rod; 9. Positioning block; 10. Mounting groove; 11. Bump; 12. Waist hole; 13. Positioning hole; 14. Slot hole; 15. Elastic part; 16. Seat body. DETAILED DESCRIPTION

[0018] The utility model is further described below in conjunction with the accompanying drawings and specific embodiments.

[0019] Example 1

[0020] like Figure 1 , Figure 2As shown, the electric spindle specially used for internal and external thread grinders in this example includes a shaft handle 1, a shaft body 2, a shaft head 3, a connecting column 4, a column 5, a pulling column 7, a connecting rod 8, and a positioning block 9. The shaft handle 1 is integrally formed at the tail end of the shaft body 2, a through hole is formed in the shaft body 2 along the axial center line, the column 5 and the connecting column 4 are located in the through hole and the column 5 is slidably matched with the through hole, one end of the connecting column 4 is fixed to the shaft head 3 and the other end is fixed to the column 5. If they are fixed in an inlaid manner, the column can be slid to adjust the axial position of the shaft head to facilitate use requirements.

[0021] For fixing the column in the through hole, a through hole, i.e., a mounting groove 10, is formed in the middle of the column 5, a rectangular seat 16 is formed relatively in the mounting groove 10, a guide hole is formed radially on the seat 16, the positioning block 9 is slidably connected with the guide hole, and the two positioning blocks 9 are connected by an elastic member 15, such as a spring. The tail end of the positioning block 9 can be optionally formed with a slot, and the end of the elastic member 15 is in the slot, which helps to improve stability.

[0022] Positioning holes 13 are formed at intervals along the axial direction on the hole wall of the through hole of the shaft body 2, and the positioning holes 13 are for the positioning blocks 9 to be inserted. After the column moves into place, the end of the positioning block is inserted into the positioning hole under the push of the elastic member to fix the column in the through hole.

[0023] In this example, a protrusion 11 is formed on the top surface of the rear end of the positioning block 9, and a waist hole 12 is formed on the protrusion 11 along the axial direction of the column 5. A mounting hole is formed along the axial center line at the groove wall of the column 5 between the two positioning blocks 9, and the mounting hole extends to the end surface of the column. The longitudinal end of the T-type pull column 7 is in the mounting hole and slides in the mounting hole.

[0024] The longitudinal end and the tail end of the pull column 7 are relatively formed with a groove, the head end of the connecting rod 8 is pivotally connected in the groove and the tail end of the connecting rod is pivotally connected to the waist hole 12 through a pivot, and the tail end of the connecting rod can move up and down through the waist hole.

[0025] The pulling column can be moved upward, and the two positioning blocks can be moved toward each other under the transmission of the connecting rod, so that the positioning blocks are separated from the positioning holes, and then the column can be moved to adjust the position of the shaft head.

[0026] Preferably, when the positioning block is inserted into the positioning hole, the connecting rod 8 abuts against the hole wall of the mounting hole. In this state, the pull column is moved upward, and the pull rod is conveniently moved back to the positioning block under the abutment of the hole wall.

[0027] In addition, it is preferred that a groove 6, such as an L-shaped groove, is formed at the end of the column 5 to facilitate the use of fingers or other tools to exert force and then pull or push the column.

[0028] The above are only preferred implementations of the utility model. The protection scope of the utility model is not limited to the above embodiments. All technical solutions under the idea of ​​the utility model belong to the protection scope of the utility model. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the utility model should also be regarded as the protection scope of the utility model.

Claims

1. A special electric spindle for internal and external thread grinding machine, comprising a shaft handle, a shaft body, a shaft head, a connecting column, and a column body, wherein the shaft handle is arranged at the tail end of the shaft body, a through hole is arranged in the shaft body along the axial direction, and the column body and the connecting column are in the through hole, and the shaft head is connected to the column through the connecting column, characterized in that: It also includes a pulling column, a connecting rod, and a positioning block, the column being slidably connected to the through hole, a mounting groove being formed on the column, a seat body being relatively arranged in the mounting groove and a guide hole being arranged on the seat body, the positioning block being slidably connected to the guide hole and a protrusion being arranged on the positioning block, a mounting hole being axially formed at the column between the two seat bodies and the pulling column being slidably connected to the mounting hole, the two ends of the connecting rod being pivotally connected to the pulling column and the protrusion respectively, the two positioning blocks being connected by an elastic member, positioning holes being arranged at intervals on the hole wall of the through hole, the positioning block being inserted into the positioning hole by the elastic member, and the two positioning blocks being moved toward each other by the upward movement of the pulling column under the transmission of the connecting rod, so that the positioning block is disengaged from the positioning hole.

2. The electric spindle for internal and external thread grinding machines according to claim 1, characterized in that: A groove is arranged at the end of the column.

3. The electric spindle for internal and external thread grinding machines according to claim 1, characterized in that: When the positioning block is inserted into the positioning hole, the connecting rod abuts against the hole wall of the mounting hole.

4. The electric spindle for internal and external thread grinding machines according to claim 1, characterized in that: A waist hole is formed at the protrusion along the axial direction of the column, and the end of the connecting rod is pivotally connected to the waist hole through a pivot.

5. The electric spindle for internal and external thread grinding machines according to claim 1, characterized in that: Slot holes are arranged at opposite ends of the two positioning blocks, and the ends of the elastic members are located in the slot holes.

6. The electric spindle for internal and external thread grinding machines according to claim 1, characterized in that: The pull column is T-shaped and its longitudinal end portion is slidably connected to the mounting hole.

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